WO2005076250A1

WO2005076250A1 - The apparatus and method for displaying an image using a large balloon

Info

Publication number: WO2005076250A1
Application number: PCT/KR2005/000242
Authority: WO
Inventors: Seok-Joong Oh; Sang-Hoon Kwon
Original assignee: O & K Co., Ltd.
Priority date: 2004-02-03
Filing date: 2005-01-28
Publication date: 2005-08-18
Also published as: KR20050078838A

Abstract

In case of an advertisement using a conventional advertising balloon, there are limitations on the contents or formats that can be presented to effectively communicate phrases or simple figures for propaganda or advertisement. An image displaying apparatus of the present invention comprises a large balloon that is formed in a predetermined shape out of a roll stock of polyurethane film and installed at a predetermined height from the ground by injecting gas into the large balloon, an image projecting means fixedly installed at a side of the large balloon to project an image transmitted from an image transmitter; and a screen installed at the other side of the large balloon to display the image projected from the image projecting means thereon. The roll stock of polyurethane film is prepared by thermal-bonding a polyurethane film, which contains a glossy or fluorescent material to show a variety of colors and becomes an outer surface of the large balloon, to a polyurethane film, which present matte black for constructing the interior of the large balloon as a darkroom to implement optimal image quality and becomes an inner surface of the large balloon. Thus, the present invention can improve noticeability with a variety of formats and contents and thus maximize desired effects by implementing an image for an advertisement, a publicity exhibition, a sports event or the like while advantage of a conventional balloon.

Description

THE APPARATUS AND METHOD FOR DISPLAYING IMAGE USING A LARGE BALLOON

Technical field The present invention relates to an apparatus and method for displaying an image using a large balloon, and more particularly, to an apparatus and method for displaying an image using a large balloon where a still or moving image concerning an advertisement, a movie, a public performance, a sports event, or the like is displayed by projecting it onto a screen through a projector, wherein the still or moving image is transmitted from an image transmitter installed at the ground or in the peripheral upper air, and the screen and the projector are installed in the large balloon of which the interior is constructed as a darkroom and which is fixedly or movably installed at a predetermined height from the ground and is shaped in a general feature of a circular or elliptic globe or a specific feature of a character, an article or the like concerning an event.

Background Art Hitherto, as shown in Fig. 1, an advertisement using an advertising balloon is generally effected with a configuration in which a placard 20 with descriptions or figures for propaganda or advertisement described thereon is suspended and supported and fixed through a connecting line 30 to an advertising balloon 10 which is formed in a globe shape by injecting gas such as helium lighter than air thereinto in order to be up in the air. Here, the descriptions or figures for the propaganda or advertisement may be directly described on an outer surface of the advertising balloon 10 that is up in the air. With the advertising balloon 10 floating in the air, the method of suspending the placard 20 with the descriptions or figures for the propaganda or advertisement described thereon can improve the noticeability and cause the desired effects to be obtained since the placard 20 is kept to be up in the air at a predetermined height from the ground and thus catches the eyes of people in a large area. However, such a method has limitations on the contents or formats that can be described in order to effectively communicate descriptions or simple figures for the propaganda or advertisement. That is, there are limitations in that the contents to be communicated should be expressed only by minimum characters, figures and the like that is necessary for communicating the meaning. Further, in order to change the expressed contents into other ones, the placard 20 should be replaced with another one having new contents after lowering the advertising balloon 10 in the air and then the new one should be installed again. Further, as for the communication formats, since only a still character, simple figure or the like can be perceived, there are limitations on the contents to be expressed.

Therefore, it is difficult to arouse interest due to monotonous contents, so that desired effects cannot be sufficiently obtained.

Disclosure of Invention Technical Problem The present invention is conceived to solve the aforementioned problems. Accordingly, an object of the present invention is to provide an apparatus and method for displaying an image using a large balloon capable of improving noticeability with a variety of formats and contents and thus maximizing desired effects by appropriately implementing an image for an advertisement, a movie, a public performance, a sports event or the like into a moving image as well as a still character or figure according to circumstances even while taking advantage of a balloon which makes it possible to obtain the desired effects by causing the balloon to catch the eyes of many neighboring people and thus improving the noticeability while the balloon is kept to be up in the air at a predetermined height from the ground or circles over an event site.

Technical Solution To achieve the object, the present invention provides an image displaying apparatus comprising a large balloon formed in a predetermined shape out of a roll stock of polyurethane film and installed at a predetermined height from the ground by injecting gas into the large balloon, an image projecting means fixedly installed at a side of the large balloon to project an image transmitted from an image transmitter; and a screen installed at the other side of the large balloon to display the image projected from the image projecting means thereon. Here, the roll stock of polyurethane film is prepared by thermal -bonding a polyurethane film, which contains a glossy or fluorescent material to show a variety of colors and becomes an outer surface of the large balloon, to a polyurethane film, which presents matte black for constructing the interior of the large balloon as a darkroom to implement optimal image quality and becomes an inner surface of the large balloon. The large balloon preferably has a predetermined shape concerning an event. Preferably, a ballonet is installed in the large balloon and is a airbag for controlling the whole volume of the large balloon and keeping the predetermined shape thereof constant according to temperature around an event site. Preferably, zipper is installed at an upper portion of the large balloon in order to easily discharge internal air. The image transmitter preferably receives an image through a network such as the

Internet, LAN, a fiber optic, a camera, or an image playing device. The image transmitter preferably further comprises a sound audio device for outputting sound corresponding to the image transmitted to the image projecting means. Preferably, the image transmitter is installed to circle over an event site by means of a circling-enabling apparatus and further comprises an imaging unit for taking an image around an event site and transmitting it to the image transmitter, and a wireless transmitter for transmitting the image, which is transmitted from the image transmitter to the image projecting means, in a wireless manner. A wireless receiver is fixedly installed at a portion of the large balloon to receive the image signal transmitted from the wireless transmitter and to transmit it to the image projecting means. Preferably, the image transmitter further comprises a wireless transmitter for transmitting the image transmitted from the image projecting means in a wireless manner. The large balloon is equipped with a circling-enabling apparatus for enabling the large balloon to circle over an event site, and a wireless receiver for receiving the image signal transmitted from the wireless transmitter and transmitting it to the image projecting means is installed at a portion of the large balloon. Preferably, the image projecting means is installed by being inserted from the outside into a housing that is formed to be separated from the interior of the large balloon at a side thereof and the housing is installed inside large balloon, and the housing is fixed through housing-fixing belts fastened to a plurality of fastening portions for the housing- fixing belts installed in the large balloon. The housing may comprise a projector-fixing support installed at a lower portion of the housing to position and support the projector, a polyethylene transparent window installed at a front end of the housing so that the image projected from the projector reaches the screen therethrough in a state where the housing is formed to be detachable from the interior of the large balloon, and a lid installed at a rear end of the housing to cover an opening portion. The lid may be provided with an intake fan at a side thereof and an exhaust fan at another side thereof in order to cool the projector by circulating internal air, a connecting terminal for use in transmitting a variety of image signals and supplying power to the projector, and a wire remote controller connecting terminal for use in adjusting the image on the screen by finely moving the projector through motors mounted at upper, lower, left and right sides of a lower end of the projector-fixing support when the image on the screen is distorted or comes up or down. Preferably, the screen is fixedly installed in a planar state at the other side of the large balloon, and the large balloon is formed with a transparent window for keeping the predetermined shape of the large balloon intact at a corresponding portion where the screen is installed. Preferably, the screen is fixedly installed in a planar state to be shifted toward the center of the large balloon by 0.3 to 2m, so that image quality can be improved by lowering illuminance around the screen upon use thereof outdoors and the size of the screen can be enlarged. An external light-shielding film bonded to the screen is preferably fixedly fastened to a portion of the large balloon facing the external light-shielding film by means of an elastic member. The screen is preferably installed on a portion of the other side of the large balloon such that the predetermined shape of the balloon is kept intact and there is no transparent window in front of the screen. A surface of the screen may be treated to be glossy so that the image projected from the projector is clearly seen at daylight through reflection of sunlight. Screens may be fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermined shape of the balloon is kept intact. The image projecting means, a prism, and a mirror may be sequentially installed between the screens, and images may be displayed while being projected from the image projecting means to be simultaneously projected onto the screens through the prism and the mirror. Screens may be fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact. A double-sided mirror may be installed between the screens, the image projecting means may be installed at lower portions of the screens, respectively, and images projected from the image projecting means may be displayed while being reflected on the double-sided mirror and projected onto the screens, respectively. Screens may be fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact. Image projecting means may be installed at lower portions of the screens, respectively, and images projected from the image projecting means may be displayed while being projected directly onto the screens which the respective projectors face. To achieve the object, the present invention provides a method of displaying an image transmitted from an image transmitter by using a large balloon with gas injected thereinto installed at a predetermined height from the ground, wherein the large balloon is formed in a predetermined shape out of a roll stock of polyurethane film; the roll stock of polyurethane film is prepared by thermal-bonding a polyurethane film, which contains a glossy or fluorescent material to show a variety of colors and becomes an outer surface of the large balloon, to a polyurethane film, which presents matte black for constructing the interior of the large balloon as a darkroom to implement optimal image quality and becomes an inner surface of the large balloon; and the image transmitted from the image transmitter through an image projecting means fixedly installed at a side of the large balloon is displayed by projecting the image onto a screen installed at the other side of the large balloon. The large balloon preferably has a predetermined shape concerning an event. Preferably, a ballonet is installed in the large balloon and is a airbag for controlling the whole volume of the large balloon and keeping the predetermined shape thereof constant according to temperature around an event site. Preferably, the image transmitter receives an image through a network such as the Internet, LAN, a fiber optic, a camera, or an image playing device. The image transmitter preferably outputs sound corresponding to the image transmitted to the image projecting means. Preferably, the image transmitter installed to circle over an event site by means of a circling-enabling apparatus takes an image around the event site and transmits it to the image projecting means in a wireless manner so as to display the image on the screen. Preferably, the large balloon circles over an event site by means of a circling- enabling apparatus, and an image is displayed on the screen by transmitting the image to the image projecting means through the image transmitter in a wireless manner. The image projecting means may be installed by being inserted from the outside into a housing that is formed to be detachable from the interior of the large balloon at a side thereof. The housing may be fixed inside large balloon by means of housing-fixing belts fastened to a plurality of fastening portions for the housing-fixing belts installed in the large balloon. Preferably, a lid is installed at a rear end of the housing to cover an opening portion of the housing and is provided with an intake fan and an exhaust fan to cool the image projecting means installed in the housing. The screen may be fixedly installed in a planar state at the other side of the large balloon, and a transparent window may be formed such that the predetermined shape of the large balloon is kept intact at a corresponding portion where the screen is installed. The screen may be fixedly installed in a planar state to be shifted toward the center of the large balloon by 0.3 to 2m, so that image quality can be improved by lowering illuminance around the screen upon use thereof outdoors and the size of the screen can be enlarged. Preferably, an external light-shielding film bonded to the screen and a portion of the large balloon facing the external light-shielding film are fixedly fastened to each other with an elastic member. The screen is preferably installed on a portion of the other side of the large balloon such that the predetermined shape of the balloon is kept intact and there is no transparent window in front of the screen. Preferably, a surface of the screen is treated to be glossy so that sunlight can be reflected thereon, thereby enabling the image projected from the projector to be clearly seen. Screens may be fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermined shape of the balloon is kept intact. The image projecting means, a prism, and a mirror may be sequentially installed between the screens. Images may be displayed while being projected from the image projecting means to be simultaneously projected onto the screens through the prism and the mirror. Screens may be fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact. A double-sided mirror may be installed between the screens. The image projecting means may be installed at lower portions of the screens, respectively. Images projected from the image projecting means may be displayed while being reflected on the double-sided mirror and projected onto the screens, respectively. Screens may be fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact. Image projecting means may be installed at lower portions of the screens, respectively. Images projected from the image projecting means may be displayed while being projected directly onto the screens which the respective projectors face.

Brief Description of the Drawings Fig. 1 is a view showing a case where a placard is suspended from a conventional balloon for use in a variety of publicity campaigns. Fig. 2 is a view showing an image displaying apparatus using a large balloon according to an embodiment of the present invention, which is installed in an event site. Figs. 3 and 4 are views showing the states where a lid of a projector installation housing is opened and closed at one side of the large balloon of Fig. 2, respectively. Fig. 5 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 2. Fig. 6 is a view showing a case where an image displaying apparatus using a large balloon according to another embodiment of the present invention is installed in an event site. Fig. 7 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 6. Fig. 8 is a view showing a case where an image displaying apparatus using a large balloon according to a further embodiment of the present invention is installed in an event site. Fig. 9 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 8. Figs. 10 and 11 are views showing image displaying apparatuses using large balloons according to still further embodiments of the present invention, which operate while the large balloons with a variety of shapes concerning events circle over event sites. Fig. 12 is a view showing a case where in the image displaying apparatus using the large balloon according to each of the embodiments of the present invention, a portion of the other side of the large balloon is used as a screen. Fig. 13 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 12. Fig. 14 is a sectional view showing a case where in the image displaying apparatus using the large balloon according to each of the embodiment of the present invention, the screen is shifted toward and installed at the center of the large balloon. Figs. 15 to 17 are views showing cases where two screens are installed in the image displaying apparatus using the large balloon according to each of the embodiments of the present invention. Fig. 18 is a view showing a case where in the image displaying apparatus using the large balloon according to each of the embodiments of the present invention, an external light-shielding film bonded to the screen and a portion of the large balloon facing the external light-shielding film are fixedly fastened to each other by elastic bands. <Explanation of reference numerals for designating main components in the drawings> 10: Advertising balloon 20: Placard 30: Connecting line 100, 100', 100": Image displaying apparatus using large balloon according to the present invention 110: Large balloon 111 : Transparent window 112: External light-shielding film 1 13: Circling-enabling apparatus 114: Zipper 115: Fastening portion for housing-fixing belt 116: Housing-fixing belt 117: Elastic band 120: Projector 121 : Projector installation housing 122 : Wireless receiver 123: Small generator or battery 124: Projector-fixing support 125: Intake fan 126: Exhaust fan 127: Connecting terminal 128: Polyethylene transparent window 129: Lid 130, 130' : Screen 131: Prism 132: Mirror 133: Double-sided mirror 140: Gas injection port 150: Ballonet 151: Elastic string 152: Relay switch 153: Motor and fan 154: Cover 200, 200', 200": Image transmitter 210: Image playing and transmitting means 211': Imaging unit 220: Wireless transmitter 230: Speaker 230': Circling-enabling apparatus 240: Power and signal line 300: Fixing cable 310: Large balloon fixing winch

Best Mode for Carrying out the Invention Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 2 is a view showing an image displaying apparatus using a large balloon according to an embodiment of the present invention, which is installed in an event site;

Figs. 3 and 4 are views showing the states where a lid of a projector installation housing is opened and closed at one side of the large balloon of Fig. 2, respectively; Fig. 5 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 2. An image displaying apparatus 100 using a large balloon according to this embodiment of the present invention displays an image, which is transmitted from an image transmitter 200, using a large balloon 110 fixedly installed at a predetermined height from the ground, as shown in Figs. 2 to 5. The image displaying apparatus 100 comprises the large balloon 110, a projector

120 as a means for projecting an image, and a screen 130. Although the large balloon 110 can be generally manufactured using various kinds of polyurethane products such as films, sheets, injections and sponges, a polyurethane film is used in the present invention. The large balloon 110 is formed out of a roll stock of polyurethane film into a general shape of a circular or elliptic globe or a specific shape of a character, an article or the like concerning an event to have a diameter of about 2 to 10m. The roll stock of polyurethane film is prepared by thermal-bonding a polyurethane film, which contains a glossy or fluorescent material to show a variety of colors and becomes an outer surface of the large balloon 110, to a polyurethane film, which presents matte black to construct the interior of the balloon as a darkroom for the purpose of implementation of optimal image quality and becomes an inner surface of the large balloon 110,. In the embodiments of the present invention, the large balloon 110 may be manufactured, for example, using a polyurethane film such as "No. JTC1003" available from Jin Heung Inc. Locating the polyurethane film presenting matte black on the inner surface of the large balloon 110 is to clearly display an image projected from the projector 120 onto the screen 130 by constructing the darkroom through shielding of light. Locating the polyurethane film presenting matte black on the inner surface of the large balloon 110 is one of important features of the present invention. In addition, locating the polyurethane film, which shows a variety of colors and contains glossy or fluorescent materials, on the outer surface of the large balloon 110 is to cause the large balloon 110 to catch the eyes of many people. Furthermore, a portion of the large balloon 110 is open so that the screen 130 fixedly installed in a planar state can be seen from the outside. The open portion of the large balloon 110 is formed with a transparent window 111 that is made of transparent polyurethane causing the screen 130 installed in the large balloon 110 to be in good sight and intactiy maintains the shape of the large balloon of a circular or elliptic globe or a character, an article or the like concerning an event. Further, a gateway through which an operator comes in and out of the large balloon 110 is installed at a portion of the large balloon 110 which does not overlap with the open portion. The gateway, which includes a special zipper 114 for preventing the helium gas injected into the interior of the large balloon from leaking, is installed at an upper portion so that the helium gas lighter than air can be easily discharged through the zipper 114 when the internal helium gas is removed upon dismantlement of the balloon. In the meantime, the helium gas injected into the large balloon 110 expands or contracts depending on external ambient temperature. Therefore, since the pressure of the internal helium gas increases when the external temperature rises, the volume of the large balloon 110 also increases, thus causing the screen 130 to ascend. On the contrary, since the pressure of the internal helium gas decreases when the external temperature drops, the volume of the large balloon 110 also decreases, thus causing the screen 130 to descend. Particularly, there may be a problem in that an external appearance of the large balloon deteriorates since the volume decreases upon contraction thereof. In order to solve the problem, the interior of the large balloon 110 is equipped with a ballonet 150, which is a airbag for controlling the whole volume of the large balloon 110 according to temperature around an outdoor event site and keeping the shape of the balloon constant. When the gas expands, the ballonet 150 is pushed by the increased internal pressure and elastic strings 151, which are installed between a semi-circle shape cover 154 and the large balloon 110 at regular intervals and keep a sealing state with a certain degree of elasticity maintained, extend to generate minute gaps therebetween. Therefore, an appropriate amount of air leaks out through the gaps, so that appropriate pressure and shape are normally maintained. On the contrary, when the gas contracts, the elastic strings 151 contract and a relay switch 152 connected to the elastic strings 151 then operates to cause a motor and fan 153 to rotate. Therefore, external air is introduced into the ballonet 150, so that the appropriate pressure and shape are normally maintained. The operation is consecutively repeated while responding to minute changes. The projector 120 is fixedly installed at a side of the large balloon 110 to face the screen 130, so that the projector 120 projects the image transmitted from the image transmitter 200 onto the screen 130. As for the installation of the projector 120, it is inserted from the outside into a projector installation housing 121 which is formed to be separated from the interior of the large balloon 110 at the side thereof. The reason is that the projector 120 can be easily installed and heat generated upon operation of the projector 120 can be smoothly dissipated to the outside to prevent the operation thereof from being stopped. Since the projector installation housing 121 is thermal-bonded to the large balloon 110 while defining a predetermined space at the side of the large balloon 110, the gas is prevented from leaking out. The projector installation housing 121 is dispersively fixed to a plurality of fastening portions 115 for housing- fixing belts, which are installed in the large balloon 110, through the housing-fixing belts 116 fastened thereto, so that the projector 120 is stably accommodated in the projector installation housing 121. The projector installation housing 121 comprises a projector-fixing support 124 which is installed at a lower portion of the projector installation housing 121 to position and support the projector 120, a polyethylene transparent window 128 which is installed at a front end of the projector installation housing 121 so that the image projected from the projector 120 reaches the screen 130 therethrough in a state where the projector installation housing is formed to be detachable from the interior of the large balloon 110, and a lid 129 which is installed at a rear end of the projector installation housing and covers an opening portion thereof. The lid 129 is equipped with an intake fan 125 for sucking external air at a side and an exhaust fan 126 for exhausting internal air at another side in order to cool the projector 120 by circulating the internal air. In addition, the lid 129 is also equipped with a connecting terminal 127 for use in transmitting a variety of image signals and supplying power to the projector 120, and a wire remote controller connecting terminal for use in adjusting the image on the screen 130 by finely moving the projector 120 through motors

(not shown) mounted at upper, lower, left and right sides of a lower end of the projector- fixing support 124 when the image on the screen 130 is distorted or comes up or down. In the projector installation housing 121, peripheral portions defining the polyethylene transparent window 128 and the lid 129 are formed by coating a hard and light polystyrene foam box with Foamax. Further, connecting portions between the peripheral portions and the large balloon 110 are formed of a polyurethane material identical to that of the large balloon 110. One of important features of the present invention is that the projector installation housing 121 is formed to be detachable from the interior of the large balloon 110 at the side thereof and the projector 120 is installed by being inserted thereinto from the outside. Moreover, in such a case where the projector 120 is installed in the large balloon

110 of the image displaying apparatus using the large balloon according to each of the embodiments of the present invention, the projector 120 may be installed in such a manner that a lower end of the projector 120 is fixedly positioned on a projector installation box which is inserted and additionally installed in the large balloon 1 10. The screen 130 is installed at the other side of the large balloon 110 to face the projector 120, so that the image projected from the projector 120 is displayed thereon. In the embodiments of the present invention, a "Rear Projection Screen" with a dimension of 70 to 300 inches may be used as the screen 130, which maximizes convenience upon handling of the large balloon by enabling the screen to be folded or rolled like a tent. Since the screen 130 is in the form of a rectangle, gaps are produced when the screen 130 is bonded to the circular open portion of the large balloon 110. Therefore, in order to effectively construct the aforementioned darkroom, the gaps are closed up with external light-shielding films 112. In addition, a corresponding portion of the large balloon 110 where the screen 130 is installed is formed with the transparent window 111 to keep the shape of the large balloon intact. The image transmitter 200, which is provided on the ground of the event site, transmits an image to the projector 120 through a signal line 240. At this time, the image is input directly from media such as a DND, a PC, a set-top box or a video camera, or input through a network such as the Internet. For example, the image transmitter 200 includes an image playing and transmitting means 210 such as a PC or a DND, and a speaker 230 as a sound audio device for outputting voice or music corresponding to the image transmitted to the projector 120 from the image playing and transmitting means 210. In addition, using fixing cables 300 connected to a plurality of fixing hooks (not shown) installed on the large balloon 110 of the image displaying apparatus 100, the image displaying apparatus 100 is fixedly installed at a height of within about 40m to be inclined forward at an angle of 10 to 35 degrees. In such a case, the length of each fixing cable 300 is adjusted through a large balloon-fixing winch 310 that can be moved and selectively fixed on the ground. The process of installing the image displaying apparatus using the large balloon according to the embodiment of the present invention thus constructed will be described below. First, in a state where the image displaying apparatus 100 is unfolded at an event site where it will be installed, after injecting helium gas into the large balloon 110 through a gas injection port 140, the lid 129 of the housing 121 is opened and the projector 120 is then positioned on the projector-fixing support 124 in the housing 121 and fixedly installed thereto. In such a case, it is also possible to securely fix the projector 120 using additional fixing bands. Then, after a variety of lines through which power and image signals supplied to the projector 120, control signals of the remote controller, and the like are transmitted are connected to the projector 120 through the connecting terminal 127, the focus and condition of an image projected on the screen 130 are adjusted and the lid 129 is then closed. Next, the image displaying apparatus 100 is fixedly installed at a height of within about 40m to be inclined forward at an angle of 10 to 35 degrees by controlling the fixing cables 300 connected to the image displaying apparatus 100 through a plurality of the hooks attached thereto using the large balloon-fixing winches 310. Here, the image displaying apparatus 100 may be installed adjacent to a ceiling or a bottom of the interior of a room by mixing helium and air at a proper ratio. In a case where the image displaying apparatus 100 is suspended at a minimum load from the ceiling by injecting helium gas into the large balloon 110 after injecting a predetermined amount of air thereinto in order to cause the image displaying apparatus 100 to be lighter, the fixing cables 300 connected to the ground may be removed. Thus, viewers do not trip on or are not hindered by the fixing cables. On the other hand, in a case where the installation height of the image displaying apparatus 100 is the same as the ground by injecting only air into the large balloon 110 in order to place the image displaying apparatus 100 on the bottom, it is possible to make viewers comfortable. Further, when the image displaying apparatus 100 is dismantled, the dismantling process is performed in reverse order of the installing process. That is, after the internal helium gas is discharged by opening the zipper 114 positioned at the upper portion of the large balloon 110, the large balloon 110 is folded like a tent for safekeeping and carrying. The process of operating the image displaying apparatus using the large balloon according to the embodiment of the present invention will be described as follows. When in the image playing and transmitting means 210 of the image transmitter 200 installed on the ground of the event site, the image input directly from the media such as a DVD, a PC, a set-top box, or a video camera or input through the network such as the Internet is transmitted along with power to the projector 120 through the power and signal line 240, the projector 120 projects the image onto the screen 130 to display the image. Thus, it is possible to maximize desired effects of an advertisement, a publicity campaign or the like using the large balloon 110. It is possible to further maximize the effects by outputting voice and music corresponding to the image projected from the projector 120 through an amplifier and the speaker 230. At this time, since a lot of heat is generated during the operation of the projector 120, the heat generated from the projector 120 which operates in the housing 121 is dissipated by circulating the internal air through the intake and exhaust fans 125 and 126 installed at the lid 129, so that the projector 120 is maintained in a normal operating state. Fig. 6 is a view showing a case where an image displaying apparatus using a large balloon according to another embodiment of the present invention is installed in an event site, and Fig. 7 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 6. An image displaying apparatus 100' using a large balloon according to present embodiment of the present invention displays an image, which is transmitted from an image transmitter 200', using a large balloon 110 fixedly installed at a predetermined height from the ground, as shown in Figs. 6 and 7. The image displaying apparatus 100' is identical to the image displaying apparatus 100 using the large balloon according to the aforementioned first embodiment of the present invention in that they comprise the large balloon 110, the projector 120, and the screen 130. However, there is a difference therebetween in that the image of the image transmitter 200' is transmitted to the image displaying apparatus 100' in a wireless manner.

Hereinafter, descriptions of portions identical to those of the image displaying apparatus 100 using the large balloon according to the previous embodiment of the present invention will be omitted, and only portions different from the previous embodiment will be described. The image transmitter 200' installed on the ground at an event site transmits, in a wireless manner, an image to the image displaying apparatus 100' installed in the air at a predetermined height from the ground, and the image transmitter 200' further comprises a wireless transmitter 220 for transmitting the image to the projector 120 in a wireless manner. In addition, a wireless receiver 122 for receiving the image signal transmitted from the wireless transmitter 220 and transmitting it to the projector 120 is installed in the large balloon 110, and a small generator or battery 123 for independently supplying power to the wireless receiver 122 and the projector 120 is installed on the outside of the large balloon 110. The operating process of the image displaying apparatus using the large balloon according to the present embodiment of the present invention thus constructed will be described below. When in the image playing and transmitting means 210 of the image transmitter 200 installed on the ground at the event site, the image input directly from the media such as a DND, a PC, a set-top box, or a video camera or input through the network such as the

Internet is transmitted to the projector 120 through the wireless transmitter 220 in a wireless manner such as by RF, a wireless LAN or Bluetooth, the wireless receiver 122 installed in the large balloon 110 receives the image signal transmitted from the wireless transmitter 220 and transmits it to the projector 120. The projector 120 projects the image onto the screen 130 to display the image. Thus, it is possible to maximize desired effects of an advertisement, a publicity campaign or the like using the large balloon 110. It is possible to further maximize the effects by outputting voice and music corresponding to the image projected from the projector 120 through an amplifier and a speaker 230. Here, since the image signal is transmitted from the image transmitter 200' to the image displaying apparatus 100' in a wireless manner, the wireless receiver 122 and the projector 120 are independently supplied with the power by fixedly installing the small generator or battery 123 on the outer lower end of the large balloon 110. In the image displaying apparatus using the large balloon according to the present embodiment of the present invention, only the large balloon 110 seems to be up in the air due to removal of the power and signal line, which causes viewers to feel mysterious and functions as a primary factor of the improvement of noticeability. In addition, when the situation of a spot far from the large balloon 110 should be displayed through an image like a case where an actual spot is far from a site of viewers as in a golf match, it is possible to separate the image playing and transmitting means 210 for providing the image signal, which comprises the media such as a DVD, a PC or a video camera, from the wireless transmitter 220 in the image transmitter 200' and to display the image by connecting them through wires. Fig. 8 is a view showing a case where an image displaying apparatus using a large balloon according to a further embodiment of the present invention is installed in an event site, and Fig. 9 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 8. An image displaying apparatus 100' using the large balloon according to the further embodiment of the present invention displays an image, which is transmitted from an image transmitter 200', using a large balloon 110 fixedly installed at a predetermined height from the ground, as shown in Figs. 8 and 9. The image displaying apparatus 110" is identical to the image displaying apparatuses 100 and 100' using the large balloon according to the aforementioned first and second embodiments of the present invention in that they comprise the large balloon 110, the projector 120, and the screen 130. However, the image displaying apparatus of this embodiment is different from the image displaying apparatus using the large balloon according to the first embodiment in that the image is transmitted in a wireless manner, and is also different from the image displaying apparatus using the large balloon according to the second embodiment in view of the image transmitter. Hereinafter, descriptions of portions identical to those of the image displaying apparatus using the large balloon according to each of the previous embodiments of the present invention will be omitted, and only portions different from the previous embodiments will be described. The image transmitter 200', which transmits an image to the image displaying apparatus 100' using the large balloon according to this embodiment of the present invention, is installed to circle over an event site by mans of a circling-enabling apparatus 230' in the same manner as an airship. The image transmitter 200' comprises an imaging unit 211' for taking an image around the event site and transmitting it to the image playing and transmitting means 210, and a wireless transmitter 220 for transmitting the image transmitted from the image playing and transmitting means 210 to the projector 120 in a wireless manner. The operating process of the image displaying apparatus using the large balloon according to this embodiment of the present invention thus constructed will be described below. When the image transmitter 200', e.g., an airship, that circles over the event site using the circling-enabling apparatus 230' transmits the input image around the event site taken by the imaging unit 211 ' to the projector 120 through the wireless transmitter 220 in a wireless manner, the wireless receiver 122 installed in the large balloon 110 receives the image signal transmitted from the wireless transmitter 220 and transmits it to the projector 120. Then, the projector 120 can display the actual image in real time by projecting the image onto the screen 130 to maximize a sensation of reality. Figs. 10 and 11 are views showing image displaying apparatuses using large balloons according to still further embodiments of the present invention, which operate while the large balloons with a variety of shapes concerning events circle over event sites. An image displaying apparatus 100" using a large balloon according to this embodiment of the present invention displays an image transmitted from an image transmitter 200' using the large balloon 110, which is installed to circle over an event site, as shown in Figs. 10 and 11. The image displaying apparatus 100' is identical to the image displaying apparatus 100 using the large balloon according to each of the embodiments of the present invention in that it comprises the large balloon 110 of a general shape of a circular or elliptic globe or one of various specific shapes concerning the event, the projector 120, and the screen 130. However, this embodiment is different from the image displaying apparatus using the large balloon according to each of the previous embodiments in that the large balloon 110 displays an image while circling over an event site. Hereinafter, descriptions of portions identical to those of the image displaying apparatus using the large balloon according to each of the previous embodiments of the present invention will be omitted, and only portions different from the previous embodiments will be described. The image displaying apparatus 100" using a large balloon according to this embodiment of the present invention is installed to circle over the event site using a circling-enabling apparatus 113 in the same manner as an airship. The image displaying apparatus further comprises a wireless transmitter 220 which transmits the image transmitted to the projector 120 in a wireless manner so that the image received from the image transmitter 200' can be seen at a relatively large peripheral area around the event site. A wireless receiver 122, which receives the image signal transmitted from the wireless transmitter 220 and transmits it to the projector 120, is installed at a side of the image displaying apparatus 100". Particularly, for example, the large balloon 110 may be formed to take the shape of an automobile in case of an automobile-related event, as shown in Fig. 11. Accordingly, it is possible to more improve the effects of an advertisement. The operating process of the image displaying apparatus using the large balloon according to this embodiment of the present invention thus constructed will be described below. When the image from the image transmitter 200' is transmitted to the projector 120 through the wireless transmitter 220 in a wireless manner while the image displaying apparatus 100" circles directly over the event site using the circling-enabling apparatus 113, the wireless receiver 122 installed in the large balloon 110 receives the image signal transmitted from the wireless transmitter 220 and transmits it to the projector 120, and the projector 120 then projects the image onto the screen 130, so that the image displaying apparatus 100" covers a relatively large area while going around every corner of the event site, thereby causing more people to see the image. Meanwhile, Fig. 12 is a view showing a case where in the image displaying apparatus using the large balloon according to each of the embodiments of the present invention, a portion of the other side of the large balloon is used as a screen, and Fig. 13 is a view specifically showing the image displaying apparatus using the large balloon of Fig. 12. Instead of opening a portion of the other side of the large balloon 110 to fixedly install the screen 130 in a planar state as described above and installing the transparent window 111 at the opened portion of the other side of the large balloon 110 to keep the predetermined shape of the balloon intact, a screen 130' is installed directly on the corresponding portion of the other side of the large balloon 110. In such a case, since the projector 120 can adjust the image to be adapted to the curved screen, it does not affect the quality of the projected image and causes viewers to feel mysterious. Furthermore, if sunlight is reflected on a surface of the screen 130' by treating the surface to be glossy, the image projected from the projector 120 can be clearly seen. In addition, screens for displaying images are standardized according to the characteristics of the images. However, since the screen herein is formed in an arcuate shape and thus is not limited to the standardization, it is possible to smoothly display an image. That is, it is possible to prevent upper and lower sides of the screen to be dark. Fig. 14 is a sectional view showing a case where in the image displaying apparatus using the large balloon according to each of the embodiment of the present invention, the screen is shifted toward and installed at the center of the large balloon. The screen employed in the image displaying apparatus according to each of the embodiments of the present invention is fixedly installed in a planar state after being shifted toward the center of the large balloon 110 by 0.3 to 2m. With the installation method of the screen 130, since the screen more deeply enter the interior of the large balloon 110 from the transparent window 111, the screen becomes darker to increase the darkroom effects, the screen itself is larger, and the distance between the projector 120 and the screen 130 is shorter, thereby improving the image quality. Figs. 15 to 17 are views showing cases where two screens are installed in the image displaying apparatus using the large balloon according to each of the embodiments of the present invention. Although the two screens 130 are fixedly installed in the large balloon 110 in a planar state to face each other as shown in Figs. 15 to 17, they may be fixedly installed on the surface of the large balloon 110 such that the predetermined shape of the balloon is kept intact. First, in a case where an image is simultaneously seen on both sides using a single projector, the projector 120, a prism 131 and a mirror 132 are sequentially installed between the screens 130 and the image is projected from the projector 120 to the prism 131 based on a general principle of a camera. The image projected to the prism 131 is then projected to the mirror 132, and the mirror 132 causes the image to be simultaneously projected onto the two facing screens 130 positioned at both sides of the large balloon 110. By simultaneously projecting the image onto the both sides of the large balloon 110 to display an image, an advertisement or a publicity campaign can be disclosed to more people. Next, in a case where two images are seen on different sides using two projectors, respectively, a double-sided mirror 133 is installed between the screens 130 and projectors 120 are installed at lower portions of the screens 130, respectively. The images projected from the projectors 120 are reflected on the double-sided mirror 133 and displayed while being projected onto the screen 130. Thus, the contents of images can also be changed according to a viewing side and two different images can be displayed on the single large balloon. In addition, in another case where two images are seen on different sides using two projectors, respectively, the double-sided mirror 133 installed between the screens 130 is removed. The images are displayed by directly projecting them onto the screens 130 to which the projectors 120 installed at the lower portions of the screens 130 are oriented, respectively. This simplifies the configuration, resulting in advantages in view of manufacture, safekeeping, handling and the like. Fig. 18 is a view showing a case where in the image displaying apparatus using the large balloon according to each of the embodiments of the present invention, an external light-shielding film bonded to the screen and a portion of the large balloon facing the external light-shielding film are fixedly fastened to each other by elastic bands. Since the size of the large balloon 110 may be changed slightly according to the pressure of the internal helium gas, the change of the size is minimized using elasticity by fixedly fastening the external light-shielding films 112 bonded to the screens 130 to portions of the large balloon 110 facing the external light-shielding films 112 through elastic bands 117 when the screens are fixedly fastened to the large balloon, whereby it is possible to nearly remove distortion of the image to be displayed. The present invention is not limited to the embodiments described above, it is possible to make various modifications thereto within the scope of the invention defined by the appended claims, and the modifications are also included within the scope of the present invention.

Industrial Applicability As described above, with the apparatus and method for displaying an image using a large balloon according to the present invention, it is possible to eliminate limitations on presentation and to fully satisfy visual aspects by appropriately implementing an image for an advertisement, a movie, a public exhibition, a sports event or the like into a moving image as well as a still character or figure according to circumstances while taking advantage of a balloon which makes it possible to obtain desired effects by causing the balloon to catch the eyes of many neighboring people and thus improving noticeability while the balloon is kept to be up in the air at a predetermined height from the ground or circles over an event site. In addition, auditory aspects may be added by outputting voice and music corresponding to the image. Accordingly, it is possible to maximize desired effects by improving noticeability with various formats and contents. Further, since all cables connected to the large balloon may be removed, only the large balloon seems to be up in the air, which causes viewers to feel mysterious and improves noticeability. In addition, by displaying an image taken from over the event site in real time, it is possible to provide an actual image to maximize a sensation of reality.

Claims

1. An image displaying apparatus using a large balloon, comprising: the large balloon being formed in a predetermined shape out of a roll stock of polyurethane film and installed at a predetermined height from the ground by injecting gas into the large balloon, the roll stock of polyurethane film being prepared by thermal- bonding a polyurethane film, which contains a glossy or fluorescent material to show a variety of colors and becomes an outer surface of the large balloon, to a polyurethane film, which presents matte black for constructing the interior of the large balloon as a darkroom to implement optimal image quality and becomes an inner surface of the large balloon; an image projecting means fixedly installed at a side of the large balloon to project an image transmitted from an image transmitter; and a screen installed at the other side of the large balloon to display the image projected from the image projecting means thereon.

2. The apparatus as claimed in claim 1, wherein the large balloon has a predetermined shape concerning an event.

3. The apparatus as claimed in claim 1, wherein a ballonet is installed in the large balloon, the ballonet being a airbag for controlling the whole volume of the large balloon and keeping the predetermined shape thereof constant according to temperature around an event site.

4. The apparatus as claimed in claim 1, wherein a zipper is installed at an upper portion of the large balloon in order to easily discharge internal air.

5. The apparatus as claimed in claim 1, wherein the image transmitter receives an image through a network such as the Internet, a camera, or an image playing device.

6. The apparatus as claimed in claim 1, wherein the image transmitter further comprises a sound audio device for outputting sound corresponding to the image transmitted to the image projecting means.

7. The apparatus as claimed in claim 1, wherein the image transmitter is installed to circle over an event site by means of a circling-enabling apparatus and further comprises an imaging unit for taking an image around an event site and transmitting it to the image transmitter, and a wireless transmitter for transmitting the image, which is transmitted from the image transmitter to the image projecting means, in a wireless manner; and a wireless receiver is fixedly installed at a portion of the large balloon to receive the image signal transmitted from the wireless transmitter and to transmit it to the image projecting means.

8. The apparatus as claimed in claim 1, wherein the image transmitter further comprises a wireless transmitter for transmitting the image transmitted from the image projecting means in a wireless manner; the large balloon is equipped with a circling- enabling apparatus for enabling the large balloon to circle over an event site; and a wireless receiver for receiving the image signal transmitted from the wireless transmitter and transmitting it to the image projecting means is installed at a portion of the large balloon.

9. The apparatus as claimed in claim 1, wherein the image projecting means is installed by being inserted from the outside into a housing that is formed to be separated from the interior of the large balloon at a side thereof, and the housing is fixed through housing-fixing belts fastened to a plurality of fastening portions for the housing-fixing belts installed in the large balloon.

10. The apparatus as claimed in claim 9, wherein the housing comprises a projector- fixing support installed at a lower portion of the housing to position and support the projector, a polyethylene transparent window installed at a front end of the housing so that the image projected from the projector reaches the screen therethrough in a state where the housing is formed to be detachable from the interior of the large balloon, and a lid installed at a rear end of the housing to cover an opening portion, the lid being provided with an intake fan at a side thereof and an exhaust fan at another side thereof in order to cool the projector by circulating internal air, a connecting terminal for use in transmitting a variety of image signals and supplying power to the projector, and a wire remote controller connecting terminal for use in adjusting the image on the screen by finely moving the projector through motors mounted at upper, lower, left and right sides of a lower end of the projector-fixing support when the image on the screen is distorted or comes up or down.

1 1. The apparatus as claimed in claim 1, wherein the screen is fixedly installed in a planar state at the other side of the large balloon, and the large balloon is formed with a transparent window for keeping the predetermined shape of the large balloon intact at a corresponding portion where the screen is installed.

12. The apparatus as claimed in claim 11, wherein the screen is fixedly installed in a planar state to be shifted toward the center of the large balloon by 0.3 to 2m, so that image quality can be improved by lowering illuminance around the screen upon use thereof outdoors and the size of the screen can be enlarged.

13. The apparatus as claimed in claim 11 or 12, wherein an external light-shielding film bonded to the screen is fixedly fastened to a portion of the large balloon facing the external light-shielding film by means of an elastic member.

14. The apparatus as claimed in claim 1, wherein the screen is installed on a portion of the other side of the large balloon such that the predetermined shape of the balloon is kept intact and there is no transparent window in front of the screen.

15. The apparatus as claimed in claim 14, wherein a surface of the screen is treated to be glossy so that the image projected from the projector is clearly seen at daylight through reflection of sunlight.

16. The apparatus as claimed in claim 1, wherein screens are fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermined shape of the balloon is kept intact, the image projecting means, a prism, and a mirror are sequentially installed between the screens, and images are displayed while being projected from the image projecting means to be simultaneously projected onto the screens through the prism and the mirror.

17. The apparatus as claimed in claim 1 , wherein screens are fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact, a double-sided mirror is installed between the screens, the image projecting means are installed at lower portions of the screens, respectively, and images projected from the image projecting means are displayed while being reflected on the double-sided mirror and projected onto the screens, respectively.

18. The apparatus as claimed in claim 1, wherein screens are fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact, image projecting means are installed at lower portions of the screens, respectively, and images projected from the image projecting means are displayed while being projected directly onto the screens which the respective projectors face.

19. A method of displaying an image transmitted from an image transmitter by using a large balloon with gas injected thereinto installed at a predetermined height from the ground, wherein the large balloon is formed in a predetermined shape out of a roll stock of polyurethane film, the roll stock of polyurethane film being prepared by thermal-bonding a polyurethane film, which contains a glossy or fluorescent material to show a variety of colors and becomes an outer surface of the large balloon, to a polyurethane film, which presents matte black for constructing the interior of the large balloon as a darkroom to implement optimal image quality and becomes an inner surface of the large balloon, and the image transmitted from the image transmitter through an image projecting means fixedly installed at a side of the large balloon is displayed by projecting the image onto a screen installed at the other side of the large balloon.

20. The method as claimed in claim 19, wherein the large balloon has a predetermined shape concerning an event.

21. The method as claimed in claim 19, wherein a ballonet is installed in the large balloon, the ballonet being a airbag for controlling the whole volume of the large balloon and keeping the predetermined shape thereof constant according to temperature around an event site.

22. The method as claimed in claim 19, wherein the image transmitter receives an image through a network such as the Internet, a camera, or an image playing device.

23. The method as claimed in claim 19, wherein the image transmitter outputs sound corresponding to the image transmitted to the image projecting means.

24. The method as claimed in claim 19, wherein the image transmitter mstalled to circle over an event site by means of a circling-enabling apparatus takes an image around the event site and transmits it to the image projecting means in a wireless manner so as to display the image on the screen.

25. The method as claimed in claim 19, wherein the large balloon circles over an event site by means of a circling-enabling apparatus, and an image is displayed on the screen by transmitting the image to the image projecting means through the image transmitter in a wireless manner.

26. The method as claimed in claim 19, wherein the image projecting means is installed by being inserted from the outside into a housing that is formed to be detachable from the interior of the large balloon at a side thereof.

27. The method as claimed in claim 26, wherein the housing is fixed by means of housing-fixing belts fastened to a plurality of fastening portions for the housing-fixing belts installed in the large balloon.

28. The method as claimed in claim 27, wherein a lid is installed at a rear end of the housing to cover an opening portion of the housing and is provided with an intake fan and an exhaust fan to cool the image projecting means installed in the housing.

29. The method as claimed in claim 19, wherein the screen is fixedly installed in a planar state at the other side of the large balloon, and a transparent window is formed such that the predetermined shape of the large balloon is kept intact at a corresponding portion where the screen is installed.

30. The method as claimed in claim 29, wherein the screen is fixedly installed in a planar state to be shifted toward the center of the large balloon by 0.3 to 2m, so that image quality can be improved by lowering illuminance around the screen upon use thereof outdoors and the size of the screen can be enlarged.

31. The method as claimed in claim 29 or 30, wherein an external light-shielding film bonded to the screen and a portion of the large balloon facing the external light-shielding film are fixedly fastened to each other with an elastic member.

32. The method as claimed in claim 19, wherein the screen is installed on a portion of the other side of the large balloon such that the predetermined shape of the balloon is kept intact and there is no transparent window in front of the screen.

33. The method as claimed in claim 32, wherein a surface of the screen is treated to be glossy so that sunlight can be reflected thereon, thereby enabling the image projected from the projector to be clearly seen.

34. The method as claimed in claim 19, wherein screens are fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermined shape of the balloon is kept intact, the image projecting means, a prism, and a mirror are sequentially installed between the screens, and images are displayed while being projected from the image projecting means to be simultaneously projected onto the screens through the prism and the mirror.

35. The method as claimed in claim 19, wherein screens are fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact, a double-sided mirror is installed between the screens, the image projecting means are installed at lower portions of the screens, respectively, and images projected from the image projecting means are displayed while being reflected on the double-sided mirror and projected onto the screens, respectively.

36. The method as claimed in claim 19, wherein screens are fixedly installed to face each other in a planar state within the large balloon or on the surface of the large balloon such that the predetermine shape of the balloon is kept intact, image projecting means are installed at lower portions of the screens, respectively, and images projected from the image projecting means are displayed while being projected directly onto the screens which the respective projectors face.