CN101971081B - System and method for thermally controlling an electronic display - Google Patents
System and method for thermally controlling an electronic display Download PDFInfo
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- CN101971081B CN101971081B CN200880124923.0A CN200880124923A CN101971081B CN 101971081 B CN101971081 B CN 101971081B CN 200880124923 A CN200880124923 A CN 200880124923A CN 101971081 B CN101971081 B CN 101971081B
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Abstract
Embodiments relate generally to various thermal control features for electronic displays. One feature comprises a closed loop isolated gas chamber, where a first chamber is in contact with the display surface and transfers heat between the isolated gas and the display surface. A second chamber is in gaseous communication with the first chamber and is adapted to heat or cool the isolated gas and reintroduce the isolated gas into the first chamber. Another feature uses constricted convection to facilitate the cooling of the backlight assembly for the electronic display. Another feature uses an air curtain to further heat or cool the exterior viewing surface of the display. Another feature uses a linear polarizer with an insulating gap to reduce the solar loading of the display stack and provide insulation from the ambient air temperature. Another feature uses a fluid system to contact fluid coolant with the display surface in order to cool the display. Each of the features may be used alone, or in combination to provide the proper operating temperature for the display depending on its desired operating environment.
Description
Technical field
Illustrative embodiments relates generally to the heating/cooling system for electronic console.
Background technology
Electronic console uses in indoor, temperature controlled environment usually.Although the possibility of the temperature around display relatively stable (near room temperature), the element of display can produce amount of heat.If can not suitably eliminate these heats, such heat may damage display or shorten its life-span.Traditionally, the conduction and convection heat transfer system has been used for eliminating heat by the sidewall as much as possible of display from the electronic component of display.When aforementioned heat transfer system was to a certain degree successful in the past, current electronic console required larger cooling (in some cases, reaching heating) ability.
The hyundai electronics display just may use in other situation above and below room temperature at outdoor environment and environment temperature now.Except the heat transfer from surrounding air, pass display surface, also become principal element from the radiant heat transfer of the sun.Some use and the position in, it is very general that 200 watts or larger power pass the aforementioned display surface.In addition, market day by day need to reach more greatly brighter, sometimes even need high-resolution display.Along with the increase of electronic console size, will absorb more heat from the sun, and more heat will import display into.For defeating from the surround lighting of the sun and the reflection of circumferential surface, display must produce more light, and this also causes display and/or its backlight assembly to produce more heat usually.
In addition, in some applications, temperature may drop to far below room temperature.Some elements of electronic console may break down or permanent damage because being exposed in such low temperature.For example, the performance of the liquid crystal material in liquid crystal display (LCD) may be subjected to low temperature effect.
Summary of the invention
Illustrative embodiments can comprise one or more heat control parts disclosed herein.Disclose a plurality of heat control parts, and these parts can be exercised use separately or by any being combined into.The precise combination of parts will depend on the concrete cooling/heating needs of related display, and this depends on the type of display, size and the specific environment thereof of display.Embodiment can implement by any type of electronic console, includes but not limited to: LCD, light emitting diode (LED), Organic Light Emitting Diode (OLED), field-emitter display (FED), cathode-ray tube (CRT) (CRT), plasma, and the projection display.Exemplary embodiment will be implemented with LCD display.
A thermal part relates to the separation gas cooling system.Gas system is preferably the closed-loop path that comprises the first air chamber with transparent front plate and have the second air chamber of cooling air supplying system.The first air chamber is in the front of observable of electronic console and with it with prolonging.Transparent front plate is seated in the front on electronic console surface, forms the degree of depth of the first air chamber.Cooling chamber fan or equivalent device can be positioned at the cooling air supplying system and can be used for around separation gas cooling chamber loop propelling gas.Through the first air chamber, its contact electronic console is surperficial, thereby absorbs heat from display surface along with gas.Because gas and the respective surfaces of the first air chamber are transparent, it is fabulous that picture quality keeps.By after the first transparent air chamber, gas can import the cooling air supplying system of back and carry out there cooling at gas.
Another thermal part can use the separation gas system and be heating arrangement, replaces its cooling power or except cooling power.The separation gas heating system is also the closed-loop system that has the first air chamber of display surface front and comprise the second Room of heating plenum system or cooling/heating plenum system.Heating element can be placed in plenum system to heat the second indoor gas.Along with gas is forced into the first Room, it can pass to display surface with its heat.Afterwards, gas can turn back to plenum system and carries out another heat cycles.Plenum system can be only as the cooling air supplying system, only as the heating plenum system or as the combination of heating and cooling plenum system; All these all depend on particular display and specific work environments thereof.
Some embodiments can be placed on the electronic component that is used for the operation electronic console in the plenum system of separation gas chamber.Electronic component can include but not limited to: transformer, circuit board, processor, resistor, capacitor, battery, motor, power supply, lighting device, wiring and wire harness, and switch.If plenum system is as the cooling air supplying system, the cold air in plenum system can further help the cooling electronic component that naturally produces during operation heat.In addition, if plenum system as the thermal source of display, also can heat gas in plenum system from the natural heat of electronic component, thereby reduce the energy that need to be applied to heating element.
Can use in some embodiments linear polariser to be carried in daylight on electronic console with further minimizing.This polarizer can use in conjunction with the separation gas chamber, or can be placed on simply the front of electronic console but heat insulation gap is arranged between the polarizer and display.The heat that transmits between the polarizer and display is reduced in heat insulation gap.
Some electronic consoles such as LCD need backlight assembly to produce image on display surface.Backlight assembly is generally the large thermal source of display.Therefore, some embodiments can utilize limited convection system to come the back light unit of cooling display.Limited convection system can comprise limited convection-plate, and this convection-plate is placed to backlight assembly very close to form the gap.Gas is forced to and passes the gap to help more effectively cooling backlight assembly.In a preferred embodiment, the wall of plenum system can consist of limited convection-plate.
Some embodiments also can use air curtain device, and this air curtain device is forced (heat or cold) air on the outside surface of display assembly.
At last, some embodiments can use the liquid assembly, and this liquid assembly makes liquid contact display surface to carry out cooling to it.Liquid can be the coolant liquid of limpid in fact form, and this liquid pumps into by the ante-chamber that comprises display surface.
Description of drawings
Can understand better illustrative embodiments of the present invention by reading following detailed description and accompanying drawing, wherein same Reference numeral refers to same part, and wherein:
Fig. 1 is the stereographic map of the exemplary embodiment relevant with the exemplary electrical sub-display.
Fig. 2 is the exploded perspective view of exemplary embodiment that the assembly of separation gas cooling system is shown.
Fig. 3 is the plan view from above of the exemplary embodiment of cooling chamber.
Fig. 4 is the embodiment forward direction stereographic map of the transparent front surface of the first air chamber especially of isolation cooling chamber.
Fig. 5 shows for the backward stereographic map of the embodiment of isolation cooling chamber the optional electric device that is placed in plenum system.
Fig. 6 shows the surface elements that can be included on plenum system for the backward stereographic map of the embodiment of isolation cooling chamber.
Fig. 7 is the plan view from above of the exemplary embodiment of cooling chamber, shows the surface elements that can be included on plenum system.
Fig. 8 is for the forward direction stereographic map of the embodiment of isolation cooling chamber, comprising electrothermal module.
Fig. 9 is the plan view from above of the exemplary embodiment of cooling chamber, comprising electrothermal module.
Figure 10 is the exploded perspective view of exemplary embodiment that the assembly of separation gas cooling system is shown.
Figure 11 is the plan view from above of the exemplary embodiment of heating chamber.
Figure 12 is the backward stereographic map of the embodiment of heating chamber, shows optional electric device and heating element.
Figure 13 and 14 wherein has separation gas system or heat insulation gap for the sectional view of the exemplary embodiment of use linear polariser.
Figure 15 A and 15B are the side view of limited exemplary embodiment to flow cooling system with limited convection-plate.
Figure 16 is that the cooling air supplying system is as the plan view from above of the exemplary embodiment of limited convection-plate.
Figure 17 A-17C is that the cooling air supplying system is as the sectional view of the embodiment of limited convection-plate.
Figure 18 is the front plan view of the display of use air curtain device.
Figure 19 is the sectional view of the display of use air curtain device.
Figure 20 is the diagram for the assembly of the display of liquid cooling.
Embodiment
The spirit and scope that should be appreciated that disclosed embodiment comprise that heat control includes but not limited to the display of LCD.Be the simple purpose of setting forth, embodiment all is described in conjunction with the assembly of LCD display.As an example but non-ly be intended to restriction, embodiment can use together with the display that is selected from lower group: LCD, light emitting diode (LED), Organic Light Emitting Diode (OLED), field-emitter display (FED), cathode-ray tube (CRT) (CRT), plasma, and the projection display.In addition, embodiment can be together with comprising that still the display of undiscovered other type uses.Particularly, can predict, embodiment can be fit to use together with panchromatic, dull and stereotyped OLED display well.In addition, especially predictably, embodiment can use together with sizable, High Resolution LCD display.When embodiment described here was fit to outdoor environment well, they also can be fit to the thermal stability indoor application (as the environment of plant, refrigeratory/household freezer etc.) on the line of display.
The separation gas cooling system
As shown in fig. 1, when display 10 is exposed in outdoor physical environment, in the situation that do not have the interior temperature variation of the cooling device display 10 of some kind very large.Like this, display 10 may not normally move maybe may have and reduce a lot of life-spans.At direct daylight aspect the internal temperature rising that causes display 10, problem is arranged especially.
In Fig. 1, the viewing area of shown electronic console is included in front, electronic console surface and coextensive narrow air chamber with it.Shown in display also be equipped with optional air curtain device 114.Air curtain device 114 will be discussed in more detail below.Alternatively, display can have radiation shield 119, to reduce sun reflection on display surface.In addition, in outdoor environment, shell 70 is preferably the color of reflection daylight.
As shown in Figure 2, the exemplary embodiment of electronic console 10 comprises the separation gas cooling chamber 20 that is included in display casing 70.The first transparent air chamber is formed by spacer 100 and transparent front plate 90.The second transparent header board 130 can be laminated on header board 90 to help to prevent that header board 90 from breaking and protecting the inside of display.Cooling chamber 20 surrounds display group 80 and relevant backlight assembly 140.
With reference to figure 3, the embodiment of separation gas cooling chamber 20 can comprise the closed-loop path with the first air chamber 30 and second air chamber 40.The first air chamber comprises transparent panel 90.The second air chamber comprises cooling air supplying system 45.Term " separation gas " refers to that gas in separation gas cooling chamber 20 and the extraneous air in display casing isolate in fact.Be positioned at the front on electronic console surface 85 due to the first air chamber 30, thus gas should not contain in fact may the negative effect display image dust or other dirt.Optional filtrator (not shown) can be used for helping prevent dirt and dust to enter the first air chamber 30.
Separation gas can be almost any transparent gas, for example normal air, nitrogen, helium or any other transparent gas.Gas is preferred colourless not affect picture quality.In addition, separation gas cooling chamber 20 must not be sealed in extraneous air.Gas barrier in this chamber is namely enough to the degree that dust and dirt can not enter in fact the first air chamber.
In closed-loop path structure shown in Figure 3, the first air chamber 30 is communicated with the second air chamber 40 gases.Cooling chamber fan 50 can be provided in cooling air supplying system 45 and be used for around separation gas cooling chamber 20 propelling gass.The first air chamber 30 comprises at least one front glass 90 that is arranged on 85 fronts, electronic console surface.
With reference to figure 4, header board 90 is fixed on the front on electronic console surface 85 by distance piece 100.Distance piece 100 is formed on the degree of depth of surperficial 85 slypes that pass through previously of electronic console.Distance piece 100 can be stand-alone assembly or can with the device some other assembly one (as with header board 90 one).Electronic console surface 85, distance piece 100 and transparent front plate 90 form the first air chamber 30.Air chamber 30 is communicated with plenum system 45 gases by entrance opening 110 and exit opening 120.
As shown in Figure 3, the rear surface of the first air chamber 30 preferably includes the electronic console surface 85 of display group 80.Along with the separation gas in the first air chamber 30 through display, its contact electronic console surface 85.Make refrigerating gas directly contact electronic console surface 85 and strengthen convective heat transfer away from electronic console surface 85.In the exemplary embodiment, electronic console surface 85 comprises the rear surface of the first air chamber 30.Therefore, term " electronic console surface " (not lying in the situation of this disclosed embodiment) refers to the front surface of typical electronic console.
In the exemplary embodiment, electronic console surface 85, header board 90 and optional the second header board 130 can be comprised of glass substrate.Yet display surface 85, transparent front plate 90 or optional the second transparent front plate 130 must not be all glass.Therefore, term " glass " can use with term " plate " interchangeably at this, but is not the requirement glass material.In addition, electronic console surface 85 must not comprise the rear surface wall of front air chamber 30.Can use other plate.Yet, by with the electronic console surperficial 85 rear surface walls as air chamber 30, can have less surface impact to pass the visible light that display is propagated.In addition, apparatus of the present invention are lower with gentlier reaching cost of manufacture.
Although illustrated embodiment is utilized electronic console surface 85, other assembly that some modification and/or coating (as antireflecting coating) can be added electronic console surface 85 or system to is to adapt to coolant gas or to improve the optical property of device.In the embodiment shown, electronic console surface 85 can be the front glass panel of liquid crystal display (LCD) heap.Yet almost any display surface all is fit to the various embodiments of cooling system of the present invention.Although do not require, preferably make cold gas physical efficiency in the first air chamber 30 directly contact electronic console surface 85.Like this, the convection heat transfer' heat-transfer by convection from the display assembly to the recyclegas will maximize.
Transparent and be positioned at the front on electronic console surface 85 with reference to the header board 90 of figure 4, the first air chambers 30.Shown in arrow represent that separation gas moves through the first air chamber 30.As shown in the figure, separation gas with horizontal direction through the first air chamber 30.Although cooling system 20 can be designed to level or vertical direction mobile gas, preferably with the horizontal direction propelling gas.Like this, if dust or dirt enter the first air chamber 30, the bottom that they will be tending towards falling air chamber 30 is outside the observable zone of display.System of the present invention is mobile air from left to right, or mobile air from right to left.After gas was through the first air chamber 30, it withdrawed from by exit opening 120.Exit opening 120 forms the entrance that is connected to back cooling air supplying system 45.
Fig. 5 shows the schematic diagram (in order to illustrate, being shown transparent form) of back cooling air supplying system.One or more fans 50 in plenum system can provide and make separation gas move through the needed power of separation gas cooling chamber.When the first air chamber 30 was designed to collect heat from the surface 85 of display, the second air chamber 40 was designed to remove heat from the gas extraction heat and from cooling chamber 20.The second air chamber 40 can have various profiles and feature to adapt to the inner structure in given electronic display applications.
If necessary, each electronic component 200 can be placed on the second air chamber 40 Anywhere.Electronic component 200 can include but not limited to: transformer, circuit board, processor, resistor, capacitor, battery, motor, power supply, lighting device, wiring and wire harness, and switch.These elements can be directly installed on locular wall be supported on bar or post 209 on.Therefore, the cooling air supplying system can be designed to not only to extract heats but also cooling these different electronic components 200 (in addition from the first air chamber 30, as described below, if the separation gas system is used for the heating display, these electronic components can help to heat separation gas).
With reference now to Fig. 6 and 7,, can increase various surface elements 150 to improve the heat dissipation of plenum system 45.These surface elements 150 provide larger surface area with radiations heat energy away from the gas in the second air chamber 40.These parts 150 can be positioned at lip-deep a plurality of positions of plenum system 45.
With reference now to Fig. 8 and 9,, one or more electrothermal modules 160 can be arranged at least one surface of plenum system 45 gas that comprises with further cooling the second air chamber 40.Electrothermal module 160 can independently use or mating surface parts 150 use.As alternative, if the separation gas system is used for heating display under cold environment, electrothermal module 160 can be used for heating the gas in plenum system.
Figure 10 shows the illustrative methods of eliminating the heat in the gas that back plenum system 45 comprises.Fan 60 can be positioned to air amount and blow this air across front and the rear surface of plenum system 45.Explanation again, fan 60 can suck Air Conditioning display casing 70 or can suck simply ambient air.In addition, in this structure, fan 60 also can force the heat generating components (as display group 80 and backlight assembly 140) of air by electronic console with the ability of the cooling whole display of further raising.It should be noted that this embodiment can be combined with limited convection current cooling means discussed in more detail below.Exhaust after heating can be withdrawed from by the one or more holes 179 that are positioned on display casing 70.
The separation gas heating system
As mentioned above, the separation gas system also can be used for the Heating Electron display.With reference to Figure 11 and 12, heating element 220 can be positioned at the second air chamber 40 and be used for heated air when gas passes through the second air chamber 40.These heating elements can be any in many common available heating elements or electrothermal module.In the time of many, therefore these elements produce heat when electric current flows through at that time simply for comprising high-resistance material.Heating element can be but be not limited to one of the following: nichrome wire or band, be deposited on screen-printed metal on metal (the being generally steel) plate of pottery isolation/ceramic trace, CalRod (be generally the nichrome wire fine rule circle in vitrified bond, be sealed in hard betal can), thermolamp, and the resistor ceramic of positive thermal coefficient (PTC).
As mentioned above, plenum system 45 can comprise the electric device 200 that electronic console is carried out Power supply and control.This electric device can be following any one: transformer, microprocessor, printed circuit board (PCB), power supply, resistor, capacitor, motor, wiring harness, and connector.The electrical connection of electric device 200 can be passed the wall of plenum system 45.Electric device 200 can be positioned at plenum system 45 Anywhere.Electric device 200 can be arranged on the back of plenum system or front surface and can be directly installed on maybe can suspend by erection column on the surface of plenum system and make gas to pass through around element.
In the display operation, separation gas cooling system continuously-running.Yet if necessary, temperature sensor (not shown) and switch (not shown) can be combined in electronic console.Therefore, thermostat can be used for detected temperatures and has reached the time of predetermined threshold and can use selectively the separation gas system when the temperature in display reaches predetermined value.Predetermined temperature threshold can be selected and system can be configured to heating, cooling or not only heated but also cooling display advantageously display is remained in acceptable temperature range.
Linear polariser with optional heat insulation gap
Figure 13 is the sectional view of another exemplary embodiment of another heat control parts.Shown in scheme, header board 90 and the second header board 130 can be formed and can be stacked by glass.The first and second header boards 90 and 130 can be with the optical adhesive 201 of one deck index-matched and fixed to one another to form front glass unit 206.Display group 80 can comprise the Liquid crystal module 212 that is clipped between the front polarizer 216 and the rear polarizer 214.In other embodiments, display group 80 can be the assembly of any other type of the electronic console of any other type.Space between display group 80 and front glass unit 206 forms heat insulation gap 300.Heat insulation gap 300 is used for making front glass unit 206 and LCD heap 80 heat to separate.This heat is separated to be made heat rest on the front glass unit rather than allows daylight to be carried on the LCD heap.If system uses in conjunction with separation gas, heat insulation gap 300 can comprise the first air chamber 30.In other embodiments, in the situation that there is no the separation gas system, heat insulation gap 300 can be used simply as the heat insulation layer that isolation surrounding air and daylight load.
The second header board can have first surface 202 and second surface 208.First surface 202 can be exposed to element, and second surface 208 can be installed to by the optical adhesive 201 of index-matched on the first header board 90.The first header board 90 can have the 209 and the 4th surface 204, the 3rd surface.The 3rd surface 209 can be installed to by the optical adhesive 201 of index-matched on the second header board 130, and the 4th surface can be directly adjacent with heat insulation gap 300.In certain embodiments, for the daylight that reduces display group 80 loads and improves observable picture quality, antireflecting coating can be applied to first surface 202 and the 4th surface 204.In other embodiments, antireflecting coating only can be applied at least one surface in the first, second, third or the 4th surface 202,208,209 and 204.
Figure 14 is the sectional view of another exemplary embodiment of front glass unit 206.Shown in scheme, front glass unit 206 comprises optical adhesive 201, linear polariser 400 and first header board 90 of the second header board 130, one deck index-matched.Linear polariser 400 can be respectively with the first, second, third or the 4th surface 202,208,209 and 204 at least one surface conjunction.Explanation again, antireflecting coating can be applied at least one surface in the first, second, third or the 4th surface 202,208,209 and 204.Linear polariser 400 can be aimed at the front polarizer 209 that LCD piles in 85.206 comprise that linear polariser 400 further reduces daylight and is carried on display group 80 in the front glass unit.The minimizing that daylight loads can reduce the internal temperature of electronic console greatly.Linear polariser 400 also can cause the mirror-reflection of front glass unit 206 and display group 80 to reduce.As mentioned above, if use in conjunction with the separation gas system, heat insulation gap 300 can comprise the first air chamber 30.In other embodiments, in the situation that there is no the separation gas system, heat insulation gap 300 can be used simply as the heat insulation layer that isolation surrounding air and daylight load.Should again note, display group 80 can be the LCD heap, but it can be also the electronic console of any other type.
Not it shall yet further be noted that and must need the second header board 130.Embodiment can only use the first header board 90, and linear polariser is attached to back or the front surface of header board 90 simultaneously.Antireflecting coating also can be attached to front or the rear surface of header board 90.There is no the second header board 130 if only use header board 90, can carry out tempering to have other intensity to header board 90.
Limited convection current
The electronic console of some types needs backlight assembly to produce image on observable screen.LCD is the display that needs backlight assembly of a type.The display of other type such as plasma scope and OLED do not need backlight assembly, because they oneself produce light.Yet the display of these types still produces amount of heat.Therefore, in the following description, limited convection system is described in connection with backlight assembly, but it should be noted that these embodiment can use the display of other type to implement.Therefore, when backlight or backlight assembly were discussed, these assemblies can be also the rear surfaces of other elevating display, and limited convection system helps more effectively cooling these alternative display.It shall yet further be noted that the inevitable drafting in proportion of Figure 15 A-15B and Figure 17 A-17C.For the purpose of illustration, may exaggerate relation between element.
Figure 15 A shows backlight 140 sectional view with limited convection-plate 300, and the space between two parts forms close clearance 305.The size in gap can change according to following several factors, comprising: the type of the size of display, its condition of work, backlight assembly and rear surface material thereof, and quantity and be applied to the power of each limited convection fan.Some exemplary embodiments can be used the approximately spacing of 0.25-3.5 inch.Other embodiment can use larger a little gap.Find, forcing air to pass this gap 305 increases cooling backlight 140 ability.One or more limited convection fans 310 can be used for attracting air to pass gap 305.Figure 15 B shows the sectional view of another embodiment of limited convection system, and wherein one or more limited convection fans 310 promote air and pass gap 305.
Figure 16 shows the vertical view of separation gas as above system.Show the section line 17-17 that passes the separation gas system.
Figure 17 A-17C shows the sectional view in the 17-17 cross section shown in Figure 16.At first with reference to figure 17A, towards the display front be the first air chamber 30, this air chamber is near electronic console 80.The front of the first air chamber 30 is header boards 90.Towards the back of display, 140 next-door neighbour's the second air chambers 40 backlight are placed.In this structure, the outer wall of the second air chamber 40 can be used as limited convection-plate.This embodiment does not use limited convection fan, forces lip-deep fan 60 at the second air chamber 40 but use from display casing outside air amount and with it.As mentioned above, this air may simply be ambient air or this air can be from the regulon (not shown).For help backlight 140 and cooling chamber 40 between Air Flow, can use guiding device 320.
With reference now to Figure 17 B,, cooling chamber 40 comprises guide member 41, and it uses to help Air Flow between backlight and cooling chamber in conjunction with guiding device 320.Figure 17 C shows another embodiment, wherein uses simultaneously external fan 60 and limited convection fan 310.This embodiment also can use the guiding device of version shown in Figure 17 A and 17B.
In the display operation, external fan 60 and limited convection fan 310 continuously-runnings.Yet if necessary, temperature sensor (not shown) and switch (not shown) can be combined in electronic console.This effective thermostat can be used for the time that detected temperatures has reached predetermined threshold.In this case, when reaching predetermined value, the temperature in display can use selectively each fan.Predetermined threshold can be selected and system can be configured to have the thermostat (not shown) advantageously display is remained in acceptable temperature range.This is with the useful life longevity of conserve energy cost and device.
Gas curtain
Except each heat control parts as above, also can use air curtain device.Air curtain device can use separately, or uses in conjunction with any parts in other heat control parts as above.
Figure 18 shows electronic console 10, has shell 70 and header board 90.The air register 114 that is used for gas curtain can be seen the broken string of mapping.Also can see section line 19-19 in the figure.
Figure 19 shows along the sectional view of the line 19-19 shown in Figure 18.The figure shows the air circulation of passing through shell 70 when fan 60 starts.As mentioned above, fan 60 passes through entrance 51 with air intake shell 70.This air can be that ambient air can be maybe Air Conditioning.Mobile the showing of the air that sucks made arrow 111.In case in display casing 70, air can upwards flow along flow arrow 121.This air can use together with any above mentioned heat control parts.For example, this air can be used for the separation gas in cooling the second air chamber (plenum system), or can use together with limited convection system as above.
Be the purpose of explanation, cavity 61 is omitted and only shown to the details of the internal part of display from this figure.It should be noted that gas curtain can combine enforcement with the electronic console of any type and above-mentioned heat control parts any.Each internal part (not shown) can be placed in cavity 61 with air guide baffle plate 114.The air that sucks can continue to pass through cavity 61 until reach baffle plate 114 along arrow 121, and baffle plate 114 can be against external display surface guiding air.This outside surface can be the first header board 90, any other header board of perhaps describing in detail above (as the second header board 130).
Therefore, gas curtain can be used as the exhaust apparatus for the internal part of cooling display.As alternative, from the cold air of gas curtain can be used for further cooling display, loaded by a large amount of daylight or from the outer front surface of the heat transfer of hot-air on every side.
Liquid-cooling system
Figure 20 is the indicative icon of another heat control parts.As recognizing from figure, cooling system 22 comprises a plurality of parts of fluid connection.Preferably, this can be by realizing with a series of pipelines or pipe (conceptually being shown dotted line) link.The parts of cooling system 22 comprise hold-up tank 37, pump 47 and the cooling chamber 4 of fluid connection.Preferably, this system also comprises filtrator 83 and the heating radiator 72 of same fluid connection.Alternatively, this system also can comprise fan unit 94.Yet, optional fan unit preferably not with other parts fluid connection.
Hold-up tank 37 preserve the coolant liquids of main amount and have surface area with heat conduction when being included in tank 37 at liquid away from liquid.Tank has at least two openings, outlet 13 and return port 14.Alternatively, hold-up tank comprises ventilating opening 66.Pump 47 makes coolant liquid move through system 22.As those skilled in the art will appreciate that, pump 47 can be positioned at a plurality of positions along the coolant liquid path, has suitable result.Yet, minimum for the curvature that makes plate 44 and 128, preferably pump 47 is positioned at cooling chamber 4 and makes pump in fact move liquid coolant to top from the bottom suction of cooling chamber 4 afterwards.If pump is located like this, use pump to produce low pressure zone at the top of cooling chamber 4.Like this, liquid is by flowing through cooling chamber 4 shown in arrow.Due to some coolant liquids " smooth ", pump 47 is preferably positive-dispacement pump.
Pass flowing of cooling chamber for regulating coolant liquid, the by-pass line with valve 634 can be provided.By-pass line realizes that the bypass of coolant liquid transmits to walk around cooling chamber 4.Valve 634 is suitable for helping to control the amount that turns to the coolant liquid that passes by-pass line.By-pass line and valve 634 can turn to the predetermined portions of coolant liquid and away from the stream of Directed cooling chamber 4, thereby help to control the flow by cooling chamber itself.Like this, can regulate flow by cooling chamber.
As skilled in the art will be aware of, other method and apparatus also can be used for regulating the liquid stream by cooling chamber.For example, can optimize size and the pump speed of pump 47 for given application.As alternative, also can use speed-variable pump.Preferably, speed-variable pump can with at least one pressure transducer (not shown) electric connection.Preferably, a pressure transducer can be placed on the upstream of cooling chamber 4, and another pressure transducer can be placed on the downstream of cooling chamber 4.The pressure information that at least one pressure transducer provides can be used for arranging the travelling speed of speed-variable pump.Like this, can regulate flow by cooling chamber 4 with pressure suitable in holding device.Keep suitable pressure for preventing the display glass distortion or breaking very important in cooling chamber 4.
Can increase optional filtrator 83 to remove the dirt in liquid.Preferably, can comprise that also heating radiator 72 and fan unit 94 are to provide better thermal stability.Alternatively, can provide the plug (not shown) to help to fill and empty the process of coolant liquid.
In when operation, liquid withdraws from hold-up tank 37 from the delivery outlet 13 that is positioned at tank 37 belows.In the way of going to cooling chamber 4, liquid is by optional filtrator 83.Then, liquid inherent filtration device 83 enters cooling chamber 4 by the entrance 98 of manifold 59.Direction shown in liquid coolant is pressed (dotted arrow) moves up by the liquid chamber of cooling chamber 4.Coolant liquid withdraws from cooling chamber 4 by the outlet 99 of upper manifold 60.Preferably, next liquid received by optional heating radiator 72.When moving through optional heating radiator 72, optional fan unit 94 can force air to make heat away from coolant liquid by heating radiator 72 to help to conduct heat.Pump 47 after it can be positioned at heating radiator 72, can attract liquid towards hold-up tank.Liquid is received in hold-up tank 37 by return port 14.Preferably, return port 14 can be positioned at relatively away from the position of outlet 13 so that the liquid that returns maximum by exporting 13 cooling chances before withdrawing from hold-up tank 37.
If necessary, fan unit just can be positioned at the place, bottom at the shell 75 of cooling chamber 4 back of display 15.Fan unit can provide the lamina air flow by the inside of shell 75.Preferably, air stream will guide across at least one outer surface of hold-up tank 37.As mentioned above, exhaust stream finally can reboot on cooling chamber surface 44 by means of optional gas curtain system 114.
If necessary, temperature sensor (not shown) and switch (not shown) can be combined in electronic console.Temperature sensor can be used for the time that detected temperatures has reached predetermined threshold.In this case, when reaching predetermined value, the temperature in display can use selectively pump.Predetermined threshold can be selected and system can be configured to have the thermostat (not shown) advantageously display is remained on relative stationary temperature, perhaps at least within acceptable temperature range.As alternative, for needing avoiding thermostat, pump 47 continuously-runnings when electronic console moves.
Claims (9)
1. be used for having the electronic console of display surface and be positioned at the back of electronic console and have the thermal control system of the backlight assembly of rear surface, this system comprises:
Be positioned at the first air chamber of the front on electronic console surface, described the first air chamber has entrance and exit;
Be communicated with and be positioned at the second air chamber of the back on electronic console surface with the entrance and exit gas of described the first air chamber, described the second air chamber has inside surface and outside surface;
One or more chambers fan in the second air chamber is used for around the first and second air chamber propelling gass; And
Be suitable on the outside surface of the second air chamber and force one or more external fans of surrounding air along the rear surface of backlight assembly.
2. according to claim 1 system also comprises:
Be used for the operation electronic console and be included in the interior one or more electronic components of described the second air chamber.
3. according to claim 1 system also comprises:
One or more heating elements in the second air chamber.
4. according to claim 1-3 arbitrary described systems also comprise:
Be placed on the linear polariser of the front of described display surface.
5. according to claim 1-3 arbitrary described systems also comprise:
Be close to the limited convection-plate of the rear surface of described backlight assembly, the space between the rear surface of convection-plate and backlight assembly forms the gap; And
Be suitable for aspirating air by the one or more limited convection fan in described gap.
6. be used for heat control and have the electronic console of display surface and be positioned at the back of electronic console and have the method for the backlight assembly of rear surface, comprise step:
The separation gas system that comprises the first air chamber and the second air chamber is provided, the first air chamber and electronic console Surface Contact, and the second air chamber is communicated with described the first air chamber gas;
Separation gas is forced into the first air chamber;
Heat is passed to separation gas from the electronic console surface;
Separation gas is imported the second air chamber;
If need to be cooling, use surface and the backlight assembly of cooling the second air chamber of surrounding air; And
Separation gas is introduced the first air chamber again.
7. according to claim 6 method, wherein cooling step comprises the steps:
Heat is passed to the wall of the second air chamber from separation gas;
Surrounding air is forced on the wall of the second air chamber;
The wall of heat from the second air chamber passed to surrounding air; And
Surrounding air is forced in rear surface along backlight assembly.
8. according to claim 6 method also comprises step:
If need heating, heat the separation gas in the second air chamber.
9. according to claim 6-8 arbitrary described methods also comprise step:
Provide limited convection-plate in the back of backlight assembly, the zone between limited convection-plate and backlight assembly forms the gap; And
Force air by the rear surface of described gap with cooling backlight assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/941,728 US8004648B2 (en) | 2007-11-16 | 2007-11-16 | Air curtain for display |
| US11/941,728 | 2007-11-16 | ||
| US3305808P | 2008-03-03 | 2008-03-03 | |
| US3306408P | 2008-03-03 | 2008-03-03 | |
| US61/033,064 | 2008-03-03 | ||
| US61/033,058 | 2008-03-03 | ||
| US3945408P | 2008-03-26 | 2008-03-26 | |
| US61/039,454 | 2008-03-26 | ||
| US5371308P | 2008-05-16 | 2008-05-16 | |
| US61/053,713 | 2008-05-16 | ||
| US5759908P | 2008-05-30 | 2008-05-30 | |
| US61/057,599 | 2008-05-30 | ||
| US7612608P | 2008-06-26 | 2008-06-26 | |
| US61/076,126 | 2008-06-26 | ||
| US12/191,834 | 2008-08-14 | ||
| US12/191,834 US8208115B2 (en) | 2007-11-16 | 2008-08-14 | Fluid cooled display |
| US12/234,360 US20090126914A1 (en) | 2007-11-16 | 2008-09-19 | Isolated Gas Cooling System for Cooling Electrical Components of an Electronic Display |
| US12/234,307 | 2008-09-19 | ||
| US12/234,307 US8767165B2 (en) | 2007-11-16 | 2008-09-19 | Isolated gas cooling system for an electronic display |
| US12/234,360 | 2008-09-19 | ||
| US12/235,200 | 2008-09-22 | ||
| US12/237,365 | 2008-09-24 | ||
| PCT/US2008/083792 WO2009065125A2 (en) | 2007-11-16 | 2008-11-17 | System and method for thermally controlling an electronic display |
| US61/115,333 | 2008-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101971081A CN101971081A (en) | 2011-02-09 |
| CN101971081B true CN101971081B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880124923.0A Expired - Fee Related CN101971081B (en) | 2007-11-16 | 2008-11-17 | System and method for thermally controlling an electronic display |
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| CN (1) | CN101971081B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882068A (en) * | 2015-06-04 | 2015-09-02 | 肖叶 | Intelligent wireless cementing machine display control screen |
| CN108347857B (en) * | 2017-01-24 | 2019-09-06 | 晶达光电股份有限公司 | Double-side display device |
| CN108968533A (en) * | 2018-08-10 | 2018-12-11 | 昆山弘锦威电子有限公司 | A kind of liquid crystal display semi-finished product storage facility |
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| US5991153A (en) * | 1997-10-31 | 1999-11-23 | Lacerta Enterprises, Inc. | Heat transfer system and method for electronic displays |
| WO2005079129A1 (en) * | 2004-02-16 | 2005-08-25 | Inssimainos Oy | Procedure and apparatus for controlling the temperature of a display surface |
| CN1820226A (en) * | 2004-06-30 | 2006-08-16 | 株式会社日立制作所 | Liquid crystal projector, its liquid crystal panel, and its liquid cooler |
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| CN101971081A (en) | 2011-02-09 |
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