DE102011057097A1 - Ceiling lighting arrangement - Google Patents

Abstract

The invention relates to a ceiling lighting arrangement. This comprises at least one channel (01) and at least one surface lighting element, which is mounted on at least one side of the channel (01) and at least one diffuser surface (02) has. The area lighting element preferably comprises a light source surface (26) with numerous light emitter diodes (27), which is covered in the direction of the space to be illuminated by a transparent diffuser surface (02). The channel (01) preferably comprises a U-shaped housing with an open bottom to be illuminated space, wherein in the housing a plurality of juxtaposed light emitter diodes (07) on a support (06) are arranged.

Description

The present invention relates to a ceiling lighting arrangement, which is particularly suitable for lighting residential, commercial and exhibition spaces.

For lighting tasks a wide variety of light sources are available. In order to achieve optimum lighting conditions, considerable efforts are sometimes made, with the type of light source, its positioning in the room and the selected Abstrahlcharakter for the lighting conditions at a certain position within a room to be illuminated are of particular importance. Difficulties arise when the lighting conditions are to be adapted to changing usage situations of a room. Special requirements also arise when one or even several screens are operated in a room to be illuminated, whose image representation can be affected by occurring on the screen surface light reflections that originate from external light sources.

From the DE 10 2010 018 034 A1 For example, a surface radiator is known whose goal is to make the emission of a large-area light source as homogeneous as possible, light emitting diodes being used as light sources which themselves have a comparatively small radiation exit area. The surface light guide proposed for this purpose has a light-guiding region with a coating applied thereto, which purposefully reduces an excessive proportion of radiation at the radiation exit surface. However, this reduces the efficiency of the light source.

In the DE 20 2011 003 828 U1 a luminaire for a ceiling lighting of a tunnel is described. By using lenses in front of the actual light-emitting element, which can be configured as an LED, a targeted radiation of the light is to be ensured. Between the individual cones of adjacent lighting elements nevertheless arise areas with different levels of illumination, so that this arrangement is not very suitable for residential or commercial lighting.

Efforts have also recently been made to combine different functional elements to be provided on storey ceilings. For example, it is known to incorporate both air conditioning elements and fire protection elements in suspended floor slabs.

From the DE 197 38 172 C1 a device for controlling the temperature of buildings is known, in which an integrated into the floor ceiling channel system is provided, which is flowed through by a temperature-controlled fluid. It is also proposed to lay cables or conduits for ceiling lighting in addition in this channel system.

The DE 20 2011 000 426 U1 shows, inter alia, a light channel arrangement with a ceiling element and a recess mounted therein having a U-shaped cross section, in which a light channel is used with a U-shaped housing. The light channel is in this case with its light exit surface substantially in a plane with the surface of the ceiling element and the housing of the light channel can simultaneously perform supporting functions for individual ceiling panels. In this way, a light band can be arranged in the ceiling, which is visually difficult to distinguish from the adjacent ceiling panels. Depending on the used reflector in the light channel, a different width radiation angle can be adjusted. However, it always remains the case that the actual light exit surface is limited to the narrow region of the light channel, so that specific lighting situations can not be adequately fulfilled.

It is an object of the present invention, starting from this prior art, to provide a ceiling lighting arrangement which, while retaining the advantages of known light channels, additionally opens up the possibility of large-area lighting of a room. The aim is also to meet design requirements and in particular to obtain flat, large-scale ceiling areas that are not interrupted by numerous individual lighting fixtures. Another object of the present invention is to design the ceiling lighting arrangement so that it can fulfill further functions, in particular can be used as part of an air conditioning device, so that additional ventilation ducts on the floor ceiling are no longer needed.

These and other objects are achieved by a ceiling lighting arrangement according to the invention, which is designed according to the features of the appended claim 1.

The ceiling lighting arrangement according to the invention comprises at least one channel and at least one area lighting element, which is attached to at least one side of the channel and has a diffuser surface. A major advantage of this ceiling lighting arrangement is that in the channel conventional lighting means can be provided and at the same time adjacent to the channel, a surface lighting element is available, which allows a large-scale, uniform illumination of the room. On the other hand, the illumination means to be arranged in the channel can specifically supply smaller areas with a larger amount of light, in order to meet special lighting needs there.

According to a particularly preferred embodiment, the surface lighting element of the ceiling lighting arrangement further has a light source surface with numerous light-emitter diodes (LED), which is covered in the direction of the space to be illuminated by the diffuser surface, which in any case must be interpreted in a transparent manner to that of to transmit light originating from the light source surface. Alternatively or cumulatively, however, the diffuser surface can also be illuminated by other light sources and act as a light distributor.

The channel of the ceiling lighting arrangement also offers the possibility to arrange further functional elements and / or to lay supply cables, without these being visible on the ceiling. Finally, it is particularly advantageous if the channel simultaneously assumes supporting functions not only for the adjacent area lighting element but also for other ceiling elements.

In a particularly preferred embodiment, a plurality of ceiling lighting arrangements according to the invention are arranged next to one another or in a grid shape on a floor ceiling, so that the channels form a supporting structure. The individual channels can be attached in a conventional manner to the floor ceiling, for example via hangers or preferably length-adjustable connecting bolts. Between the adjacent channels then the surface lighting elements are clamped so that they are surrounded on all sides by corresponding channels. Optically, this results in a nearly flat floor ceiling, for example in cassette form. The area lighting elements can be easily adapted in their dimensions to the distances between the channels, so that any floor surfaces can be completely covered by the ceiling lighting arrangement according to the invention.

According to a preferred embodiment are in the channel of the ceiling lighting arrangement one or preferably two parallel to each other running carrier with a reflector portion in which numerous juxtaposed LED are positioned. The reflector portion concentrates the light generated by the plurality of LEDs and ejects a light wall at the bottom of the channel, the radiation angle is preferably in the range between 5 ° to 20 °. The light band produced in this way can extend along the entire channel or preferably only in individual sections of the channel.

In a modified embodiment, an air guide section is formed in the channel, which extends along the longitudinal axis of the channel and can be connected to the loading and / or venting means. The channel of the ceiling lighting arrangement is in this way part of an air conditioning device, with targeted air over the air duct section of the channel out and introduced into the illuminated space and / or exhaust air can be sucked in other areas. The air guide portion is preferably formed in the upper region of the channel, for which an intermediate plane is drawn into the channel, which is formed by an intermediate plate mounted in the channel. Throughflow openings are preferably provided in the intermediate plate which allow air to pass from the air guide section in the direction of the open underside of the channel. The flow openings can be formed at predetermined intervals and in each case with an offset from one another along the intermediate plate, whereby the flow conditions in the air guide section and the amount of air emerging from the channel can be influenced.

It is particularly advantageous if the diffuser surface consists of a flexible, cloth or sheet-like material whose side edge is fixed in a tensioning device, which in turn is attached to the channel. By operating the clamping device, the diffuser surface between adjacent channels can be shortened so far that sagging of the cloth or film-like material is minimized, so that the impression of a rigid floor surface area arises. Alternatively, the diffuser surface can be selectively enlarged to produce visible sagging areas between the channels, if desired for design reasons. Of course, the material of the diffuser surface can be colored, although a certain color on the floor ceiling is desired even in the non-illuminated state. In order to generate different lighting moods, colored LEDs can be provided in the light source surface, which is located above the diffuser surface. For this purpose, all principle known driving options of suitable for lighting LED in question.

Further advantages, details and developments of the present invention will become apparent from the description of preferred embodiments, with reference to the drawings. Show it:

1 a cross-sectional view of a portion of a first embodiment of a ceiling lighting arrangement according to the invention;

2 a cross-sectional view of a portion of a second embodiment of the ceiling lighting arrangement;

3 a simplified detail of the ceiling lighting arrangement with a clamping element;

4 a simplified perspective view of a modified embodiment of the ceiling lighting arrangement;

5 a detailed view from above of an intermediate plate with flow openings;

6 a schematic representation of a forming in the channel air flow;

7 FIG. 3 is a cross-sectional view of a portion of another embodiment of the modified channel profiling ceiling lighting assembly; FIG.

8th a cross-sectional view of a further modified embodiment of the ceiling lighting arrangement with a linear illuminant;

9 FIG. 4: a top perspective view of the embodiment according to FIG 8th ,

In 1 a section of a ceiling lighting arrangement according to the invention is shown in a cross-sectional view. An essential part of the ceiling lighting arrangement is a channel 01 which is preferably formed in the form of a U-shaped housing which is open at the bottom. It should be mentioned at this point that the ceiling lighting arrangement is in principle also suitable for attachment to a building wall or the like in a vertical position. The following description and the designation as a ceiling lighting arrangement should not limit the scope of protection in this respect. The channel 01 may advantageously consist of sheet metal or extruded light metal. Such channels are known in principle both from ceiling constructions as well as from specific lighting applications, so that the following description can be limited to the important features here.

At the in 1 illustrated embodiment extends on both sides adjacent to the channel 01 one diffuser surface each 02 which runs essentially parallel to the floor ceiling. The diffuser surface 02 preferably consists of a transparent and flexible material with cloth or foil-like appearance. The diffuser surface 02 serves a large-scale and uniform illumination of the room. The diffuser surface 02 can interact with different light sources. For example, the arrangement of any light source comes above the diffuser surface 02 which are formed by fluorescent tubes or particularly preferably by light-emitting diodes (LED). Likewise, an illumination of the diffuser surface 02 possible from the bottom, for example, by radiators built into the ground, whose light beam from the diffuser surface 02 is reflected.

The to the channel 01 adjoining side edge of the diffuser surface 02 can be attached to this in various ways. Conceivable is a screwing the side edge to the open channel ends or the side walls, if the diffuser surface 02 made of a stable material. As far as the diffuser surface 02 is made of a flexible material, is preferably a holding bar on the side edge 03 attached, between the inner wall of the canal 01 and a clamp 04 is trapped. The clamp block 04 can be, for example, in a channel 01 provided groove 05 push in to the holding bar 03 to lock. Other mounting options of the diffuser surface 02 on the canal 01 can be chosen by the specialist.

Within the channel 01 are located at the in 1 shown embodiment two in the longitudinal direction of the channel 01 running beams 06 , on each of which a multiplicity of lined up LEDs 07 are attached. The carrier 06 preferably also serves to dissipate the heat loss during operation of the LED 07 arises. In addition, the carrier includes 06 a reflector 08 which has a bundled light output at the bottom of the channel 01 causes. To protect the LED, the reflector 08 at the light exit surface through a transparent cover plate 09 to be introverted. Both carriers 06 may be connected to an assembly, preferably via an intermediate plate 11 , which are integral with the backs of the two carriers 06 can be connected. This carrier assembly is for example by means of screws 12 on profile elements of the channel 01 attached. It may be advantageous if the screws 12 at the same time the fixation of the clamping blocks 04 inside the groove 05 serve. The beam angle of the reflectors 08 is preferably kept small to cast a narrow band of light for the preferred illumination of selected areas, such as a work surface on a desk.

The mentioned intermediate plate 11 separates the upper part of the channel 01 from the lower region, so that in a preferred embodiment, the upper region as an air guide section 13 is available. In the upper part of the canal 01 can also supply cables 14 be relocated and circuit elements 16 for the operation of the LED 07 be positioned.

A targeted air flow in the air duct section 13 initially serves to dissipate the resulting heat loss. In addition, can in the intermediate plate 11 several flow openings 17 be located so that an exchange of air with the lower portion of the channel and the adjoining room to be illuminated is possible. For this purpose remains between the parallel girders 06 an open space, but for optical reasons, for example, may be covered by a perforated plate.

Between the carrier 06 with its reflector 08 and the free end of the side wall of the channel 01 remains a small gap in the form of a shadow gap, through which the flexible diffuser surface 02 passed through.

At the in 1 shown embodiment are on the outsides of the side walls of the channel 01 mounting surfaces 18 arranged. At the mounting surfaces 18 can ceiling tiles 19 be attached, take over the different functions. Depending on the type of attachment of the channel 01 on the floor ceiling, the channel can take on self-supporting functions.

In 2 is again shown in cross section a portion of a second embodiment of the ceiling lighting arrangement according to the invention. To the downside free ends of the channel 01 is in this case on both sides of the diffuser surface 02 connected. The open side of the canal 01 takes in this case a lamp assembly 21 on, the one or more central bulbs 22 include. The radiator assembly 21 is with sprung side walls 23 in complementary profile elements in the channel 01 engaged. Different mounting options are obvious to a person skilled in the art. At the bottom of the lamp assembly 21 are numerous flow openings 17 arranged to allow air exchange between the interior of the canal 01 and to allow the environment.

In 2 it can be seen that on the channel 01 For example, on one of its side walls an air supply connection 24 is arranged to supply or remove air, so as to support the air conditioning of the illuminated space.

At the in 2 shown embodiment are in the lower third of the side walls of the channel 01 light source surfaces on both sides 26 attached, which are part of the area lighting element, which further the diffuser surface 02 includes. The light source surface is net-like and carries numerous LEDs 27 connected via supply lines with circuit elements 16 which are in turn within the channel 01 can be arranged. The net-like light source surface 26 preferably extends between adjacent channels 01 and is in its entirety from the diffuser surface 02 covered, so that only the uniformly emitting light diffuser surface of the illuminated room 02 as well as arranged in the same plane underside of the lamp assembly 21 stay visible.

In 3 a detail of the ceiling lighting arrangement is shown in a sectional view. Around the diffuser surface 02 It is advantageous to stretch between adjacent channels as tightly as possible, when it is on the side edge of the diffuser surface 02 attached holding bar 03 with a clamping element 28 interacts, which is on the inside of the channel 01 is appropriate. The lateral end of the diffuser surface 02 is used for clamping over the free end of the side wall of the channel 01 guided and from the clamping element 28 in the channel 01 drawn. This is the clamping element 28 and with him the holding staff 03 variable in height, so that the further pulling in of the end region of the diffuser surface 02 the free area outside the canal 01 shortened.

Furthermore, the shows 3 a preferred way to attach the light source surface 26 on the canal 01 , For this purpose, wedge-shaped edge pieces are in corresponding recesses 29 attached, which may also be suitable for tensioning the light source surface. It is advantageous if above the light source surface 26 a protective film 31 is curious, which can also act as a vapor barrier. On the outsides of the side walls of the canal 01 are additional cable guides 30 appropriate.

A modified embodiment of the ceiling lighting arrangement is in 4 shown in a perspective view. The reticular structure of the light source surface is clearly recognizable 26 as well as the visually closed, transparent design of the diffuser surface 02 , Similarly, it is clearly visible that at the bottom of the channel 01 two parallel light bands arise over which the cover plates 09 which the reflectors 08 close, emitted bundled light.

Likewise, in 4 be recognized that the intermediate plate 11 several flow openings 17 having an air exchange between the air guide section 13 within the channel 01 and allow the environment. In addition to the previously described embodiments is on the intermediate plate 11 a water sprinkler 32 attached in the event of a fire extinguishing water. The water sprinkler 32 is supplied by water pipes inside the canal 01 can be easily moved.

5 shows in a simplified perspective view from above the intermediate plate 11 of the canal 01 and the flow openings provided therein 17 , In order to achieve optimal flow conditions, the flow openings 17 spaced from each other and arranged with a lateral offset. In addition, they have an elliptical opening cross-section.

6 shows in a schematic side view the formation of an air flow when air in the air guide section 13 of the canal 01 is blown, so that these the intermediate plate 11 sweeps. It comes to a wave-like air flow, so that from the bottom of the channel 01 exiting air not flat but emerges in waveform. This improves the climatic conditions in the ventilated room, as in particular drafts are avoided.

7 shows a modified design of the ceiling lighting arrangement in cross section. The channel 01 serves only as a support for the diffuser surface 02 and the light source surface 26 , The channel therefore has a changed internal profiling, since in its interior no bulbs are mounted. This type of construction is suitable, for example, for use as edge termination if the channel is directly adjacent to a building wall and there is no need for additional line-shaped or punctual lighting. Also in this design is the clamping element 28 provided, which with the holding bar 03 interacts with the diffuser surface 02 to stretch over the free end of the canal. The light source surface 26 will turn over the edge piece 29 attached to the canal. After tensioning the diffuser surface 02 can be the bottom of the channel 01 through a cover plate 33 be closed.

In the 8th shown embodiment is characterized in that at the downwardly open side of the channel 01 several special linear illuminants 34 are attached, which are used as prefabricated units in the channel. The linear illuminants are arranged so that the light exit surface approximately centrally in the open bottom of the channel 01 lies. In this case, individual linear illuminants may be attached to the opposite inner sides of the channel, as shown in the 8th is provided, and in the longitudinal direction of the channel spaced from each other or adjacent to each other.

9 shows the embodiment according to 8th in a perspective view from above. It can be seen that in the longitudinal direction of the channel 01 baffles 36 extend, which serve the targeted air flow and thus the formation of certain currents for air conditioning of the room.

LIST OF REFERENCE NUMBERS

01

channel

02

diffuser surface

03

retaining bar

04

chock

05

groove

06

carrier

07

LED

08

reflector

09

cover plate

10

11

intermediate plate

12

screw

13

Air guide section

14

electric wire

16

circuit elements

17

Flow openings

18

mounting surfaces

19

cover plates

21

radiator assembly

22

Central light source

23

Springing sidewalls

24

Air supply connection

26

Light source area

27

LED

28

clamping element

29

margin copy

30

cable management

31

protector

32

Sprinkler

33

cover

34

Linear lamps

36

Air baffle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010018034 A1 [0003]
• DE 202011003828 U1 [0004]
• DE 19738172 C1 [0006]
• DE 202011000426 U1 [0007]

Claims (10)

Ceiling lighting arrangement comprising: • at least one channel ( 01 ); At least one area lighting element, which on at least one side of the channel ( 01 ) and at least one diffuser surface ( 02 ) owns. Ceiling lighting arrangement according to claim 1, characterized in that the area lighting element further comprises a light source surface ( 26 ) with numerous light-emitting diodes ( 27 ), wherein the light source surface ( 26 ) towards the space to be illuminated from a transparent diffuser surface ( 02 ) is covered. Ceiling lighting arrangement according to claim 1 or 2, characterized in that the channel ( 01 ) comprises a U-shaped housing, with an open to the illuminated space underside, wherein in the U-shaped housing a plurality of juxtaposed light emitter diodes ( 07 ) on a support ( 06 ) are arranged. Ceiling lighting arrangement according to claim 3, characterized in that the support ( 06 ) a reflector ( 08 ), that of the light-emitter diodes ( 07 ) and a light from the bottom of the channel ( 01 ) emitted light band, with a radiation angle in the range of 5 ° to 20 °, preferably 12 ° to 18 °. Ceiling lighting arrangement according to one of claims 1 to 4, characterized in that the channel ( 01 ) along the longitudinal axis of the channel ( 01 ) extending air guide section ( 13 ), which can be connected to the loading and / or venting means. Ceiling lighting arrangement according to claim 5, characterized in that the air guide section ( 13 ) on three sides by sections of the inner wall of the channel ( 01 ) and on a fourth side by an elongated, parallel to the top of the channel ( 01 ) extending intermediate plate ( 11 ) is formed, the numerous flow openings ( 17 ) towards the open bottom of the channel ( 01 ) having. Ceiling lighting arrangement according to claim 6, characterized in that in the channel ( 01 ) two parallel supports ( 06 ) with juxtaposed light-emitter diodes ( 07 ) in the longitudinal direction, wherein between the two supports ( 06 ) leaves a free space, the air exchange with the above the carrier ( 06 ) extending air guide section ( 13 ). Ceiling lighting arrangement according to one of claims 1 to 7, characterized in that the diffuser surface ( 02 ) consists of a flexible, cloth or film-like material, the at least one side edge of which is 01 ) fixed clamping element ( 28 ) adjustable on the channel ( 01 ) is attached. Ceiling lighting arrangement according to one of claims 1 to 8, characterized in that the light source surface ( 26 ) has a grid or net-like structure, from the diffuser surface ( 02 ) and at least one side edge on an outer wall of the channel ( 01 ) is attached. Ceiling lighting arrangement according to one of claims 1 to 9, characterized in that in the channel ( 01 ) areas for the arrangement of electronic circuit units ( 16 ) and / or supply cables ( 14 ) and / or water sprinklers ( 32 ) are provided.

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