DE29906884U1 - Lighting device with a support base - Google Patents

Description

P22350

Lighting device with a support base

The invention relates to a lighting device with a supporting structure or support base which can be attached directly or indirectly to a ceiling or wall of a room.

One or more lights in a room not only serve the purpose of illuminating the room, but are also a design element of the room, whereby they help to shape the room both through their arrangement and shape and through the light they emit, and in particular through the type of light they exert an influence on the well-being of the people in the room. An essential requirement for room lighting is that the human eye is not dazzled when the room is sufficiently illuminated. A large number of anti-glare devices have already been developed in this regard, which are particularly effective when the viewer is looking upwards at a relatively shallow angle.

The risk of glare increases the stronger the light emitted by a lamp. In order to keep the light intensity of a lamp as low as possible while providing sufficient illumination of the room, several lamps are arranged with a correspondingly lower light intensity, whereby the risk of glare is reduced due to the lower light intensity of the lamps. However, when there are several lamps, the spaces between the lamps are perceived by the human eye as disturbing dark spots. To solve this problem, lamps have already been developed which illuminate the room directly and indirectly, but such lamps are relatively complex and expensive, and at the same time special requirements are placed on the ceiling or wall which supports the lamps. In order to avoid dark spots between several lamps, so-called light ceilings have also been proposed. Such a lighting device can, for example, be formed from a plurality of individual lamps or light bars, on the emitting side of which there is a continuous

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extending translucent cover element is arranged, e.g. a special milky-white film is stretched, which is connected to the supporting structure of the lighting device by connecting elements arranged on the edge of the lighting device. Such a lighting device can be arranged in the area of the entire room boundary surface (ceiling, wall) or only in the area of a part of it. If special lighting effects are desired, these can be achieved by having the lamps located behind the cover element produce light of different colors. Such a lighting device is complex in terms of its manufacture and assembly, and it must be taken into account that considerable clamping forces are required to hold the cover element, e.g. a film, in an essentially straight extension on the radiation side of the lighting device.

The invention is based on the object of simplifying a lighting device of the present type.

This object is solved by the features of claim 1. Advantageous developments of the inventions are described in the subclaims.

In the lighting device according to the invention, the cover element consists of several cover element parts which are self-supporting and are arranged next to one another in the surface area of the radiation side and are connected to the supporting structure of the lighting device by connecting elements assigned to the cover element parts.

Because the cover element in the inventive design consists of several self-supporting cover element parts arranged next to one another, not only is the construction of the cover element simplified, but there is also no need to tension the cover element, so that not only are complicated and expensive tensioning elements unnecessary, but the load on the supporting structure is also significantly reduced. The cover element parts can be held in their functional position in a simple manner, e.g. by resting them on supporting or holding elements that engage underneath them. In addition, the accessibility to the rear of the

The safety of the luminaires with cover element parts is improved, as it is no longer necessary to remove a large cover element in order to gain access to the lamps, but only individual cover element parts have to be removed in order to gain sufficiently large access to at least one lamp. 5

A further advantage of the design according to the invention is that the connecting elements supporting the cover element parts are distributed over the surface area of the radiation side and thus the load-bearing forces of the cover element parts are distributed over the entire supporting structure. As a result, the supporting structure is subjected to less stress and can be designed with less strength.

The subclaims contain features that lead to simple and cost-effective constructions that are easy to assemble or disassemble and also enable advantageous lamp arrangements and special lighting effects. 15

The invention and further advantages that can be achieved by it are explained in more detail below using advantageous embodiments of a preferred embodiment.

Fig. 1 shows a lateral region of a lighting device according to the invention in vertical section;

Fig. 2 shows the lighting device in plan view; Fig. 3 shows a schematic representation of the lighting device from below; Fig. 4 shows a ceiling part of the lighting device as an individual part in a view from below;

Fig. 5 shows the detail marked A in Fig. 1 in an enlarged view; Fig. 6 shows the detail according to Fig. 5 in a top view; Fig. 7 shows the detail marked B in Fig. 1 in an enlarged view;

Fig. 8 the detail according to Fig. 7 in the side view from the right. 30

The main parts of the lighting device, generally designated 1, are a support base 2, with which the lighting device 1 is attached directly or indirectly to a

suitable support, e.g. a ceiling or a wall, a plurality of support elements 3 and a plurality of cover element parts 4, which are preferably supported in one plane and are arranged at a distance a from the support base 2 by means of the support elements 3, wherein a plurality of lamps 5 are arranged between the cover element parts 4 and the support base 2, which can be held on the support base 2 and/or on the support elements 3 and/or special support parts connected thereto. When the lighting device 1 is in operation, the light generated by the lamps 5 is emitted towards the side of the lamps 5 facing away from the support base 2. The cover element parts 4 are thus located on a radiation side 6 of the lighting device 1. On the side of the lamps 5 facing away from the radiation side 6 or on the side of the lamps 5 facing the support base 2, reflection surfaces can be formed which reflect the light of the lamps 5 towards the radiation side 6 and thereby improve the light output of the lighting device 1 on the radiation side 6.

The cover element parts 4 are flat parts which extend transversely to the radiation direction 7, wherein the circumferential shape and/or circumferential size of the cover element parts 4 can be the same or different and regular or irregular, wherein dividing joints 8 are present between the cover element parts 4.

The cover element parts 4 complement each other to form a common cover element 4a, the peripheral shape of which can have an optional shape and in the present embodiment is quadrangular, e.g. square.

The cover element parts 4 are also preferably quadrangular, and in the present embodiment they are square. The light permeability of the cover element parts 4 can be achieved by making them translucent to light and consisting of a translucent material, e.g. plastic or glass. In the present embodiment the cover element parts 4 have a diffuse light permeability, and are made in particular of plastic, e.g. PMMA. They can be thin disks of approximately 3 mm, for example, which extend in a straight line.

Within the scope of the invention, it is possible to connect the cover element parts 4 directly or indirectly to the support base 2 by means of the support elements 3 so that they are held on the support base 2 by means of the support elements 3. In the present embodiment, the lighting device 1 is designed for indirect or direct attachment to a ceiling, wherein the support base 2 can be attached directly to the ceiling or can be suspended from a ceiling by means of pendulums or straps (not shown).

Due to the division of the common cover element 4a into cover element parts 4, these are designed in a modular manner, whereby the modules are preferably of the same size and shape. As can be seen in particular from Fig. 3, the common cover element 4a consists of nine identical modules, which are designated with M.

The support elements 3 are located on the one hand on the circumference of the common cover element 4a and in the area of the dividing joints 8 between the modules M, whereby the support elements 3 arranged in the area of the dividing joints 8 can each serve for the simultaneous fastening or holding of the cover element parts 4 adjacent to one another at the associated dividing joint 8. The support elements 3 are preferably arranged in the corners of the square cover element parts 4, whereby the support elements 3 arranged on the circumference U of the common cover element 4a can serve to support the two cover elements 4 adjacent at this point, while the support elements 3 arranged at the inner corners of the cover element parts 4 (here four pieces) can serve to support or fasten the four cover element parts 4 adjacent to one another at this point.

Within the scope of the invention, the support elements 3 can be designed so that they engage directly with the cover element parts 4. In the present embodiment, special additional support elements are arranged between the support elements 3 and the cover element parts 4. In both cases, it is advantageous to design the support elements with support parts that engage under the cover element parts 4, with several support parts distributed around the circumference being provided, on which the cover element parts 4 each rest. Such a holder is

advantageous here because it enables simple and quick access to the intermediate space 9 arranged behind the cover element parts 4 or to the lamps 9 and associated electrical equipment, e.g. electrical cables and ballasts 11 for the lamps 5.
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In the present embodiment, a rail system with rails 12, 13 is provided for supporting the cover element parts 4, of which the rails 12 extend along the dividing joints 8 and the rails 13 extend along the circumference U of the cover element 4a, wherein the cover element parts 4 rest on horizontal legs 12a, 13a of the rails 12, 13 which engage underneath them and the rails 12, 13 are connected to the support base 2 by the support elements 3. The inner rails 12 are preferably formed by T-rails arranged on the head, and the rails 13 arranged on the circumference are preferably formed by angle or U-rails, on whose inwardly directed legs 13a the associated cover element parts 4 rest. The edge lengths b of the cover element parts 4 are each dimensioned to be smaller than the edge lengths of the square modules M in this case, so that between the vertical legs 12b, 13b of the rails 12, 13 there is a distance c of a few millimeters, which is on the one hand so small that the cover element parts 4 cannot fall out due to sideways slipping and on the other hand is large enough that the cover element parts 4 can be inserted from above. The distance a between the cover element parts 4 and the support base 2 or the lamps 5 and their holders is dimensioned so large that the cover element parts 4 can be pushed through the module openings 14 surrounded by the associated rail sections by being inclined and can therefore be assembled and disassembled through the module openings 14.

As can be seen in particular from Fig. 5 and 6, of the rails 12 extending along the dividing joints 8, the rails 12A extending in one direction are continuous, whereby they can extend to the opposite rails 13 on the circumference U and can be connected to it, whereby the rails 12B extending transversely to the rails 12A are pieced together and are each located between the rails 12A and between these and the rails 13

extend along the circumference U. All rails are arranged at the same height so that all support surfaces 15 on the upper sides of the horizontal support legs 12a, 13a have the same height or these support surfaces 15 are arranged in one plane.
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Fig. 5 and 6 show a preferred embodiment for connecting a support element 3 arranged at the intersection point of a continuous rail and two fragmented rails 12A, 12B extending transversely to the latter and at the same time at the common corner point of four modules M. The support element 3, which preferably consists of a flat strip, is widened in a fork shape at its lower end, with its flat fork arms 3a overlapping the vertical leg 12b of the continuous rail 12A and being detachably connected to the laterally adjacent vertical legs 12c of the rails 12B extending between the continuous rails 12A, e.g. by means of screws or locking bolts 16 which pass through holes in the fork arms 3a and the vertical legs 12b. To connect the vertical leg 12b of the continuous rail 12A, the associated support element 3 has a protruding crosswise to the flat fork arms 3. Support bracket 3b, which is preferably formed by a cutout between the fork arms 3a and bent at a right angle and can be fastened to the vertical leg 12b in the same way as described above, e.g. by means of screws or locking bolts 16. The detachable connections formed in this way can be easily produced and quickly assembled. At their upper ends, the support elements 3 are also connected to the support base 2 or an attachment part thereof by a detachable connection, which is described further below.

In order to improve the appearance of the lighting device 1 and also to make better use of the light produced by the lamps 5, it is advantageous to cover the intermediate space 9 with side walls 17. It is also possible and advantageous to use the side walls 17 as support elements 3, so that the support elements 3 described above, which are formed by flat rods or strips in particular, are only arranged in the middle area of the common cover element 4a, while the side walls 17 form support elements 3 on its circumference U. In the present embodiment, the side walls 17 extend

not vertically but diagonally, converging towards the support base 2. This design is particularly suitable for a support base 2 whose horizontal dimensions are smaller than those of the common cover element 4a. The inclination of the side walls 17 in the present embodiment is approximately 45°, whereby the side walls 17 can extend in the circumferential direction over the entire horizontal dimension of the common cover element 4a or the support base 2 or can consist of several parts arranged next to one another with upright dividing joints 18. The side walls 17 are each formed by sheet metal parts which are stabilized at their upright edges by bent legs S.

7 and 8 show a special design of the detachable connection between the side walls 17 and rails 13 arranged on the circumference U, which may or may not be connected to one another at the corners of the cover element 4a. In the present embodiment, these rails 13 have a U-shaped cross-section that is tilted to the side, so that the free space 19 of the rails is open inwards and the upper rail leg 13c is preferably longer than the lower leg 13a. In addition, the upper leg 13c has a leg 13d in an upward and outward fold. The leg 13d is preferably formed during the extrusion of the rail 13. The gap between the legs 13c, 13d is designated 21. The side walls 17 have a correspondingly bent edge leg 17a on their lower edges, which is inserted into the gap 21. This gives the detachable connection a special stability, which also results in a tight connection and a good connection transition. In addition, the side walls 17 can each be detachably connected to the vertical legs 12c of the rails 12a, 12b by means of a tab, e.g. by means of screws or locking bolts 16 inserted into holes, which will be described later.

The support base 2 can be formed by a horizontal base frame 22, the shape of which preferably corresponds to the shape of the common cover element 4a, but can be designed with smaller horizontal dimensions, resulting in the sloping side walls 17, which can be connected at their upper edges to the bars 22a or profiles of the base frame 22. A ceiling wall 23 is arranged in the area of the base frame 22, so that the intermediate space 9

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can be closed at the top and sides. The inner sides of the ceiling wall 23 and preferably also of the side walls 17 can form reflection surfaces 24 which reflect the light from the lamps 5 towards the emission side 6 and thereby improve the light output. The reflection surfaces R can be formed by a white coating or paint. The ceiling wall 23 can extend to the upper edges of the side walls 17.

In the present embodiment, the side walls 17 and/or the ceiling wall 23 are formed by preferably combined parts in a modular design, the shape and size of these modules Ma corresponding to the shape and size of the modules M. In the present embodiment, this results in edge modules Mar that merge into the preferably slanted side walls 17 and at least one middle module Mam. As already described with regard to the side walls 17, these modules Ma or Mar, Mam consist of square sheet metal parts with angled edge legs S on their mutually facing edges, with which they lie against one another. These modules Ma can be attached to the support base 2 or to the base frame 22, e.g. by means of screw connections 24 in associated holes 25, which can have wing nuts 26, e.g. visible in Fig. 1, for the purpose of easy handling during assembly and disassembly.

The division of the side walls 17 and the ceiling wall 23 into the modules Ma described above has the further advantage that the edge legs S and the vertical rail legs 12b lie one above the other. This makes it easy to attach the support elements 3 to the edge legs S located above them in the interior, which in the present embodiment is done by hook-shaped fork arms 3c which are hooked into corresponding holes or slots 3d in the associated edge legs S. At the side edge of the support rail system, the vertical legs 12b can be connected to the associated edge legs S by means of vertically arranged tabs 26, e.g. by means of screws or locking bolts 16 passing through holes.

The lamps 5 are arranged as evenly as possible and distributed asymmetrically with respect to the vertical central axis 27 of the cover element 4, whereby they are preferably

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the side walls 17 and the ceiling wall 23 or the modules Ma forming them are fastened by means of known plug-in socket bodies 28 which can be fastened to the module walls 29 or to the edge legs S, e.g. locked in associated recesses, as is known per se. As can be seen from Fig. 3, a plurality of lamps 5 are arranged distributed around the central axis 27 and if they are, for example, straight fluorescent tubes, these are preferably arranged so that they extend in the circumferential direction. In the middle area of the lamp field designated 31, individual lamps 5 can be arranged distributed. In the present exemplary embodiment, one or at least two tube lamps are provided crosswise in the middle module Mam in two levels arranged one above the other, whereby several, e.g. two tube lamps 5 can be arranged next to one another. The associated operating or ballast devices 11 can be arranged next to the associated lamps 5, e.g. parallel or transversely thereto, as shown in Fig. 3. In the area of the edge modules Mar, which are angled on one side or two sides (corner module) in their outer edge areas, the lamps 5 can be arranged on one and/or both sides of the apex line 32 of the angle, as shown in Figs. 1 and 3. It is advantageous to assign the lamps 5 and preferably also the associated operating and ballast devices 11 to an associated module Ma, so that these modules can be prefabricated with the associated plug-in socket bodies 28 and electrical wiring.

As shown in particular in Fig. 2, the base frame 22 can be stabilized by a middle frame part 22a. In Fig. 2, fastening elements designated 33 are also shown, e.g. holes that can be used for direct fastening to a ceiling or wall or for fastening pendulums or bands in a design as a hanging lamp.

Since the self-supporting cover element parts 4 are partially transparent and are translucent in the present embodiment, the lamps 5 on the emission side 6 of the cover element parts 4 produce light images that merge into one another. The "light ceiling" formed in this way or its light image appears uniform despite its modular structure, whereby the individual light or lamp images are resolved due to the translucent and diffuse flow properties of the material of the cover element parts 4.

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and blend into one another. This means that clearly different light or lamp images or dazzlingly bright areas or stripes with dark areas in between are avoided.

It is advantageous to arrange lamps 5 in the lighting device 1 which generate or emit light of different colors. This allows special lighting effects to be achieved. The colors white, blue and red are particularly suitable. Preferably, next to or near each white lamp 5, a colored lamp 5, preferably a blue or a red lamp, is assigned. It is also advantageous to assign dimmers to at least some of the lamps, in particular the colored lamps 5, so that their light intensity can be optionally adjusted. This also allows special lighting effects to be achieved.

In order to avoid stripes in the overall light image, it is advantageous to also design the support elements or support rails 12A and 12B and/or preferably also the support rails 13 to be partially transparent, e.g. made of translucent material. Plastic, e.g. acrylic satin, is preferably suitable for this.

In the present embodiment, preferably all ceiling modules Ma are provided with lamps 5, in particular gas discharge lamps, preferably fluorescent tubes, preferably each with several lamps 5, e.g. four lamps, with in particular a colored lamp, e.g. a blue lamp 5 or a red lamp 5, being directly assigned to or next to a white lamp 5. In addition, three electronic operating or ballast devices 11 are present, one for each of the colored lamps 5 when two colored lamps 5 are present and a two-lamp one for the two white lamps 5. In addition, light control devices for all other modules Ma are preferably arranged in a single module Ma for preferably separately controlling the colored lamps 5, e.g. for switching them on or off and/or dimming them.

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Claims (19)

1. Lighting device with a support base ( 2 ) which can be fastened directly or indirectly to a ceiling or wall of a room, wherein a partially light-permeable cover element ( 4a ) is arranged on a radiation side ( 6 ) of the lighting device ( 1 ), which is connected to the support base ( 2 ) by support elements ( 3 ), wherein a plurality of lamps ( 5 ) are arranged on the rear side of the cover element ( 4a ), characterized in that the cover element ( 4a ) consists of a plurality of self-supporting cover element parts ( 4 ) which are arranged next to one another in the surface area of the radiation side ( 6 ) and are connected to the support base ( 2 ) by support elements ( 3 ) assigned to the cover element parts ( 4 ). 2. Lighting device according to claim 1, characterized in that the cover element parts ( 4 ) consist of translucent material, in particular of plastic. 3. Lighting device according to claim 1 or 2, characterized in that the cover element parts ( 4 ) are formed by preferably straight extending discs. 4. Lighting device according to one of the preceding claims, characterized in that the cover element parts ( 4 ) are of the same size and shape. 5. Lighting device according to one of the preceding claims, characterized in that the cover element parts ( 4 ) have a quadrangular or square shape. 6. Lighting device according to one of the preceding claims, characterized in that the cover element parts ( 4 ) rest on supporting parts. 7. Lighting device according to claim 6, characterized in that the supporting parts each engage under the peripheral edge of the cover element parts ( 4 ). 8. Lighting device according to claim 7, characterized in that the supporting parts are formed by horizontal legs of support rails ( 12 A, 12 B, 13 ). 9. Lighting device according to claim 8, characterized in that support rails ( 12 a, 12 b) arranged between two adjacent cover element parts ( 4 ) each have the shape of an upside-down T. 10. Lighting device according to claim 8 or 9, characterized in that the support rails ( 12 A, 12 B) are connected to the support base ( 2 ) by the support elements ( 3 ), e.g. are suspended therefrom. 11. Lighting device according to claim 10, characterized in that quick-closing or plug-in connections are provided for connecting the support elements ( 3 ) at least at one of their ends. 12. Lighting device according to one of the preceding claims, characterized in that the support element parts ( 4 ) are connected to the support base ( 2 ) at the peripheral edge of the cover element ( 4a ) by side walls ( 17 ). 13. Lighting device according to one of the preceding claims, characterized in that the support base ( 2 ) has a ceiling wall ( 23 ). 14. Lighting device, in particular according to claim 12 or 13, characterized in that the side walls ( 17 ) and/or the ceiling wall ( 23 ) consist of side wall parts and/or ceiling wall parts (Ma), in particular of the same shape and size as the cover element parts ( 4 ). 15. Lighting device according to one of claims 6 to 14, characterized in that the support parts or support rails ( 12 A, 12 B, 13 ) are translucent, preferably translucent, and preferably consist of plastic. 16. Lighting device according to one of the preceding claims, characterized in that the lamps ( 5 ) emit light of different colors. 17. Lighting device according to claim 16, characterized in that next to, preferably each lamp ( 5 ) emitting essentially white light, there is arranged a lamp ( 5 ) which emits light of a different color, in particular red or blue light. 18. Lighting device according to one of the preceding claims 14 to 17, characterized in that the side wall and/or ceiling wall parts form a prefabricated structural unit with one or more associated lamps ( 5 ) and at least one operating or ballast device ( 11 ). 19. Lighting device according to one of the preceding claims, characterized in that at least two tubular lamps ( 5 ) and/or operating or ballast devices ( 11 ) are arranged crosswise and one above the other.