EP1616124A1

EP1616124A1 - Louvered luminaire

Info

Publication number: EP1616124A1
Application number: EP04728803A
Authority: EP
Inventors: Gerald Ladstätter
Original assignee: Zumtobel Staff GmbH
Current assignee: ZUMTOBEL LIGHTING GmbH
Priority date: 2003-04-22
Filing date: 2004-04-22
Publication date: 2006-01-18
Anticipated expiration: 2024-04-22
Also published as: WO2004094897A8; EP1616124B2; EP1616124B1; WO2004094897A1

Abstract

A louvered luminaire comprises means for holding and for electrically connecting a tubular bulb (2) and comprises, when viewed in the radiating direction, a number of louver modules (3), which are mounted in front of the lamp (2) and which have passage openings (5) each provided for radiating light. The louver modules (3) are arranged to form an elongated lighting louver and are held by retaining elements (20).

Description

Louvrelight

The present invention relates to a luminaire with a grid which has passage openings provided for light emission.

Luminaires with elongated, rod-shaped light sources, for example fluorescent tubes, are usually used for lighting in offices or at other workplaces. In order to achieve illumination of the room that does not impair work at VDU workplaces and to avoid glare in particular, grids are arranged in front of the lamp when viewed in the direction of radiation, with the aid of which the light emission is restricted to a predetermined area. The use of fluorescent lamps guarantees a high luminous efficacy with a relatively low energy requirement.

Such a louvre luminaire usually consists of an elongated luminaire housing which has lamp sockets in its end regions for holding and electrically connecting at least one elongated lamp. The housing, which also generally houses an operating device for the lamp - for example an electronic ballast - also has holding elements in its lower area, with the aid of which a luminaire grid can be arranged and fastened in front of the lamp when viewed in the direction of radiation. The grid is usually a one-piece element, which is snapped onto the underside of the lamp housing or onto the fastening or holding means provided there.

Gas discharge lamps, in particular the fluorescent lamps mainly used for normal room lighting, are available in different lengths. In order to be able to provide luminaires of the same type in which a lamp of different lengths can be used, it is necessary to provide the luminaire housing and luminaire grid in the appropriate lengths. The production of these elements in different lengths is associated with increased costs, which is why the present invention is based on the object of specifying a cost-effective alternative to the production of lights of the type described above. At the same time, however, the lights should look appealing and have a very high quality.

The object is achieved by a lamp with the features of claim 1. The luminaire according to the invention has means for holding and for electrically connecting a tubular lamp as well as a plurality of grid modules arranged in front of the lamp, as seen in the direction of radiation, which each have passage openings provided for light emission. The grid modules are arranged one behind the other to form an elongated luminaire grid and are held by holding elements.

The solution according to the invention thus consists in forming a luminaire grid from a plurality of individual grid modules which, on their own, are relatively short and are arranged or put together to form the grid of suitable length. This makes it possible to provide only a single grid module of a predefined length, which is assembled with several identical modules to form luminaire grids in the desired lengths. For example, grid modules with a length of 300 mm can be provided, which are combined to the usual lengths of 600, 1200 and 1500 mm. As a result, the costs can be reduced considerably, since only a single tool is required for the grid modules, which are preferably produced by plastic injection molding. The considerable cost of tools in longer lengths can be saved by the present invention.

The various grid modules are preferably held together to form a single luminaire grid by means of profile elements which can be pushed on or snapped on laterally. These profile elements can be very slim and are stabilized in conjunction with the grid modules, so that overall a very stable arrangement results. This means that the profile elements can even replace the luminaire housing that is usually required, which saves further costs.

It is also essential here that the luminaire can also be used for indirect lighting, ie some of the light emitted by the lamp is emitted counter to the main light emission direction towards the top, for example to lighten the ceiling. In this case, the use of the profile elements that can only be slid on or snapped on is even particularly advantageous since, in contrast to a conventional luminaire housing, which is usually U-shaped in section, no partial holes have to be punched or milled in the housing base. which enable indirect light emission. At the same time, by using the only laterally arranged profile elements simplifies the supply and discharge of electrical lines.

The individual grid modules assembled to form the luminaire grid preferably consist - as already mentioned - of plastic. As a result, the individual modules can expand and contract slightly due to the temperature differences that occur. This could result in a narrow gap between the individual grid modules through which light can escape, which impairs the optical impression of the luminaire. To prevent this, according to a further advantageous exemplary embodiment of the present invention, the grid modules are compressed in the longitudinal direction by end springs provided on the longitudinal ends of the lamp grid, by elastic bands or the like. This ensures that the individual grid modules are still in contact with one another even after temperature fluctuations and that there is no undesired light emission.

The grid modules are preferably held together by the lateral profile elements with the aid of guide grooves and / or snap-in lugs, which enable the individual elements to be locked together. The profile elements can have a greater height than the grid modules themselves, as a result of which a space enclosed or laterally covered by the profile elements is formed above the luminaire grid and can be used, for example, to accommodate lamp operating devices. Another possibility is also to design the lateral profile elements in a U-shaped cross section, as a result of which a space is created in addition to the luminaire grid, in which corresponding lamp operating devices can be arranged.

In a further variant of the present invention, the luminaire has two luminaire grids of the type described above which are arranged laterally next to one another and which are connected to one another via a connecting profile arranged between them. All in all, this creates the possibility of producing a grid light in a very simple and inexpensive way.

Another advantageous development of the present invention relates to the design of the individual grid modules. These each preferably have a rear reflector which extends in the longitudinal direction and is intended to reflect part of the light emitted by the lamp against the direction of emission. In addition, passage openings are arranged in the rear reflector, which openings are intended for part of the light emitted by the lamp Let light pass through in the direction of radiation. Pot reflectors can also be connected to these openings in the direction of radiation.

The basic idea of this particular embodiment of the individual grid modules is to emit the light from a single tubular lamp via a multiplicity of light exit openings, which are followed by cup-shaped reflectors. This gives the impression of a row arrangement of individual halogen beams, which gives the lights a particularly high-quality appearance. At the same time, as will be explained in the following, a large number of appealing lighting effects can be achieved. In addition, a corresponding grid module is characterized by its simple construction, since the arrangement consisting of the rear reflector and the pot reflectors can be formed in one piece, which - as already mentioned above - is achieved in that the grid modules are produced by injection molding.

An advantageous further development of this variant then consists in that the pot reflectors are connected to one another at their edge regions via a connecting plate arranged parallel to the lamp, the connecting plate also being able to be connected in one piece to the reflectors or to the entire grid module. In this case, a particularly appealing optical effect can be achieved in that the connecting plate itself is made transparent. If a part of the light emitted by the tubular lamp is directed into an area outside the pot reflectors, their structure can be recognized by the transparent connecting plate. The introduction of the light into the area outside the pot reflectors can be achieved, for example, in that the rear reflector is at least partially translucent. There is also the possibility of coloring the back reflector in its transparent areas, so that the connecting plate appears in a different color. The top reflectors can protrude with their light outlet openings over the connecting plate or end flush with it.

The rear reflector is preferably designed such that it at least partially encompasses the lamp. In particular, it can be semicircular in cross section.

Another advantage of the specially designed grid modules is that part of the light emitted by the lamp is used for indirect lighting. In particular, provision could be made to provide a dimming or filter plate on the side of the lamp opposite the pot reflectors, Part of the light emitted by the lamp is directed onto the ceiling of the room to be illuminated. The edge areas of this anti-glare or filter plate, on the other hand, can be designed to be reflective in order to allow some of the light to be deflected into the space surrounding the top reflectors. Here, too, there is the possibility to color the translucent area of the anti-glare or filter plate and thus to make the ceiling area above the lamp appear in a different color.

The invention will be explained in more detail below with reference to the accompanying drawing. Show it:

Figure 1 shows a first embodiment of a lamp according to the invention in a perspective view.

Figure 2 shows the lamp shown in Figure 1 in section.

3 shows a preferred grid module for forming a luminaire grid in a perspective view;

4 shows the underside of the grid module;

5 shows a first variant of the lamp according to the invention;

6 shows a second variant of the lamp according to the invention;

Fig. 7 shows a third variant of the lamp according to the invention, for

Attachment to a mounting rail is provided;

8 shows a fourth variant of the luminaire according to the invention with two tubular lamps;

9 shows a further exemplary embodiment of a lamp according to the invention;

Fig. 10a, b different uses for the lamp shown in Fig. 9;

11 shows a further exemplary embodiment for a raster module with square pot reflectors; FIG. 12 shows the grid module of the lamp shown in FIG. 11;

13 shows the end view of a grid module with snaps on the side

Profile elements;

FIG. 14 is a perspective view of the arrangement according to FIG. 13;

15 two in the longitudinal direction one behind the other and to one

Luminaire grid assembled grid modules;

Fig. 16 two connected in series in the longitudinal direction and by one

Snap connection of assembled grid modules. ;

17 shows a perspective view of the front end of a luminaire grid comprising a plurality of series-connected grid modules with spring elements for applying a connecting pressure acting in the longitudinal direction;

18 shows the end view of a grid module with a U-shaped side profile; and

19 two luminaire grids arranged side by side.

Figures 1 to 12 initially show basic options for designing a grid light. Furthermore, a particularly preferred exemplary embodiment for a raster module is described.

The lamp 1 shown in FIG. 1 in perspective and in section in FIG. 2 essentially consists of a tubular elongated lamp 2, which is preferably a fluorescent lamp, and a grid module 3 formed from three series-connected modules and laterally or in the radiation direction arranged in front of the lamp 2 luminaire grid. The luminaire grid or the grid modules 3 are each formed by a rear reflector 4, which is semicircular in section and extends in the longitudinal direction of the lamp 2, from which a plurality of pot reflectors 6 with a circular light outlet opening 7 extend in the radiation direction. The lamp 2 is arranged inside the semicircular longitudinal reflector 4. The pot reflectors 6 adjoin the passage openings of the rear reflector 4, so that part of the light emitted by the lamp 2 is directed downward through these passage openings and the pot reflectors 6. The pot reflectors 6 are thus used for direct lighting of the space below the lamp 1 and have a shape by which the light emitted downwards by the lamp 2 is limited to a predetermined exit angle. Since glare effects are avoided in this way, the luminaire 1 according to the invention can also be used in particular for room lighting in office workplaces.

On both sides of the luminaire grid there are side boxes 10 extending over the length of the lamp 2, one of which is used for mounting an operating device 11 for the lamp 2. This operating device 11 can be, in particular, an electronic ballast for operating a gas discharge lamp, in particular a fluorescent lamp. For reasons of clarity, the versions for holding and electrically connecting the lamp 2 have been omitted.

As will be explained in more detail later, the side boxes 10 also serve as holding elements for holding the grid modules 3 arranged one behind the other to form the lamp grid. In the example shown, the two side boxes 10 are fastened to the grid modules 3 with the aid of side webs 9 which protrude from the outer sides of the rear reflector 4 and a connecting plate 8 arranged parallel to these side webs 9. This connecting plate 8 connects the top reflectors 6 at their edge regions , wherein the pot reflectors 6 with their light exit openings 7 protrude a little from the connecting plate 8. The connecting plate 8 and the side webs 9 also serve to produce special lighting effects, as will also be explained later.

In addition to the direct lighting achieved via the top reflectors 6, part of the light emitted by the lamp 2 is also directed upwards via the rear reflector 4 and accordingly serves for indirect room lighting. It is possible to vary the ratio between the direct lighting via the top reflectors 6 and the .Indirect lighting via the rear reflector 4 by changing the lamp position with respect to the rear reflector 4. As a result, the lighting properties of the luminaire 1 can be adapted to external conditions.

A grid module 3 with the back reflector 4 and the pot reflectors 6 is preferably formed by a single part, for example by injection molding will be produced. In the ideal case, the grid module 3 can be produced with a simply designed, slide-free molding tool; in the case of more complex structures, the workpiece is demolded using slide technology. The connecting plate 8 is also part of this one-piece plastic part, which is shown in an enlarged view in Figures 3 and 4.

As can be seen from the illustration in FIG. 4, the underside of the rear reflector 4 has a plurality of passage openings 5, to which the top reflectors 6 connect, which in turn are connected to one another in their end regions via the approx. 1-2 mm thick connecting plate 8. The cup reflectors 6, which are provided with a reflection layer at least on their inner sides, preferably have a size corresponding to the usual halogen spotlights of approximately 40-60 mm in diameter.

In order to reinforce the impression that it is a row arrangement of individual halogen spotlights, it can be provided that the inside of the pot reflectors 6 be made faceted. The production of the individual facets takes place during the production of the plastic part during the injection molding and is achieved by an appropriate design of the molding tools. The reflection layer is preferably applied by vapor deposition of an aluminum coating in a high vacuum.

Special lighting effects can be produced in the luminaire 1 with the preferred raster modules 3 in that the different areas of the raster modules 3 are designed differently reflective or translucent. This will be explained below with reference to FIGS. 5 and 6, which show two variants of the luminaire 1 shown in FIG. 1.

Compared to the lamp shown in FIG. 1, the variant shown in FIG. 5 differs by the inclined arrangement of the two side boxes 10, by means of which the lamp 1 as a whole is given a changed shape. To further reinforce the impression that there is a row arrangement of individual halogen spotlights, the outer sides of the pot reflectors 6 are illuminated, so that their pot shape can be seen through the transparent connecting plate 8. This brightening of the outer sides of the pot reflectors 6 is achieved in that the rear reflector 4 is partially transparent, at least in its upper regions, so that part of the light emitted by the lamp 2 can pass through the rear reflector 4. This light thus falls into a light chamber through the side wall of the rear reflector 4, the top reflectors 6 Connection plate 8 and additional reflectors 12 on both sides of the pot reflectors 6 is limited. The light entering the light chamber can leave it again via the connecting plate 8, so that the outside of the pot reflectors 6 can be seen. Another advantage of this embodiment is that the luminaire 1 does not appear dark when viewed under a flat angular range, but rather presents itself as a luminous but glare-free body.

The previously described effect of brightening the outer sides of the pot reflectors 6 is also achieved in the variant shown in FIG. 6, in which circular side boxes 10 are provided in section. For this purpose, a cut-off or filter plate 13, which is curved in section and extends over the length of the lamp 2, is provided on the top of the lamp 1 and is translucent in its central region 14, so that part of the light emitted by the lamp 2 is radiated upwards and can be used for ceiling lighting. In its edge areas 15, on the other hand, the anti-glare or filter plate 13 is designed to be diffusely reflective, for example coated white, so that the light impinging on these areas 15 from the lamp 2 is reflected downward. In addition, in this variant, the two side webs 9 are designed to be translucent, so that the light reflected on the side regions 15 of the anti-glare or filter plate 13 enters the region between the side boxes 10 and the pot reflectors 6 via these side webs 9, the outside of the pot reflectors 6 illuminate and can leave again via the transparent connecting plate 8. In this variant, the back reflector 4 can thus also be designed to be completely reflective.

A further development of the variant shown in FIG. 6 can consist in designing the side webs 9 as color filters so that the light illuminating the outside of the pot reflectors 6 is colored. As a result, additional color effects can be achieved, which, however, do not influence the light emitted downward via the pot reflectors 6 and used for the actual room lighting. The configuration as a color filter can of course also be provided in the variant shown in FIG. 5. The anti-glare or filter plate 13 shown in FIG. 6 can also be used in the other variants of the luminaire 1 according to the invention and, for example, also be designed as a color filter in order to make the ceiling area surrounding the luminaire appear in a different color. Furthermore, color filters, reflective surfaces or partial covers can be combined in any way in order to achieve different lighting effects. The lamp according to the invention can also be provided for mounting on a mounting rail 16, as is the case with the variant shown in FIG. 7. The U-shaped mounting rail 16 also serves to hold the operating device 11 for the lamp 2. The lamp 1 is attached to the mounting rail 16 with the aid of a cover cap 17, which is inserted into the mounting rail 16 from the underside and mechanically connected to it - for example locked - can be. On the underside of the assembly cap 17 there is also a roof reflector 18 which is arranged above the lamp 2 in the assembled state of the lamp 1. This roof reflector 18 is designed in such a way that the light emitted laterally upwards by the lamp 2 illuminates the ceiling area surrounding the mounting rail 16. The luminaire grid is attached to the mounting rail 16 or the end cap 17 with the help of forehead parts 19 which hold the various components of the luminaire 1, in particular the grid modules 3 assembled to form the luminaire grid.

FIG. 8 shows a two-lamp variant of a louvre luminaire 1, in which two fluorescent lamps 2 and luminaire louvres assigned to the lamps are arranged on both sides of a box 20a. Before switching devices 11 for operating the lamps 2 are both arranged in the box 20a, on the sides facing away from the box 20a, the grid modules 3 are closed and held together by C-shaped side walls 20.

FIG. 9 shows an asymmetrical variant of a louvre luminaire 1, in which an additional side box 10, which was provided in the exemplary embodiments of FIGS. 1, 5 and 6 for reasons of symmetry, was dispensed with. Instead, a C-shaped side wall closes the luminaire grid on the side opposite the box 10.

The luminaire shown in FIG. 9, in its asymmetrical shape, can be attached to a ceiling 21 of a room using a fastening rod 23 or ropes, as shown in FIG. 10a on the left side. In addition, however, there is also the possibility of combining two asymmetrical lights 1 of this type in order in turn to arrive at a symmetrical overall arrangement 23 or 26. This can be done, for example, by arranging a decorative surface 25 between the two asymmetrical lights, which in turn are each fastened to the ceiling with the aid of fastening rods 23, which is for example transparent or has lattice structures. In the variant 26 shown on the right-hand side of FIG connected, the overall arrangement being fastened to the ceiling 21 with the aid of steel cables 27. Figure 10b shows the undersides of these two variants.

The shape of the top lights can basically be chosen freely. In the exemplary embodiment of the luminaire 1 shown in FIG. 11, the grid modules 3 of which are shown in an enlarged representation in FIG. 12, cup reflectors 6 with a square light exit opening 7 are provided. Furthermore, in this embodiment it was disregarded that the edge regions of the top light 6 protrude beyond the connecting plate 8. However, other shapes would also be conceivable for the pot reflectors 6, for example they could also be oval or rectangular.

The reflectivity of the individual areas of a raster module 3 can be designed individually. For example, the pot reflectors 6 can be made very smooth on the inside, so that a high-gloss layer is formed during the vapor deposition, while the connecting plate 8 surrounding the pot reflectors 6 can be structured somewhat coarser, so that a matt layer results. This can already be taken into account when designing the injection molding tool, so that no reworking of the plastic workpiece is necessary.

The luminaire grid composed of the special grid modules is characterized by the variety of lighting effects that can be achieved with it, but which have no effect on the functionality of the luminaire in room lighting or the lighting of workplaces. In other words, despite the various optical effects, the luminaire is still able to suitably illuminate office spaces.

The joining of a plurality of grid modules to form a luminaire grid according to the present invention will now be explained in more detail with reference to the following FIGS. 13 to 19. Reference is made primarily to the grid module shown in FIGS. 3 and 4 or 11. However, it goes without saying that a luminaire grid in the sense of the present invention can be formed by any type of grid module with light exit openings for light emission. In particular, it is not absolutely necessary that the grid module - as in the preferred variant of FIGS. 3, 4 and 11 - also enables indirect light radiation.

The grid modules 3 are preferably injection molded into plastic in a single length of 300 mm. These individual grid modules 3 can then be used for lighting grids in the usual lengths of 600, 1200 and 1500 mm be put together. According to the illustration in FIGS. 13 and 14, this is done by snapping on the holding elements or connecting profiles 20, which on their own can already form the luminaire housing.

The profiles 20 can be very slim, they are then stabilized in the snapped-on state in connection with the individual grid modules 3, which overall results in a relatively stable arrangement. It is also important here, as can be seen from the illustrations in FIGS. 13 and 14, that the variant according to the invention with lateral profiles 20 for holding the straight modules 3 shown, in which both direct and indirect light emission is provided, in particular Raster modules 3 is significantly cheaper than the use of a usually U-shaped housing profile, in the bottom side of which additional holes would have to be made, for example punched or milled, in order to allow indirect light emission. Furthermore, due to the fact that the housing formed by the profile elements 20 is open towards the top, electrical lines can be fed in or out very easily.

Instead of snapping on, the side profiles 20 could also be pushed on. Depending on the type of installation, corresponding connecting elements 20, 20 _{2 are to be provided} in the form of guide grooves or snap noses, which can extend over the entire length of the profiles 20. It is essential here that the connecting elements 20, 20 ₂ responsible for holding the grid modules 3 are provided at least on the respective end regions of the grid modules 3, because only a fixation in these end regions leads to the necessary stability of the entire arrangement. In other words, it is to be avoided that the profiles 20, which are preferably extruded from aluminum, can bend.

To increase the stability, the fact that the grid modules 3 abut each other on their respective end faces over their entire height. In addition, the grid modules 3 can be glued or welded to one another in these areas, as is indicated in FIG. 15. Another possibility, which is shown in FIG. 16, is to provide snap devices 32 or 33 at the respective ends of the grid modules 3, by means of which the individual grid modules 3 are connected together. In order to be able to achieve the desired cost effects, those connection forms between the grid modules 3 and the profile elements 2 that can be closed without tools are particularly preferred. The stability of the entire luminaire grid is increased by the previously described connection of the individual grid modules 3 to one another, but it is not absolutely necessary. If the grid modules 3 are only loosely joined together, another problem arises from the fact that the grid modules 3 are made of plastic. Since the grid modules 3 can be exposed to quite different temperatures over time, it must be taken into account that they can partially contract or expand. This could result in 3 gaps or free spaces between the end faces of the individual grid modules through which light can escape, although this affects the optical impression of the luminaire. In order to avoid this problem, in the exemplary embodiment shown in FIG. 17, springs 31 are arranged on the end faces of the luminaire grid, which push the individual grid modules together and thus ensure that their end faces lie against one another at all times. As an alternative to the springs 31 shown, elastic bands or other elements which exert an axial pressure on the grid arrangement could also be used.

In the previous exemplary embodiments, it had been assumed that the grid modules 3 abut one another directly with their respective end faces in order to form the luminaire grid. In fact, however, the individual modules 3 can also be deliberately arranged at a distance from one another.

An inexpensive workplace lamp with direct and indirect light emission according to the present invention would then be similar to that in, for example

Fig. 1 of DE 33 01 277 AI shown lamp. The lamp (not shown) according to the invention is formed from two grid modules 3, each

Module 3 is assigned a lamp 2 and the two grid modules 3 in

Seen in the longitudinal direction are spaced from each other. Two essentially L-shaped profiles 20 form the outside of the lamp 1. The profiles

20 have special snap arms, which in the snap noses of the

Raster modules can intervene, as is shown, for example, in FIGS. 13 and 14. An operating device unit is arranged between the grid modules 3 and can also accommodate mounting elements for mounting the lamp on a ceiling. On the face side, the lamp is covered by simple end pieces that

The space for the device unit is also covered by cover strips.

The device unit essentially consists of a mounting plate and the operating devices and, if applicable, of the mounting elements for mounting the lamp 1 on the ceiling. The mounting plate is preferably designed in such a way that it fits with the profile parts 20, that is to say, similarly to the grid modules 3, has snap noses or the like which cooperate with the snap arms of the profiles 20. In this variant too, the application of an axial pressure in accordance with the arrangement in FIG. 17 can be provided in order to ensure that the individual elements of the luminaire lie against one another in the longitudinal direction without gaps.

The profile parts 20 thus simultaneously form the outer wall of the lamp housing. It goes without saying that the outer sides of the profiles 20 can be designed in different ways. For example, grooves or ribs can be provided, or the outside can also be made very smooth. The surface of the profiles 20 could also be colored by different coating methods. The method of powder coating is preferably used for this.

Another conceivable variant is that 20 additional outer profiles are applied to the profiles, which do not necessarily have to be made of metal. These outer profiles are preferably in turn snapped onto the holding profiles 20 and ultimately form the outer wall of the lamp housing.

18 shows a variant of the luminaire according to the invention, in which a U-shaped profile 20 is used instead of an L-shaped profile. In this case, a space enclosed by the profile 20 is formed on the side next to the luminaire grid, in which, for example, lamp operating devices can in turn be accommodated. The previously mentioned space for control gear is not necessary in this case.

Another variant (not shown) of the luminaire according to the invention consists in designing the L-shaped profiles 20 significantly higher than the grid modules 3. In this case, above the grid modules 3 a free space is created which is laterally covered by the side profiles 20 and which is also used for storage which can be used by lamp control gear. If the operating device is arranged in the middle of the luminaire 1, the ends of the luminaire can be designed in such a way that light can emerge both directly in the direction of the surface to be illuminated and - now only in the end regions of the luminaire - indirectly to the ceiling , A final variant, shown in FIG. 19, consists in using a profile part 20 which has snap arms arranged on both sides for latching with raster modules 3. This makes it possible to form 20 luminaire grids on both sides of the central profile element and accordingly to implement two-lamp or multi-lamp luminaires.

In order to raise the high-quality impression of the lamp, it has been shown that it is necessary to cover individual cells or pot reflectors of the grid modules in particular. These are, in particular, those light exit openings over which the lampholders of the lamps are arranged, since uniform light radiation cannot be achieved in these areas. Corresponding grooves are therefore preferably provided in the grid modules in order to accommodate corresponding covers. These grooves can also be provided to snap receptacle elements - for example bow-like spring elements - for mounting the lamp on a ceiling.

The luminaire according to the present invention is thus distinguished by its simple construction, which makes it possible to provide luminaires in different variants and lengths by making minor changes to the individual components. At the same time, visually appealing lighting effects can be achieved and the luminaire can be given a high-quality appearance.

Claims

Expectations

1. Luminaire, with means for holding and for electrically connecting a tubular lamp (2), and several - seen in the direction of radiation - arranged in front of the lamp (2) grid modules (3), each of which have passage openings (5) provided for light emission, wherein the grid modules (3) are arranged in an elongated luminaire grid and are held by holding elements (20).

2. Luminaire according to claim 1, characterized in that the holding elements (20) are formed by profile elements which can be pushed on or snapped on laterally onto the grid modules (3).

3. Luminaire according to claim 2, characterized in that the lateral profile elements have a greater height than the grid modules (3) and thereby enclose a space above the lamp grid for receiving lamp operating devices (11).

4. Luminaire according to claim 2, characterized in that the lateral profile elements have a U-shaped cross section and thereby include a space located laterally next to the luminaire grid for receiving lamp operating devices.

5. Luminaire according to one of claims 1 to 4, characterized in that on the grid modules (3) and / or the holding elements (20) connecting elements (20 ,, 20 ₂ ) are provided.

6. Luminaire according to claim 5, characterized in that the connecting elements (20, 20 ₂ ) are guide grooves and / or snap noses.

7. Lamp according to one of the preceding claims, characterized in that the grid modules (3) are arranged with their respective end faces directly adjacent to each other.

8. Luminaire according to claim 7, characterized in that the grid modules (3) are connected to one another at their respective end faces by gluing, welding or by means of snap elements (32, 33) provided on them.

9. Luminaire according to one of claims 1 to 6, characterized in that the grid modules (3) are arranged spaced apart from one another in the longitudinal direction.

10. Luminaire according to claim 9, characterized in that between two grid modules (3) an operating device unit is arranged, which has at least one lamp operating device (11) and / or mounting elements for mounting the lamp (1) on a ceiling.

11. Luminaire according to claim 9 or 10, characterized in that each grid module (3) is assigned a lamp (2).

12. Luminaire according to one of the preceding claims, characterized in that the grid modules forming the lamp grid (3) are compressed in the longitudinal direction by end springs provided on the longitudinal ends of the lamp grid, by elastic bands or the like.

13. Luminaire according to one of the preceding claims, characterized in that it has two luminaire grids arranged laterally next to one another, which are connected via connecting profiles arranged between them.

14. Luminaire according to claim 13, characterized in that the connection profiles have snap arms on both sides.

15. Luminaire according to one of the preceding claims, characterized in that means for covering individual passage openings of the grid modules (3) are provided.

16. Luminaire according to one of the preceding claims, characterized in that a grid module (3) each has a longitudinally extending rear reflector (4) which is intended to a part of the light emitted by the lamp (1) against the direction of radiation reflect, wherein in the rear reflector (6) the passage openings (5) are arranged, which are intended to allow part of the light emitted by the lamp (2) to pass in the radiation direction.

17. Luminaire according to claim 16, characterized in that cup reflectors (6) are connected to the passage openings (5) in the rear reflector (4) in the radiation direction.

18. Luminaire according to claim 17, characterized in that the rear reflector (4) and the pot reflectors (6) are integrally connected to one another.

19. Luminaire according to claim 17 or 18, characterized in that the pot reflectors (6) are connected to one another at their edge regions via a connecting plate (8) arranged parallel to the lamp (2).

20. Luminaire according to claim 19, characterized in that the connecting plate (8) is integrally connected to the pot reflectors (6).

21. Luminaire according to claim 19 or 20, characterized in that the connecting plate (8) is transparent.

22. Luminaire according to one of claims 19 to 21, characterized in that the connecting plate is approximately 1 - 2 mm thick.

23. Luminaire according to one of claims 19 to 22, characterized in that the pot reflectors (6) with their light exit openings (7) protrude beyond the connecting plate (8).

24. Lamp according to one of claims 17 to 23, characterized in that on the pot reflectors (6) opposite side of the lamp (2)

Abblend- or filter plate (13) is arranged, which is formed in its edge regions (15) reflective.

25. Luminaire according to one of claims 17 to 24, characterized in that the grid module (3) formed from the rear reflector (4) and the pot reflectors (6) is formed by an injection molded part.

26. Luminaire according to one of claims 17 to 25, characterized in that the inner sides of the pot reflectors (6) are faceted.

27. Light according to one of claims 17 to 26, characterized in that the pot reflectors (6) have a circular light outlet opening (7).

28. Lamp according to one of claims 17 to 26, characterized in that the pot reflectors (6) have a square or rectangular light outlet opening (7).

29. Lamp according to one of claims 17 to 28, characterized in that the light exit surfaces (7) of the pot reflectors (6) have a size of about 40 - 60 mm in diameter

30. Luminaire according to one of claims 16 to 29, characterized in that the rear reflector (4) at least partially surrounds the lamp (2).

31. Luminaire according to claim 30, characterized in that the back reflector (4) is semicircular in cross section.

32. Luminaire according to one of claims 16 to 31, characterized in that the back reflector (4) is at least partially transparent.

33. Luminaire according to claim 32, characterized in that the back reflector (4) is colored in its transparent areas.