EP3364099B1 - Modular lamp with direct and indirect share - Google Patents

Description

The invention relates to a horizontally elongated lamp according to the preamble of claim 1 as well as a set with lamp elements for realizing a lamp according to the invention and a method for producing a horizontally elongated lamp.

Generic lights are designed for use in offices. For this purpose, generic lights are on the one hand designed to be elongated in a horizontal direction and on the other hand are designed to provide both indirect room lighting and direct room lighting. As intended, generic lights are mounted on the ceiling of a room. The direct room lighting is intended to provide direct illumination of a workstation, for example a desk, and the indirect room lighting is intended to provide background lighting for a room. In the case of luminaires of the generic type, the provision of direct and indirect room lighting is ensured via sections arranged horizontally next to one another, namely via at least one indirect section and via at least one direct section. When a generic luminaire is properly installed in a room, the luminaire is mounted on the ceiling of a room in such a way that light is emitted from the top of the luminaire and from the indirect section Direct-section light is radiated away from the bottom of the fixture. The terms "top" and "bottom" relate to opposite sides of the lamp in a vertical direction that is perpendicular to the horizontal direction. In the case of luminaires of the generic type, the provision of indirect room lighting is preferably ensured by the indirect section in that the indirect section is designed to emit light into a first half-space that lies on the top of the luminaire and through a dividing plane that is perpendicular to the vertical runs, is separated by a second half-space, wherein the direct section is designed to emit light into the second half-space.

Luminaires of the generic type also have a carrier and a horizontally elongated housing which encloses the carrier at least in sections perpendicular to the horizontal direction, with light sources being arranged on the carrier and / or on the housing. The housing has light exit openings from which light can exit so that the luminaire has the properties mentioned in its at least one indirect section and in its at least one direct section. Depending on the design of a generic lamp, the carrier can be used to stabilize the housing and / or to carry at least some, in particular all, light sources and / or to carry an operating device and / or to carry the housing if the lamp can be mounted on a ceiling as intended and the ceiling is connected to the carrier via holding devices such as ropes.

Due to their described suitability for lighting office spaces, luminaires of the generic type must fulfill various tasks. On the one hand, the lights should be visually appealing. On the other hand, the luminaires should provide direct lighting that is as glare-free as possible. In addition, the lights should provide pleasant backlighting. In addition, the luminaires should be suitable for being adapted to given rooms in such a way that pleasant lighting of the room can be achieved for a large number of different sizes of a room to be illuminated and different orientations of the windows in the room. Last but not least, generic lights should also be inexpensive to manufacture so that a room can be equipped with a sufficient number of lights without this being associated with considerable costs. Luminaires of the generic type only inadequately fulfill these tasks. For example, luminaires of the generic type are only available in specified lengths, which makes it difficult to adapt the luminaires to specified spaces. Also, a generic lamp is mostly not suitable for providing a more pleasant direct lighting of a workplace in itself, but two such lights are usually required, each of which must be mounted on one side next to a workplace so that the workplace is evenly illuminated from both sides and there is no glare on a work surface at the workplace. In addition, generic lights are often perceived as unpleasant by people who are in a room illuminated by the lights because of the abrupt change between direct and indirect sections. From the document US 2010/0002426 A1 For example, a lamp is known from the prior art which has a plurality of lamp elements, each of which comprises a carrier element and is designed to provide direct lighting and indirect lighting of a room. Luminaire elements that are adjacent to one another are connected to one another via their carrier elements, a ring-wise translucent end cap being provided at the end of each carrier element with which it rests against the neighboring carrier element. From the document US 2009/0002978 A1 a lamp with a plurality of lamp elements is known, each of the lamp elements having a carrier element and two adjacent lamp elements being connected to one another via a coupling element which is attached to their carrier elements.

The invention is based on the object of providing a horizontally elongated lamp which at least partially eliminates at least some of the above-mentioned disadvantages of generic lamps. The invention is also based on the object of providing a set of lighting elements for realizing such a lamp. Furthermore, the present invention is based on the object of providing a method that enables the production of a horizontally elongated luminaire that at least at least partially remedies some of the disadvantages of generic lights described above.

As a solution to the stated objects on which the invention is based, the invention proposes a luminaire having the features of claim 1. A luminaire according to the invention is designed to be horizontally elongated and has at least one horizontally running indirect section for radiating light from an upper side of the lamp to provide indirect room lighting and at least one horizontally running direct section arranged horizontally next to the indirect section for radiating Light from an underside of the luminaire which is opposite the upper side in a vertical direction for providing direct room lighting. The luminaire according to the invention also has a carrier and a horizontally elongated housing which at least partially encloses the carrier perpendicular to the horizontal direction, with light sources being arranged on the carrier and / or on the housing. The suitability of the indirect section and the suitability of the direct section for the respective provision of indirect or direct room lighting can be provided as explained with regard to luminaires of the generic type. It is essential that the indirect section, as explained for generic lamps, is designed to emit light into a first half-space located on the top of the lamp and the direct section is designed to emit light into a second half-space located on the underside of the lamp , the two half-spaces being separated from one another by an imaginary cutting plane running perpendicular to the vertical. In particularly preferred embodiments, the indirect section can do this be designed, in addition to providing indirect room lighting, also contribute to direct room lighting by being designed to radiate light not only into the first half-space but also into the second half-space. Likewise, in a particularly preferred embodiment, which can be combined with the aforementioned, the direct section can be designed to contribute not only to providing direct room lighting but also to indirect room lighting by sending light not only into the second half-space but also into the first Emits half-space. In a preferred embodiment, the indirect section is designed in such a way that it emits light exclusively into the first half-space over at least 30%, in particular at least 50%, in particular over at least 70%, in particular over at least 90% of its horizontal extension, whereas the direct section -Section is designed to emit light exclusively into the second half-space over at least 30%, in particular at least 50%, in particular at least 70%, in particular at least 90% of its horizontal extent. The respective areas in which the indirect section exclusively emits light into the first half-space or the direct section exclusively emits light into the second space are particularly preferably arranged distributed around the center in relation to the horizontal direction, so that the respective sections only can also radiate light into the other half-space at their horizontal edge areas. In another embodiment, the indirect section is designed to radiate light exclusively into the first half-space and the direct section is designed to radiate light exclusively into the second half-space. In the luminaire according to the invention, the light sources are arranged on the carrier and / or on the housing, whereby they are arranged such that they are enclosed in sections by the housing perpendicular to the horizontal direction
this enclosing is interrupted by light exit openings which are provided in the housing. Both the carrier and the housing are preferably designed to be horizontally elongated, the carrier extending uninterrupted over at least 70%, in particular over at least 80% of the horizontal extent of the housing in the horizontal direction. This ensures a particularly high level of stability for the lamp. The carrier can be composed of several carrier elements, which are arranged horizontally next to one another but are firmly connected to one another so that the carrier runs horizontally without interruption. The light sources and in particular an operating device are particularly preferably arranged on the carrier. This can particularly simplify the fitting of the lamp, and in addition, light sources and / or operating device can be kept particularly secure. In general, the operating device, via which the light sources of the lamp are controlled, is particularly preferably arranged within the housing. Such an operating device can comprise various components, for example an electronic ballast and / or a current and / or voltage limiter and / or a controller that is connected to or provides a light management system. In one embodiment, the luminaire does not have such an operating device, but is supplied with power via an external operating device and controlled accordingly. In one embodiment, the lamp has components of an operating device or components of an operating device are arranged within the housing of the lamp, with other components of the operating device being arranged outside the lamp, for example in a ceiling to which the lamp is suspended. In general, the lamp is particularly preferably suspended from a ceiling via its top. For this purpose, the luminaire can preferably have mounting units on the top of its Housing are arranged and are connected to the housing and / or the carrier, wherein these assembly units can be suspended from a ceiling via holding devices, such as ropes or wires.

According to the invention, the housing is formed from several, ie at least two, housing elements and the carrier from several, ie at least two, carrier elements. Housing and carrier are thus structurally defined by the elements mentioned and in particular consist of these elements. The indirect section has a first housing element and a first carrier element, which are firmly connected to one another to form a first lamp element. The direct section has a second housing element and a second carrier element, which are firmly connected to one another to form a second lighting element. For example, the first housing element and the first carrier element and / or the second housing element and the second carrier element can each be formed in one piece. Alternatively, the first housing element and the first carrier element and / or the second housing element and the second carrier element are each separate components, which are initially manufactured independently of one another and are then firmly connected to one another to form the first or second lamp element. This connection can be, for example, a permanent connection, for example via welding, or alternatively a releasable connection, for example via screwing. Various possibilities for realizing a fixed connection between the housing element and the carrier element are known to the person skilled in the art, for example screw, latching or riveting connections. In one embodiment, the indirect section consists of the first lighting element and the direct section consists of the second lighting element, ie the first lighting element forms the indirect section and the second lighting element forms the direct section. The two light elements are releasably fixed to each other. The person skilled in the art is also familiar with conventional means for such a releasable fixation, such as, for example, the provision of a latching connection or screw connection or a combination of both. When the detachable connection of the two lamp elements is released, the lamp elements can be removed from one another, each of the lamp elements comprising its associated carrier element and housing element which are preferably firmly connected to one another independently of the releasable connection of the two lamp elements. According to the invention, the housing between the two housing elements of the two lamp elements also has a recess running vertically from the top to the bottom of the lamp to ensure transverse light emission in a transverse direction that is perpendicular to the horizontal direction and to the vertical direction. The cutout thus enables light to pass through between the housing elements of the two adjacent lighting elements. Due to the vertical course of the cutout, the cutout enables an optical connection from the top to the bottom, so that light is not only emitted on the top of the indirect section and on the underside of the direct section, but a light path is provided between the two sections . The recess thus runs in any case with a vertical component, but can also run at an angle to the vertical direction, but from the top to the bottom. The recess particularly preferably runs continuously from the top to the bottom. Particularly preferably, the recess runs on both transverse sides of the housing from the top to the bottom. According to the invention, the recess opens into one of the light exit openings provided in the direct section on the underside and into one of the light exit openings provided in the indirect section on the top side. This connects the Recess for the light exit openings provided in the direct section and the indirect section. Particularly preferably, the recess runs on both transversal sides and opens into a light exit opening provided in the direct section on the underside and into a light exit opening provided in the indirect section on the top side, so that one over the recess in combination with the light exit openings the housing is provided with a circumferential opening for the emission of light in relation to the horizontal. Thus, in a preferred embodiment, the recess is provided on both transversal sides and runs vertically on both sides from the top to the bottom, whereby a first light exit opening provided on the top of the housing and a second light exit opening provided on the bottom of the housing through the recess around the horizontal direction closed circumferential opening is provided in the housing, through which light can pass out of the housing to the outside. This opening does not necessarily have to run perpendicular to the horizontal but in some embodiments it can also run curved and at different angles to the horizontal direction over its course, but always runs closed around the horizontal direction.

Particularly preferably, the inside of the housing elements and / or the carrier elements, in particular on their sides facing the light sources, are designed to be reflective at least in sections. This enables light to be guided within the housing with as little loss as possible and, in particular, to ensure that light is guided to the recess.

By providing the recess, there is an abrupt transition between the direct section and the indirect section effectively prevents, since the recess allows the escape of light in a transverse direction which is perpendicular to the horizontal direction and to the vertical direction. As a result, the lamp according to the invention enables a much more pleasant feeling of space than lamps from the prior art. According to the invention, the provision of the recess between two adjacent housing elements is made possible in that two adjacent lighting elements are connected to one another via their carrier elements, which are arranged within the housing elements, so that a lateral light exit opening can be provided via the recess without affecting the stability of the Lamp suffers. Accordingly, a lamp according to the invention can be provided with a very long horizontal extension, in particular with a large number of lamp elements, two adjacent lamp elements preferably being provided alternately as a direct section and an indirect section. While the recess supports a pleasant illumination of a room, the fixation of neighboring lighting elements via their carrier elements ensures the stability of the lamp and also enables a modular construction of the lamp, since any number of lighting elements can be provided depending on the given space, which then via their Support elements can be connected to one another. The connection between adjacent luminaire elements in such a modular luminaire according to the invention can always be provided as explained in the present description, whereby a direct section is preferably always arranged next to an indirect section, so that always a direct-emitting luminaire element next to an indirect-a -Emitting luminaire element is arranged and these luminaire elements are connected to one another as mentioned above and explained below. The recess is particularly preferably covered by a translucent optic. By a Translucent optics can be prevented because of their diffuse scattering properties a direct view from the outside through the optics into the housing, which can be particularly preferred to cover the carrier element or the carrier elements that run inside the housing along the recess. Particularly preferably, the recess has a horizontal extension of at least 0.5 cm, in particular at least 1 cm, over its entire vertical extension and / or a horizontal extension which is at least one tenth, especially at least one fifth of the vertical extension of the housing. The desired effect of the recess can be achieved particularly advantageously via a corresponding minimum dimension of the recess over its entire vertical extent.

In general, the luminaire preferably has a vertical extension of less than 5 cm, in particular less than 4 cm, over at least 90% of its horizontal extension and / or a ratio between its transverse and vertical extension of more than 2, in particular more than 2.5. It has been found that a particularly good optical effect can be achieved in a room via such a flat and in particular at the same time wide lamp, since the top and bottom of the lamp are not far apart and at the same time a large one over the wide extent of the lamp radiating surface of the luminaire can be provided. The invention thus relates in particular to such a flat and wide luminaire, with the simultaneous provision of housing elements and support elements arranged therein as well as the provision of recesses between the housing elements a sufficiently robust luminaire can be provided despite these geometrical dimensions, its light emission and appearance from People in a room are perceived as very pleasant. Furthermore, the lamp is generally particularly preferably designed such that, when its maximum emission intensity is set, it has such a distribution of the emitted light intensity that at least 70%, in particular at least 80%, in particular at least 90% of the light intensity emitted by the lamp is exclusively in a first, at the top of the luminaire located half-space. The setting of the maximum light intensity that can be emitted by the lamp can be provided in the case of dimmable lamps in that the maximum light intensity is selected for the dimming parameter. In the case of non-dimmable lights, the maximum light intensity that can be emitted corresponds to the light intensity that the light emits after switching on. The corresponding distribution between the intensity with which light is emitted on the upper side and the intensity with which light is emitted on the underside has been found to be particularly advantageous, since this makes it possible to provide sufficiently bright background lighting in a room. This is based on the knowledge that a significantly higher light intensity should preferably be used for the background lighting of a room than for the direct lighting of a workplace, since this provides sufficient lighting and glare can be avoided with direct lighting if possible.

Particularly preferably, the carrier runs continuously over at least 90% of the horizontal extent of the lamp in the horizontal direction. Particularly preferably, the carrier elements of the lamp elements each run continuously over at least 70%, in particular at least 90% of the horizontal extent of the respective housing elements of the lamp elements. Due to the corresponding continuous course of the carrier elements or the carrier the lamp can be designed to be particularly robust. Particularly preferably, the housing has, at least in sections perpendicular to the horizontal direction, a cross section which forms a U-shape with a base section and an open end opposite the base section in a vertical direction. The carrier is particularly preferably arranged within the U-shape of the housing. The U-shape can be realized, for example, by providing a base section with two housing legs extending vertically to the base section. For example, the U-shape can be implemented by providing a substantially rectangular or oval cross-section of the housing while providing a recess at a vertical end of the housing. The U-shape of the housing is realized in particular in that all housing elements have such a U-shape as explained above. The corresponding design of the housing, which has a U-shape with its cross section, has several advantages. On the one hand, a light exit opening on the top or bottom can be ensured in a simple manner via the U-shape. On the other hand, the U-shape ensures high rigidity of the housing, so that the housing can be implemented with extremely thin metal sheets, in particular with metal sheets with a thickness of less than 1 mm, in particular less than 0.8 mm. In addition, a corresponding configuration of the housing can enable a carrier arranged within the housing to be effectively covered. Particularly preferably, both the first housing element of the indirect section and the second housing element of the direct section each have such a U-shape with its cross-section, the open end of the U-shape of the first housing element being arranged on the top of the lamp and wherein the open end of the second housing element is arranged on the underside of the lamp.

In one embodiment, the luminaire has a first group of light sources which are arranged exclusively on an upper side of the first carrier element of the indirect section, as well as a second group of light sources which are exclusively arranged on an underside of the second carrier element of the direct section, wherein in particular the different groups of light sources can be switched and / or dimmed independently of one another. The luminaire preferably has a control device for ensuring such a switching and / or dimming. By providing the different light source groups on the top and bottom of the support elements, the explained property of the direct section or indirect section can be made possible in a particularly simple manner, with the provision of independent switching and / or dimming a particularly targeted setting of the radiation characteristics of the lamp can enable, in particular, an independent variation of the indirect and direct lighting. The lamp particularly preferably has further groups of light sources, for example further groups of light sources, which are arranged on further carrier elements and further lamp elements. In particular, in one embodiment the luminaire has at least a first additional group of light sources which are arranged on the underside of the first carrier element and / or a second additional group of light sources which are arranged on the upper side of the second carrier element, so that the indirect -Section in addition to indirect lighting of a room can simultaneously ensure direct lighting of a room and / or the direct portion in addition to direct lighting of a room can simultaneously provide indirect lighting of a room.

In one embodiment, the first and the second carrier element overlap in a horizontal section and are releasably fixed to one another in this horizontal overlap section. By providing such an overlapping section, a particularly robust attachment of the two adjacent carrier elements to one another can take place. In one embodiment, the overlap section runs horizontally along the recess. In another embodiment, the overlap section runs horizontally within one of the two adjacent housing elements, so that only one of the two adjacent carrier elements extends horizontally along the recess.

In one embodiment, the carrier elements of the lamp elements each form a U-shape with their cross-section running perpendicular to the horizontal direction with a base area and two wall areas extending vertically therefrom. On the one hand, the U-shape enables a particularly robust, torsion-resistant design of the support elements, on the other hand, the support elements can be easily connected, and a robust, smooth mounting surface for mounting light sources and / or operating device components can be provided in a simple manner. Particularly preferably, the base areas of the two carrier elements abut one another in the horizontal overlap section and the wall areas of the two carrier elements run along one another in the horizontal overlap section. This enables a particularly robust, detachable fixation of the two carrier elements to one another. For this purpose, the wall areas of the two carrier elements also particularly preferably rest against one another in the overlapping section. The light sources are particularly preferably arranged on the base regions of the carrier elements. The base areas each have an inside facing the wall areas and an outside facing from the Points away from wall areas. The light sources of the above-explained first light source group of the first luminaire element, which the indirect section comprises, are particularly preferably arranged on the outside of the base region of the first carrier element and the light sources of the above-mentioned second group of light sources are arranged on the inside of the base region of the second carrier element of the second Luminaire element, which comprises the direct section, arranged. In this way, especially when a flat lamp is provided, the distance between the light sources of the second light source group and a light exit opening provided on the underside of the second housing element can be kept as large as possible, so that the light sources of the direct section are for a person in a room on the ceiling the lamp is attached, are as little visible as possible. Particularly preferably, at least the second carrier element is designed to be reflective on the inside of the base area and on the inside of the wall areas facing the base area. This makes a particularly advantageous contribution to directing light to the recess.

Particularly preferred is a first vertical distance between a support section, in particular the base section, the first support element and an optical element forming the top of the lamp at least in sections less than a second vertical distance between a support section, in particular the base section, the second support element and an at least sectionally the Underside of the lamp forming optical element of the lamp, in particular the second distance is at least 1.5 times, in particular at least 2 times the first distance. In one embodiment, light sources of the respective lamp module are arranged on the carrying section of the respective carrier element. As in the previous paragraph explained, which, unlike the present paragraph, relates to the specific arrangement of the light sources on the base area of the respective carrier element, the embodiment described has the particular advantage that the base section of the second carrier element, which is from the direct section to provide the direct -Lighting is included, is spaced as far as possible from the optical element that is visible to a person from the room when the lamp is used as intended, in order to prevent the person from looking at the base section and elements arranged thereon. The inventors have recognized that such a distance between the carrying section or base section of the first carrier element and the optical element forming the top of the lamp is less relevant since this optical element is not intended to be viewed directly by a person from above. Accordingly, this embodiment is particularly advantageous for realizing a visually appealing, flat lamp.

In one embodiment, at least one of the carrier elements runs in the horizontal area of extent of the recess, this carrier element having at least one passage for passing light from the inside of the U-shape of the carrier element to the outside in its wall areas in the horizontal area of extent of the recess. It is particularly preferred that the first and second carrier elements run in the horizontal area of extent of the recess and overlap in this area in the said horizontal overlap section, the wall areas of both carrier elements each having at least one passage and the passages of the two carrier elements being aligned with one another for the passage of light from the Inside the U-shapes of the support elements to the outside. Particularly preferably, such bushings can be on both transverse sides of the Support elements may be provided. The leadthroughs allow light to exit in the transverse direction through the cutout in a particularly advantageous manner, with high stability being ensured at the same time due to the U-shape of the carrier elements and the continuous wall areas which only have at least one leadthrough. For the person skilled in the art, it goes without saying that the term “interior” of the U-shape relates to the area of the U-shape enclosed by the base area and wall area.

In one embodiment, the first carrier element has a first connection side and the second carrier element has a second connection side that corresponds to the first. The releasable fixing of the two carrier elements can be made possible via the two corresponding connection sides. Particularly preferably, a releasable connection between the adjacent carrier elements is established by horizontally sliding the carrier elements into one another, this connection being releasable by horizontally sliding apart. Securing elements, such as screws or latching devices, can preferably be provided which prevent undesired pushing apart and thus loosening of the connection. A modular structure can be implemented particularly easily via the corresponding connection sides. By sliding them horizontally into one another, a particularly reliable and simple connection of two adjacent carrier elements can be made possible.

In one embodiment, the luminaire has an operating device which is arranged horizontally within the indirect section between a section of the underside of the first carrier element and the first housing element. Particularly preferably, a connection cable for connecting the lamp is provided which emerges from the top of the direct section, with an electrical cable connection is provided between the operating device and the connection cable and a further electrical cable connection between the operating device and the at least one direct section connected to the indirect section is provided for supplying light sources arranged in this at least one direct section via the operating device, which is shown in the indirect section is arranged. At this point it should be pointed out again that, in general, particularly preferably, the lamp can have several indirect sections and / or several direct sections, all indirect sections having further support elements and further housing elements with the properties explained for the first support element and first housing element can and all direct sections can have further carrier elements and further housing elements with the properties described for the second carrier element and second housing element and each two adjacent sections or two adjacent lighting elements can be arranged and releasably fixed to one another as explained. Thus, in a particularly preferred embodiment, an indirect section is arranged horizontally between two direct sections, each of the direct sections being electrically connected to the operating device of the indirect section. The provision of the operating device in the indirect section has proven to be particularly advantageous, since a sufficiently large storage space for an operating device can be provided between the underside of the first carrier element and the first housing element, whereas in the direct sections the greatest possible distance between Carrier element and light exit opening and thus only a smaller storage space is provided between the second carrier element and the second housing element, so that a direct view of the light sources of the direct section can be prevented if possible. The exit of the cable from the direct section has proven to be special proved advantageous because then the cable does not interfere with the light emission from the top of the indirect section. The cable is preferably guided within the housing elements of the direct section and indirect section from the direct section to the indirect section.

In one embodiment, the top of the lamp is formed in sections by a first optical element and the underside of the lamp is formed in sections by a second optical element. Both optical elements are particularly preferably designed to be translucent at their transverse edge regions. The edge regions preferably each have an extension of at least 3%, in particular between 3% and 20% of the transverse width of the respective optical element, starting from the respective transverse end, on each transverse side. Particularly preferably, the edge regions of the optical elements extend into the at least one recess provided between the housing elements and cover this recess. As a result, when the light is viewed from the side, a homogeneously diffuse light band can be made visible. The first optical element particularly preferably has a transparency of at least 90% between its transverse edge regions and is designed here for the undirected passage of light. Particularly preferably, the second optical element is likewise designed to be translucent between its transverse edge regions or is designed to effect a predetermined direction of light. For this purpose, the second optical element can have optics known from the prior art, for example prism optics or a film.

In one embodiment, the first optical element protrudes over at least 80% of its horizontal extent, in particular over at least 90% of its horizontal extent over a vertical extent area at least 0.2 cm, in particular at least 0.4 cm vertically beyond the first housing element. In a further embodiment, which can be combined with the aforementioned, the second optical element protrudes over at least 80% of its horizontal extent, in particular over at least 90% of its horizontal extent over a vertical extent of at least 0.2 cm, in particular at least 0.4 cm vertically beyond the second housing element. Because the two optical elements each protrude vertically beyond the housing elements assigned to it, the optical elements can be seen when viewed from the side, since they do not sink into the housing elements, so that when viewed from the side, a light strip running along the horizontal extension of the light is particularly effective can be.

In one embodiment, the first and the second optical element each have a cross-section perpendicular to the horizontal direction, which has a U-shape with a base and side walls extending vertically therefrom, the base of the first optical element in sections forming the top of the lamp and the base second optical element in sections forms the underside of the lamp. The two optical elements are particularly preferably designed and arranged in relation to one another in the luminaire in such a way that they overlap horizontally in the region of the recess and are arranged vertically one above the other, in particular bear against one another vertically. By means of the appropriate design and arrangement of the optical elements, the covering of light exit openings on the top and bottom of the lamp and the covering of the recess can be ensured at the same time in a particularly simple and expedient manner. The first housing element particularly preferably engages behind the first optical element on its upper side in order to hold the first optical element. This is particularly preferred second housing element, the second optical element on its underside for holding the second optical element. It is particularly preferable for reaching behind on both transverse sides of the respective optical elements. The first optical element is particularly preferably supported relative to the first carrier element or relative to the first housing element via a first support which presses the first optical element against the grip provided by the first housing element. The second optical element is particularly preferably supported on the second carrier element or the second housing element via a second support, via which the second optical element is pressed against the grip provided by the second housing element.

In general, it should be pointed out again at this point that the lamp preferably has several indirect sections and / or several direct sections. Each indirect section can have a lighting element with the properties as explained for the first lighting element and thus a carrier element, housing element and optical element assigned to it, which has properties as described for the first carrier element, the first housing element and the first optical element. Correspondingly, each direct section can have a lighting element which has a carrier element, housing element and optical element assigned to it, which has properties as explained for the second carrier element, second housing element and second optical element. The lamp particularly preferably has at least two direct sections, the indirect section being arranged horizontally between the direct sections. Of course, the lamp can also have further indirect sections on the outside of the one indirect section. In one embodiment, the two direct sections each have an asymmetrical emission characteristic. In one embodiment, the two direct sections each have a symmetrical radiation pattern. Glare-free radiation directly into the room can be particularly preferably made possible via the asymmetrical radiation characteristic, since the asymmetrical radiation allows light to be emitted from both sides below the indirect section, which can then be arranged above a workstation, for example. In one embodiment, the luminaire comprises at least two indirect sections, the direct section being arranged horizontally between the two indirect sections. Of course, the lamp can also have further direct sections on the outside of the one direct section.

In one embodiment, the indirect section has an interface for mounting one of the direct sections on its two opposite horizontal sides, each of the two direct sections on one of its horizontal sides being one to one of the two interfaces of the indirect section Has a corresponding interface and on its horizontally opposite side has a lamp closure element or another interface corresponding to one of the interfaces of the indirect section. Such an interface of the indirect section can comprise, for example, a first connection side of the first carrier element as explained above. Such an interface or further interface of a direct section can, for example, comprise a second connection side of a second carrier element which, as explained above, corresponds to the first connection side. Such interfaces can also include electrical plug connections that correspond to one another. By providing appropriate interfaces, a modular structure of a lamp and thus the implementation of a lamp with any number of direct and / or indirect sections can be particularly simple and be made inexpensive. For this purpose, the two interfaces of the indirect section are particularly preferably designed identically and the two interfaces, and in particular the two further interfaces, of the two direct sections are designed identically, so that the direct sections are each identical to the respective interfaces of the indirect section. Section can be coupled, and in particular another indirect section constructed identically to the first indirect section can be coupled to a further interface of one of the two direct sections. The two direct sections can thus each be mounted in an identical manner on the indirect section and in particular be electrically connected to it. Particularly preferably, all of the direct sections and all of the indirect sections of the lamp according to the invention, especially when a plurality of indirect sections and a plurality of direct sections are provided, have the properties mentioned.

In one embodiment, the first and the second housing element, in particular the housing elements of all indirect and direct sections, have an identical cross section. In this way, the production of a lamp can be particularly advantageous. In one embodiment that can be combined with the aforementioned, the first carrier element and the second carrier element, in particular all carrier elements of all direct and indirect sections, have an essentially identical cross section and differ only in their transverse width so that they can be pushed into one another are. In one embodiment, the optical elements of all direct and indirect sections have essentially the same cross section and differ only in their vertical end regions with which they rest against one another, with in particular the vertical end regions of the optical element of the at least one direct section being designed to correspond to the vertical End regions of the optical element of the at least one indirect section. In this way, too, the production of a lamp according to the invention can be particularly advantageous.

In one embodiment, at least the second carrier element of the direct section, in particular the carrier elements of all direct sections, is attached to the second housing element, in particular to the housing elements of the respective direct sections, via at least one holder. The mounts can be implemented, for example, as a separate element, for example as a Z-angle or as a square tube, or by a correspondingly shaped section of the respective carrier element itself. The brackets preferably rest on the inside of the respective housing element. The holder is preferably arranged on the upper side of the respective carrier element, preferably on the side of the carrier element facing away from the light sources of the respective section. A hole is preferably provided in the second housing element or in the housing element assigned to the respective carrier element at the level of the at least one holder, so that the holder is accessible from the outside, so that for mounting the lamp on a ceiling the fastening of the lamp via the at least one holder can take place, whereby the most robust possible assembly can be made possible. Particularly preferably, a fastening element is arranged on the outside of the housing and is fastened to the holder arranged in the housing, which is designed for mounting the lamp on a ceiling. For example, such a fastening element can be designed as a hook or as a piece of sheet metal pressed against the outside of the housing, wherein a wire can be guided between the sheet metal piece and the housing, via which the lamp can be hung on a ceiling. The at least one holder particularly preferably has a cable feed-through, so that a cable along the horizontal line through the holder can run through. This is particularly advantageous for wiring the various sections. The various horizontal sections of the lamp are particularly preferably electrically connected to one another via a cable, the cable running between the housing elements and the carrier elements and on the side of the carrier elements facing away from the light sources. Thus, in one embodiment, light sources are arranged on the upper side of the first carrier element and light sources are arranged on the lower side of the second carrier element, the cable running between the lower side of the first carrier element and the first housing element and between the upper side of the second carrier element and the second housing element.

The invention further relates to a set according to claim 16 comprising at least two lighting elements for realizing a lighting fixture according to the invention. A first of the lamp elements comprises the first carrier element and the first housing element of the lamp, which are firmly connected to one another. A second of the lamp elements comprises the second carrier element and the second housing element of the lamp, which are firmly connected to one another. The two luminaire elements can be releasably fixed to one another via their carrier elements to form a lamp that the carrier of the lamp is formed from the carrier elements and the housing of the lamp is formed from the housing elements, with light sources being arranged on the carrier and / or the housing and are partially enclosed by the housing perpendicular to the horizontal direction and this enclosing is interrupted by light exit openings that are provided in the housing, and that the lamp has a housing with a recess between the two housing elements from the top to the bottom of the lamp runs vertically and the first lamp element has a first horizontal section of the lamp for providing indirect lighting Room and in which the second luminaire element forms a second horizontal section of the luminaire for providing direct lighting of a room, the recess on the underside in one of the light exit openings provided in the second horizontal section of the luminaire and on the top in one in the first horizontal section the light provided the light exit openings opens. The two lamp elements can have further advantageous properties, which are explained above in connection with a lamp according to the invention.

The invention also relates to a method according to claim 17 for producing a horizontally elongated lamp. In a first method step, a first housing element is connected in a fixed position to a first carrier element to produce a first lamp element and a second housing element is connected to a second carrier element to produce a second lamp element. The housing elements of the lamp elements are arranged relative to the carrier elements of the lamp elements in such a way that the housing elements of the lamp elements enclose the carrier elements of the respective lamp elements at least in sections perpendicular to the horizontal direction. In a second process step, the two lamp elements are connected to each other at their horizontal ends via their carrier elements so that a lamp is realized whose carrier is formed within the horizontal extension of the two lamp elements by the carrier elements and whose housing is within the horizontal extension of the two lamp elements is formed by the housing elements and has a recess between the two housing elements, which runs from an upper side of the lamp to a lower side of the lamp, wherein light sources are arranged on the carrier and / or the housing and from the housing perpendicular to horizontal direction are enclosed in sections, this enclosing is interrupted by light exit openings which are provided in the housing, the first luminaire element forming an indirect section for radiating light from the top of the luminaire to provide indirect room lighting and the second luminaire element forming a Direct section for radiating light from an underside of the luminaire vertically opposite the top to provide direct room lighting and wherein the recess on the underside into one of the light exit openings provided in the direct section and on the top into one in the indirect section provided the light exit openings opens. Particularly preferably, in the first method step, the housing elements and the carrier elements are each formed from sheet metal by reshaping. Particularly preferably, a sheet metal with a thickness of less than 1 mm, in particular less than 0.8 mm, is used for realizing the housing elements and / or the carrier elements. Correspondingly, in the luminaire produced, the housing elements and / or the carrier elements have wall thicknesses of less than 1 mm, in particular less than 0.8 mm.

The housing elements and the carrier elements are particularly preferably formed from sheet metal with the same thickness. The lighting elements are particularly preferably connected to one another in the second method step in that their carrier elements are pushed horizontally into one another over a horizontal overlap section. Particularly preferably, a first optical element is inserted horizontally into the first housing element during the first method step in order to realize the first light element, with a second optical element being inserted horizontally into the second housing element starting from the side of the second light element facing away from the first light element becomes. The method according to the invention can have further advantages and properties which are obvious to the person skilled in the art in connection with the above statements on a lamp according to the invention and a set according to the invention.

Figur 1:

in einer schematischen Prinzipdarstellung eine Aufsicht auf eine Ausführungsform einer erfindungsgemäßen Leuchte;

Figur 2:

in schematischen Prinzipdarstellungen eine Aufsicht auf Bestandteile der Leuchte gemäß Figur 1;

Figur 3:

in schematischen Prinzipdarstellungen eine Aufsicht auf Bestandteile der Leuchte gemäß Figur 1;

Figur 4:

in schematischen Prinzipdarstellungen eine Aufsicht auf Bestandteile der Leuchte gemäß Figur 1;

Figur 5:

in schematischen Prinzipdarstellungen eine Aufsicht auf Bestandteile der Leuchte gemäß Figur 1;

Figur 6:

in schematischen Prinzipdarstellungen eine Aufsicht auf Bestandteile der Leuchte gemäß Figur 1;

Figur 7:

in schematischen Prinzipdarstellungen eine Aufsicht auf Bestandteile der Leuchte gemäß Figur 1.

The invention is explained in more detail below with reference to seven figures using an exemplary embodiment. Show it:

Figure 1:

in a schematic principle illustration, a plan view of an embodiment of a lamp according to the invention;

Figure 2:

a plan view of components of the lamp according to FIG Figure 1 ;

Figure 3:

a plan view of components of the lamp according to FIG Figure 1 ;

Figure 4:

a plan view of components of the lamp according to FIG Figure 1 ;

Figure 5:

a plan view of components of the lamp according to FIG Figure 1 ;

Figure 6:

a plan view of components of the lamp according to FIG Figure 1 ;

Figure 7:

a plan view of components of the lamp according to FIG Figure 1 .

In Figure 1 a plan view of an embodiment of a lamp 1 according to the invention is shown schematically in a schematic diagram. In Figure 1 the horizontal direction X, the transverse direction Y and the vertical direction Z are also shown. The lamp 1 according to the invention shown has an indirect section 2 which is arranged horizontally between two direct sections 3 and is connected to them. The direct sections 3 are each designed identically and each have a second housing element 31 and a second optical element 32. The indirect section 2 has a first housing element 21 and a second optical element 32. The indirect section 2 also has an interface on each of its two opposite horizontal sides for mounting one of the two direct sections 3. The two interfaces of the indirect section 2 are identical. Each of the two Direct sections 3 has an interface on one of its horizontal sides, which is designed to correspond to the interfaces of indirect section 2. In addition, each direct section 3 has a lamp closure element 34 on its horizontal side opposite its respective interface, the horizontal ends of the lamp 1 being fixed via the lamp closure elements 34 of the two direct sections 3. In Figure 1 the lamp 1 is shown with its bottom 12 facing up and its top 11 facing down. At this point it should be pointed out that in the embodiment described here, the indirect section 2 consists of the first light element and the direct sections 3 each consist of a second light element. In the exemplary embodiment described, the term “indirect section” is to be equated with the term “first lighting element” and the term “direct section” with the term “second lighting element”.

In Figure 2 are from the in Figure 1 The lamp 1 shown only shows the optical elements 22, 32, but in their arrangement as in the lamp 1 according to FIG Figure 1 occurs. In Figure 2a a plan view of all three optical elements 22, 32 is shown in FIG Figure 2b is an enlarged section of the Figure 2a shown. Out Figure 2 comprehensive the Figures 2a and 2 B it can be seen that the optical elements 22, 32 each have a cross section perpendicular to the horizontal direction X, which has a U-shape with a base and side walls extending vertically therefrom. The bottom of the first optical element 22 forms a portion of the top 11 of the lamp 1, and the bottom of the second optical element 32 forms a portion of the bottom 12 of the lamp 1. The second optical elements 32 each horizontally overlap the first optical element 22 and in a horizontal area lie vertically in this area on the first optical element 22. This area lies in the area of the recess 100, which is in particular in the Figures 3 and 5 can be seen particularly well. The second optical elements 32 each have an identical cross section perpendicular to the horizontal direction X and a cross section which is essentially identical to the cross section of the first optical element 22. The cross sections of the first optical element 22 and the second optical element 32 differ only in the vertical end regions of their side walls. This is because the vertical end regions of the first optical element 22 are designed to correspond to the vertical end regions of the second optical elements 32. This is particularly good Figure 2b recognizable. In Figure 2b it can be seen that the first optical element 22 has a first step shape 220 at its vertical end sections, which corresponds to a second step shape 320 which is formed by the second optical elements 32. These step shapes ensure, on the one hand, reliable guidance of the optical elements 22, 32 relative to one another and, on the other hand, prevent dirt from entering from the outside between the optical elements 22, 32 and into the interior of the lamp 1 as far as possible.

In Figure 3 are the first housing element 21 and the second housing elements 31 of the lamp 1 according to Figure 1 independent of the other components of the lamp 1, but in their arrangement according to Figure 1 shown. Out Figure 3 it can be seen that a second housing element is horizontally spaced from the first housing element 21 via a recess 100 and that this recess 100 opens into a light exit opening on the top 11 of the lamp 1, which is surrounded by the indirect section 2 and on the underside 12 of the lamp 1 opens into a light exit opening which is encompassed by the respective direct section 3. It is also off Figure 3 recognizable, that the housing elements 21, 31 each have an identical cross section. In addition, it can be seen that these housing elements 21, 31 each form a rear grip via which, in particular, from Figure 7 recognizable, the optical elements 22, 32 are engaged behind and thus held.

In Figure 4 the first carrier element 23 of the indirect section 2 and the second carrier elements 33 of the direct sections 3 together with circuit boards 6 with LEDs 7 arranged on the first carrier element 23 and brackets 5 arranged on the second carrier elements 33 as components of the lamp 1 according to Figure 1 shown. This representation takes place independently of the other components of the lamp 1, but in the arrangement according to FIG Figure 1 .

In Figure 5 a plan view of a transition area between a first housing element 21 and a second housing element 31 as well as a first carrier element 23 and a second carrier element 33 is shown, likewise independent of further components of the lamp 1, but in the arrangement according to FIG Figure 1 .

In Figure 6 a transition between the first carrier element 23 and a second carrier element 33 with electronic components arranged thereon, namely plug connections 9, EVG 8, circuit board 6 and LEDs 7, is shown. The Figures 4 to 6 are explained below in their synopsis.

From the Figures 4 to 6 it can be clearly seen that the carrier elements 23, 33 each have a cross-section that forms a U-shape. This U-shape each has a base area and two wall areas extending vertically therefrom. Each of the second carrier elements 33 is in the over a horizontal overlap portion first carrier element 23 is inserted and in this horizontal overlap section rests with its base region on the base region of the first carrier element 23 and with its wall regions on the wall regions of the first carrier element 23. In both transversely opposite wall areas of all the carrier elements 23, 33, passages 4 are provided in the respective overlapping section. The feedthroughs 4 of the first carrier element 23 are arranged in alignment with the feedthroughs 4 of the second carrier elements 33. This enables how in particular out Figure 5 to see that light from the inside of the U-shape, which is formed by the carrier elements 23, 33, can pass through the feed-throughs 4 to the recess 100 and through this to the outside. It can also be seen that in the luminaire 1, circuit boards 6 with LEDs 7 are arranged on the outside of the base region of the first carrier element 23, whereas circuit boards 6 with LEDs 7 are arranged on the inner side of the base regions of the second carrier elements 33. As explained above, this enables the vertical distance between the LEDs 7, which are arranged on the second carrier elements 33, and the second optical elements 32 to be greater than the vertical distance between the LEDs 7 and arranged on the first carrier element 23 the first optical element 22 is provided. The second carrier elements 33 are firmly fixed to the second housing elements 31 via the holders 5. In addition, the spacing between the base region of the first carrier element 23 and the first optical element 22 is also defined via the holders 5. On the inside of the base region of the first carrier element 23 there is also an EVG 8 (electronic ballast) and further components of an operating device that are not explained further here because they are sufficiently known to the person skilled in the art. It is also particularly off Figure 6 to see that at the horizontal ends of the first carrier element 23 a electrical plug connection 9 is provided which corresponds to a plug connection 9 which is arranged on the horizontal end of the second support element 33 facing it. Correspondingly, the LEDs 7 of the direct sections 3 can be electrically supplied via the operating device, in particular the electronic ballast 8, which is arranged on the first carrier element 23.

In Figure 7 a cross section through a direct section 3 is shown. From this cross section it can be seen that the upper side 11 of the lamp 1 is formed at least in sections by the second housing element 31 and that the second carrier element 33 is firmly connected to the second housing element 31 via brackets 5. The second optical element 32 is prevented from sliding vertically out of the second housing element 31 by a grip behind. On the inside of the base area of the second carrier element 33 is a circuit board 6 with LEDs 7, which - as can be seen - are arranged at a distance from the second optical element 32, so that a direct view of the LEDs 7 when the lamp 1 according to the invention is installed as intended Possibility is prevented.

List of reference symbols

1

lamp

2

Indirect section

3

Direct section

4th

execution

5

bracket

6

circuit board

7th

LED

8th

EVG

9

Connector

11

Top of the lamp

12

Underside of the lamp

21st

first housing element of the indirect section

22nd

first optical element of the indirect section

23

first support element of the indirect section

31

second housing element of the direct section

32

second optical element of the direct section

33

second support element of the direct section

34

Luminaire cover element

100

Recess

220

first step form

230

second step form

X

horizontal direction

Y

transverse direction

Z

vertical direction

Claims (18)

1. Horizontally elongate lamp (1) comprising at least one horizontally extending indirect section (2) for radiating light from an upper side (11) of the lamp (1) to provide indirect room lighting, and at least one horizontally extending direct section (3) arranged horizontally beside the indirect section (2) for radiating light from an underside (12) of the lamp (1) vertically opposite to the upper side (11) to provide direct room lighting, wherein the lamp (1) has a holder and also a horizontally elongate housing enclosing the holder at least in sections perpendicular to the horizontal direction, wherein light sources (7) are disposed on the holder and/or on the housing and are enclosed in sections by the housing perpendicular to the horizontal direction, wherein this enclosing is interrupted by light exit openings provided in the housing, wherein the housing is composed of several housing elements (21, 31) and the holder is composed of several holder elements (23, 33), wherein the indirect section (2) has a first housing element (21) and a first holder element (23) rigidly connected to each other to form a first lamp element, and wherein the direct section (3) has a second housing element (31) and second holder element (33) rigidly connected to each other to form a second lamp element, wherein both lamp elements are detachably fixed to each other via their holder elements (23, 33),
   characterized in that
   housing has a recess (100) between the two housing elements (21, 31) which vertically extends from the upper side (11) to the underside (12) of the lamp (1) to ensure a transverse radiation of light in a transverse direction (Y) perpendicular to the horizontal direction (X) and to the vertical direction (Z), wherein the recess (100) on the underside leads into one of the light exit openings provided in the direct section and on the upper side into one of the light exit openings provided in the indirect section, wherein in particular the first and the second holder element (23, 33) overlap in a horizontal portion and are attached to each other in this horizontal overlapping portion.
2. Lamp (1) according to claim 1,
   characterized in that
   the lamp (1) has a vertical extension of less than 5 cm, in particular less than 4 cm, and/or a ratio between its transverse extension and its vertical extension of more than 2, in particular more than 2.5, over at least 90% of its horizontal extension, and/or that the lamp is designed in such a way that when its maximum radiation intensity is set, it has a distribution of the radiated light intensity such that at least 70% of the light intensity radiated from the lamp (1) get exclusively into a first half space located on the upper side (11) of the lamp (1).
3. Lamp (1) according to any of the preceding claims,
   characterized in that
   the housing has, at least in sections thereof, a cross section perpendicular to the horizontal direction (X), which cross section has a U-shape with a base portion and an opposite open end in a vertical direction, wherein the holder is arranged within the U-shape of the housing, wherein in particular said holder extends continuously horizontally over at least 90% of the horizontal extension of the lamp (1).
4. Lamp (1) according to any of the preceding claims,
   characterized in that
   the lamp (1) comprises a first group of light sources (7) which are arranged exclusively on an upper side of the first holder element (23) of the indirect section (2), and a second group of light sources (7) which are arranged exclusively on an underside of the second holder element (33) of the direct section (3), wherein in particular both groups of light sources (7) can be switched and/or dimmed independently of each other.
5. Lamp (1) according to any of the preceding claims,
   characterized in that
   the holder elements (23, 33), each with its cross-section perpendicular to the horizontal direction (X), form a U-shape with a base portion and two wall portions extending vertically away from said base portion, wherein in particular the base
   portions of the two holder elements (23, 33) abut one another in the horizontal overlapping portion, and the wall portions of the two holder elements (23, 33) run along each other, in particular abut one another.
6. Lamp (1) according to claim 5,
   characterized in that
   at least one of the holder elements (23, 33) runs in the horizontal extension portion of the recess (100), wherein this holder element (23, 33) has at least one passage (4) in the horizontal extension portion of the recess (100) for light to pass from the interior of the U-shape of the holder elements (23, 33) to the outside, wherein in particular the wall areas of both holder elements (23, 33) each have at least one passage (4) and wherein the passages (4) of the holder elements (23, 33) are aligned with one another.
7. Lamp (1) according to any of the preceding claims,
   characterized in that
   a first vertical distance between a holding portion of the first holder element (23) and an optical element (22) forming the upper side (11) of the lamp (1) at least in sections is smaller than a second vertical distance between the holding portion of the second holder element (33) and optical element (32) of the lamp (1) forming the underside (12) of the lamp (1) at least in sections, wherein in particular the second distance is 1.5 times, in particular at least 2 times the first distance.
8. Lamp (1) according to any of the preceding claims,
   characterized in that
   the first holder element (23) has a first connection side and the second holder element (33) has a second connection side corresponding to the first connection side, wherein in particular a detachable connection between the holder elements (23, 33) is created by horizontally telescoping the holder elements (23, 33) into one other, and wherein this connection can be released by horizontally moving the elements apart.
9. Lamp (1) according to any of the preceding claims,
   characterized in that
   an operating device in the indirect section (2) is disposed between a portion of the underside of the first holder element (23) and the first housing element (21) and, in particular, that a connection cable for connecting the lamp (1) exits from the upper side of the direct section (3), wherein an electrical cable connection (9) is provided between the operating device and the at least one direct section (3) connected to the indirect section (2) to supply light sources disposed in said at least one direct section (3).
10. Lamp (1) according to any of the preceding claims,
    characterized in that
    the upper side (11) of the lamp (1) is formed in sections by a first optical element (22) and the underside (12) of the lamp (1) is formed in sections by a second optical element (32), wherein in particular both optical elements (22, 32) are designed translucent in their transverse rim portions, wherein in particular the first optical element (22) has a transparency of at least 90% between its transverse rim portions and is designed for allowing light to pass in a non-directional manner and the second optical element (32) is translucent between its transverse rim portions or is designed for causing a predetermined light guiding.
11. Lamp (1) according to claim 10,
    characterized in that
    the first optical element (22) projects vertically beyond the first housing element (21) over at least 80% of its horizontal extension, in particular over more than 90% of its horizontal extension, over a vertical extension region of at least 0.2 cm, in particular at least 0.4 cm, and/or the second optical element (32) projects vertically beyond the second housing element (31) over at least 80% of its horizontal extension, in particular over more than 90% of its horizontal extension, over a vertical extension range of at least 0.2 cm, in particular at least 0.4 cm.
12. Lamp (1) according to any of claims 10 or 11,
    characterized in that
    the first and the second optical element (22, 32) each have a cross section perpendicular to the horizontal direction (X) which has a U-shape with a bottom and with two lateral walls extending vertically away from the bottom, wherein the bottom of the first optical element (22) forms in sections the upper side (11) of the lamp (1) and wherein the bottom of the second optical element (32) forms in sections the underside (12) of the lamp, wherein in particular the two optical elements (22, 32) horizontally overlap in the region of the recess (100) and are arranged vertically above each other, in particular abut one another vertically.
13. Lamp (1) according to any of claims 10 to 12,
    characterized in that
    the first housing element (21) engages behind the first optical element (22) on its upper side to hold the first optical element and that the second housing element (31) engages behind the second optical element (32) on its underside to hold the second optical element (32).
14. Lamp (1) according to any of the preceding claims,
    characterized in that
    the lamp (1) has at least two direct sections (3), with the indirect section (2) being arranged horizontally between the direct sections (3)
    and/or
    that the lamp (1) hast at least two indirect sections (2), with the direct section (3) being arranged horizontally between the indirect sections (2),
    wherein in particular the indirect section (2) has a respective interface for mounting one of the direct sections (3) on both of its horizontally opposing sides, wherein each of the two direct sections (3) has an interface corresponding to one of the two interfaces of the indirection section (2) on one of its horizontal sides and a lamp closing element (34) or a further interface corresponding to one of the interfaces of the indirect section (2) on its horizontally opposite side, wherein in particular the two interfaces of the indirect section (2) are identically formed and the two interfaces of the two direct sections (3) are identically formed.
15. Lamp (1) according to any of the preceding claims,
    characterized in that
    the first and the second housing element (21, 31) have an identical cross section and/or that the first and the second optical element (22, 32) have an identical cross section, except of their vertical end regions.
16. Set comprising at least two lamp elements (2, 3) to create a lamp (1) according to any of the preceding claims,
    characterized in that
    a first one of the lamp elements (2) comprises the first holder element (23) and the first housing element (21), which are rigidly fixed to one another, and a second one of the lamp elements (3) comprises the second holder element (33) and the second housing element (31), which are rigidly fixed to one another, wherein the two lamp elements (2, 3) can be detachably fixed to one another via their holder elements (23, 33) while forming the lamp (1) the holder (7) of which is made up of the holder elements (23, 33) of the two lamp elements (2, 3) and the housing of which is made up of the housing elements (21, 31) of the two lamp elements (2, 3), wherein light sources (7) are arranged on the holder and/or on the housing and are enclosed in sections by the housing perpendicular to the horizontal direction, this enclosing being interrupted by light exit openings provided in the housing, and wherein the housing has a recess (100) which extends vertically between the two housing elements (21, 31) from the upper side (11) to the underside (12) of the lamp (1), the first lamp element (2) forming a first horizontal portion of the lamp (1) to provide indirect lighting of a room and the second lamp element (3) forming a second horizontal portion of the lamp (1) to provide direct lighting of a room, wherein the recess (100) on the underside leads into one of the light exit openings provided in the second horizontal portion of the lamp (1) and on the upper side leads into one of the light exit openings provided in the first horizontal portion of the lamp (1).
17. Method for manufacturing a horizontally elongate lamp (1), wherein in a first step of the method, a first housing element (21) is connected fixed in position to a first holder element (23) to create a first lamp element (2), and a second housing element (31) is connected to the second holder element (33) to create a second lamp element (3), wherein the housing elements (21, 31) of the lamp elements (2, 3) enclose the holder elements (23, 33) of the respective lamp elements (2, 3) perpendicular to the horizontal direction (X) at least in sections, wherein in a second step of the method, the two lamp elements (2, 3) are connected to each other at their horizontal ends via their holder elements (23, 33) in such a way that a lamp (1) is created the holder of which is formed by the holder elements (22, 33) within the horizontal extension of two lamp elements (2, 3) and has a recess (100) between the two housing elements (21, 31) which extends from an upper side (11) of the lamp (1) to an underside (12) of the lamp (1), wherein the light sources (7) are arranged on the holder and/or on the housing and are enclosed in sections by the housing perpendicular to the horizontal direction, wherein this enclosing is interrupted by light exit openings provided in the housing, wherein the first lamp element (2) forms an indirect section (2) to radiate light form the upper side (11) of the lamp (1) for providing indirect room lighting and wherein the second lamp element (3) forms a direct section (3) to radiate light from an underside (12) of the lamp (1) vertically opposite to the upper side (11) to provide direct room lighting and wherein the recess (100) on the underside leads into one of the light exit openings provided in the direct section and on the upper side into one of the light exit openings provided in the indirect section, wherein in particular the lamp elements (2, 3) are connected to each other by telescoping their holder portions horizontally into one another beyond an overlapping portion.
18. Method according to claim 17,
    characterized in that
    during the first step of the method, a first optical element (22) is inserted horizontally into the first housing element (21) to create the first lamp element (2) and that after completion of the second step of the method, a second optical element (32) is inserted horizontally into the second housing element (31), starting from the side of the second lamp element (3) turned away from the first lamp element (2).

Images