DE202022103499U1 - Elongated lighting unit and ceiling system equipped with it - Google Patents

Abstract

Elongated lamp unit (1) having:
an elongated lamp housing (2) which extends along a longitudinal axis (X), the lamp housing (2) being integrally formed and having:
• a bottom wall (3) extending along the longitudinal axis (X), and
• Seen in the direction of the longitudinal axis (X), on both sides of the longitudinal axis (X) away from the bottom wall (3) to the same side and also side walls (4) extending along the longitudinal axis (X), which together with the bottom wall (3). Limit interior space (I),
a carrier (6) which is arranged in the interior (I), the carrier (6) having a support wall (60) which extends flatly along the longitudinal axis (X) and which has a flat front side (61) facing the bottom wall (3). ) for arranging a light source (5),
a spacer element (7), which carries the support wall (60) offset parallel to the base wall (3) in the interior (I), so that a lamp space (L) for receiving the lamp (5) between the support wall (60) and the base wall (3) is formed,
wherein the spacer element (7) on the lamp housing side is connected only to the base wall (3),
wherein the side walls (4) each have a latching section (40) for latching fastening of the lamp unit (1) to a corresponding support element (101), and
wherein the lamp housing (2) is designed in such a way that the locking sections (40) can be moved from their rest position into a locking position by elastic deflection of the side walls (4) transversely to the longitudinal axis (X).

Description

The present invention relates to an elongated or linear lighting unit and a ceiling system equipped therewith.

Elongated or linear lighting units are basically known from the prior art. These usually have an elongated lamp housing in which the corresponding lamp components are housed. The lamp housing is usually designed to be rigid. To attach corresponding linear lighting units, these usually have additional holding sections, often provided on the outside, via which the lighting unit can then be attached to a ceiling of a room with a support element, for example.

Ceiling systems are also known from the prior art, which have numerous ceiling panels that are generally aligned parallel to one another, for cooling purposes, for example. In order to integrate lighting into such ceiling systems, it is usually attached to or between the panels using fastening profiles provided on the lamp housing.

It is now an object of the present invention to provide an elongated or linear lighting unit and a ceiling system with the same, which are easy to attach and aesthetically pleasing.

This task is solved by the subject matter of the independent claims. The dependent claims further develop the central idea of the present invention in a particularly advantageous manner.

According to a first aspect, the present invention relates to an elongated - preferably a linear - lamp unit (hereinafter also simply referred to as a “lamp unit”). This has an elongated lamp housing which extends along a longitudinal axis. The longitudinal axis can extend any length; For example, with a linear lighting unit, straight. The lamp housing is integrally formed. The lamp housing has a bottom wall extending along the longitudinal axis. The lamp housing also has side walls on both sides of the longitudinal axis, viewed in the direction of the longitudinal axis, away from the bottom wall to the same side and also side walls extending along the longitudinal axis. The side walls, together with the bottom wall, delimit an interior space. The lighting unit further has a carrier which is arranged in the interior. The carrier in turn has a support wall that extends flatly along the longitudinal axis. The supporting wall has a flat front facing the bottom wall for arranging (at least) one light source - preferably an LED light source. Furthermore, the lamp unit has a spacer element which carries the support wall offset parallel to the base wall in the interior, so that a lamp space for receiving the lamp is formed between the support wall and the base wall. The distance element is only connected to the base wall on the luminaire housing side. There is therefore no direct connection of the spacer element to the side walls, except on the lamp housing side via the bottom wall which is integrally formed with the side walls. Consequently, the carrier is only connected to the lamp housing via the bottom wall. The side walls each have a latching section for latching fastening of the lighting unit to a corresponding support element. The lamp housing is designed in such a way that the locking sections can be moved from their rest position into a locking position by elastic deflection of the side walls transversely to the longitudinal axis; are therefore elastically movable in such a way that the locking sections automatically move back from the locking position to their rest position after a deflection force has been removed.

The elongated or linear lamp unit according to the present invention makes it possible for a carrier intended to carry the lamp to be connected (physically/mechanically) to the lamp housing only via the base wall. In this way, the side walls are free to be able to carry out a corresponding elastic deflection movement to achieve a locking function. The side walls equipped with the locking sections can thus be provided as a lock in a particularly simple, compact and inexpensive manner. Since the carrier is not directly mechanically connected to the side walls by means of the spacer element, the elastic deflection of the side walls required for the locking function does not affect the carrying function of the carrier. This means that assembly can be carried out particularly quickly and easily. Since no additional mounting brackets are provided, the manufacturing costs of the linear lighting unit described are comparatively low. In addition, the aesthetic appearance of the linear lighting unit is particularly attractive and high thanks to the integration of the mechanical fastening - namely the side walls including the locking sections. Since the carrier or its supporting wall is/are provided elevated above the spacer elements in the interior, the lamp space can be provided for effective and compact but safe accommodation of the lamp(s).

The supporting wall preferably completely spans the interior space between the side walls. The carrier can therefore provide a maximum area for holding components such as the lamps or other lighting components.

The supporting wall preferably extends parallel to a plane. This means that a stable, large but at the same time compact supporting wall can be provided.

The flat front preferably extends in one plane. Consequently, a flat surface can be provided for the arrangement and preferably flat support of lighting devices. This in turn enables good heat management by providing a preferably large surface support for lamps to enable good heat dissipation from the lamps during operation.

The carrier preferably has outer walls or side webs that extend towards the same side and more preferably perpendicularly away from the supporting wall on one side or preferably on both sides of the longitudinal axis, viewed in the direction of the longitudinal axis. In this way, the carrier can be made particularly stable overall. In this way, when viewed in cross-section in the direction of the longitudinal axis, the carrier preferably has a type of V-shape or more preferably a U-shape, and can therefore be made particularly torsionally rigid.

Furthermore, the term “outer walls” or “side bars” is usually spoken of, although this usually means only a single “outer wall” or just a single “side bar”. However, the version with two outer walls is preferred.

The outer walls or side webs preferably extend along the longitudinal axis in order to define a fastening space together with the supporting wall. In this way, for example, fasteners for lamps or other lamp components can be easily accommodated or protrude into this fastening space without colliding with other fasteners or even lamp components or the lamps.

The outer walls or side webs preferably extend from the supporting wall in a direction away from the bottom wall. The fastening space can thus be provided on a side of the carrier facing away from the bottom wall or the lighting space, where additional lighting components are often provided or fastening means are arranged or protrude. In addition, the fastening space is provided in a position that is easily accessible during assembly, which in turn enables simple and safe assembly.

The outer walls or side webs are preferably aligned parallel to the side walls, so that an overall compact design, with a stable support and maximum use of space, can be achieved.

In a preferred embodiment, the outer walls or side webs can lie flat against the side walls in the rest position - preferably in one plane. Thus, in the rest position - i.e. a fastening position of the lamp unit - the lamp unit as a whole can be provided in a very stable manner. The outer walls or side webs can also provide, for example, a stop for the side walls with elastic return from the latching position to the rest position.

The outer walls or side webs preferably have sections of different heights extending away from the supporting wall along the longitudinal axis. The carrier can therefore be provided in a space-optimized manner overall. The sections of different heights can also provide defined functional sections if required.

A transition between adjacent sections of different heights can preferably be formed abruptly along the longitudinal axis. Thus, if necessary, axial stop positions viewed with respect to the longitudinal axis can be provided integrally in the carrier, which can serve, for example, as a stop for lighting components to be fastened to the carrier.

Preferably, a section of low height is limited to one or two adjacent sections of greater height. In this way, defined areas can be provided, for example for accommodating lamp components, with stop areas seen in the axial direction.

The carrier can preferably have a component support section formed integrally with the support wall for fastening lamp components. The component support section is preferably arranged in an operating position parallel to the support wall and offset away from the bottom wall in the interior. In this way, additional components can be easily positioned and attached via the carrier. Due to the offset arrangement, the fastening space can also be used to accommodate (parts of) fasteners - such as screws - for fastening corresponding lamp components via the component support section, in order to effectively prevent collisions with other fasteners or Even lighting components or lamps can be safely avoided.

The component support section is preferably provided in the area of the low height section. In this way, a lamp component attached to the component support section can, for example, rest on the low-height section of the outer walls or side webs and be positioned axially relative to sections of greater height and thus positioned along the longitudinal axis. Thus, numerous functional sections can be provided in a simple and cost-effective but effective manner using the carrier.

The component support section is preferably formed on an end face of at least one of the outer walls or side webs that is distal with respect to the support wall. Thus, when a lamp component is attached via the component support section, the lamp component can rest, for example, on the corresponding distal end face of the outer wall or the side bar, in order to provide a secure and stable support for the lamp component attached to the component support section.

The component support section is preferably formed integrally with the support wall or one of the outer walls or side webs, so that the component support section can be transferred into the operating position by plastic bending from a release position in which a rear side of the support wall facing away from the bottom wall is exposed. By providing the component support section in the release position, access to the carrier and, for example, to the fastening space in an assembly situation is simplified, for example in order to provide a corresponding lighting means on the opposite (front) side of the carrier. By simply bending the component support section into the operating position, the component support section can then be made available - i.e. aligned in a defined manner - for attaching further lamp components. This can be done, for example, by a fitter in a simple manner by hand on the assembly line by bending or pressing down the component support section.

In a preferred embodiment, the component support section has a hole pattern for fastening elements, such as screws. This means that assembly can be simplified even further. In addition, the mounting positions for fasteners can be provided in a defined manner in this way, which reduces the risk of incorrect installation.

According to a preferred embodiment, the component carrying section can have fixing sections which have corresponding fixing sections of the carrier - for example the opposite outer wall or the opposite side web - for fixing the component carrying section in the operating position. This fixation can be, for example, a latching function. Overall, the component support section can be held in the operating position in a simple manner, so that a defined alignment and positioning of the same can be provided in a simple and safe manner.

The carrier can preferably form a closed, circumferential carrier contour in the area of the component carrying section in its operating position, viewed in the direction of the longitudinal axis. Thus, not only the carrier can be designed to be further stabilized overall - at least in the operating position of the component carrying section. The component support section can also be provided in a particularly simple and safe manner in a stable and positioned manner.

The carrier is preferably formed in one piece. The carrier can therefore be provided in a simple and cost-effective manner. In a particularly preferred embodiment, the carrier is made in one piece from a sheet of metal by bending. The carrier can then be designed, for example, as a punched-bent part. This enables both simple and effective and overall cost-effective production of the carrier.

The spacer element can preferably have a fastening section via which the spacer element is connected to the bottom wall. A simple connection of the spacer element to the lamp housing via its bottom wall can thus be provided. In principle, it is alternatively also conceivable that the spacer element is formed integrally with the lamp housing and can then be provided, for example, by bending to form the offset.

The fastening section preferably lies flat against the bottom wall - preferably in one plane. In this way, a stable attachment of the spacer element to the lamp housing and thus ultimately of the carrier to the lamp housing - i.e. via its bottom wall - can be achieved. If necessary, effective heat transfer from the carrier to the lamp housing can also be made possible.

The spacer element and preferably its fastening section is particularly preferably on an inside facing the interior attached to the floor wall. The spacer element can therefore be provided in a concealed location, namely in the interior, so that the spacer element does not disturb the aesthetic appearance of the lamp to the outside.

The spacer element can preferably have a support section offset from the bottom wall towards the interior for supporting support of the carrier. By providing a defined support section, a defined and secure support can be provided for the wearer.

The support section preferably lies flat against the support wall - therefore preferably in one plane - and is more preferably connected to it. In this way, a simple, safe and effective support or attachment of the carrier via the spacer element to the base wall can be provided.

The carrier is preferably connected to the spacer element in a detachable or non-detachable manner; This can be done, for example, by means of a force fit, by means of a form fit and/or by means of a material fit. The connection can be provided via the supporting wall on the one hand and the supporting section on the other.

The spacer element is preferably formed in one piece, so that it can be manufactured and handled in a simple manner. Particularly preferably, the spacer element is made in one piece from a sheet metal by bending; This is even more the case with a one-piece design with the lamp housing. The spacer element can therefore be provided cost-effectively in a particularly simple manner. The spacer element can preferably be manufactured as a stamped and bent part.

The spacer element preferably has a Z-shape or a U-shape. A Z-shape makes it possible to leave enough space underneath the support for appropriate lamps if necessary; to make maximum use of the lighting space. A U-shape makes it possible to provide the spacer element as compactly as possible.

The lamp unit preferably has at least two spacer elements distributed along the longitudinal axis. An improved carrying function of the spacer elements can thus be provided for the wearer.

The two spacer elements are preferably provided at opposite ends of the carrier when viewed with respect to the longitudinal axis. This means that the luminaire space can be used to its maximum even if several spacer elements are provided.

The bottom wall preferably has light passage sections for emitting light from lamps arranged in the lamp space. In this way, the light from lamps arranged in the lamp space can be easily and effectively emitted to the front of the lamp unit.

The light passage sections preferably have at least one opening in the bottom wall and/or at least one translucent cover in the bottom wall or are formed by the bottom wall itself. An opening is the simplest form of light passage section and can be easily created in the bottom wall; for example, at the same time in a punching and bending process to produce the lamp housing. A translucent cover makes it possible to close the luminaire housing at the front and at the same time provide defined light emission functions. The light-transmitting cover can be designed, for example, in the form of a diffuser or a lens and the like. The light-permeable cover can also be formed by the bottom wall itself, for example by forming the bottom wall as a whole or at least in sections from a corresponding light-permeable material. The lighting unit can therefore be provided with any light emission functions.

Each of the latching sections can preferably have latching subsections which extend in sections along the longitudinal axis. The locking function can thus be provided in a way that is gentle on the material and therefore effective.

If present, the component support section can preferably be provided in a region with respect to the longitudinal axis without locking sections, preferably between two locking sections. In this way, the partial absence of the locking sections can be used, for example, to insert or reach through lamp components. This means that the lamp unit as a whole can be designed to be as compact as possible, while the aesthetic appearance of the lamp is not affected towards the front - i.e. towards the bottom wall.

The locking sections can be arranged asymmetrically distributed along the longitudinal axis for each side wall; this is preferably mirror-symmetrical or axially symmetrical with respect to the longitudinal axis. In this way, it is possible to attach the lamp unit, preferably independently of the support elements provided on the ceiling side, for example, by simply rotating it horizontally by 180° in any position along the longitudinal axis with respect to the support element by snapping it into place.

The latching sections can preferably be provided for each side wall on an end face of the respective side wall facing away from the bottom wall. This means that the flexibility of the side walls can be used to the maximum to form the locking function. In addition, the locking sections are provided in a maximally exposed position in order to enable a simple, safe and effective locking function.

The locking sections preferably protrude laterally inwards from the respective side wall. The locking sections are therefore designed towards the interior and therefore do not affect the aesthetic appearance of the lighting unit. The locking sections are therefore preferably directed towards one another, which also provides a particularly effective holding function for the lamp unit.

The lamp housing preferably has a U-shaped cross section when viewed in the direction of the longitudinal axis. The lamp housing is therefore designed in a particularly simple and aesthetically appealing manner. In addition, the sections of the lamp housing that extend in planes, namely the bottom wall on the one hand and the side walls on the other, offer a good and simple support surface for arranging and supporting as well as connecting corresponding components if required. In this way, the lamp housing is also easy to manufacture and has a stable structure.

The lamp housing is preferably formed in one piece, so that it can be manufactured in a particularly simple and cost-effective manner. Particularly preferably, the lamp housing is made in one piece from a sheet metal by bending, so that the lamp housing can be manufactured easily and cost-effectively using known measures. The lamp housing is preferably manufactured as a stamped and bent part.

The lamp unit preferably also has at least one lamp, which is arranged on the flat front side of the support wall in order to be arranged in the lamp space. The lighting unit can thus be provided ready for operation and equipped to emit light. By providing the lamp on the flat front side of the supporting wall, the light output can also be effectively provided, while at the same time a simple and effective heat dissipation of the lamp via the carrier can take place. This is even more the case if the light source preferably lies flat on the flat front side of the supporting wall.

The light source preferably has an LED module; It is therefore designed as an LED lamp. The LED module in turn preferably has a circuit board and LEDs arranged thereon. The LED lamp can therefore be provided simply and cost-effectively in a known manner. The circuit board particularly preferably lies flat against the flat front side of the support wall, so that the heat generated by the LED lamp during operation can be dissipated in a particularly simple and effective manner via the carrier.

The lamp preferably has optical elements, such as lenses or reflectors, to influence the light guidance. The light emitted by the lamp can thus be guided in a defined manner as desired in order to generate a desired light emission characteristic. The optical elements are preferably arranged in the lamp space, so that the lamp space can be effectively used to accommodate any components of the lamp. In addition, the optical elements can be arranged securely between the bottom wall on the one hand and the supporting wall on the other hand and, more preferably, positioned or even clamped between them.

The optical elements are preferably arranged between at least one of the LEDs on the one hand and the bottom wall, preferably the associated light passage section, on the other hand, so that effective light guidance can be provided directly from the LEDs up to the light emission via the bottom wall. The optical elements particularly preferably have the light passage sections as a light-transmitting cover, if present. By integrating the translucent cover into the (LED) lamp, assembly can be simplified on the one hand and the number of components can be reduced on the other.

The optical elements are preferably provided as separate elements or integrated elements. The latter, for example, in that the optical elements are connected to the LED module or its circuit board and/or to the lamp housing or its bottom wall; this is preferably solvable or insoluble. The optical elements can thus be provided in any way and optimized with regard to their light guiding function.

The lamp unit preferably also has a lamp component. The lighting unit itself can therefore carry corresponding components for operating the lighting unit.

The lighting component can preferably have an electronic component, preferably an LED driver, and/or an electrical component, preferably a connection terminal sen. This means that any components for effective operation of the lighting unit can be provided as required.

The lamp component can preferably also have a component carrier for carrying the electronic and/or electrical component(s). This means that the components can be (pre-)assembled together and easily handled, which simplifies assembly.

The lamp component - if present, preferably its component carrier - is preferably attached to the component support section, so that it can be effectively provided in the lamp unit in a simple manner. The lamp component is preferably provided on a rear side of the component support section facing away from the support wall and the bottom wall, so that they can be mounted in a simple manner during assembly.

The lighting component can preferably be completely accommodated in the interior. In this way, the corresponding lamp components can be safely accommodated in the interior and also do not disturb the aesthetic appearance of the lamp. Alternatively, however, it is also conceivable that the lamp component, viewed with respect to the longitudinal axis, is arranged in an area adjacent to at least one of the latching subsections, preferably between two latching subsections, in order to protrude from the rear of the lamp housing on a side of the interior space opposite the bottom wall. In this way, the lamp housing as a whole can be designed to be as compact as possible, while the lamp components can protrude from an area that does not or only minimally disrupts the aesthetic appearance. The luminaire components can therefore also be provided exposed to the outside for cooling purposes, for example.

According to a further aspect, the present invention further relates to a ceiling system with at least one elongated or linear lighting unit according to the invention, as described above. In addition, the ceiling system also has at least one elongated or linear ceiling element, which has an element housing with corresponding locking sections that corresponds to the outer contour of the lamp housing and also extends in a longitudinal axis. The interior of the ceiling element can be provided empty or can be equipped with any components, such as cooling loops, in its interior.

The ceiling system also has a support element for latching the lighting unit and the ceiling element via their latching sections. A fastening option can thus be provided for both system components, which simplifies both production and assembly.

The longitudinal axes of the lamp housing and the element housing preferably run parallel to one another or extend parallel to one another. This means that the system components can easily be arranged next to each other and attached. In addition, an attractive appearance of the ceiling system can be created. In this way, for example, defined and preferably constant distances between the system components (i.e. lighting unit and ceiling element) can be provided over their length (i.e. along the longitudinal axis), whereby the ceiling system can be used, for example, as a cooling ceiling.

The ceiling system according to the invention makes it possible to equip a ceiling system consisting of corresponding ceiling elements with lighting units, which integrate optically unobtrusively into the appearance of the ceiling system, since these are largely identical in terms of their outer contours. The aesthetic appearance of a ceiling system equipped with the lighting units can thus be provided in a particularly aesthetically appealing and functionally optimized manner (e.g. as a cooling ceiling).

• 1 eine Draufsicht auf ein erfindungsgemäßes Deckensystem mit erfindungsgemäßer länglicher bzw. hier linearer Leuchteneinheit gemäß einem Ausführungsbeispiel der vorliegenden Erfindung,
• 2 eine rückseitige Ansicht des Deckensystems gemäß 1,
• 3 eine stirnseitige Seitenansicht des Deckensystems gemäß 1,
• 4 eine rückseitige Detailansicht des Deckensystems gemäß 2,
• 5 eine perspektivische Ansicht eines Trägers der linearen Leuchte gemäß 1 mit Komponententragabschnitt in der Freigabeposition,
• 6 eine perspektivische Ansicht des Trägers gemäß 5 mit dem Komponententragabschnitt in einer Position zwischen der Freigabeposition und der Betriebsposition,
• 7 eine perspektivische Ansicht des Trägers gemäß 5 mit dem Komponententragabschnitt vollständig heruntergebogen in der Betriebsposition,
• 8 eine perspektivische Ansicht der Leuchteneinheit gemäß 1,
• 9 eine perspektivische Explosionsdarstellung der Leuchteneinheit gemäß 8,
• 10 Detail A von Leuchtenkomponente, Träger und Leuchtmittel aus 9, und
• 11 eine schematische Seitenansicht des Details A aus 10 im Längsschnitt.

Further advantages, features and refinements of the present invention are described with reference to the figures in the accompanying drawings. Show it:

• 1 a top view of a ceiling system according to the invention with an elongated or here linear lighting unit according to the invention according to an exemplary embodiment of the present invention,
• 2 a rear view of the ceiling system according to 1 ,
• 3 a front side view of the ceiling system according to 1 ,
• 4 a detailed view of the ceiling system from the back 2 ,
• 5 a perspective view of a support of the linear lamp according to 1 with component support section in the release position,
• 6 a perspective view of the wearer according to 5 with the component transfer cut in a position between the release position and the operating position,
• 7 a perspective view of the wearer according to 5 with the component support section fully bent down in the operating position,
• 8th a perspective view of the lighting unit 1 ,
• 9 a perspective exploded view of the lighting unit 8th ,
• 10 Detail A of the luminaire component, support and lamp 9 , and
• 11 a schematic side view of detail A 10 in longitudinal section.

The figures show different views of an elongated - and here linear - lighting unit 1, components thereof, and a ceiling system 100 equipped with the lighting unit 1.

The lamp unit 1 has an elongated lamp housing 2, which extends along a longitudinal axis X. The longitudinal axis X can, as shown, extend in a straight line and thus form a linear lighting unit 1. Alternatively, however, it is also conceivable that the longitudinal axis

The lamp housing 2 is integrally formed. The lamp housing 2 is preferably formed in one piece. In a preferred embodiment, like this 1 until 4 , 8th and 9 As can be seen, the lamp housing 2 can preferably be made in one piece from a sheet of metal by bending. The lamp housing 2 is then preferably designed as a stamped and bent part.

The lamp housing 2 has a bottom wall 3 extending along the longitudinal axis X. Like this in particular 1 , 3 and 8th As can be seen, the bottom wall 3 here preferably extends flat and particularly preferably here in or along a plane.

The lamp housing 2 furthermore has side walls 4 extending along the longitudinal axis X on both sides of the longitudinal axis especially in the 2 until 4 , 8th , 9 and 11 is shown. The side walls 4 here preferably extend parallel to one another. The side walls 4 preferably also each extend in or along a plane. The side walls 4 preferably extend perpendicular to the bottom wall 3.

Preferably shows how 3 , 8th and 9 show, the lamp housing 2 has a U-shaped cross section when viewed in the direction of the longitudinal axis

The bottom wall 3 preferably has light passage sections 30 for emitting light from lamps 5 arranged in the interior I or a lamp space L described below. The light passage sections 30, such as in the 1 and 8th shown, have at least one opening (here several openings) 31 in the bottom wall 3 and / or at least one translucent cover (here several translucent covers) 32 in the base wall 3 or be formed by the base wall 3 itself.

The lamp unit 1 further has a carrier 6, which is arranged in the interior I, as is preferred 3 , 9 and 11 can be seen.

The carrier 6 has a support wall 60 which extends flatly along the longitudinal axis 3 and 5 until 7 as well as 9 to 11 can be seen.

Like this in particular 3 As can be seen, the supporting wall 60 preferably completely spans the interior space I between the side walls 4.

Like this in particular 5 until 7 as well as 9 to 11 can be seen, the support wall 60 can extend parallel to a plane, whereby the flat front side 61 also extends in a plane.

The carrier 6 preferably has outer walls or side webs (hereinafter referred to collectively as “outer walls”) 62, as seen in the direction of the longitudinal axis X, on both sides of the longitudinal axis 3 and 5 until 7 as well as 9 to 11 can be seen. The outer walls 62 can then preferably extend along the longitudinal axis X in order to define a fastening space B together with the supporting wall 60.

In principle, it is also conceivable that a corresponding outer wall or a corresponding side web 62 is provided only on one side of the longitudinal axis X.

In particular with reference to the 3 , 9 and 11 the outer walls 62 may extend from the support wall 60 in a direction away from the bottom wall 3; in the exemplary embodiment shown here perpendicular to the bottom wall 3.

Like this in particular 2 until 4 , 8th and 9 As can be seen, the side walls 4 each have a latching section 40 for latching fastening of the lamp unit 1 to a corresponding support element 101. The lamp housing 2 is then designed in such a way that the locking sections 40 are moved from their rest position by elastic deflection of the side walls 4 transversely to the longitudinal axis X (cf. 2 until 4 , 8th and 9 ) can be moved or deflected into a locking position. After the deflection forces have been removed, the side walls 4 automatically return to the rest position. The side walls 4 together with the locking section 40 thus act as a catch for the locking fastening of the lamp unit 1 to a support element 101, as described above 2 until 4 can be seen as an example.

With reference to the 5 until 9 the outer walls 62 are preferably aligned parallel to the side walls 4. Continue with reference to the 3 The outer walls 62 can preferably lie flat against the side walls 4 in the rest position.

The outer walls 62 can, like this 5 until 7 as well as 9 to 11 can be seen, along the longitudinal axis X have sections 63, 64 of different heights extending away from the supporting wall 60. A transition 65 between adjacent sections 63, 64 of different heights can be formed abruptly along the longitudinal axis X, as is the case 5 until 7 as well as 9 to 11 can be seen.

A section 63 of low height can preferably be limited to one or two adjacent sections 64 of greater height, as exemplified in 9 is shown.

The carrier 6 may further preferably have a component support section 66 formed integrally with the support wall 60 for fastening lamp components 8, as shown in FIGS 2 until 4 is visible. The component carrying section 66 is in an operating position (cf. 7 and 9 until 11 ) parallel to the supporting wall 60 and - with reference to the 3 , 9 and 11 - Arranged offset from the bottom wall 3 in the interior I.

The component support section 66 is preferably provided in the area of the low height section 63, for example 9 until 11 can be seen.

Like this in particular 5 until 7 , 9 and 10 As can be seen, the component support section 66 can be formed on an end face 67 of at least one of the outer walls 62 that is distal with respect to the support wall 60.

The component support section 66 is preferably formed integrally with the support wall 60 or one of the outer walls 62, so that the component support section 66 can be formed by plastic bending from one in 5 illustrated release position, in which a rear side 600 of the support wall 60 facing away from the bottom wall 3 is exposed, into the operating position, as shown in 7 is shown, can be transferred. This transfer is possible through the synopsis of the 5 until 7 illustrated.

The component support section 66 can preferably have a hole pattern 660 for receiving fastening means 18, such as screws, for fastening the lamp components 8. This hole pattern 660 can preferably be formed by one or more through openings or through holes, which can further preferably have an internal thread. In the exemplary embodiment shown (cf. 11 ) here, threaded sections 180 of the fastening means 18 designed as screws protrude into the fastening space B and therefore do not collide with the lamp 5.

In the bendable variant of the component carrying section 66, a fixing section 620 can be provided on the outer wall 62 opposite the component carrying section 66 here, which is connected to a corresponding fixing section 662 of the component carrying section 66 in the operating position for clamping or latching reception and thus fixing the position of the component carrying section 66 in serve the operating position. These fixing sections 620, 662 are exemplified in the 5 until 7 and 10 shown.

Like this in particular 7 , 10 and 11 As can be seen, the carrier 6, viewed in the direction of the longitudinal axis

Like this in particular 5 until 7 as well as 9 to 11 can be seen, the carrier 6 can preferably be formed in one piece; particularly preferably be made in one piece from a sheet of metal by bending. The carrier 6 is particularly preferably manufactured as a standing-bending part.

Each of the latching sections 40 can preferably have latching sections 41 which extend in sections along the longitudinal axis X, as is the case, for example 2 and 4 can be seen. If present, the component carrying section 66 can be provided in an area with respect to the longitudinal axis X without a locking section 41 and preferably between two locking sections 41, as shown in FIG 2 and 9 is visible.

Particularly preferably, the locking sections 41 per side wall 4 are arranged asymmetrically distributed along the longitudinal axis For this purpose, the locking sections 41 of the opposite side walls 4 are preferably arranged mirror-symmetrically or axially symmetrically to one another with respect to the longitudinal axis X. This is exemplified in the 9 shown.

The locking sections 41 are, like in particular 3 and 9 can be seen, each side wall 4 is provided on an end face 42 of the respective side wall 4 facing away from the bottom wall 3.

Like that too 2 until 4 as well as 8 and 9 can be seen, the locking sections 41 can preferably protrude laterally inwards from the respective side wall 4 - i.e. here to the interior space I transversely in front of or parallel to the bottom wall 3.

Like this in particular 3 As can be seen, the lamp unit 1 can also have a spacer element 7, which carries the support wall 60 offset parallel to the base wall 3 in the interior I, so that the lamp space L for receiving the lamp 5 is formed between the support wall 60 and the base wall 3. The spacer element 7 is connected only to the bottom wall 3 on the lamp housing side; and therefore not directly connected to the side walls 4.

The spacer element 7 preferably has a fastening section 70, via which the spacer element 7 is connected to the bottom wall 3. The fastening section 70 can preferably lie flat against the bottom wall 3.

Like that too 3 As can be seen, the spacer element 7 and preferably its fastening section 70 can be attached to an inside 33 of the bottom wall 3 facing the interior I.

The spacer element 7 can preferably have a support section 71 offset from the bottom wall 3 towards the interior I for the supporting support of the carrier 6. The support section 71 can preferably lie flat against the support wall 60 and can preferably be connected to it.

The fastening section 70 is preferably connected to the support section 71 via a connecting section 72.

In the embodiment shown here, the spacer element 7 has a Z shape. The spacer element 7 can alternatively also have a U-shape or another shape. In the U-shape, the two distal legs then form the fastening section 70 on the one hand and the support section 71 on the other, with the connecting leg then preferably forming the connecting section 72.

The spacer element 7 is preferably formed in one piece and is particularly preferably made in one piece from a sheet metal by bending. The spacer element 7 can therefore also preferably be manufactured as a stamped and bent part.

The carrier 6 is preferably connected to the spacer element 7 in a detachable or non-detachable manner; This can be done, for example, by means of a force fit, by means of a form fit and/or by means of a material fit. The connection can be provided via the support wall 60 on the one hand and the support section 71 on the other hand. With reference to 9 Fastening means 17, such as screws here, can preferably be provided, by means of which the carrier 6 is releasably connected to the spacer element 7.

The lamp unit 1 can preferably have at least two spacer elements 7 arranged distributed along the longitudinal axis 3 is visible. Accordingly, with reference to 9 , a fastener 17 may be provided on each side.

Like this in particular 1 until 3 as well as 9 to 11 can be seen, the lamp unit 1 can also have the already described lamp 5, which is then preferably arranged on the flat front side 61 of the support wall 60 and particularly preferably lies flat against it, so as to be arranged in the lamp space L . The Lamp unit 1 can have one or more lamps 5, depending on requirements.

The lamp 5 is here connected to the carrier 6 or its supporting wall 60 by means of fastening means 9. The fastening means 9 are formed here as screws, which are guided from the back 600 of the supporting wall 60 through openings 68 in the supporting wall 60 in order to fasten the lighting means 5 lying on the opposite front 61 of the supporting wall 60. For this purpose, the fastening means 9 are guided here, for example, into fastening sections 54 of the lamps 5. In the exemplary embodiment shown, the optical element 53 here has the fastening sections 54 (preferably integrally). The fastening sections 54 can have an internal thread for fastening the fastening means 9, which are preferably designed as screws. The screw heads 90 of the fasteners 9 lie here on the back 600 and are therefore accommodated in the fastening space B according to the present exemplary embodiment.

The lamp 5 can have at least one LED module 50 and thus form an LED lamp. The LED module 50 in turn can preferably have a circuit board 51 and LEDs 52 arranged thereon. The circuit board 51 preferably lies flat against the flat front side 61 of the supporting wall 60.

The lighting means 5 can further preferably have optical elements 53, such as lenses or reflectors, for influencing the light guidance. The optical elements 53 are preferably arranged in the lamp space L, as shown for example in FIGS 9 until 11 can be derived.

The optical elements 53 are preferably arranged between at least one of the LEDs 52 on the one hand and the bottom wall 3 or the associated light passage section 30 on the other hand.

In a particularly preferred embodiment, the optical elements 53 can have the light passage sections 30 as a light-transmissive cover 32, such as 1 and 8th until 11 can be seen.

The lamp unit 1 can also preferably have a lamp component 8 (cf. 2 until 4 and 8 to 11). The lighting component 8 can have electrical and/or electronic components. For example, the lighting component 8 can have an LED driver 80 as an electronic component (cf. 9 ). Likewise, the lamp component 8 can, for example, have a connection terminal 81 as an electrical component for the electrical connection of electrical cables - for example between the electronic component 80, the lamp 5 and / or an external electrical connection (cf. 9 until 11 ). The lamp component 8 can also have a component carrier 82 for carrying any electrical and/or electronic components 81, 80. The electrical components 81 can be attached to the component carrier 82 by means of fastening means 810 - here releasably using screws. Likewise, the electronic components 80 can be attached to the component carrier 82 by means of fastening means 800 - here releasably by means of screws. The respective threaded sections 801, 811 of the fastening means 800, 810 are accommodated here in the fastening space B and therefore do not collide with the lamp 5. The transition 65 can serve, for example, as an axial stop or for axial positioning of the lamp component 8; for example, by arranging the lamp component 8 axially between two adjacent sections 64 of greater height, as shown by way of example 9 can be derived.

Furthermore, the lamp component 8 can have a component housing 83 in order to partially or completely enclose the lamp component 8 - preferably alone or, for example, together with the component carrier 82 and/or the lamp housing 2. The component housing 83 can be attached using fasteners (here screws) 84; here, for example, on the component carrier 83 (see, for example, 9 ).

The lamp component 8 can preferably be attached to the component support section 66; preferably on a rear side 661 of the component support section 66 facing away from the support wall 60 and the bottom wall 3. The lamp component 8 can be placed on the component support section 66, for example by means of the component support 82, in order to provide the lamp component 8. The lamp component 8 can be fastened using the fastening means 18 - here via the component carrier 82.

The lamp component 8 can preferably be completely accommodated in the interior space I. As shown in the illustrated exemplary embodiment, it is alternatively also conceivable that the lamp component 8, viewed with respect to the longitudinal axis Interior I protrude from the rear of the lamp housing 2, as is the case in particular 2 until 4 can be seen.

With reference to the 1 until 4 The present invention further relates to the already described ceiling system 100. In addition to the at least one elongated or linear lamp unit 1 (as described above), this also has at least one - here four - equally elongated or linear ceiling elements 10. The ceiling elements 10 each have an element housing 11 corresponding to the outer contour of the lamp housing 2 and also extending in a longitudinal axis X _P with locking sections 14 corresponding to the locking sections 40. Consequently, the lamp unit 1 on the one hand and the ceiling element 10 on the other hand are similar at least in one side facing away from the support element 101; at most with the exception of the light passage sections 30.

The ceiling system 10 further has the support element 101 for latching the lighting unit 1 and the ceiling element 10 via their latching sections 40, 14.

Like this for example 1 until 4 _As can be seen, the longitudinal axes _X , Provision of ceiling cooling or ceiling ventilation.

The following describes, by way of example, with reference to the figures, how the lighting unit 1 can be manufactured and the ceiling system 100 can be formed or assembled.

First, the carrier 6, for example as in 5 shown with component support section 66 in the release position, provided.

How out 9 As can be seen, the lamp 5 is then arranged on the flat front side 61 of the supporting wall 60. For this purpose, the LED module 50 with its circuit board 51 is preferably placed flat on the front 61 so that the LEDs 52 point away from the carrier 6. The optical element 53 can then be provided and preferably placed on the LED module 50. A lens or reflector, designed here as a pot, is preferably placed on each LED 52 in order to influence the light emitted by the respective LED 52 in a defined manner.

The lamp 5 is then connected to the carrier 6 by means of fasteners 9. For this purpose, the fastening means (here screws) 9 are guided from the back 600 of the supporting wall 60 through the passage openings 68 and into fastening sections 54 of the lamps 5 (here the optical element 53). As in 11 As can be seen, the screw heads 90 of the fastening means 9 then rest on the back 600 and are thus accommodated in the fastening space B. Since in the exemplary embodiment shown the LED module 50 is sandwiched between the optical element 53 on the one hand and the carrier 6 on the other hand, the LED module 50 is securely positioned and received in this way.

The component carrying section 66 is then transferred from the release position to the operating position - here plastically bent - as can be seen from the overview 5 until 7 is visible. In the operating position, the fixing sections 620, 662 can preferably interact accordingly (cf. 7 and 10 ).

The lighting component 8 can then be provided. This can have electrical and/or electronic components 81, 80; in the present case an LED driver 80 and a connection terminal 81 as well as possibly other or further components. In the exemplary embodiment shown, these are combined on a component carrier 82 and are each fastened to the component carrier 82 by means of fastening means (here screws) 800, 810. The lamp component 8 can then be placed as a unit on the back 661 of the two component support sections 66 - here with the component carrier 82 - and preferably attached to the carrier 6 by means of fastening means (here screws) 18. The screw shafts or threaded sections 180, 801, 811 of the fasteners 18, 800, 810 protrude into the fastening space B and therefore do not collide with the lamp 5. Likewise, the screw heads 90 of the fasteners 9 of the lamp 5 are accommodated in the fastening space B, and therefore do not collide with the lamp component 8 placed on the carrier 6.

The unit consisting of carrier 6, lamp 5 and lamp component 8 can then be easily handled. This is then inserted into the interior I of the lamp housing 2 and here with the support wall 60 - here with the flat front 61 in front - placed on the spacer elements 7 - here their support sections 71. The spacer elements 7 are provided here at opposite ends of the carrier 6 as seen with respect to the longitudinal axis X, so that they do not collide with the lamps 5 and still provide a stable support. With reference to 9 The unit mentioned can then be fastened to the spacer element 7 via the carrier 6, preferably by means of fastening means (here screws) 17. The optical elements 53 can preferably be arranged in the lamp space L in such a way that they extend up to or into the light passage sections 30 and preferably form the light-transparent cover 32 there, such as the 1 and 8th until 11 can be seen. If necessary, the unit can initially be installed without the lighting component 8. In this case, the lamp component 8 can then be mounted on the component support section(s) 66 after the support 6 and lamp 5 have been installed.

The component housing 83 can be placed from behind on the component carrier 82 at a desired time before or after the assembly of the said unit (including the lamp component 8) so that it - here together with the component carrier 82 and the lamp housing 2 - completely houses the lamp component 8 and thus securely accommodates the electrical or electronic components 81, 80 therein. The component housing 83 can be attached using fasteners (here screws) 84; here on the component carrier 83.

To form a ceiling system 100, the support element 101 is first provided and preferably fastened; for example on a wall. The support element 101 is preferably fixedly mounted on a ceiling. In principle, a pendulum solution is also conceivable.

At least one of the elongated lamp unit 1 described and at least one - here four - elongated ceiling elements 10 are then provided. The lamp unit 1 and the ceiling elements 10 are then snapped or snapped onto the support element 101 with their latching sections 40, 14. For this purpose, the locking sections 40, 14 are moved from their rest position into a locking position by an elastic deflection of the side walls 4, directed away from the interior space I, transversely to the respective longitudinal axis X, X _P (this before or during placement on the support element 101) and automatically returned to its rest position after being put on. This is easily possible with the lamp unit 1, in particular because all of the components arranged in the interior I (here carrier 6, lamp 5, lamp component 8) are connected to the lamp housing 2 only via the base wall 3 - here via the spacer element 7 - with the lamp housing 2, and the side walls 4 can therefore be freely and elastically deflected. The longitudinal axes X, X _P of the lamp housing 2 and the element housing 11 preferably run parallel to one another or extend parallel to one another.

The present invention is not limited to the above-described embodiment as long as it is included in the subject matter of the following claims.

Claims (42)

Elongated lamp unit (1) having: an elongated lamp housing (2) which extends along a longitudinal axis (X), the lamp housing (2) being integrally formed and having: • a bottom wall (3) extending along the longitudinal axis (X), and • Seen in the direction of the longitudinal axis (X), on both sides of the longitudinal axis (X) away from the bottom wall (3) to the same side and also side walls (4) extending along the longitudinal axis (X), which together with the bottom wall (3). Limit interior space (I), a carrier (6) which is arranged in the interior (I), the carrier (6) having a support wall (60) which extends flatly along the longitudinal axis (X) and which has a flat front side (61) facing the bottom wall (3). ) for arranging a light source (5), a spacer element (7), which carries the support wall (60) offset parallel to the base wall (3) in the interior (I), so that a lamp space (L) for receiving the lamp (5) between the support wall (60) and the base wall (3) is formed, wherein the spacer element (7) on the lamp housing side is connected only to the base wall (3), wherein the side walls (4) each have a latching section (40) for latching fastening of the lamp unit (1) to a corresponding support element (101), and wherein the lamp housing (2) is designed in such a way that the locking sections (40) can be moved from their rest position into a locking position by elastic deflection of the side walls (4) transversely to the longitudinal axis (X). Elongated lamp unit (1). Claim 1 , wherein the supporting wall (60) completely spans the interior (I) between the side walls (4). Elongated lamp unit (1). Claim 1 or 2 , wherein the support wall (60) extends parallel to a plane, and / or wherein the flat front side (61) extends in a plane. Elongated lamp unit (1) according to one of the preceding claims, wherein the carrier (6), viewed in the direction of the longitudinal axis (X), has outer walls (62) extending away from the supporting wall (60) on both sides of the longitudinal axis (X) on the same side. Elongated lamp unit (1). Claim 4 , with the outer walls (62) extending along the Longitudinal axis (X) extend in order to delimit a fastening space (B) together with the supporting wall (60). Elongated lamp unit (1). Claim 4 or 5 , wherein the outer walls (62) extend from the support wall (60) in a direction away from the bottom wall (3). Elongated lamp unit (1) according to one of the Claims 4 until 6 , wherein the outer walls (62) are aligned parallel to the side walls (4), preferably lying flat against the side walls (4) in the rest position. Elongated lamp unit (1) according to one of the Claims 4 until 7 , wherein the outer walls (62) have sections (63, 64) of different heights extending away from the supporting wall (60) along the longitudinal axis (X). Elongated lamp unit (1). Claim 8 , wherein a transition (65) between adjacent sections (63, 65) of different heights is formed abruptly along the longitudinal axis (X). Elongated lamp unit (1). Claim 8 or 9 , wherein a section (63) of low height is limited to one or two adjacent sections (64) of greater height. Elongated lamp unit (1) according to one of the preceding claims, wherein the carrier (6) has a component support section (66) formed integrally with the support wall (60) for fastening lamp components (8), which in an operating position is parallel to the support wall (60) and is arranged offset away from the bottom wall (3) in the interior (I). Elongated lamp unit (1). Claim 10 and 11 , wherein preferably the component support section (66) is provided in the area of the low height section (63). Elongated lamp unit (1). Claim 11 or 12 , wherein the component support section (66) is formed on an end face (67) of at least one of the outer walls (62) which is distal with respect to the support wall (60). Elongated lamp unit (1) according to one of the Claims 11 until 13 , wherein the component support section (66) is formed integrally with the support wall (60) or one of the outer walls (62), so that the component support section (66) is plastically bent from a release position in which a rear side facing away from the bottom wall (3). (600) of the support wall (60) is exposed, can be transferred to the operating position. Elongated lamp unit (1) according to one of the Claims 11 until 14 , wherein the carrier (6), viewed in the direction of the longitudinal axis (X), forms a closed, circumferential carrier contour in the area of the component carrying section (66) in its operating position. Elongated lamp unit (1) according to one of the preceding claims, wherein the carrier (6) is formed in one piece, preferably made in one piece from a sheet of metal by bending. Elongated lamp unit (1) according to one of the preceding claims, wherein the spacer element (7) has a fastening section (70) via which the spacer element (7) is connected to the bottom wall (3). Elongated lamp unit (1). Claim 17 , wherein the fastening section (70) lies flat against the bottom wall (3). Elongated lamp unit (1) according to one of the preceding claims, wherein the spacer element (7), preferably its fastening section (70), is attached to an inside (33) of the bottom wall (3) facing the interior (I). Elongated lamp unit (1) according to one of the preceding claims, wherein the spacer element (7) has a support section (71) offset from the bottom wall (3) towards the interior (I) for the supporting support of the carrier (6). Elongated lamp unit (1). Claim 20 , wherein the support section (71) lies flat against the support wall (60), preferably being connected to it. Elongated lamp unit (1) according to one of the preceding claims, wherein the spacer element (7) is formed in one piece, preferably made in one piece from a sheet of metal by bending. Elongated lamp unit (1) according to one of the preceding claims, wherein the spacer element (7) has a Z-shape or a U-shape. Elongated lamp unit (1) according to one of the preceding claims, wherein the lamp unit (1) has at least two spacer elements (7) arranged distributed along the longitudinal axis (X), the two spacer elements (7) preferably being opposite when viewed with respect to the longitudinal axis (X). Ends of the carrier (6) are provided. Elongated lamp unit (1) according to one of the preceding claims, wherein the bottom wall (3) has light passage sections (30) for emitting light from lamps (5) arranged in the lamp space (L). Elongated lamp unit (1). Claim 25 , wherein the light passage sections (30) have at least one opening (31) in the bottom wall (3) and / or at least one light-transparent cover (32) in the bottom wall (3) or are formed by the bottom wall (3) itself. Elongated lamp unit (1) according to one of the preceding claims, wherein each of the latching sections (40) has latching sub-sections (41) extending in sections along the longitudinal axis (X), wherein, if present, the component carrying section (66) in a region with respect to the longitudinal axis ( X) seen without a locking section (41), preferably between two locking sections (41), is provided. Elongated lamp unit (1). Claim 27 , wherein the locking sections (41) are arranged asymmetrically distributed per side wall (4) along the longitudinal axis (X); this is preferably mirror-symmetrical or axially symmetrical with respect to the longitudinal axis (X). Elongated lamp unit (1) according to one of the preceding claims, wherein the locking sections (40) for each side wall (4) are provided on an end face (42) of the respective side wall (4) facing away from the bottom wall (3). Elongated lamp unit (1) according to one of the preceding claims, wherein the latching sections (40) protrude laterally inwards from the respective side wall (4). Elongated lamp unit (1) according to one of the preceding claims, wherein the lamp housing (2) has a U-shaped cross section when viewed in the direction of the longitudinal axis (X). Elongated lamp unit (1) according to one of the preceding claims, wherein the lamp housing (2) is formed in one piece, preferably made in one piece from a sheet of metal by bending. Elongated lamp unit (1) according to one of the preceding claims, further comprising at least one lamp (5), which is arranged on the flat front side (61) of the support wall (60), preferably rests flat against it, in order to be arranged in the lamp space (L). to be. Elongated lamp unit (1). Claim 33 , wherein the lamp (5) has an LED module (50), the LED module preferably having a circuit board (51) and LEDs (52) arranged thereon, the circuit board (51) more preferably flat on the flat front side ( 61) rests on the supporting wall (60). Elongated lamp unit (1). Claim 33 or 34 , wherein the lamp (5) has optical elements (53), preferably lenses or reflectors, for influencing the light guidance, the optical elements (53) being arranged in the lamp space (L). Elongated lamp unit (1). Claim 34 and 35 , wherein the optical elements (53) are arranged between at least one of the LEDs (52) on the one hand and the bottom wall (3), preferably the associated light passage section (30), on the other hand, with particularly preferably the optical elements (53) the light passage sections (30) as a light-transmitting cover (32), if present. Elongated lamp unit (1) according to one of the preceding claims, further comprising a lamp component (8). Elongated lamp unit (1). Claim 37 , wherein the lighting component has an electronic component (80), preferably an LED driver, and/or an electrical component (81), preferably a connection terminal, wherein the lighting component (8) preferably further comprises a component carrier (82) for carrying the electronic and/or electrical components (80, 81). Elongated lamp unit (1). Claim 37 or 38 , wherein the lamp component (8), preferably its component carrier (82) if present, is attached to the component support section (66), preferably on a rear side (661) of the component support section (66) facing away from the support wall (60) and the bottom wall (3). . Elongated lamp unit (1) according to one of the Claims 37 until 39 , wherein the lamp component (8) is completely accommodated in the interior (I), or wherein the lamp component (8), viewed with respect to the longitudinal axis (X), is in an area adjacent to at least one of the latching sections (41), preferably between two latching sections (41 ), is arranged to protrude from the back of the lamp housing (2) on a side of the interior (I) opposite the bottom wall (3). Elongated lamp unit (1) according to one of the preceding claims, which is designed as a linear lamp unit in which the longitudinal axis (X) of the lamp housing (2) extends in a straight line. Ceiling system (100), comprising at least one elongated lamp unit (1) according to one of the preceding claims, at least one elongated ceiling element (10), which has an element housing (which corresponds to the outer contour of the lamp housing (2) and also extends in a longitudinal axis (X _P ). 11) with corresponding locking sections (14), and a support element (101) for locking the lamp unit (1) and the ceiling element (10) via their locking sections (40,14), the longitudinal axes (X, X _P ) of the lamp housing (2) and the element housing (11) preferably run parallel to one another or extend parallel to one another.

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