Modular elongated luminaire

Abstract

The invention relates to a system for realising a luminaire, wherein the system comprises a fastening device which has a spring unit and an actuating unit, and, as modules, at least one base module (1) and a functional module (2), wherein a first part of the fastening device is fixed to the base module (1) and a second part of the fastening device is fixed to the functional module (2), wherein either the first part or the second part comprises a retaining spring (4) of the spring unit, and the other of the first part and the second part comprises an actuating element (7, 8) of the actuating unit, wherein the retaining spring (4) is fixed to one of the modules (1, 2) and bears vertically against a retaining projection provided on the other module (1, 2), thereby fixing the modules (1, 2) to one another, and the actuating element (7, 8) is fixed to the other module (1, 2) and, starting from the operating state, the functional module (2) can be detached from the base module (1) by actuating the actuating element (7, 8) while deflecting the retaining spring (4), thereby realising a release state.

Description

[0001] Modular elongated luminaire

[0002] The invention relates to a system for realizing a luminaire, a luminaire realized by means of the system and a method for disassembling a functional module of a luminaire from a base module of a luminaire.

[0003] Generic systems for implementing a luminaire comprise, as modules, at least a base module and a functional module, as well as a fastening device by means of which the base module and functional module are held together in an operating state of the system in which a luminaire is implemented. In such a system, the base module is intended for mounting the luminaire to a ceiling, for example, for mounting to a ceiling using a mounting clamp or for mounting to a ceiling using cables, so that the base module, and thus ultimately also the luminaire, are suspended from the ceiling or mounted to it.For this purpose, the base module has a conventionally designed mounting connection on its upper side, for example in the form of a screw connection or in the form of mounting channels which are spaced apart from one another in a transverse direction and into which the mounting clamp can be inserted so as to engage vertically behind the two mounting channels or into which a thickened end of a cable can be inserted so that the thickened end is arranged so as to engage vertically behind the respective mounting channel.Generic systems have the advantage that initially a base module, often also several base modules arranged one behind the other, with two adjacent base modules being fixed to one another by a coupling, can be mounted on a ceiling and in particular supply lines can be laid in the base module, after which at least one functional module, in particular several functional modules arranged one behind the other in the longitudinal direction, can be mounted vertically from below on the base module or the base modules arranged one behind the other to create the luminaire.Such systems not only enable the simple implementation of a luminaire and its installation on a ceiling, but also facilitate the design of the luminaire as precisely as possible for the desired purpose, since the functional modules can be specifically equipped with the desired electrical functional elements to achieve the desired purpose. The invention relates in particular to a system for implementing an elongated luminaire, wherein at least one of the base module and the functional module is elongated in a longitudinal direction.In the present case, a longitudinally elongated configuration of a component is understood to mean a configuration in which the component extends along the longitudinal direction over a length that is at least twice, in particular at least three times, in particular at least five times, in particular at least ten times its transverse length and its vertical length. The transverse length refers to the length along a transverse direction perpendicular to the longitudinal direction. The vertical length refers to the length along a vertical direction perpendicular to the longitudinal direction and the transverse direction.The invention relates in particular to a luminaire which extends over at least 2 m, in particular at least 3 m, in particular at least 5 m, in particular at least 10 m in the longitudinal direction and whose base module extends in the transverse direction over less than 30 cm, in particular less than 20 cm, in particular less than 15 cm, in particular less than 10 cm. The invention relates in particular to a luminaire which has at least two, in particular at least three base modules arranged one behind the other in the longitudinal direction and in particular at least as many function modules. The invention relates in particular to a luminaire which has a greater number of function modules than base modules, in particular at least three base modules and in particular at least 5, in particular at least 7 function modules.

[0004] Although generic systems generally enable the simple and functional implementation of a luminaire, they do have various disadvantages. Firstly, it has proven difficult to design a sufficiently robust base module, functional module and the two interconnecting fastening devices. Secondly, it has proven difficult to design the fastening device with an actuating unit that is visually appealing or can be provided unobtrusively on a luminaire and that is easy to operate and can be used for various functional modules. In particular, it has proven difficult to design the system components that are cost-effective, robust and easy to use and, secondly, to provide a system with a high level of flexibility and functionality that preferably meets sophisticated visual requirements.

[0005] The present invention is based on the object of providing a system, a luminaire and / or a method with which at least one disadvantage of generic systems, luminaires and / or methods is at least partially eliminated.

[0006] As a solution to the problem underlying the present invention, the invention proposes a system with the features according to claim 1. The system has a fastening device which has a spring unit and an actuating unit. The system further has at least one base module and one functional module as modules, wherein preferably at least one of the modules, in particular the base module and the functional module, is or are elongated in a longitudinal direction. In an operating state of the system in which a luminaire is realized, the modules are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction. The enclosing can be an uninterrupted enclosure around a longitudinal axis of the luminaire running along the longitudinal direction or can have interruptions.The system can, in particular, comprise a plurality of functional modules that, in the operating state, are held one behind the other in the longitudinal direction on the base module, or comprise a plurality of base modules and a plurality of functional modules, wherein, in the operating state, the base modules are arranged one behind the other in the longitudinal direction and the functional modules are arranged one behind the other in the longitudinal direction and are held on the plurality of base modules. In particular, the system can comprise a plurality of different functional modules, for example, a first additional functional module and a second additional functional module, as explained in more detail below.In one embodiment, various functional modules are held one behind the other in the longitudinal direction on the at least one base module. Furthermore, alternative operating states can be provided in which, instead of the functional module, other functional modules, in particular a first additional and / or second additional functional module, are held on the at least one base module. Thus, the operating states and alternative operating states explained here can be combined with one another in such a way that a functional module and a further functional module are held fixedly on at least one base module at the same time, as is described here with reference to the operating state or the alternative operating state. Generally, in the operating state orthe respective operating state, the base module is arranged at least in sections vertically above the functional module, wherein the luminaire can be mounted on a ceiling via a mounting connection formed by the base module. The interior space is accordingly formed at least in sections vertically between the base module and the functional module. The fastening device generally comprises an actuating unit and a spring unit; in particular, the fastening device can consist of an actuating unit and a spring unit. While the spring unit comprises a retaining spring, by means of which the functional module orthe respective functional module is held on the base module so that it is fixed relative to the base module by means of the retaining spring, the actuating unit can be actuated by a user and is connected to the spring unit in such a way that when the actuating unit is actuated by a user, the spring unit can be deflected starting from the operating state or respective operating state so that the functional module can be detached from the base part. The following explanations regarding a specific operating state can generally relate analogously to the interaction of the respective components in the respective alternative or other operating state. Accordingly, the respective system components used to implement the respective operating state can interact with one another in such a way as is described here with reference to an operating state for the system components used to implement the operating state.Thus, properties of the system that are explained for embodiments with reference to one operating state can, in particular, also be present correspondingly in an alternative operating state. According to the invention, a first part of the fastening device is fixed to the base module and a second part of the fastening device is fixed to the functional module. Irrespective of the implementation of an operating state, the first part of the fastening device is fixed to the base module and can thus be moved freely together with it, while the second part of the fastening device is fixed to the functional module and can thus be moved freely with it. One of the first and second parts comprises a retaining spring of the spring unit and the other of the first and second parts comprises an actuating element of the actuating unit.In operation, the fastening device is implemented in that one part of the fastening device comprising the retaining spring interacts with the other part of the fastening device comprising the actuating element. In operation, the retaining spring is fixed to one of the modules and rests vertically on a retaining projection provided on the other module, fixing the modules to one another. For example, the functional module can be one module to which the retaining spring is fixed, and the base module can be the other module which has the retaining projection. The retaining projection forms a shoulder against which the retaining spring rests in operation. The retaining projection thus projects beyond an area provided adjacent to it so that it can form the shoulder.For example, the retaining projection can be designed as a projection projecting from a flat section thereof, or as the base of a recess provided in a flat section, which thus projects from the base of the recess, or as the edge of a hole in a section, by projecting from an adjacent edge region of the hole in a direction delimiting the hole. It is essential that the retaining projection is a shoulder or forms one against which the retaining spring rests in the operating state, so that the fixation of the base module and functional module to one another is ensured. The actuating element is fixed to the other module, wherein, starting from the operating state, the functional module can be detached from the base module by actuating the actuating element with deflection of the retaining spring, thus realizing a release state.In an embodiment in which the functional module is one module and the base module is the other module, the retaining spring is thus encompassed by the second part of the fastening device and the actuating element is encompassed by the first part of the fastening device. While in the operating state, detachment of the functional module from the base module is prevented due to the retaining spring abutting the retaining projection, in the release state the retaining spring is deflected by the actuation of the actuating element in such a way that, starting from the release state, the functional module can be detached from the base module without further actuation of the actuating element. Thus, starting from the operating state, the functional module can preferably only be detached from the base module without causing damage if the actuating element has previously been actuated and the release state has been realized by actuating the actuating element.

[0007] Generally preferably, the actuating element, at least with an actuating section encompassed by it, by means of which it can be actuated by a user, is provided on the upper side of the base module. Generally preferably, the actuating element projects vertically beyond the upper side of the functional module and beyond the upper side of the base module in the operating state. Generally preferably, the actuating element can be actuated from an outer side of the luminaire in the operating state. Thus, the actuating element is preferably accessible from an outer side of the luminaire in the operating state. Generally preferably, the actuating element is spaced from both the transverse sides and the vertical underside as well as the longitudinal sides of the luminaire in the operating state.The term "longitudinal side" refers to a side that delimits the luminaire along the longitudinal direction, while the term "transverse side" refers to a side that delimits the luminaire along the transverse direction. The system according to the invention offers the particular advantage that the fastening device can be provided in a particularly simple manner so that it is easy to operate, a functional fastening device can be easily provided for different functional modules with different functionalities and, in particular, different geometric configurations, and the realization of the luminaire can be particularly simplified.By departing from conventional approaches, by providing a first part of the fastening device on the base module and a second part of the fastening device on the functional module, these two parts can be easily fixed to the respective module in advance and specifically configured to each other so that a functional fastening device is realized by joining the functional module and the base module. In one embodiment, the actuating element is fixed to the other module by a guide device, which determines the mobility of the actuating element relative to this module to a predefined path of movement.The actuating element, in particular the actuating unit, of the fastening device is thus fixed to the other module in such a way that the actuating element is still movable relative to this module in this fixed state, although its mobility is limited to a movement path defined by the guide device. Generally speaking, the movement path is preferably a linear movement path. In one embodiment, the movement path is a linear movement path running along the longitudinal direction. In one embodiment, the guide device defines a start and an end of the movement path, wherein in the fixed state the actuating element is only movable relative to the other module between the start and end of the movement path.The guide device is provided by a corresponding configuration of the actuating element and the other module and / or by the corresponding configuration of the actuating element, the other module, and at least one intermediate element arranged between them. For example, the actuating element can have a groove into which a spring of the other module engages. For example, a guide element and / or at least one further element, for example a fixing element and / or a lighting module fixed to the other module or a cover of such a lighting module, can be provided as such an intermediate element.

[0008] Generally, the actuating unit preferably has a guide element that is encompassed by the guide device and that, in the operating state, is movably guided relative to the modules. In particular, the guide element has a recess into which the actuating element engages with a guide projection, and / or the actuating element has a recess into which the guide element engages with a guide projection. Of course, several such recesses can be provided, each of which is assigned a guide projection.For example, the guide element can be arranged in a guide space formed between the modules in the operating state, wherein the actuating element dips into a recess in the guide element with a guide projection and / or the guide element dips into a recess in the actuating element with a guide projection and wherein the guide element is fixed in its position relative to the modules in such a way that it can only move along a predefined movement path, as explained above, wherein the immersion of the at least one guide projection in the respectively assigned recess ensures that the actuating element is held in a fixed position relative to the guide element during the movement path, so that the movement of the actuating element along the movement path necessarily leads to a defined movement of the guide element.For example, the guide projection can be locked into the recess. In one embodiment, the system comprises a fixing element that is fixed in position relative to the other module, both in the operating state and when the other module is detached from the one module. The fixing element is arranged in a guide space formed between the fixing element and the other module and is movable therein only along a predefined path of movement.

[0009] In one embodiment, the functional module has a receptacle on its upper side which is delimited by two transverse side regions of the functional module, the base module being arranged in the receptacle in the operating state and being arranged transversely between the two side regions. The functional module thus encompasses the base module transversally on both sides with its transverse side regions. The base module is preferably arranged in the receptacle with at least 70%, in particular at least 80%, in particular at least 90%, in particular 100% of its vertical extension length in the operating state, and preferably also with its entire transverse extension length. By the functional module at least predominantly, in particular completely, encompassing the base module, the functional module can also visually conceal the base module and thus contribute to a pleasing optical design of the luminaire.Generally speaking, the actuating element is preferably fixed to the base module and, in the operating state, is arranged at least in sections outside the receptacle of the functional module, in particular arranged vertically above the receptacle. This ensures particularly advantageous accessibility of the actuating element even in the operating state, i.e. when a light is being constructed. In one embodiment, the retaining spring rests against the retaining projection within a vertical extent of the receptacle, such that the contact surface of the retaining spring, over which it rests vertically against the retaining projection, is arranged within the extent of the receptacle, in particular within the receptacle. This allows interaction between the retaining spring and the retaining projection to be protected and designed to be robust, and at the same time the retaining spring and the retaining projection can be laterally concealed by the functional module.

[0010] In one embodiment, the system has a first additional functional module which has a greater transverse width and / or greater vertical height than the functional module. The additional functional module and the functional module therefore differ in their geometric dimensions. In one embodiment, the functional module is designed as a dummy module which, in the operating state, covers an underside of the base module and in particular the transverse sides of the base module, but on which no electrical functional element is arranged. In contrast, the additional functional module can have a receiving space in which at least one electrical functional module, in particular an LED module, is arranged. In comparison to the functional module, the additional functional module preferably extends beyond the functional module with the extension length of the receiving space.The additional functional module is therefore preferably designed as a light-generating module, whereas the functional module is designed purely as a cover module for cladding the base module. Generally speaking, each additional functional module designed as a light-generating module preferably has a trough-shaped section which has a U-shaped cross-section which is open at the bottom. In comparison to a functional module designed as a dummy module, it preferably extends vertically beyond the latter with the trough-shaped section. Generally speaking, the receiving space is formed by the trough-shaped section. The functional module preferably has a U-shaped section whose cross-section is open at the top and which is designed to receive the base module in the operating state of the system.Preferably, the U-shaped base of the U-shaped section forms the trough base of the trough-shaped section, which forms the receiving space, such that the receiving space is separated by the U-shaped base from the receptacle provided for the base module. Preferably, the trough-shaped section has two side walls extending vertically downwards from its trough base, wherein the U-shaped cross section of the trough-shaped section is formed by the trough base (base of the U) and the two side walls (legs of the U). Preferably, the side walls are free of projections, smooth, or undercut-free on their mutually facing sides, which delimit the interior of the trough-shaped section, such that a receiving space that is as large as possible in its transverse width and can be flexibly equipped is ensured.In a first alternative operating state, which can be implemented as an alternative to the operating state and in which a first alternative light is implemented, the first alternative functional module is fixed to the base module instead of the functional module, wherein a second part of a first alternative fastening device is fixed to the first alternative functional module, the first part of which is formed by the first part of the fastening device and by means of which the first further functional module is held to the base module in the alternative operating state. In the first alternative operating state, a first alternative fastening device is thus implemented, by means of which the first alternative functional module is held to the base module, wherein this first alternative fastening device has the same first part as the fastening device.Generally, the first alternative fastening device and the fastening device are preferably configured identically to one another. In the preferred embodiment, the first alternative functional module, with the second part of the first alternative fastening device attached thereto, can be moved toward the base module to implement the first alternative operating state. The first part of the fastening device is fixed to the base module. When the base module and the first alternative functional module are arranged side by side, the first alternative fastening device is implemented, and the first alternative functional module is held on the operating module.In a further preferred embodiment, the system has a second further functional module which has a greater transverse width and / or greater vertical height than the functional module and than the first further functional module, wherein in a second alternative operating state which can be implemented as an alternative to the operating state and in which a second alternative light is implemented, the second further functional module is fixed to the base module instead of the functional module, wherein a second part of a second alternative fastening device is fixed to a second further functional module, the first part of which is formed by the first part of the fastening device and by means of which the second further functional module is held to the base module in the second alternative operating state.By providing a first and a second additional functional module, functionality can be increased in a simple manner, with each of these additional functional modules being held on the base module by the same first part of the fastening device that is fixed to the base module. For example, the receiving spaces of the first and second additional functional modules can differ in volume. For example, a different lighting module is arranged in the receiving space of the first additional functional module than in the receiving space of the second additional functional module. For example, the lighting module of the second additional functional module can have twice as many LEDs as the lighting module of the first additional functional module.In one embodiment, the first additional functional module has a receptacle on its upper side which is delimited by two transverse side regions of the additional functional module, wherein the base module is arranged in the receptacle in the first alternative operating state and is arranged transversely between the two side regions. Correspondingly, the second additional functional module can have a receptacle on its upper side which is delimited by two transverse side regions of the second additional functional module, wherein the base module is arranged in the receptacle in the second alternative operating state and is arranged transversely between the two side regions. The arrangement of the base module in the receptacle of the respective additional functional module can be designed as explained with reference to the functional module.In general, a same section of the base module is preferably arranged in the operating state in the receptacle of the functional module and in the first alternative operating state in the receptacle of the first further functional module and in particular in the second alternative operating state in the receptacle of the second further functional module.

[0011] In one embodiment, the retaining spring has a spring leg on which a projection is provided, with which it rests vertically against the retaining projection in the operating state. The spring leg has a guide section which, in the operating state, is guided in a guide receptacle encompassed by the actuating unit. The guide section and projection are thus formed jointly by one retaining leg and are movement-coupled to one another. Preferably, the actuating element is connected to the guide section in the operating state and in the release state, wherein, starting from the operating state, the release state can be realized by a movement of the actuating element relative to the two modules.Due to the connection of the actuating element to the guide section, the movement of the actuating element thus entails a movement of the guide section, by means of which the guide section can be steered such that, starting from the operating state, the release state can be reached by moving the actuating element. Preferably, the guide section bears against the actuating element in both the operating state and the release state. Preferably, the position of the guide section is determined by the position of the actuating element both in the operating state and in the release state. In one embodiment, the guide receptacle is formed by the actuating element.In one embodiment, the system comprises a guide element, wherein the guide receptacle is formed by the guide element and the actuating element is fixed in its position relative to the guide element, wherein preferably the guide element is encompassed by the guide device as explained and has a recess into which the actuating element engages, in particular in a latched manner, with a guide projection.

[0012] In one embodiment, the actuating unit has a fixing element that is fixed in position to the modules in the operating state and in the released state, and that forms a guide by means of which the actuating element is guided during its movement between the operating state and the released state. The guide is preferably designed as a linear guide, in particular as a linear guide extending along the longitudinal direction, which defines the movement of the actuating element to a linear movement along the longitudinal direction. Generally, the described guide device is preferably formed at least partially by the fixing element and thus by the guide formed by the fixing element.In one embodiment, the actuating element and / or the guide element is arranged between the fixing element and the other module in the operating state and preferably also in the released state, and its mobility relative to the other module is determined by the guide. Preferably, a guide space extending in the vertical direction is formed between the fixing element and the other module, in which the actuating element and / or the guide element is arranged.

[0013] In one embodiment, the actuating unit has a return spring connected to the actuating element, which counteracts the movement of the actuating element between the operating state and the release state with a return force. The connection between the actuating element and the return spring can be direct or indirect. The actuating element and the return spring can be formed integrally with one another or comprised of separate components. The connection can be a material connection, a locking connection, or a connection that is ensured by the return spring simply bearing against the actuating element with its return spring force.The provision of the return spring offers the particular advantage that, upon movement of the actuating element from the operating state to the release state, by applying an external force and subsequently terminating the action of the external force, it can be ensured that the actuating element automatically returns to the position it occupied in the operating state. Generally, the return force is preferably provided in such a way that, due to the return force, the actuating element automatically returns from its position in the release state relative to the other module to its position in the operating state relative to this module. In one embodiment, the return spring is encompassed by the guide element.In particular, the return spring can be integrated integrally into the guide element, wherein the guide element is designed as a plastic component, in particular an injection-molded component. The guide element is preferably arranged between the fixing element and the actuating element. The guide element is preferably guided by the guide of the fixing element, and the actuating element is guided relative to the fixing element by means of the guide element. In one embodiment, the guide element is guided between the fixing element and the other module. Because the guide element comprises the return spring and the actuating element is guided by means of the guide element, the return spring comprised by the guide element can act on the actuating element particularly easily, as explained.The return spring preferably has a support section with which it rests against the fixing element, and a pressing section with which it rests against the actuating element, wherein in the operating state and in the released state the return spring exerts a spring force acting between these two sections, with which it presses on the one hand against the fixing element and on the other hand against the actuating element, in particular pressing along the longitudinal direction. Generally preferably the return spring has at least one spring section which in the operating state of the system rests against a counter section which is formed by the actuating unit or by one of the modules, i.e. base module or functional module. The spring section is thus arranged in the operating state between the counter section and the actuating element in order to provide at least part of the explained restoring force acting on the actuating element.The return spring preferably has a plurality of spring sections, each of which, in the operating state, bears against a respective associated countersection of the actuating unit or one of the modules. The return spring preferably has at least a first and a second spring section, wherein the first spring section bears against a first countersection and the second spring section bears against a second countersection, and wherein the countersections are spaced apart from one another along a direction of movement of the movement performed by the actuating element when changing between the operating state and the release state, and point in opposite directions along the direction of movement. Thus, the actuating element is arranged at least in sections between the first and second spring sections along the direction of movement.Preferably, the first spring section forms a restoring force on the actuating element when the actuating element moves from the operating state in a first direction along the direction of movement, whereas the second spring section forms a restoring force on the actuating element when the actuating element moves from the operating state.

[0014] Operating state, a restoring force is exerted on the actuating element in a second direction along the direction of movement, opposite to the first. In the operating state, the actuating element is preferably acted upon by the first and second spring sections in opposite directions along the direction of movement, so that a deflection of the actuating element starting from the operating state in any direction along the direction of movement is opposed by a spring restoring force which must be overcome to achieve the deflection. This can ensure particularly good guidance of the actuating element and / or a particularly controlled application of the restoring force during the movement of the actuating element between the operating state and the release state.Particularly preferably, two first counter-sections and two second counter-sections are provided, wherein the first counter-sections are spaced from the second counter-sections, as explained in relation to the first and second counter-sections, along the direction of movement of the actuating element and point in opposite directions along the direction of movement. Thus, two first spring sections are preferably provided on a first side of the actuating element and two second spring sections are preferably provided on a second side of the actuating element, wherein each of the first spring sections is assigned one of the first counter-sections and each of the second spring sections is assigned one of the second counter-sections, so that the actuating element is arranged between the first spring sections and the second spring sections with respect to the direction of movement and is clamped between them.In one embodiment, the counter section or counter sections are formed by the explained fixing element of the actuating unit. In one embodiment, the at least one spring section rests with a first end on the counter section and with a second end directly on the actuating element or indirectly on the actuating element, for example directly on the guide element and indirectly via the guide element on the actuating element. Generally preferably, the return spring is encompassed by the guide element and thus formed integrally in one piece with the guide element. In one embodiment, the spring sections of the return spring are encompassed by the guide element and press on the one hand against the counter section and on the other hand by means of a pressing section encompassed by the guide element against the actuating element.In another embodiment, the actuating element is held in the guide element in the operating state without the return spring or the spring sections exerting a spring force on the actuating element. For example, for this purpose the actuating element can be arranged in a recess in the guide element, whereas the return spring or the spring sections act on the guide element in the operating state without this exerting a spring force on the actuating element, for example by the guide element and thus also the actuating element being held in a rest position by the return spring or the spring sections in the operating state, wherein a restoring force is only exerted on the guide element upon deflection starting from the operating state or starting from the rest position by the return spring or the spring sections, which then also acts on the actuating element.Generally preferably, the explained first spring sections are spaced apart from one another in the transverse direction and the explained second spring sections are spaced apart from one another in the transverse direction. Generally preferably, the actuating unit is designed such that, starting from the operating state, the release state can be achieved by two different movements of the actuating element, wherein the two directions of movement each occur in opposite directions of movement. With such a design of the actuating unit, the provision of two counter sections on two, as explained, different sides of the actuating element, relative to the direction of movement, has proven particularly advantageous, since the return spring thereby counteracts a return force both a movement in a first direction of movement and a movement in a second direction of movement opposite to the first.In one embodiment, the guide of the fixing element and the guide element engage vertically behind each other in the operating state and in the released state. This makes it particularly advantageous and easy to achieve a relative position of the fixing element and the guide element, or to fix the relative position of the two to each other on a defined path of movement. Furthermore, the actuating element and the guide element preferably engage vertically behind each other in the operating state and in the released state, so that the actuating element is particularly advantageously fixed to a defined path of movement relative to the fixing element and thus also relative to the other module, by vertically engaging behind the fixing element and guide element on the one hand, and the actuating element and guide element on the other.

[0015] In one embodiment, the actuating element and the other module and / or the actuating element and an intermediate element fixed in position to the other module have corresponding guide contours, wherein the actuating element is guided relative to the other module during its movement between the operating state and the release state by an interaction of the guide contours. In particular, the guide device explained can comprise the guide contours. Preferably, the guide device comprises, on the one hand, the guide element and, on the other hand, the corresponding guide contours, wherein, in particular, the corresponding guide contours extend outside the guide element. The intermediate element can be any element attached to the module.Generally, the intermediate element is preferably designed as a lighting module, so that such a lighting module, which is fixed to the other module, in particular fixed to the base module, can simultaneously form part of the guide device. For example, the cover of a lighting module can form the guide contour corresponding to the guide contour of the actuating element. Preferably, the actuating element is guided linearly relative to the other module by the interaction of the guide contours, in particular linearly guided along the longitudinal direction. Particularly preferably, the actuating element is fixed to the module by the interaction of the corresponding guide contours. Particularly preferably, the guide contours engage behind one another vertically in the operating state and the released state.

[0016] In one embodiment, the spring unit is fixed to one module and the actuating unit to the other module. Generally, the spring unit is preferably fixed to the functional module and the actuating unit to the base module, so that the spring unit is encompassed by the second part of the fastening device and the actuating unit is encompassed by the first part of the fastening device, wherein the spring unit preferably forms the second part of the fastening device and the actuating unit forms the first part of the fastening device.

[0017] In one embodiment, a deflectable securing device, in particular an elastically deflectable securing device, is provided between the other module and the actuating element. The securing device forms a stop for the actuating element to prevent movement of the actuating element relative to the other module. By deflecting the securing device, the stop can be removed from the actuating element to release the mobility of the actuating element relative to the other module. In the operating state, the securing device is preferably in its rest position, i.e. undeflected, so that in the operating state the actuating element is only movable relative to the other module if the securing device has previously been deflected.The securing device can, for example, be a projection formed by the fixing element and provided on an elastic arm, which engages in a receptacle provided on the actuating element and can be removed from this receptacle by deflection. The securing device can also be designed in another way, such as a stop that can be elastically moved away from the actuating element. Generally, the actuating element is preferably made of a plastic, in particular as an injection-molded part. Generally, the guide element and / or fixing element and / or intermediate element are preferably made of plastic, in particular as a plastic part.

[0018] In one embodiment, the actuating unit has at least one holding space, wherein the system comprises a plurality of electrical conductors which, in the operating state of the system, are arranged and held in the holding space. The actuating unit can thus particularly advantageously serve, in addition to its actual functionality described here in connection with embodiments of solutions according to the invention relating to the actuation of the spring unit or its holding spring, furthermore for guiding electrical conductors. In one embodiment, the holding space is formed by a plurality of channels arranged transversely next to one another. The holding space is thus preferably defined by the channels or the holding space corresponds to the plurality of channels. In another embodiment, the holding space is formed as a transversely continuous channel.In one embodiment, the holding space is equivalent to a plurality of transversely arranged channels next to one another, wherein the system has a plurality of electrical conductors, each arranged in one of the channels and held therein. In another embodiment, the holding space is not equivalent to a plurality of transversely arranged channels next to one another, wherein the system has a plurality of electrical conductors that are arranged in the holding space and held therein, wherein they are in particular each arranged in one of the channels and held therein. The holding space can, for example, comprise the plurality of transversely arranged channels or be at least partially formed by them. In any case, the holding space ensures that a position of the electrical conductors is fixed with respect to the transverse direction.Particularly preferably, the holding space further defines the position of the conductor wires along the vertical direction and / or along the longitudinal direction. The electrical conductors can be secured in the holding space, for example, by clamping each of the electrical conductors into a respective one of the multiple channels assigned to it, or alternatively, by the holding space forming a boundary for the electrical conductors on both sides along the transverse direction and on both sides along the vertical direction. For example, the holding space can have a wall extending around the longitudinal axis.For example, the holding space can be formed by a plurality of transversely arranged channels which have a channel base at one vertical end which defines a position of the electrical conductors in the channels, wherein the channels are open on the opposite vertical side and the electrical conductors are clamped in the channels.In another embodiment, the holding space is formed by a plurality of transversely arranged next to one another or by a transversely continuous channel, wherein the holding space is delimited by a holding space wall running around the longitudinal direction, which fixes the position of all electrical conductors arranged in the holding space to a position within the holding space and thus prevents the electrical conductors from escaping from the holding space perpendicular to the longitudinal direction, wherein in particular the holding space has no subdivision within the holding space wall by which the position of the electrical conductors within the holding space relative to one another is fixed. In one embodiment, the holding space is formed between the fixing element and a holding element. Preferably, the fixing element and the holding element are detachably connectable to one another and are detachably connected to one another in the operating state.For example, the holding element and fixing element can have corresponding locking devices by means of which they are releasably locked to one another in the operating state. Preferably, the fixing element forms a first section of a wall of the holding space which runs around the longitudinal direction, and the holding element forms a second section of the wall of the holding space, wherein the two sections together run closed around the longitudinal direction. In one embodiment, the fixing element forms a plurality of transversely arranged channels next to one another, which are open on one vertical side and have a channel base on the opposite side, wherein the holding element bridges the channels and closes them at their open vertical end. In one embodiment, the fixing element and holding element together form a channel which is continuous in the transverse direction.For example, the fixing element can delimit the channel on a first vertical side, and the retaining element can delimit the channel on an opposite second vertical side. In one embodiment, the fixing element and the retaining element are fixed to the base module. Preferably, the retaining element is fixed to the base module exclusively indirectly via the fixing element. In one embodiment, the base module has a U-shaped section with a U-shaped base and U-shaped legs, wherein the fixing element and the retaining element are arranged on the U-shaped base of the base module and fixed thereto.

[0019] In one embodiment, the actuating unit has a first holding space formed between the fixing element and the holding element, as well as a second holding space formed at least in part by the holding element and separated from the first holding space by the holding element. Preferably, the two holding spaces are spaced apart from each other by the holding element with respect to the vertical direction. By providing the first and second holding spaces, electrical conductors, each with different functionalities, can be guided in the various holding spaces.Particularly preferably, the holding element can be designed as a modular supplementary component for the fixing element, wherein in a first operating state a first light can be realized, wherein only electrical conductors are arranged in the first holding space, and wherein in a second operating state a second light is realized, in which a first group of electrical conductors is arranged in the first holding space and a second group of electrical conductors is arranged in the second holding space. Preferably, the second holding space is formed by clamping legs of the holding element, to which electrical conductors can be clamped. Preferably, the conductors are designed as conductor wires sheathed with insulation. Preferably, each conductor is clamped in the channel assigned to it in each case and held therein by this.In general, the electrical conductors are preferably arranged and held unchanged in the holding space, in particular in one of the channels, both in the operating state and in the released state. The system preferably has a plurality of actuating units which, in the operating state, are arranged one behind the other in the longitudinal direction and spaced from one another. Each actuating unit, in particular the fixing element of each actuating unit, has a holding space, in particular a plurality of channels arranged transversely next to one another. Preferably, all actuating units, in particular all fixing elements, are of identical design. By arranging a plurality of actuating units or fixing elements one behind the other along the longitudinal direction, the electrical conductors can be held particularly advantageously over the entire longitudinal extent of the base module and the functional module.Generally, the fixing elements, in particular the entire actuating units, are preferably fixed to the base module. Generally, at least two, in particular exactly two actuating units and the same number of spring units are provided within the longitudinal extension of the functional module when implementing an operating state with multiple functional modules within the longitudinal extension of each functional module. This can ensure particularly reliable positional fixation of the functional module to the base module in the operating state. By providing exactly two actuating units or spring units, such a functional module can be particularly easily released from the base module starting from the operating state by generating a release state of such a system by actuating the actuating elements of the two actuating units as explained.

[0020] In one embodiment, the system has a positioning element that is fixed to the base module in the operating state of the system and bridges a section of the base module. Preferably, the base module has the retaining projection against which the retaining spring rests in the operating state, wherein the positioning element is fixed to the retaining projection or rests against it in the operating state. Preferably, the positioning element is resiliently pressed between the retaining projection and a U-shaped base of the base module in the operating state. Preferably, the positioning element is made of plastic. In one embodiment, the positioning element has a cross-section in the manner of an H-shape. The transverse crossbar of the H-shape can ensure bridging of the section of the base module, and the vertical webs of the H-shape can enable simple fixation of the positioning element to the base module.In the operating state, the positioning element preferably bridges a section of the U-shaped base of the base module, in particular at least 80% of the transverse extension length of the U-shaped base of the base module. Particularly preferably, in the operating state, electrical conductors of the system are routed between the section of the base module and the positioning element. Preferably, the positioning element bridges said section of the base module with a positioning element section that is spaced apart from said section of the base module along the vertical direction. This positioning element section is preferably formed by the transverse web of the H-shape of the positioning element. The positioning element can be particularly advantageously fixed to the base module in a simple manner, for example by being releasably locked to the base module.As a result, the positioning element can advantageously ensure that electrical conductors arranged on the base module are guided at individual points along the longitudinal extent of the base module, if necessary. In one embodiment, the actuating unit has at least one holding space, which can be designed as explained in relation to advantageous embodiments. The electrical conductors are preferably arranged both in the holding space and also guided between the positioning element and the aforementioned section of the base module. In one embodiment, electrical conductors are arranged in the first holding space and guided between the positioning element and the section of the base module; in one embodiment, electrical conductors are arranged in the first and in the second holding space, wherein these electrical conductors are each guided between the positioning element and the aforementioned section of the base module.Particularly preferably, the system has a plurality of positioning elements which, in the operating state, are fixed to the base module at a distance from one another along the longitudinal direction. Preferably, the system has a plurality of actuating units which are fixed to the base module at a distance from one another along the longitudinal direction. Preferably, at least between some, in particular between each pair of actuating units adjacent in the longitudinal direction, a positioning element is arranged and fixed to the base module. Particularly preferably, a group of electrical conductors runs through each of the holding spaces of a plurality of actuating units arranged one behind the other along the longitudinal direction and is guided between the base module and a plurality of positioning elements arranged between each two actuating units.

[0021] Generally, the actuating unit, in particular the fixing element of the actuating unit, preferably has a plurality of holding arms that are clamped vertically between two vertically spaced-apart holding sections of the other module. Preferably, at least some of the holding arms of the fixing element are supported on the holding projection of the other module, against which, in the operating state, the retaining spring, which is fixed to one module, rests vertically, so that the holding projection forms the holding sections. This allows the system or a luminaire realized therefrom to be designed to be particularly compact.Preferably, the actuating unit, in particular the fixing element of the actuating unit, has a pair of holding arms on each transverse side, wherein the holding arms of each pair are spaced apart from one another along the longitudinal direction and a holding lug is provided on each holding arm, which presses vertically against one of the two aforementioned holding sections of the other module, wherein this holding section is preferably formed, as explained, by the holding projection against which the holding spring rests in the operating state. By providing these multiple holding arms, the holding arms can be designed to be sufficiently robust and sufficiently elastic, so that the fastening of the actuating unit or at least the fixing element of the actuating unit to the other module can be carried out particularly easily.Preferably, the vertically lower of the two spaced-apart holding sections of the other module is formed by the holding projection and the vertically upper of the two spaced-apart holding sections of the other module is formed by a U-bottom formed by the other module.

[0022] In one embodiment, the base module and the functional module each have a U-shaped section with a U-base and U-legs. In the operating state, the U-bases of the base module and the functional module are vertically spaced from one another, so that their respective U-legs extend from their respective U-base to the U-base of the other module. The interior space provided between the base module and the functional module in the operating state preferably extends at least partially between the U-bases of the base module and the functional module. Preferably, the U-legs of the base module are arranged within the U-shaped section of the functional module, so that the U-legs of the base module are arranged between the U-legs of the functional module, so that the functional module transversely encloses the U-shaped section of the base module on both sides. Generally, the U-bases extend along the transverse direction, i.e.transversely, between the U-legs, and the U-legs extend vertically upwards from the respective U-base. The described receptacle for the functional module is preferably formed by the U-shaped section. The receptacle can thus be designed in the manner of a U. In the operating state, the U-base of the functional module is preferably arranged vertically below the U-base of the base module. Accordingly, an upper side of the U-base of the base module preferably points vertically away from the U-base of the functional module. Accordingly, the underside of the U-base of the base module points vertically to the U-base of the functional module. The system preferably has electrical supply lines which, in the operating state, are arranged exclusively between the U-bases of the base module and the functional module and run in the longitudinal direction.The supply lines can in particular be formed by the electrical conductors explained, which in one embodiment are arranged on the actuating unit, in particular on the fixing element of the actuating unit. For this purpose, the fixing element of the actuating unit is preferably arranged on the underside of the U-shaped base of the base module. The actuating element of the actuating unit is preferably arranged on the top side of the U-shaped base. The guide element is preferably arranged between the U-shaped base of the base module and the fixing element. The U-shaped base preferably has passages through which the actuating element extends from the top side to the underside and inserts into a recess formed by the guide element, in particular inserts with its explained guide projection.

[0023] Generally preferably, the actuating element is arranged at least in sections on the upper side of the base module, in particular on the upper side of the U-shaped base module, and the actuating unit is arranged at least in sections below the base module, in particular below the U-shaped base module. The actuating element preferably extends predominantly on the upper side of the base module, but also in sections on the underside of the base module. In the operating state, the underside of the base module preferably faces the functional module. Generally preferably, the fixing element is arranged on the underside of the base module, in particular on the underside of the U-shaped base module. Generally preferably, the guide element is arranged on the underside of the base module, in particular on the underside of the U-shaped base module.Generally, the actuating element preferably extends vertically from the top to the bottom through a hole provided in the base module through the base module. In one embodiment, the U-shaped legs of the base module form a retaining lug of the base module, against which the actuating unit, in particular the fixing element of the actuating unit, bears vertically in a pressing manner in the operating state. The retaining lug can in particular form one of the above-explained retaining sections and / or the retaining projection of the other module, against which the actuating unit, in particular the fixing element of the actuating unit, bears vertically in a pressing manner with at least one retaining arm, whereby the actuating unit or the fixing element is clamped vertically or against which the retaining spring bears in the operating state.In one embodiment, the U-shaped legs of the functional module form a retaining lug of the functional module, against which the retaining spring bears vertically in the operating state, pressing against it. The retaining lug can thus ensure that the retaining spring is fixed relative to the functional module. Preferably, the functional module has two vertically spaced-apart retaining sections, one of which is formed by the explained retaining lugs of the U-shaped legs and the other by the U-shaped base of the functional module, with the retaining spring being vertically pressed between these retaining sections. In particular, the corresponding fixing projection, explained in more detail below, is formed by the retaining lug of the base module or the fixing module, depending on which of the two functions as the one module.

[0024] In one embodiment, the spring unit has at least one pair of fixing projections on each of its transverse sides, of which a first fixing projection, in the operating state, bears against a corresponding fixing projection of one module with a first vertical pressing force, and of which a second fixing projection bears against the corresponding fixing projection with a second vertical pressing force that is smaller than the first vertical pressing force, or is vertically spaced from the corresponding fixing projection. In an embodiment in which the one module is formed by the functional module, the corresponding fixing projection can be formed, for example, by a retaining lug provided on one of the U-legs.Because the spring unit has the aforementioned pair of fixing projections on each of its transverse sides, the first fixing projection can press against the corresponding fixing projection with a sufficient first vertical pressing force for reliable fixing, whereas the second fixing projection only comes into contact with the corresponding fixing projection with a sufficient vertical pressing force upon the application of a significant force. Thus, the staggered arrangement of the first and second fixing projections can ensure particularly reliable fixing of the retaining spring relative to the one module. Generally, the spring unit is preferably designed as a one-piece sheet metal spring.Generally preferably, the spring unit has a base section which runs along the transverse direction between its transverse sides and connects the two transverse sides to one another, wherein the base section is pressed vertically downwards against a pressing section of one module, whereas the first and second vertical pressing forces point vertically upwards and the fixing projections are thus pressed vertically upwards against the corresponding fixing projection by the respective vertical pressing force. The staggered arrangement of the fixing projections ensures that the action of a vertical relative force between the retaining spring and one module leads to an increase in the second vertical pressing force or to the contact of the second fixing projection against the corresponding fixing projection, generating a second vertical pressing force between the second fixing projection and the corresponding fixing projection.The generation of the second vertical pressing force by the action of the vertical relative force is ensured when, in the operating state, the second fixing projection is vertically spaced from the corresponding fixing projection. Preferably, during the action of the vertical relative force, which leads to an increase or creation of the second vertical pressing force, the first fixing projection continues to press continuously vertically against the corresponding fixing projection. Thus, upon increasing the acting vertical relative force, increasing support of the retaining spring relative to the one module can be ensured. Preferably, the spring unit has at least two such pairs of fixing projections on each of its transverse sides, which are spaced apart from one another in the longitudinal direction.Preferably, the distance provided between the two pairs is at least 30%, in particular at least 50%, in particular at least 70% of the longitudinal extension length of the spring unit.

[0025] In one embodiment, the retaining spring has a sharp-edged retaining shoulder with which it bears vertically against the retaining projection in the operating state. The retaining shoulder and the retaining projection preferably overlap transversely by at least 1 mm and less than 5 mm, in particular by less than 3 mm. As explained, the retaining spring preferably has a spring leg on which a projection is provided, wherein the projection forms the retaining shoulder. The provision of a sharp-edged retaining shoulder has the particular advantage that the retaining shoulder can claw into the retaining projection when a vertical relative force acts between the base module and the functional module. The particularly short overlap in the transverse direction also ensures easy deflection to reach the release state starting from the operating state.Generally preferably, the retaining spring has a spring leg on each of its transverse sides, which has such a projection or sharp-edged retaining shoulder. Generally preferably, the retaining spring is U-shaped, wherein the U-bottom forms the base section of the retaining spring and the U-legs form the spring legs of the retaining spring. Generally preferably, the fixing projections of the spring unit are formed by spring arms that extend vertically away from the base section of the retaining spring, wherein the fixing projections are spaced along the longitudinal direction from the respective spring leg that is arranged on the same transverse side as them.

[0026] In one embodiment, the system comprises an additional actuating element that can be used instead of the actuating element in the operating state or in at least one, in particular in any, alternative operating state. When used in the respective operating state, the actuating element and the additional actuating element form, with an actuating portion, a portion of an upper side of the luminaire, wherein the actuating portion of the actuating element has a different shape than the actuating portion of the additional actuating element. Apart from the different shape of their actuating portions, the actuating element and the additional actuating element can be functionally identical, so that the properties of the actuating element described for advantageous embodiments are preferably provided correspondingly in the additional actuating element.Because the system has two different actuating elements, each of which can be used as the actuating element in its respective operating state, the shape of the actuating section can be tailored to specific needs for the realization of luminaires each designed for a specific purpose. For example, the shape of the actuating section can be adapted to specific design requirements. For example, one shape can form actuating ribs on the top side of the actuating element, with which actuation is particularly easy, whereas another shape can be rounded on the top side to achieve special optical properties, in particular a visually appealing design and / or optical light guidance.

[0027] In one embodiment, the system has an indirect lighting module comprising an LED light source and a cover. In the operating state, the indirect lighting module is arranged on an upper side of the base module and fixed relative to it and designed to emit light vertically upwards. Regardless of whether a direct lighting module is provided on the functional module and / or such a direct lighting module is provided between the base module and the functional module, lighting can be provided by the provision of the indirect lighting module once the operating state and thus a luminaire has been implemented. Indirect lighting is based on light being emitted vertically upwards, that it is beamed as intended onto the ceiling of a room on which a luminaire is mounted, and from there, and thus indirectly, into the room.The base module preferably has at least one feedthrough which extends from an underside of the base module to the top side and through which an electrical supply line for supplying the indirect lighting module runs in the operating state. As a result, the indirect lighting module can advantageously be supplied by supply lines which are arranged in the interior space enclosed between the base module and the functional module and preferably run along the longitudinal direction. Generally preferably, the electrical supply line is connected in the operating state to a supply line running longitudinally within the interior space. Generally preferably, the system further comprises a direct lighting module which is supplied by the supply line in the operating state.Preferably, the direct lighting module is attached to the functional module and is movable together with the functional module independently of the base module when the base module and functional module are detached from each other. The supply lines running in the interior are thus preferably provided for supplying both the direct lighting module, which is attached to the functional module, and the indirect lighting module, which is attached to the base module.

[0028] In one embodiment, the base module has mounting projections on its upper side, which, when the indirect lighting module is in operation, press vertically against a section of the upper side of the base module arranged underneath. Preferably, the indirect lighting module is held in place by means of the mounting projections on the upper side of the base module. Preferably, the mounting projections press against the cover of the indirect lighting module in the operating state. The base module preferably has the described feedthrough through which an electrical supply line runs, with the indirect lighting module completely covering the feedthrough in the operating state.Preferably, the mounting projections each extend from a transverse side wall section assigned to them toward a transverse center of the base module, with a cable duct being formed vertically between each mounting projection and the underlying section of the top side of the base module, in which at least one cable is arranged. The indirect lighting module is preferably supplied by the cable. The cable can be particularly easily inserted into the cable duct and protected by the respective mounting projection, which vertically covers it.

[0029] In one embodiment, the actuating element with the actuating section is designed to correspond to a top side section of the indirect lighting module, wherein the actuating section extends above the top side section in the operating state, and during the actuation of the actuating element, by which the release state can be reached starting from the operating state, the actuating section is movable along the top side section, in particular along the longitudinal direction. In the particularly preferred embodiment, the actuating element with its actuating section is thus specifically designed to correspond to the top side section of the indirect lighting module, so that it can extend above the indirect lighting module and is thus easily accessible and actuated by a user.Preferably, only the actuating section of the actuating element, but not that of the additional actuating element, is designed to correspond to the upper side section of the indirect lighting module. Preferably, the actuating section of the actuating element is designed to be translucent. Preferably, the actuating section of the actuating element is designed to be more translucent than the actuating section of the additional actuating element. Preferably, the actuating section of the actuating element and a section of the cover of the indirect lighting module adjacent to the upper side section are designed to be identically light-directing. For example, the actuating section and the section of the cover adjacent to the upper side section can each be lens-like or prism-like.By designing the actuating section and the section of the cover adjacent to the top section with identical light-directing properties, the most homogeneous light emission from the top of the luminaire upwards can be achieved during operation of the luminaire. Generally, the light-conducting and light-directing properties of the actuating section of the actuating element differ from those of the actuating section of the additional actuating element.

[0030] In one embodiment, the system comprises a direct lighting module which, in the operating state, is arranged outside the interior in a receiving space formed by the functional module and which is designed to emit light vertically downwards. Preferably, the receiving space is arranged vertically below the interior and / or transversely next to the interior. Preferably, the direct lighting module comprises an LED lighting source. In one embodiment, the system comprises an indirect lighting module and a direct lighting module, each of these lighting modules having an LED lighting source assigned to it, wherein, in the operating state of the system, the lighting sources assigned to the two lighting modules emit light in opposite directions and / or wherein only the lighting source assigned to the direct lighting module is arranged in the receiving space, whereas the lighting source assigned to the indirect lighting module is arranged outside the receiving space.By providing such a receiving space in which the direct lighting module is provided, the functional module can be adapted to requirements in a particularly targeted manner, regardless of its interface formed relative to the base module, since the receiving space can extend independently of the requirements demanded by the interface and can thus be designed to correspond to a direct lighting module required for the required light emission. Generally speaking, the system preferably has various functional modules which have different receiving spaces, each of which can be alternatively attached to the base module to implement the operating state, as explained here, wherein in the respective operating state the receiving space of the various functional modules is each arranged in a different position relative to the base module or extends over a different extension range relative to the base module.

[0031] In one embodiment, the system has at least two base modules and a coupling, wherein the base modules are connected to one another by the coupling in the operating state. The invention generally proposes, and thus also independently of other solutions disclosed here, but particularly advantageously combined with them, a system with two base modules and a coupling for connecting the base modules, wherein in particular the base modules and the coupling each have a U-shaped cross-section perpendicular to the longitudinal direction and the coupling is arranged within the U-shaped cross-sections of the base modules in the operating state. The base modules can have properties that are also described here in connection with other solutions described relating to the base modules. The base modules are preferably of identical design. The coupling is preferably arranged in the interior in the operating state and connects the two base modules to one another.The coupling preferably has two groups of lateral projections on each transverse side, the groups being vertically offset from one another. Each of the two groups of projections rests transversely on an inner side of each of the two base modules, which inner side is assigned to the respective transverse side. By offsetting the groups vertically from one another, a particularly good fixation of the two base modules by the coupling can be ensured. Each of the groups preferably has at least two lateral projections spaced apart from one another in the longitudinal direction, one of which in the operating state rests transversely on one of the base modules. In the operating state, each group of projections preferably presses against a respective mating section of each of the two base modules, which is assigned to it.The counter-section can in particular be formed by the explained inner side of the respective base module, which is assigned to the respective transverse side of the coupling. In one embodiment, one of the group of projections presses along the vertical direction against a corresponding counter-section of each of the two base modules. Preferably, the respective projection of one group of the coupling, which presses against a specific counter-section of a specific one of the two base modules in the vertical direction, presses against the same counter-section against which the actuating unit also presses. Thus, the actuating unit and projection press against the same counter-section of the base module. The properties described regarding the pressing of the actuating unit can therefore apply to the counter-section. The actuating unit and the projections are spaced apart from one another along the longitudinal direction.This counter-section is preferably formed by the retaining projection of the base module, wherein the base module forms the other module to which the actuating element is fixed. In the operating state, the coupling is preferably pressed vertically and transversely relative to both base modules by means of the lateral projections and is furthermore screwed relative to both base modules, defining a relative position of the base modules to one another in the longitudinal direction. The system therefore preferably further comprises such a screw. In the operating state, the screw is preferably screwed into the U-shaped bottoms of the U-shapes of the coupling and base modules. The screw connection can ensure particularly simple and particularly robust additional fixing. In this way, sufficient fixing of the base modules can be ensured even by means of a short or small coupling.

[0032] In one embodiment, the coupling has a U-shaped cross-section with a U-base and two U-legs extending vertically away from the U-base, wherein the lateral projections are formed by the U-legs. In one embodiment, the coupling is produced from a sheet metal by forming, and the lateral projections are each formed by a laterally extended tab or an embossing. Preferably, the U-legs extend vertically at their vertical ends pointing away from the U-base beyond the group of lateral projections that is further vertically spaced from the U-base, in particular in the operating state beyond the counter-section against which this group of lateral projections presses in a vertical direction away from the U-base. Thus, the coupling has a vertical extension length of its U-legs that is longer than the distance of the end of its lateral projections that is furthest vertically from the U-base.In the operating state, the U-shaped legs preferably rest against the base modules with their vertical end regions in a vertical region that is further vertically spaced from the U-shaped base than the lowest end of the side projections. This considerable vertical length can ensure particularly high stability.

[0033] In one embodiment, the coupling has a vertically projecting centering projection and each of the base modules has a vertically recessed centering recess, wherein the centering projection is arranged in the centering recesses of both base modules in the respective operating state. Preferably, the transverse center of the coupling and each of the base modules runs through the centering projection and the respective centering recess in the operating state. Accordingly, the coupling can of course have a vertically recessed centering recess and each of the base modules can have a vertically projecting centering projection, wherein the centering projections of both base modules are arranged in the centering recess in the respective operating state.Centering recess and centering projections allow for particularly advantageous, precise alignment of the coupling to the two base modules along the transverse direction. Preferably, the centering projection and centering recesses or the centering projections and centering recess can be engaged by sliding the base module onto the coupling from two opposite sides along the longitudinal direction. This makes it particularly easy to connect the two base modules to one another using the coupling. Generally, each base module preferably has a U-shaped section, with the centering projection or centering recess formed by the respective base module being formed in the U-bottom of the U-shape. Generally, the U-shaped section of the base module can form the entire base module.

[0034] In one embodiment, the system has multiple actuating elements and multiple retaining springs. Each of the actuating elements is assigned to a retaining spring. In the operating state, at least two retaining springs are arranged on one module and at least two actuating elements on the other module. Each retaining spring is assigned to exactly one actuating element. The respective actuating element is designed to deflect the retaining spring assigned to it to achieve the release state. Thus, by actuating or moving the actuating element, as explained, the retaining spring can be deflected such that the release state is reached. To achieve the release state of the system, all actuating elements that are each assigned to a retaining spring of a same module are preferably actuated, so that one module can be easily removed from the other module starting from the release state.

[0035] In one embodiment, the system comprises a plurality of fixing elements, each of which is assigned to precisely one actuating element. Preferably, the other module comprises a plurality of positioning recesses arranged one behind the other in the longitudinal direction, and each of the fixing elements comprises a positioning projection. Each of the fixing elements can be arranged with its positioning projection in each of the positioning recesses and can thereby be fixed in position relative to the other module. Preferably, each of the fixing elements can comprise, in addition to the positioning projection, the described retaining arms, with which it is fixed relative to the other module in the operating state.By providing positioning recesses arranged one behind the other in the longitudinal direction and by correspondingly designing each fixing element with its positioning projection, the fixing elements can be inserted into the positioning recess in a targeted manner as required, with their positioning projections being aligned in a targeted manner, so that their longitudinal position is determined by the interaction of the positioning projection and the positioning recess. Preferably, the system comprises a plurality of functional modules differing in their longitudinal extension length, with the shortest of these functional modules having a defined longitudinal extension length and all of the other modules being an integer multiple of this defined longitudinal extension length. This makes it particularly easy to produce a luminaire comprising a plurality of functional modules arranged one behind the other, each of which has different functions.Preferably, two positioning recesses adjacent in the longitudinal direction are spaced apart from each other by a longitudinal distance, wherein this longitudinal distance is identical for all positioning recesses adjacent in the longitudinal direction. This longitudinal distance is preferably smaller than the defined longitudinal extension length, so that even the shortest functional module can be fixed relative to the base module by means of two actuating units. Furthermore, all functional modules that are longer can be fixed to the base module by means of two actuating units, the fixing elements of which are arranged with their positioning projections in each of the positioning recesses.The fixing elements are preferably designed asymmetrically with respect to their extension along the longitudinal direction and have a first longitudinal end and a second longitudinal end, wherein in the operating state two adjacent fixing elements point in different directions along the longitudinal direction, so that they point towards one another with their first longitudinal ends and away from one another with their second longitudinal ends. This can particularly simplify actuation of the actuating elements, which are fastened or guided by means of the fixing elements, since the actuating elements can then be actuated towards one another or away from one another along the longitudinal direction. Generally speaking, exactly two actuating elements are preferred in the operating state, and in particular when fixing and / or guide elements are provided, these too, within the.

[0036] The functional module is arranged in a longitudinal extension region over which the functional module extends, wherein each of the actuating elements, in particular also fixing and / or guiding elements, is arranged within a longitudinal end region of the functional module. The functional module naturally has two longitudinal ends between which it extends along its longitudinal extension length. The longitudinal end region at the respective longitudinal end refers to the region over which the functional module extends, starting from the longitudinal end, over less than 30%, in particular less than 20%, in particular less than 15% of its longitudinal extension length.

[0037] In one embodiment, the system has a mounting clamp corresponding to the mounting connection, which is fixed to the mounting connection in the operating state and projects beyond the top side of the base module over a vertical region in which the actuating element is arranged and is accessible from a transverse side. Generally preferably, the actuating element is arranged on the top side of the base module, in particular the actuating section of the actuating element, by means of which the actuating element can be actuated, is arranged on the top side of the base module. Generally preferably, the actuating element projects vertically beyond the top side of the base module so that it is as easily accessible and actuable as possible for a user. Preferably, the actuating element projects vertically by less than 10 mm, in particular by less than 5 mm, beyond the top side of the base module.By the mounting clamp extending within the vertical range within which the actuating element is arranged on the upper side of the base module and protrudes beyond it and is thus accessible from a transverse side of the base module, it can be particularly reliably ensured that the actuating element always remains accessible even when the mounting clamp is mounted on a planar ceiling. Preferably, the mounting clamp protrudes vertically beyond the upper side of the base module by less than 10 mm, in particular less than 5 mm. In one embodiment, the system has a mounting clamp corresponding to the mounting connection, which is fixed to the mounting connection in the operating state, wherein the mounting clamp is arranged in a fixed position between the base module in the operating state and can only be detached from the base module after the functional module has been detached from the base module.In the advantageous embodiment, it is thus provided that the mounting clamp extends at least partially between the base module and the functional module in the operating state, wherein the mounting clamp is absolutely fixed in its position relative to the base module by this extension running between the base module and the functional module, so that it can only be released from the base module after the functional module has been released from the base module.

[0038] In one embodiment, an electrical plug-in device is arranged on the base module and a corresponding electrical plug-in device is arranged on the functional module. The electrical plug-in device can in particular be connected to the supply lines explained, which are arranged on the base module and run along the longitudinal direction. The plug-in device is fixed in a fixed position on the base module relative to the first part of the fastening device fixed to the base module. The corresponding electrical plug-in device is fixed in a fixed position on the functional module relative to the second part of the fastening device fixed to the functional module. By fixing the first and second parts of the fastening devices to the plug-in device orThe corresponding plug-in device can thus be particularly advantageously used to ensure that, with such a relative arrangement of the functional module and the base module to one another, in which the plug-in device and the corresponding plug-in device interlock, the first and second parts of the fastening device also interlock and cooperate to realize the fastening device. In one embodiment, a plug-in device and the corresponding

[0039] Plug-in device a conical, vertically tapered

[0040] Plug guide unit and the other of plug device and corresponding plug device a corresponding

[0041] Plug-in guide unit, so that when the base module and functional module are brought together vertically, the play existing perpendicular to the longitudinal direction between the plug-in guide unit and the corresponding plug-in guide unit is reduced, thereby aligning the first and second parts of the fastening device. The base module and functional module can therefore be moved towards one another vertically, i.e. along the vertical direction, the operating state being achieved at the end of the movement towards one another, wherein during this vertical movement towards one another, there is initially a first play between the plug-in guide unit and the conical plug-in guide unit in a first engagement, and this play increasingly decreases, so that in the operating state there is no play or a second play between the plug-in guide unit and the corresponding plug-in guide unit which is less than the first play.

[0042] In one embodiment, the system comprises a concealing element which has a U-shaped cross-section with a U-shaped base and U-shaped legs and which, in the operating state of the system, is arranged with a first longitudinal section between the base module and the functional module and projects longitudinally beyond the functional module with a second longitudinal section. In the operating state, the concealing element preferably encompasses the base module from the outside with both the first longitudinal section and the second longitudinal section. The first and second longitudinal sections of the base module preferably merge continuously into one another or directly border one another, such that the concealing element continuously encompasses the base module on its transverse outer sides over the first and second longitudinal sections. The U-shape formed by the concealing element is preferably open at the top, with the base module being arranged within the U-shape.

[0043] The U-shaped legs of the concealing element preferably extend over at least the majority, in particular at least 90%, in particular at least 100%, of the vertical extension length of the base module. The functional module preferably has a receptacle on its upper side which is delimited by two transverse side regions of the functional module, wherein the base module is arranged in the receptacle in the operating state and is arranged transversely between the two side regions. The concealing element preferably extends over the first and second longitudinal sections along at least the vertical section along the outside of the base module, over which section the base module is arranged in the receptacle formed by the functional module.The provision of the concealing element is particularly advantageous for an embodiment of the system in which a plurality of functional modules are provided, wherein in an operating state of this embodiment both functional modules are fixed to a same base module of the system and are arranged one behind the other along the longitudinal direction, wherein the concealing element is arranged with its first longitudinal section between the base module and a first of the functional modules and with its second longitudinal section between the base module and a second of the functional modules. By means of the concealing element, the base module can be effectively concealed even across such a gap, which can possibly form along the longitudinal direction between the two functional modules arranged one behind the other along the longitudinal direction.The inventors have recognized that it is particularly advantageous to design such a concealing element with a U-shaped cross-section and to arrange such a concealing element between the base module and the functional module. This allows, on the one hand, the concealing element to particularly advantageously conceal the base module and, on the other hand, in advantageous embodiments, the concealing element can first be specifically fastened to the base module and then the functional module can be arranged on the base module and concealing element in such a way that the concealing element only overlaps the functional module with one of its longitudinal sections in the longitudinal direction. Thus, in an operating state of an embodiment of a system according to the invention, the base module is preferably arranged both within the U-shape formed by the cross-section of the concealing element and within the receptacle formed by the functional module.

[0044] In one embodiment, the concealing element has leg sections with holding regions by means of which the concealing element is fixed to the base module. The concealing element is particularly preferably fixed to the base module by means of the leg sections within the base module, and when a base module with a U-shaped cross-section is provided, thus within the U-shaped cross-section of the base module. The holding regions are particularly preferably fixed to the holding projection which, in embodiments, is included in the base module and on which the holding spring, which is fixed to the functional module, also engages in the operating state, as is provided in advantageous embodiments. In the operating state, the holding spring preferably rests against the holding projection within a vertical extension region of the receptacle.

[0045] The invention further proposes, as an independent solution which, in advantageous embodiments, may have features that are described herein in connection with advantageous embodiments of other solutions, a system for implementing a luminaire, which system has a fastening device comprising a spring unit and an actuating unit, and at least one base module and one functional module as modules. At least one of the modules is elongated in a longitudinal direction. In an operating state of the system in which the luminaire is implemented, the modules are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction. In this operating state, the base module is arranged at least in sections vertically above the functional module, and the luminaire can be mounted on a ceiling via a mounting connection formed by the base module.The spring unit has a retaining spring, and the actuating unit has an actuating element. In the operating state, the retaining spring is fixed to one of the modules and rests vertically against a retaining projection provided on the other module, fixing the modules to one another. In the operating state, the actuating element is fixed to one of the modules. In one embodiment, the retaining spring and actuating element are fixed to the same one of the modules. In another embodiment, the retaining spring is fixed to one of the modules and the actuating element is fixed to the other of the modules. Starting from the operating state, the functional module can be detached from the base module by actuating the actuating element, deflecting the retaining spring and creating a release state.The present solution proposes as generally advantageous, which can also be advantageously provided in embodiments of other solutions described here, that the actuating unit, in particular the fixing element of the actuating unit, has at least one holding space, wherein the system comprises a plurality of electrical conductors which are arranged in the holding space and are held therein. Held means at least a determination of the position of the electrical conductors with regard to a specific direction, in particular at least in the transverse direction, in particular at least in the transverse and vertical directions. Preferably, the system further comprises a holding element, wherein the holding space is formed between the fixing element and the holding element. Preferably, the actuating unit has the holding element.The actuating unit preferably has a first holding space formed between the fixing element and the holding element, as well as a second holding space which is formed at least in section by the holding element and which is separated from the first holding space by the holding element. In one embodiment, the system has a positioning element which is fixed to the base module in the operating state of the system. The base module preferably has the holding projection against which the holding spring rests in the operating state, and the positioning element is fixed to the holding projection in the operating state. In the operating state, the positioning element bridges a section of the base module. In the operating state, at least some of the electrical conductors of the system are preferably guided between the positioning element and the aforementioned section of the base module which the positioning element bridges.As explained in advantageous embodiments of other solutions according to the invention, the system can comprise a plurality of actuating units and / or a plurality of positioning elements and electrical conductors can be arranged both in a holding space of at least one of the actuating units and also between the base module and the positioning element.

[0046] The invention further proposes, as an independent solution which, in advantageous embodiments, may have features that are described herein in connection with advantageous embodiments of other solutions, a system for implementing a luminaire, which system has a fastening device comprising a spring unit and an actuating unit, and at least one base module and one functional module as modules. At least one of the modules is elongated in a longitudinal direction. In an operating state of the system in which the luminaire is implemented, the modules are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction. In this operating state, the base module is arranged at least in sections vertically above the functional module, and the luminaire can be mounted on a ceiling via a mounting connection formed by the base module.The spring unit has a retaining spring, and the actuating unit has an actuating element. In the operating state, the retaining spring is fixed to one of the modules and rests vertically against a retaining projection provided on the other module, fixing the modules to one another. In the operating state, the actuating element is fixed to one of the modules. In one embodiment, the retaining spring and actuating element are fixed to the same one of the modules. In another embodiment, the retaining spring is fixed to one of the modules and the actuating element is fixed to the other of the modules. Starting from the operating state, the functional module can be detached from the base module by actuating the actuating element, deflecting the retaining spring and creating a release state.It is particularly advantageous in the sense of the solution described, and also advantageously provided in embodiments of other solutions described here, for the actuating element to be designed as a component separate from the retaining spring, wherein the actuating unit comprises a return spring which is connected to the actuating element and which opposes the movement of the actuating element between the operating state and the release state with a return force, wherein in particular the return force is provided in such a way that the actuating element, due to the return force, automatically returns from its position in the release state relative to the module to which it is fixed, to its position in the operating state relative to this module.Thus, it is generally advantageously provided, and thus regardless of whether the retaining spring and actuating element are fixed to the same module or to different modules, that the actuating unit comprises a return spring which is not identical to the retaining spring and is thus provided in addition to the retaining spring. As a result, the actuating element can be assigned its own return spring, by means of which the movement of the actuating element, for example between the operating state and the release state, can be determined particularly advantageously. Generally preferably, the actuating element is fixed to the said module by a guide device which defines the mobility of the actuating element relative to this module to a predefined movement path, in particular a linear movement path, in particular a linear movement path running along the longitudinal direction.The predefined movement path also determines the direction of movement that the actuating element performs between the operating state and the release state, or between the release state and the operating state. The actuating unit preferably has a guide element that is enclosed by the guide device and is movably guided relative to the modules in the operating state, wherein in the operating state, which is generally advantageous for embodiments according to the invention, the guide element only moves in sections relative to the modules. Preferably, the guide element has a recess into which the actuating element engages with a guide projection, and / or the actuating element has a recess into which the guide element engages with a guide projection. The return spring can preferably be made in one piece with the.

[0047] Actuating element or formed integrally with the guide element. Further advantageous refinements of the described solution will be apparent to those skilled in the art from the present explanations of advantageous embodiments of other solutions according to the invention.

[0048] The invention further relates to a luminaire which is implemented by means of an embodiment of a system according to the invention. The system is in the operating state, such that the components of the system are arranged relative to one another as explained for the operating state. At this point, it should be pointed out again that the explanation with reference to the operating state can of course also always apply to the explanation for any other operating state explained here, in particular for the first alternative and the second alternative operating state. Thus, various luminaires can be implemented by means of the system according to the invention, wherein when a first luminaire is implemented, the system is in the operating state, when a second luminaire is implemented, the system is in the first alternative operating state, and when a third luminaire is implemented, the system is in the second alternative operating state.

[0049] The invention accordingly further relates to a lighting set comprising a first light and a second light, each of which is formed by means of an embodiment of the system according to the invention, wherein the system has several of all the components included in the various embodiments of the system, so that a first group of components can be arranged in a position relative to one another which they occupy in the operating state of the system, and a second group of components can be arranged simultaneously in a position relative to one another which they occupy in the first or second alternative operating state.The lighting set according to the invention thus comprises a light formed by a first group of components of the system, which are located in a position relative to one another that they occupy in the operating state, and a second light formed by a second group of components of the system, which are located in a position relative to one another that they occupy in the first or second alternative operating state. Accordingly, the lighting set can further comprise a third light formed by a third group of components of the system, wherein the components of the second group, for realizing the second light, are located in a position relative to one another that they occupy in the first alternative operating state, and the components of the third group are arranged in a position relative to one another that they occupy in the second alternative operating state.

[0050] The invention further relates to a method for disassembling a functional module of a luminaire from a base module of the luminaire. The luminaire is designed according to the invention. Thus, the luminaire is realized using an embodiment of a system according to the invention. In the method according to the invention, the actuating element is moved from the operating state until the release state is reached, after which the functional module is pulled vertically away from the base module or removed from it or moved away from it by a relative movement to the base module along the vertical direction.

[0051] The various solutions according to the invention and their embodiments can be combined with one another particularly advantageously. In particular, the various solutions according to the invention can have features in embodiments that are described here in connection with other solutions and their embodiments and / or in connection with generic systems, luminaires, and methods.

[0052] The invention is explained in more detail below with reference to ten figures based on exemplary embodiments. They show:

[0053] Figure 1: in various schematic principle representations, a simplified representation of possible implementations of a luminaire according to the invention;

[0054] Figure 2: in various schematic diagrams

[0055] Components of an embodiment of a system according to the invention;

[0056] Figure 3: in various schematic diagrams

[0057] Components of an embodiment of a system according to the invention;

[0058] Figure 4: in various schematic diagrams

[0059] Components of an embodiment of a system according to the invention;

[0060] Figure 5: in various schematic diagrams

[0061] Components of an embodiment of a system according to the invention;

[0062] Figure 6: in various schematic diagrams

[0063] Components of an embodiment of a system according to the invention;

[0064] Figure 7 : in various schematic representations

[0065] Components of an embodiment of a system according to the invention;

[0066] Figure 8: in various schematic diagrams

[0067] Components of an embodiment of a system according to the invention;

[0068] Figure 9: in various schematic diagrams

[0069] Components of an embodiment of a system according to the invention;

[0070] Figure 10: in various schematic diagrams

[0071] Components of an embodiment of a system according to the invention; Figure 11: various schematic representations of components of an embodiment of a system according to the invention;

[0072] Figure 12: in various schematic principle representations, components of an embodiment of a system according to the invention;

[0073] Figure 13: in various schematic principle representations, components of an embodiment of a system according to the invention.

[0074] Figure 1 shows a schematic overview drawing showing a luminaire comprising a base module 1 of an embodiment of a system according to the invention and various functional modules 2, 20, 200. The various functional modules 2, 20, 200 are arranged one behind the other along the longitudinal direction on the one base module 1. All functional modules 2, 20, 200 each have an identically designed, U-shaped receptacle on their upper side, which is delimited by two transverse side regions of the respective functional module 2, 20, 200, wherein the base module 1 is arranged in the receptacle of each of the functional modules 2, 20, 200 and thus the functional modules 2, 20, 200 each enclose the base module 1 transversely on both sides. For explanatory purposes, the various functional modules 2, 20, 200 are each shown in a sectional view perpendicular to the longitudinal direction in Figure 1.An identically designed retaining spring 4 is arranged in each of their receptacles, forming part of the system's fastening device. The various functional modules 2, 20, 200 are referred to herein as functional module 2, first additional functional module 20, and second additional functional module 200. The various functional modules 2, 20, 200 differ in the receiving space they form for a direct lighting module.While the functional module 20 is designed as a pure dummy module that does not have such a receiving space, the first further functional module 2 has a receiving space that extends exclusively vertically below the base module 1 in the operating state, which in the present case and according to the invention is generally advantageously formed by a U-shaped section of the first further functional module 2 that is arranged below the base module 1 in the operating state, the second further functional module 200 has a receiving space that extends transversely on both sides next to the base module 1 in the operating state. For illustrative purposes, Figure 1 shows, on the one hand, a fixing element 5, on the other hand, an actuating element 8 and, in addition, electrical components 100 that are arranged within the interior space enclosed by the second further functional module 200 and the base module 1, with reference to the second further functional module 200 andthe relative arrangement thereof. Function module 20 and the first additional functional module 2 are shown without such system components for explanatory purposes only. In the following exemplary illustration, the functional module shown in Figure 1 as the first additional functional module 2 is referred to as functional module 2 by way of example.

[0075] Figure 2, comprising Figures 2a, 2b and 2c, shows the base module 1 as well as a fixing element 5 and a guide element 6 of an embodiment of a system according to the invention in various schematic principle representations. Figure 2a shows a view of the base module 1 diagonally from below, wherein Figure 2a also shows, for explanatory purposes, a fixing element 5 and a guide element 6 arranged thereon, which are fixed to the underside of the base module 1 in order to implement the operating state or any possible operating state, i.e. also one of the alternative operating states. Figure 2b shows the base module 1, fixing element 5 and guide element 6 in their relative position to one another, which they occupy in the operating state or any operating state.A corresponding arrangement is also shown in Figure 2c, wherein Figure 2b shows a section perpendicular to the longitudinal direction, and Figure 2c shows a view obliquely vertically from below. Figure 2, comprising Figures 2a, 2b, and 2c, shows that the base module 1 has a U-shaped section with a U-shaped base and U-shaped legs, with the fixing element 5 and the guide element 6 being attached to an underside of the U-shaped base of the base module.

[0076] I are arranged. As explained in more detail below in connection with Figure 4, the fixing element 5 has a guide on which the guide element 6 is held in a guided manner, in particular linearly guided, in particular linearly guided along the longitudinal direction, which is generally advantageous according to the invention. Thus, the fixing element 5 and guide element 6 can be assembled even before the operating state is realized, as shown in simplified form in Figure 2a for the sake of explanation, in such a way that they can be treated as a coherent component which can be fixed to the base module 1. For example, this component consisting of the fixing element 5 and guide element 6 can be moved to the base module 1 and fastened to it, as indicated in Figure 2a with a dashed arrow.To ensure that the fixing element 5 and guide element 6, and through this also, as explained later, the actuating element 7, 8, are always fixed in a longitudinal position intended for this purpose relative to the base module 1, the fixing element has a positioning projection 55, and the base module 1 has a plurality of positioning recesses 15 arranged one behind the other along the longitudinal direction and spaced apart from one another by a certain distance. The fixing element 5 can be inserted vertically with its positioning projection 55 into each of the positioning recesses 15, wherein holding arms 52 of the fixing element 5 are deflected transversely while being moved past holding lugs 121 provided on the U-legs of the base module 1 until they engage behind them.The fixing element 5 has a retaining lug on each of its retaining arms 52, by means of which it presses vertically against the corresponding retaining lug 121 of the respective U-leg 12 of the base module 1 in the operating state.

[0077] In the operating state, the fixing element 5 is thus pressed vertically between two spaced-apart holding sections of the base module 1, the upper of these holding sections being supported by the U-bottom

[0078] II of the base module 1 and the lower of the two holding sections is formed by the holding lugs 121 of the U-legs 12 of the base module 1. In the operating state, the guide element 6 is arranged, on the one hand, between the U-bottom 11 of the base module 1 and the fixing element 5 and is thus guided between them, and, on the other hand, is held on the guide of the fixing element 5, which is explained in more detail below with reference to Figure 4, engaging behind it. In the operating state, the guide element 6 rests on each transverse side with an oblique section 62 on a corresponding oblique section 122 of each U-leg 12 of the base module 1, which is generally advantageous according to the invention. As a result, the guide element 6 is guided particularly advantageously relative to the base module 1. From Figure 2 it can also be seen that the fixing element 5 has several transversely, iealong a transverse direction, next to each other arranged channels 50, wherein in the operating state in Figure 2 electrical conductors not shown are arranged in the channels 50, i.e. one electrical conductor in each channel 50, and are held in place by being pressed into each of them. Furthermore, it can be seen from Figure 2 that the base module 1 has holes 14, wherein a pair of holes 14 is provided in a fixed arrangement relative to a positioning recess 15 on the base module 1, which is generally advantageous according to the invention. In the operating state, the actuating element 7, 8 extends through the holes 14 from the top side of the base module 1, as explained in more detail below with reference to Figure 4, so that it is arranged with a section on the underside of the base module 1 and extends into the guide element 6, as explained in more detail below with reference to Figure 4.From a view of Figures 2a and 2c together, it is further apparent that the fixing element 6 is designed asymmetrically with respect to its extension along the longitudinal direction and that two fixing elements 5 adjacent in the longitudinal direction are arranged in a different direction along the longitudinal direction, so that they each face one another with the same longitudinal end. This can particularly advantageously ensure that two actuating elements fixed to the two fixing elements 5 arranged adjacent to one another must be moved in opposite directions, i.e. towards or away from one another, so that the release state can be reached starting from the operating state. Furthermore, it is clear from Figure 2c that the base module 1 has a cable feedthrough 18 in its U-shaped base 11 and also has a centering recess 13.An external supply cable can be guided through the cable feedthrough 18 into the interior space between the functional module 2, 20, 200 and the base module 1, where it can be connected to supply lines arranged on the base module 1 and running in the longitudinal direction. The supply lines are preferably formed by electrical conductors that are arranged in the channels 50 of the fixing elements 5 and are fixed thereto. Figure 2b further shows that the base module 1 has a mounting connection formed by two channels 16 and mounting projections 17 on its upper side. The mounting projections 17 allow an indirect lighting module 9, as shown, for example, in Figure 7, to be held in a simple manner on the upper side of the base module 1.Furthermore, it can be seen from Figure 2b that the base module 1, generally advantageous according to the invention, has mounting lugs 171 below the mounting projections 17, each of which transversely delimits a cable duct which is provided between a respective transverse side wall section of the base module 1 and a mounting projection 17 extending from this side wall section towards the transverse center.

[0079] Figure 3, comprising Figures 3a, 3b, and 3c, schematically shows a functional module 2 and a retaining spring 4 in various basic representations. While Figures 3a and 3b show the arrangement of the retaining spring 4 and the functional module 2 in relation to one another, as the two are in operation, Figure 3b shows the retaining spring 4 individually. Figure 3a shows a cross-sectional view perpendicular to the longitudinal direction, and Figure 3c shows a perspective oblique view. Figure 3 shows that the retaining spring 4 has a base section 41 and two spring legs 42. The retaining spring 4 is U-shaped, with the base section 41 forming the U-shaped base 11 and the spring legs 42 forming the U-shaped legs 12 of the retaining spring 4, which is generally advantageous according to the invention. Each of the spring legs 42 has a projection, which in this case is designed as a sharp-edged retaining shoulder 421.In addition, each of the spring legs 42 has a guide section 422. This guide section 422 is generally advantageously located in the operating state within a guide receptacle which is comprised by the actuating unit, wherein generally preferably this guide receptacle has an inclined surface along which the guide section 422 slides during a movement of the actuating element 7, 8, which the actuating element 7, 8 performs starting from the operating state to reach the release state, wherein due to the sliding occurring during this movement the retaining spring 4 is deflected by the guide section 422 being moved by the sliding. In this case, the inclined surface preferably runs obliquely to the direction of movement along which the actuating element 7, 8 is moved, i.e.obliquely to its path of movement, so that a reversal of movement is achieved by the inclined surface, so that the movement of the actuating element 7, 8 occurs in a different direction than the movement of the guide section 422, which it performs due to sliding on the inclined surface. The functional module 2, which is shown in Figure 3, has, generally advantageously according to the invention, an upper U-shaped section and a lower U-shaped section, wherein the upper and lower U-shaped sections are formed by two transverse side regions 24 which are connected to one another by a crosspiece 21. The crosspiece 21 thus forms the U-bottom 11 of both the upper U-shaped section and the lower U-shaped section.The two side regions 24 of the functional module 2, together with the crosspiece 21, form the receptacle 23 of the functional module 2, in which the base module 1 is arranged in the operating state, and the receptacle space 22, in which a direct operating module (not shown here) is arranged in the operating state. The side regions 24 further form, on their mutually facing inner sides, a corresponding fixing projection 25 of the functional module 2, against which, in the operating state, the first fixing projections 43 of the retaining spring 4 bear with a first vertical pressing force. When a vertical relative force acts between the retaining spring 4 and the functional module 2, the second fixing projections 44 of the retaining spring 4 also bear with a second vertical pressing force, the amount of the second vertical pressing force depending on the amount of the acting vertical relative force.From Figure 3b it can be seen that the retaining spring 4 has two pairs of fixing projections 43, 44 on each of its transverse sides, one of which is designed as a first fixing projection 43 and another as a second fixing projection 44.

[0080] Figure 4, comprising Figures 4a, 4b, 4c, and 4d, shows the guide element 6 and the fixing element 5, as well as the actuating element 7, and an alternatively usable additional actuating element 8 of the actuating unit of the fastening device of the system described here, together with the retaining spring 4 of the spring unit of the system, in various schematic principle representations. Figure 4 shows that the fixing element 5 forms a guide 56 which, in the operating state, engages vertically behind the guide element 6 with a guide region 66. Furthermore, the guide of the fixing element 5 is formed by a flat upper side section 51, along which the guide element 6 can slide while resting, while its guide region 66 engages behind the guide 56, as well as by centering lugs 57 which engage in centering recesses 67 of the guide element 6.The guide element 6 further comprises an integrated return spring 61, which in the present embodiment is supported on the fixing element 5. According to the invention, the return spring 61 is generally advantageously integrated into the guide element 6, in particular integrated as a single piece. Generally advantageously, the guide element 6 is manufactured as a single-piece injection-molded component, in which the return spring 61 is integrated. In the operating state, the return spring 61 is connected to the respective actuating element 7, 8 by the actuating element 7, 8 having guide projections 73, 83, each of which engages a recess 63 in the guide element 6.The connection is such that in the operating state there is a play between the guide projection 73, 83 and the recess 63, but that when the actuating element 7, 8 is moved from the operating state to realize the release state, the actuating element 7, 8 necessarily comes into contact with the guide element 6 in such a way that it causes a deflection of the return spring 61.In general, the property that the actuating element 7 is connected to, for example, the guide section of the retaining spring 4 or the guide element 6 or the fixing element 5 is understood to mean such a connection that is not necessarily present in every possible position of the actuating element 7, 8, but at least during the movement of the actuating element 7, 8 during the movement path that it performs between the operating state and the release state, so that the connection fulfills its corresponding function during the execution of the movement of the actuating element 7, 8.For example, the guide projection 73, 83 of the actuating element 7, 8 can be arranged with a certain amount of play within the recess 63 of the guide element 6 in the operating state, but during the aforementioned movement of the actuating element 7, 8, the guide projection 73, 83 inevitably comes into contact with an edge limiting the extension 63 and only due to this contact leads to a deflection of the guide section 422 of the retaining spring 4. From a view of Figures 3, 4 and 5 together, it is also clear how a linear movement of the actuating element 7, 8 along the longitudinal direction leads to a deflection of the guide sections 422 of the retaining spring 4. The guide sections 422 are each arranged in a guide receptacle 64 of the guide element 6 in the operating state and in the released state.The guide receptacle 64, generally advantageous according to the invention, forms an inclined surface section that runs obliquely to the movement path, in this case obliquely to the longitudinal direction. Thus, due to the reversal of movement caused by the inclined surface section, the guide section 422 of the retaining spring 4 arranged in the respective guide receptacle 64 is deflected transversely starting from the operating state when, starting from the operating state, the actuating element 7, 8 is moved along the longitudinal direction relative to the modules 1, 2. The actuating element 7 and the additional actuating element 8 are guided in the operating state and during their movement between the operating state and the release state by a guide device relative to the base module 1 and also relative to the functional module 2 and are thereby fixed to a linear movement path running along the longitudinal direction.This guide device comprises the guide element 6 and the fixing element 5, since, as explained, the actuating element 7, 8 is guided relative to the guide element 6 and this is guided relative to the fixing element 5. In addition, the actuating elements 7, 8 each have a guide contour 77, 87. The guide contour 77 of the actuating element 7 is designed to correspond to a guide contour formed by the indirect lighting module 9, as can be seen in particular from Figure 7. The guide contour 87 of the additional actuating element 8 is designed to correspond to a guide contour formed by the base module 1 itself, which in this case is formed by the mounting projections 17, as can be seen from Figure 2b.

[0081] Figure 6, comprising Figures 6a and 6b, illustrates various mounting options for the base module 1 on a ceiling and the arrangement of various actuating elements 7, 8. Figures 6a and 6b each show a sectional view perpendicular to the longitudinal direction. In the exemplary embodiment according to Figure 6a, the base module 1 is mounted to a ceiling by means of cables 91, wherein the cables 91 each have a thickened end that is arranged in a respective part of the mounting connection of the base module 1, designed as a channel. In the exemplary embodiment according to Figure 6b, the base module 1 is mounted to a ceiling by means of a mounting clamp 92. The mounting clamp 92 engages behind vertical projections of the mounting connection of the base module 1.From Figures 6a and 6b it can be seen that the actuating elements 7, 8 each extend vertically beyond the top side of the base module 1 in the operating state and thus protrude vertically thereabove. The mounting bracket 92, however, protrudes beyond the top side of the base module 1 at least over the same vertical extent as the actuating elements 7, 8, in particular, as can be seen in Figure 6b, beyond that. As a result, the respective actuating element 7, 8 can always be accessible from every transverse side of the base module 1, even when a mounting bracket 92 is used, even if the top side of the mounting bracket 92 is mounted directly to a ceiling. Such a mounting is shown by way of example in Figure 8c. The base module 1 is fastened to the ceiling 900 by means of the mounting bracket 92, wherein the additional actuating element 8 used in this exemplary embodiment is accessible from the transverse side of the base module 1.In Figure 8c, the base module 1, which is generally advantageous according to the invention, cannot be seen from the side in the operating state because it is encompassed on both sides by the functional module 2. The functioning of the actuating element 7 and the additional actuating element 8 as well as the interaction of the actuating element 7 with an indirect lighting module 9 can be seen in more detail in Figures 7 and 8. Figure 7 includes Figures 7a, 7b, 7c, 7d and 7e. Figure 8 includes Figures 8a, 8b and 8c. In the embodiment according to Figure 7, one actuating element 7 is used, while in the embodiment according to Figure 8, an additional actuating element 8 is used.From Figure 7 it can be seen that an indirect lighting module 9 is arranged on the top side of the base module 1 in the operating state and engages behind the mounting projections 17 of the base module 1 with corresponding mounting projections 71, so that it is held pressed against the U-shaped base 11 of the base module 1 from above. The actuating element 7 has an actuating section with which it is arranged vertically above the indirect lighting module 9 in the operating state. The indirect lighting module 9 has a cover with a lens section 90. The cover forms a top side section of the indirect lighting module 9, wherein the actuating section of the actuating element 7 runs above the top side section and is designed to correspond thereto, so that the actuating element 7 can be moved along the top side section during actuation to reach the release state, starting from the operating state.The actuating section of the actuating element 7, in this case the entire actuating element 7, is designed to be translucent. The actuating element 8, which is used in the exemplary embodiment shown in Figure 8, has a guide contour 87, which is designed to correspond to the mounting projections 17 as a corresponding guide contour of the base module 1. The additional actuating element 8 has an actuating section comprising transverse ribs 85, which make it particularly easy for a user to grasp and displace along the longitudinal direction between its positions in the operating state and the released state.While the additional actuating element 8 is arranged offset from the cable feedthrough 18 of the base module 1 both in the operating state and in the released state, so that the latter is permanently accessible, the actuating element 7 is also spaced from this cable feedthrough 18 in the operating state and the released state, but the indirect lighting module 9 basically also extends over the same longitudinal section in which the cable feedthrough 18 is provided in the base module 1. The indirect lighting module 9 has a pre-punched breakout point 98 which can be broken out of the indirect lighting module 9, whereby a hole can be created in the indirect lighting module 9 which, in the operating state, is arranged in alignment with the cable feedthrough 18 of the base module 1.

[0082] Figure 9, comprising Figures 9a, 9b, and 9c, shows an embodiment of a system according to the invention that includes a coupling 10. The coupling 10 has a U-shaped cross-section with a U-base 101 and two U-legs 102 extending vertically from the U-base 101. On each of the U-legs 102, a group of first projections 104 and a group of second projections 103 are provided. In the operating state, these lateral projections 103, 104 each press transversely laterally against a counter-section of the base module 1, wherein this counter-section is formed in the present case by the U-legs 12 of the base module 1. The group of second lateral projections 103 presses vertically against the same counter-section against which the fixing elements 5 also press in the operating state.This counter-section is formed by a respective retaining lug 121 of the respective U-leg 12, wherein this retaining lug 121 also forms the retaining projection on which the retaining spring 4 is supported in the operating state or presses vertically against it. Thus, the base module 1 has a cross-section that forms a retaining projection that extends identically over at least a predominant part of the longitudinal extent of the base module 1, wherein this retaining projection presses vertically against the retaining legs of the fixing element 5 and vertically against lateral projections 103 of the coupling 10, as well as against the retaining spring 4, which is generally advantageous according to the invention.

[0083] According to the invention, the base module 1 is generally advantageously designed as an extruded profile with a cross-section that is constant along its longitudinal extent. According to the invention, the functional module 2 and also all further functional modules 20, 200 are generally advantageously designed as an extruded profile with a cross-section that is constant along their longitudinal extent. According to the invention, the coupling 10 is generally advantageously produced from sheet metal by forming, in particular also by stamping processes. Figure 9 further shows that the coupling 10 has a coupling cable feedthrough 118, which, in the operating state, is arranged flush with the cable feedthrough 18 of one of the two base modules 1 connected to one another by the coupling 10.Furthermore, it can be seen that the coupling 10 has a centering projection 113, which, in the operating state, is arranged in the centering recess 13 of each of the two base modules 1 connected to one another by the coupling 10. Figure 10, comprising Figures 10a and 10b, shows further components of an embodiment of a system according to the invention in their relative positions in the operating state. The system comprises supply lines 3, which are held by the fixing elements 5, which are fixed to the base module 1. The supply lines 3 are connected, on the one hand, to an electrical plug-in device 31, which is fixed to the base module 1, and, on the other hand, to an operating device 32.An electrical supply line (not shown) is connected to the operating device 32, which supplies an indirect lighting module 9 (not shown in Figure 10) and for this purpose runs through a hole 14 provided in the base module 1, starting from the underside to the top to the indirect lighting module 9. The electrical plug-in device 31 is fixed in position on the base module 1. The electrical plug-in device 31 has a conical, vertically tapered plug-in guide unit 310 and electrical plug-in contacts 311. A corresponding electrical plug-in device (not shown here) arranged on a functional module has a pin-like plug-in guide unit which is captured and centered by the conical plug-in guide unit 310 when the functional module 2 and the base module 1 move vertically towards one another, whereby the plug-in device and the corresponding plug-in device are correctly aligned with one another.Since the plug-in device and the corresponding plug-in device are each fixed in a fixed position on the base module 1 or the functional module, this simultaneously ensures alignment of the retaining spring 4 and the actuating element 7, 8 or the spring unit and the actuating unit.

[0084] Figure 11, comprising Figures 11a, 11b, 11c, 11d and 11e, shows various components of an embodiment of a system according to the invention in simplified schematic diagrams. Figure 11b shows a holding element 500 of the embodiment in isolation, and Figure 11e shows a positioning element 700 of the embodiment in isolation. Figures 11a and 11b show the interaction of fixing element 5, guide element 6 and holding element 500 of the described embodiment. Figure 11d shows the interaction between positioning element 700 and base module 1 on the one hand and fixing element 5 and holding element 500 with base module 1 on the other hand, as well as the interaction of these components with electrical conductors 33. The described embodiment of the system according to the invention has a plurality of positioning elements 700, a plurality of holding elements 500 and a plurality of actuating units.A group of electrical conductors 33 is arranged in and guided within a first holding space, which is formed by the holding element 500 and the fixing element 5 of a respective actuating unit, and is also guided between a respective positioning element 700 and a section of the base module 1 assigned thereto. The first holding space is delimited at a first vertical end by a plurality of transversely juxtaposed channels 50 of the fixing element 5, and at a second vertical end by a transverse web 503 of the holding element 500 bridging all of the channels 50. Retaining webs 501 project vertically from the transverse web 503 of the holding element 500, on each of which a locking projection 511 is provided, wherein, as can be seen in the combination of Figures 11a, 11b and 11c, these locking projections 511 engage in corresponding locking recesses 551 of the fixing element 5 in the operating state.Thus, in the operating state, the fixing element 5 and the holding element 500 are releasably fixed to one another by locking corresponding locking devices. The holding element 500 further has clamping webs 502, on each of which a limiting projection 521 is formed. Between the transverse cross web 503 and the clamping webs 502, the holding element 500 forms a second holding space for a further group of electrical conductors, which are not shown here. These further electrical conductors can be clamped between the transverse cross web 503 and the clamping webs 502 and thereby fixed in their position with respect to the vertical direction Z, whereas their transverse position is fixed by the limiting projections 521 and the holding webs 501.The actuating unit of the embodiment described here can, for example, be constructed according to the functional principle explained in Figure 4 and accordingly, for example, comprise an actuating element 7, 8 as explained in relation to Figure 4. The fixing element 5 preferably has at least one positioning projection 55; in the exemplary embodiment described here, it has two such positioning projections 55, which, as explained here for advantageous embodiments, can interact with corresponding positioning recesses in the base module 1. The fixing element 5 can generally advantageously be fixed to the base module 1 by having a plurality of, preferably at least four, holding arms 52, on each of which a fastening projection 520 is provided, with which it engages behind or against a corresponding holding section of the base module 1.rests against it, wherein in the present case the holding section of the base module 1 is formed by its holding projection, on which the holding spring 5 engages in the operating state, offset in the longitudinal direction to the fixing element or to its holding arms 52.

[0085] The functioning of the positioning element 700 can be seen particularly advantageously from a view of Figures 11d and 11e. The positioning element 700 has a cross-section in the manner of an H-shape. In the operating state, the positioning element is held vertically clamped by fastening projections 720 on holding sections of the base module 1, generally advantageously according to the invention. In the present case and generally advantageously, the fastening projections 720 of the positioning element 700 bear against the holding projection of the base module 1 in the operating state, offset from the holding spring 5. In the operating state, the positioning element 700 is generally preferably supported on the one hand with its fastening projections 720 in the holding projection of the base module and on the other hand with vertical end sections 721 on the U-shaped base of the base module 1. The positioning element 700 has a positioning element section 701, which is formed by the transverse crossbar of the H-shape.The electrical conductors 33 are guided between the positioning element section 701 and a corresponding section of the base module 1 in the operating state. The guidance of the electrical conductors 33 provided by the base module 1 and the positioning element 700 determines their position both with respect to the transverse direction Y and with respect to the vertical direction Z. The H-shaped cross section of the positioning element 700 is advantageously formed, in the present case and according to the invention, by a positioning element section 701, which is designed as a transverse crosspiece, and vertical pieces 702 projecting vertically therefrom.

[0086] Figure 12, comprising Figures 12a, 12b, and 12c, shows a simplified schematic representation of the actuating unit, or rather components thereof, of an embodiment of the system according to the invention. The actuating unit has a return spring 61, which in this case is formed integrally with the guide element 6 of the actuating unit. The return spring 61 has two first spring sections 611, 612 and two second spring sections 613, 614. The guide element 6 has, as already explained herein for other embodiments, a guide receptacle 64 for receiving a guide section of a spring leg of the retaining spring. In addition, the guide element 6 has a recess 63 for receiving a guide projection of an actuating element 7, 8.The actuating unit, which is shown in Figure 12, further comprises a holding element 500, as explained with reference to the embodiment shown in Figure 11. From the combination of Figures 12a, 12b and 12c, it can be seen that in the operating state, the actuating element is fixed to a defined movement path by the design of the actuating unit, so that the actuating element performs a defined movement between the operating state and the release state, wherein the first spring sections 611, 612 are arranged on a first side of the actuating element 7, with respect to the direction of movement, and the second spring sections 613, 614 are arranged on a second side of the actuating element 7, opposite the first side, with respect to the direction of movement. Thus, the actuating element 7 is generally advantageous according to the invention, between the first.

[0087] Spring sections 611, 612 and the second spring section 613, 614 are arranged. In the operating state, each of the spring sections 611, 612, 613, 614 rests against a counterpart section assigned to it, which in this case is formed by the fixing element 5 of the actuating unit, so that the respective spring section 611, 612, 613, 614 is held resiliently compressed in the operating state with respect to the direction of movement between the actuating element 7 and the counterpart section assigned to it.The first spring sections 611, 612 exert a spring force in a first direction along the direction of movement, and the second spring sections 613, 614 exert a second spring force acting opposite to the first, so that the provision of first and second spring sections ensures both a pressed-together and thus reliable fixation of the actuating element 7 between the respective mating sections assigned to them and also ensures that a particularly well-determined restoring force acts on the actuating element 7 when it is deflected from the operating state to reach the release state. In the operating state, the spring sections 611, 612, 613, 614 do not act directly on the actuating element 7, but rather hold it in a defined position by acting on the section of the guide element 7 that forms the recess 63.

[0088] Figure 13, comprising Figures 13a, 13b, and 13c, shows components of a further embodiment of a system according to the invention in simplified form in various schematic principle representations. Figures 13a and 13b each show the base module 1 and a functional module 2, which are comprised in the illustrated embodiment. Figures 13a and 13b also show the laminating element 800, which is comprised in the present embodiment. The laminating element 800 has a cross-section in the manner of a U-shape with a U-base 801 and U-legs 803. With the U-base 801 and the U-legs 803, the laminating element 800, generally advantageously according to the invention, encompasses the base module 1 in the operating state, as shown in Figures 13a and 13b. The laminating element 800 is shown separately in Figure 13c.From the combination of Figures 13a, 13b and 13c it can be seen that in the operating state the laminating element 800 is arranged with a first longitudinal section between the base module 1 and the functional module 2, whereas with a second longitudinal section, which can be seen in Figure 13b, it projects beyond the functional module 2 in the longitudinal direction X. The first and second longitudinal sections are directly adjacent to one another and, as can be seen from Figure 13c in combination with Figures 13a and 13b, the laminating element encompasses the base element 1 with its U-legs 803 and its U-bottom 801 continuously over the first and second longitudinal sections.When arranging a further functional module 2 included in the described embodiment of the system according to the invention, not shown in Figure 13, as indicated, for example, in Figure 2b, in the longitudinal direction X directly adjacent to the functional module 2 shown in Figure 13b, the two functional modules 2 can thus be directly adjacent to one another along the longitudinal direction X, although a gap forming between them, which could allow a view of the base module 1, is prevented by the U-shaped legs 803 of the concealing element 800. The concealing element 800 is, generally advantageous according to the invention, fixed to the base module 1 by holding regions 802 formed by leg sections of the concealing element, wherein the holding regions 802 are fixed to the base module 1 within the base module 1, namely to the holding projection of the base module 1.From Figure 13b it can also be seen that in the functional module 2, instead of a cover 4, a panel 50 is provided, which delimits lenses 60 arranged above an LED illuminant arranged in the receiving space of the functional module 2. The further functional module 2 not shown in Figure 13b, however, is designed as shown in Figure 6. Thus, the concealing element 800 can conceal the transition between such a functional module 2 and the functional module 2 shown in Figure 13b, as explained. For example, several functional modules 2, 20, 200 can be arranged as in.

[0089] As shown in Figure 1, they can be arranged one behind the other along the longitudinal direction X, wherein a respective concealing element 800 is arranged, as explained, at the transition between two adjacent functional modules and thus extends with one of its longitudinal sections along one of the two adjacent functional modules.

[0090] K740760WQ

[0091] Ma / sk 5 November 2024

[0092] Applicant: TRILUX GmbH & Co. KG 59759 Arnsberg

[0093] Modular elongated luminaire

[0094] List of reference symbols

[0095] 1 basic module

[0096] 2 Function module

[0097] 3 supply line

[0098] 4 retaining springs

[0099] 5 Fixing element

[0100] 6 Guide element

[0101] 7 Actuating element

[0102] 8 (additional) actuating element

[0103] 9 Indirect lighting module

[0104] 10 Clutch

[0105] 11 U-floor

[0106] 12 U-legs

[0107] 13 Centering recess

[0108] 14 holes

[0109] 15 Positioning recess

[0110] 16 channel

[0111] 17 Mounting projection

[0112] 18 Cable entry

[0113] 20 Function module

[0114] 21 Crossbar

[0115] 22 Recording room

[0116] 23 Recording

[0117] 24 transverse side area

[0118] 25 corresponding fixing projection

[0119] 31 Plug-in device

[0120] 32 Operating device 33 Electrical conductor

[0121] 41 Basic section

[0122] 42 spring legs

[0123] 43 first fixing projection

[0124] 44 second fixing projection

[0125] 50 channels

[0126] 51 flat top section

[0127] 52 Holding arm

[0128] 55 Pos iti on iervor sprung

[0129] 56 Guide

[0130] 57 Centering nose

[0131] 61 Return spring

[0132] 62 Inclined section

[0133] 63 recess

[0134] 64 leadership recording

[0135] 66 Management area

[0136] 67 Centering recess

[0137] 71 Mounting projection

[0138] 73 lead before jump

[0139] 77 Guide contour

[0140] 83 Lead before jump

[0141] 85 transverse rib

[0142] 87 Guide contour

[0143] 90 lens section

[0144] 91 rope

[0145] 92 mounting bracket

[0146] 98 Breakout point

[0147] 100 electrical components

[0148] 101 U-floor

[0149] 102 U-legs

[0150] 103 second lateral projection

[0151] 104 first lateral projection

[0152] 113 Centering projection

[0153] 118 Coupling cable feedthrough

[0154] 121 retaining lug

[0155] 122 Inclined section

[0156] 171 Mounting lug 200 Function module

[0157] 310 Plug-in guide unit

[0158] 311 plug contact

[0159] 421 sharp-edged holding heel

[0160] 422 guide section

[0161] 500 mounting element

[0162] 501 Stop bridge

[0163] 502 clamping bar

[0164] 503 transverse crossbar

[0165] 511 locking projection

[0166] 520 mounting projection

[0167] 521 boundary projection

[0168] 551 locking recess

[0169] 611 spring section

[0170] 612 spring section

[0171] 613 spring section

[0172] 614 spring section

[0173] 700 positioning element

[0174] 701 Positioning element section

[0175] 720 mounting projection

[0176] 721 vertical end section

[0177] 800 Laminating element

[0178] 802 holding area

[0179] 900 ceiling

[0180] X Longitudinal direction

[0181] Y transverse direction

[0182] Z vertical direction

Claims

Modular elongated luminaire Patent claims 1. A system for implementing a luminaire, the system comprising a fastening device comprising a spring unit and an actuating unit, and at least one base module (1) and one functional module (2) as modules, wherein at least one of the modules (1, 2) is elongated in a longitudinal direction, wherein, in an operating state of the system in which the luminaire is implemented, the modules (1, 2) are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction, wherein, in the operating state, the base module (1) is arranged at least in sections vertically above the functional module (2), and the luminaire can be mounted on a ceiling (900) via a mounting connection formed by the base module (1), characterized in that a first part of the fastening device is fixed to the base module (1) and a second part of the fastening device is fixed to the functional module (2).wherein one of the first and second parts comprises a retaining spring (4) of the spring unit and the other of the first and second parts comprises an actuating element (7, 8) of the actuating unit, wherein in the operating state the retaining spring (4) is fixed to one of the modules (1, 2) and bears vertically against a retaining projection provided on the other module (1, 2) while fixing the modules (1, 2) to one another, wherein the, Actuating element (7, 8) is fixed to the other module (1, 2) and, starting from the operating state, the functional module (2) can be released from the base module (1) by actuating the actuating element (7, 8) while deflecting the retaining spring (4) to create a release state, wherein in particular the functional module (2) is designed as one module and the base module (1) as the other module.

2. System according to claim 1, characterized in that the actuating element (7, 8) is fixed to the other module (1, 2) by a guide device which defines a mobility of the actuating element (7, 8) relative to this module (1, 2) on a predefined movement path, in particular a linear movement path, in particular a linear movement path running along the longitudinal direction, wherein in particular the actuating unit has a guide element (6) which is enclosed by the guide device and is movably guided relative to the modules (1, 2) in the operating state, wherein the guide element (6) has a recess (63) into which the actuating element (7, 8) dips with a guide projection (83), and / or the actuating element (7, 8) has a recess into which the guide element (6) dips with a guide projection.

3. System according to one of the preceding claims, characterized in that the functional module (2) has on its upper side a receptacle (23) which is delimited by two transverse side regions (24) of the functional module (2), wherein the base module (1) is arranged in the receptacle (23) in the operating state and is arranged transversely between the two side regions (24), wherein in particular in the operating state the retaining spring (4) rests against the retaining projection within a vertical extension region of the receptacle (23).

4. System according to one of the preceding claims, characterized in that the system comprises a first further functional module (2, 20, 200) which has a greater transverse width and / or greater vertical height than the functional module (2, 20, 200), wherein in a first alternative operating state which can be implemented as an alternative to the operating state and in which a first alternative light is implemented, the first further functional module (2) is fixed to the base module (1) instead of the functional module (2, 20, 200), wherein a second part of a first alternative fastening device is fixed to the first further functional module (2, 20, 200), the first part of which is formed by the first part of the fastening device and by which the first further functional module (2, 20, 200) is held to the base module (1) in the alternative operating state, wherein in particular the system comprises a second further functional module (2, 20, 200),which has a greater transverse width and / or greater vertical height than the functional module (2, 20, 200) and than the first further functional module (2, 20, 200), wherein in a second alternative operating state, which can be implemented as an alternative to the operating state and in which a second alternative light is implemented, the second further functional module (200) is fixed to the base module (1) instead of the functional module (2, 20, 200), wherein a second part of a second alternative fastening device is fixed to the second further functional module (2, 20, 200), the first part of which is formed by the first part of the fastening device and by which the second further functional module (2, 20, 200) is held to the base module (1) in the second alternative operating state.

5. System according to claim 4, characterized in that the first further functional module (2, 20, 200) has on its upper side a receptacle (23) which is formed by two transverse Side regions (24) of the first further functional module (20), wherein the base module (1) is arranged in the receptacle (23) in the first alternative operating state and is arranged transversely between the two side regions (24), wherein in particular the system is designed according to claim 2 and a same section of the base module (1) is arranged in the receptacle (23) of the functional module (2, 20, 200) in the operating state and in the receptacle (23) of the first further functional module (2, 20, 200) in the first alternative operating state.

6. System according to one of the preceding claims, characterized in that the retaining spring (4) has a spring leg (42) on which a projection is provided, with which it rests vertically against the retaining projection in the operating state, wherein the spring leg (42) has a guide section (422) which, in the operating state, is guided in a guide receptacle (64) comprised by the actuating unit, wherein the actuating element (7, 8) is connected to the guide section in the operating state and in the released state and, starting from the operating state, the released state can be realized by a movement of the actuating element (7, 8) relative to the two modules (1, 2), wherein in particular the guide receptacle (64) is formed by the actuating element (7, 8) or the system is formed according to claim 2 and the guide receptacle (64) is formed by the guide element (6).

7. System according to claim 6, characterized in that the actuating unit has a fixing element (5) which is fixed in position to the modules (1, 2) in the operating state and in the release state and which forms a guide (56) by means of which the actuating element (7, 8) is guided during its movement between the operating state and the release state, wherein the guide is in particular a linear guide, in particular a linear guide running along the longitudinal direction.

8. System according to one of the preceding claims, characterized in that the actuating unit comprises a return spring (61) which is connected to the actuating element (7, 8) and which opposes a return force to the movement of the actuating element (7, 8) occurring between the operating state and the release state, wherein in particular the return force is provided such that the actuating element (7, 8) automatically returns, due to the return force, from its position in the release state relative to the other module (1, 2) to its position in the operating state relative to this module (1, 2), wherein in particular the return spring (61) has a plurality of spring sections (611, 612, 612, 614), which each bear against a counter-section of the actuating unit or one of the modules (1, 2) in the operating state, wherein at least two of the counter-sections, to which at least one of the spring sections (611, 612, 613, 614) is present,are spaced apart from each other along a direction of movement and point in opposite directions along the direction of movement.

9. System according to claim 8, characterized in that the return spring (61) is encompassed by the guide element (6), wherein in particular the guide element (6) is arranged between the fixing element (5) and the actuating element (7, 8), wherein in particular the guide element (6) is guided by the guide of the fixing element (5) and the actuating element (7, 8) is guided by means of the guide element (6) relative to the fixing element (5) and / or the guide element (6) is guided between the fixing element (5) and the other module (1, 2), wherein in particular the guide of the fixing element (5) and the guide element (6) are in the operating state and in the release state reach behind vertically.

10. System according to one of the preceding claims, characterized in that the actuating element (7, 8) and the other module (1, 2) and / or an intermediate element which is fixed in a fixed position to the other module (1, 2) and which is designed in particular as a lighting module, have mutually corresponding guide contours (77, 87), wherein the actuating element (7, 8) is guided relative to the module (1, 2) during the movement taking place between the operating state and the release state by an interaction of the guide contours (77, 87), in particular is guided linearly, in particular is guided linearly along the longitudinal direction, wherein in particular the actuating element (7, 8) is fixed to the module (1, 2) by the interaction of the guide contours (77, 87), wherein in particular the guide contours (77, 87) engage behind one another vertically in the operating state and in the release state.

11. System according to one of the preceding claims, characterized in that the spring unit is fixed to one module (1, 2) and the actuating unit is fixed to the other module (1, 2).

12. System according to one of the preceding claims, characterized in that a securing device, in particular an elastically deflectable securing device, is provided between the other module (1, 2) and the actuating element (7, 8), which securing device forms a stop for the actuating element (7, 8) to prevent movement of the actuating element (7, 8) relative to the other module (1, 2), wherein by deflecting the securing device the stop can be removed from the actuating element (7, 8) to release mobility of the actuating element (7, 8) relative to the other module (1, 2).

13. System according to one of the preceding claims, characterized in that the actuating unit, in particular the fixing element (5) of the actuating unit, has at least one holding space, in particular a plurality of transversely adjacently arranged channels (50) or a transversely continuous channel, wherein the system comprises a plurality of electrical conductors which are arranged and held in the holding space, in particular in one of the channels (50) each or jointly in the one transversely continuous channel, wherein in particular the holding space is formed between the fixing element (5) and a holding element (500).

14. System according to claim 13, characterized in that the actuating unit has a first holding space which is formed between the fixing element (5) and the holding element (500), and a second holding space which is formed at least in sections by the holding element (500) and which is separated from the first holding space by the holding element (500).

15. System according to one of the preceding claims, characterized in that the system has a positioning element (700) which is fixed to the base module (1), in particular to the holding projection, and bridges a section of the base module (1) and which in particular has a cross-section in the manner of an H-shape, wherein in particular the system is designed according to one of claims 13 or 14 and the electrical conductors are arranged both in the holding space and are guided between the positioning element (700) and the section of the base module (1).

16. System according to one of the preceding claims, characterized in that the actuating unit, in particular the fixing element (5) of the actuating unit, comprises a plurality of holding arms (52) which are clamped vertically between two vertically spaced-apart holding sections of the other module (1, 2).

17. System according to one of the preceding claims, characterized in that the base module (1) and the functional module (2) each have a U-shaped section with a U-bottom (11, 21) and U-legs (12, 24), wherein in the operating state the U-bottoms (11, 21) of the base module (1) and the functional module (2) are vertically spaced from one another and their U-legs (12, 24) extend from their respective U-bottom (11, 21) to the U-bottom (11, 21) of the respective other module (1, 2), wherein in particular the U-legs (12, 24) of the base module (1) are arranged within the U-shaped section of the functional module (2), so that the U-legs (12) of the base module (1) are between the U-legs (12, 24) of the functional module (2) are arranged,wherein, in particular in the operating state, the U-floor (21) of the functional module (2) is arranged vertically below the U-floor (11) of the base module (1) and an upper side of the U-floor (11) of the base module (1) points vertically away from the U-floor (21) of the functional module (2), wherein, in particular, the system has electrical supply lines (3) which, in the operating state, are arranged exclusively between the U-floors (11, 21) of the base module (1) and the functional module (2) and run in the longitudinal direction.

18. System according to one of the preceding claims, characterized in that the actuating element (7, 8) is arranged at least in sections on the upper side of the base module (1) and the actuating unit is arranged at least in sections below the base module (1), wherein in particular the Fixing element (5) and / or the guide element (6) is arranged on the underside of the base module (1) and / or the actuating element (7, 8) penetrates vertically from the top to the bottom through the base module (1) through a hole (14) provided in the base module (1).

19. System according to one of claims 17 or 18, characterized in that the U-legs (12) of the base module (1) form a retaining lug (121) of the base module (1), against which the actuating unit, in particular the fixing element (5), bears vertically in a pressing manner in the operating state, and / or that the U-legs (12) of the functional module (2) form a retaining lug (121) of the functional module (2), against which the retaining spring (4) bears vertically in a pressing manner in the operating state.

20. System according to one of the preceding claims, characterized in that the spring unit has on each of its transverse sides at least one pair of fixing projections (43, 44), of which a first fixing projection (43) in the operating state bears against a corresponding fixing projection (25) of the one module (1, 2) with a first vertical pressing force and of which a second fixing projection (44) bears against the corresponding fixing projection (25) with a second vertical pressing force which is smaller than the first vertical pressing force, or is vertically spaced from the corresponding fixing projection (25), wherein an action of a vertical relative force between the retaining spring (4) and the one module (1,2) leads to an increase in the second vertical pressing force or to the abutment of the second fixing projection (44) on the corresponding fixing projection (25) with the generation of a second vertical pressing force between the second fixing projection (44) and the corresponding fixing projection (25), wherein in particular the spring unit on each of its transverse sides, at least two such pairs of fixing projections (43, 44) which are spaced apart from one another in the longitudinal direction.

21. System according to one of the preceding claims, characterized in that the retaining spring (4) has a sharp-edged retaining shoulder (421) with which it bears vertically against the retaining projection in the operating state, wherein in particular the retaining shoulder (421) and the retaining projection overlap transversely by at least 1 mm and less than 5 mm, in particular less than 3 mm.

22. System according to one of the preceding claims, characterized in that the system comprises an additional actuating element (8) which can be used in the operating state or in one of the alternative operating states instead of the actuating element (7), wherein the actuating element (7) and the additional actuating element (8) form a section of an upper side of the luminaire with an actuating section when used in the respective operating state, wherein the actuating section of the actuating element (7) has a different shape than the actuating section of the additional actuating element (8).

23. System according to one of the preceding claims, characterized in that the system has an indirect lighting module (9) which comprises an LED illuminant and a cover, wherein the indirect lighting module (9) in the operating state and in particular one of the alternative operating states is arranged on an upper side of the base module (1) and is fixed relative to it and is designed to emit light vertically upwards, wherein in particular the base module (1) has at least one feedthrough which extends from an underside of the base module (1) extends to the upper side and through which an electrical supply line for supplying the indirect lighting module (9) runs in the operating state, wherein in particular the electrical supply line is connected to a supply line (3) running in the longitudinal direction within the interior space, wherein in particular the system further comprises a direct lighting module which is supplied by the supply line (3) in the operating state.

24. System according to claim 23, characterized in that the base module (1) has mounting projections (17) on its upper side, which in the operating state press the indirect lighting module (9) vertically against a section of the upper side of the base module (1) arranged underneath, wherein in particular the mounting projections (17) each extend from a transverse side wall section assigned to them to a transverse center of the base module (1), wherein a cable duct is formed vertically between each mounting projection (17) and the section of the upper side of the base module (1) lying underneath, in which cable duct at least one cable is arranged.

25. System according to claim 22 and one of claims 23 to 24, characterized in that the actuating element (7) is designed with the actuating section corresponding to an upper side section of the indirect lighting module (9), wherein the actuating section runs above the upper side section in the respective operating state and is movable along the upper side section during the actuation of the actuating element (7), wherein in particular the actuating section is designed to be translucent, wherein in particular the actuating section and a section of the cover of the indirect lighting module (9) adjacent to the upper side section are designed to be identical in light-directing manner.

26. System according to one of the preceding claims, characterized in that the system comprises a direct lighting module which, in the operating state and in particular in one of the alternative operating states, is arranged outside the interior in a receiving space (22) formed by the functional module (2) and is designed to emit light vertically downwards.

27. System according to one of the preceding claims, characterized in that the system comprises at least two base modules (1) and a coupling (10) which, in the operating state and in particular in one of the alternative operating states, is arranged in the interior and connects the two base modules (1) to one another, wherein the coupling (10) has two groups of lateral projections (103, 104) on each transverse side, wherein the groups are vertically offset from one another and each comprise at least two lateral projections (103, 104) spaced apart from one another in the longitudinal direction, wherein in the respective operating state, each group of projections (103, 104) presses against a respective associated counter-portion of each of the two base modules (1), wherein in particular the actuating unit and one of the group of projections (103, 104) press against the same counter-portion and are spaced apart from one another in the longitudinal direction,wherein in particular the coupling (10) in the operating state is pressed vertically and transversely relative to both base modules (1) by means of the lateral projections (103, 104) and is furthermore screwed relative to both base modules (1) to determine a relative position of the base modules (1) to one another in the longitudinal direction.

28. System according to claim 27, characterized in that the coupling (10) has a U-shaped cross section with a U-bottom (101) and two U-legs (102) extending vertically away from the U-base (101), wherein the lateral projections are formed by the U-legs (102), wherein in particular the coupling (10) is produced from a sheet metal by means of forming and the lateral projections are each formed by a laterally extended tab or an embossing, wherein in particular the U-legs (102) extend at their vertical ends pointing away from the U-base (101) vertically beyond the group of lateral projections (103, 104) which is further spaced vertically from the U-base (101), in particular in the operating state beyond the counter-section against which this group of lateral projections (103, 104) presses in a vertical direction away from the U-base (101).

29. System according to one of claims 27 or 28, characterized in that the coupling (10) has a vertically projecting centering projection and each of the base modules (1) has a vertically recessed centering recess, wherein the centering projection is arranged in the centering recesses of both base modules (1) in the respective operating state, or the coupling (10) has a vertically recessed centering recess and each of the base modules (1) has a vertically projecting centering projection, wherein the centering projections of both base modules (1) are arranged in the centering recess in the respective operating state, wherein in particular an interlocking of the centering projection and the centering receptacles or of the centering projections and the centering receptacle can be realized by pushing the base modules (1) from two opposite sides along the longitudinal direction onto the coupling (10).

30. System according to one of the preceding claims, characterized in that the system comprises a plurality of actuating elements (7, 8) and a plurality of retaining springs (4), wherein in the operating state at least two retaining springs (4) are arranged on the one module (1, 2) and at least two Actuating elements (7, 8) are arranged on the other module (1, 2), wherein each retaining spring (4) is assigned exactly one actuating element (7, 8) and is designed to deflect the retaining spring (4) to realize the release state, wherein in particular the system comprises a plurality of fixing elements (5), each of which is assigned exactly one actuating element (7, 8), wherein the other module (1, 2) has a plurality of positioning recesses (15) arranged one behind the other in the longitudinal direction and each of the fixing elements (5) has a positioning projection (55), wherein each of the fixing elements (5) can be arranged with its positioning projection (55) in each of the positioning recesses (15) and can be fixed in a fixed position relative to the other module (1, 2).

31. System according to one of the preceding claims, characterized in that the system has a mounting clamp (92) corresponding to the mounting connection, which is fixed to the mounting connection in the respective operating state and projects beyond the upper side of the base module (1) over such a vertical area in which the actuating element (7, 8) is arranged and is accessible from a transverse side, wherein in particular the actuating element (7, 8) projects vertically by less than 10 mm, in particular by less than 5 mm, beyond the upper side of the base module (1), wherein in particular in the respective operating state the mounting clamp (92) is arranged in a fixed position between the base module (1) and the functional module (2) and can only be released from the base module (1) after the functional module (2) has been released from the base module (1).

32. System according to one of the preceding claims, characterized in that an electrical plug-in device (31) is arranged on the base module (81) and a corresponding electrical plug-in device is arranged on the functional module (2), wherein the plug-in device (31) is fixed in a fixed position relative to the first part of the fastening device fixed to the base module (1), and the corresponding electrical plug-in device is fixed in a fixed position on the functional module (2) relative to the second part of the fastening device fixed to the functional module (2), wherein in particular one of the plug-in device (31) and the corresponding plug-in device has a conical, vertically tapered plug-in guide unit (310), and the other of the plug-in device (31) and the corresponding plug-in device has a corresponding plug-in guide unit, so that when the base module (1) and the functional module (2) are brought together vertically, any play existing perpendicular to the longitudinal direction between the plug-in guide unit (310) and the corresponding plug-in guide unit is reduced, and as a result, an alignment of the first and second parts of the fastening device takes place.

33. System according to one of the preceding claims, characterized in that the system comprises a concealing element (800) which has a cross-section in the manner of a U-shape with a U-bottom (801) and U-legs (803) and which, in the operating state of the system, is provided with a first longitudinal section between the base module (1) and the functional module (2) and with a second longitudinal section in the longitudinal direction over the functional module (2), wherein the laminating element (800) with both longitudinal sections encompasses the base module (1) from the outside, wherein in particular the laminating element (800) has leg sections with holding areas, by means of which the laminating element (800), in particular within the base module (1), in particular on the holding projection, is fixed to the base module (1).

34. System for realising a luminaire, wherein the system comprises a fastening device which comprises a spring unit and an actuating unit, and as modules at least one base module (1) and one functional module (2), wherein at least one of the modules (1, 2) is elongated in a longitudinal direction, wherein in an operating state of the system in which the luminaire is realized, the modules (1, 2) are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction, wherein in the operating state the base module (1) is arranged at least in sections vertically above the functional module (2) and the luminaire can be mounted on a ceiling (900) via a mounting connection formed by the base module (1), wherein the spring unit comprises a retaining spring (4) and the actuating unit comprises an actuating element (7, 8), wherein in the operating state the retaining spring (4) is fixed to one of the modules (1, 2) and bears vertically against a retaining projection provided on the other module (1, 2) while fixing the modules (1, 2) to one another, wherein the actuating element (7, 8) is fixed to one of the modules (1,2) is fixed and, starting from the operating state, the functional module (2) can be released from the base module (1) by actuating the actuating element (7, 8) with deflection of the retaining spring (4) thereby realizing a release state, characterized in that the actuating element (7, 8) is designed as a component separate from the retaining spring and the actuating unit comprises a return spring (61) which is connected to the actuating element (7, 8) and which opposes the movement of the actuating element (7, 8) between the operating state and the release state with a return force, wherein in particular the return force is provided such that the actuating element (7, 8) automatically returns, due to the return force, from its position in the release state relative to the module (1, 2) to which it is fixed, to its position in the operating state relative to this module (1, 2).

35. System for realising a luminaire, the system comprising a fastening device comprising a spring unit and an actuating unit, and as modules at least one Base module (1) and a functional module (2), wherein at least one of the modules (1, 2) is elongated in a longitudinal direction, wherein in an operating state of the system in which the luminaire is realized, the modules (1, 2) are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction, wherein in the operating state the base module (1) is arranged at least in sections vertically above the functional module (2) and the luminaire can be mounted on a ceiling (900) via a mounting connection formed by the base module (1), wherein the spring unit comprises a retaining spring (4) and the actuating unit comprises an actuating element (7, 8), wherein in the operating state the retaining spring (4) is fixed to one of the modules (1, 2) and bears vertically against a retaining projection provided on the other module (1, 2) while fixing the modules (1, 2) to one another, wherein the actuating element (7,8) is fixed to one of the modules (1, 2) and, starting from the operating state, the functional module (2) can be released from the base module (1) by actuating the actuating element (7, 8) while deflecting the retaining spring (4) to create a release state, characterized in that the actuating unit, in particular the fixing element (5) of the actuating unit, has at least one holding space, wherein the system comprises a plurality of electrical conductors (33) arranged in and held in the holding space, wherein in particular the holding space is formed between the fixing element (5) and a holding element (500), wherein in particular the actuating unit has a first holding space formed between the fixing element (5) and the holding element (500), and a second holding space formed at least in sections by the holding element (500) and separated from the first holding space by the holding element (500),and / or wherein in particular the system comprises a positioning element (700) which is fixed to the base module (1) and bridges a section of the base module (1), wherein in particular the, System comprises a group of electrical conductors (33), at least some of which are arranged both in the holding space and are guided between the positioning element (700) and the section of the base module (1).

36. Luminaire realized by means of a system according to one of the preceding claims, wherein the system is in the operating state.

37. A lighting set comprising a first light which is formed by means of a system according to one of the preceding claims, wherein the system is in the operating state, and a second light which is formed by means of a system according to one of claims 4 to 35, wherein the system is in the first or second alternative operating state.

38. Method for disassembling a functional module (2, 20, 200) of a luminaire from a base module (1) of the luminaire, wherein the luminaire is designed according to claim 37 and wherein the actuating element (7, 8) is moved from the operating state until the release state is reached, after which the functional module (2) is pulled vertically away from the base module (1).

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