Modular elongate luminaire

Abstract

The invention relates to a system for producing a luminaire, wherein the system comprises a fastening device, which comprises a spring unit and an actuating unit, and at least a base module (1) and a functional module (2) as modules, 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 one of the first part and 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) so as to fix 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) is able to be released from the base module (1) by actuating the actuating element (7, 8) so as to deflect the retaining spring (4), thereby realizing a released 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 and in particular subsequently reassembling the functional module on the base module.

[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 also 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 actuation unit that is both visually appealing and can be installed discreetly on a luminaire, and that is also easy to operate, particularly when the upper side of the base module is mounted close to the ceiling, and can be used for various functional modules.In particular, it has proven difficult to design the system components to be cost-effective, robust and easy to operate, while at the same time providing a system with a high degree of flexibility and functionality that preferably meets sophisticated optical 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 which are explained for embodiments with reference to one operating state can, in particular, also be present in an alternative operating state.

[0007] In the operating state, the retaining spring is fixed to a first of the modules and rests vertically on a retaining projection provided on a second of the modules, fixing the modules to one another. One of the first and second modules is designed as a base module, the other as a functional module. In the operating state, the actuating element is fixed to a specific one of the modules. In one embodiment, the retaining spring and actuating element are fixed to the same one of the modules and thus to the at least one base module or to the at least one functional module. 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 released 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 advantageous in embodiments of other solutions described here, that the actuating element is designed as a component separate from the retaining spring, wherein the actuating unit comprises a return spring which is connected to the actuating element at least during the movement of the actuating element between the operating state and the release state, in particular both in the operating state and in the release state, 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 advantageous for the actuating unit to comprise 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. In one embodiment, the actuating element is not integrated into the retaining spring, but is formed separately from the retaining spring. The return spring and the retaining spring each provide different spring properties. The retaining spring has the projection and enables spring-elastic deflection of the projection to reach the operating state starting from a separated state of the system and to reach the release state starting from the operating state of the system.The return spring is associated with the movement of the actuating element, which the actuating element performs from the operating state until it reaches the release state. The retaining spring and the return spring thus have different spring properties and are designed as different resilient sections that are coupled to the moving element in different ways during the movement of the actuating element, which it performs between the operating state and the release state. For example, the retaining spring and the return spring can be connected to or bear against a different section of the actuating element during the aforementioned movement of the actuating element. For example, the return spring can be indirectly connected to the actuating element via the retaining spring.The actuating element can be designed as a completely independent component or integrated into a component, for example, in an actuating component explained in more detail below. Such a component, which has and thus forms the actuating element, is then a separate component from the retaining spring. For example, the return spring and actuating element can be integrated into such a component.

[0008] 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 as one piece or comprised of separate components. The connection can be a material-to-material connection, a latching connection, or a connection that is ensured simply by the return spring bearing against the actuating element with its return spring force. The provision of the return spring has the particular advantage that when the actuating element is moved from the operating state to the release state by applying an external force and then separating the functional module from the base module and ending the action of the external force, it can be ensured that the actuating element moves independently and thus automatically back to the position it occupied in the operating state.

[0009] In one embodiment, the actuating element can be actuated by a relative movement of the functional module relative to the base module. In one embodiment, the retaining spring rests against the retaining projection in a first direction along the vertical direction in the operating state with a positive fit, preventing any relative movement of the first module relative to the second module in the first direction in the operating state. The first direction is therefore a direction along the vertical direction, in particular parallel to the vertical direction, and the fact that the projection of the retaining spring rests against the retaining projection of the second module and the positive fit thereby produced between the retaining spring or projection of the retaining spring and the retaining projection of the second module prevents the first module from being moved in the first direction relative to the second module in the operating state.Preferably, starting from the operating state, the first module is movable relative to the second module in a second direction running opposite to the first direction along the vertical direction, thereby actuating the actuating element and deflecting the return spring. Preferably, in the operating state, the return spring is spaced apart from the retaining projection of the second module. Preferably, in the operating state, the return spring is spaced apart from both the retaining spring and the retaining projection of the second module. Preferably, in the operating state, the actuating element is spaced apart from the retaining projection of the second module. Preferably, in the operating state, the actuating element is spaced apart from both the retaining spring and the retaining projection of the second module.

[0010] Generally speaking, the return spring preferably has at least one spring section which, in the operating state of the system, bears against a counter-section which is formed by the actuating unit or by one of the modules, i.e. base module or functional module, or by the retaining spring, for example a base section of the retaining spring. The spring section is thus arranged between the counter-section and the actuating element, at least in an intermediate state assumed by the system between the operating state and the release state, in particular in the operating state, in order to provide at least part of the explained restoring force acting on the actuating element. In an embodiment in which the counter-section is formed by the actuating unit, the counter-section can correspond to a holding section of the actuating unit which is fastened to one of the modules, in particular to the specific module. The bearing of the spring section against the counter-section or

[0011] The holding section corresponds to a connection between the counter section or holding section and the spring section, since the contact creates a connection between the counter section or holding section and the spring section that is suitable for transmitting force. In one embodiment, the holding section or counter section is formed integrally with the spring section. In another embodiment, the spring section and holding section are each formed by a different component. The return spring preferably has a plurality of spring sections, each of which rests against a respective associated counter section of the actuating unit or one of the modules in the operating state. The return spring preferably has at least a first and a second spring section, the first spring section resting against a first counter section and the second spring section resting against a second counter section.The system preferably has two actuating elements or one actuating element with two actuating sections, wherein in each case one of the spring sections of the return spring is arranged between a counter-section assigned to it and the actuating element or actuating section of the actuating element assigned to it. In one embodiment, at least some, in particular all, of the counter-sections are formed by the holding section of the actuating unit. In one embodiment, at least some, in particular all, of the counter-sections are formed by a holding section of one of the modules. In one embodiment, at least some, in particular all, of the counter-sections are formed by a holding section or base section of the holding spring. The first and second counter-sections are thus a first and a second section of the holding section. Generally speaking, the first and second counter-sections are preferably spaced transversely from one another.Generally, the first and second spring sections are preferably spaced transversely from one another. Generally, the first and second spring sections each form a transverse end of the return spring, with the two transverse ends formed by the two spring sections being opposite one another in the transverse direction. Generally, the first and second spring sections are preferably spaced apart by at least 50%, in particular at least 70%, in particular at least 80%, in particular at least 90% of a total transverse extension length of the base module.In one embodiment, the retaining spring has a plurality of projections and the second module has a plurality of retaining projections, wherein in the operating state each of the projections bears vertically against a respective retaining projection assigned to it, wherein the actuating unit has a plurality of actuating elements, wherein each of the spring sections is assigned to one of the actuating elements and each of the actuating elements is assigned to one of the projections. Preferably, exactly two retaining projections, exactly two projections, exactly two actuating elements and / or exactly two spring sections are provided. Each of the actuating elements is designed to actuate the respective projection of the retaining spring assigned to it, such that by actuating the respective actuating element the respective projection can be deflected far enough from its rest position that the projection no longer overlaps with the retaining projection assigned to it, thus enabling the functional module to be detached from the base module.

[0012] Generally, the restoring force is preferably provided in such a way that the actuating element, due to the restoring force, automatically returns from its position in the released state relative to the other module to its position in the operating state relative to this module as soon as no more force acts on the actuating element.

[0013] In one embodiment, the actuating element is fixed in a fixed position to the specific module. This allows the actuating element to be moved particularly easily relative to the other module by moving the specific module relative to the other module. For example, the actuating element can be fixed in a fixed position to the base module, so that by moving the functional module relative to the base module, the actuating element can be moved relative to the functional module. For advantageous embodiments, it can generally be essential that the actuating element, starting from the operating state, is movable relative to the second module to which the retaining spring is fixed, so that by moving the actuating element, the retaining spring can be deflected. In one embodiment, the actuating element is fixed to the specific module by a guide device, which determines the mobility of the actuating element relative to the latter.The determination of the mobility of the actuating element and thus the design of the guide device can be implemented, for example, by the actuating element being guided in a linear guide during the movement it performs from the operating state until it reaches the release state, or, for example, by the actuating element being fixed to the specific module via a holding section of the actuating unit and being connected to the holding section by a section of the actuating unit that permits movement of the actuating element only along a specific movement path. Thus, the guide device can define a predefined movement path, in particular a linear movement path, in particular a linear movement path running along the vertical direction, to which the actuating element is fixed with its movement performed between the operating state and the release state.The predefined movement path also determines the direction of the movement performed by the actuating element between the operating state and the release state, or between the release state and the operating state. In one embodiment, the actuating element is fixed to the specific module by a guide device, which defines the mobility of the actuating element relative to this module to a predefined movement path. The actuating element, in particular the actuating unit, of the fastening device is thus fixed to the specific 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 vertical direction. In one embodiment, the guide device defines a start and an end of the movement path, wherein, in the state fixed to the specific module, the actuating element is only movable between the start and end of the movement path relative to the other module. The guide device is provided by a corresponding configuration of the actuating element and the specific module and / or by the corresponding configuration of the actuating element, the specific module, and / or at least one element arranged additionally thereto, for example a fixing element.

[0014] In one embodiment, the system comprises a fixing element that is fixed in position to the specific module in the operating state and in the released state. The fixing element forms a guide by means of which the actuating element is guided during its movement between the operating state and the released state. In generally preferred embodiments in which the actuating element can move reversibly from its position in the operating state and back again from its position in the released state to its position in the operating state, the guide formed by the fixing element can provide uninterrupted guidance of the movement of the actuating element. In one embodiment, the fixing element forms said guide alone.In one embodiment, the fixing element forms the guide together with another component or another section of a component comprising the fixing element. Generally, the fixing element preferably forms the guide together with the specific module. The guide can form the guide device explained above or correspond to it. By providing a fixing element, a consistent, permanent fixation of a component of the actuating unit relative to the specific module can be ensured, which can particularly advantageously reduce the system's susceptibility to errors.

[0015] In one embodiment, the return spring is designed as a component separate from the actuating element, which counteracts the movement of the actuating element between the operating state and the release state by directly or indirectly contacting the actuating element. For example, the return spring can be integrated into a component of the system that has further properties in addition to the return spring, whereas the actuating element is designed as a component separate from this component or can be integrated into such a component separate from this component. In one embodiment, the actuating unit has an actuating component that comprises a holding section, the return spring, and the actuating element. The actuating component is preferably designed as a single piece, so that the holding section, return spring, and actuating element are integrated together in a single-piece component.Generally, the actuating component is preferably made of plastic, in particular by means of an injection molding process. In one embodiment, the holding section is arranged between the fixing element and the specific module and is fixed to the specific module by means of the fixing element. In one embodiment, fastening sections are provided on the holding section, which, in the operating state and in the released state, interact with corresponding fastening sections of the fixing element to ensure fixation between the fixing element and the actuating component. By arranging the holding section between the fixing element and the specific module, a particularly reliable fixation of the actuating component relative to the specific module can be ensured. By providing fastening sections and corresponding fastening sections, a particularly simple assembly can be enabled.Particularly preferably, both fastening sections and corresponding fastening sections are provided as explained, and the holding section is arranged between the fixing element and the specific module. This can, for example, provide the advantage that the actuating component can be connected to the fixing element independently of the fixing element's assembly on the specific module, thereby simplifying assembly. Furthermore, the arrangement of the holding section between the specific module and the fixing element allows for particularly reliable fixation of the actuating component relative to the specific module.Generally preferably, the holding section is arranged between the specific module and the fixing element with respect to the vertical direction and is thus fixed to a specific vertical position by the interaction of the specific module with the fixing element, regardless of whether the release state or the operating state is present. Generally preferably, the holding section bears against the specific module or a fixing element with its two transverse ends opposite one another in the transverse direction. The bearing can be a direct bearing or a bearing with play, ie in any case a limitation of its transverse relative mobility relative to the fixing element. As a result, the position of the holding section with respect to the transverse direction relative to the specific module can be fixed particularly reliably.Generally, the holding section preferably rests against the fixing element with its longitudinal ends opposite one another in the longitudinal direction. This can be a direct contact or a contact with some play, i.e., in any case, a limitation of its relative mobility along the longitudinal direction relative to the fixing element. This ensures that the position of the holding section with respect to the longitudinal direction is particularly reliably fixed.

[0016] By providing a fixing element and an actuating component with a holding section formed thereon, both simple assembly and reliable fixing of the actuating component and targeted determination of the mobility of the actuating element and / or the return spring can be enabled. In one embodiment, the fixing sections and corresponding fixing sections are designed as mutually corresponding locking devices, so that they ensure locking as a fixation. In the operating state and in the release state, the fixing element is thus advantageously locked relative to the holding section due to the interlocking of the fixing sections and corresponding fixing sections.

[0017] In one embodiment, the actuating component is arranged with its holding section on a section of the specific module, in particular the base module, and the actuating unit is arranged section by section at a vertical distance from the section of the specific module. In one embodiment, the section of the specific module is an upper section, wherein the actuating unit is spaced downwards from this section in sections by a vertical distance. In one embodiment, the section of the specific module is a lower section, wherein the actuating unit is arranged section by section at a vertical distance upwards from this section.In one embodiment, the actuating component is arranged with its holding section on an upper section of the specific module, wherein the actuating unit extends downwards away from said section of the specific module with a section extending away from the holding section, and in another embodiment, the actuating component is arranged with its holding section on a lower section of the specific module, wherein the actuating component extends upwards away from said section of the specific module with a section extending away from the holding section. For example, at least a section of the actuating element, in particular the entire actuating element, and / or at least a section of the return spring, in particular the entire return spring, can be spaced from said section of the specific module by the said vertical distance.In one embodiment, the specific module is the base module, wherein the base module has a U-shaped cross-section with a U-base and U-legs, wherein the upper section of the base module is formed by a downward-facing inner side of the U-base. Preferably, at least one section of the actuating element and at least one section of the return spring are each arranged at a distance from the section of the specific module by an associated vertical distance, wherein in particular the vertical distance associated with the section of the actuating element is greater than the vertical distance associated with the section of the return spring. In one embodiment, the vertical distance by which the actuating element orthe section of the actuating element is spaced from the section of the specific module, a first value in the released state and a second value in the operating state which differs from the first value, wherein the return spring has a first vertical extension length in the released state and a second vertical extension length in the operating state, wherein a difference between the first and second vertical extension lengths corresponds to a difference between the first and second values. The change in the vertical distance of the actuating element from the said section of the specific module is thus accompanied by a change in the vertical extension length of the return spring. As a result, a restoring force can be generated on the actuating element by the return spring in a particularly simple and advantageous manner when the actuating element is deflected from its rest position which it occupies in the operating state.Generally, the return spring and actuating element are preferably in their rest position in the operating state. Generally, the return spring does not exert any restoring force on the operating element in the operating state. In one embodiment, the first value of the vertical distance of the actuating element is greater than the second value, and the first vertical extension length is greater than the second vertical extension length. In another embodiment, the first value of the distance of the actuating element is smaller than the second value, and the first vertical extension length of the return spring is smaller than the second vertical extension length.

[0018] In one embodiment, the actuating element or the return spring can be connected to the retaining spring by a relative movement relative to the retaining spring, in particular can be locked thereto. The actuating element and / or the return spring and the retaining spring are thus arranged on the functional module and base module in such a way that they can be connected to one another by a defined relative movement. Generally speaking, the return spring and actuating element are preferably coupled in terms of movement during the movement of the actuating element, which it performs between the operating state and the release state. Thus, a corresponding connection, in particular for establishing a defined deflection of the retaining spring, can be established in one embodiment by the actuating element, and in another embodiment by the return spring.In one embodiment, the return spring has a locking function, so that by locking the retaining spring with the return spring, a defined deflection of the retaining spring is ensured, wherein the spring property of the return spring can preferably provide the lockability. Preferably, the relative movement is a vertical relative movement, in particular a linear relative movement along the vertical direction. Particularly preferably, the actuating element or the return spring and retaining spring can be locked together by the relative movement. Particularly preferably, the relative movement between the actuating element and retaining spring can be generated, starting from the operating state, by a relative movement, in particular a vertical relative movement, in particular a linear relative movement along the vertical direction, between the base module and the functional module.Thus, the retaining spring and actuating element can preferably be moved relative to each other and connected to each other by moving the base module and functional module relative to each other.

[0019] In one embodiment, the actuating element is designed to correspond to the retaining spring in such a way that, starting from the operating state, it can initially be connected to the retaining spring and, in the course of its movement relative to the retaining spring from the operating state until the release state is reached, causes an increasing deflection of the retaining spring and the return spring and, in particular, can be released from the retaining spring again during its movement relative to the retaining spring from the operating state until the release state is reached. Thus, a connection between the retaining spring and the actuating element can initially be created by the movement of the actuating element and thus the relative movement of the actuating element to the retaining spring, after which this connection is released again during the movement of the actuating element from the operating state until the release state is reached.By establishing the connection - either during the process of establishing the connection or through the subsequent movement of the actuating element while maintaining the connection - a targeted deflection of the retaining spring can occur, whereby releasing the connection can advantageously enable easy detachment of the functional module from the base module. For example, the detachment can be facilitated or completely realized through the interaction between the return spring, actuating element, and retaining spring. The implementation and release of the connection can occur, for example, in that the mobility of the actuating element, which it has in the operating state relative to the retaining spring, is determined by the components of the system, so that the predefined movement of the actuating element first creates the connection and then releases this connection.For example, the connection can be a snap-in connection that is first established and then released again. For example, the connection can be a connection by means of contact with one another, wherein during the movement that the actuating element performs from the operating state until the release state is reached, a positive guidance of the actuating element relative to the retaining spring is provided due to the definition of a movement path of the actuating element, whereby a defined contact and / or sliding of the actuating element relative to the retaining spring or on the retaining spring can be ensured, which is no longer provided, for example, at the end of the defined movement path. For example, the direction of movement of the functional module to implement the connection can be a direction opposite to the determined direction of movement of the further movement, in particular parallel to the vertical direction.

[0020] In one embodiment, the functional module is fastened to the base module by the spring unit in the operating state in such a way that a vertical free space is formed between vertically opposing sections of the functional module and base module, wherein, starting from the operating state, the functional module can be moved relative to the base module by actuating the actuating element to realize the deflection of the retaining spring by the actuating element. Thus, a vertical free space can be specifically provided between vertically opposing sections of the functional module and base module in the operating state, which is reduced starting from the operating state to reach the release state by moving the functional module and base module relative to one another, wherein the actuating element is actuated by moving the base module and functional module relative to one another, and the retaining spring is thereby deflected.Thus, the actuation of the actuating element to achieve the release state can be carried out particularly easily starting from the operating state, in particular when the base module is arranged with its upper side in the immediate vicinity of a ceiling and thus is arranged vertically with little or no distance from the ceiling.For example, in one embodiment, the system is designed to enable such a mounting of the base module on the ceiling that the base module is fastened with its upper side or with a mounting element provided on its upper side, in particular a mounting clamp, to a horizontally flat ceiling, so that it is fixed in a predetermined vertical position relative to the ceiling, whereas the functional module is spaced apart from this horizontally flat ceiling in the operating state, so that not only is there a vertical free space between vertically opposite sections of the base module and the functional module in the operating state, but there is also a corresponding free space between the upper side of the functional module and the horizontally flat ceiling, which can be reduced accordingly for actuating the actuating element.In general, the actuating element can preferably be actuated by moving the functional module relative to the base module, starting from the operating state, in particular moving it vertically, in particular initially moving it vertically upwards and then vertically downwards. In one embodiment, in order to implement the release state, starting from the operating state, the functional module is first moved in a first direction along the vertical direction relative to the base module while reducing the vertical free space between the vertically opposite sections of the functional module and the base module, creating a connection between the actuating element and / or the return spring and the retaining spring, and then moved in a direction opposite to the first direction along the vertical direction relative to the base module while actuating the actuating element.For example, the first direction can be an upward direction and the second direction can be a downward direction.

[0021] In one embodiment, the return spring is directly or indirectly connected to the actuating element during the movement of the actuating element between the operating state and the release state to generate the restoring force. Generally speaking, there is preferably a movement coupling between the return spring and the actuating element during the said movement of the actuating element. This movement coupling can be ensured, for example, by a contact, by a locking or by a materially integral connection. In one embodiment, the actuating element or the return spring can be locked to the spring leg during the movement of the actuating element between the operating state and the release state upon reaching a defined deflection of the spring leg to secure the defined deflection.The actuating element can thus generate the deflection of the retaining spring through its movement, which causes an increasing deflection of the retaining spring during the movement of the actuating element relative to the retaining spring, whereby upon reaching a defined deflection the locking of the retaining spring with the actuating element and / or the return spring is realized.

[0022] 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 while deflecting the retaining spring, thus creating a release state. In one embodiment, the spring unit is fixed to the first module and the actuating unit is fixed to the second module, wherein in particular the functional module can be the first module and the base module the second module. In another embodiment, the spring unit and the actuating unit are fastened to the same one of the modules.

[0023] In one embodiment, the retaining spring has a spring leg on which a projection is provided, with which it bears vertically against the retaining projection in the operating state. The spring leg has a guide section corresponding to the actuating element. The guide section and projection are thus formed jointly by one retaining leg and are coupled to one another in terms of movement. Preferably, the guide section bears against the actuating element in the released state and in particular in the operating state. Preferably, the position of the guide section is determined both in the operating state and in the released state by the position of the actuating element. In one embodiment, starting from the operating state, the actuating element can first be connected to the projection of the spring leg by a movement of the functional module relative to the base module and then by a further movement of the functional module relative to the baseThe module can be moved in a specific direction of movement, initially due to the connection existing between the spring leg and the actuating element, together with the projection of the spring leg to reach the end of the movement of the actuating element. Subsequently, by continuing the further movement in the specific direction of movement while increasing the deflection of the spring leg, the projection of the spring leg can be released from the actuating element. The release can be achieved, for example, by deflecting the projection on the actuating element and / or by securing the spring leg in a defined deflection, for example by means of the return spring. Thus, firstly, by a defined movement of the functional module relative to the base module, the projection of the spring leg can be connected to the actuating element and then, by a further movement of the functional module, firstly, theThe projection of the spring leg can be moved together with the actuating element until the end of the actuating element's movement is reached, so that the actuating element can no longer move, after which the further movement of the functional module is continued, thereby achieving a release of the projection of the spring leg from the actuating element. In one embodiment, the end of the actuating element's movement is defined by the retaining projection of the second module, which thus limits the movement of the actuating element. This allows a high level of functionality to be achieved with particularly simple manufacture, since the retaining projection is designed both to rest on the projection of the spring leg of the retaining spring, in order to ensure that the base module and the functional module are fixed to one another in the operating state, and is also used to define the end of the actuating element's movement. In one embodimentAt least one of the projection of the spring leg and the actuating element has an inclined surface pointing towards the other projection of the spring leg and the actuating element, in particular along the transverse direction, whereby the release of the projection from the actuating element during the previously explained movement is particularly simplified. In one embodiment, the projection of the spring leg of the retaining spring and the actuating element overlap transversely less in the operating state as well as in the release state, as well as in every intermediate state of the system reached between the operating state and the release state, than the projection of the spring leg of the retaining spring and the retaining projection of the second module overlap in the operating state. The term "intermediate state" refers to any state of the system that the system assumes while the actuating element moves from the operating state until the release state is reached.relative to the retaining spring and this movement of the actuating element, as explained in the embodiments, may be accompanied by further movements of components of the system. Each state defines a specific arrangement and thus position of the components or parts of the system relative to one another. In one embodiment, the projection of the spring leg of the retaining spring and the actuating element overlap transversely by at least 0.5 mm, in particular by at least 1 mm, in particular by at least 1.5 mm in at least one intermediate state reached between the operating state and the release state. In one embodiment, they overlap in this intermediate state by less than 3 mm, in particular less than 2.5 mm, in particular less than 2 mm. Preferably, the projection of the spring leg of the retaining spring and the actuating element overlap transversely byalways less than 3 mm, in particular less than 2.5 mm, in particular less than 2 mm, in particular less than 1.5 mm. Generally, the retaining projection of the second module is preferably made of a harder material than the actuating element. For example, the retaining projection can be made of metal, whereas the actuating element can be made of plastic.

[0024] 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.In one embodiment, the retaining spring rests against the retaining projection within a vertical extent of the receptacle, so 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. In this way, interaction between the retaining spring and the retaining projection can be protected and made robust and, at the same time, the retaining spring and the retaining projection can be laterally concealed by the functional module. In one embodiment, the actuating element moves at least predominantly within the receptacle during the movement it performs between the operating state and the release state, which it performs relative to the retaining spring. Preferably, the actuating element is arranged at least predominantly, in particular completely, within the receptacle in the operating state.In one embodiment, the actuating element is comprised of an actuating component, the actuating component extending with a larger proportion of its total vertical extension length within the receptacle than in the released state, wherein in particular the actuating element is arranged within the receptacle in the operating state and in the released state and / or the actuating component is arranged with at least 80%, in particular at least 90%, in particular 100% of its total vertical extension length within the receptacle in the operating state. 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 run from their respective U-base to the U-base of the respective other module.The interior space provided between the base module and the functional module in the operating state preferably extends at least in sections between the U-shaped bases of the base module and the functional module. The U-legs of the base module are preferably arranged within the U-shaped section of the functional module, such that the U-legs of the base module are arranged between the U-legs of the functional module, such that the functional module encloses the U-shaped section of the base module transversely on both sides. In general, the U-legs extend along the transversal direction, i.e. transversely, between the U-legs, and the U-legs extend vertically upwards starting 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-shaped base of the functional module is preferably arranged vertically below the U-shaped base of the base module. Accordingly, an upper side of the U-shaped base of the base module preferably points vertically away from the U-shaped base of the functional module. Accordingly, the underside of the U-shaped base of the base module points vertically towards the U-shaped base of the functional module. The system preferably has electrical supply lines which, in the operating state, are arranged exclusively between the U-shaped 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.In one embodiment, the U-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 pressing engagement during operation. The retaining lug can in particular form one of the above-explained fixing sections and / or the fixing projection of the other module, against which the actuating unit, in particular the fixing element of the actuating unit, bears vertically in pressing engagement with at least one fixing arm, whereby the actuating unit or the fixing element is vertically clamped or against which the fixing spring bears during operation. In one embodiment, the U-legs of the functional module form a retaining lug of the functional module, against which the fixing spring bears vertically in pressing engagement during operation. The retaining lug can thus ensure that the fixing spring is fixed relative to the functional module.Preferably, the functional module has two vertically spaced-apart holding sections, one of which is formed by the described retaining lugs of the U-legs and the other by the U-shaped base of the functional module, with the retaining spring being vertically compressed between these holding 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.

[0025] 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.

[0026] 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.

[0027] 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.The U-shaped base of the U-shaped section preferably 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. The trough-shaped section preferably 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). The side walls are preferably free of projections or smooth or free of undercuts on their mutually facing sides, which delimit the interior of the trough-shaped section, such that a receiving space which is as large as possible in its transverse width and can be flexibly equipped is ensured. In a.

[0028] Operating state alternatively realizable first alternative

[0029] In the operating state 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. In general, the first alternative fastening device and the fastening device are preferably designed identically to one another.In the preferred embodiment, the first alternative functional module can thus be moved towards the base module to implement the first alternative operating state with the second part of the first alternative fastening device attached thereto, to which the first part of the fastening device is fixed, wherein when the base module and the first alternative functional module are arranged next to one another, 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.

[0030] 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.Generally, 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.

[0031] 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 extending 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 that 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 that 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.

[0032] 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 on the upper side of the base module by means of the mounting projections. Preferably, the mounting projections press against the cover of the indirect lighting module in the operating state. Preferably, the base module has the described feedthrough through which an electrical supply line runs, wherein the indirect lighting module completely covers 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.

[0033] 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.

[0034] In one embodiment, the system comprises at least two base modules and a coupling, wherein the base modules are connected to one another by the coupling in the operating state.

[0035] The present invention proposes as a generally advantageous further solution, 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.

[0036] In one embodiment, starting from the operating state, the release state can be realized by means of movement of the actuating element and starting from the release state, the functional module can be detached and removed from the base module to realize a separated state of the system, wherein starting from the separated state of the system, the operating state can be realized without movement of the actuating element.In the advantageous embodiment, as explained, the release state can be realized starting from the operating state by actuating and thereby induced movement of the actuating element, wherein after the release state has been achieved, the functional module can be released from the base module and removed therefrom, so that the functional module and base module can be brought into a distance, in particular any desired distance, from one another, thereby providing a separated state of the system because the base module and functional module are separated from one another. In one embodiment, the system is designed to assume the separated state starting from the release state by removing the functional module from the base module without any actuation exerted on the actuating element and / or the retaining spring and / or the return spring.In another embodiment, after the functional module has been removed from the base module, a locking connection of the actuating element and / or the return spring with the retaining spring is released to achieve the separated state. In any case, in the separated state, the functional module and base module are separated from one another, and in the preferred embodiments explained here, the operating state can be realized starting from the separated state, as explained here. Starting from this separated state, the functional module can then preferably be fastened to the base module by the retaining spring interacting with the retaining projection, as explained, without any movement of the actuating element being required for this connection of the functional module to the base module starting from the separated state until the operating state is reached.Thus, the actuating element can, on the one hand, enable the simple implementation of the release state starting from the operating state and thus the simple disassembly of the functional module from the base module, wherein the transition between the release state and the operating state can be carried out in a particularly simple and reversible manner, since actuation of the actuating element to implement the operating state starting from the separated state is not necessary. Generally speaking, in the operating state, the actuating element is arranged at a vertical distance from the retaining spring, in particular arranged vertically above the retaining spring, or in the operating state, the actuating element overlaps the retaining spring over a smaller vertical extension length than it overlaps during the movement which it performs between the operating state and the release state. Generally speaking, the actuating element is spaced from the retaining projection in every operating state.

[0037] In one embodiment, the retaining spring rests against the retaining projection in a first direction, which runs along the vertical direction, with a positive fit, preventing a relative movement of the first module relative to the second module in the first direction in the operating state. Starting from the operating state, the actuating element acts on the retaining spring in the first direction to deflect the retaining spring to reach the release state. Generally speaking, the actuating element is preferably arranged above the retaining projection in the operating state and, during its movement, starting from the operating state, acts on the retaining spring from above to deflect the retaining spring.

[0038] 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 both 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.

[0039] 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 adjacent channels or 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 is fixed relative to one another. In one embodiment, the holding space is formed between the fixing element and a holding element. The fixing element and the holding element are preferably detachably connectable to one another and detachably connected to one another in the operating state.For example, the holding element and the fixing element can have corresponding locking devices by means of which they are releasably locked together 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 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 the 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 holding element can delimit the channel on an opposite second vertical side. In one embodiment, the fixing element and the holding element are fixed to the base module. Preferably, the holding 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 holding element are arranged on the U-shaped base of the base module and fixed thereto.

[0040] 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 luminaire can be realized, with only electrical conductors arranged in the first holding space, and wherein, in a second operating state, a second luminaire is realized, with a first group of electrical conductors arranged in the first holding space and a second group of electrical conductors 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.

[0041] The conductors are preferably designed as conductor wires sheathed with insulation. Each conductor is preferably clamped in the channel assigned to it and held therein by this. Generally speaking, the electrical conductors are preferably arranged unchanged in the holding space, in particular in one of the channels, both in the operating state and in the released state, and are held therein. The system preferably has a plurality of actuating units which, in the operating state, are arranged one behind the other and spaced apart from one another in the longitudinal direction. 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. All actuating units, in particular all fixing elements, are preferably designed identically. By arranging a plurality of actuating units orBy means of fixing elements arranged 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 functional module. In general, the fixing elements, in particular the entire actuating units, are preferably fixed to the base module. In general, at least two, in particular exactly two actuating units and the same number of spring units are provided within the longitudinal extent of the functional module when implementing an operating state with several functional modules within the longitudinal extent of each functional module. In this way, a positionally fixed fixing in the operating state of the functional module on the base module can be ensured particularly reliably. By providing exactly two actuating units orSpring units allow such a functional module to be released from the base module particularly easily 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.

[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. 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 present invention proposes as a generally advantageous further solution, which can also be advantageously provided in embodiments of other solutions described here, that 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 thus fixed to the base module and can thus be freely moved together with it, while the second part of the fastening device is fixed to the functional module and can thus be freely moved 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 a release of the functional module from the base module is prevented due to the retaining spring bearing against 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 released from the base module without further actuation of the actuating element. Thus, starting from the operating state, the functional module can preferably only be released from the base module without causing damage if the actuating element has previously been actuated and the release state has been achieved by actuating the actuating element.

[0046] The present invention proposes, as a generally advantageous further solution, a method for realizing a separated state of a luminaire starting from an operating state of the luminaire. The luminaire has a fastening device which comprises a spring unit and an actuating unit, wherein the spring unit comprises a retaining spring and wherein the actuating unit comprises an actuating element. The luminaire further has at least two modules, of which at least one is designed as a base module and at least one other as a functional module. At least one of the modules is designed to be elongated in the longitudinal direction. When the luminaire is in an operating state, the modules are held together by the fastening device and together enclose an interior space of the luminaire perpendicular to the longitudinal direction.When the light is in the operating state, the base module is arranged at least in sections vertically above the functional module, and the retaining spring is fixed to a first of the modules and lies vertically on a retaining projection provided on a second of the modules, fixing the modules to one another. The actuating element is fixed to a specific one of the modules, thus either to the base module or to the functional module. When the light is in the separated state, the base module and functional module are separated from one another. In the method according to the invention, in order to achieve the separated state, starting from the operating state of the light, the actuating element is moved relative to the retaining spring, in particular by moving the specific module, in particular the functional module, as a result of which the retaining spring is deflected.By moving the actuating element in this way, a return spring directly or indirectly connected to the actuating element during the movement is deflected in such a way that the return spring engages with the retaining spring, or after the functional module has been released from the base module, the actuating element returns to its position in the operating state relative to the specific module due to the return spring. Particularly preferably, after the separation state has been achieved, the operating state is subsequently realized again, starting from the separation state, by moving the functional module relative to the base module without moving the actuating element.

[0047] The invention further relates generally to a luminaire which is manufactured by means of a system according to the invention or which is manufactured by reaching the operating state of the luminaire starting from the separated state of the luminaire by means of a method according to the invention.

[0048] The various solutions according to the invention and their embodiments may each have features that are disclosed in connection with other embodiments, in particular also embodiments of other solutions described herein, and / or have features that are disclosed herein in connection with solutions known from the prior art.

[0049] In one embodiment, the system comprises a plurality of actuating elements and a plurality of retaining springs. Each of the actuating elements is assigned to a respective retaining spring. In the operating state, at least two retaining springs are arranged on one module and at least two actuating elements are arranged 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 in order to realize the release state. Thus, by actuating or moving the actuating element, as explained, the

[0050] The retaining spring is deflected so that the release state is reached. To achieve the release state of the system, all actuating elements are preferably actuated, each of which is assigned to a retaining spring of the same module, so that one module can be easily removed from the other module starting from the release state.

[0051] 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. The functional module naturally has two longitudinal ends, between which it extends along its longitudinal extent.The longitudinal end region at the respective longitudinal end refers to the region over which the functional module extends from the longitudinal end over less than 30%, in particular less than 20%, in particular less than 15% of its longitudinal extension length.

[0052] 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 area in which the actuating element is arranged and is accessible from a transverse side. The mounting clamp preferably projects vertically beyond the top 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.

[0053] 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 particularly advantageously 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 engage with one another, the first and second parts of the fastening device also engage with one another and cooperate to create the fastening device. In one embodiment, one of the plug-in device and the corresponding plug-in device has a conical, vertically tapered plug-in guide unit, and the other of the plug-in device and the corresponding plug-in device has a corresponding plug-in guide unit, so that when the base module and the functional module are brought together vertically, any play existing perpendicular to the longitudinal direction between the plug-in guide unit and the corresponding plug-in guide unit is reduced, and the first and second parts of the fastening device are thereby aligned.Thus, the base module and functional module can be moved vertically, i.e. along the vertical direction, towards one another, the operating state being realized 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 two in a first engagement of the plug-in guide unit and the conical plug-in guide unit 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.

[0054] The invention further relates to a luminaire realized by means of an embodiment of a system according to the invention. The system is in the operating state or in an alternative operating state, so that the components of the system are arranged relative to one another as explained for the operating state. It should be noted again at this point that the explanation with reference to the operating state can, of course, always also 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 lights can be realized by means of the system according to the invention, wherein when a first light is realized, the system is in the operating state, when a second light is realized, the system is in the first alternative operating state, and when a third light is realized, the system is in the second alternative operating state.

[0055] The invention is explained in more detail below with reference to ten figures using exemplary embodiments.

[0056] They show:

[0057] Figure 1: in various schematic principle representations, a simplified representation of possible implementations of a luminaire according to the invention;

[0058] Figure 2: in various schematic diagrams

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

[0060] Figure 3: in various schematic diagrams

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

[0062] Figure 4: in various schematic diagrams

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

[0064] Figure 5: in various schematic diagrams

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

[0066] Figure 6: in various schematic diagrams

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

[0068] Figure 7 : in various schematic representations

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

[0070] Figure 8: in various schematic diagrams

[0071] Components of an embodiment of a system according to the invention;

[0072] Figure 9: in various schematic diagrams

[0073] 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, which forms part of the fastening device of the system. The various functional modules 2, 20, 200 are each referred to here as functional module 2, 20, 200, or as first additional functional module or second additional functional module if a conceptual distinction is required. 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 additional functional module 2 has one which, in the operating state, is located exclusively vertically below the base module.

[0075] 1 extending receiving space, 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 arranged below the base module 1 in the operating state, and the second further functional module 200 has a receiving space which 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, a coupling 10, and furthermore, electrical components 100 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 or the relative arrangement thereto. Functional module 20 and first further functional module

[0076] 2 are shown without such system components for explanatory purposes only. In the following exemplary illustrations of embodiments, properties of the respective embodiment are explained using one of the functional modules 2, 20, 200 as an example. In embodiments in which the system has several different functional modules 2, 20, 200, corresponding properties may be present with respect to all other functional modules 2, 20, 200 of the system.

[0077] Figure 2, comprising Figures 2a, 2b and 2c, shows the base module 1 as well as a fixing element 5 and an actuating component 7 of an embodiment of a system according to the invention in various simplified schematic representations for explanatory purposes. Figure 2a shows a view of a longitudinal section of the base module 1, obliquely vertically from below, wherein Figure 2b also shows, for explanatory purposes, a fixing element 5 and an actuating component 7 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 2c shows the base module 1, fixing element 5 and actuating component 7 in their relative position to one another, which they occupy in the operating state or any operating state, wherein Figure 2c shows a section perpendicular to the longitudinal direction.From Figure 2, comprising Figures 2a, 2b, and 2c, it can be seen that the base module 1 has a U-shaped section with a U-shaped base and U-shaped legs, wherein the fixing element 5 and the actuating component 7 are arranged on an underside of the U-shaped base of the base module 1. As explained in more detail below in connection with Figure 4, the fixing element 5 has a fastening section 53, to which the actuating component 7 is held by means of a corresponding fastening section 73, which is generally advantageous according to the invention. Thus, the fixing element 5 and the actuating component 7 can be assembled even before the operating state is realized, as shown in simplified form in Figure 2b for the sake of explanation, in such a way that they can be treated as a coherent component that can be fixed to the base module 1, which is generally advantageous according to the invention.For example, this component consisting of fixing element 5 and actuating component 7 can be moved to the base module 1 and fastened thereto, as indicated by a dashed arrow in Figures 2a and 2b. To ensure that fixing element 5 and actuating component 7 are always fixed in a predetermined longitudinal position relative to the base module 1, the fixing element has two positioning projections 55, and the base module 1 has several pairs 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, with holding arms 52 of the fixing element 5 being deflected transversely as they are 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 fastening projection 520 on each of its holding arms 52, by means of which it presses vertically against the corresponding holding lug 121 of the respective U-leg 12 of the base module 1 in the operating state. 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 formed by the U-bottom 11 of the base module 1 and the lower of the two holding sections being formed by the holding lugs 121 of the U-legs 12 of the base module 1. In the operating state, the actuating component 7 is arranged, on the one hand, between the U-bottom 11 of the base module 1 and the fixing element 5 and 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.In the operating state, the actuating component 7 rests on each transverse side with an oblique section 702 against 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 actuating component 7 is guided particularly advantageously relative to the base module 1. Figure 2 further shows that the fixing element 5 has a plurality of transversely, i.e. along a transverse direction, adjacently 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 a pressed-in manner in each of these.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. Elements or element sections of the system can pass through the holes 14 from the top of the base module 1 in the operating state. From Figure 2a it can also be seen that the base module 1 has a mounting connection formed by two channels 16 and mounting projections 17 on its top side. By means of the mounting projections 17, an indirect lighting module, which is not shown here, can be held in a simple manner on the top side of the base module 1.Furthermore, it can be seen from Figure 2a 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.

[0078] Figure 3, comprising Figures 3a, 3b, 3c, 3d, and 3e, schematically shows a functional module 2 and a retaining spring 4, as well as a mounting of the functional module 2 on a ceiling 900 in various schematic representations. While Figures 3a and 3c show an arrangement of the retaining spring 4 and the functional module 2 in relation to one another, which the two have in the operating state, 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. From Figure 3, it can be seen 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 and the spring legs 42 forming the U-shaped legs 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. As explained in more detail below with reference to Figures 5, 6, and 7, the guide section 422 is designed as an inclined surface section on which the actuating element 71 of the actuating component 7 can slide to deflect the retaining spring 4. In Figures 3a, 3b, and 3c, the retaining spring 4 is shown in its rest position. A deflection of the retaining spring 4 due to the actuating element 71 sliding along one of the guide sections 422 causes a deflection of the respective spring leg 42 toward the transverse center, which is generally advantageous according to the invention.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-shaped base 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 magnitude of the second vertical pressing force depending on the magnitude of the acting vertical relative force. Figure 3b shows 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 the first fixing projection 43 and the other as the second fixing projection 44.

[0079] Figures 3d and 3e show how a luminaire manufactured using an embodiment of the system can be fixed to a ceiling 900. In the exemplary embodiment shown, the base module 1 is mounted to a ceiling 900 by means of several mounting clamps 92, which is generally advantageous according to the invention. The respective mounting clamp 92 engages behind vertical projections of the mounting connection of the base module 1. The functional module 2, on which at least one electrical functional module, in particular an LED module, is typically arranged in a luminaire, is fastened to the base module 1 by the holding clamp 4. The mounting clamp 92 holds the functional module 2 at a slight distance relative to the ceiling 900.To actuate the actuating element 71, as explained in more detail below, the functional module 2 can thus be moved upwards starting from the arrangement shown in Figure 3e, so that starting from the operating state, the release state can be reached and then the functional module 2 can be removed downwards from the base module 1, while the base module 1 remains attached to the ceiling 900.

[0080] Figure 4, comprising Figures 4a, 4b and 4c, shows schematically the actuating component 7 of an embodiment of the system in various basic representations, in Figure 4c together with a fixing element 5 of the system. The actuating component 7 is in the present case designed as a one-piece plastic body, which is produced by means of an injection molding process, and comprises a holding section 70, a return spring 72 with two spring sections and two actuating elements 71 as well as two fastening sections 73. The fastening sections 73 are designed to correspond to corresponding fastening sections 53 of the fixing element 5. The fastening sections 73 are designed as locking projections, whereas the corresponding fastening sections 53 are designed as a step-like recess.By locking the fastening sections 73 with the corresponding fastening sections 53, the actuating component 7 is held captively on the fixing element 5 with respect to the vertical direction Z. Due to the fact that in such a locked state the actuating component 7 engages around the fixing element 5 with respect to the transverse direction Y and the fixing element 5 engages around the actuating component 7 with respect to the longitudinal direction, the actuating component 7 is held in a defined manner on the fixing element 5 in the locked state. In the operating state in which the fixing element 5 is fastened to the base module 1, as shown, for example, in Figure 2c, the actuating component is arranged with its holding section 70 between the U-shaped base 11 of the base module 1 and the flat upper side section 51 of the fixing element 5 and is thereby reliably held on the base module 1 by means of the fixing element 5, guided relative to the base module.Due to this guidance of the actuating component 7 relative to the base module 1 formed by the fixing element 5 together with the base module 1, the actuating elements 71 are also guided relative to the base module 1, since the actuating elements 71 are each connected to the holding section 70 by a spring section of the return spring 72 in such a way that the mobility of the actuating elements 71 is determined by the interaction of the fixing element 5, base module 1, holding section 70, return spring 72 and the actuating element 71 itself and thus the actuating elements 71 can only move along a predefined movement path relative to the base module 1. The actuating elements 71 can move from the operating state to realize the release state and correspondingly from the release state to realize the operating state only along the movement path predefined by the entire arrangement.

[0081] Figure 5, comprising Figures 5a and 5b, shows the base module 1 with the fixing element 5 and the actuating component 7 fixed thereto, as well as the functional module 20 with the retaining spring 4 fixed thereto, both in their relative positions to one another, which they occupy in the operating state (Figure 5b), and in a separated state (Figure 5a). It can be seen that both in the operating state and in the separated state, the retaining spring 4 remains unchanged on the functional module 20, and the fixing element 5 and the actuating component 7 remain unchanged on the base module 1.Starting from the separated state according to Figure 5a, the operating state and thus the arrangement of functional module 20 and base module 1 relative to one another shown in Figure 5b can be realized by displacing functional module 20 linearly parallel to the vertical direction relative to the functional module, wherein during this displacement the retaining spring 4 slides with its guide sections on the U-legs 12 and thus the retaining lugs 121 until the retaining shoulders 421 have reached vertically above the retaining lugs 121 and thus engage behind them, whereby the functional module 20 is reliably fixed to the base module 1. To ensure such reliable fixation, the retaining shoulder 421 is designed as a sharp-edged retaining shoulder. Starting from the arrangement shown in Figure 5b, a functional module 20 cannot be detached from the base module 1 without deflecting the retaining spring 4 and without causing damage by performing a vertical relative movement.Rather, in the embodiment shown, the retaining spring 4 must first be deflected, ie its spring legs 42 with projections or retaining shoulders 421 provided thereon must be deflected towards the transverse center of the functional module 20 until the retaining shoulders 421 no longer overlap with the retaining lugs 121, before the functional module 20 can be pulled off the base module 1 and thus a separated state according to Figure 5a can be achieved.

[0082] Figure 6, comprising Figures 6a, 6b and 6c, shows the base module 1, actuating component 7, functional module 20 and retaining spring 4 of the embodiment shown in Figure 5 without the fixing element 5 for illustrative purposes. Figure 6a shows the relative position of the aforementioned components of the system, which they occupy in the operating state. In order to reach the release state from the operating state, the functional module 20 must first be moved upwards relative to the base module 1 parallel to the vertical direction Z, whereby the retaining shoulders 421 are brought into engagement with the actuating elements 71, which in this case takes place in the manner of a latch. By moving the functional module 20 upwards relative to the base module 1, the retaining shoulders 421 or the projections of the retaining spring 4 are connected to the actuating elements 71.The vertical mobility of the functional module 20 relative to the base module 1 is ensured by the fact that, as can be seen in Figure 6a, the functional module 20 and the base module 1 are spaced apart from one another by vertically opposing sections, so that a free space is provided between these vertical sections of the functional module 20 and the base module 1, which free space is reduced during the movement of the functional module 20 upwards relative to the base module 1.Once the connection between actuating elements 71 and retaining spring 4 has been established, the functional module 20 can then be moved downward relative to the base module 1. Due to the connection, the actuating elements 71 are actuated and moved vertically downward until they rest against a respective associated retaining lug 121 of the base module, which each form a retaining projection of the base module 1 and define an end of movement of the actuating elements 71, since during the downward movement of the functional module 20 relative to the base module 1, the respective actuating element 71 can only move downward until it comes into contact with the retaining projection or the retaining lug. Reaching the end of movement or the contact of the actuating elements 71 with the respective associated retaining projection of the base module 1 or the respective associated retaining lug is shown in Figure 6c.It is evident that, starting from Figure 6c, the functional module 20 can be moved further downward relative to the base module 1, while the actuating elements 71 remain in their vertical position, so that the holding shoulders 421, starting from the position shown in Figure 6c, slide a final distance on the respectively assigned actuating element 71, whereby the holding spring 4 is deflected to such an extent that the projections of its spring legs or its holding shoulders 421 no longer overlap with the holding projections of the base module 1 and thus the functional module 20 can be pulled vertically downwards from the base module 1. From a view of Figures 6a to 6c together, it is evident that a deflection of the holding spring 4 already occurs during the connection of the holding spring 4 to the actuating elements 71, which is shown in Figure 6b.To finally reach the release state, in which the functional module 20 can be pulled downwards from the base module 1 without the retaining spring 4 preventing such a withdrawal, the retaining spring 4 is deflected even further starting from the position shown in Figure 6c, whereby - generally advantageous according to the invention - the deflection caused by the connection is greater than the deflection of the retaining spring, which then occurs after the actuating elements 71 have reached their respective end of movement, which limits their movement, which they perform starting from the operating state until reaching the release state.

[0083] In Figure 7, comprising Figures 7a and 7b, the interaction between the actuating component 7 and the retaining spring 4 is shown in more detail in a simplified schematic form. The relative position of the retaining spring 4 and the actuating component 7 shown in Figure 7a corresponds to the relative position according to Figure 6b. The relative position shown in Figure 7b corresponds to the relative position according to Figure 6c. When viewed together, Figures 7a and 7b show that during the movement of the actuating elements 71, which they carry out starting from the operating state until they reach the release state, the return spring 72 is increasingly deflected, whereby the return spring 72 exerts a restoring force on the actuating elements 71. As soon as the retaining shoulders 421 are moved vertically downwards away from the actuating elements 71, orGenerally advantageously, as soon as the connection between the at least one actuating element 71 and the retaining spring is released during the release state from the operating state, the return spring 72 causes the actuating elements to return to the position they occupied in the operating state. Thus, no external force is required to release the

[0084] Actuating elements or the at least one actuating element 71, after reaching the release state, are returned to the position which they or it holds in the operating state.

[0085] 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, 20, 200 is generally advantageously designed as an extruded profile with a cross-section that is constant along its longitudinal extent. According to the invention, the coupling 10 is generally advantageously manufactured from sheet metal by forming, in particular by stamping.

[0086] Figure 8, comprising Figures 8a, 8b, and 8c, shows various components of an embodiment of a system according to the invention in simplified schematic representations. Figure 8c shows a holding element 500 of the embodiment in isolation, and Figure 8b shows a positioning element 700 of the embodiment in isolation. Figure 8a shows the interaction between the positioning element 700 and the base module 1 on the one hand, and the fixing element 5 and the holding element 500 with the base module 1 on the other, 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 each actuating unit, and is guided between a respective positioning element 700 and a section of the base module 1 assigned to it. 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 that bridges all of the channels 50. Retaining webs 501 protrude vertically from the transverse web 503 of the holding element 500, each of which is provided with a latching projection 511, said latching projections 511 latching into corresponding latching recesses 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 Figures 5 to 7. 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 be advantageously 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 a corresponding holding section of the base module 1 or rests against it, wherein in the present case the holding section of the base module 1 is formed by its holding projection, on which, in the operating state,to its holding arms 52, the holding spring 5 engages.

[0087] The functionality of the positioning element 700 can be seen particularly advantageously from a view of Figures 8a and 8b. 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 advantageous 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.

[0088] Figure 9, comprising Figures 9a, 9b, and 9c, shows components of a further embodiment of a system according to the invention in simplified form in various schematic representations. Figures 9a and 9b each show the base module 1 and a functional module 2, which are included in the illustrated embodiment. Furthermore, Figures 9a and 9b show the lamination element 800, which is included in the present embodiment. The lamination element 800 has a

[0089] 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 9a and 9b. The laminating element 800 is shown separately in Figure 9c. From a combination of Figures 9a, 9b and 9c, 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 9b, 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 9c in conjunction with Figures 9a and 9b, the concealing 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 9, in the longitudinal direction X directly adjacent to the functional module 2 shown in Figure 9b, 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.Figure 9b further shows that, instead of a cover 4, a diaphragm 6 is provided in the functional module 2, which delimits lenses 8 arranged above an LED illuminant arranged in the receiving space of the functional module 2. For example, several functional modules 2, 20, 200 can be arranged one behind the other along the longitudinal direction X, as shown in Figure 1, with a respective concealing element 800 being arranged, as explained, at the transition between two adjacent functional modules and thus extending with one of its longitudinal sections along one of the two adjacent functional modules. Modular elongated luminaire.

[0090] List of reference symbols Basic module Functional module Retaining spring Fixing element Cover Actuating component Lens Coupling U-base U-leg Hole Positioning recess Channel Mounting projection Functional module Crosspiece Receptacle Transverse side area Corresponding fixing projection Electrical conductor Base section Spring leg First fixing projection Second fixing projection Channel 51 Flat top section

[0091] 52 Holding arm

[0092] 55 Positioning projection

[0093] 71 Actuating element

[0094] 72 Reset spring

[0095] 73 Fastening section

[0096] 92 mounting clamp

[0097] 100 electrical components

[0098] 121 retaining lug

[0099] 122 Inclined section

[0100] 171 Mounting nose

[0101] 200 functional module

[0102] 421 sharp-edged holding heel

[0103] 422 guide section

[0104] 500 mounting element

[0105] 501 Stop bridge

[0106] 502 clamping bar

[0107] 503 transverse crossbar

[0108] 511 locking projection

[0109] 520 mounting projection

[0110] 521 Limit projection

[0111] 700 positioning element

[0112] 701 Positioning element section

[0113] 702 Inclined section

[0114] 720 mounting projection

[0115] 721 vertical end section

[0116] 800 Laminating element

[0117] 802 holding area

[0118] 900 ceiling

[0119] X Longitudinal direction

[0120] Y transverse direction

[0121] 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, 20, 200) as modules, wherein at least one of the modules (1, 2, 20, 200) is elongated in a longitudinal direction (X), wherein, in an operating state of the system in which the luminaire is implemented, the modules (1, 2, 20, 200) are held together by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction (X), wherein, in the operating state, the base module (1) is arranged at least partially vertically above the functional module (2, 20, 200), 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 (71),wherein in the operating state, the retaining spring (4) is fixed to a first of the modules (1, 2, 20, 200) and bears vertically against a retaining projection provided on a second of the modules (1, 2, 20, 200) to fix the modules (1, 2, 20, 200) to one another, wherein the actuating element (71) is fixed to a specific one of the modules (1, 2, 20, 200), and wherein, starting from the operating state, the functional module (2, 20, 200) can be released from the base module (1) by actuating the actuating element (71) with deflection of the retaining spring (4) thereby realizing a release state, characterized in that the actuating element (71) is designed as a separate element from the retaining spring (4), Component is formed and the actuating unit comprises a return spring (72) which is connected to the actuating element (7, 8) at least during the movement of the actuating element (71) taking place between the operating state and the release state and which opposes the movement of the actuating element (71) taking place 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 (71) automatically returns, due to the return force, from its position in the release state relative to the specific module (1, 2, 20, 200) to which it is fixed, to its position in the operating state relative to the specific module (1, 2).

2. System according to claim 1, characterized in that the actuating element (71) is actuated by a relative movement of the functional module (2, 20, 200) relative to the base module (1), wherein in particular the retaining spring (4) in the operating state bears against the retaining projection in a first direction along the vertical direction (Z) with a positive fit, preventing a relative movement of the first module relative to the second module in the first direction in the operating state, wherein starting from the operating state, the first module is movable relative to the second module in a second direction opposite to the first direction along the vertical direction (Z), thereby actuating the actuating element (71) and deflecting the return spring (72), wherein in particular the actuating element (71) and / or the return spring (72) is spaced apart from the retaining projection of the second module and in particular from the retaining spring (4) in the operating state,and / or wherein the actuating element (71) acts on the retaining spring starting from the operating state for deflecting the retaining spring (4) in the first direction., 3. System according to one of the preceding claims, characterized in that the actuating element (71) is fixed to the specific module (1, 2, 20, 200) by a guide device which determines a mobility of the actuating element (71) relative to this module (1, 2, 20, 200), or that the actuating element (7) is fixed in a fixed position to the specific module.

4. System according to one of the preceding claims, characterized in that the actuating unit has a fixing element (5) which is fixed in position to the specific module (1, 2, 20, 200) in the operating state and in the release state and which, in particular together with the specific module (1, 2, 20, 200), forms a guide by means of which the actuating element (71) is guided during its movement between the operating state and the release state.

5. System according to one of the preceding claims, characterized in that the actuating unit has an actuating component (7) which comprises a holding section (70), the return spring (72) and the actuating element (71), wherein in particular the actuating component (7) is produced in one piece, in particular from plastic, in particular by means of an injection molding process, or that the return spring (72) is designed as a component separate from the actuating element (71) and counteracts the movement of the actuating element (71) occurring between the operating state and the release state by directly or indirectly bearing against the actuating element (71).

6. System according to claims 4 and 5, characterized in that the holding section (70) is arranged between the fixing element (5) and the specific module (1, 2, 20, 200) and is fixed to the specific module (1, 2, 20, 200) by means of the fixing element (5) and / or fastening sections are provided on the holding section (70). (73) are provided which, in the operating state and in the release state, interact with corresponding fastening sections (53) of the fixing element (5) to ensure a fixation between the fixing element (5) and the actuating component (7), wherein in particular the fastening sections (73) and corresponding fastening sections (53) are designed as locking devices corresponding to one another and ensure a locking as a fixation.

7. System according to one of claims 5 or 6, characterized in that the actuating component (7) with its holding section (70) is arranged on a section, in particular on an upper or a lower section, of the specific module (1, 2, 20, 200), in particular of the base module (1), and the actuating unit is arranged in sections spaced apart by a vertical distance from the section of the specific module (1, 2, 20, 200), wherein in particular at least a section of the actuating element (71) and at least one section of the return spring (72) is arranged at a distance from the section of the specific module (1, 2, 20, 200) by an associated vertical distance, wherein in particular the vertical distance by which the section of the actuating element (71) is spaced from the section of the specific module (1, 2, 20, 200) is a first value in the release state and a second value in the operating state which differs from the first value, wherein the return spring (72) has a first vertical extension length in the release state and a second vertical extension length in the operating state, wherein a difference between the first and second vertical extension lengths corresponds to a difference between the first and second values.

8. System according to one of the preceding claims, characterized in that the actuating element (71) or the return spring (72) is actuated by a particularly vertical relative movement relative to the Retaining spring (4) can be connected to this, in particular can be locked.

9. System according to claim 8, characterized in that the actuating element (71) is designed to correspond to the retaining spring (4) in such a way that, starting from the operating state, it can initially be connected to the retaining spring (4) and, in the course of its movement relative to the retaining spring (4) starting from the operating state until the release state is reached, causes an increasing deflection of the retaining spring (4) and the return spring (72), wherein in particular the actuating element (71) can be released again from the retaining spring (4) in the course of its movement relative to the retaining spring (4) starting from the operating state until the release state is reached.

10. System according to one of the preceding claims, characterized in that the functional module (2, 20, 200) is fastened to the base module (1) in the operating state by the spring unit in such a way that a vertical free space is formed between vertically opposite sections of the functional module (2, 20, 200) and the base module (1), wherein, starting from the operating state, the functional module (2, 20, 200) is movable relative to the base module by actuating the actuating element (71) to realize the deflection of the retaining spring (4) by the actuating element (71), wherein, in particular, to realize the release state, starting from the operating state, the functional module (2, 20,200) is to be moved firstly in a first direction along the vertical direction (Z) relative to the base module (1) while reducing the vertical clearance by connecting the actuating element (71) and / or the return spring (72) to the retaining spring (4) and then in a second direction opposite to the first direction along the vertical direction (Z) relative to the base module (1) by actuating the actuating element (71).

11. System according to one of the preceding claims, characterized in that the return spring (72) is directly or indirectly connected to the actuating element (71) during the movement of the actuating element (71) between the operating state and the release state in order to generate the return force.

12. 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 bears vertically against the retaining projection in the operating state, wherein the spring leg (42) has a guide section (422) corresponding to the actuating element (71), wherein, starting from the operating state, the guide section is connected to the actuating element (71) or slides on it in such a way that, starting from the operating state, the release state can be realized by a movement of the actuating element (71) relative to the two modules (1, 2), in that the movement of the actuating element (71) is necessarily accompanied by a corresponding movement of the spring leg (42) due to the connection or sliding between the guide section (422) and the actuating element (71).

13. System according to claim 12, characterized in that the actuating element (71) or the return spring (72) can be locked to the spring leg in the course of the movement of the actuating element (71) between the operating state and the release state upon reaching a defined deflection of the spring leg (42) in order to secure the defined deflection.

14. System according to one of claims 12 or 13, characterized in that, starting from the operating state, the actuating element (71) by a movement of the functional module (2, 20, 200) relative to the base module (1), the actuating element (71) can first be connected to the projection of the spring leg, and then, by a further movement of the functional module (2, 20, 200) relative to the base module (1) in a specific direction of movement, the actuating element (71) can initially be moved together with the projection of the spring leg due to the connection between them, in particular until the end of the movement of the actuating element (71) is reached, and then, by continuing the further movement in the specific direction of movement while increasing the deflection of the spring leg (42), the projection of the spring leg can be released from the actuating element (71), in particular by locking it with the return spring to the spring leg, wherein, in particular, the end of the movement of the actuating element (71) is defined by the retaining projection of the second module (1, 2, 20, 200),which limits the movement of the actuating element (71), and / or wherein, for releasing the projection from the actuating element (71), at least one of the projection and the actuating element (71) has an inclined surface pointing towards the other of the projection and the actuating element (71), wherein, in particular, the projection and the actuating element (71) overlap transversally to a lesser extent both in the operating state and in the released state and in each intermediate state reached between the operating state and the released state than the projection and the holding projection in the operating state and / or in at least one intermediate state reached between the operating state and the released state overlap transversally by at least 0.5 mm, in particular at least 1 mm, in particular at least 1.5 mm, and in particular less than 3 mm.

15. System according to one of the preceding claims, characterized in that the return spring (72) has a plurality of spring sections, each of which is connected in the operating state to a holding section (70) of the actuating unit or a holding section of one of the modules (1, 2) or a holding section of the holding spring (4), wherein in particular the retaining spring (4) has a plurality of projections and the second module (1, 2, 20, 200) has a plurality of retaining projections and in the operating state each of the projections bears vertically against a respective retaining projection assigned to it and the actuating unit has a plurality of actuating elements (71), wherein each of the spring sections is assigned to one of the actuating elements (71) and each of the actuating elements (71) is assigned to one of the projections.

16. System according to one of the preceding claims, characterized in that the functional module (2, 20, 200) has on its upper side a receptacle (23) which is delimited by two transverse side regions (24) of the functional module (2, 20, 200), 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) and in particular the actuating element (71) moves at least predominantly within the receptacle (23) during its movement carried out by it between the operating state and the release state relative to the retaining spring (4).

17. System according to one of the preceding claims, characterized in that the base module (1) and the functional module (2, 20, 200) 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, 20, 200) 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, 20, 200), 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, 20, 200), so that the U-leg (12) of the base module (1) are arranged between the U-shaped legs (12, 24) of the functional module (2, 20, 200), wherein in particular in the operating state the U-shaped base (21) of the functional module (2, 20, 200) is arranged vertically below the U-shaped base (11) of the base module (1) and an upper side of the U-shaped base (11) of the base module (1) points vertically away from the U-shaped base (21) of the functional module (2, 20, 200), wherein in particular the system comprises electrical supply lines (3) which in the operating state are arranged exclusively between the U-shaped bases (11, 21) of the base module (1) and the functional module (2, 20, 200) and run in the longitudinal direction, wherein in particular the U-shaped legs (12) of the base module (1) form a retaining lug (121) of the base module (1), to which in the operating state the Actuating unit, in particular the fixing element (5), bears vertically against it, and / or that the U-legs (12) of the functional module (2, 20, 200) form a retaining lug (121) of the functional module (2, 20, 200),in the operating state, the retaining spring (4) presses vertically against it.

18. 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 first module (1, 2, 20, 200) 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 first module (1, 2, 20,200) leads to an increase in the second vertical pressing force or to the contact of the second fixing projection (44) with the corresponding fixing projection (25) to generate a second vertical pressing force between the second fixing projection (44) and the corresponding fixing projection (25), wherein, in particular, the spring unit has 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 (X).

19. 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.

20. System according to one of the preceding claims, characterized in that, starting from the operating state, the release state can be realized by means of movement of the actuating element (71) and, starting from the release state, the functional module (2, 20, 200) can be detached and removed from the base module (1) to realize a separated state of the system, wherein, starting from the separated state of the system, the operating state can be realized without movement of the actuating element.

21. 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 second module (1, 2, 20, 200).

22. 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 several transversely arranged channels (50) next to one another or a transversely continuous channel, wherein the system comprises several electrical conductors which are arranged in the holding space, in particular in each case in one of the channels (50) or jointly in the one transversely continuous channel, arranged and held therein, 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), as well as 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), and / or 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 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).

23. A method for realizing a separated state of a luminaire starting from an operating state of the luminaire, wherein the luminaire has a fastening device which comprises a spring unit and an actuating unit, wherein the spring unit comprises a retaining spring (4) and the actuating unit comprises an actuating element (711), and which has at least two modules (1, 2, 20, 200), of which at least one is designed as a base module (1) and at least one other as a functional module (2, 20, 200), wherein at least one of the modules (1, 2, 20, 200) is designed to be elongated in a longitudinal direction (X), wherein in an operating state of the luminaire, the modules (1, 2, 20, 200) are held to one another by the fastening device and together enclose an interior of the luminaire perpendicular to the longitudinal direction, wherein the base module (1) is at least partially vertically above the functional module (2, 20,200) and the retaining spring (4) is fixed to a first of the modules (1, 2, 20, 200) and rests vertically on a retaining projection provided on a second of the modules (1, 2, 20, 200) while fixing the, Modules (1, 2, 20, 200) to one another, wherein the actuating element (71) is fixed to a specific one of the modules (1, 2, 20, 200), wherein in the separated state of the lamp, the base module (1) is separated from the functional module (2, 20, 200), characterized in that the actuating element (711), in particular by moving the specific module (1, 2, 20, 200), is moved relative to the retaining spring (4) and thereby the retaining spring (4) is deflected, wherein by this movement of the actuating element (71), a return spring (72) directly or indirectly connected to the actuating element (71) during the movement is deflected in such a way that the return spring (72) is locked to the retaining spring (4) or after the functional module (2, 20, 200) has been released from the base module (1) the actuating element (71) returns to its position in the operating state relative to the specific module (1, 2, 20, 200),wherein, in particular, subsequently starting from the separated state, the operating state is again realized by moving the functional module (2, 20, 200) relative to the base module (1) without moving the actuating element (71).

Images