Long-life lighting strip

Abstract

The invention relates to a system for realising a luminaire (100) elongated in a longitudinal direction X, the system comprising a plurality of support rails (1, 10) and a coupling (2), wherein insertion of the coupling (2) into two support rails (1, 10) allows an operating state of the system to be achieved in which the support rails (1, 10) are fixed relative to one another by means of the coupling (2), wherein the system also comprises a plurality of current-conducting rails (3) which have channels in each of which a conductor wire (4) is arranged, wherein, in the operating state, an electrical connector (5) is fixed to the coupling (2) or to the first support rail (1), the electrical connector having a first connection side connected to the conductor wires (4) arranged in the first current-conducting rail (3), and a second connection side connected to the conductor wires (4) arranged in the second current-conducting rail (3), wherein the electrical connector (5) has a plurality of connection devices which each have a spring contact on each connection side, wherein the spring contacts each comprise a metal body against which, in the operating state, the conductor wire (4) received by the spring contact rests, wherein an electrically conductive lubricant (56) is provided between a contact surface (54) of the metal body and the conductor wire (4).

Description

[0001] Durable light strip

[0002] The invention relates to a system for realizing a luminaire elongated in a longitudinal direction and to a luminaire realized by means of such a system and to a method for realizing a luminaire component or an arrangement of luminaire components or a luminaire.

[0003] Generic systems are designed to implement a generic luminaire that is elongated in a longitudinal direction and usually comprises several longitudinally elongated support rails. Typically, the support rails are used to fix the luminaire to a building structure, for example, to a ceiling. The support rails represent a type of basic framework for the luminaire and are designed to accommodate supply lines and preferably to accommodate mounting bodies to which lamps or other electrical functional elements are attached. Thus, an infrastructure for the luminaire is provided via the support rails. Electrical functional elements of the luminaire are usually attached to the mounting bodies, for example lamps, in particular comprising circuit boards with LEDs, radio modules, electrical cables and / or operating devices.When mounting the luminaire, the respective support rail is usually first attached to the building structure and then the mounting body, which is equipped with at least one of the aforementioned electrical functional elements of the luminaire, is fixed to the support rail so that the support rail and mounting body enclose an interior space in which essential elements of the luminaire are arranged, for example circuit boards, operating devices, contact devices, etc. Typically, the support rail and mounting body are each elongated in a longitudinal direction; the longitudinal extent is preferably at least five times the extent perpendicular to the longitudinal direction. The support rail usually has a U-shaped cross-section perpendicular to the longitudinal direction, which cross-section extends in a vertical direction and in a transverse direction and is open at one vertical end and is formed by a support rail base and two support rail side walls.The support rail side walls thus run vertically away from the support rail base, and the support rail base connects the transversely spaced support rail side walls, and opposite the support rail base the support rail has an open side. Depending on requirements the support rail base and support rail side walls can have contours or recesses or indentations. The support rail base and the support rail side walls usually together form a support rail interior that is at least partially enclosed by the support rail side walls and the support rail base. The support rail interior is thus defined by the support rail. Usually all support rails in a system have the features described here.A generic system frequently has at least a first and a second support rail which are connected to one another at their mutually facing longitudinal ends to form the luminaire. They usually form a common interior space which extends elongated between the support rail side walls of both support rails and the support rail base of both support rails along the longitudinal extent of both elongated support rails. The two support rails are usually fixed to one another by means of a coupling which has a U-shaped cross-section formed by a coupling base and two coupling side walls. The coupling side walls thus run vertically away from the coupling base, and the support rail base connects the transversely spaced-apart coupling side walls.

[0004] The U-shaped cross-section of the coupling is preferably open at its end opposite the coupling base. Typically, each of the support rails has a substantially constant cross-section perpendicular to the longitudinal direction, wherein the cross-section is preferably identical except for recesses and / or punchings in the support rail base and / or support rail side walls. Frequently, the cross-section of all support rails is substantially the same. Typically, the support rails are fixed relative to one another by the coupling perpendicular to the longitudinal direction and, in particular, also to one another in the longitudinal direction by means of the coupling. In an operating state of the system in which the first and second support rails are fixed to one another, the coupling is typically arranged in the two support rails in such a way that the coupling base runs along both support rail bases and each of the coupling side walls rests against a respective one of the support rail side walls assigned to it.

[0005] The support rail is usually fastened to the building structure via its support rail base. The mounting body is usually arranged on the open side of the support rail so that the mounting body vertically delimits the support rail interior defined by the support rail and the mounting body, together with the support rail on which it is arranged, encloses an interior space perpendicular to the longitudinal direction. At least in some longitudinal sections, the enclosure of the interior space formed by the support rail and mounting body can be interrupted, for example to allow access to the interior space, for example for air supply. The interior space is preferably enclosed continuously over at least 80%, in particular at least 90% of its longitudinal extent, in particular over its longitudinal extent.The mounting body often has a cross-section perpendicular to the longitudinal direction, comprising a mounting body base extending in the transverse direction and, on both transverse sides of the mounting base, mounting body side walls extending vertically away from the mounting body base. The support rail and mounting body are typically manufactured separately. The support rail and / or mounting body are generally preferred and usually each manufactured from a sheet metal by forming. Typically, in an operating state of the system in which the system is used as intended, the mounting body is held by a retaining spring on support rail retaining anchors of the support rail. Various possibilities for implementing such a retaining spring are known in the prior art.Typically, the retaining spring is firmly connected to the mounting body and has elastically deflectable retaining projections in the transverse direction. The transverse direction, when referring to the mounting body, refers to the operating state of the system. The support rail retaining anchors are preferably designed as projections.

[0006] To implement a generic luminaire, supply lines are usually provided which are arranged in the interior of the support rails and are supplied by the lamps and / or other electrical functional elements arranged on the mounting bodies of the luminaire. A generic system generally preferably comprises a current conducting rail, which is usually made of plastic, in particular by means of an extrusion process or injection molding process, and which is also elongated in the longitudinal direction, i.e. has an elongated longitudinal extension between its two longitudinal ends. The current conducting rail is usually arranged on an inner side of the support rail facing the interior and is fixed to the support rail, in particular to the support rail base and / or to at least one of the support rail side walls.The current conducting rail extends over a significant portion of the length of the support rail, in particular over at least 80% of the longitudinal extent of the support rail. Typically, the current conducting rail has a plurality of channels arranged next to one another along an alignment direction, which channels are open to an access side that is accessible from the interior. In the operating state, the current conducting rail is fixed to the support rail in such a way that the alignment direction runs perpendicular to the longitudinal direction. In one embodiment, the alignment direction runs parallel to the transverse direction in the operating state of the system. The channels preferably extend continuously over the entire length of the current conducting rail. In particular, the transverse direction, the longitudinal direction and the vertical direction run perpendicular to one another.At least one conductor wire is arranged in each of at least some of the channels, in particular exactly one conductor wire or exactly two conductor wires, which are held spaced apart from one another in the respective channel. At at least one longitudinal end of the conductor rail, the conductor wires are typically connected to an external voltage source, via which electrical energy, in particular at least partially in the form of electrical signals, can be applied to the conductor wires. The conductor wires can thus serve as supply lines in the support rails.For this purpose, an electrical connector is usually arranged at the longitudinal end, which is electrically connected to the conductor wires and via which the conductor wires are supplied with electrical energy, and / or a feed device is provided, which is arranged on an access side of the conductor rail oriented along the vertical direction or along the transverse direction, is connected to the conductor wires, and which itself is or can be supplied with energy from an external energy source. Such a feed device often has a fastening device and, on a contact side, feed contacts, which are arranged in an operating state or, in the case of a realized luminaire, for feeding energy into the conductor wires in at least some of the channels of the conductor rail and contact the conductor wire arranged therein.The feed contacts are typically arranged side by side in the same alignment direction as the conductor wires and the contacts of a contact device (explained in more detail elsewhere). Usually, an electrical connector is provided at each longitudinal end of the busbar. The electrical connectors can, for example, be designed as corresponding connectors, for example, a first as a plug to a second as a socket. By providing at least one connector at at least one longitudinal end of the busbar, adjacent busbars in the longitudinal direction can be electrically connected to one another, so that the conductor wires can form a through-wiring.

[0007] In typical embodiments, the system also frequently includes a contact device, via which electrical contact is established between the conductor wires assigned to the busbar and at least one electrical functional element of the mounting body. The contact device is typically fixed to the mounting body and ensures an electrical connection of the at least one electrical functional element when the mounting body is held in the operating state of the system or in its intended position on the support rail in which the luminaire is implemented. The contact device is designed to engage in the channels from the access side of the support rail to contact the conductor wires.For this purpose, the contact device comprises a plurality of contact units arranged side by side in an arrangement direction, wherein, in the operating state of the system, each of the contact units is in electrically conductive contact with one of the conductor wires arranged in the channels of the conductor rail. In the operating state, the arrangement direction, which is defined with reference to the contact device, is arranged parallel to the alignment direction, which is defined with reference to the conductor rail.To contact the conductor wires, the contact device is arranged with its contact side on the access side of the conductor rail. The contact units for contacting the conductor wires are inserted into the channels along a plug-in direction defined for the contact device, resulting from the arrangement of the contact units. The plug-in direction is usually perpendicular to the arrangement direction and, accordingly, perpendicular to the alignment direction for the implementation of the operating state. The contact units each have a contact with which they make electrically conductive contact with one of the conductor wires in the operating state.

[0008] Generic systems are used in a wide range of applications, for example in warehouses, production halls, supermarkets, or open-plan offices, where luminaires with a plurality of support rails and mounting elements are used. The basic principle of luminaires manufactured with a generic system is that the support rails form the electrical and mechanical infrastructure of these luminaires, whereas the mounting elements are attached to the support rails and contain the electrical functional elements required in the respective application. Of course, at least some of the electrical functional elements are usually designed as lighting modules with light sources, in particular comprising LED boards.For example, alternatively or additionally, further electrical functional elements can be provided on the respective mounting body, such as a presence sensor (e.g. infrared sensor), a camera, a radio module, etc. The electrical functional elements are usually fixed to the mounting body.

[0009] In typical applications, systems of this type are used in such a way that a plurality of luminaire components, each of which comprises a support rail designed as explained, are arranged one behind the other in the longitudinal direction and connected to one another. Further components of the respective luminaire component can be arranged on or in the support rails of the luminaire components. For example, lamps and supply lines can be attached to the support rails, for example directly to the support rails, for example by providing a mounting body designed as explained above and / or a current conducting rail designed as explained above. For example, each luminaire component can comprise a support rail, a current conducting rail and a mounting body and in particular a coupling attached to the support rail.The luminaire components are arranged one behind the other in the longitudinal direction, whereby the support rails of the respective luminaire components are mechanically connected to one another by means of the coupling and the supply lines which run in the support rails, in particular those in the current conducting rails.

[0010] The lead wires arranged in the luminaire components are each electrically connected to one another in pairs, i.e. one lead wire of the first luminaire component is connected to one lead wire of the second luminaire component. This makes it possible to create very elongated luminaires, as is required in a large number of applications. In particular, the current guide rails of two adjacent luminaire components, the support rails of which are mechanically fixed to one another by a coupling, can be connected to one another by an electrical connector which connects the lead wires arranged in the two current guide rails in pairs. In particular, the position of the current guide rails and the electrical connector is fixed to one another by the coupling determining the position of the support rails of the luminaire components relative to one another.A luminaire of the respective system thus comprises a plurality of support rails and in particular a plurality of mounting bodies and / or current guide rails or a plurality of luminaire components, which are each connected to one another as explained.

[0011] Since these types of luminaires are typically quite long, often exceeding 5 m, 10 m, 20 m, or even more than 50 m, a system specifically designed for this type of luminaire requires connecting a number of support rails together. Typically, the support rails are delivered with one longitudinal section of the coupling positioned within the respective support rail and another longitudinal section extending from the support rail. This coupling is then inserted into another support rail to secure the two support rails together.To install the electrical functional elements, in particular the lighting devices, the contact devices are then arranged with their contact sides within the interior of the support rail on the access side of the current conducting rail so that the functional element connected to the respective contact device can be electrically connected to at least some of the conducting wires by means of the contact device. Contacting of the conducting wires by the contact device is often carried out in such a way that a mounting body with a pre-mounted contact device is arranged at the open end of the support rail and the contact units of the contact device are inserted into the channels of the current conducting rail, while the contact device is fixed to the mounting body.The contact units are often inserted into the channels for the conducting wires during and as a result of the same movement of the mounting body relative to the support rail with which the mounting body is arranged and fastened to the open end of the support rail in order to close the open side of the support rail. Since a current conducting rail of a generic system typically has a large number of channels arranged next to one another in the direction of arrangement, typically at least ten, preferably at least thirteen, it is not easy to ensure correct contact between the conducting wires arranged in the channels. It must be taken into account that the current conducting rail with all of its channels usually extends over a limited area in the direction of arrangement, so that the current conducting rail, and thus a luminaire manufactured using the system, does not have to be overly large.In most cases the total length of the current conducting rail in the direction of arrangement is less than 20 cm, in particular less than 15 cm. In most cases the channel walls which separate the clear cross sections of two adjacent channels of the current conducting rail have a channel wall thickness of less than 5 mm, in particular less than 4 mm, in particular less than 3 mm. The contact device and its contact units must therefore be carefully aligned relative to the current conducting rail so that their contact units can reach the channels provided for them. In addition, incorrect insertion of the contact device onto the current conducting rail should be prevented wherever possible by arranging the contact device on the current conducting rail rotated by 180° compared to its intended alignment relative to the current conducting rail.It should be noted that each of the conductor wires arranged in the channels of the conductor rail is usually assigned a specific function, for example the function as a data conductor, neutral conductor, phase conductor or PE conductor, so that correct positioning of the contact device relative to the conductor rail or correct contacting of the contact units on the conductor wires provided for them is necessary for the correct functioning of a luminaire and also in terms of safety aspects.

[0012] In the typical use of a generic system for the realization of elongated luminaires comprising several luminaire components, each comprising a conductor rail and a support rail, the transition between two adjacent luminaire components has proven to be particularly critical. While such a use of generic systems ensures reliable fixing of the two support rails to one another by providing a coupling connecting two adjacent support rails, and through-plating between the lead wires of the two adjacent luminaire components is ensured by the electrical connector provided on the coupling, stresses nevertheless arise in various ways due to the considerable length of the luminaire components, and in particular in a luminaire realized by a large number of luminaire components arranged one behind the other.For example, considerable mechanical forces can act on two luminaire components arranged one behind the other, for example due to building vibrations and / or during cleaning. In addition, due to the considerable length, thermal stresses can occur between components due to different thermal expansion properties of the various components of the system. For example, the support rail, the current conducting rail arranged therein, and the conductor wires arranged therein are typically made of different materials with different thermal expansion properties, which can lead to relative movement and / or stresses between the various components. This leads in particular to problems with through-plating, i.e. connecting conductor wires of adjacent current conducting rails or adjacent luminaire components via the electrical connector.If such stresses or relative movements occur, the electrical conductivity of the electrical connection between the conductor wires of the two adjacent conductor rails or luminaire components can easily be impaired. Various approaches to counteracting these problems are known in the prior art. For example, it is known to provide a complex geometry of the coupling and support rails through which the highest possible rigidity of the connection between the support rails can be achieved, as well as to define the position of the conductor rails as precisely as possible at the two longitudinal ends of each luminaire component, i.e. at the two longitudinal ends of the respective support rail relative to the support rail. However, this entails complex and costly measures.For example, in such cases, the conductor rail, whose longitudinal ends are fixed with particular precision relative to the support rail, must be designed to be variable in length to compensate for the different thermal expansion behavior, while still ensuring precise and insulated routing of the conductor wires relative to the support rail. Furthermore, the increased complexity of the coupling and support rail geometry complicates the assembly process—i.e., the assembly of two adjacent luminaire components. Other approaches, such as designing the electrical connector with contacts that can move longitudinally relative to each other, are error-prone and / or costly.

[0013] The present invention is based on the object of providing a system for realising a lamp elongated in a longitudinal direction, an elongated lamp and / or a method for

[0014] To provide a means for realizing a longitudinally elongated luminaire or for realizing an arrangement of luminaire components which at least partially eliminates at least one disadvantage of generic systems, luminaires and / or methods.

[0015] 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 plurality of longitudinally elongated support rails and a coupling provided for connecting two of the support rails. Each of the support rails has a guide for the coupling, wherein in particular the guide is formed at least partially by the support rail side walls of the respective support rail. The coupling extends along the longitudinal direction from a first longitudinal end to a second longitudinal end, such that its longitudinal extension length is defined by the distance between the first and second longitudinal ends. Accordingly, each of the support rails has a first longitudinal end and a second longitudinal end, such that its respective longitudinal extension length is defined by the distance between the first and second longitudinal ends.The coupling is designed to connect a first of the support rails to a second of the support rails in an operating state of the system. Preferably, each of the support rails of the system referred to here has a cross-section corresponding to the coupling, so that the first and second support rails can be selected at will from the plurality of support rails. The operating state refers to a defined arrangement of the respectively specified components of the system relative to one another.By inserting a first longitudinal section of the coupling, which comprises the first longitudinal end of the coupling, into a first longitudinal end section of the guide of the first support rail, which comprises the first longitudinal end of the support rail, and by inserting a second longitudinal section of the coupling, which comprises the second longitudinal end of the coupling, into a second longitudinal end section of the guide of the second support rail, which comprises the second longitudinal end of the support rail, the operating state of the system can be realized in which the first and second support rails are fixed relative to one another by the coupling.In the operating state, the coupling preferably rests with an upper and a lower end of its longitudinal section on a respective vertical guide section of the first longitudinal end section of the guide of the first support rail, and with an upper and a lower end of its second longitudinal section on a respective vertical guide section of the second longitudinal end section of the guide of the second support rail. The guide of the respective support rail naturally preferably has a plurality of vertical guide sections, at least one upper and one lower vertical guide section, wherein the coupling, in the operating state, is arranged with its respective longitudinal section between the upper and lower vertical guide sections of the guide of the respective support rail in such a way that it rests with an upper end of the longitudinal section on the upper vertical guide section and with a lower end on the lower vertical guide section.As a result, the respective longitudinal section of the coupling is fixed in its position relative to the respective support rail with respect to the vertical direction. The vertical guide sections or the upper and lower ends of the longitudinal section can of course each comprise subsections that can be spaced from one another, for example, in the transverse direction and / or longitudinal direction. It is preferred that the vertical position of this longitudinal section of the coupling, and thus of the coupling as a whole, relative to the respective support rail is fixed by the upper and lower ends of the longitudinal section of the coupling each abutting a vertical guide section of the respective longitudinal end section of the respective support rail.For particularly advantageous fixing of the support rails, the coupling, in particular at least one of the coupling side walls, preferably has a transverse coupling projection extending within the second longitudinal section, which is spaced from the second longitudinal end and which, in the operating state, presses transversely against a transverse guide section of the second longitudinal end section of the guide of the second support rail, producing a transverse compression of the coupling relative to the second support rail, in particular between the support rail side walls of the second support rail. The system according to the invention further comprises a plurality of longitudinally elongated current conducting rails which have longitudinally elongated channels arranged side by side in an alignment direction running perpendicular to the longitudinal direction and which are open on an access side of the current conducting rail. The alignment direction preferably runs along the transverse direction.At least one longitudinally elongated conductor wire is arranged in each channel. In the operating state, a first of the current conducting rails is arranged in the first support rail and a second of the current conducting rails is arranged in the second support rail, and an electrical connector included in the system is fixed to the coupling or to the first support rail. The electrical connector has a plurality of connecting devices arranged next to one another along the direction of alignment. The electrical connector has a first and a second connection side, each of the connecting devices having a spring contact on each connection side and thus forming a spring contact on the respective connection side. The spring contacts thus each form a section of the respective connection side on which they are provided.In the operating state, the electrical connector connects one of the conductor wires arranged in the first conductor rail to one of the conductor wires arranged in the second conductor rail. For this purpose, in the operating state, the electrical connector is connected with its first connection side to the conductor wires arranged in the first conductor rail and with its second connection side to the conductor wires arranged in the second conductor rail, wherein each of the conductor wires is arranged in a respective spring contact assigned to it of one of the connecting devices.By arranging one of the conductor wires arranged in the first busbar on a first spring contact of a specific connecting device provided on the first connection side of the electrical connector, and by arranging one of the conductor wires arranged in the second busbar on a second spring contact of the specific connecting unit provided on the second connection side, the two conductor wires are electrically connected to one another by the specific connection device. On at least one of the connection sides, the spring contacts each comprise a metal body against which the conductor wire received by the spring contact rests in the operating state.For example, all spring contacts provided on the first connection side can each comprise such a metal body and / or the spring contacts provided on the second connection side can each comprise such a metal body. The metal body has a support surface on which an electrically conductive lubricant is provided. In the operating state, the electrically conductive lubricant is arranged between the support surface of the metal body and the associated conductor wire, which in the operating state is received in the spring contact comprising the respective metal body.

[0016] The inventors have surprisingly discovered that by providing an electrically conductive lubricant on the contact surface of the metal body of the respective spring contact, negative effects that usually occur due to the stresses or relative movements explained can be counteracted in a surprisingly simple manner. The inventors have thus departed from the usual procedure for systems of this type. Since in systems of this type the lead wires and spring contacts usually have considerable dimensions and their position relative to one another is fixed by the system components in such a way that any possible friction between lead wires and spring contacts is negligible in the context of the overall system, it is not usually considered to provide a lubricant for lubricating contact surfaces between the spring contact and lead wire. The lead wires usually have a lead cross-section oran extension length along the alignment direction of at least 1.5 mm, in particular at least 2 mm, and the lead wires are usually accommodated in the respective spring contact over a longitudinal extension length of more than 5 mm, in particular more than 7 mm, in particular more than 10 mm in the operating state at a temperature of 20 °C and are in contact with it over such a longitudinal extension length. Although the components of the system fundamentally offer a wide range of design options for avoiding and / or counteracting the aforementioned relative movement ortension and an electrically conductive lubricant is already expensive in itself and, in addition, its application to the support of the metal body is associated with a complicated manufacturing process and thus increased manufacturing costs and there is no reason for the provision of such an electrically conductive lubricant in the context of the prior art, the inventors have surprisingly found, on the basis of tests carried out, that the provision of such a lubricant according to the invention brings with it advantages to such an extent that, due to the increased longevity of a luminaire realized by means of the system and the simplified realization of the components of the luminaire, the provision of such a lubricant is economically and technically advantageous.In general, it is obvious to those skilled in the art that a conventional electrically conductive lubricant practically does not increase the resistance between the spring contact and the lead wire. It has generally been found preferable to apply the lubricant over a portion of the contact surface of the metal body such that, in the operating state, it extends over a surface area of ​​at least 4 mm. 2 , in particular at least 5 mm 2 , in particular at least 6 mm 2 The lubricant extends beyond the contact surface between the conductor wire received by the respective spring contact and the contact surface of the metal body. It has also been found to be generally advantageous for the lubricant, in the operating state, to have a thickness of less than 0.3 mm, in particular less than 0.1 mm, extending perpendicular to the longitudinal direction between the contact surface and the conductor wire.

[0017] In one embodiment, the conducting wire has two sides pointing away from one another in a direction running perpendicular to the longitudinal direction. When the conducting wire is viewed in a specific direction along this direction, only one of these sides of the conducting wire is visible; when viewed in the direction opposite to the specific direction along this direction, only the other of the two sides is visible. The two sides can merge directly into one another or be connected to one another by a section of the conducting wire that runs parallel to the stated direction. This section is not visible when the conducting wire is viewed in the stated specific direction or the direction opposite to this direction. The two sides pointing away from one another naturally form a different end of the conducting wire along the stated direction.In one embodiment, the lubricant is provided on only one of the two sides in the operating state. In one embodiment, the bearing surface of the metal body is provided on only one of these two sides in the operating state. The inventors have recognized that by providing the bearing surface on only one side or by providing the lubricant on only one side of the conducting wire between the bearing surface and the conducting wire, a sufficient sliding effect can be provided in a particularly simple manner. This is based on the idea that the application of the lubricant to the metal body in such a way that it is arranged on only one side of the conducting wire in the operating state or is located on the bearing surface, which itself is arranged on only one of the two sides of the conducting wire, the application of the lubricant can be made particularly easy and, moreover, the amount of lubricant used can be kept low.In general, the conducting wire preferably rests on the spring contact assigned to it exclusively via a contact surface formed by the conducting wire in the operating state, wherein in the operating state at least 50%, in particular at least 70%, in particular at least 80% of this contact surface rests indirectly on the bearing surface of the metal body via electrically conductive lubricant provided on it. This can be ensured, for example, by the bearing surface being arranged on only one side of the conducting wire in the operating state, the conducting wire being guided in the spring contact in such a way that one side of it is pressed against the bearing surface from the other side only via small pressing zones adjoining it. In general, the said direction preferably runs parallel to the vertical direction since, in the context of a preferred system, sufficient installation space is available so that the two sides of the conducting wire form the upper and lower contact surfaces.lower side of the conducting wire. Preferably, the metal body comprises a base body and a spring body connected to the base body, wherein in particular at least 50%, in particular at least 70%, in particular at least 80%, in particular at least 90% of the portion of the contact surface which is pressed against the base body by the spring contact bears indirectly, via electrically conductive lubricant provided thereon, against the bearing surface of the metal body formed by the base body.

[0018] In one embodiment, the metal body has a base body and a spring body connected to the base body. The base body forms the support surface, and the spring body spans the support surface. In the operating state, the conductor wire assigned to the respective spring contact rests on the support surface of the base body of the respective spring contact and is pressed against the support surface by the spring body. The spanning of the support surface by the spring body thus serves to enable the spring body, in the operating state, to exert a spring force, in particular perpendicular to the longitudinal direction, in particular along the vertical direction, on the conductor wire towards the support surface. The spring body can, for example, be supported on a connector housing of the electrical connector and / or on the base body. Preferably, the lubricant is arranged at least predominantly, in particular exclusively, on the support surface.The lubricant is therefore arranged at most to a small extent at points that extend outside the contact surface. The metal body preferably rests on the conducting wire assigned to it, which in the operating state is received by the spring contact that comprises the metal body, exclusively with a contact surface, wherein the contact surface forms at least 70%, in particular at least 80%, in particular at least 90% of the contact surface. The contact surface thus defines the entire surface over which the metal body rests on the conducting wire in the operating state. The contact surface preferably takes up a correspondingly predominant proportion of the contact surface. Generally speaking, the electrical conductivity of the base body is more than 20 times, in particular more than 30 times the electrical conductivity of the spring body.

[0019] In one embodiment, the support surface has a U-shaped cross-section perpendicular to the longitudinal direction, at least in its longitudinal section, wherein, in the operating state, the associated conductor wire is arranged within the U-shaped cross-section. By designing the support surface in the manner of a U, the conductor wire can be guided particularly advantageously in the support surface and, moreover, reliable absorption of the lubricant by the support surface is ensured even during the application of the lubricant.

[0020] In one embodiment, the support surface is at least partially formed by a cam of the metal body. Preferably, as explained, the metal body comprises a base body and a spring body connected to the base body, wherein the base body forms the cam. Preferably, the at least one cam protrudes perpendicular to the longitudinal direction, in particular in the vertical direction.Generally, the spring body is preferably spaced from the base body at least over a longitudinal section in a direction perpendicular to the longitudinal direction, in particular along the vertical direction, wherein the conducting wire is arranged within this longitudinal section in the operating state and the spring contact presses against the conducting wire within the longitudinal section in this direction and thus against the base body by means of the conducting wire, so that the conducting wire is held pressed between the base body and the spring contact, wherein the cam is designed in the manner of a projection extending in this direction. The cam is preferably arranged within said longitudinal section. By providing such a cam, a particularly high contact force and thus a particularly low-resistance electrical contact can be realized between the conducting wire and the part of the support surface formed by the cam.Accordingly, the cam preferably forms part of the contact surface via which the metal body rests against the conducting wire in the operating state. In one embodiment, the conducting wire rests against the cam in the operating state over a contact length extending in the longitudinal direction, wherein the contact length is preferably less than 30%, in particular less than 20%, in particular less than 10%, in particular less than 5%, in particular less than 1% of the longitudinal extension length of the conducting wire over which it is arranged in the spring contact in the operating state and thus overlaps with the spring contact. In one embodiment, the conducting wire runs obliquely to the longitudinal direction within the longitudinal extension length of the spring contact in the operating state and rests with one section against the cam and with another section, which is spaced apart from the one section in the longitudinal direction, against a section of the support surface spaced apart from the cam.In one embodiment, the support surface is formed at least partially, in particular at least predominantly, by at least two cams of the metal body which protrude in a same direction running perpendicular to the longitudinal direction and are spaced apart from one another in the longitudinal direction. This makes it possible to provide the straightest possible guidance of the conductor wire and a sufficiently large proportion of the contact surface of the conductor wire, over which the conductor wire bears against the support surface, in particular against the contact surface of the metal body, with low contact resistance. Preferably, the contact surface is formed at least partially by at least two cams of the metal body which protrude in a same direction running perpendicular to the longitudinal direction, wherein the spring body, in the operating state, presses against the conductor wire at a point, in particular exclusively at a point, which lies between the two cams in the longitudinal direction.In embodiments in which two or more cams are provided, the properties explained here for a cam can be present with reference to each of the cams. In one embodiment, the metal body, in particular the bearing surface of the metal body, has a U-shaped cross-section at least over a longitudinal section of the metal body, wherein the at least one cam is designed in the manner of a projection projecting or protruding from the U-base of the U-shaped cross-section and connecting the U-legs of the U-shaped cross-section to one another. Due to the design of the metal body orthe support surface with a U-shaped cross-section, the conductor wire can be guided particularly advantageously on the support surface, wherein by providing the cam as a projection provided within the U-shaped cross-section, which extends away from the U-base and connects the U-legs to one another, the described advantageous properties of the cam can be used at the same time. Particularly preferably, the cam extends less far from the U-base than the U-legs. Preferably, the U-legs run in the aforementioned direction perpendicular to the longitudinal direction, and preferably the U-base likewise runs perpendicular to the longitudinal direction, but also perpendicular to the aforementioned direction. In one embodiment, the base body has an insertion bevel at a longitudinal end designated for the respective connection side, which opens into the support surface.It should be noted that in the preferred embodiment the base body of each spring contact has an insertion bevel which points towards the connection side on which the spring contact is provided. By providing the insertion bevel, the most friction-free and least-destructive connection of two lighting components or the electrical connection of two busbars by means of an electrical connector can be achieved particularly advantageously. In one embodiment the spring body is designed like a cage which is locked in place with the base body. By designing the spring body as a cage the spring body can be realized particularly cost-effectively. By locking the spring body in place the spring body can be fixed in place relative to the base body in a particularly simple manner.By designing it as a cage, the spring contact can be manufactured in a material-saving and simple manner so that, on the one hand, it generates a sufficient spring force on the conducting wire towards the contact surface in the operating state and, on the other hand, it only rests on the conducting wire with a small area, so that a significant portion of the current flowing from the conducting wire into the connecting device flows away via the base body, so that the provision of the lubricant between the contact surface of the base body and the conducting wire can ensure a consistently low-resistance electrically conductive connection between the spring contact and the conducting wire.Preferably, in the operating state, the spring body rests exclusively on the conducting wire with a contact surface that amounts to less than 70%, in particular less than 50%, in particular less than 30%, in particular less than 20%, in particular less than 10% of the contact surface of the base body with which the base body rests exclusively on the conducting wire in the operating state. When defining the operating state, a temperature of 20°C is generally used.

[0021] In one embodiment, the spring contacts on the first and second connection sides of each connecting device each have a base body and a spring body, wherein the base bodies of the two spring contacts of the connecting device are formed by a common, bar-shaped, electrically conductive body. By forming the base bodies of the two spring contacts by a common, bar-shaped, electrically conductive body, a particularly low-resistance connection between the two spring contacts of the connecting device can be provided and, moreover, the greatest possible robustness can be ensured. Furthermore, the bar-shaped body can be suitable for contacting the connecting device, for example, via a light tap for supplying a light source or other electrical functional element.

[0022] In one embodiment, the lubricant is applied to the support surface of each metal body in a plurality of droplets spaced apart from one another in the longitudinal direction. Preferably, the lubricant is applied to the support surface in at least three, in particular at least four such droplets spaced apart from one another in the longitudinal direction. This allows, on the one hand, the lubricant to be applied over a sufficient longitudinal extent, and on the other hand, the lubricant can be applied particularly easily and in low doses. Preferably, the droplets have a longitudinal extent of less than 3 mm, in particular less than 2 mm. More preferably, the droplets have a transverse extent of less than 3 mm, in particular less than 2 mm. More preferably, the droplets have a vertical extent of less than 3 mm, in particular less than 2 mm.In one embodiment, the electrically conductive lubricant applied to the support surface of each metal body has a mass of at least 1 mg and at most 10 mg, in particular between 1 mg and 7 mg, in particular between 1 mg and 3 mg.

[0023] In one embodiment, the conductor wires have a wire body which is coated with a coating at least over its longitudinal extension length taken up by the spring contact in the operating state, in particular at least over a predominant portion of its entire longitudinal extension length, in particular over its entire longitudinal extension length. The wire body can, for example, be made of solid material. The wire body is made of a first material, and the coating is made of a second material. For example, the first material can be a copper alloy, for example, the second material can be a palladium, silver, gold, tungsten and / or

[0024] Tin alloy. A tin alloy has proven particularly advantageous because it can be applied cost-effectively over a large length of the wire body, can protect the wire body from corrosion, and can enable easy contact with the conductor wire, for example, even outside the electrical connector via a tap. The wire body, corresponding to the conductor wire, is longitudinally elongated and has an extension length in each direction perpendicular to the longitudinal direction that is a large multiple of the extension length of the coating in the respective direction perpendicular to the longitudinal direction and thus the thickness of the coating, for example at least fifty times, in particular at least one hundred times, in particular at least three hundred times.in particular at least five hundred times. The first material thus forms a predominant portion of the cross-section of the conductor wire, in particular at least 98%, in particular at least 99%, in particular at least 99.5% of the cross-section of the conductor wire. Thus, current is transmitted through the conductor wire predominantly within the wire body. The coating and thus the second material are advantageously provided,to reduce contact resistance between the conductor wire and the spring contact and / or to reduce corrosion of the conductor wire and / or to improve sliding friction between the spring contact and the conductor wire. In one embodiment, the second material is more corrosion-resistant than the first material. In one embodiment, the second material is designed to achieve lower contact resistance between the conductor wire and the metal body than the first material. In one embodiment, at least the contact surface of the metal body is formed by a coating. Preferably, the metal body has a base body made of a first body material, the coating being made of a second body material, and the base body being coated with the coating. In one embodiment, the metal body has, as explained, a base body and a spring body,wherein only the base body forms the base body and is coated with the coating. In one embodiment, only the support surface, in one embodiment, only the contact surface is formed by the coating of the metal body. In one embodiment, the coating of the metal body or the second body material is a silver alloy. In other embodiments, the coating can also be, for example, palladium,Gold, tungsten or tin alloy. However, the design as a silver alloy has proven to be particularly advantageous for the durability of the system. In one embodiment, the second body material is more corrosion-resistant than the first body material. In one embodiment, the second body material is designed to achieve a lower contact resistance between the conductor wire and the metal body than the first body material. Within the scope of the present invention, it has proven particularly advantageous to combine the explained measures, in particular at least one of the explained coatings and the provision of at least one cam and the provision of electrically conductive lubricant, in order to thereby enable theThe spring force acting between the spring contacts and the respective associated lead wires and a simple design of the system components can particularly advantageously ensure both a low contact resistance between the spring contacts and the lead wires and a high level of system durability in the operating state. This is particularly advantageously achieved by enabling mobility of the lead wires relative to the spring contacts along the longitudinal direction in the operating state, thus enabling both easy implementation of the operating state and, where possible, preventing stress on components in the operating state. With the described provision of both a coating on the lead wire and a coating on the metal body, it has proven particularly advantageous to produce the coatings from a different material.The materials of the coatings differ, in particular, in that they are of varying degrees of nobleness, as this enables particularly good, long-lasting contact. Preferably, the coating of the conductor wire extends over a greater longitudinal extent than that of the metal body. Particularly preferably, the coating of the metal body is a silver alloy, and that of the conductor wire is a tin alloy. In one embodiment, the conductor wires arranged in the first current conducting rail are held fixed relative to the current conducting rail in the operating state in such a way that they are movable relative to the first current conducting rail upon thermal expansion within the first longitudinal end section of the first support rail.such that a longitudinal end of the respective conductor wire arranged in the electrical connector has a longitudinal position relative to the first support rail that depends on the thermal expansion of the respective conductor wire and changes its longitudinal position as a result of a temperature fluctuation. The metal body assigned to the respective conductor wire has a longitudinal position relative to the first support rail that is independent of the temperature fluctuation. Thus, the metal body is preferably fixed in its longitudinal position relative to the first support rail, regardless of the temperature at which the components of the system are in the operating state, whereas the longitudinal position of the longitudinal end of the respective conductor wire arranged in the electrical connector depends on the prevailing temperature. The metal body therefore moves, at most, negligibly due to temperature changes compared to the movement of the longitudinal end of the conductor wire.In particular, not at all. For example, the conductor rail can be fixed in a specific longitudinal region of the support rail relative to the support rail, regardless of the temperature, and the conductor wire can also be fixed in its position in a specific longitudinal region relative to the support rail, regardless of the prevailing temperature, whereby, however, said longitudinal end can move due to the different thermal expansion of the support rail, conductor rail, and conductor wire. In advantageous embodiments, it is accordingly provided that the conductor wires arranged in the second conductor rail are held fixed relative to the conductor rail in the operating state in such a way that, in the event of thermal expansion within the second longitudinal end section of the second support rail, they are movable relative to the first conductor rail in the operating state.Such that a longitudinal end of the respective conductor wire arranged in the electrical connector has a longitudinal position relative to the second support rail that depends on the thermal expansion of the respective conductor wire and changes its longitudinal position as a result of a temperature fluctuation, wherein the metal body associated with the respective conductor wire has a longitudinal position relative to the second support rail that is independent of the temperature fluctuation. In such advantageous embodiments, a temperature-dependent movement of the respective longitudinal end of the respective conductor wire can thus be deliberately enabled, whereby the structure of the system can be kept particularly simple, whereas negative effects can be prevented as far as possible by the inventive design of the electrical connector and the provision of the electrically conductive lubricant.

[0025] In one embodiment, the busbars are each fixed in their longitudinal position relative to the respective support rail in which they are arranged within a section of their longitudinal extent in the operating state. In one embodiment, they are movable relative to the support rail outside of this section of their longitudinal extent as a result of expansion, in particular thermal expansion. This can particularly advantageously prevent distortion of the busbar, but at the same time prevent the busbar from wandering relative to the respective support rail. In one embodiment, the conducting wires are each fixed in their longitudinal position relative to the respective support rail and / or relative to the respective busbar in which they are arranged within a section of their longitudinal extent in the operating state.Preferably, the conductor wires are movable outside this section of their longitudinal extension as a result of expansion relative to the support rail or current-carrying rail. Preferably, the section of their longitudinal extension lies outside the first and second longitudinal end sections of the respective support rail. Generally, the longitudinal end sections of the respective support rail or component extend from the respective longitudinal end, from which they extend toward the longitudinal center of the support rail or component, over less than 40%, in particular less than 30%, in particular less than 20%, of the longitudinal extension length of the support rail or component.

[0026] In one embodiment, the current guide rails each have a holding device with which they are fixed to a holding region of the respective support rail assigned to them. The electrical connector preferably has a holding device with which it is fixed to the coupling. The holding region of the support rail can be formed, for example, by a U-shaped indentation provided in the first support rail side wall and a U-shaped indentation provided in the second support rail side wall. Generally, the holding region of the support rail can form a projection on which the holding device can be supported. The support rail is preferably produced by forming from a sheet metal, wherein the holding region is formed by forming the sheet metal.Generally, the holding device of the respective conductor rail preferably has a plurality of holding sections spaced apart from one another in the longitudinal direction, which are distributed over at least 80% of the total extension length of the conductor rail. Thus, the holding device itself extends over at least 80% of the total extension length of the conductor rail, in particular at least 90% of the total extension length of the conductor rail. The total extension length of the conductor rail is the longitudinal extension length of the conductor rail, i.e., its total extension length along the longitudinal direction. By having a plurality of such spaced-apart holding sections, the conductor rail can be held supported on the support rail in a particularly advantageous manner, even during temperature fluctuations.The current conducting rail preferably has a plurality of current conducting profiles arranged one behind the other along the longitudinal direction, which, in the operating state, are held on the support rail so that they can move relative to one another along the longitudinal direction, and which each have at least one holding section of the holding device. By providing a plurality of current conducting profiles that can move relative to one another along the longitudinal direction, the current conducting rail can particularly advantageously assume a different longitudinal expansion depending on the temperature without generating stress on the conductor wires.In general, it should be noted at this point that a temperature fluctuation is always assumed to be a temperature fluctuation starting from an operating state in which the components of the system have a temperature of 20 °C, with a subsequent change in temperature occurring without any further changes being made to the relative arrangement of the components of the system to one another.

[0027] The invention further relates to a method for implementing an arrangement of lighting components, wherein each of the lighting components has at least one elongated support rail with a U-shaped cross-section designed to accommodate mounting bodies equipped with lighting devices. Each of the lighting components has a longitudinally elongated current conducting rail. Each of the current conducting rails has a plurality of channels arranged next to one another along an array direction, in each of which at least one longitudinally elongated conductor wire is arranged. In a first longitudinal end section of the support rail of each lighting component, a coupling with its first longitudinal section is arranged. With its second longitudinal section, the coupling projects beyond the support rail along the longitudinal direction. The entire longitudinal extent of the coupling is preferably formed by the first and second longitudinal sections of the coupling.An electrical connector is fixed to the coupling, which is connected by a first connection side to the conductor wires arranged in the busbar of the lighting component and which has a second connection side for connection to the conductor wires arranged in the busbar of another lighting component. The electrical connector has a plurality of connecting devices arranged next to one another along the alignment direction, each of which has a spring contact on each connection side for receiving one of the conductor wires. On at least one of the connection sides, in particular on the first and second connection sides, the spring contacts each have at least one metal body having a bearing surface on which an electrically conductive lubricant is provided.In the method according to the invention, a first lighting component is moved longitudinally toward a second lighting component, with the second longitudinal section of the coupling being inserted into the support rail of the second lighting component and the lead wires of the second lighting component being inserted into the spring contacts of the second connection side of the electrical connector. The support rails of the lighting components are fixed to one another by means of the coupling. The lead wires of the lighting components are electrically connected to one another by means of the electrical connector, with the lubricant provided on at least one connection side being arranged between the support surface of the metal body and the lead wire.

[0028] The invention further relates to a luminaire that is manufactured by means of a system according to the invention or a method according to the invention. The luminaire comprises a first and a second support rail, wherein a first current conducting rail is arranged in the first support rail and a second current conducting rail is arranged in the second support rail. The luminaire further comprises a coupling that fixes the two support rails to one another. In each of the current conducting rails, line wires are arranged next to one another along a row direction. The luminaire further comprises an electrical connector that has a plurality of connecting devices arranged next to one another along the row direction, each of which has a spring contact on each connection side for receiving one of the line wires.The luminaire further comprises at least one mounting body, which is arranged on the open side of at least one of the support rails and which, together with this support rail, encloses an interior of the luminaire perpendicular to the longitudinal direction, wherein an electrical functional element is arranged on the mounting body within the interior. On at least one of the connection sides, in particular on the first and second connection sides, the spring contacts each comprise at least one metal body against which the conductor wire received by the spring contact rests, wherein an electrically conductive lubricant is provided between a bearing surface of the metal body and the conductor wire.

[0029] In one embodiment, the support rail side walls of each support rail each have, in an upper end region, an indentation with an indentation base forming a transverse end of the indentation and with at least one indentation side forming a vertical end of the indentation. The indentation is preferably U-shaped in cross-section, i.e. in the cross-section running perpendicular to the longitudinal direction, so that the indentation base is formed by the U-base and the indentation side is formed by one of the U-legs. Such an indentation can improve the stability of the support rail and / or serve to fix, for example, a current conducting rail and / or the coupling and / or a mounting element. The indentation forms an undercut in the support rail side wall, which can serve to correspondingly fix the current conducting rail or mounting element or coupling.Generally preferably, the indentation extends continuously along the longitudinal direction of the support rail over the entire longitudinal extension length of the support rail. In one embodiment, the coupling is made from a formed sheet metal. In one embodiment, the support rail is made from a formed sheet metal. In one embodiment, the system comprises at least one mounting body made from a formed sheet metal. Furthermore, it should be generally noted that any longitudinal end section of a component always comprises one of the longitudinal ends of the component and extends from the longitudinal end to the longitudinal center of the component. Generally preferably, the longitudinal end section extends from the respective longitudinal end over less than 40%, in particular less than 30%, in particular less than 20% of the longitudinal extension of the component.Generally preferably, the longitudinal end section of the support rail has a longitudinal extension length of at least 10 cm, in particular at least 15 cm, in particular less than 50 cm, in particular less than 40 cm. Generally preferably, the longitudinal end section has a longitudinal extension length between 10 and 40 cm, in particular between 15 and 30 cm. Generally preferably, the longitudinal extension length of the first longitudinal end section of the support rail corresponds to the longitudinal extension length of the first longitudinal section of the coupling, and the longitudinal extension length of the second longitudinal end section of the support rail corresponds to the longitudinal extension length of the second longitudinal section of the coupling.

[0030] The various solutions according to the invention and their embodiments explained here may each have features that are explained here in connection with embodiments known from the prior art, in particular generic embodiments. Furthermore, the various solutions according to the invention and their embodiments can be combined in a particularly advantageous manner, so that they may each have features that are explained here in connection with other solutions and their embodiments.

[0031] The invention is explained in more detail below with reference to three figures using exemplary embodiments.

[0032] They show:

[0033] Figure 1: in a schematic diagram a

[0034] Embodiment of a luminaire according to the invention; Figure 2: in various schematic representations of the components of an embodiment of a system according to the invention;

[0035] Figure 3: in various schematic diagrams

[0036] Detailed views of components of an embodiment of a system according to the invention;

[0037] Figure 4: in various schematic principle representations, detailed views of components of an embodiment of a system according to the invention.

[0038] Figure 1 shows an embodiment of such a luminaire 100 in a highly simplified schematic representation for the purpose of explaining the basic design of an elongated luminaire 100 according to the invention. Such a luminaire 100 is elongated in the longitudinal direction X and has a plurality of support rails 1, 10 arranged one behind the other in the longitudinal direction X. The illustrated embodiment has a first support rail 1 and a second support rail 10. The support rails 1, 10 each have a U-shaped cross-section perpendicular to the longitudinal direction X, which defines a support rail interior. Together with mounting bodies 6 arranged on their open side and also arranged one behind the other in the longitudinal direction X, they enclose an interior of the luminaire 100 perpendicular to the longitudinal direction X. The same or different electrical functional elements can be arranged on the different mounting bodies 6.In the described embodiment, an LED module radiating downwards in the vertical direction Z is arranged outside the interior space on each of the mounting bodies 6, and an operating device for supplying the LED module is arranged inside the interior space, so that the LED module and operating device are arranged on opposite vertical sides of the mounting body 6, which is generally advantageous according to the invention. Furthermore, a translucent cover 101 is provided below each mounting body 6, through which the LED module can radiate light downwards and which can have optically effective sections assigned to the LED module to influence the light distribution. A system according to the invention generally preferably comprises such covers 101.In further embodiments, further mounting bodies 6 can be provided, which are designed as blind modules and thus do not carry any electrical functional element and which only serve to close off the open side of one of the support rails 1, 10.

[0039] Figure 2, comprising Figures 2a, 2b, 2c, 2d, 2e, 2f and 2g, shows, for explanatory purposes, various components of an embodiment of a system according to the invention, which are suitable, for example, for implementing a luminaire 100 according to Figure 1. The described embodiment comprises a plurality of support rails 1, 10, each having an identical cross-section. Figure 2a shows the cross-section of a first support rail 1 as well as the common cross-section of the first support rail 1 and the coupling 2 arranged in its first longitudinal end section of the described embodiment. From the illustrations according to Figure 2a, it can be seen that the support rail 1 has a support rail base 11 and two support rail side walls 12 extending from the support rail base 11 along the vertical direction Z. Each of the support rail side walls 12 forms a U-shaped indentation 121 in an upper end region.In general, it should be noted at this point that the upper end region, starting from the uppermost end of the support rail 1, preferably extends over at least 5% and in particular less than 50%, in particular between 5% and 40%, in particular between 10% and 30% of the vertical extension length of the support rail 1, wherein its upper end is defined by the uppermost end of the support rail 1. Each of the support rail side walls 12 further comprises a transverse support rail projection 13, which in this case is formed by the indentation 121. Furthermore, the support rail side walls 12 each comprise a support rail side wall section which forms a U-shaped receptacle 122, the open side of which points towards the support rail base 11 along the vertical direction Z, which is generally advantageous according to the invention.Generally, the support rail side wall section preferably forms a vertical end region of the respective support rail side wall 12, wherein the vertical end region preferably extends over a vertical extension length starting from the lowest vertical end of the support rail 1 over at least 5% and less than 50%, in particular between 5% and 40%, in particular between 10% and 30% of the vertical extension length of the support rail 1. The U-shaped receptacle 122 represents part of the guide of the support rail 1, which is designed to receive the coupling 2, as shown in the corresponding cross-sectional view of Figure 2a.Furthermore, each support rail side wall 12, generally advantageous according to the invention, has a retaining projection 123, which is designed, for example, as a stop for a mounting body 6 and / or as a retaining projection 123 corresponding to a retaining spring provided on the mounting body 6, so that by means of the retaining projections 123, a mounting body 6, generally advantageous according to the invention, can be reliably arranged on the open side of the support rail 1 and fixed thereto. In the operating state, a coupling 2 of the described embodiment is arranged in a first longitudinal end section of the first support rail 1. The coupling 2 has a coupling body with a U-shaped cross-section, which has a coupling base 21 and two coupling side walls 22 extending away from the coupling base 21 along the vertical direction Z.The coupling side walls 22 each rest with a lower end on a lower vertical guide section and with an upper end on an upper vertical guide section of the guide formed by the support rail 1, wherein the upper and lower vertical guide sections in the described exemplary embodiment and generally according to the invention are advantageously each formed by the support rail side walls 12 of the support rail 1. Furthermore, the coupling side walls 22 each rest with at least a vertical section along the transverse direction Y from the inside on a respective one of the support rail side walls 12 assigned to them, so that the coupling 2 in the operating state both with respect to the vertical direction Z and with respect to the transverse direction.

[0040] Y is fixed in its position relative to the support rail 1 by a positive connection, which is generally advantageous according to the invention. According to the invention, the position of the coupling 2 relative to the support rail 1 can be ensured in a generally advantageous manner on the one hand by the transverse and vertical compression of the coupling 2 relative to the support rail 1, which provides a frictional connection, and on the other hand by a scratch spring (not shown in the present figures), which is fixed to the coupling body and scratches against the support rail 1 from the inside with a spring section and thus further inhibits relative movement between the support rail 1 and the coupling 2.

[0041] Figures 2b, 2c, 2d, 2e, 2f, and 2g illustrate the transition in the operating state between two support rails 1, 10 arranged one behind the other and fixed to one another in the operating state, based on the representation of various components of the system in their respective positions in the operating state. Figure 2b schematically shows a view of a second longitudinal end of the second support rail 10, whereas Figure 2c shows a view of a first longitudinal end of a first support rail 1, wherein a first longitudinal section of a coupling 2 of the system is already arranged in a first longitudinal end section of the support rail 1.From a view of Figures 2b and 2c together, it can be seen that a current conducting rail 3 with channels open on an access side of the current conducting rail 3 is arranged on the support rail base 11 of the second support rail 10, wherein a conducting wire 4 is arranged in each of the channels and is accessible from the access side of the current conducting rail 3. It can be seen from Figure 2f that the current conducting rail 3 has holding sections 31 over a considerable area of ​​its longitudinal extent, by means of which it is fastened to the support rail 1 in the operating state, wherein two in each case along the.

[0042] Adjacent holding sections 31 are spaced apart from one another in the longitudinal direction X. An electrical connector 5 is fixed to the coupling 2 and is connected by its first connection side to the lead wires 4 which are arranged accordingly in the current conducting rail 3 of the first support rail 1, as is explained in Figure 2b with reference to the current conducting rail 3 and the second support rail 10. The second support rail 10 and the first support rail 1 are used in a typical application according to the invention, ie in a typical method for connecting two lighting components orto create an elongated luminaire, connected to one another by moving the first support rail 1 along the longitudinal direction X towards the second support rail 10 and in the process inserting the second longitudinal section of the coupling 2, which in the illustration shown in Figure 2c protrudes from the first support rail 1 along the longitudinal direction X, into the guide of the second support rail 10. The first support rail 1 with the coupling 2 fixed thereto and the second support rail 10 are moved towards one another with their mutually facing longitudinal ends until their longitudinal ends abut one another. Thus, in a generally advantageous manner according to the invention, the second longitudinal end of the second support rail 10, which is shown in Figure 2b, rests against the first longitudinal end of the support rail 1 in the operating state or is only spaced from it by a small gap.The electrical connector 5 is explained in more detail in Figures 2d and 2e, wherein for better explanation in the illustration according to Figures 2d and 2e the coupling 2 has been hidden so that the electrical connector 5 can be seen more clearly. The electrical connector 5 has an insulating plastic housing by means of which it is fixed to the coupling 2. In this plastic housing, a plurality of connecting devices are provided, which are arranged one behind the other in an array direction A and at each of whose two longitudinal ends a spring contact is provided for receiving a respective conductor wire. Each spring contact comprises a base body and a spring body 51, wherein the base bodies of the two spring contacts comprised by a specific connecting device are each formed by a common body 52.As can be seen from Figure 2g, in the operating state, the conductor wires 4 of the busbars 3, which are arranged in one of the first and second support rails 1, 10, are electrically connected to one another by the base bodies or the body 52 and the spring bodies 51. In this case, exactly one conductor wire 4, which is arranged in the busbar 3 arranged in the first support rail 1, is electrically connected to exactly one conductor wire 4, which is arranged in the busbar 3 arranged in the second support rail 10. For this purpose, a first spring body 51 provided on the first connection side of the electrical connector 5 presses a first conductor wire 4 of this pair of conductor wires 4 against the body 52, and a second spring body 51, which is provided on the second connection side of the electrical connector 5, presses a second conductor wire 4 of the said pair of conductor wires 4 against the body 52.Since the body 52 and preferably also the spring bodies 51 are electrically conductive, the two conductor wires 4 of the pair are thus electrically conductively connected to one another. While Figure 2g shows the electrical connection of the conductor wires 4, which are arranged in the two support rails 1, 10 or are encompassed by the two luminaire components, Figure 2f shows the corresponding arrangement in the operating state of the current conducting rails 3, which are arranged in the two support rails 1, 10, and the electrical connector 5 with its connector housing, specifically with a view of the rear side facing away from the access side of the current conducting rail 3, which in the operating state points towards the support rail base 11 of the support rails 1, 10.The views of the first longitudinal end of the first support rail 1 shown in Figures 2d and 2e, in which various components of the system are not shown so that the longitudinal section of the connector 5 or its connector housing or its protruding spring contacts projecting from the first support rail 1 beyond its first longitudinal end can be seen, serve to illustrate that the second luminaire component, i.e. the second support rail 10 with the current conducting rail 3 arranged therein and the lead wires 4 arranged therein, can be pushed onto the first longitudinal end of the support rail 1 in a simple manner by pushing it in the longitudinal direction X in order to implement the operating state, such that the lead wires 4 of the two luminaire components are electrically conductively connected to one another in pairs by the electrical connector 5.

[0043] Figure 3, comprising Figures 3a, 3b and 3c, shows various detailed views of components of an embodiment of the system according to the invention in various schematic principle representations. The representations according to Figure 3 serve to illustrate the connection between the electrical connector 5 and the lead wires 4 on one connection side of the electrical connector 5. In Figures 3a, 3b and 3c, the second connection side of the electrical connector 5 is shown in the foreground, but without the connector housing of the connector 5. From the first connection side, several spring bodies 51 of spring contacts are also shown, which are provided on the first connection side, wherein a lead wire 4 is each received in the spring contacts of the first connection side. In Figure 3a, the second connection side is shown without any lead wire 4 received, but ready to receive lead wires 4.On the second connection side, a plurality of spring contacts are provided, each having a spring body 51 and a base body. The base body is formed by a longitudinal end section of the body 52 of the respective connecting device, which has a spring contact on each connection side. The longitudinal end region of the base body generally extends, preferably starting from the respective longitudinal end, over at least 5% and at most 40%, in particular between 10% and 30% of the longitudinal extension length of the body 52. ​​The spring body 51 of each spring contact is designed in the manner of a cage and is locked to the base body of the respective spring contact on both transverse sides of the latter, which is generally advantageous according to the invention. According to the invention, the base body has, for this purpose, at least one lateral projection 55, which the cage-like spring body 51 engages behind vertically.Furthermore, the spring body 51 has a spring section with which it spans the support surface 54 of the respective spring contact formed by the base body. The base body also has an insertion bevel 53 which opens into the support surface 54 so that a conductor wire 4 can be inserted into the respective spring contact particularly easily. Figure 3b shows a schematically, highly simplified representation for illustrative purposes, of the electrically conductive lubricant 56 which is provided on the metal body of the respective spring contact in the form of droplets arranged spaced apart from one another in the longitudinal direction X on the support surface 54. For illustrative purposes, the spring body 51 of the front spring contact shown in Figure 3b is not shown so that the various droplets of electrically conductive lubricant 56 can be better seen.Figure 3c shows a conductor wire 4 in the state it occupies relative to the electrical connector 5 in the operating state. The conductor wire 4 is received in a spring contact, with the electrically conductive lubricant 56 arranged between the contact surface 54 of the spring contact and the conductor wire 4. As shown in Figure 3b, the electrically conductive lubricant 56 has been previously applied to the contact surface 54 in the form of droplets. The spring body 51 presses with its spring portion along the vertical direction Z against the conductor wire 4 and thus presses the conductor wire 4 against the contact surface 54. The spring body 51 only contacts the conductor wire 4 over a small area, whereas the conductor wire 4 rests on the contact surface 54 over a significantly larger area. The contact surface 54 and also the electrically conductive lubricant 56 are provided on only one side of the conductor wire 4.Furthermore, the spring body 51 is specifically designed such that its spring section is rounded at the point at which it presses against the lead wire 4, so that the friction between the spring body 51 and the lead wire 4 is as low as possible in the operating state.

[0044] Figure 4, comprising Figures 4a and 4b, shows various detailed views of components of an embodiment of the system according to the invention in various schematic principle representations. In the embodiment shown in detail in Figure 4, part of the support surface of the spring contact shown is formed by a cam 541 that projects in the vertical direction Z. The cam 541 and the entire support surface are formed by the base body of the spring contact, which in this case is formed by the body 52 of the electrical connector, as explained above with regard to embodiments. The spring contact shown in Figure 4 has, analogous to the spring contacts explained above, a base body and a spring body 51, wherein the base body has an insertion bevel 53 that opens into the support surface 54.The support surface has a U-shaped cross-section, with the cam 541 being designed as a projection projecting from the U-bottom of the U-shaped cross-section in the vertical direction Z, which projection connects the U-legs of the U-shaped cross-section to one another. The projection formed by the cam 541 extends less far in the vertical direction from the U-bottom than the U-legs, so that a conductor wire received in the spring contact shown in Figure 4 continues to be well guided by the U-shaped design of the support surface 54 in the operating state. While Figure 4a shows both the spring body 51 and the longitudinal section of the base body 52 forming the base body of the spring contact shown, Figure 4b only shows the aforementioned longitudinal section of the base body 42 so that the design of the support surface 54, in particular of the cam 541, of this embodiment is particularly clearly visible.In a generally particularly advantageous embodiment, the support surface 54 is formed over its entire extension length, in which it has a U-shaped cross-section, and / or the entire part of the support surface 54 formed by the base body, by a coating applied to a base body of the body 52, preferably exclusively over the extension area of ​​the support surface. In the embodiment shown in Figure 4b, the support surface 54 is formed as a depression with a U-shaped cross-section, in which the cam 541 is provided.In a particularly advantageous embodiment, this spring contact according to Figure 4 can be used in a system in which the lead wires are coated, thereby ensuring simple implementation of the operating state, avoidance of tension in the system as far as possible, and a contact resistance between the spring contact and the lead wire that remains as low as possible over the long term. In the embodiment according to Figure 4 and generally advantageous according to the invention, the cam 541 is cylindrical on its upper side, against which the associated lead wire rests in the operating state, wherein the.

[0045] The cylinder axis extends in the transverse direction Y, generally perpendicular to the longitudinal direction and perpendicular to the direction in which the cam 541 protrudes. This enables a linear contact connection between the lead wire and the support surface by means of the cam 541, which can be particularly advantageous for the long-term electrical connection between the lead wire and the spring contact.

[0046] Ma / wj 3 March 2025

[0047] Applicant:

[0048] TRILUX GmbH & Co. KG

[0049] 59759 Arnsberg Durable light strip

[0050] List of reference symbols

[0051] 1 first support rail

[0052] 2 clutch

[0053] 3 current guide rail

[0054] 4 Conductor wire

[0055] 5 electrical connectors

[0056] 6 mounting bodies

[0057] 10 second support rail

[0058] 11 Support rail base

[0059] 12 Support rail side wall

[0060] 13 Support rail projection

[0061] 17 Implementation

[0062] 21 Clutch base

[0063] 22 Coupling side wall

[0064] 31 stopping section

[0065] 51 spring bodies

[0066] 52 bodies

[0067] 53 insertion bevel

[0068] 54 contact surface

[0069] 55 lead

[0070] 56 Lubricants

[0071] 100 lights

[0072] 101 translucent cover

[0073] 121 indentation

[0074] 122 U-shaped mount

[0075] 123 Holding projection

[0076] A alignment direction

[0077] X Longitudinal direction

[0078] Y transverse direction

Claims

Patent claims 1. System for realizing a luminaire (100) elongated in a longitudinal direction (X), the system comprising a plurality of support rails (1, 10) with a U-shaped cross-section elongated in the longitudinal direction (X) and designed to receive mounting bodies (6) equipped with lighting means, each of which has a support rail base (11) extending in a transverse direction (Y) between two support rail side walls (12) and an open side opposite the support rail base (11) in a vertical direction (Z), wherein the system comprises a coupling (2) having a coupling body with a U-shaped cross-section formed by a coupling base (21) and two coupling side walls (22), wherein each of the support rails (1, 10) has a guide for the coupling (2),wherein by inserting a first longitudinal section of the coupling (2) comprising a first longitudinal end of the coupling (2) into a first longitudinal end section of the guide of any first of the support rails (1, 10) and inserting a second longitudinal section of the coupling (2) comprising a second longitudinal end of the coupling (2) into a second longitudinal end section of the guide of any second of the support rails (1, 10), an operating state of the system can be realized in which the first and second support rails (1, 10) are fixed relative to one another by the coupling (2), wherein the system further comprises a plurality of current conducting rails (3) elongated in the longitudinal direction (X), each of which is arranged in a direction perpendicular to, Channels arranged side by side in the longitudinal direction (X) extending in the direction of arrangement (A), elongated in the longitudinal direction (X) and open on one access side of the current conducting rail (3) wherein in each channel at least one conductor wire (4) elongated in the longitudinal direction (X) is arranged, wherein in the operating state a first of the current conducting rails (3) is arranged in the first support rail (1) and a second of the current conducting rails (3) is arranged in the second support rail (10), and an electrical connector (5) is fixed to the coupling (2) or to the first support rail (1), which in the operating state is connected with a first connection side to the conductor wires (4) arranged in the first current conducting rail (3) and with a second connection side to the conductor wires (4) arranged in the second current conducting rail (3), wherein the electrical connector (5) has a plurality of connecting devices arranged next to one another along the alignment direction (A), each of which has a spring contact on each connection side in which one of the conductor wires (4) is arranged,wherein, in the operating state, one of the connecting devices in each case electrically connects a conductor wire (4) arranged in the first current conducting rail (3) to one of the conductor wires (4) arranged in the second current conducting rail (3), characterized in that on at least one of the connection sides, in particular on the first and the second connection side, the spring contacts each comprise a metal body against which, in the operating state, the conductor wire (4) received by the spring contact rests, wherein an electrically conductive lubricant (56) is provided between a bearing surface (54) of the metal body and the conductor wire (4).

2. System according to claim 1, characterized in that the conducting wire (4) has two sides pointing away from each other along a direction perpendicular to the longitudinal direction (X), which sides each have a different end of the conducting wire (4) along this direction, wherein the lubricant (56) and / or the support surface (54) is provided on only one of these two sides in the operating state, and / or that the conducting wire (4) in the operating state rests on the spring contact assigned to it exclusively via a contact surface formed by it, wherein at least 50% of the contact surface rests indirectly on the support surface (54) via the electrically conductive lubricant (56) provided on it.

3. System according to one of the preceding claims, characterized in that the metal body has a base body and a spring body (51) connected to the base body, wherein the base body forms the support surface (54) and the spring body (51) spans the support surface (54), wherein in the operating state the associated lead wire (4) rests on the support surface (54) and is pressed against the support surface (54) by the spring body (51), wherein in particular the lubricant (56) is arranged at least predominantly on the support surface (54), wherein in particular the metal body rests on the associated lead wire (4) exclusively with a contact surface and the contact surface forms at least 70%, in particular at least 80%, in particular at least 90% of the contact surface.

4. System according to one of the preceding claims, characterized in that the support surface (54) has at least in longitudinal sections a U-shaped cross-section perpendicular to the longitudinal direction (X), wherein in the operating state the associated conducting wire (4) is arranged within the U-shaped cross-section.

5. System according to one of the preceding claims, characterized in that the support surface (54) is at least partially formed by a cam (541) of the metal body projecting perpendicular to the longitudinal direction (X). is formed, wherein in particular the support surface is formed at least partially by two cams (541) of the metal body which project in a same direction perpendicular to the longitudinal direction (X) and are spaced apart from one another in the longitudinal direction (X), wherein in particular the at least one cam (541) is designed in the manner of a projection which projects from a U-base of a U-shaped cross-section of the metal body and connects U-legs of the U-shaped cross-section to one another, which projection in particular extends less far away from the U-base than the U-legs.

6. System according to one of claims 3 to 5, characterized in that the base body has an insertion bevel (53) at a longitudinal end facing the respective connection side, which opens into the support surface (54).

7. System according to one of claims 3 to 6, characterized in that the spring body (51) is designed in the manner of a cage which is locked in position with the base body.

8. System according to one of claims 3 to 7, characterized in that the spring contacts on the first and second connection side of each connecting device each have a base body and a spring body (54), wherein the base bodies of the two spring contacts of the connecting device are formed by a common, bar-shaped, electrically conductive body (52).

9. System according to one of the preceding claims, characterized in that the lubricant (56) is applied to the support surface (54) of each metal body in a plurality of, in particular at least three, droplets spaced apart from one another in the longitudinal direction (X), wherein in particular the droplets have a longitudinal extension length of less than 3 mm, in particular less than 2 mm, and a transverse extension length of less than 3 mm, in particular less than 2 mm.

10. System according to one of the preceding claims, characterized in that the lubricant (56) applied to the support surface (54) of each metal body has a mass of at least 1 mg and at most 10 mg, in particular between 1 mg and 7 mg, in particular between 1 mg and 3 mg.

11. System according to one of the preceding claims, characterized in that the conducting wires (4) have a wire body which is coated with a coating at least over its longitudinal extension length taken up by the spring contact in the operating state, in particular over its entire longitudinal extension length, wherein the wire body is made from a first material, in particular a copper alloy, and the coating is made from a second material, in particular a palladium and / or tin alloy, wherein in particular the second material is more corrosion-resistant than the first material and / or enables the realization of a lower contact resistance between the conducting wire and the metal body than the first material.

12. System according to one of the preceding claims, characterized in that at least the bearing surface (54) of the metal body is formed by a coating, wherein in particular the coating is a silver alloy, wherein in particular the metal body comprising a base body coated with the coating, which is made of a first body material and is coated with the coating, wherein the coating is made of a second body material that is more corrosion-resistant than the first body material and / or enables the realization of a lower contact resistance between the conductor wire and the metal body than the first body material.

13. System according to one of the preceding claims, characterized in that the conductor wires (4) arranged in the first current conducting rail (3) are held fixed relative to the current conducting rail (3) in the operating state in such a way that they are movable relative to the first current conducting rail (3) in the event of thermal expansion within the first longitudinal end section, so that a longitudinal end of the respective conductor wire arranged in the electrical connector (5) (4) has a longitudinal position relative to the first support rail (1) which is dependent on the thermal expansion of the respective conducting wire (4) and changes its longitudinal position as a result of a temperature fluctuation, wherein the metal body assigned to the respective conducting wire (4) has a longitudinal position relative to the first support rail (1) which is independent of the temperature fluctuation.

14. System according to one of the preceding claims, characterized in that the current conducting rails (3) are fixed in their longitudinal position relative to the respective support rail (1, 10) in which they are arranged within a section of their longitudinal extent in the operating state, wherein they are movable in particular outside this section of their longitudinal extent as a result of an expansion relative to the support rail (1, 10), and / or that the conductor wires (4) are fixed in their longitudinal position relative to the support rail (1, 10) in the operating state within a section of their longitudinal extension in their longitudinal position are fixed relative to the respective support rail (1, 10) and / or current conducting rail (3) in which they are arranged, wherein they are movable in particular outside this section of their longitudinal extent as a result of an expansion relative to the support rail (1, 10) or current conducting rail (3), wherein in particular this section of their longitudinal extent lies outside the first and second longitudinal end section of the respective support rail (1, 10).

15. System according to one of the preceding claims, characterized in that the current conducting rails (3) each have a holding device with which they are fixed to a holding region of the support rail (1, 10) respectively assigned to them, and the electrical connector (5) has a holding device with which it is fixed to the coupling (2), wherein in particular the holding device of the respective current conducting rail (3) has a plurality of holding sections (31) spaced apart from one another in the longitudinal direction (X), which are distributed over at least 80% of a total extension length of the current conducting rail (3).

16. Method for realizing an arrangement of lighting components, wherein each of the lighting components has at least one elongated support rail (1, 10) with a U-shaped cross-section, designed to receive mounting bodies (6) equipped with lighting means, each of which has a support rail base (11) extending in a transverse direction (Y) between two support rail side walls (12) and an open side opposite the support rail base (11) in a vertical direction (Z), wherein each of the lighting components has a current conducting rail (3) elongated in the longitudinal direction (X), which is arranged in the support rail (1, 10) of the lighting component and fixed relative to it, and which are arranged side by side in an array direction (A) running perpendicular to the longitudinal direction (X), elongated in the longitudinal direction (X) and on an access side of the A current conducting rail (3) has open channels, wherein at least one conducting wire (4) elongated in the longitudinal direction (X) is arranged in each channel, wherein a coupling (2) is arranged with its first longitudinal section in a first longitudinal end section of the support rail (1, 10) of each luminaire component, said coupling protruding with its second longitudinal section beyond the support rail (1, 10) along the longitudinal direction (X) and to which an electrical connector (5) is fixed, which is connected with a first connection side to the conducting wires (4) arranged in the current conducting rail (3) of the luminaire component and which has a second connection side for connection to the conducting wires (4) arranged in the current conducting rail (3) of another luminaire component, wherein the electrical connector (5) has a plurality of connecting devices arranged next to one another along the alignment direction (A),which each have a spring contact on each connection side for receiving one of the lead wires (4), characterized in that on at least one of the connection sides, in particular on the first and the second connection side, the spring contacts each comprise at least one metal body which has a bearing surface (54) on which an electrically conductive lubricant (56) is provided, wherein a first luminaire component is moved along the longitudinal direction (X) towards a second luminaire component and in the process the second longitudinal section of the coupling (2) is inserted into the support rail (1, 10) of the second luminaire component and the lead wires (4) of the second luminaire component are inserted into the spring contacts of the second connection side of the electrical connector (5), wherein the support rails (1,10) of the luminaire components are fixed to one another by means of the coupling (2) and the lead wires (4) of the luminaire components are electrically connected to one another by means of the electrical connector (5) and the lubricant (56) provided on the at least one connection side is applied between the, support surface (54) of the metal body and the lead wire (4).

17. Luminaire (100) manufactured by means of a system according to one of claims 1 to 12 and / or by means of a method according to claim 13, wherein the luminaire (100) comprises a first and a second support rail (1, 10) with a U-shaped cross-section, each having a support rail base (11) extending in a transverse direction (Y) between two support rail side walls (12) and an open side opposite the support rail base (11) in a vertical direction (Z), wherein the support rail side walls (12) extend away from the support rail base (11) in the vertical direction (Z) and, together with the support rail base (11), delimit a support rail interior of the respective support rail (1, 10), wherein the luminaire (100) comprises a coupling (2) having a coupling body with a U-shaped cross-section formed by a coupling base (21) and two coupling side walls (22), wherein each of the Support rails (1,10) has a guide for the coupling (2), wherein the first and second support rails (1, 10) are fixed to one another by the coupling (2), wherein a first current conducting rail (3) is arranged in the first support rail (1) and a second current conducting rail (3) is arranged in the second support rail (10), wherein the current conducting rails (3) each have channels arranged side by side in a direction of alignment (A) running perpendicular to the longitudinal direction (X), which are elongated in the longitudinal direction (X) and open on an access side of the current conducting rail (3), wherein at least one conductor wire (4) elongated in the longitudinal direction (X) is arranged in each channel, an electrical connector (5) is fixed to the coupling (2), which is connected with a first connection side to the conductor wires (4) arranged in the first current conducting rail (3) and which is connected with a second connection side to the conductor wires (4) arranged in the second current conducting rail (3),wherein the electrical connector (5) comprises a plurality of connecting devices arranged side by side along the alignment direction (A), which on each connection side, each have a spring contact for receiving one of the conducting wires (4), wherein the luminaire (100) comprises a mounting body (6) which is arranged on the open side of at least one of the support rails (1, 10) and which, together with the support rail (1, 10), encloses an interior of the luminaire (100) perpendicular to the longitudinal direction (X), wherein an electrical functional element is arranged on the mounting body (6) within the interior, characterized in that on at least one of the connection sides, in particular on the first and the second connection side, the spring contacts each comprise at least one metal body against which the conducting wire (4) received by the spring contact rests, wherein an electrically conductive lubricant (56) is provided between a bearing surface (54) of the metal body and the conducting wire (4).

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