Sealed light strip

Abstract

The invention relates to a system for creating a luminaire that is elongated in the longitudinal direction X, wherein the system comprises multiple mounting bodies (2) and at least one support rail (1) with a U-shaped cross-section and 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. The system comprises a sealing device which, in the operating state, is arranged between two mounting bodies (2) that are adjacent in the longitudinal direction X, and which has two sealing surfaces that are each assigned to exactly one of the adjacent mounting bodies, wherein a respective sealing section is provided on each of the adjacent mounting bodies (2), via which it sealingly rests against the assigned sealing surface in the operating state.

Description

[0001] Sealed light strip

[0002] The invention relates to a system for realizing a longitudinally elongated luminaire, a luminaire and components of the system according to the invention.

[0003] Generic systems are suitable for realizing a luminaire that is elongated in a longitudinal direction and that has at least one longitudinally elongated support rail and at least one mounting body. The systems often have a plurality of support rails and a plurality of mounting bodies, wherein to realize the luminaire the support rails are arranged one behind the other in the longitudinal direction and connected to one another and the mounting bodies are arranged one behind the other in the longitudinal direction. Luminaires manufactured using such systems are often also referred to as strip lights, since such systems can be used to produce very elongated and thus strip-like luminaires. Preferably, all support rails and all mounting bodies have the same cross-section. Preferably, at least some, in particular all, support rails or mounting bodies are of identical design.

[0004] The support rail typically has a support rail base and two support rail side walls extending away from the support rail base in a vertical direction that is perpendicular to the longitudinal direction. The support rail base runs transversely between the support rail side walls, so that the support rail side walls are spaced apart from one another in the transverse direction by the support rail base. The transverse direction runs perpendicular to the vertical direction. The support rail base and the support rail side walls together form a wall that defines a receiving space that is open at both longitudinal ends of the support rail and is designed to accommodate electrical supply lines and electrical functional elements. To create a luminaire, the functional elements are connected to the supply lines arranged in the support rail.The supply lines are often provided by conductor wires routed in a busbar, as explained in more detail below. The support rail often has a U-shaped cross-section perpendicular to the longitudinal direction, so that the receiving space is open not only at the longitudinal ends of the support rail, but also at one vertical end of the support rail.

[0005] When implementing a luminaire using a generic system using the mounting body explained, the mounting body is usually mounted on the open vertical end of the support rail, so that the mounting body vertically delimits the receiving space on its side vertically opposite the support rail base. To implement the luminaire, at least one functional element and one contact device are usually mounted on the mounting body, and the mounting body is accordingly equipped to implement the luminaire, and the contact device is brought into electrically conductive connection with at least some, in particular all, of the supply lines arranged in the support rail, in particular conductor wires, which are arranged in a current conducting rail arranged in the receiving space of the support rail.Functional elements that can be provided include, for example, lighting modules, in particular comprising circuit boards with LEDs, operating devices, radio modules, sensors such as cameras, or other electrically operated elements. Generally, an operating device as a functional element and a contact device are preferably arranged on at least one of the mounting bodies of a luminaire realized in this way, preferably on the side of the mounting body facing the interior. Generally, a lighting module is preferably arranged as a further functional element on an outer side of the mounting body facing away from the interior.

[0006] As explained, in luminaires of this type, the supply lines are often provided via conductor wires guided in conductor rails. The conductor wires and conductor rail are elongated in the longitudinal direction. The conductor rail has longitudinally running channels that are arranged next to one another in a transverse direction perpendicular to the longitudinal direction. Since the channels are lined up next to one another along the transverse direction, the transverse direction is sometimes also referred to as the alignment direction. In some embodiments, the transverse direction runs parallel to the transverse direction. Generally, the transverse direction, vertical direction, and longitudinal direction are each perpendicular to one another. At least one conductor wire is arranged in at least some of the channels. The channels are designed to insulate the conductor wires running in them from one another.To insulate the conductor wires from one another, channel walls run in the transverse direction, forming the channels. The channels are preferably open on one access side, with the access side pointing perpendicular to the transverse direction and perpendicular to the longitudinal direction, so that the conductor wires arranged in the channels are accessible from the access side and can thus be contacted, with the channels preferably being continuously open on the access side over their longitudinal extent. The access side preferably points towards the open vertical end of the receiving space formed by the support rail. The channels are preferably closed from the support rail on their side facing away from the access side, with which the current conducting rail is preferably mounted adjacent to the support rail, to insulate the conductor wires.Due to their arrangement in the conductor rail, each of the conductor wires is sufficiently spaced from the other conductor wires to be insulated from them. For this purpose, the conductor wires are preferably arranged such that two transversely adjacent conductor wires are either sufficiently spaced apart on different duct walls of a duct or are separated from each other by a duct wall running between them, separating two ducts. The support rail typically serves to fix the luminaire to a structure, for example, a ceiling.

[0007] The support rail is usually attached to a building structure via its support rail base. The luminaire, which is realized using a generic system, usually has an interior space formed by the aforementioned receiving space of the support rail, wherein the interior space is delimited with respect to the transverse direction and with respect to the vertical direction jointly by the support rail and mounting body. It is often delimited in the longitudinal direction by support rail protective caps, which are arranged at the longitudinal ends of the support rail to create the luminaire, so that a protected interior space is formed for the supply lines and in particular for at least some of the functional elements. While the support rail(s) and mounting body thus enclose the interior space perpendicular to the longitudinal direction, i.e. circumferentially around a longitudinal axis, the support rail protective cap closes off the interior space with respect to the longitudinal direction and thus forms one longitudinal end of the interior space.The mounting rail protective cap is preferably made of plastic, in particular as an injection-molded component. The mounting rail and the mounting body are generally manufactured separately from one another; particularly preferably, the mounting rail and / or the mounting body are each manufactured from a single sheet metal by forming. To create a luminaire, the mounting body is preferably held to the mounting rail by a retaining spring.For this purpose, the support rail usually has a holding section, in particular in the form of a projection, on the inner sides of its support rail side walls facing one another, wherein the holding spring is firmly connected to the mounting body and, in its state connected to the mounting body, has elastically deflectable holding arms at its transverse end, which can be elastically deflected towards one another in the transverse direction during a vertical mounting movement of the mounting body with the holding spring attached thereto, while they are on the.

[0008] Holding sections of the support rail side walls are moved past, after which they engage behind these holding sections with elastically induced restoring and thus elastically induced movement away from one another in the transverse direction, whereby the mounting body can be reliably held on the support rail. Each of the holding sections is encompassed by one of the support rail side walls and thus formed by it. For example, the support rail can be produced from a sheet metal by means of forming, wherein the holding section is formed by a formed section of the support rail side wall. For example, the support rail side wall can form a transverse outer side of the support rail and the holding section can be provided on an inner side of the support rail side wall spaced apart from the transverse outer side in the transverse direction.Preferably, the contact device is attached to the mounting body and electrically conductively connected to at least one electrical functional element, which is also attached to the mounting body. Preferably, the mounting body, contact device, current conducting rail, and support rail are configured to correspond to one another in such a way that, during the mounting movement, contact fingers of the contact device are inserted into channels of the current conducting rail, thereby electrically connecting the functional element via the contact device to at least some of the conductor wires arranged in the current conducting rail. For example, the holding sections of the support rail side walls can be formed by deforming the support rail side walls.To realize a luminaire using a system having a busbar, it is first necessary for the busbar to be arranged in the receiving space formed by the support rail and fastened to the support rail. Subsequently, the mounting body is fastened to the support rail so that the mounting body delimits the interior space, in particular delimits the interior space on a vertical side, i.e., closes the receiving space while forming the interior space. Embodiments are known in which the explained busbar is fastened to at least one of the support rail side walls. Frequently, the explained busbar is fastened to the support rail base.The mounting rail and supply lines, in particular the provision of the described busbar with conductor wires, provide a structure that enables the positioning of functional elements and the electrical supply of functional elements along the length of the mounting rail. Typically, the busbar extends over at least 80%, in particular at least 90%, in particular at least 95%, of the longitudinal extent of the mounting rail. The busbar is usually made of plastic, in particular by extrusion or injection molding.

[0009] To implement a luminaire using a generic system, it is necessary that several mounting bodies are arranged one behind the other in the longitudinal direction on a support rail and / or that several support rails are arranged one behind the other to form a support rail arrangement and then several mounting bodies are fastened to the support rail arrangement. By arranging the mounting bodies on the open side of the support rail or support rail arrangement, an interior of the luminaire is closed off on the side facing away from the support rail base. The mounting bodies are thus arranged on the support rail or support rail arrangement in such a way that they connect the support rail side walls on the side facing away from the support rail base or close the open side of the support rail or support rail arrangement.In advantageous embodiments, a busbar with conductor wires is first arranged in each of the support rails. The support rails are then arranged one behind the other in the longitudinal direction, and the conductor wires of their busbars are electrically connected to one another. For this purpose, an electrical connector is preferably used, which connects a conductor wire from one of the busbars to a conductor wire from the other of the busbars. Usually, two support rails arranged one behind the other in the longitudinal direction are connected to one another by a coupling. Such couplings can, for example, be designed as a U-profile that is inserted into two adjacent support rails and fastened therein, for example, clamped and / or screwed.In most cases, each of the coupling side walls is fixed to an associated support rail side wall of each of the two longitudinally adjacent support rails, which are connected to one another by the coupling. The support rails are usually fixed relative to one another perpendicular to the longitudinal direction by the mechanical coupling. Generally, the coupling is preferably made from a sheet metal. The coupling is preferably made from a thicker sheet metal than the support rail and than the mounting body. When connecting two longitudinally adjacent support rails with a coupling, as explained above, the electrical connector is preferably fixed to the coupling. Since the supply lines and in particular at least some of the electrical functional elements are arranged in the interior of the luminaire manufactured by means of a generic system, the interior must be sufficiently protected. Depending on the requirements of the luminaire, i.e.Depending on the environment in which the luminaire is used, different sealing requirements exist. For example, it is a well-known requirement that the system must be suitable for creating a luminaire whose interior is sealed in such a way that the IP50 standard, and in particular the IP54 standard, is met. Systems that meet such requirements must be designed with correspondingly complex features. For example, there is a risk of openings large enough to allow dust and / or water to penetrate the interior at the joints between two support rails arranged one behind the other in the longitudinal direction and / or at the joints between two mounting bodies arranged one behind the other in the longitudinal direction and / or at an actuating element for actuating a retaining spring with which the mounting body is attached to the support rail. This risk is only inadequately and / or costlyly countered with generic systems or with manufactured luminaires.

[0010] The present invention is therefore based on the object of providing a system for the realization of a luminaire or a luminaire or components of such a system, with which the most advantageous realization of a sealed luminaire or a sealed light strip is possible. The present invention proposes various solutions for solving this problem. Each of the solutions described below is individually suitable for contributing to the solution of the stated problem and thus represents a separate solution to the problem. The described solutions and their embodiments can be combined with one another particularly advantageously. The described solutions and their

[0011] Embodiments may thus include features disclosed in connection with other solutions or other embodiments. Furthermore, the described solutions and their embodiments may include features explained above in connection with generic systems.

[0012] As a solution to the problem underlying the invention, the invention proposes a system having a plurality of mounting bodies and at least one support rail with a U-shaped cross-section. The system is designed, as intended, for the realization of a longitudinally elongated luminaire. As explained for generic systems, the mounting body is to be arranged and fastened to the support rail. In the course of the realization of such a luminaire, the support rail and the mounting bodies arranged thereon jointly enclose an interior space in which supply lines and, in particular, at least one functional element of the luminaire are arranged. As explained for generic systems, a contact device and / or an operating device, for example, can be arranged on the side of at least one of the mounting bodies facing the interior space and fixed to this mounting body.For example, a lighting module comprising an LED circuit board can be arranged on the side of the mounting body facing away from the interior, so that when the luminaire is in its intended operating state, the LEDs emit light from this side of the mounting body in the direction away from the interior. The mounting rail has a mounting rail base extending in a transverse direction between two mounting rail side walls and an open side opposite the mounting rail base in a vertical direction, wherein the U-shaped cross-section of the mounting rail is formed by the mounting rail base and the mounting rail side walls. Accordingly, the mounting rail side walls extend away from the mounting rail base in the vertical direction. When the system is in operation, the mounting bodies are arranged one behind the other in the longitudinal direction on the open side of the mounting rail and are fixed to the mounting rail and, together with the mounting rail, enclose an interior space.The operating state is generally defined by a specific arrangement of the system components. When the system is used to create a luminaire, the system is in the operating state once the luminaire has been created. According to the proposed solution, the system comprises a sealing device which, in the operating state, is arranged between two longitudinally adjacent mounting bodies and which has two sealing surfaces. Each of these two sealing surfaces is assigned to exactly one of the two longitudinally adjacent mounting bodies. The two sealing surfaces are thus each assigned to a different one of the two mounting bodies. The two sealing surfaces are preferably spaced apart from one another in the longitudinal direction. The two sealing surfaces preferably each form a longitudinal side of the sealing device.Generally speaking, the sealing surfaces each preferably have a partial surface, wherein the partial surfaces of the sealing surfaces point away from one another along the longitudinal direction and in particular form at least a section of a respective longitudinal end of the sealing device. The sealing engagement of the respective sealing section with the sealing surface assigned to it prevents dust and / or water from penetrating into the interior from the outside between the sealing section and the sealing surface during operation. Such sealing engagement of the sealing section with the sealing surface preferably ensures that, at the level of the engagement between the sealing section and the sealing surface, the interior is sealed against the environment in accordance with IP50, in particular IP54, in particular IP64, solely by the engagement of the sealing section with the sealing surface. In the present case, the sealing connection or engagement of two elements generally refers to sealing in this sense.According to a solution according to the invention, each of the support rail side walls has a holding section on its side facing the respective opposite support rail side wall. In the operating state, the sealing device is fixed to the holding sections, defining a transverse relative position of the support rail side walls to one another at the level of their holding sections. The holding sections are thus provided on the two sides of the two support rail side walls that are opposite one another with respect to the transverse direction, and the sealing device is designed to correspond to the holding sections of the two support rail side walls.The sealing device thus has a holding device corresponding to the holding sections of the two support rail side walls, and in the operating state, the holding device and holding sections engage with one another in such a way that the interlocking of the holding device and holding sections determines the transverse relative position of the holding sections of the support rail side walls to one another and thus the transverse relative position of the support rail side walls to one another at the level of the engagement of the holding device in the holding sections. The design of the sealing device according to the invention, corresponding to the support rail, thus effectively prevents bending of the support rail, i.e., an increase in a transverse distance between the support rail side walls starting from a rest position of the support rail in the operating state.This can effectively prevent the open side of the support rail from widening, and thus the formation of gaps between the support rail side walls and, for example, the sealing device and / or mounting body during operation can be prevented, thus ensuring particularly reliable sealing of the interior during operation. It should be noted that, when used as intended, support rails of a system according to the invention are subjected to considerable forces, for example, as a result of loading a mounting body attached to the support rail and / or as a result of loading a suspension of the support rail, for example, when the support rail is suspended from a ceiling and, in particular, the ceiling experiences movement.The formation of slots and thus the risk of leaks can be effectively prevented by providing the corresponding sealing device, without requiring costly and time-consuming measures during the implementation of the support rail or during the installation of the mounting body or sealing device. For example, this allows the support rail to be manufactured from a thin sheet metal even when relatively long support rail side walls are provided, and this eliminates the need for complicated undercuts between the mounting body and the support rail.

[0013] Generally preferably, the support rail is produced from sheet metal by forming. Generally preferably, the holding sections are spaced vertically from the support rail base by at least 70% of a vertical height of the support rail, i.e., the entire extension of the support rail in the vertical direction. This makes it possible, on the one hand, to provide the largest possible clear cross-section of an interior space, and, on the other hand, by determining the transverse distance between the support rail side walls at the level of their holding sections, bending of the support rail can be particularly effectively prevented. Generally preferably, the support rail has a vertical height of at least 5 cm, in particular at least 7 cm.According to a further solution according to the invention, the sealing device has the sealing surfaces explained and is arranged, as explained above, between two mounting bodies adjacent in the longitudinal direction, wherein a sealing section is provided on each of the adjacent mounting bodies, via which sealing section it rests on the sealing surface of the sealing device assigned to it in the operating state, wherein in this solution, however, only preferably, as explained for the above solution according to the invention, the sealing device is fixed to the holding sections by determining the transverse relative position of the support rail side walls to one another at the level of their holding sections or has the relevant advantageous features described here, wherein to implement this solution, for example, the sealing device can only comprise the web element explained below, but not the fixing element.This solution according to the invention can of course also have features which are explained here in connection with sealing surfaces or the sealing device as a whole.

[0014] In one embodiment, in the operating state, the sealing device engages behind each of the holding sections, determining their transverse relative position to one another. By engaging behind, the sealing device thus provides stops for the holding sections, wherein the provision of these stops prevents the holding sections from moving apart along the transverse direction. In general, by fixing the sealing device to the holding sections, the transverse relative position of the holding sections and thus of the support rail side walls to one another at the level of their holding sections is fixed at least in such a way that the fixing establishes a maximum transverse distance between the holding sections.Particularly preferably, both a maximum and a minimum transverse distance between the holding sections are defined by fixing the sealing device to the holding sections, so that, due to the fixing, the holding sections cannot move towards or away from one another with respect to the transverse direction during expected intended use of the system. In one embodiment, the support rail side walls each have a recess, wherein the holding sections of the support rail side walls are each formed at least in sections by a transverse boundary of the recess, wherein the sealing device each has a fixing region in its two transverse end regions, wherein, in the operating state, each of the fixing regions is arranged in one of the recesses assigned to it.Since the holding sections are formed at least in sections by a transverse boundary of the respective recess, the holding sections directly border the recess. The recess is preferably a recess running perpendicular to the transverse direction, so that by arranging the fixing regions in the recesses, the transverse relative position of the support rail side walls can be fixed particularly effectively. Particularly preferably, in the operating state, the fixing regions each bear against a section of the support rail side walls that delimits the recess on its side facing the opposite side wall along the transverse direction, so that this bearing prevents the holding sections or the support rail side walls from moving apart at the level of the holding sections, relative to the transverse direction.The fixing areas can form the holding device explained above or at least be encompassed by it. The holding sections can each be formed by deforming the support rail side walls, which also form the respective recess.

[0015] In one embodiment, the sealing device, in the operating state, rests against both a vertical top side and a vertical bottom side of the holding sections, each with a contact area. The sealing device thus comprises four contact areas, two of which are assigned to exactly one of the holding sections, wherein of the two contact areas assigned to the respective holding section, one rests against the top side and one against the bottom side of the holding section. By resting against the top and bottom side of both holding sections, particularly good stabilization and, in particular, sealing is possible. The contact areas can be encompassed by the holding device explained above. The contact areas are particularly preferably arranged between fixing areas of the sealing device with respect to the transverse direction. The fixing areas can be designed as explained above.In the operating state, the sealing device preferably engages behind the holding sections with the fixing areas, preventing the holding sections of the support rail side walls from moving apart in the transverse direction. By arranging the contact areas between the fixing areas and thus between the two transverse areas with which the sealing device engages behind the holding sections or is arranged in the recess, the contact areas can contribute particularly advantageously to sealing.

[0016] In one embodiment, the sealing device has spring regions with which it rests on the upper side of the holding sections in the operating state and presses against them with a spring force. Particularly preferably, each of the spring regions forms one of the contact regions. The spring force preferably has at least one directional component along the vertical direction, so that the respective spring region presses against the respective holding section from above due to the spring force along the vertical direction. The spring regions are generally preferably designed to be spring-elastic in the vertical direction. Particularly preferably, the spring regions are designed to be spring-elastic in both the vertical and transverse directions. This can particularly simplify the implementation of the operating state, i.e. a proper arrangement of the components of the system relative to one another, and furthermore, sealing can be particularly advantageously ensured.Particularly preferably, the sealing device is supported by a section on the support rail so that the spring force can be exerted. Particularly preferably, the sealing device has counter regions with which it rests on the underside of the holding sections and presses against them in the operating state. Each of the counter regions preferably forms one of the contact regions explained above. Preferably, one of the counter regions together with one of the spring regions forms a pair of contact regions, wherein the spring region forms the contact region resting on the upper side and the counter region forms the contact region resting on the underside, and thus the holding section which is assigned to this pair of spring region and counter region is held pressed between the counter region and the spring region. This enables particularly good fixing of the sealing device to the support rail and / or sealing by means of the sealing device.Particularly preferably, the spring regions have a significantly greater vertical extent than the counter regions. Due to the large vertical extent of the spring regions, their spring elasticity can be provided particularly simply and advantageously. Preferably, the spring regions are designed as a spring arm made of a plastic. Particularly preferably, the counter regions are designed to be stiffer in the vertical direction than the spring regions; particularly preferably, the spring regions are elastic in the vertical direction, whereas the counter regions are rigid in the vertical direction. Preferably, the spring regions and counter regions are formed by a single, self-contained component of the sealing device, wherein this component has a greater material thickness within the counter regions than within the spring regions.Particularly preferably, the counter-regions press against the respective holding sections assigned to them both in the vertical direction and in the transverse direction. Particularly preferably, the counter-regions, with respect to the transverse direction, only bear against the holding sections at those points that are closer to the transverse center of the support rail than those points on the holding sections against which the fixing regions of the sealing device bear. Particularly preferably, the spring regions, with respect to the transverse direction, only bear against the holding sections at those points that are closer to the transverse center of the support rail than those points on the holding sections against which the fixing regions of the sealing device bear.By arranging the contact points of counter-regions and / or spring regions between the fixing regions with respect to the transverse direction, the fixing regions can ensure that the shape of the support rail is fixed, whereas counter-regions or spring regions can ensure that the sealing device rests against the support rail or seals against it. Particularly preferably, each of the holding sections has a contact region which, with respect to the transverse direction, is arranged next to the recess assigned to the respective holding section and is closer to the transverse center of the support rail than the recess, wherein the spring regions and / or counter-regions are supported on this contact region or rest on this contact region, in particular exclusively on this contact region.

[0017] In one embodiment, the sealing device has sealing webs, each of the sealing webs being assigned to one of the counter-regions and spaced therefrom. While the counter-region is intended to be pressed against the underside of one of the holding sections of the support rail in the operating state and thus functionally contributes to the fastening of the sealing device to the support rail, in particular in the explained interaction with the respectively assigned spring region, the sealing web serves to provide a barrier that counteracts the penetration of dust from an environment into the interior. By spaced the sealing web from the counter-region, the sealing web and counter-region can fulfill their respective functions particularly advantageously. Generally speaking, the counter-region and sealing web are preferably formed integrally from a single component that is part of the sealing device or forms it.For example, in one embodiment, the component can be the web element explained here. Generally preferably, the counter region and the sealing web run over the same longitudinal section. Generally preferably, the sealing web extends over at least 70%, in particular at least 90%, in particular at least 100% of the longitudinal extent of the counter region, in particular beyond the counter region on both longitudinal sides thereof. In one embodiment, in the operating state, one of the holding sections of the support rail is arranged at least in sections between one of the counter regions and the sealing web assigned to it. By the holding section extending at least in sections between the sealing web and the counter region, for example, a fixation can be ensured at the same time by the counter region on this holding section and a dust barrier can be provided by the sealing web in interaction with the holding section.Generally, each sealing ridge preferably extends vertically above its associated mating portion, at least in sections. This can particularly advantageously ensure that the mating portion presses vertically against the holding portion from below, while the sealing ridge above it at least contributes to providing a dust barrier.

[0018] In one embodiment, the sealing surfaces of the sealing device each comprise at least one partial surface, in particular a plurality of partial surfaces. In one embodiment, the sealing surfaces can thus each be formed by one of the partial surfaces described below; in another embodiment, the sealing surfaces are formed by a plurality of partial surfaces, at least some of which can be designed as explained below. The sealing surfaces are preferably formed by the partial surfaces explained below. In one embodiment, the sealing surfaces each comprise a partial surface running in the longitudinal direction, wherein the sealing section provided on each of the adjacent mounting bodies bears sealingly against a respective one of these partial surfaces assigned to it. As explained above, exactly one of the sealing surfaces is assigned to each of the adjacent mounting bodies.By virtue of the sealing section provided on the respective mounting body bearing against the partial surface that runs in the longitudinal direction, the sealing section can move longitudinally relative to the sealing device without impairing the sealing engagement, since the sealing section can move along the longitudinal extent of said partial surface in sealing engagement therewith. Generally speaking, in the operating state, longitudinal play is preferably provided between each of the sealing sections and the sealing device in such a way that the two mounting bodies, with the sealing sections provided on them, can move longitudinally relative to one another, while the sealing device and thus its sealing surface remain unchanged in one position, and the sealing sections provided on both mounting bodies continuously bear sealingly against the partial surface assigned to them.The sealing device is preferably fixed in a fixed position relative to the support rail in the longitudinal direction, whereas the adjacent mounting bodies can move in the longitudinal direction relative to the support rail. This allows for, on the one hand, longitudinal movement of the mounting bodies relative to the support rail due to thermal expansion and, on the other hand, particularly easy installation of the mounting bodies on the support rail. This is because a seal between the two adjacent mounting bodies by means of the sealing device is ensured over a certain range of movement of the mounting bodies in the longitudinal direction. Particularly preferably, each of the two partial surfaces running in the longitudinal direction extends over at least 5 mm, in particular at least 10 mm along the longitudinal direction.Particularly preferably, each of the two partial surfaces runs at an angle between 70° and 110°, in particular between 80° and 100°, in particular perpendicular to the vertical direction. This can ensure particularly reliable contact of the sealing section over a substantial portion of the longitudinal extension length of said partial surface. Particularly preferably, the mounting bodies, the sealing sections provided on them, the support rail and the sealing device are designed to correspond to one another in such a way that, over a range of movement, related to the longitudinal direction, of at least 2 mm, in particular at least 3 mm, in particular at least 5 mm, in particular at least 7 mm, in particular at least 10 mm of the mounting bodies, a sealing contact of the sealing section against said partial surface running in the longitudinal direction is always ensured in the operating state.Preferably, said longitudinally extending partial surface extends uninterruptedly across the entire transverse spacing of the support rail's holding sections over its entire longitudinal extension. It should be noted at this point that, of course, the advantageous properties described here with reference to a partial surface can also be provided for other partial surfaces. In one embodiment, the sealing surfaces of the sealing device each have a partial surface extending in the vertical direction, wherein these vertically extending partial surfaces each extend over the same vertical extension area and are vertically spaced from the support rail base.In the operating state, the partial surfaces running in the vertical direction preferably lie directly against the sealing section of the respective mounting body or are spaced from it by less than 3 mm, in particular less than 2 mm, in particular less than 1 mm. By providing the partial surfaces running in the vertical direction, any gap that may form between the mounting bodies is thus reduced as far as possible. By both partial surfaces running in the vertical direction extending over the same vertical extent, the mounting bodies can be arranged at the same vertical height on the partial surfaces assigned to them, so that, for example, the mounting bodies can press against the respective partial surfaces when directly lying against the partial surfaces and can thus press against each other indirectly via the sealing device.Particularly preferably, the partial surfaces running in the vertical direction are spaced from the support rail base by at least 70% of the vertical height of the support rail, i.e. their entire vertical extent. This allows a sufficiently large internal space to be provided between the support rail base and the partial surfaces. With the advantageous provision of partial surfaces running in the longitudinal direction, these partial surfaces running in the longitudinal direction are preferably also spaced from the support rail base by at least 70% of the vertical height of the support rail. Generally speaking, the sealing device is preferably spaced from the support rail base by at least 70% of the entire vertical extension of the support rail, i.e. its vertical height, over at least 70%, in particular at least 80%, of its transverse extension in the operating state. The focus here is on the entire transverse extension of the sealing device.

[0019] Generally preferably, the sealing device is continuously spaced from the support rail base by at least 70% of the vertical height of the support rail over at least 90% of the transverse length of the distance between the holding sections in the operating state.

[0020] In one embodiment, the sealing device has a web element and a fixing element, wherein the web element forms at least a predominant part of at least one partial area of ​​each of the sealing surfaces. Particularly preferably, the web element completely forms both sealing surfaces. The fixing element preferably forms the above-explained fixing regions of the sealing device and / or engages behind the holding sections of the support rail side walls in the operating state, determining their transverse relative position to one another, as explained above. In that the sealing device firstly has the web element, which forms at least a predominant part of a partial area of ​​the respective sealing surfaces or a predominant part of the two sealing surfaces orwhich forms the two sealing surfaces, and on the other hand a fixing element which serves to determine the transverse relative position of the holding sections and thus of the support rail side walls at the level of the holding sections, each of the two elements can be specifically designed for its purpose. Particularly preferably, the web element and the fixing element are manufactured independently of one another and thus designed as separately manufactured components. Particularly preferably, the fixing element is detachably connectable to the web element to realize the operating state. Particularly preferably, starting from the operating state, the fixing element is detachable from the support rail and from the web element without changing a relative position of the web element relative to the support rail.Particularly preferably, to implement the operating state, the web element can first be fixed to the support rail independently of the fixing element, wherein to implement the operating state, the fixing element can then be fixed to the support rail and can be fixed relative to the web element at least by means of the support rail. In one embodiment, the fixing element and web element are each produced as a plastic part, in particular as an injection-molded part. In one embodiment, the fixing element and web element are made from the same material. In one embodiment, the fixing element is made from a harder material than the web element. In one embodiment, the web element is designed to be elastic, whereas the fixing element is designed to be rigid. In one embodiment, the fixing element is designed in the manner of a trough that is vertically open at the top or bottom and has fixing regions that project vertically downwards.This allows the fixing element to be designed with a particularly simple and material-saving design, while also being sufficiently robust. The fixing areas can be provided on the two transverse sides of the tub.

[0021] In a simplified solution, the sealing device can comprise only the web element, which in this case comprises all the sealing surfaces of the sealing device. The fixing element is then preferably provided only as a further advantageous measure. The web element can have the advantageous properties described here with reference to the web element or with reference to the sealing device, for example, in connection with contact areas, spring areas, counter areas, sealing or partial surfaces.In one embodiment, the system comprises several pairs of longitudinally adjacent mounting bodies, wherein the pairs are divided into two types of pairs: In the first type of pair, a sealing device is arranged between each of the two adjacent mounting bodies of the pair. This sealing device not only has the sealing surfaces explained but is also fixed in the operating state to the holding sections, defining the transverse relative position of the support rail side walls to one another at the level of their holding sections. For example, the sealing device arranged between the adjacent mounting bodies of such a first type of pair on adjacent mounting bodies comprises a web element and a fixing element.In the second type of pairs, the sealing device arranged between the adjacent mounting bodies of the pair has the sealing surfaces explained, without being designed to be fixed in the operating state to the holding sections by determining the transverse relative position of the support rail side walls to one another at the level of their holding sections.

[0022] For example, the sealing device arranged between the adjacent mounting bodies of the second type of pair comprises only the described web element, but not the fixing element. In the described embodiment, two longitudinally adjacent mounting bodies are thus always sealed to one another via a sealing contact on the respective sealing surface of the sealing device arranged between them or the web element arranged between them, whereas only some of the sealing devices determine the transverse relative position of the support rail side walls in the operating state. This can reduce the costs of producing luminaires and, moreover, can adequately prevent the support rail side walls from bending open in many applications.For example, in the case of mounting bodies which are arranged with their longitudinal sides facing one another within the longitudinal extension of a coupling, a sufficient fixing of the transverse relative position of the support rail side walls may already have been effected by the coupling, so that the sealing device arranged between these mounting bodies does not have to bring about any further fixing of the support rail side walls.For example, the support rail can have a recess on each of its support rail side walls running in the longitudinal direction, as explained above, wherein the coupling is arranged in a longitudinal section of this recess and within this longitudinal section a sealing device provided within the framework of the simplified solution is arranged between two mounting bodies, which sealing device therefore preferably does not extend into the recesses of the support rail side walls, and wherein in a longitudinal section of the recesses spaced apart from the coupling, a further sealing device is arranged between two further mounting bodies and is arranged with its explained fixing regions in the recess, determining the transverse relative position of the support rail side walls to one another.In one embodiment, only one web element, but not a fixing element, is arranged between such longitudinally adjacent mounting bodies whose mutually facing longitudinal sides are arranged within the longitudinal extension of a coupling of the system in the operating state of the system, whereas in at least a plurality, in particular the majority, in particular all pairs of longitudinally adjacent mounting bodies whose mutually facing longitudinal sides are not located within the longitudinal extension of a coupling of the system, a web element and a fixing element are arranged as a sealing device.

[0023] In one embodiment, the web element forms the partial surface running in the longitudinal direction and / or the vertical direction, wherein the fixing element, in the operating state, is arranged vertically above the respective partial surface within the transverse extent of the respective partial surface, i.e. the partial surface running in the longitudinal direction and / or the vertical direction, and engages behind the holding sections outside the transverse extent of the respective partial surface. The web element can thus effect a fixing without hindering sealing contact of the sealing section with the respective partial surface. Particularly preferably, the web element has a cross-section running perpendicular to the transverse direction, which is designed in the manner of a T-shape. By providing such a T-like cross-section of the web element, the sealing surfaces, in particular comprising the partial surfaces, can be provided particularly simply and effectively.Particularly preferably, the T-shaped cross-section has a crossbeam which runs parallel to the longitudinal direction and a bar perpendicular thereto which runs parallel to the vertical direction, wherein the partial surfaces running in the longitudinal direction are formed by the crossbeam and the partial surfaces running in the vertical direction are formed by the bar running perpendicular thereto.

[0024] In one embodiment, the fixing element runs within the

[0025] Longitudinal extension of the web element and is spaced from both longitudinal ends of the web element. Preferably, the web element has a greater longitudinal extension length than the fixing element.

[0026] Preferably, the fixing element runs exclusively within the longitudinal extent of the web element, i.e., with respect to the longitudinal direction, the fixing element does not protrude beyond the web element. In one embodiment, the web element runs within the transverse extent of the fixing element and is spaced from both transverse ends of the fixing element. Preferably, the fixing element has a greater transverse extension length than the web element. Preferably, the web element runs exclusively within the transverse extent of the fixing element, i.e., with respect to the transverse direction, the web element does not protrude beyond the fixing element; preferably, the fixing element protrudes beyond the web element on both sides with respect to the transverse direction. By spacing the fixing element from the longitudinal ends and / or transverse ends of the web element, the web element can be brought into contact with the support rail side walls in a particularly advantageous manner.Particularly preferably, the web element rests, in particular sealingly, with one edge sealing surface on a vertical underside of each of the holding sections and with two holding regions spaced apart from one another in the longitudinal direction on a vertical upper side of each of the holding sections. The sealing contact inhibits at least the propagation of dust beyond the corresponding contact surface, which can contribute to the most dust-tight sealing of the interior space. The edge sealing surface is preferably formed by the counter regions explained above, and the holding regions are preferably formed by the spring regions explained above. Each of the edge sealing surfaces is preferably formed by a respective longitudinal end of the web element. The sealing contact of the edge sealing surface on the underside can ensure particularly reliable sealing.Particularly preferably, each of the edge sealing surfaces is assigned to two holding regions spaced apart from one another in the longitudinal direction and is arranged between these in relation to the longitudinal direction, such that the holding regions can ensure particularly reliable pressing of the edge sealing surface against the underside, since they enable a counterforce to be exerted on the holding section from the top side on both sides of the edge sealing surface, while the edge sealing surface is held pressed against the underside of the holding section with a pressing force from below. Particularly preferably, in the operating state, the fixing element is arranged in the longitudinal direction between the holding regions or spring regions. Each of the holding sections is assigned a pair of holding regions spaced apart from one another in the longitudinal direction, and the fixing element is preferably arranged between the holding regions of each pair.This ensures space-saving and reliable fixation of the entire sealing device to ensure adequate sealing.

[0027] In one embodiment, the web element forms the spring regions explained above. In one embodiment, the web element forms the counter regions explained above. Generally preferably, the web element has at least one of the spring regions and one of the counter regions on each of its two transverse sides. Generally preferably, the spring region has spring arms running in the vertical direction and transverse direction. Generally preferably, in the operating state, the counter region rests on the holding section arranged on the respective transverse side of the web element, in particular on an arc formed by the holding section arranged on the respective transverse side of the web element, i.e. on an arc formed by the holding section which is assigned to the respective transverse side of the web element. Generally preferably, the counter region is rod-shaped.The arch runs in an arc around an axis running parallel to the longitudinal direction, wherein a rod-like design of the counter region and the contact against the arch can ensure contact both in the vertical direction and in the transverse direction. Due to the rod-like design of the counter region, the counter region is formed continuously along the longitudinal direction. For example, the counter region can be designed in the manner of a cylinder, which extends with its cylinder axis along the longitudinal direction; for example, the counter region can be designed in the manner of a plate, in particular in the manner of a curved plate, which extends with its plate surface along the longitudinal direction. Generally preferably, the counter region has the same cross-section perpendicular to the longitudinal direction over at least 50%, in particular at least 70% of its extension length along the longitudinal direction.

[0028] In one embodiment, the fixing element has recesses, each of which is assigned to one of the sealing webs explained here and is preferably provided, or to a tab web explained here for embodiments and is preferably provided on a mounting body. As the fixing element thus forms recesses for a dust barrier formed by a body, the fixing element with its recesses, in interaction with this body, can particularly advantageously contribute to dust-tightness. The sealing webs and / or the tab webs can function as such a body. The recesses are preferably provided as recesses that are open in the vertical direction, so that in the operating state the sealing web or tab web dips vertically into the recess. The recesses preferably have a U-shaped cross-section, wherein in the operating state the sealing web orThe tab web extends from the open end of the U-shaped cross-section opposite the U-shaped base into the recess towards the U-shaped base, thus providing a particularly advantageous dust barrier. In general, in the operating state, the sealing web assigned to the respective recess or the tab web assigned to the respective recess is preferably arranged in each recess of the fixing element. In one embodiment, the fixing element is arranged along the longitudinal direction between the spring regions. This can ensure stabilization of the geometry of the support rail between the spring regions, whereby the spring regions can be supported on the support rail in a particularly defined manner, which can make a particularly advantageous contribution to sealing the interior in the operating state. In one embodiment, the fixing element runs within the same longitudinal section within which the counter regions run.Preferably, the fixing element and the counter-regions extend within a single longitudinal section for at least 50% of their respective longitudinal extension length. In the operating state, the fixing element preferably extends within a single longitudinal section within which the sealing webs extend. Preferably, the fixing element and the sealing webs extend within a single longitudinal section for at least 50% of their respective longitudinal extension length.

[0029] As a solution to the problem underlying the invention, the invention proposes a system comprising a plurality of mounting bodies and at least one support rail. The system is designed to realize a longitudinally elongated luminaire. The support rail has a U-shaped cross-section. The support rail has a support rail base extending in a transverse direction between two support rail side walls and an open side opposite the support rail base in a vertical direction. The support rail base and support rail side walls form the U-shaped cross-section. Accordingly, the support rail side walls extend away from the support rail base in the vertical direction. In an operating state of the system, the mounting bodies are arranged one behind the other in the longitudinal direction on the open side of the support rail and are fixed to the support rail and, together with the support rail, enclose an interior space.The mounting bodies each have a mounting body base that extends in the transverse direction between two mounting body side walls. The mounting body thus has a U-shaped cross-section that is formed by the mounting body base and the mounting body side walls, wherein the mounting body side walls extend away from the mounting body base with respect to the vertical direction. Each of the support rail side walls has a holding section on its side facing the opposite support rail side wall. In the operating state, the mounting bodies are fixed to the holding sections. On the mutually facing longitudinal sides of two longitudinally adjacent mounting bodies, a sealing device is provided, by means of which the adjacent mounting bodies are sealed against each other in the operating state. The sealing device assigned to the respective mounting body, iethe sealing device provided on the respective mounting body forms a sealing section, which is thus a sealing section provided on the respective mounting body. The adjacent mounting bodies are pressed together in a sealing manner in the operating state with their sealing sections, i.e. by pressing the sealing sections of the sealing devices assigned to the mounting bodies, a seal between the sealing devices and thus between the mounting bodies is ensured. Each of the sealing devices further has, in addition to the sealing section, a base section and a side section. In one embodiment, the respective sealing device presses with its base section against the mounting body base of the mounting body on which it is provided, and with its side section it presses against the mounting body side walls of the mounting body.Thus, according to the invention, it is particularly advantageous that a sealing device is provided on each mounting body, which, on the one hand, by means of its side section and its base section, sealingly abuts the mounting body side walls and the mounting body base, and, on the other hand, by means of its sealing section, ensures a sealing engagement with the adjacent mounting body. The sealing engagement or pressing of the sealing sections together can occur directly or indirectly, for example, by means of a sealing device as explained here, which is arranged between the sealing devices.The sealing devices are preferably pressed together at least by each of the sealing devices pressing, in particular vertically, in particular in the same direction along the vertical direction, against a respective sealing surface of a sealing device, such that the pressing of the two sealing devices against the sealing device ensures a seal between the sealing devices and, via this, between the mounting bodies. The side section of the sealing device is assigned to both mounting body side walls of the mounting body assigned to it. The side section can have two subsections spaced apart from one another in the transverse direction, each of which is assigned to exactly one of the mounting body side walls. In one embodiment, each of the sealing devices extends with an overhang section above a side of the mounting body side walls facing away from the mounting body base, overhanging said side walls.In this way, particularly good sealing and fixing of the sealing device relative to the mounting body assigned to it and / or to a support rail side wall or to the holding section formed by the support rail side wall can be ensured. In the operating state, the sealing device particularly preferably presses with its overhang section in the vertical direction against the holding sections, i.e. on their upper side, and in particular also against the mounting body side walls, i.e. against the side of the mounting body side walls which is furthest away from the mounting body base in the vertical direction. By pressing against the holding sections, the sealing device can ensure fixing of the mounting body assigned to it to the support rail. By pressing against the mounting bodies, the sealing device can ensure particularly good sealing.The overhanging section can, analogously to the side section explained, have two partial sections spaced apart from one another in the transverse direction, each of which is assigned to exactly one of the mounting body side walls.

[0030] Generally, the sealing device is preferably made at least in sections from an elastic material, in particular from an elastic plastic, wherein the sealing section, the side section, and the base section, and furthermore in particular also at least part of the overhang section, which in particular rests against the holding sections in the operating state, are made from this material. In one embodiment, the sealing device has a sealing element and a stabilizing element, wherein the sealing element forms the sealing section, the base section, and the side section and encloses the stabilizing element at least in sections, wherein the stabilizing element is made of a harder material than the sealing element.By implementing the sealing device as comprising a sealing element and a stabilizing element, the sealing element can be designed specifically to ensure a sealing connection with the mounting body assigned to it and in particular directly or indirectly with the adjacent mounting body, whereas the stabilizing element can ensure sufficient rigidity of the sealing device regardless of the material of the sealing element being optimized for sealing. Particularly preferably, the sealing element and / or the stabilizing element is made of plastic, in particular by means of an injection molding process, i.e. by injection molding. In one embodiment, the stabilizing element and the sealing element are manufactured as separate components independently of one another and can then be connected to one another. In another.

[0031] In one embodiment, the stabilizing element and sealing element are manufactured using a 2K injection molding process. Particularly preferably, the sealing element is manufactured by overmolding the stabilizing element with a softer plastic. Particularly preferably, the material from which the stabilizing element is made has a higher modulus of elasticity than the material from which the sealing element is made. In particular, the modulus of elasticity of the material from which the stabilizing element is made is at least twice, in particular at least three times, in particular at least four times the modulus of elasticity from which the sealing element is made.

[0032] In one embodiment, the sealing element and the stabilizing element have mutually corresponding, longitudinally extending guide rails that are arranged in an interlocking manner and extend over at least 30%, in particular over at least 50%, of the entire longitudinal extent of the sealing device. The guide rails of the sealing element and the stabilizing element can be provided both in embodiments in which the sealing element and the stabilizing element are initially manufactured separately from one another, and in embodiments in which the sealing element and the stabilizing element are manufactured in a common manufacturing process, for example, a 2K injection molding process.It is essential for the provision of guide rails that the guide rails of the sealing element and the stabilizing element interlock and extend over a significant portion, for example, as stated above in percentage terms, particularly preferably over at least 70%, preferably over at least 80% of the entire longitudinal extent of the sealing device, since this allows for particularly advantageous stabilization of the sealing device. In one embodiment, the guide rails of the stabilizing element and the sealing element can be pushed into one another in the longitudinal direction to create the sealing device.

[0033] In one embodiment, the stabilizing element forms at least a portion of the overhanging section that is resilient in the vertical and transverse directions. As a result, the overhanging section can be particularly advantageously used for fixing to the support rail by pressing vertically and, in particular, transversely, against the holding sections of the support rail during operation through the resilient portion formed by the stabilizing element. Preferably, the stabilizing element vertically overlaps the sealing element with the aforementioned portion of the overhanging section formed by it, so that the stabilizing element vertically overlaps the sealing element to form at least a portion of the overhanging section. The stabilizing element thus preferably forms a portion of the overhanging section with which, on the one hand, it vertically overlaps the sealing element and, on the other hand, is resilient, as explained.With this part of the overhanging section, the stabilizing element is thus arranged on the sealing element in the operating state on a side of the sealing element facing away from the mounting body base with respect to the vertical direction. The provision of such a part of the overhanging section formed by the stabilizing element is therefore particularly advantageous for a reliable seal between the sealing device and the mounting body, since this part of the overhanging section can exert a contact pressure on the sealing element against the mounting body side walls. By being designed to be spring-elastic in the transverse and vertical directions, the overhanging section can be easily actuated to implement the operating state and assume the position required in the operating state and, in particular, can be actuated to release the sealing device from the mounting body starting from the operating state.

[0034] In one embodiment, the overhanging section has a fastening section which is at least partially, in particular at least predominantly, in particular completely, formed by the stabilizing element and which, in the operating state, presses the holding sections of the support rails against them, ensuring that the mounting body is fixed to the support rail. The fastening section is thus precisely the part of the overhanging section which, in the operating state, presses the holding sections of the support rail against them, so that the fixing of the mounting body relative to the support rail, in relation to the vertical direction and advantageously provided by the sealing device, is ensured by the fastening section. In one embodiment, the fastening section has a spring section and a contact section.In the operating state, the fastening section presses with the contact section against the holding section of the support rail assigned to it with a vertical and, in particular, transverse pressing force. A vertical pressing force is a pressing force that has a vertical component, while a transverse pressing force is a pressing force that has a transverse component. A vertical and transverse pressing force therefore has both a vertical and a transverse component. The vertical component of the pressing force is preferably greater than the transverse component of the pressing force. In general, the fastening section preferably presses against the holding sections exclusively with the contact section, so that the pressing of the contact section against the holding sections provides the described fixation of the mounting body to the support rail by the sealing device. The contact section is preferably formed by the stabilizing element.The contact section and the spring section preferably each have two side spring sections or side contact sections, wherein each side spring section or each side contact section is assigned to exactly one holding section of the support rail and thus to exactly one support rail side wall and interacts with this holding section in the operating state as explained. By forming the contact section by the stabilizing element, a sufficiently high pressing force can be provided by the contact section for reliably fixing the mounting body to the support rail. Furthermore, it is preferably provided that the friction coefficient between the material from which the sealing element is made and the material from which the support rail is made orthe holding sections are made of, is greater than the coefficient of friction between the material from which the stabilizing element is made and the material from which the support rail or the holding sections are made. By forming the contact section by the stabilizing element, not only can a high pressing force be provided with which the contact section presses against the holding sections, but moreover, friction between the contact section and the holding sections can also be reduced, so that when a sufficiently large vertical relative force is applied between the mounting body and the support rail, starting from the operating state, the mounting body can be removed from the support rail along the vertical direction without the sealing device or the fastening section of the sealing device needing to be actuated for this purpose.In one embodiment, the contact section is designed as an inclined surface section so that in the operating state it increasingly transversely overlaps the holding section assigned to it along the vertical direction towards the support rail base. By designing it as an inclined surface section, assembly and / or disassembly of the system, i.e. reaching the operating state and / or leaving the operating state, can be particularly advantageously enabled by vertical movement of the mounting body relative to the support rail. An inclined surface section runs with the extension components of its surface, with which it points towards the respective holding section in the operating state, obliquely to the vertical direction and obliquely to the transverse direction so that its surface extends both with a component along the transverse direction and with a component of the vertical direction.Preferably, the inclined surface section runs parallel to the longitudinal direction so that a contact with the holding sections that is as constant as possible over the longitudinal extent of the contact section or inclined surface section can be ensured in the operating state.

[0035] In one embodiment, the spring section has a plurality of partial spring sections arranged one behind the other along the longitudinal direction and spaced apart from one another. By providing the partial spring sections, the spring section can, on the one hand, be designed to be spring-elastic in a cost-effective and advantageous manner, and on the other hand, a sufficiently large spring force can be provided by the spring section, which ensures the explained pressing force in the operating state with which the contact section presses against the holding sections. Preferably, each of the explained side spring sections has a plurality of partial spring sections arranged one behind the other along the longitudinal direction and spaced apart from one another. Preferably, the partial spring sections are connected to one another by a section formed by the stabilizing element. Preferably, the partial spring sections are connected to one another by the contact section.When providing two side spring sections, each comprising a plurality of partial spring sections, the partial spring sections of each side spring section are preferably connected to one another by the side contact section assigned to the respective side spring section. Generally, the stabilizing element preferably forms at least a predominant part of the spring section, in particular the spring section. Generally, the spring section preferably has a U-shaped cross-section, the U-shaped base of which points toward the support rail base in the operating state.

[0036] In one embodiment, the sealing element has at least one engagement portion that engages in a recess formed by the stabilizing element. The recess is preferably provided within the overhanging portion, in particular within the fastening portion. By engaging the sealing element with its at least one engagement portion in the recess formed by the stabilizing element, a particularly robust and permanent connection between the stabilizing element and the sealing element can be ensured. Furthermore, this ensures the best possible interaction between the sealing effect of the sealing element and the fixing effect of the stabilizing element.In one embodiment, the engagement portion comprises a plurality of projection portions arranged one behind the other and spaced apart along the longitudinal direction, and the recess comprises a plurality of recess portions arranged one behind the other and spaced apart along the longitudinal direction, with each of the projection portions being arranged in a respective recess portion. Thus, the engagement portion and recess preferably interlock, which can contribute to a particularly robust and permanent connection between the stabilizing element and the sealing element.

[0037] In one embodiment, in the operating state, the overhanging section, to ensure the fixation of the mounting body to the support rail, rests exclusively on the holding sections by means of a contact surface, wherein the contact surface is completely formed by the stabilizing element. Preferably, the contact is spaced from the sealing element. Preferably, the contact surface is formed by the explained contact section. The contact surface precisely defines the contact area with which the overhanging section or its fastening section rests on the holding sections in order to provide the explained fixation of the mounting body to the support rail, which is advantageously ensured by the sealing device. By having the contact surface completely formed by the stabilizing element, a particularly robust and at the same time detachable contact of the sealing device with the support rail can be ensured.

[0038] In one embodiment, the overhang section has at least two sealing wall sections, each of which is assigned to one of the mounting body side walls. The sealing wall sections can be encompassed by the sealing tab explained here and provided in advantageous embodiments, or can be provided in addition to the sealing tab. Particularly preferably, the two sealing wall sections extend vertically beyond the sealing tab, wherein in the operating state they are preferably arranged closer to the support rail base than the sealing tab. In the operating state, each sealing wall section runs along the longitudinal direction of the mounting body side wall assigned to it, projecting vertically beyond this. Thus, in the operating state, each sealing wall section extends over the same longitudinal section as the mounting body side wall assigned to it, projecting vertically beyond this longitudinal section.The sealing wall sections can thus provide a particularly advantageous barrier against the penetration of dust into the interior. The longitudinal extension length of this longitudinal section is preferably at least 1 cm. In the operating state, each sealing wall section preferably projects beyond the side of the associated holding section facing vertically toward the mounting body base, so that it is spaced closer to the support rail base in the vertical direction than the aforementioned side of the holding section. In particular, it projects vertically beyond the respective holding section, thus extending vertically beyond the holding section as a whole.In one embodiment, the overhanging section has a fastening section which, as explained here for advantageous embodiments, has a spring section and a contact section. The sealing wall sections of the sealing devices, which are provided on the two mounting bodies adjacent in the operating state, extend along the longitudinal direction between the contact section of the respective sealing device and the longitudinal side of the mounting body associated with the sealing device, which longitudinal side faces the adjacent mounting body. Thus, the sealing wall sections can provide a seal between the contact section and the longitudinal side or the longitudinal end of the mounting body facing the adjacent mounting body.Preferably, the contact section of each sealing device is spaced apart from the said longitudinal end of the mounting body assigned to it by a longitudinal distance, wherein the sealing wall sections of the sealing device extend over at least 50%, in particular at least 70%, in particular at least 80%, in particular at least 90% of the longitudinal distance, based on its extension length in the longitudinal direction. In general, the sealing wall sections preferably project vertically beyond the sealing section. While the sealing devices are thus pressed against one another in the operating state by means of their sealing sections to form a seal, their sealing wall sections preferably project vertically beyond their sealing sections in the operating state, so that they can provide a particularly advantageous barrier against the penetration of dust into the interior without necessarily having to bear against the mounting body side wall and / or the support rail side wall.

[0039] Generally, a further part of the overhanging section is preferably formed by the sealing element, whereas the said part of the overhanging section formed by the stabilizing element presses the part of the overhanging section formed by the sealing element in the operating state against the two mounting body side walls and / or against the holding sections assigned to the mounting body side walls.

[0040] Particularly preferably, the part of the overhanging section formed by the stabilizing element has actuating sections which are designed as projections projecting vertically beyond the mounting body side walls. Each of the actuating sections is assigned to precisely one of the mounting body side walls in the operating state and is designed to project beyond this. Thus, the part of the overhanging section formed by the stabilizing element can be compressed particularly easily by means of the actuating sections, relative to the transverse direction, in order to enable the operating state to be reached or to enable the sealing device to be removed from the mounting body from the operating state. Generally preferably, said part of the overhanging section is elastically compressible by means of the actuating sections relative to the transverse direction, in particular elastically compressible by hand without the need for tools.It is elastically compressible based on its state or shape in the operating state. Particularly preferably, the part of the overhanging section formed by the stabilizing element presses the holding sections of the support rail against them in the operating state, ensuring that the mounting body is fixed to the support rail. The part of the overhanging section formed by the stabilizing element can thus be used particularly advantageously for fixing the mounting body to the support rail in the operating state.Particularly preferably, as explained, the sealing element forms a further part of the overhanging section, which, in the operating state, is arranged between the holding section of the support rail and the part of the overhanging section formed by the stabilizing section and is pressed against the holding section by the stabilizing section, so that the part of the overhanging section formed by the stabilizing element presses indirectly against the holding section via the part of the overhanging section formed by the sealing element. This not only ensures particularly good fixation of the mounting body to the support rail in the operating state, but also particularly good sealing.

[0041] In one embodiment, the sealing section has a sealing tab that runs continuously between the mounting body side walls and is vertically spaced from the mounting body base. In particular, it runs over at least 70%, in particular at least 80%, in particular at least 90%, in particular over 100% of the distance provided in the transverse direction between the two mounting body side walls. Particularly preferably, the sealing tab is spaced vertically from the mounting body base by at least 50%, in particular at least 70%, in particular at least 80% of the total vertical extension length, i.e. the vertical height, of the mounting body. Particularly preferably, the sealing tab protrudes beyond the mounting body side walls with its side facing away from the mounting body base with respect to the vertical direction. The sealing tab thus enables particularly advantageous sealing of the mounting body relative to the support rail in the operating state.Particularly preferably, the system comprises a sealing device as explained above, wherein the sealing tab, in the operating state, sealingly abuts a sealing surface, in particular the partial surface of the sealing surface extending in the longitudinal direction. Preferably, the sealing tab sealingly abuts the said sealing surface or partial surface of the said sealing device over at least 70%, in particular at least 80%, in particular at least 90%, in particular 100% of the distance provided between the mounting body side walls with respect to the transverse direction.

[0042] In one embodiment, the sealing section has a sealing lip which, within the vertical extent of the mounting body, runs continuously both along the mounting body base and along the two mounting body side walls in a plane running perpendicular to the longitudinal direction. Preferably, the sealing lip has a linear profile, wherein the line has a first line spacing which runs in the vertical direction and along a first of the mounting body side walls and is followed by a second line section which runs in the transverse direction and along the mounting body base, and is followed by a third line section which runs in the vertical direction and along a second of the mounting body side walls. Generally, the sealing lip preferably forms at least a section of a longitudinal end of an arrangement formed by the mounting body and the sealing device.By the sealing lip forming a section of such a longitudinal end, the sealing lip can ensure a particularly advantageous seal at this longitudinal end of the arrangement. Particularly preferably, the system has a sealing device as explained above with a sealing surface, wherein the sealing lip in the operating state bears sealingly against the sealing surface, in particular against the partial surface of the sealing surface running in the vertical direction. Particularly preferably, the sealing lip extends over at least 70%, in particular at least 80%, in particular at least 90% of the entire transverse extension length of the mounting body and / or over at least 50%, in particular at least 60%, in particular at least 70%, in particular at least 80% of the entire vertical extension length of the mounting body. Particularly preferably, the sealing lip has a cross-section perpendicular to the longitudinal direction, which is designed in the manner of a U-shape.

[0043] Generally, the sealing tab and / or the sealing lip are preferably formed by the sealing element of the sealing device. In one embodiment, the sealing tab is spaced vertically from the sealing lip. Particularly preferably, the sealing tab protrudes beyond the mounting body side walls with its side facing away from the mounting body base in the vertical direction. Generally, the sealing lip extends exclusively within the vertical extent of the mounting body. Generally, the sealing lip extends exclusively within the transverse extent of the mounting body.

[0044] In one embodiment, the sealing tab runs in a serpentine manner within its transverse extension relative to a plane perpendicular to the vertical direction. This serpentine shape allows for particularly reliable contact of the sealing tab with a counter-sealing surface, in particular with a sealing surface of a sealing device as explained above, since the serpentine shape ensures the most uninterrupted contact possible, even with complex geometries. Particularly preferably, the sealing tab runs with its upper end at the same transverse height throughout its serpentine shape.In one embodiment, the sealing tab has transverse end regions which, starting from the respective absolute transverse end of the sealing tab, extend over at least 10%, in particular at least 20%, in particular less than 40%, in particular less than 30%, in particular less than 20% of the total transverse extension length of the sealing device. Particularly preferably, the sealing tab has such a serpentine course exclusively within its transverse end regions. In one embodiment, the sealing tab has transverse end regions, in particular as explained above, and a central region by which the transverse end regions are continuously connected to one another. The entire transverse extension of the sealing tab is thus preferably formed by the transverse end regions and the central region.In one embodiment, the central region extends over at least 60%, in particular at least 70%, in particular at least 80% of the entire transverse extension of the sealing device. In one embodiment, the sealing tab extends in a serpentine manner in its transverse end regions and, throughout its serpentine course, its upper end is at the same vertical height as the central region.

[0045] In this embodiment, the sealing tab extends in a straight line in its central region in a plane perpendicular to the vertical direction. Generally, the sealing tab preferably has its serpentine shape on precisely the side with which it rests against a counter-sealing surface in the operating state, in particular against the sealing surface or partial surface of the sealing surface as explained above.

[0046] In one embodiment, the sealing tab has absolute transverse ends, each formed by a tab web that runs rectilinearly in the plane perpendicular to the vertical direction and / or that projects vertically beyond an adjacent transverse section of the sealing tab. Such a tab web can ensure particularly advantageous sealing. Particularly preferably, the system comprises a sealing device as explained above, which has a receptacle for the tab web. Particularly preferably, the sealing device has a recess for each of the two adjacent mounting bodies, wherein in particular the recesses are separated from one another by a separating web and each of the recesses is provided for receiving the tab web of the sealing device provided on the respective mounting body.The tab web can ensure particularly good lateral sealing of the mounting body relative to the support rail by means of a sealing device and in particular a sealing device.

[0047] In one embodiment, the sealing device comprises, as explained, a fixing element and a web element, wherein the web element comprises sealing webs, wherein each sealing web is assigned to one of the counter-regions of the sealing device and in particular is spaced therefrom, wherein the fixing element has a recess for each of the sealing webs and wherein the sealing device comprises sealing wall sections, wherein in the operating state, each of the sealing webs is arranged in a recess assigned to it and wherein the sealing wall sections run along the longitudinal direction between the sealing web and the contact sections, wherein they cover in particular at least 70%, in particular at least 80%, in particular at least 90% of the longitudinal extension region between the sealing web and the contact section and over at least 70% of the longitudinal extension region, in particular over the entire longitudinal extension region,protrude vertically over the mounting body or its respective mounting body side wall, preferably as already explained above for an embodiment over the respective holding section, towards the support rail base.

[0048] In one embodiment, the mounting body side walls, on their ends facing away from the mounting body base, each have a projection facing downwards towards the mounting body base on their sides facing the respective opposite mounting body wall. Such a projection can be particularly advantageous both for the stability of the mounting body and for fixing components to the mounting body, for example for fixing retaining springs to the mounting body. Particularly preferably, the sealing device, in particular the sealing element of the sealing device, has a receptacle associated with each of the projections, wherein the projections are arranged sealingly against the sealing device in the receptacle associated with them. Generally preferably, the sealing device is held pressed in the vertical direction between the projections formed by the mounting body side walls and the mounting body base.By correspondingly designing the projections of the mounting body side walls and the sealing device, a particularly good fixation and / or sealing of the sealing device relative to the mounting body can be ensured. Generally, the receptacle preferably has two partial receptacles spaced apart from one another along the longitudinal direction. The partial receptacles are preferably spaced apart from one another by at least 50% of the longitudinal extension length of the sealing device. The provision of the partial receptacles can ensure a particularly reliable fixation of the sealing device to the mounting body in the operating state.Particularly preferably, the sealing device comprises the advantageous spring section explained here and the advantageous contact section explained here, wherein the spring section and contact section are arranged at least predominantly, in particular completely, between the two partial receptacles, so that they extend at least predominantly, preferably exclusively, between the two partial receptacles. Preferably, the sealing device further comprises a sealing web which, with respect to the longitudinal direction, is arranged between the partial receptacles, wherein the sealing web, in the operating state, runs along one of the mounting body side walls assigned to it, in particular runs parallel to the mounting body side wall, in particular bears against the mounting body side wall.By providing the sealing web, a distance between the sealing device and the mounting body side walls can be advantageously reduced, which can be advantageous for the seal and / or for the stability of the fixation of the sealing device to the mounting body. Of course, the sealing device preferably has two receptacles, each of the receptacles being assigned to one of the mounting body side walls or the projection formed by the mounting body side wall, wherein the sealing device preferably further has two sealing webs, each of which is assigned to a different mounting body side wall. The receptacles or sealing webs provided on the two transverse sides of the sealing device can be designed as explained, in particular can be designed identically.

[0049] In one embodiment, the system comprises a sealing device as explained here and a sealing device as explained here, wherein in the operating state the sealing devices of the two adjacent mounting bodies bear in a sealing manner against the sealing device which is arranged between the two adjacent mounting bodies in the operating state, wherein the mounting bodies bear with the sealing sections of their sealing devices against one of the sealing surfaces, preferably against both explained partial surfaces of the sealing surface, preferably with their sealing tabs in each case against the partial surface running in the longitudinal direction and with their sealing lips in each case against the partial surface running in the vertical direction. In general, the sealing device particularly preferably has a receptacle for receiving at least part of the sealing tab of the sealing device of the respective mounting body, in particular for receiving the explained tab web.In general, this part of the sealing device, in particular the tab web, is preferably pressed against a boundary of this receptacle formed by the sealing device in the operating state.

[0050] In one embodiment, in the operating state, the contact sections of the sealing devices assigned to the two adjacent mounting bodies are spaced apart from one another along the longitudinal direction by a longitudinal spacing range, wherein the sealing device, in particular at least the fixing element of the sealing device, extends within the longitudinal spacing range. Preferably, the sealing device is enclosed by the spring sections of the two sealing devices on its longitudinal sides, so that the spring section of a first of the sealing devices is arranged at a first longitudinal end of the sealing device and the spring section of a second of the sealing devices is arranged at the second longitudinal end of the sealing device. Preferably, the sealing wall sections each extend within the same longitudinal extension section as the sealing device.Preferably, the sealing wall sections of the two sealing devices are spaced apart from one another along the longitudinal direction, wherein the sealing device extends between the sealing wall sections of the two sealing devices in the operating state and, moreover, overlaps with each of the sealing wall sections of the two sealing devices along the longitudinal directions. Preferably, the sealing wall sections of each sealing device extend, relative to the longitudinal direction, between the sealing web of the sealing device and the contact section of the sealing device from which they are formed.

[0051] In one embodiment, a sealing device is provided on each of at least one of the mounting bodies on its two longitudinal sides. In the operating state, the mounting body is fixed to the support rail in the vertical direction by the overhanging portions of the two sealing devices. Thus, the sealing devices provided on the two longitudinal sides of the mounting body contribute to securing the mounting body to the support rail.

[0052] In one embodiment, at least one of the mounting bodies is held on the support rail by at least two actuatable retaining springs and, in addition, by at least one non-actuatable retaining spring, in particular a plurality of non-actuatable retaining springs. The provision of actuatable retaining springs having elastically deflectable retaining arms, each of which engages behind a retaining section of the support rail in the operating state, thereby holding the mounting body to the support rail, is well known in the art. Such actuatable retaining springs typically have at least one actuating element provided by which at least one of the retaining arms can be elastically deflected along the transverse direction starting from the operating state, after which the mounting body can be easily removed from the support rail along the vertical direction.Such an actuatable retaining spring can, for example, be designed as a retaining spring according to the invention, as explained here. Furthermore, it is advantageous to provide non-actuatable retaining springs, which are designed, for example, as sheet metal springs, in addition to such actuatable retaining springs. Such non-actuatable retaining springs can, for example, provide a lower holding force than actuatable retaining springs. However, the provision of such non-actuatable retaining springs is sensible because the actuation of the actuatable retaining springs requires a corresponding actuation action, and the non-actuatable retaining springs, in addition to the actuatable retaining springs, can provide at least a certain additional holding force, ensuring that a mounting body is held as tightly as possible to the support rail over its entire longitudinal extent, which serves, in particular, to improve sealing.The invention proposes that at least one of the non-actuable retaining springs, or this non-actuable retaining spring if only one non-actuable retaining spring is provided, is formed by a sealing device as explained here. The sealing device, with its overhanging section, thus preferably fulfills the special purpose of ensuring further fixation of the mounting body relative to the support rail in addition to the provided, actuable retaining springs. Particularly preferably, a sealing device is provided on each of the two longitudinal sides of the mounting body, wherein the two sealing devices each form one of the non-actuable retaining springs. In one embodiment, all of the non-actuable retaining springs are formed by the sealing devices; in another embodiment, further non-actuable retaining springs, for example sheet metal springs, are provided in addition to the retaining springs formed by the sealing devices.In one embodiment, the mounting body can be released from the support rail starting from the operating state by actuating the actuatable retaining springs and by applying a vertical force between the support rail and the mounting body to overcome a spring retention force generated by the non-actuatable retaining springs. While the retention force of the actuatable retaining springs can thus be at least reduced, in particular eliminated, starting from the operating state by actuating the actuatable retaining springs, the retention force or spring retention force provided by the non-actuatable retaining springs can be overcome by simply pulling the mounting body vertically away from the support rail.

[0053] In one embodiment, the system comprises a support rail protective cap. In the operating state, one of the mounting bodies points toward the support rail protective cap with one of its longitudinal ends and bears sealingly against the support rail protective cap with a sealing portion of a sealing device provided thereon, as explained herein. The support rail protective cap can have a sealing surface corresponding to the sealing device, as explained above. At its other longitudinal end, the mounting body can be sealed, as explained, from a mounting body provided at this longitudinal end by means of a further sealing device.

[0054] As a solution to the problem underlying the invention, the invention proposes a system having a mounting body and at least one support rail with a U-shaped cross-section. The system is designed to realize a longitudinally elongated luminaire. The support rail has a support rail base extending in a transverse direction between two support rail side walls and an open side opposite the support rail base in a vertical direction. The support rail side walls extend away from the support rail base in the vertical direction. In an operating state of the system, the mounting body is arranged on the open side of the support rail and fixed to the support rail and, together with the support rail, encloses an interior space. The mounting body has a mounting body base that extends in the transverse direction between two mounting body side walls.Each of the support rail side walls has a holding section on its side facing the opposite support rail side wall. In the operating state, the mounting body is fixed to the holding sections. A retaining spring is fixed to the mounting body base between the mounting body side walls, which has a holding arm on each of its two transverse sides that can be resiliently deflected in the transverse direction. In the operating state, each of the holding arms engages behind the holding section of the support rail side wall assigned to the respective holding arm and presses vertically against it, pressing the mounting body side walls against the holding sections to fix the mounting body to the support rail.In the operating state, the holding arms thus rest on the side of the holding sections pointing vertically away from the mounting body base, so that, starting from the operating state, the mounting body can only be released from the support rail if at least one of the holding arms is previously deflected in the transverse direction from its position in the operating state to such an extent that it moves past the holding section assigned to it and thus no longer rests against the vertical side of the holding section facing away from the mounting body base. Generally speaking, the mounting body side walls each have a projection as explained above, wherein the holding spring has a base body which is held in a compressed manner between the mounting body base and the aforementioned projections of the mounting body side walls and which is resiliently deflectable in the transverse direction relative to at least one of the holding arms, in particular both holding arms.In order to enable the mounting body to be removed from the support rail as easily as possible when in the operating state, it is known to provide an opening in at least one of the mounting body side walls through which an actuating element is inserted. This actuating element is connected to one of the holding arms, namely the holding arm assigned to this mounting body side wall which has the opening, to enable deflection of the holding arm in the transverse direction when in the operating state by actuating the actuating element from outside the interior. The actuating element thus extends from outside the interior through the opening into the interior, in which the holding arm is arranged when in the operating state. It is known in the prior art that the transition between the opening and the actuating element poses a risk to the sealing of the interior.It is therefore known in the prior art to provide a seal on the mounting body wall itself and / or to adapt the geometry of the actuating element very precisely to the geometry of the opening in order to prevent the ingress of dirt between the actuating element and the boundary of the opening as far as possible. However, this procedure is disadvantageous for cost-effective production of the mounting body and / or for the simplest possible implementation of the operating state, since a highly precise alignment of the retaining spring relative to the opening is required or a seal must be provided on the mounting body depending on the position of the retaining spring, which is complex. According to the invention, a seal is provided between the actuating element and the opening provided in the mounting body wall, which seal ensures that the actuating element is sealed against the opening in the operating state, wherein the seal is fastened to the holding arm or to the actuating element.The provision of the seal between the actuating element and the opening, or the sealing between the actuating element and the opening, naturally means the provision or sealing between a boundary of the opening formed by the mounting body side wall and the actuating element, wherein the boundary of the opening defines the opening itself, since it completely surrounds or forms the opening. The inventors have found that by providing the seal on the holding arm or on the actuating element, both sufficient sealing can be easily achieved and cost-effective production of the mounting body can be achieved, as well as the operating state being particularly simple. By providing the seal on the holding arm or the actuating element, a tolerance regarding the alignment of the retaining spring relative to the opening can be ensured.In addition, the assembly body can be manufactured without having to consider the provision of a seal, and the seal can be easily implemented in small individual parts, namely the actuating element or the holding arm of the retaining spring.

[0055] In one embodiment, the seal, actuating element, holding arm and mounting body are designed to correspond to one another in such a way that the seal moves relative to the mounting body when the actuating element is actuated. Thus, sealing is only guaranteed in the operating state, i.e. with an arrangement of mounting body, retaining spring and support rail in which the retaining spring ensures that the mounting body is fixed to the support rail by engaging behind the holding section using its holding arm, whereas such sealing no longer necessarily needs to be guaranteed when the holding arm is deflected by actuating the actuating element. The inventors have found that such sealing can be dispensed with, since reliable sealing only needs to be guaranteed in the operating state in which the system is during the intended use of a luminaire manufactured with the system.The inventors therefore deliberately refrained from providing the seal on the mounting body itself, thus avoiding sealing friction between the actuating element and the seal. This is at the expense of the risk that sealing is no longer guaranteed when the actuating element is actuated. This, however, is unproblematic, since such actuation is not to be expected during the intended use of a luminaire manufactured with the system, but rather only during its assembly or maintenance. Particularly preferably, the system is thus designed such that upon such actuation of the actuating element, the seal is at least partially released from the mounting body, thereby breaking the seal.

[0056] In one embodiment, the seal is integrated into the actuating element as a single piece. For example, the seal can be molded onto a base body of the actuating element by means of injection molding, in particular by means of a 2K manufacturing process, and / or can be locked to a base body of the actuating element. Particularly preferably, the base body and seal are each made of plastic, in particular by means of an injection molding process. Particularly preferably, the seal and base body are made of a different plastic. Particularly preferably, the seal is made of a material that has a lower modulus of elasticity than the material from which the base body is made. Generally, the base body is preferably stiffer than the seal.

[0057] In one embodiment, the actuating element is locked to the holding arm in the operating state. In one embodiment, the seal is locked to the holding arm in the operating state. In one embodiment, the seal is directly locked to both the holding arm and the actuating element in the operating state. In one embodiment, the seal is locked to only one of the holding arm and the actuating element in the operating state, and is held fixed to the other of these two only by a locking engagement between the holding arm and the actuating element.

[0058] In one embodiment, in an assembled state in which the retaining spring is fastened to the mounting body, the seal is held in a latched manner on the retaining arm and, starting from the assembled state, can be latched to the actuating element by inserting the actuating element into the opening in the mounting body. Preferably, in the assembled state, the actuating element is not fixed to the retaining spring, but the retaining spring is already fixed to the mounting body. The retaining arm is aligned with the opening provided in the side wall of the mounting body. By inserting the actuating element from the outside through the opening, the seal can then be latched to the actuating element. Particularly preferably, the seal can be latched to the actuating element during actuation of the retaining arm by means of the actuating element.Particularly preferably, after the seal has been locked to the actuating element, the seal can then be released from the holding arm while remaining locked to the actuating element, thereby achieving the operating state. This embodiment is particularly advantageous for transport and assembly of the system according to the invention, since the seal can be arranged in a protected manner in the assembly body until the components of the system are delivered to a construction site, and only by inserting the actuating element and locking it to the seal can the seal be released from the holding arm and fixed to the actuating element, thus subsequently achieving the operating state in which a reliable seal between the opening and the actuating element is ensured.

[0059] In one embodiment, between the holding arm and / or the

[0060] In the operating state, a play is provided in the longitudinal direction between the mounting body side wall and the actuating element. The play is particularly preferably at least 0.2 mm, in particular at least 0.3 mm, in particular at least 0.5 mm, in particular at least 1 mm, in particular at least 1.5 mm. In the operating state, the actuating element preferably rests with a stop against a stop surface of the holding arm, wherein the seal is held pressed in the transverse direction between the holding arm and an inner side of the mounting body side wall and is thereby pressed around the opening against the inner side of the mounting body side wall. Thus, the resilient deflectability of the holding arm in the transverse direction ensures that the seal is compressed between the holding arm and the mounting body side wall, thus ensuring reliable sealing.In one embodiment, the seal is pressed between the holding arm and the mounting body side wall independently of the actuating element in the operating state. In one embodiment, the actuating element is fixed, in particular latched, to the holding arm in the operating state, and the seal is integrally provided on the actuating element or fixed thereto, wherein compression of the seal is ensured by the exertion of a spring force acting in the transverse direction of the holding arm in the direction of the mounting body side wall due to the fixation of the actuating element to the holding arm and the fixation or integral provision of the seal on or in the actuating element.

[0061] In one embodiment, the seal is resiliently compressible in the transverse direction. In one embodiment, the seal has a bellows-like section that is compressible in the transverse direction. Preferably, the bellows-like section is resiliently compressible.

[0062] As a solution to the problem underlying the invention, the invention proposes a system comprising a plurality of mounting bodies and a plurality of support rails with a U-shaped cross-section. The system is designed to realize a longitudinally elongated luminaire. The support rails each have a support rail base extending in a transverse direction between two support rail side walls and an open side opposite the support rail base in a vertical direction. The support rail side walls extend away from the support rail base in the vertical direction. In an operating state of the system, the support rails with their U-shaped cross-sections are arranged aligned one behind the other in the longitudinal direction and fixed to one another.Furthermore, in the operating state, the mounting bodies are arranged one behind the other in the longitudinal direction on the open side of one of the support rails in each case and are fixed to this and, together with the support rails, enclose an interior space. Two longitudinally adjacent support rails are sealingly connected to one another by means of a sealing sleeve. By providing such a sealing sleeve, the penetration of dirt at the joint between two adjacent support rails can be prevented as far as possible. However, the prior art only knows sealing sleeves that are complex to manufacture and / or complex to install and / or ensure inadequate sealing. According to the invention, the sealing sleeve has a sealing base and two sealing legs, forming a U-shaped cross-section of the sealing sleeve. In the operating state, the sealing sleeve is arranged so as to bear against the outer sides of both adjacent support rails.The support rails, with each of their two support rail side walls, each form a projection on their outside, which is spaced from the absolute vertical ends of the support rail side wall. The sealing sleeve has a retaining projection on each of its sealing legs, which, in operation, engages behind one of the projections of the support rail, creating a vertical pressing force against this projection. This makes it particularly easy to subsequently apply the sealing sleeve from the outside to two adjacent, mutually fixed support rails and arrange it on them by placing it on these support rails, starting from the outside of the support rail base of the two support rails.In this case, the sealing sleeve is particularly preferably designed such that its sealing legs are resiliently deflectable along the transverse direction, so that the sealing sleeve can be placed onto the two adjacent support rails due to the resilient deflection, starting from the outer side of the support rail base, until the retaining projections of its sealing legs engage with the projections provided on the support rail side walls and a vertical pressing force is generated by this engagement. Preferably, the interlocking of retaining projections and projections generates both a vertical pressing force between the retaining projections and projections and a pressing force opposing this vertical pressing force between the sealing base and the outer side of the support rail bases of the two adjacent support rails.

[0063] In one embodiment, the retaining projection of each sealing leg, with its transverse end facing the support rail side wall in the operating state, is spaced less than 10% of a total transverse width of the sealing sleeve from an outer side of the sealing leg assigned to it, facing away from the support rail side wall in the operating state. The end facing the support rail side wall in the operating state is thus only slightly spaced in the transverse direction from the corresponding transverse outer side of the sealing leg. This ensures that the retaining projection of the sealing leg and the projection of the support rail side wall engage as far as possible outside the transverse center of the support rail, thereby ensuring particularly good sealing of the sealing sleeve on the outside of the two support rails.In one embodiment, the retaining projection is spaced by at least 10%, in particular at least 20%, of a total vertical height of the sealing sleeve from a vertical end of the sealing sleeve formed by the sealing base. This spacing can ensure particularly good sealing contact of the sealing sleeve with the outer sides of the support rails, since the generation of the vertical pressing force between the retaining projection and the projection of the sealing leg and the support rail side wall and the corresponding spacing of the retaining projection from the sealing base over the largest possible vertical extension of the sealing sleeve can support a sealing contact between the sealing sleeve and the outer side of the support rail.

[0064] In one embodiment, the sealing base has a central transverse region, at each of whose two transverse ends there is an angled region of the sealing base, over which the sealing base runs with its outer side both in the vertical direction and in the transverse direction. Particularly preferably, the central transverse region runs in a straight line in the transverse direction, whereas the two angled regions are both angled away from the central region and are preferably angled towards one another, i.e. they enclose an angle of <180°, in particular <160°, in particular <150° between them. By configuring the sealing base in this way, pre-tensioning of the sealing sleeve in the transverse direction can be ensured in a particularly advantageous manner, which supports the best possible sealing fit against the outer side of the support rail side walls.The sealing legs are arranged at each end of one of the angled areas of the sealing base facing away from the central area and run away from this in a vertical direction.

[0065] In one embodiment, the sealing sleeve engages vertically behind the support rail exclusively at its support rail base. In one embodiment, the sealing sleeve extends vertically in the operating state, with its vertical end facing away from the sealing base extending at most to the vertical end of the support rail facing away from the support rail base. The advantageous configurations described above can significantly simplify both the implementation of the sealing sleeve and its installation on two adjacent support rails.

[0066] In one embodiment, the retaining projections are locked in the operating state with the projection of the support rail or the support rail side walls assigned to them in such a way that they overlap with them over both a vertical section and a transverse section. This enables the projection and retaining projection to engage behind one another. This can be particularly advantageous for sealingly fixing the sealing sleeve to the outside of the support rails. The vertical extent of the vertical section is particularly preferably less than one-tenth of the transverse extent of the transverse section. Of course, this refers to the length of the vertical section along the vertical direction or the length of the transverse section along the transverse direction.

[0067] In one embodiment, the sealing sleeve can be elastically snapped onto two adjacent support rails that are already fastened to one another to achieve the operating state. In one embodiment, the sealing sleeve is elastically compressible in the transverse direction. In one embodiment, the two longitudinally adjacent support rails are held fixed to one another by a coupling that is arranged within the receiving space formed by the two support rails, wherein the sealing sleeve can be snapped onto two support rails that are fastened to one another in this way, in particular starting from the support rail base of the two support rails. Thus, a seal between the two support rails can be ensured by means of the sealing sleeve after the support rails have previously been fixed to one another by means of the coupling.Generally, the sealing sleeve is preferably made of two different materials, the first material having a lower modulus of elasticity than the second material, and the sealing sleeve, in the operating state, rests against the outer sides of the two adjacent support rails with the first material. Preferably, the sealing sleeve has a support body made of the second material and on which at least one sealing strip made of the first material is provided. Preferably, the at least one sealing strip extends, in the operating state, over the entire support rail base and, starting from the support rail base, over at least 80%, in particular at least 90%, in particular 100% of the vertical extent of the support rail side walls.Particularly preferably, the sealing strip is a strip which is continuous in the longitudinal direction and which, in the operating state, rests with a first longitudinal section on a first of the support rails and with a second longitudinal section on a second of the support rails, wherein in particular the longitudinal sections run parallel to one another around a longitudinal axis, wherein in particular both longitudinal sections run next to one another over the same path length around the longitudinal axis and / or both longitudinal sections run both over the entire support rail base and, starting from the support rail base, over at least 70%, in particular at least 80%, in particular at least 90%, in particular less than 100% of the total vertical extent of the support rail side walls of the respective support rail, which they have starting from the support rail base up to the vertical end of the respective support rail opposite thereto.A particularly good seal can be achieved by such a longitudinally continuous sealing strip. Particularly preferably, the support body is designed as a U-shaped support body, with the sealing strip arranged on its inner side.

[0068] As a solution to the problem underlying the invention, the invention proposes a system with a plurality of mounting bodies and a plurality of support rails with a U-shaped cross-section. The system is designed to realize a longitudinally elongated luminaire. The support rails each have a support rail base extending in a transverse direction between two support rail side walls and an open side opposite the support rail base in a vertical direction. The support rail side walls extend away from the support rail base in the vertical direction. The system further comprises a coupling with a U-shaped cross-section, which has a coupling base extending in the transverse direction between two coupling side walls and an open side opposite the coupling base in the vertical direction.As explained with regard to the support rail and the mounting body, which are correspondingly U-shaped, the coupling side walls extend vertically away from the coupling base. In an operating state of the system, the support rails, with their U-shaped cross-sections, are arranged one behind the other in the longitudinal direction, with two longitudinally adjacent support rails being fixed to one another by the coupling. In this operating state, the coupling extends with one longitudinal section into each of the two adjacent support rails, and the adjacent support rails are each arranged with one of their longitudinal ends, namely with their mutually facing longitudinal ends, within a connecting region of the coupling and point towards one another with these longitudinal ends. The connecting region is a longitudinally extending region of the coupling.In the operating state, the mounting bodies are arranged one behind the other in the longitudinal direction on the open side of one of the support rails and are fixed thereto, and together with the support rails they enclose an interior space. As explained above, in the operating state there is a need for the support rails to be sealed off from one another within the connection area of ​​the coupling, i.e. at the level of their mutually facing longitudinal ends, so that contamination cannot enter the interior space between the two longitudinal ends. The system comprises several sealing inserts, wherein in the operating state one of the sealing inserts is arranged on each of the coupling side walls and extends over the connection area. The described solution therefore provides that a sealing insert is provided on the coupling and thus within the respective receiving space formed by the support rails, which sealing insert ensures a seal in the connection area of ​​the coupling, i.e.at the abutment point between the two support rails. The sealing inserts provided according to this solution can be used as an alternative or in addition to a sealing sleeve as explained above for sealing the transition between two longitudinally adjacent support rails. The inventors have found that by providing such sealing inserts arranged within the support rails and provided on the coupling side walls, a seal can be achieved in a particularly simple manner at those points where the coupling itself cannot ensure adequate sealing between the adjacent support rails. The sealing inserts can thus be specifically adapted to the geometry of the coupling so that the sealing inserts, together with the coupling, can ensure adequate sealing of the two adjacent support rails fixed to one another by means of the coupling.Generally speaking, the sealing inserts are preferably attached exclusively to the coupling, but not directly to the support rails. Generally speaking, the sealing inserts are arranged on the mutually facing inner sides of the coupling side walls. Generally speaking, the sealing inserts are preferably arranged only on the coupling side walls, but not on the coupling base, which can particularly simplify the assembly and implementation of the sealing inserts and can utilize the fact that the coupling base itself can advantageously ensure sufficient sealing between the support rail bases of the adjacent support rails. It should be noted that in order to fix the two adjacent support rails to one another, special measures must usually be provided on the coupling side walls, such as scraper springs, which prevent any longitudinal movement of the support rails relative to one another starting from the operating state, as far as possible.While the coupling sidewall often has large openings through which contaminants can penetrate, i.e., due to which the adjacent support rail sidewalls of the neighboring support rails are not sufficiently sealed against each other, such a problem does not arise in a large number of favorable configurations of support rails and couplings of embodiments of a system according to the invention. The invention is therefore based on the particular idea that the coupling and sealing inserts are jointly designed to provide sufficient sealing of the transition between two longitudinally adjacent support rails.

[0069] In one embodiment, the sealing inserts are made of a plastic, in particular at least partially made of an elastically deformable plastic. In one embodiment, the coupling is made of a metal sheet, in particular in one piece by forming the metal sheet. In one embodiment, the sealing inserts are made entirely of an elastically deformable plastic. In one embodiment, the sealing inserts are plate-shaped and, in the operating state, are arranged on an inner side of the coupling. Due to their plate-like design, the sealing inserts can be arranged with their plate surface, i.e. their large plate side, along the coupling side walls, whereas they extend inwards away from the coupling side walls with their narrow sides, i.e. their small plate sides.Due to the plate-like design, it can be ensured that the sealing inserts take up as little space as possible within the support rail or within the coupling and, on the other hand, can ensure sealing over the largest possible area.

[0070] In one embodiment, the sealing inserts each have a fastening arrangement that comprises projections and / or recesses of the respective sealing insert. The coupling side walls each have a holding arrangement corresponding to the fastening arrangement, which comprises projections and / or recesses of the respective coupling side wall. In the operating state, the holding arrangement and fastening arrangement are engaged, whereby the sealing inserts are fixed to the coupling. Particularly preferably, in the operating state, the fastening arrangement is pressed elastically compressed with the holding arrangement. Particularly preferably, in the operating state, the fastening arrangement is elastically deformed, whereas the holding arrangement is undeformed. In one embodiment, all sealing inserts have the same fastening arrangement and all coupling side walls have the same holding arrangement.Generally, all sealing inserts are preferably designed identically.

[0071] In one embodiment, the sealing inserts can be attached to the inside of the coupling after the support rails have been secured to each other by means of the coupling. In one embodiment, the sealing inserts can be reversibly attached to the coupling side walls and detached from them. Particularly preferably, the sealing inserts can be attached to the coupling side walls without the use of tools, and in particular, can be detached.

[0072] In one embodiment, the coupling has a plurality of openings in its coupling side walls, which, in the operating state, are closed by the sealing inserts arranged on the coupling side walls. Particularly preferably, a scraper spring projects from an inner side of the coupling to the outside through at least some of these openings. Particularly preferably, a plurality of scraper springs are provided on the coupling, wherein, in the operating state, at least one scraper spring bears against each of the two adjacent support rails, in particular at least one scraper spring in each case on each of the support rail side walls of the adjacent support rails, and the support rails are held fixed to one another in the longitudinal direction by the contact of the scraper springs, wherein the scraper springs are each fixed to the coupling and each project through an opening provided in the coupling side wall, which opening is sealed by one of the sealing inserts in the operating state.

[0073] The invention further relates to a luminaire manufactured using a system according to the invention. The luminaire may comprise components beyond the above-explained components of a system according to the invention, for example, additional electrical functional elements and / or optical covers, which, to implement the luminaire, are arranged on a side of the mounting body facing away from the support rail and through which LEDs of a lighting module provided on the mounting body emit light. To implement the luminaire, the components of the system are in their defined arrangement, which they maintain relative to one another in the operating state.

[0074] The invention further relates to a sealing device of a system according to the invention. The sealing device can have features, in particular properties, as will be apparent to the person skilled in the art from the present explanation of embodiments of a system according to the invention comprising such a sealing device. The invention further relates to a web element of a system according to the invention. The web element can have features, in particular properties, as will be apparent to the person skilled in the art from the present explanation of embodiments of a system according to the invention, in particular from the present explanations of a sealing device of embodiments of a system according to the invention. The invention further relates to a fixing element of a system according to the invention.The fixing element can have features, in particular properties, as will be apparent to those skilled in the art from the present explanation of embodiments of a system according to the invention, in particular from the present explanations of a sealing device of embodiments of a system according to the invention. The invention further relates to the sealing device of a system according to the invention. The sealing device can have features, in particular properties, as will be apparent to those skilled in the art from the present explanations of embodiments of a system according to the invention which comprise such a sealing device. The invention further relates to an arrangement comprising the actuating element and the seal of an embodiment of a system according to the invention, which comprise such an actuating element and such a seal for ensuring a seal between the opening provided in the mounting body side wall and the actuating element.Such an arrangement can have features, in particular properties, as will be apparent to those skilled in the art from the present explanations of embodiments of the invention comprising such an arrangement. The invention further relates to a sealing sleeve of an embodiment of a system according to the invention. The sealing sleeve can have features, in particular properties, as will be apparent to those skilled in the art from the present explanations of embodiments comprising such a sealing sleeve. The invention further relates to a sealing insert of an embodiment of a system according to the invention. The sealing insert can have features, in particular properties, as will be apparent to those skilled in the art from the present explanations of embodiments of a system according to the invention comprising such a sealing insert.The respective components of the system, namely sealing device, web element, sealing device, arrangement, sealing sleeve and sealing insert, each represent a solution according to the invention in itself, since they each have properties which in themselves contribute to the solution of at least part of the aforementioned problem underlying the invention.

[0075] The invention is explained below using exemplary embodiments with reference to 11 figures.

[0076] They show:

[0077] Figure 1: in various schematic principle representations, components of an embodiment of a system according to the invention;

[0078] Figure 2: in various schematic principle representations, a sealing device of an embodiment of a system according to the invention and further components of this system;

[0079] Figure 3: in various schematic principle representations, the sealing device of an embodiment of a system according to the invention and further components of this system;

[0080] Figure 4: in various schematic principle representations, further detailed views of the sealing device of the system according to Figure 3;

[0081] Figure 5: in various schematic principle representations, various views of the sealing devices of a further embodiment of the system according to the invention;

[0082] Figure 6: in various schematic principle representations, various views of the sealing device of a further embodiment of the system according to the invention;

[0083] Figure 7: in various schematic diagrams, different views of components of a

[0084] Embodiment of the system according to the invention, which has a sealing device according to Figure 5 and a sealing device according to Figure 6;

[0085] Figure 8: in various schematic principle representations, the sealing sleeve of an embodiment of a system according to the invention and further components of this system;

[0086] Figure 9: in a schematic principle representation of a support rail protective cap of an embodiment of a system according to the invention;

[0087] Figure 10: in various schematic principle representations, an arrangement comprising actuating element and seal of an embodiment of a system according to the invention and further components of this system;

[0088] Figure 11: in various schematic principle representations, a further embodiment of an arrangement of a system according to the invention;

[0089] Figure 12: in various schematic principle representations, a further embodiment of an arrangement of a system according to the invention;

[0090] Figure 13: in various schematic principle representations, a further embodiment of an arrangement of a system according to the invention;

[0091] Figure 14: in a schematic principle representation of a sealing insert of an embodiment of a system according to the invention as well as further components of this system.

[0092] Figure 1, comprising Figures 1a, 1b, 1c and 1d, shows components of an embodiment of a system according to the invention in the operating state in various schematic diagrams to explain the basic principle. Figure 1a shows the embodiment of the system in the operating state viewed from an outside. It can be seen that the embodiment comprises a plurality of support rails 1 which point towards one another with their longitudinal ends at a butt joint or transition point A. The support rails 1 each have a U-shaped cross-section with a support rail base 11 and support rail side walls 12, as can be seen from Figure 1d. Figure 1a shows that a sealing sleeve 6 is arranged on the outer sides of the two support rails 1 to seal the transition between two support rails 1.Furthermore, Figure 1a shows that, in the operating state, covers 10 are arranged on a vertical side of the support rails 1 opposite the support rail base 11. These covers 11 are arranged and fixed on mounting bodies 2, which are not visible in Figure 1a but can be seen, for example, in Figure 1c and Figure 1d, and which are in turn fastened to the support rails 1. Figure 1a also shows actuating elements 5 which, starting from the operating state shown in Figure 1a, can be actuated to release the mounting bodies 2 together with their covers 10 from the support rails 1. Figure 1b shows the longitudinal end of one of the support rails 1. It can be seen that a coupling 3 of the system, which has a U-shaped cross-section, is inserted into this longitudinal end.In the operating state, the coupling 3 is inserted into the longitudinal end of the adjacent support rail 1, which is not shown in Figure 1b, so that this coupling 3 fixes the two adjacent support rails 1 to one another. Figure 1b also shows the basic structure of a mounting body 2 and the joint B between two longitudinally adjacent mounting bodies 2. It can also be seen that actuating elements 5 are provided on the mounting bodies 2 for actuating retaining springs 20 fixed to the mounting bodies 2, and that a cover 10 is arranged on each of their vertical sides facing away from the support rail base 11. This cover 10 encloses an LED lighting module, which is provided on the side of the respective mounting body 2 facing away from the support rail base 11, so that the LEDs of this LED lighting module can emit light into a room through the cover 10.Between two longitudinally adjacent mounting bodies 2, a sealing device is provided in each case, comprising a web element 8 and a fixing element 7, against which sealing devices 9 press with their sealing sections, which are provided on one of the two adjacent mounting bodies 2 in each case, so that a seal is ensured at the joint B between two longitudinally adjacent mounting bodies 2. For explanatory purposes, an arrangement as shown in Figure 1b is shown again analogously in Figure 1c, with the difference that this arrangement shows the vertical side of one of the mounting bodies 2 facing away from the support rail base 11 and that the cover provided on this mounting body 2 is not shown. Figure 1d shows the fastening of a mounting body 2 to the support rail 1 assigned to it and the fastening of the cover 10 assigned to it.A retaining spring 20 is fixed to the mounting body 2, which, with its retaining arms, engages behind a retaining section 14 provided on each of the support rail side walls 12, pressing it against said retaining section, thereby pressing the mounting body side walls 22 from below against the retaining sections 14 of the support rail 1. The cover is fixed to the mounting body base 21 by means of locking elements 201. An actuating element 5 is provided on at least one of the retaining arms of the retaining spring 20, which extends from the outside into the interior space shown in Figure 1c through an opening provided in one of the mounting body side walls 22. A retaining arm of the retaining spring 20 assigned to this actuating element 5 can be resiliently deflected by the actuating element 5, so that by actuating the actuating element 5, the retaining arm can be released from the retaining section 14 assigned to it, and the mounting body 2 can then be released from the support rail 1.

[0093] Figure 2, comprising Figures 2a, 2b, 2c and 2d, shows a sealing device of an embodiment of the system according to the invention as well as further components of this system in various schematic representations. The sealing device has a web element 8 and a fixing element 7. The web element 8 has a T-shaped cross-section perpendicular to the transverse direction Y and forms the sealing surfaces of the sealing device. The sealing surfaces each comprise a partial surface 85 running in the vertical direction and a partial surface 84 running in the longitudinal direction, as shown in Figure 2a with reference to one of the sealing surfaces. The sealing device has such a sealing surface on each of its long sides. The sealing surfaces provided on the two long sides are identical.The web element 8 thus serves to provide sealing surfaces for two longitudinally adjacent mounting bodies 2 so that they can bear sealingly against the sealing device. The web element 8 has two spring regions 81, 82 on each of its two transverse sides, which are spaced apart from one another in the longitudinal direction X. The web element 8 further has a rod-like counter-region 83, which extends at least partially in the longitudinal direction X between the two spring regions 81, 82. As can be seen in particular from the combined view of Figures 2c and 2d, in the operating state of the described embodiment of the system according to the invention, the counter-region 83 bears against an underside of its associated holding projection 14, whereas the spring regions 81, 82 bear against an upper side of this holding section 14. This ensures a reliable and sealing fixation of the web element 8 itself relative to the support rail 1.The sealing device further comprises a fixing element 7, as shown in detail in Figure 2b. The fixing element 7 has a fixing region 71 on each transverse side, with which it is arranged in the operating state in a recess 15 formed by the respective support rail side wall 12. Accordingly, the fixing element 7 engages behind the holding sections 14, which are formed at least in sections by the recess 15 and extend from there towards the transverse center of the support rail 1, so that the provision of the fixing element 7 and its arrangement relative to the support rail 1 in the operating state effectively prevents the support rail side walls 12 from moving apart along the transverse direction. The fixing element 7 rests on the web element 8 with a support region 74, which is generally advantageous according to the invention.Furthermore, the fixing element 7 has a pair of recesses 72 in each transverse end region, wherein the recesses 72 of each pair are separated from each other by a partition 73. Each of these recesses 72 is designed to receive a tab web of a sealing device, explained in more detail below.

[0094] In Figure 3, comprising Figures 3a, 3b and 3c, and in Figure 4, comprising Figures 4a, 4b and 4c, a sealing device 9 of an embodiment of a system according to the invention, as well as further components of this system, are shown schematically in various schematic representations. In the operating state of the system according to the invention, the sealing device 9 is arranged on one of the mounting bodies 2 of the system and fixed thereto. A base section thereof bears against the mounting body base 21 and a side section thereof bears against the two mounting body side walls 22. It bears against the mounting body base 21 and the mounting body side walls 22 in such a way that it is pressed against them in a sealing manner. In addition, the sealing device 9 forms a sealing section by means of which the mounting body 2 can be sealed against a mounting body 2 adjacent in the longitudinal direction X.The sealing section has a sealing lip 91 and a sealing tab, which in this case has transverse end regions 95 that extend in a serpentine manner relative to a plane perpendicular to the vertical direction Z, as well as a central region 94 that connects the transverse end regions 95 to one another, and tab webs 96, each of which forms an absolute transverse end of the sealing tab. The sealing tab projects vertically beyond the mounting body side walls 22 and is vertically spaced from the sealing lip 91. The sealing lip 91 is linear and runs with one line section along each of the two mounting body side walls 22 and with another line section that continuously connects the first two along the mounting body base 21.In principle, in simple embodiments, sealing of two mounting bodies 2 adjacent in the longitudinal direction X is possible simply by means of the sealing lip 91, in that these sealing lips 91 abut one another in the longitudinal direction X. In a particularly advantageous embodiment, the sealing tab also makes a significant contribution to the sealing, as can be seen, for example, in Figure 3c. In the described embodiment of a system according to the invention, a sealing device as explained above is provided between the two mounting bodies 2, wherein the sealing tabs of the sealing devices 9, which are provided on the two mounting bodies 2 adjacent in the longitudinal direction X, bear in a sealing manner against the partial surfaces 84, 85 of the sealing surfaces of the sealing device running in the longitudinal direction X.Even in the event of a relative movement of the mounting bodies 2 to one another, starting from the operating state shown in Figure 3c, a sealing connection between the two mounting bodies 2 is thus still ensured by means of the sealing sections of the sealing devices 9 provided on them. In the operating state shown in Figure 3c, the sealing lips 91 also bear sealingly against the partial surface 85 of the sealing device running in the vertical direction Z, so that a further advantageous seal is ensured. The fact that the sealing device 9 has an overhang section with which it extends over a side of the mounting body side walls 22 facing away from the mounting body base 21 and thus projects beyond them in the vertical direction Z.The overhanging section ensures particularly reliable, sealing-ensuring fixation of the sealing device 9 and the entire mounting body 2 to the support rail 1 in the operating state. As can be seen from Figure 3b, the overhanging section can press from above onto a holding section 14 of the support rail 1, thereby ensuring a sealing connection between the sealing device 9 and the holding section 14, and thus the support rail 1. The overhanging section in this case has several parts. On the one hand, it has a part designed as an actuating section 93, and on the other hand, a further part 92 designed for sealing engagement with the holding section 14 and / or the associated mounting body side wall 22. The structure of the sealing device 9 of the embodiment described here can be seen from Figure 4, comprising Figures 4a, 4b, and 4c.The sealing device 9 has a sealing element 910 and a stabilizing element 920, wherein the sealing element 910 forms the sealing section, the base section, the side section, and the above-explained further part 92 of the overhang section. The stabilizing element 920 is at least partially enclosed by the sealing element 910. The stabilizing element 920 and the sealing element 910 form guide rails 97, 98 with which they interlock. In the present case, the sealing element 910 is produced by overmolding the stabilizing element 920, so that the stabilizing element 920 and the sealing element 910 are manufactured as a single-piece component by means of two-component injection molding. The part of the overhang section formed by the stabilizing element 920 overhangs the part of the overhang section formed by the sealing element 910, which is generally advantageous according to the invention.This allows the part of the overhanging section formed by the stabilizing element 920 to press the part of the overhanging section formed by the sealing element 910 against the holding section 14 and in particular the mounting body side wall 22. This is particularly advantageous because the stabilizing element 920 is made of a stiffer material than the sealing element 910 and can thus exert an advantageous contact force against the further part 92 of the overhanging section formed by the sealing element 910 against the holding section 14.The part of the overhang section formed by the stabilizing element 920 is designed at least in sections as an actuating section 93, so that for assembly and disassembly purposes, the sealing device 9 and thus also the mounting body 2 can be easily released via the actuating sections 93. Figure 5, comprising Figures 5a, 5b, 5c and 5d, shows a sealing device 9 of a further embodiment of a system according to the invention in various schematic principle representations for explanatory purposes. Figure 6, comprising Figures 6a, 6b and 6c, shows a sealing device of a further embodiment of a system according to the invention in various schematic principle representations for explanatory purposes.In Figure 7, comprising Figures 7a, 7b and 7c, components of an embodiment of a system according to the invention are shown in simplified form in various schematic diagrams for explanatory purposes, wherein the embodiment of the system according to the invention shown in Figure 7 has a sealing device 9, as shown in simplified form in Figure 5, and a sealing device, as shown in simplified form in Figure 6. In the following, Figures 5, 6 and 7 are explained together to better understand the properties and functions of the components of embodiments of the system according to the invention.

[0095] The sealing device 9, as shown in Figure 5, is arranged on one of the mounting bodies 2 of the system in the operating state of the system according to the invention and fixed thereto, as can be seen from Figure 7. It rests with a base portion against the mounting body base 21 and with a side portion against the two mounting body side walls 22. The fixing of the sealing device 9 to the mounting body 2 is particularly advantageously ensured in the embodiment according to Figure 5 in that the sealing device 9 has a receptacle on each of its transverse sides, which is formed by two partial receptacles 991, 992 that are spaced apart from one another along the longitudinal direction X. A sealing web 99 extends between these partial receptacles 991, 992.As can be seen in particular from Figure 7a, the projection 23 of an associated mounting body side wall 22 is arranged in each of the receptacles, wherein the sealing device 9 is pressed vertically along the vertical direction Z between the projection 23 and the mounting body base 21 and is pressed laterally between the mounting body side walls 22. The sealing device 9 further has an overhang section which has a fastening section 900 comprising a spring section 902 and a contact section 901. In addition, the sealing device 9 has sealing wall sections 960 which run between the contact section and the sealing tab and protrude vertically beyond the sealing tab, wherein the sealing tab has transverse end regions 95, a central region 94 and tab webs 96, as has already been explained with reference to the exemplary embodiment according to Figure 4.Furthermore, the sealing device 9 has a sealing lip 91, as already explained. The sealing device 9 has a sealing element 910 and a stabilizing element 920. The stabilizing element 920 and the sealing element 910 are each made of plastic, in this case by means of an injection molding process, with the stabilizing element 920 being made of a harder plastic than the sealing element 910. The sealing element 910 and the stabilizing element 920 are each shown separately in Figures 5c and 5d, whereas the sealing device 9 is shown as a whole in Figures 5a and 5b. The described receptacles or partial receptacles 991, 992 are at least partially formed by the stabilizing element 920, which is generally advantageous according to the invention, since this enables a particularly reliable fixation of the sealing device 9 to the mounting body 2.Furthermore, the fastening section 900 is formed at least predominantly by the stabilizing element 920, which is generally advantageous according to the invention. The spring section 902 is formed, generally advantageous according to the invention, by the stabilizing element 920. The spring section 902 has a plurality of partial spring sections arranged one behind the other along the longitudinal direction X and spaced from one another, and furthermore has two side spring sections, each of which has a plurality of partial spring sections and a cross-section in the manner of a U-shape. In the operating state, each side spring section bears against exactly one holding section 14 of the support rail 1 assigned to it. Due to the described embodiment, the spring section can be designed particularly simply and cost-effectively to provide a sufficient holding spring force on the support rail 1, wherein the operating state is taken into account orto a holding, as shown in Figure 7. In the operating state, the sealing device for forming the vertical and transverse pressing force with which the sealing device 9 in the operating state rests against the holding sections 14 and is thereby held thereon or contributes to holding the mounting body 2 on the support rail 1, rests exclusively via a contact surface formed by the contact section 901, which is formed by the stabilizing element 920. This ensures, on the one hand, a sufficient pressing force, and, on the other hand, dismantling starting from the operating state by pulling the mounting body 2 off the support rail 1 along the vertical direction Z without actuating the non-actuable holding spring provided by the sealing device 9.The contact section 902 has two lateral contact sections, each forming an inclined surface section with which it rests against the holding section 14 assigned to it in the operating state. For particularly good fixation of the sealing element 910 to the stabilizing element 920, the sealing element has an engagement section 911 and the stabilizing element 920 has a recess 9120, wherein the recess 9120 has a plurality of recess sections arranged one behind the other along the longitudinal direction X and spaced from one another, and the engagement section 911 has a plurality of projection sections arranged one behind the other along the longitudinal direction X and spaced from one another. Thus, the recess 9120 and the engagement section 911 engage with one another in an interlocking manner. However, the overhang section only rests with the part formed by the stabilizing element 920 and thus not with the engagement section 911 in the operating state.

[0096] Holding sections 14 of the support rail 1, so that the stabilizing element alone forms the contact surface. Figure 6 shows a sealing device of an embodiment of a system according to the invention, as is included, for example, in the system shown in Figure 7. The sealing device has a web element 8 and a fixing element 7. The fixing element 7 is trough-shaped and has downwardly projecting fixing regions 71, with which it is arranged in the operating state in a recess 15 formed by the respective support rail side wall 12, as can be seen in particular from Figure 7b. The fixing element 7 further has two recesses 72 running through the longitudinal direction, in each of which a sealing web 86 of the web element 8 is arranged in the operating state, as can be seen, for example, in Figures 6c, 7b and 7c.The web element 8 has two such sealing webs 86, which extend over a same longitudinal section, within which the counter regions 83 of the web element 8 run. The counter regions 83 are transversely spaced from the sealing webs 86, so that in the operating state, as can be seen, for example, from Figures 7b and 7c, the counter regions 83 press from below against a respective associated support rail projection 14, whereas the sealing webs 86 are transversely offset and extend vertically above relative to the counter regions 83 and thereby run on a transverse side of the holding sections 14, thereby providing a particularly good sealing effect or dust barrier.Furthermore, it is apparent from the combination of Figures 6 and 7 that in the operating state, the fixing element 7 runs within the same longitudinal section as the counter regions 83 and sealing webs 86, wherein the fixing element 7, relative to the longitudinal direction X, is arranged between the spring regions 81, 82 of the web element 8, which is generally advantageous according to the invention.

[0097] The interaction of the various sealing measures of an advantageous embodiment of the system according to the invention is particularly clearly visible in Figure 7. While Figure 7a shows a section through components of the system perpendicular to the transverse direction Y, Figures 7b and 7c show sections perpendicular to the longitudinal direction X, but at different longitudinal positions. From a view of Figures 7a, 7b and 7c together, it can be seen that in the operating state, the sealing tabs of the sealing devices 9, which are provided on the two adjacent mounting bodies 2, press against a respective different partial surface 84 of the web element 8, so that they are pressed together in a sealing manner by means of the web element 8, wherein, in addition, the sealing lips 91 press against a respective different partial surface 85 of the web element 8, which can lead to further sealing compression.In the event of a possible longitudinal displacement of the mounting bodies 2 relative to one another, the sealing lips 91 may possibly move away from the web element 8, whereas the sealing tabs, due to the T-shaped configuration of the web element 8, which is generally advantageous according to the invention, continue to press against their respective associated partial surface 84 of the web element 8. By providing spring regions 81, 82 and counter regions 83, a particularly good fixation of the sealing device to the support rail 1 can be ensured, whereas by providing the sealing webs 86 and accommodating them in a respective recess 72 of the fixing element 7, a particularly good seal can be provided.

[0098] Figure 8, comprising Figures 8a and 8b, shows schematically the sealing sleeve 6 of an embodiment of a system according to the invention, as well as other components of this system, in various schematic representations. The sealing sleeve 6 has a sealing base 61 and sealing legs 62. A retaining projection 63 is provided on each of the sealing legs 62, which, in the operating state of the system, engages behind an associated projection of the support rail side wall 12 and presses against this projection. A vertical pressing force is generated between the projection and the retaining projection 63. The projection of the respective support rail side wall 12 is formed in the present case in that the support rail side wall 12 has a notch, which merges via projections into the adjacent sections of the support rail side wall 12.By engaging behind the projections of the support rail side walls 12 by the retaining projections 63, a vertical pressing force is generated, by which the sealing base 61 is pressed against the support rail bases 11 of the two adjacent support rails 1. Furthermore, due to a spring-elastic design of the sealing sleeve 6 in the transverse direction and the engaging behind it, it is ensured that the sealing legs 62 also bear sealingly against the outer sides of the support rail side walls 12 of the two support rails 1 adjacent in the longitudinal direction X.

[0099] Figure 9 shows a schematic diagram of a support rail protective cap of an embodiment of a system according to the invention. In advantageous embodiments, the system according to the invention can generally have such a support rail protective cap 100 at each of the two longitudinal ends of its support rail 1 or its support rail arrangement comprising support rails 1 arranged one behind the other in the longitudinal direction X. The support rail protective cap 100 has a support rail side wall receptacle 112 for each support rail side wall 12 and a support rail bottom receptacle 111 for the support rail base 11, as well as a notch receptacle 113 for the notch 13.Accordingly, the mounting rail protection cap 100 can be placed onto a longitudinal end of a mounting rail 1 such that its circumferential wall region 14 rests against an inner side of the mounting rail 1, the mounting rail side walls 12 are arranged in the mounting rail side wall receptacles 112, and the mounting rail base 11 is arranged in the mounting rail base receptacle 111. The mounting rail protection cap 100 further comprises clamping projections 105, 196, which advantageously ensure that the mounting rail protection cap 100 is fixed to the mounting rail 1. Furthermore, the mounting rail protection cap 100 forms a sealing surface 194, 195, which is designed to correspond to the sealing section of a sealing device 9 provided in a mounting body 2 of the system. Thus, the mounting rail protection cap 100 is suitable not only for sealing the mounting rail, but also for sealing the transition between the mounting rail protection cap 100 and the mounting body 2.Accordingly, the sealing devices 9 are not only suitable for sealing two mounting bodies 2 adjacent in the longitudinal direction X against each other, but also for sealing the mounting body 2 against a mounting rail protective cap 100.

[0100] Figure 10, comprising Figures 10a, 10b, 10c, 10d, and 10e, schematically shows an arrangement comprising an actuating element 5 and a seal 52 of an embodiment of a system according to the invention, as well as other components of this system, in various schematic representations. The system comprises a retaining spring 20 with retaining arms 220, each of which is provided by a spring 211 on a base body 210 of the retaining spring 20, resiliently deflectable relative to the latter in the transverse direction Y. In the present case, the spring 211 is manufactured integrally with the base body 210. The base body 210 has clamping projections 212, with which it can be clamped under projections 23 of the mounting body side walls 22 to fix the retaining spring 20 to the mounting body 2.The holding arms 220 each form a holding arm projection 221, with which they rest, in the operating state as explained here, on the upper side of each of the holding sections 14 of the support rail 1, thereby fixing the mounting body 2 relative to the support rail 1. The holding arms 220 can be actuated by an actuating element 5 in the operating state from an outer side of the support rail 1 and the mounting body 2, and thus from outside the interior space enclosed by them. For this purpose, the actuating elements 5, as shown in Figure 7d, each protrude through an opening provided in a mounting body side wall 22.In the operating state, the actuating elements 5 each rest with a stop 56, as shown in Figure 7d, against a stop surface 226, as shown in Figure 7c, of the respective holding arm 220, so that by actuating the actuating element 5 at its actuating surface 51, the holding arm 220 can be deflected by displacing the actuating element 5 towards the transverse center of the support rail 1. The provision of a retaining projection 55 on the actuating element 5 and the provision of a captive hook 223 ensures that the holding arms 220 are held captively on the base body 210 and that the actuating elements 5 are held captively on the holding arm 220 assigned to them. In the exemplary embodiment shown in Figure 7, a seal 52 is provided integrally on the actuating element 5.In the operating state, the seal 52 presses with a sealing side 53 shown in Figure 7d against the inside of the mounting body side wall 22 assigned to the respective actuating element 5. In the present case, this is achieved by the holding arm 220 exerting a spring force on the actuating element 5 along the transverse direction Y toward the mounting body side wall 22 due to its spring-elastic connection to the base body 210 in the transverse direction Z. Since the seal 52 is provided integrally on the actuating element 5, it is thereby pressed against the inside of the mounting body side wall 22.

[0101] Figure 11, comprising Figures 11a and 11b, Figure 12, comprising Figures 12a, 12b, 12c, 12d, 12e, and 12f, and Figure 13, comprising Figures 13a, 13b, and 13c, each show a further embodiment of an arrangement according to the invention comprising actuating element 5 and seal 52, or of a system according to the invention comprising such an arrangement, in schematic principle representations. In the exemplary embodiment according to Figure 8, the seal 58 has a bellows-like section 583 and is pressed with a sealing side 582 against the inside of the mounting body side wall 22. It is held latched to the holding arm 220 by a fixing section 581. When the holding arm 220 is actuated by means of the actuating element 5, the seal 58 is deformed in the transverse direction Y, whereby its bellows-like design continuously ensures a reliable seal between the opening and the actuating element 5.In the embodiment according to Figure 9, the seal 58 is held latched to the holding arm 220 in an assembled state, as shown in Figure 9d. Starting from the assembled state, the actuating element 5 is latched to the seal 58 by inserting the actuating element 5 into the opening of the mounting body 2, whereby the seal 58 latches to the base body 57 of the actuating element 5. For this purpose, a latching device with latching sections 584, 585 is provided on the seal 58, by means of which the seal 58 can be latched to the base body 57 of the actuating element 5.In the embodiment according to Figure 10, the actuating element 5 has a base body 57 and a seal 58, wherein the seal 58 is made of a different plastic than the base body 57 and is manufactured in a different manufacturing step than the base body 57. To realize the actuating element 5, the seal 58 is locked to the base body 57. For this purpose, the base body 57 and the seal 58 have corresponding locking devices 576, 577, 586, 587.

[0102] Figure 14, comprising Figures 14a, 14b, 14c, 14d, 14e, and 14f, shows a sealing insert of an embodiment of a system according to the invention, as well as other components of the system, in various schematic representations. Figure 14 shows that the illustrated embodiment comprises several sealing inserts 31, each of which is plate-shaped and, in the operating state of the system, is arranged on an inner side of one of the coupling side walls 302.It should be noted that the coupling side walls 302 of the coupling 3 are connected to one another by a coupling base 301 and that, although the coupling base 301 can provide a sufficient seal between the support rails 1 at the transition between two support rails 1, the coupling side walls 302 cannot, since these have openings 300 through which a scraper spring 30 extends, wherein each of the scraper springs 30 is held in a scraped manner on one of the support rails 1 and thus the support rail 1 is fixed relative to the coupling 3 with respect to the longitudinal direction X. While the opening 300 is visible in Figure 14b and the system is shown in the operating state without the sealing insert 31, a combination of Figures 11e and 11f shows that the sealing insert 31 closes the openings 300 in the operating state. Due to its plate-like design, it takes up as little space as possible within the coupling 3.The sealing inserts 31 are each identically designed and have a plurality of projections and recesses 311 as a fastening arrangement, and the coupling side walls 302 have a corresponding holding arrangement, wherein each of the projections of the fastening arrangement is assigned a recess 311 of the holding arrangement, and each recess 311 of the fastening arrangement is assigned a projection of the holding arrangement. The sealing inserts 31 are fixed to the coupling side walls 302 by their fastening arrangements being elastically deformed and pressed onto the holding arrangements of the coupling side walls 302. The sealing inserts 31 also each have recesses 313 in which the scraper springs 30 are movably arranged in the operating state, as well as covering areas 312 that are specifically designed to correspond to openings provided in the coupling side walls 302 in order to be able to close them in the operating state.

[0103] Sealed light strip

[0104] Reference character list

[0105] 1 support rail

[0106] 2 mounting bodies

[0107] 3 Clutch

[0108] 5 Actuating element

[0109] 6 Dichtmans chette

[0110] 7 Fixing element

[0111] 8 web element

[0112] 9 Sealing device

[0113] 10 Cover

[0114] 11 Support rail floor

[0115] 12 support rail side wall

[0116] 13 Notch

[0117] 14 stopping section

[0118] 15 Recess

[0119] 20 retaining spring

[0120] 21 Mounting body base

[0121] 22 Mounting body side wall

[0122] 23 lead

[0123] 30 scratch spring

[0124] 31 Sealing insert

[0125] 52 Seal

[0126] 53 Sealing side

[0127] 55 Retaining projection

[0128] 56 attack

[0129] 57 Base body 58 Seal

[0130] 61 Sealing floor

[0131] 62 sealing legs

[0132] 63 retaining projection

[0133] 71 Fixing area

[0134] 72 recess

[0135] 73 Partition wall

[0136] 74 support area

[0137] 81 spring area

[0138] 82 spring area

[0139] 83 Counter area

[0140] 84 Partial area (longitudinally running)

[0141] 85 Partial area (running in vertical direction)

[0142] 86 Sealing bar

[0143] 91 Sealing lip

[0144] 92 further part of the overhang section

[0145] 93 Operating section

[0146] 94 midrange

[0147] 95 End area

[0148] 96 Las chensteg

[0149] 97 guide rail

[0150] 98 guide rail

[0151] 99 Sealing bridge

[0152] 100 support rail protective cap

[0153] 105 clamping projection

[0154] 111 Support rail floor mount

[0155] 112 Support rail side wall mount

[0156] 113 Notch holder

[0157] 194 Sealing surface

[0158] 195 Sealing surface

[0159] 196 clamping projection

[0160] 201 locking element

[0161] 210 basic body

[0162] 211 spring

[0163] 212 clamping projection

[0164] 220 holding arm

[0165] 221 Holding arm projection 223 Anti-loss hook

[0166] 226 stop surface

[0167] 300 opening

[0168] 301 clutch base

[0169] 302 Coupling side wall

[0170] 311 recess

[0171] 312 Coverage area

[0172] 313 recess

[0173] 576 locking device

[0174] 577 locking device

[0175] 581 Fixing section

[0176] 582 Sealing side

[0177] 583 bellows-like section

[0178] 584 locking section

[0179] 585 locking section

[0180] 586 locking device

[0181] 587 locking device

[0182] 900 fastening section

[0183] 901 Annex Section

[0184] 902 spring section

[0185] 910 sealing element

[0186] 911 intervention section

[0187] 920 stabilizing element

[0188] 960 waterproofing wall section

[0189] 991 Partial shot

[0190] 992 partial recording

[0191] 9120 recess

[0192] A crossing point

[0193] B joint

[0194] X Longitudinal direction

[0195] Y transverse direction

[0196] Z vertical direction

Claims

Sealed light strip Patent claims 1. System for realizing a luminaire elongated in the longitudinal direction (X), the system comprising a plurality of mounting bodies (2) and at least one support rail (1) with a U-shaped cross-section, 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 support rail width walls (12) extend away from the support rail base (11) in the vertical direction (Z), wherein the mounting bodies (2) are arranged one behind the other in the longitudinal direction (X) on the open side of the support rail (1) and are fixed to the support rail (1) and, together with the support rail (1), enclose an interior space, characterized in that the system comprises a sealing device,which in the operating state is arranged between two mounting bodies (2) adjacent in the longitudinal direction (X) and which has two sealing surfaces, each of which is assigned to exactly one of the adjacent mounting bodies, wherein on each of the adjacent mounting bodies (2) a sealing section is provided, via which it rests in the operating state on the sealing surface assigned to it, wherein each of the support rail side walls (12) has on its side facing the respective opposite support rail side wall a holding section (14) and in the operating state the, Sealing device is fixed to the holding sections (14) by defining a transverse relative position of the support rail side walls (12) to one another at the level of their holding sections (14), wherein in particular the support rail (1) is produced from a sheet metal by means of forming and / or the holding sections (14) are spaced from the support rail base (11) by at least 70% of a vertical height of the support rail (1) in the vertical direction (Z).

2. System according to claim 1, characterized in that the support rail side walls (12) each have a recess (15), wherein the holding sections (14) of the support rail side walls (12) are each formed at least in sections by a transverse limitation of the recess (15), wherein the sealing device has in each of its two transverse end regions a fixing region (71), wherein in the operating state each of the fixing regions (71) is arranged in one of the recesses (15) assigned to it.

3. System according to one of the preceding claims, characterized in that the sealing device in the operating state rests both on a vertical upper side and on a vertical lower side of the holding sections (14) with a contact area each, wherein in particular the contact areas are arranged with respect to the transverse direction (Y) between fixing areas (71) of the sealing device, with which the sealing device in the operating state engages behind the holding sections (14) while preventing the holding sections (14) of the support rail side walls (12) from moving apart in the transverse direction (Y).

4. System according to one of the preceding claims, characterized in that the sealing device has spring regions (81, 82) with which it rests on the upper side of the holding sections (14) in the operating state and presses against them with a spring force, wherein in particular the spring regions (81, 82) are each designed to be spring-elastic both in the vertical direction (Z) and in the transverse direction (Y).

5. System according to claim 4, characterized in that the sealing device has counter regions (83) with which it rests on the underside of the holding sections (14) in the operating state and presses against them, wherein in particular the counter regions (82) press both in the vertical direction (Z) and in the transverse direction (Y) against the holding sections (14) assigned to them, wherein in particular the counter regions (83) and / or the spring regions (81, 82) in the transverse direction (Y) only rest on the holding sections (14) at those points which are closer to the transverse center of the support rail (1) than those points on the holding sections (14) at which the fixing regions (71) of the sealing device rest.

6. System according to claim 5, characterized in that the sealing device has sealing webs (86), wherein each sealing web (86) is assigned to one of the counter regions (83) and is spaced apart from this, wherein in particular in the operating state one of the holding sections (14) is arranged at least in sections between one of the counter regions (83) and the sealing web (86) assigned to it, wherein in particular each sealing web (86) extends at least in sections vertically above the counter region (86) assigned to it.

7. System according to one of the preceding claims, characterized in that the sealing surfaces of the sealing device each comprise a partial surface (84) extending in the longitudinal direction (X), wherein the sealing section provided on each of the adjacent mounting bodies (2) bears sealingly against one of these partial surfaces (84) assigned to it.

8. System according to one of the preceding claims, characterized in that the sealing device in the operating state is spaced from the support rail base (11) of the support rail (1) by at least 70% of the total vertical extent of the support rail (1) over at least 70% of its transverse extent.

9. System according to one of the preceding claims, characterized in that the sealing surfaces (84, 85) of the sealing device each comprise a partial surface (85) running in the vertical direction (Z), wherein these partial surfaces (85) each run over the same vertical extension area and are vertically spaced from the support rail base (11), in particular are spaced from the support rail base (11) by at least 70% of the total vertical extension of the support rail (1).

10. System according to one of the preceding claims, characterized in that the sealing device comprises a web element (8) and a fixing element (7), wherein the web element (8) forms at least a predominant portion of at least one partial surface of the sealing surface, wherein the fixing element (7) engages behind the holding sections (14) of the support rail side walls (12) to determine their transverse relative position to one another, wherein in particular the Fixing element (7) is detachably connectable to the web element (8) for realizing the operating state and, in particular, starting from the operating state, the fixing element (7) without change a relative position of the web element (8) relative to the support rail (1) is detachable from the support rail (1) and from the web element (8), wherein in particular the system comprises a plurality of web elements (8) and a plurality of fixing elements (7), wherein in the operating state a sealing device comprising one of the web elements (8) and one of the fixing elements (7) is arranged between some pairs of mounting bodies (2) adjacent in the longitudinal direction (X), and between other pairs of mounting bodies (2) adjacent in the longitudinal direction (X) only one of the web elements (8) but none of the fixing elements (7) is arranged, and the mounting bodies (2) of each pair of mounting bodies (2) adjacent in the longitudinal direction (X) each bear in a sealing manner against the web element (8) arranged between them.

11. System according to one of claims 7 to 10, characterized in that the web element (8) forms the partial surface (84, 85) running in the longitudinal direction (X) and / or in the vertical direction and the fixing element (7) in the operating state is arranged vertically above the respective partial surface (84, 85) within the transverse extension of the respective partial surface (84, 85) and engages behind the holding sections (14) outside the transverse extension of the respective partial surface (84, 85), wherein in particular the web element (8) has a T-like cross-section perpendicular to the transverse direction (Y).

12. System according to claim 10 or 11, characterized in that the fixing element (7) runs within the longitudinal extension of the web element (8) and is spaced from both longitudinal ends of the web element (8), wherein in particular the web element (8) bears sealingly with one edge sealing surface on a vertical underside of each of the holding sections (14) and in each case with two holding areas spaced apart from one another in the longitudinal direction on a vertical upper side of each of the holding sections (14), wherein in particular in the operating state the fixing element is arranged in the longitudinal direction between the holding areas.

13. System according to one of claims 10 to 12 and furthermore at least according to claim 5 or 6, characterized in that the web element (8) has at least one of the spring regions (81, 82) and one of the counter-regions (83) on each of its two transverse sides, wherein the spring region (81, 82) has spring arms running in the vertical direction (Z) and the transverse direction (Y), and the counter-region (83) in the operating state bears against the holding section (14) arranged on the respective transverse side of the web element (8), wherein in particular the fixing element (7) has recesses (72) which are each assigned to one of the sealing webs (86) or to a tab web provided on one of the mounting bodies (2), wherein in the operating state the assigned sealing web (86) or the assigned tab web is arranged in each recess (72).

14. System according to claim 13, characterized in that in the operating state the fixing element (7) is arranged along the longitudinal direction (X) between the spring regions (81, 82), and / or that in the operating state the fixing element (7) runs within a same longitudinal section (X) within which the counter regions (83) and in particular the sealing webs (86) run.

15. System, in particular according to one of the preceding claims, for realizing a luminaire elongated in the longitudinal direction (X), the system comprising a plurality of mounting bodies (2) and at least one support rail (1) with a U-shaped cross-section, which has a support rail base (11) extending in a transverse direction (Y) between two support rail side walls (12) and a support rail base (11) in a vertical direction (Z) opposite open side, with the Support rail width walls (12) extend away from the support rail base (11) in the vertical direction (Z), wherein the mounting bodies (2) are arranged one behind the other in the longitudinal direction (X) on the open side of the support rail (1) in an operating state of the system and are fixed to the support rail (1) and, together with the support rail (1), enclose an interior space, wherein the mounting bodies (2) each have a mounting body base (21) which extends in the transverse direction (Y) between two mounting body side walls (22), wherein each of the support rail side walls (12) has a holding section (14) on its side facing the respective opposite support rail side wall (12), and in the operating state, the mounting bodies (2) are fixed to the holding sections (14), wherein a sealing device (9) is provided on each of the mutually facing longitudinal sides of two mounting bodies (2) adjacent in the longitudinal direction (X),by means of which the adjacent mounting bodies (2) are sealed against one another in the operating state, characterized in that the sealing device (9) assigned to the respective mounting body (2) forms a sealing section, wherein the adjacent mounting bodies (2) are pressed together in a sealing manner with their sealing sections in the operating state, wherein the sealing device (9) presses with a bottom section against the mounting body base (21) and with a side section against the mounting body side walls (22) and / or wherein the sealing device (9) extends with an overhang section above a side of the mounting body side walls (22) facing away from the mounting body base (21), overhanging said side walls and, in particular, in the operating state, presses in the vertical direction (Z) against the holding section (14) assigned to the respective mounting body wall (22).

16. System according to claim 15, characterized in that the sealing device (9) has a sealing element (910) and a stabilizing element (920), wherein the sealing element (910) forms the sealing section, the bottom section and the side section and encloses the stabilizing element (920) at least in sections, wherein the stabilizing element (920) is made of a harder material than the sealing element (910), wherein in particular the sealing element (910) and the stabilizing element (920) are made of plastic, in particular by means of injection molding.

17. System according to claim 16, characterized in that the sealing element (910) and the stabilizing element (920) have mutually corresponding guide rails (97, 98) running in the longitudinal direction (X), which are arranged in an interlocking manner and extend over at least 30%, in particular at least 50% of the entire longitudinal extent of the sealing device (9), wherein in particular the guide rails (98) of the stabilizing element (920) and the guide rails (97) of the sealing element (910) can be pushed into one another in the longitudinal direction (X) to realize the sealing device (9).

18. System according to one of claims 16 or 17, characterized in that the stabilizing element (920) forms at least a part of the overhanging section which is designed to be resilient in the vertical direction (Z) and transverse direction (Y), wherein in particular this part of the overhanging section has actuating sections (93) designed as vertically upwardly projecting projections, by means of which it can be elastically compressed by hand in the transverse direction (Y) without tools, wherein in particular the sealing element (910) forms a further part (92) of the overhanging section.

19. System according to claim 18, characterized in that the overhanging section comprises a fastening section which is at least partially formed by the stabilizing element (920) and which, in the operating state, presses the holding sections (14) of the support rail (1) against them, ensuring a fixation of the mounting body (2) on the support rail (1).

20. System according to claim 19, characterized in that the fastening section has a spring section (902) and a contact section (901), with which it presses against the holding section (14) assigned to it with a vertical and in particular transverse pressing force in the operating state, wherein the contact section (901) is formed by the stabilizing element (920), wherein in particular the contact section is designed as an inclined surface section, so that in the operating state it increasingly transversely overlaps the holding section (14) assigned to it along the vertical direction (Z) towards the support rail base (11).

21. System according to claim 20, characterized in that the spring section (902) has a plurality of partial spring sections arranged one behind the other along the longitudinal direction (X) and spaced from one another, which are connected to one another in particular by a section formed by the stabilizing element (920) and / or the contact section (901), wherein in particular the stabilizing element (920) at least predominantly forms the spring section (902).

22. System according to one of claims 19 to 21, characterized in that the sealing element (910) has at least one engagement section (911) which engages in a recess (9120) formed by the stabilizing element (920), in particular within the overhang section, wherein in particular the engagement section (911) has a plurality of projection sections arranged one behind the other along the longitudinal direction (X) and spaced apart from one another, and the recess (9120) has a plurality of recess sections arranged one behind the other along the longitudinal direction (X) and spaced apart from one another, wherein in each case one of the projection sections is arranged in one of the recess sections.

23. System according to one of claims 19 to 22, characterized in that in the operating state, the overhang section for ensuring the fixation of the mounting body (2) to the support rail (1) rests exclusively by means of a contact surface on the holding sections (14), wherein the contact surface is completely formed by the stabilizing element (920) and in particular is spaced from the sealing element (910).

24. System according to one of claims 15 to 23, characterized in that the overhanging section has at least two sealing wall sections (960), each of which is assigned to one of the mounting body side walls (22), wherein in the operating state each sealing wall section (960) extends along the longitudinal direction on the mounting body side wall (22) assigned to it, projecting vertically beyond the latter, wherein in particular the system is designed at least according to claim 20 and the sealing wall sections (960) of the respective sealing device (9) along the longitudinal direction (X) between the contact section (901) and the longitudinal side of the sealing device (9) associated Mounting body (2), wherein in particular the sealing wall section (960) projects vertically beyond the sealing section.

25. System according to one of claims 16 to 24, characterized in that the sealing section has a sealing tab which runs continuously between the mounting body side walls (22) and is vertically spaced from the mounting body base (21), and / or in that the sealing section forms a sealing lip (91) which, within the vertical extent of the mounting body (2), runs continuously both along the mounting body base (21) and along the two mounting body side walls (22) in a plane running perpendicular to the longitudinal direction (X) and in particular forms at least a section of a longitudinal end of an arrangement formed by the mounting body (2) and the sealing device.

26. System according to one of claims 16 to 25, characterized in that the sealing tab is spaced apart from the sealing lip (91) in the vertical direction, wherein in particular the sealing tab projects beyond the mounting body side walls with its side facing away from the mounting body base (21) in the vertical direction.

27. System according to claim 26, characterized in that the sealing tab runs in a meandering manner within its transverse extension relative to a plane running perpendicular to the vertical direction (Z), wherein in particular the sealing tab runs with its upper end at the same vertical height over its meandering course.

28. System according to claim 27, characterized in that the sealing tab has transverse end regions (95) and a central region (94) through which its transverse end regions (95) are continuously connected to one another, wherein in particular the central region (94) extends over at least 60%, in particular at least 70%, in particular at least 80% of the entire transverse extension of the sealing device (9), wherein in particular the sealing tab runs in a meandering manner in its transverse end regions and runs over its meandering course with its upper end at the same vertical height as in the central region (95) and / or the sealing tab runs in a straight line in its central region in the plane running perpendicular to the vertical direction (Z).

29. System according to claim 28, characterized in that the sealing tab has absolute transverse ends, each of which is formed by a tab web (96) which runs straight in the plane perpendicular to the vertical direction (Z) and / or projects vertically beyond a section adjacent to it.

30. System according to one of claims 16 to 29, characterized in that the mounting body side walls (22) at their ends facing away from the mounting body base (21) on their sides facing the respectively opposite mounting body wall (22) each have a projection (23) facing downwards towards the mounting body base (21), wherein the sealing device (9), in particular the sealing element (910) of the sealing device (9), has for each of the projections (23) a receptacle associated with it and the projections (23) are arranged sealingly against the sealing device (9) in the receptacle associated with them, wherein in particular the receptacle has two partial receptacles (991, 992) spaced apart from one another along the longitudinal direction (X), between which a sealing web (99) is arranged, which in the operating state runs along one of the mounting body side walls (2) assigned to it.

31. System according to claim 1 and one of claims 16 to 30, characterized in that the sealing devices (9) of the two adjacent mounting bodies (2) in the operating state bear sealingly against the sealing device, wherein the mounting bodies (2) bear with the sealing sections of their sealing devices against one of the sealing surfaces in each case and in particular the sealing device has a receptacle for receiving at least part of the sealing tab.

32. System according to claim 31, characterized in that in the operating state, the contact sections (901) of the sealing devices (9) which are assigned to the two adjacent mounting bodies (2) are spaced apart from one another along the longitudinal direction (X) by a longitudinal spacing region, wherein the sealing device, in particular at least the fixing element (7) of the sealing device, runs within the longitudinal spacing region, in particular is enclosed by the spring sections (902) of the two sealing devices (9) on their longitudinal sides.

33. System according to claim 32 with reference to claim 24, characterized in that the sealing wall sections (960) extend over a same longitudinal extension section as the sealing device.

34. System according to one of claims 15 to 33, characterized in that at least one of the mounting bodies (2) is provided with a sealing device (9) on each of its two longitudinal sides, wherein in the operating state this mounting body (2) is fixed to the support rail (1) along the vertical direction (Z) by the overhanging sections of these sealing devices (9).

35. System according to one of claims 15 to 34, characterized in that at least one of the mounting bodies (2) is held on the support rail (1) in the operating state by at least two actuatable retaining springs (20) and furthermore by at least one inactuatable retaining spring, in particular a plurality of inactuatable retaining springs, wherein at least one of the inactuatable retaining springs is formed by one of the sealing devices (9), wherein in particular the mounting body (2) can be released from the support rail (1) starting from the operating state by actuating the actuatable retaining springs (20) and by applying a vertical force applied between the support rail (1) and the mounting body (2) to overcome a spring holding force generated by the at least one inactuatable retaining spring.

36. System, in particular according to one of the preceding claims, for realizing a longitudinally elongated luminaire, the system comprising at least one mounting body (2) and at least one support rail (1) with a U-shaped cross-section, 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 support rail width walls (12) extend away from the support rail base (11) in the vertical direction (Z), wherein the mounting body (2) in an operating state of the system is arranged on the open side of the support rail (1) and is fixed to the support rail (1) and encloses an interior space together with the support rail (1), wherein the mounting body (2) has a mounting body base (21) extending in the transverse direction between two Mounting body side walls (22), wherein each of the support rail side walls (12) has a holding section (14) on its side facing the respective opposite support rail side wall (12) and in the operating state the mounting body (2) is fixed to the holding sections (14), wherein on the mounting body base (21) between the mounting body side walls (22) a retaining spring (20) is fixed, which has on each of its two transverse sides a retaining arm (220) which can be resiliently deflected in the transverse direction (Y), wherein in the operating state, each of the retaining arms (220) engages behind the retaining section (14) of the support rail side wall (12) assigned to the respective retaining arm (220) and presses vertically against it, while pressing the mounting body side walls (22) against the retaining sections (14) to fix the mounting body (2) to the support rail (1), wherein at least one of the mounting body side walls (22) has an opening through which an actuating element (5) is inserted, which is connected to one of the retaining arms (220) to enable a deflection of the retaining arm (220) in the transverse direction (Y) starting from the operating state by means of an actuation of the actuating element (5) from outside the interior,wherein a seal is provided between the actuating element (5) and the opening provided in the mounting body wall (22), which seal ensures a seal of the actuating element (5) against the opening in the operating state, characterized in that the seal (52) is attached to the holding arm (220) or to the actuating element (5).

37. System according to claim 36, characterized in that the seal (52) moves relative to the mounting body (2) upon actuation of the actuating element (5), wherein in particular by actuating the actuating element (5) the seal (52) is detached from the mounting body (2) at least in sections and the seal is thereby removed.

38. System according to one of claims 36 or 37, characterized in that the seal (52) is integrated in one piece into the actuating element (5), in particular by injection molding onto a base body (57) of the actuating element (5), and / or is locked in the operating state with the base body of the actuating element (5) or with the actuating element (5).

39. System according to one of claims 36 to 38, characterized in that the actuating element (5) is locked to the holding arm (220) in the operating state.

40. System according to one of claims 36 to 39, characterized in that the seal (52) is held in a locked manner on the holding arm (220) in an assembled state in which the retaining spring (20) is fastened to the mounting body (2) and, starting from the assembled state, can be locked to the actuating element (5) by inserting the actuating element (5) into the opening of the mounting body (2) and, in particular, can then be released from the holding arm (220) while remaining locked to the actuating element (5) upon realization of the operating state.

41. System according to one of claims 36 to 40, characterized in that between the holding arm (220) and the actuating element (5) and / or between the actuating element (5) and the opening in the operating state, a play in the longitudinal direction is provided, in particular of at least 0.5 mm, in particular of at least 1 mm, wherein the actuating element (5) rests with a stop (56) against a stop surface (226) of the holding arm (220) and the seal (52) is held pressed between the holding arm (220) and an inner side of the mounting body side wall (22) and thereby the seal (52) is pressed with a sealing side (53) against the inner side of the mounting body side wall (22).

42. System according to one of claims 36 to 41, characterized in that the seal (52) is resiliently compressible in the transverse direction (Y).

43. System according to one of claims 36 to 42, characterized in that the seal (52) has a bellows-like section which is compressible in the transverse direction.

44. System, in particular according to one of the preceding claims, for realizing a longitudinally elongated luminaire, the system comprising a plurality of mounting bodies, a plurality of support rails (1) 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 width walls (12) extend away from the support rail base (11) in the vertical direction (Z), and comprising at least one coupling with a U-shaped cross-section, which has a coupling base (301) extending in the transverse direction (Y) between two coupling side walls (302) and an open side opposite the coupling base (301) in the vertical direction (Z),wherein in an operating state of the system the support rails (1) with their U-shaped cross-sections are arranged one behind the other in the longitudinal direction (X) and adjacent support rails (1) in the longitudinal direction (X) are connected by the coupling (3), are fixed to one another, wherein the coupling (3) in the operating state extends with a respective longitudinal section in each of the two adjacent support rails (1), and the adjacent support rails (1) are each arranged with one of their longitudinal ends within a connecting region of the coupling (3) and with these longitudinal ends facing one another, and wherein in the operating state the mounting bodies (2) are arranged one behind the other in the longitudinal direction (X) on the open side of one of the support rails (1) in each case and are fixed thereto and, together with the support rails (1), enclose an interior space, characterized in that the system comprises a plurality of sealing inserts (31), wherein in the operating state one of the sealing inserts (31) is arranged on each of the coupling side walls (302) and extends beyond the connecting region.

45. System according to claim 44, characterized in that the coupling (3) is made of a metal sheet and the sealing inserts (31) are made of an elastically deformable plastic, wherein in particular the sealing inserts are plate-shaped and are arranged on an inner side of the coupling (3) in the operating state.

46. ​​System according to one of claims 44 or 45, characterized in that the sealing inserts (31) each have a fastening arrangement which comprises projections (311) and / or recesses of the respective sealing insert (31), and the coupling side walls (302) each have a holding arrangement corresponding to the fastening arrangement which comprises projections and / or recesses of the respective coupling side wall (302), wherein in the operating state the fastening arrangement is elastically compressed and with the Holding arrangement is pressed.

47. System according to one of claims 44 to 46, characterized in that the coupling (3) has a plurality of openings in its coupling side walls (302) which, in the operating state, are closed by the sealing inserts arranged on the coupling side walls, wherein in particular a scraper spring (30) penetrates from an inner side of the coupling (3) to the outside through at least some of these openings.

48. System, in particular according to one of the preceding claims, for realizing a longitudinally elongated luminaire, the system comprising a plurality of mounting bodies (2) and a plurality of support rails (1) with a U-shaped cross-section, 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 support rail width walls (12) extend away from the support rail base (11) in the vertical direction (Z),wherein, in an operating state of the system, the support rails (1) with their U-shaped cross sections are arranged one behind the other in the longitudinal direction (X) and are fixed to one another, and the mounting bodies (2) are arranged one behind the other in the longitudinal direction (X) on the open side of each of the support rails (1) and are fixed to this and, together with the support rails (1), enclose an interior space, wherein two adjacent support rails (1) are sealingly connected to one another by means of a sealing sleeve (6), characterized in that the sealing sleeve (6) has a sealing base (61) and two sealing legs (62) forming a U-shaped cross section of the sealing sleeve (6) and is arranged adjacent to both support rails (1) on the outside thereof, wherein the support rails, (1) each form with each of its two support rail side walls (12) a projection on the outside thereof, which projection is spaced from the absolute vertical ends of the support rail side wall (12), wherein the sealing sleeve (6) has on each of its sealing legs (62) a holding projection (63) which in the operating state engages behind one of the projections of the support rail (1) to realize a vertical pressing force against this projection, wherein in particular the holding projection (63) with its transverse end facing the support rail side wall (12) in the operating state is removed by less than 10% of a total transverse width of the sealing sleeve (6) from an outside of the sealing leg (62) assigned to it facing away from the support rail side wall (12) in the operating state and / or the holding projection (63) by at least 10%in particular at least 20% of a total vertical height of the sealing sleeve (6) is spaced from a vertical end of the sealing sleeve (6) formed by the sealing base (61).

49. System according to claim 48, characterized in that the sealing base (61) has a central transverse region, at the two transverse ends of which an angled region is provided, over which the sealing base (61) extends with its outer side both in the vertical direction (Z) and in the transverse direction (Y), wherein the sealing legs (62) are arranged at an end of one of the angled regions facing away from the central transverse region and extend from there in the vertical direction away from the sealing base (61), and / or that the sealing sleeve (6) engages vertically behind the support rail (1) only at its support rail base (11), wherein in particular the sealing sleeve (6) extends in the operating state in the vertical direction (Z) with its vertical end facing away from the sealing base at most up to the vertical end of the support rail (11) facing away from the support rail base (11).

50. System according to one of claims 48 or 49, characterized in that the holding projections (63) are locked in the operating state with the projection of the support rail (1) assigned to them in such a way that they overlap with them both over a vertical section and over a transverse section, wherein in particular a vertical extension of the vertical section is less than one tenth of a transverse extension of the transverse section.

51. System according to one of claims 48 to 50, characterized in that the sealing sleeve (6) can be elastically snapped onto two adjacent support rails (1) that are already fastened to one another to realize the operating state. which is compressible in the transverse direction.

52. A luminaire made from a system according to any one of the preceding claims.

53. Sealing device of a system according to one of the preceding claims.

54. Web element (8) of a system according to one of claims 10 to 51.

55. Fixing element (7) of a system according to one of claims 10 to 51.

56. Sealing device of a system according to one of claims 15 to 51.

57. Arrangement comprising the actuating element (5) and the seal (52) of a system according to one of claims 36 to 51.

58. Sealing sleeve of a system according to one of claims 48 to 51.

59. Sealing insert of a system according to one of claims 44 to 51.

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