EP3653927B1 - Luminaire with cover held with an adapter - Google Patents

Description

The invention relates to a lamp according to the preamble of claim 1 and a method for realizing such a lamp.

Generic lights include a device mount, a light source arranged on a mounting side of the device mount, and a light-transmitting cover fastened to the device mount. The cover can be transparent or translucent, for example, and can include, in particular, optical structures for directing light, for example prismatic structures or lens structures, or can be designed as a diffuser. A generic lamp to which the invention relates, as well as its device mount and its cover, are designed to be elongated in a longitudinal direction, with their extension in the longitudinal direction preferably being at least three times, in particular at least five times, in particular at least ten times their extensions in a vertical direction and/or or along a transverse direction, the vertical and transverse directions being orthogonal to each other and being orthogonal to the longitudinal direction. A luminous space, in which the light source is arranged, is formed between the cover and the equipment carrier. The lamp is designed to emit light, which is emitted by the light source, through the cover, so that the cover is a light emission side of the lamp forms. The cover is fixed to the device carrier within an extension of the device carrier along a transverse direction, which is perpendicular to the longitudinal direction, by means of a form-fitting connection, with the mounting side of the device carrier preferably being designed as a vertical side of the device carrier, which thus forms a vertical end of the device carrier, where vertical direction, transverse direction and longitudinal direction are perpendicular to each other. The form-fitting connection can be a latching connection and/or a rail connection, for example. A rail connection is to be understood as meaning that a device is provided that extends in the longitudinal direction, which preferably extends over at least 10%, in particular at least 20% of the length of the longitudinal extension of the lamp, and which has a cross section perpendicular to the longitudinal direction that is constant over its longitudinal extension, wherein A form-fit connection is realized along this device, via which the cover is fixed to the equipment carrier.

Such generic elongate luminaires to which the invention relates are provided in order to efficiently illuminate large spaces in the most cost-effective manner possible. Such lights should be as inexpensive as possible to implement and as simple as possible. Various options are known in the prior art for fixing the cover to the equipment carrier. For example, embodiments are known in which a mounting rail is provided, to which the device mount and the cover are fixed. In such embodiments, the cover encloses the device carrier and the cover in the transverse direction, and the cover is fixed to the mounting rail outside of the device carrier with respect to the transverse direction. However, such a structure requires a high degree of complexity, and the provision of a correspondingly complex mounting rail is only under under certain conditions of use and associated with high costs. In addition, it is known in the prior art to provide a latching element on the equipment carrier itself, which corresponds to the cover in such a way that the cover can be attached directly to the equipment carrier. Furthermore, covers are known in the prior art that have individual latching devices distributed over their longitudinal extension, which are designed to engage in cutouts of the equipment carrier in certain longitudinal sections for the direct fixing of the covers to the equipment carrier. Out DE 20 2014 100 922 U1 It is also known to provide the latching element on adapters that are fastened to the device carrier and press a circuit board onto the device carrier. Out DE 10 2012 214 334 A1 is known to provide a U-shaped, as invisible as possible adapter in the longitudinal direction between LEDs, which engages behind the equipment rack and to which a cover is attached. DE 10 2018 101 487 U1 , DE 20 2015 104 042 U1 , EP 2 924 333 A1 , EP 2 886 945 A1 , DE 20 2015 104 043 U1 , DE 10 20214 112, 657 A1 and KR 2016 0053526 A disclose further prior art solutions for attaching the cover to the equipment rack.

The solutions known from the prior art each have various disadvantages. For example, if the device mount is designed specifically for corresponding covers, it is usually not possible to manufacture the device mount in large quantities, since only one specific luminaire design can be implemented with the respective device mount. In the case of a targeted configuration of the cover with latching devices provided in longitudinal sections, cost-effective production of the cover is made more difficult, for example this makes it difficult to produce the cover made impossible by means of extrusion processes. In addition, the connection techniques between the cover and the gear tray are often complicated, which prevents the entire manufacturing process of the luminaire from being automated. Furthermore, the attachment of the cover to the device carrier often results in the provision of attachment means which impair the light emission from the light source through the cover. In addition, there is a fundamental problem in the prior art of ensuring that the cover is fixed to the equipment carrier and that it is sufficiently stable, while at the same time using as few components as possible and a manufacturing process that is as cost-effective as possible to ensure a luminaire with radiation properties that can be adjusted as specifically as possible.

The object of the invention is to provide a lamp that at least partially eliminates at least one of the disadvantages described above or at least one of the problems described above that occur in lamps of the generic type.

As a solution to the problem on which the invention is based, the invention proposes a solution with the features according to claim 1 . The lamp according to the invention comprises a device carrier, a light source arranged on a mounting side of the device carrier and a light-transmitting cover fastened to the device carrier. The lamp, the equipment carrier and the cover are elongated in a longitudinal direction. A luminous space, in which the light source is arranged, is formed between the cover and the equipment carrier. The lamp is designed to emit light through the cover. The cover is fixed to the device carrier within an extension of the device carrier that extends along a transverse direction by means of a form-fitting connection. The lamp according to the invention can have further features which are explained above in connection with lamps of the generic type. The lamp according to the invention also includes an adapter which is fixed to the equipment carrier and which forms a first part of the form-fitting connection which corresponds to a second part of the form-fitting connection provided for the cover. According to the invention, the first part and the second part rest against one another in a form-fitting manner in order to form the form-fitting connection. It has turned out to be particularly preferable to produce the adapter from plastic, for example by means of extrusion or injection molding processes. By providing a The luminaire can be produced in a particularly simple and cost-effective manner in a form-fitting connection, which is realized via a first part provided on an adapter and a second part provided on the cover. The adapter particularly preferably extends along the transversal direction exclusively within the transversal area of extent of the device carrier. Due to the adapter, the cover is not fixed directly to the device carrier but indirectly, namely via the adapter on the device carrier. Correspondingly, the fixation on the device carrier takes place in two stages, so that the adapter can be specifically aligned with the device carrier and at the same time can be specifically aligned with the cover. By providing an adapter, complicated profiling of the equipment carrier and/or cover and the configuration of connecting devices in sections on the cover itself can be avoided. In addition, the two-stage fixation of the cover on the equipment carrier makes it possible to take particular account of the automation process to be used to manufacture the light, if possible. By providing a form-fitting connection between the adapter and the cover, the cover can also be fixed to the adapter in a particularly simple manner. The form-fitting connection is such that the cover is fixed to the equipment carrier at least with respect to the vertical direction and with respect to the transverse direction due to the form-fitting connection. The form-fit connection and thus the first part formed by the adapter and the second part formed by the cover particularly preferably extend over at least 50%, in particular at least 70% of the longitudinal extent of the lamp. The adapter is particularly preferably fixed to the equipment carrier via a further form-fitting connection, with a first part of this further form-fitting connection being formed by the adapter and a second part of this further one Positive connection is formed by the equipment carrier. By providing a form-fitting connection for fixing the adapter to the equipment carrier, the assembly of the adapter on the equipment carrier can be particularly simplified.

In one embodiment, the adapter is attached to the equipment carrier by means of a connection which can be implemented by a fixing movement of the adapter relative to the equipment carrier and which can be reversibly released in particular by a releasing movement opposite to the fixing movement. Connecting devices which correspond to one another and which can be brought into engagement with one another by the fixing movement in order to implement the connection are preferably provided on the adapter and equipment carrier. Fixing movement and release movement preferably take place in a direction perpendicular to the vertical direction. The connection can be designed, for example, as a clamp or snap-in connection. This connection can be designed, for example, as a form-fitting connection, in particular as a form-fitting and force-fitting connection at the same time, for example by providing a correspondingly designed clamping or snap-in connection. In this embodiment, the mountability of the adapter on the equipment carrier is particularly simplified and particularly favorable for an automation process. This is because no separate fixing elements, such as rivets or screws, need to be provided to realize the connection between the adapter and the device mount, which typically slows down the production of the lamp and thus makes it more expensive. The adapter is particularly preferably attached to the equipment carrier exclusively via such a connection and thus without the provision of external fixing elements.

In one embodiment, the positive connection is as Trained rail connection. This rail connection is realized by the adapter and/or by the cover. This means that the cover and/or adapter each have a rail, ie a fixing device extending in the longitudinal direction with a constant cross section, which can be inserted into a corresponding fixing device of the other element of the cover or adapter. Particularly preferably, the first part formed by the adapter and/or the second part formed by the cover has a constant cross section perpendicular to the longitudinal direction over at least 80%, in particular at least 90%, in particular 95% of its length, with the first part and /or the longitudinal length of the second part extends over at least 50%, in particular at least 70%, in particular at least 80%, in particular at least 90% of the longitudinal length of the cover.

In one embodiment, the mounting side faces the cover and is vertically opposite the cover, the adapter being arranged on the mounting side and extending at least in sections in the longitudinal direction along the illuminant and in a transverse direction that is perpendicular to the vertical direction and to the longitudinal direction, is arranged next to the light source. The adapter is preferably arranged transversely next to the illuminant in said longitudinal section at both transverse ends of the illuminant. In one embodiment, the adapter can also extend at least in sections along the transverse direction over the light source, for example for optically influencing and/or fixing the light source. In general, it is preferably provided that the adapter bears against the illuminant and is therefore in contact with the illuminant, in particular at both transverse ends of the illuminant abuts and extends from each of the transverse ends of the illuminant to the cover. The adapter therefore preferably rests against both the lamp and the cover, with the adapter forming a portion of the first part of the form-fitting connection on both transverse sides of the lamp. The formation of a portion of the first part of the form-fitting connection on both transverse sides of the illuminant enables the cover to be fixed particularly well on the device mount via the adapter. Therefore, arranging the adapter with its sections, which each form a portion of the first part for the form-fit connection, on both transverse sides of the lamp makes sense in any case, even if the adapter is not in contact with the respective transverse ends but, when arranged, on a specific one Transversal side from which this transversal side forming transversal end is spaced. Because the adapter rests against the light source, i.e. is in contact with the light source, in particular in a transverse end section of the light source, which is in particular 20% of the transverse extension length of the adapter, starting from the respective absolute transverse end, the adapter can simultaneously fix the light source contribute to the equipment carrier and, in particularly preferred embodiments, sometimes also contribute to directing the light emitted by the light source.

In one embodiment, the illuminant comprises a circuit board on which at least one LED is arranged. In the exemplary embodiment described above, for example, the adapter can rest against the circuit board. In one embodiment, both transversal ends of the circuit board are each vertical, at least in sections, between the mounting side of the equipment carrier and an adapter subsection assigned to the respective transversal end arranged. The respective partial adapter section particularly preferably presses the respective transverse end of the circuit board against the equipment carrier. As a result, the circuit board can be fixed to the equipment carrier in a particularly advantageous manner by means of the adapter. Provision is particularly preferably made in this embodiment for the adapter to influence less than 10% of the light emitted by the illuminant before it reaches the cover. In one embodiment, the first part of the form-fitting connection is formed by the two adapter sections, with the two adapter sections each extending transversely beyond the circuit board, namely beyond the transverse end of the circuit board assigned to the respective adapter section and thus transversely next to the circuit board and the cover is arranged with the formed by them second part of the positive connection between the mounting side of the device carrier and a first of the adapter sections and between the mounting side and a second of the adapter sections. By providing two partial adapter sections at the two transverse ends of the circuit board, the circuit board can be fixed to the equipment carrier and the cover can be fixed to the equipment carrier in a particularly advantageous manner. The two partial adapter sections are particularly preferably designed as two separate components, so that the adapter is not a one-piece component but has at least the two partial adapter sections as separate components. As a result, particularly simple assembly can be promoted, and in addition, influencing the light emitted by the illuminant by the adapter can be avoided as far as possible. In one embodiment, at least one of the partial adapter sections has a stepped cross section perpendicular to the longitudinal direction, the stepped cross section comprising a first transverse section that rests against the circuit board and a second Transverse section that forms a portion of the first part of the form-fitting connection and that rests against the cover, wherein in particular the second transverse section is spaced further vertically from the mounting side of the equipment carrier than the first transverse section. This can preferably apply to both partial adapter sections. The fact that the first transverse section rests on the circuit board and the fact that the second transverse section is vertically further away from the mounting side of the device carrier than the first transverse section, in combination with the arrangement of the second part formed by the cover, allows the form-fitting connection between the mounting side and the second transverse section to be formed a fixation of cover and light source, especially circuit board, be particularly favored on the equipment rack. This is because the cover can reach under the second transverse section of the partial adapter section due to the vertical spacing of the second transverse section from the mounting side of the device carrier, while the first transverse section presses against the circuit board from above. Accordingly, the adapter subsection can simultaneously apply contact pressure against the second part of the form-fitting connection formed by the cover in the direction of the mounting side of the device carrier and contact pressure from the first transverse section on the circuit board in the direction of the mounting side of the device carrier. The partial adapter section particularly preferably has a third transverse section, which is provided between the first and second transverse section in relation to the transverse direction, with the partial adapter section being fastened to the device carrier within the transverse extent of the third transverse section. As a result, a leverage effect of the adapter and thus a fixation of the cover and circuit board by the adapter can be particularly favored if, as explained, the cover with its second part of the form-fitting connection between the mounting side of the device carrier and the second transverse section and the first transverse section rests against the circuit board, with the cover preferably extending with the second part of the form-fitting connection formed by it below the second transverse section in relation to the vertical direction and the circuit board in relation to the vertical direction below of the first transverse section. The circuit board particularly preferably has a cutout, the adapter being fixed to the equipment carrier within the cutout and the third transverse section thus extending at least partially within the horizontal extent of the circuit board. This can enable a particularly stable attachment of the circuit board on the mounting side.

In one embodiment, the adapter runs vertically from the mounting side to the side of the device carrier that is opposite the mounting side and engages behind the device carrier. The adapter is thus arranged with a section on the side of the device carrier that is vertically opposite the mounting side and overlaps with the device carrier on this side in a direction perpendicular to the vertical direction, so that it engages behind it. This design ensures that the adapter can be fixed to the equipment carrier in a particularly simple and effective manner. In one embodiment, the adapter reaches around the device carrier at the side, relative to the transverse direction, past the device carrier. In one embodiment, the adapter runs through at least one, in particular several cutouts of the device carrier, starting from the mounting side to the side vertically opposite the mounting side. Preferably, the recess in the device carrier is designed as a passage surrounded circumferentially by a recess edge within the horizontal extent of the device carrier. Especially the adapter preferably also runs through at least one cutout provided in the circuit board, with this cutout provided in the circuit board preferably being provided only on one edge of the circuit board and thus not being circumferentially surrounded by a cutout edge.

In one embodiment, the adapter has a web on each transversal side of the illuminant next to the illuminant, ie transversally next to the illuminant, in particular transversally offset to the illuminant, which extends vertically through a recess provided in the apparatus carrier. Particularly preferably, a projection is arranged on the web, starting from the web in a projection direction running perpendicular to the vertical direction, which preferably runs along the longitudinal direction, which in the operating position engages behind the equipment carrier on its side opposite the mounting side, i.e. perpendicular to the vertical direction overlaps the equipment carrier, and which is arranged on the opposite side of the equipment carrier from the mounting side. Particularly preferably, the circuit board has a recess which is assigned to the web and in which the web is arranged. As explained, the recess can be located on an edge of the circuit board. The recess in the circuit board can have the advantage that the circuit board is fixed by the adapter by means of a leverage effect, the fixing of the lever taking place at the level of the circuit board, which is particularly advantageous for stability. The adapter particularly preferably has a plurality of webs on each transverse side of the illuminant, which are spaced apart from one another in the longitudinal direction. Particularly preferred are two adjacent webs in the longitudinal direction, which are arranged on the same transversal side of the illuminant by less than 20%, in particular by less than 10% of the length of the longitudinal extension of the device carrier from each other spaced. By providing a web with a corresponding projection, the adapter can reach behind the equipment carrier in a particularly simple and reliable manner. Particularly preferably, the web together with the projection is designed to correspond to the recess in the equipment carrier in such a way that the web together with the projection can be passed vertically through the recess provided in the equipment carrier and the adapter can then be passed through a hole relative to the equipment carrier in the direction of the projection Fixing movement on the device carrier can be fixed. For example, the fixation can be done by clamping or latching. The corresponding configuration enables a particularly high degree of automation in the manufacturing process of the lamp, since the adapter with its web and the projection can be inserted into the recess starting from the mounting side and can be fastened to the equipment carrier by the fixing movement. Of course, after the fixing movement has been carried out, an adapter section bears against the mounting side of the device carrier, so that both a force is generated between the device carrier and this adapter section and a force is generated between the device carrier and the projection. The device carrier particularly preferably has a tongue which, starting from an edge section of the cutout, extends at least partially within the cutout, the tongue being deflectable relative to the edge section of the cutout, in particular being deflectable reversibly, in particular around an axis running perpendicular to the vertical, in particular about an axis perpendicular to the vertical and perpendicular to the projection direction. In an operating position, the tongue is arranged next to the web in the projection direction to prevent the adapter from becoming detached from the equipment carrier. In an assembly position, the tongue is deflected relative to the operating position in such a way that it leaves the recess free so far that the web together with the projection can be carried out through the recess. Particularly preferably, the tongue is movable both from the operating position to the mounting position and from the mounting position to the operating position only by applying an external force, so that the tongue in this embodiment does not change elastically from one position to the other. In general, the equipment carrier is preferably made from sheet metal, in particular by forming sheet metal. This generally preferred embodiment of the device carrier is particularly advantageous in the described embodiment comprising a tongue which, starting from an edge section of the recess, extends at least partially across the recess. This is because the tongue can be realized by a simple stamping process and can be connected to the mounting side via an edge section and correspondingly have the reversible deflectability described. The tongue ensures in a particularly simple and reliable manner that the adapter does not become detached from the device carrier unintentionally after it has been fixed to the device carrier.

In one embodiment, the adapter has two separate elements, each of which forms a portion of the first part of the positive connection, a first of the two elements being arranged on a first transverse side of the lamp and a second of the two elements being arranged on a second, the first opposite transverse side of the lamp is arranged. The two separate elements can each form one of the two above-mentioned partial adapter sections provided in a preferred exemplary embodiment. More preferably, the two elements are spaced from each other in the transverse direction by a transverse distance. The transverse distance is preferably at least 50% of the transverse extension length of the lighting means. The illuminant is particularly preferred designed to emit at least 80%, in particular at least 90% of the light it emits in a beam angle perpendicular to the longitudinal direction, which lies within the transversal distance of the two elements. This particularly preferably ensures that the two elements of the adapter affect at most a small proportion of the light emitted by the illuminant, for example with regard to light color, light intensity emerging from the cover or direction of light emission. According to the invention, the adapter has an optically effective transverse section which is located in the transverse direction within a beam angle illuminated by the illuminant and which is designed to change the direction of the light emitted by the illuminant before the light reaches the cover.

According to the invention, at least 70%, in particular at least 80%, of the light emitted by the illuminant passes through the optically effective transverse section before it reaches the cover. The optically effective transverse section particularly preferably extends over the entire emission angle of the lamp, so that all of the light emitted by the lamp passes through the optically effective transverse section before it reaches the cover. By integrating such an optically effective transversal section in the adapter, the adapter can fulfill two functions at the same time: On the one hand, it facilitates the installation of a cover on the gear tray, and on the other hand, it influences the light emitted by the illuminant, thereby making a contribution to specifying the light distribution characteristics of the light can afford. The optically effective transverse section can be located, for example, in the transverse direction between the two partial adapter sections described with reference to the above exemplary embodiment.

In one embodiment, in which the illuminant has a circuit board, the device carrier has a plurality of circuit board fixing tongues protruding vertically from its mounting side towards the cover, a first group of which is arranged on a first transverse side of the circuit board and a second group on a second transverse side of the Board is arranged to fix the board relative to the device carrier along the transverse direction. The circuit board fixing tongues are particularly preferably bent in a fixing position in such a way that they press the circuit board vertically against the equipment carrier. Particularly preferably, the board surface section against which the board fixing tongues rest is insulated. Such insulation can be implemented, for example, by applying an insulating layer to a conductive layer provided on the top side of the circuit board, or for example by providing a recess in a conductive layer provided on the top side of the circuit board at the level of the circuit board fixing tongues. By providing circuit board fixing tongues, a movement of the circuit board along the transverse direction relative to the device carrier can be prevented in a particularly simple manner, since the circuit board fixing tongues can form a transverse stop for the circuit board. By bending the circuit board fixing tongues, the circuit board can be vertically fixed to the equipment carrier in a particularly simple manner. Particularly preferably, the circuit board fixing tongues in the lamp exert a contact pressure acting along the vertical direction on the circuit board, by means of which the circuit board is pressed against the device mount. The frictional connection between the circuit board and the device carrier that is thereby guaranteed counteracts a displacement of the circuit board relative to the device carrier along the longitudinal direction. Particularly preferably, a multiplicity of sinker fixing tongues are provided on both transversal sides of the sinker, with this multiplicity of sinker fixing tongues is distributed over the length of the longitudinal extent of the circuit board in such a way that the circuit board is pressed against the equipment carrier over a significant portion of its longitudinal extent, in particular over more than 50%, in particular more than 80% of its areal extent, in order to fix the circuit board relative to the equipment carrier for avoidance a relative movement of the circuit board to the device carrier along the longitudinal direction. By arranging the circuit board fixing tongues on both transverse sides of the circuit board, a particularly reliable avoidance of a relative movement of the circuit board relative to the device carrier along the transverse direction is also ensured. By distributing the circuit board fixing tongues along the length of the circuit board and ensuring that the circuit board is pressed against the equipment carrier by a contact pressure that is correspondingly distributed over the surface area of the circuit board, thermal stressing of the circuit board relative to the equipment carrier can be avoided in particular, which occurs when the Circuit board is only fixed to the device carrier at a few points that are clearly spaced apart from one another in the longitudinal direction, since there can then be different thermal expansions of the circuit board and device carrier between these points over the longitudinal extension of the circuit board and device carrier, which can then lead to corresponding stresses.

The invention also relates to a set for realizing a lamp according to the invention. The set includes a device carrier with a mounting side on which a light source is arranged, and a light-transmissive cover that can be fastened to the device carrier. The device carrier and the cover are elongated in a longitudinal direction and are designed to correspond to one another in such a way that they can be connected to one another in such a way that a luminous space is formed between the cover and the device carrier, in which the light source is arranged and from the light source emitted light can be radiated through the cover. The cover can be fixed within an extension of the device carrier along a transverse direction by means of a form-fitting connection on the device carrier. The set comprises at least one adapter, which has an optically effective transverse section and which can be fixed to the device mount in order to implement the lamp in such a way that it forms a first part of the form-fitting connection, which corresponds to a second part of the form-fitting connection provided on the cover, wherein to form the positive connection, the first part and the second part are in positive contact with one another, and that the optically effective transverse section is located in the transverse direction within a beam angle illuminated by the illuminant and is designed to change the direction of the light emitted by the illuminant before the Light reaches the cover, and that at least 70% of the light emitted by the illuminant passes through the optically effective transverse section before it reaches the cover. In one embodiment, the set according to the invention comprises a number of different adapters, each of which has the properties mentioned corresponding to the device mount and the cover, but which differ from one another in other features which are apparent from the above-mentioned embodiments of a lamp according to the invention. Accordingly, the set is preferably designed so that at least two different lights can be realized with the set, which differ in their adapter, preferably only in their adapter. The set particularly preferably includes a first adapter, which has an optically effective transverse section, and a second adapter, which has two separate elements, each of which forms a portion of the first part of the form-fitting connection, with a first of the two elements on a first transverse side of the Illuminant is arranged and wherein a second of the two elements is arranged on a second transverse side of the light source, opposite the first, the set being designed for the realization of two different lights, of which a first light comprises the first adapter as the only adapter and a second light of which as the only one Adapter includes the second adapter. The set can have further features which are apparent to the person skilled in the art in view of the different embodiments of a luminaire according to the invention explained above. The set according to the invention brings with it the particular advantage that a high degree of modularity is achieved, which can simplify and reduce the cost of producing a lamp. In particular, the inventors have recognized that the set according to the invention can be used, for example, to realize a lamp with injection-molded optics if the adapter is designed as having an optically effective section, and that, on the other hand, a cost-effective cover produced by extrusion processes can be used on the same equipment carrier. by using an optically ineffective or optically effective adapter to connect the cover to the equipment carrier.

The invention also relates to a method for realizing a lamp. In a first method step, an adapter is fastened to a device carrier on which an illuminant is arranged, and in a second method step a cover is fixed to the adapter. In one embodiment, the second method step takes place after the first method step, but the cover can also be fixed to the adapter first and then this structural unit comprising the adapter and cover can be attached to the equipment carrier, so that the second method step then takes place before the first. the a track guide attached to the adapter, a first part of which is formed by the adapter and a second part of which is formed by the cover. The adapter has an optically effective transverse section and is attached to the equipment carrier in such a way that the optically effective transverse section is located in the transverse direction within a beam angle illuminated by the illuminant and is designed to change the direction of the light emitted by the illuminant before the light reaches the cover, and at least 70% of the light emitted by the illuminant passes through the optically effective transverse section before it reaches the cover. The method according to the invention can have further features which are apparent to the person skilled in the art from the explanations of the various embodiments of a luminaire according to the invention.

The disclosure also relates, not claimed, to a method for fixing an adapter on an equipment carrier, wherein in a first method step the adapter with a web, on which a projection extending away from the web in a projection direction is arranged, is passed through a recess provided in the equipment carrier and in a second, on the first Method step following method step, the adapter is fixed by a relative to the device carrier along the projection direction taking place fixing movement on the device carrier, in particular is clamped or latched. Particularly preferably, in a third method step following the second method step, a tongue arranged on the device carrier is bent into the recess next to the web to prevent the adapter from becoming detached from the device carrier by means of a release movement towards the device carrier, which takes place in the opposite direction to the fixing movement. The tongue is generally preferably bent into the recess on the side of the web which is opposite the projection along the projection direction. The method according to the invention can have further features which are apparent to the person skilled in the art from the explanations of the various embodiments of the lamp according to the invention.

The invention is explained in more detail below using two exemplary embodiments with reference to five figures.

Figur 1:

in einer schematischen Prinzipdarstellung eine Ansicht einer ersten Ausführungsform einer erfindungsgemäßen Leuchte;

Figur 2:

in schematischen Prinzipdarstellungen Aufsichten auf einen Querschnitt von Elementen der ersten Ausführungsform gemäß Figur 1;

Figur 3:

in einer schematischen Prinzipdarstellung eine Ansicht auf einen Ausschnitt der ersten Ausführungsform gemäß Figur 1;

Figur 4:

in verschiedenen schematischen Prinzipdarstellungen Ansichten von Elementen der ersten Ausführungsform gemäß Figur 1;

Figur 5:

in verschiedenen schematischen Prinzipdarstellungen verschiedene Ansichten einer zweiten Ausführungsform einer erfindungsgemäßen Leuchte und ihrer Elemente.

Show it:

Figure 1:

in a schematic basic representation a view of a first embodiment of a lamp according to the invention;

Figure 2:

in schematic representations of principles, top views of a cross section of elements of the first embodiment according to FIG figure 1 ;

Figure 3:

in a schematic representation of principle a view of a section of the first embodiment figure 1 ;

Figure 4:

in various schematic representations of principles of elements of the first embodiment according to figure 1 ;

Figure 5:

in different schematic representations of principle different views of a second embodiment of a lamp according to the invention and its elements.

In figure 1 , figure 2 including the figures 2a , 2 B and 2c , figure 3 and figure 4 including the figures 4a and 4b are shown in schematic representations of principles of a first embodiment of a system according to the invention. The system according to the invention shown in these figures has an equipment carrier 1 and a cover 2 . The cover 2 is held on the equipment carrier 1 via an adapter 3 . A circuit board 4 with LEDs 41 is also attached to the adapter 3 . Adapter 3, circuit board 4 and cover 2 are each fixed to the mounting side of device carrier 1. Together with the cover 2, the adapter 3 forms a form-fitting connection, via which the cover 2 is fixed to the equipment carrier 1. For this purpose, the adapter 3 has two partial adapter sections 30 which each form a portion of the first part of the form-fitting connection, in the present case together forming the first part of the form-fitting connection. The cover 2 has two partial cover sections 20 which together form the second part of the positive connection, the first part and the second part interacting to form the positive connection. In the present case, the form-fitting connection is designed as a rail connection, so that the first part and the second part interact in a rail-like manner. The through the Cover subsections 20 formed second part two in the transverse direction Y spaced and opposite grooves, in each of which engages a spring formed by the first part of the form-fitting connection, which is formed by the adapter subsections 30. In the present case, and for a light according to the invention in general and thus also advantageous in abstraction from the present exemplary embodiment, the second part of the form-fitting connection, which is formed by the cover 2 , has two partial cover sections 20 . Each of the two partial cover sections 20 is arranged on a side wall of the cover 2 , which presses against the mounting side of the equipment carrier 1 with its lower vertical end. Each of the partial cover sections 20 is connected to the respective side wall via a leg that extends vertically upwards, starting from the respective side wall. Starting from a rest position, in which the partial cover section 20 is in a specific vertical position, this leg can be elastically deflected if the partial cover section 20, which forms part of the second part of the form-fitting connection, is deflected vertically downwards, starting from the rest position. A corresponding configuration is particularly advantageous because the elastic deflectability by means of the cover sections 20 can exert a pressing force on the adapter 3, ie on the adapter section 30, which can be useful, for example, for fixing the circuit board 4 via the adapter 3, as further below explained with reference to the second embodiment.

In the exemplary embodiment described, the adapter 3 has an optically effective transverse section 33, which in the present case is arranged in the transverse direction Y between the two partial adapter sections 30 and extends in the transverse direction Y over the illuminant extends. In the present exemplary embodiment, the illuminant has a circuit board 4 with LEDs 41 arranged thereon. The LEDs 41 are arranged on the mounting side of the equipment carrier 1 . The circuit board 4 also has connecting terminals 42 which, starting from the mounting side, penetrate through the equipment carrier 1 and are arranged on the side of the equipment carrier 1 which is vertically opposite the mounting side. Because the adapter 3 extends with its optically effective transverse section 33 over the light source and is thus located in the transverse direction Y within a beam angle illuminated by the light source, the adapter 3 fulfills the function of fixing the cover 2 on the equipment carrier 1 in addition to its function Function of an optical element that influences the direction of the light emitted by the lamp before it reaches the cover 2.

In the described embodiment, the adapter 3, as shown in the Figures 3 and 4 including the figures 4a and 4b visible, fixed to the device carrier 1 via a further form-fitting connection. For this purpose, the adapter has webs 34, which extend through a recess 10, which is provided in the device carrier 1, starting from the mounting side of the device carrier 1 along the vertical direction Z through the device carrier 1 to the side of the device carrier 1 opposite the mounting side The webs 34 also extend through recesses provided in the circuit board and are thus arranged at least in sections within the horizontal extent of the circuit board 4 . A projection 35 is provided on the web 34 and, starting from the web 34 , extends away along a projection direction, which in the present case runs parallel to the longitudinal direction X. in the in figure 3 shown operating position of the projection 35 engages behind the device carrier 1 at its the side vertically opposite to the mounting side. In this in figure 3 In the operating position shown, a tongue 11 is also arranged within the recess 10, through which the web 34 extends. Starting from an edge portion of the recess 10, this tongue 11 extends into the recess 10 and lies on the side of the web 34 opposite the projection 35 with respect to the projection direction, which is generally advantageous. Out figure 3 it can be seen that the tongue 11 effectively prevents the adapter 3 from becoming detached from the equipment carrier 1 . The adapter 3 is fixed to the equipment carrier 1 in that the web 34 is first passed through the recess 10 along the vertical direction Z together with the projection 35, the tongue 11 being pushed out of its in Figure 4a rest position shown is deflected so that the web 34 can pass through the recess 10 together with the projection 35 . Subsequently, the adapter 3 is moved relative to the device carrier 1 via a fixing movement taking place along the projection direction, as a result of which the adapter 3 is fastened to the device carrier 1 . The tongue 11 is then bent back into its resting position, whereby it moves into the in figure 3 The position shown prevents the adapter 3 from becoming detached from the equipment carrier 1. In figure 3 the side of the equipment carrier 1 opposite the mounting side is shown together with the projection 35 and the web 34 of the adapter 3 . In Figure 4a the mounting side of the device carrier 1 is shown, but for explanation purposes without the adapter 3.

Out figure 4 including the figures 4a and 4b it can also be seen how circuit board fixing tongues 12 are provided on the equipment carrier 1, with which the circuit board 4 can be reliably fixed on the equipment carrier 1. The circuit board fixing tongues 12 are arranged laterally next to the circuit board 4 in the transverse direction Y and prevent a Moving the circuit board 4 relative to the device carrier 1 with respect to the transverse direction Y. Starting from the in Figure 4b shown position the Platinenfixierzunge 12 are still bent to the device carrier 1 and the top of the board 4 to press the board 4 to the mounting side of the device carrier 1, whereby the board is also fixed with respect to the longitudinal direction relative to the device carrier. From the Figures 3 and 4 It can be seen that the device carrier 1 with Platinenfixierzunge 12 and tongues 11 can be particularly preferably made of sheet metal. Because in this case the respective tongues 11 or platinum fixing tongues 12 can be produced in a simple manner by stamping and forming processes.

In figure 5 including the Figures 5a , 5b , 5c and 5d a second embodiment of a lamp according to the invention is shown. Similar components are marked with identical reference numbers. Essential difference between the embodiment according to the Figures 1 to 4 and according to the embodiment figure 5 consists in the different design of the adapter 3. While the adapter 3 according to the first, in the Figures 1 to 4 illustrated embodiment is formed in one piece, there is the adapter 3 in the embodiment according to figure 5 from two separate elements 31, 32. The two elements 31, 32 each form an adapter section 30 of the adapter 3 from. Each of the elements 31, 32 has a step-shaped cross section perpendicular to the longitudinal direction X. Correspondingly, each of the elements 31, 32 has a first transverse section 312, 322, which rests against the plate 4, and a second transverse section 313, 323, which forms part of the first part of the positive connection and rests on the cover 2. The second transverse section 313, 323 is further spaced along the vertical direction Z from the mounting side of the equipment carrier 1 than the first Transverse section 312, 322. This first transverse section 312, 322 presses vertically from above onto the circuit board 4 in the direction of the mounting side of the device carrier 1. In the vertical direction Z between the second transverse section 313, 323 and the mounting side of the device carrier 1 is a section of the cover 2 arranged, in the present case the leg of the cover 2 explained above, the cover 2 having a partial cover section 20 at the level of the respective second transverse section 313, 323, which forms part of the first part of the form-fitting connection, which forms part of the second part of the form-fitting connection. Both elements 31, 32 are via webs 314, 324 as the embodiment according to Figures 1 to 4 explained attached to the device carrier 1. The corresponding webs 314 and the transverse sections 312, 313 of the first separate element of the adapter 3 are in particular from the figures 5c and 5d apparent. Due to the leg running between the partial cover section 20 and the side wall of the cover 2 and the associated elasticity, the cover 2 in the exemplary embodiment shown exerts a pressing force upwards on the second transverse section 313 of the separate element 31, which, due to the fixing of the element 31, over the web 314 and the projection arranged thereon on the equipment carrier 1, a contact pressure is exerted vertically downwards on the circuit board 4 by the first transverse section 312. This makes a particularly advantageous contribution to fixing the circuit board 4 to the equipment carrier 1 . The corresponding function is also in particular in Figure 5b recognizable. From the Figures 5a and 5b It can also be seen in particular that the LEDs 41 of the circuit board 4 are located in a transverse section in which the adapter 3 does not overlap the illuminant comprising circuit board 4 and LEDs 41, since the two separate elements 31, 32 are spaced apart from one another by a transverse distance . Correspondingly, at the lamp according to the embodiment figure 5 the illuminant emits light through the cover 2 by means of its LEDs 41 without the light being significantly influenced by the adapter 3 . The inventors have recognized that the provision of such a two-part adapter 3, which does not appreciably influence the light emitted by the light source, is particularly well suited to exerting contact pressure on the circuit board 4 with the adapter. This is because, unlike in the case of optically effective adapters 3, in this case a deformation of the adapter 3 caused by the contact pressure does not lead to undesired optical effects.

reference list

1

equipment carrier

2

cover

3

adapter

4

circuit board

10

recess

11

tongue

12

board fixing tongue

20

cover section

30

adapter section

31

element

32

element

33

transversal section

34

web

35

head Start

41

LEDs

42

terminal block

312

first transversal section

313

second transverse section

314

web

322

first transversal section

323

second transverse section

324

web

X

longitudinal direction

Y

transverse direction

Z

vertical direction

Claims (16)

1. Luminaire comprising a device carrier (1), a light source arranged on a mounting side of the device carrier (1) and a light-transmitting cover (2) fastened to the device carrier (1), wherein the luminaire, the device carrier (1) and the cover (2) are of elongate construction in a longitudinal direction (X), wherein a luminous space is formed between the cover (2) and the device carrier (1), in which the light source is arranged, and the luminaire is designed to emit light through the cover (2), wherein the cover (2) is fixed to the device carrier (1) within an extension of the device carrier (1) along a transverse direction (Y) by means of a form-fit connection, wherein an adapter (3) is fixed to the device carrier (1), which adapter (3) forms a first part of the form-fit connection which corresponds to a second part of the form-fit connection provided on the cover (2), the first part and the second part bearing against one another in a form-fitting manner in order to form the form-fit connection, the adapter (3), in particular, being produced from plastic,
   characterized in that
   the adapter (3) has an optically effective transverse segment (33) which is located in the transverse direction (Y) within a radiation angle illuminated from the illuminant and which is designed to change the direction of the light emitted by the illuminant before the light reaches the cover (2), and in that at least 70% of the light emitted by the illuminant passes through the optically effective transverse segment before it reaches the cover.
2. Luminaire according to claim 1,
   characterized in that
   the adapter (3) is fastened to the device carrier (1) by means of a connection, in particular a clamping or latching connection, which can be produced by a fixing movement of the adapter (3) relative to the device carrier (1) and, in particular, can be reversibly released by a releasing movement opposite to the fixing movement.
3. Luminaire according to claim 2,
   characterized in that
   the form-fit connection is designed as a rail connection, wherein in particular the first part formed by the adapter (3) and/or the second part formed by the cover (2) has a constant cross-section perpendicular to the longitudinal direction (X) over at least 80% of its longitudinal extension length.
4. Luminaire according to any one of the preceding claims, characterized in that
   the mounting side points to the cover (2) and is vertically opposite the cover (2), the adapter (3) being arranged on the mounting side and extending at least in sections in the longitudinal direction (X) along the illuminant and being arranged next to the illuminant in a transverse direction (Y) which is perpendicular to the vertical direction (Z) and to the longitudinal direction (X).
5. Luminaire according to any one of the preceding claims, characterized in that
   the adapter (3) rests against the illuminant, in particular against both transverse ends of the illuminant, and extends from each of the transverse ends of the illuminant as far as the cover (2), the adapter (3) forming a portion of the first part of the form-fit connection on both transverse sides of the illuminant.
6. Luminaire according to any one of the preceding claims, characterized in that
   the illuminant comprises a circuit board (4) on which at least one LED (41) is arranged, the two transverse ends of the circuit board (4) each being arranged vertically, at least in longitudinal sections, between the mounting side of the device carrier (1) and an adapter part section (30) assigned to the respective transverse end, and in particular the respective adapter part section (30) pressing the respective transverse end of the circuit board (4) against the device carrier (1).
7. Luminaire according to claim 6,
   characterized in that
   the first part of the form-fit connection is formed by the two adapter part sections (30), the two adapter part sections (30) each extending transversely beyond the circuit board (4) and the cover (2) being arranged with the second part of the form-fit connection formed by it between the mounting side of the device carrier (1) and each of the two adapter part sections (30).
8. Luminaire according to claim 7,
   characterized in that
   at least one of the adapter part portions (30) has a step-shaped cross-section perpendicular to the longitudinal direction (X), the step-shaped cross-section comprising a first transverse segment (312, 322), which abuts against the board (4), and a second transverse segment (313, 323), which forms a portion of the first part of the form-fit connection and bears against the cover (2), wherein in particular the second transverse segment (313, 323) is spaced vertically further from the mounting side of the device carrier (1) than the first transverse segment (312, 322).
9. Luminaire according to any one of the preceding claims, characterized in that
   the adapter (3) extends vertically from the mounting side to the side of the device carrier (1) opposite the mounting side and engages behind the device carrier (1).
10. Luminaire according to claim 9,
    characterized in that
    the adapter (3) has, on each transverse side of the illuminant next to the illuminant, a web (34) which extends vertically through the device carrier (1) through a recess (10) provided in the device carrier (1), a projection (35) being arranged on the web (34), which projection (35) extends from the web (34) in a projection direction perpendicular to the vertical direction (Z), in particular along the longitudinal direction (X), which projection (35), in the operating position, engages behind the device carrier (1) on its side opposite the mounting side, in particular the printed circuit board (4) having a recess which is assigned to the web (34) and in which the web (34) is arranged.
11. Luminaire according to claim 10,
    characterized in that
    the web (34) together with the projection (35) can be passed vertically through the recess (10) in the device carrier (1) and the adapter (3) can then be fixed to the device carrier (1) by a fixing movement to be performed relative to the device carrier (1) in the direction of projection.
12. Luminaire according to claim 11,
    characterized in that
    the device carrier (1) has a tongue (11) which extends from an edge portion of the recess (10) at least partially within the recess (10), the tongue (11) being deflectable relative to the edge portion of the recess (10) and, in an operating position, being arranged next to the web (34) in the projection direction for preventing the adapter (3) from becoming detached from the device carrier (1), wherein in an assembly position the tongue (11) is deflected relative to the operating position and leaves the recess (10) free to such an extent that the web (34) with the projection (35) can be passed through the recess (10), wherein in particular the tongue (11) can be moved both from the operating position into the assembly position and from the assembly position into the operating position only by applying an external force.
13. Luminaire according to any one of the preceding claims, characterized in that
    the adapter (3) comprises two separate elements (31, 32), each of which forms a portion of the first part of the form-fit connection, a first of the two elements (31) being arranged on a first transverse side of the illuminant and a second of the two elements (32) being arranged on a second transverse side of the illuminant opposite the first one, in particular the two elements (31, 32) being spaced apart from one another in the transverse direction (Y) by a transverse distance, and the illuminant being designed to emit at least 80%, in particular at least 90%, of the light emitted by it at a radiation angle perpendicular to the longitudinal direction (X) which lies within the transverse distance of the two elements (31, 32).
14. Luminaire according to any one of the preceding claims, characterized in that
    the luminaire has a printed circuit board (4) and the device carrier (1) has a plurality of printed circuit board fixing tongues (12) projecting vertically towards the cover (2) from its mounting side, of which a first group is arranged on a first transverse side of the circuit board (4) and a second group is arranged on a second transverse side of the circuit board (4) for fixing the circuit board (4) relative to the device carrier (1) along the transverse direction (Y), the circuit board fixing tongues (12) in particular being bent in a fixing position in such a way that they press the circuit board (4) vertically against the device carrier (1).
15. Set for implementing a luminaire according to any of the preceding claims, the set comprising a device carrier (1) with a mounting side on which a light source is arranged, and a light-transmitting cover (2) which can be fastened to the device carrier (1), the device carrier (1) and the cover (2) being elongated in a longitudinal direction (X) and being designed to correspond to one another in such a manner that they can be connected to one another in such a way that a luminous space is formed between the cover (2) and the device carrier (1), in which luminous space the light source is arranged, and light emitted by the light source can be radiated through the cover (2), the cover (2) being fixable to the device carrier (1) within an extent of the device carrier (1) along a transverse direction (Y) by means of a form-fit connection,
    characterized in that
    the set comprises at least one adapter (3) which has an optically active transverse segment (33) and which can be fixed to the device carrier (1) in such a way that it forms a first part of the form-fit connection which corresponds to a second part of the form-fit connection provided on the cover (2), the first part and the second part bearing against one another in a form-fitting manner in order to form the form-fit connection and in that the optically effective transverse segment (33) is located in the transverse direction (Y) within a radiation angle illuminated by the illuminant and is adapted to change the direction of the light emitted from the illuminant before the light reaches the cover (2), and in that at least 70% of the light emitted from the illuminant passes through the optically effective transverse segment before it reaches the cover.
16. Method for implementing a luminaire, wherein, in a first method step, an adapter (3) is fastened to a device carrier (1), on which an illuminant is arranged, and wherein, in a second method step, a cover (2) is fixed to the adapter (3), the cover (2) being fastened to the adapter (3) via a form-fitting connection, in particular a rail guide, a first part of which is formed by the adapter (3) and a second part of which is formed by the cover (2), wherein the adapter (3) has an optically effective transverse segment (33) and is fastened to the device carrier (1) in such a way that the optically effective transverse segment (33) is located in the transverse direction (Y) within a radiation angle illuminated by the illuminant and is designed to change the direction of the light emitted from the illuminant before the light reaches the cover (2), and wherein at least 70% of the light emitted from the illuminant passes through the optically effective transverse segment before it reaches the cover.

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