LIGHTING DEVICE COMPRISING A HOLDING MODULE AND A DETACHABLY FASTENED LIGHTING MODULE

Abstract

The invention relates to a lighting device, in particular for a motor vehicle, comprising a lighting module comprising at least one semiconductor light source and a holding module, wherein the lighting module and the holding module are repeatedly detachably connected to one another.

Description

The present invention relates to a lighting device, in particular for a motor vehicle, comprising a lighting module comprising at least one semiconductor light source and a holding module, wherein the lighting module and the holding module are reproducibly and detachably connected to one another. The invention also relates to a corresponding lighting module and a corresponding holding module.BACKGROUNDIn the field of vehicle lighting, replaceable lighting means have proven to be essential components, in particular with regard to the simple and cost-effective exchangeability in the case of defects. Classic lighting means such as halogen and xenon lamps allow vehicle holders to restore the lighting functionality quickly and easily when needed. However, LED-based lighting means are also increasingly used for vehicle lighting. LED-based lighting means are distinguished by their high energy efficiency, luminosity and low probability of failure. In particular, on account of their low probability of failure, LED-based lighting means have hitherto been designed in such a way that in the event of a defect the entire vehicle lighting, for example the entire headlight, had to be replaced. Accordingly, standardized solutions for the manual replacement of LED-based lighting means are lacking in this field.Accordingly, there is a need to provide a lighting device, in particular for a motor vehicle, or a lighting means, which / does not counteract at least one of the problems mentioned.SUMMARY OF THE INVENTIONThis need is addressed with the subject matter of the independent claims. Developments and embodiments of the proposed principle are specified in the dependent claims.The inventors propose an LED lighting means for, for example, a motor vehicle headlight, which in the event of a defect can also be exchanged by a layman without great effort and without having to visit a workshop. The lighting means and a corresponding holding device are designed in such a way that the holding device securely holds the lighting means at a position provided for this purpose during an intended use of the lighting means, but that the lighting means can be easily detached from the holding device in the event of a defect, for example. For this purpose, the holding device and the lighting means comprise support surfaces, contact regions and fastening elements which are arranged and configured such that, in the mounted state, the lighting means cannot slip and tilt with respect to the holding device, but can be removed from the holder device in a simple and repeatable manner by means of an actuation of one of the fastening elements. In addition, the bearing surfaces, contact regions and fastening elements are arranged and configured in such a way that simple and positionally accurate mounting and fastening of the lighting means is possible.According to a first aspect, a lighting module is proposed which is designed to be arranged in a repeatably detachable manner in a holding module. According to a further aspect, it is also proposed to provide a holding module which is designed to receive a lighting module in a repeatably detachable manner. In addition, a lighting device, in particular for a motor vehicle, comprising a lighting module and a holding module is proposed, wherein the lighting module and the holding module are connected to one another in a repeatably detachable manner according to a key lock principle.The lighting module according to a first aspect comprises a base body and at least one semiconductor light source which is arranged on the base body. The at least one semiconductor light source can comprise, for example, one or more light emitting diodes (LEDs). However, the lighting module can also have a plurality of semiconductor light sources which are arranged on the base body. The lighting module can accordingly be an LED-based module.The base body has three mutually parallel support surfaces on an underside of the base body and protruding from the underside. The three support surfaces can be arranged in the same plane or in spaced planes running parallel to one another. The three support surfaces are arranged and designed to be arranged on at least one reference surface of a holding module. In particular, the number of reference surfaces corresponds to the number of different planes in which the support surfaces are arranged. In the case that all three support surfaces are arranged in the same plane, these are designed to be arranged on a reference surface of the holding module, in the case that two of the three support surfaces are arranged in the same plane and one of the support surfaces is arranged in a parallel offset plane, these are designed to be arranged on two reference surfaces of the holding module, and in the case that all support surfaces are arranged in parallel offset planes, these are designed to be arranged on three reference surfaces of the holding module. The lighting module can thereby be configured to be arranged on the at least one reference surface adapted thereto in a statically determined manner via three defined bearing surfaces.The base body also has, on an upper side of the base body opposite the underside, at least one contact region which is designed to cooperate with at least one first fastening element of the holding module under the exertion of a force in the direction perpendicular to the bearing surfaces. The at least one contact region can in particular be configured to come into contact with at least one first fastening element of the holding module such that a force is exerted by the at least one first fastening element in the direction perpendicular to the bearing surfaces. The exerted force allows the lighting module to be pressed onto the holding module on the three bearing surfaces.A projection of the at least one contact region or a connecting line between two contact regions perpendicular to the contact surfaces lies within a virtual surface spanned by the three contact surfaces or intersects the latter. The at least one contact region or a plurality of contact regions are correspondingly arranged in such a way that a force acting in the contact region(s) acts in the direction perpendicular to the bearing surfaces in such a way that the lighting module is pressed uniformly onto the bearing surfaces. This can be achieved, on the one hand, if a projection of the at least one contact region or of a plurality of contact regions perpendicular to the contact surfaces lies within the virtual surface spanned by the three contact surfaces, or if the projection of a plurality of contact regions perpendicular to the contact surfaces lies outside the virtual surface spanned by the three contact surfaces, but in such a way that they are arranged symmetrically around the virtual surface. As a result, a possible leverage effect of a force acting outside the virtual surface can be prevented.The base body furthermore has at least a first side surface, a second side surface and a third side surface, which respectively connect the underside of the base body to the upper side of the base body. The side surfaces can be formed by surfaces running essentially perpendicular to the top and bottom sides, but can also run at a different angle du / or in a stepped manner. The second and the third side face can be formed here substantially by mutually opposite outer faces of the base body and in particular run substantially parallel to one another. The at least one first side surface, on the other hand, can connect the second and third side surfaces. In particular, a plurality of first side surfaces may be joined together to the second and third side surfaces.The at least one first side surface is configured to cooperate with at least one first reference element of the holding module such that at least one first direction of movement of the lighting module is restricted within a plane parallel to the support surfaces. For example, the at least one first side face can be configured to cooperate with a first stop of the holding module, wherein the stop restricts a first direction of movement of the lighting module within the plane parallel to the support faces.The second side face is configured to cooperate with at least one second reference element of the holding module such that at least one second direction of movement of the lighting module perpendicular to the first direction of movement is restricted within the plane parallel to the bearing surfaces. For example, the second side face can be configured to cooperate with a second stop of the holding module, wherein the stop restricts a second direction of movement of the lighting module perpendicular to the first direction of movement within the plane parallel to the support faces.The third side face further comprises a first recess configured to cooperate in contact with a second movable fastening element of the holding module such that a respective direction of movement of the lighting module opposite the first and second directions of movement is restricted within the plane parallel to the support surfaces. For example, the third side face or the first recess in the third side face can be configured to cooperate with a movable fastening element of the holding module, wherein the movable fastening element restricts a direction of movement of the lighting module opposite the first and second directions of movement within the plane parallel to the support faces.Accordingly, the lighting module can be designed to be fixed via its side surfaces in such a way that a movement of the lighting module within the plane parallel to the contact surfaces is restricted or prevented and at the same time to be fixed via its upper and lower sides in such a way that a movement of the lighting module perpendicular to the plane parallel to the contact surfaces is restricted or prevented.According to some aspects, the at least one first side surface is configured to cooperate with the at least one first reference element of the retaining module such that the at least one first side surface is centered with respect to the at least one first reference element. For example, the at least one first side surface can be formed by a bulge from the base body or by a second recess in the base body. In a corresponding manner, the first reference element of the holding module can be configured to cooperate with the bulge or the second recess in order to effect a centering of the at least one side surface with respect to the at least one reference element.According to some aspects, the base body is formed by a material with good thermal conductivity and forms in particular a cooling body for the lighting module or a heating generated in the at least one half-liter light source. For this purpose, the base body can have a multiplicity of cooling ribs which extend from the upper side and / or underside. For example, the base body can be formed by a metal and can be produced, for example, by means of bending molds.According to some aspects, the base body is formed integrally by a single element, but the base body can also be composed of a plurality of parts, for example an element made of a material with good thermal conductivity, which forms a heat sink for the lighting module or a heating generated in the at least one half-liter light source, and for example encapsulation of the heat sink by means of, for example, a plastic. The side surfaces of the base body, the recesses and the contact surfaces and contact regions can be formed, for example, by encapsulation. However, this is not to be understood as limiting, and the base body can also be composed of more than two and in particular also of different elements, wherein only one element or a plurality of different elements can form the side surfaces of the base body, the recesses and the bearing surfaces and contact regions.According to some aspects, the at least one semiconductor light source is arranged on a projection of a connecting line between two contact regions perpendicular to the support surfaces. For example, the at least one semiconductor light source may be arranged on the projection of an axis of rotation formed by two contact regions. This has the advantage that, in the case of a rotation of the lighting module about this axis of rotation, the position of the at least one semiconductor light source relative to the holding module is not significantly changed, but rather only the emission angle of the light emitted by the at least one semiconductor light source. This may be preferred since a position displacement of the at least one semiconductor light source with respect to the holding module or a reflector module arranged downstream of the lighting module may have a substantial and undesired influence on the emission characteristic of the emitted light, while a change only in the emission angle may be tolerable.According to some aspects, the at least one contact region is formed by a cutout on the upper side of the base body or comprises at least one further cutout. The cutout can serve the purpose that the at least one first fastening element interacts with the cutout in such a way that the fastening element is arranged in the cutout and holds the lighting module in position. Alternatively or additionally, the at least one contact region can be formed by an elevation on the upper side of the base body or can comprise at least one elevation. An elevation can serve, for example, as a stop, to which the at least one fastening element can be fastened. The at least one contact region, on the other hand, can also be formed by a planar surface or comprise a planar surface which does not differ substantially from the upper side of the base body. The at least one contact region can be defined, for example, by a contact surface of the upper side with the at least one first fastening element, but otherwise do not differ significantly from the upper side of the base body. Moreover, according to some aspects, the at least one contact region may comprise a combination of the above embodiments.According to some aspects, the lighting module comprises a fastening means for a reflector module, in particular further recesses in the base body, which recesses are configured to cooperate with a reflector module in order to hold the latter in position with respect to the lighting module or vice versa. For example, further cutout(s) can be provided in the base body, which cooperate with reference element(s) of a reflector module and define a position with respect to one another. The reflector module can be designed to direct a light emitted by the at least one semiconductor light source in a desired direction and / or to shape the light.According to some aspects, the lighting module further comprises a plug element arranged on the base body and electrically coupled to the at least one semiconductor light source. The plug module is configured to cooperate with a corresponding plug counterpart, by means of which a signal and / or a supply current for the at least one semiconductor light source can be provided. A signal and / or a supply current for operating the at least one semiconductor light source can be provided accordingly via the plug element. The plug element can be configured in particular to cooperate repeatably releasably with a corresponding plug counterpart.According to some aspects, the lighting module further comprises a driver circuit and / or a PCB arranged on the base body and electrically coupled to the at least one semiconductor light source. The driver circuit can be designed to provide a desired control of the at least one semiconductor light source. A PCB (printed circuit board) may serve as a carrier for further electronic components and / or the driver circuit and / or the plug element and / or the at least one semiconductor light source. The PCB can serve in particular for the mechanical fastening and electrical connection of the mentioned elements.The holding module according to a further aspect comprises at least one reference surface which is designed to cooperate with three mutually parallel support surfaces which project from an underside of a base body of a lighting module. Depending on whether the three bearing surfaces of the base body of the lighting module are arranged in the same plane or in planes spaced apart from one another and running parallel to one another, the holding module can have one or more reference surfaces running parallel to one another, which are each designed to cooperate with the three bearing surfaces of the base body parallel to one another. In particular, the number of reference surfaces corresponds to the number of different planes in which the bearing surfaces are arranged. In the case that all three bearing surfaces are arranged in the same plane, the holding module comprises a reference surface which is designed to cooperate with the bearing surfaces, in the case that two of the three bearing surfaces are arranged in the same plane and one of the bearing surfaces is arranged in a parallel offset plane, the holding module comprises two reference surfaces which are designed to cooperate in each case with the bearing surfaces within one plane, and in the case that all bearing surfaces are arranged in parallel offset planes, the holding module comprises three reference surfaces which are designed to cooperate in each case with one of the bearing surfaces. The holding module can accordingly have at least one reference surface on which the lighting module can be arranged, in particular in such a way that the lighting module or the base body can be arranged on the at least one reference surface adapted thereto in a statically determined manner via three defined bearing surfaces.The holding module additionally comprises at least one first fastening element which is designed to exert a force in the direction perpendicular to the at least one reference surface on a contact region on an upper side of the base body of the lighting module opposite the underside. The at least one first fastening element can in particular be configured to come into contact with a contact region on the upper side of the base body in such a way that a force is exerted on the base body by the at least one first fastening element in the direction perpendicular to the at least one reference surface. By the exerted force, the lighting module can be pressed on the three bearing surfaces of the base body onto the at least one reference surface of the holding module.A projection of the at least one contact region or a connecting line between two contact regions perpendicular to the contact surfaces lies within a virtual surface spanned by the three contact surfaces or intersects the latter. The at least one contact region or a plurality of contact regions are correspondingly arranged in such a way that a force acting in the contact region(s) acts in the direction perpendicular to the bearing surfaces in such a way that the lighting module is pressed uniformly onto the bearing surfaces. This can be achieved, on the one hand, if a projection of the at least one contact region or of a plurality of contact regions perpendicular to the contact surfaces lies within the virtual surface spanned by the three contact surfaces, or if the projection of a plurality of contact regions perpendicular to the contact surfaces lies outside the virtual surface spanned by the three contact surfaces, but in such a way that they are arranged symmetrically around the virtual surface. As a result, a possible leverage effect of a force acting outside the virtual surface can be prevented.The holding module also comprises at least one first reference element which is designed to cooperate with at least one first side face of the lighting module in such a way that at least one first direction of movement of the lighting module is restricted within a plane parallel to the reference face. Furthermore, the holding module comprises at least one second reference element which is designed to cooperate with a second side face of the lighting module in such a way that at least one second direction of movement of the lighting module perpendicular to the first is restricted within the plane parallel to the reference face. In particular, the first and the second reference element can form a stop for the base body of the lighting module, which stop is intended to restrict or prevent a movement of the lighting module along a first and a second direction perpendicular to the first within a plane parallel to the reference surface.In addition, the holding module comprises a movable second fastening element which is designed to cooperate with a first cutout in a third side face of the lighting module in such a way that in each case a direction of movement of the lighting module opposite the first and the second direction of movement is restricted within the plane parallel to the reference face. For example, the movable second fastening element can be configured to cooperate with a first recess in a third side surface of the lighting module, wherein the movable fastening element restricts a direction of movement of the lighting module opposite the first and the second direction of movement within the plane parallel to the reference surface.Accordingly, the holding module can be configured to fix a lighting module by means of the reference elements and the second fastening element in such a way that a movement of the lighting module within the plane parallel to the reference surface is restricted or prevented and at the same time to fix the lighting module by means of the at least one reference surface and the at least one first fastening element in such a way that a movement of the lighting module perpendicular to the plane parallel to the reference surface is restricted or prevented.According to some aspects, the at least one first reference element, the second reference element and the second fastening element are arranged and configured to restrict or substantially prevent rotation of the lighting module within a plane parallel to the reference surface. In particular, the holding module can be configured to fix a lighting module by means of the reference elements and the second fastening element in such a way that rotation of the lighting module within a plane parallel to the reference surface is restricted or substantially prevented.According to some aspects, the at least one reference surface and the at least one first fastening element are arranged and configured to restrict or substantially prevent rotation of the lighting module about an axis which lies within a plane parallel to the reference surface. In particular, the holding module can be configured to fix a lighting module by means of the at least one reference surface and the at least one first fastening element in such a way that a rotation of the lighting module about an axis which lies within a plane parallel to the reference surface is restricted or substantially prevented.According to some aspects, the at least one first fastening element is configured to be movable, in particular to be elastically movable. In particular, the at least one first fastening element can be designed similar to a snap hook, which deforms elastically when the lighting module is arranged and thereby exerts a force on the base body in the direction perpendicular to the at least one reference surface. Depending on the form of the at least one contact region on the upper side of the base body, the at least one first fastening element can be configured to releasably hook with the at least one contact region on the upper side of the base body. The at least one first fastening element can be designed accordingly to exert a force on the base body in the direction perpendicular to the at least one reference surface and to form a positive connection with the at least one contact region on the upper side of the base body.According to some aspects, the holding module comprises at least two first fastening elements which are configured to exert a force in the direction perpendicular to the at least one reference surface on a respective contact region on the upper side of the lighting module. The at least two first fastening elements can be arranged in such a way with respect to a virtual surface spanned by the support surfaces of the lighting module that their projections are perpendicular to the at least one reference plane or projections of the contact regions between fastening elements and lighting module within the virtual surface, or arranged symmetrically around the virtual surface. This has the purpose that the forces applied to the lighting module in the direction perpendicular to the at least one reference surface bring about a uniform pressure on the lighting module and do not lead to tilting of the lighting module due to lever conditions arising.According to some aspects, the second fastening element comprises a lever configured to repeatably resolve the interaction between the second fastening element and the first recess in the third side surface of the lighting module. In particular, the lever can be designed such that a user of the holding module can easily actuate the lever with, for example, a finger in order to resolve the interaction between the second fastening element and the first cutout in the third side face of the lighting module. In particular, no tool can be necessary for releasing the interaction between the second fastening element and the first recess in the third side face of the lighting module, but only a manually executable pressure on the lever can be sufficient. The lever can be designed in such a way that the release of the cooperation takes place repeatably, i.e. that the release of the cooperation can be carried out multiple times without the second fastening element being damaged or losing its function.According to some aspects, the at least one first reference element is configured to cooperate with the at least one first side surface of the lighting module such that the at least one first side surface is centered with respect to the at least one first reference element. For example, the first reference element of the holding module can be configured to cooperate with a bulge or a second recess of the at least one first side surface in order to effect a centering of the at least one first side surface with respect to the at least one reference element. For this purpose, the at least one first reference element can be formed by at least one pin and / or can have a further cutout which interacts with the at least one first side face of the lighting module in such a way that the at least one first side face is centered with respect to the at least one first reference element.According to some aspects, the holding module comprises two first reference elements, each of which is formed in particular by a pin, the two first reference elements being configured to cooperate with the at least one first side face of the lighting module such that at least one first direction of movement of the lighting module is restricted within the plane parallel to the reference face and such that the at least one first side face is centred with respect to the two first reference elements. In particular, the two first reference elements can be configured to cooperate with two first side surfaces of the lighting module such that a first direction of movement of the lighting module and a second direction perpendicular to the first direction is restricted within the plane parallel to the reference surface and that the first side surfaces are centered with respect to the two first reference elements. For this purpose, the first side surfaces can taper conically towards one another forming a bulge and be arranged between the two first reference elements in such a way that in each case one of the side surfaces interacts with one of the first reference elements. The arrangement of the two first reference elements can have the effect that, on the one hand, a first direction of movement of the lighting module and a second direction perpendicular to the first direction are restricted within the plane parallel to the reference surface and that, on the other hand, the first side surfaces are centred with respect to the two first reference elements.According to some aspects, the at least one first reference element comprises a notch configured to cooperate with the at least one first side surface of the lighting module such that at least one first direction of movement of the lighting module is constrained within the plane parallel to the reference surface and that the at least one first side surface is centered with respect to the at least one first reference element. In particular, the first reference element or its further cutout can be configured to cooperate with two first side surfaces of the lighting module in such a way that a first direction of movement of the lighting module and a second direction perpendicular to the first direction is restricted within the plane parallel to the reference surface and that the first side surfaces are centered with respect to the two first reference elements. For this purpose, the first side surfaces can taper conically towards one another forming a bulge and be arranged in the further recess of the first reference element such that in each case one of the side surfaces interacts with a surface of the recess of the first reference element. The configuration of the cutout and the arrangement of the first reference element can have the effect that, on the one hand, a first direction of movement of the lighting module and a second direction perpendicular to the first direction are restricted within the plane parallel to the reference surface and that, on the other hand, the first side surfaces are centred with respect to the first reference element.According to some aspects, the at least one reference surface and the at least one first fastening element form a rail which is configured such that the lighting module can be inserted into the rail. The rail is configured with sufficient play so that insertion of the lighting module is easily possible. In particular, the rail can be configured such that, when the lighting module or the base body of the lighting module is in contact with the at least one reference surface, a contact between the holding module and the base body of the lighting module is present on the upper side only by the at least one first fastening element.In some aspects, the second reference element is formed by a bulge or a spike. For example, the second reference element can be formed by a bulge within the rail, which is configured to cooperate with the second side surface of the base body of the lighting module.A further aspect relates to a lighting device, in particular for a motor vehicle, comprising a lighting module according to the proposed principle and a holding module according to the proposed principle. The lighting module and the holding module are connected to one another or cooperate in such a way that the lighting module is fixed in a substantially positionally fixed manner with respect to the holding module. Furthermore, the lighting module and the holding module are designed such that the fixing which is substantially fixed in position can be released in a repeatable manner. Accordingly, the lighting module and the holding module are reproducibly and detachably connected to one another.BRIEF DESCRIPTION OF THE DRAWINGSFurther aspects and embodiments according to the proposed principle will become apparent with reference to the various embodiments and examples which will be described in detail in connection with the accompanying drawings. FIG. 1 shows an isometric view of a lighting device according to the proposed principle; FIG. 2 shows a top view of a lighting device according to the proposed principle; FIGS. 3A and 3B show two isometric exploded views of a lighting device according to the proposed principle. FIGS. 4A to 4C each show a plan view of a lighting module according to the proposed principle in cooperation with first reference element(s) of a holding module; FIGS. 5A and 5B show an isometric view of a lighting device according to the proposed principle and a detailed view of the lighting device; FIG. 6 shows a top view of a lighting device according to the proposed principle and three detail views of the lighting device; FIGS. 7A and 7B show, in an isometric view and a plan view of a lighting device according to the proposed principle, schematically the restricted movement directions of a lighting module with respect to a holding module of the lighting device; and FIG. 8 shows a plan view of a lighting device according to the proposed principle schematically the arrangement of contact regions with respect to bearing surfaces of the lighting module of the lighting device.DETAILED DESCRIPTIONThe following embodiments and examples show various aspects and their combinations according to the proposed principle. The embodiments and examples are not always to scale.Likewise, various elements may be depicted as magnified or reduced in order to emphasize individual aspects. It goes without saying that the individual aspects and features of the embodiments and examples shown in the figures can easily be combined with one another without the principle according to the invention being impaired thereby. Some aspects have a regular structure or shape. It should be noted that in practice slight deviations from the ideal shape may occur, but without conflicting with the inventive idea.Moreover, the individual figures, features and aspects are not necessarily shown in the correct size, and the proportions between the individual elements need not be fundamentally correct either. Some aspects and features are emphasized by being magnified. However, terms such as "upper", "above", "lower", "below", "larger", "smaller" and the like are correctly represented with respect to the elements in the figures. Thus, it is possible to derive such relationships between the elements from the images.FIG. 1 shows an isometric view of a lighting device 1 according to the proposed principle, while FIG. 2 shows a plan view of the lighting device 1. In addition, FIGS. 3A and 3B each show an isometric exploded view of the lighting device 1. the lighting device 1, in particular lighting means for a headlight, a tail light or a flashing light for a motor vehicle, comprises a lighting module 2 and a holding module 3, which are connected to one another in a repeatably detachable manner. The lighting module 2 and the holding module 3 are connected to one another or cooperate in such a way that the lighting module 2 is fixed in a substantially positionally fixed manner with respect to the holding module 3. Furthermore, the lighting module 2 and the holding module 3 are designed such that the fixing which is substantially fixed in position can be released in a repeatable manner. Accordingly, the lighting module 2 and the holding module 3 are reproducibly and detachably connected to each other.The lighting module 2 comprises a base body 4 and a semiconductor light source 5, which is arranged on an underside 6 of the base body 4. However, the number of semiconductor light sources 5 is to be understood as exemplary, and a plurality of semiconductor light sources 5 may also be arranged on the underside 6 of the base body 4. In order to be able to emit light to the outside, the holding module has an opening which exposes the semiconductor light source 5. However, the shape, size and position of the opening is to be understood as exemplary and can be adapted as required.The base body 4 has on its underside 6 three mutually parallel support surfaces 7 protruding from the underside. The support surfaces 7 are shown here only by way of example in the form of circles or a section having the form of a feather key groove, in order to identify at which position on the underside the support surfaces 7 can be located. However, the shape, size and position is to be understood as exemplary only and may be adjusted as needed.The support surfaces 7 are designed to be arranged on a reference surface 8 of the holding module 3. In a corresponding manner, the holding module 3 comprises a reference surface 8 which is designed to cooperate with the three mutually parallel support surfaces 7 which project from an underside 6 of the base body 4 of the lighting module 2. In the case shown, the holding module 3 comprises exactly one reference surface 8, on which the three support surfaces 7 are arranged. However, it is also possible for the three support surfaces 7 to be arranged in different planes parallel to one another and for the holding module 3 to have a correspondingly matching number of reference surfaces 8, such that the lighting module 2 can be arranged in such a way that all support surfaces 7 are in contact with a reference surface 8 and fully rest thereon. The shape, size and position of the reference surface 8 shown is again to be understood merely as exemplary and can be adapted as required.The holding module also has two first fastening elements 11 a. The first fastening elements 11 aare configured to be movable, in particular in the form of a snap hook, which deforms elastically when the lighting module 2 is arranged in the holding module and thereby exerts a force in the direction perpendicular to the reference surface 8 on a contact region 10 on an upper side 9 of the base body 4 of the lighting module 2 opposite the lower side 6. The base body 4 accordingly has contact regions 10 on the upper side 9, which contact regions are designed to cooperate with the first fastening elements 11 aof the holding module 3 under the exertion of a force in the direction perpendicular to the bearing surfaces 7.The contact regions 10 are configured here, in particular in the form of two notches or recesses, in such a way that the first fastening elements 11 aare releasably hooked to the contact regions 10 on the upper side 9 of the base body 4. In particular, the first fastening elements 11 aand the contact regions 10 are configured such that the first fastening elements 11 ain the connected state of the holding module 3 and the lighting module 2 exert a force on the base body 4 in the direction perpendicular to the reference surface 8 and enter into a releasable form-fit connection with the contact regions 10 on the upper side 9 of the base body 4.The first fastening elements 11 aare arranged in such a way that the contact regions 10 are produced on the upper side 9 of the base body 4 at positions such that the force exerted by the first fastening elements 11 aon the base body 4 perpendicular to the reference surface 8 does not cause tilting of the base body. This is achieved in that a projection of the contact regions 10 or a connecting line 12 between the contact regions 10 perpendicularly to the reference surface 8 intersects a virtual surface 13 spanned by the three support surfaces 7 of the lighting module 2. This is also illustrated by way of example in a plan view in FIG. 8. In particular, FIG. 8 shows the contact forces F 8, acting in the three contact surfaces 7 in the direction perpendicular to the reference surface 8 and in the direction out of the plane of the drawing, and the virtual surface 13 spanned by the three contact surfaces 7 or the three contact forces F 8 respectively. The forces F 11a acting in the direction perpendicular to the reference surface 8 and in the direction into the plane of the drawing are arranged outside the virtual surface 13 in such a way that their common resulting force acts within the virtual surface 13. Accordingly, no lever conditions occur as a result of a force applied outside the virtual surface 13, and the forces F 11a acting on the upper side 9 of the base body 4 bring about a pressing of the lighting module 2 or of the base body 4 onto the reference surface 8, without the lighting module 2 tilting in the process.In FIG. 8, it is also indicated that the semiconductor light source 5 is arranged on a vertical projection of the connecting line 13 on the underside of the base body. This has the background that a possible tilting of the lighting module 2 takes place in the case of an absence of contact between all bearing surfaces 7 and the reference surface 8, but in the case of full contact between the first fastening elements 11 aand the upper side 9 of the base body 4 around the connecting line 13 (or z-axis), such that an arrangement of the semiconductor light source 5 on a perpendicular projection of the connecting line 13 on the lower side of the base body substantially only leads to a tilting of the semiconductor light source 5, but does not lead to a change in position of the semiconductor light source 5 in relation to the holding module 3, However, this does not lead to a change in position of the semiconductor light source 5 with respect to other components such as, for example, a reflector module, which is not illustrated.The base body 4 also has first side surfaces 14 a, a second side surface 14 band a third side surface 14 c, which respectively connect the underside 6 of the base body 4 to the upper side 9 of the base body 4. The second and third side surfaces 14 b, 14 care formed on opposite sides of the base body 4 in the case shown, while the first side surfaces 14 atogether connect the second and third side surfaces 14 b, 14 cto one another. The base body can also have one or more fourth side surfaces which in turn are opposite the first side surfaces and which likewise connect the second and third side surfaces 14 b, 14 cto one another. The first side surfaces 14 aform a front side of the base body 4 in the case shown, while the second and third side surfaces 14 b, 14 cform sides of the base body 4.In the case shown in FIGS. 1 to 3B, the first side surfaces 14 aare defined by an obliquely tapering front region of the base body 4, which has a second cutout 16 bat its tip. This second recess 16 bis in this case V-shaped and defines two first side surfaces which taper to the inside in the direction of the base body 4 in an acute / oblique manner.The first side surfaces 14 a, in particular the first side surfaces formed by the second recess 16 b, are configured to cooperate with a first reference element 15 aof the holding module 3 such that at least one first direction of movement of the lighting module 2 and in the case shown also a second direction of movement of the lighting module 2 perpendicular to the first is restricted within a plane parallel to the support surfaces 7. In particular, the holding module has a first reference element 15 ain the form of a cylindrical pin which serves as a stop for the first side faces 14 aformed by the second cutout 16 b. The pin correspondingly forms a first stop which interacts with the first side faces 14 a, which are formed by the second cutout 16 b, when the holding module 3 and the lighting module 2 are connected, and restricts a first and a second direction of movement of the lighting module 2 perpendicular to the first within a plane parallel to the bearing faces 7 and to the reference face 8, respectively.The first side surfaces 14 a, in particular the first side surfaces formed by the second recess 16 b, in cooperation with the first reference element 15 ain the form of a cylindrical pin have the effect that the front part of the base body 4 and in particular the first side surfaces 14 aare arranged centered with respect to the first reference element 15 aafter the insertion of the lighting module 2 into the holding module 3. This is because the beveled first side surfaces 14 aand, in particular, one of the beveled first side surfaces 14 abides along the first reference element 15 auntil beveled first side surfaces 14 aare in contact with the first reference element 15 ain a centered manner.The second side face 14 bis furthermore configured to cooperate with a second reference element 15 bof the holding module 3 such that a second direction of movement of the lighting module 2 perpendicular to the first direction of movement is restricted within the plane parallel to the bearing surfaces 7. In particular, the holding module 3 has a second reference element 15 ain the form of a semicircular bulge, which serves as a stop for the second side surface 14 b. The bulge correspondingly forms a second stop which interacts with the second side face 14 b,when the holding module 3 and the lighting module 2 are connected, and restricts a second direction of movement of the lighting module 2 perpendicular to the first within the plane parallel to the bearing surfaces 7 or to the reference surface 8.In addition, the third side face 14 ccomprises a first recess 16 awhich is configured to cooperate with a movable second fastening element 11 bof the holding module 3. In particular, the holding module comprises a second fastening element 11 b, which interacts with the first cutout 16 ain the third side face 14 cof the base body 4 of the lighting module 2 in such a way that in each case a direction of movement of the lighting module opposite the first and the second direction of movement is restricted within the plane parallel to the bearing surfaces 7 or to the reference surface 8. In particular, the second fastening element 11 band the first recess 16 aare configured such that the second fastening element 11 b, in the connected state of the holding module 3 and the lighting module 2, exerts a force on the base body 4 in the direction perpendicular to the third side face 14 cand enters into a releasable form-fitting connection with the first recess 16 a.The second fastening element 11 bhas a lever which is designed to repeatedly resolve the interaction between the second fastening element 11 band the first cutout 16 ain the third side face 14 cof the lighting module 2. In particular, the lever can be designed such that a user of the holding module 3 can easily actuate the lever with, for example, a finger in order to release the interaction between the second fastening element 11 band the first cutout 16 a. The lever can be designed in such a way that the release of the cooperation takes place repeatably, i.e. that the release of the cooperation can be carried out multiple times without the second fastening element 11 bbeing damaged or losing its function.In the embodiment shown, the reference surface 8 and the first fastening elements 11 aform a rail 18 which is configured such that the lighting module 2 can be inserted into the rail 18. The rail 18 is configured with sufficient play so that insertion of the lighting module 2 is easily possible. In particular, the rail 18 is configured such that, when the lighting module 2 or the base body 4 of the lighting module 2 is in contact with the reference surface 8, contact between the holding module 3 and the base body 4 of the lighting module 2 at the top side 9 is effected only by the first fastening elements 11 a. The rail 18 can serve to facilitate insertion of the lighting module 2 into the holding module 3, since an upper and lower boundary is present both in the direction perpendicular to the bearing surfaces 7 and a lateral boundary is present in a direction within the plane of the bearing surfaces 7. The obliquely tapering front region of the basic body 4 and thus the further first side surfaces 14 acan assist in easier insertion, since the first side surfaces can serve as a lateral centering aid for insertion into the rail 18.The base body 4 is furthermore formed by a material with good thermal conductivity and forms a cooling body for the lighting module 2 or a heating generated in the half-liter light source 5. For this purpose, the base body 4 has a multiplicity of cooling ribs which extend from the upper side and the lower side.FIGS. 4A to 4C each show a plan view of a lighting module 2 according to the proposed principle in cooperation with first reference element(s) 15 aof a holding module 3. FIGS. 4A and 4B show an embodiment in which the base body does not have a second recess, but rather a bulge, which interacts with a first reference element 15 afor centering. The first reference element 15 ais exemplarily designed in the form of a cylindrical mandrel having a notch 17 with obliquely converging surfaces, in which the bulge or the first side surface(s) 14 aengage. The first side face(s) 14 ais / are configured such that interaction with the notch 17 in the first reference element 15 aon insertion of the lighting module 2 into the holding module 3 brings about a centering of the first side faces 14 awith respect to the first reference element 15 a. According to the embodiment shown in FIG. 4A, the first side face 14 acooperating with the notch 17 can be embodied as semicircular or parabolic and in particular such that, when the lighting module 2 is inserted into the holding module 3, it slides along one of the converging surfaces of the notch 17 until it contacts both of the converging surfaces of the notch 17 in a centered manner. According to the embodiment shown in FIG. 4B, the first side face 14 acooperating with the notch 17 can be embodied so as to taper to the outside and in particular in such a way that one of the first side faces slides along one of the converging faces of the notch 17 when the lighting module 2 is inserted into the holding module 3 until both first side faces 14 acontact both of the converging faces of the notch 17 in a centered manner.FIG. 4C shows an embodiment in which the holding module 3 has two first reference elements 15 awhich cooperate with first side surfaces 14 aof the base body 4 in order to center the first side surfaces 14 arelative to the first reference elements 15 awhen the lighting module 2 is inserted into the holding module 3.FIGS. 5A and 5B show an isometric view of the lighting device 1 and a detailed view of the lighting device 1 and of one of the first fastening elements 11 a, respectively. FIG. 5A shows, in particular schematically, the forces F 11a on the contact regions 10 of the base body 4 of the lighting module caused by the first fastening elements 11 a, and the embodiment of the first fastening elements 11 ais shown in more detail in the detailed view in FIG. 5B. In particular, the detailed view in FIG. 5B shows the configuration of the first fastening elements 11 ain the form of a snap hook which, when the lighting module 2 is arranged in the holding module 3, deforms elastically and thereby exerts a force in the direction perpendicular to the reference surface 8 on a contact region 10 on an upper side 9 of the base body 4 of the lighting module 2 opposite the lower side 6. The base body 4 has on the upper side 9 corresponding elongate notches 10, which are designed to interact with the first fastening elements 11 aof the holding module 3 in a form-fitting manner under the exertion of a force in the direction perpendicular to the bearing surfaces 7.FIG. 6 shows a top view of the lighting device 1, as well as three detail views of the lighting device 1, in particular detail views of the first reference element 15 a, the second reference element 15 band the movable second fastening element 11 b. FIG. 6 also schematically illustrates the force F 11b which acts perpendicularly on the third side face 14 cthrough the second fastening element 11 b. The detailed view on the left in FIG. 6 shows how the second fastening element 11 bcooperates with the first recess 16 aor engages in the first recess 16. As a result, on the one hand, a force in the direction of the z-axis is applied to the base body and thus a movement in the direction opposite to the z-axis is restricted, but also a movement of the base body in the x-direction is restricted. The first reference element 15 aand the second reference element 15 balso prevent a movement direction in the direction opposite to the X axis and in the direction of the z axis. The second fastening element 11 bcauses accordingly a clamping of the base body between the reference elements 15 aand 15 b.The resulting forces and counterforces / contact forces are also shown once again in FIGS. 7A and 7B in an isometric view and a plan view of the lighting device 1. FIG. 7A shows the contact forces F 8 and the opposing forces F 11a applied by the first fastening means 11 a, which restrict a movement of the lighting module 2 relative to the holding module 3 in the direction of the x-axis. In addition, the illustrated forces and opposing forces limit rotation about the z-axis and about the x-axis.FIG. 7B shows the opposing forces F 15a, F 15b acting through the reference elements and the opposing forces F 11b applied through the second fastening means 11 b,which restrict a movement of the lighting module 2 relative to the holding module 3 in the direction of the x-axis and the z-axis. In addition, the illustrated forces and opposing forces limit rotation about the y-axis.LIST OF REFERENCE CHARACTERS1 Lighting device 2 Lighting module 3 Holding module 4 Base body 5 Semiconductor light source 6 Underside 7 Bearing surface 8 Reference surface 9 Upper side 10 Contact region 11 a, 11 b Befestigungs element 12 Connecting line 13 Virtual surface 14 a, 14 b, 14 c Seitenfläche surface 15 a, 15 bReference element 16 a, 16 b Aussparung 17 Notch 18 Rail x, y, z Direction xy, xz, yzLevel F 8 Force F 11a, F 11b Force F 15a, F 15b Force

Claims

Lighting module (2) comprising: a base body (4); and at least one semiconductor light source (5) which is arranged on the base body (4); wherein the base body (4) has, on an underside (6) of the base body (4), three mutually parallel bearing surfaces (7) which protrude from the underside (6) and are designed to be arranged on at least one reference surface (8) of a holding module (3); wherein the base body (4) has at least one contact region (10) on an upper side (9) of the base body (4) opposite the lower side (6), said contact region being configured to cooperate with at least one first fastening element (11a) of the holding module (3) under the exertion of a force in the direction perpendicular to the contact surfaces (7), wherein a projection of the at least one contact region (10) or of a connecting line (12) between two contact regions (10) perpendicular to the contact surfaces (7) lies within a virtual surface (13) spanned by the three contact surfaces (7) or intersects said virtual surface; wherein the base body (4) has at least one first side face (14a), a second side face (14b) and a third side face (14c), which respectively connect the underside (6) of the base body (4) to the upper side (9) of the base body (4), wherein the at least one first side face (14a) is configured to cooperate with at least one first reference element (15a) of the holding module (3) such that at least one first direction of movement (x) of the lighting module (2) is restricted within a plane (xz) parallel to the support faces (7); and wherein the second side face (14b) is configured to cooperate with at least one second reference element (15b) of the holding module (3) such that at least one second direction of movement (z) of the lighting module (2) perpendicular to the first direction of movement (z) is restricted within the plane (xz) parallel to the bearing faces (7); and wherein the third side face (14c) has a first cutout (16a) configured to cooperate in contact with a movable second fastening element (11b) of the holding module (3) such that in each case a direction of movement of the lighting module opposite the first and the second direction of movement (x, z) is restricted within the plane (xz) parallel to the bearing faces (7).Lighting module according to claim 1, wherein the at least one first side surface (14a) is configured to cooperate with the at least one first reference element (15a) of the support module (3) such that the at least one first side surface (14a) is centred relative to the at least one first reference element (15a).Lighting module according to claim 2, wherein the at least one first side surface (14a) is formed by a bulge from the base body (4).Lighting module according to claim 2, wherein the at least one first side surface (14a) is formed by a second recess (16b) in the base body (4).Lighting module according to one of Claims 1 to 4, wherein the base body (4) is formed by a material which conducts heat well and in particular forms a heat sink.Lighting module according to one of Claims 1 to 5, wherein the at least one semiconductor light source (5) is arranged on a projection of a connecting line (12) between two contact regions (10) perpendicular to the bearing surfaces (7).Lighting module according to one of Claims 1 to 6, wherein the at least one contact region (10) is formed by a notch or further cutout on the upper side (9) of the base body (4).Lighting module according to one of claims 1 to 7, further comprising a fastening means for a reflector module, in particular further recesses in the base body (4) for fixing a reflector module.Lighting module according to one of claims 1 to 8, further comprising a plug element arranged on the base body (4) and electrically coupled to the at least one semiconductor light source (5), wherein the plug element is configured to cooperate with a plug configured to provide a signal and / or a supply current for the at least one semiconductor light source (5).The lighting module according to any one of claims 1 to 9, further comprising a driver circuit and / or a PCB arranged on the base body (4) and electrically coupled to the at least one semiconductor light source (5).Holding module (3) comprising: at least one reference surface (8) which is designed to cooperate with three mutually parallel bearing surfaces (7) protruding from an underside (6) of a base body (4) of a lighting module (2); at least one first fastening element (11a) which is designed to exert a force in the direction perpendicular to the at least one reference surface (8) on a contact region (10) on an upper side (9) of the base body (4) of the lighting module (2) opposite the underside (6), wherein a projection of the contact region (10) with the at least one first fastening element (11a) or a connecting line (12) between two contact regions (10) with two first fastening elements (11a) perpendicular to the reference surface (8) lies within or intersects a virtual surface (13) spanned by the three bearing surfaces (7) of the lighting module (2); at least one first reference element (15a) configured to cooperate with at least one first side surface (14a) of the base body (4) of the lighting module (2) connecting the bottom side (6) of the base body (4) to the top side (9) of the base body (4) such that at least one first direction of movement (x) of the lighting module (2) is restricted within a plane (xz) parallel to the reference surface (8); at least one second reference element (15b) configured to cooperate with a second side surface (14b) of the base body (4) of the lighting module (2) connecting the bottom side (6) of the base body (4) to the top side (9) of the base body (4) such that at least one second direction of movement (z) of the lighting module (2) perpendicular to the first is restricted within the plane (xz) parallel to the reference surface (8); and a movable second fastening element (11b) which is configured to cooperate with a first cutout (16a) in a third side face (14c) of the base body (4) of the lighting module (2) which connects the underside (6) of the base body (4) to the upper side (9) of the base body (4) in such a way that in each case a direction of movement of the lighting module (2) opposite the first and the second direction of movement (x, z) is restricted within the plane (xz) parallel to the reference face (8).The holding module according to claim 11, wherein the at least one first reference element (15a), the second reference element (15b) and the second fastening element (11b) are arranged and configured to restrict a rotation of the lighting module (2) within the plane (xz) parallel to the reference surface (8).The holding module according to claim 11 or 12, wherein the at least one reference surface (8) and the at least one first fastening element (11a) are arranged and configured to restrict a rotation of the lighting module (2) about an axis which lies within the plane (xz) parallel to the reference surface (8).Holding module according to one of Claims 11 to 13, wherein the at least one first fastening element (11a) is designed to be movable, in particular to be elastically movable.Holding module according to one of Claims 11 to 14, wherein at least two first fastening elements (11a) are designed to exert a force in the direction perpendicular to the at least one reference surface (8) on in each case one contact region (10) on the upper side (9) of the base body (4) of the lighting module (2).Holding module according to one of Claims 11 to 15, wherein the second fastening element (11b) has a lever which is designed to release the interaction between the second fastening element (11b) and the first cutout (16a) in the third side face (14c) of the base body (4) of the lighting module (2) in a repeatable manner.Holding module according to one of Claims 11 to 16, wherein the at least one first reference element (15a) is designed to cooperate with the at least one first side face (14a) of the base body (4) of the lighting module (2) in such a way that the at least one first side face (14a) is centred with respect to the at least one first reference element (15a).Holding module according to one of Claims 11 to 17, wherein the at least one first reference element (15a) is formed by a pin.Holding module according to one of Claims 11 to 18, comprising two first reference elements (15a), which are in particular each formed by a pin, wherein the two first reference elements (15a) are designed to cooperate with the at least one first side face (14a) of the base body (4) of the lighting module (2) in such a way that at least one first direction of movement (x) of the lighting module (2) is restricted within the plane (xz) parallel to the reference face (8) and that the at least one first side face (14a) is centred with respect to the two first reference elements (15a).Holding module according to one of Claims 11 to 19, wherein the at least one first reference element (15a) comprises a notch (17) which is designed to cooperate with the at least one first side face (14a) of the base body (4) of the lighting module (2) in such a way that at least one first direction of movement (x) of the lighting module (2) is restricted within the plane (xz) parallel to the reference face (8) and that the at least one first side face (14a) is centred with respect to the at least one first reference element (15a).Holding module according to one of Claims 11 to 20, wherein the at least one reference surface (8) and the at least one first fastening element (11a) form a rail (18) which is designed to insert the lighting module (2) into the rail (18).Holding module according to one of Claims 11 to 21, wherein the second reference element (15b) is formed by a bulge or a pin.Lighting device (1), in particular for a motor vehicle, comprising a lighting module (2) according to one of Claims 1 to 10 and a holding module (3) according to one of Claims 11 to 22, wherein the lighting module (1) and the holding module (3) are connected to one another in a repeatably detachable manner.

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