Illumination device for a motor vehicle headlight

Abstract

Illumination device (3) for a motor vehicle headlight, comprising a panel (4) comprising a plastic material, a lighting module (5) comprising at least one heat sink (6) comprising a metal material and mounted so as to be movable relative to the panel (4) via the heat sink (6), the device further comprising a connection interface (9) arranged to connect the heat sink (6) and the panel (4), and comprising at least one outer peripheral layer configured to be in contact with the panel (4) and comprising a plastic material.

Description

[0001] DESCRIPTION

[0002] TITLE: Lighting device for motor vehicle headlight.

[0003] The invention relates to a lighting device for a motor vehicle headlight and to a headlight comprising said device. The invention also relates to a vehicle equipped with a headlight according to the invention.

[0004] Motor vehicles are conventionally equipped with headlamps, particularly front, or headlights, intended to illuminate the road in front of the vehicle at night or in reduced light. These headlamps can be used in different lighting modes, for example a "high beam" mode, allowing the road to be brightly illuminated far in front of the vehicle, and a "low beam" mode, providing more limited illumination of the road but offering good visibility without dazzling other road users. In this sense, the headlamps may comprise one or more separate light modules, mounted movably on a support, called a plate. The light modules are in particular pivotally mounted on the plate in order to allow their inclination to be adjusted and ensure that the road is adequately lit, without causing inconvenience to other drivers.

[0005] In particular, the plate may be connected to one of the light modules by means of a connecting means included therein. The connecting means may, for example, be a pivot comprising a metallic material. For example, such a connecting means may be included in the heat sink, also referred to as a radiator, or carried by the latter. Since the plates are usually made of plastic materials, friction is observed at the pivoting connection made between the light module and the plate when adjusting the position of the light module in particular. Such friction causes accelerated wear of the parts and non-optimized adjustment of the light module in question.Such a phenomenon is particularly observed in situations of dynamic movement, or dynamic leveling, also called "dynamic leveling" in English, corresponding to automatic adjustments of the level of the light module during use of the vehicle, for example in driving conditions, in order to ensure the comfort of surrounding drivers and prevent their dazzling.

[0006] The present invention falls within this context and aims to propose a lighting assembly allowing adjustment of at least one lighting module, in particular of the position of such a module, under optimized conditions and in a simple and low-cost manner.

[0007] The invention relates to a lighting device for a motor vehicle comprising:

[0008] - a plate comprising a plastic material;

[0009] - a light module comprising at least one heat sink comprising a metallic material, the light module being mounted to move relative to said plate.

[0010] The lighting device further comprises at least one connecting interface connecting the heat sink to the plate, the connecting interface comprising at least one external peripheral layer comprising a plastic material configured to be in contact with the plate and having a thickness greater than or equal to 2 mm.

[0011] In particular, the plastic material of said peripheral layer is a polyoxymethylene.

[0012] The connecting interface may comprise a cylindrical outer structure. In particular, the cylindrical outer structure may comprise a circular base with a diameter greater than or equal to 6 mm.

[0013] The connecting interface may comprise a pair of connecting means, carried by the heat sink, and at least one connecting element, the light module being mounted to move relative to the plate via the pair of connecting means and the at least one connecting element comprising a hollow body arranged on at least one of the connecting means so as to extend between the heat sink and the plate, the body comprising the external peripheral layer.

[0014] The bonding interface may comprise a pair of bonding members, each bonding member comprising a hollow body disposed on one of the bonding means so as to extend between the heat sink and the plate, each body comprising an outer peripheral layer.

[0015] According to an exemplary embodiment, the heat sink and the pair of connecting means may form a single-piece assembly. The connecting means are therefore formed by the heat sink. In particular, each connecting means may have the shape of a pin or a finger extending projecting from a side wall of the heat sink.

[0016] The body of each connecting element may comprise a cylindrical outer structure. In particular, the cylindrical outer structure comprises a circular base, preferably with a diameter greater than or equal to 6 mm.

[0017] Each connecting element may be configured to completely surround an outer face of the connecting means on which it is arranged.

[0018] Each connecting element may include a base configured to support the body and to extend into abutment against the heat sink.

[0019] The base can be configured to be interposed between the board and the heat sink. Also:

[0020] - the connecting means may comprise a means for retaining the connecting element and / or the connecting element may comprise an element for blocking a movement of the connecting element relative to one of the connecting means; and / or

[0021] - the connecting element may be overmolded onto one of the connecting means or the connecting element may be fixed onto one of the connecting means.

[0022] In particular, each connecting means may comprise a means for retaining the connecting element arranged on this connecting means and / or each connecting element may comprise an element for blocking a movement of the connecting element relative to the connecting means on which it is arranged; and / or

[0023] - each connecting element can be overmolded onto the connecting means on which it is arranged or each connecting element can be fixed onto the connecting means on which it is arranged.

[0024] The plate may include a pair of holes, each hole being configured to receive a portion of the connecting interface. In particular, each hole is configured to receive the body of a connecting element.

[0025] Each orifice may be through-hole so as to receive a portion of the connecting interface. In particular, each orifice is crossed by the body of a connecting element.

[0026] In particular, the light module can be mounted so as to be able to rotate relative to the plate around an axis of rotation, the connection interface being positioned on such an axis.

[0027] In particular, the light module can be mounted to rotate about an axis of rotation relative to the plate by means of the pair of connecting means, the pair of connecting means defining the axis of rotation. Optionally, the lighting device can be configured to cooperate with at least one adjustment means so as to implement a dynamic attitude correction.

[0028] The invention also relates to a motor vehicle comprising a lighting device according to the invention.

[0029] Other details, characteristics and advantages will emerge more clearly on reading the detailed description given below, for informational and non-limiting purposes, in relation to the various examples of embodiment illustrated in the following figures:

[0030] Figure 1 is a schematic view of an exemplary embodiment of a vehicle comprising a headlight comprising a lighting device.

[0031] Figure 2 is a perspective representation of an exemplary embodiment of the lighting device according to the invention comprising a light module and a plate.

[0032] Figure 3 is a perspective representation of the light module.

[0033] Figure 4 is a partial representation of the lighting device illustrating the cooperation between the board and the light module.

[0034] Figure 5 is a partial cross-sectional representation of the lighting device illustrating the cooperation between the board and the light module.

[0035] Figure 6 is a partial cross-sectional representation of the lighting device illustrating the cooperation between the board and the light module.

[0036] Figure 7 is a cross-sectional representation of the cooperation between the board and the light module.

[0037] Figure 1 schematically illustrates a motor vehicle 1 equipped with a headlight 2, which comprises at least one lighting device 3. Figures 2 to 7 represent an exemplary embodiment of such a lighting device 3. In this case and in a non-limiting manner, the headlight 2 considered is a front headlight 2. By convention in the description below, the direction in which a motor vehicle 1 moves in a straight line is defined as being the longitudinal direction X. The forward direction corresponds to the direction in which the motor vehicle 1 usually moves along the longitudinal direction and is opposite to the rear direction. The direction perpendicular to the longitudinal direction and located in a plane parallel to the ground is called the transverse direction Y. The direction perpendicular to the directions X and Y, in other words orthogonal to the ground on which the vehicle 1 rests, is called the vertical direction Z.The term “top” determines an orientation towards the roof and / or the hood of the vehicle 1, while the term “bottom” determines an orientation towards a lower body of the vehicle 1. Thus, a direct XYZ reference frame is defined, represented in the figures requiring it.

[0038] In general, the projector 2 comprises at least one lighting device 3. The lighting device 3 comprises a plate 4 comprising a plastic material, for example in a plastic material filled with glass fibers such as PBT, for Polybutylene terephthalate, on which at least one light module 5 is mounted movably relative to said plate 4 by means of a connecting interface 9. In particular, the plate may comprise a structure comprising one or more materials in which at least one contact zone between the plate 4 and the connecting interface 9 comprises a plastic material. The connecting interface 9 thus connects the light module 5 to the plate 4. According to an exemplary embodiment not shown, the lighting device 3 may comprise a plurality of separate light modules 5 and / or a plurality of plates 4.

[0039] The following description is given with reference to a single light module 5 mounted movably relative to a single plate 4. It is nevertheless understood that the whole of said description may extend mutatis mutandis to a lighting device 3 comprising a plurality of light modules 5 and / or plates 4. By way of non-limiting example, the light module 5 may consist of a module emitting one or more light beam(s). For example, the light module 5 may be used in different modes, such as a “high beam” mode and / or a “low beam” mode, also referred to as a “low beam”. The “high beam” mode makes it possible to strongly illuminate the road far in front of the vehicle 1. The “low beam” mode provides more limited illumination of the road but nevertheless offers good visibility without dazzling other road users.

[0040] The light module 5 comprises at least one heat sink 6, also referred to as a radiator, comprising a metallic material. In particular, at least one contact area of ​​the module with the connection interface 9 comprises a metallic material. For example, the heat sink 6 may be made of aluminum. The heat sink 6 is particularly configured to allow the dissipation of the heat emitted by one or more light sources equipping the light module 5. Alternatively, the light module 5 may comprise a plurality of heat sinks 6.

[0041] According to an exemplary embodiment, the heat sink 6 comprises a plurality of walls 61 delimiting an external structure of the light module 5 comparable to a housing of the light module 5. The heat sink 6 comprises in particular two side walls 61a, opposite one another, as well as an upper wall 61b and a lower wall 61c, connecting the side walls 61a together. The heat sink 6 has in particular a housing shape open on at least one side, in particular a side configured to allow the passage of at least one light beam from the light module 5. The walls 61 of the heat sink 6 delimit an internal volume in which different components of the light module 5 are arranged, such as in particular at least one light source, not shown, for example a light source of the semiconductor type, in particular of the light-emitting diode type.Additionally, the heat sink 6 may comprise at least one planar portion forming a support for one or more internal components of the light module 5, for example of the at least one light source.

[0042] The light module 5 further comprises an optical projection unit 7. Generally, the optical unit 7 comprises at least one lens configured to project the at least one light beam towards a roadway on which the vehicle 1 is traveling. The light unit is configured to be attached and mounted, in particular in a removable manner, at a front part of the light module 5. For example, the optical unit 7 is mounted on the heat sink 6.

[0043] The various figures 2 to 7 illustrate an exemplary embodiment of the cooperation between the light module 5 and the plate 4 of the lighting device 3. The connecting interface 9 connects the heat sink 6 to the plate 4. Generally, in order to prevent friction between the plate 4, comprising a plastic material, and the heat sink 6, comprising a metallic material, the connecting interface 9 is configured so as to extend between the light module 5, particularly the heat sink 6, and the plate 4 along at least one direction. Also, the connecting interface 9 comprises at least one external peripheral layer comprising a plastic material configured to be in contact with the plate 4. Such a layer has a thickness greater than or equal to 2 mm so as to have a resistance adapted to the movement of the light module 5 relative to the plate 4.In particular, the peripheral layer of the connecting element 8 may comprise a plastic material of the Polyoxymethylene type, also known as POM.

[0044] The light module 5 is in particular mounted to be movable in rotation about an axis of rotation 500 relative to the plate 4 via the connecting interface 9. In particular, the axis of rotation 500 is parallel, or substantially parallel, to the transverse direction Y and / or to a horizontal direction within the vehicle. In order to cooperate with the light module 5, the plate 4 comprises a pair of orifices 41, each orifice 41 being configured to receive a portion of the connecting interface 9. According to the illustrated embodiment, the plate 4 comprises at least one frame 42 configured to at least partially surround the light module 5. The frame 42 comprises a plurality of flanks 43 in the shape of a closed or open frame 42. In particular, the frame 42 comprises two opposite lateral flanks 43a each configured to extend opposite one of the lateral walls 61a of the heat sink 6.Said lateral flanks 43a each comprise one of the orifices 41. Each orifice 41 is through so as to be able to receive a part of the connection interface 9.

[0045] Advantageously, the plate 4 may optionally comprise at least one elastically deformable tab 44. This extends into the orifice 41 and is configured to cooperate with a portion of the connecting interface 9, preferably with the outer peripheral layer thereof. For example, as visible in FIG. 4, the tab 44 has a free end portion at least partly complementary to a portion of the connecting interface 9 in order to maintain the latter. For example, the tab 44 maintains a portion of the connecting interface 9 in support of at least one edge of the orifice 41. In this sense, the tab 44 may come from a thickness of the lateral flank 43a of the plate. Such a principle may extend to each of the orifices 41 of the pair. Such a tab 44 allows simplified assembly of the connection interface 9 on the plate 4. It is nevertheless understood that the plate 4 may be devoid of such a tab 44.The plate 44 can then comprise a simple orifice 41 as previously explained, at least one edge of which is configured so as to be at least partly complementary in shape to the connecting interface 9. Alternatively, the plate 4, and more particularly the orifice 41, can be equipped with any type of part complementary in shape to at least a part of the connecting interface 9 so as to hold the latter in the orifice 41 while allowing its displacement by rotation. The figures illustrate a particular example of embodiment in which the connecting interface 9 comprises two types of distinct parts: on the one hand a pair of connecting means 62, carried by the heat sink 6, and on the other hand at least one connecting element 8.In such an exemplary embodiment, the light module 5 is mounted to move relative to the plate 4 by means of the pair of connecting means 62 and the at least one connecting element 8 is arranged on at least one of the connecting means 62, in particular so as to surround it at least partially. The at least one connecting element 8 comprises the outer peripheral layer. It is understood that the entire description below can be applied mutatis mutandis to a connecting interface 9 in which the at least one connecting element 8 and one of the connecting means 62 form a single part. Examples of connecting means 62 will be detailed in more detail later. It is nevertheless understood that any characteristic relating to one of the connecting means 62 can extend to the other of the connecting means 62 of the pair.

[0046] The light module 5 is in particular mounted to be mobile in rotation around an axis of rotation 500 relative to the plate 4 by means of a pair of connecting means 62 included in the light module 5. In particular, the pair of connecting means 62 defines the axis of rotation 500. In particular, the pair of connecting means 62 is carried by the heat sink 6. In particular, each connecting means 62 is carried by one of the side walls 61 a of the heat sink 6. Said connecting means 62 are thus arranged on a defined axis, in particular on the axis of rotation 500. In particular, they are centered on such an axis.

[0047] Generally, the connecting means 62 has the shape of a pin or a finger extending in projection from the side wall 61a of the heat sink 6 carrying it. In particular, the connecting means 62 extends in projection from such a wall along the transverse direction Y. In order to ensure good strength of the connecting means 62, these are preferably made of a metallic material, such as aluminum. At least a portion of the connecting interface 9 can thus form a single-piece assembly with the heat sink 6. Optionally but preferably, at least one of the connecting means 62 and the heat sink 6 form a single-piece assembly. In particular, the pair of connecting means 62 and the heat sink 6 form a single-piece assembly.

[0048] According to an alternative not shown, the connection interface 9 can be attached and fixed to the heat sink 6. In particular, the connection means 62 can be attached and fixed to the heat sink 6. It is understood that the entirety of the present description applies mutatis mutandis to such an alternative.

[0049] As explained previously, the at least one connecting element 8 is arranged on one of the connecting means 62. The connecting means 62 considered and the at least one connecting element 8 thus extend between the heat sink 6 and the plate 4 along at least one direction. In particular, the connecting element 8 can be interposed between the heat sink 6 and the plate 4 along a plurality of directions, such as the longitudinal and transverse directions.

[0050] According to an exemplary embodiment, the connecting element 8 comprises a hollow body 81 comprising the external plastic peripheral layer. The contact between plastic materials, of the plate 4 on the one hand and of the connecting element 8 on the other hand, advantageously allows the reduction of the friction generated and, consequently, prevents premature wear of the parts.

[0051] The description of the connecting element 8 is here made with reference to a single connecting element 8, nevertheless, according to the present invention, the connecting interface 9 can comprise a plurality of connecting elements 8, in particular as many connecting elements as connecting means 62, each of the connecting elements 8 being mounted on one of the connecting means 62 of the light module 5. It is therefore understood that any description made with reference to a connecting element 8 can extend to a plurality of connecting elements.

[0052] The connecting element 8 is configured to at least partially surround the connecting means 62 with which it cooperates. Preferably, the connecting element 8 is configured to completely surround an outer face 621 of the connecting means 62. The connecting element 8, and more particularly the body 81 of the connecting element 8, has a hollow structure at least partly complementary in shape to the connecting means 62. The connecting element 8 is thus configured to receive all or part of the connecting means 62. An inner surface 801 of the connecting element 8, facing the connecting means 62, is in particular configured to be in at least partial contact with the outer surface 621 of the connecting means.

[0053] The connecting element 8 can thus be mounted so as to be centered on the connecting means 62. By extension, as explained previously, the connecting element 8, or even the connecting elements, can be centered on the axis of rotation 500 of the light module 5.

[0054] The connecting interface 9 preferably comprises a cylindrical external structure, in particular defined by a circular base. In this case, in a non-limiting manner, the body 81 comprises such a cylindrical external structure. A circular base aims in particular to allow the module to be moved, for example by rotation, relative to the plate 4. The external structure of the body is here defined by an external surface 802 of the connecting element 8, opposite the internal surface 801. The external surface 802 is included in the peripheral layer. The external surface 802 is thus configured to be in contact with the plate 4 when the light module 5 is moved.

[0055] The cylindrical external structure, here formed by the body 81, is notably dimensioned so that its circular base has a diameter greater than or equal to 6 mm. Such a diameter is here defined relative to the external surface 802, defining the external structure of the body 81. Such dimensioning aims to guarantee the correct maintenance of the light module 5 relative to the plate 4 on the one hand and the good resistance of the connection interface 9 on the other hand.

[0056] According to an exemplary embodiment not shown, the body 81 of the connecting element 8 may have a plurality of layers. As explained previously, the outer peripheral layer of the connecting element 8 comprises a plastic material, for example of the Polyoxmethylene type. The connecting element 8, particularly the body 81, may comprise at least one inner layer, comprising the inner surface 801, configured to be at least partly in contact with the connecting means 62. The inner layer may comprise a plastic or metallic material. The plastic peripheral layer may then be overmolded onto such an inner layer.

[0057] Optionally, the connecting element 8 may comprise one or more intermediate layers, interposed between the internal layer and the external peripheral layer, and / or one or more inserts. The presence of a plurality of layers, for example in distinct materials, and / or inserts may serve to reinforce the structure of the connecting element 8.

[0058] Alternatively, as illustrated, the body 81 may be made entirely of a single plastic material. The body 81 then comprises a single layer and the peripheral layer comprises the external face and the internal face of the body 81.

[0059] Optionally, the connecting element 8 may further comprise a base 82. The base 82 is configured to carry the body 81 and to extend in support of the heat sink 6. The base 82 may in particular be at least partly flat. Alternatively, the base 82 may have a profile complementary to a profile of the wall carrying the connecting means 62 so as to extend in contact with the latter. The base 82 is in particular configured to be interposed between the plate 4 and the heat sink 6 along at least one direction, in particular along the transverse direction Y so as to prevent their contact. It thus makes it possible to maintain the heat sink 6 and the plate 4 at a non-zero distance from each other along this same direction, at least at the level of the connecting means 62 considered.

[0060] The base 82 may be continuous, so that it forms a ring surrounding the body 81 over the entire perimeter of the body 81 defined by the outer surface 802. Alternatively, the base 82 may be discontinuous. It may then have the shape of a plurality of tabs distributed along this same perimeter, for example at regular intervals.

[0061] The base 82 may extend in the continuity of at least one of the layers of the body 81 as previously explained so that the base 82 and at least one part of the body 81 form a single-piece assembly. Also, according to a particular embodiment, the connecting element 8 may be entirely made of a plastic material, for example polyoxymethylene.

[0062] Preferably, the base 82 has a thickness, here defined along the transverse direction Y and / or along the axis of rotation 500 of the light module 5, greater than or equal to 1 mm, or even 1.5 mm.

[0063] According to various embodiments, the body 81 may have an open or closed free end. The free end of the body 81 corresponds in particular to the end of the body 81 opposite the base 82. The body 81 thus preferably has a length, defined along the transverse direction and / or along the axis of rotation 500, strictly greater than a length of the connecting means 62, defined along this same axis. Preferably, in order to limit the bulk generated, the length of the connecting element 8 is defined so that the free end of the body 81 extends into the orifice 41 or so that said free end and an external surface 401 of the plate are at least partly flush.Alternatively, the length of the body 81 may be such that the protrusion observed relative to the external surface 401 of the plate is strictly less than 2 mm along a direction of extension of the connecting element 8, here along the transverse direction Y, so as not to generate problematic bulk. For example, such an protrusion may be of the order of 1 mm or 0.5 mm.

[0064] The connecting interface 9 thus acts as an intermediary between the heat sink 6 and the plate 4. In particular, in the illustrated embodiment, the connecting element 8 acts as an intermediary between the connecting means 62 and the plate 4. In this sense, when the light module 5 is moved, the connecting element 8 is secured to the light module 5, particularly to the connecting means 62 on which it is mounted, and is moved concomitantly with said connecting means 62 relative to the plate 4.

[0065] In order to prevent the movement of the connecting element 8 relative to the connecting means 62, the connecting element 8 may in particular be overmolded onto the connecting means 62. Such a principle may in particular be implemented when the connecting element 8 comprises one or more layers of plastic material. Alternatively, the connecting element 8 may be attached and mounted on the connecting means 62. It may then be fixed to the connecting means 62 by means of any fixing means, such as glue or an adhesive. According to yet another alternative, the connecting element 8 may be assembled onto the connecting means 62 by deformation. The inner surface 801 of the connecting element 8 may in particular comprise ribs, for example forming a circular or at least partially circular shape.Such a shape has a dimension, in particular a diameter, strictly less than a dimension, or diameter, of the connecting means 62 defined at the level of the external face 621 so that, when the connecting means 62 is introduced into the connecting element 8, the ribs are crushed. Thus, by deformation, the connecting element 8 and the connecting means 62 are assembled and held relative to each other. It is understood that other fixing alternatives, such as screwing, may be envisaged. As illustrated in FIG. 7, alternatively or additionally, when the connecting element 8 is attached and mounted on the connecting means 62, the connecting means 62 may comprise a retaining means 63 of the connecting element 8 and / or the connecting element 8 may comprise an element 83 for blocking a movement of the connecting element 8 relative to one of the connecting means 62.The retaining means 63 may, for example, have the shape of a cutout, here in particular so as to form a flat, configured to cooperate with the connecting element 8 so as to prevent the latter from moving relative to the connecting means 62. Alternatively, the retaining means 63 may have the shape of a graining, one or more rib(s) or any type of member extending in projection from the outer face 621. Similarly, the connecting element 8 may comprise a blocking element 83 having the shape of a graining, one or more rib(s), as illustrated, or any type of member extending in projection from the inner surface 801. In this case, the blocking element 83 and the retaining means 63 aim to prevent the pivoting of the connecting element 8 relative to the connecting means 6. It is nevertheless understood that the shape and / or dimensions of the retaining means 63 and of the blocking element 83 illustrated are in no way limiting.

[0066] The lighting device 3 according to the invention is thus advantageously adapted to prevent wear of the parts when these are configured to implement the movement of the light module 5 relative to the plate 4, in particular the movement in rotation or even in translation, for example in the context of a correction of the attitude of the light module 5.

[0067] According to a particular embodiment, the lighting device 3 can be configured to implement a dynamic, or automatic, attitude correction, also referred to in English as “dynamic leveling”. The lighting device 3 can then maintain an attitude adapted to the traffic conditions in all circumstances. According to a non-limiting example, the dynamic attitude correction can aim to maintain a horizontal attitude so that the light module 5 remains permanently parallel to the road.The position of the light module 5 can then be adapted so that the light beams emitted by it do not blind the surrounding drivers in various driving conditions, in particular when the “low beam” function is activated, and / or during a change of operating mode of the lighting device 3, between the “low beam” mode and the “high beam” mode or vice versa and / or when the load of the vehicle 1 varies and / or when the vehicle 1 brakes. The lighting device 3 or the headlight 2 can then comprise a means for adjusting the position of the light module 5, in particular its position, configured to move the latter as required. Alternatively, such an adjustment means can be configured to cooperate with the lighting device 3 or the headlight 2 according to the invention. The adjustment means comprises at least one actuator, such as a motor and / or a jack.The lighting device 3 or the projector 2 may also be configured to receive data and / or instructions for attitude modifications emitted by a load detector and / or braking sensor, not shown. The lighting device 3 is then all the more advantageous as the light module 5 is caused to be moved relative to the plate 4 in a more regular and repeated manner. For example, the lighting device 3 according to the invention is advantageously adapted to support a repetition of adjustment of the attitude during the life cycle of the lighting device 3. A similar principle applies mutatis mutandis to a lighting device 3 capable of implementing a simple adjustment of the attitude of the light module 5.

[0068] Thus, the present invention proposes a lighting device comprising a light module, a plate and a connecting element adapted to allow, at low cost and without generating unsuitable bulk, cooperation and movement of the light module relative to the plate under optimized conditions making it possible to extend the service life of the different parts by reducing the friction existing between them at their cooperation zones and thus preventing their premature wear. The lighting device according to the invention is thus particularly advantageous in the context of the development of vehicles incorporating a level correction.

[0069] The present invention cannot, however, be limited to the means and configurations described and illustrated here and it also extends to any equivalent means or configuration and to any technically operative combination of such means insofar as they ultimately fulfill the functionalities described and illustrated in the present document.

Claims

CLAIMS:

1. Lighting device (3) for a motor vehicle (1) comprising: - a plate (4) comprising a plastic material; - a light module (5) comprising at least one heat sink (6) comprising a metallic material, the light module (5) being mounted to move relative to said plate (4); characterized in that the lighting device (3) further comprises at least one connecting interface (9) connecting the heat sink (6) to the plate (4), and in that the connecting interface (9) comprises at least one external peripheral layer comprising a plastic material configured to be in contact with the plate (4) and having a thickness greater than or equal to 2 mm.

2. Lighting device (3) according to the preceding claim, in which the connecting interface (9) comprises a pair of connecting means (62), carried by the heat sink (6), and at least one connecting element (8), the light module being mounted movably relative to the plate (4) by means of the pair of connecting means (62) and the at least one connecting element (8) comprising a hollow body (81) arranged on at least one of the connecting means (62) so as to extend between the heat sink (6) and the plate (4), the body (81) comprising the external peripheral layer.

3. Lighting device (3) according to the preceding claim, wherein the connecting interface (9) comprises a pair of connecting elements (8), each connecting element (8) comprising a hollow body (81) arranged on one of the connecting means (62) so as to extend between the heat sink (6) and the plate (4), each body (81) comprising an external peripheral layer. Lighting device (3) according to claim 2 or 3, wherein the heat sink (6) and the pair of connecting means (62) form a single-piece assembly. Lighting device (3) according to one of claims 2 to 4, wherein the body (81) of each connecting element (8) comprises a cylindrical outer structure. Lighting device (3) according to the preceding claim, wherein the cylindrical outer structure comprises a circular base, preferably with a diameter greater than or equal to 6 mm. Lighting device (3) according to one of claims 2 to 6, wherein each connecting element (8) is configured to completely surround an outer face (621) of the connecting means (62) on which it is arranged. Lighting device (3) according to one of claims 2 to 7, in which each connecting element (8) comprises a base (82) configured to carry the body (81) and to extend in support of the heat sink (6).Lighting device (3) according to the preceding claim, in which the base (82) is configured to be interposed between the plate (4) and the heat sink (6). Lighting device (3) according to one of claims 2 or 9, in which:. - the connecting means (62) comprises a retaining means (63) for the connecting element (8) and / or the connecting element (8) comprises an element (83) for blocking a movement of the connecting element (8) relative to one of the connecting means (62); and / or - the connecting element (8) is overmolded onto one of the connecting means (62) or the connecting element (8) is fixed onto one of the connecting means (62). Lighting device (3) according to one of claims 1 to 10, wherein the plate (4) comprises a pair of orifices (41), each orifice (41) being configured to receive a portion of the connecting interface (9). Lighting device (3) according to the preceding claim, wherein each orifice (41) is through so as to receive a portion of the connecting interface (9). Lighting device (3) according to one of the preceding claims, wherein the light module (5) is mounted to be able to rotate relative to the plate (4) around an axis of rotation (500), the connecting interface (9) being positioned on such an axis.Lighting device (3) according to the preceding claim, taken in combination with claim 2, in which the light module (5) is mounted to move in rotation about an axis of rotation (500) relative to the plate (4) by means of the pair of connecting means (62), the pair of connecting means (62) defining the axis of rotation (500). Lighting device (3) according to one of the preceding claims, configured to cooperate with at least one adjustment means so as to implement a dynamic attitude correction.

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