A device for projecting light representations, mounted in a vehicle.

Abstract

The invention relates to a lighting device (100a) for a vehicle, comprising a light source (98) and an optical system (99) associated with the light source, configured to project a luminous representation onto a surface within the vehicle's environment. Specifically, the lighting device comprises a radiator (10) including a housing (101) with a flange (102) configured to receive the light source and the optical system, a support wall (11) adapted to be fixed to the vehicle and configured to receive the radiator, connecting means arranged between the flange and the support wall for tilting the radiator to allow modification of the flange's angle of inclination relative to the support, and adjustment means arranged between the support wall and the flange configured to modify the flange's angle of inclination relative to the support. (See Figure 3 for abbreviations.)

Description

Title of the invention: Light projection device embedded in a vehicle. technical field

[0001] The present invention relates to a vehicle lighting device, more particularly a device for projecting a luminous representation of a vehicle. Technological background

[0002] Lighting devices on motor vehicles now fulfill several functions, such as illuminating and / or defining a vehicle's light signature. Among these lighting devices, some are used to project luminous representations around the vehicle on which they are mounted.

[0003] Thus, there are devices installed in vehicles that allow the projection of a logo, personalized welcome messages, or designs, for example, associated with a vehicle door and projecting a logo onto the ground in front of that door when the vehicle is unlocked and / or when the door is opened. Such devices are, for example, installed in the door, in a rearview mirror associated with the door, or even in a rocker panel near the door.

[0004] There are also devices installed in vehicles enabling the extended signaling function for a direction indicator or a reversing light, such a device projecting a light pattern onto the ground, in the event of activation of this direction indicator or reversing light.

[0005] These light projection devices, hereinafter referred to as lighting devices, add a touch of personalization and style to the vehicle, while also providing a practical function for illuminating the ground around the vehicle in the dark. Such lighting devices are integrated, for example, into the exterior silhouette of a vehicle. These lighting devices generally comprise numerous components, including a light source, an electronic circuit board, optical elements capable of guiding light beams, and decorative elements such as a styling mask.

[0006] These lighting devices must meet several requirements, including robustness, compactness, lightness, aesthetics, cost-effectiveness, and maintainability. Furthermore, in order to achieve a satisfactory level of quality in the light projection, which is a function of the projected light's dimensions, such a device must be properly adjusted, particularly in relation to the projection surface that forms part of the vehicle's environment.

[0007] Additionally, lighting devices must be repairable to meet environmental requirements. It is therefore necessary to make the various components of such a lighting device accessible so that they can be analyzed, repaired, and / or replaced when defective, thus preserving as many of the functional components of the lighting device as possible. Furthermore, such a lighting device must be easily disassembled and fragile components easily accessible, while conversely, the functional fixing and / or assembly elements must be discreet for aesthetic reasons. Their design and integration into a vehicle is therefore complex, as it must meet all of these requirements, whether functional, aesthetic, and / or related to the maintenance of the lighting device. Summary of the present invention

[0008] The present invention overcomes the technological background problems described above by designing a lighting device that integrates into different vehicles without revealing the assembly means and allows adjustment of the lighting device while facilitating its maintenance.

[0009] In the case of an extended function as presented above, the present invention facilitates the integration of this function into an existing lighting assembly such as a lighthouse or a light, and the replacement of a device fulfilling this extended function.

[0010]

[0011] To this end, the invention relates firstly to a lighting device for a vehicle, comprising a light source and an optical system associated with the light source, the light source and the optical system being configured to project a luminous representation onto a surface of the vehicle's environment, the lighting device being characterized in that it comprises: - a radiator comprising a casing fitted with a collar, the casing being configured to receive the light source and the optical system, - a support wall suitable for fixing to the vehicle and configured to receive the radiator, - connecting means arranged between the collar and the support wall and configured to mount the radiator by tilting along a first axis relative to the support wall, so as to allow a modification of the angle of inclination of the collar relative to the support wall, - adjustment means arranged between the support wall and the collar and configured to modify the angle of inclination of the collar relative to the support wall.

[0012] Such a lighting device allows the orientation of the light projection to be adjusted in relation to the support of the lighting device and thus the light projection to be adjusted to improve the quality of its rendering.

[0013] According to an advantageous embodiment, the support wall includes an opening configured to allow the passage of the shell so as to position the collar juxtaposed with the support wall. The connecting means comprise two bosses arranged on one of the faces opposite the support wall and the collar, and which make contact at two points on the other face opposite the support wall and the collar. The two points of contact between the support wall and the collar define the first axis around which the collar pivots relative to the support wall. The pivot joint around the first axis is thus defined using simple and robust shapes without requiring the use of additional components or fragile shapes such as a cylindrical axis. The number of components in the lighting device is therefore reduced.

[0014] According to an advantageous embodiment, the two bosses are arranged on the support wall.

[0015] According to an advantageous embodiment, the lighting device includes fastening means configured to maintain the collar in contact with the support wall at the contact points. The lighting device is thus held assembled by means of fastening means adapted to the relative movement between these two components.

[0016] According to an advantageous embodiment, the fastening means comprise two screws configured to screw into two corresponding threaded holes defined on the support wall according to the two points of contact, the flange comprising two through holes also defined according to the two points of contact, the fastening means comprising two spacers dimensioned to be placed respectively in the through holes and to receive respectively the screws which abut against a bearing surface of these spacers so as to delimit the stopping position of the screws relative to the flange when they are screwed into the support wall, the flange comprising an external face provided with two second bosses arranged at the level of the through holes, the screws each comprising a head,The underside of the screw heads makes contact at two points on the second bosses when these screws are screwed into the support wall until they reach the stop. The pivot joint between these two components is thus controlled and has a degree of freedom defined by the spacers. Indeed, the spacers stop the screws during tightening before they exert excessive pressure on the flange, thus guaranteeing the flange's freedom of movement relative to the support.

[0017] According to an advantageous embodiment, the lighting device includes a sealing gasket configured to conform to a contour of the orifice and an external contour of the housing. The lighting device can thus be installed in humid and / or dusty environments, particularly when the support is part of a wall of an enclosed assembly.

[0018] According to an advantageous embodiment, the sealing gasket is a radial gasket comprising at least one lip. This type of gasket is very common and easy to develop and industrialize.

[0019] According to an advantageous embodiment, the orifice is oblong in shape.

[0020] According to an advantageous embodiment, the adjustment means comprise a A rod, one end of which is threaded and mounted in a tapped hole in the flange, with the other end of the rod mounted in a ball joint on the support wall, the adjustment means being positioned away from the first axis. This allows for easy adjustment of the flange's inclination relative to the support by rotating the rod.

[0021] According to an advantageous embodiment, the ball joint connecting member comprises a receiving piece provided with a housing and a spherical piece, the receiving piece being arranged on the support wall and the spherical piece being arranged at one end of the rod, the housing being configured to receive and retain the spherical piece, while allowing it to rotate freely within said housing. The rod is thus free to rotate about its axis and blocked against translation along this same axis.

[0022] According to an advantageous embodiment, the receiving piece is anchored in a cavity in the supporting wall.

[0023] According to an advantageous embodiment, the angle of inclination of the radiator with respect to the support wall can vary from an angle between -2.5° and +2.5°.

[0024] The invention also relates to a vehicle headlight incorporating a lighting device having at least one of the characteristics described above, the lighting device being configured to project a luminous representation onto a surface of the vehicle's environment.

[0025] According to an advantageous embodiment of the lighthouse, a support wall for the light device is integrated into a lighthouse casing.

[0026] The invention also relates to a vehicle equipped with a lighting device having at least one of the characteristics described above, the lighting device being configured to project a luminous representation onto a surface of the vehicle's environment.

[0027] Thus, thanks to all the functional and structural technical characteristics of the present invention, a lighting device is available that is suitable for various conditions of use, particularly in humid or dusty environments, including The angle of the light projection relative to the support, and therefore relative to the vehicle carrying the light, is easily adjustable. The light is also easily removable, simplifying maintenance. Brief description of the figures

[0028] Other features and advantages of the present invention will become apparent from the description below, with reference to the attached Figures 1 to 6, which illustrate various embodiments without being limiting in any way and on which: - [Fig.1] represents a perspective view from a first viewpoint of a lighting device according to the present invention, according to an example of an embodiment; - [Fig.2] represents a perspective view from a second viewpoint of the lighting device of [Fig.1], according to an example of an embodiment; - [Fig.3] represents an exploded view from the first point of view of the lighting device of [Fig.1], according to an example of implementation; - [Fig.4] represents a detailed view of the lighting device of [Fig.1], according to an example of implementation; - Figure 5 shows a cross-sectional view of the lighting device of Figure 1, according to an example embodiment; and - [Fig.6] represents a vehicle incorporating a lighting device according to the present invention. Description of examples of achievements

[0029] An example of a lighting device will now be described with reference to Figures 1 to 6. According to this example, the lighting device is designed to project a luminous representation onto a surface in the vehicle's environment, the vehicle being, for example, a car. The luminous representation allows, for example, a luminous representation to be projected onto the ground, the luminous representation being a logo or emblem associated with the vehicle or selected by a user. This lighting device is, for example, intended to be assembled in a vehicle's headlight in order to project the luminous representation onto the ground, in front of or behind the vehicle. The invention is not limited, however, to this particular embodiment and extends to any lighting device that allows a luminous representation to be projected onto a surface in the vehicle's environment, for example, from a door or a rearview mirror of the vehicle.

[0030] The lighting device allows the inclination of a light beam to be adjusted to project the graphic representation in order to adapt this angle of inclination to the position of the vehicle and to the relative position of the lighting device installed in the vehicle.

[0031] The lighting device also facilitates its disassembly and access to replaceable parts such as a light source or an optical system, while ensuring the sealing of the device.

[0032] Figures 1 to 5 represent a lighting device 100a configured to project a luminous representation onto a surface of an environment of a vehicle carrying the lighting device 100a according to one embodiment.

[0033] The lighting device 100a comprises a light source 98 and an optical system 99 associated with the light source 98. The light source 98 and the optical system 99 are configured to project a luminous representation onto a surface in the environment of a vehicle carrying the lighting device 100a, the light source 98 generating a plurality of light beams. Such a light source 98 is, for example, monochrome and thus produces a monochrome luminous representation. In an alternative embodiment, the light source is polychrome and thus projects a colored luminous representation. A filter is placed, for example, in the path of the light beams emitted by the light source 98, i.e., between the light source 98 and the optical system 99 or at the output of the optical system 99, which allows a first portion of the light beams to pass through it and blocks a second portion.In one variation, the filter allows certain light beams to pass through or partially blocks them. The light beams that pass through the filter, either fully or partially, then generate the light representation, with the shadow areas of the light representation corresponding to the light beams blocked by the filter. The light representation is thus monochrome with variations in intensity or polychromatic. In yet another variation, the filter allows certain wavelengths to pass through, thus generating a polychromatic light representation if the light source 98 generates beams comprising several wavelengths, for example, with emitted white light, or if the light source 98 alternately generates different light beams, each comprising one or more wavelengths.

[0034] The light source 98 comprises, for example, an electronic board 98a or printed circuit board (PCB) on which is arranged an assembly of at least one light-emitting diode, known as an LED. Each assembly of at least one LED is configured so that the emitted light, i.e., light beams of the plurality of light beams, is directed towards the optical system 99. According to other embodiments, the light source comprises a light emitter such as a halogen bulb or a laser.

[0035] The light source 98 is controlled, for example, so as to generate the light representation only when the vehicle carrying the device When the vehicle is stationary and / or its engine is off, the light source 98 is connected to a vehicle control unit, for example, a control unit responsible for the vehicle's lighting. For this purpose, as illustrated in [Fig. 2], the light source 98 is, for example, associated with an electronic board 98a on which a connector 98c is located, configured to receive an additional connector linked to the control unit via a wiring harness.

[0036] The optical system 99 as shown comprises several lenses. However, the invention is not limited to this example of an optical system but extends to any optical system comprising at least one lens and / or at least one reflector, that is, to an optical system comprising a lens, a reflector, or a combination of these elements. According to a particular embodiment, the at least one lens has a defined focal length so as to project the light representation distinctly at a defined distance, relative to the distance separating the light device 100a from the projection surface, for example, the ground. Thus, the focal length of the optical system, and therefore of each lens composing it, is determined as a function of this distance separating the light device 100a from the projection surface and as a function of the distance separating the light source 98 from the optical system 99.The optical axis of the light system is also oriented according to the projection surface, the optical axis defining the direction in which the light beams are projected.

[0037] The lighting device 100a also includes a heat sink 10 comprising a shell 101 with a collar 102, the shell 101 being configured to receive the light source 98 and the optical system 99. In the case where the light source 98 is associated with an electronic board 98a, the latter is, for example, glued and / or crimped onto a flat surface of the shell 101. The shell 101 then recovers the heat generated by the light source 98 when it is in operation, the heat sink 10 then serving to transport the heat generated by the light source 98 to exchange it with the ambient air; in other words, the heat sink 10 makes it possible to dissipate the heat produced by the light source 98 and thus to cool it, thereby ensuring the correct operating temperature of the light source 98.

[0038] According to a particular embodiment, the radiator 10 includes fins 101a. These fins 101a maximize the exchange surface between the radiator and the ambient air, thus promoting the evacuation of heat, i.e. promoting the cooling of the light source 98.

[0039] The lighting device 100a also includes a support wall 11 configured to receive the radiator 10. Such a support wall 11 is, for example, part of a housing of a headlight or projector, that is to say that the support wall 11 is integrated into one of the walls of the housing of this headlight, for example the rear part of the headlight. The rear part of the headlight is, for example, accessible from the vehicle's engine compartment if it is a front headlight, or from the vehicle's trunk if it is a rear headlight. This rear part is thus not visible from outside the vehicle, houses technical components such as connectors, bulb holders, or electronic circuits, and is accessible during maintenance. According to another particular embodiment, the support wall 11 is part of the wall of a closed compartment equipped with a transparent or glazed window through which the light rays exiting the optical system 99 are diffused, the lighting device 100a then being integrated into a door or a lower body panel of the vehicle, for example.

[0040] The example illustrated in [Fig.3] features a support wall 11 including an opening 110 configured to allow the passage of the shell 101 so as to position the collar 102 juxtaposed to the support wall 11. A dimensional clearance is defined between the shell 101 and the opening 110, allowing easy insertion of the shell 101 into the opening 110 while also allowing some mobility to the shell 101. Optionally, to ensure a seal between the shell 101 and the support wall 11, a sealing gasket 14 configured to conform to a contour of the opening 110 and an external contour of the shell 101 is placed between the support wall 11 and the shell 101 at the opening 110. Thus, when the support wall 11 is part of a closed device, the assembly comprising the closed device and the lighting device 100a is sealed against both dust and water, thus allowing the 100a lighting device to be used in environments requiring this type of sealing.In addition, the light source 98 and the optical system 99 are protected from external aggressions because they are positioned inside the light device 100a.

[0041] According to a particular embodiment, the sealing gasket 14 is a radial gasket comprising at least one lip. Such a gasket is common and easy to manufacture. In particular, it should conform to a shape with a continuous curve and no sharp angles for this type of gasket to be effective. Thus, the orifice 110 has a shape, for example, adapted to this type of gasket, the orifice 110 having a circular or oblong shape. The sealing gasket 14 is, for example, inserted into a groove 110a and abutted against a shoulder 110b so as to be blocked against translation in the groove, even when the shell 101 is inserted into the center of the gasket, which is then compressed between the shell 101 and the support wall 11. Conversely, the sealing gasket 14 is blocked against translation by the collar 102; it is therefore captive once the radiator 10 is positioned relative to the support wall 11.To guarantee long-term sealing, the number of lips is, for example, three.

[0042] The lighting device 100a also includes connecting means arranged between the collar 102 and the support wall 11 and configured to tilt the radiator 10 relative to the support wall along a first axis A1 11, so as to allow a modification of the angle of inclination of the collar 102 with respect to the support wall 11. The connecting means include, for example, two bosses which are arranged on one of the faces opposite the support wall 11 and the collar 102 and which come into contact at two points on the other of the faces opposite the support wall 11 and the collar 102, the two points of contact between the support wall 11 and the collar 102 defining the first axis Al around which the collar 102 pivots with respect to the support wall 11. The two points of contact are, for example, positioned symmetrically with respect to a plane of symmetry of the orifice 110 and / or on either side of the orifice 110, the first axis Al being, for example, parallel to a median plane of the orifice 110.

[0043] According to the particular embodiment illustrated in [Fig. 4], the two bosses 111 are arranged on the support wall 11. The two bosses 111 have a convex external surface on which the collar 102 rolls, the collar having a flat bearing surface, the instantaneous center of rotation of the collar 102 with respect to the support wall being the first axis AL

[0044] In order for the collar 102 to remain attached to the support wall 11, the light device 100a includes fastening means configured to maintain the collar 102 in contact with the support wall 11 according to the contact points. As illustrated in Figures 3 and 4, such fixing means are two screws 97 configured to screw into two corresponding threads 112 defined on the support wall 11 according to the two points of contact, the collar 102 comprising two through holes 103 also defined according to the two points of contact, the fixing means comprising two spacers 113 dimensioned to be placed respectively in the through holes 103 and to receive respectively the screws 97, the screws 97 coming against a bearing surface, the upper surface, of these spacers 113 so as to delimit the stopping position of the screws 97 with respect to the collar 102 when they are screwed into the support wall 11.The collar 102 comprises an outer face with two secondary bosses 104 arranged at the level of the through holes 103. The screws 97 each have a head. The underside of the heads of the screws 97 make contact at two points on the secondary bosses 104 when these screws 97 are screwed into the support wall 11 until they reach the stop. A thickness of material of the collar 102 is then held between the bearing surface of the boss 111 and the underside of the screw head, forming two bearing surfaces between which the collar 102 rolls. The spacers prevent the screws 97 from exerting pressure on the collar 102 and hindering, or even preventing, its movement relative to the support wall 11. According to another specific embodiment not illustrated, such fixing means are clips made in the support wall 11 at the level of each boss 111 configured to pass through the two through holes 103 defined in the collar 102 and bear against the outer face of the collar 102, this outer face being provided with two second bosses 104 arranged at the level of the through holes 103.

[0045] In order to adjust the relative inclination of the flange 102 with respect to the support wall 11, the lighting device 100a also includes adjustment means arranged between the support wall 11 and the flange 102 and configured to modify the angle of inclination of the flange 102 with respect to the support wall 11. For example, the adjustment means include a rod 12 extending along a second axis A2, a threaded portion 12a of which is mounted in a tapped hole 105 arranged on the flange 102 so as to obtain a screw / nut type connection. One end of the rod 12 is mounted in a ball joint arranged on the support wall 11, the adjustment means being arranged away from the first axis A1.Indeed, the distance of the adjustment means allows a lever arm to be created and thus the collar 102 to be rotated relative to the support wall 11, the rotation of the rod 12 around the second axis A2 generating a relative translation of the collar 102 relative to the rod 12 which cannot translate along the second axis A2, the rod 12 being blocked by the ball joint. The ball joint connecting member comprises, for example, a receiving piece 13 provided with a housing 131 and a spherical piece 12b, the receiving piece 13 being arranged on the support wall 11 and the spherical piece being arranged at one end of the rod 12, the housing 131 being configured to receive and retain the spherical piece 12b, while leaving it free to rotate in the housing 131. According to this particular embodiment, the angle of inclination of the radiator 10 with respect to the support wall 11 can vary from an angle between -2.5° and +2.5°.It should be noted that in the presence of a sealing gasket 14, it deforms to accommodate deformations resulting from the relative movement of the radiator 10 with respect to the support wall 11. It is therefore important to properly dimension the previously described clearance in order to ensure that the sealing gasket 14 functions without being damaged.

[0046] According to the particular embodiment illustrated in [Fig. 5], the receiving piece 13 is anchored in a cavity 114 of the support wall 11. The receiving piece 13 comprises, for example, circular fins 13a whose external diameter is greater than an internal diameter of the cavity 114. Optionally, at least one deformable washer 13c, also called a clip or staple, is inserted between circular fins 13a, the deformable washer 13c being, for example, made of steel. When the receiving piece 13 is inserted into the cavity 114 with, where applicable, one or more deformable washers, the circular fins and the deformable washers deform into an overall conical shape, their external diameter conforming to the inner diameter of cavity 114. The circular fins and deformable washers then anchor the receiving piece 13 in the cavity 114, preventing any return movement, i.e. that the receiving piece 13 is permanently trapped in the cavity 114, a tensile force of the receiving piece 13 towards the outside of the cavity 114 embedding the fins and deformable washers in the cavity 114. According to another particular embodiment not shown, the receiving piece 13 belongs to the support wall 11.

[0047] The spherical part 12b, also called the ball joint, is clipped into the housing 131, the interior space of which allows the free rotation of the ball joint 12b and whose entry section is smaller than the diameter of the spherical part 12b. The entry section is flexible so as to allow the spherical part 12b to pass through when a force is applied and then to hold it in the housing 131. Thus, the spherical part 12b is trapped in the housing 131 belonging to the receiving part 13, itself trapped in the support wall 11. Consequently, the spherical part 12b cannot translate relative to the support wall 12 and can only pivot in its housing 131, particularly around the second axis A2.

[0048] According to the particular embodiment illustrated in figures 3 and 5, the rod 12 includes at its end opposite the spherical part 12b a hexagonal head 12c allowing it to be operated manually using a tool, for example by means of a six-sided socket.

[0049] According to other particular embodiments, the adjustment means arranged between the support wall 11 and the flange 102 include a jack anchored at one end in the support wall 11 and at the other end in the flange 102, or a cam allowing adjustment of a gap between a part of the flange 102 and the support wall 11, the cam being for example fixed on the flange 102 and free to rotate about an axis relative to the flange 102, the cam having a variable thickness and bearing against a part of the support wall 12.

[0050] According to one embodiment, the adjustment means are motorized, for example by means of an electric motor. The motor is then directly connected to the rod 12 or via a gearbox. The motorization makes it possible, in particular, to adjust the angle of inclination of the radiator 10 supporting the light source 98 and the optical system 99 according to the attitude of the vehicle carrying the light device 100a.

[0051] Thus, the lighting device comprises a radiator and an adjustment mechanism whose roles are to orient the inclination of the projection axis of the lighting device relative to the support wall of the vehicle on which it is installed. This inclination adjustment then allows the lighting device to be adapted to numerous configurations by adjusting the inclination of the radiator relative to the support wall. in order to adjust the lighting system to obtain the desired graphic representation, particularly in terms of size and proportions. The possibility of installing the lighting system on numerous vehicles allows, for example, the standardization of many of its components and offers a quick technical solution for integration into new vehicles. Furthermore, the lighting system comprises few parts, each with simple shapes that are easily assembled. Indeed, the assembly of the 100a lighting system shown in Figures 1 to 5, for example, involves the following steps.

[0052] In a first step, the sealing gasket 14 is placed in the groove 110a of the orifice 110 and brought against the shoulder 110b.

[0053] In a second step, the receiving piece 13 is inserted into the housing 114 of the support wall 11.

[0054] In a third step, the rod 12 is inserted and screwed, for example halfway between the threaded part 12a and the threaded hole 105 of the collar 102 of the support 10.

[0055] In a fourth step, the support 10 is put in place relative to the support wall 11, the shell is passed through the orifice 110 and crushes the sealing gasket 14 until the collar 102 meets the bosses 111. During this operation, the spherical part 12b of the rod 12 is inserted into the housing 131.

[0056] In a fifth step, the screws 97 serving as fastening means are inserted through the through holes 103 and screwed into the threads 112 until they stop.

[0057] In a sixth operation, the angle of inclination of the radiator 10 relative to the support wall 11 is adjusted, for example manually by an operator.

[0058] This design of the lighting device facilitates its maintenance. Indeed, it is easy to disassemble and access the various parts, particularly the light source and the optical system. The number of parts composing this lighting device is also limited, reducing its manufacturing cost and facilitating the availability of its components.

[0059] Fig. 6 illustrates a vehicle 100 carrying a light device 100a as shown above, for example according to the first embodiment, the light device 100a being configured to project a light representation 100b onto a surface of the vehicle's environment.

[0060] The light device 100a is for example installed in a headlight of the vehicle 100 and is configured to project a light representation 100b onto a ground surface outside the vehicle 100.

[0061] The invention is not limited to this configuration, however, but extends to any vehicle or any vehicle headlight equipped with the light projection device presented above.

[0062] It should be noted that this detailed description relates to a particular embodiment of the present invention, but in no way does this description limit the scope of the invention; on the contrary, its purpose is to remove any possible inaccuracy or misinterpretation of the following claims.

[0063] It should also be noted that the reference signs in parentheses in the following claims are in no way intended to be limiting; these signs are solely intended to improve the intelligibility and understanding of the following claims and the scope of the protection sought.

Claims

Demands

1. A lighting device (100a) of a vehicle (100), comprising a light source (98) and an optical system (99) associated with the light source, the light source (98) and the optical system (99) being configured to project a luminous representation onto a surface of the vehicle's environment, said lighting device being characterized in that it comprises: - a radiator (10) comprising a housing (101) having a flange (102), the housing (101) being configured to receive the light source (98) and the optical system (99), - a support wall (11) configured to receive the radiator (10), - connecting means arranged between the flange (102) and the support wall (11) and configured to tilt the radiator (10) about a first axis (A1) relative to the support wall (11), so as to allow a change in the angle of inclination of the flange (102) relative to the support wall (11),- adjustment means arranged between the support wall (11) and the collar (102) and configured to modify the angle of inclination of the collar (102) relative to the support wall (11).

2. A lighting device (100a) according to claim 1, in which the support wall (11) includes an opening (110) configured to allow the passage of the shell (101) so as to place the collar (102) in a manner juxtaposed to the support wall (11), the connecting means comprising two bosses which are arranged on one of the faces facing the support wall (11) and the collar (102) and which come into contact at two points on the other of the faces facing the support wall (11) and the collar (102), the two points of contact between the support wall (11) and the collar (102) defining the first axis (Al) around which the collar (102) pivots relative to the support wall (11).

3. A lighting device (100a) according to claim 2, wherein the two bosses (111) are arranged on the support wall.

4. A lighting device (100a) according to any one of claims 2 or 3, which includes fastening means configured to maintain the collar in contact with the support wall (11) according to said contact points.

5. A lighting device (100a) according to claim 4, wherein the fastening means comprise two screws (97) configured to screw into two corresponding threaded holes (112) defined on the support wall (11) with respect to the two points of contact, the flange (102) comprising two through holes (103) also defined with respect to the two points of contact, the fastening means comprising two spacers (113) dimensioned to be placed respectively in the through holes (103) and to receive respectively the screws (97) which abut against a bearing surface of these spacers (113) so as to delimit the stopping position of the screws (97) relative to the flange (102) when they are screwed into the support wall (11), the flange (102) comprising an outer face provided with two second bosses (104) arranged at the level of the through holes (103), the screws (97) each comprising a head,the underside of the screw heads (97) making contact at two points on the second bosses (104) when these screws (97) are screwed into the support wall (11) until they reach said stop.

6. A light device (100a) according to any one of claims 2 to 5, which includes a sealing gasket (14) configured to fit a contour of the orifice and an external contour of the shell.

7. A light-emitting device (100a) according to claim 6, wherein the sealing gasket (14) is a radial gasket comprising at least one lip.

8. A light device (100a) according to any one of claims 2 to 7, wherein the orifice (110) is oblong in shape.

9. A lighting device (100a) according to any one of claims 1 to 8, wherein the adjustment means comprise a rod (12) having a threaded portion (12a) mounted in a tapped hole (105) arranged on the collar (102), one end of the rod (12) being mounted in a ball joint connecting member arranged on the support wall (11), said adjustment means being arranged away from the first axis (Al).

10. A lighting device (100a) according to claim 9, wherein the ball joint comprises a receiving piece (13) having a housing (131) and a spherical piece (12b), the receiving piece (13) being arranged on the support wall (11) and the piece spherical being arranged at one end of the rod (12), the housing (131) being configured to receive and hold the spherical piece (12b), while leaving it free to rotate in said housing (131).

11. A lighting device (100a) according to claim 10, wherein the receiving piece (13) is anchored in a cavity (114) of the support wall (11).

12. Lighting device (100a) according to any one of claims 1 to 11, wherein the angle of inclination of the radiator (10) with respect to the support wall (11) can vary from an angle between -2.5° and +2.5°.

13. Headlight of a vehicle (100), which incorporates a light device (100a) having the characteristics of any one of claims 1 to 12, said light device (100a) being configured to project a light representation (100b) onto a ground surface outside the vehicle (100).

14. Headlight of a vehicle (100) according to claim 13, wherein a support wall (11) of said light device (100a) is integrated into a housing of said headlight.

15. Vehicle (100) equipped with a lighting device (100a) having the characteristics of any one of claims 1 to 12 or of a headlight according to claim 13 or 14.

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