Motor vehicle lighting module having blocking screen for positioning light source

Abstract

The invention relates to a lighting module (2) for a motor vehicle, comprising: a plate (4) holding a light source (6.1) capable of emitting light; a light collector (14) having at least one reflective surface capable of reflecting the light as a reflected light beam; an optical device capable of projecting a reflected light beam; a screen (10.1) located in front of the light source (6.1) along the main propagation direction of the reflected light beam and configured to concentrate light, referred to as direct light, directly from the light source (6.1); the panel (4) comprises an opening (4.1) through which the screen (10.1) extends, said opening (4.1) comprising at least one edge (4.1. 1, 4.1. 2) resting on said screen (10.1).

Description

Technical Field

[0001] The invention relates to the technical field of lighting and signalling, more particularly for applications in the automotive field. Background Art

[0002] It is generally known to produce a cutoff illumination beam by using one or more lighting modules with a folder. Such a lighting module conventionally comprises a light collector having a reflective surface exhibiting rotational symmetry, the reflective surface having an elliptical profile which is in the form of a cap in a half-space defined by a horizontal plane. A substantially point light source of the light emitting diode type is located at a first focus on the reflective surface and irradiates into the half-space in the direction of the surface. The light is therefore reflected in a converging manner towards a second focus on the reflective surface. Another generally flat reflective surface having a cutoff edge at the second focus ensures that the light rays that do not precisely pass through the second focus are reflected upward, and these rays are then refracted by a thick lens towards the bottom of the illumination beam. The reflective surface is generally referred to as a "folder" because it "folds" those rays that would otherwise form the upper part of the illumination beam towards the top of the projection lens. Such a lighting module has the disadvantage of requiring the folder and the cutoff edge to be positioned with high precision. Moreover, the projection lens must be a thick lens due to its small focal length, thereby increasing its weight and complicating its manufacture (especially in terms of dents). In addition, the light collector has a certain height and therefore has a certain occupied area in the height direction.

[0003] The published patent document WO 2020 / 025171 A1 discloses a light module, in particular for motor vehicles, comprising a light collector having a reflective surface that collects and reflects light emitted by a light source in a light beam, similar to a light module with a folder. The light module also includes an optical projection system (such as a lens), which is specifically configured to project the light beam in question by forming an image of the reflective surface of the light collector. To this end, the optical projection system has a focus located on the reflective surface (e.g., at the rear edge of the reflective surface) so as to correctly image the edge and form a clean cutoff line in the projected light beam. However, some light emitted by the light source but not reflected by the reflective surface of the light collector may reach the optical projection system and degrade the projected light beam. For this reason, a screen or barrier is provided and arranged in front of the light source. The document does not address the production of the screen or barrier, especially in the context of industrial applications. Summary of the invention

[0004] The object of the present invention is to overcome at least one of the above-mentioned disadvantages of the prior art. More particularly, the present invention aims to optimize the construction of a lighting module comprising at least one screen or barrier arranged in front of a light source in terms of tolerance, compactness, simplicity of construction and ease of assembly.

[0005] The present invention relates to a lighting module for a motor vehicle, the lighting module comprising:

[0006] a plate holding at least one light source capable of emitting light;

[0007] a light collector having a reflective surface capable of reflecting light into a reflected light beam;

[0008] an optical device capable of projecting a reflected light beam;

[0009] a screen located in front of the light source along the main propagation direction of the reflected light beam and configured to focus light rays coming directly from the light source, called direct rays;

[0010] Notably, the plate includes an opening through which the screen extends, the opening including at least one edge resting on the screen.

[0011] Advantageously, the optical means are capable of projecting the reflected light beam by imaging a portion of the reflective surface. Advantageously, the optical means comprise a focal point located on a rear portion of the reflective surface.

[0012] Advantageously, the optical device is a projection lens.

[0013] According to an advantageous embodiment of the invention, the light source is positioned directly on the board. In particular, the board may be a printed circuit board or PCB.

[0014] According to an advantageous embodiment of the invention, the screen is in contact with the board only by means of at least one edge of the opening. It is therefore understood that the screen does not rest on the board. In particular, the light source is located on a first side of the board and the screen extends from a portion of the lighting module located on a second side of the board opposite to the first side and is configured to pass through the opening from the second side of the board to the first side. In other words, the screen is different from the portion that rests on the first side of the board and includes a pin that is configured to pass through the opening from the first side of the board to the second side. The portion of the lighting module located on the second side of the board can, for example, be a heat sink for the light source.

[0015] According to an advantageous embodiment of the invention, the opening is located between the light source and the front edge of the panel.

[0016] According to an advantageous embodiment of the invention, the screen comprises at least one boss in contact with at least one rest edge.

[0017] According to an advantageous embodiment of the invention, the at least one rest edge comprises a front edge and / or a rear edge of the opening along the main propagation direction of the reflected light beam.

[0018] According to an advantageous embodiment of the invention, the at least one rest edge comprises a left-hand edge and / or a right-hand edge of the opening along the main propagation direction of the reflected light beam.

[0019] According to an advantageous embodiment of the invention, the plate further comprises a positioning hole in which the positioning pin engages, said positioning hole being at a distance from the opening in a direction transverse to the main propagation direction of the reflected light beam.

[0020] According to an advantageous embodiment of the invention, the distance between the positioning hole and the opening is greater than or equal to 40%, preferably 50%, of the total width of the plate in a direction transverse to the main propagation direction of the reflected light beam.

[0021] According to an advantageous embodiment of the invention, the shield and, if applicable, the positioning pins protrude from the heat sink of the at least one light source, extending below the board and supporting the board. Advantageously, the shield and, if applicable, the positioning pins are formed integrally with the heat sink.

[0022] According to an advantageous embodiment of the invention, the plate further comprises at least one fastening hole through which a fastening screw passes with a radial clearance of at least 0.15 mm.

[0023] According to an advantageous embodiment of the invention, the screen has an upper side which is inclined in the main propagation direction of the reflected light beam towards the bottom part of the optical device.

[0024] According to an advantageous embodiment of the invention, the light source and the reflecting surface perform a complementary function of a motor vehicle lighting function with horizontal cut-off. The complementary function is a "flat spot" function.

[0025] Advantageously, the light source is a first light source, the reflective surface is a first reflective surface and the reflected light beam is a first reflected light beam, the lighting module comprises at least one second light source, the light collector comprises at least one second reflective surface, the at least one second reflective surface is capable of reflecting light emitted by the at least one second light source as a second reflected light beam that can be projected by the optical device. Advantageously, the lighting module comprises at least one third light source, and the light collector comprises at least one third reflective surface, the at least one third reflective surface is capable of reflecting light emitted by the at least one third light source as a third reflected light beam that can be projected by the optical device.

[0026] The features of the invention are advantageous in that they make it possible to ensure precise positioning of the board and of the light source by using a screen or stop that is already present for optical reasons. Moreover, having the edge of the opening (opposite the outer edge of the board) rest on the screen makes it possible to achieve tighter tolerances and therefore more precise positioning. When the board is manufactured, after forming its contour, in particular by cutting and / or machining, the board is fixed by clamping on its outer edge, so that drilled and machined elements can be produced and electrical tracks and components (basically light sources) can be placed thereon. Therefore, the placement of light sources and machined elements (such as in particular the opening according to the invention) provides close tolerances, since they are placed and produced during the same gripping operation of the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] [ Figure 1 ] is a perspective view of a lighting module according to the present invention;

[0028] [ Figure 2 ]include[ Figure 1 ] two stereoscopic views of the light collector of the lighting module;

[0029] [ Figure 3 ]yes[ Figure 1 ] a three-dimensional view of a heat sink of a lighting module;

[0030] [ Figure 4 ]yes[ Figure 1 ] is a schematic longitudinal cross-sectional view of the lighting module in FIG. 1 , illustrating the function of the screen block;

[0031] [ Figure 5 ]yes[ Figure 1 ] is a top view of the lighting module in FIG. 1 , showing the plate holding the light source;

[0032] [ Figure 6 ] is a perspective view of an opening in a plate through which the screen passes and on which the opening rests;

[0033] [ Figure 7 ]yes Figure 5 and Figure 6 A stereogram of the plate in FIG. DETAILED DESCRIPTION

[0034] In the following description, terms related to relative positions, such as "front", "rear", "above", "top", "bottom", "below", "under" and the like are used with respect to the lighting module in its normal assembly position on a motor vehicle, as particularly described in [ Figure 1 ] as shown in ].

[0035] [ Figure 1] is a perspective view of a lighting module for a motor vehicle according to the present invention, the light collector of the lighting module does not exist but is shown in [ Figure 2 ]middle.

[0036] The lighting module 2 comprises a printed circuit board 4, commonly referred to as a PCB. The board 4 can be made of a material commonly referred to as FR-4 (Flame Retardant 4), which is a glass fiber reinforced epoxy resin composite material. Of course, other materials can be envisaged as long as they have electrical insulation properties and the ability to receive electrical tracks, in particular made of copper. The board 4 holds a plurality of light sources 6.1, 6.2, 6.3 and 6.4, which correspond to different lighting functions. The light sources 6.1, 6.3 and 6.4 are each single in this case, while the light source 6.2 is multiple, in this case five. In particular, the light sources 6.1, 6.2, 6.3 and 6.4 are positioned directly on the board 4. The lighting module 2 also includes an optical projection device formed by a projection lens 8. The lighting module 2 also includes a heat sink 12, which extends below the board 4 and supports the board 4. The heat sink 12 is made of a thermally conductive material, preferably a metal material, and extends behind the board 4 to form cooling fins (not shown).

[0037] As in [ Figure 1 ], the lighting module 2 includes a plurality of screens 10.1, 10.2, 10.3 and 10.4 arranged in front of the light sources 6.1, 6.2, 6.3 and 6.4, respectively. Each of these screens is configured to collect the light emitted forward by the light source, the screen is arranged in front of the light source, and in the absence of the screen, the light will reach the projection lens 8 and interrupt the projected light beam. The lighting module 2 further includes a light collector ([ Figure 1 ]), the light collector having reflective surfaces associated with the different light sources 6.1, 6.2, 6.3 and 6.4 and configured to reflect the light emitted by these light sources towards the projection lens. The screens 10.1, 10.2, 10.3 and 10.4 are configured to intercept light rays directly coming from the associated light sources, so-called direct rays, i.e. rays that are not reflected by the associated reflective surfaces and that are able to reach the projection lens 8.

[0038] [ Figure 2] shows the above-mentioned light collector 14. The light collector 14 forms a plurality of caps 14.1, 14.2, 14.3 and 14.4, each cap being provided with a reflective surface 16.1, 16.2, 16.3 and 16.4, respectively. Each of these reflective surfaces 16.1, 16.2, 16.3 and 16.4 is configured to collect the light rays emitted by the corresponding light source 6.1, 6.2, 6.3 and 6.4 and reflect them as a reflected light beam directed to the projection lens 8. These surfaces 16.1, 16.2, 16.3 and 16.4 may have a parabolic or elliptical profile exhibiting a rotational symmetry around an axis oriented substantially along the optical axis of the lighting module 2. The light collector 14 is advantageously made in one piece by injection molding of a plastic material. The reflective surfaces 16 . 1 , 16 . 2 , 16 . 3 and 16 . 4 are advantageously produced by metallizing the inner surfaces of the caps 14 . 1 , 14 . 2 , 14 . 3 and 14 . 4 of the light collector 14 .

[0039] [ Figure 3 ]yes[ Figure 1 ] is a perspective view of a heat sink 12 of a lighting module 2 in FIG. The heat sink 12 comprises a front portion 12.1 intended to support the plate 4 and the screens 10.1, 10.2, 10.3 and 10.4, and a rear portion 12.2 provided with cooling fins (not visible when they are facing downwards) in order to dissipate the heat generated by the light source. To this end, the front portion 12.1 of the heat sink forms on it an area for receiving the plate, which area notably comprises fastening holes 12.1.1 intended to receive fastening screws passing through the plate, and locating pins 12.1.2 intended to engage in locating holes formed in the plate. The receiving area is also generally flat so that the plate can rest on it.

[0040] Advantageously, the screens 10 . 1 , 10 . 2 , 10 . 3 and 10 . 4 are formed integrally with the heat sink 12 , however it is understood that one or more screens attached to said heat sink 12 may also be envisaged.

[0041] [ Figure 4 ] schematically shows a longitudinal section of a submodule of a lighting module, the submodule being formed by a light source 6.1, a cap 14.1 and a reflecting surface 16.1. The figure illustrates the ability of the reflecting surface 16.1 to collect the light rays emitted by the light source 6.1, directed along the cap 14.1 towards the light collector 14 and perpendicular to the main direction of the plate 4, and to reflect them towards the projection lens 8. Advantageously, the projection lens 8 has a focal point which is located on the rear part of the reflecting surface 16.1, preferably on the rear edge of said surface, advantageously on the optical axis 18 of the lighting submodule, in order to image the rear edge in question. This approach makes it possible to produce a light beam projected with a sharp horizontal cut-off edge, since the rear edge of the reflecting surface 16.1 is sharply imaged.

[0042] exist[ Figure 4 ] it can be seen that the screen 10.1 gathers and intercepts the light 20 emitted forward by the light source 6.1 and which would otherwise reach the projection lens and interfere with the projected light beam (particularly in the horizontal cutoff).

[0043] exist[ Figure 4 ] it can also be seen that the screen 10.1 projects from the radiator 12, more particularly from its front portion 12.1, and extends through the opening 4.1 made in the plate 4. More particularly, the opening 4.1 comprises a front edge 4.1.1 resting on the screen 10.1 and a rear edge 4.1.2, opposite to the front edge 4.1.1, also resting on the screen 10.1. In particular, the screen 10.1 is in contact with the plate 4 only by means of the front edge 4.1.1 and the rear edge 4.1.2 of the opening 4.1. To this end, the screen 10.1 has a boss in contact with the front edge 4.1.1 and another boss in contact with the rear edge 4.1.2. These bosses make it possible to ensure a contact close to a point contact and therefore facilitate the engagement of the opening 4.1 around the screen 10.1 when the plate 4 is placed on the radiator 12.

[0044] Having at least one edge of the opening 4.1 in the plate 4 rest on the screen 10.1 makes it possible to ensure a precise positioning of the plate 4 while using already existing elements. It should be noted that, as [ Figure 4 ] Having the plate resting on two edges as shown is optional, that is, resting on a single edge (for example, resting only on the front edge 4.1.1 or the rear edge 4.1.2) also makes it possible to obtain precise positioning of the plate 4, the only difference being that the operator has to exert a force on the plate when assembling the plate 4, which force is directed so that one edge rests on the screen before tightening one or more fastening screws.

[0045] The light source 6.1 together with the light collector 4 and in particular the cap 14.1 is arranged on a first side of the plate 4, and the heat sink 12 is arranged on a second side of the plate 4 opposite to the first side. The shield 10.1 is formed integrally with the heat sink 12 and is configured to extend through the opening 4.1 from the second side of the plate 4 to the first side of the plate 4. It should therefore be understood that the shield 10.1 extends through the opening 4.1 in the plate 4 and protrudes from the plate 4 on the first side of the plate 4 so that it is arranged in front of the light source 6.1.

[0046] [ Figure 5 ]yes[ Figure 1 ] shows the top view of the lighting module in the figure, showing the assembly and positioning of the plate 4. The plate 4 includes, in addition to the opening 4.1, a positioning hole 4.2, which surrounds the above reference [ Figure 3] is engaged with the positioning pins 12.1.2 described in detail above. In this case, the positioning pins 12.1.2 and the corresponding positioning holes 4.2 ensure positioning along the longitudinal direction X and the transverse direction Y, and the shield 10.1 and the corresponding openings 4.1 ensure positioning only along the direction X. It can be seen that the positioning pins 12.1.2 and the corresponding positioning holes 4.2 are circular and have limited radial clearance, for example a clearance less than or equal to 0.1 mm, while the openings 4.1 positioned laterally relative to the positioning holes 4.2 have significant clearance in the lateral direction Y and limited clearance in the longitudinal direction X, for example a clearance less than or equal to 0.1 mm or even zero. This configuration makes it possible to ensure accurate positioning of the plate 4 in the plane XY relative to the radiator 12, more particularly the front part 12.1 of said radiator 12.

[0047] During assembly of the plate 4 on the heat sink 12, the positioning pins 12.1.2 pass through the positioning holes 4.2 and the shield 10.1 passes through the opening 4.1 from the second side of the plate to the first side of the plate 4. Once the plate 4 is correctly positioned in the above manner, it can be fastened to the heat sink 12 by means of the fastening screws 22 which pass through corresponding holes formed in the plate 4 and engage in the [ Figure 3 ] in the fastening holes 12.1.1 formed in the front part 12.1 of the heat sink 12 as described above. It should be noted that the holes in the plate 4 receiving the fastening screws 22 therefore have sufficient radial clearance relative to said fastening screws 22 so as not to prevent the above positioning. This radial clearance may be greater than or equal to 0.15 mm and / or less than or equal to 0.5 mm.

[0048] refer to[ Figure 5 ], the positioning pins 12.1.2 and the corresponding positioning holes 4.2 ensure the positioning of the point in the plane XY, i.e. positioning in the longitudinal direction X and in the transverse direction Y, while the opening 4.1 and the screen stop 10.1 only ensure positioning in the longitudinal direction X. When only one of the two edges, the front edge 4.1.1 and the rear edge 4.1.2, contacts the screen stop 10.1, the positioning is in a single direction, i.e. in the direction +X for the front edge 4.1.1 or in the direction -X for the rear edge 4.1.2. This configuration ensures balance while avoiding potential undesirable hyperstaticity.

[0049] However, it should be noted that other configurations than those described above can be envisaged. It can be provided that at least one of the left side edge 4.1.3 and the right side edge 4.1.4 of the opening 4.1 contacts the screen 10.1 in order to ensure positioning in the direction Y, +Y or -Y. In this case, the positioning ensured by the positioning pins 12.1.2 and the corresponding positioning holes 4.2 is configured to ensure positioning only in the direction X, +X or -X (i.e. with lateral clearance). In addition, as described above, the opening 4.1 and the screen 10.1 also ensure positioning along the longitudinal direction X, i.e. wherein only one or each of the two edges, the front edge 4.1.1 and the rear edge 4.1.2, contacts the screen 10.1.

[0050] The positioning hole 4 . 2 is advantageously at a distance from the opening 4 . 1 along the transverse direction Y. The distance in question is advantageously greater than or equal to 40% of the total width of the plate 4 along the transverse direction Y, preferably 50%.

[0051] [ Figure 6 ] is a perspective view of an opening 4.1 in a plate 4 through which a screen 10.1 passes and on which the opening rests. The figure shows a front boss 10.1.1 and a rear boss 10.1.2 of the screen 10.1, which are in contact with the front edge 4.1.1 and the rear edge 4.1.2 of the opening 4.1. Each of these bosses 10.1.1 and 10.1.2 forms a convex surface capable of ensuring point contact or contact close to point contact and thus forming a surface for guiding the corresponding edge during the placement of the plate 4. Each of the bosses 10.1.1 and 10.1.2 advantageously has a radius of curvature between 0.3 mm and 1 mm. As described above, the contact between the opening 4.1 and the screen may be made through only one of the edges 4.1.1, 4.1.2, 4.1.3 and 4.1.4 of the opening 4.1, through two opposite edges, such as the front edge 4.1.1 and the rear edge 4.1.2 or the side edges 4.1.3 and 4.1.4, or through at least one of the front edge 4.1.1 and the rear edge 4.1.2 and at least one of the side edges 4.1.3 and 4.1.4. The screen 10.1 may then have a corresponding boss for the or each edge in contact therewith, and this boss may correspond to the boss 10.1.1 or the boss 10.1.2.

[0052] [ Figure 7 ]yes Figure 5 and Figure 64.3. The figure shows the fastening holes 4.3. The opening 4.1 is advantageously located in front of the light source 6.1, in this case between the light source 6.1 and the front edge 4.4 of the plate 4, since the light source 6.1 can be positioned further away from the front edge 4.4 of the plate 4 than the other light sources 6.2, 6.3 and 6.4. The light source 6.1 and the associated reflective surface 16.1 ([ Figure 2 ]) is configured to perform a lighting function, such as with the light source 6.2 and its associated reflective surface 16.2 ( Figure 2 ) performs a so-called "flat" function that complements the legal horizontal cut-off lighting function called "dipped beam". This so-called "flat" complementary function produces a light beam with a horizontal cut-off that is aligned with the cut-off of the dipped beam function.

[0053] In the example shown, the light source 6.1 and the associated reflective surface 16.1 ([ Figure 2 ]) is configured to perform a so-called "flat spot" lighting function. This so-called "flat spot" complementary function produces a light beam having the same characteristics as the light beam produced by the so-called "flat" function, however, this light beam is centered horizontally and also vertically on the optical axis of the lighting module.

[0054] To produce a "flat" or "flat spot" lighting function, the associated reflective surface 16.1 ([ Figure 2 ]) has a certain shape so that it is consistent with the other light sources 6.2 and 6.3 and their associated reflective surfaces 16.2 and 16.3 ([ Figure 2 ]) compared to other lighting functions performed by the reflected light beam, the light rays of the reflected light beam are less inclined so that the front edge 4.3 of the plate 4, which is positioned further forward relative to the light source 6.1, does not interfere with the reflected light beam in question.

[0055] Light source 6.3 and associated reflecting surface 16.3 ([ Figure 2 ]) performs a bent lighting function, which is commonly represented by the acronym SBL, for static bent light.

[0056] Light source 6.4 and associated reflecting surface 16.4 ([ Figure 2 ]) is performed with the light source 6.2 and its associated reflective surface 16.2 ([ Figure 2 ]) is a so-called "highway" lighting function which complements the horizontal cut-off lighting function performed by the light source 6.1. This complementary function produces a beam similar to that of the "flat spot" function, which, however, is more concentrated horizontally and vertically on the optical axis of the lighting module. It is also compatible with the positioning opening in the plate mentioned above, i.e. the rays of the reflected light beam are not too inclined, so that the front edge 4.4 of the plate 4, if it is located further forward relative to the light source 6.1, does not interfere with the reflected light beam in question.

[0057] Generally, it should be noted that, depending on the method used to manufacture a printed circuit board such as board 4, the creation of an opening in the board allows for the creation of an opening which is notably machined to be closer to the outer edge (such as the front edge 4.4 ([ Figure 7 ]))) The edge for contact with the screen can be produced with significantly greater precision. The opening cooperating with the screen according to the invention thus enables precise positioning of the board and the light source at low cost without complicating the assembly operation. It also makes it possible to use the opening already existing for the screen, thus avoiding the creation of a further opening or positioning hole which tends to reduce the surface area available for placing electrical tracks, light sources and other components such as, in particular, connectors.

Claims

1. A lighting module (2) for a motor vehicle, the lighting module comprising: - a plate (4) holding at least one light source (6.1) capable of emitting light; - a light collector (14) having a reflective surface (16.1) capable of reflecting the light rays into a reflected light beam; - optical means (8) capable of projecting said reflected light beam; a screen (10.1) located in front of the light source (6.1) along the main direction of propagation of the reflected light beam and configured to collect the light rays coming directly from the light source (6.1), called direct rays; It is characterized in that The plate (4) comprises an opening (4.1), through which the screen (10.1) extends, and the opening (4.1) comprises at least one edge ( 4.1.1，4.1.2)。 2. The lighting module (2) according to claim 1, wherein: The light source (6.1) is positioned directly on the plate (4).

3. The lighting module (2) according to claim 1 or 2, wherein: The shield (10.1) is formed only by means of the at least one edge ( 4.1.1, 4.1.2) are in contact with the plate (4).

4. The lighting module (2) according to claim 3, wherein: The light source (6.1) is located on a first side of the board (4), and the shield (10.1) extends from a portion of the lighting module located on a second side of the board (4) opposite to the first side, and is configured to pass through the opening (4.1) from the second side of the board to the first side.

5. The lighting module (2) according to one of claims 1 to 4, wherein: The opening (4.1) is located between the light source (6.1) and the front edge of the plate (4).

6. The lighting module (2) according to one of claims 1 to 5, wherein: The shield (10.1) comprises a At least one boss (10.1.1, 10.1.2) contacts the substrate.

7. The lighting module (2) according to one of claims 1 to 6, wherein: The at least one rest edge comprises a front edge (4.1.1) and / or a rear edge (4.1.2) of the opening (4.1) along the main propagation direction of the reflected light beam.

8. The lighting module (2) according to one of claims 1 to 7, wherein: The at least one rest edge comprises a left edge (4.1.3) and / or a right edge (4.1.4) of the opening (4.1) along the main propagation direction of the reflected light beam.

9. The lighting module (2) according to one of claims 1 to 8, wherein: The plate (4) further comprises a positioning hole (4.2) in which a positioning pin (12.1.2) engages, the positioning hole (4.2) being at a distance from the opening (4.1) in a direction transverse to the main propagation direction of the reflected light beam.

10. The lighting module (2) according to claim 9, wherein: The distance between the positioning hole (4.2) and the opening (4.1) is greater than or equal to 40%, preferably 50%, of the total width of the plate (4) along the direction transverse to the main propagation direction of the reflected light beam.

11. The lighting module (2) according to one of claims 1 to 10, wherein: The shield (10.1) and, where applicable, the positioning pins (12.1.2) protrude from the heat sink (12.1) of the light source (6.1) so as to extend below the plate (4) and support the plate.

12. The lighting module (2) according to one of claims 1 to 11, wherein: The plate (4) further comprises at least one fastening hole (4.3) through which a fastening screw (22) passes with a radial clearance of at least 0.15 mm.

13. The lighting module (2) according to one of claims 1 to 12, wherein: The screen (10.1) has an upper side which is inclined in the main propagation direction of the reflected light beam towards the bottom part of the optical device (8).

14. The lighting module (2) according to one of claims 1 to 13, wherein: The light source (6.1) and the reflecting surface (16.1) perform complementary functions of a motor vehicle lighting function with horizontal cut-off.

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