Motor vehicle lighting device

Abstract

The invention relates to a motor vehicle lighting device (30) comprising a housing which houses: a first module (31) for emitting a first light beam; a second module (32) for emitting a second light beam extending above the first light beam; a third module (33) for emitting a third segmented light beam extending above the second light beam; and an optical projection system (34); characterized in that the second module (32) is arranged below the first module (31); the third module (33) is arranged below the second module (32), and each of the modules comprises: a plurality of light sources; a light collector (32.11; 32.21) for collecting the light rays emitted by the plurality of light sources and reflecting them as a light beam; a portion (31.12, 31.22, 31.32, 32.12, 32.22, 33.12, 33.22, 33.32) of the optical projection system (34) arranged to project the light beam, said portion forming an image of the light collector (32.11, 32.21).

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of lighting and light signaling, more particularly, to the field of lighting and light signaling in the field of motor vehicles.

[0002] The present invention relates to the field of lighting and light signaling. BACKGROUND

[0003] In the field of lighting for motor vehicles, it is generally known practice to use optical devices comprising a light source, a collector with a reflective surface, an optical system of the lens type and a shield positioned between the collector and the lens. In this type of device, the light rays reflected by the collector are partially intercepted by the shield before being projected by the lens, the edges of the shield thus forming the cutoff of the projected light beam.

[0004] However, this type of device requires the use of a lens with a large focal length and a collector with a large size. If it is desired to reduce the focal length while maintaining the same optical power, it is necessary to increase the size of the lens. However, if it is desired to use a device comprising a plurality of lighting modules and to superimpose these lighting modules together, for example for aesthetic reasons, the lighting device becomes bulky and cannot be installed in the limited space allocated to it in a motor vehicle.

[0005] One object of the present invention is to propose a lighting module that allows the use of several modules in the same housing, the volume of which is compact and can therefore be positioned in a limited space. SUMMARY

[0006] The present invention relates to a lighting device for a motor vehicle, the device comprising a housing in which at least: a first lighting module designed to emit a first light beam with a flat cutoff; a second lighting module designed to emit a second light beam extending at least partially above the first light beam; a third lighting module designed to emit a segmented light beam, each sector of which can be selectively controlled, the third light beam extending at least partially above the second light beam; an optical projection system common to the first, second and third modules.

[0007] The device is notably such that the second lighting module is arranged below the first lighting module in the housing, the third lighting module is arranged below the second lighting module in the housing, each of the first, second and third lighting modules comprising a plurality of light sources; a collector comprising a reflective surface configured to collect the light rays emitted by the plurality of light sources and to reflect them as a light beam; a portion of the optical projection system configured to project said light beam, said portion being configured to form an image of the reflective surface of the collector.

[0008] For example, the first and second lighting modules correspond to a light beam usually used for regulated lighting of the low beam type. The third lighting module is significantly segmented, so that each segment of said module can be controlled selectively, so that a non-dazzling lighting function of the high beam type can be produced. The first lighting module can be positioned on the second lighting module, which itself is positioned on the third lighting module. The optical system can be a lens positioned at the front of the device and common to the three lighting modules. The optical system can also be a reflector or a combination of one or more reflectors and one or more lenses. It is the projection system that allows the light beam emitted by the light sources to be projected onto the road.

[0009] Each lighting module comprises a plurality of light sources and a collector comprising a reflective surface. The collector is positioned in alignment with the light sources in order to collect the light beam produced by the light sources and to send it to an optical system which is itself adapted to project the light beam onto the road. Thanks to the invention, it is possible to create lighting functions requiring a light beam with an upper cut-off without using a shield. Thus, it is possible to reduce the size of the collector of each module and the size of the optical projection system, in particular the vertical size of these modules, so that the lighting modules can be stacked in order, for example, to meet aesthetic requirements, while making the device more compact.

[0010] Other advantageous features of the invention are listed below. Each of these features can be considered alone or in combination with the salient feature defined below. Each of these features contributes appropriately to solving the particular technical problems defined previously in the description, the salient feature defined above not necessarily contributing to solving these problems.

[0011] Advantageously, the collector of each of the first, second and third lighting modules comprises a plurality of sectors, each sector being configured to collect and reflect the light rays emitted by at least one of the light sources of said module with which it is associated, said part of the optical system of the module being configured to form an image of each sector. It will be understood that each sector itself defines a part of the light beam emitted by one of the modules.

[0012] Advantageously, the plurality of sectors of each collector are positioned transversely with respect to each other. The sectors can have a truncated parabolic profile. In one example, in at least one module, or even in each module, a single light source is associated with each sector of each collector, that is to say that the lighting module comprises as many light sources as sectors in the collector. Where appropriate, the light sources extend transversely with respect to the optical axis of the optical projection system. For example, two adjacent sectors can have a common transverse edge in the same collector.

[0013] Advantageously, each sector of the collector of each of the first, second and third lighting modules has a rear edge and said portion of the optical system of the module has a focal line located in the vicinity of the rear edge of said sector of the collector of the module, so that the image of each sector formed by the portion has an upper cut-off formed by the rear edge of the sector. In particular, the focal line located in the vicinity of the rear edge of a sector means a focal line located at a distance of less than 10 mm from said rear edge.

[0014] Each sector of the collector of the first lighting module has a rear edge, a front edge and two lateral edges, and wherein said first portion of the optical system has a focal line located in the vicinity of the rear edge of said sector, so that the image of each sector formed by the first portion has an upper cut-off formed by the rear edge of the sector and two lateral cut-offs formed by at least a portion of one of the lateral edges of the sector.

[0015] Advantageously, the first lighting module comprises a first sub-module comprising the plurality of light sources, the collector and said portion, and two other sub-modules arranged on each side of the first sub-module of the first module, each of these sub-modules comprising: a light source; a collector comprising a reflective surface configured to collect and reflect light rays emitted by the light source as a light beam; a portion of the optical projection system configured to project said light beam, said portion being configured to form an image of the reflective surface of the collector, and said portions of the optical projection system of these other sub-modules being arranged one on each side of said portion of the optical projection system of the first sub-module of the first module.

[0016] According to one exemplary embodiment of the application, the collector of the first sub-module comprises five sectors, and the collectors of the other sub-modules, positioned one on each side of the first sub-module, each comprise a single sector. Advantageously, the sub-modules of the first lighting module are configured to each emit a sub-beam having substantially flat cut-offs, these cut-offs being substantially aligned.

[0017] Advantageously, the collector of each sub-module of the first module forms a first single part forming a cover of the housing of the lighting device.

[0018] Advantageously, the device comprises a first heat sink separating the first module and the second module, wherein the light sources of each of the sub-modules of the first lighting module are mounted on a common first support, said first support being a mounting plate of the first heat sink.

[0019] Advantageously, the first heat sink has heat dissipation fins, for example, arranged at one end of the mounting plate of the first heat sink, and the first single component comprises a recess in which the fins of the first heat sink are arranged. The light source generates heat which is conducted through the mounting plate to the fins, so that this heat can be dissipated.

[0020] Advantageously, the common support comprises a plurality of blocking members, each blocking member being arranged in alignment with one of the light sources of each sub-module of the first module. The blocking members can for example be shields to prevent direct light from the light sources from passing through the optical system and to prevent the production of a light spot. For example, the blocking members can take the form of triangular prisms.

[0021] In one embodiment of the application, the second illumination module comprises a first diffusing screen interposed between said portion of the optical projection system of the second illumination module and the collector of the second illumination module.

[0022] The first diffusing screen can have a front surface facing the first portion of the optical projection system and a rear surface facing the collector of the second illumination module. This rear surface faces the collector of the second illumination module and it is this face that receives the light beam delivered by said collector of the second illumination module. The front surface of the first screen faces said optical system, that is to say, it is this face that projects the image of the collector onto the optical projection system. The front and rear surfaces of the first screen have a succession of concave and convex features, respectively. Each of these front and rear surfaces is provided with a plurality of toroidal shapes. The first screen is capable of producing a light beam in the form of an inverted "T". The inverted "T" shape can be formed by the horizontal scattering of the light beam by the diffusing screen.

[0023] The first diffusing screen can extend between the upper portion of said collector and said portion of the optical system, the focal line of said optical system being located near the rear edge of said sector of the collector. Where appropriate, the first diffusing screen can be configured to intercept and deflect only the light rays emitted by each first light source and reflected by the upper portion of the sector of the collector of the second illumination module associated with this first light source.

[0024] For example, the upper edge of the first screen protrudes from the rest of the screen towards the collector of the second illumination module, the first screen being configured so that this upper edge is contiguous with the upper edge of the collector of the second illumination module. This edge can have a sinusoidal shape similar to that of the front and rear surfaces of the diffusing screen and can coincide with the front upper edge of the collector of the second illumination module.

[0025] Advantageously, the device comprises a support mounting plate on which the first screen and the collector of the second illumination module are mounted.

[0026] If necessary, the support mounting plate has an orifice which cooperates with a pin of the screen.

[0027] Advantageously, the second illumination module comprises a first sub-module and at least a second sub-module, the first sub-module comprising the plurality of light sources, the collector, the first screen and the portion of the optical projection system, the sub-module comprising: the plurality of light sources; the collector comprising a reflective surface configured to collect and reflect light rays emitted by the light sources as a light beam; the portion of the optical projection system projected as projecting said light beam; said portion being configured to form an image of the reflective surface of the collector; and a second diffusing screen interposed between said portion of the optical projection system of the second sub-module and the collector of the second sub-module, and said portion of the second sub-module being arranged adjacent to the portion of the first sub-module of the second module.

[0028] The collector of the first sub-module of the second module can comprise twelve sectors, and the collector of the second sub-module of the second module can comprise twelve sectors. For example, the first screen and the second screen extend over the entire length of the collector of the first sub-module of the second module and over the entire length of the collector of the second sub-module of the second module. For example, the first screen and the second screen form a single piece called second module screen.

[0029] Advantageously, the two sub-modules are adjacent along the same horizontal line. Where appropriate, the collector of the first sub-module of the second module and the collector of the second sub-module of the second module can in particular be positioned continuously with each other. The front face and the rear face of the screen of the second module can have a sinusoidal profile. In particular, the front face has a concave feature at the collector of the first sub-module of the second module and at the collector of the second sub-module of the second module, and a convex feature at the junction between the collector of the first sub-module of the second module and the collector of the second sub-module of the second module, that is to say where the first screen and the second screen intersect.

[0030] Advantageously, the second illumination module comprises a partition wall arranged between the two sub-modules, said partition wall extending below the mounting plate of the first heat sink. The partition wall can be positioned parallel to the optical axis of the optical projection system. Alternatively or additionally, each sub-module of the second illumination module comprises a membrane positioned between the screen and the optical projection system of the second module. For example, the membrane of the first sub-module of the second module and the membrane of the second sub-module of the second module form the same single piece called second module membrane. Said second module membrane is positioned perpendicular to the optical axis of the optical projection system. In one example, the first heat sink comprises the partition wall and the second module membrane, forming a single piece. The partition wall and the second module membrane are located on a face of the first heat sink opposite the face comprising the plurality of light sources.

[0031] Advantageously, the first sub-module is configured in such a way that the image of the sector of its collector formed by the first part of the optical projection system is superimposed and / or interlaced with the image of the sector of the second collector of the second sub-module formed by the second part of the optical projection system.

[0032] Advantageously, the device comprises a second heat sink separating the second module and the third module, wherein the light sources of the second lighting module are mounted on a common second support which is a mounting plate of the second heat sink.

[0033] The second heat sink can comprise a mounting plate on which the light sources of the second lighting module are positioned; and comprise fins continuous with the mounting plate.

[0034] Advantageously, the collectors of each sub-module of the second module form a second single piece, and the screens of each sub-module of the second module form a single piece.

[0035] In appropriate cases, the second single piece can comprise at least one lateral fixing flange arranged at one end of the collectors of the second module, in particular of each of the lighting sub-modules of the second lighting module, and wherein the first screen comprises at least one lateral fixing member able to cooperate with the lateral fixing flange of the collectors of the second lighting module. The lateral fixing flange of the collectors of the second module is for example a groove. The lateral fixing member of the first screen is for example a pin or a peg. The pin or the peg of the screen is inserted into the groove of the collector to fix the first screen in place in front of the collectors of the lighting module.

[0036] In appropriate cases, the first screen and the second screen are positioned between the second single piece comprising the collectors of the first sub-module of the second module and the collectors of the second sub-module of the second module and the optical projection system. Thus, one of the screens of the second module can receive the light beams reflected by the collectors, and the other of the screens of the second module is able to project said light beams onto the optical projection system.

[0037] Advantageously, the third lighting module comprises a first sub-module and at least one other sub-module, the first sub-module comprising a plurality of light sources, a collector and said portion, characterized in that it comprises: a plurality of light sources; a collector comprising a reflective surface configured to collect the light rays emitted by said light sources and reflect them as a light beam; a portion of the optical projection system configured to project said light beam, said portion being configured to form an image of the reflective surface of the collector, and said portions of these other sub-modules are arranged adjacent to said portion of the first sub-module of the third module.

[0038] For example, the third illumination module may include a first submodule, a second submodule, and a third submodule, wherein the light collector of the first submodule of the third module includes six sectors, the light collector of the second submodule of the third module includes six sectors, and the light collector of the third submodule of the third module includes eight sectors. If necessary, the third illumination module includes multiple partition walls, each partition wall being arranged between two adjacent submodules of the third module, the partition walls extending below the mounting plate of the second heat sink. The partition walls may be positioned parallel to the optical axis of the optical projection system. Preferably, the second heat sink includes multiple partition walls.

[0039] Advantageously, the light source of the second lighting module is mounted on the first surface of the common second support, and the light source of the third lighting module is mounted on the second surface of the common second support opposite to the first surface.

[0040] For example, multiple partition walls of the third module are located on the surface of the second heat sink that includes multiple light sources of the third module, and are located on the surface opposite to the surface that includes multiple light sources of the second module.

[0041] Advantageously, the light collector of each sub-module of the third module forms a third single component, which forms the frame of the housing of the lighting device. This single component is referred to as the light collector of the third module or the third module light collector.

[0042] Advantageously, the second radiator includes heat dissipation fins, and in the second individual component includes an opening and a fixing member, the opening leading to the fins of the second radiator, the fixing member being arranged to align with the opening and for cooperation with a fan.

[0043] The second individual component includes an angled opening leading to the fins of the second heat sink. The angled opening directs airflow to the fins, thereby improving heat dissipation. The fins collect heat emitted from the light source by the mounting plate, allowing that heat to dissipate.

[0044] Advantageously, one or more cavities of the light collector of the first module are oriented in opposite directions to one or more cavities of the light collector of the third module, and one or more cavities of the light collector of the first module are oriented in the same direction as one or more cavities of the second or third module.

[0045] Advantageously, the device includes a first fixing member and a second fixing member, the first fixing member being configured to hold a second individual component and a third individual component together, and the second fixing member being configured to hold the third individual component and the first individual component together.

[0046] For example, the fixing member of the second individual component is a cap, and the fixing member of the third individual component is a pin. The pin and the cap cooperate with each other to hold the second and third individual components together.

[0047] Advantageously, the device comprises a third fixing member positioned on the first single part and the third single part and cooperating with a complementary fixing member belonging to the optical projection system.

[0048] For example, the third fixing member is a slot and a notch cooperating with each other so as to retain the optical projection system on the housing of the device.

[0049] Advantageously, each light source of the second lighting module and / or each light source of the third lighting module can be selectively activated, the device comprising a control unit configured to selectively control each of these selectively activatable light sources.

[0050] Preferably, each light source is made of a plurality of light-emitting diodes, each light source can be selectively activated. In this example, the control unit selects the light sources to be activated, for example on the basis of instructions received from a computer processor housed in the motor vehicle on which the lighting module is installed. BRIEF DESCRIPTION OF DRAWINGS

[0051] Other advantages and features of the invention will now be described on the basis of purely illustrative examples, which in no way limit the scope of the invention, with the various figures showing:

[0052] [ Figure 1 ] a front perspective view of a lighting device according to one embodiment of the invention;

[0053] [ Figure 2 ] another front perspective view of the lighting device of [ Figure 1 ] in which the optical projection system is omitted;

[0054] [ Figure 3 ] a top perspective view of the first lighting module of the lighting device of [ Figure 1 ];

[0055] [ Figure 4 ] a top perspective view of the second lighting module of the lighting device of [ Figure 1 ];

[0056] [ Figure 5 ] a top perspective view of the third lighting module of the lighting device of [ Figure 1 ];

[0057] [ Figure 6 ] a cross-sectional view of the lighting device of [ Figure 1 ];

[0058] [ Figure 7a rear perspective view of a second lighting module of the lighting device of Figure 1

[0059] [ Figure 8 an example of a light beam emitted by a first lighting module of the lighting device of Figure 1

[0060] [ Figure 9 an example of a light beam emitted by a second lighting module of the lighting device of Figure 1

[0061] [ Figure 10 an example of a light beam emitted by a third lighting module of the lighting device of Figure 1

[0062] Throughout the following description, elements that are identical in structure or function and that appear in the various figures are denoted by the same reference signs, unless otherwise indicated. DETAILED DESCRIPTION

[0063] [ Figure 1 a motor vehicle lighting device 30 according to one embodiment of the application is shown. This lighting device 30 will be described in connection with Figure 2 , [ Figure 3 ], [ Figure 4 ], [ Figure 5 ], [ Figure 6 ] and [ Figure 7 ], each of these figures showing a view of a portion of this lighting device 30, and in connection with Figure 8 , [ Figure 9 ] and [ Figure 10 ], each of these figures showing an example of a light beam that can be emitted by this lighting device 30.

[0064] The lighting device 30 comprises three lighting modules 31, 32, 33 and has an optical projection lens 34 on its front face. The lens 34 is formed as a single component common to the plurality of lighting modules 31, 32, 33, thereby allowing light beams emitted by the plurality of light sources to be projected onto the road.

[0065] As [ Figure 2 ​​​​As illustrated, the first lighting module 31 is positioned above the second lighting module 32, which itself is positioned above the third lighting module 33. The first lighting module 31 comprises a first sub-module 31.1, referred to as a central sub-module, and a second sub-module 31.2 and a third sub-module 31.3, referred to as lateral sub-modules, which are horizontally aligned so as to be adjacent to each other. The second lighting module 32 comprises a first sub-module 32.1 and a second sub-module 32.2 which are horizontally aligned so as to be adjacent to each other. The third lighting module 33 comprises a first sub-module 33.1, referred to as a central sub-module, and a second sub-module 33.2 and a third sub-module 33.3, referred to as lateral sub-modules, which are horizontally aligned so as to be adjacent to each other. In each of the lighting modules 31, 32, 33, two adjacent sub-modules comprise a common lateral edge.

[0066] Each of the lighting sub-modules 31.1, 31.2 and 31.3 comprises at least one light source (not shown in the figures), a collector 31.11, 31.21 and 31.31 comprising a reflective surface configured to collect and reflect the light rays emitted by said at least one light source as a light beam.

[0067] As illustrated in Fig. 1, Figure 3 The collector 31.11 is divided into five sectors, the lighting sub-module 31.1 comprising five light sources, each associated with one of these sectors. In the collector 31.11, two adjacent sectors have a common lateral edge. In the example described, the sectors of the collector 31.11 are positioned laterally with respect to each other. The sectors have a truncated parabolic profile, each sector defining a cavity in which a light source is arranged.

[0068] The collectors 31.21 and 31.31 each comprise a single sector, and the sub-modules 31.2 and 31.3 each comprise a single light source (not shown) associated with the respective collector 31.21, 31.31.

[0069] Each sector of the collectors 31.11, 31.21 and 31.31 is positioned in such a way that it collects the light beam emitted by the light source and reflects it towards the optical system 34. More specifically, each collector 31.11, 31.21 and 31.31 of the lighting sub-modules 31.1, 31.2 and 31.3 reflects the light beam to a portion of the optical system 34, respectively 31.12, 31.22 and 31.32, and is considered to form part of said lighting sub-module 31.1, 31.2 and 31.3. The lens portion 31.12, 31.22 and 31.32 has a focal line f11, f12 and f13, respectively, passing through the rear edge of the collector 31.11, 31.21 and 31.31, such that the lens portion projects an image of the collector onto the road.

[0070] In the described example, the first central sub-module 31.1 is thus configured to form a light beam having a substantially flat upper cut-off, as illustrated in Figure 8 ]. Each of the second and third lateral sub-modules 31.2 and 31.3 is configured to form a light beam which also has a substantially flat upper cut-off and which has a horizontal range and a maximum light intensity which are less than the horizontal range and the maximum light intensity of the light beam which can be emitted by the first central sub-module 31.1. These two light beams are used, for example, to complement the light beam which can be emitted by the first central sub-module 31.1 to produce the functions of a motorway driving light beam or a long-range light beam type.

[0071] The collector 31.11 is positioned between the collectors 31.21 and 31.31. The collectors 31.11, 31.21 and 31.31 are formed from the same first part 311 which forms the cover of the lighting device 30, as illustrated in Figure 1 ].

[0072] The first lighting module 31 comprises a first heat sink 312. The first heat sink 312 comprises a mounting plate 312.1 which acts as a common support for the plurality of light sources of the first lighting module 31 and comprises a plurality of heat dissipation fins 312.2. The first heat sink 312 comprises on its upper face pins 312.3 which are intended to abut in recesses 311.1 of the cover 311 so that the collectors 31.11, 31.21 and 31.31 can be indexed relative to the light sources.

[0073] The mounting plate 312.1 comprises a plurality of blocking members 312.4 each in the form of a triangular prism arranged in alignment with each light source of the first module 31. The blocking members 312.4 are preferably shields to prevent direct light from the light sources, known as stray light, from passing through the optical system 34.

[0074] The rear portion of the cover 311 opposite the area to which the optical system 34 is to be fixed comprises a recess, as illustrated in Figure 3 ], in which the fins 312.2 of the first heat sink 312 are arranged.

[0075] Each of the lighting sub-modules 32.1 and 32.2 comprises at least one light source (not shown in the figures), a collector 32.11 and 32.21 comprising a reflective surface configured to collect and reflect the light rays emitted by said at least one light source as a light beam, and a first and a second diffusing screen 321.1 and 321.2 interposed between said collector 32.11 and 32.21 and the optical projection system 34, respectively.

[0076] Collectors 32.11 and 32.21 are divided into twelve sectors. Illumination sub-modules 32.1, 32.2 comprise twelve light sources (not shown), each of which is associated with one of these sectors. In collectors 32.11 and 32.21, two adjacent sectors have a common lateral edge. In the example described, the sectors of collectors 32.11 and 32.21 are positioned laterally with respect to each other. The sectors have a truncated parabolic profile, each sector defining a cavity in which a light source is arranged. Each sector of collectors 32.11 and 32.21 is positioned in such a way that it collects the light beams emitted by the plurality of light sources and reflects them towards optical system 34. More specifically, each collector 32.11 and 32.21 of illumination sub-modules 32.1 and 32.2 reflects the light beams towards a portion of optical system 34, respectively 32.12 and 32.22, and is considered to form part of said illumination sub-module 32.1 and 32.2. This lens portion 32.12 and 32.22 has a focal line f21 and f22, respectively, passing through the rear edge of collectors 32.11 and 32.21, so that this lens portion projects the image of these collectors onto the road.

[0077] Collectors 32.11 and 32.21 are contiguous with each other and form a second single piece 323, as shown in Figure 4 ].

[0078] The first diffusing screen 321.1 and the second diffusing screen 321.2 are respectively positioned in alignment with the collectors 32.11 and 32.21. The first screen 321.1 and the second screen 321.2 form a single component called screen 321. The first screen 321.1 and the second screen 321.2 have a front face 321.3 facing the first and second portions of the optical projection system 34, and a back face 321.4 facing the collectors 32.11 and 32.21. Since the back face 321.4 of the screen 321 faces the collectors 32.11 and 32.21, it is this face 321.4 that receives the light beams passing through said collectors 32.11, 32.21. The front face 321.3 of the screen 321 faces said optical system 34, that is to say, it is this face 321.3 that projects the images of the collectors 32.11 and 32.21 onto the optical projection system 34. The front face 321.3 and the back face 321.4 each have a succession of concave and convex features. The front face 321.3 and the back face 321.4 are each provided with a plurality of toroidal shapes. The screen 321 has an upper edge 321.5 projecting from the rest of said screen 321 towards the collectors 32.11 and 32.21, the screen 321 being configured so that said upper edge 321.5 abuts the upper edge of the collectors 32.11, 32.21. The edge 321.5 has a sinusoidal shape similar to that of the front face 321.3 and the back face 321.4, and coincides with the upper front edge of each collector 32.11 and 32.21.

[0079] The second single component 323 comprises at least one transverse fixing flange 323.1 arranged at one end of its reflective surface, and the screen 321 comprises at least one transverse fixing member 321.6 configured to cooperate with said transverse fixing flange 323.1 of the second single component 323. The transverse fixing flange 323.1 is a slot. The transverse fixing member 321.6 is a pin or peg. The pin or peg 321.6 is inserted into the slot 323.1 to hold the screen 321 in place in front of the collectors 32.11 and 32.21.

[0080] In the example described, the first and second sub-modules 32.1 and 32.2 are thus configured to form a plurality of illumination segments, each substantially having a horizontal expansion of an inverted "T" shape. The screen 321 allows the horizontal diffusion of each illumination segment formed by the image of each sector and of its lower part, so as to obtain illumination segments having this particular inverted "T" shape. When all the light sources of one of these sub-modules 32.1 and 32.2 are activated, the diffuse lower parts of these illumination segments formed by this sub-module are superimposed to form a segmented light beam, as Figure 9 illustrated.

[0081] The first sub-module 32.1 is configured in such a way that the images of the sectors of the first collector 32.11 formed by the first part of the optical projection system 32.12 are superimposed on the images of the sectors of the second collector 32.21 of the second sub-module 32.2 formed by the second part 32.22 of the optical projection system 34. For example, each image formed by the second sub-module 32.2 is superimposed with at least one of the images formed by the first sub-module 32.1, the set of images thus together forming a uniform light beam.

[0082] The second lighting module 32 comprises a second heat sink 322. Said second heat sink 322 comprises a mounting plate 322.1 which acts as a common support for the plurality of light sources of the second lighting module 32 and comprises a plurality of heat dissipation fins 322.2. The second heat sink 322 comprises on its upper surface pins 322.4 for abutment in grooves 323.2 of a second single part 323, enabling the collectors 32.11 and 32.21 to be indexed with respect to the light sources.

[0083] The lower surface of the second heat sink 322, opposite the surface comprising the plurality of light sources, comprises a plurality of partition walls 322.3 forming lateral edges common to two adjacent sub-modules of the third lighting module 33.

[0084] The second single part 323 comprises an oblique opening 323.3 opening onto the fins 322.2 of the second heat sink 322, as shown in [ Figure 4 ] The second single part 323 comprises a fixing member 323.5 arranged in alignment with said opening 323.3 and for cooperating with a fan (not shown). The oblique opening enables the air flow to be directed towards the fan, thereby improving the dissipation of heat. The opening 323.3 allows the dissipation of heat generated by the light sources of the second module 32.

[0085] The lower surface of the first heat sink 312, opposite the surface comprising the plurality of light sources of the first module 31, comprises a diaphragm 312.5 positioned perpendicular to the optical axis of the optical projection system 34 and comprises a partition wall 312.6 separating the first and second sub-modules of the second lighting module 32, as shown in [ Figure 1 ] and [ Figure 3 ]. The first heat sink 312, the partition wall 322.3 and the diaphragm 312.5 form a single part.

[0086] Each of the lighting sub-modules 33.1, 33.2 and 33.3 of the third module 33 comprises at least one light source (not shown in the figures), the collectors 33.11, 33.21 and 33.31 comprising respectively a reflective surface configured to collect the light rays emitted by said at least one light source and to reflect them as a light beam.

[0087] like[ Figure 5 As shown, the central light collector 33.11 is divided into six sectors, and the illumination submodule 33.1 includes six light sources, each associated with one of these sectors. In the light collector 33.11, two adjacent sectors share a common lateral edge. In the described example, the multiple sectors of the light collector 33.11 are laterally positioned relative to each other. The sectors have a truncated parabolic profile, and each sector defines a cavity in which the light source is arranged.

[0088] Light collectors 33.21 and 33.31 each include six and eight sectors, respectively, and submodules 33.2 and 33.3 each include six and eight light sources (not shown) associated with the respective light collectors 33.21 and 33.31.

[0089] Each sector of the light collectors 33.11, 33.21, and 33.31 is positioned in such a way that it collects the light beam emitted by the light source and reflects it toward the optical system 34. More specifically, each light collector 33.11, 33.21, and 33.31 of the illumination submodules 33.1, 33.2, and 33.3 reflects this light beam to a portion of the optical system 34, which are 33.12, 33.22, and 33.32, respectively, and are considered to form a part of the illumination submodules 33.1, 33.2, and 33.3. The lens portions 33.12, 33.22, and 33.32 have focal lines f31, f32, and f33 passing through the rear edges of the light collectors 33.11, 33.21, and 33.31, respectively, such that the lens portions project the image of the light collector onto the road.

[0090] In the described example, each of the first submodule 33.1, the second submodule 33.2, and the third submodule 33.3 is therefore configured to form a segmented beam, each segment of which can be selectively controlled, such as [ Figure 10 As shown in the image.

[0091] Concentrator 33.11 is positioned between concentrators 33.21 and 33.31. Concentrators 33.11, 33.21, and 33.31 are formed by the same third component 330, which forms the frame of the lighting device 30, as shown in […]. Figure 1 ]and[ Figure 5 As shown in the image.

[0092] In the third module 33, two adjacent sub-modules share a common lateral edge 322.3, which forms a single component with the second heat sink 323, as shown in […]. Figure 5 As shown in the image.

[0093] One or more cavities of the light collectors 31.11, 31.21 and 31.31 are oriented in the opposite direction as the cavities of the light collectors 33.11, 33.21 and 33.31, and one or more cavities of the light collectors 31.11, 31.21 and 31.31 are oriented in the same direction as the cavities of the light collectors 32.11 and 32.21.

[0094] The light sources of the second lighting module 32 are mounted on a first face of a common second support 322.1, and the light sources of the third lighting module 33 are mounted on a second face of the common second support 322.1 opposite the first face.

[0095] The second single part 323 comprises two recesses 323.2 in which the pins 330.1 of the frame 330 are caught in order to hold said second single part 323 and said frame 330 together.

[0096] The cover 311 and the frame 330 each comprise a second fixing member 311.2, 330.1 which is respectively a cap 311.2 and a pin 330.1 as illustrated in Figure 2 ] which cooperate with each other to hold said cover 311 and said frame 330 together. The second single part 323 and the frame 330 each comprise a first fixing member 323.4, 330.1 which is respectively a cap 323.4 and a pin 330.1 as illustrated in Figure 2 ] which cooperate with each other to hold said second single part 323 and said frame 330 together.

[0097] The front of the cover 311 comprises a slot 3111 for fixing the optical system 34. The frame 330 comprises a slot 330.2 able to cooperate with a notch 340 of the optical system 34. The lens comprises at least one notch 340 which cooperates at least with the slot 3111 of the housing.

[0098] The device thus comprises a first lighting module 31 configured to emit a first light beam having a flat cut-off, a second lighting module 32 configured to emit a second light beam extending at least partially above the first light beam, and a third lighting module 33 configured to emit a segmented light beam, each segment of the segmented light beam being selectively controllable, the third light beam extending at least partially above the second light beam.

[0099] The above description clearly explains how the invention achieves its stated aim by proposing a motor vehicle lighting device comprising a plurality of lighting modules and a diffusing screen, i.e. a device comprising several lighting modules which are expected to be superimposed in a compact device, for example for aesthetic reasons.

[0100] In any event, the application is not to be limited to the embodiments specifically described herein, but rather only by any equivalents within the scope of the appended claims and their technical equivalents.

Claims

1. Motor vehicle lighting device (30), said device (30) comprising a housing in which are arranged at least: a. a first lighting module (31) designed to emit a first light beam with a flat cut-off, b. a second lighting module (32) designed to emit a second light beam extending at least partially above the first light beam; c. a third lighting module (33) designed to emit a segmented light beam, each sector of which can be selectively controlled, the third light beam extending at least partially above the second light beam; d. an optical projection system (34) common to the first lighting module (31), the second lighting module (32) and the third lighting module (33), said second lighting module (32) being arranged below the first lighting module (31) in the housing, said third lighting module (33) being arranged below the second lighting module (32) in the housing, characterized in that each of the first lighting module (31), the second lighting module (32) and the third lighting module (33) comprises: e. a plurality of light sources, f. a light collector (32.11, 32.21) comprising a reflective surface configured to collect and reflect light rays emitted by the plurality of light sources as a light beam; g. a portion (31.12, 31.22, 31.32, 32.12, 32.22, 33.12, 33.22, 33.32) of the optical projection system (34) configured to project the light beam; said portion being configured to form an image of the reflective surface of the light collector (32.11, 32.21); wherein the lighting device (30) comprises a first heat sink (312) separating the first lighting module (31) and the second lighting module (32), and the light sources of the first lighting module (31) are mounted on a common first support (312.1) which is a mounting plate of the first heat sink (312); wherein the lighting device (30) comprises a second heat sink (322) separating the second lighting module (32) and the third lighting module (33), wherein the light sources of the second lighting module (32) are mounted on a common second support (322.1) which is a mounting plate of the second heat sink.

2. Motor vehicle lighting device (30) according to claim 1, wherein The light collector (31.11, 31.21, 31.31, 32.11, 32.21, 33.11, 33.21, 33.31) of each of said first (31), second (32) and third (33) lighting modules comprises a plurality of sectors, each sector being configured to collect and reflect light rays emitted by at least one of the light sources of the module (31, 32, 33) with which it is associated, said portion (31.12, 31.22, 31.32, 32.12, 32.22, 33.12, 33.22, 33.32) of the optical system (34) of the module being configured to form an image of each sector.

3. Motor vehicle lighting device (30) according to claim 2, wherein Each sector of the light collector (31.11, 31.21, 31.31, 32.11, 32.21, 33.11, 33.21, 33.31) of each of said first (31), second (32) and third (33) lighting modules has a rear edge, and wherein said portion (31.12, 31.22, 31.32, 32.12, 32.22, 33.12, 33.22, 33.32) of the optical system (34) of the module has a focal line located near said rear edge of said sector of the light collector (31.11, 31.21, 31.31, 32.11, 32.21, 33.11, 33.21, 33.31) of the module, so that the image of each sector formed by the portion has an upper cut-off formed by the rear edge of the sector.

4. The motor vehicle lighting device (30) according to any one of claims 1-3, wherein, The first lighting module (31) comprises a first sub-module (31.1) comprising said plurality of light sources, said light collector (31.11) and said portion (31.12, 31.22, 31.32), and two other sub-modules (31.2, 31.3) arranged one on each side of the first sub-module (31.1) of the first lighting module (31), characterized in that each of these sub-modules (31.1, 31.2, 31.3) comprises: a light source; a light collector (31.11, 31.21, 31.31) comprising a reflective surface configured to collect and reflect light rays emitted by the light source as a light beam; a portion (31.12, 31.22, 31.32) of the optical projection system (34) configured to project the light beam, said portion (31.12, 31.22, 31.32) being configured to form an image of the reflective surface of the light collector (31.11, 31.21, 31.31); the portions (31.22, 31.32) of the optical projection system (34) of these other sub-modules being arranged one on each side of the portion (31.12) of the optical projection system of the first sub-module (31.1) of the first lighting module (31).

5. Motor vehicle lighting device (30) according to claim 4, wherein The light collectors (31.11, 31.21, 31.31) of each sub-module of the first lighting module (31) form a first single component (311), which forms a cover for the housing of the lighting device (30).

6. The motor vehicle lighting device (30) according to claim 4, wherein, The light source of each of the sub-modules (31.1, 31.2, 31.3) of the first lighting module (31) is mounted on the common first support (312.1).

7. The motor vehicle lighting device (30) according to any one of claims 1-3, wherein, The second lighting module (32) includes a first diffuse screen (321.1) which is inserted between the portion (32.12, 32.22) of the optical projection system (34) of the second lighting module (32) and the light collector (32.11, 32.21) of the second lighting module (32).

8. The motor vehicle lighting device (30) according to claim 7, wherein, The second lighting module (32) includes a first submodule (32.1) and at least a second submodule (32.2). The first submodule includes the plurality of light sources, the light collector (32.11), the first diffuse screen (321.1), and the portion (32.12). The submodule (32.2) is characterized in that it includes: a plurality of light sources; a light collector (32.21) including a reflective surface configured to collect light emitted by the light sources and reflect it as a beam; and a portion (32.12) of an optical projection system (34) configured to project the beam. 2.22), the portion (32.22) is configured to form an image of the reflective surface of the light collector (32.21); and a second diffuse screen (321.2) inserted between the portion (32.22) of the optical projection system (34) of the second submodule (32.2) and the light collector (32.21) of the second submodule (32.2), the portion (32.22) of the second submodule (32.2) being arranged adjacent to the portion (32.12) of the first submodule (32.1) of the second illumination module (32).

9. Motor vehicle lighting device (30) according to claim 8, wherein The light collectors (32.11, 32.21) of each sub-module (31.1, 32.2) of the second lighting module (32) form a second single component (323), and the screens (321.1, 321.2) of each sub-module (31.1, 32.2) of the second lighting module (32) form a single component.

10. Motor vehicle lighting device (30) according to claim 9, wherein The third lighting module (33) includes a first submodule (33.1) and at least another submodule (33.2, 33.3). The first submodule includes the plurality of light sources, the light collector (33.11), and the portion (33.12). The submodule (33.2, 33.3) is characterized in that it includes: a plurality of light sources; and a light collector (33.21, 33.31) comprising a reflective surface configured to collect light emitted by the light sources and reflect it as a light beam. The portion (33.22, 33.32) of the optical projection system (34) is configured to project the light beam; the portion (33.22, 33.32) is configured to form an image of the reflective surface of the light collector (33.21, 33.31), and the portion (33.22, 33.32) of these additional sub-modules (33.2, 33.3) is arranged adjacent to the portion (33.12) of the first sub-module (33.1) of the third illumination module (33).

11. Motor vehicle lighting device (30) according to claim 10, wherein The light source of the second lighting module (32) is mounted on the first surface of the common second support (322.1), and the light source of the third lighting module (33) is mounted on the second surface of the common second support (322.1) opposite to the first surface.

12. Motor vehicle lighting device (30) according to claim 10 or 11, wherein The light collectors (33.11, 33.21, 33.31) of each sub-module (33.1, 33.2, 33.3) of the third lighting module (33) form a third single component (330), which forms the frame of the housing of the lighting device (30).

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