• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Lighting module (3) for a vehicle headlamp (2) (1), comprising: - a first zone (Z1) comprising at least one light source (22 ') and a matrix of micro-mirrors (24), - a second zone (Z2) comprising a first heat sink (26) of the heat generated by said light source (22 '), - a third zone comprising a second heat sink (27) of the heat generated by the micromirror matrix (24). at least one means for generating an air flow (31 ', 32') for generating an air flow in the first zone (Z1), in the second zone (Z2) and in the third zone (Z3), the first (Z1), second (Z2) and third zone (Z3) being distinct from one another, the first zone (Z1) being arranged vertically between the second zone (Z2) and the third zone (Z3) the first zone (Z1) comprising an air outlet (30).
    公开号:FR3079283A1
    申请号:FR1852522
    申请日:2018-03-23
    公开日:2019-09-27
    发明作者:Maxime Rousseau；Thomas Daniel
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    Lighting module fitted with an array of micro-mirrors with optimized cooling
    Technical field of the invention
    The present invention relates to a lighting module for a headlight of a motor vehicle, the lighting module comprising an array of micro-mirrors. The invention also relates to a headlight for a motor vehicle comprising such a lighting module. The invention also relates to a motor vehicle comprising such a headlight or such a lighting module.
    State of the art
    For the lighting of motor vehicles, the use of lighting modules comprising a light source and an array of micro-mirrors is known. An array of micro-mirrors is an electromechanical microsystem comprising a multitude of micro-mirrors which are all movable around the same axis and which can take at least two distinct orientations. According to its first orientation, a micro-mirror transmits a light ray out of the lighting module, in a lighting field. In its second orientation, the light ray is deflected out of the lighting field and is absorbed by a structure of the lighting module. The orientation of each micro-mirror can be controlled individually by the effect of an electrostatic force. The lighting module includes a control circuit connected to an electronic control unit. The electronic control unit emits a control current to each of the micro-mirrors to define their orientation.
    Such projectors make it possible to compose and project complex images in front of the vehicle. They are therefore used to perform various functions such as for example the projection of information useful for the safety of pedestrians located in the direct vicinity of the vehicle, or even for example a road lighting function preventing the glare of other motorists.
    During operation, such a lighting module can become very hot. Excessive heating can lead to a malfunction, even destruction, of the micro-mirror array or its control circuit. In order to cool the matrix of micro-mirrors, the use of heat sinks associated with fans is known. However, these cooling means are not efficient enough to keep the lighting module below a damage temperature.
    Subject of the invention
    The object of the invention is to provide a lighting module overcoming the above drawbacks and improving the lighting modules known from the prior art. In particular, the invention makes it possible to produce a lighting module which is compact, simple to implement and which limits heating of the light source, of the matrix of micro-mirrors and of their respective control circuits.
    The invention relates to a lighting module for a headlight of a motor vehicle comprising:
    a first zone comprising at least one light source and a matrix of micro-mirrors, a second zone comprising a first heat sink capable of dissipating the heat generated by the at least one light source, a third zone comprising a second heat sink capable of dissipate the heat generated by the matrix of micro-mirrors, at least one means of generating an air flow to generate an air flow in the first zone, in the second zone and in the third zone, the first zone , the second zone and the third zone being distinct from each other, the first zone being arranged vertically between the second zone and the third zone, the first zone comprising an air outlet.
    The air outlet of the first zone can be directed upwards by an upper face of the lighting module. As a variant, this air outlet can be oriented downwards, or on the sides, or at the rear of the lighting module.
    The air outlet may include at least one chimney passing through the second zone, in particular two chimneys passing through the second zone on either side of the first heat sink.
    At least one chimney can be oriented vertically and can be tilted towards the rear of the lighting module.
    The second zone can be arranged above the first zone. The third zone can be arranged below the first zone.
    The first zone can be delimited from the second zone at least partially by a first electronic card supporting the at least one light source and / or by a base of the first heat sink. The first zone can be delimited from the third zone at least partially by a second electronic card supporting the matrix of micro-mirrors and / or by a base of the second heat sink.
    The lighting module may include a projection optic capable of guiding light rays reflected by the matrix of micro-mirrors, the first zone and / or the second zone comprising an air outlet above the projection optic.
    The second zone and / or the third zone may include a forward air outlet.
    The first zone and / or the second zone and / or the third zone may include an air inlet from the rear.
    The means for generating an air flow can comprise at least one fan, in particular at least two fans.
    The lighting module may include a first fan capable of generating an air flow only in the first zone and in the third zone and a second fan capable of generating an air flow only in the second zone.
    The two fans can be arranged in parallel one above the other.
    The at least one light source may include at least one incandescent light emitting diode.
    The invention also relates to a projector comprising a lighting module as defined above.
    The invention also relates to a motor vehicle comprising a lighting module as defined above or a projector as defined above.
    Brief description of the drawings
    These objects, characteristics and advantages of the present invention will be described in detail in the following description of a particular embodiment made without limitation, in relation to the attached figures among which:
    - Figure 1 is a schematic view of a motor vehicle according to an embodiment of the invention;
    - Figure 2 is an isometric view from above of a lighting module according to an embodiment of the invention;
    - Figure 3 is an isometric front view of the lighting module according to the embodiment of the invention;
    - Figure 4 is a schematic sectional view of the profile of the lighting module according to the embodiment of the invention;
    - Figure 5 is an isometric sectional view of the lighting module according to the embodiment of the invention;
    - Figure 6 is an isometric view of the rear of the lighting module according to the embodiment of the invention;
    - Figure 7 is an isometric view of the lighting module without its protective housing according to the embodiment of the invention;
    - Figure 8 is an isometric view from above of a first heat sink according to the embodiment of the invention;
    - Figure 9 is an isometric view from below of a second heat sink according to the embodiment of the invention.
    Description of a preferred embodiment of the invention
    Throughout the figures and the description, the left and the right are defined according to the point of view of a driver of a vehicle. The X axis designates the longitudinal axis of the vehicle. In forward and straight, the vehicle advances from rear to front in a direction parallel to its longitudinal axis. The X axis is oriented from the front to the rear of the vehicle, that is to say in the reverse direction. The Y axis designates the transverse axis of the vehicle. The Y axis is oriented from left to right. The Z axis is the axis perpendicular to the X axis and the Y axis. The Z axis is a vertical axis when the vehicle is on level ground. The Z axis is oriented from bottom to top. The X, Y and Z axes form a direct orthonormal coordinate system. In all of the figures and the description, the vehicle is considered to rest on horizontal ground. On the other hand, for the sake of simplification of the description, this same reference, defined by reference to a vehicle, will also be used for a lighting module even considered outside of a vehicle, since it is intended for mounting according to a specific orientation on a vehicle.
    FIG. 1 illustrates a motor vehicle 1 provided with a headlight 2 according to an embodiment of the invention. The vehicle can be of any kind, for example it can be a private vehicle, a utility vehicle or a truck. The headlamp 2 is located at the front of the vehicle but could also be fitted to the rear of the vehicle. The projector is used to illuminate the road, to be seen by other motorists and / or to project images onto the ground providing information to the driver or his environment. The projector 2 includes a lighting module 3 according to an embodiment of the invention.
    Figures 2 and 3 illustrate the lighting module 3. The lighting module 3 comprises a housing 10 forming a protective envelope of generally parallelepiped shape. The lighting module 3 also includes various electrical connectors 4 making it possible to connect it electrically to an electronic control unit on board the vehicle. These connectors can be in any number and have any shape.
    The lighting module 3 comprises a forward-facing projection optic 21 through which light rays can be emitted. The housing 10 includes a first front opening 11 positioned above the projection optic 21, intended for the outlet of an air flow, in a substantially oriented direction parallel to the longitudinal axis. This first front opening has a generally rectangular shape with the long side of the rectangle parallel to the transverse axis. The housing 10 also includes a second front opening 12 positioned below the projection optic 21, likewise intended for the outlet of an air flow, in a substantially longitudinally oriented manner. This second front opening 12 is particularly visible in Figure 3: it is in fact made up of five windows positioned transversely next to each other. Finally, the housing also includes two upper openings 13 on the top of the housing 10, likewise intended for the outlet of an air flow. The shape of these different openings could be different provided that they allow the passage of air between the interior and the exterior of the housing 10, according to an operation which will be detailed later.
    With reference to FIGS. 4 and 5, the lighting module 3 comprises three zones Z1, Z2, Z3 distinct from each other. These three areas correspond to additional volumes of the lighting module.
    A first zone Z1 comprises on the one hand a light-emitting diode 22 connected to a first electronic card 23, and on the other hand an array of micro-mirrors 24 connected to a second electronic card 25. The two electronic cards 23, 25 can comprise pilots or electronic components making it possible to respectively control the lighting of the light-emitting diode 22 and the activation of the matrix of micro-mirrors 24. The first zone Z1 also includes the projection optics 21. It is therefore the seat of the production of light and its diffusion towards the outside of the projector.
    A second zone Z2 comprises a first heat sink 26 capable of dissipating the heat generated by the light-emitting diode. A third zone Z3 comprises a second heat sink 27 capable of dissipating the heat generated by the matrix of micro-mirrors 12. With reference to the vertical axis, the second zone Z2 is arranged above the first zone Z1 and the third zone Z3 is arranged below the first zone Z1. The first zone is therefore arranged vertically between the second zone Z2 and the third zone Z3.
    The first zone Z1 comprises an air outlet 30 oriented upwards, by an upper face of the lighting module, and coinciding with the upper openings 13 of the housing. The second zone Z2 includes an air outlet 34 facing the front of the lighting module and coinciding with the first front opening 11 of the housing. The third zone Z3 includes an air outlet 35 oriented towards the front of the lighting module and coinciding with the second front opening 12 of the housing. As mentioned above, these zones are distinct, and their respective air outlets are distinct.
    The first zone Z1 is delimited from the second zone Z2 according to a first plane in which the first electronic card 23 extends. This first plane is inclined forward and upward relative to a horizontal plane, as appears on FIGS. 4 and 5. The first zone Z1 is delimited from the third zone Z3 according to a second plane in which the second electronic card 25 extends. This second plane is substantially horizontal. Thus the first zone Z1 comprises a cross section of generally trapezoidal shape. The small base of the trapezoid is on the rear side of the light module and the large base of the trapezoid is on the front side.
    The light emitting diode 22 is a light source 22 ’. Alternatively, it could be replaced by any other form of light source such as an incandescent bulb. The lighting module could include any number of light emitting diodes or any other form of light source.
    The lighting module 3 comprises a collimating lens 28 and an optical prism 29, both positioned in the first zone Z1. The collimating lens 28 and the optical prism 29 are interposed between the light-emitting diode 22 and the micro-mirror array 24 so as to form a light beam and to guide this light beam towards the micro-mirror matrix 24 The projection optic 21 is positioned downstream of the array of micro-mirrors 24 and is composed of several lenses in series.
    The micro-mirror array 24 is an electromechanical micro-system comprising a multitude of flat micro-mirrors which are all movable independently around the same axis. Micro-mirrors can take two distinct orientations. The orientation of each micro-mirror can be controlled individually by the effect of an electrostatic force. The micro-mirror array has a rectangular shape and may include several hundred micro-mirrors across the width and several hundred micro-mirrors along the length. According to a first orientation, called active orientation, a micro-mirror reflects a light ray coming from the light-emitting diode towards the projection optics 21. According to a second orientation, called active orientation, a micro-mirror reflects a light ray coming from the light emitting diode elsewhere than towards the projection optics. The micro-mirror array receives a command defining which micro-mirrors are oriented in the first orientation and which micro-mirrors are oriented in the second orientation. Thus, each micro-mirror defines a pixel of an image: the matrix of micro-mirrors can thus be used not only to obtain standardized lighting but also to project complex images. The micro-mirror array is integrated into a larger chip. This chip is integrated into the second electronic card 25. To guarantee correct operation, the temperature of the chip and of the micro-mirror array must not exceed a threshold temperature.
    The first heat sink 26 and the second heat sink 27 are means for dissipating heat by thermal conduction. Each of the heat sinks is made, preferably in one piece, from a heat conducting material, such as aluminum or copper. It preferably has as large an air exchange area as possible.
    The first heat sink 26 is particularly visible in Figures 7 and 8. It includes a base 26A pressed against the first electronic card 23. The base 26A has a generally rectangular shape and has a larger surface than that of the first electronic card 23 The base 26A makes it possible, in addition to the first electronic card, to physically separate the first zone Z1 from the second zone Z2. The first heat sink 26 also includes a set of pins 26B generally extending vertically upwards. The pins 26B form a grid of rectangular outer shape, a first side extending parallel to the longitudinal axis X and a second side extending parallel to the transverse axis Y. This set of pins 26B is framed on the right and at left by two blanks 26C extending longitudinally and vertically.
    The second heat sink 27, particularly visible in FIG. 9, is in contact with the second electronic card 25. It comprises a base 27A extending parallel to the second electronic card 25. It also comprises a body 27D, of generally parallelepiped shape and extending upwards from an upper face of the base 27A. This body is pressed against the chip integrating the matrix of micro-mirrors 24 so as to conduct the heat produced by the matrix of micro-mirrors 24 throughout the second heat sink 27. The second heat sink 27 also comprises a set of pins 27B generally extend vertically downward from the base 27A. The pins 27B form a grid of rectangular external shape, a first side extending parallel to the longitudinal axis X and a second side extending parallel to the transverse axis Y. This set of pins 27B is framed on the right and at left by two blanks 27C extending longitudinally and vertically.
    The number of pins 26B, 27B can be any. As a variant, the pins could be replaced by fins, oriented parallel to the air flow intended to pass through the heat sink, that is to say parallel to the longitudinal axis X.
    Two chimneys 30A, 30B are arranged on either side of the first heat sink 26. These two chimneys allow the first zone Z1 to be placed in communication with the outside of the lighting module. The two chimneys therefore constitute the air outlets 30 from the first zone Z1. The two chimneys cross the second zone Z2 on either side of the first heat sink 26. They extend vertically and are substantially inclined towards the rear of the lighting module. In other words, the axis of the chimneys 30A, 30B forms a non-zero angle with the vertical axis. The two chimneys open on the one hand into the first zone at a high point of the first zone Z1, that is to say at the level of the plane of separation between the first zone and the second zone on the side of the large base of the trapezoid forming a cross section of the first zone Z1. On the other hand, the two chimneys 30A, 30B open opposite the two upper openings 13 of the housing 10. The chimneys have an ellipsoidal section but, as a variant, could have a section of any other shape. Alternatively, the number of these chimneys could also be different. The light module may have only one chimney or more than two chimneys. Advantageously, the two chimneys and the first heat sink form a single piece.
    With reference to FIG. 6, the lighting module 3 also comprises two fans 31, 32 arranged at the rear of the lighting module, and capable of generating an air flow in each of the three zones Z1, Z2 and Z3 . More particularly, a first fan 31 is arranged so as to generate an air flow only in the first zone Z1 and in the third zone Z3 and a second fan 32 is arranged so as to generate an air flow only in the second zone Z2. The first heat sink 26, associated with the light-emitting diode 22, therefore benefits from a dedicated fan which allows particularly efficient cooling of the light-emitting diode. The two fans 31, 32 are arranged vertically one above the other. Advantageously, the two fans can be identical or at least have a substantially identical external shape. They each include at least one rotary blade 31 A, 32A, and an electric motor capable of driving the blade in rotation. The lighting module includes an air inlet 33 at the rear of each fan through which fresh air can be drawn in to enter the lighting module. Alternatively, each fan could be replaced by any other means of generating a 3T, 32 ’air flow. In particular, the two fans could be replaced by a single more powerful fan.
    When the fans are operating, the air flow in each of the zones Z1, Z2 and Z3 is oriented substantially longitudinally from the rear to the front. The air flows through the three zones Z1, Z2, Z3 are independent. They do not mix. However, the three zones Z1, Z2, Z3 need not be perfectly airtight with respect to each other and air leaks between the zones may exist as long as they are minimal compared to the air flow passing through each of the zones.
    The air flow in the first zone Z1, represented in FIGS. 4 and 7 by a first arrow F1. The air flow in the first zone Z1 is generated by the first fan and is guided between the first electronic card and the second electronic card. It cools the light-emitting diode 22 and the micro-mirror array 24 by convection and then escapes upwards through the two chimneys 30A, 30B communicating with the two upper openings 13 of the housing. Note, even when the first fan does not work, hot air lighter than cold air will tend to leave the first zone through the two chimneys since they extend from the highest part of the first zone Z1. Hot air, lighter than cold air, will tend to exit naturally through the two chimneys to make way for cooler air entering through the air inlet 33 at the rear of the module. lighting. Thus, the architecture of the first zone Z1 is favorable to a natural minimum cooling of the first zone Z1. This phenomenon is added to the contribution of the first fan 31, so as to make optimal cooling.
    The air flow in the second zone Z2, represented in FIGS. 4 and 7 by a second arrow F2, passes through the first heat sink and leaves the projector through the first front opening 11 of the housing 10. The fresh air drawn in by the second fan passes through the first heat sink by sliding around the pins 26B. The air flow in the second zone is channeled laterally between the two blanks 26C, the base 26A and an upper side of the housing 10. A heat exchange occurs between the fresh air and the hotter heatsink. This heat exchange contributes to lowering the temperature of the first heat sink 26 and therefore of the first electronic card 23, as well as of the light-emitting diode 22.
    The air flow in the third zone Z3, represented in FIGS. 4 and 7 by a third arrow F3, passes through the second heat sink 27 and exits from the projector through the second front opening 12 of the housing 10. A first part of the air flow in the third zone Z3 circulates between the second electronic card 25 and the base 27A of the second heat sink 27. A second part of the air flow in the third zone Z3 passes through the second heat sink 27 by sliding around its pins 27B. This second part is channeled between the two lateral blanks 27C, the base 27A and a lower side of the housing 10. A heat exchange takes place between the fresh air and the warmer heat sink. This heat exchange contributes to lowering the temperature of the second heat sink 27 and therefore of the second electronic card 25 and of the matrix of micro-mirrors 24. The air flow comes out of the third zone Z3 passing through the second opening. front 12 of the housing.
    When the light emitting diode emits a light ray, this first of all crosses the collimating lens 28 then the optical prism 29 before reaching the matrix of micro-mirrors 24. If the light ray reaches a micro-mirror in active orientation, it is reflected towards the optical prism 29 from where it will be deflected towards the projection optics 21. It then crosses the various lenses forming the projection optics, and thus emerges from the projector towards the front to illuminate the road or the environment of the vehicle. Such a path is represented by a line R1 in dotted lines in FIG. 4. If the light ray reaches a micro-mirror in inactive orientation, this is deflected out of the projection optics 21 and does not participate in the lighting road or vehicle environment. If a parasitic light ray leaves the lighting module by one of the chimneys 30A, 30B, for example by following the path represented by the line R2 in FIG. 4, it also does not participate in the lighting of the road or the vehicle environment because the chimney is tilted backwards. Thus, the inclination towards the rear of the chimneys avoids making visible light rays which would come out parasitically from the lighting module by the chimneys 30A, 30B.
    Naturally, the invention is not limited to the embodiment described. In particular, as a variant, the air outlet 30 from the first zone Z1, which may be in the form of one or more chimneys 30A, 30B, might not open up but on the right and / or left sides , or downwards, or even behind the lighting module 3. Advantageously, in all cases, the air outlet is advantageously substantially inclined towards the rear to prevent parasitic light rays from being made visible to the front of the vehicle through the air outlet.
    Thanks to the invention, a lighting module is obtained in which a flow of air is circulated not only around heat sinks but also around the light source 22 ’and the matrix of micro-mirrors. The air flows are independent, which makes it possible to obtain a particularly efficient cooling. Compared to known light modules, the temperature of the light source can be lowered by about 10 ° C and the temperature of the micro-mirror array can be lowered by about 5 ° C, which improves the service life and the reliability of these components.
    权利要求:
    Claims (16)
    [1" id="c-fr-0001]
    claims
    1. Lighting module (3) for a headlight (2) of a motor vehicle (1), characterized in that it comprises:
    a first zone (Z1) comprising at least one light source (22 ') and an array of micro-mirrors (24), a second zone (Z2) comprising a first heat sink (26) capable of dissipating the heat generated by the at least one light source (22 '), a third zone comprising a second heat sink (27) capable of dissipating the heat generated by the matrix of micro-mirrors (24), at least one means for generating a flux of air (31 ', 32') to generate an air flow in the first zone (Z1), in the second zone (Z2) and in the third zone (Z3), the first zone (Z1), the second zone ( Z2) and the third zone (Z3) being distinct from each other, the first zone (Z1) being arranged vertically between the second zone (Z2) and the third zone (Z3), the first zone (Z1) comprising an outlet d air (30).
    [2" id="c-fr-0002]
    2. Lighting module (3) according to the preceding claim characterized in that the air outlet (30) from the first zone (Z1) is oriented upwards by an upper face of the lighting module.
    [3" id="c-fr-0003]
    3. Lighting module (3) according to one of the preceding claims, characterized in that said air outlet (30) comprises at least one chimney (30A, 30B) passing through the second zone (Z2), in particular two chimneys (30A, 30B) passing through the second zone (Z2) on either side of the first heat sink (26).
    [4" id="c-fr-0004]
    4. Lighting module (3) according to the preceding claim, characterized in that the at least one chimney (30A, 30B) is oriented vertically and is inclined towards the rear of the lighting module (3).
    [5" id="c-fr-0005]
    5. Lighting module (3) according to one of claims 1 to 3, characterized in that the air outlet (30) from the first zone (Z1) is inclined towards the rear of the lighting module ( 3).
    [6" id="c-fr-0006]
    6. Lighting module (3) according to one of the preceding claims, characterized in that the second zone (Z2) is arranged above the first zone (Z1), and in that the third zone (Z3) is arranged below the first zone (Z1).
    [7" id="c-fr-0007]
    7. Lighting module (3) according to one of the preceding claims, characterized in that the first zone (Z1) is delimited from the second zone (Z2) at least partially by a first electronic card (23) supporting the at least one light source (22 ') and / or by a base (26a) of the first heat sink (26), and / or in that the first zone (Z1) is delimited from the third zone (Z3) at least partially by a second electronic card (25) supporting the matrix of micro-mirrors (24) and / or by a base (27a) of the second heat sink (27).
    [8" id="c-fr-0008]
    8. Lighting module (3) according to one of the preceding claims, characterized in that it comprises a projection optic (21) capable of guiding light rays reflected by the matrix of micromirrors (24), the first area (Z1) and / or the second zone (Z2) comprising an air outlet above the projection optics.
    [9" id="c-fr-0009]
    9. Lighting module (3) according to one of the preceding claims, characterized in that the second zone (Z2) and / or the third zone (Z3) comprises an air outlet (34, 35) towards the before.
    [10" id="c-fr-0010]
    10. Lighting module (3) according to one of the preceding claims, characterized in that the first zone (Z1) and / or the second zone (Z2) and / or the third zone (Z3) comprises an entry of air (33) from the rear.
    [11" id="c-fr-0011]
    11. Lighting module (3) according to one of the preceding claims, characterized in that the means for generating an air flow (31 ', 32') comprises at least one fan (31, 32), in particular at least two fans (31, 32).
    [12" id="c-fr-0012]
    12. Lighting module (3) according to the preceding claim, characterized in that it comprises a first fan (31) capable of generating an air flow only in the first zone (Z1) and in the third zone (Z3 ) and a second fan (32) capable of generating an air flow only in the second zone (Z2).
    [13" id="c-fr-0013]
    13. Lighting module (3) according to the preceding claim, characterized in that the two fans (31, 32) are arranged parallel one above the other.
    [14" id="c-fr-0014]
    14. Lighting module (3) according to the preceding claim, characterized in that the at least one light source (22 ’) comprises at least one light-emitting diode (22).
    [15" id="c-fr-0015]
    15. Projector (2) comprising a lighting module (3) according to one of the preceding claims.
    [16" id="c-fr-0016]
    16.
    Motor vehicle (1), characterized in that it comprises a lighting module (3) according to one of claims 1 to 14 or a headlight (2) according to the preceding claim.
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    同族专利:
    公开号 | 公开日
    FR3079283B1|2020-10-02|
    EP3543597A1|2019-09-25|
    CN110296374A|2019-10-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2017056469A1|2015-09-29|2017-04-06|パナソニックＩｐマネジメント株式会社|Light source device and projection device|
    US20170160542A1|2015-12-08|2017-06-08|Toyota Jidosha Kabushiki Kaisha|Vehicle headlamp|
    WO2017132713A1|2016-02-02|2017-08-10|Zkw Group Gmbh|Lighting unit for a motor vehicle|
    CN111561685A|2019-09-30|2020-08-21|长城汽车股份有限公司|Lighting apparatus and vehicle|
    CN111692573B|2019-09-30|2022-02-25|长城汽车股份有限公司|Lighting device and vehicle|
    法律状态:
    2019-03-29| PLFP| Fee payment|Year of fee payment: 2 |
    2019-09-27| PLSC| Search report ready|Effective date: 20190927 |
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    优先权:
    申请号 | 申请日 | 专利标题
    FR1852522|2018-03-23|
    FR1852522A|FR3079283B1|2018-03-23|2018-03-23|LIGHTING MODULE EQUIPPED WITH A MATRIX OF MICRO-MIRRORS WITH OPTIMIZED COOLING|FR1852522A| FR3079283B1|2018-03-23|2018-03-23|LIGHTING MODULE EQUIPPED WITH A MATRIX OF MICRO-MIRRORS WITH OPTIMIZED COOLING|
    EP19164754.4A| EP3543597A1|2018-03-23|2019-03-22|Lighting module provided with a micro-mirror array with optimised cooling|
    CN201910225394.3A| CN110296374A|2018-03-23|2019-03-22|Optimize the cooling lighting module equipped with micromirror matrix|
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