• 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:
    The invention relates to a projector, in particular for a motor vehicle, comprising a plurality of light modules and a duct (108) for the cooling air of the light modules, with at least one air inlet (1161, 1162) for one or more fans (110), a plurality of air outlets (1201, 1202, 1203, 1204) to the light modules, and a passage (1221, 1222, 1223, 1224) connecting the at least one input (1161, 1162) with the outputs (1201). , 1202, 1203, 1204). The conduit comprises at least one insert wall (124) for separating the passage.
    公开号:FR3042259A1
    申请号:FR1559625
    申请日:2015-10-09
    公开日:2017-04-14
    发明作者:Saad Lotfi Redjem；Francois Berrezai
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    The invention relates to the field of lighting and / or light signaling, in particular for a motor vehicle. More particularly, the invention relates to the cooling of light modules of a motor vehicle headlamp.
    Light sources in projectors and light fixtures are subject to heating and often require cooling. This is particularly the case for semiconductor light sources, such as electroluminescent diodes or laser diodes. These light sources are indeed very small for a significant lighting power. They are usually arranged on a board of the printed circuit type and are often thermally coupled to one or more radiators.
    The published patent document DE 10 2007 043 961 A1 discloses a projector comprising a plurality of light modules whose light sources of the semiconductor type are coupled to radiators. These are cooled by a forced air flow through a conduit. The latter comprises a cooling air inlet moved by a fan, several outlets opening near the coolers and a passage connecting the inlet to the outlets. The passage includes branches dividing the flow of air from the inlet into several flow rates to the different outlets. The construction of the duct is conventional in that it is the ramifications of the duct which realize the distribution of the inlet air flow. The number of possible outlets is however limited by the ramifications and, moreover, the distribution of the specific flow rates of the various outputs is not controlled. Indeed, an unidentified pressure drop downstream in one of the branches can have a significant adverse influence on the flow distribution. In addition, the realization of ramifications is not without some problems of size and cost of implementation.
    Patent document FR 2 946 730 A1 discloses, similarly to the preceding document, a motor vehicle headlamp, comprising several modules whose light sources are cooled by a flow of cooling air flowing through a duct arranged between a fan and respective radiators of the light sources. Similar to the conduit of the previous teaching, the conduit is made to have a cumbersome and complex form from a cost of production point of view. The distribution of flows has the same disadvantages as in the previous teaching.
    The document US Patent 2011/0051453 A1 discloses a projector for a motor vehicle, comprising several light modules whose light sources are in thermal contact with a common radiator. A fan is arranged in the low position and away from the radiator to allow the pivoting of the light sources and the radiator in connection with a directional lighting function. This solution is interesting for its simplicity but presents constraints as regards the location of the modules and more particularly the light sources. The invention aims to propose a solution to the cooling problem of light modules of a projector or light device. More particularly, the invention aims to allow efficient distribution of a cooling air flow produced by one or more radiators. The subject of the invention is a headlamp, in particular for a motor vehicle, comprising: a plurality of light modules; an air duct for cooling the light modules, with at least one inlet of an air flow of one or more fans, several air outlets to the light modules, and a passage connecting the inlet (s) with the exits ; remarkable in that the conduit comprises at least one reported partition wall of the passage.
    By reported wall is meant a separate wall of the conduit body, the wall then being fixed to said body. The body advantageously forms the outer walls of the conduit.
    The passage advantageously forms several fluid veins, such as for example at least four fluid veins. Each fluid stream is advantageously associated with one or more outlets.
    The duct is advantageously made of plastic material, in particular thermoplastic.
    According to an advantageous embodiment of the invention, the or at least one of the attached walls is adjacent to the inlet or at least one of the entries.
    According to an advantageous embodiment of the invention, the duct extends generally in a plane, the or at least one of the added walls being parallel to said plane or forming an angle of less than 15 °, preferably less than 10 °, with said plan.
    According to an advantageous embodiment of the invention, the or at least one of the reported walls is configured to divide the air flow, preferably at the inlet of said duct, into at least two separate veins towards the different outlets.
    According to an advantageous embodiment of the invention, the reported wall or walls cooperate with one or more partition walls fixed so as to divide the flow of air, preferably at the inlet of said duct, into at least four separate veins towards the different exits.
    According to an advantageous embodiment of the invention, the fixed partition or walls are transverse, preferably perpendicular, to the reported walls.
    According to an advantageous embodiment of the invention, the conduit comprises at least two hollow portions assembled to one another, the or at least one of the added walls being disposed between said hollow portions. The reported walls are thus sandwiched between the at least two hollow parts.
    According to an advantageous embodiment of the invention, the at least two hollow portions delimit in a complementary manner the passage between the at least one inlet and the outlet, along one or more transverse sections of said passage.
    According to an advantageous embodiment of the invention, the at least two hollow portions form at least one hinge connecting them and allowing them to be brought together in order to assemble them, said hinge preferably being integral with said hollow portions.
    According to an advantageous embodiment of the invention, the at least two hollow portions are assembled in a generally plane mutual contact, the or at least one of the attached walls extending parallel to said plane or forming with said plane an angle of less than 15 ° preferably less than 10 °.
    According to an advantageous embodiment of the invention, the at least two hollow portions delimit the entry or at least one of the entries, in a cross section of the at least one entry.
    According to an advantageous embodiment of the invention, each of the outlets is integrally formed on one of the at least two hollow portions.
    According to an advantageous embodiment of the invention, at least one, preferably each, of the outlets form a channel extending transversely to the duct.
    According to an advantageous embodiment of the invention, the channel formed by the outlet (s) has a section with a convergent profile.
    According to an advantageous embodiment of the invention, each of the at least two hollow portions comprises a bottom wall, the or each of the fixed partition walls extending on one of said bottom walls.
    According to an advantageous embodiment of the invention, each of the at least two hollow portions comprises side walls, the or each of the fixed partition walls being in contact with at least one of the side walls.
    According to an advantageous embodiment of the invention, the fixed partition walls comprise at least one partition wall transverse to the duct, with an edge adjacent to an edge of the one or more of the attached walls, said partitioning wall or walls being preferentially usually straight.
    According to an advantageous embodiment of the invention, the fixed partition walls comprise at least one guiding wall extending along the duct, the said guiding wall or walls being preferentially curved.
    According to an advantageous embodiment of the invention, the partition wall or walls are on one of the at least two hollow portions of the conduit and the or at least one of the guide walls is on another of said at least two hollow portions.
    The measures of the invention are interesting in that they make it possible to produce a duct forming several veins towards different outlets, which is efficient and economical. The duct is efficient in that providing at least one partition wall which is reported allows to optimally separate the fluid veins. The conduit is economical to achieve in that all its fixed walls can extend in the same direction, which is favorable to demolding operations. The one or more reported walls can thus cooperate with the fixed walls to delimit in a precise and controlled manner the different fluid veins towards the different outlets. Other features and advantages of the present invention will be better understood from the description and drawings in which: FIG. 1 is a front view of a projector according to a first embodiment of the invention; FIG. 2 is a rear view of the modules and the cooling duct of said projector modules of FIG. 1; - Figure 3 is a plan view of the duct of Figures 1 and 2, the duct being in the open position; FIG. 4 is a perspective view of a duct according to a second embodiment, the duct being in the open position; FIG. 5 is a plan view of the duct of FIG. 4; - Figure 6 is a perspective view of the duct of Figures 4 and 5, in the assembled state.
    Figures 1 to 3 illustrate a projector according to a first embodiment of the invention.
    Figure 1 illustrates the projector 2 from a viewpoint located at the front. The projector 2 is illustrated without closure glass. It comprises a housing 4 housing light modules 6, in this case four lighting modules. The housing 4 also houses a cooling system of the modules 6, specifically the light sources of the modules in question, comprising a duct 8 of cooling air and two fans 10 and 12 aeraulic connected with the duct 8. The latter comprises air outlets arranged near radiators of the light modules 6.
    Figure 2 is a rear view of the light modules 6 and their cooling system. There can be observed the two fans 10 and 12 disposed in front of corresponding inputs of the duct 8. It can also be observed that the modules 6 each comprise a radiator 14 disposed at the rear. The light source (s) of each of the modules (6) are thermally connected to the radiator of the module, so that the cooling air flow of the duct (8) along the radiators ensures cooling of the light source (s) in question.
    The light sources are advantageously of the semiconductor type, such as for example electroluminescence diodes or laser type.
    Figure 3 is a plan view of the conduit 8, the latter consisting of two hollow portions 81 and 82 which are shown in the open state. More specifically, these two parts 81 and 82 are interconnected by a hinge 83. The hollow parts and the hinge are advantageously made of a single piece of plastic material.
    Each of the two hollow portions 81 and 82 comprises two inputs 161/162 and 181/182. It is understood that the inputs 161 and 162, and the inputs 181 and 182, cooperate with each other when the two hollow portions 81 and 82 are assembled together to form the inputs 16 and 18. duct cooperating with the fans 10 and 12 (Figure 2), respectively.
    The hollow portion 82 comprises the four outlets 201, 202, 203 and 204 intended to be disposed near the radiators 14 of the modules 6 (FIG. 2). The duct 8 thus forms a passage connecting the inlets 16 and 18 to the outlets 201, 202, 203 and 204. More specifically, the passage is divided into four veins 221, 222, 223 and 224 specific to the four outlets 201, 202, 203 and 204, respectively. The vein 221 in fact connects the inlet 16 (161 + 162) to the outlet 201. Similarly, the vein 222 connects the inlet 18 (181 + 182) to the outlet 202. The vein 223 connects the inlet 18 to the output 203 and the vein 224 connects the input 16 to the output 204. Each of the inputs 16 and 18 is thus connected to two veins 221 and 224, and 222 and 223, respectively. To do this, the duct 8 comprises a partition wall 24 (shaded area) disposed near the inlets 16 and 18 and essentially in the contact plane of the two hollow portions 81 and 82. This partition wall is reported in that it is disposed between the two hollow portions 81 and 82, this wall being distinct from said hollow portions. The reported dividing wall 24 thus makes it possible to divide each of the two forced air flows in the inlets 16 and 18 by the fans in two fluid veins, in this case the fluid veins 221 and 224 for the inlet 16 and the veins fluids 222 and 223 for the inlet 18.
    The fluid veins are delimited by the fixed partition walls 261, 262, 281, 282, 283, 284 and 285 of the two hollow portions 81 and 82. These fixed partition walls extend generally perpendicular to the mean plane of contact of the two parts. The added wall 24 cooperates with the two walls 261 and 262 in order to delimit, in the hollow part 82, the veins 221 and 222. The two walls 261 and 262 have their free edges. adjacent to two opposite edges of the insert wall 24, respectively. Of the two other edges of the insert wall 24, one is adjacent to one side wall of the hollow portion 82, along the hinge 83, and the other is located in the inlets 16 and 18 and forms an edge. separation of flows from these inputs.
    The hollow portions 81 and 82 each comprise a bottom wall and side walls, said walls forming a U-shaped profile. The fixed partition walls extend over the bottom walls and are contiguous with the corresponding side walls.
    Among the fixed partition walls, there are the walls 281 and 282 on the hollow portion 82, of generally curved shape and providing appropriate guidance of the fluid veins 221 and 222 to the outputs 201 and 202. There is also the wall 283, always on the hollow portion 82, of generally curved shape and providing appropriate guidance of the fluid stream 223 to the outlet 203. The fluid stream 223 extends, downstream of the added wall 24, over the entire thickness of the duct 8, that is to say in the two hollow portions 81 and 82. For this purpose, the fixed wall 284 on the hollow portion 81 cooperates with the fixed wall 283. It should be noted that the fixed wall 284 also cooperates with the wall reported 24 in that it comes into contact with the latter. Similarly, the fixed wall 285, on the hollow part 81, also co-operates with the added wall 24. Similar to the fluid duct 223, the fluid duct 224 extends over the entire thickness of the duct downstream of the added wall 24.
    When the two hollow portions 81 and 82 are folded over each other so as to form the conduit 8, each of the inlets 16 and 18 has a portion of the separation edge of the added wall 24, these edge portions ensuring the splitting in two of each of the flows at said inputs. In other words, each of the flow rates produced by the fans 10 and 12 (Figures 1 and 2) is separated into two fluid streams near the inlet, which ensures a controlled distribution of flow to the different outputs. In addition, the implementation of the reported wall 24 is particularly simple. The realization of the hollow portions 81 and 82 is also advantageous in that they can be made in one piece by plastic injection into a mold. The walls delimiting the duct and the fixed separation walls essentially all extend in the same direction, which is favorable to demolding operations.
    The added wall 24 can be glued or simply deposited in a housing on the hollow portion 82. The two hollow portions 81 and 82 can be assembled to one another by clipping, gluing and / or screwing.
    Figures 4 to 6 illustrate a cooling air duct according to a second embodiment, it being understood that this duct can be implemented in a projector as shown in Figure 1.
    The reference numbers of the first embodiment are used to designate the same elements or corresponding elements, these numbers being however increased by 100 for purposes of distinguishing between the two embodiments. Reference is also made to the description of these elements in relation to the first embodiment. Specific numbers are used for the specific elements of this embodiment.
    The duct 108 is constituted, similarly to that of the first mode, essentially of two hollow portions 1081 and 1082 interconnected by a hinge 1083. Unlike the duct of FIGS. 1 to 3, the duct 108 has a single inlet 116 (1161 +1162) for a single fan 110. This means that the air flow at the inlet is divided into four fluid streams 1221, 1222, 1223 and 1224 to the different outlets 1201, 1202, 1203 and 1204, respectively. Each of the hollow portions 1081 and 1082 includes a fixed partition wall 1263 and 1264, respectively, extending in the axis of the inlet. These two walls 1263 and 1264 are advantageously aligned, it being understood that they can also be shifted. The added partition wall 124 extends transversely to the walls 1261, 1262, 1263 and 1264. The walls 1261, 1262 and 1264 delimit, with the added wall 124, the veins 1221 and 1222 in the hollow portion 1082. Similarly, the walls 1263, 1284 and 1285 delimit, with the insert wall 124, the veins 1223 and 1224 in the hollow portion 1081, at the height of the added wall 124, and in the hollow portions 1081 and 1082, downstream of said wall 124. At the Figure 6, we can observe the clipping means 130 ensuring the connection between the two hollow parts when they are assembled to one another.
    In relation to the two embodiments above and in general, the outputs of the conduit can form channels extending transversely to the general extent of the conduit. These channels may have a convergent section for accelerating the flow of cooling air.
    In general, it is understood that the number of inputs, outputs and fluid veins can vary from the two embodiments described above.
    权利要求:
    Claims (18)
    [1" id="c-fr-0001]
    claims
    1. Projector (2) in particular for a motor vehicle, comprising: - several light modules (4); - a duct (8; 108) of cooling air of the light modules (4), with at least one inlet (16, 18; 116) of an air flow of one or more fans (10, 12; 110), a plurality of air outlets (201, 202, 203, 204, 1201, 1202, 1203, 1204) to the light modules (4), and a passage connecting the at least one input to the outputs; characterized in that the conduit (8; 108) comprises at least one partition wall (24, 124) for separating the passage.
    [2" id="c-fr-0002]
    2. Projector (2) according to claim 1, characterized in that the or at least one of the walls (24, 124) is adjacent to the inlet (116) or at least one of the inputs (16, 18).
    [3" id="c-fr-0003]
    3. Projector (2) according to one of claims 1 and 2, characterized in that the duct (8; 108) extends generally in a plane, the or at least one of the walls (24; 124) being parallel plane or forming an angle of less than 15 °, preferably less than 10 °, with said plane.
    [4" id="c-fr-0004]
    4. Projector (2) according to one of claims 1 to 3, characterized in that the or at least one of the reported walls (24, 124) is configured to divide the air flow, preferably at the entrance (16). , 18; 116) of said duct, in at least two separate veins (221, 222, 223, 224, 1221, 1222, 1223, 1224) to the different outlets (201, 202, 203 and 204; 1201, 1202, 1203, 1204).
    [5" id="c-fr-0005]
    5. Projector (2) according to one of claims 1 to 4, characterized in that the or the reported walls (24, 124) cooperate with one or more fixed partition walls (261, 262, 281, 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) so as to divide the flow of air, preferably at the inlet (116) or the inlets (16, 18) of said duct, into at least four veins separated (221, 222, 223, 224; 1221, 1222, 1223, 1224) to the different outputs (201, 202, 203 and 204; 1201, 1202, 1203, 1204).
    [6" id="c-fr-0006]
    6. Projector (2) according to claim 5, characterized in that the or the fixed partition walls (261, 262, 281, 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) are transverse, preferably perpendicular, to the reported wall (s) (24; 124).
    [7" id="c-fr-0007]
    7. Projector (2) according to one of claims 1 to 6, characterized in that the conduit (8; 108) comprises at least two hollow portions (81, 82; 1081, 1082) assembled to one another the or at least one of the insert walls (24; 124) being disposed between said hollow portions (81, 82; 1081, 1082).
    [8" id="c-fr-0008]
    8. Projector (2) according to claim 7, characterized in that the at least two hollow portions (81, 82; 1081, 1082) form at least one hinge (83; 1083) connecting them and bringing them closer together in order to assembling them, said hinge (83; 1083) being preferably integral with said hollow portions (81, 82; 1081, 1082).
    [9" id="c-fr-0009]
    9. Projector (2) according to one of claims 7 and 8, characterized in that the at least two hollow portions (81, 82; 1081, 1082) are assembled in mutual contact generally plane, the or at least one of reported walls (24; 124) extending parallel to said plane or forming with said plane an angle of less than 15 °, preferably less than 10 °.
    [10" id="c-fr-0010]
    10. Projector (2) according to one of claims 7 to 9, characterized in that the at least two hollow portions (81, 82; 1081, 1082) define the inlet (116) or at least one of the inputs (16). , 18), in a cross section of said at least one input.
    [11" id="c-fr-0011]
    11. Projector (2) according to one of claims 7 to 10, characterized in that each of the outputs (201, 202, 203 and 204; 1201, 1202, 1203, 1204) is integrally formed on one of the at least two parts hollow (81, 82, 1081, 1082).
    [12" id="c-fr-0012]
    12. Projector (2) according to one of claims 7 to 11, characterized in that at least one, preferably each, the outputs (201, 202, 203, 204; 1201, 1202, 1203, 1204) form a channel extending transversely to the conduit (8; 108).
    [13" id="c-fr-0013]
    13. Projector (2) according to claim 12, characterized in that the channel formed by the or the outputs (201, 202, 203, 204, 1201, 1202, 1203, 1204) has a section with a convergent profile.
    [14" id="c-fr-0014]
    14. Projector (2) according to one of claims 5 and 6 and according to one of claims 7 to 13, characterized in that each of the at least two hollow portions (81, 82; 1081, 1082) comprises a wall of bottom, the or each of the fixed partition walls (261, 262, 281, 282, 283, 284, 285, 1261, 1262, 1263, 1264, 1284, 1285) extending over one of said bottom walls.
    [15" id="c-fr-0015]
    15. Projector (2) according to claim 14, characterized in that each of the at least two hollow portions (81, 82; 1081, 1082) comprises side walls, the or each of the fixed partition walls (261, 262, 281 , 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) being in contact with at least one of the sidewalls.
    [16" id="c-fr-0016]
    16. Projector (2) according to one of claims 14 and 15, characterized in that the fixed partition walls comprise at least one partition wall (261, 262; 1261, 1262) transverse to the conduit, with an edge adjacent to an edge of the or one of the reported walls (24; 124), said one or more partition walls being preferably generally straight.
    [17" id="c-fr-0017]
    Projector (2) according to one of Claims 14 to 16, characterized in that the fixed partition walls comprise at least one guide wall (281, 282, 283, 284, 285, 1284, 1285) extending along the conduit (8; 108), said one or more guide walls being preferably curved.
    [18" id="c-fr-0018]
    18. Projector (2) according to claims 16 and 17, characterized in that the partition wall or walls (261, 262; 1261, 1262) are on one of the at least two hollow portions (82; 1082) of the duct (8). 108) and the or at least one of the guide walls (284, 285; 1284, 1285) are on another of said at least two hollow portions (81; 1081).
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    同族专利:
    公开号 | 公开日
    US10451244B2|2019-10-22|
    CN107023788A|2017-08-08|
    EP3153770A1|2017-04-12|
    FR3042259B1|2018-09-07|
    US20170102120A1|2017-04-13|
    CN107023788B|2020-11-06|
    引用文献:
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    CN109163307B|2018-08-02|2021-08-13|苏州培星智能装备科技有限公司|Adjustable automobile lamp heat dissipation device|
    法律状态:
    2016-10-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-04-14| PLSC| Publication of the preliminary search report|Effective date: 20170414 |
    2017-10-31| PLFP| Fee payment|Year of fee payment: 3 |
    2018-10-30| PLFP| Fee payment|Year of fee payment: 4 |
    2019-10-31| PLFP| Fee payment|Year of fee payment: 5 |
    2020-10-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-10-29| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1559625A|FR3042259B1|2015-10-09|2015-10-09|COOLING AIR DUCT FOR MOTOR VEHICLE PROJECTOR|
    FR1559625|2015-10-09|FR1559625A| FR3042259B1|2015-10-09|2015-10-09|COOLING AIR DUCT FOR MOTOR VEHICLE PROJECTOR|
    EP16190426.3A| EP3153770A1|2015-10-09|2016-09-23|Cooling air duct for motor vehicle headlight|
    US15/279,533| US10451244B2|2015-10-09|2016-09-29|Cooling air duct for motor vehicle headlamp|
    CN201610880706.0A| CN107023788B|2015-10-09|2016-10-09|Air cooling duct for a motor vehicle headlight|
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