• 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 light module (2) for a motor vehicle, comprising at least one light source (12), a heat sink (6) adapted to dissipate the heat produced by the light source or sources (12), a surface reflector (10) adapted to reflect the rays of the light source or sources (12), a lens (8) adapted to deflect rays from the reflecting surface (10) to form a light beam along an optical axis of the module, and a support (4) of the lens (8) and the reflecting surface (10) on the heat sink (6). The dissipator (6) and / or the support (4) comprises at least one, preferably at least two bosses (63) directed vertically and in contact with the other of the dissipator (6) and the support (4) so as to maintain a predetermined distance between the dissipator and the support.
    公开号:FR3022974A1
    申请号:FR1456227
    申请日:2014-06-30
    公开日:2016-01-01
    发明作者:Mehdi Madelaine；Eric Chatel
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to the field of lighting, more particularly to automotive lighting. The invention relates to a projector lighting module for a motor vehicle. The published patent document EP 2 428 725 A2 discloses a car projector lighting module. The lighting module in question comprises a light-emitting diode-type light source (LED) mounted on a plate disposed on a cooling radiator of said diode. The module also comprises a first reflective surface in the form of a half-shell and able to reflect the rays emitted by the light source towards a second reflecting surface, called a bending surface, with a cutting edge of the illumination beam. The lighting module also includes a lens disposed at the front of the second reflective surface. The rays reflected by the first reflective surface and passing forward of the puncture cut edge meet and are deflected by the lens. The rays meeting the second reflecting surface, instead of meeting the lens at its lower part with a lower incidence angle than the previous rays, are reflected towards the upper part of the lens with a substantially identical angle of incidence. These 20 spokes are then deflected by the lens towards the bottom of the beam instead of being deflected upwards, thus achieving a typical cutoff of a lighting beam of the "code" type or even dipped headlamps. In this module, a main part serves as support for the lens, the reflective surface in the form of a half-shell and the folder. This piece is then attached to the radiator. The latter directly supports the platinum with the light source. The longitudinal positioning between the main part and the radiator is effected by means of eyelets on the main part cooperating by engagement with drums on the radiator. Fastening screws are then screwed into the drums to secure the main part on the radiator. The main part comprises abutment surfaces cooperating directly with the radiator 30 for vertical positioning. This teaching is interesting in that the main piece ensures a precise relative positioning between the lens, the reflective surface, the folder and the radiator. Indeed, the lens is fully supported by the main piece. In the case of bulky and heavy lenses, this can pose some difficulties in terms of stability of the lens especially in the presence of vibrations. In addition, the main piece is a complicated piece that may also have some manufacturing tolerances potentially affecting the accuracy of the assembly.
    [0002] The object of the invention is to overcome at least one of the drawbacks of the prior art, more particularly of the aforementioned prior art. More particularly, the invention aims to provide a lighting module whose implementation is simplified while maintaining a high level of accuracy between the lens and the rest of the module, such as the reflecting surface and the source or sources bright. The subject of the invention is a light module, in particular for lighting and / or signaling, for a motor vehicle, comprising: at least one light source; a heat sink adapted to dissipate the heat produced by said source or sources; a reflective surface capable of reflecting the rays of the light source or sources; a lens adapted to deflect the rays from the reflecting surface to form a light beam along an optical axis of the module; a support for the lens and the reflective surface, said support being mounted on the heat sink; remarkable in that the heat sink and / or the support comprises at least one, preferably at least two bosses in contact with each other of the dissipator and the support so as to maintain a predetermined distance between the dissipator and the support. According to an advantageous embodiment of the invention, the boss or bosses are directed vertically. According to an advantageous embodiment of the invention, the boss or bosses are located, in the direction of the optical axis, between the reflecting surface and the lens. According to an advantageous embodiment of the invention, the lens comprises at least one, preferably at least two lower fastening tabs extending vertically through the support. According to an advantageous embodiment of the invention, the support comprises a notch, the lower fastening tab or tabs extending through this notch.
    [0003] According to an advantageous embodiment of the invention, the or each of the fixing lugs cooperates by engagement with the heat sink, said engagement preferably having a vertical clearance of less than 0.5 mm, more preferably a vertical clearance of less than 0.1 mm, more preferably still a vertical tightening. According to an advantageous embodiment of the invention, the heat sink comprises a rear portion supporting the light source or sources and a front portion, the boss or bosses being on the front portion. According to an advantageous embodiment of the invention, the front portion of the heat sink is against the bottom portion of said dissipator. According to an advantageous embodiment of the invention, the heat sink has a stepped profile, the front portion forming a first step of said staircase and the rear portion forming a second step, higher, said staircase. According to an advantageous embodiment of the invention, the support extends along the respective upper surfaces of the front and rear portions of the heat sink, the lens being in vertical support on said support. According to an advantageous embodiment of the invention, the engagement between the lens and the heat sink is on the front portion of said dissipator. According to an advantageous embodiment of the invention, the front portion of the heat sink 20 comprises at least one, preferably at least two tabs extending forward and cooperating by engagement with an opening in the or the lugs of the lens , respectively. According to an advantageous embodiment of the invention, the or each of the legs of the heat sink forms a stop in the direction of the optical axis for the corresponding attachment lug of the lens. According to an advantageous embodiment of the invention, the or each leg of the heat sink has a profile forming, in the direction of the optical axis, a projection. According to an advantageous embodiment of the invention, the or each of the legs of the heat sink comprises at least one rib extending in the direction of the optical axis, so as to achieve a clamping engagement with the corresponding fastening tab of the lens. According to an advantageous embodiment of the invention, at least two of the bosses are arranged laterally on either side of the optical axis of the module.
    [0004] According to an advantageous embodiment of the invention, the reflecting surface and the support are a single piece. The reflecting surface may be formed on a cavity of the support, for example by metallization of this cavity, if necessary the reflecting surface and the support forms the same part. According to an advantageous embodiment of the invention, the support comprises positioning means with respect to the heat sink and in the direction of the optical axis. According to an advantageous embodiment of the invention, the positioning means of the support in the direction of the optical axis cooperate with a plate supporting the light source or sources, said plate being disposed on the rear portion of the heat sink 15. Advantageously, the light source (s) are of the electroluminescence diode type. Advantageously, the plate comprises a printed circuit, preferably with a connector, said circuit being connected to the light source (s) in view of their power supply. According to an advantageous embodiment of the invention, the means for positioning the support in the direction of the optical axis comprise at least one, preferably at least two lugs, each of the lugs protruding vertically downwards in a cavity of the heat sink, said abutment or each of said stops cooperating by contact with the edge of an orifice in the plate. According to an advantageous embodiment of the invention, the heat sink is made of metal material and / or molded plastic, the or at least two of the bosses being integral with the dissipator and made by molding said dissipator.
    [0005] The invention also relates to a light device for a motor vehicle, comprising a housing and at least one light module, remarkable in that the module or at least one of the modules is in accordance with the invention. The measurements of the invention are interesting in that they make it possible to easily and economically achieve a lighting module with precise positioning of the lens with respect to the reflecting surface and / or the light source (s). Other features and advantages of the present invention will be better understood from the description and the drawings, of which: FIG. 1 is a perspective view of a car projector lighting module, in accordance with FIG. invention; - Figure 2 is a perspective view of the radiator, the folder and the light source of the module of Figure 1; Fig. 3 is an elevational view of the module of Fig. 1 showing a cutting axis IV-IV; - Figure 4 is a sectional view IV-IV of the module of Figure 3; - Figure 5 is a perspective view of the radiator provided with the folder where it is shown in transparency, showing positioning ribs of said folder on the radiator; Figure 6 is a cross-sectional view of the module of Figure 1 at the folder; FIG. 7 is an elevational view of the module of FIG. 1, showing a section line VIII-VIII; - Figure 8 is a sectional view VIII-VIII of the module of Figure 7; FIG. 9 is a sectional view VIII-VIII of the module of FIG. 7, the view being however in perspective and the section being opposite that of FIG. 8. FIG. 1 is a perspective representation of a module lighting according to the invention. This lighting module can be mounted in a motor vehicle headlight. In this case, this module produces a cut-off lighting beam such as for a lighting function of the "code" type or even dipped beam. The lighting module 2 illustrated in Figure 1 comprises, essentially a radiator, or heat sink, 6 on which is arranged a plate 16 provided with one or more light sources 12, preferably of the electroluminescence diode type. A support 4 shown in transparency and extending over the entire length of the module is disposed on the radiator 6. The support is in contact with a lens 8 and comprises a reflecting surface 10. The latter has a generally half-shell shape covering the light source 12. The profile of the reflecting surface 10 may be generally elliptical with two foci. The light source is located at the first focus and a reflective surface 14 is located substantially in the plane of the light source and with a leading edge located at the second focus. Reflective surface 14 is commonly referred to as a "bender" in that it reflects a portion of rays from the reflecting surface 10 to an upper portion of the lens. Indeed, in the absence of the reflective surface 14, the rays passing behind the second focus would meet the lens at a lower part with a lower incidence angle than those passing through the second focus. These rays would then be deflected by the lens so as to form the upper part of the illumination beam. The fact of returning these rays to an upper part of the lens makes it possible to reverse this effect and to form the lower part of the beam. The front edge of the folder 14 thus forms a horizontal cut of the beam. It can also be observed that the reflective surface of the folder 14 forms a projection in the middle so as to form two different cutoff levels between the left and the right part of the illumination beam, in accordance with the regulations concerning vehicle lighting in effect in most countries.
    [0006] The use of a folder to form a cut-off light beam is well known to those skilled in the art. The lighting beam is in a main direction commonly called optical axis of the module. This axis also essentially corresponds to the longitudinal axis of the module.
    [0007] It can also be seen in Figure 1 that the plate 16 comprises at its rear part a connector 18 for its connection to the electrical harness of the projector and the vehicle.
    [0008] FIG. 2 illustrates the radiator 6 of the module of FIG. 1, the radiator being equipped only with the folder 14 and the plate 16. It can be observed that the radiator 6 comprises a rear portion 61 supporting the plate and a front portion 62. The front portion 62 is at a lower level than the rear portion 61. The profile of the radiator 6 is similar to that of a staircase, the front portion 62 corresponding to a first step and the rear portion 61 forming a second step, superior to the first. The folder 14 is located essentially at the front edge of the rear portion 61. More specifically, the folder 14 comprises a central reflective portion 141 and two lateral portions 142 in the form of support arm 4 to the support (Figure 1). This attachment will be further detailed in relation to Figure 6. The folder 14 thus has a U-shaped transverse profile where only the central portion 141 is optically active. The folder can be made from a portion of sheet metal, by shaping, folding and cutting.
    [0009] The front portion 62 comprises on its upper surface two bosses 63. These bosses are intended to ensure exact positioning in the vertical direction of the support 4, as will be detailed in connection with Figures 3 and 4. These bosses may be more numerous . It could also be one or more protrusions extending transversely, in the manner of a rib.
    [0010] The front portion 62 also comprises, at its front edge, two lugs 64 for fixing the lens 8 (FIG. 1), as will be detailed with reference to FIGS. 3 and 4. As can be seen in FIG. rear portion 61 may comprise one or more pins, in this case two pins 63 for passing through corresponding holes of the plate 16. These pins may be generally conical. The plate 16 also comprises orifices 161 intended to receive fixing screws and oblong holes 162 intended to allow a longitudinal positioning, that is to say in the direction of the optical axis, of the support 4 with respect to the platinum 16.
    [0011] FIG. 3 is an elevational view of the module of FIG. 1. FIG. 4 is a representation in section along the axis IV-IV of FIG. 3. It can be seen that the support 4 comprises several portions, in this case a rear portion 41 in contact with the plate 16 on the rear portion 61 of the radiator, an intermediate portion 42 and a front portion 43 disposed above the front portion 62 of the radiator 6 and on its bosses 63.
    [0012] It can be seen in FIG. 4 that the lens 8 comprises two fastening tabs 81 extending from a lower edge towards the tabs 64 of the radiator 6. More specifically, these tabs 81 extend through openings 24 in the portion before 43 of the support 4. These tabs 81 may comprise cavities or through passages, fitting the ends of the tabs 64. As can be seen in Figure 4, the front portion 43 of the support 4 is on its underside , in support on the bosses 63 and on its upper face, resting on the lens 8. The front portion 43 is thus positioned vertically exactly with respect to the radiator 6 and the lens 8. The engagement between the tabs 64 of the radiator 6 and the holes or cavities of the fastening lugs 81 of the lens 8 is preferably without play, more particularly with a clamping. Referring to Figure 2, it can be seen that the tabs 64 of the radiator 6 may have at their ends longitudinal ribs intended to ensure a slight tightening with the fixing lugs 81 of the lens. Since the material of the lens is preferably a translucent or transparent plastic material, such as for example polycarbonate, the fastening lugs 81 may be deformed somewhat when they are placed on the tabs 64, in order to avoid any mechanical play and uncertainty as to the vertical positioning of the lens. With regard to the longitudinal positioning of the lens 8, it can be seen in FIG. 4, as well as in FIG. 2, that the tabs 64 form an S-shaped profile, that is to say a profile with a projection this projection forming an abutment surface in the longitudinal direction of the module. The longitudinal positioning of the fixing lugs 81 of the lens 8 is thus also ensured. Still in FIG. 4, it can be seen that the folder, more precisely its central and optically active portion 141 bears on a rib 66 of the radiator, which will be further detailed in relation to FIGS. 5 and 6. 302 2 9 74 Figure 5 illustrates the radiator 6 of the module of Figure 1, equipped only with the lens 8 and the folder 14, the latter being shown in transparency. It can be seen that the radiator comprises ribs 66 in the shape of H in the longitudinal direction of the module. These ribs serve as a bearing surface for the folder 14. It is indeed important that the folder 14, more particularly its central portion 141 reflecting, be parallel to the upper surface of the rear portion 61 of the radiator 6. In fact, any misalignment of the reflective surface of the folder 14 is likely to significantly modify the photometry of the light beam of the module. It is therefore important to be able to precisely position the folder 14 not only in translation in the longitudinal direction but also vertically and in rotation about a transverse axis. The ribs 66 provide a vertical and rotational positioning about a transverse axis of the folder 14. They also prevent light leakage between the underside of the central portion 141 and the upper face of the rear portion 61 of the radiator. It can also be seen in FIG. 5 that the rear portion 61 of the radiator comprises two cavities 67 whose function will be detailed with reference to FIGS. 8 and 9. Screws 20 and 22 for fixing the plate supporting the light source and 20 5 is a cross-sectional view of the module of FIG. 1, the section being at the level of the folder 14. This view illustrates the mode of fixing and positioning of the folder 14. can observe that the central portion 141 of the folder is in abutment on the transverse rib 66 of the radiator 6. It can also be observed that the attachment arms 142 of the folder cooperate by engagement with holes in the support 4. These arms 142 may comprise for this purpose retaining tongues intended to allow the insertion of the arms 142 into the orifices and to prevent their exit from these orifices. Other fixing and / or retaining means can be envisaged. The ribs 66 illustrated in FIGS. 5 and 6 are preferably integrally formed with the radiator 6. The latter is preferably made of metal or plastic material that can be molded, such as for example aluminum or thermoplastics having thermal conduction properties. . It is therefore interesting to make these ribs directly during the realization of the radiator. It should be noted that the shape of these ribs may deviate from that illustrated in Figures 5 and 6. Indeed, they could for example comprise two transverse ribs parallel and distant from each other. They could also have a U-shaped profile or in the form of a rectangle. It could also be several point bosses. FIG. 7 is an elevational view of the module of FIG. 1. Unlike FIG. 3, FIG. 7 illustrates the module provided with fastening screws 20 and 22, visible in particular in FIG. 5. As can be seen in Figure 7, the cutting axis VIII-VIII passes through an oblong hole 45 of the support 4 and by one of the pins 65 of the radiator 6. The head of the fastening screw 22 passing through the oblong hole is completely received by said hole, meaning that this screw is not supported on the support 4 but only on the plate.
    [0013] FIG. 8 is a sectional representation along axis VIII-VIII of FIG. 7. FIG. 9 is a sectional view VIII-VIII of the module of FIG. 7, the view being in perspective and the viewpoint of FIG. the section opposite to that of Figure 8. It can be seen that the support 4 comprises two lugs 44, on either side of the longitudinal or optical axis of the module. Each of these lugs 44 extends from the rear portion 41 of the support to a cavity 67, that is to say substantially vertically downwards. Each of the lugs 44 also crosses an oblong hole 162 formed in the plate 16 and bears in the longitudinal direction against the edge of said hole. In this case, the support is directed rearward, that is to say that it is the rear portion of the edge of the oblong hole 162 which is in contact with the lug 44. However, it is understood that alternatively this support could be directed forward. The cavities 67 can be dimensioned to allow the lugs 44 to move freely during the positioning of the support 4. For this purpose, the cavity can extend beyond the edge of the oblong hole 162 with which the lug 44 comes in abutment. The plate 16 is fixed by the screw 22 passing through the oblong hole 45 of the support. The plate 16 can be positioned on the radiator 6 by virtue of the two pins 65 of said radiator which cooperate with corresponding orifices of the plate 16. During the positioning of the support 4, after having positioned and possibly fixed the plate 16, the portion rear 41 of said support is deposited against the plate 16 by ensuring that the lugs 44 penetrate the oblong holes 162 of the plate and the corresponding cavities 67 of the radiator. Oblong holes 46 may be provided to cooperate with the pins 65 while allowing the support 4 to move. When the rear portion 41 of the support 4 is in contact with the plate 16, the support 4 can then be displaced substantially in the longitudinal direction. so as to bring each of the lugs 44 into contact with the corresponding edge of the oblong holes 162 of the plate. The fixing screws 20 bearing on the support can then be put in place and tightened in order to secure the support 4 as well as the plate 16 on the radiator 6. The use of the pins 44 as stop means in the longitudinal direction acting between the support and the plate ensures an exact positioning between the reflecting surface 10, supported by the support, and the light source. It should be noted that the pins and the oblong holes of the plate with which they cooperate can be designed to ensure positioning not only in the longitudinal direction but also in the transverse direction, that is to say a positioning in the plane sliding between the plate and the rear portion of the support. For this purpose, the edge of the oblong holes and / or the corresponding lug may / may be profiled (s) so as to ensure a centering of the corresponding lug.
    权利要求:
    Claims (16)
    [0001]
    REVENDICATIONS1. Light module (2), in particular lighting and / or signaling, for a motor vehicle, comprising: - at least one light source (12); - A heat sink (6) adapted to dissipate the heat produced by said light source (s) (12); a reflecting surface (10) able to reflect the rays of the light source (s) (12); a lens (8) capable of deflecting the rays coming from the reflecting surface (10) so as to form a light beam along an optical axis of the module; a support (4) for the lens (8) and the reflecting surface (10), said support being mounted on the heat sink (6); characterized in that the heat sink (6) and / or the support (4) comprises at least one, preferably at least two bosses (63) in contact with each other of the heat sink (6) and the support (4) of in order to maintain a predetermined distance between the dissipator and the support.
    [0002]
    2. Light module (2) according to claim 1, characterized in that the bosses (63) are located, in the direction of the optical axis, between the reflecting surface (10) and the lens (8).
    [0003]
    3. Light module (2) according to one of claims 1 to 2, characterized in that the lens (8) comprises at least one, preferably at least two lower fastening tabs (81) extending vertically through the support (4).
    [0004]
    4. Light module (2) according to claim 3, characterized in that the support comprises a notch, the lower fastening tab or tabs extending through this notch.
    [0005]
    5. Light module (2) according to one of claims 3 and 4, characterized in that the or each of the fixing lugs (81) cooperates by engagement with the heat sink (6), said engagement preferably having a lower vertical clearance at 0.5 mm, more preferably a vertical clearance less than 0.1 mm, more preferably still a vertical clamping.
    [0006]
    6. Light module (2) according to one of claims 1 to 5, characterized in that the heat sink (6) comprises a rear portion (61) supporting the light source (12) and a front portion (62), the or the bosses (63) being on the front portion (62).
    [0007]
    7. Light module (2) according to claim 5 and claim 6, characterized in that the engagement between the lens (8) and the heat sink (6) is on the front portion (62) of said dissipator.
    [0008]
    8. Light module (2) according to claim 7, characterized in that the front portion (62) of the heat sink (6) comprises at least one, preferably at least two tabs (64) extending forward and cooperating by engagement with an opening in the one or more mounting lugs (81) of the lens (8), respectively.
    [0009]
    9. Light module (2) according to claim 8, characterized in that the or each of the legs of the heat sink (64) forms a stop in the direction of the optical axis for the corresponding fixing lug (81) of the lens (8).
    [0010]
    10. Light module (2) according to one of claims 8 and 9, characterized in that the or each of the legs of the heat sink (64) has a profile, in the direction of the optical axis, forming a projection.
    [0011]
    11. Light module (2) according to one of claims 8 to 10, characterized in that the or each of the legs of the heat sink (64) comprises at least one rib extending in the direction of the optical axis, in such a way as to make a clamping engagement with the corresponding fixing lug (81) of the lens (8).
    [0012]
    12. Light module (2) according to one of claims 1 to 11, characterized in that the reflecting surface (10) and the support (4) are a single piece.
    [0013]
    13. Light module (2) according to one of claims 1 to 12, characterized in that the support (4) comprises positioning means (44) relative to the heat sink (6) and in the direction of the axis optical.
    [0014]
    14. Light module (2) according to one of claims 6 to 11 and according to claim 13, characterized in that the positioning means (44) of the support (4) in the direction of the optical axis cooperate with a platinum (16) supporting the light source (s) (12), said plate (16) being disposed on the rear portion (61) of the heat sink (6).
    [0015]
    15. Light module (2) according to claim 14, characterized in that the means for positioning the support (4) in the direction of the optical axis comprise at least one, preferably at least two lugs (44), each of the lugs (44) protruding vertically downward into a cavity (67) of the heat sink (6), said lug or each of said lugs (44) cooperating by contact with the edge of an orifice (162) in the plate (16) .
    [0016]
    16. Lighting device for a motor vehicle, comprising a housing and at least one light module, characterized in that the module or at least one of the modules is according to one of claims 1 to 15.
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR3103877A1|2021-06-04|Optical element and light module of a motor vehicle equipped with such an optical element
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    同族专利:
    公开号 | 公开日
    CN105222050A|2016-01-06|
    EP2966342A1|2016-01-13|
    MX2015008532A|2016-02-03|
    CN105222050B|2019-08-02|
    US20150377439A1|2015-12-31|
    FR3022974B1|2018-11-09|
    US10060588B2|2018-08-28|
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    法律状态:
    2015-06-30| PLFP| Fee payment|Year of fee payment: 2 |
    2016-01-01| PLSC| Search report ready|Effective date: 20160101 |
    2016-07-08| PLFP| Fee payment|Year of fee payment: 3 |
    2017-06-30| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-27| PLFP| Fee payment|Year of fee payment: 5 |
    2020-06-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-06-30| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1456227A|FR3022974B1|2014-06-30|2014-06-30|LIGHTING MODULE FOR AUTOMOTIVE PROJECTOR WITH POSITIONING BETWEEN REFLECTOR AND LENS|
    FR1456227|2014-06-30|FR1456227A| FR3022974B1|2014-06-30|2014-06-30|LIGHTING MODULE FOR AUTOMOTIVE PROJECTOR WITH POSITIONING BETWEEN REFLECTOR AND LENS|
    EP15173917.4A| EP2966342A1|2014-06-30|2015-06-25|Lighting module for a motor vehicle projector headlight with positioning means between heat sink and reflector/lens|
    US14/751,867| US10060588B2|2014-06-30|2015-06-26|Motor vehicle headlamp lighting module with mutual positioning of reflector and lens|
    MX2015008532A| MX2015008532A|2014-06-30|2015-06-29|Motor vehicle headlamp lighting module with mutual positioning of reflector and lens.|
    CN201510386332.2A| CN105222050B|2014-06-30|2015-06-30|The motor vehicle headlamp lighting module that reflector and lens are mutually located|
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