• 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 lighting module (2) in particular for a motor vehicle, comprising at least one light source, a plate (16) supplying the light source or sources, a heat sink (6) supporting the plate (16) and capable of dissipating the heat produced by said source or sources, a reflective surface (10) able to reflect the rays of the light source or sources in order to form a light beam along an optical axis of the module, and a support ( 4) of the reflecting surface (10) on the heat sink (6), the support (4) comprising positioning means (45) cooperating with the plate (16). These positioning means consist of two lugs (45) directed downwards and cooperating in abutment with corresponding orifices (162) in the plate (16).
    公开号:FR3022976A1
    申请号:FR1456233
    申请日:2014-06-30
    公开日:2016-01-01
    发明作者:Mehdi Madelaine
    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. But the light source fails to be part of the elements that are directly positioned relative to each other by the main room. This means that particular care must be taken when positioning it on the radiator and this essentially with respect to the reference areas of the radiator for the main room. 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 promote the assembly of a lighting module for the sake of accurate and easy relative positioning between the various constituent elements of the module in question, more particularly between the optical surfaces such as the reflective surfaces and the light source (s).
    [0002] 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 turntable for supplying power to the light source (s); a heat sink supporting the plate and able to dissipate the heat produced by the light source or sources; a reflective surface capable of reflecting the rays of the light source or sources in order to form a light beam along an optical axis of the module; a support of the reflective surface on the heat sink; remarkable in that the support comprises positioning means cooperating with the plate. Advantageously, the reflecting surface forms a half-shell and is preferably a surface of revolution. The profile of the reflecting surface can be elliptical. The reflective surface may be formed on a cavity of the support, for example by metallization of this cavity. If necessary, the reflective surface and the support form a single piece.
    [0003] Advantageously, the light source or sources are semiconductor emitter chips, of the electroluminescence diode type. Advantageously, the plate comprises a circuit board, preferably with a connector, said circuit being connected to the light source or sources for their power supply. The light source (s) may be mounted on the printed circuit board. Alternatively, the light source or sources are mounted directly on the heat sink, the light source or sources being electrically connected to the printed circuit board, for example by bridging. If desired, the printed circuit board can support a connector for the power supply of the light source.
    [0004] According to an advantageous embodiment of the invention, the means for positioning the support are stop means in the direction of the optical axis of the module. According to an advantageous embodiment of the invention, the positioning means are arranged laterally on either side of the optical axis. Advantageously, the plate extends between the heat sink and the support.
    [0005] Still advantageously, the support is in contact with the plate. According to an advantageous embodiment of the invention, the positioning means comprise at least one, preferably two lugs, each lug protruding from the support towards a cavity in the heat sink and passing through a hole in the plate.
    [0006] According to an advantageous embodiment of the invention, the or at least one of the holes of the plate traversed (s) by the lug or pins is oblong in the direction of the optical axis. According to an advantageous embodiment of the invention, the lug or each of the lugs is configured to come into contact with a portion of the edge of the hole of the plate through which it passes for the positioning of the reflecting surface with respect to the source or sources. bright. According to an advantageous embodiment of the invention, the cavity or each of the cavities is forward in the direction of the optical axis relative to the contact portion of the edge of the hole.
    [0007] According to an advantageous embodiment of the invention, the plate extends transversely, on either side of the optical axis, beyond the reflecting surface. According to an advantageous embodiment of the invention, the support comprises one or more generally flat surface portions in contact with the plate, the positioning means being located on this portion or these surface portions.
    [0008] According to an advantageous embodiment of the invention, the or each of the contact surface portions of the support comprises a hole, preferably oblong in the direction of the optical axis, providing a clearance space for a plate fixing means, such as that a screw.
    [0009] According to an advantageous embodiment of the invention, the or each of the contact surface portions of the support comprises a hole, preferably oblong in the direction of the optical axis, traversed by a pin of the heat sink serving as positioning means for the plate compared to the heatsink. Advantageously, the pins of the heat sink have a generally conical profile and the plate comprises orifices adapted to cooperate with said pins with a radial clearance less than 0.5 mm, preferably less than 0.2 mm, more preferably less than 0.1 mm. The game can be zero. According to an advantageous embodiment of the invention, the heat sink comprises a rear portion supporting the plate and a front portion downwardly of the rear portion, the front portion supporting a lens configured to deflect the rays emitted by the source or sources bright. The lens can be configured to form a regulatory beam from a photometry point of view. According to an advantageous embodiment of the invention, the module comprises means for fixing between the lens and the heat sink, and in that the support cooperates by engagement with the lens. According to an advantageous embodiment of the invention, the heat sink has a staircase profile, the front portion forming a first step of said staircase and the rear portion forming a second mark, higher, said staircase. According to an advantageous embodiment of the invention, the support extends along the respective upper surfaces of 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 support comprises at least one opening for holding the lens on the support.
    [0010] According to an advantageous embodiment of the invention, the support, including its positioning means, is in one piece, preferably made of plastic. According to an advantageous embodiment of the invention, the reflecting surface has a generally elliptical profile with a first focus and a second focus, the light source (s) being at the first focus, and the module comprises a second reflecting surface, called a bending surface, with a beam cutting edge at the second focus, said folder being fixed to the support and bearing on the heat sink. The invention also relates to a light device for a motor vehicle, 10 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 precise relative positioning between the reflecting surface and the light source or sources. In addition, they allow precise positioning of the light source (s), via their plate, with respect to the heat sink. Other features and advantages of the present invention will be better understood from the description and drawings in which: FIG. 1 is a perspective view of an automotive headlamp illumination 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 opposite to that of FIG. 8. FIG. 1 is a perspective representation of a module of FIG. 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.
    [0011] 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.
    [0012] 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 the optical axis of the module. This axis also essentially corresponds to the longitudinal axis of the module. 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. 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. 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. 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.
    [0013] As can be seen in FIG. 2, the rear portion 61 may comprise one or more pins, in this case two pins 63 intended to pass through corresponding orifices 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 platen 16. 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, the occurrence 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. It can observe in Figure 4 that the lens 8 comprises two fastening tabs 81 extending from a lower edge to the tabs 64 of the radiator 6. More specifically, these tabs 81 extend through openings 24 in the front portion 43 of support 4. These tabs 81 may include 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, bearing on the bosses 63 and, on its upper face, bearing 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 legs 64 of the radiator 6 and the orifices or cavities of the fixing 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.
    [0014] 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 observed that the folder, more precisely its central and optically active portion 141 is resting on a rib 66 of the radiator, which will be further detailed in relation to FIGS. 5 and 6. FIG. 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 reflective central portion 141, is parallel to the upper surface of the rear portion 61 of the radiator 6. misalignment of the reflective surface of the folder 14 is capable of significantly modifying the photometry of the light beam of the module. It is therefore important to be able to accurately 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 vertical and rotational positioning about a transverse axis of the folder 14. They also prevent light leakage between the lower face 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. Fixing screws 20 and 22 of the plate supporting the light source and the support are shown in Figure 5. Figure 6 is a cross-sectional view of the module of Figure 1, the section being at the level of the folder 14. This view illustrates the mode of attachment and positioning of the folder 14. It 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 orifices in the support 4. These arms 142 can to this end comprise 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 Figures 5 and 6 are preferably integral with the radiator 6. The latter is preferably made of metal or plastic material capable of being molded, such as 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. 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.
    [0015] 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. 12
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Light module (2), in particular lighting and / or signaling, for a motor vehicle, comprising: - at least one light source (12); - a plate (16) for supplying a power supply to the light source or sources (12); a heat sink (6) supporting the plate (16) and able to dissipate the heat produced by the light source (s) (12); a reflecting surface (10) adapted to reflect the rays of the one or more light sources (12) to form a light beam along an optical axis of the module; a support (4) of the reflecting surface (10) on the heat sink (6); characterized in that the support (4) comprises positioning means (44) cooperating with the plate (16).
    [0002]
    2. Module (2) according to claim 1, characterized in that the positioning means (44) of the support (4) are stop means in the direction of the optical axis of the module.
    [0003]
    3. Module (2) according to one of claims 1 to 2, characterized in that the positioning means comprise at least one, preferably two lugs (44), each lug protruding from the support (4) to a cavity (67). ) in the heat sink (6) and passing through a hole (162) of the plate (16).
    [0004]
    4. Module (2) according to claim 3, characterized in that the or at least one of the holes (162) of the plate (16) traversed (s) by the lug (s) (44) is oblong in the direction of the optical axis.
    [0005]
    5. Module (2) according to one of claims 3 and 4, characterized in that the lug or each of the lugs (44) is configured to come into contact with a portion of the edge of the hole (162) of the plate ( 16) that it passes for the positioning of the reflective surface (10) with respect to the light source (s) (12).
    [0006]
    6. Module (2) according to one of claims 1 to 5, characterized in that the plate (16) extends transversely, on either side of the optical axis, beyond the reflective surface. (10).
    [0007]
    7. Module (2) according to claim 6, characterized in that the support (4) comprises one or more generally planar surface portions (41) in contact with the plate (16), the positioning means (44) being located on that portion or these surface portions (41). 10
    [0008]
    8. Module (2) according to claim 7, characterized in that the or each of the contact surface portions (41) of the support (4) comprises at least one hole (45), preferably oblong in the direction of the axis optical, providing a clearance space for a fastening means (22) of the plate (16), such as a screw. 15
    [0009]
    9. Module (2) according to one of claims 7 and 8, characterized in that the or each of the contact surface portions (41) of the support (4) comprises a hole (46), preferably oblong in the direction of the optical axis, traversed by a pin (65) of the heat sink (6) serving as a positioning means of the plate (16) relative to the heat sink (6). 20
    [0010]
    10. Module (2) according to one of claims 1 to 9, characterized in that the heat sink (6) comprises a rear portion (61) supporting the plate (16) and a front portion (62) against low the rear portion (61), the front portion (62) supporting a lens (8) configured to deflect the rays emitted by the light source (s) (12). 25
    [0011]
    11. Module (2) according to claim 10, characterized in that it comprises fixing means (64, 81) between the lens (8) and the heat sink (6), and in that the support (4) cooperates by engagement (24) with the lens (8).
    [0012]
    12. Module (2) according to one of claims 10 and 11, characterized in that the support (4) has an opening (24) for holding the lens (8) on the support. 14 302 2 9 76
    [0013]
    13. Module (2) according to one of claims 1 to 12, characterized in that the support (4), including its positioning means (44), is in one piece, preferably made of plastic.
    [0014]
    14.Module (2) according to one of claims 1 to 13, characterized in that the reflective surface (10) has a generally elliptical profile with a first focus and a second focus, the light source (s) (12) being at the first focus, and in that it comprises a second reflective surface, so-called bender (14), with a cutting edge of the beam at the second focus, said bender (14) being fixed to the support (4) and taking 10 support on the heat sink (6).
    [0015]
    15. Luminaire 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 (2) is in accordance with one of claims 1 to 14.
    类似技术:
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    FR3064721B1|2019-10-11|LUMINOUS DEVICE WITH RADIATOR CROSSING THE HOUSING
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    同族专利:
    公开号 | 公开日
    EP2966343A1|2016-01-13|
    FR3022976B1|2018-08-31|
    EP2966343B1|2021-07-07|
    引用文献:
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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 |
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    优先权:
    申请号 | 申请日 | 专利标题
    FR1456233A|FR3022976B1|2014-06-30|2014-06-30|LIGHT MODULE FOR AUTOMOTIVE PROJECTOR WITH POSITIONING BETWEEN REFLECTOR AND LIGHT SOURCE|
    FR1456233|2014-06-30|FR1456233A| FR3022976B1|2014-06-30|2014-06-30|LIGHT MODULE FOR AUTOMOTIVE PROJECTOR WITH POSITIONING BETWEEN REFLECTOR AND LIGHT SOURCE|
    EP15174168.3A| EP2966343B1|2014-06-30|2015-06-26|Lighting module for a motor vehicle headlight with positioning means between heat sink and reflector/circuit board|
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