EP3502548A1 - Leuchtmodul für kraftfahrzeugscheinwerfer - Google Patents

Leuchtmodul für kraftfahrzeugscheinwerfer Download PDF

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Publication number
EP3502548A1
EP3502548A1 EP18210437.2A EP18210437A EP3502548A1 EP 3502548 A1 EP3502548 A1 EP 3502548A1 EP 18210437 A EP18210437 A EP 18210437A EP 3502548 A1 EP3502548 A1 EP 3502548A1
Authority
EP
European Patent Office
Prior art keywords
optical element
optical
light
light module
optical elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18210437.2A
Other languages
English (en)
French (fr)
Other versions
EP3502548B1 (de
Inventor
Pascal GARIN
Stephane Andre
Nicolas LALOGE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP3502548A1 publication Critical patent/EP3502548A1/de
Application granted granted Critical
Publication of EP3502548B1 publication Critical patent/EP3502548B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to the field of lighting and / or signaling devices for a motor vehicle. It relates more particularly to light modules intended to be mounted in a vehicle headlight.
  • Automotive headlamps usually consist of a housing that is closed by a transparent wall through which light rays pass.
  • This housing houses at least one light module, mainly comprising at least one light source and an optical system capable of modifying at least one parameter of the light generated by the light source for the emission of light rays that can then pass through the transparent wall of the light. projector to form regulatory light beams.
  • the evolution of the techniques tends to favor the use of light sources consisting of at least one light emitting diode or LED of the "Light Emitting Diode", because of their low energy consumption, their small size and the quality of the lighting obtained.
  • An optical system equipping a light module may comprise optical elements configured to direct the light rays towards a ray shaping lens for projecting, at the output of the module and the projector, a regulatory light beam.
  • the light sources and the corresponding optical elements may in particular be configured to generate a first light beam, said high beam, and a second light beam, said passing light.
  • light sources for example light-emitting diodes, are fixed on a support base also for the optical elements, so that the position relative to each other is reliable.
  • each of the optical elements may comprise openings formed in the thickness of the material, advantageously in end zones of these optical elements so as not to penalize the guiding of the light rays within them, and the mounting of the optical elements on the mounting bracket is made so that these openings are placed opposite bores formed on the mounting bracket to allow attachment by screwing the optical element on the mounting bracket.
  • the present invention aims to overcome at least one of the aforementioned drawbacks and to provide a light module to reduce its cost of manufacture and assembly while avoiding mechanically constrain the optical elements of such a light module.
  • the subject of the invention is a light module for a motor vehicle headlamp, comprising light sources, optical elements respectively configured to ensure the guiding of light rays emitted by a light source, and a fixing support against which optics and light sources are arranged, the optical elements comprising a first optical element associated with a first light source, a second optical element associated with a second light source and a third optical element associated with a third light source.
  • the first optical element comprises means for holding the second optical element and the third optical element on the fixing support.
  • first optical element With this first optical element, it is possible to reduce all the openings and bores formed respectively on the optical elements and on the mounting bracket for fixing the first on the latter. It will be understood that this has the effect of reducing the machining and assembly costs of such a light module. Indeed, during stages assembly, only the first optical element is fixed to the fixing support by appropriate means, such as screwing means for example.
  • assembly steps it is envisaged, for example, to position, firstly, the second optical element and the third optical element on the fixing support before coming to position, in a second step, the first optical element of so as to maintain the second optical element and the third optical element in abutment against the fixing support and to fix, in a third step, the first optical element on the fixing support.
  • the maintenance of the second optical element and the third optical element by the first optical element has the advantage of eliminating mechanical stresses by screwing on these second and third optical elements.
  • the mechanical screwing stresses of the second and third optical elements are then offset to the holding means of the first optical element.
  • the holding means of the first optical element may be configured to cover at least a portion of the second optical element and a portion of the third optical element.
  • each of the optical elements may comprise an optical guiding portion, configured for guiding the light rays emitted by the first light source and extended laterally by fins, the fins of the first optical element being configured to carry said holding means, the optical guiding portion of the first optical element being disposed between the second optical element and the third optical element.
  • the first optical element carrying the holding means has a central position makes it possible to distribute the pressure uniformly over the optical elements arranged on either side of the central optical element. It is particularly advantageous to use this solution, when the central element has a longitudinal dimension, that is to say a dimension along the optical axis, perpendicular to the fixing support, greater than that of other optical elements. .
  • the arrangement of the holding means on each side of the first optical element ensures a stable position of this central optical element and a uniform distribution of pressure forces for the position of other optical elements.
  • the first optical element can be configured to participate in the formation of a complementary beam of the beam formed by the second optical element, this beam formed by the second optical element consisting of a so-called crossing beam. It should be noted that an edge of the central optical portion of the first optical element may form a cutoff edge of the beam formed by the second optical element and its associated light source.
  • the addition of the beam formed by the second optical element and the additional beam generates the formation of a global beam of high beam type.
  • the third optical element may be configured to allow the formation of an additional beam to overcurrent the overall beam formed by the complementarity of said beam and additional beam.
  • the holding means of the first optical element may comprise, on a first face pressed against the fixing support, at least one slot sized to accommodate an end of the second or third optical element. With this or these notches formed on the first optical element, it is possible to block the second optical element and the third optical element by means of the first optical element by correctly plating them against the fixing support.
  • the holding means carried by the first optical element can both bear against the fixing support, at a first face, and against the other optical elements themselves bearing on the mounting bracket, at the notches . The pressure force is thus transmitted on the second and third optical elements to grip against the fixing support, stably, the first optical element being in plane support against the fixing support.
  • the first optical element is configured so that the optical guiding portion directs the light rays to a light module shaping lens along an optical axis, and so that the retaining means extends from one side to the other the optical guide portion perpendicular to the optical axis and along the mounting bracket.
  • the holding means may in particular comprise legs extending on either side of the lateral ends of the optical guiding portion of the first optical element to overlap on the one hand with the second optical element and on the other hand with the third optical element. .
  • Such legs make it possible to separate the optical function of the first optical element and its function of maintaining the second optical element and the third optical element.
  • the overlap of the second optical element and the third optical element by the first optical element is a partial covering which aims to maintain this second optical element and this third optical element without however preventing their optical function. It can be provided, for example, that the legs of the first optical element cover the ends of each of the second and third optical elements.
  • the holding means configured to hold the second and third optical elements comprise means for fixing the first optical element on the fixing support. Fixing the first optical element on the fixing support, for example by screwing means, makes it possible to keep the second optical element fixed and the third optical element against the fixing support. As has been previously stated, this ensures the positioning of all the optical elements with a minimum of fixing means.
  • the fixing means may be formed by a hole at one end of a leg forming part of the holding means, the hole being configured to receive a fixing screw intended to be housed in a bore formed in the fixing support.
  • the mechanical screwing force of the first element is not eliminated unlike the second optical element and third optical element.
  • the mechanical screwing effort of the first optical element is deported from its bases to the ends of its legs.
  • the legs forming part of the holding means can be grouped together by pair of legs configured to hold each end of an optical element: a first pair of legs can be associated with the second optical element and a second pair of legs can be associated with the third optical element.
  • the pairs of legs can be configured so that each leg comprises a first portion and a second portion, the second portion being consecutive to the first portion, the first portion comprising the notch of the corresponding leg arranged to receive a fin of a optical element, the second portion comprising the securing means of the corresponding leg, the second portion being oriented in a direction different from the direction of the first portion.
  • the invention is not limited to this configuration, and it may be provided that the first portion and the second portion of a leg, especially for issues of size and / or stability of the first optical element, are oriented in the same direction.
  • the means for fixing at least one leg of a pair of legs is formed opposite the notch of the corresponding leg.
  • This embodiment is intended to combine the maintenance of the second and third optical elements with the screw fixing of the first optical element.
  • the fastening means is formed by a hole, this hole is formed on the leg to pass through the corresponding notch and to be in correspondence, on the one hand, of an opening formed in the fin corresponding to the second or third optical element and, on the other hand, to a bore of the fixing support.
  • the indexing pins of the second optical element and the indexing pins of the third optical element have the advantage of allowing their respective optical element to be positioned on the fixing support so that the first optical element and the second optical element are respectively in position.
  • at least one second light source and at least one third light source are respectively in position.
  • the light module may be configured so that each optical element is disposed between a light source of each of the light beams and a shaping lens arranged at the output of the light module.
  • Each optical element may be configured to emit a light beam towards the shaping lens arranged at the output of the light module.
  • first light flow corresponds to the configuration of a motor vehicle in the high beam position
  • second luminous flow called crossing corresponds to the configuration of a motor vehicle in the low beam position.
  • the subject of the invention is a motor vehicle headlamp comprising at least one light module as previously described.
  • the figure 1 illustrates a light module 1 according to the invention, otherwise called optical module, whose function is to generate and project one or more light beams on a road.
  • a light module 1 is intended to be installed in a headlight of a motor vehicle not shown in the figures to facilitate understanding of the invention.
  • the projector mentioned here generally comprises a rear housing closed at the front by a transparent glass, the latter being traversed by the light rays created by the light module according to the invention.
  • Such a projector can thus receive in its interior volume, delimited by the rear housing and the transparent glass, a plurality of light module, and at least one light module according to the invention.
  • Such a light module 1 forms a unitary subassembly, that is to say an object that can perform its function without other input than the electrical energy necessary for its ignition.
  • the light module 1 is arranged to create a beam of low beam and a beam of high beam, one after the other or both simultaneously.
  • the light module 1 is adapted so that the road beam is the combination of the beam of crossing light with a complementary beam.
  • the light module 1 comprises at least a plurality of light sources and a plurality of associated optical elements. It also comprises at least one lens 100 arranged at one end of the module so as to be traversed by the light rays emitted by the light sources and guided by the optical elements.
  • a shaping lens 100 contributes to the formation of the desired light beam, whether it is a beam type dipped beam or a beam-type driving beam. In other words, the shaping lens 100 forms a first longitudinal end of the light module 1.
  • the figure 1 also shows the presence of a casing 102 which has a substantially tubular shape and which extends between a base forming a fixing support 5 and the shaping lens, such a casing ensuring in particular the mechanical support of the setting lens. form, as well as a mechanical referencing of the position of the lens with respect to the light sources and the optical elements, so as to guarantee a determined position of the shaping lens with respect to the light sources.
  • a casing 102 which has a substantially tubular shape and which extends between a base forming a fixing support 5 and the shaping lens, such a casing ensuring in particular the mechanical support of the setting lens. form, as well as a mechanical referencing of the position of the lens with respect to the light sources and the optical elements, so as to guarantee a determined position of the shaping lens with respect to the light sources.
  • the fixing support 5 may have on its face opposite to the housing 102 a heat dissipating member 104 for discharging from the light module 1 at least a portion of the heat generated by the light sources.
  • the figure 2 shows a part of the light module 1, and in particular the fixing support 5 without the housing 102, so as to facilitate understanding of the arrangement in the light module 1 of the optical elements associated with light sources here not visible.
  • these optical elements are fixed on the fixing support so that one of the optical elements comprises means for holding the other optical elements, so that it is not necessary to provide means for specific attachment of these other optical elements to the mounting bracket.
  • a light module equipped with three optical elements respectively facing a light source and a first optical element will be described as configured to allow the recovery and fixing of the other two elements. optical, but it will be understood that a light module would be in accordance with the invention since it allows the plating against the fixing support, and thus the holding in position, of a plurality of optical elements by another optical element .
  • the light module 1 comprises a first optical element 2 configured to ensure the guiding of light rays emitted by a first light source 202, a second optical element 3 configured to ensure the guiding of light rays emitted by a second light source, here not visible, and a third optical element 4 configured for guiding light rays emitted by a third light source, here not visible.
  • a light source comprises one or more light sources forming a controlled subassembly for emitting light rays configured to perform an optical function. More specifically, the first light source 200, or a first subset of light sources, is associated with the first optical element 2 to generate a first light beam, and the second light source, or a second subset of light sources. , is associated with the second optical element 3 to generate a second light beam.
  • This second light beam corresponds to a beam of the dipped beam type, having a cutoff edge here formed by the edge 200 of the free end face 201 of the first optical element 2 which is located on the side of the second optical element.
  • the first light beam coming out of this end face free of the first optical element thus has a form of complementary beam of the second light beam, so that the simultaneous emission of rays by the first and the second source participates in forming a global beam-type beam.
  • the third light source or third subset of light sources, is associated with the third optical element 4 to generate light rays capable of overcurrenting the center of the overall beam of high beam type.
  • Each of the optical elements has a general shape having a central optical portion, forming optical guide portion, and lateral fins, arranged laterally on either side of the central optical portion.
  • the first optical element 2 comprises a first optical guiding portion 20 extended at its lateral ends by first fins 21
  • the second optical element 3 comprises a second optical guiding portion 30 extended at its lateral ends by second fins 31
  • the third optical element 4 comprises a third optical guiding portion 40 extended at its ends by third fins 41.
  • optical elements 2, 3, 4 are provided to be arranged on a fixing support 5, and more particularly on a first face 50 of the fixing support.
  • the first optical element 2 is disposed on the fixing support 5 between the second and third optical elements 3, 4.
  • one of the optical elements 2, and in particular the first optical element in the examples which follow comprises means 6 for holding the other optical elements 3, 4 against the fixing support 5, and in particular against the first face 50 of the fixing support.
  • the presence of these holding means 6 is intended to maintain a plurality of optical elements 3, 4 against the fixing support 5 without exerting mechanical force by screwing directly on these optical elements.
  • the holding means 6 of the first optical element 2 are arranged at the level of the first fins 21 of the first optical element and they are configured to overlap the ends of the other optical elements.
  • the assembly of such a light module comprises a first step in which optical elements 3, 4 are arranged on the fixing support 5, respectively in view of the light source to which they correspond to generate a suitable light beam in the direction of the ray shaping lens of the module.
  • the first optical element 2 comprising the holding means 6 is disposed on the fixing support 5, against the first face 50 of the latter, so as to cover the ends of the optical elements 3, 4 already in position. place, before being fixed by screwing on the mounting bracket 5 with a fastening means 7, the screw type clamping.
  • the holding means 6 of the first optical element 2 are arranged around the optical guiding portions 20, 30, 40 of the optical elements 2, 3, 4 so that it does not penalize the production of the optical function, that is to say the guidance of the rays emitted by the sources towards the forming lens 100 of the rays at the output of the light module 1.
  • the first optical element 2 is disposed on the fixing support 5 between the second and third optical elements 3, 4, so that the central optical element, namely the first one, is used. optical element 2, to ensure the maintenance of the other optical elements 3, 4. It is understood that this embodiment allows a distribution of substantially equal holding forces between each of the optical elements held by the central optical element.
  • the first optical element 2 comprises holding means 6 of the second optical element 3 and the third optical element 4 on the fixing support 5. More particularly, the holding means 6 of the first optical element 2 are formed by at least two legs, here four in number, 60,61,62,63 which extend one of the first fins 21 to overlap the second and third fins 31, 41 of the second and third optical elements 3, 4. As illustrated, such an overlap of the ends of the second optical element 3 and those of the third optical element 4 does not prevent the optical guide portions 30, 40 from performing their optical functions.
  • the legs 60, 61, 62, 63 make it possible to separate the optical function of the first optical element 2 and its function of holding the second optical element 3 and the third optical element 4.
  • the figures 3 and 4 represent the optical elements 2, 3, 4, as they are arranged when they are assembled on the fixing support 5.
  • the various optical elements are configured to guide light rays in the direction of the ray shaping lens, not visible in these figures, mainly along an optical axis A represented in FIG. figure 3 .
  • the legs 60, 61, 62, 63 forming part of the holding means 6 of the first optical element 2 extend perpendicularly to the optical axis A, so as to run along the fixing support 5 and pressing against it the second and third optical elements 3, 4.
  • the legs 60,61,62,63 extend from the fins 21 extending the first optical element 2 perpendicular to the optical axis A and in the direction defined by the series of arrangement of the optical elements. In this way, at least one leg extends along the fixation support from the first optical element to a second optical element and at least one leg extends along the fixation support from this first optical element to a third element optical.
  • the holding means 6 configured to hold the second and third optical elements, here formed by the legs 60, 61, 62, 63, are furthermore configured to allow the first optical element to be held on the fixing support, via 7.
  • the fastening means 7 comprises a hole 70 arranged at one end of a leg, the hole being configured to receive a fixing screw 71 intended to be housed in a bore. formed in the mounting bracket.
  • each leg comprises a first portion 60A, 62A and a second portion 60B, 62B, the first portion being disposed in the direct extension of the fin 21 of the first optical element 2 and the second portion being configured to extend the first portion beyond the other optical element that this leg participates to maintain against the mounting bracket.
  • the second portion comprises the hole 70 forming part of the attachment means of the first optical element, and this second portion is here oriented in a direction different from the direction of the first portion. It will be understood that the orientation of the second portion takes into account the size of the light module and the space available on the mounting bracket, as well as the stability to be given to the first optical element.
  • Fixing the first optical element on the fixing support for example by screwing means, makes it possible to hold the second optical element fixed and the third optical element against the mounting bracket. As has been previously stated, this ensures the positioning of all the optical elements with a minimum of fixing means.
  • Each of the optical elements is formed in one piece. More particularly, the body forming the first optical guiding portion 20, the fins 21 and the legs 60,61,62,63 are formed in the same holding, in a one-piece assembly. In this way, placing the legs against the mounting bracket generates the positioning of the first optical guide portion 20 relative to the mounting bracket and with respect to the light sources carried by the mounting bracket.
  • the legs 60,61,62,63 of the first optical element 2 may be overmolded on the fins 21 arranged on either side of the optical guiding portion 20 of the first optical element 2
  • This overmolding makes it possible to reduce the manufacturing costs of the first optical element 2 by using a plastic material different from that used to produce the optical guiding portion 20.
  • a plastic material different from that used to produce the optical guiding portion 20.
  • at least the optical guiding portion of the first optical element 2 is made of polycarbonate (PC).
  • PC polycarbonate
  • Such a plastic material has the advantage of having transparency properties with a good refractive index, and a temperature-appropriate resistance.
  • the fins 21, 31, 41 of the optical elements 2, 3, 4 are configured to allow the cooperation of the holding means 6 and the ends of the second and third optical elements as will be described below, and to allow the optical guide portions 20, 30, 40 of these optical elements to be disengaged longitudinally with respect to the plane of the mounting bracket to make room for the light sources themselves pressed against the mounting bracket.
  • a longitudinal offset is thus required between the fins and the optical guide portion of each optical element.
  • the fins of each optical element 2, 3, 4 are formed by a first portion 21A, 31A, 41A, arranged in direct extension of the corresponding lateral end of the optical guiding portion 20, 30, 40, and by a second portion 21B, 31B, 41B intended to be pressed against the fixing support 5.
  • the first portion 21A, 31A, 41A extends longitudinally, substantially parallel to the optical axis of the light module and therefore perpendicular to the fixing support, so that it is the length of this first portion which determines the spacing of the guiding part of the optical elements with respect to the fixing support to make room for light sources.
  • the second portion 21B, 31B, 41B perpendicularly extends the first portion 21A, 31A, 41A to form a bearing surface parallel to the plane defining mainly the mounting bracket.
  • the legs 60, 61, 62, 63 extend more particularly from the second portion 21B of the fin 21 of the first optical element 2, so as to overlap the second portions 31B and 41B of the other optical elements.
  • a first pair of legs 60, 61 formed by a first leg 60 and a second leg 61, is associated with the second optical element 3 and a second pair of legs 62, 63, formed by a third leg 62 and a fourth leg 63 is associated with the third optical element 4.
  • the first leg 60 and the second leg 61 are arranged to face each other so as to cover the ends of the second optical element 3, while the third leg 62 and the fourth leg 63 are arranged to be facing each other so as to cover the ends of the third optical element 4.
  • the legs 60, 61 of the first pair of legs are identical to each other and the legs 62, 63 of the second pair of legs are also identical to each other, however being distinct legs of the first pair of legs. It is understood that this is specific to the illustrated embodiment in which the second and third optical elements 3, 4 are of different shapes, but the leg pairs could be the same if the optical elements were to have different shapes and dimensions.
  • the legs 60, 61, 62, 63 each comprise a first face 601, intended to be pressed against the fixing support. On this first face, the legs have notches 64, 65 sized to respectively receive a fin 31, 41 of the other optical elements 3, 4 disposed on either side of the first optical element 2. These notches consist of a zone of less thickness formed from the inner edge 602 of the legs forming the holding means 6 integral with the first optical element, the inner edge 602 being that turned towards the optical guide portion. The notches can be obtained by machining the first face 601, or else formed during a molding operation of the first optical element.
  • the second fins 31 formed at the lateral ends of the second optical element 3 are intended to be housed in a pair of first notches 64 arranged respectively on one of the legs of a first pair of legs 60, 61.
  • the third fins 41 shapes at the ends of the third optical element 4 are housed in second notches 65 arranged respectively on one of the legs of a second pair of legs 62, 63.
  • the thickness of the fins 31, 41 of the second and third optical elements is substantially equal to the depth of the notches 64, 65, the thickness and the depth being measured, when the optical elements are assembled on the fixing support, in one direction. perpendicular to the plane in which this fixing support extends. In this way, when the optical elements are assembled on the fixing support 5, the positioning of the fins in the notches does not prevent the fact that the first face 601 of the legs of the first optical element, which is arranged on the mounting bracket after the other optical elements, is pressed against the mounting bracket 5.
  • This first face comprises indexing pins 21C arranged in projection of the fins 21, and configured to be in correspondence of shape and dimensions with orifices formed in the fixing support 5 and here not visible.
  • each of the fins 31, 41 of the other optical elements comprises an indexing pin 31C, 41C, turned on the side of the first face 601 of the holding means when the optical elements are assembled against the fixing support, and configured to correspond to an orifice formed in the mounting bracket. Thanks to these pins, it is possible to pre-position each optical element 2, 3, 4 on the fixing support 5 before the final fixing by means of the fixing means 7.
  • each optical element 2, 3 , 4 is well positioned with respect to the fixing support 5 and with respect to the light sources previously made integral with the fixing support, in particular by gluing on a printed circuit board secured to this fixing support and not shown here. It is understood that this allows, for each optical element 2, 3, 4, to align the optical guiding portion 20, 30, 40 with a light source, or a subset of light sources, corresponding.
  • the indexing pins 21C, 31C, 41C are formed on the second portions of the fins 21, 31, 41.
  • the optical elements 2, 3 , 4 are easily arranged on the fixing support 5, by contacting the second portions of the fins 21, 31, 41 against this fixing support, it being understood that the second and third optical elements are arranged beforehand to allow the covering their ends by the holding means formed by the first optical element 2.
  • the indexing pin 31C is arranged in a portion of the fin of a second and / or third optical element which is subsequently covered by one of the legs of the first optical element. This makes the assembly more compact since the means performing the pre-positioning function and those performing the overlap fastening function are stacked on top of one another.
  • the indexing pins 21C, 31C, 41C of the optical elements 2, 3, 4 make it possible, on the one hand, to individually position each of the optical elements 2, 3, 4 in the desired optical configuration, and on the other hand, to positioning the optical elements 2, 3, 4 relative to each other so as to allow the complementarity of the optical functions that they provide, and in particular so as to generate, alternatively, a first luminous flow, said of road, and a second luminous flux, said of crossing.
  • indexing pins 21C, 31C, 41C make it possible to block their respective optical element 2, 3, 4 in a direction perpendicular to the optical axis A, whereas the legs 60, 61, 62, 63 of the first element 2 optic block the second and third optical elements 3, 4 in a direction parallel to the optical axis A, the first optical element 2 being fixed on the fastening support 5 by screwing.
  • the fixing means 7 of the legs 60,61,62,63 can be arranged in the vicinity of the notches. More particularly, there is illustrated a first variant for fixing the second optical element and a second variant for fixing the third optical element.
  • the first optical element comprises holding means configured to fix the other optical elements against the fixing support.
  • the fixing means is arranged in the lateral extension of the notch of the corresponding leg, in which is intended to be housed, as before, an end of an optical element.
  • the guide portion of the optical element, a fin and a hole forming part of the fastening means are thus arranged in line successively.
  • the fixing means for fixing the first optical element on the support are dissociated from the receiving notches of the other optical elements, so that the other optical elements are not maintained only by the pressure force exerted by the legs of the first optical element, and therefore without the need to specifically machine the third optical element and to risk impairing its optical performance.
  • the fixing means is arranged through a notch.
  • the hole is formed on the leg 60,61,62,63 to cross the corresponding notch and to be in correspondence, on the one hand, of an opening formed in the corresponding fin 31, 41 of the second or third optical element 3, 4 and, secondly, a bore of the mounting bracket 5.
  • This embodiment provides a more compact assembly in that the leg does not have to be extended beyond the notch for providing a receiving space of the fastening means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP18210437.2A 2017-12-22 2018-12-05 Leuchtmodul für kraftfahrzeugscheinwerfer Active EP3502548B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1762902A FR3075928B1 (fr) 2017-12-22 2017-12-22 Module lumineux pour projecteur de vehicule

Publications (2)

Publication Number Publication Date
EP3502548A1 true EP3502548A1 (de) 2019-06-26
EP3502548B1 EP3502548B1 (de) 2020-11-18

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EP18210437.2A Active EP3502548B1 (de) 2017-12-22 2018-12-05 Leuchtmodul für kraftfahrzeugscheinwerfer

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Country Link
US (1) US10683980B2 (de)
EP (1) EP3502548B1 (de)
CN (1) CN109973929B (de)
FR (1) FR3075928B1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3971469A1 (de) * 2020-09-22 2022-03-23 Varroc Engineering Limited Scheinwerferanordnung für fahrzeuge

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FR2814221A1 (fr) * 2000-09-18 2002-03-22 Koito Mfg Co Ltd Lampe de vehicule a source lumineuse et panneau translucide
CN203131661U (zh) * 2013-03-14 2013-08-14 广东骑光车灯工业有限公司 一种组合式光学透镜led摩托车前照灯
US20150323147A1 (en) * 2014-05-09 2015-11-12 Panasonic Intellectual Property Management Co., Ltd. Lighting apparatus and automobile including the same
FR3030684A1 (fr) * 2014-12-19 2016-06-24 Valeo Vision Dispositif lumineux comprenant des sources surfaciques de lumiere
EP3159599A1 (de) * 2015-10-23 2017-04-26 Valeo Vision Leuchtvorrichtung mit optischen wellenleitern

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CZ306406B6 (cs) * 2013-01-16 2017-01-11 Varroc Lighting Systems, s.r.o. Spojovací systém dílů světel, zejména světel automobilu
JP6142463B2 (ja) * 2013-02-22 2017-06-07 スタンレー電気株式会社 車両用前照灯及び投影レンズ
DE102013207850A1 (de) * 2013-04-29 2014-10-30 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer
US9327636B2 (en) * 2013-08-16 2016-05-03 Coplus Inc. Vehicle light apparatus
AT514705B1 (de) * 2013-10-28 2015-03-15 Zizala Lichtsysteme Gmbh Halterungsvorrichtung für einen Optikkörper für einen Kraftfahrzeugscheinwerfer

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Publication number Priority date Publication date Assignee Title
FR2814221A1 (fr) * 2000-09-18 2002-03-22 Koito Mfg Co Ltd Lampe de vehicule a source lumineuse et panneau translucide
CN203131661U (zh) * 2013-03-14 2013-08-14 广东骑光车灯工业有限公司 一种组合式光学透镜led摩托车前照灯
US20150323147A1 (en) * 2014-05-09 2015-11-12 Panasonic Intellectual Property Management Co., Ltd. Lighting apparatus and automobile including the same
FR3030684A1 (fr) * 2014-12-19 2016-06-24 Valeo Vision Dispositif lumineux comprenant des sources surfaciques de lumiere
EP3159599A1 (de) * 2015-10-23 2017-04-26 Valeo Vision Leuchtvorrichtung mit optischen wellenleitern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3971469A1 (de) * 2020-09-22 2022-03-23 Varroc Engineering Limited Scheinwerferanordnung für fahrzeuge

Also Published As

Publication number Publication date
CN109973929B (zh) 2021-05-18
FR3075928A1 (fr) 2019-06-28
US20190195449A1 (en) 2019-06-27
CN109973929A (zh) 2019-07-05
EP3502548B1 (de) 2020-11-18
FR3075928B1 (fr) 2021-06-25
US10683980B2 (en) 2020-06-16

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