EP3115683A1 - Leuchtmodul zur beleuchtung und/oder signalisierung für kraftfahrzeug - Google Patents

Leuchtmodul zur beleuchtung und/oder signalisierung für kraftfahrzeug Download PDF

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Publication number
EP3115683A1
EP3115683A1 EP16177276.9A EP16177276A EP3115683A1 EP 3115683 A1 EP3115683 A1 EP 3115683A1 EP 16177276 A EP16177276 A EP 16177276A EP 3115683 A1 EP3115683 A1 EP 3115683A1
Authority
EP
European Patent Office
Prior art keywords
light
light module
face
module according
wall
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.)
Pending
Application number
EP16177276.9A
Other languages
English (en)
French (fr)
Inventor
Kostadin BEEV
Antoine De Lamberterie
Marine Courcier
Delphine Puech
Jean-Luc Meyrenaud
Christophe Duval
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 EP3115683A1 publication Critical patent/EP3115683A1/de
Pending legal-status Critical Current

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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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled 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
    • F21S41/14—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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21S41/40—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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • 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
    • F21S41/47—Attachment thereof
    • 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
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/14—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
    • F21W2102/145—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam

Definitions

  • the invention relates to the field of lighting and / or signaling, especially for motor vehicles. More particularly, the invention relates to a lighting and / or signaling module for a motor vehicle.
  • a motor vehicle is equipped with headlamps, or headlights, intended to illuminate the road in front of the vehicle, at night or in the case of reduced luminosity.
  • headlamps can generally be used in two lighting modes: a first mode “high beam” and a second mode “low beam”.
  • the "high beam” mode provides strong illumination of the road far ahead of the vehicle.
  • the “low beam” mode provides more limited road lighting, but still offers good visibility without dazzling other road users.
  • These two modes of lighting are complementary, and one passes from one to the other according to the traffic conditions. The switching from one mode to another can be done manually, the driver deciding the moment of this switching, or it can be done automatically, depending on the detection by appropriate means of the conditions required for such a change of mode. 'lighting.
  • a light module integrates a movable mechanical element, designed to participate in the formation of such or such beam at the request of the driver or the driver. associated control system.
  • the document DE 10 2006 042 749 discloses a vehicle headlighting device comprising an LED light source, an elliptical reflector in a half-space with two foci.
  • the LED source is placed at the first focus of the reflector near the reflector.
  • the light emitted by the LED source is reflected by the reflector towards its second focus where a so-called folding reflective surface is positioned.
  • This reflecting surface has an edge on the reflector side and an edge on the opposite side of the reflector. These edges are called “cut edges”.
  • a portion of the light beam reflected by the reflector encounters the reflecting surface and is reflected in accordance with its angle of incidence on the surface. Another part of the light beam passes over the cutoff edge (s) and is not deflected by the reflecting surface. The edge cutoff thus defines a boundary between the part of the beam reflected and thus deviated and the non-reflected part.
  • a lens is positioned behind the reflective surface so that its focus corresponds to that of the elliptical reflector.
  • the reflective surface with its cutoff edge (s) is called a folder because it deflects or "bends" part of the bundle to form a cutoff at the beam emitted by the lens.
  • the folder is movable along an axis parallel to the optical axis of the reflector. This mobility ensures the function "road” or "High Beam” and the function "code” or “Low Beam". It can be understood that projectors of this type involve a mechanics internal to the module which requires great precision and which induces a high manufacturing cost.
  • ADB Adaptive Driving Beam in English
  • Selective beam Such an ADB function is intended to automatically detect a user of the road likely to be dazzled by a beam of light emitted in headlight mode by a projector, and to modify the outline of this beam of light in a manner to create a shadow zone at the location of the detected user.
  • the advantages of the ADB function are multiple: comfort of use, better visibility compared to a lighting in dipped beam mode, better reliability for the change of mode, risk of dazzling greatly reduced, driving safer.
  • the invention is part of this dual context of a presence of a "selective beam” function on the one hand, and a complementarity of "low beam” and “high beam” modes of operation on the other hand , the object of the invention is to propose an optical device which improves the existing devices, at least as regards the ease of assembly, the cost and the bulk, the efficiency in the time, and offers lighting and / or signaling functions at least as powerful as before.
  • the invention therefore relates to a light module for lighting and / or signaling of a motor vehicle, as well as a lighting device and a projector for a motor vehicle comprising such a light module, in which first means are arranged to produce a first cut-off beam and second means are arranged to produce at least two selectively activatable light segments.
  • the light segments form a second complementary beam to the first cut-off beam when they are simultaneously activated.
  • the light module is thus able to produce either a passing beam from the first cut-off beam generated by the first means, or a high beam coming jointly from the first cut-off beam and the second beam generated by the second means.
  • a high beam may be selective depending on the needs, by activation and extinction of the different light sources in plurality that comprise the second means.
  • the cut-off member is integrated with an optical guide that includes the second means and from which the light segments are derived to form the second complementary beam, thus limiting the space requirement which may disturb the escape of the light segments forming the second beam. It is more specifically provided by the present invention to provide a reflecting surface on the surface of a wall of the light guiding members of the optical guide to form the cutoff member.
  • the guide members may incorporate a cutoff wall provided with a reflecting face disposed opposite the first means and which forms a cover forming at least a portion of the cutoff of the first beam.
  • second beam complementary to the first cut-off beam is meant in particular a second beam which extends mainly above the cut of the first beam, with the cut of the first beam which is an upper cut for example cross type , and the second beam that has a lower cutoff. It can be provided that the lower cutoff is superimposed on the upper break so that the second bundle is joined to the first bundle, or provide that the lower cutoff of the second bundle extends below the upper cutoff of the first bundle of bundle. so that a lower portion of the second beam covers an upper portion of the first beam.
  • an immovable implantation of a member for producing the cut-off with a reflective surface placing it on the surface of optical guides that comprise the second means, and a simplification of the structure of the light module both with regard to the number of pieces mechanical that it comprises that the terms of implantation of these mechanical parts, including the cache realizing the cutting of the first beam. And it is ensured that there is no escaping light segments between the output edge of the guide members and the cover.
  • the module comprises general means for controlling the implementation of the first cut-off beam and / or the second complementary beam.
  • the first beam may advantageously constitute a code-type beam
  • the combination of the second beam and the first beam may advantageously be constitutive of a road-type beam.
  • the cutoff wall is for example arranged in a plate integrated with the guide members. It can also be provided that all the guide members and the cutoff wall advantageously form a one-piece assembly. It is considered that the guide members and the cutoff wall are monobloc as soon as their separation causes destruction of one of the guides or the cutoff wall. It is understood in this case that the guide members and the cutoff wall are derived from a single molding operation.
  • the monobloc embodiment in a single piece, optimizes assembly operations, in particular by reducing the number of actions that one or more operators must perform in the prior art, and it makes it possible to minimize the risks of a possible bad one. positioning of the guide members relative to the cover in the module due to the addition of manufacturing and assembly sets.
  • the cutoff wall advantageously forms an intrinsic reinforcing member of the guiding members to support their maintenance in conformation.
  • the cutoff wall can be used for mounting the optical guide inside the light module.
  • the light module has an optical axis and defines the longitudinal and transverse terms used subsequently with respect to this optical axis.
  • longitudinal means the direction extending along this optical axis, and transverse direction perpendicular to the optical axis, and parallel to the cut of the first beam.
  • forward and backward will be defined with respect to the main path of the light rays in the module, from the light source to the output of the module.
  • the reflecting surface extends longitudinally from a front edge of the optical wall of the optical guide forming the cutting edge of the first beam rearwardly.
  • the reflecting face may extend perpendicularly to a general extension plane of the outlet face of the guide members. At the thickness near the reflecting face, the cutting edge of the first beam and the output edge of the guide members are advantageously combined.
  • the reflective face can cover indifferently all or part of a surface of the outwardly facing cutoff wall of the guide members towards the first means.
  • the reflecting face may thus extend transversely, potentially along a strip, indicatively at least 5 mm wide towards the first means, said strip extending along the cutting edge of the first beam.
  • the output face of the guide members may have a generally flat shape, or a curved shape whose convexity is oriented towards the outside of the guide members.
  • the convex conformation of the exit face of the guide members is excluded from the path traveled by the first beam to a device for projecting the beams out of the light module.
  • the cutoff wall is a wall of the guiding members specifically dedicated to the formation of the cover.
  • the cutoff wall may be part of a plate extending predominantly away from the guide members, and it may be provided that the front portion of this plate is contiguous to a front portion of the guide members, by example being made of material with this front part of the guide members.
  • the cutoff wall which may in particular be generally flat, may extend partially away from at least one upper wall delimiting the path of deviated rays in the guide members.
  • This first reflection wall of the guide members is potentially flat or curved.
  • the cutoff wall to comprise a first planar part comprising the reflecting face and a second part formed in extension of the first part of the cutoff wall, said second part forming the guide zone.
  • light rays inside the guide members; the light ray guiding zone may be formed by an inner face of the clipping wall opposite the reflecting face, this reflecting face being formed by an outer face of the clipping wall; the guide zone of the light rays can be oriented in a general plane intersecting the extension plane of the reflecting face;
  • the module comprises a projection device of the first beam and the second beam, this projection device being associated jointly with the first and second means, and the reflecting face is disposed substantially perpendicularly to the focal plane and in the axis focal point of the projection optical device.
  • the projection device may consist of a lens disposed longitudinally in front of the first and second means, or may have other arrangements with one or more lenses and / or one or more reflectors.
  • the reflecting face is advantageously formed of a reflective coating formed on the guide members.
  • a reflective coating is indifferently reported or injected on an outer face of the cutoff wall.
  • such a coating is made from a metallization operation of the cutoff wall, such as an aluminage. Other techniques can be used to save the reflective surface surface of the cutoff wall at lower cost.
  • the second means comprise in particular light sources respectively assigned to each of the guide members.
  • An input face of the guide members receives the light respectively produced by the light sources of the second means, respectively arranged facing the input face of the guide members.
  • the second means may comprise at least one reflector disposed between the light sources and the input face of the guide members, each reflector being advantageously associated with one of the light sources to deflect the rays emitted towards the face of the light. input of one of the guide members.
  • At least one light source of the first means and the light sources of the second means may advantageously be mounted on a common support, respectively to opposite faces of said common support.
  • cutoff wall in particular arranged in plate, can advantageously constitute a mounting member of the guide members on a frame of the light module housing the first means and the second means.
  • the cutoff wall extends at least partly overhanging the light guides when the light module is arranged in the motor vehicle headlamp.
  • each of the light sources, the first means and the second means is in particular formed of at least a light-emitting diode, but it will be understood that other types of light sources could be used.
  • the present invention also relates to a lighting device comprising a light module as just presented, for lighting and / or signaling of a motor vehicle.
  • This device is intended in particular to equip a headlamp of a motor vehicle selectively generating a cut beam forming a dipped beam and a beam wider range forming a high beam.
  • a high beam is potentially selective, that is to say, it may have lighting zones that can be extinguished to promote intense illumination of portions of road located on either side of a vehicle coming in front of the vehicle according to the invention while lowering or cutting the lighting of the portion of the road on which this vehicle is, so as not to dazzle its driver.
  • This optimized lighting is by selective activation of one or more light sources of the second means.
  • the lighting device of the present invention comprises means for projecting the first beam and the second beam, as well as general control means.
  • the general control means comprise a first control means selectively controlling on the one hand the projection of the first cut beam forming a dipped beam generated by a first sub-module, and on the other hand the projection of a beam forming a driving beam generated jointly by said first sub-module generating the first cut-off beam and by a second generator submodule of the second complementary beam to the first cut-off beam.
  • These general control means may further comprise a second selective activation control means of at least one light source among a plurality of light sources of the second means, to control the selectivity of the high beam, that is to say the ability to obscure certain parts of the driving beam so as not to dazzle other road users.
  • the first sub-module comprises in particular, at least said at least one light source of the first means, at least one reflector of the first means directing the light produced by the light source of the first means to a projection device, and at least the reflecting surface formed on the surface of the cutoff wall integrated with the guide members that comprise the second means.
  • the second sub-module comprises in particular a plurality of light sources of the second means, to which light sources of the second means are respectively assigned the guide members, at least one reflector being optionally interposed between the light sources of the second means and the guide members which are respectively assigned to them.
  • the first sub-module and the second submodule are preferably arranged on either side of an installation plane oriented perpendicularly to the focal plane of the projection device, in particular a lens, and along the focal axis of the lens.
  • the lighting device houses the light module via a frame on which at least the first sub-module, comprising the first means, are assembled, and the second sub-module comprising the second sub-modules means.
  • the guide members are equipped with a cradle for mounting the guide members on the frame.
  • the chassis is also carrying a first support of the light source of the first means and a second support of the plurality of light sources of the second means, it being understood that the first support and the second support can be advantageously included, or included, in the same common support integrating the electric power supply and control circuits of the selective activation of the light sources.
  • Such a common support advantageously supports at a first face the light source of the first means and, at a second face opposite to the first face, the light sources of the second means.
  • the present invention also relates to a projector for a motor vehicle, comprising a housing housing a light module as just presented.
  • a light module for lighting and / or signaling of a motor vehicle comprises according to the invention first means 1 arranged to produce a first cut-off beam F1, second means 2 arranged to produce a second complementary beam F2 to the first breaking beam, when the first and second means are activated simultaneously and a projection optical device 3 disposed in the path of these beams at the output of the module.
  • An exemplary projection device is illustrated in the figure. This is a lens 4 arranged longitudinally downstream of the first and second means. It is understood that the projection device may have other forms known elsewhere, for example consist of one or more lenses and / or one or more reflectors.
  • the module further comprises general control means 5 for the implementation of the first cutoff beam F1 and / or the second complementary beam F2. It will be understood that the first beam F1 constitutes a beam of passing light, and that the combination of the second beam F2 and the first beam F1 constitutes a beam of driving light.
  • the projection device has a focal plane Pf, represented by dashed lines in certain of the figures, and the position of the different elements of the projection device is determined accurately to obtain a reliable positioning of this focal plane.
  • the first means 1 and the second means 2 are respectively distributed on either side of the focal axis A of the projection device 3 and more particularly of the lens 4.
  • said focal axis A s' extends in the longitudinal direction of extension of the light module.
  • the first means and the second means are, in the orientation of the module illustrated in the figures, arranged one above the other, forming respectively a first submodule and a second sub-module arranged in the same module housing , and each comprising at least one light source.
  • the first sub-module comprises at least a first light source 6, at least a first reflector 7 forming optical deflection means of the rays emitted by the first light source 6 and a cover 8 for cutting off these rays deviated towards the projection device 3 .
  • the second sub-module comprises at least a second light source 9 and at least one optical guide 10 respectively directing the light generated by the at least one second light source 9 to the projection device 3.
  • one or more second light sources may be provided and an optical guide 10 is provided for each of the second light sources.
  • the optical guide (s) 10 are arranged to cooperate with the second light source (s) 9 so as to form images of these sources at the focal plane Pf of the projection optical device 3, so that these images can be projected by the device. projection at the output of the module.
  • the general control means 5 comprise a first control means 11, for selectively controlling the production of the first single beam F1 or the two combined beams F1 and F2 according to the detected circulation conditions.
  • first control means 11 is activated in particular by a manual control member 12 operable by the driver of the vehicle and / or by at least one automatic control member 13.
  • the activation of the automatic control member 13 conventionally depends on predefined parameters, such as in particular the detection of a third vehicle near the vehicle.
  • three second light sources 9 are provided, in order to play on the ignition of one or the other to achieve a selective beam as will be described below.
  • the second light sources 9 are two in number, or in number greater than three.
  • the realization of a selective beam is not mandatory so that the second sub-module could comprise a single light source and a single associated light guide.
  • the optical guide consists of a plurality of light guide members 10 which have a section, in the focal plane Pf of the projection device 3, such that the images projected by the projection device at the output of the module are substantially segments whose association forms the second light beam F2. It is understood that each beam portion segment is obtained by the cooperation of a second source 9 and an associated optical guide 10. Thereafter, it will speak indifferently of optical guide or guide members.
  • the general control means 5 also comprise a second control means 14, for selectively activating the various second light sources 9 second means 2, alone or in combination.
  • a second control means 14 is for example activatable by a means 15 for detecting the presence of a user of the traffic lane that may be obstructed by the high beam produced, such as the driver of a vehicle crossing the vehicle. equipped with at least one light module according to the invention.
  • the light sources 6 and 9, respectively assigned to the first generator means 1 of the first beam F1 and the second generator means 2 of the second beam F2, are installed on a common support 16 and 17 for mounting the interior of the lighting and / or signaling device.
  • the common support advantageously forms a means for thermal cooling of the light sources that it carries.
  • the support here takes the form of a first printed circuit board 16, on which is mounted a light-emitting diode forming the first light source 6, and a second printed circuit board 17, forming a dropped edge extending the end of the first printed circuit board facing the optical projection device 3 and on which are mounted the light-emitting diodes forming the second light sources 9.
  • These printed circuit boards incorporates power supply circuits of the diodes and the control circuits causing their activation.
  • the first light source 6 is overhung by the first reflector 7, which is capable of deflecting the rays emitted by the source towards the projection device 3, and the cover 8 which cuts off the rays deviated by the first reflector 7 is arranged between the first reflector and the projection device.
  • the first reflector 7 is of the elliptical type. It has two focal points, an optical axis and a substantially elliptical reflective inner surface.
  • the first light source 6 emits the majority of its light energy towards the reflecting inner surface and it is arranged in the vicinity of the first focus of the first reflector 7.
  • the entire first sub-module is arranged so that the second focus is included in FIG. the focal plane Pf of the projection optical device 3, it being understood that it could be, without departing from the context of the invention, substantially in the vicinity of this focal plane.
  • the cover 8 ensures at least in part the cutting of the rays deviated by the first reflector, so that the rays that could cut the optical axis A upstream of the focal plane Pf, and therefore out of the lens pointing upwards, are blocked, or cut, and that only spokes allowing the realization of a first beam F1 conforming to a beam of crossing light are directed towards the lens 4.
  • the cover 8 has a face 19, turned on the side of the first sub-module, which is reflective.
  • the rays to cut the optical axis A upstream of the focal plane Pf are then reflected, as can be illustrated by the bold line of the figure 1 , towards the lens 4, with an angle of incidence such that they emerge from the lens pointing downwards. This increases the photometric quantity without losing the quality of the non-glare beam type passing beam.
  • this reflecting face 19 of the cover 8 is the upper face of a cutoff wall 20 that intrinsically comprise the guide members 10 of the second means 2. In this way, it is understood that the reflecting face 19 is carried by the guide members 10 and directed towards the outside thereof, towards the first means 1.
  • the reflecting face 19 can be formed throughout the longitudinal and / or transverse dimension (as shown in broken lines on the figure 1 ), it is understood that it can be formed only in a strip 21 extending along a cutoff edge 22 of the cutoff wall 20, as shown in continuous lines this time on the figure 1 .
  • the band 21 may in particular have a width, depending on the direction longitudinal parallel to the focal axis A of the projection device 3, a value indicative of the order of 5mm. It is obvious that such a width can be adapted and in particular increased to take into account the mounting sets of the sub-modules and ensure the reflection of the rays not coming exactly to the second focus of the reflector, or decreased to optimize the amount of material reflective used.
  • the reflecting face 19 corresponds to the external face of an upper wall of the guide, so as to extend in a plane P1 substantially parallel to the horizontal plane including the focal axis A of the projection device 3.
  • the cutoff edge 22 extends in length in the transverse direction, in the vicinity of the focal plane Pf.
  • the cutoff edge 22 coincides with the thickness near the reflecting face, with an outlet edge 23 of a face output 24 of the guide members 10 through which escape the light segments forming the second beam F2.
  • the cutoff edge 22 of the cover 8 may have a curved profile, in particular by having a step shape substantially in the center of the cutoff edge.
  • the cutoff edge is thus composed of two distinct parts offset vertically relative to each other, and an inclined plane, for example 15 ° or 45 °, then connects them to form said step.
  • the outlet face 24 of the guide members 10 is generally oriented along a plane P2 that is substantially parallel to, and preferably coincides with, the focal plane Pf of the projection device 3.
  • Said exit face 24 is for example of planar conformation, or alternatively for example still of convex conformation vis-à-vis the plane P2 of general extension of the outlet face 24 of the guide members 10.
  • the guide members 10 and the cutoff wall 20 advantageously form a one-piece assembly facilitating the precise, reliable and durable positioning of the guide members 10, and consequently of the reflecting face 19, inside the lighting module and / or signaling.
  • Such positioning can easily be achieved by a fixed mounting and robust, on a frame of the light module, light guides 10 and consequently the reflecting face 19 forming the cover 8 making the cut of the first beam F1.
  • the guide members 10 incorporating the cutoff wall 20 may be mounted on the frame by means of a cradle 26 for supporting the guide members 10.
  • the mounting of the guide members 10 on the frame can be achieved through the wall cutoff.
  • the guide members 10 are arranged in transverse series perpendicular to the ray emission axis at the output of the module, and they are arranged in a fan arrangement.
  • a fan arrangement is understood to mean that the respective downstream ends of the guide members carrying the outlet faces 42 are glued together and the respective upstream ends carrying the inlet faces 40 are transversely spaced apart. one from the other.
  • This fan arrangement is combined with the one-piece construction of the cutoff wall and guide members. It is understood that the cutoff wall extends mainly, or at least it is in connection with the guides, at the respective downstream ends of the guide members.
  • FIGS. 1 and 2 illustrate various respective examples of arrangement of the optical members composing the second means 2 generators of the second beam F2.
  • the figure 2 differs from the first embodiment described above with regard to the arrangement of the second sub-module, and in particular with regard to the presence of at least one reflector between a second light source 9 and the input face 27 of a optical guide 10.
  • the second light sources 9 are mounted on the same support 18 as the first light source 6, respectively on one or the other of the opposite faces of this common support, in particular formed of a printed circuit board such that previously described.
  • the second submodule therefore comprises at least one auxiliary reflector 28 interposed between the second light sources 9 and the input face 27 of the guide members 10 respectively assigned to the second light sources 9.
  • a single second light source emits rays in the direction of a single reflector for the rays penetrate into a single optical guide 10, and advantageously provide a transverse series of second light sources, a transverse series of auxiliary reflectors and a transverse series of guide members, with an optical guide associated with an auxiliary reflector and a second light source .
  • the annex reflector 28 is of the elliptical type and has two foci, an optical axis and a substantially elliptical reflective inner surface.
  • the second light source 9 associated with the annex reflector 28 emits the majority of its light energy towards the reflecting inner face and is arranged in the vicinity of the first focus of the adjoining reflector.
  • the entire second sub-module is arranged so that the second focus is substantially in the plane of the input face of the associated optical guide 10.
  • Each optical guide 10 has an input face 27 and an output face 24 so as to guide the light from the input face to the output face and it is made of a material allowing this propagation, of polycarbonate type (PC ), polymethylmethacrylate (PMMA), silicone or glass.
  • Each optical guide 10 further comprises an upper face 29 and a reflection face 30 which extend between the ends of the input face and the output face, the reflection face 30 being turned away from the cache while the upper face 29 is turned towards the cover 20.
  • the second light sources 9 (9a, 9b, 9c) are also shown for recall according to the embodiment of the device lighting and / or signaling shown on the figure 1 .
  • the second light sources 9 (9a, 9b, 9c) are respectively assigned to the various guide members 10 (10a, 10b, 10c) integral with the cutoff wall 20, with which the cutoff wall 20 guide 10 form said one-piece assembly.
  • the reflecting face 19 is arranged in a strip 21, formed by a coating of the surface of the cut-off wall 20 facing the outside of the guide members 10.
  • said strip 21 extends along the cutting edge 22 of the cutoff wall 20 substantially coincides with the outlet edge 23 of the outlet face 24 of the guide members 10, in the transverse direction.
  • a variant is possible and illustrated in diagram (a) of the figure 5 , in which the reflecting surface 19 is formed of a coating formed on the entire surface of the cutoff wall 20 facing outwards of the guide members 10.
  • the outlet face 24 of the guide members 10 is plane while being oriented perpendicularly to the cutoff wall 20, whereas in the diagrams (b) and (c) of FIG. figure 5 , the outlet face 24 of the guide members 10 is curved while being oriented in its general plane of extension perpendicularly to the cutoff wall 20.
  • the convexity of the curved conformation of the outlet face 24 of the guide members 10 is oriented towards the outside of the guide members 10, and that the curvature of said outlet face 24 is adapted so as not to hinder the passage of the first beam F1 cut to the projection device 3 and in particular the lens 4, not shown in the drawings of the figure 5 .
  • the guide is shown in a first series of alternative embodiments, in which it is provided that the cutoff wall 20 is formed by integrating a plate 20 'to the guide members.
  • the plate 20 ' extends in a horizontal plane under which, in Referring to the vertical ordering resulting from the implantation of the light module in a vehicle headlight, extend the guide members.
  • the plate 20 ' has a proximal end which is formed in the continuity of the proximal end of the guide members carrying the exit faces, and a distal end which extends partially away from the upper face 29 of the guide members. 10, and more specifically at the rear of the guide members 10 in their longitudinal direction.
  • Said top face 29 is a face of the guide members 10 which can participate in guiding the light rays towards the exit face 24. It is understood that in this case, the cutoff wall 20 is specifically dedicated to the formation of the cover 8 providing the cutoff of the first beam F1.
  • the cutoff wall 20 is made in the longitudinal continuity of the upper face 29 of the guide members 10. It can therefore be understood that the cutoff wall participates on the one hand, by its outer face to the guides, the formation of the cut of the first beam F1, and secondly, by its inner face to the guides, the routing of the light rays through the guide members 10 and to their exit face 24. It should be noted that such provisions are independent of the planar conformation (visible on the diagram (d)) or curved (visible on the diagrams (c) or (e)) of the outlet wall 24 of the guide members 10.
  • the cutoff wall 20 may comprise a first flat portion 31 comprising the reflecting face 19 and which is extended rearward, in the longitudinal direction of the guide members 10, by a second portion 32 making the connection with the face upper 29 of the guide.
  • This second part 32 is in particular oriented along a general plane P3 intersecting the extension plane P1 of the first part 31.
  • the second part 32 of the cutoff wall 20 is potentially of planar conformation or elliptical conformation of which the concavity is oriented towards the inside of the guide members 10, as in the exemplary embodiments illustrated.
  • the upper face 29 can be substantially flat, as illustrated in the diagrams (a) and (b) of FIG. figure 5 or it may have a slight curvature (diagrams (c) and (d)), being noted that in all cases, the direct path of a light ray (shown in dashed lines on diagrams (a) through (d)) )) between the center of the input face 27 and the output edge 23 disposed substantially at the object focal point of the lens 4 is not thwarted by the presence of this upper wall. This optimizes the transmission of these direct rays which make it possible to obtain a beam at the exit of a lens with a high luminous intensity and with limited chromatic aberrations.
  • the figure 5 a form of optical guide that stands out more strongly from what may exist elsewhere.
  • the upper face 29 has a substantially elliptical shape in a longitudinal and vertical sectional plane of the guide.
  • the elliptical shape of the upper face is such that a first focus is centered on the input face 27 of the optical guide and a second focus is centered on the output edge 23 of the face of the 24.
  • the exit face is enlarged so as to extend vertically on a greater height below the cutting edge, and that the reflection face 30 is flattened, to easily control the production of light rays over a large height in the focal plane of the projection device and the resultant creation of large light segments, it being understood that it is appropriate as previously described that most of the rays arrive on the exit face at the exit edge 23.
  • the cutoff edge 22 and the outlet edge 23 can be rigorously positioned fixed inside the light module, extending perpendicularly along the focal plane Pf and in the focal axis A of the projection device. 3 and in particular of the lens 4.

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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)
EP16177276.9A 2015-07-10 2016-06-30 Leuchtmodul zur beleuchtung und/oder signalisierung für kraftfahrzeug Pending EP3115683A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1556625A FR3038696B1 (fr) 2015-07-10 2015-07-10 Module lumineux pour l'eclairage et/ou la signalisation d'un vehicule automobile

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EP3115683A1 true EP3115683A1 (de) 2017-01-11

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN106641964A (zh) * 2017-01-19 2017-05-10 上海小糸车灯有限公司 一种具有adb功能的led光源远近光一体车灯模组
EP3428012A3 (de) * 2017-06-22 2019-03-06 LG Electronics Inc. Lampe für ein fahrzeug
EP3473917A4 (de) * 2017-01-19 2019-06-26 Hasco Vision Technology Co., Ltd. Integriertes fahrzeuglampenmodul mit fern- und abblendlicht mit led-lichtquelle mit adb-funktion
WO2022116683A1 (zh) * 2020-12-01 2022-06-09 华域视觉科技(上海)有限公司 一种远光车灯光学元件、车辆远光照明单元、车灯及车辆
EP3865766A4 (de) * 2018-10-10 2022-07-20 Ichikoh Industries, Ltd. Lichtleiter für fahrzeuge und lampe für fahrzeuge

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JP2013242996A (ja) * 2012-05-18 2013-12-05 Koito Mfg Co Ltd 車両用前照灯
EP2711611A1 (de) * 2012-09-24 2014-03-26 Valeo Vision Beleuchtungsmodul, insbesondere für Kraftfahrzeug
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EP1500869A1 (de) * 2003-07-24 2005-01-26 Valeo Vision Elliptische Beleuchtungseinheit ohne Lichtblende zur Erzeugung eines Abblendlichtbündels und Scheinwerfer mit einer derartigen Belleuchtungseinheit
DE102006042749A1 (de) 2005-09-13 2007-03-29 Koito Mfg. Co., Ltd. Leuchteinheit für einen Fahrzeugscheinwerfer
EP2159481A1 (de) * 2008-09-02 2010-03-03 Koito Manufacturing Co., Ltd. Beleuchtungsvorrichtung für Fahrzeug
EP2390561A1 (de) * 2010-05-28 2011-11-30 Hella KGaA Hueck & Co. LED-Projektionsmodul für einen Fahrzeugscheinwerfer
WO2013075157A1 (de) * 2011-11-22 2013-05-30 Zizala Lichtsysteme Gmbh Led-projektionsmodul
JP2013242996A (ja) * 2012-05-18 2013-12-05 Koito Mfg Co Ltd 車両用前照灯
EP2711611A1 (de) * 2012-09-24 2014-03-26 Valeo Vision Beleuchtungsmodul, insbesondere für Kraftfahrzeug
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Publication number Priority date Publication date Assignee Title
CN106641964A (zh) * 2017-01-19 2017-05-10 上海小糸车灯有限公司 一种具有adb功能的led光源远近光一体车灯模组
EP3473917A4 (de) * 2017-01-19 2019-06-26 Hasco Vision Technology Co., Ltd. Integriertes fahrzeuglampenmodul mit fern- und abblendlicht mit led-lichtquelle mit adb-funktion
KR20190082810A (ko) * 2017-01-19 2019-07-10 하스코 비전 테크놀로지 컴퍼니 리미티드 Adb 기능이 있는 led 광원 하이-로우 빔 일체형 차량용 램프 모듈
JP2019522336A (ja) * 2017-01-19 2019-08-08 華域視覚科技（上海）有限公司Ｈａｓｃｏ Ｖｉｓｉｏｎ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． Ａｄｂ機能を備えたｌｅｄ光源のハイビーム・ロービーム一体型前照灯モジュール
EP3428012A3 (de) * 2017-06-22 2019-03-06 LG Electronics Inc. Lampe für ein fahrzeug
US10655819B2 (en) 2017-06-22 2020-05-19 Zkw Group Gmbh Lamp for vehicle and method for controlling the same
EP3865766A4 (de) * 2018-10-10 2022-07-20 Ichikoh Industries, Ltd. Lichtleiter für fahrzeuge und lampe für fahrzeuge
US11603972B2 (en) 2018-10-10 2023-03-14 Ichikoh Industries, Ltd. Light guide for vehicles, and lamp for vehicles
WO2022116683A1 (zh) * 2020-12-01 2022-06-09 华域视觉科技(上海)有限公司 一种远光车灯光学元件、车辆远光照明单元、车灯及车辆

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FR3038696A1 (fr) 2017-01-13
FR3038696B1 (fr) 2022-02-18

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