EP4023935B1 - Phare automobile - Google Patents

Phare automobile Download PDF

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Publication number
EP4023935B1
EP4023935B1 EP20217954.5A EP20217954A EP4023935B1 EP 4023935 B1 EP4023935 B1 EP 4023935B1 EP 20217954 A EP20217954 A EP 20217954A EP 4023935 B1 EP4023935 B1 EP 4023935B1
Authority
EP
European Patent Office
Prior art keywords
light
guide plate
flat face
automotive
leds
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.)
Active
Application number
EP20217954.5A
Other languages
German (de)
English (en)
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EP4023935A1 (fr
Inventor
Pierfrancesco Zilio
Sara Paroni
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Marelli Automotive Lighting Italy SpA
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Priority to EP20217954.5A priority Critical patent/EP4023935B1/fr
Publication of EP4023935A1 publication Critical patent/EP4023935A1/fr
Application granted granted Critical
Publication of EP4023935B1 publication Critical patent/EP4023935B1/fr
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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]
    • F21S41/151—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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors

Definitions

  • the present invention relates to an automotive light.
  • the present invention relates to a headlight or taillight for cars and similar vehicles, i.e. a lighting apparatus adapted to be incorporated into a motor vehicle with the function of signalling the position, the sudden deceleration and/or the turning direction, and/or with the function of illuminating the area surrounding the vehicle.
  • a headlight or taillight for cars and similar vehicles i.e. a lighting apparatus adapted to be incorporated into a motor vehicle with the function of signalling the position, the sudden deceleration and/or the turning direction, and/or with the function of illuminating the area surrounding the vehicle.
  • the taillights for cars and similar vehicle generally comprise: a rigid and substantially basin-shaped rear body which is structured so as to be stably recessed into a compartment specially realized in the rear part of the bodywork of the vehicle; a front half-shell which is arranged to close the mouth of the rear body so as to surface outside the bodywork of the vehicle, and is generally provided with a plurality of transparent or semitransparent sectors, usually differently coloured to one another; and a series of lighting assemblies that are located inside the rear body, each immediately beneath a respective transparent or semitransparent sector of the front half-shell, so as to be able to selectively backlight the overlying transparent or semitransparent sector of the front half-shell.
  • each transparent or semitransparent sector of the front half-shell is moreover uniquely associated with a specific light signal adapted to signal the position of the vehicle, the sudden deceleration of the vehicle or the turning direction of the vehicle during travel.
  • Each lighting assembly is specifically structured to emit, on command, a light beam that, once coming out from the taillight through the corresponding transparent or semitransparent sector of the half-shell, meets the approval specifications (colour and light distribution) required for the corresponding light signal.
  • the front half-shell has one or more transparent or semitransparent ribbon-like sectors, i.e. one or more transparent or semitransparent sectors with a narrow and very elongated shape.
  • the lighting assemblies that have to backlight the transparent or semitransparent ribbon-like sectors of the half-shell usually comprise: a large light-guide plate which is made of polymethylmethacrylate (PMMA) or other photoconductive material, and is placed inside the rear body with the front sidewall skimming over the transparent or semitransparent ribbon-like sector to be backlighted, substantially along the entire length of the same transparent or semitransparent sector, and with the rear sidewall facing the bottom of the rear body; and a row of high-power LEDs (acronym for Light Emitting Diode) that are arranged close to the rear sidewall of the light-guide plate, and are oriented so as to direct the light produced inside the light-guide plate. This light then travels inside the body of the light-guide plate by total internal reflection, and comes out from the front sidewall of the light-guide plate, backlighting the facing transparent or semitransparent sector of the front half-shell.
  • PMMA polymethylmethacrylate
  • US2014/268848 A1 discloses an automotive light provided with a lighting assembly that comprises: a reflector body having a reflecting surface; a solid-state light source which is oriented to direct the light produced directly towards the reflecting surface of said reflector body; and a plate-like light-guide element, which is arranged beside the reflector body with its rear sidewall on a side of the solid-state light source, so as to be illuminated by a minor part of the light emitted by said solid-state light source.
  • Aim of the present invention is to obviate the above-described drawbacks by creating a taillight for cars which is capable of producing new light tricks that are different from those produced by the taillights currently on the market.
  • an automotive light as defined in Claim 1 and preferably, though not necessarily, in any one of the claims depending on it.
  • number 1 denotes as a whole an automotive light, i.e. a lighting apparatus particularly adapted to be firmly fixed on the front or rear part of the bodywork of a motor vehicle, with the function of emitting light signals adapted to signal the position of the vehicle and/or the sudden deceleration of the vehicle and/or the turning direction of the vehicle during travel and/or with the function of illuminating the area surrounding the vehicle.
  • a lighting apparatus particularly adapted to be firmly fixed on the front or rear part of the bodywork of a motor vehicle, with the function of emitting light signals adapted to signal the position of the vehicle and/or the sudden deceleration of the vehicle and/or the turning direction of the vehicle during travel and/or with the function of illuminating the area surrounding the vehicle.
  • the automotive light 1 is moreover structured to be stably recessed into the bodywork of the vehicle (not shown) so as to surface outside the latter.
  • the automotive light 1 is preferably structured to be recessed into the rear part of the bodywork of a car or other similar motor vehicle.
  • the automotive light 1 is preferably a taillight for cars and the like.
  • the automotive light 1 may be also structured so as to be simply fixed cantilevered on the front or rear part of the bodywork of the vehicle (not shown).
  • the automotive light 1 in particular comprises: a substantially rigid and preferably made of plastic material, rear body 2 which is substantially basin-shaped and is structured to be firmly fixed to the bodywork of the vehicle (not shown); and a substantially rigid and preferably made of plastic material, front half-shell 3, traditionally called lens, which is arranged to close the mouth of rear body 2, preferably so as to surface outside of the bodywork of the vehicle, and is moreover provided with one or more transparent or semi-transparent sectors, optionally also coloured.
  • automotive light 1 also comprises one or more electrically-powered lighting assemblies, each of which emits light on command and is placed inside the rear body 2, underneath a corresponding transparent or semitransparent sector of front half-shell 3, so as to be able to selectively backlight the same transparent or semitransparent sector of front half-shell 3, preferably separately and independently from the other lighting assemblies.
  • the or at least one of the lighting assemblies of automotive light 1 is furthermore structured so as to direct the light towards the corresponding and facing transparent or semitransparent sector of front half-shell 3, with a prevailing component of the light beam substantially parallel to a given reference axis, which is preferably substantially parallel to the longitudinal axis of the vehicle when the automotive light 1 is correctly mounted/placed on the bodywork of the vehicle.
  • most of the light rays forming the light beam that comes out of the lighting assembly is substantially parallel to the reference axis of the lighting assembly.
  • the rear body 2 is preferably structured so as to be at least partially recessed into a seat specially realized in the rear part of the bodywork of the vehicle (not shown).
  • the rear body 2 may also be structured so as to be at least partially recessed into a seat specially made in the front part of the bodywork of the vehicle (not shown), or so as to be simply fixed cantilevered on the front or rear part of the bodywork of the vehicle.
  • the rear body 2 is preferably made of an opaque plastic material, preferably via an injection moulding process.
  • the front half-shell 3 is preferably made of a transparent or semitransparent plastic material, such as for example polycarbonate (PC) or polymethylmethacrylate (PMMA), also in this case preferably via an injection moulding process.
  • a transparent or semitransparent plastic material such as for example polycarbonate (PC) or polymethylmethacrylate (PMMA), also in this case preferably via an injection moulding process.
  • the front half-shell 3 is preferably provided with a plurality of adjacent transparent or semitransparent sectors (three transparent or semitransparent sectors), each of which is separately backlighted by a corresponding electrically-powered lighting assembly.
  • At least one of the lighting assemblies of automotive light 1, hereafter denoted with the number 4, furthermore comprises: a reflector body 5 preferably having a substantially concave structure and preferably made of plastic material, which is placed inside the rear body 2 with the mouth spaced and turned towards the corresponding and facing transparent or semitransparent sector 3a of front half-shell 3, and is internally provided with a reflecting surface 5a that faces the transparent or semitransparent sector 3a and is shaped so as to reflect the incident light towards the same transparent or semitransparent sector 3a; and at least one, preferably substantially rectilinear, row of LEDs 6 (acronym for Light Emitting Diode) that are arranged inside the rear body 2 close to the reflector body 5 and direct the light produced towards the reflecting surface 5a of reflector body 5.
  • a reflector body 5 preferably having a substantially concave structure and preferably made of plastic material, which is placed inside the rear body 2 with the mouth spaced and turned towards the corresponding and facing transparent or semitransparent sector 3a of front half-shell 3,
  • the reflector body 5 preferably has a substantially basin-shaped structure, and the row of LEDs 6 is preferably placed substantially at the mouth of the reflector body 5, optionally close to a side edge of the same mouth of reflector body 5.
  • the reflecting surface 5a of reflector body 5 is preferably concave, and is preferably also shaped so as to reflect the incident light towards the facing transparent or semitransparent sector 3a of front half-shell 3, preferably with a prevailing/major component of the light beam substantially parallel to a predetermined reference axis A of lighting assembly 4 that is preferably substantially parallel to the longitudinal axis of the vehicle when the automotive light 1 is correctly mounted/placed on the bodywork of the vehicle.
  • the mouth of reflector body 5 moreover lies on a plane inclined with respect to reference axis A, and the row of LEDs 6 is preferably placed inside the rear body 2, on a side of the empty space/volume delimited at the rear by the reflecting surface 5a of reflector body 5 and at the front of the transparent or semitransparent sector 3a of front half-shell 3.
  • the row of LEDs 6 is arranged inside the rear body 2, on a side of the path that the light reflected by the reflecting surface 5a of reflector body 5 makes to reach the transparent or semitransparent sector 3a of front half-shell 3.
  • the LEDs 6 of lighting assembly 4 are moreover arranged spaced one beside the other, on a single plate-like support board 7, which is preferably provided with the electronic supply and control circuit of the diode, and is placed inside the rear body 2, beside the reflector body 5, so that the single LEDs 6 can direct the light produced towards the reflecting surface 5a of reflector body 5.
  • the reflector body 5 is preferably made up of a concave half-shell which is shaped substantially like an oblong basin, and is preferably made of an opaque plastic material, preferably via an injection moulding process.
  • the inner surface of the substantially oblong basin-shaped half-shell moreover has a reflective metallic finishing so as to form the reflecting surface 5a of reflector body 5.
  • the LEDs 6 are oriented so as to direct the prevailing/major part of the emitted light directly towards the reflecting surface 5a of reflector body 5.
  • the lighting assembly 4 in turn, moreover comprises at least one photoconductive-material light-guide plate 10, preferably made of transparent plastic material, which is placed inside the rear body 2, beside the reflector body 5, with its rear sidewall 10b next to/beside the row of LEDs 6, so as to be illuminated by a minor part of the light emitted by the LEDs 6.
  • the light-guide plate 10, moreover, extends towards the front half-shell 3 so as to arrange its front sidewall 10a close to the front half-shell 3, preferably while remaining at least for a portion substantially parallel to the reference axis A of lighting assembly 4.
  • each LED 6 conventionally emits at least 50% of the light energy produced within a maximum emission cone of given width, which has an opening angle ⁇ preferably lower than 90° and usually ranging between 5° and 60°.
  • the maximum emission cone of the various LEDs 6 is directed/oriented towards the reflecting surface 5a of reflector body 5.
  • the minor part of the light emitted by the LEDs 6 is substantially external to the maximum emission cone of the various LEDs 6.
  • the rear sidewall 10b of the light-guide plate 10 is therefore reached only by the light rays r that come out from the LED 6 with a high inclination angle with respect to the optical axis B of the LED.
  • the LEDs 6 of lighting assembly 4 are preferably arranged close to the reflector body 5 with their optical axis B substantially perpendicular to the reference axis A and/or locally substantially perpendicular to the lying plane of the rear sidewall 10b of light-guide plate 10.
  • the rear sidewall 10b of light-guide plate 10 is preferably arranged beside the row of LEDs 6, so as to be reached solely by the light rays r that have an angle of inclination with respect to the LED optical axis B greater than 90% of the half of the opening angle ⁇ of the maximum emission cone of the LED.
  • the protruding teeth 11 are preferably structured to deviate and spread the incident light rays r inside the body of light-guide plate 10, so that intensity of the light beam exiting from the front sidewall 10a of light-guide plate 10 has a substantially constant intensity over the whole extension of the front sidewall 10a.
  • the protruding teeth 11 are moreover shaped so as to direct and spread, inside the light-guide plate 10, the light rays r entering into the light-guide plate 10, so that the light beam exiting from the front sidewall 10a of light-guide plate 10 has a prevailing/major component of the light rays parallel to a preferably substantially horizontal, given direction d.
  • most of the light rays r forming the light beam that exits from the front sidewall 10a of light-guide plate 10, is preferably substantially parallel to the direction d.
  • the direction d is inclined by a predetermined angle with respect to the reference axis A of the lighting assembly 4.
  • the direction d can also be substantially parallel to the reference axis A of the lighting assembly 4.
  • the upper prismatic portion of the protruding tooth 11 is shaped so as to divert/refract, towards the lower prismatic portion, at least a part and more conveniently whole of the light rays r entering into the protruding tooth 11.
  • the lower prismatic portion of protruding tooth 11 has a major flat face or surface 11c and a minor flat face or surface 11d, both preferably substantially parallelogram-shaped, of which one is contiguous and inclined with respect to the other and both are inclined with respect to the adjacent and bordering lower face of the light-guide plate 10.
  • protruding tooth 11 is aligned and inclined with respect to the overlying major flat face or surface 11a.
  • minor flat face or surface 11d of protruding tooth 11 is simultaneously aligned and inclined with respect to the overlying minor flat face or surface 11b of protruding tooth 11.
  • the major flat face or surface 11a and, preferably though not necessarily, also the minor flat face or surface 11b of protruding tooth 11 is/are adapted to divert/refract the incident light rays r towards the underlying lower prismatic portion of protruding tooth 11, i.e. towards the major flat face or surface 11c and/or towards the minor flat face or surface 11d.
  • the major flat face or surface 11c and, preferably, also the minor flat face or surface 11d of protruding tooth 11, on the other hand, is/are adapted to divert/reflect, by total internal reflection and towards the inside of the light-guide plate 10, the light rays r coming from the upper prismatic portion of protruding tooth 11 preferably while spreading them in a predefined manner inside the light-guide plate 10.
  • the major flat face or surface 11c and preferably also the minor flat face or surface 11d of the various protruding teeth 11 of light-guide plate 10 are adapted to direct the light rays r coming from the upper prismatic portion of protruding teeth 11 towards the inside of the light-guide plate 10, preferably while also spreading the light rays r inside the body of light-guide plate 10 so that the intensity of the light beam exiting from the front sidewall 10a of light-guide plate 10 has a substantially constant intensity over the whole extension of the front sidewall 10a.
  • the major flat faces or surfaces 11c of the various protruding teeth 11 of light-guide plate 10 are moreover oriented so that the light beam exiting from the front sidewall 10a of light-guide plate 10 has a prevailing /major component substantially parallel to direction d.
  • some minor flat faces or surfaces 11d of the protruding teeth 11 of light-guide plate 10 are preferably, though not necessarily, oriented so as to direct the incident light rays r towards the lateral sidewall of the light-guide plate 10, so that a part of the light emitted by LEDs 6 exits from the lateral sidewall of light-guide plate 10 in a direction preferably substantially perpendicular to reference axis A.
  • the light 1 is able to emit even a small light beam in a direction substantially perpendicular to the reference axis A, thus also producing the side-marker light signal.
  • the major flat faces or surfaces 11c and the minor flat faces or surfaces 11d of some protruding teeth 11 of light-guide plate 10 are preferably adapted to divert the light inside the body of light-guide plate 10 in two different and distinct directions, preferably orthogonal to each other.
  • the light-guide plate 10 preferably has a monolithic structure, and is preferably made of polycarbonate (PC), of polymethylmethacrylate (PMMA) or of another transparent plastic material, preferably via an injection moulding process.
  • PC polycarbonate
  • PMMA polymethylmethacrylate
  • the automotive light 1 is preferably additionally provided with a covering mask 13 made of opaque material, which is placed inside the rear body 2, immediately underneath the front half-shell 3, and is structured so as to cover/hide from view some parts of the lighting assembly(ies) of the automotive light.
  • a covering mask 13 made of opaque material, which is placed inside the rear body 2, immediately underneath the front half-shell 3, and is structured so as to cover/hide from view some parts of the lighting assembly(ies) of the automotive light.
  • each protruding tooth 11 with a substantially wedge-shaped polyhedral structure and preferably, though not necessarily, also the adjacent minor flat face or surface 11b, are oriented so as to divert/refract the incident light rays r towards the underlying lower prismatic portion of the protruding tooth 11, i.e. towards the major flat face or surface 11c and/or towards the minor flat face or surface 11d, with a direction so that the angle of incidence on the major flat face or surface 11c or, possibly, on the minor flat face or surface 11d of protruding tooth 11, is always greater than the limit angle.
  • the light rays r are reflected by the major flat face or surface 11c or by the minor flat face or surface 11d of protruding tooth 11 towards the inside of the light-guide plate 10 without leaks.
  • the major flat faces or surfaces 11c and optionally also the minor flat faces or surfaces 11d of the various protruding teeth 11 are, moreover, altogether oriented so that the intensity of the light beam exiting from the front sidewall 10a of light-guide plate 10 has a substantially constant intensity over the whole extension of the same front sidewall 10a.
  • the major flat faces or surfaces 11c and optionally also the minor flat faces or surfaces 11d of the various protruding teeth 11 are preferably oriented so that a prevailing/major component of the light beam exiting from the front sidewall 10a of light-guide plate 10 is substantially parallel to direction d and, therefore, to the reference axis A of lighting assembly 4.
  • the lighting assembly 4 is able to produce and direct, towards the front half-shell 3, and more specifically towards the facing transparent or semitransparent sector 3a of front half-shell 3, a first light beam with a prevailing/major component substantially parallel to the reference axis A of lighting assembly 4, and a second light beam with a prevailing/major component substantially parallel to a given direction d that may be parallel or inclined to the reference axis A of lighting assembly 4.
  • the wedge-shaped polyhedral structure of the protruding teeth 11 allows to the light rays r coming from the LEDs 6 to be distributed more precisely inside the light-guide plate 10, so that the intensity of the light beam exiting from the front sidewall 10a of light-guide plate 10 has a nearly constant intensity over the whole extension of front sidewall 10a, with the aesthetic advantages that this entails.
  • the protruding teeth 11 of light-guide plate 10 may be subdivided into two or more groups.
  • the first group of protruding teeth 11 may have the lower prismatic portions, or rather the flat faces or surfaces 11c and 11d, oriented so as to direct and spread the light rays r entering into the light-guide plate 10 so that a corresponding first light beam exiting from the front sidewall 10a of light-guide plate 10 has a prevailing/major component of the light rays parallel to the direction d.
  • the second or further group of protruding teeth 11, on the other hand, may have the lower prismatic portions, or rather the flat faces or surfaces 11c and 11d, oriented so as to direct and spread the light rays r entering into the light-guide plate 10, so that a corresponding second/further light beam exiting from the front sidewall 10a of light-guide plate 10 has a prevailing/major component of the light rays parallel to a second/further predetermined direction, which is inclined with respect to direction d and/or to the reference axis A of lighting assembly 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)
  • Planar Illumination Modules (AREA)

Claims (18)

  1. Éclairage automobile (1) comprenant : un corps arrière sensiblement en forme de cuvette (2) ; une demi-coque avant (3) qui est agencée pour fermer l'embouchure du corps arrière (2) et pourvue d'au moins un secteur transparent ou semi-transparent (3a) ; au moins un premier ensemble d'éclairage (4) qui émet de la lumière sur commande et qui est situé à l'intérieur du corps arrière (2) afin de rétroéclairer ledit secteur transparent ou semi-transparent (3a) de la demi-coque avant (3) ;
    le premier ensemble d'éclairage (4) comprenant : un corps réflecteur (5) qui est situé à l'intérieur du corps arrière (2) et est pourvu intérieurement d'une surface réfléchissante (5a) façonnée de manière à réfléchir la lumière incidente vers ledit secteur transparent ou semi-transparent (3a) de la demi-coque avant (3) ; au moins une rangée parmi des DEL (6) qui sont agencées à l'intérieur du corps arrière (2), à proximité du corps réflecteur (5), et orientées de manière à diriger une partie dominante/majeure de la lumière produite directement vers la surface réfléchissante (5a) dudit corps réflecteur (5) ; et au moins une plaque de guidage de la lumière (10) faite en matériau photoconducteur, qui est agencée à l'intérieur du corps arrière (2), à côté du corps réflecteur (5), avec sa paroi arrière (10b) sur un côté de la rangée de DEL (6) de manière à être éclairée par une partie mineure de la lumière émise par lesdites DEL (6)
    l'éclairage automobile (1) étant caractérisé en ce que la paroi arrière (10b) de la plaque de guidage de la lumière (10) a un profil dentelé qui comporte une série de petites dents saillantes (11) adaptées pour distribuer la lumière à l'intérieur de la plaque de guidage de la lumière (10), dans laquelle les DEL (6) du premier ensemble d'éclairage (4) sont réparties à côté de la paroi arrière (10b) de la plaque de guidage de la lumière (10) de sorte que chaque DEL (6) peut éclairer une pluralité desdites dents saillantes (11), et dans lequel chaque dent saillante (11) a une structure en forme de coin sensiblement polyédrique qui est adaptée pour réfracter puis réfléchir au moins une partie des rayons lumineux (r) entrant dans la dent saillante (11), alors que les mêmes rayons lumineux (r) sont encore à l'intérieur du corps de la dent.
  2. Éclairage automobile selon la revendication 1, dans lequel le corps réflecteur (5) a une structure sensiblement concave et les DEL (6) sont placées sensiblement au niveau de l'embouchure dudit corps réflecteur (5).
  3. Éclairage automobile selon la revendication 1 ou 2, dans lequel les DEL (6) sont alignées pour former une rangée sensiblement rectiligne.
  4. Éclairage automobile selon l'une quelconque des revendications précédentes, dans lequel chaque dent saillante (11) présente une partie prismatique supérieure qui est de forme sensiblement polyédrique et fait directement face aux DEL (6), et une partie prismatique inférieure qui est de forme sensiblement polyédrique et qui est complémentaire et opposée à ladite partie prismatique supérieure ; ladite partie prismatique supérieure étant formée de manière à dévier/réfracter, vers la partie prismatique inférieure, au moins une partie des rayons lumineux (r) pénétrant dans la dent saillante (11) ; la partie prismatique inférieure étant formée de manière à réfléchir, par réflexion interne totale et vers l'intérieur de la plaque de guidage de la lumière (10), les rayons lumineux (r) provenant de ladite partie prismatique supérieure.
  5. Éclairage automobile selon la revendication 4, dans lequel la partie prismatique supérieure de la dent saillante (11) présente une première face ou surface plane principale (11a) et une première face ou surface plane mineure (11b), qui sont contiguës et inclinées l'une par rapport à l'autre et qui sont toutes deux inclinées par rapport à la face supérieure adjacente et limitrophe de la plaque de guidage de la lumière (10).
  6. Éclairage automobile selon la revendication 5, dans lequel ladite première face ou surface plane majeure (11a) et ladite première face ou surface plane mineure (11b) sont sensiblement en forme de parallélogramme.
  7. Éclairage automobile selon la revendication 5 ou 6, dans lequel la partie prismatique inférieure de la dent saillante (11) présente une seconde face ou surface plane principale (11c) et une seconde face ou surface plane mineure (11d), qui sont contiguës et inclinées l'une par rapport à l'autre et qui sont toutes deux inclinées par rapport à la face inférieure adjacente et limitrophe de la plaque de guidage de la lumière (10) ; ladite seconde face ou surface plane principale (11c) de la dent saillante (11) étant alignée et inclinée par rapport à la première face ou surface plane principale (11a) sus-jacente de la dent saillante (11) ; ladite seconde face ou surface plane mineure (11d) de la dent saillante (11) étant alignée et inclinée par rapport à la première face ou surface plane mineure (11b) sus-jacente de la dent saillante (11).
  8. Éclairage automobile selon la revendication 7, dans lequel ladite seconde face ou surface plane principale (11c) et ladite seconde face ou surface plane mineure (11d) sont sensiblement en forme de parallélogramme.
  9. Éclairage automobile selon l'une quelconque des revendications 5 à 8, dans lequel au moins ladite première face ou surface plate majeure (11a) de la dent saillante (11) est adaptée pour dévier/réfracter les rayons lumineux incidents (r) vers la partie prismatique sous-jacente de la dent saillante (11).
  10. Éclairage automobile selon la revendication 7, 8 ou 9, dans lequel au moins ladite seconde face ou surface plane majeure (11c) de la dent saillante (11) est adaptée pour réfléchir, vers l'intérieur de la plaque de guidage de la lumière (10), les rayons lumineux (r) provenant de ladite partie prismatique supérieure de la dent saillante (11).
  11. Éclairage automobile selon la revendication 10, dans lequel ladite seconde face ou surface plane majeure (11c) et ladite seconde face ou surface plane mineure (11d) sont adaptées pour dévier la lumière à l'intérieur du corps de la plaque de guidage de la lumière (10) dans deux directions différentes et distinctes l'une de l'autre.
  12. Éclairage automobile selon l'une quelconque des revendications précédentes, dans lequel chaque DEL (6) émet au moins 50 % de l'énergie lumineuse produite à l'intérieur d'un cône d'émission maximale d'une largeur donnée, et ledit cône d'émission maximale est tourné/orienté vers la surface réfléchissante (5a) du corps de réflecteur (5) ; la partie mineure de la lumière émise par lesdites DEL (6) étant extérieure audit cône d'émission maximale.
  13. Éclairage automobile selon la revendication 12, dans lequel le cône d'émission maximale de la DEL (6) a un angle d'ouverture (α) inférieur à 90°.
  14. Éclairage automobile selon la revendication 12 ou 13, dans lequel la paroi arrière (10b) de la plaque de guidage de la lumière (10) est agencée à proximité de la rangée de DEL (6), de manière à ne recevoir sensiblement que les rayons lumineux (r) extérieurs audit cône d'émission maximale des DEL (6).
  15. Éclairage automobile selon l'une quelconque des revendications précédentes, dans lequel la surface réfléchissante (5a) du corps de réflecteur (5) est sensiblement concave.
  16. Éclairage automobile selon la revendication 15, dans lequel la surface réfléchissante (5a) du corps réflecteur (5) est formée de manière à réfléchir la lumière incidente vers le secteur transparent ou semi-transparent faisant face (3a) de la demi-coque avant (3), avec une composante dominante/majeure du faisceau lumineux sensiblement parallèle à un axe de référence de l'ensemble d'éclairage (A), lequel axe est agencé sensiblement parallèlement à l'axe longitudinal du véhicule lorsque l'éclairage automobile (1) est monté/placé sur le véhicule.
  17. Éclairage automobile selon la revendication 16, dans lequel la plaque de guidage de la lumière (10) s'étend vers la demi-coque avant (3) tout en restant au moins pour une partie sensiblement parallèle audit axe de référence de l'ensemble d'éclairage (A).
  18. Éclairage automobile selon la revendication 17, dans lequel la plaque de guidage de la lumière (10) est sensiblement pliée en L de manière à s'étendre également au moins partiellement dans l'espace/volume vide délimité à l'arrière par la surface réfléchissante (5a) du corps de réflecteur (5) et à l'avant par ledit secteur transparent ou semi-transparent (3a) de la demi-coquille avant (3).
EP20217954.5A 2020-12-31 2020-12-31 Phare automobile Active EP4023935B1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4937649B2 (ja) 2006-06-28 2012-05-23 株式会社小糸製作所 車両用灯具
KR101232297B1 (ko) * 2010-12-06 2013-02-15 에스엘 주식회사 차량용 램프
US20140268848A1 (en) * 2013-03-15 2014-09-18 Osram Sylvania Inc. Headlamp having a light guide assembly
EP2921410B1 (fr) * 2014-03-18 2017-01-04 Goodrich Lighting Systems GmbH Structure d'éclairage pour unité lumineuse extérieure d'un véhicule et unité lumineuse extérieure d'un véhicule le comprenant
JP6381113B2 (ja) * 2014-07-14 2018-08-29 株式会社小糸製作所 車両用灯具
WO2018129841A1 (fr) * 2017-01-12 2018-07-19 上海小糸车灯有限公司 Photoconducteur transparent ayant une fonction de protection contre la lumière, et son application
IT201800002897A1 (it) * 2018-02-21 2019-08-21 Automotive Lighting Italia Spa Dispositivo di illuminazione e/o segnalazione automobilistico con porzioni illuminanti segmentate

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