EP3867563B1 - Lichtmodul mit zwei fotometrischen funktionen mit unterschiedlichen lichtsignaturen - Google Patents

Lichtmodul mit zwei fotometrischen funktionen mit unterschiedlichen lichtsignaturen Download PDF

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Publication number
EP3867563B1
EP3867563B1 EP19795610.5A EP19795610A EP3867563B1 EP 3867563 B1 EP3867563 B1 EP 3867563B1 EP 19795610 A EP19795610 A EP 19795610A EP 3867563 B1 EP3867563 B1 EP 3867563B1
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EP
European Patent Office
Prior art keywords
light
support plate
reflector
section
elongated section
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EP19795610.5A
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English (en)
French (fr)
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EP3867563A1 (de
Inventor
Rodolphe Peron
Filipe Videira
Gilles Moynier
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.)
PSA Automobiles SA
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PSA Automobiles SA
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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
    • F21S41/18—Combination of light sources of different types or shapes
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • 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
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • 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
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours

Definitions

  • the present invention generally relates to the field of optical lighting and signaling units for motor vehicles. It relates in particular to a light module of such an optical unit capable of providing two different photometric lighting and/or signaling functions.
  • DRL Daytime Running Light
  • This daytime running light function whose light emission color is white, must be activated automatically when the vehicle is moving forward and the main or dipped beam headlights are off in order to increase its visibility in driving conditions. day light.
  • the light modules providing this daytime running light function comprise a plurality of light-emitting diodes, commonly referred to by the English acronym LED (for "Light Emitting Diodes”) and now considered as an advantageous alternative to incandescent bulbs in terms of size, reduced electrical energy consumption, increased lifespan and freedom of style.
  • LED Light Emitting Diodes
  • These light-emitting diodes are installed on a printed circuit board commonly referred to by the English acronym PCB (for “Printed Circuit Board”) and incorporating a control device.
  • PCB for “Printed Circuit Board”
  • optical element for example, a reflector or a light guide
  • This last function implemented manually via a control member to signal the driver's desire to change the direction of the vehicle, must also respect a certain color of light emission (in this case, amber or yellow).
  • the regulatory requirements require that the daytime running lights go out as soon as a direction indicator light is actuated by the user so as to make it more visible to other users.
  • European patent application EP 2 161 494 thus discloses a light module for a vehicle headlight unit comprising a first series and a second series of light-emitting diodes respectively emitting amber-colored and white-colored light rays.
  • the two series of diodes are installed on a PCB opposite the rear edge of a substantially flat transparent body of an optical guide which receives the light rays of different colors coming from said diodes and guides them towards its front output edge.
  • the light signature of the two daytime running light and direction indicator light functions proves to be perfectly identical, which is not advantageous from a style point of view.
  • the present invention therefore aims to improve the situation.
  • a light module for a motor vehicle lighting and/or signaling optical unit comprising a plurality of point light sources arranged on at least one support plate and capable of emitting light rays of different colors to ensure different photometric functions, as well as an optical element capable of directing the path of light rays from said light sources towards a space to be illuminated; said optical element being constituted by a reflector comprising first and second elongated sections joined by a curved intermediate section, said light module comprising a first support plate extending along the internal edge of said first elongated section and carrying a first series of sources spot lights capable of emitting light rays of a first color in the direction of this first elongated section, said light module further comprising a second support plate extending along the outer edge of said second elongated section and carrying a second series of sources spot lights capable of emitting light rays of a second color in the direction of this second elongated section, said first support plate comprising an extension extending beyond said first
  • the light module according to the invention makes it possible to perform two different photometric functions (such as in particular the daytime running light and change of direction) presenting light signatures that are distinct and well delimited from each other thanks to the screen formed by the extension extending the first section.
  • the invention also relates, in a second aspect, to an optical vehicle lighting and/or signaling unit, characterized in that it comprises at least one such light module.
  • the figure 1 shows a light module 1 according to the invention intended to be integrated into a front optical unit for motor vehicle signaling to provide the daytime running light and direction change indicator light functions.
  • the light module 1 comprises two support plates 10, 20 each carrying a plurality of point light sources, as well as a reflector 30 in the shape of a chevron able to reflect the light rays emitted by these light sources towards a space to be illuminated.
  • This reflector 30 comprises a first elongated section 31 extending in a substantially horizontal direction, a second elongated section 32 extending in an oblique direction forming an obtuse angle of approximately 120° with the first section 31, as well as a intermediate curve 33 connecting the two sections 31, 32 by two of their ends.
  • the first and second elongated sections 31, 32 each have in section a similar profile of the parabolic type.
  • the reflector 30 is preferably obtained by molding from an injected thermoplastic material such as polyethylene or polypropylene, its functional face being subsequently covered with an aluminized reflective coating.
  • the first support plate 10 is formed by a printed circuit board of the PCB type (for "Printed Circuit Board” in English) extending along the inner edge of the first horizontal elongated section 31 while being fixed thereto rigidly.
  • This first support plate 10 carries a series of five first light-emitting diodes (LEDS) 40 capable of emitting light rays of white color.
  • LEDS first light-emitting diodes
  • the diodes 40 are aligned in a direction parallel to the focus axis F 1 ( figure 2 ) of the first elongated section 31 of the reflector 30 and regularly spaced from each other.
  • the second support plate 20 is also formed by a printed circuit board of the PCB type (for "Printed Circuit Board” in English) extending along the outer edge of the second oblique elongated section 32 while being fixed thereto rigidly.
  • This second support plate 10 carries a series of five second light-emitting diodes (LEDS) 50 able to alternately emit light rays of white color and amber color.
  • LEDS light-emitting diodes
  • Diodes 50 are aligned in a direction parallel to focus axis F 2 ( picture 3 ) of the second elongated section 32 of the reflector 30 and regularly spaced from each other.
  • the first support plate 10 comprises an extension 11 extending, beyond the first horizontal elongated section 31 of the reflector 30, as far as the second support plate 20, so as to constitute a screen limiting the parasitic reflections of light rays coming from the second series of diodes 50 on the curved intermediate section 33 and the first horizontal elongated section 31.
  • this extension 11 is advantageously profiled so as to be contiguous with the second support plate 20, so that no light ray coming from the diodes 50 can pass between the two support plates 10, 20.
  • This extension 11 of the support plate 10 carries a light-emitting diode 60, aligned with the first diodes 40, and capable of emitting light rays of identical color (i.e. white) to that of the rays emitted by these first diodes 40.
  • the diode 60 has an emission axis oriented in the direction of the curved intermediate section 33 so that the light rays coming from this diode are reflected by the latter towards the space to be illuminated.
  • the second support plate 20 also comprises an extension 21 extending beyond the second oblique elongated section 32 of the reflector 30, opposite the curved intermediate section 33.
  • This extension 21 of the support plate 20 carries a light-emitting diode 70, aligned with the second diodes 50, and capable of emitting light rays of identical color (ie white) to that of the rays emitted by the first diodes 40.
  • the diode 70 has an emission axis oriented in the direction of the curved intermediate section 33 so that the light rays coming from this diode are reflected by the latter towards the space to be illuminated.
  • the two support plates 10, 20 are advantageously white in color so as to redirect towards the reflector 30 the vast majority of the light rays reflected towards the latter by this reflector 30, and thus to avoid the vision of shadow zones by an observer. external looking light module 1.
  • These support plates 10, 20 are also connected to a control device, not shown, capable of managing the switching on and off of the light diodes 40, 50, 60 and 70.
  • the diodes 40, 50, 60 and 70 light up automatically by emitting white light rays towards the three sections 31, 32, 33 of the reflector 30, so as to ensure the daytime running light function.
  • This function thus has a continuous light signature in the shape of a chevron corresponding to the shape of the reflector 30.
  • this intermediate section 33 makes it possible to ensure better homogeneity of the light intensity over the whole of the reflector 30 (this intermediate section 33 would in fact be less luminous than the other two elongated sections 31, 32 if one of these two diodes was absent).
  • the diodes 40, 60 and 70 are automatically extinguished while the color of the light rays emitted by the diodes 50 in the direction of the only second elongated section oblique 32 changes from white to amber, so as to provide the direction change indicator light function.
  • This function thus has a continuous light signature of oblique elongated shape corresponding to that of the second section 32 of the reflector 30.
  • the presence of the screen formed by the extension 11 of the first support plate 10 makes it possible to precisely define the lower end of this light signature (the intermediate section 33 and the first section 31 of the reflector 30 then receiving no or almost no light rays) so as to obtain a better visual rendering and to comply with the regulations concerning the minimum height of the direction change indicator light function (this must be at least 350 mm from the ground).
  • the light-emitting diodes are replaced by other point light sources such as laser diodes.
  • the diodes of the second series are capable of emitting only light rays of amber color.
  • the number and/or the emission colors of the diodes forming the first and/or the second series of diodes are different (each of these series comprising for example between 4 and 10 aligned diodes).
  • the angle between the two elongated sections of the reflector is also different and for example between 90 and 130°.

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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)
  • Spectrometry And Color Measurement (AREA)

Claims (9)

  1. Leuchtmodul für eine optische Einheit zur Beleuchtung und/oder Signalisierung eines Kraftfahrzeugs, mit einer Vielzahl von punktförmigen Lichtquellen (40, 50, 60, 70), die auf mindestens einer Trägerplatte (10, 20) angeordnet sind und Lichtstrahlen unterschiedlicher Farben aussenden können, um unterschiedliche photometrische Funktionen zu gewährleisten, sowie mit einem optischen Element (30), das den Weg der von den Lichtquellen (40, 50, 60, 70) ausgehenden Lichtstrahlen auf einen zu beleuchtenden Raum lenken kann ; wobei das optische Element aus einem Reflektor (30) besteht, der einen ersten und einen zweiten länglichen Abschnitt (31, 32) umfasst, die durch einen gekrümmten Zwischenabschnitt (33) verbunden sind, wobei das Leuchtmodul eine erste Trägerplatte (10) umfasst, die sich entlang des Innenrands des ersten länglichen Abschnitts (31) erstreckt und eine erste Reihe von punktförmigen Lichtquellen (40) trägt, die Lichtstrahlen einer ersten Farbe in Richtung dieses ersten länglichen Abschnitts (31) aussenden können, das Leuchtmodul außerdem eine zweite Trägerplatte (20) umfasst, die sich entlang der Außenkante des zweiten länglichen Abschnitts (32) erstreckt und eine zweite Reihe von Punktlichtquellen (50) trägt, die geeignet sind, Lichtstrahlen einer zweiten Farbe in Richtung dieses zweiten länglichen Abschnitts (32) zu emittieren, wobei die erste Trägerplatte (10) eine Verlängerung (11) umfasst, die sich über den ersten länglichen Abschnitt (31) hinaus bis zur zweiten Trägerplatte (20) erstreckt, so dass sie einen Schirm bildet, der die parasitären Reflexionen von Lichtstrahlen, die von der zweiten Reihe von Punktlichtquellen (50) ausgehen, auf dem gekrümmten Zwischenabschnitt (33) und dem ersten länglichen Abschnitt (31) des Reflektors (30) begrenzt oder verhindert, dadurch gekennzeichnet, dass das freie Ende der genannten Verlängerung (11) der ersten Trägerplatte (10) so geformt ist, dass es an die genannte zweite Trägerplatte (20) anstößt.
  2. . Leuchtmodul nach Anspruch 1, dadurch gekennzeichnet, dass die Verlängerung (11) der ersten Trägerplatte (10) eine Punktlichtquelle (60) trägt, die geeignet ist, Lichtstrahlen der ersten Farbe in Richtung des gekrümmten Zwischenabschnitts (33) des Reflektors (30) zu emittieren.
  3. . Leuchtmodul nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die zweite Trägerplatte (20) auch eine Verlängerung (21) umfasst, die sich über den zweiten länglichen Abschnitt (32) des Reflektors (30) hinaus gegenüber dem gekrümmten Zwischenabschnitt (33) des letzteren verlängert, wobei die Verlängerung (21) der zweiten Trägerplatte (20) eine punktförmige Lichtquelle (70) trägt, die Lichtstrahlen der ersten Farbe in Richtung des gekrümmten Zwischenabschnitts (33) des Reflektors (30) auszusenden vermag.
  4. . Leuchtmodul nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zweite Reihe von Punktlichtquellen (50) geeignet ist, abwechselnd Lichtstrahlen der ersten Farbe und der zweiten Farbe in Richtung des zweiten länglichen Abschnitts (32) zu emittieren.
  5. . Leuchtmodul nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die erste und die zweite Trägerplatte (10, 20) weiß sind, um die überwiegende Mehrheit der Lichtstrahlen, die von diesem Reflektor zu ihnen reflektiert werden, zu dem Reflektor (30) umzuleiten.
  6. . Leuchtmodul nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der erste und der zweite längliche Abschnitt (31, 32) des Reflektors (30) im Querschnitt jeweils ein parabolisches Profil aufweisen.
  7. . Leuchtmodul nach Anspruch 6, dadurch gekennzeichnet, dass die Punktlichtquellen (40), die die erste Reihe von Punktlichtquellen bilden, in einer Richtung parallel zur Brennpunktachse (F1) des ersten länglichen Abschnitts (31) ausgerichtet sind, wobei die Punktlichtquellen (50), die die zweite Reihe von Punktlichtquellen bilden, in einer Richtung parallel zur Brennpunktachse (F2) des zweiten länglichen Abschnitts (32) ausgerichtet sind.
  8. . Leuchtmodul nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die punktförmigen Lichtquellen aus Leucht- oder Laserdioden (40, 50, 60, 70) bestehen.
  9. . Optische Einheit zur Beleuchtung und/oder Signalisierung eines Fahrzeugs, dadurch gekennzeichnet, dass sie mindestens ein Leuchtmodul nach einem der Ansprüche 1 bis 8 umfasst.
EP19795610.5A 2018-10-19 2019-10-01 Lichtmodul mit zwei fotometrischen funktionen mit unterschiedlichen lichtsignaturen Active EP3867563B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1871223A FR3087520B1 (fr) 2018-10-19 2018-10-19 Module lumineux assurant deux fonctions photometriques presentant des signatures lumineuses distinctes
PCT/FR2019/052313 WO2020079341A1 (fr) 2018-10-19 2019-10-01 Module lumineux assurant deux fonctions photométriques présentant des signatures lumineuses distinctes

Publications (2)

Publication Number Publication Date
EP3867563A1 EP3867563A1 (de) 2021-08-25
EP3867563B1 true EP3867563B1 (de) 2022-08-31

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EP19795610.5A Active EP3867563B1 (de) 2018-10-19 2019-10-01 Lichtmodul mit zwei fotometrischen funktionen mit unterschiedlichen lichtsignaturen

Country Status (5)

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EP (1) EP3867563B1 (de)
CN (1) CN112912665B (de)
ES (1) ES2927615T3 (de)
FR (1) FR3087520B1 (de)
WO (1) WO2020079341A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060285348A1 (en) * 2003-09-22 2006-12-21 Valcamp David J Vehicular light assembly
US8313223B2 (en) * 2008-03-06 2012-11-20 Honda Motor Co., Ltd. Taillight apparatus
EP2161494B2 (de) 2008-09-05 2020-04-29 HELLA GmbH & Co. KGaA Beleuchtungseinrichtung für ein Kraftfahrzeug
FR2959973B1 (fr) * 2010-05-12 2013-03-22 Valeo Vision Dispositif optique, notamment pour vehicule automobile
CN108027127B (zh) * 2015-09-14 2021-01-12 株式会社小糸制作所 车辆用灯具
CN109690176B (zh) * 2016-09-13 2021-07-09 本田技研工业株式会社 前照灯装置

Also Published As

Publication number Publication date
WO2020079341A1 (fr) 2020-04-23
FR3087520B1 (fr) 2021-04-09
EP3867563A1 (de) 2021-08-25
CN112912665A (zh) 2021-06-04
CN112912665B (zh) 2023-04-25
ES2927615T3 (es) 2022-11-08
FR3087520A1 (fr) 2020-04-24

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