EP1589282B1 - Feu pour véhicules, sous forme de plaque mince - Google Patents

Feu pour véhicules, sous forme de plaque mince Download PDF

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Publication number
EP1589282B1
EP1589282B1 EP04425280A EP04425280A EP1589282B1 EP 1589282 B1 EP1589282 B1 EP 1589282B1 EP 04425280 A EP04425280 A EP 04425280A EP 04425280 A EP04425280 A EP 04425280A EP 1589282 B1 EP1589282 B1 EP 1589282B1
Authority
EP
European Patent Office
Prior art keywords
source
light
section
primary reflector
reflecting
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.)
Expired - Lifetime
Application number
EP04425280A
Other languages
German (de)
English (en)
Other versions
EP1589282A1 (fr
Inventor
Davide Capello
Stefano c/o C.R.F. Società Consortile Bernard
Denis Bollea
Piermario Repetto
Piero Perlo
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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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 Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Priority to DE602004001128T priority Critical patent/DE602004001128T2/de
Priority to AT04425280T priority patent/ATE329204T1/de
Priority to EP04425280A priority patent/EP1589282B1/fr
Priority to ES04425280T priority patent/ES2263128T3/es
Publication of EP1589282A1 publication Critical patent/EP1589282A1/fr
Application granted granted Critical
Publication of EP1589282B1 publication Critical patent/EP1589282B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—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
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Claims (25)

  1. Système d'éclairage, en particulier feu de véhicule automobile, constitué par au moins une cellule élémentaire, chaque cellule comprenant: un module diélectrique transparent se présentant sous la forme d'une plaque (2) comportant deux faces principales opposées (I, II); une source essentiellement ponctuelle (1) installée à proximité d'une première (I) des deux faces dudit module; un réflecteur primaire (3) formé sur la seconde (II) des faces principales du module pour réfléchir une première fois la lumière provenant de la source (1), qui a traversé la plaque (2); et un réflecteur secondaire (4) formé sur la première face principale (I) dudit module pour réfléchir une seconde fois la lumière déjà réfléchie par le réflecteur primaire et la diriger à l'extérieur du module, sur le côté de ladite seconde face principale (II) de manière à la collimater dans une direction prédéterminée,
    dans lequel:
    - ledit réflecteur primaire (3) est formé de deux parties: une section centrale essentiellement courbe (A), recouverte d'une couche réfléchissante (5) qui est conçue de manière à réfléchir une partie des rayons émis par la source (1); et une section périphérique essentiellement plane et transparente (B), qui est conçue de manière à réfléchir selon une réflexion totale interne (TIR) une autre partie des rayons émis par la source (1); et
    - ledit réflecteur secondaire est constitué de deux sections: une première section (C) qui est recouverte par une couche réfléchissante et agencée pour recevoir la lumière réfléchie par ladite section centrale (A) dudit réflecteur primaire et réfléchir cette lumière en direction de ladite section transparente (B) dudit réflecteur primaire; une seconde section (D), qui est recouverte par une couche réfléchissante et est agencée de manière à recevoir la lumière réfléchie selon le mode TIR par ladite section transparente B et la réfléchir à nouveau à l'extérieur à travers ladite section B,
    caractérisé en ce que ledit réflecteur secondaire C est constitué par une multiplicité de segments de surfaces quadriques, par exemple des paraboloïdes, des ellipsoïdes ou des hyperboloïdes, réunies entre elles d'une manière discontinue,
    en ce que ledit second réflecteur D est constitué par une multiplicité de segments de surfaces quadriques, par exemple des paraboloïdes, des ellipsoïdes ou des hyperboloïdes, réunies entre elles d'une manière discontinue,
    de manière à collimater la lumière dans une direction prédéterminée inclinée par rapport à l'axe géométrique (z) de la cellule.
  2. Dispositif selon la revendication 1, caractérisé en ce que lesdites couches réfléchissantes sur les surfaces A, C et D sont des revêtements métalliques.
  3. Dispositif selon la revendication 1, caractérisé en ce que lesdites couches réfléchissantes sur les surfaces A, C et D sont des revêtements diélectriques à couches multiples.
  4. Dispositif selon la revendication 1, caractérisé en ce que ladite couche réfléchissante sur la surface A est partiellement transparente de manière à transmettre une partie de la lumière émise par la source et rencontrant ledit réflecteur primaire A.
  5. Dispositif selon la revendication 1, caractérisé en ce que ledit réflecteur primaire A est constitué par une surface obtenue au moyen de la rotation d'un segment de courbe conique considérée sous la forme d'une ligne résultant de l'intersection d'un cône avec un plan) autour d'un axe passant par la source et perpendiculaire aux faces principales de la plaque.
  6. Dispositif selon la revendication 1, caractérisé en ce que la source est positionnée à proximité du foyer de ladite courbe conique.
  7. Dispositif selon la revendication 1, caractérisé en ce que ledit segment de courbe conique est un segment de parabole dont l'axe est incliné vers l'extérieur sur un angle supérieur ou égal à l'angle de réflexion TIR.
  8. Dispositif selon la revendication 1, caractérisé en ce que ledit segment de courbe conique est un segment d'ellipse, dont le premier foyer est situé à proximité de la source.
  9. Dispositif selon la revendication 1, caractérisé en ce que ledit réflecteur primaire A est constitué par une surface qui n'est pas une surface de révolution.
  10. Dispositif selon la revendication 1, caractérisé en ce que ladite section A du réflecteur primaire et ladite section B du réflecteur primaire sont réunies entre elles de telle sorte qu' à la fois le profil et la courbure sont continus sur le lieu des points de réunion.
  11. Dispositif selon la revendication 1, caractérisé en ce que ledit réflecteur secondaire C est constitué par une multiplicité de segments de cônes dissymétriques, qui sont conçus pour collimater la lumière arrière de l'image annulaire de la source, ladite image étant générée par ladite surface de révolution du réflecteur primaire A, dans une direction prédéterminée.
  12. Dispositif selon la revendication 11, caractérisé en ce que lesdites surfaces quadriques sont des paraboloïdes de révolution dont les foyers sont situés au niveau de l'image virtuelle de la source, ladite image étant générée par la section transparente B dudit réflecteur primaire.
  13. Dispositif selon la revendication 12, caractérisé en ce que lesdits paraboloïdes de révolution possèdent des axes qui sont parallèles entre eux de manière à collimater la lumière dans une direction prédéterminée.
  14. Dispositif selon la revendication 12, caractérisé en ce que lesdits paraboloïdes de révolution possèdent des axes qui ne sont pas parallèles entre eux et sont orientés de manière à former une distribution prédéterminée de lumière.
  15. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite plaque transparente est incolore.
  16. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite plaque transparente est colorée et en ce que la coloration de chaque cellule élémentaire est telle qu'elle n'absorbe pas la lumière émise par la source dans ladite cellule.
  17. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que plus d'une source est présente dans au moins l'une desdites cellules, lesdites sources étant positionnées à proximité les unes des autres.
  18. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite source est une diode LED se présentant sous la forme d'une plaquette, c'est-à-dire sans l'emballage.
  19. Dispositif selon la revendication 18, caractérisé en ce que ladite plaquette est renfermée dans la plaque.
  20. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'épaisseur de la plaque est inférieure à 15 mm.
  21. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une seconde partie transparente est prévue dans une position correspondant au faisceau sortant de ladite plaque.
  22. Dispositif selon la revendication 21, caractérisé en ce que ladite partie transparente est colorée, tandis que ledit diélectrique constituant ladite plaque est incolore.
  23. Dispositif selon la revendication 21, caractérisé en ce que ladite partie transparente possède, sur sa surface intérieure tournée vers ladite plaque, une multiplicité de microlentilles et/ou de prismes, qui sont agencés de manière à conformer / dévier le faisceau de lumière sortant de ladite plaque.
  24. Feu pour un véhicule, notamment feux arrière, notamment feu arrière, caractérisé en ce qu'il comprend un dispositif selon l'une quelconque des revendications précédentes.
  25. Phare pour un véhicule, caractérisé en ce qu'il comprend un dispositif selon l'une quelconque des revendications 1 à 24.
EP04425280A 2004-04-21 2004-04-21 Feu pour véhicules, sous forme de plaque mince Expired - Lifetime EP1589282B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE602004001128T DE602004001128T2 (de) 2004-04-21 2004-04-21 Dünne, plattenförmige Kraftfahrzeugleuchte
AT04425280T ATE329204T1 (de) 2004-04-21 2004-04-21 Dünne, plattenförmige kraftfahrzeugleuchte
EP04425280A EP1589282B1 (fr) 2004-04-21 2004-04-21 Feu pour véhicules, sous forme de plaque mince
ES04425280T ES2263128T3 (es) 2004-04-21 2004-04-21 Faro en forma de placa delgada para vehiculos automoviles.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425280A EP1589282B1 (fr) 2004-04-21 2004-04-21 Feu pour véhicules, sous forme de plaque mince

Publications (2)

Publication Number Publication Date
EP1589282A1 EP1589282A1 (fr) 2005-10-26
EP1589282B1 true EP1589282B1 (fr) 2006-06-07

Family

ID=34932449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425280A Expired - Lifetime EP1589282B1 (fr) 2004-04-21 2004-04-21 Feu pour véhicules, sous forme de plaque mince

Country Status (4)

Country Link
EP (1) EP1589282B1 (fr)
AT (1) ATE329204T1 (fr)
DE (1) DE602004001128T2 (fr)
ES (1) ES2263128T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006008199B4 (de) * 2006-02-22 2016-02-04 Hella Kgaa Hueck & Co. Leuchteneinheit für Fahrzeuge
GB0712614D0 (en) 2007-06-29 2007-08-08 Dialight Lumidrives Ltd Improved spatial luminance
JP5152572B2 (ja) * 2008-03-24 2013-02-27 スタンレー電気株式会社 車両前照灯
NL1037239C2 (nl) * 2009-08-31 2011-03-01 Spanninga Metaal Rijwiel en achterlicht voor een rijwiel.
JP5681513B2 (ja) * 2011-02-08 2015-03-11 株式会社小糸製作所 車両用前照灯
JP5944617B2 (ja) * 2011-02-08 2016-07-05 株式会社小糸製作所 灯具ユニット
JP5707661B2 (ja) * 2011-03-25 2015-04-30 スタンレー電気株式会社 車両用灯具ユニット及び車両用灯具に用いられる導光体
CN102506322A (zh) * 2011-10-31 2012-06-20 中国科学院长春光学精密机械与物理研究所 一种用于光栅尺的平板型led高度准直照明系统
CN102588787A (zh) * 2012-02-14 2012-07-18 杭州光锥科技有限公司 基于反射透射型均匀大功率led光源
EP3036582A1 (fr) * 2013-08-22 2016-06-29 Philips Lighting Holding B.V. Système optique permettant de produire un éclairage uniforme
WO2023012651A1 (fr) * 2021-08-02 2023-02-09 Varroc Engineering Limited Ensemble de feux arrière de véhicule
DE102021129851A1 (de) 2021-11-16 2023-05-17 HELLA GmbH & Co. KGaA Lichtleiterelement für eine Beleuchtungsvorrichtung für ein Kraftfahrzeug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5980054A (en) * 1996-05-09 1999-11-09 Matsushita Electric Industrial Co., Ltd. Panel-form illuminating system
ES2168784T3 (es) * 1997-08-12 2002-06-16 Decoma Int Inc Elemento de lente birreflexiva.
DE20206829U1 (de) * 2002-04-30 2002-09-05 Automotive Lighting Reutlingen Leuchte, insbesondere Begrenzungsleuchte
FR2840388B1 (fr) * 2002-05-31 2004-07-30 Valeo Vision Feu de signalisation comportant une piece optique realisant une fonction de signalisation de maniere autonome
JP4162935B2 (ja) * 2002-07-04 2008-10-08 株式会社小糸製作所 車両用灯具
JP2004103379A (ja) * 2002-09-09 2004-04-02 Koito Mfg Co Ltd 車両用標識灯
US6896381B2 (en) * 2002-10-11 2005-05-24 Light Prescriptions Innovators, Llc Compact folded-optics illumination lens

Also Published As

Publication number Publication date
DE602004001128D1 (de) 2006-07-20
DE602004001128T2 (de) 2006-12-14
ES2263128T3 (es) 2006-12-01
EP1589282A1 (fr) 2005-10-26
ATE329204T1 (de) 2006-06-15

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