EP1632710B1 - Streifenförmige(r) Scheinwerfer oder Signalleuchte mit einem Stufenreflektor - Google Patents

Streifenförmige(r) Scheinwerfer oder Signalleuchte mit einem Stufenreflektor Download PDF

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Publication number
EP1632710B1
EP1632710B1 EP05291597A EP05291597A EP1632710B1 EP 1632710 B1 EP1632710 B1 EP 1632710B1 EP 05291597 A EP05291597 A EP 05291597A EP 05291597 A EP05291597 A EP 05291597A EP 1632710 B1 EP1632710 B1 EP 1632710B1
Authority
EP
European Patent Office
Prior art keywords
light
plane
screen
light source
distribution screen
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
EP05291597A
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English (en)
French (fr)
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EP1632710A3 (de
EP1632710A2 (de
Inventor
Patrice Collot
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
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Valeo Vision SAS
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1632710A2 publication Critical patent/EP1632710A2/de
Publication of EP1632710A3 publication Critical patent/EP1632710A3/de
Application granted granted Critical
Publication of EP1632710B1 publication Critical patent/EP1632710B1/de
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
    • 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • 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
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • 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
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations

Definitions

  • the present invention relates to a searchlight or signaling of a motor vehicle, which is intended to provide a regulatory lighting or signaling beam directed generally forwardly along a longitudinal optical axis, comprising a light source, a first and a second reflector which is arranged laterally, with respect to the longitudinal direction, on either side of the light source, and which reflects the light rays emitted by the source generally longitudinally forwards, on the rear face of a light source; distribution screen which is arranged longitudinally vis-à-vis the reflectors so as to spread at least laterally the light rays to form the regulatory beam, of the type in which the distribution screen has generally the shape of a strip stretched in the direction of its length, at least one reflector being constituted by an echelon plane, the echelon plane comprises a series of substantially parallel return facets, a first optical element (38) being interposed in the path of the light rays emitted by the light source (16) between the light source (16) and the step plane (20), the first optical element (38) being
  • Such a projector is known for example from the document EP-A-0 299 091 .
  • Vehicle manufacturers are particularly interested in this type of light because they integrate aesthetically and aerodynamically into the vehicle line.
  • EP-B-0290347 describes and represents an example of linear fire design having an almost homogeneous illuminating surface.
  • this fire design does not provide a sufficiently high luminous flux to perform certain regulatory functions, especially in the case of lights arranged in the front of the vehicle.
  • this fire design involves cutting-edge techniques for the production of parts constituting fire, including an exit screen having on its inner face teeth working in total reflection.
  • the present invention aims to overcome these disadvantages by providing a fire with improved light output.
  • the invention proposes a lighting or signaling projector of the type described above, in which the first optical element is a Fresnel element, and the first reflector is a step plane and the second reflector is a mirror overall. parabolic, the light source being arranged substantially in the focus of the dish.
  • FIG 1 schematically shows the front face of a motor vehicle 10 which is equipped with two signal lights, respectively right 12 and left 14, made in accordance with the teachings of the invention.
  • Each of these lights 12, 14 fills, for example, a direction indicator function and therefore carries a corresponding lighting regulatory beam, along a longitudinal optical axis X1 facing forward and substantially parallel to the longitudinal axis X0 of the vehicle 10.
  • FIG. 2 shows in detail the right signal light 12.
  • the orientation of the optical axis X1 from the back to the front corresponds to an orientation of the left to the right, when we consider the figure 2 , the left side of the light 12 at the top of the figure 2 and the right side is at the bottom of the figure 2 .
  • the light 12 comprises a light source 16 which is constituted here by the filament of a lamp 18.
  • the lamp 18 is inserted axially into a complementary housing 19 in an axial direction X3 which is contained in a horizontal plane and which is slightly inclined relative to a transverse direction.
  • the light 12 has a first 20 and a second 22 reflectors which are arranged laterally, with respect to the optical axis X1, on either side of the light source 16, respectively to the right and to the left of the latter 16.
  • the reflectors 20, 22 reflect the light rays emitted by the source 16 generally longitudinally forward, on the rear face 23 of a distribution screen 24 which is arranged longitudinally vis-à-vis the reflectors 20, 22.
  • the distribution screen 24 has the overall shape of a strip which extends in the direction of its length, generally following a generatrix-shaped arc, contained in a horizontal plane.
  • the width of the distribution screen 24 is therefore less than its length.
  • the distribution screen 24 has a left-hand lateral end 26 which is arranged on the side of the longitudinal axis X 0 of the vehicle 10, in front of the light 12, and a right-hand lateral end 28 which is arranged on the side of the right side of the vehicle 10 , longitudinally behind the left end 26.
  • the distribution screen 24 generally matches the rounded shape of the body portion of the vehicle 10 in which it is arranged. Consequently, the arc of a circle drawn by the distribution screen 24 tends to approach towards the rear in a longitudinal direction.
  • the first reflector 20 is constituted by a stepped plane.
  • the stepped plane 20 extends here in a substantially vertical plane which is inclined with respect to a transverse plane, the left lateral end 34 of the stepped plane 20 being offset longitudinally forwards relative to the right lateral end 36 .
  • the front face 30 of the echelon plane 20 comprises a series of vertically reflecting reflective facets 32 oriented globally forwards.
  • the step plane 20 is inclined with respect to a plane transverse to the optical axis from the rear of the light source 16 to form the left-hand lateral end 34 to the right-hand lateral end 36. back of the edge of the output screen 28.
  • a first Fresnel optical element said first lens 38, is interposed on the path of the light rays emitted by the source 16, between the source 16 and the front face 30 of the step plane 20.
  • the first lens 38 extends here in a substantially vertical plane, which generally describes an acute angle with the front face 30 of the echelon plane 20.
  • the refractive dioptric elements 42 which are arranged on the optical exit face 40 of the first lens 38, form concentric crowns or crown sectors here centered on a secondary optical axis X 2 passing through the light source 16 and passing through the front face 30 of the stepped plane 20.
  • the secondary optical axis X2 thus forms an incidental general direction which is directed towards the front face 30 of the step plane 20.
  • the light rays collected by the optical input face 44 of the first lens 38 are straightened along the secondary optical axis X2 so as to allow the reflection of these light rays on the facets 32 in longitudinal directions oriented towards the front.
  • the second reflector 22 is constituted by a generally parabolic mirror, the source 16 being arranged substantially at the focus of the dish.
  • the parabolic mirror 22 extends in its useful reflection surface from the right-hand lateral end 45, on the source side 16, to its left-hand lateral end 47 behind the end 26 of the exit screen in the direction of the optical axis.
  • a second Fresnel optical element, said second lens 46, is interposed between the source 16 and the rear face 23 of the distribution screen 24 so as to longitudinally straighten the light rays which are emitted by the source 16 directly to the screen 24, without being reflected by the reflectors 20, 22.
  • the second lens 46 is made similarly to the first lens 38. It extends here in a transverse plane substantially perpendicular to the optical axis X1.
  • the second lens 46 is here shifted longitudinally forwards with respect to the front end edge of the first lens 38.
  • the second lens 46 extends laterally towards the longitudinal axis X0 of the vehicle 10 by a transparent portion 47 which passes the light rays emitted by the source 16 without deflecting them, so that they reach the parabolic mirror 22 and so that they are reflected longitudinally forward.
  • the front face 48 of the distribution screen 24 comprises optical diffusion elements 50 which laterally distribute the light rays received on its rear face 23 so that the photometric characteristics of the signaling beam are in accordance with the regulations.
  • optical diffusion elements 50 are, for example, constituted by a series of torus-shaped cushions whose profile is optimized to distribute the light rays in the regulatory beam.
  • the diffusion optical elements 50 have profiles which are very marked on the side of the left-hand lateral end 26 and which soften toward the rear lateral end 28. This makes it possible to take account of the greater inclination of the screen 24 with respect to the optical axis X1, on the side of the right lateral end 28.
  • the various elements constituting the light 12 are contained in a housing 52 which is closed at the front by a non-deflecting protective glass 54 of similar profile to the distribution screen 24.
  • the protective glass 54 is transparent or has optical elements which must be taken into account to calculate the optical distribution elements of the screen 24.
  • the screen 24 and the protective glass 54 can be combined into a single component, which reduces the cost of the device.
  • the screen 24 comprises a first lateral section, or left section 56, which receives the light rays reflected by the parabolic mirror 22, a second lateral section, or right section 58, which receives the light rays reflected by the plane to rungs 20, and an intermediate section 60, arranged between the two lateral sections 56, 58, which receives the light rays rectified by the second lens 46.
  • the arrangement of the stepped plane 20 behind the source 16 makes it possible to produce a signaling light comprising a straight section 58 strongly curved towards the rear and to the right.
  • the generatrix of the distribution screen 24 extends generally in a horizontal plane.
  • the generatrix of the distribution screen 24 can take various curved and / or inclined shapes that are not contained in a horizontal plane.
  • the rearmost segment always corresponds to the portion of the fire 12 having the step plane 20.
  • each reflector 20, 22 is always arranged longitudinally vis-à-vis -vis the corresponding section 56, 58, 60 of the distribution screen 24.
  • the right lateral section 58 can both be bent backwards and upwards, from the intermediate section 60.
  • the edges of the step plane 20 connecting its two lateral ends 34, 36 follow the curve drawn by the right lateral section 58 of the screen 24 in a transverse vertical plane.
  • the generatrix of the distribution screen 24 may be contained generally in a longitudinal vertical plane.
  • the signaling light 12 according to the invention has a particularly good light output, while having a good light homogeneity on the entire front face 48 of the distribution screen 24.
  • the left signaling light 14 of the vehicle 10 is symmetrically made to the right signaling light 12, with respect to a vertical longitudinal plane of symmetry.
  • the projector according to the invention produces a regulatory beam of unbreakable lighting such as a beam of driving light.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)

Claims (8)

  1. Scheinwerfer oder Signalleuchte (12) für Kraftfahrzeuge (10), der bzw. die zum Ausführen eines vorschriftsmäßigen Beleuchtungs- oder Lichtsignalbündels vorgesehen ist, das allgemein nach vorne entlang einer optischen Längsachse (X1) gerichtet ist, mit einer Lichtquelle (16), einem ersten (20) und einem zweiten (22) Reflektor, die bezüglich der Längsrichtung (X1) seitlich beidseits der Lichtquelle (16) angeordnet sind und die die von der Lichtquelle (16) allgemein in Längsrichtung nach vorne emittierten Lichtstrahlen auf die Rückseite (23) eines Verteilungsschirms (24) reflektieren, der in Längsrichtung gegenüber den Reflektoren (20, 22) so angeordnet ist, dass die Lichtstrahlen wenigstens seitlich aufgefächert werden, um das vorschriftsmäßige Lichtbündel zu bilden, des Typs, bei dem der Verteilungsschirm (24) allgemein die Form eines seiner Länge nach gestreckten Bandes hat, wobei wenigstens ein Reflektor (20) durch eine Stufenebene gebildet ist, wobei die Stufenebene (20) eine Reihe im Wesentlichen paralleler Reflexionsfacetten (32) aufweist, wobei ein erstens Optikelement (38) im Lichtweg der von der Lichtquelle (16) emittierten Lichtstrahlen zwischen der Lichtquelle (16) und der Stufenebene (20) eingefügt ist, wobei das erste Optikelement (38) zum Ausrichten der von der Lichtquelle (16) emittierten Lichtstrahlen in ein im Wesentlichen paralleles Lichtbündel vorgesehen ist, das auf die Stufenebene (20) gerichtet ist, welche die Lichtstrahlen durch Reflexion in eine nach vorne gerichtete Längsrichtung zurückstrahlt,
    dadurch gekennzeichnet, dass das erste Optikelement (38) ein Fresnel-Element (38) ist, und dass der erste Reflektor (20) eine Stufenebene ist und der zweite Reflektor (22) ein allgemein parabolischer Spiegel ist, wobei die Lichtquelle (16) im Wesentlichen im Brennpunkt der Parabel angeordnet ist.
  2. Scheinwerfer (12) nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass die Stufenebene (20) bezüglich einer zur optischen Achse quer verlaufenden Ebene von der Rückseite der Lichtquelle (16) zum Rand des Austrittsschirms solchermaßen geneigt ist, dass dieser bis zum Rand beleuchtet wird.
  3. Scheinwerfer (12) nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass ein zweites Fresnel-Optikelement (46) so zwischen der Lichtquelle (16) und der Rückseite (23) des Verteilungsschirms (24) eingefügt ist, dass die Lichtstrahlen, die von der Lichtquelle (16) unmittelbar zum Schirm (24) emittiert werden und welche die Reflektoren (20, 22) nicht zu erreichen vermögen, in Längsrichtung ausgerichtet werden.
  4. Scheinwerfer (12) nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass eine Seite oder die Seiten des Verteilungsschirms (24) Optikelemente aufweisen, die das Licht verteilen, um das vorschriftgemäße Lichtbündel zu bilden.
  5. Scheinwerfer (12) nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der Verteilungsschirm (24) durch eine Erzeugende erzeugt ist, die unterschiedliche gekrümmte und/oder geneigte Formen annehmen kann, die außerhalb einer Horizontalebene liegen.
  6. Scheinwerfer (12) nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass der am weitesten hinten gelegene Abschnitt dem Teil der Leuchte (12) entspricht, der die Stufenebene (20) aufweist.
  7. Scheinwerfer (12) nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass die Form der Reflektoren (20, 22) und die Ausrichtung der Linsen (38, 46) an die Form der Erzeugenden des Verteilungsschirms (24) so angepasst sind, dass jeder Reflektor (20, 22) stets in Längsrichtung gegenüber dem entsprechenden Abschnitt (56, 58, 60) des Verteilungsschirms angeordnet ist.
  8. Scheinwerfer (12) nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Schirm (24) in die Abschlussscheibe integriert ist.
EP05291597A 2004-09-07 2005-07-26 Streifenförmige(r) Scheinwerfer oder Signalleuchte mit einem Stufenreflektor Expired - Lifetime EP1632710B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0409478A FR2874994B1 (fr) 2004-09-07 2004-09-07 Projecteur d'eclairage ou de signalisation en forme de bandeau comportant un miroir plan a echelons

Publications (3)

Publication Number Publication Date
EP1632710A2 EP1632710A2 (de) 2006-03-08
EP1632710A3 EP1632710A3 (de) 2008-11-05
EP1632710B1 true EP1632710B1 (de) 2009-11-18

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Application Number Title Priority Date Filing Date
EP05291597A Expired - Lifetime EP1632710B1 (de) 2004-09-07 2005-07-26 Streifenförmige(r) Scheinwerfer oder Signalleuchte mit einem Stufenreflektor

Country Status (6)

Country Link
US (1) US20060050520A1 (de)
EP (1) EP1632710B1 (de)
AT (1) ATE449286T1 (de)
DE (1) DE602005017716D1 (de)
ES (1) ES2334146T3 (de)
FR (1) FR2874994B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3019116B1 (fr) * 2014-04-01 2017-11-24 Valeo Vision Dispositif lumineux avec ecran de deviation
CN103994386A (zh) * 2014-05-29 2014-08-20 江苏迅驰汽车部件有限公司 一种汽车后尾灯

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8318224D0 (en) * 1983-07-05 1983-08-03 Britax Vega Ltd Vehicle lamp assembly
US4704661A (en) * 1986-08-25 1987-11-03 General Electric Company Faceted reflector for headlamps
US4962450A (en) * 1987-01-19 1990-10-09 Reshetin Evgeny F Light signalling device
US4859043A (en) 1987-05-07 1989-08-22 Cibie Projecteurs High efficiency signal light, in particular for a motor vehicle
DE3834023A1 (de) * 1988-10-06 1990-04-12 Bosch Gmbh Robert Scheinwerfer oder signalleuchte, insbesondere fuer kraftfahrzeuge
US5081564A (en) * 1989-07-11 1992-01-14 Koito Manufacturing Co., Ltd. Vehicular lighting device
JP3214594B2 (ja) * 1994-10-17 2001-10-02 株式会社小糸製作所 自動車用灯具
DE19727982A1 (de) * 1997-07-01 1999-01-07 Hella Kg Hueck & Co Leuchte für Fahrzeuge
FR2772112B1 (fr) * 1997-12-05 2000-02-25 Valeo Vision Feu de signalisation a eclairement controle de plage eclairante, et procede de fabrication d'un ballon d'un tel feu
FR2782370B1 (fr) * 1998-08-14 2000-11-10 Valeo Vision Feu de signalisation d'eclairement homogene comprenant des plages lisses
US6280480B1 (en) * 1998-10-30 2001-08-28 Meridian Automotive Systems, Inc. Indirect illumination taillamp assembly for a vehicle
JP2000149640A (ja) * 1998-11-17 2000-05-30 Koito Mfg Co Ltd 車両用前照灯
JP3390412B2 (ja) * 2000-08-07 2003-03-24 株式会社キャットアイ ヘッドランプ
JP3390413B2 (ja) * 2000-08-07 2003-03-24 株式会社キャットアイ ヘッドランプ
JP4002077B2 (ja) * 2001-04-26 2007-10-31 株式会社小糸製作所 自動車用前照灯
JP2003100114A (ja) * 2001-09-19 2003-04-04 Koito Mfg Co Ltd 車両用灯具
US6773154B2 (en) * 2002-08-21 2004-08-10 North American Lighting, Inc. Automotive lighting device

Also Published As

Publication number Publication date
EP1632710A3 (de) 2008-11-05
EP1632710A2 (de) 2006-03-08
FR2874994A1 (fr) 2006-03-10
ATE449286T1 (de) 2009-12-15
US20060050520A1 (en) 2006-03-09
FR2874994B1 (fr) 2006-11-24
DE602005017716D1 (de) 2009-12-31
ES2334146T3 (es) 2010-03-05

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