EP1030998B1 - Kraftfahrzeugscheinwerfer mit einer lampe und einer verbesserten, elektromagnetischen abschirmung - Google Patents

Kraftfahrzeugscheinwerfer mit einer lampe und einer verbesserten, elektromagnetischen abschirmung Download PDF

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Publication number
EP1030998B1
EP1030998B1 EP99940233A EP99940233A EP1030998B1 EP 1030998 B1 EP1030998 B1 EP 1030998B1 EP 99940233 A EP99940233 A EP 99940233A EP 99940233 A EP99940233 A EP 99940233A EP 1030998 B1 EP1030998 B1 EP 1030998B1
Authority
EP
European Patent Office
Prior art keywords
lamp
connector
holder
mirror
headlight according
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
EP99940233A
Other languages
English (en)
French (fr)
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EP1030998A1 (de
Inventor
Gérard Billot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1030998A1 publication Critical patent/EP1030998A1/de
Application granted granted Critical
Publication of EP1030998B1 publication Critical patent/EP1030998B1/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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • 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
    • F21S41/17—Discharge light sources
    • F21S41/172—High-intensity discharge light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors

Definitions

  • the present invention relates generally to motor vehicle headlamps equipped with a discharge lamp.
  • Discharge lamps in particular of the metal halide type (typically sodium iodide), are more and more frequently used as light sources in such projectors.
  • metal halide type typically sodium iodide
  • the present invention aims to overcome these limitations of the state of the art, and to propose a motor vehicle headlight equipped with a discharge lamp and improved shielding means particularly at the arc of the lamp, which are of simple construction and implementation.
  • Another object of the invention is to ensure, without particular intervention, the electrical continuity between a high-voltage connector shield for a discharge lamp and other shielding components of the projector, as soon as the connector is put in place. .
  • the invention proposes for this purpose a motor vehicle headlamp, comprising a mirror on which is fixed a lamp holder for mounting a discharge lamp, and a high-voltage connector adapted to be attached to the lamp mounted in the lamp.
  • lamp holder for supplying power to said lamp characterized in that the mirror has an electrically conductive layer, in that the lamp holder has a metal part fixed to the mirror so as to be in electrical contact with said layer , in that the connector has a metal shielding casing, and in that the lamp-holder or the connector has at least one elastically-deformable conductive tongue capable of ensuring electrical continuity between the lamp-holder and the connector during mounting of said connector.
  • FIG. 1 there is shown a motor vehicle headlight elliptical type which conventionally comprises a housing closed at the front by an ice and defining an interior space. These elements have not been shown in the drawings for the sake of simplification.
  • a mirror 10 of the ellipsoidal kind in the region of the first focus of which a discharge lamp 20 is mounted.
  • a convex plane lens 40 is placed at the front of the mirror 10 in a well-defined geometric relation, being connected to the mirror by means of an intermediate part 30.
  • the mirror 10 is made of stamped sheet in a conventional manner per se, and is therefore electrically conductive.
  • a lamp holder 50 also made of a conductive material.
  • This lamp holder is preferably crimped on the edge of the lamp hole 11 of the mirror 10, using tabs 52, one of which is visible in FIG. 1, so as to ensure electrical continuity between the mirror 10 and the door -lamp 50.
  • the lamp 20 is fed in conventional manner by a high-voltage connector 60 removably attached to the rear of the lamp holder 50.
  • This connector comprises a shielded outer casing, made for example of conductive sheet metal.
  • Male-female connection elements (not shown), suitably insulated, provide the connection between the connector 60 and the lamp 20 mounted in the lamp holder.
  • the lamp holder has a plurality of resiliently deformable metal tongues or tabs 51 extending rearward from the lamp holder. able to extend along and in contact with the envelope of the connector 60.
  • these tabs 51 are five in number and have in the region of their free rear ends 511 a generally shaped profile of "V" whose tip is directed towards the envelope of the connector 60.
  • the position of these tabs at rest is such that, when the connector 60 is put in place, its envelope urges these tabs outwards, so that the The elastic restoring force thus created in turn urges the ends 511 of the tongues to remain in reliable contact with the envelope of the connector 60.
  • a satisfactory electrical continuity is thus achieved between the high-voltage connector 60, the lamp holder 50, the mirror 10 and, if appropriate, the intermediate piece 30, and therefore a good quality of shielding with respect to the disturbing electromagnetic emissions of the lamp 20.
  • the reference 70 designates means, known per se, for locking the connector 60 on the lamp holder 50.
  • tabs 51 can be made in one piece with the lamp holder 50, or be attached thereto and fixed for example by crimping.
  • the projector may also comprise a direct light cover made of sheet metal and placed in front of the lamp 20 inside the mirror 10.
  • this cover (not shown) is electrically connected to the lamp holder, to advantageously complete the shielding made by the other parts.
  • thermosetting material parabolic-type projectors or self-generating reflective surface reflectors. at least part of the photometry of the beam).
  • the mirror 10 has on its rear face an electrically conductive layer 12 made for example by overmolding the reflector material on or around a thin metal insert or by physical or chemical deposition an electrically conductive coating.
  • the discharge lamp 20 is fixed on the reflector with the aid of an at least partially metallic crown, generally designated by the reference 50 ', mounted on the annular rear end of a flange 13 surrounding the hole of lamp 11.
  • said layer 12 is extended at 121 at at least a portion of the outer face of the flange 13 of the mirror, then at 122 at the level of at least a portion of the annular end face of this same collar,
  • the ring 50 ' being attached and fixed - for example by screwing - on this annular end face, is thus in the electrical continuity of said layer 12.
  • the continuity of the shielding with the high-voltage connector 60 is achieved by means of a set of metal claws 51 extending here in a substantially radial direction towards the inside, from the crown 50 '.
  • claws have free end regions in the general shape of "V" whose tip rests against the envelope of the connector 60.
  • the metal shield 21 of the lamp 20 which also participates in the capture of parasitic electromagnetic radiation, is electrically connected to the ring 50 'via at least one tab 22 preferably made of in one piece with the concealer and passing along the lamp, inside the lamp hole 11.
  • FIG. 2 illustrates the housing 80 housing the ballast circuit of the discharge lamp 20, connected to the high-voltage connector 60 via a shielded cable 90.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (10)

  1. Kraftfahrzeugscheinwerfer mit einem Reflektor (10), an dem ein Lampenhalter (50) zum Anbringen einer Entladungslampe (20) befestigt ist, und einem Hochspannungsverbinder (60), der auf der in dem Lampenhalter angebrachten Lampe (20) aufgesetzt zu werden vermag, um die Stromversorgung der Lampe sicherzustellen, wobei
    - der Reflektor eine elektrisch leitende Schicht (10; 12) besitzt,
    - der Lampenhalter (50; 50') ein Metallteil besitzt, das auf dem Reflektor so befestigt ist, dass es mit der Schicht elektrisch in Kontakt ist,
    - der Verbinder eine Metallabschirmhülle besitzt,
    dadurch gekennzeichnet, dass
    - das Lampenhalterteil und/oder der Verbinder eine Vielzahl elastisch verformbarer, leitfähiger Zungen (51) besitzt, die bei der Montage des Verbinders die elektrische Verbindung zwischen dem Teil des Lampenhalters (50) und dem Verbinder (60) sicherzustellen vermögen, wobei die elastischen Zungen (51) eine Ruhestellung haben, derart, dass beim Anbringen des Verbinders (60) dessen Hülle die Zungen solchermaßen nach außen drückt, dass die elastische Rückstellkraft die Enden der Zungen (51) vorspannt.
  2. Scheinwerfer nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass sich die leitfähigen Zungen (51) vom Lampenhalter (50, 50') aus nach hinten erstrecken und sich längs der Hülle des Verbinders (60) und in Kontakt mit dieser zu erstrecken vermögen.
  3. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die elastischen Zungen (51) dem Lampenhalter (50, 50') zugehörig sind.
  4. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die elastischen Zungen (51) in einem Stück mit dem Teil des Lampenhalters (50; 50') ausgeführt sind.
  5. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die elastischen Zungen (51) im Bereich ihres freien Endes (511) ein Profil besitzen, das in Richtung des Verbinders bzw. des Lampenhalters einen vorspringenden Bereich bildet.
  6. Scheinwerfer nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass das Profil ein V-förmiges Profil ist.
  7. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass sich die elastischen Zungen (51) im Wesentlichen parallel zur Montagerichtung des Verbinders (60) erstrecken.
  8. Scheinwerfer nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, dass sich die elastischen Zungen (51) im Wesentlichen radial nach innen erstrecken, ausgehend von einem Ring (50'), der dem Lampenhalter zugehörig ist und in den der Hochspannungsverbinder (60) einführbar ist.
  9. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die leitende Schicht (12) des Reflektors auf einer Rückseite des Reflektors und, in elektrischer Verbindung, auf einer für die Montage des Rings (50') bestimmten Oberfläche des Reflektors aufgebracht ist.
  10. Scheinwerfer nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass die leitende Schicht des Reflektors von dem aus Metallblech ausgeführten Reflektor (10) selbst gebildet ist.
EP99940233A 1998-09-21 1999-08-25 Kraftfahrzeugscheinwerfer mit einer lampe und einer verbesserten, elektromagnetischen abschirmung Expired - Lifetime EP1030998B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9811837 1998-09-21
FR9811837A FR2783593B1 (fr) 1998-09-21 1998-09-21 Projecteur de vehicule automobile equipe d'une lampe a decharge et de moyens perfectionnes de blindage electromagnetique
PCT/FR1999/002039 WO2000017570A1 (fr) 1998-09-21 1999-08-25 Projecteur de vehicule automobile equipe d'une lampe et de moyens perfectionnes de blindage electromagnetique

Publications (2)

Publication Number Publication Date
EP1030998A1 EP1030998A1 (de) 2000-08-30
EP1030998B1 true EP1030998B1 (de) 2007-10-24

Family

ID=9530725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99940233A Expired - Lifetime EP1030998B1 (de) 1998-09-21 1999-08-25 Kraftfahrzeugscheinwerfer mit einer lampe und einer verbesserten, elektromagnetischen abschirmung

Country Status (7)

Country Link
US (1) US6390657B1 (de)
EP (1) EP1030998B1 (de)
JP (1) JP4530316B2 (de)
DE (1) DE69937391T2 (de)
ES (1) ES2296400T3 (de)
FR (1) FR2783593B1 (de)
WO (1) WO2000017570A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065438B2 (de) † 1999-07-02 2011-01-12 Valeo Vision Kfz-Scheinwerfer mit einer Gasentladungslampe und einer verbesserten, elektromagnetischen Abschirmung

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3854421B2 (ja) 1999-02-23 2006-12-06 株式会社小糸製作所 放電バルブを有する車両用灯具
FR2816035B1 (fr) 2000-10-30 2003-04-11 Valeo Vision Projecteur de vehicule automobile a moyens perfectionnes de blindage electromagnetique
FR2843445B1 (fr) * 2002-08-08 2005-05-27 Valeo Vision Dispositif projecteur equipe d'un module complementaire pour vehicule automobile
FR2850729B1 (fr) * 2003-02-04 2006-03-17 Valeo Vision Dispositif projecteur equipe d'un module complementaire encastrable pour vehicule automobile
FR2852381B1 (fr) * 2003-03-14 2005-05-27 Valeo Vision Dispositif de blindage pour une connexion entre un projecteur et un module complementaire
DE10322627A1 (de) * 2003-05-20 2004-12-09 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
FR2855712B1 (fr) * 2003-05-26 2005-07-15 Valeo Vision Actionneur equipe d'une carte electronique avec agencement de limitation des radiations electromagnetiques
FR2895063A1 (fr) * 2005-12-20 2007-06-22 Valeo Vision Sa Porte lampe de projecteur equipe de griffes orientees tangentiellement par rapport a la paroi du porte lampe
FR2922714B1 (fr) * 2007-10-19 2010-03-12 Valeo Vision Dispositif d'alimentation electrique pour une lampe a decharge comportant un blindage de ballast et un blindage de faisceau raccordes en parllele a un potentiel commun
JP5186473B2 (ja) * 2009-12-11 2013-04-17 住友電装株式会社 自動車用ヘッドランプ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141587A1 (de) * 1991-12-17 1993-06-24 Bosch Gmbh Robert Scheinwerfer fuer kraftfahrzeuge
DE4310307B4 (de) * 1993-03-30 2004-10-14 Robert Bosch Gmbh Scheinwerfer für Fahrzeuge
US5879073A (en) * 1996-01-29 1999-03-09 Koito Manufacturing Co., Ltd. Vehicular lamp having discharge bulb
JP3159078B2 (ja) * 1996-08-30 2001-04-23 株式会社デンソー 高圧放電灯装置
FR2769072B1 (fr) * 1997-09-26 1999-12-24 Valeo Vision Projecteur de vehicule automobile equipe d'une lampe a decharge et de moyens perfectionnes de blindage electromagnetique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065438B2 (de) † 1999-07-02 2011-01-12 Valeo Vision Kfz-Scheinwerfer mit einer Gasentladungslampe und einer verbesserten, elektromagnetischen Abschirmung

Also Published As

Publication number Publication date
FR2783593B1 (fr) 2000-12-29
DE69937391D1 (de) 2007-12-06
JP2002525815A (ja) 2002-08-13
ES2296400T3 (es) 2008-04-16
JP4530316B2 (ja) 2010-08-25
WO2000017570A1 (fr) 2000-03-30
EP1030998A1 (de) 2000-08-30
US6390657B1 (en) 2002-05-21
DE69937391T2 (de) 2008-07-24
FR2783593A1 (fr) 2000-03-24

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