EP1030998B1 - Motor vehicle headlight equipped with a lamp and improved electromagnetic shielding means - Google Patents

Motor vehicle headlight equipped with a lamp and improved electromagnetic shielding means 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
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EP
European Patent Office
Prior art keywords
lamp
connector
holder
mirror
headlight according
Prior art date
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Expired - Lifetime
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EP99940233A
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German (de)
French (fr)
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EP1030998A1 (en
Inventor
Gérard Billot
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Valeo Vision SAS
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Valeo Vision SAS
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    • 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.

Abstract

The invention concerns a motor vehicle headlight comprising a mirror (10) whereon is fixed a lamp-holder (50) for mounting a discharge lamp (20), and a high voltage connector (60) capable of being directly mounted on the lamp (20) fixed in the lamp-holder to supply said lamp with power. The invention is characterised in that the mirror has an electrically conductive layer, the lamp-holder (50) has a metal part fixed on the mirror so as to be in electric contact with said layer, the connector has a shielding metal case, and said lamp-holder part and/or the connector has at least an elastically deformable conductor blade (51) for ensuring electrical continuity between said lamp-holder part (50) and the connector (60) when said connector is mounted. The invention is applicable to electromagnetic compatibility of discharge lamp headlights.

Description

La présente invention a trait d'une façon générale aux projecteurs de véhicules automobiles équipés d'une lampe à décharge.The present invention relates generally to motor vehicle headlamps equipped with a discharge lamp.

Les lampes à décharge notamment du type à halogénure métallique (typiquement iodure de sodium) sont de plus en plus fréquemment utilisées comme sources lumineuses dans de tels projecteurs.Discharge lamps, in particular of the metal halide type (typically sodium iodide), are more and more frequently used as light sources in such projectors.

Elles jouissent en effet de l'avantage appréciable de pouvoir, à puissance consommée comparable, fournir une intensité lumineuse bien plus importante que dans le cas des lampes à filament à halogène classiques.They enjoy in fact the appreciable advantage of being able, at comparable power consumption, to provide a much higher luminous intensity than in the case of conventional halogen filament lamps.

Ces lampes présentent toutefois l'inconvénient d'engendrer, au niveau de leur arc, des champs électromagnétiques qui posent un grave problème ,vis-à-vis des exigences de compatibilité électromagnétique, tant en émission qu'en réception, généralement imposées par les cahiers des charges. On observera à cet égard que, par le développement des circuits électroniques assurant certaines fonctions de sécurité à bord d'un véhicule, ces exigences sont aujourd'hui de plus en plus sévères.However, these lamps have the disadvantage of generating, at their arc, electromagnetic fields that pose a serious problem, vis-à-vis the requirements of electromagnetic compatibility, both transmission and reception, generally imposed by the notebooks charges. It will be observed in this regard that, by the development of electronic circuits providing certain safety functions on board a vehicle, these requirements are today more and more severe.

II existe certes des dispositions pour blinder autant que possible une lampe à décharge et ses circuits d'alimentation, mais de telles dispositions généralement sont incompatibles avec l'environnement spécifique d'un projecteur de véhicule automobile. Ainsi par exemple, il est impossible de disposer l'ensemble du projecteur dans une cage de Faraday l'entourant complètement, car il est nécessaire de laisser libre la région de sortie de lumière au niveau de la glace.While there are provisions to shield as much as possible a discharge lamp and its supply circuits, but such provisions are generally incompatible with the specific environment of a motor vehicle headlamp. For example, it is impossible to have the entire projector in a Faraday cage completely surrounding it, because it is necessary to leave the light exit region at the ice.

Il est par ailleurs connu du document DE 197 03 233 un projecteur selon le preambule de la revendication 1, avec lampe à décharge, munie de moyens pour lutter contre les interférences électromagnétiques, utilisant des languettes conductrices pour assurer la continuité électrique entre le porte-lampe et le connecteur de la lampe.It is also known from the document DE 197 03 233 a projector according to the preamble of claim 1, with a discharge lamp, provided with means for combating electromagnetic interference, using conductive tabs to provide electrical continuity between the lamp holder and the lamp connector.

La présente invention vise à pallier ces limitations de l'état de la technique, et à proposer un projecteur de véhicule automobile équipé d'une lampe à décharge et de moyens de blindage perfectionnés en particulier au niveau de l'arc de la lampe, qui soient d'une construction et d'une mise en oeuvre simples.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.

Un autre objet de l'invention est d'assurer, sans intervention particulière, la continuité électrique entre un blindage de connecteur haute- tension pour lampe à décharge et d'autres composants de blindage du projecteur, dès lors que le connecteur est mis en place.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. .

L'invention propose à cet effet un projecteur de véhicule automobile, comprenant un miroir sur lequel est fixé un porte-lampe pour le montage d'une lampe à décharge, et un connecteur haute-tension apte à être rapporté sur la lampe montée dans le porte-lampe pour assurer l'alimentation électrique de ladite lampe, caractérisé en ce que le miroir possède une couche électriquement conductrice, en ce que le porte-lampe possède une partie métallique fixée sur le miroir de façon à être en contact électrique avec ladite couche, en ce que le connecteur possède une enveloppe métallique de blindage, et en ce que le porte-lampe ou le connecteur possède au moins une languette conductrice élastiquement déformable apte à assurer la continuité électrique entre le porte-lampe et le connecteur lors du montage dudit connecteur.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.

Des aspects préférés, mais non limitatifs, du projecteur selon l'invention sont les suivants :

  • il est prévu une pluralité de languettes élastiques.
  • la ou chaque languette élastique appartient au porte-lampe.
  • la ou chaque languette élastique est réalisée d'un seul tenant avec ladite partie du porte-lampe.
  • la ou chaque languette élastique possède dans sa région d'extrémité libre un profil définissant une partie saillante en direction du connecteur, respectivement du porte-lampe.
  • ledit profil est un profil en « V ».
  • la ou chaque languette élastique s'étend sensiblement parallèlement à la direction de montage du connecteur.
  • la ou chaque languette élastique s'étend sensiblement radialement vers l'intérieur à partir d'une couronne appartenant au porte-lampe et à l'intérieur de laquelle ledit connecteur haute-tension est apte à être engagé.
  • ladite couche conductrice du miroir est appliquée sur une face arrière du miroir et, avec continuité électrique, sur une surface du miroir destinée au montage de ladite couronne.
  • ladite couche conductrice du miroir est constituée par le miroir (10) lui-même, réalisé en tôle métallique.
Preferred, but not limiting, aspects of the projector according to the invention are the following:
  • a plurality of resilient tongues are provided.
  • the or each elastic tongue belongs to the lamp holder.
  • the or each elastic tongue is made in one piece with said portion of the lamp holder.
  • the or each elastic tongue has in its free end region a profile defining a protruding portion towards the connector or the lamp holder.
  • said profile is a "V" profile.
  • the or each elastic tongue extends substantially parallel to the mounting direction of the connector.
  • the or each elastic tongue extends substantially radially inwards from a crown belonging to the lamp holder and inside which said high-voltage connector is adapted to be engaged.
  • said conductive layer of the mirror is applied to a rear face of the mirror and, with electrical continuity, on a surface of the mirror for mounting said ring.
  • said conductive layer of the mirror is constituted by the mirror (10) itself, made of sheet metal.

D'autres aspects, buts et avantages de la présente invention apparaîtront mieux à la lecture de la description détaillée suivante de formes de réalisation préférées de celle-ci, donnée à titre d'exemple non limitatif et faite en référence au dessin annexé, sur lequel :

  • la figure 1 est une vue schématique en coupe verticale axiale d'une partie d'un projecteur selon une première forme de réalisation de l'invention,
  • la figure 2 est une vue schématique en coupe verticale axiale d'une partie d'un projecteur selon une deuxième forme de réalisation de l'invention, et
  • la figure 3 est une vue schématique en coupe horizontale axiale de la partie de projecteur de la figure 2.
Other aspects, objects and advantages of the present invention will appear better on reading the following detailed description of preferred embodiments thereof, given by way of nonlimiting example and with reference to the appended drawing, in which: :
  • FIG. 1 is a diagrammatic view in vertical axial section of a part of a projector according to a first embodiment of the invention,
  • FIG. 2 is a diagrammatic view in axial vertical section of part of a projector according to a second embodiment of the invention, and
  • FIG. 3 is a diagrammatic view in axial axial section of the projector part of FIG. 2.

En référence tout d'abord à la figure 1, on a représenté un projecteur de véhicule automobile de type elliptique qui comprend de façon classique un boîtier fermé à l'avant par une glace et définissant un espace intérieur. Ces éléments n'ont pas été représentés sur les dessins par souci de simplification.Referring firstly to Figure 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.

Dans l'espace intérieur du boîtier est logé un miroir 10 du genre ellipsoïdal dans la région du premier foyer duquel est montée une lampe à décharge 20.In the interior of the housing is housed a mirror 10 of the ellipsoidal kind in the region of the first focus of which a discharge lamp 20 is mounted.

Une lentille plan convexe 40 est placée à l'avant du miroir 10 dans une relation géométrique bien déterminée, en étant reliée au miroir à l'aide d'une pièce intermédiaire 30.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.

Pour posséder une bonne stabilité de sa géométrie face aux hautes températures engendrées par la lampe allumée, le miroir 10 est réalisée en tôle emboutie de façon classique en soi, et est donc conducteur de l'électricité.To have a good stability of its geometry in view of the high temperatures generated by the lit lamp, the mirror 10 is made of stamped sheet in a conventional manner per se, and is therefore electrically conductive.

Dans la région de fond du miroir est monté un porte-lampe 50 réalisé également en un matériau conducteur. Ce porte-lampe est de préférence serti sur le bord du trou de lampe 11 du miroir 10, à l'aide de pattes 52 dont une est visible sur la figure 1, de manière à assurer une continuité électrique entre le miroir 10 et le porte-lampe 50.In the bottom region of the mirror is mounted 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.

La lampe 20 est alimentée de façon classique en soi par un connecteur haute-tension 60 rapporté de façon amovible à l'arrière du porte-lampe 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.

Ce connecteur comporte une enveloppe extérieur blindée, réalisée par exemple en tôle métallique conductrice.This connector comprises a shielded outer casing, made for example of conductive sheet metal.

Des éléments de connexion mâle-femelle (non représentés), convenablement isolés, assurent la liaison entre le connecteur 60 et la lampe 20 montée dans le porte-lampe.Male-female connection elements (not shown), suitably insulated, provide the connection between the connector 60 and the lamp 20 mounted in the lamp holder.

Afin d'assurer la continuité électrique entre le porte-lampe 50 et le connecteur haute-tension 60, le porte-lampe possède une pluralité de languettes ou griffes métalliques élastiquement déformables 51 s'étendant vers l'arrière à partir du porte-lampe est aptes à s'étendre le long de, et en contact avec l'enveloppe du connecteur 60. Dans le présent exemple, ces languettes 51 sont au nombre de cinq et possèdent dans la région de leurs extrémités arrières libres 511 un profil en forme générale de « V » dont la pointe est dirigée vers l'enveloppe du connecteur 60. La position de ces languettes au repos est telle que, lorsque le connecteur 60 est mis en place, son enveloppe sollicite ces languettes vers l'extérieur, de sorte que la force de rappel élastique ainsi créée sollicite à son tour les extrémités 511 des languettes pour qu'elles restent en contact fiable avec l'enveloppe du connecteur 60.In order to provide electrical continuity between the lamp holder 50 and the high-voltage connector 60, 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. In the present example, 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.

On réalise ainsi une continuité électrique satisfaisante entre le connecteur haute-tension 60, le porte-lampe 50, le miroir 10 et le cas échéant la pièce intermédiaire 30, et donc une bonne qualité de blindage vis-à-vis des émissions électromagnétiques perturbatrices de la lampe 20.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.

Pour terminer, la référence 70 désigne des moyens, connus en soi, de verrouillage du connecteur 60 sur le porte-lampe 50.Finally, the reference 70 designates means, known per se, for locking the connector 60 on the lamp holder 50.

On notera ici que les languettes 51 peuvent être réalisées d'un seul tenant avec le porte-lampe 50, ou être rapportées sur celui-ci et fixées par exemple par sertissage.It will be noted here that the tabs 51 can be made in one piece with the lamp holder 50, or be attached thereto and fixed for example by crimping.

On notera également que l'on peut prévoir d'autres languettes 51 de l'autre côté du porte-lampe.Note also that one can provide other tabs 51 on the other side of the lamp holder.

Le projecteur peut comporter par ailleurs un cache de lumière directe réalisé en tôle et placé en avant de la lampe 20 à l'intérieur du miroir 10.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.

Avantageusement, ce cache (non représenté) est électriquement connecté au porte-lampe, pour avantageusement compléter le blindage réalisé par les autres parties.Advantageously, this cover (not shown) is electrically connected to the lamp holder, to advantageously complete the shielding made by the other parts.

Maintenant en référence aux figures 2 et 3, on a représenté une autre forme de réalisation de l'invention, applicable en particulier aux projecteurs dont le miroir est réalisé par injection de matière thermodurcissable (projecteurs de type parabolique ou à surface réfléchissante auto-génératrice d'au moins une partie de la photométrie du faisceau).Referring now to FIGS. 2 and 3, there is shown another embodiment of the invention, applicable in particular to projectors whose mirror is made by injection of thermosetting material (parabolic-type projectors or self-generating reflective surface reflectors). at least part of the photometry of the beam).

Pour compléter le blindage de la lampe à décharge 20, le miroir 10 possède sur sa face arrière une couche électriquement conductrice 12 réalisée par exemple par surmoulage du matériau du réflecteur sur ou autour d'un insert métallique mince ou encore par dépôt physique ou chimique d'un revêtement électriquement conducteur.To complete the shield of the discharge lamp 20, 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.

Dans ce cas, la lampe à décharge 20 est fixée sur le réflecteur à l'aide d'une couronne au moins partiellement métallique, globalement désignée par la référence 50', montée sur l'extrémité postérieure annulaire d'une collerette 13 entourant le trou de lampe 11.In this case, 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.

Pour réaliser la continuité électrique entre la couche de blindage 12 et la couronne 50', ladite couche 12 est prolongée en 121 au niveau d'au moins une partie de la face externe de la collerette 13 du miroir, puis en 122 au niveau d'au moins une partie la face d'extrémité annulaire de cette même collerette,To achieve the electrical continuity between the shielding layer 12 and the ring 50 ', 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,

La couronne 50', en étant rapportée et fixée - par exemple par vissage - sur cette face d'extrémité annulaire, se trouve ainsi dans la continuité électrique de ladite couche 12.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.

De façon analogue à la forme de réalisation de la figure 1, la continuité du blindage avec le connecteur haute-tension 60 est réalisé à l'aide d'un ensemble de griffes métalliques 51 s'étendant ici en direction essentiellement radiale, vers l'intérieur, à partir de la couronne 50'.In a similar manner to the embodiment of FIG. 1, 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 '.

Ces griffes possèdent des régions d'extrémité libre en forme générale de «V » dont la pointe s'appuie contre l'enveloppe du connecteur 60.These claws have free end regions in the general shape of "V" whose tip rests against the envelope of the connector 60.

On observe par ailleurs que l'occulteur métallique 21 de la lampe 20, qui participe également à la captation des rayonnements électromagnétiques parasites, est électriquement relié à la couronne 50' par l'intermédiaire d'au moins une patte 22 réalisée de préférence d'un seul tenant avec l'occulteur et passant le long de la lampe, à l'intérieur du trou de lampe 11.It is further observed that 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.

La figure 2 illustre enfin le boîtier 80 abritant le circuit ballast de la lampe à décharge 20, relié au connecteur haute-tension 60 par l'intermédiaire d'un câble blindé 90.Finally, 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.

Ainsi, dans cette configuration également, on assure la continuité du blindage entre le connecteur 60, la couronne 50' de montage de la lampe, la couche conductrice 12 du miroir et l'occulteur 21.Thus, in this configuration also, it ensures the continuity of the shielding between the connector 60, the crown 50 'lamp mounting, the conductive layer 12 of the mirror and the shield 21.

Bien entendu, la présente invention n'est nullement limitée aux formes de réalisation décrites et représentées, mais est définie par les revendications suivantes.Of course, the present invention is not limited to the embodiments described and shown, but is defined by the following claims.

Claims (10)

  1. Motor vehicle headlight, comprising a mirror (10) onto which there is secured a lamp-holder (50) for fitting of a discharge lamp (20), and a high-voltage connector (60) which can be added onto the lamp (20) fitted in the lamp-holder, in order to ensure the electrical supply of the said lamp:
    - the mirror has an electrically conductive layer (10; 12);
    - the lamp-holder (50; 50') has a metal part which is secured to the mirror, such as to be in electrical contact with the said layer;
    - the connector has a metal shielding envelope,
    characterised in that:
    - the said part of the lamp-holder and/or the connector has a plurality of resiliently deformable conductive tongues (51) which can ensure the electrical continuity between the said part of the lamp-holder (50) and the connector (60) during the fitting of the said connector, the said resilient tongues (51) having a position at rest such that, when the connector (60) is put into place, its envelope thrusts the said tongues towards the exterior, such that the resilient return force thrusts the ends of the said tongues (51).
  2. Headlight according to the preceding claim, characterised in that the conductive tongues (51) extend rearwards from the lamp-holder (50, 50') and can extend along, and in contact with, the envelope of the connector (60).
  3. Headlight according to one of the preceding claims, characterised in that the resilient tongues (51) belong to the lamp-holder (50, 50').
  4. Headlight according to one of the preceding claims, characterised in that the resilient tongues (51) are integral with the part of the lamp-holder (50; 50').
  5. Headlight according to one of the preceding claims, characterised in that the resilient tongues (51) have in their free end region (511) a profile which defines a part which projects in the direction of the connector, respectively of the lamp-holder.
  6. Headlight according to the preceding claim, characterised in that the profile is a profile in the shape of a "V".
  7. Headlight according to one of the preceding claims, characterised in that the resilient tongues (51) extend substantially parallel to the direction of fitting of the connector (60).
  8. Headlight according to one of claims 1 to 6, characterised in that the resilient tongues (51) extend substantially radially towards the interior, from a ring (50') which belongs to the lamp-holder, and inside which the said high-voltage connector (60) can be engaged.
  9. Headlight according to one of the preceding claims, characterised in that the conductive layer (12) of the mirror is applied on a rear surface of the mirror, and, with electrical continuity, on a surface of the mirror which is designed for fitting of the said ring (50').
  10. Headlight according to one of claims 1 to 8, characterised in that the said conductive layer of the mirror is constituted by the mirror (10) itself, which is made of metal plate.
EP99940233A 1998-09-21 1999-08-25 Motor vehicle headlight equipped with a lamp and improved electromagnetic shielding means Expired - Lifetime EP1030998B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9811837 1998-09-21
FR9811837A FR2783593B1 (en) 1998-09-21 1998-09-21 MOTOR VEHICLE PROJECTOR EQUIPPED WITH A DISCHARGE LAMP AND IMPROVED ELECTROMAGNETIC SHIELDING MEANS
PCT/FR1999/002039 WO2000017570A1 (en) 1998-09-21 1999-08-25 Motor vehicle headlight equipped with a lamp and improved electromagnetic shielding means

Publications (2)

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

Family

ID=9530725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99940233A Expired - Lifetime EP1030998B1 (en) 1998-09-21 1999-08-25 Motor vehicle headlight equipped with a lamp and improved electromagnetic shielding means

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065438B2 (en) † 1999-07-02 2011-01-12 Valeo Vision Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3854421B2 (en) 1999-02-23 2006-12-06 株式会社小糸製作所 Vehicle lamp having a discharge bulb
FR2816035B1 (en) 2000-10-30 2003-04-11 Valeo Vision MOTOR VEHICLE PROJECTOR WITH IMPROVED ELECTROMAGNETIC SHIELDING MEANS
FR2843445B1 (en) * 2002-08-08 2005-05-27 Valeo Vision PROJECTOR DEVICE EQUIPPED WITH A COMPLEMENTARY MODULE FOR A MOTOR VEHICLE
FR2850729B1 (en) * 2003-02-04 2006-03-17 Valeo Vision PROJECTOR DEVICE EQUIPPED WITH AN INSERTIONABLE COMPLEMENTARY MODULE FOR A MOTOR VEHICLE
FR2852381B1 (en) * 2003-03-14 2005-05-27 Valeo Vision SHIELDING DEVICE FOR CONNECTION BETWEEN A PROJECTOR AND A COMPLEMENTARY MODULE
DE10322627A1 (en) * 2003-05-20 2004-12-09 Hella Kgaa Hueck & Co. Headlights for vehicles
FR2855712B1 (en) * 2003-05-26 2005-07-15 Valeo Vision ACTUATOR EQUIPPED WITH AN ELECTRONIC CARD WITH ARRANGEMENT FOR LIMITING ELECTROMAGNETIC RADIATION
FR2895063A1 (en) * 2005-12-20 2007-06-22 Valeo Vision Sa PROJECTOR LAMP DOOR EQUIPPED WITH CLIPS ORIENTED TANGENTIALLY WITH RESPECT TO THE WALL OF THE LAMP DOOR
FR2922714B1 (en) * 2007-10-19 2010-03-12 Valeo Vision ELECTRICAL SUPPLY DEVICE FOR A DISCHARGE LAMP COMPRISING A BALLAST SHIELD AND A BEAM SHIELD CONNECTED IN PARLLELE TO A COMMON POTENTIAL
JP5186473B2 (en) * 2009-12-11 2013-04-17 住友電装株式会社 Automotive headlamp

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Publication number Priority date Publication date Assignee Title
DE4141587A1 (en) * 1991-12-17 1993-06-24 Bosch Gmbh Robert Motor vehicle headlamp with conductive track around sleeve - is safeguarded by automatic disconnection of high=voltage supply to discharge lamp when sleeve is broken
DE4310307B4 (en) * 1993-03-30 2004-10-14 Robert Bosch Gmbh Headlights for vehicles
US5879073A (en) 1996-01-29 1999-03-09 Koito Manufacturing Co., Ltd. Vehicular lamp having discharge bulb
JP3159078B2 (en) * 1996-08-30 2001-04-23 株式会社デンソー High pressure discharge lamp device
FR2769072B1 (en) * 1997-09-26 1999-12-24 Valeo Vision MOTOR VEHICLE PROJECTOR EQUIPPED WITH A DISCHARGE LAMP AND IMPROVED ELECTROMAGNETIC SHIELDING MEANS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065438B2 (en) † 1999-07-02 2011-01-12 Valeo Vision Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding

Also Published As

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

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