EP1065438B1 - Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding - Google Patents

Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding Download PDF

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Publication number
EP1065438B1
EP1065438B1 EP00401850A EP00401850A EP1065438B1 EP 1065438 B1 EP1065438 B1 EP 1065438B1 EP 00401850 A EP00401850 A EP 00401850A EP 00401850 A EP00401850 A EP 00401850A EP 1065438 B1 EP1065438 B1 EP 1065438B1
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EP
European Patent Office
Prior art keywords
lamp
conductive material
headlight according
shielding
connector
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
EP00401850A
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German (de)
French (fr)
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EP1065438B2 (en
EP1065438A1 (en
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
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Valeo Vision SAS
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Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Priority to DE20023527U priority Critical patent/DE20023527U1/en
Priority to EP20070007020 priority patent/EP1798466B1/en
Publication of EP1065438A1 publication Critical patent/EP1065438A1/en
Application granted granted Critical
Publication of EP1065438B1 publication Critical patent/EP1065438B1/en
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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
    • 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 generally relates to discharge lamp projectors.
  • such a projector comprises a reflector in which is mounted a discharge lamp, powered by a separate high-voltage power supply module, fixed for example in or on the housing of the projector.
  • a shielded cable connects the power module to the lamp, while the electromagnetic emissions at the lamp and its power supply module are sensed by specific shielding arrangements.
  • Discharge lamps have recently been developed characterized by the presence, in a fixed or removable base of the lamp, of all or part of the high-voltage supply circuit. This avoids the use of a power supply housing the converter circuits and high voltage, and therefore heavy and bulky, and therefore difficult to place in a motor vehicle headlight whose requirements in terms of compactness and lightness are without ceases growing. Thus, with this type of lamp, only a DC-DC converter circuit must be provided separately from the lamp, with a substantially reduced weight and bulk.
  • a difficulty that can be expected with this new type of lamp lies in the problems of electromagnetic compatibility in the power circuits associated with the lamp.
  • the present invention aims to overcome these problems of the prior art, and to provide a projector which as such, without weighing down, complicating or increasing the cost of the cost of its housing, or other elements, and without having to design the surrounding body specifically for these disturbance issues, or to meet the usual requirements for electromagnetic compatibility.
  • a motor vehicle headlamp comprising a gas discharge lamp associated with a supply circuit and mounted in a mirror, and shielding means with respect to disturbing electromagnetic emissions, said circuit power supply is received in a housing associated with the lamp at the rear thereof, the shielding means comprise a conductive material completely surrounding said housing and adapted to provide electrical continuity between a shielding braid of a cable d supply to said housing and shielding arrangements associated with the mirror, said housing being defined by a housing defining a connector adapted to cooperate with a complementary connector at the end of said power cable.
  • the present invention proposes a gas discharge lamp for a projector of Motor vehicle according to claim 31.
  • a discharge lamp 10 which comprises an outer bulb 11 housing - not illustrated and known per se - an inner bulb receiving a gas mixture and two electrodes to form a luminescent arc by a gaseous discharge phenomenon.
  • a lamp body 12 having a flange 13 intended to cooperate with appropriate bearing portions of the mirror to reference the position of the lamp therein, this body being extended to the back by a housing 14 made for example in one piece with the body, all of suitable plastic, and defining a cavity 15 for housing the electronic circuits (not shown) for feeding the lamp under the appropriate voltages.
  • This housing 14 defines in the lower part a connector 17 adapted to cooperate with a complementary connector (not shown) at the end of a shielded supply cable of the lamp 10, providing a voltage, preferably a DC voltage greater than that of the vehicle's on-board network, produced by a suitable DC / DC converter, and appropriately processed by the power supply circuits.
  • the present invention applies equally well to a lamp in which the housing is removably attached via a suitable connector to the rear of the lamp.
  • the casing 14 for the supply circuits receives a substantially continuous conducting outer casing 16 intended to pick up the parasitic electromagnetic emissions emitted by these circuits, so as to complete the shielding to which already contribute, in known manner, the mirror of the projector and a metal shield placed in the mirror in front of the lamp.
  • this envelope 16 is made in the form of a thin metal sheet attached around the casing 14.
  • this envelope is made by deposition, in particular by physical or chemical means, of at least one conductive layer 16 on the outer face of the housing.
  • this deposit it is possible to provide this deposit on the internal face of the housing, providing in this case conductive means auxiliaries so that the continuity of the shielding with the other parts of the projector, external to this housing, can be realized.
  • the thin envelope extends at 16a at the connector 17, so as to leave strictly accessible only what is necessary to ensure the cooperation of the connector 17 with its complementary connector.
  • FIG. 5 illustrates the principle of a second embodiment of the invention.
  • the lamp 10 made as previously, but with a housing 14 without shielding itself, a mirror 20 in which the lamp is mounted, and a metal shield 40.
  • the mirror 20 has, on its rear surface opposed to its reflective surface 21, a conductive layer 22 reported mechanically or deposited physically or chemically.
  • This conductive layer 22 and the concealer 40 are both, in known manner, connected to the ground to participate in the shielding vis-à-vis interfering electromagnetic emissions, mainly at the arc and the electrodes of the lamp .
  • FIG. 5 also shows a power supply cable 50 provided with a bare outer shielding braid 51 and terminating in a connector 52 capable of cooperating with the connector 17 provided on the lamp housing 14.
  • This cable preferably has, at its other end, a similar connector, capable of ensuring under the same conditions the continuity of the shielding with a conductive housing, to ground, housing the aforementioned DC-DC converter and more generally control circuits of the projector.
  • the housing 14 of the lamp which projects beyond the rear of the mirror, is received inside a conductive cover 30 attached to the rear of the mirror.
  • This cover has a main wall 31 facing the rear face and the lateral faces and upper and lower housing 14, while at its front end (right in Figure 5) open, it has facilities peripherals, such as bends 32 or claws, for providing electrical continuity with the conductive layer 22 of the mirror.
  • the cover 30 also has at its lower wall an opening surrounded by arrangements 33 such as claws, able to provide electrical contact with the bare shielding braid 51 of the cable 50.
  • arrangements 33 such as claws, able to provide electrical contact with the bare shielding braid 51 of the cable 50.
  • a conductive seal may be used.
  • the cover 30 which provides the electrical continuity between the ground shielding elements formed by the braid 51 and the conductive layer 22 of the mirror 20, while the shield 40 is connected to the conductive layer. 22 by conductive support tabs, not shown.
  • Figures 6 to 9 illustrate a possible embodiment for mounting the lamp as described above with reference to Figures 1 to 4 in a mirror.
  • the mirror has here, either in one piece, or attached to it, a bell-shaped member 23 extending at the rear of the mirror around the lamp hole, and open towards the rear.
  • the lamp is mounted in the mirror from the rear so that its casing 14 with an outer conductive layer 16 partially engages the bell 23.
  • This bell carries at its periphery a plurality of claws 231 of metal having suitable elastic properties, and for example spring steel, which are suitable, when the lamp is put in place, to bear against the conductive layer 16 of the housing 14.
  • claws are further electrically connected to the conductive layer 22 located behind the mirror 20, thereby ensuring electrical continuity of the shield between the mirror and the housing 14 of the lamp.
  • the bell 23 means for retaining the lamp 10 in position, constituted by a leaf-spring 232 or other elastic member whose one end is hingedly mounted on said bell and whose opposite end can lock on the latter on the opposite side.
  • the leaf spring 232 rests on the rear face of the housing 14 to retain the lamp in its reference position defined by the support of the collar 13 on appropriate arrangements surrounding the lamp hole of the mirror.
  • the blade spring 232 also contributes to the electrical continuity of the shielding.
  • Figure 8 illustrates in particular the pivotal mounting of the leaf spring 232 at its end 2321, and the locking of said leaf spring at its opposite end 2322.
  • Fig. 8 also shows that the claws 231 extend forward (i.e., downwardly in the figure) to join a conductive part 60 belonging to the lamp holder, which is engaged in the lamp hole of the mirror. and in contact with both the conductive layer 22 of the mirror and the shield 40 (not shown) via the fastening tabs thereof (also not shown).
  • FIG. 9 illustrates the assembly of the lamp holder PL, bearing four claws 231 and provided with arrangements 61, 62 respectively for the pivotal mounting of the retaining spring blade 232 and for locking it in the locked position.
  • one or more deformable seals of electrically conductive material may be used, capable of being compressed between the conductive surfaces between which it is a question of ensuring electrical continuity.
  • Figure 10 shows schematically, in perspective, the cooperation between the connector 17 belonging to the housing 14 of the lamp and the complementary connector 52 provided at the end of the shielded power supply cable.
  • this complementary connector 52 carries a series of resilient claws and electrically conductors 521 able to come to rest, when the connectors are assembled, against the conductive layer 16a surrounding the connector 17. This ensures electrical continuity of shielding between the outer braid 51 of the cable 50 and the conductive coating 16, 16a of the housing 14, and consequently with the other elements, mainly mirror and shield, participating in the shielding.
  • the claws 521 can be replaced or completed by a deformable gasket of electrically conductive material compressed between the surfaces between which the electrical continuity of shielding must be ensured.
  • the connectors 17 and 52 are designed so that their disconnection first causes the disconnection of the conductor or conductors carrying the supply voltage of the lamp, and only then the disconnection of the connection ensuring continuity shielding. Conversely, when the connectors 17 and 52 are assembled, the continuity to the shielding will be established before the connector or connectors of the actual power supply.
  • FIG. 11 illustrates another embodiment for mounting a lamp according to FIGS. 1 to 4 behind the mirror 20.
  • the lamp hole is surrounded by an axial flange 24, and a conductive ring 25 is mounted by example by screws on the free annular surface defined by the flange 24 at its rear end.
  • This ring 25 carries at its periphery a series of double claws 251 whose anterior part is adapted to come into contact with the conductive layer 22 formed at the rear of the mirror 20 (this conductive layer extending at 22a at the outer face of the flange 24), and a rear portion of which is capable of coming into contact with the conductive coating 16 formed on the casing 14 of the lamp 10.
  • a conductive seal can again be used here.
  • the ring 25 carries a leaf spring 252 retaining the lamp, similar to the leaf spring 232 described above.
  • Figure 12 illustrates an improvement to the retaining spring blade 242, here mounted directly on a flange 24 made in one piece with the mirror 20 or reported on it.
  • the leaf spring 242 carries an appendix 2421 intended to cap, with electrical conduction, the outer braid bare of the power cable 50. This allows in particular to achieve electrical continuity between said braid and the shield 22 of the mirror 20, whose electrical continuity with the leaf spring 242 is achieved by any suitable means.
  • FIG. 13 illustrates a particular embodiment of the mounting of the shielding cover 30 of FIG. 5 around the rear part of the lamp.
  • the lid 30 has a first appendix 34 by which it is pivotally mounted on an axis integral with the mirror, and a second appendix by which, the cover being in place by covering the lamp, it is held in position by means of a screw or the like.

Description

La présente invention concerne d'une façon générale les projecteurs à lampe à décharge.The present invention generally relates to discharge lamp projectors.

De façon classique, un tel projecteur comprend un réflecteur dans lequel est montée une lampe à décharge, alimentée par un module séparé d'alimentation à haute tension, fixé par exemple dans ou sur le boîtier du projecteur. Un câble blindé relie le module d'alimentation à la lampe, tandis que les émissions électromagnétiques au niveau de la lampe et de son module d'alimentation sont captées par des aménagements de blindage spécifiques.Conventionally, such a projector comprises a reflector in which is mounted a discharge lamp, powered by a separate high-voltage power supply module, fixed for example in or on the housing of the projector. A shielded cable connects the power module to the lamp, while the electromagnetic emissions at the lamp and its power supply module are sensed by specific shielding arrangements.

On a récemment développé des lampes à décharge caractérisées par la présence, dans une embase fixe ou amovible de la lampe, de tout ou partie du circuit d'alimentation à haute tension. On évite ainsi le recours à un boîtier d'alimentation abritant les circuits convertisseurs et de haute tension, et par conséquent lourd et encombrant, et donc difficile à placer dans un projecteur de véhicule automobile dont les exigences en termes de compacité et de légèreté sont sans cesse croissantes. Ainsi, avec ce type de lampe, seul un circuit convertisseur continu-continu doit être prévu séparément de la lampe, avec un poids et un encombrement sensiblement réduits.Discharge lamps have recently been developed characterized by the presence, in a fixed or removable base of the lamp, of all or part of the high-voltage supply circuit. This avoids the use of a power supply housing the converter circuits and high voltage, and therefore heavy and bulky, and therefore difficult to place in a motor vehicle headlight whose requirements in terms of compactness and lightness are without ceases growing. Thus, with this type of lamp, only a DC-DC converter circuit must be provided separately from the lamp, with a substantially reduced weight and bulk.

Une difficulté à laquelle on peut toutefois s'attendre avec ce nouveau type de lampe réside dans les problèmes de compatibilité électromagnétique au niveau des circuits d'alimentation associés à la lampe.A difficulty that can be expected with this new type of lamp lies in the problems of electromagnetic compatibility in the power circuits associated with the lamp.

Ainsi, pour parfaire la compatibilité électromagnétique tout autour du projecteur, il peut s'avérer nécessaire de concevoir la carrosserie avoisinante du véhicule de manière à ce qu'elle participe au blindage vis à vis des émissions électromagnétiques parasites.Thus, to perfect the electromagnetic compatibility all around the projector, it can it is necessary to design the vehicle's neighboring bodywork so that it participates in the shielding against parasitic electromagnetic emissions.

On comprend que ceci va constituer pour les constructeurs une contrainte indésirable, sachant que ceux-ci peuvent souhaiter conserver toute liberté dans la conception de la carrosserie à l'avant du véhicule. Une telle approche est en outre inapplicable dans le cas de carrosseries en matériau composite, ou plus généralement non conducteur.It will be understood that this will constitute for the manufacturers an undesirable constraint, knowing that they may wish to retain all freedom in the design of the bodywork at the front of the vehicle. Such an approach is also inapplicable in the case of bodies made of composite material, or more generally non-conductive.

Il est connu du brevet FR 2 710 131 qui comporte les caractéristiques du préambule des revendications 1 et 31, un ensemble connecteur et générateur à haute tension pour une lampe à décharge de véhicule automobile, avec un module générateur de haute tension monté dans un logement solidaire de la partie formant connecteur.It is known from patent FR 2 710 131 which comprises the features of the preamble of claims 1 and 31, a connector assembly and high voltage generator for a motor vehicle discharge lamp, with a high voltage generator module mounted in a solidarity housing of the connector portion.

La présente invention vise à pallier ces problèmes de l'art antérieur, et à proposer un projecteur qui en tant que tel, sans alourdir, compliquer ou accroître le coût de revient ni de son boîtier, ni d'autres éléments, et sans avoir à concevoir la carrosserie avoisinante de façon spécifique au regard de ces questions de perturbations, soit à même de satisfaire aux exigences habituelles en matière de compatibilité électromagnétique.The present invention aims to overcome these problems of the prior art, and to provide a projector which as such, without weighing down, complicating or increasing the cost of the cost of its housing, or other elements, and without having to design the surrounding body specifically for these disturbance issues, or to meet the usual requirements for electromagnetic compatibility.

Elle propose à cet effet, selon un premier aspect, un projecteur de véhicule automobile, comprenant une lampe à décharge gazeuse associée à un circuit d'alimentation et montée dans un miroir, et des moyens de blindage vis à vis d'émissions électromagnétiques perturbatrices, ledit circuit d'alimentation est reçu dans un logement associé à la lampe à l'arrière de celle-ci, les moyens de blindage comprennent un matériau conducteur entourant entièrement ledit logement et apte à assurer la continuité électrique entre une tresse de blindage d'un câble d'alimentation arrivant audit logement et des aménagements de blindage associés au miroir, ledit logement étant défini par un boîtier définissant un connecteur apte à coopérer avec un connecteur complémentaire à l'extrémité du dit câble d'alimentation.It proposes for this purpose, according to a first aspect, a motor vehicle headlamp, comprising a gas discharge lamp associated with a supply circuit and mounted in a mirror, and shielding means with respect to disturbing electromagnetic emissions, said circuit power supply is received in a housing associated with the lamp at the rear thereof, the shielding means comprise a conductive material completely surrounding said housing and adapted to provide electrical continuity between a shielding braid of a cable d supply to said housing and shielding arrangements associated with the mirror, said housing being defined by a housing defining a connector adapted to cooperate with a complementary connector at the end of said power cable.

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

  • ledit matériau conducteur appartient à un boîtier définissant ledit logement.
  • ledit matériau conducteur est mécaniquement rapporté à l'extérieur dudit boîtier.
  • ledit matériau conducteur est déposé sur une face extérieure dudit boîtier.
  • ledit matériau conducteur appartient à un couvercle rapporté sur l'arrière du miroir et entourant un boîtier non conducteur définissant ledit logement.
  • le projecteur comprend des premiers moyens de liaison pour assurer la continuité électrique entre ledit matériau conducteur entourant ledit logement et un second matériau conducteur de blindage prévu à la surface arrière du miroir.
  • les premiers moyens de liaison comprennent une série de griffes reliées électriquement audit second matériau conducteur et en appui contre ledit premier matériau conducteur.
  • lesdites griffes sont montées sur un porte-lampe rapporté sur le miroir.
  • les premiers moyens de liaison comprennent des aménagements d'appui dudit couvercle contre ledit second matériau conducteur à l'arrière du miroir.
  • les premiers moyens de liaison comprennent un joint déformable en matériau électriquement conducteur, interposé entre les premier et second matériaux conducteurs.
  • le joint déformable est monté sur le miroir.
  • le joint déformable est monté sur un porte-lampe rapporté sur le miroir.
  • le projecteur comprend des deuxièmes moyens de liaison pour assurer la continuité électrique entre ledit matériau conducteur entourant ledit logement et ladite tresse de blindage.
  • le boîtier de la lampe possède un premier connecteur, l'extrémité du câble d'alimentation possède un second connecteur apte à s'enficher avec le premier connecteur, et, lors de la séparation des premier et second connecteurs, lesdits deuxièmes moyens de liaison sont aptes à supprimer la continuité électrique entre ledit matériau conducteur entourant ledit logement et ladite tresse de blindage seulement après que les contacts des premier et second connecteurs véhiculant la tension d'alimentation de la lampe se sont séparés.
  • les deuxièmes moyens de liaison comprennent une série de griffes portées par ledit second connecteur, lesdites griffes étant en contact avec la tresse de blindage et avec le matériau conducteur entourant le boîtier.
  • lesdits deuxièmes moyens de liaison comprennent un joint conducteur en contact avec la tresse de blindage et avec le matériau conducteur entourant le boîtier.
  • il est prévu un moyen élastique de retenue de la lampe en position axiale, ledit moyen s'appuyant contre le matériau conducteur de blindage, et ledit moyen élastique, qui est conducteur et qui, en position de retenue, est en contact avec ladite tresse de blindage du câble, fait partie desdits deuxièmes moyens de liaison.
  • lesdits deuxièmes moyens de liaison comprennent des aménagements d'appui contre la tresse du câble d'alimentation, formés sur ledit couvercle autour d'un orifice pour le passage dudit câble.
  • le projecteur comprend un élément élastique conducteur apte à s'appuyer contre ledit matériau conducteur au niveau d'une face arrière dudit boîtier pour assurer simultanément la retenue de la lampe en direction axiale et une continuité électrique de blindage avec d'autres éléments de blindage du projecteur.
  • ledit logement fait partie intégrante de la lampe.
  • ledit logement fait partie d'un connecteur sur lequel la lampe est montée de façon amovible.
  • le projecteur comprend en outre des circuits de commande reçus dans un boîtier de commande électriquement conducteur situé à distance de la lampe, et des troisièmes moyens de liaison pour assurer la continuité électrique entre ledit boîtier de commande et la tresse du câble.
  • les troisièmes moyens de liaison comprennent un troisième connecteur prévu sur le boîtier de commande et un quatrième connecteur prévu à l'extrémité du câble d'alimentation opposée à la lampe et apte à s'enficher avec le troisième connecteur, et, lors de la séparation des troisième et quatrième connecteurs, lesdits troisièmes moyens de liaison sont aptes à supprimer la continuité électrique entre ledit boîtier de commande et ladite tresse de blindage seulement après que les contacts des troisième et quatrième connecteurs véhiculant la tension d'alimentation de la lampe se sont séparés.
Preferred, but not limiting, aspects of the projector according to the invention are the following:
  • said conductive material belongs to a housing defining said housing.
  • said conductive material is mechanically attached to the outside of said housing.
  • said conductive material is deposited on an outer face of said housing.
  • said conductive material belongs to a cover attached to the back of the mirror and surrounding a non-conductive housing defining said housing.
  • the projector comprises first connecting means for providing electrical continuity between said conductive material surrounding said housing and a second shielding conductive material provided on the rear surface of the mirror.
  • the first connecting means comprise a series of claws electrically connected to said second conductive material and bearing against said first conductive material.
  • said claws are mounted on a lamp holder attached to the mirror.
  • the first connection means comprise support arrangements of said cover against said second conductive material at the rear of the mirror.
  • the first connecting means comprise a deformable seal of electrically conductive material, interposed between the first and second conductive materials.
  • the deformable seal is mounted on the mirror.
  • the deformable seal is mounted on a lamp holder attached to the mirror.
  • the projector comprises second connecting means for providing electrical continuity between said conductive material surrounding said housing and said shielding braid.
  • the lamp housing has a first connector, the end of the power cable has a second connector adapted to be plugged with the first connector, and, upon separation of the first and second connectors, said second connecting means are capable of suppressing electrical continuity between said conductive material surrounding said housing and said shielding braid only after the contacts of the first and second connectors carrying the lamp supply voltage have separated.
  • the second connecting means comprise a series of claws carried by said second connector, said claws being in contact with the shielding braid and with the conductive material surrounding the housing.
  • said second connecting means comprises a conductive seal in contact with the shielding braid and with the conductive material surrounding the housing.
  • there is provided a resilient means for retaining the lamp in axial position, said means bearing against the conductive shielding material, and said elastic means, which is conductive and which, in the retaining position, is in contact with said braid of shielding the cable, is part of said second connecting means.
  • said second connecting means comprise support arrangements against the cable braid power supply, formed on said cover around an orifice for the passage of said cable.
  • the projector comprises a conductive elastic element able to bear against said conductive material at a rear face of said housing to simultaneously ensure the retention of the lamp in the axial direction and electrical continuity of shielding with other shielding elements of the projector.
  • said housing is an integral part of the lamp.
  • said housing is part of a connector on which the lamp is removably mounted.
  • the projector further comprises control circuits received in an electrically conductive control box remote from the lamp, and third connection means for providing electrical continuity between said control box and the cable braid.
  • the third connecting means comprise a third connector provided on the control box and a fourth connector provided at the end of the supply cable opposite the lamp and able to be plugged with the third connector, and, during the separation third and fourth connectors, said third connecting means are able to suppress the electrical continuity between said control box and said shielding braid only after the contacts of the third and fourth connectors carrying the supply voltage of the lamp have separated .

Selon un deuxième aspect, la présente invention propose une lampe à décharge gazeuse pour projecteur de véhicule automobile selon la revendication 31.According to a second aspect, the present invention proposes a gas discharge lamp for a projector of Motor vehicle according to claim 31.

D'autres aspects, buts et avantages de la présente invention apparaîtront mieux à la lecture de la description détaillée suivante de différentes formes de réalisation de celle-ci, donnée à titre d'exemple non limitatif et faite en référence aux dessins annexés, sur lesquels:

  • la figure 1 est une vue de côté d'une lampe à décharge selon une première forme de réalisation de l'invention,
  • la figure 2 est une vue de dos de la lampe de la figure 1,
  • la figure 3 est une vue de côté et partiellement en coupe de la lampe des figures 1 et 2,
  • la figure 4 est une vue de dos et partiellement en coupe de la lampe des figures 1 à 3,
  • la figure 5 est une vue de côté et partiellement en coupe d'un ensemble lampe/miroir selon une deuxième forme de réalisation de l'invention,
  • la figure 6 est une vue de côté et partiellement en coupe du montage d'une lampe selon la première forme de réalisation de l'invention dans un miroir deprojecteur,
  • la figure 7 est une vue de dos partielle illustrant un détail du montage de la figure 6,
  • la figure 8 est une vue en coupe partielle illustrant plus en détail le montage de la figure 7,
  • la figure 9 est une vue de dos d'un porte-lampe utilisé dans le montage de la figure 8,
  • la figure 10 illustre un moyen de continuité de blindage entre lampe et câble utilisé avec une lampe selon l'invention,
  • la figure 11 est une vue de côté et partiellement en coupe d'une variante de l'ensemble lampe/miroir de la figure 5,
  • la figure 12 est une vue de côté et partiellement en coupe illustrant un moyen de continuité de blindage entre lampe et câble utilisé avec une lampe selon l'invention, et
  • la figure 13 est une vue de dos schématique d'un capot arrière de miroir pouvant être utilisé dans la deuxième forme de réalisation de l'invention.
Other aspects, objects and advantages of the present invention will appear better on reading the following detailed description of various embodiments thereof, given by way of nonlimiting example and with reference to the appended drawings, in which: :
  • FIG. 1 is a side view of a discharge lamp according to a first embodiment of the invention,
  • FIG. 2 is a rear view of the lamp of FIG. 1,
  • FIG. 3 is a side view and partially in section of the lamp of FIGS. 1 and 2,
  • FIG. 4 is a view from the back and partially in section of the lamp of FIGS. 1 to 3,
  • FIG. 5 is a side view and partially in section of a lamp / mirror assembly according to a second embodiment of the invention,
  • FIG. 6 is a side view and partially in section of the mounting of a lamp according to the first embodiment of the invention in a projection mirror,
  • FIG. 7 is a partial rear view illustrating a detail of the assembly of FIG. 6,
  • FIG. 8 is a partial sectional view illustrating in more detail the assembly of FIG. 7,
  • FIG. 9 is a rear view of a lamp holder used in the assembly of FIG. 8,
  • FIG. 10 illustrates a means of continuity of shielding between lamp and cable used with a lamp according to the invention,
  • FIG. 11 is a side view and partially in section of a variant of the lamp / mirror assembly of FIG. 5,
  • Figure 12 is a side view and partially in section illustrating a means of continuity of shielding between lamp and cable used with a lamp according to the invention, and
  • Figure 13 is a schematic back view of a rear mirror cover that can be used in the second embodiment of the invention.

En référence tout d'abord aux figures 1 à 4, on a représenté une lampe à décharge 10 qui comprend un bulbe extérieur 11 abritant - de façon non illustrée et connue en soi - un bulbe intérieur recevant un mélange gazeux et deux électrodes pour former un arc luminescent par un phénomène de décharge gazeuse.Referring firstly to Figures 1 to 4, there is shown a discharge lamp 10 which comprises an outer bulb 11 housing - not illustrated and known per se - an inner bulb receiving a gas mixture and two electrodes to form a luminescent arc by a gaseous discharge phenomenon.

A l'arrière du bulbe 11 s'étend un corps de lampe 12 possédant une collerette 13 destinée à coopérer avec des parties d'appui appropriées du miroir pour référencer la position de la lampe dans celui-ci, ce corps étant prolongé à l'arrière par un boîtier 14 réalisé par exemple d'un seul tenant avec le corps, le tout en matière plastique appropriée, et définissant une cavité 15 destinée à abriter les circuits électroniques (non représentés) permettant l'alimentation de la lampe sous les tensions appropriées. Ce boîtier 14 définit en partie inférieure un connecteur 17 apte à coopérer avec un connecteur complémentaire (non illustré) à l'extrémité d'un câble blindé d'alimentation de la lampe 10, fournissant une tension, de préférence une tension continue supérieure à celle du réseau de bord du véhicule, produite par un convertisseur continu/continu approprié, et traitée de façon appropriée par les circuits d'alimentation.At the rear of the bulb 11 extends a lamp body 12 having a flange 13 intended to cooperate with appropriate bearing portions of the mirror to reference the position of the lamp therein, this body being extended to the back by a housing 14 made for example in one piece with the body, all of suitable plastic, and defining a cavity 15 for housing the electronic circuits (not shown) for feeding the lamp under the appropriate voltages. This housing 14 defines in the lower part a connector 17 adapted to cooperate with a complementary connector (not shown) at the end of a shielded supply cable of the lamp 10, providing a voltage, preferably a DC voltage greater than that of the vehicle's on-board network, produced by a suitable DC / DC converter, and appropriately processed by the power supply circuits.

On observera ici que la présente invention s'applique aussi bien à une lampe dans laquelle le boîtier est rapporté de façon amovible, par l'intermédiaire d'un connecteur approprié, à l'arrière de la lampe.It will be observed here that the present invention applies equally well to a lamp in which the housing is removably attached via a suitable connector to the rear of the lamp.

Selon une première forme de réalisation de l'invention, et comme illustré sur les figures 3 et 4, le boîtier 14 pour les circuits d'alimentation reçoit une enveloppe extérieure conductrice essentiellement continue 16 destinée à capter les émissions électromagnétiques parasite émises par ces circuits, de manière à parfaire le blindage auquel contribuent déjà, de façon connue en soi, le miroir du projecteur et un occulteur métallique placé dans le miroir en avant de la lampe.According to a first embodiment of the invention, and as illustrated in FIGS. 3 and 4, the casing 14 for the supply circuits receives a substantially continuous conducting outer casing 16 intended to pick up the parasitic electromagnetic emissions emitted by these circuits, so as to complete the shielding to which already contribute, in known manner, the mirror of the projector and a metal shield placed in the mirror in front of the lamp.

Selon un premier mode d'exécution, cette enveloppe 16 est réalisée sous forme d'une tôle métallique mince rapportée autour du boîtier 14.According to a first embodiment, this envelope 16 is made in the form of a thin metal sheet attached around the casing 14.

Selon un deuxième mode d'exécution, cette enveloppe est réalisée par dépôt, notamment par voie physique ou chimique, d'au moins une couche conductrice 16 sur la face externe du boîtier. Selon une variante, on peut prévoir de réaliser ce dépôt sur la face interne du boîtier, en prévoyant dans ce cas des moyens conducteurs auxiliaires pour que la continuité du blindage avec les autres parties du projecteur, externes à ce boîtier, puisse être réalisée.According to a second embodiment, this envelope is made by deposition, in particular by physical or chemical means, of at least one conductive layer 16 on the outer face of the housing. According to a variant, it is possible to provide this deposit on the internal face of the housing, providing in this case conductive means auxiliaries so that the continuity of the shielding with the other parts of the projector, external to this housing, can be realized.

On observe que l'enveloppe mince se prolonge en 16a au niveau du connecteur 17, de manière à ne laisser accessible strictement que ce qui est nécessaire pour assurer la coopération du connecteur 17 avec son connecteur complémentaire.It is observed that the thin envelope extends at 16a at the connector 17, so as to leave strictly accessible only what is necessary to ensure the cooperation of the connector 17 with its complementary connector.

La figure 5 illustre le principe d'une deuxième forme de réalisation de l'invention. Sur cette figure, on a illustré la lampe 10 réalisée comme précédemment, mais avec un boîtier 14 dépourvu en soi de blindage, un miroir 20 dans lequel la lampe est montée, et un occulteur métallique 40. Le miroir 20 possède, sur sa face postérieure opposée à sa surface réfléchissante 21, une couche conductrice 22 rapportée mécaniquement ou déposée par voie physique ou chimique. Cette couche conductrice 22 et l'occulteur 40 sont tous deux, de façon connue en soi, raccordés à la masse pour participer au blindage vis-à-vis des émissions électromagnétiques perturbatrices, principalement au niveau de l'arc et des électrodes de la lampe.Figure 5 illustrates the principle of a second embodiment of the invention. In this figure, there is illustrated the lamp 10 made as previously, but with a housing 14 without shielding itself, a mirror 20 in which the lamp is mounted, and a metal shield 40. The mirror 20 has, on its rear surface opposed to its reflective surface 21, a conductive layer 22 reported mechanically or deposited physically or chemically. This conductive layer 22 and the concealer 40 are both, in known manner, connected to the ground to participate in the shielding vis-à-vis interfering electromagnetic emissions, mainly at the arc and the electrodes of the lamp .

On a également représenté sur la figure 5 un câble d'alimentation 50, pourvu d'une tresse de blindage extérieure nue 51 et se terminant par un connecteur 52 apte à coopérer avec le connecteur 17 prévu sur le boîtier 14 de la lampe. Ce câble possède de préférence, à son autre extrémité, un connecteur similaire, capable d'assurer dans les mêmes conditions la continuité du blindage avec un boîtier conducteur, à la masse, abritant le convertisseur continu-continu précité et plus généralement des circuits de commande du projecteur.FIG. 5 also shows a power supply cable 50 provided with a bare outer shielding braid 51 and terminating in a connector 52 capable of cooperating with the connector 17 provided on the lamp housing 14. This cable preferably has, at its other end, a similar connector, capable of ensuring under the same conditions the continuity of the shielding with a conductive housing, to ground, housing the aforementioned DC-DC converter and more generally control circuits of the projector.

Selon la deuxième forme de réalisation de l'invention, le boîtier 14 de la lampe, qui déborde à l'arrière du miroir, est reçu à l'intérieur d'un couvercle conducteur 30 rapporté sur l'arrière du miroir.According to the second embodiment of the invention, the housing 14 of the lamp, which projects beyond the rear of the mirror, is received inside a conductive cover 30 attached to the rear of the mirror.

Ce couvercle possède une paroi principale 31 située en vis-à-vis la face arrière et les faces latérales et supérieure et inférieure du boîtier 14, tandis qu'à son extrémité avant (à droite sur la figure 5) ouverte, il présente des aménagements périphériques, tels que des coudes 32 ou des griffes, destinés à assurer une continuité électrique avec la couche conductrice 22 du miroir.This cover has a main wall 31 facing the rear face and the lateral faces and upper and lower housing 14, while at its front end (right in Figure 5) open, it has facilities peripherals, such as bends 32 or claws, for providing electrical continuity with the conductive layer 22 of the mirror.

En variante ou additionnellement, on peut interposer entre l'extrémité avant du couvercle 30 et la face arrière du miroir possédant la couche conductrice 22 un joint déformable en matériau électriquement conducteur, qui peut être monté soir sur le couvercle, soit sur le miroir.Alternatively or additionally, it is possible to interpose between the front end of the cover 30 and the rear face of the mirror having the conductive layer 22 a deformable seal of electrically conductive material, which can be mounted at night on the cover or on the mirror.

Le couvercle 30 possède également au niveau de sa paroi inférieure une ouverture entourée par des aménagements 33 tels que des griffes, aptes à assurer un contact électrique avec la tresse de blindage nue 51 du câble 50. Ici encore, un joint conducteur peut être utilisé.The cover 30 also has at its lower wall an opening surrounded by arrangements 33 such as claws, able to provide electrical contact with the bare shielding braid 51 of the cable 50. Here again, a conductive seal may be used.

On observe ici que c'est le couvercle 30 qui assure la continuité électrique entre les éléments de blindage à la masse constitués par la tresse 51 et par la couche conductrice 22 du miroir 20, tandis que l'occulteur 40 est relié à la couche conductrice 22 par des pattes de support conductrices, non représentées.It is observed here that it is the cover 30 which provides the electrical continuity between the ground shielding elements formed by the braid 51 and the conductive layer 22 of the mirror 20, while the shield 40 is connected to the conductive layer. 22 by conductive support tabs, not shown.

Les figures 6 à 9 illustrent un mode de réalisation possible pour le montage de la lampe telle que décrite plus haut en référence aux figures 1 à 4 dans un miroir.Figures 6 to 9 illustrate a possible embodiment for mounting the lamp as described above with reference to Figures 1 to 4 in a mirror.

Le miroir possède ici, soit d'un seul tenant, soit rapporté sur celui-ci, un élément 23 en forme de cloche s'étendant à l'arrière du miroir autour du trou de lampe, et ouvert vers l'arrière.The mirror has here, either in one piece, or attached to it, a bell-shaped member 23 extending at the rear of the mirror around the lamp hole, and open towards the rear.

Le lampe est montée dans le miroir par l'arrière de telle sorte que son boîtier 14 à couche conductrice extérieure 16 vienne partiellement s'engager dans la cloche 23.The lamp is mounted in the mirror from the rear so that its casing 14 with an outer conductive layer 16 partially engages the bell 23.

Cette cloche porte à sa périphérie une pluralité de griffes 231 en métal ayant des propriétés d'élasticité appropriées, et par exemple en acier à ressort, qui sont aptes, lorsque la lampe est mise en place, à venir en appui contre la couche conductrice 16 du boîtier 14.This bell carries at its periphery a plurality of claws 231 of metal having suitable elastic properties, and for example spring steel, which are suitable, when the lamp is put in place, to bear against the conductive layer 16 of the housing 14.

Ces griffes sont en outre reliées électriquement à la couche conductrice 22 située en arrière du miroir 20, pour ainsi assurer la continuité électrique du blindage entre le miroir et le boîtier 14 de la lampe.These claws are further electrically connected to the conductive layer 22 located behind the mirror 20, thereby ensuring electrical continuity of the shield between the mirror and the housing 14 of the lamp.

En outre, on prévoit avantageusement sur la cloche 23 des moyens de retenue de la lampe 10 en position, constitués par une lame-ressort 232 ou autre organe élastique dont une extrémité est montée de façon articulée sur ladite cloche et dont l'extrémité opposée peut se verrouiller sur cette dernière du côté opposé. Dans cette position, la lame-ressort 232 s'appuie sur la face arrière du boîtier 14 pour retenir la lampe dans sa position de référence définie par l'appui de la collerette 13 sur des aménagements appropriés entourant le trou de lampe du miroir. On notera ici que la lame ressort 232 contribue également à la continuité électrique du blindage.In addition, it is advantageously provided on the bell 23 means for retaining the lamp 10 in position, constituted by a leaf-spring 232 or other elastic member whose one end is hingedly mounted on said bell and whose opposite end can lock on the latter on the opposite side. In this position, the leaf spring 232 rests on the rear face of the housing 14 to retain the lamp in its reference position defined by the support of the collar 13 on appropriate arrangements surrounding the lamp hole of the mirror. We note here that the blade spring 232 also contributes to the electrical continuity of the shielding.

La figure 8 illustre en particulier le montage pivotant de la lame-ressort 232 à son extrémité 2321, et le verrouillage de ladite lame-ressort à son extrémité opposée 2322.Figure 8 illustrates in particular the pivotal mounting of the leaf spring 232 at its end 2321, and the locking of said leaf spring at its opposite end 2322.

Par ailleurs, la figure 8 montre également que les griffes 231 se prolongent vers l'avant (à savoir vers le bas sur la figure) pour rejoindre une pièce conductrice 60 appartenant au porte-lampe, qui est engagée dans le trou de lampe du miroir et en contact à la fois avec la couche conductrice 22 du miroir et avec l'occulteur 40 (non représenté) par l'intermédiaire des pattes de fixation de celui-ci (également non représentées).On the other hand, Fig. 8 also shows that the claws 231 extend forward (i.e., downwardly in the figure) to join a conductive part 60 belonging to the lamp holder, which is engaged in the lamp hole of the mirror. and in contact with both the conductive layer 22 of the mirror and the shield 40 (not shown) via the fastening tabs thereof (also not shown).

La figure 9 illustre quant à elle l'ensemble du porte-lampe PL, portant quatre griffes 231 et pourvu d'aménagements 61, 62 respectivement pour le montage pivotant de la lame-ressort de retenue 232 et pour son accrochage en position verrouillée.FIG. 9 illustrates the assembly of the lamp holder PL, bearing four claws 231 and provided with arrangements 61, 62 respectively for the pivotal mounting of the retaining spring blade 232 and for locking it in the locked position.

En variante des différentes formes de griffes décrites ci-dessus, ou en sus de celles-ci, on peut utiliser un ou plusieurs joints déformables en matériau électriquement conducteur, aptes à être comprimés entre les surfaces conductrices entre lesquelles il s'agit d'assurer la continuité électrique.As a variant of the different claw shapes described above, or in addition to these, one or more deformable seals of electrically conductive material may be used, capable of being compressed between the conductive surfaces between which it is a question of ensuring electrical continuity.

La figure 10 représente schématiquement, en perspective, la coopération entre le connecteur 17 appartenant au boîtier 14 de la lampe et le connecteur complémentaire 52 prévu à l'extrémité du câble blindé d'alimentation.Figure 10 shows schematically, in perspective, the cooperation between the connector 17 belonging to the housing 14 of the lamp and the complementary connector 52 provided at the end of the shielded power supply cable.

Ainsi le corps de ce connecteur complémentaire 52 porte une série de griffes élastiques et électriquement conductrices 521 aptes à venir s'appuyer, lorsque les connecteurs sont assemblés, contre la couche conductrice 16a entourant le connecteur 17. On assure ainsi la continuité électrique de blindage entre la tresse extérieure 51 du câble 50 et le revêtement conducteur 16, 16a du boîtier de lampe 14, et par voie de conséquence avec les autres éléments, principalement miroir et occulteur, participant au blindage.Thus the body of this complementary connector 52 carries a series of resilient claws and electrically conductors 521 able to come to rest, when the connectors are assembled, against the conductive layer 16a surrounding the connector 17. This ensures electrical continuity of shielding between the outer braid 51 of the cable 50 and the conductive coating 16, 16a of the housing 14, and consequently with the other elements, mainly mirror and shield, participating in the shielding.

Ici encore, on peut remplacer ou compléter les griffes 521 par un joint déformable en matériau électriquement conducteur comprimé entre les surfaces entre lesquelles la continuité électrique de blindage doit être assurée.Here again, the claws 521 can be replaced or completed by a deformable gasket of electrically conductive material compressed between the surfaces between which the electrical continuity of shielding must be ensured.

On notera ici qu'avantageusement, les connecteurs 17 et 52 sont conçus pour que leur déconnexion provoque tout d'abord la déconnexion du ou des conducteurs acheminant la tension d'alimentation de la lampe, et seulement ensuite la déconnexion de la liaison assurant la continuité du blindage. Inversement, lorsque les connecteurs 17 et 52 sont assemblés, la continuité au blindage sera établie avant que le ou les connecteurs de l'alimentation proprement-dite.It will be noted here that advantageously, the connectors 17 and 52 are designed so that their disconnection first causes the disconnection of the conductor or conductors carrying the supply voltage of the lamp, and only then the disconnection of the connection ensuring continuity shielding. Conversely, when the connectors 17 and 52 are assembled, the continuity to the shielding will be established before the connector or connectors of the actual power supply.

De la même manière, il est avantageux que les connecteurs opérant entre l'extrémité opposée du câble 50 et le boîtier de commande appartenant au projecteur et situé à distance de la lampe présentent le même comportement.In the same way, it is advantageous that the connectors operating between the opposite end of the cable 50 and the control unit belonging to the projector and located at a distance from the lamp have the same behavior.

La figure 11 illustre quant à elle un autre mode d'exécution pour le montage d'une lampe selon les figures 1 à 4 à l'arrière du miroir 20.FIG. 11 illustrates another embodiment for mounting a lamp according to FIGS. 1 to 4 behind the mirror 20.

Le trou de lampe est entouré par une collerette axiale 24, et une couronne conductrice 25 est montée, par exemple par des vis, sur la surface annulaire libre définie par la collerette 24 à son extrémité postérieure.The lamp hole is surrounded by an axial flange 24, and a conductive ring 25 is mounted by example by screws on the free annular surface defined by the flange 24 at its rear end.

Cette couronne 25 porte à sa périphérie une série de doubles griffes 251 dont une partie antérieure est apte à venir en contact avec la couche conductrice 22 formée à l'arrière du miroir 20 (cette couche conductrice se prolongeant en 22a au niveau de la face externe de la collerette 24), et dont une partie postérieure est apte à venir en contact avec le revêtement conducteur 16 formé sur le boîtier 14 de la lampe 10. Un joint conducteur peut ici encore être utilisé.This ring 25 carries at its periphery a series of double claws 251 whose anterior part is adapted to come into contact with the conductive layer 22 formed at the rear of the mirror 20 (this conductive layer extending at 22a at the outer face of the flange 24), and a rear portion of which is capable of coming into contact with the conductive coating 16 formed on the casing 14 of the lamp 10. A conductive seal can again be used here.

En outre, la couronne 25 porte une lame-ressort 252 de retenue de la lampe, analogue à la lame-ressort 232 décrite plus haut.In addition, the ring 25 carries a leaf spring 252 retaining the lamp, similar to the leaf spring 232 described above.

Ici encore, on assure la continuité électrique entre le blindage 16 du boîtier 14 de la lampe et le blindage 22 du miroir.Again, electrical continuity is provided between the shield 16 of the lamp housing 14 and the shield 22 of the mirror.

La figure 12 illustre quant à elle un perfectionnement à la lame-ressort de retenue 242, ici montée directement sur une collerette 24 réalisée d'un seul tenant avec le miroir 20 ou encore rapportée sur celui-ci. Selon ce perfectionnement, la lame-ressort 242 porte un appendice 2421 destiné à venir coiffer, avec conduction électrique, la tresse extérieure nue du câble d'alimentation 50. Ceci permet notamment de réaliser la continuité électrique entre ladite tresse et le blindage 22 du miroir 20, dont la continuité électrique avec la lame-ressort 242 est réalisée par tout moyen approprié.Figure 12 illustrates an improvement to the retaining spring blade 242, here mounted directly on a flange 24 made in one piece with the mirror 20 or reported on it. According to this improvement, the leaf spring 242 carries an appendix 2421 intended to cap, with electrical conduction, the outer braid bare of the power cable 50. This allows in particular to achieve electrical continuity between said braid and the shield 22 of the mirror 20, whose electrical continuity with the leaf spring 242 is achieved by any suitable means.

Enfin la figure 13 illustre une forme de réalisation particulière du montage du couvercle de blindage 30 de la figure 5 autour de la partie postérieure de la lampe. Le couvercle 30 possède un premier appendice 34 par lequel il est monté pivotant sur un axe solidaire du miroir, et un second appendice par lequel, le couvercle étant en place en recouvrant la lampe, il est retenu en position à l'aide d'une vis ou analogue.Finally, FIG. 13 illustrates a particular embodiment of the mounting of the shielding cover 30 of FIG. 5 around the rear part of the lamp. The lid 30 has a first appendix 34 by which it is pivotally mounted on an axis integral with the mirror, and a second appendix by which, the cover being in place by covering the lamp, it is held in position by means of a screw or the like.

Bien entendu, la présente invention n'est nullement limitée aux formes de réalisation décrites et représentées, mais l'homme du métier saura y apporter de nombreuses variantes et modifications.Of course, the present invention is not limited to the embodiments described and shown, but the skilled person will be able to make many variations and modifications.

Claims (36)

  1. Motor vehicle headlight, comprising a gaseous discharge lamp (10) which is associated with a supply circuit and is fitted in a mirror (20), and means (16, 30; 22, 40, 51) for shielding against disruptive electromagnetic emissions; the said supply circuit is contained in a receptacle (15) which is associated with the lamp to the rear of the latter, the shielding means comprise a conductive material (16; 30) which surrounds the said receptacle entirely, and can assure the electrical continuity between a braid for shielding a supply cable which reaches as far as the said receptacle, and shielding fixtures which are associated with the mirror, characterised in that the said receptacle is defined by a case (14) which defines a connector (17) which can co-operate with an additional connector (52) at the end of the supply cable.
  2. Headlight according to claim 1, characterised in that the said conductive material (16) belongs to a case (14) which defines the said receptacle.
  3. Headlight according to claim 2, characterised in that the said conductive material (16) is added mechanically to the exterior of the said case (14).
  4. Headlight according to claim 2, characterised in that the said conductive material (16) is deposited on an outer surface of the said case (14).
  5. Headlight according to claim 1, characterised in that the said conductive material belongs to a cover (30) which is added on to the rear of the mirror (20) and surrounds a non-conductive case (14) which defines the said receptacle (15).
  6. Headlight according to any one of claims 1 to 5, characterised in that it comprises first connection means (231, 251; 32) in order to assure the electrical continuity between the said conductive material (16; 30) which surrounds the said receptacle and a second, shielding conductive material (22) which is provided on the rear surface of the mirror (20).
  7. Headlight according to claim 6, taken in combination with one of claims 3 and 4, characterised in that the first connection means comprise a series of claws (231; 251) which are connected electrically to the said second conductive material (22) and are supported against the said first conductive material (16).
  8. Headlight according to claim 7, characterised in that the said claws (231) are fitted on a lamp-holder (23, 60, PL) which is added on to the mirror.
  9. Headlight according to claim 6, taken in combination with claim 5, characterised in that the first connection means comprise fixtures (32) to support the said cover (30) against the said second conductive material (22) to the rear of the mirror (20).
  10. Headlight according to claim 6, characterised in that the first connection means comprise a deformable joint made of electrically conductive material, which is interposed between the first and second conductive materials.
  11. Headlight according to claim 10, characterised in that the deformable joint is fitted on the mirror.
  12. Headlight according to claim 10, characterised in that the deformable joint is fitted on a lamp-holder (23, 60, PL) which is added on to the mirror.
  13. Headlight according to one of claims 1 to 5, characterised in that it comprises second connection means (521; 33) in order to assure the electrical continuity between the said conductive material (16; 30) which surrounds the said receptacle and the said shielding braid (51).
  14. Headlight according to claim 13 taken in combination with one of claims 3 and 4, characterised in that the lamp case (14) has a first connector (17), in that the end of the supply cable (50) has a second connector (52) which can be plugged into the first connector, and in that, during the separation of the first and second connectors, the said second connection means can eliminate the electrical continuity between the said conductive material (16; 30) which surrounds the said receptacle and the said shielding braid (51) only after the contacts of the first and second connectors which convey the lamp supply voltage have been separated.
  15. Headlight according to claim 14, characterised in that the second connection means comprise a series of claws (52) which are supported by the said second connector, the said claws being in contact with the shielding braid (51) and with the conductive material (16a) which surrounds the case.
  16. Headlight according to claim 14, characterised in that the said second connection means comprise a conductive joint which is in contact with the shielding braid (51) and with the conductive material (16a) which surrounds the case.
  17. Headlight according to claim 13 taken in combination with one of claims 3 and 4, characterised in that resilient means (232; 242; 252) are provided for retention of the lamp in the axial position, the said means being supported against the conductive shielding material (16), and in that the said resilient means, which are conductive, and which, in the retention position, are in contact with the said shielding braid (51) of the cable, form part of the said second connection means.
  18. Headlight according to claim 13 taken in combination with claim 5, characterised in that the said second connection means comprise fixtures (33) for support against the braid (51) of the supply cable, formed on the said cover (30) around an aperture for the passage of the said cable (50).
  19. Headlight according to one of claims 2 and 4, characterised in that it comprises a conductive resilient element (232; 242; 252) which can be supported against the said conductive material (16) at the level of a rear surface of the said case, in order to assure simultaneously the retention of the lamp in an axial direction and electrical continuity of shielding with other shielding elements (22, 40, 51) of the headlight.
  20. Headlight according to claims 1 to 19, characterised in that the said receptacle (15) is an integral part of the lamp.
  21. Headlight according to any one of claims 1 to 19, characterised in that the said receptacle forms part of a connector on which the lamp is fitted in a removable manner.
  22. Headlight according to claims 1 to 21, characterised in that it additionally comprises control circuits which are contained in an electrically conductive control box which is situated spaced from the lamp, and third connection means in order to assure the electrical continuity between the said control box and the braid of the cable.
  23. Headlight according to claim 22, characterised in that the third connection means comprise a third connector which is provided on the control box and a fourth connector which is provided at the end of the supply cable (50) opposite the lamp, and can be plugged into the third connector, and in that, during the separation of the third and fourth connectors, the said third connection means can eliminate the electrical continuity between the said control box and the said shielding braid (51) only after the contacts of the third and fourth connectors which convey the lamp supply voltage have been separated.
  24. Headlight according to one of the preceding claims, characterised in that the mirror has, integrally with it or added on to it, an element (23) in the form of a bell which extends to the rear of the mirror around the lamp hole, and is open at the rear, the lamp (10) being fitted such that its case (14) made of conductive material engages partially in the said element (23).
  25. Headlight according to claim 24, characterised in that the element (23) supports on its periphery a plurality of claws (231) made of metal with resilient properties which, when the lamp (10) is put into place, can be supported against the conductive material (16).
  26. Headlight according to claim 25, characterised in that the said claws (231) are connected electrically to the conductive shielding material of the conductive layer type (22) which is provided at the rear of the mirror (20).
  27. Headlight according to one of the preceding claims, characterised in that the connector (17) is surrounded by a conductive layer (16a).
  28. Headlight according to claim 2, characterised in that it has a connector (17) which belongs to the case (14) and is surrounded by a conductive layer (16a), and in that an additional connector (52) is provided at the end of the shielded supply cable which supports a series of resilient and electrically conductive claws (521) which, when the connectors (17, 52) are assembled, can be supported against the conductive layer (16a) of the connector (17).
  29. Headlight according to claim 28, characterised in that the claws (521) are completed or replaced by a deformable joint made of resiliently conductive material which is compressed between the surfaces between which the shielding continuity must be assured.
  30. Headlight according to one of the preceding claims, characterised in that it comprises connectors which operate between the opposite end of the supply cable (50) and a control box which belongs to the headlight, and is situated spaced from the lamp.
  31. Gaseous discharge lamp (10) for a motor vehicle headlight, the said lamp being associated with a supply circuit and incorporating the said supply circuit in a receptacle (15), and it additionally comprises shielding means (16) comprising a conductive material which surrounds the said receptacle completely, and can assure the electrical continuity between a braid for shielding a supply cable which reaches as far as the said receptacle, and shielding fixtures provided on a mirror which can accommodate the said lamp, characterised in that the said receptacle is defined by a case (14) which defines a connector (17) which can co-operate with an additional connector (52) at the end of the supply cable.
  32. Lamp according to the preceding claim, characterised in that the other end of the supply cable (50) has a connector similar to the additional connector (52).
  33. Lamp (10) according to claim 31 or 32, characterised in that the said conductive material (16) belongs to a case (14) which defines the said receptacle.
  34. Lamp (10) according to claim 31 or 32, characterised in that the said conductive material (16) is added mechanically to the exterior of the said case (14).
  35. Lamp (10) according to claim 31 or 32, characterised in that the said conductive material (16) is deposited on an outer surface of the said case (14).
  36. Lamp (10) according to one of claims 31 to 35, characterised in that a case (14) defines the receptacle (15), the said case (14) being integral with the body of the lamp (10) or being added on in a removable manner to the rear of the lamp (10).
EP00401850A 1999-07-02 2000-06-29 Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding Expired - Lifetime EP1065438B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE20023527U DE20023527U1 (en) 1999-07-02 2000-06-29 Headlight for motor vehicles, has conducting outer envelope enclosing casing to provide electrical continuity between screening braid or cable and screening of mirror
EP20070007020 EP1798466B1 (en) 1999-07-02 2000-06-29 Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9908549A FR2795691B1 (en) 1999-07-02 1999-07-02 MOTOR VEHICLE PROJECTOR EQUIPPED WITH A DISCHARGE LAMP AND IMPROVED ELECTROMAGNETIC SHIELDING MEANS
FR9908549 1999-07-02

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20070007020 Division EP1798466B1 (en) 1999-07-02 2000-06-29 Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding
EP07007020.6 Division-Into 2007-04-04

Publications (3)

Publication Number Publication Date
EP1065438A1 EP1065438A1 (en) 2001-01-03
EP1065438B1 true EP1065438B1 (en) 2007-05-30
EP1065438B2 EP1065438B2 (en) 2011-01-12

Family

ID=9547638

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20070007020 Expired - Lifetime EP1798466B1 (en) 1999-07-02 2000-06-29 Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding
EP00401850A Expired - Lifetime EP1065438B2 (en) 1999-07-02 2000-06-29 Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20070007020 Expired - Lifetime EP1798466B1 (en) 1999-07-02 2000-06-29 Vehicle headlight equipped with a gas discharge lamp and improved means for electromagnetic shielding

Country Status (5)

Country Link
US (1) US6474856B2 (en)
EP (2) EP1798466B1 (en)
DE (1) DE60034996T3 (en)
ES (1) ES2288148T5 (en)
FR (1) FR2795691B1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002343128A (en) * 2001-05-14 2002-11-29 Denso Corp Headlight for vehicle
FR2843445B1 (en) * 2002-08-08 2005-05-27 Valeo Vision PROJECTOR DEVICE EQUIPPED WITH A COMPLEMENTARY MODULE FOR A MOTOR VEHICLE
WO2004068031A1 (en) * 2003-01-28 2004-08-12 Koninklijke Philips Electronics N.V. An hid lamp assembly and a method for fixing an hid lamp in a reflector
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
DE10331437A1 (en) 2003-07-10 2005-02-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High-pressure discharge lamp with integrated ignition device and vehicle headlight with a high-pressure discharge lamp
DE10361260A1 (en) * 2003-12-24 2005-07-28 Hella Kgaa Hueck & Co. plug
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
DE102007001392A1 (en) * 2007-01-09 2008-07-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Housing for an operating device of a discharge lamp
DE102007022028B4 (en) * 2007-05-11 2016-10-20 Automotive Lighting Reutlingen Gmbh Lighting device for a vehicle, in particular motor vehicle headlights
US20090289553A1 (en) * 2008-05-23 2009-11-26 Osram Sylvania, Inc. Integrated ceramic metal halide high frequency ballast assembly
US7628521B1 (en) * 2009-01-15 2009-12-08 Tyc Brother Industrial Co., Ltd. HID bulb fixing apparatus
SI23367B (en) 2009-12-30 2014-11-28 Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O. Lampshade of motor vehicle illuminant
EP2363635B1 (en) * 2010-03-04 2016-02-10 Hella KGaA Hueck & Co. Lamp holder for headlights
US10479218B2 (en) 2017-02-14 2019-11-19 Toyota Motor Engineering & Manufacturing North America, Inc. Electric vehicle power system with shared converter
US10448741B2 (en) 2018-02-20 2019-10-22 Sunny Fold Llc Collapsible support structure
US11400965B2 (en) 2019-07-09 2022-08-02 Sunny Fold, Llc Collapsible support structure

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249825B (en) † 1990-10-15 1994-06-22 Koito Mfg Co Ltd Vehicular headlamp
US5343370A (en) † 1990-10-23 1994-08-30 Koito Manufacturing Co., Ltd. Motor vehicle headlamp
DE4225303A1 (en) † 1992-07-31 1994-02-03 Bosch Gmbh Robert Automobile headlamp unit - uses gas discharge lamp enclosed by glass cylinder sealed at front end and vented at rear end.
FR2710131B1 (en) * 1993-09-15 1995-12-08 Valeo Vision High voltage connector and generator assembly for a motor vehicle discharge lamp.
DE29502977U1 (en) † 1995-02-22 1996-06-20 Bosch Gmbh Robert Plug for contacting a gas discharge lamp
EP0840644B1 (en) * 1995-07-18 1999-04-28 Parker-Hannifin Corporation Conductive filter element
US5882108A (en) † 1995-10-12 1999-03-16 Valeo Sylvania L.L.C. Lighting with EMI shielding
US5710485A (en) † 1995-11-13 1998-01-20 Osram Sylvania Inc. Neon lamp assembly with RF noise shield
JP3195215B2 (en) † 1995-12-28 2001-08-06 株式会社小糸製作所 Automotive headlamp
US5879073A (en) † 1996-01-29 1999-03-09 Koito Manufacturing Co., Ltd. Vehicular lamp having discharge bulb
DE19610385A1 (en) † 1996-03-16 1997-09-18 Bosch Gmbh Robert Gas discharge lamp, in particular for motor vehicle headlights
DE19610388A1 (en) † 1996-03-16 1997-09-18 Bosch Gmbh Robert Ignition device e.g. for discharge lamp of motor vehicle
JP3162290B2 (en) † 1996-04-30 2001-04-25 株式会社小糸製作所 Vehicle lamp having a discharge bulb
JP3159078B2 (en) * 1996-08-30 2001-04-23 株式会社デンソー High pressure discharge lamp device
WO1998038708A1 (en) * 1997-02-28 1998-09-03 The Whitaker Corporation Lighting apparatus for discharge lamps and discharge lamp socket used therein
FR2769072B1 (en) * 1997-09-26 1999-12-24 Valeo Vision MOTOR VEHICLE PROJECTOR EQUIPPED WITH A DISCHARGE LAMP AND IMPROVED ELECTROMAGNETIC SHIELDING MEANS
DE19831042A1 (en) † 1998-07-13 2000-02-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lighting system with a high-pressure discharge lamp
FR2783593B1 (en) † 1998-09-21 2000-12-29 Valeo Vision MOTOR VEHICLE PROJECTOR EQUIPPED WITH A DISCHARGE LAMP AND IMPROVED ELECTROMAGNETIC SHIELDING MEANS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1065438B2 (en) 2011-01-12
EP1065438A1 (en) 2001-01-03
US20010030877A1 (en) 2001-10-18
FR2795691A1 (en) 2001-01-05
ES2288148T5 (en) 2011-03-21
DE60034996T2 (en) 2008-01-24
FR2795691B1 (en) 2001-08-17
EP1798466A1 (en) 2007-06-20
US6474856B2 (en) 2002-11-05
DE60034996T3 (en) 2011-05-19
DE60034996D1 (en) 2007-07-12
ES2288148T3 (en) 2008-01-01
EP1798466B1 (en) 2015-05-13

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