EP1793160B1 - Device for fastening a cap in a vehicle headlight - Google Patents

Device for fastening a cap in a vehicle headlight Download PDF

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Publication number
EP1793160B1
EP1793160B1 EP06291829A EP06291829A EP1793160B1 EP 1793160 B1 EP1793160 B1 EP 1793160B1 EP 06291829 A EP06291829 A EP 06291829A EP 06291829 A EP06291829 A EP 06291829A EP 1793160 B1 EP1793160 B1 EP 1793160B1
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EP
European Patent Office
Prior art keywords
lamp
lamp holder
holder
windshield
light
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.)
Not-in-force
Application number
EP06291829A
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German (de)
French (fr)
Other versions
EP1793160A1 (en
Inventor
Joseph Cappedu
Jean-Claude Puente
Cyril Herbin
Nicolas Simmet
Rémy Maliar
Tomasz Wolak
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Valeo Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1793160A1 publication Critical patent/EP1793160A1/en
Application granted granted Critical
Publication of EP1793160B1 publication Critical patent/EP1793160B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21S41/194—Bayonet attachments

Definitions

  • the invention relates to a device for fixing a sealing cup in a motor vehicle headlamp.
  • the invention relates, in particular, to a lamp holder ensuring, on the one hand, the holding of a lamp in the projector and, on the other hand, the holding of a sealing cup between said lamp holder and the projector casing.
  • the invention has applications in the automotive field and, more specifically, in the field of light projection for motor vehicles. It finds, in particular, applications for holding and fixing a windshield sealing between the lamp holder and the housing of a projector.
  • light projection devices for motor vehicles also called light projectors
  • light sources which can be of different kinds.
  • the front projectors of the vehicles are equipped with light sources which can be of two kinds: discharge lamps or halogen lamps.
  • Discharge lamps are used more and more frequently in vehicles, for road lighting with a road function and a code function.
  • Halogen lamps can also be used for road-type lighting or for an anti-fog function. Halogen lamps have the advantage of being less expensive than gas discharge lamps.
  • the light source In a vehicle headlamp, the light source is placed in the center of a photometric reflector, also called a mirror. This reflector aims to reflect the light emitted by the light source.
  • the reflector is equipped with a central opening to install the light source at the heart of the reflector.
  • a lamp holder is generally used to hold said halogen lamp within the reflector. This lamp holder is fixed on the contour of the central opening of the reflector. The lamp holder thus ensures the mechanical connection between the reflector and the halogen lamp.
  • a reflector and equipped with a lamp holder and a halogen lamp is installed inside a housing.
  • the lamp connection is outside the main projector to facilitate disassembly of the lamp in case of non-operation. Therefore, to seal the projector and prevent any water or moisture from entering the projector housing, a windshield is usually installed between the lamp holder and the housing. This windshield is a seal, often made of rubber, able to isolate the inside of the housing from moisture.
  • the halogen lamp is movable inside the housing of the projector while the housing itself is fixed in the vehicle. It is therefore necessary that the windshield between the lamp holder and the housing is able to follow the movements of the halogen lamp.
  • the windscreen is made to be relatively elastic. This elasticity is obtained by the choice of the material, for example rubber, and by the production of bellows.
  • a conventional windshield generally has a crown shape with a circular inner face and a circular outer face. It is placed so that the circular inner face is in contact with the lamp holder and the circular outer face is fixed on the housing. More specifically, the circular inner face is in contact with the sidewall of the lamp holder, that is to say the outer periphery of the lamp holder, solely by the elasticity of the material in which the windscreen is made. When fitting the windscreen, it is slipped around the lamp holder. Its elasticity keeps the windshield in place around the lamp holder.
  • the mobility of the lamp holder in particular with the vibrations of the vehicle, can cause a substantial displacement of the inner face of the windscreen along the side of the lamp holder, with partial or total sliding of the windshield out of the sidewall of the windscreen. lamp holder.
  • a sliding of the windshield out of the lamp holder necessarily leads to water infiltration into the housing. And thermal problems (fire risks).
  • the lamp holder To avoid a total sliding of the windshield out of the lamp holder, the lamp holder, described in the aforementioned US patent, has a groove, at the edge of the lamp holder, intended to receive the end of the lamp. windscreen. This groove is made at the end of the lamp holder farthest from the reflector. Such a groove can prevent a total sliding of the windshield out of the lamp holder. However, it can not prevent partial sliding of the windshield to said groove. Thus, under the effect of vibrations, the windshield can slide and gather near the throat. However, any movement of the windshield may cause poor contact between the windscreen and the side of the lamp holder with the risk of moisture infiltration.
  • a projector comprising a reflector comprising a portion serving as a lamp holder provided with fixing means ensuring axial retention of a windscreen
  • a winder which has a central opening delimited by a bead provided with sealing lips on its inner surface which come into contact with the outer surface of a sleeve.
  • the bead in two diametrically opposite zones, is integral, forwardly, a prominence substantially parallelepiped-shaped projecting radially inwardly.
  • the prominence has on its front edge and on its rear edge a retaining rib in a window of the sleeve, thus ensuring the axial retention of the windshield.
  • the invention aims precisely to overcome the disadvantages of the techniques described above by providing a device for fixing the windshield on the lamp holder.
  • the circular inner face of the windshield has a cylindrical shape and is installed around the lamp holder which also has a cylindrical shape, the movement of the windshield can not be transversal.
  • the displacement of the windshield is necessarily axial. It comes from the fact that, according to the prior art, the windscreen is maintained along the side of the lamp holder only by its elasticity.
  • the invention proposes a lamp holder equipped with means for fixing the windshield.
  • These fastening means provide an axial retention of the windshield along said lamp holder.
  • These fixing means consist of at least one lug and / or collar formed on the periphery of the lamp holder.
  • the lamp holder according to the invention allows monobloc and sheet metal embodiments.
  • the invention is capable of providing a lamp holder providing a fixing by crimping on the reflector, a sealing by the voucher, a ventilation and a retention of the windshield at the depression and withdrawal.
  • the sheet metal production is of significant economic interest because of its very low cost.
  • the invention also relates to a motor vehicle characterized in that it comprises at least one light projection device as described above.
  • the invention relates to a projector for a motor vehicle in which the lamp holder is equipped with means for fixing the windshield.
  • a projector for a motor vehicle in which the lamp holder is equipped with means for fixing the windshield.
  • An example of such a projector is shown, in an exploded view in perspective, on the figure 1 .
  • This projector comprises a housing 5.
  • This housing 5 is equipped with a projector optics 6, a reflector 1 forming the mirror of the projector and a light source 2.
  • a carrier lamp 3 adapted to receive the light source 2.
  • This light source can be a halogen lamp, in particular, a type H11 lamp.
  • a lamp H11 comprises a halogen bulb 21 mounted on a base 22 surrounded by a flange 23.
  • This lamp H11 also comprises electrical contacts integrated inside a connection module 24, as well as a seal (not shown). This seal allows a seal with respect to the lamp holder 3 when the lamp H11 is mounted on the lamp holder 3.
  • the lamp H11 is held behind the reflector 1 via the lamp holder 3.
  • This lamp holder 3 is fixed to the base of the reflector 1 by means of crimping tabs not visible on the figure 1 .
  • the lamp holder can be crimped on the reflector by at least three crimping tabs.
  • An additional leg, not crimped, can index the lamp holder to give it an angular position.
  • the lamp holder 3 is able to receive the lamp H11.
  • the H11 lamp 2 is locked by a quarter-turn rotation on the lamp holder 3. This locking is achieved through a bayonet device with anti-return function. Once the H11 lamp locked in the lamp holder, its focus is ensured by the positioning of the lamp holder in the reflector.
  • This sealing device may be a windshield made of an elastic material and waterproof. It can be made, for example, of rubber or silicone.
  • This windshield 4 seals the rear part of the projector, between the lamp holder and the housing.
  • the winder is mounted around the lamp holder so as to be in contact with a flank 33 of the lamp holder, that is to say the outer circular face of the lamp holder, also called around the lamp holder.
  • the windscreen is mounted on the lamp holder so that the lamp H11 is accessible from the outside of the projector, without disassembling the windscreen. Thus, when the H11 lamp is to be replaced, it can be disassembled and reassembled without the need to disassemble the windshield, thus limiting the risk of moisture integration in the housing.
  • the windshield 4, shown on the figure 1 is a rubber bellows bellows, having a circular outer face 41 and a circular inner face 42.
  • the cup 4 has a disc shape hollowed at its center and whose thickness is adapted to the height of the lamp holder.
  • the circular inner face 42 of the cup 4 has dimensions adapted to the periphery of the lamp holder. In particular, the depth of the inner face 42 substantially corresponds to the height of the periphery of the lamp holder.
  • This inner face 42 has a plurality of lips 43, that is to say circular bosses formed on the entire circumference of the face. Between two 43, are formed circular grooves 44, called channels.
  • the lips 43 and the channels 44 have the role of increasing the roughness of the windscreen against the flank 33 of the lamp holder to allow a better grip of the windshield on the lamp holder.
  • These lips and these channels also have the role of improving the tightness of the projector. Indeed, when there is a movement of air, the pressure of the air that tends to pass moisture from one side of the windshield to the other side of the windshield decreases at each lip, so that the pressure becomes zero or almost zero near the last lip. These lips and these channels thus absorb moisture so that it does not penetrate inside the housing.
  • the device of the invention comprises fixing means made on the lamp holder.
  • These fixing means comprise at least one lug 31 formed on the sidewall 33 of the lamp holder 3.
  • the lamp holder 3 is equipped with three pins 31 regularly distributed around the periphery of the lamp holder, at angles of about 120 ° from each other.
  • Each pin 31 has the role of being inserted in a channel 44 formed between two lips 43 of the inner face 42 of the windshield, so that the windshield is attached by this lug to the side of the lamp holder.
  • the fixing means comprise three lugs 31 distributed on the flank 33 of the lamp holder, ensuring retention of the windscreen all around the lamp holder.
  • These three pins can be distributed so as to be aligned on the side of the lamp holder, which has the effect that the three lugs fit into the same channel 44 of the windscreen. They can also be distributed so as to be offset from each other, so that each lug fits into a different channel, which further enhances the holding in the fixed position of the windshield on the lamp holder.
  • the fastening means comprise, in addition to lugs, at least one annular retaining flange 32.
  • This annular flange 32 is a flange made on the entire periphery of the lamp holder.
  • This flange 32 is formed at a first end of the sidewall 33 of the lamp holder, near the reflector.
  • This flange 32 constitutes a first stop for the windshield 4, which prevents said windshield from sliding towards the reflector.
  • the lamp holder 3 comprises a second annular flange 34, made at a second end of the flank 33 of the lamp holder, near the connection module 24 of the lamp H11.
  • This second flange 34 may be identical to the first flange 32, made according to the same technique, described later, than said first flange 32.
  • This second flange 34 constitutes a second stop for the windscreen 4, which prevents said windscreen from sliding towards the module 24.
  • FIG. figure 4 An example of such a lamp holder with two flanges is shown in FIG. figure 4 .
  • the lamp holder provides a function of holding the windshield.
  • the lamp holder therefore has a dual function, namely a function of holding the lamp and a support function of the windshield to ensure sealing.
  • FIG 2 there is shown a side sectional view of the light projector of the figure 1 .
  • This figure 2 shows the lamp H11 2 when it is installed in the lamp holder 3 which is itself mounted in the reflector 1.
  • This figure 2 also shows the windshield 4 installed between the lamp holder 3 and the housing 5.
  • the windshield 4 is a bellows windshield, that is to say it is made of flexible material capable of forming zigzags between its two fixed faces 41 and 42.
  • the figure 3 shows in detail the circular inner face 42 of the windshield 4, mounted against the sidewall 33 of the lamp holder 3.
  • This inner face 42 of the windshield has lips 43 separated by channels 44.
  • These channels have been shown schematically with a shape triangular. It will be understood that these channels may have different geometries, since they constitute a continuous continuous gap between two lips.
  • Each channel 44 is adapted to form a housing that can receive a lug 31.
  • the pin 31 is inserted into the third channel 44, that is to say the channel closest to the reflector.
  • This figure 3 also shows the collar 32 which forms a stop for the windshield.
  • the lamp holder is made of stamped sheet metal.
  • the sheet has the advantage of being easy to shape, especially by punching, cutting and stamping.
  • the sheet may be a sheet of DC04 type benefiting from zinc-nickel treatment.
  • the use of such a sheet in the invention makes it easy and inexpensive to produce the lugs 31 and the flange 32.
  • the lugs 31 can be produced by punching the sheet of the lamp holder. Punching consists of making a cut in the sheet by means of a punch. The cut sheet portion is then deformed to create a projection forming a lug. This pin is a puncture that is folded to form a projection.
  • the flange 32 may be manufactured by deforming the end of the plate of the lamp holder near the reflector. This deformation makes it possible to create a rim, at the end of the lamp holder, projecting from the sidewall 33 of said lamp holder.
  • vents 35 are provided in a side of the lamp holder 3. These vents, 3 in this embodiment, are provided to allow evacuation of the heat released by the light source 2.
  • the lugs 31 of the lamp holder are housed between two lips 43 of the inner face 42 of the windshield and the flange 32 holds the windscreen along the side of the lamp holder. .
  • the lugs 31 are hooks for the windshield and the collar 32 constitutes a stop for this windshield.
  • the stop is provided at both ends of the lamp holder.
  • the windshield 4 is held in place, on the one hand, by the lugs 31 inserted in the channels 44 of the windshield and, on the other hand, by the flange (s) which prevents (s) any sliding of the windshield towards the reflector and / or the connection module of the lamp H11.
  • the windshield is held fixed around the lamp holder, the seal is provided by the windshield whatever the movements of the lamp in relation to the projector casing.
  • the H11 lamp being a bayonet lamp
  • the seal between the lamp and the lamp holder is provided by the bayonet system of the lamp itself.
  • the lamp holder is made of pressed sheet metal, in the preferred embodiment.
  • the reflector may also be made of stamped sheet metal.
  • the sheet has the advantage of being a relatively inexpensive material and easy to shape.
  • the sheet reflectors can therefore be produced in large quantities with a basic shape, identical for all reflector models, shaped at the end of manufacture to adapt the contour of the reflector to particular uses.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Motor Or Generator Frames (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The headlight, comprising a light source (2), a reflector (1), a lamp holder (3) and a cup (4) to ensure a seal between the lamp holder and housing, has the lamp holder made with a collar (32) and lugs (31) to engage with the threaded circular inner surface (42) of the cup. The lugs, preferably three in number, project from a cylindrical surround (33) and the collar acts as a stop. The lamp holder is made from pressed steel sheet with the lugs produced by cutting or stamping.

Description

Domaine de l'inventionField of the invention

L'invention concerne un dispositif de fixation d'une bonnette d'étanchéité dans un projecteur de véhicule automobile. L'invention concerne, en particulier, un porte-lampe assurant, d'une part, le maintien d'une lampe dans le projecteur et, d'autre part, le maintien d'une bonnette d'étanchéité entre ledit porte-lampe et le boîtier du projecteur.The invention relates to a device for fixing a sealing cup in a motor vehicle headlamp. The invention relates, in particular, to a lamp holder ensuring, on the one hand, the holding of a lamp in the projector and, on the other hand, the holding of a sealing cup between said lamp holder and the projector casing.

L'invention trouve des applications dans le domaine de l'automobile et, plus précisément, dans le domaine de la projection de lumière pour véhicules automobiles. Elle trouve, en particulier, des applications pour le maintien et la fixation d'une bonnette assurant l'étanchéité entre le porte-lampe et le boîtier d'un projecteur.The invention has applications in the automotive field and, more specifically, in the field of light projection for motor vehicles. It finds, in particular, applications for holding and fixing a windshield sealing between the lamp holder and the housing of a projector.

Etat de la techniqueState of the art

Actuellement, les dispositifs de projection de lumière pour véhicules automobiles, appelés aussi projecteurs de lumière, sont munis de sources lumineuses qui peuvent être de différentes sortes. En particulier, les projecteurs avant des véhicules sont équipés de sources lumineuses qui peuvent être de deux sortes : des lampes à décharges ou des lampes halogènes. Les lampes à décharges sont utilisées de plus en plus fréquemment dans les véhicules, pour un éclairage de type route avec une fonction route et une fonction code. Les lampes halogènes peuvent être aussi utilisées pour un éclairage de type route ou pour une fonction antibrouillard. Les lampes halogènes ont l'avantage d'être moins coûteuses que les lampes à décharge.Currently, light projection devices for motor vehicles, also called light projectors, are provided with light sources which can be of different kinds. In particular, the front projectors of the vehicles are equipped with light sources which can be of two kinds: discharge lamps or halogen lamps. Discharge lamps are used more and more frequently in vehicles, for road lighting with a road function and a code function. Halogen lamps can also be used for road-type lighting or for an anti-fog function. Halogen lamps have the advantage of being less expensive than gas discharge lamps.

Dans un projecteur de véhicule, la source lumineuse est placée au centre d'un réflecteur photométrique, appelé également miroir. Ce réflecteur a pour but de réfléchir la lumière émise par la source lumineuse. Le réflecteur est équipé d'une ouverture centrale permettant d'installer la source lumineuse au coeur du réflecteur. Lorsque la source lumineuse est une lampe halogène, on utilise généralement un porte-lampe pour maintenir ladite lampe halogène à l'intérieur du réflecteur. Ce porte-lampe est fixé sur le contour de l'ouverture centrale du réflecteur. Le porte-lampe assure ainsi la liaison mécanique entre le réflecteur et la lampe halogène.In a vehicle headlamp, the light source is placed in the center of a photometric reflector, also called a mirror. This reflector aims to reflect the light emitted by the light source. The reflector is equipped with a central opening to install the light source at the heart of the reflector. When the light source is a halogen lamp, a lamp holder is generally used to hold said halogen lamp within the reflector. This lamp holder is fixed on the contour of the central opening of the reflector. The lamp holder thus ensures the mechanical connection between the reflector and the halogen lamp.

Un réflecteur ainsi équipé d'un porte-lampe et d'une lampe halogène est installé à l'intérieur d'un boîtier. Dans ce cas, la connexion de la lampe est à l'extérieur du projecteur principal afin de faciliter le démontage de la lampe en cas de non fonctionnement. Donc, pour assurer une étanchéité du projecteur et empêcher toute infiltration d'eau ou d'humidité dans le boîtier du projecteur, on installe généralement une bonnette entre le porte-lampe et le boîtier. Cette bonnette est un joint, souvent en caoutchouc, apte à isoler l'intérieur du boîtier de l'humidité.A reflector and equipped with a lamp holder and a halogen lamp is installed inside a housing. In this case, the lamp connection is outside the main projector to facilitate disassembly of the lamp in case of non-operation. Therefore, to seal the projector and prevent any water or moisture from entering the projector housing, a windshield is usually installed between the lamp holder and the housing. This windshield is a seal, often made of rubber, able to isolate the inside of the housing from moisture.

Du fait même du montage, la lampe halogène est mobile à l'intérieur du boîtier du projecteur alors que le boîtier lui-même est fixe dans le véhicule. Il est donc nécessaire que la bonnette située entre le porte-lampe et le boîtier soit apte à suivre les mouvements de la lampe halogène. Pour cela, la bonnette est réalisée de façon à être relativement élastique. Cette élasticité est obtenue par le choix du matériau, par exemple du caoutchouc, et par la réalisation de soufflets.By the very fact of mounting, the halogen lamp is movable inside the housing of the projector while the housing itself is fixed in the vehicle. It is therefore necessary that the windshield between the lamp holder and the housing is able to follow the movements of the halogen lamp. For this, the windscreen is made to be relatively elastic. This elasticity is obtained by the choice of the material, for example rubber, and by the production of bellows.

Un exemple de bonnette à soufflets est décrit dans le document US - A-5 551 245 .An example of a bellows windshield is described in the document US - A-5,551,245 .

Une bonnette classique a généralement une forme de couronne avec une face interne circulaire et une face externe circulaire. Elle est placée de façon à ce que la face interne circulaire soit en contact avec le porte-lampe et que la face externe circulaire soit fixée sur le boîtier. Plus précisément, la face interne circulaire est en contact avec le flanc du porte-lampe, c'est-à-dire le pourtour extérieur du porte-lampe, uniquement par l'élasticité du matériau dans lequel est réalisée la bonnette. Lors du montage de la bonnette, celle-ci est glissée autour du porte-lampe. C'est son élasticité qui maintient la bonnette en place autour du porte-lampe.A conventional windshield generally has a crown shape with a circular inner face and a circular outer face. It is placed so that the circular inner face is in contact with the lamp holder and the circular outer face is fixed on the housing. More specifically, the circular inner face is in contact with the sidewall of the lamp holder, that is to say the outer periphery of the lamp holder, solely by the elasticity of the material in which the windscreen is made. When fitting the windscreen, it is slipped around the lamp holder. Its elasticity keeps the windshield in place around the lamp holder.

Cependant, la mobilité du porte-lampe, notamment avec les vibrations du véhicule, peut entraîner un déplacement sensible de la face interne de la bonnette le long du flanc du porte-lampe, avec un glissement partiel ou total de la bonnette hors du flanc du porte-lampe. Or, un glissement de la bonnette hors du porte-lampe entraîne nécessairement des infiltrations d'eau dans le boîtier. Et des problèmes thermiques (risques d'incendie).However, the mobility of the lamp holder, in particular with the vibrations of the vehicle, can cause a substantial displacement of the inner face of the windscreen along the side of the lamp holder, with partial or total sliding of the windshield out of the sidewall of the windscreen. lamp holder. However, a sliding of the windshield out of the lamp holder necessarily leads to water infiltration into the housing. And thermal problems (fire risks).

Pour éviter un glissement total de la bonnette hors du porte-lampe, le porte-lampe, décrit dans le brevet US précédemment cité, comporte une gorge, en bordure du porte-lampe, destinée à recevoir l'extrémité de la bonnette. Cette gorge est réalisée à l'extrémité du porte-lampe la plus éloignée du réflecteur. Une telle gorge peut empêcher un glissement total de la bonnette hors du porte-lampe. Cependant, elle ne peut empêcher un glissement partiel de la bonnette vers ladite gorge. Ainsi, sous l'effet des vibrations, la bonnette peut glisser et s'amasser à proximité de la gorge. Or, tout déplacement de la bonnette peut entraîner un mauvais contact entre la bonnette et le flanc du porte-lampe avec des risques d'infiltration d'humidité.To avoid a total sliding of the windshield out of the lamp holder, the lamp holder, described in the aforementioned US patent, has a groove, at the edge of the lamp holder, intended to receive the end of the lamp. windscreen. This groove is made at the end of the lamp holder farthest from the reflector. Such a groove can prevent a total sliding of the windshield out of the lamp holder. However, it can not prevent partial sliding of the windshield to said groove. Thus, under the effect of vibrations, the windshield can slide and gather near the throat. However, any movement of the windshield may cause poor contact between the windscreen and the side of the lamp holder with the risk of moisture infiltration.

On connaît par ailleurs du document US 6 116 755 , un projecteur comportant un réflecteur comportant une partie faisant fonction de porte-lampe munie de moyens de fixation assurant un maintien axial d'une bonnette, et du document EP 1 243 845 une bonnette qui comporte une ouverture centrale délimitée par un bourrelet muni de lèvres d'étanchéité sur sa surface intérieure qui viennent au contact de la surface extérieure d'un manchon. Le bourrelet, en deux zones diamétralement opposées, est solidaire, vers l'avant, d'une proéminence sensiblement en forme de parallélépipède faisant saillie radialement vers l'intérieur. La proéminence comporte sur son bord avant et sur son bord arrière une nervure de retenue dans une fenêtre du manchon, assurant ainsi le maintien axial de la bonnette.It is also known from the document US 6,116,755 , a projector comprising a reflector comprising a portion serving as a lamp holder provided with fixing means ensuring axial retention of a windscreen, and of the document EP 1 243 845 a winder which has a central opening delimited by a bead provided with sealing lips on its inner surface which come into contact with the outer surface of a sleeve. The bead, in two diametrically opposite zones, is integral, forwardly, a prominence substantially parallelepiped-shaped projecting radially inwardly. The prominence has on its front edge and on its rear edge a retaining rib in a window of the sleeve, thus ensuring the axial retention of the windshield.

Exposé de l'inventionPresentation of the invention

L'invention a justement pour but de remédier aux inconvénients des techniques exposées précédemment en proposant un dispositif de fixation de la bonnette sur le porte-lampe. En effet, comme la face interne circulaire de la bonnette a une forme cylindrique et qu'elle est installée autour du porte-lampe qui a également une forme cylindrique, le déplacement de la bonnette ne peut être transversal. Le déplacement de la bonnette est nécessairement axial. Il provient du fait que, selon la technique antérieure, la bonnette est maintenue le long du flanc du porte-lampe uniquement par son élasticité.The invention aims precisely to overcome the disadvantages of the techniques described above by providing a device for fixing the windshield on the lamp holder. Indeed, as the circular inner face of the windshield has a cylindrical shape and is installed around the lamp holder which also has a cylindrical shape, the movement of the windshield can not be transversal. The displacement of the windshield is necessarily axial. It comes from the fact that, according to the prior art, the windscreen is maintained along the side of the lamp holder only by its elasticity.

Pour résoudre ce problème, l'invention propose un porte-lampe équipé de moyens de fixation de la bonnette. Ces moyens de fixation assurent un maintien axial de la bonnette le long dudit porte-lampe. Ces moyens de fixation consistent en au moins un ergot et/ou une collerette formés sur le pourtour du porte-lampe.To solve this problem, the invention proposes a lamp holder equipped with means for fixing the windshield. These fastening means provide an axial retention of the windshield along said lamp holder. These fixing means consist of at least one lug and / or collar formed on the periphery of the lamp holder.

De façon plus précise, l'invention concerne un dispositif de projection de lumière pour véhicule automobile comportant un boîtier équipé de :

  • une source lumineuse,
  • un réflecteur apte à réfléchir la lumière émise par la source lumineuse,
  • un porte-lampe apte à maintenir la source lumineuse devant le réflecteur,
  • une bonnette apte à assurer l'étanchéité entre le porte-lampe et le boîtier, cette bonnette comportant une face interne circulaire en contact avec le pourtour du porte-lampe et une face externe circulaire en contact avec le boîtier, la face interne étant munie de lèvres,
caractérisé par le fait que le porte-lampe comporte des moyens de fixation assurant un maintien axial de la bonnette, ces moyens de fixation comprenant au moins un ergot réalisé sur un pourtour extérieur du porte-lampe.More specifically, the invention relates to a light projection device for a motor vehicle comprising a housing equipped with:
  • a light source,
  • a reflector able to reflect the light emitted by the light source,
  • a lamp holder adapted to hold the light source in front of the reflector,
  • a windshield adapted to seal between the lamp holder and the housing, this lens having a circular inner face in contact with the periphery of the lamp holder and a circular outer face in contact with the housing, the inner face being provided with lips,
characterized in that the lamp holder comprises fixing means ensuring an axial retention of the windshield, these fixing means comprising at least one lug made on an outer periphery of the lamp holder.

L'invention peut comporter également une ou plusieurs des caractéristiques suivantes :

  • les moyens de fixation comprennent au moins une collerette annulaire formée à une extrémité du pourtour du porte-lampe pour assurer une butée à la bonnette.
  • l'ergot a des dimensions adaptées pour s'insérer dans une rigole entre deux lèvres de la bonnette.
  • les moyens de fixation comportent trois ergots répartis régulièrement sur le pourtour du porte-lampe.
  • les moyens de fixation comportent une seconde collerette annulaire formée à une seconde extrémité du pourtour du porte-lampe pour assurer une seconde butée à la bonnette.
  • le porte-lampe est réalisé en tôle emboutie.
  • l'ergot est réalisé par découpe ou poinçonnage de la tôle du porte-lampe.
  • la collerette est réalisée par déformation de la tôle à une extrémité du pourtour du porte-lampe.
  • le porte-lampe comporte au moins un évent autorisant une évacuation de la chaleur dégagée par la source lumineuse.
  • le porte-lampe est adapté pour recevoir une lampe halogène de type H11.
The invention may also include one or more of the following features:
  • the fastening means comprise at least one annular flange formed at one end of the periphery of the lamp holder to provide a stop to the windshield.
  • the lug has dimensions adapted to fit into a channel between two lips of the windshield.
  • the fastening means comprise three lugs regularly distributed on the periphery of the lamp holder.
  • the fixing means comprise a second annular flange formed at a second end of the periphery of the lamp holder to provide a second stop to the windshield.
  • the lamp holder is made of pressed sheet metal.
  • the lug is made by cutting or punching the plate of the lamp holder.
  • the flange is made by deformation of the sheet at one end of the periphery of the lamp holder.
  • the lamp holder has at least one vent allowing an evacuation of the heat released by the light source.
  • the lamp holder is adapted to receive a halogen lamp type H11.

Avantageusement, le porte-lampe selon l'invention autorise des formes de réalisation monobloc et en tôle. L'invention est apte à fournir un porte-lampe offrant une fixation par sertissage sur le réflecteur, une étanchéité par la bonette, une ventilation et une retenue de la bonnette à l'enfoncement et au retrait. La réalisation en tôle présente un intérêt économique important du fait de son très faible coût.Advantageously, the lamp holder according to the invention allows monobloc and sheet metal embodiments. The invention is capable of providing a lamp holder providing a fixing by crimping on the reflector, a sealing by the voucher, a ventilation and a retention of the windshield at the depression and withdrawal. The sheet metal production is of significant economic interest because of its very low cost.

L'invention concerne également un véhicule automobile caractérisé par le fait qu'il comporte au moins un dispositif de projection de lumière tel que décrit précédemment.The invention also relates to a motor vehicle characterized in that it comprises at least one light projection device as described above.

Brève description des dessinsBrief description of the drawings

  • La figure 1 représente une vue éclatée d'un dispositif de projection de lumière selon l'invention.The figure 1 represents an exploded view of a light projection device according to the invention.
  • La figure 2 représente une vue en coupe d'un projecteur équipé d'une bonnette fixée sur le porte-lampe conformément à l'invention.The figure 2 is a sectional view of a projector equipped with a windshield fixed to the lamp holder according to the invention.
  • La figure 3 représente une vue détaillée du moyen de fixation de la bonnette sur le porte-lampe.The figure 3 is a detailed view of the fastening means of the windshield on the lamp holder.
  • La figure 4 représente une vue en perspective d'un porte-lampe à deux collerettes.The figure 4 represents a perspective view of a lamp holder with two flanges.
Description détaillée de modes de réalisation de l'inventionDETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

L'invention concerne un projecteur pour véhicule automobile dans lequel le porte-lampe est équipé de moyens de fixation de la bonnette. Un exemple d'un tel projecteur est représenté, selon une vue éclatée en perspective, sur la figure 1. Ce projecteur comporte un boîtier 5. Ce boîtier 5 est équipé d'une optique de projecteur 6, d'un réflecteur 1 formant le miroir du projecteur et d'une source lumineuse 2. A la base de ce réflecteur, est fixé un porte-lampe 3 apte à recevoir la source lumineuse 2. Cette source lumineuse peut être une lampe halogène, en particulier, une lampe de type H11.The invention relates to a projector for a motor vehicle in which the lamp holder is equipped with means for fixing the windshield. An example of such a projector is shown, in an exploded view in perspective, on the figure 1 . This projector comprises a housing 5. This housing 5 is equipped with a projector optics 6, a reflector 1 forming the mirror of the projector and a light source 2. At the base of this reflector, is fixed a carrier lamp 3 adapted to receive the light source 2. This light source can be a halogen lamp, in particular, a type H11 lamp.

Une lampe H11 comporte une ampoule halogène 21 montée sur un culot 22 entouré d'une collerette 23. Cette lampe H11 comporte également des contacts électriques intégrés à l'intérieur d'un module de connexion 24, ainsi qu'un joint d'étanchéité (non représenté). Ce joint d'étanchéité autorise une étanchéité par rapport au porte-lampe 3 lorsque la lampe H11 est montée sur le porte-lampe 3.A lamp H11 comprises a halogen bulb 21 mounted on a base 22 surrounded by a flange 23. This lamp H11 also comprises electrical contacts integrated inside a connection module 24, as well as a seal ( not shown). This seal allows a seal with respect to the lamp holder 3 when the lamp H11 is mounted on the lamp holder 3.

La lampe H11 est maintenue derrière le réflecteur 1 par l'intermédiaire du porte-lampe 3. Ce porte-lampe 3 est fixé à la base du réflecteur 1 au moyen de pattes de sertissage non visibles sur la figure 1. Par exemple, le porte-lampe peut être serti sur le réflecteur par au moins trois pattes de sertissage. Une patte supplémentaire, non sertie, peut assurer un indexage du porte-lampe afin de lui donner un positionnement angulaire. Le porte-lampe 3 est apte à recevoir la lampe H11. La lampe H11 2 est verrouillée par une rotation d'un quart de tour sur le porte-lampe 3. Ce verrouillage est obtenu grâce à un dispositif à baïonnette avec fonction anti-retour. Une fois la lampe H11 verrouillée dans le porte-lampe, sa focalisation est assurée par le positionnement du porte-lampe dans le réflecteur.The lamp H11 is held behind the reflector 1 via the lamp holder 3. This lamp holder 3 is fixed to the base of the reflector 1 by means of crimping tabs not visible on the figure 1 . For example, the lamp holder can be crimped on the reflector by at least three crimping tabs. An additional leg, not crimped, can index the lamp holder to give it an angular position. The lamp holder 3 is able to receive the lamp H11. The H11 lamp 2 is locked by a quarter-turn rotation on the lamp holder 3. This locking is achieved through a bayonet device with anti-return function. Once the H11 lamp locked in the lamp holder, its focus is ensured by the positioning of the lamp holder in the reflector.

L'espace existant entre le porte-lampe 3 et le boîtier 5 est fermé par un dispositif d'étanchéité 4. Ce dispositif d'étanchéité peut être une bonnette réalisée dans un matériau élastique et étanche à l'eau. Elle peut être réalisée, par exemple, en caoutchouc ou en silicone. Cette bonnette 4 assure l'étanchéité en partie arrière du projecteur, entre le porte-lampe et le boîtier. La bonnette est montée autour du porte-lampe de façon à être en contact avec un flanc 33 du porte-lampe, c'est-à-dire la face circulaire extérieure du porte-lampe, appelée aussi pourtour du porte-lampe. La bonnette est montée sur le porte-lampe de façon à ce que la lampe H11 soit accessible par l'extérieur du projecteur, sans démontage de la bonnette. Ainsi, lorsque la lampe H11 doit être remplacée, celle-ci peut être démontée puis remontée sans qu'il soit nécessaire de démonter la bonnette, limitant ainsi les risques d'intégration d'humidité dans le boîtier.The space between the lamp holder 3 and the housing 5 is closed by a sealing device 4. This sealing device may be a windshield made of an elastic material and waterproof. It can be made, for example, of rubber or silicone. This windshield 4 seals the rear part of the projector, between the lamp holder and the housing. The winder is mounted around the lamp holder so as to be in contact with a flank 33 of the lamp holder, that is to say the outer circular face of the lamp holder, also called around the lamp holder. The windscreen is mounted on the lamp holder so that the lamp H11 is accessible from the outside of the projector, without disassembling the windscreen. Thus, when the H11 lamp is to be replaced, it can be disassembled and reassembled without the need to disassemble the windshield, thus limiting the risk of moisture integration in the housing.

La bonnette 4, représentée sur la figure 1, est une bonnette en caoutchouc, à soufflets, comportant une face externe circulaire 41 et une face interne circulaire 42. La bonnette 4 a une forme de disque évidé en son centre et dont l'épaisseur est adaptée à la hauteur du porte-lampe. La face interne circulaire 42 de la bonnette 4 a des dimensions adaptées au pourtour du porte-lampe. En particulier, la profondeur de la face interne 42 correspond sensiblement à la hauteur du pourtour du porte-lampe. Cette face interne 42 comporte une pluralité de lèvres 43, c'est-à-dire des bossages circulaires formés sur toute la circonférence de la face. Entre deux lèvres 43, sont formés des stries circulaires 44, appelés rigoles. Comme expliqué précédemment, les lèvres 43 et les rigoles 44 ont pour rôle d'augmenter la rugosité de la bonnette contre le flanc 33 du porte-lampe afin de permettre une meilleure accroche de la bonnette sur le porte-lampe. Ces lèvres et ces rigoles ont également pour rôle d'améliorer l'étanchéité du projecteur. En effet, lorsqu'il y a un mouvement d'air, la pression de l'air qui tend à faire passer l'humidité d'un côté de la bonnette vers l'autre côté de la bonnette diminue à chaque lèvre, de sorte que la pression devient nulle ou quasiment nulle à proximité de la dernière lèvre. Ces lèvres et ces rigoles permettent donc d'absorber l'humidité afin que celle-ci ne pénètre pas à l'intérieur du boîtier.The windshield 4, shown on the figure 1 , is a rubber bellows bellows, having a circular outer face 41 and a circular inner face 42. The cup 4 has a disc shape hollowed at its center and whose thickness is adapted to the height of the lamp holder. The circular inner face 42 of the cup 4 has dimensions adapted to the periphery of the lamp holder. In particular, the depth of the inner face 42 substantially corresponds to the height of the periphery of the lamp holder. This inner face 42 has a plurality of lips 43, that is to say circular bosses formed on the entire circumference of the face. Between two 43, are formed circular grooves 44, called channels. As explained above, the lips 43 and the channels 44 have the role of increasing the roughness of the windscreen against the flank 33 of the lamp holder to allow a better grip of the windshield on the lamp holder. These lips and these channels also have the role of improving the tightness of the projector. Indeed, when there is a movement of air, the pressure of the air that tends to pass moisture from one side of the windshield to the other side of the windshield decreases at each lip, so that the pressure becomes zero or almost zero near the last lip. These lips and these channels thus absorb moisture so that it does not penetrate inside the housing.

Pour maintenir la bonnette 4 autour du porte-lampe 3, le dispositif de l'invention comporte des moyens de fixation réalisés sur le porte-lampe. Ces moyens de fixation comportent au moins un ergot 31 formé sur le flanc 33 du porte-lampe 3. Dans l'exemple de la figure 1, le porte-lampe 3 est équipé de trois ergots 31 répartis régulièrement sur le pourtour du porte-lampe, à des angles d'environ 120° les uns des autres. Chaque ergot 31 a pour rôle de s'insérer dans une rigole 44 formée entre deux lèvres 43 de la face interne 42 de la bonnette, de sorte que la bonnette est attachée par cet ergot au flanc du porte-lampe.To keep the windshield 4 around the lamp holder 3, the device of the invention comprises fixing means made on the lamp holder. These fixing means comprise at least one lug 31 formed on the sidewall 33 of the lamp holder 3. In the example of FIG. figure 1 , the lamp holder 3 is equipped with three pins 31 regularly distributed around the periphery of the lamp holder, at angles of about 120 ° from each other. Each pin 31 has the role of being inserted in a channel 44 formed between two lips 43 of the inner face 42 of the windshield, so that the windshield is attached by this lug to the side of the lamp holder.

Dans le mode de réalisation préféré de l'invention, les moyens de fixation comportent trois ergots 31 répartis sur le flanc 33 du porte-lampe, assurant une retenue de la bonnette sur tout le pourtour du porte-lampe. Ces trois ergots peuvent être répartis de façon à être alignés sur le flanc du porte-lampe, ce qui a pour effet que les trois ergots s'insèrent dans une même rigole 44 de la bonnette. Ils peuvent aussi être répartis de façon à être décalés les uns des autres, de sorte que chaque ergot s'insère dans une rigole différente, ce qui renforce encore le maintien en position fixe de la bonnette sur le porte-lampe.In the preferred embodiment of the invention, the fixing means comprise three lugs 31 distributed on the flank 33 of the lamp holder, ensuring retention of the windscreen all around the lamp holder. These three pins can be distributed so as to be aligned on the side of the lamp holder, which has the effect that the three lugs fit into the same channel 44 of the windscreen. They can also be distributed so as to be offset from each other, so that each lug fits into a different channel, which further enhances the holding in the fixed position of the windshield on the lamp holder.

Dans le mode de réalisation de la figure 1, les moyens de fixation comportent, en plus des ergots, au moins une collerette de maintien annulaire 32. Cette collerette annulaire 32 est un rebord réalisé sur tout le pourtour du porte-lampe. Cette collerette 32 est réalisée à une première extrémité du flanc 33 du porte-lampe, à proximité du réflecteur. Cette collerette 32 constitue une première butée pour la bonnette 4, qui empêche ladite bonnette de glisser vers le réflecteur.In the embodiment of the figure 1 , the fastening means comprise, in addition to lugs, at least one annular retaining flange 32. This annular flange 32 is a flange made on the entire periphery of the lamp holder. This flange 32 is formed at a first end of the sidewall 33 of the lamp holder, near the reflector. This flange 32 constitutes a first stop for the windshield 4, which prevents said windshield from sliding towards the reflector.

Dans une variante de l'invention, le porte-lampe 3 comporte une seconde collerette annulaire 34, réalisée à une seconde extrémité du flanc 33 du porte-lampe, à proximité du module de connexion 24 de la lampe H11. Cette seconde collerette 34 peut être identique à la première collerette 32, réalisée selon la même technique, décrite ultérieurement, que ladite première collerette 32. Cette seconde collerette 34 constitue une seconde butée pour la bonnette 4, qui empêche ladite bonnette de glisser vers le module de connexion 24. Un exemple d'un tel porte-lampe à deux collerettes est représenté sur la figure 4.In a variant of the invention, the lamp holder 3 comprises a second annular flange 34, made at a second end of the flank 33 of the lamp holder, near the connection module 24 of the lamp H11. This second flange 34 may be identical to the first flange 32, made according to the same technique, described later, than said first flange 32. This second flange 34 constitutes a second stop for the windscreen 4, which prevents said windscreen from sliding towards the module 24. An example of such a lamp holder with two flanges is shown in FIG. figure 4 .

Il est à noter que, quels que soient les moyens de fixation choisis (un ou plusieurs ergots et/ou une ou deux collerettes), le porte-lampe assure une fonction de maintien de la bonnette. Le porte-lampe, selon l'invention, a donc une double fonction, à savoir une fonction de maintien de la lampe et une fonction de support de la bonnette afin d'assurer l'étanchéité.It should be noted that, whatever the means of attachment chosen (one or more lugs and / or one or two flanges), the lamp holder provides a function of holding the windshield. The lamp holder, according to the invention, therefore has a dual function, namely a function of holding the lamp and a support function of the windshield to ensure sealing.

Sur la figure 2, on a représenté une vue en coupe de côté du projecteur de lumière de la figure 1. Cette figure 2 montre la lampe H11 2 lorsqu'elle est installée dans le porte-lampe 3 qui est lui-même monté dans le réflecteur 1. Cette figure 2 montre aussi la bonnette 4 installée entre le porte-lampe 3 et le boîtier 5. Comme expliqué précédemment, la bonnette 4 est une bonnette à soufflets, c'est-à-dire qu'elle est réalisée en matériau souple apte à former des zigzags entre ses deux faces fixes 41 et 42.On the figure 2 , there is shown a side sectional view of the light projector of the figure 1 . This figure 2 shows the lamp H11 2 when it is installed in the lamp holder 3 which is itself mounted in the reflector 1. This figure 2 also shows the windshield 4 installed between the lamp holder 3 and the housing 5. As explained above, the windshield 4 is a bellows windshield, that is to say it is made of flexible material capable of forming zigzags between its two fixed faces 41 and 42.

La figure 3 représente en détail la face interne circulaire 42 de la bonnette 4, montée contre le flanc 33 du porte-lampe 3. Cette face interne 42 de la bonnette comporte des lèvres 43 séparées par des rigoles 44. Ces rigoles ont été représentées schématiquement avec une forme triangulaire. On comprendra que ces rigoles peuvent avoir différentes géométries, dès lors qu'elles constituent un interstice continu circulaire entre deux lèvres. Chaque rigole 44 est apte à former un logement pouvant recevoir un ergot 31. Dans l'exemple de la figure 3, l'ergot 31 est inséré dans la troisième rigole 44, c'est-à-dire la rigole la plus proche du réflecteur.The figure 3 shows in detail the circular inner face 42 of the windshield 4, mounted against the sidewall 33 of the lamp holder 3. This inner face 42 of the windshield has lips 43 separated by channels 44. These channels have been shown schematically with a shape triangular. It will be understood that these channels may have different geometries, since they constitute a continuous continuous gap between two lips. Each channel 44 is adapted to form a housing that can receive a lug 31. In the example of the figure 3 , the pin 31 is inserted into the third channel 44, that is to say the channel closest to the reflector.

Cette figure 3 montre également la collerette 32 qui forme une butée pour la bonnette.This figure 3 also shows the collar 32 which forms a stop for the windshield.

Dans le mode de réalisation préféré de l'invention, le porte-lampe est réalisé en tôle emboutie. La tôle a l'avantage d'être facile à mettre en forme, notamment par poinçonnage, découpe et emboutissage. En particulier, la tôle peut être une tôle de type DC04 bénéficiant d'un traitement zinc-nickel. L'utilisation d'une telle tôle, dans l'invention, permet de réaliser facilement et à moindre coût les ergots 31 et la collerette 32. Les ergots 31 peuvent être fabriqués par poinçonnage de la tôle du porte-lampe. Le poinçonnage consiste à faire une découpe dans la tôle au moyen d'un poinçon. La partie de tôle découpée est ensuite déformée afin de créer une saillie formant un ergot. Cet ergot est donc un crevé qui est rabattu pour former une saillie.In the preferred embodiment of the invention, the lamp holder is made of stamped sheet metal. The sheet has the advantage of being easy to shape, especially by punching, cutting and stamping. In particular, the sheet may be a sheet of DC04 type benefiting from zinc-nickel treatment. The use of such a sheet in the invention makes it easy and inexpensive to produce the lugs 31 and the flange 32. The lugs 31 can be produced by punching the sheet of the lamp holder. Punching consists of making a cut in the sheet by means of a punch. The cut sheet portion is then deformed to create a projection forming a lug. This pin is a puncture that is folded to form a projection.

La collerette 32 peut être fabriquée en déformant l'extrémité de la tôle du porte-lampe proche du réflecteur. Cette déformation permet de créer un rebord, à l'extrémité du porte-lampe, faisant saille par rapport au flanc 33 dudit porte-lampe.The flange 32 may be manufactured by deforming the end of the plate of the lamp holder near the reflector. This deformation makes it possible to create a rim, at the end of the lamp holder, projecting from the sidewall 33 of said lamp holder.

Comme cela apparaît à la figure 4, des évents 35 sont prévus dans un flanc du porte-lampe 3. Ces évents 35, au nombre de 3 dans cette forme de réalisation, sont prévus pour permettre une évacuation de la chaleur dégagée par la source lumineuse 2.As it appears in figure 4 , vents 35 are provided in a side of the lamp holder 3. These vents, 3 in this embodiment, are provided to allow evacuation of the heat released by the light source 2.

Lorsque la bonnette 4 est mise en place autour du porte-lampe, les ergots 31 du porte-lampe se logent entre deux lèvres 43 de la face interne 42 de la bonnette et la collerette 32 retient la bonnette le long du flanc du porte-lampe. De cette façon, les ergots 31 constituent des accroches pour la bonnette et la collerette 32 constitue une butée pour cette même bonnette. Dans la variante à deux collerettes de la figure 4, la butée est assurée aux deux extrémités du porte-lampe.When the windshield 4 is placed around the lamp holder, the lugs 31 of the lamp holder are housed between two lips 43 of the inner face 42 of the windshield and the flange 32 holds the windscreen along the side of the lamp holder. . In this way, the lugs 31 are hooks for the windshield and the collar 32 constitutes a stop for this windshield. In the two-flange variant of the figure 4 the stop is provided at both ends of the lamp holder.

Ainsi, en cas de vibrations du projecteur, la bonnette 4 est maintenue en place, d'une part, par les ergots 31 insérés dans les rigoles 44 de la bonnette et, d'autre part, par la ou les collerette (s) qui empêche(nt) tout glissement de la bonnette vers le réflecteur et/ou le module de connexion de la lampe H11. Il n'y a donc pas de mouvement possible de la bonnette axialement, c'est-à-dire suivant l'axe X. Comme la bonnette est maintenue fixe autour du porte-lampe, l'étanchéité est assurée par la bonnette quelles que soient les mouvements de la lampe par rapport au boîtier du projecteur. Il est à noter, par ailleurs, que la lampe H11 étant une lampe à baïonnette, l'étanchéité entre la lampe et le porte-lampe est assurée par le système de baïonnette de la lampe elle-même.Thus, in the event of vibrations of the headlamp, the windshield 4 is held in place, on the one hand, by the lugs 31 inserted in the channels 44 of the windshield and, on the other hand, by the flange (s) which prevents (s) any sliding of the windshield towards the reflector and / or the connection module of the lamp H11. There is therefore no possible movement of the windshield axially, that is to say along the axis X. As the windshield is held fixed around the lamp holder, the seal is provided by the windshield whatever the movements of the lamp in relation to the projector casing. It should be noted, moreover, that the H11 lamp being a bayonet lamp, the seal between the lamp and the lamp holder is provided by the bayonet system of the lamp itself.

Comme expliqué précédemment, le porte-lampe est réalisé en tôle emboutie, dans le mode de réalisation préféré. Dans ce cas, le réflecteur peut également être réalisé en tôle emboutie. La tôle présente l'avantage d'être un matériau relativement peu coûteux et facile à mettre en forme. Les réflecteurs en tôle peuvent donc être produis en grande quantité avec une forme de base, identique pour tous les modèles de réflecteurs, mise en forme en fin de fabrication pour adapter le contour du réflecteur à des utilisations particulières.As explained above, the lamp holder is made of pressed sheet metal, in the preferred embodiment. In this case, the reflector may also be made of stamped sheet metal. The sheet has the advantage of being a relatively inexpensive material and easy to shape. The sheet reflectors can therefore be produced in large quantities with a basic shape, identical for all reflector models, shaped at the end of manufacture to adapt the contour of the reflector to particular uses.

Claims (11)

  1. Device for projection of light for a motor vehicle, comprising a case (5) equipped with:
    - a source of light (2);
    - a reflector (1) which can reflect the light emitted by the source of light (2);
    - a lamp-holder (3) which can maintain the source of light in front of the reflector (1);
    - a shield (4) which can assure the sealing between the lamp-holder (3) and the case (5), this shield (4) comprising an inner circular surface (42) in contact with the periphery of the lamp-holder and an outer circular surface (41) in contact with the case, the inner surface being provided with lips (43),
    characterised in that the lamp-holder comprises securing means (31, 32) which assure axial retention of the shield (4), these securing means comprising at least one lug (31) which is provided on a periphery (33) of the lamp-holder.
  2. Device according to claim 1, characterised in that the securing means comprise at least one annular flange (32) which is formed at one end of the periphery (33) of the lamp-holder, in order to provide a stop on the shield (4).
  3. Device according to either of claims 1 and 2, characterised in that the lug (31) has dimensions which are designed to be inserted in a groove (44) between two lips (43) of the shield.
  4. Device according to any one of claims 1 to 3, characterised in that the securing means comprise three lugs distributed regularly on the periphery of the lamp-holder.
  5. Device according to any one of claims 2 to 4, characterised in that the securing means comprise a second annular flange (34) which is formed at a second end of the periphery (33) of the lamp-holder, in order to provide a second stop on the shield.
  6. Device according to any one of claims 1 to 5, characterised in that the lamp-holder is made of buckled plate.
  7. Device according to any one of claims 1 to 6, characterised in that the lug is formed by cutting or punching the plate of the lamp-holder.
  8. Device according to claims 2 and 6, characterised in that the flange is formed by deformation of the plate at one end of the periphery of the lamp-holder.
  9. Device according to any one of claims 1 to 8, characterised in that the lamp-holder is designed to receive a halogen lamp of type H11 as the source of light (2).
  10. Device according to any one of claims 1 to 9, characterised in that the lamp-holder comprises at least one vent which permits discharge of the heat released by the source of light (2).
  11. Motor vehicle, characterised in that it comprises a device for projection of light according to any one of the preceding claims.
EP06291829A 2005-12-02 2006-11-28 Device for fastening a cap in a vehicle headlight Not-in-force EP1793160B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0512282A FR2894320B1 (en) 2005-12-02 2005-12-02 DEVICE FOR FIXING A BONNETTE IN A MOTOR VEHICLE PROJECTOR.

Publications (2)

Publication Number Publication Date
EP1793160A1 EP1793160A1 (en) 2007-06-06
EP1793160B1 true EP1793160B1 (en) 2009-01-28

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Family Applications (1)

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EP06291829A Not-in-force EP1793160B1 (en) 2005-12-02 2006-11-28 Device for fastening a cap in a vehicle headlight

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EP (1) EP1793160B1 (en)
AT (1) ATE422034T1 (en)
DE (1) DE602006005031D1 (en)
ES (1) ES2318703T3 (en)
FR (1) FR2894320B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI413744B (en) * 2011-03-15 2013-11-01 Kwang Yang Motor Co The vehicle is easy to set up waterproof structure
CN102691954B (en) * 2011-03-25 2014-06-11 光阳工业股份有限公司 Vehicular easily-assembled waterproof lamp structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6116A (en) 1849-02-20 Improvement in spark and gas consumers
US5390088A (en) * 1992-12-16 1995-02-14 Ichikoh Industries, Ltd. Vehicle lamp device
US5551245A (en) 1995-01-25 1996-09-03 Engelhard/Icc Hybrid air-conditioning system and method of operating the same
JP2965849B2 (en) * 1994-03-09 1999-10-18 株式会社小糸製作所 Vehicle lighting
JPH1186625A (en) * 1997-09-04 1999-03-30 Stanley Electric Co Ltd Waterproof construction of luminaire for vehicle
DE19924355A1 (en) * 1999-05-27 2000-12-07 Philips Corp Intellectual Pty lamp
FR2822526B1 (en) * 2001-03-21 2003-09-26 Valeo Vision LIGHT PROJECTOR FOR VEHICLE, AND DEVICE FOR FIXING A LAMP FOR SUCH A PROJECTOR

Also Published As

Publication number Publication date
EP1793160A1 (en) 2007-06-06
FR2894320A1 (en) 2007-06-08
DE602006005031D1 (en) 2009-03-19
FR2894320B1 (en) 2010-03-26
ATE422034T1 (en) 2009-02-15
ES2318703T3 (en) 2009-05-01

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