EP0561701B1 - Coloured light-emitting signal lamp for motor vehicles - Google Patents

Coloured light-emitting signal lamp for motor vehicles Download PDF

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Publication number
EP0561701B1
EP0561701B1 EP93400684A EP93400684A EP0561701B1 EP 0561701 B1 EP0561701 B1 EP 0561701B1 EP 93400684 A EP93400684 A EP 93400684A EP 93400684 A EP93400684 A EP 93400684A EP 0561701 B1 EP0561701 B1 EP 0561701B1
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EP
European Patent Office
Prior art keywords
bulb
signal lamp
screen
filament
light
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Expired - Lifetime
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EP93400684A
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German (de)
French (fr)
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EP0561701A1 (en
Inventor
Fermin Gonzalez
José Ordonez
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Valeo Vision SAS
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Valeo Vision SAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/255—Filters

Definitions

  • the present invention relates to a signaling light, in particular for a motor vehicle, capable of emitting light radiation colored signaling device, of the type comprising a closing lens colorless, a means of reflection such as a reflector, a filament lamp, a means for coloring the light radiation coming from the filament and a means for at least partially masking said coloring means way to give the extinguished traffic light an external appearance essentially colorless.
  • the current trend is to give all of the exterior surfaces of vehicle lighting devices, whether at the front or rear of the vehicle, a color and a relatively appearance uniforms, especially at the front of the vehicle.
  • Such a fire includes a lamp, emitting white light, a reflector and colorless closing glass.
  • This light also includes a colored filter balloon, for example amber in color for a fire flashing, which is interposed between the lamp and the reflector.
  • This balloon has on its outer face a cover, for example reflective, which is provided in certain areas (bands ...) of the balloon and which contributes to reduce the amber aspect of the fire when the lamp is out and it is observed from the outside.
  • the balloon is of relatively large size, because it must leave enough space around the lamp to avoid excessive heating inside of it. In addition, it should not be the cover covers an excessive portion of the surface of the balloon, because it influences the light output which cannot be excessively reduced. For these reasons, the amber color of the extinguished fire as observed from the exterior is certainly attenuated, but it remains perceptible.
  • the document EP - A - 371 553 describes a lamp type H4 for projector, the bulb of which incorporates a colored translucent interference filter which allows color the beam emitted by the lamp and includes on its front side coating not transparent to spokes luminous.
  • This coating does not perform the function of a means of masking when the fire is out but is designed to intercept the direct light flux emitted by the lamp so that the illumination of said projector meets photometric standards.
  • Such a traffic light which includes a lamellar wall interposed between the colorless glass and the opaque cover, does not take up space negligible, said opaque cover having neither the shape adequate position relative to the bulb of the lamp to form a masking means giving the extinguished fire a colorless appearance.
  • the present invention provides a signaling light according to claim 1 of the this request.
  • frontal region of the colored bulb of the lamp is understood to mean the region of said bulb opposite the closing glass.
  • neutral appearance means a color, possibly metallic, which presents when the fire is out and exposes to a exterior radiation a color and brightness similar to those parts close to the fire, in particular its means of reflection.
  • the only colored part of it is constituted by the lateral parts of the colored bulb of the lamp.
  • These parts lateral are parts of small dimension and located laterally by relation to the optical axis of the fire.
  • the cover being of reduced dimensions, it is located so more discreet inside the fire.
  • the cover consists in a hollow body of which a concave face, turned towards the lamp, is reflective.
  • the cache thus also forms a recuperator of the flow emitted forward by the filament, to return it to the means of reflection.
  • the opaque cover of neutral appearance is consisting of an aluminized coating formed on the front region of the bulb.
  • said cache opaque is a neutral metallic paint applied to the frontal region bulb.
  • This paint can advantageously be gray in color or similar.
  • the opaque cover is a screen which is applied tightly to the frontal region of said colored bulb of the lamp and is fixed by fixing means for example on the reflector.
  • This screen is made up by a metal or any material that can withstand the temperature generated by the lamp. It is painted or provided with a coating reflecting on its outer face.
  • This traffic light likely to emit light signaling radiation, includes a reflection means 20, a filament lamp 30 and a crystal colorless closure 10 closing the light at the front.
  • the reflection means can consist of any optical device able to return at least part of the radiation to the ice 10 emitted by the filament towards the rear. In this case it is a reflector of the parabolic genus, defining a focal point F in the vicinity of the filament and a optical axis X - X '.
  • the filament lamp 30 advantageously comprises a colored bulb 31 giving the colored luminous radiation of the signaling light.
  • the color of the bulb is amber.
  • this colored bulb 31 includes an opaque cover 41 neutral or reflective at least partially covering the frontal region of the colored bulb of the lamp, located opposite the crystal colorless closure 10.
  • this cache is essentially hemispherical and preferably has on its convex outer surface, i.e. a reflective aluminized coating, i.e. a neutral metallic paint, by example of gray, mat or shiny color.
  • the colored bulb When the fire of figure 1 is lit, the colored bulb colors the light rays emitted by the filament, these being reflected on the wall of the reflector in a direction close to the optical axis X - X 'and at through the colorless closing glass 10.
  • the Figure 1 signaling when the Figure 1 signaling is off, it has an external appearance essentially colorless, because the opaque cover covering the frontal region of the bulb at least partially masks the colored parts thereof for a fairly wide range of viewing angles.
  • the light rays coming from outside and meeting the outside surface of the cover are reflected, diffused or part absorbed, the reflected or scattered rays keeping the same color.
  • This signal light includes an opaque cover consisting of a screen 42 of neutral or reflective appearance applying to the region front of the colored bulb 31 of the lamp 30, colorless closure 10.
  • This screen 42 is a piece of metal or of heat-resistant material emitted by the lamp in illumination. This screen can be made by molding, stamping or forging, depending on the type of material used.
  • the screen 42 can advantageously be coated on its face. convex outer surface of a reflective aluminized layer or of a neutral, matt or metallic paint, or a layer of zinc protection.
  • the concave inner face of the screen 42 is reflective, for example aluminized, the screen thus constituting a means of recovery of the luminous flux emitted by the filament towards the front, for send back to the thinking medium so that it participates in the beam formed, the light output is thus preserved.
  • the screen can be hemispherical and centered in the vicinity of the filament.
  • this screen 42 includes thin fixing lugs 43.44 placed respectively in two diametrically opposite regions, for example above and below the lamp 30, and coming to be fixed on the reflector 20 in the vicinity of the lamp hole.
  • fixing notches 43 ', 44' are provided on the reflector 20 to receive the fixing lugs 43.44 of the opaque screen 42.
  • this opaque screen has the same functions as the aluminized coating or the neutral paint of figure 1 and presents plus the advantage of not requiring special treatment on the lamp, which can be an ordinary lamp with colored bulb.
  • the fixing lugs 43,44 are narrow enough to at least obscure the radiation from filament.
  • the opaque recuperator screen covers essentially the same area of the bulb as the aluminized coating or the painting in figure 1.
  • the opaque cover is a screen 42 of neutral or reflective appearance which is fixed on a lateral part of the reflector 20, by means of a wall 45 extending from one side of said screen 42, towards the rear and essentially parallel to the axis optical.
  • This side wall 45 also makes it possible to dissipate the heat accumulated in the screen under the effect of the radiation from the lamp.
  • This mode of implementation is advantageously used in traffic lights of narrow width and reduced volume.
  • a fire produced according to the present invention may be a colorless front flashing light located in the vicinity of a transparent window, or a rear signal light (flashing, position light, brake light, ...) placed for example in the vicinity of a reversing light, or in a symmetrical position of a reversing light provided for the opposite side of the vehicle.
  • the cover can be designed on its face concave interior to at least partially absorb the radiation from the filament.

Description

La présente invention concerne un feu de signalisation, notamment pour véhicule automobile, susceptible d'émettre un rayonnement lumineux de signalisation coloré, du type comprenant une glace de fermeture incolore, un moyen de réflexion tel qu'un réflecteur, une lampe à filament, un moyen pour colorer le rayonnement lumineux issu du filament et un moyen pour masquer au moins partiellement ledit moyen de coloration de manière à donner au feu de signalisation éteint un aspect extérieur essentiellement incolore.The present invention relates to a signaling light, in particular for a motor vehicle, capable of emitting light radiation colored signaling device, of the type comprising a closing lens colorless, a means of reflection such as a reflector, a filament lamp, a means for coloring the light radiation coming from the filament and a means for at least partially masking said coloring means way to give the extinguished traffic light an external appearance essentially colorless.

Dans un certain nombre de feux de signalisation à rayonnement coloré existants, la coloration du feu est donnée par la glace ou le globe de fermeture du feu, qui est teintée de façon appropriée. Cependant, sur un plan esthétique, on a constaté que certaines de ces teintes données aux glaces de fermeture des feux s'assemblaient de façon peu harmonieuse avec les parties voisines du véhicule. En particulier, la couleur ambre ou jaune orangé, utilisée pour les clignotants avant des véhicules automobiles se marie fort mal l'aspect des projecteurs voisins et l'esthétique globale du véhicule est ainsi dégradée.In a number of radiation signal lights colored existing, the coloring of the fire is given by the ice or the globe of closing the fire, which is tinted appropriately. However, on a aesthetically, we found that some of these colors given to lights for closing the lights were not very harmonious with the neighboring parts of the vehicle. In particular, the color amber or yellow orange, used for the front indicators of motor vehicles The aspect of neighboring spotlights and the overall aesthetics of the vehicle is thus degraded.

A cet égard, la tendance actuelle est de donner à l'ensemble des surfaces extérieures des dispositifs d'éclairage d'un véhicule, que ce soit à l'avant ou à l'arrière du véhicule, une couleur et un aspect relativement uniformes, en particulier à l'avant du véhicule.In this regard, the current trend is to give all of the exterior surfaces of vehicle lighting devices, whether at the front or rear of the vehicle, a color and a relatively appearance uniforms, especially at the front of the vehicle.

Ainsi, on connaít déjà de la technique antérieure, notamment par la demande de brevet français n° 2 476 798 au nom de la Demanderesse, un feu de signalisation auquel on a donné, lorsqu'il est éteint, un aspect extérieur incolore.Thus, we already know from the prior art, in particular by French patent application No. 2,476,798 in the name of the Applicant, a signaling light which has been given an appearance when it is switched off colorless exterior.

Un tel feu comprend une lampe, émettant une lumière blanche, un réflecteur et une glace de fermeture incolore. Ce feu comprend de plus un ballon formant filtre coloré, par exemple de couleur ambre pour un feu clignotant, qui est interposé entre la lampe et le réflecteur. Ce ballon comporte sur sa face extérieure un cache, par exemple réfléchissant, qui est prévu dans certaines zones (bandes...) du ballon et qui contribue à atténuer l'aspect ambre du feu lorsque la lampe est éteinte et qu'il est observé de l'extérieur. Such a fire includes a lamp, emitting white light, a reflector and colorless closing glass. This light also includes a colored filter balloon, for example amber in color for a fire flashing, which is interposed between the lamp and the reflector. This balloon has on its outer face a cover, for example reflective, which is provided in certain areas (bands ...) of the balloon and which contributes to reduce the amber aspect of the fire when the lamp is out and it is observed from the outside.

Cependant ce feu de signalisation présente un certain nombre d'inconvénients.However, this traffic light presents a certain number disadvantages.

Le ballon est de dimension relativement importante, car il doit laisser autour de la lampe un espace suffisamment grand pour éviter un échauffement excessif à l'intérieur de celui-ci. En outre, il ne faut pas que le cache recouvre une portion excessive de la surface du ballon, car il influe sur le rendement lumineux qui ne peut être excessivement réduit. Pour ces raisons, la coloration ambre du feu éteint telle qu'observée de l'extérieur est certes atténuée, mais elle reste cependant perceptible.The balloon is of relatively large size, because it must leave enough space around the lamp to avoid excessive heating inside of it. In addition, it should not be the cover covers an excessive portion of the surface of the balloon, because it influences the light output which cannot be excessively reduced. For these reasons, the amber color of the extinguished fire as observed from the exterior is certainly attenuated, but it remains perceptible.

Le document EP - A - 371 553 décrit une lampe de type H4 pour projecteur, dont le bulbe incorpore un filtre translucide coloré d'interférence qui permet de colorer le faisceau émis par la lampe et comprend sur sa face frontale un revêtement non transparent aux rayons lumineux.The document EP - A - 371 553 describes a lamp type H4 for projector, the bulb of which incorporates a colored translucent interference filter which allows color the beam emitted by the lamp and includes on its front side coating not transparent to spokes luminous.

Ce revêtement généralement de couleur noire, compte tenu de la forme particulière à section constante du bulbe de la lampe H4, ne remplit pas la fonction d'un moyen de masquage lorsque le feu est éteint, mais est prévu pour intercepter le flux lumineux direct émis par la lampe de sorte que l'éclairement dudit projecteur satisfait aux normes photométriques.This coating, generally black in color, counts given the particular shape with constant section of the H4 lamp bulb, does not perform the function of a means of masking when the fire is out but is designed to intercept the direct light flux emitted by the lamp so that the illumination of said projector meets photometric standards.

Le document DE - 29 42 260 décrit un feu de signalisation qui présente les caractéristiques du préambule de la revendication 1 de la présente demande de brevet.Document DE - 29 42 260 describes a traffic light signaling which presents the characteristics of the preamble to claim 1 of this application for patent.

Toutefois, un tel feu de signalisation qui comporte une paroi à lamelles interposées entre la glace incolore et le cache opaque, présente un encombrement non négligeable, ledit cache opaque ne présentant ni la forme adéquate ni la position par rapport au bulbe de la lampe pour former un moyen de masquage donnant au feu éteint un aspect incolore.However, such a traffic light which includes a lamellar wall interposed between the colorless glass and the opaque cover, does not take up space negligible, said opaque cover having neither the shape adequate position relative to the bulb of the lamp to form a masking means giving the extinguished fire a colorless appearance.

Afin de pallier les différents inconvénients de la technique antérieure, la présente invention propose un feu de signalisation selon la revendication 1 de la présente demande.In order to overcome the various disadvantages of the prior art, the present invention provides a signaling light according to claim 1 of the this request.

On entend ici par région frontale du bulbe coloré de la lampe, la région dudit bulbe en vis-à-vis de la glace de fermeture.The term frontal region of the colored bulb of the lamp is understood to mean the region of said bulb opposite the closing glass.

Par ailleurs, on entend par "aspect neutre" une couleur, éventuellement métallisée, qui présente lorsque le feu est éteint et expose à un rayonnement extérieur une couleur et une luminosité semblables à celles des parties voisines du feu, en particulier de son moyen de réflexion.Furthermore, the term "neutral appearance" means a color, possibly metallic, which presents when the fire is out and exposes to a exterior radiation a color and brightness similar to those parts close to the fire, in particular its means of reflection.

Ainsi, lorsque le feu est éteint, la seule partie colorée de celui-ci est constituée par les parties latérales du bulbe coloré de la lampe. Ces parties latérales sont des parties de faible dimension et situées latéralement par rapport à l'axe optique du feu.So when the fire is out, the only colored part of it is constituted by the lateral parts of the colored bulb of the lamp. These parts lateral are parts of small dimension and located laterally by relation to the optical axis of the fire.

De ce fait, lorsque le feu, éteint, reçoit une lumière diffuse. ou même un rayonnement concentré en direction plongeante, la proportion des rayons qui traversent les parties latérales du bulbe et qui ressortent par la glace est faible.Therefore, when the fire, extinguished, receives a diffuse light. or even a radiation concentrated in plunging direction, the proportion of rays which pass through the lateral parts of the bulb and which emerge through the ice is low.

En outre, le cache étant de dimensions réduites, il se situe de façon plus discrète à l'intérieur du feu. In addition, the cover being of reduced dimensions, it is located so more discreet inside the fire.

Selon un aspect préféré de la présente invention, le cache consiste en un corps creux dont une face concave, tournée vers la lampe, est réfléchissante. Le cache forme ainsi également un récupérateur du flux émis vers l'avant par le filament, pour le renvoyer vers le moyen de réflexion.According to a preferred aspect of the present invention, the cover consists in a hollow body of which a concave face, turned towards the lamp, is reflective. The cache thus also forms a recuperator of the flow emitted forward by the filament, to return it to the means of reflection.

Suivant un premier mode de réalisation concrète du feu de signalisation selon l'invention, le cache opaque d'aspect neutre est constitué par un revêtement aluminé formé sur la région frontale du bulbe.According to a first concrete embodiment of the signaling according to the invention, the opaque cover of neutral appearance is consisting of an aluminized coating formed on the front region of the bulb.

Suivant un deuxième mode de réalisation concrète ledit cache opaque est une peinture neutre métallisée appliquée sur la région frontale du bulbe. Cette peinture peut être avantageusement de couleur grise ou analogue.According to a second concrete embodiment, said cache opaque is a neutral metallic paint applied to the frontal region bulb. This paint can advantageously be gray in color or similar.

Suivant un autre mode de réalisation concrète du feu de signalisation selon l'invention, le cache opaque est un écran s'appliquant étroitement sur la région frontale dudit bulbe coloré de la lampe et se fixant par des moyens de fixation par exemple sur le réflecteur. Cet écran est constitué par un métal ou n'importe quel matériau qui puisse supporter la température générée par la lampe. Il est peint ou pourvu d'un revêtement réfléchissant sur sa face extérieure.According to another concrete embodiment of the signaling light according to the invention, the opaque cover is a screen which is applied tightly to the frontal region of said colored bulb of the lamp and is fixed by fixing means for example on the reflector. This screen is made up by a metal or any material that can withstand the temperature generated by the lamp. It is painted or provided with a coating reflecting on its outer face.

La description qui va suivre en regard des dessins annexés donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.

  • La figure 1 est une vue en coupe verticale d'un feu de signalisation selon l'invention.
  • La figure 2 est une vue en coupe verticale axiale d'une variante du mode de réalisation du feu de signalisation de la figure 1.
  • La figure 3 est une vue en coupe horizontale axiale du feu de signalisation de la figure 2.
  • La figure 4 est une vue en coupe verticale axiale d'une variante du feu de signalisation de la figure 2.
  • La figure 5 est une vue en coupe horizontale axiale du feu de signalisation de la figure 4.
The description which follows with reference to the appended drawings given by way of nonlimiting examples will make it clear what the invention consists of and how it can be implemented.
  • Figure 1 is a vertical sectional view of a signal light according to the invention.
  • FIG. 2 is a view in axial vertical section of a variant of the embodiment of the signaling light of FIG. 1.
  • FIG. 3 is a view in axial horizontal section of the signaling light in FIG. 2.
  • FIG. 4 is a view in axial vertical section of a variant of the signaling light of FIG. 2.
  • FIG. 5 is a view in axial horizontal section of the signaling light of FIG. 4.

Bien que les dessins représentent tous un feu clignotant avant, destiné à être situé au voisinage d'un projecteur, les concepts de l'invention peuvent également être utilisés pour des feux de signalisation arrière.Although the drawings all show a front flashing light, intended to be located in the vicinity of a projector, the concepts of the invention can also be used for rear signal lamps.

En référence tout d'abord à la figure 1, on a représenté un feu de signalisation selon la présente invention. Ce feu de signalisation susceptible d'émettre un rayonnement lumineux de signalisation coloré, comprend un moyen de réflexion 20, une lampe à filament 30 et une glace de fermeture incolore 10 fermant le feu à l'avant.Referring first to Figure 1, there is shown a signaling according to the present invention. This traffic light likely to emit light signaling radiation, includes a reflection means 20, a filament lamp 30 and a crystal colorless closure 10 closing the light at the front.

Le moyen de réflexion peut consister en tout dispositif optique capable de renvoyer vers la glace 10 au moins une partie du rayonnement émis par le filament vers l'arrière. En l'espèce il s'agit d'un réflecteur du genre parabolique, définissant un foyer F au voisinage du filament et un axe optique X - X'.The reflection means can consist of any optical device able to return at least part of the radiation to the ice 10 emitted by the filament towards the rear. In this case it is a reflector of the parabolic genus, defining a focal point F in the vicinity of the filament and a optical axis X - X '.

La lampe à filament 30 comporte avantageusement un bulbe coloré 31 donnant le rayonnement lumineux coloré du feu de signalisation. En l'espèce, la coloration du bulbe est de couleur ambre.The filament lamp 30 advantageously comprises a colored bulb 31 giving the colored luminous radiation of the signaling light. In the species, the color of the bulb is amber.

Par ailleurs, ce bulbe coloré 31 comprend un cache opaque 41 d'aspect neutre ou bien réfléchisant recouvrant au moins partiellement la région frontale du bulbe coloré de la lampe, située en vis-à-vis de la glace de fermeture incolore 10.Furthermore, this colored bulb 31 includes an opaque cover 41 neutral or reflective at least partially covering the frontal region of the colored bulb of the lamp, located opposite the crystal colorless closure 10.

Dans le présent exemple, ce cache est essentiellement hémisphérique et comporte de préférence sur sa surface extérieure convexe, soit un revêtement aluminé réfléchissant, soit une peinture neutre métallisée, par exemple de couleur grise, mate ou brillante.In this example, this cache is essentially hemispherical and preferably has on its convex outer surface, i.e. a reflective aluminized coating, i.e. a neutral metallic paint, by example of gray, mat or shiny color.

Lorsque le feu de la figure 1 est allumé, le bulbe coloré colore les rayons lumineux émis par le filament, ceux-ci étant réfléchis sur la paroi du réflecteur selon une direction voisine de l'axe optique X - X' et à travers la glace de fermeture incolore 10. Par contre lorsque le feu de signalisation de la figure 1 est éteint, il présente un aspect extérieur essentiellement incolore, car le cache opaque recouvrant la région frontale du bulbe masque au moins partiellement les parties colorées de celui-ci pour une gamme assez large d'angles d'observation.When the fire of figure 1 is lit, the colored bulb colors the light rays emitted by the filament, these being reflected on the wall of the reflector in a direction close to the optical axis X - X 'and at through the colorless closing glass 10. On the other hand, when the Figure 1 signaling is off, it has an external appearance essentially colorless, because the opaque cover covering the frontal region of the bulb at least partially masks the colored parts thereof for a fairly wide range of viewing angles.

En outre, lorsque le feu éteint est exposé à un éclairage extérieur diffus, comme la lumière du jour, voire un éclairage concentré plongeant, la proportion des rayons lumineux qui sont susceptibles de traverser le bulbe coloré et de ressortir du feu en direction montante, vers les yeux de l'observateur, est très faible.In addition, when the extinguished fire is exposed to outside lighting diffuse, like daylight, even a plunging concentrated lighting, the proportion of light rays that are likely to pass through the bulb colored and come out of the fire in an upward direction, towards the eyes of the observer is very weak.

Par ailleurs, les rayons lumineux provenant de l'extérieur et rencontrant la surface extérieure du cache sont réfléchis, diffusés ou en partie absorbés, les rayons réfléchis ou diffusés gardant la même couleur.In addition, the light rays coming from outside and meeting the outside surface of the cover are reflected, diffused or part absorbed, the reflected or scattered rays keeping the same color.

En référence aux figures 2 et 3, on a représenté une variante du mode de réalisation du feu de signalisation de la figure 1.Referring to Figures 2 and 3, a variant of the embodiment of the signaling light of FIG. 1.

Ce feu de signalisation comporte un cache opaque constitué par un écran 42 d'aspect neutre ou bien réfléchissant s'appliquant sur la région frontale du bulbe coloré 31 de la lampe 30, fermeture incolore 10. Cet écran 42 est une pièce en métal ou bien en matériau résistant à la chaleur émise par la lampe en éclairement. Cet écran peut être réalisé par moulage, emboutissage ou encore forgeage, suivant le type de matériau utilisé. En outre, l'écran 42 peut être revêtu avantageusement sur sa face extérieure convexe d'une couche aluminée réfléchissante ou bien d'une peinture de couleur neutre, mate ou métallisée, ou encore d'une couche de protection en zinc.This signal light includes an opaque cover consisting of a screen 42 of neutral or reflective appearance applying to the region front of the colored bulb 31 of the lamp 30, colorless closure 10. This screen 42 is a piece of metal or of heat-resistant material emitted by the lamp in illumination. This screen can be made by molding, stamping or forging, depending on the type of material used. In addition, the screen 42 can advantageously be coated on its face. convex outer surface of a reflective aluminized layer or of a neutral, matt or metallic paint, or a layer of zinc protection.

De façon préférée, la face intérieure concave de l'écran 42 est réfléchissante, par exemple aluminée, l'écran constituant ainsi un moyen de récupération du flux lumineux émis par le filament vers l'avant, pour le renvoyer en direction du moyen de réflexion pour qu'il participe au faisceau formé, le rendement lumineux est ainsi conservé. En l'espèce, l'écran peut être hémisphérique et centré au voisinage du filament. Preferably, the concave inner face of the screen 42 is reflective, for example aluminized, the screen thus constituting a means of recovery of the luminous flux emitted by the filament towards the front, for send back to the thinking medium so that it participates in the beam formed, the light output is thus preserved. In this case, the screen can be hemispherical and centered in the vicinity of the filament.

Par ailleurs, cet écran 42 comprend des pattes de fixation minces 43,44 placées respectivement dans deux régions diamètralement opposées, par exemple au-dessus et au-dessous de la lampe 30, et venant se fixer sur le réflecteur 20 au voisinage du trou de lampe.Furthermore, this screen 42 includes thin fixing lugs 43.44 placed respectively in two diametrically opposite regions, for example above and below the lamp 30, and coming to be fixed on the reflector 20 in the vicinity of the lamp hole.

Comme on peut le voir sur la figure 2, des encoches de fixation 43',44' sont prévues sur le réflecteur 20 pour recevoir les pattes de fixation 43,44 de l'écran opaque 42.As can be seen in Figure 2, fixing notches 43 ', 44' are provided on the reflector 20 to receive the fixing lugs 43.44 of the opaque screen 42.

Avantageusement cet écran opaque présente les mêmes fonctions que le revêtement aluminé ou la peinture neutre de la figure 1 et présente de plus l'avantage de ne pas nécessiter de traitement spécial sur la lampe, qui peut être une lampe ordinaire à bulbe coloré.Advantageously, this opaque screen has the same functions as the aluminized coating or the neutral paint of figure 1 and presents plus the advantage of not requiring special treatment on the lamp, which can be an ordinary lamp with colored bulb.

Comme on peut le voir sur la figure 3, les pattes de fixation 43,44 sont suffisamment étroites pour occulter au minimum le rayonnement issu du filament. Avantageusement l'écran récupérateur opaque recouvre esssentiellement la même superficie du bulbe que le revêtement aluminé ou la peinture de la figure 1.As can be seen in Figure 3, the fixing lugs 43,44 are narrow enough to at least obscure the radiation from filament. Advantageously the opaque recuperator screen covers essentially the same area of the bulb as the aluminized coating or the painting in figure 1.

En référence aux figures 4 et 5, on a représenté une variante du mode de réalisation du feu de signalisation de la figure 2.Referring to Figures 4 and 5, a variant of the embodiment of the signaling light of FIG. 2.

Comme on peut le voir sur ces figures, le cache opaque est un écran 42 d'aspect neutre ou bien réfléchissant qui est fixé sur une partie latérale du réflecteur 20, au moyen d'une paroi 45 se prolongeant à partir d'un côté dudit écran 42, vers l'arrière et essentiellement parallèlement à l'axe optique. Cette paroi latérale 45 permet en outre de dissiper la chaleur accumulée dans l'écran sous l'effet du rayonnement de la lampe. Ce mode de réalisation est avantageusement utilisé dans des feux de signalisation de faible largeur et de volume réduit.As can be seen in these figures, the opaque cover is a screen 42 of neutral or reflective appearance which is fixed on a lateral part of the reflector 20, by means of a wall 45 extending from one side of said screen 42, towards the rear and essentially parallel to the axis optical. This side wall 45 also makes it possible to dissipate the heat accumulated in the screen under the effect of the radiation from the lamp. This mode of implementation is advantageously used in traffic lights of narrow width and reduced volume.

Comme on l'a indiqué, un feu réalisé selon la présente invention, peut être un feu clignotant avant d'aspect incolore situé au voisinage d'un projecteur à glace transparente, ou encore un feu de signalisation arrière (clignotant, feu de position, feu stop,...) placé par exemple au voisinage d'un feu de recul, ou en une position symètrique d'un feu de recul prévu du côté opposé du véhicule. As indicated, a fire produced according to the present invention, may be a colorless front flashing light located in the vicinity of a transparent window, or a rear signal light (flashing, position light, brake light, ...) placed for example in the vicinity of a reversing light, or in a symmetrical position of a reversing light provided for the opposite side of the vehicle.

Selon une autre variante de l'invention,dans le but d'atténuer encore la coloration du feu lorsqu'il est éteint, le cache peut être conçu sur sa face intérieure concave pour absorber au moins en partie le rayonnement issu du filament.According to another variant of the invention, with the aim of further attenuating the coloring of the fire when it is extinguished, the cover can be designed on its face concave interior to at least partially absorb the radiation from the filament.

Claims (5)

  1. A signal lamp for a motor vehicle, capable of emitting a coloured signalling beam of light, of the type comprising a colourless closing window (10), a reflection means such as a reflector (20), a filament lamp (30), the bulb (31) of which has a base which is narrower than its frontal region, a means for colouring the beam of light coming from the filament and an opaque cover (41 ; 42) which hides a portion of the direct ray of light coming from the filament,
    characterised in that the said colouring means is formed by the completely coloured bulb (31) of the lamp (30),
    and in that the said opaque cover (41 ; 42) has a hemispherical shape centred in the vicinity of the filament, it extends towards the frontal region of the bulb (31), it is directly visible from the outside through the said colourless window (10), and it comprises a convex outer face of neutral or highly-reflective appearance as well as a reflective concave inner face turned towards the lamp, the said opaque cover (41 ; 42) forming a means for masking at least partially the coloured bulb (31) and to give the switched-off signal lamp an essentially colourless external appearance, and also a forming a flux-recuperating means.
  2. A signal lamp according to Claim 1,
    characterised in that the said opaque cover is formed by an aluminized coating (41) formed on the said frontal region of the bulb (31).
  3. A signal lamp according to Claim 1,
    characterised in that the said opaque cover is an opaque screen (42) comprising attachment means (43 ; 44 ; 45).
  4. A signal lamp according to Claim 3,
    characterised in that the attachment means (43 ; 44) for the screen (42) comprise at least one narrow fastening lug (43 ; 44) extending from the said screen towards the reflector (20).
  5. A signal lamp according to Claim 3,
    characterised in that the opaque screen (42) is fixed to the unit by at least one lug (45) forming a thermal dissipator.
EP93400684A 1992-03-18 1993-03-17 Coloured light-emitting signal lamp for motor vehicles Expired - Lifetime EP0561701B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203223 1992-03-18
FR9203223A FR2688866B1 (en) 1992-03-18 1992-03-18 COLORED ILLUMINATION SIGNAL LIGHT FOR MOTOR VEHICLE.

Publications (2)

Publication Number Publication Date
EP0561701A1 EP0561701A1 (en) 1993-09-22
EP0561701B1 true EP0561701B1 (en) 1998-09-30

Family

ID=9427796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400684A Expired - Lifetime EP0561701B1 (en) 1992-03-18 1993-03-17 Coloured light-emitting signal lamp for motor vehicles

Country Status (4)

Country Link
EP (1) EP0561701B1 (en)
DE (1) DE69321277T2 (en)
ES (1) ES2124773T3 (en)
FR (1) FR2688866B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999049498A1 (en) * 1998-03-26 1999-09-30 Koninklijke Philips Electronics N.V. Electric lamp
DE19943886A1 (en) * 1999-09-14 2001-03-15 Guido Kellermann Direction indicators
DE102004025214A1 (en) * 2004-05-22 2005-12-15 Leonid Gaft Red-zone of motor vehicle braking light, has light filter, reflector and light shell

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942260A1 (en) * 1979-10-19 1981-04-30 Robert Bosch Gmbh, 7000 Stuttgart Turn indicator reflector and lens for car light - employs slotted mirror behind lamp glass to stop amber light showing when bulb is not lit
FR2501336B1 (en) * 1981-03-09 1986-02-28 Cibie Projecteurs LIGHT EMITTING ASSEMBLY FOR MOTOR VEHICLES
FR2526522A1 (en) * 1982-05-04 1983-11-10 Marchal Equip Auto IMPROVEMENTS IN LIGHTS FOR MOTOR VEHICLES
IT8352827V0 (en) * 1983-01-11 1983-01-11 Fiat Auto Spa COLORED LIGHT SIGNALING LIGHT FOR MOTOR VEHICLES
DD289172A5 (en) * 1988-11-29 1991-04-18 N. V. Philips' Gloeilampenfabrieken,Nl ARRANGEMENT FOR THE PROCESSING OF INFORMATION AND RECORDING RECEIVED BY THIS ARRANGEMENT

Also Published As

Publication number Publication date
ES2124773T3 (en) 1999-02-16
FR2688866A1 (en) 1993-09-24
EP0561701A1 (en) 1993-09-22
DE69321277T2 (en) 1999-03-25
FR2688866B1 (en) 1999-04-02
DE69321277D1 (en) 1998-11-05

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