EP0561701A1 - 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
EP0561701A1
EP0561701A1 EP93400684A EP93400684A EP0561701A1 EP 0561701 A1 EP0561701 A1 EP 0561701A1 EP 93400684 A EP93400684 A EP 93400684A EP 93400684 A EP93400684 A EP 93400684A EP 0561701 A1 EP0561701 A1 EP 0561701A1
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EP
European Patent Office
Prior art keywords
light
motor vehicle
lamp
screen
bulb
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Granted
Application number
EP93400684A
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German (de)
French (fr)
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EP0561701B1 (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 of colored signaling, of the type comprising a colorless closing lens, a reflection means such as a reflector, a filament lamp, a means for coloring the light radiation coming from the filament and means for at least partially masking said coloring means so as to give the extinguished signaling light an essentially colorless external appearance.
  • the coloring of the light is given by the glass or the globe for closing the light, which is appropriately tinted.
  • the amber or orange-yellow color used for the front indicators of motor vehicles is very poorly combined with the appearance of neighboring headlights and the overall appearance of the vehicle is thus degraded.
  • the current trend is to give all the exterior surfaces of the lighting devices of a vehicle, whether at the front or at the rear of the vehicle, a relatively uniform color and appearance, especially at the front of the vehicle.
  • Such a light includes a lamp, emitting white light, a reflector and a colorless closing glass.
  • This light further comprises a balloon forming a colored filter, for example of amber color for a flashing light, 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 attenuating the amber aspect of the fire when the lamp is off and it is observed from the outside.
  • the balloon is relatively large, because it must leave a space around the lamp large enough to avoid excessive heating inside of it.
  • the cover should not cover an excessive portion of the surface of the balloon, as it influences the light output which cannot be excessively reduced. For these reasons, the amber color of the extinguished fire as observed from the outside is certainly attenuated, but it remains however perceptible.
  • the present invention provides a signaling light of the type mentioned in the introduction characterized in that said coloring means is constituted by a colored bulb of the lamp and in that said masking means is constituted by an opaque cover of neutral or reflecting aspect covering a frontal region of the colored bulb of the lamp.
  • frontal region of the colored bulb of the lamp is understood here to mean the region of said bulb facing the closing glass.
  • neutral appearance means a color, possibly metallized, which when the fire is out and exposed to external radiation has a color and a brightness similar to those of the neighboring parts of the fire, in particular of its means of reflection. .
  • the only colored part of it is constituted by the lateral parts of the colored bulb of the lamp.
  • These lateral parts are small parts and located laterally with respect to the optical axis of the light.
  • the cover being of reduced dimensions, it is located more discreetly inside the light.
  • the cover consists of a hollow body of which a concave face, facing the lamp, is reflective.
  • the cover thus also forms a recuperator of the flux emitted forward by the filament, to return it to the reflection means.
  • the opaque cover of neutral appearance is constituted by an aluminized coating formed on the front region of the bulb.
  • said opaque cover is a neutral metallic paint applied to the front region of the bulb.
  • This paint can advantageously be gray in color or the like.
  • the opaque cover is a screen which is applied tightly to the front region of said colored bulb of the lamp and is fixed by fixing means for example on the reflector.
  • This screen is made of a metal or any material that can withstand the temperature generated by the lamp. It is painted or provided with a reflective coating on its outer face.
  • This signaling light capable of emitting a colored signaling light radiation, comprises a reflection means 20, a filament lamp 30 and a colorless closing glass 10 closing the light at the front.
  • the reflection means can consist of any optical device capable of returning at least part of the radiation emitted by the filament towards the rear 10.
  • it is a reflector of the parabolic type, defining a focal point F in the vicinity of the filament and an optical axis X - X '.
  • the filament lamp 30 advantageously comprises a colored bulb 31 giving the colored light radiation of the signaling light.
  • the color of the bulb is amber.
  • this colored bulb 31 includes an opaque cover 41 with a neutral or reflective appearance covering at least partially the front region of the colored bulb of the lamp, located opposite the colorless closing glass 10.
  • this cover is essentially hemispherical and preferably comprises on its convex outer surface, either a reflective aluminized coating, or a neutral metallic paint, for example of gray, mat or glossy color.
  • 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 through the glass of colorless closure 10.
  • the signaling light of FIG. 1 is extinguished, it has an essentially colorless external appearance, because the opaque cover covering the front region of the bulb at least partially masks the colored parts of it for a fairly wide range of viewing angles.
  • the light rays coming from the outside and meeting the outside surface of the cover are reflected, scattered or partly absorbed, the reflected or scattered rays keeping the same color.
  • FIGS. 2 and 3 a variant of the embodiment of the signaling light in FIG. 1 is shown.
  • This signaling light comprises an opaque cover constituted by a screen 42 of neutral or else reflecting aspect applying to the front region of the colored bulb 31 of the lamp 30, colorless closure 10.
  • This screen 42 is a piece of metal or else made of material resistant to the heat emitted by the lamp in illumination. This screen can be produced by molding, stamping or forging, depending on the type of material used.
  • the screen 42 can advantageously be coated on its convex outer face with a reflective aluminized layer or else with a neutral, matt or metallized paint, or even with a protective layer of zinc.
  • the concave inner face of the screen 42 is reflective, for example aluminized, the screen thus constituting a means of recovering the luminous flux emitted by the filament towards the front, to return it in the direction of the reflecting means. 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 comprises 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 hole of lamp.
  • fixing notches 43 ', 44' are provided on the reflector 20 to receive the fixing tabs 43, 44 of the opaque screen 42.
  • this opaque screen has the same functions as the aluminized coating or the neutral paint of FIG. 1 and also has the advantage of not requiring any special treatment on the lamp, which can be an ordinary lamp with colored bulb.
  • the fixing lugs 43,44 are sufficiently narrow to at least obscure the radiation from the filament.
  • the opaque recuperator screen essentially covers the same area of the bulb as the aluminized coating or the paint of FIG. 1.
  • FIGS. 4 and 5 a variant of the embodiment of the signaling light in FIG. 2 has been shown.
  • the opaque cover is a screen 42 of neutral or reflective appearance which is fixed to 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 optical axis.
  • 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 embodiment is advantageously used in traffic lights of small width and reduced volume.
  • a light produced according to the present invention may be a front flashing light with colorless appearance located in the vicinity of a headlamp with transparent glass, or a rear signaling 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 on the opposite side of the vehicle.
  • the cover can be designed on its concave inner face to absorb at least partly the radiation from the filament.

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

Abstract

Signal lamp for motor vehicle, capable of emitting coloured signalling light radiation, of the type comprising a colourless closure glass (10), a reflection means such as a reflector (20), a filament lamp (30), a means for colouring the light radiation coming from the filament and a means for at least partially masking the said coloration means so as to give the extinguished signal lamp an essentially colourless external appearance, the said coloration means consisting of a coloured bulb (31) of the lamp (30) and the said masking means consisting of an opaque mask (41, 42) of neutral or alternatively reflecting appearance, covering a front region of the coloured bulb (31) of the lamp (30). Application to producing a signal lamp for a motor vehicle, with a colourless appearance when it is extinguished. <IMAGE>

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 of colored signaling, of the type comprising a colorless closing lens, a reflection means such as a reflector, a filament lamp, a means for coloring the light radiation coming from the filament and means for at least partially masking said coloring means so as to give the extinguished signaling light an essentially colorless external appearance.

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 certain number of existing colored radiation signaling lights, the coloring of the light is given by the glass or the globe for closing the light, which is appropriately tinted. However, from an aesthetic point of view, it has been found that some of these colors given to the lights for closing the lights were not very harmonious with the neighboring parts of the vehicle. In particular, the amber or orange-yellow color used for the front indicators of motor vehicles is very poorly combined with the appearance of neighboring headlights and the overall appearance 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 the exterior surfaces of the lighting devices of a vehicle, whether at the front or at the rear of the vehicle, a relatively uniform color and appearance, especially at the front of the vehicle.

Ainsi, on connaît 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, the prior art is already known, in particular from French patent application No. 2,476,798 in the name of the Applicant, a traffic light which has been given, when it is extinguished, a colorless external appearance.

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 light includes a lamp, emitting white light, a reflector and a colorless closing glass. This light further comprises a balloon forming a colored filter, for example of amber color for a flashing light, 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 attenuating the amber aspect of the fire when the lamp is off and it is observed from the outside.

Cependant ce feu de signalisation présente un certain nombre d'inconvénients.However, this signal light has a number of drawbacks.

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 relatively large, because it must leave a space around the lamp large enough to avoid excessive heating inside of it. In addition, the cover should not cover an excessive portion of the surface of the balloon, as it influences the light output which cannot be excessively reduced. For these reasons, the amber color of the extinguished fire as observed from the outside is certainly attenuated, but it remains however perceptible.

Afin de pallier les différents inconvénients de la technique antérieure, la présente invention propose un feu de signalisation du type mentionné en introduction caractérisé en ce que ledit moyen de coloration est constitué par un bulbe coloré de la lampe et en ce que ledit moyen de masquage est constitué par un cache opaque d'aspect neutre ou bien réfléchissant recouvrant une région frontale du bulbe coloré de la lampe.In order to overcome the various drawbacks of the prior art, the present invention provides a signaling light of the type mentioned in the introduction characterized in that said coloring means is constituted by a colored bulb of the lamp and in that said masking means is constituted by an opaque cover of neutral or reflecting aspect covering a frontal region of the colored bulb of the lamp.

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 here to mean the region of said bulb facing the closing glass.

Par ailleurs, on entend par "aspect neutre" une couleur, éventuellement métallisée, qui présente lorsque le feu est éteint et exposé 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 metallized, which when the fire is out and exposed to external radiation has a color and a brightness similar to those of the neighboring parts of the fire, in particular of 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.Thus, 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 lateral parts are small parts and located laterally with respect to the optical axis of the light.

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 the rays which cross the lateral parts of the bulb and which emerge by 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 more discreetly inside the light.

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 of a hollow body of which a concave face, facing the lamp, is reflective. The cover thus also forms a recuperator of the flux emitted forward by the filament, to return it to the reflection means.

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 light according to the invention, the opaque cover of neutral appearance is constituted by 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 opaque cover is a neutral metallic paint applied to the front region of the bulb. This paint can advantageously be gray in color or the like.

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 front region of said colored bulb of the lamp and is fixed by fixing means for example on the reflector. This screen is made of a metal or any material that can withstand the temperature generated by the lamp. It is painted or provided with a reflective coating on its outer face.

La description qui va suivre en regard des dessins annexés donnes 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 in 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 headlamp, the concepts of the invention can also be used for rear signaling lights.

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 signal light according to the present invention. This signaling light capable of emitting a colored signaling light radiation, comprises a reflection means 20, a filament lamp 30 and a colorless closing glass 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 capable of returning at least part of the radiation emitted by the filament towards the rear 10. In this case it is a reflector of the parabolic type, defining a focal point F in the vicinity of the filament and an 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 light radiation of the signaling light. In this case, 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 with a neutral or reflective appearance covering at least partially the front region of the colored bulb of the lamp, located opposite the colorless closing glass 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 the present example, this cover is essentially hemispherical and preferably comprises on its convex outer surface, either a reflective aluminized coating, or a neutral metallic paint, for example of gray, mat or glossy 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 light of FIG. 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 through the glass of colorless closure 10. On the other hand when the signaling light of FIG. 1 is extinguished, it has an essentially colorless external appearance, because the opaque cover covering the front region of the bulb at least partially masks the colored parts of it 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 diffuse external lighting, such as daylight, or even plunging concentrated lighting, the proportion of light rays which are likely to pass through the colored bulb and emerge from the fire in an upward direction the eyes of the observer, is very small.

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.Furthermore, the light rays coming from the outside and meeting the outside surface of the cover are reflected, scattered or partly 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.With reference to FIGS. 2 and 3, a variant of the embodiment of the signaling light in FIG. 1 is shown.

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 signaling light comprises an opaque cover constituted by a screen 42 of neutral or else reflecting aspect applying to the front region of the colored bulb 31 of the lamp 30, colorless closure 10. This screen 42 is a piece of metal or else made of material resistant to the heat emitted by the lamp in illumination. This screen can be produced by molding, stamping or forging, depending on the type of material used. In addition, the screen 42 can advantageously be coated on its convex outer face with a reflective aluminized layer or else with a neutral, matt or metallized paint, or even with a protective layer of zinc.

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 recovering the luminous flux emitted by the filament towards the front, to return it in the direction of the reflecting means. 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 comprises 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 hole of lamp.

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 FIG. 2, fixing notches 43 ', 44' are provided on the reflector 20 to receive the fixing tabs 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 FIG. 1 and also has the advantage of not requiring any 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 sufficiently narrow to at least obscure the radiation from the filament. Advantageously, the opaque recuperator screen essentially covers the same area of the bulb as the aluminized coating or the paint of FIG. 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.With reference to FIGS. 4 and 5, a variant of the embodiment of the signaling light in FIG. 2 has been shown.

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 to 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 optical axis. 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 embodiment is advantageously used in traffic lights of small 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 light produced according to the present invention may be a front flashing light with colorless appearance located in the vicinity of a headlamp with transparent glass, or a rear signaling 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 on 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 concave inner face to absorb at least partly the radiation from the filament.

Claims (9)

Feu de signalisation pour véhicule automobile, susceptible d'émettre un rayonnement lumineux de signalisation coloré, du type comprenant une glace de fermeture incolore (10), un moyen de réflexion tel qu'un réflecteur (20), une lampe à filament (30), 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, caractérisé en ce que ledit moyen de coloration est constitué par un bulbe coloré (31) de la lampe (30) et en ce que ledit moyen de masquage est constitué par un cache opaque (41,42) d'aspect neutre ou bien réfléchissant recouvrant une région frontale du bulbe coloré (31) de la lampe (30).Signaling light for a motor vehicle, capable of emitting light colored signaling radiation, of the type comprising a colorless closing lens (10), a reflecting means such as a reflector (20), a filament lamp (30) , a means for coloring the light radiation coming from the filament and a means for at least partially masking said coloring means so as to give the extinguished signaling light an essentially colorless external appearance, characterized in that said coloring means consists of a colored bulb (31) of the lamp (30) and in that said masking means consists of an opaque cover (41,42) of neutral or reflective appearance covering a front region of the colored bulb (31) of the lamp (30). Feu de signalisation pour véhicule automobile selon la revendication 1, caractérisé en ce que ledit cache opaque est constitué par un revêtement aluminé (41) formé sur ladite région frontale du bulbe.Signaling light for a motor vehicle according to claim 1, characterized in that said opaque cover is constituted by an aluminized coating (41) formed on said front region of the bulb. Feu de signalisation pour véhicule automobile selon la revendication 1, caractérisé en ce que ledit cache opaque est constitué par une peinture appliquée sur ladite région frontale du bulbe..Signaling light for a motor vehicle according to claim 1, characterized in that said opaque cover is constituted by a paint applied to said front region of the bulb. Feu de signalisation pour véhicule automobile selon la revendication 1, caractérisé en ce que ledit cache opaque est un écran opaque (42) appliqué étroitement sur la région frontale du bulbe (31) et comportant des moyens de fixation (43,44,45).Signaling light for a motor vehicle according to claim 1, characterized in that said opaque cover is an opaque screen (42) applied tightly on the front region of the bulb (31) and comprising fixing means (43,44,45). Feu de signalisation pour véhicule automobile selon la revendication 4, caractérisé en ce que ledit cache (42) est réfléchissant sur une face extérieure convexe.Signaling light for a motor vehicle according to claim 4, characterized in that said cover (42) is reflective on a convex outer face. Feu de signalisation pour véhicule automobile selon la revendication 4 ou 5, caractérisé en ce que l'écran est réfléchissant sur une face intérieure concave, tournée vers la lampe, de manière à former également un moyen récupérateur de flux.Signaling light for a motor vehicle according to claim 4 or 5, characterized in that the screen is reflective on a concave inner face, facing the lamp, so as to also form a flux recovery means. Feu de signalisation pour véhicule automobile selon la revendication 6, caractérisé en ce que l'écran (42) est de forme essentiellement hémisphérique et centré au voisinage du filament.Signaling light for a motor vehicle according to claim 6, characterized in that the screen (42) is essentially hemispherical in shape and centered in the vicinity of the filament. Feu de signalisation pour véhicule automobile selon l'une des revendications 4 à 7, caractérisé en ce que les moyens de fixation (43,44) de l'écran (42) comprennent au moins une patte étroite de fixation (43,44) s'étendant à partir dudit écran vers le réflecteur (20).Signaling light for a motor vehicle according to one of claims 4 to 7, characterized in that the fixing means (43,44) of the screen (42) comprise at least one narrow fixing tab (43,44) s extending from said screen to the reflector (20). Feu de signalisation pour véhicule automobile selon l'une des revendications 4 à 7, caractérisé en ce que l'écran opaque (42) est fixé sur le feu par au moins une patte (45) formant dissipateur thermique.Signaling light for a motor vehicle according to one of claims 4 to 7, characterized in that the opaque screen (42) is fixed to the light by at least one tab (45) forming a heat sink.
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.

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

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EP93400684A Expired - Lifetime EP0561701B1 (en) 1992-03-18 1993-03-17 Coloured light-emitting signal lamp for motor vehicles

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

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WO1999049498A1 (en) * 1998-03-26 1999-09-30 Koninklijke Philips Electronics N.V. Electric lamp

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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

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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
GB2094463A (en) * 1981-03-09 1982-09-15 Cibie Projecteurs Signalling light
FR2526522A1 (en) * 1982-05-04 1983-11-10 Marchal Equip Auto IMPROVEMENTS IN LIGHTS FOR MOTOR VEHICLES
DE3400269A1 (en) * 1983-01-11 1984-07-19 Fiat Auto S.P.A., Turin/Torino Signalling light for motor vehicles for emitting coloured light
EP0371553A1 (en) * 1988-11-29 1990-06-06 Koninklijke Philips Electronics N.V. Coloured electric lamp

Patent Citations (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
GB2094463A (en) * 1981-03-09 1982-09-15 Cibie Projecteurs Signalling light
FR2526522A1 (en) * 1982-05-04 1983-11-10 Marchal Equip Auto IMPROVEMENTS IN LIGHTS FOR MOTOR VEHICLES
DE3400269A1 (en) * 1983-01-11 1984-07-19 Fiat Auto S.P.A., Turin/Torino Signalling light for motor vehicles for emitting coloured light
EP0371553A1 (en) * 1988-11-29 1990-06-06 Koninklijke Philips Electronics N.V. Coloured electric lamp

Cited By (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
US6270237B1 (en) 1998-03-26 2001-08-07 U.S. Philips Corporation Electric lamp with an anti-reflecting layer
CN1296966C (en) * 1998-03-26 2007-01-24 皇家菲利浦电子有限公司 Electric lamp

Also Published As

Publication number Publication date
DE69321277D1 (en) 1998-11-05
FR2688866B1 (en) 1999-04-02
ES2124773T3 (en) 1999-02-16
DE69321277T2 (en) 1999-03-25
EP0561701B1 (en) 1998-09-30
FR2688866A1 (en) 1993-09-24

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