EP0230834A1 - Signalling lamps with coloured lighting for a motor vehicle - Google Patents

Signalling lamps with coloured lighting for a motor vehicle Download PDF

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Publication number
EP0230834A1
EP0230834A1 EP86402901A EP86402901A EP0230834A1 EP 0230834 A1 EP0230834 A1 EP 0230834A1 EP 86402901 A EP86402901 A EP 86402901A EP 86402901 A EP86402901 A EP 86402901A EP 0230834 A1 EP0230834 A1 EP 0230834A1
Authority
EP
European Patent Office
Prior art keywords
reflector
filter
signaling
light according
mirror
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.)
Granted
Application number
EP86402901A
Other languages
German (de)
French (fr)
Other versions
EP0230834B1 (en
Inventor
Gilbert Dilouya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Cibie Projecteurs SA
Valeo Vision SAS
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Publication of EP0230834A1 publication Critical patent/EP0230834A1/en
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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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • 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
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors

Definitions

  • the present invention relates generally to signaling lights of motor vehicles, and more particularly relates to a signaling light intended to emit colored light radiation.
  • the coloring of the light is given by the glass or the globe for closing the light, which is appropriately tinted.
  • FIG. 1 An example of such a light is shown diagrammatically in FIG. 1, in horizontal section passing through the optical axis. It includes a lamp 10, emitting white light, a reflector 12 and a closing glass 14.
  • a balloon 16 or even a plate, or any other suitable element, forming a filter colored, for example amber for a flashing light, is interposed between the lamp and the reflector.
  • the balloon is partially masked on its outer surface by a cover 18 which is substantially impermeable to light from the outside to the inside, and substantially permeable in the opposite direction.
  • the cover 18, which can also be reflective towards the outside, contributes to attenuating the amber aspect of the fire when the lamp is off and when it is observed from the outside.
  • the filtering balloon must leave a space around the lamp large enough to avoid excessive heating inside it. Its size is therefore relatively large.
  • the cover must not cover an excessive proportion of the surface of the ball, as it influences the light output of the fire, 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 clearly perceptible.
  • the present invention aims to propose a light signaling light for a self-propelled vehicle, such as a direction indicator flashing light, the general appearance of which is colorless when the light is off, with of course the suitably colored light function in the on state.
  • the present invention relates to a signaling light for a vehicle, such as a motor vehicle, capable of emitting a signaling light radiation colotated through a colorless closing glass, characterized in that it comprises a reflector of parabolic type having a focus, a window in the reflector in the bottom region thereof, a color filter disposed in the window, means for emitting a concentrated beam of white light passing through the filter and directed towards the focus region of the reflector, and a mirror arranged in this region to return the rays of said beam, colored by the filter, to the whole of the reflector, the latter emitting said colored signaling radiation through the closing glass.
  • the general direction of the beam is aligned with the optical axis of the reflector.
  • the means for emitting a concentrated beam of white light comprises a filament lamp and a second reflector.
  • the filter placed in the window of the reflector, which is small and located substantially behind the mirror in relation to the observer. Only a very small proportion of the rays coming from the outside meets this filter, and the general appearance of the fire is therefore perfectly colorless.
  • the signaling light comprises a light source 20, such as a tungsten filament lamp, capable of emitting white light.
  • the lamp base is mounted in a socket 22 secured to a first reflector 24 of optical axis X-X.
  • the reflector 24 is in the present example elliptical, and therefore comprises two focal points. Its first focal point F1 is substantially coincident with the filament of the lamp, and its second focal point is located further forward (to the right in FIG. 2) on the optical axis X-X.
  • the light comprises a second reflector constituted by two concentric parts 24 ⁇ and 26, forming together a reflector, for example parabolic hearth F ⁇ and having the same optical axis XX as the reflector 24.
  • the parts 24 ⁇ and 26 are arranged so that their common focus F ⁇ is located in the vicinity of the second focus F2 of the first reflector 24. In the present example, the focus F ⁇ is located slightly in front of the focal point F2.
  • the elliptical reflector 24 and the outer part 24 ⁇ of the parabolic reflector are integral and formed in one piece, the inner end edge of the part 24 ⁇ here being connected by a cylindrical section 24 ⁇ to the elliptical reflector 24.
  • the second part 26 of the parabolic reflector arranged centrally, is attached to the first 24 ⁇ by any suitable fixing means, for example by gluing the outer peripheral edge of the central part 26 to the adjacent inner edge of the part 24 ⁇ device.
  • the second reflector 24 ⁇ , 26 can also be produced in a single part, which will be attached by any suitable means to the free end of the intermediate cylindrical part 24 ⁇ .
  • a cup or cup-shaped element 28, forming a mirror on its outer surface, is placed in the region of the two foci F2 and F ⁇ , It consists in the present example in a hemispherical mirror centered on the optical axis XX of the light and arranged so as to pass approximately through the focal point F ⁇ of the parabolic reflector 24 ⁇ -26.
  • the element 28 can be held in this position using one or more arms (not shown), preferably in one transparent plastic, extending for example from the region of the outer edge of the 24 ⁇ part of the parabolic reflector.
  • the signaling light further comprises a coloring filter 30 which is received in a window (not referenced) formed in the wall of the central part 26 of the parabolic reflector in the region of the bottom thereof.
  • the filter 30 is produced in the present example from a tinted plastic material of amber color or the like, and extends between the mirror 28 and the lamp 20. Its center is located on the optical axis X-X. We can also observe that the diameter of the filter 30 is substantially equal to that of the mirror 28. We have shown in the figure a filter 30 whose shape matches that of the parabola 26. It is understood that a flat filter can also give satisfaction.
  • the central part 26 of the parabolic reflector and the filter 30 can be produced in the following manner: the body of this central part 26 is made of transparent colored plastic (amber in the present example) ), and the entire surface of said body, with the exception of its circular central region, which will thus define the filter 30, will be made reflective, for example by a vacuum metallization step or the like.
  • the signaling light comprises a closing globe or glass 32 comprising, for example on its inner surface, streaks or balls 34 for scattering and / or dispersing light.
  • the closing glass 32 is colorless, and made for example of plastic.
  • the above traffic light behaves as follows.
  • the lamp 20 When the lamp 20 is on, it creates in combination with the elliptical reflector 24 a concentrated beam of white light which converges towards the second focus F2 of said reflector.
  • this beam is intercepted by the colored filter 30, and therefore arrives in the interior space of the parabolic reflector 24 ⁇ -26 having taken on an amber, or yellow-orange color, as required by certain regulations for the fire function. turn signal.
  • the arrangement of the mirror 28 is such that it also intercepts the converging beam slightly downstream from its point of convergence F2, as indicated by the straight lines 36 which schematize various ray paths of the beam. These rays are reflected by the mirror while being distributed over the entire extent of the parabolic reflector 26.
  • the mutual arrangement of the focal points F2 and F ⁇ and of the mirror 28, as well as the diameter of the latter, are chosen so that all the rays reflected by the mirror seem to emanate approximately from the focal point F ⁇ of the parabola 24 ⁇ -26.
  • the lamp 20, the elliptical reflector 24, the patch or filtering area 30 and the mirror 28 contribute in combination to create, in the region of the focus F ⁇ of the parabolic reflector 24 ⁇ -26, a virtual source of light colorful.
  • the fire therefore behaves in a manner completely analogous to a fire comprising a source of colored light and a parabolic reflector, the focus of which is located in the vicinity of the source, to create a colored beam suitable in the present example for direction indicator or distress signaling light function.
  • the only colored part of the latter namely the pellet or filtering zone 30, is largely masked by the mirror 28, of colorless appearance.
  • the dispersing elements 34 provided on the inner surface of the closing glass 32 have the effect of "diluting" the very small proportion of amble light reflected by the fire in the predominant white light which comes out after reflection.
  • the quality of the result obtained is due to the fact that, in contrast to the solutions of the prior art, the filtering element giving the coloring is carried outside the volume defined by the parabola 24 ⁇ -26 and the glass closing 32.
  • its interior surface, facing the closing glass can also be made to be reflective.
  • the fire described above with reference to FIG. 2 is only an example of a reaction. reading among others.
  • the means for creating the concentrated beam of white light directed towards the filter 30 may alternatively be constituted by a light source in combination with a reflector and / or a lens of any shape. In this regard, tests have shown that, even when the concentrated beam passing through the filter 30 is not specifically convergent, the quality of the result obtained remains satisfactory.
  • the filter 30, in most circular cases, will be given the smallest possible diameter, and preferably equal to the diameter of the beam at this location.
  • the mirror 28 may more generally consist of any part of revolution, such as a cone, a paraboloid, etc., made reflective and capable of distributing the colored beam which it receives towards the parabolic reflector.
  • the geometric arrangement of the various elements, and in particular the relationship between the mirror 28, its center, and the foci F ⁇ and F2 may be entirely arbitrary, provided that, by empirical tests or by calculation , we obtain both a colored beam of correct intensity and distribution at the exit of the fire, and a reasonably little colored appearance, when the fire is extinguished, in external observation.
  • the point of convergence F2 of the converging beam may be located both in front of and behind the adjacent surface of the mirror 28.
  • a traffic light has been described above, the amber coloration of the beam of which corresponds to the flashing light function. It is understood that the beam can be given, by means of the filter 30, any suitable coloring, for example red to fulfill the functions of stop light and / or position light.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention relates to a signalling lamp for a vehicle, such as a motor vehicle, capable of emitting coloured, luminous signalling radiation through a colourless covering glass (32). According to the invention, the lamp comprises a reflector of the parabolic type (24'', 26) having a focal point (F'), an aperture formed in the reflector in the region of its base, a coloured filter (30) arranged in the aperture, means (20, 24) for emitting a concentrated beam of white light traversing the filter and directed towards the region of the focal point of the reflector, and a mirror (28) arranged in this region for returning the rays of the said beam, which are coloured by the filter, to the reflector assembly, the latter emitting the said coloured signalling radiation through the covering glass. In this way, a virtual coloured source is created at the focal point of the parabolic reflector, and the lamp appears perfectly colourless when extinguished. <IMAGE>

Description

La présente invention concerne d'une façon générale les feux de signalisation de véhicules au­tomobiles, et concerne plus particulièrement un feu de signalisation destiné à émettre un rayonnement lu­mineux coloré.The present invention relates generally to signaling lights of motor vehicles, and more particularly relates to a signaling light intended to emit colored light radiation.

Dans la plupart des 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 teinté de façon appropriée.In most of the 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.

Cependant, sur un plan purement esthétique, l'on a constaté que certaines de ces teintes données aux glaces de fermeture des feux s'assemblaient de façon peu harmonieuse avec certaines autres couleurs données à la carrosserie du véhicule. En particulier, la couleur jaune-orangée, ou ambre, utilisée pour les clignotants des véhicules automobiles (cette couleur spécifique étant imposée dans certains pays par des règlements) se marie fort mal avec un certain nombre d'autres teintes. L'esthétique globale du véhi­cule est ainsi dégradée.However, from a purely aesthetic point of view, it has been observed that some of these colors given to the glass for closing the lights were not very harmonious with certain other colors given to the body of the vehicle. In particular, the yellow-orange, or amber, color used for the indicators of motor vehicles (this specific color being imposed in certain countries by regulations) goes very poorly with a certain number of other colors. The overall aesthetics of the vehicle is thus degraded.

Par ailleurs, il existe aujourd'hui une ten­dance à donner à l'ensemble des surfaces extérieures des dispositifs d'éclairage d'un véhicule automobile, que ce soit à l'avant ou à l'arrière du véhicule, une couleur et un aspect relativement uniformes.Furthermore, there is today a tendency to give all the exterior surfaces of the lighting devices of a motor vehicle, whether at the front or at the rear of the vehicle, a color and an appearance. relatively uniform.

En particulier, le fait de disposer côte à côte un projecteur à glace de fermeture transparente et donc d'aspect général blanc, avec un feu cligno­tant d'aspect général ambré est de moins en moins souhaitable sur le plan esthétique.In particular, the fact of having side by side a transparent closing glass projector and therefore of generally white appearance, with a flashing light of generally amber appearance is less and less desirable from the aesthetic point of view.

On connaît déjà dans la technique, notamment par la demande de brevet français No. 80 04054 au nom de la Demanderesse, des feux de signalisation de véhi­ cules auxquels on a tenté de donner, lorsqu'ils sont éteints, un aspect extérieur incolore. Un exemple d'un tel feu est représenté schématiquement sur la figure 1, en coupe horizontale passant par l'axe optique. Il comprend une lampe 10, émettant une lu­mière blanche, un réflecteur 12 et une glace de fer­meture 14. Dans ce feu de signalisation de l'art an­térieur, un ballon 16 (ou encore une plaque, ou tout autre élément approprié), formant filtre coloré, par exemple de couleur ambre pour un feu clignotant, est interposé entre la lampe et le réflecteur. Le ballon est partiellement masqué à sa surface extérieure par un cache 18 qui est sensiblement imperméable à la lumière de l'extérieur vers l'intérieur, et sensible­ment perméable dans le sens inverse. Le cache 18, qui peut en outre être réfléchissant vers l'extérieur, contribue à atténuer l'aspect ambre du feu lorsque la lampe est éteinte et qu'il est observé de l'ex­térieur.Already known in the art, in particular by French patent application No. 80 04054 in the name of the Applicant, vehicle traffic lights cules to which we have tried to give, when they are extinct, a colorless external appearance. An example of such a light is shown diagrammatically in FIG. 1, in horizontal section passing through the optical axis. It includes a lamp 10, emitting white light, a reflector 12 and a closing glass 14. In this signaling light of the prior art, a balloon 16 (or even a plate, or any other suitable element), forming a filter colored, for example amber for a flashing light, is interposed between the lamp and the reflector. The balloon is partially masked on its outer surface by a cover 18 which is substantially impermeable to light from the outside to the inside, and substantially permeable in the opposite direction. The cover 18, which can also be reflective towards the outside, contributes to attenuating the amber aspect of the fire when the lamp is off and when it is observed from the outside.

Un tel feu présente cependant plusieurs incon­vénients. D'une part, le ballon filtrant doit laisser autour de la lampe un espace suffisamment grand pour éviter un échauffement excessif à l'intérieur de celui-ci. Sa dimension est donc relativement impor­tante. En outre, il ne faut pas que le cache recouvre une proportion excessive de la surface du ballon, car il influe sur le rendement lumineux de feu, qui ne peut pas être excessivement réduit. Pour ces raisons, la coloration ambre du feu éteint tel qu'observé de l'extérieur est certes atténuée, mais elle reste ce­pendant nettement perceptible.However, such a fire has several drawbacks. On the one hand, the filtering balloon must leave a space around the lamp large enough to avoid excessive heating inside it. Its size is therefore relatively large. In addition, the cover must not cover an excessive proportion of the surface of the ball, as it influences the light output of the fire, 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 clearly perceptible.

La présente invention vise à proposer un feu de signalisation lumineuse de véhicule autombile, tel qu'un feu clignotant indicateur de direction, dont l'aspect général soit incolore lorsque le feu est éteint, avec bien entendu la fonction lumineuse convenablement colorée à l'état allumé.The present invention aims to propose a light signaling light for a self-propelled vehicle, such as a direction indicator flashing light, the general appearance of which is colorless when the light is off, with of course the suitably colored light function in the on state.

A cet effet, la présente invention concerne un feu de signalisation pour véhicule, tel qu'un véhicule automobile, susceptible d'émettre un rayon­nement lumineux de signalisation coloté à travers une glace de fermeture incolore, caractérisé en ce qu'il comprend un réflecteur de genre parabolique ayant un foyer, une fenêtre ménagée dans le réflec­teur dans la région du fond de celui-ci, un filtre coloré disposé dans la fenêtre, des moyens pour émettre un faisceau concentré de lumière blanche traversant le filtre et dirigé vers la région du foyer du réflecteur, et un miroir disposé dans cette région pour renvoyer les rayons dudit faisceau, colorés par le filtre, vers l'ensemble du réflecteur, ce dernier émettant à travers la glace de fermeture ledit rayon­nement de signalisation coloré.To this end, the present invention relates to a signaling light for a vehicle, such as a motor vehicle, capable of emitting a signaling light radiation colotated through a colorless closing glass, characterized in that it comprises a reflector of parabolic type having a focus, a window in the reflector in the bottom region thereof, a color filter disposed in the window, means for emitting a concentrated beam of white light passing through the filter and directed towards the focus region of the reflector, and a mirror arranged in this region to return the rays of said beam, colored by the filter, to the whole of the reflector, the latter emitting said colored signaling radiation through the closing glass.

De façon préférée, la direction générale du faisceau est alignée avec l'axe optique du réflec­teur.Preferably, the general direction of the beam is aligned with the optical axis of the reflector.

Dans un mode de réalisation de l'invention, les moyens pour émettre un faisceau concentré de lumière blanche comprennent une lampe à filament et un second réflecteur.In one embodiment of the invention, the means for emitting a concentrated beam of white light comprises a filament lamp and a second reflector.

Ainsi, lorsque le feu est éteint, la seule partie colorée de celui-ci est constituée par le filtre disposé dans la fenêtre du réflecteur, qui est de faibles dimensions et situé sensiblement derrière le miroir par rapport à l'observateur. Seule une très faible proportion des rayons venant de l'extérieur rencontre ce filtre, et l'aspect général du feu est donc parfaitement incolore.Thus, when the fire is out, the only colored part of it is formed by the filter placed in the window of the reflector, which is small and located substantially behind the mirror in relation to the observer. Only a very small proportion of the rays coming from the outside meets this filter, and the general appearance of the fire is therefore perfectly colorless.

L'invention sera mieux comprise à la lecture de la description détaillée suivante d'un mode de réalisation préféré de celle-ci, donnée à titre d'exemple et faire en référence au dessins annexé, sur lequel :

  • - la figure 1 est une vue en coupe horizon­tale schématique d'un feu de signalisation à éclai­rement coloré et d'aspect incolore selon la technique antérieure ; et
  • - la figure 2 est une vue en coupe horizontale partielle, passant par l'axe optique, d'un feu de signalisation selon la présente invention.
The invention will be better understood on reading the following detailed description of a preferred embodiment thereof, given by way of example and with reference to the appended drawings, in which:
  • - Figure 1 is a schematic horizontal sectional view of a traffic light with colored illumination and colorless appearance according to the prior art; and
  • - Figure 2 is a partial horizontal sectional view, passing through the optical axis, of a signaling light according to the present invention.

Le feu représenté sur la figure 1 a été décrit plus haut au cours de la discussion de l'art antérieur.The fire shown in Figure 1 has been described above during the discussion of the prior art.

En référence à la figure 2, le feu de signa­lisation selon la présente invention comprend une source lumineuse 20, telle qu'une lampe à filament de tungstène, apte à émettre une lumière blanche. Le culot de la lampe est monté dans une douille 22 soli­daire d'un premier réflecteur 24 d'axe optique X-X. Le réflecteur 24 est dans le présent exemple ellip­tique, et comporte donc deux foyers. Son premier foyer F1 est sensiblement confondu avec le filament de la lampe, et son second foyer est situé plus en avant (vers la droite sur la figure 2) sur l'axe optique X-X.Referring to Figure 2, the signaling light according to the present invention comprises a light source 20, such as a tungsten filament lamp, capable of emitting white light. The lamp base is mounted in a socket 22 secured to a first reflector 24 of optical axis X-X. The reflector 24 is in the present example elliptical, and therefore comprises two focal points. Its first focal point F1 is substantially coincident with the filament of the lamp, and its second focal point is located further forward (to the right in FIG. 2) on the optical axis X-X.

Le feu comprend un second réflecteur constitué par deux parties concentriques 24ʺ et 26, formant en­semble un réflecteur par exemple parabolique de foyer Fʹ et ayant le même axe optique X-X que le réflec­teur 24. Les parties 24ʺ et 26 sont disposées de ma­nière à ce que leur foyer commun Fʹ soit situé au voisinage du second foyer F2 du premier réflecteur 24. Dans le présent exemple, le foyer Fʹ est situé légèrement en avant du foyer F2.The light comprises a second reflector constituted by two concentric parts 24ʺ and 26, forming together a reflector, for example parabolic hearth Fʹ and having the same optical axis XX as the reflector 24. The parts 24ʺ and 26 are arranged so that their common focus Fʹ is located in the vicinity of the second focus F2 of the first reflector 24. In the present example, the focus Fʹ is located slightly in front of the focal point F2.

Comme on peut l'observer sur la figure 2, le réflecteur elliptique 24 et la partie extérieure 24ʺ du réflecteur parabolique sont solidaires et formés d'une pièce, le bord d'extrémité intérieur de la partie 24ʺ étant ici raccordé par un tronçon cylindrique 24ʹ au réflecteur elliptique 24. La se­conde partie 26 du réflecteur parabolique, disposée centralement, est rapportée sur la première 24ʺ par tout moyen de fixation appropriée, par exemple par collage du bord périphérique extérieur de la partie centrale 26 sur le bord intérieur adjacent de la partie périphérique 24ʺ.As can be seen in Figure 2, the elliptical reflector 24 and the outer part 24ʺ of the parabolic reflector are integral and formed in one piece, the inner end edge of the part 24ʺ here being connected by a cylindrical section 24ʹ to the elliptical reflector 24. The second part 26 of the parabolic reflector, arranged centrally, is attached to the first 24ʺ by any suitable fixing means, for example by gluing the outer peripheral edge of the central part 26 to the adjacent inner edge of the part 24ʺ device.

Bien entendu, on pourra également réaliser le second réflecteur 24ʺ, 26 en une seule partie, qui sera rapportée par tout moyen approprié sur l'ex­trémité libre de la partie cylindrique intermédiaire 24ʹ.Of course, the second reflector 24ʺ, 26 can also be produced in a single part, which will be attached by any suitable means to the free end of the intermediate cylindrical part 24ʹ.

Un élément en forme de coupelle ou de cuvette 28, formant miroir à sa surface extérieure, est placé dans la région des deux foyers F2 et Fʹ, Il consiste dans le présent exemple en un miroir hémisphérique centré sur l'axe optique X-X du feu et disposé de manière à passer approximativement par le foyer Fʹ du réflecteur parabolique 24ʺ-26. L'élément 28 pourra être maintenu dans cette position à l'aide d'un ou plusieurs bras (non représentés), de préférence en une matière plastique transparente, s'étendant par exemple depuis la région du bord extérieur de la partie 24ʺ du réflecteur parabolique.A cup or cup-shaped element 28, forming a mirror on its outer surface, is placed in the region of the two foci F2 and Fʹ, It consists in the present example in a hemispherical mirror centered on the optical axis XX of the light and arranged so as to pass approximately through the focal point Fʹ of the parabolic reflector 24ʺ-26. The element 28 can be held in this position using one or more arms (not shown), preferably in one transparent plastic, extending for example from the region of the outer edge of the 24ʺ part of the parabolic reflector.

Dans le présent mode de réalisation, le feu de signalisation comporte en outre un filtre colorant 30 qui est reçu dans une fenêtre (non référencée) formée dans la paroi de la partie centrale 26 du réflecteur parabolique dans la région du fond de celui-ci. Le filtre 30 est réalisé dans le présent exemple en une matière plastique teintée de couleur ambre ou analogue, et s'étend entre le miroir 28 et la lampe 20. Son centre est situé sur l'axe op­tique X-X. On peut observer également que le diamètre du filtre 30 est sensiblement égal à celui du miroir 28. On a représenté sur la figure un filtre 30 dont la forme épouse celle de la parabole 26. Il est bien entendu qu'un filtre plat pourra également donner satisfaction.In the present embodiment, the signaling light further comprises a coloring filter 30 which is received in a window (not referenced) formed in the wall of the central part 26 of the parabolic reflector in the region of the bottom thereof. The filter 30 is produced in the present example from a tinted plastic material of amber color or the like, and extends between the mirror 28 and the lamp 20. Its center is located on the optical axis X-X. We can also observe that the diameter of the filter 30 is substantially equal to that of the mirror 28. We have shown in the figure a filter 30 whose shape matches that of the parabola 26. It is understood that a flat filter can also give satisfaction.

Par ailleurs, dans une variante de réalisa­tion particulièrement avantageuse, la partie centrale 26 du réflecteur parabolique et le filtre 30 pourront être réalisés de la manière suivante : on réalisera le corps de cette partie centrale 26 en matière plas­tique transparente colorée (ambre dans le présent exemple), et on rendra réfléchissante, par exemple par un étape de métallisation sous vide ou analogue, toute la surface dudit corps à l'exception de sa région centrale circulaire, qui définira ainsi le filtre 30.Furthermore, in a particularly advantageous embodiment, the central part 26 of the parabolic reflector and the filter 30 can be produced in the following manner: the body of this central part 26 is made of transparent colored plastic (amber in the present example) ), and the entire surface of said body, with the exception of its circular central region, which will thus define the filter 30, will be made reflective, for example by a vacuum metallization step or the like.

Enfin, le feu de signalisation comprend un globe ou glace de fermeture 32 comportant par exemple à sa surface intérieure des stries ou billes 34 de diffusion et/ou dispersion de la lumière. Bien que l'on ait représenté ici un élément de fermeture pour feu en retour d'aile, il est clair que cela ne constitue qu'une forme d'exécution possible parmi d'autres.Finally, the signaling light comprises a closing globe or glass 32 comprising, for example on its inner surface, streaks or balls 34 for scattering and / or dispersing light. Although we have shown here a closure element for fire in return wing, it is clear that this is only one possible form of execution among others.

La glace de fermeture 32 est incolore, et réalisée par exemple en matière plastique.The closing glass 32 is colorless, and made for example of plastic.

Le feu de signalisation ci-dessus se comporte de la manière suivante. Lorsque la lampe 20 est allumée, elle créé en combinaison avec le réflecteur elliptique 24 un faisceau concentré de lumière blan­che qui converge vers le second foyer F2 dudit ré­flecteur. Cependant, ce faisceau est intercepté par le filtre coloré 30, et arrive donc dans l'espace intérieur du réflecteur parabolique 24ʺ-26 en ayant pris une couleur ambre, ou jaune-orangée, telle qu'exigée par certaines règlementations pour la fonction de feu clignotant.The above traffic light behaves as follows. When the lamp 20 is on, it creates in combination with the elliptical reflector 24 a concentrated beam of white light which converges towards the second focus F2 of said reflector. However, this beam is intercepted by the colored filter 30, and therefore arrives in the interior space of the parabolic reflector 24ʺ-26 having taken on an amber, or yellow-orange color, as required by certain regulations for the fire function. turn signal.

La disposition du miroir 28 est telle qu'il intercepte également le faisceau convergent légère­ment en aval de son point de convergence F2, comme indiqué par les lignes droites 36 qui schématisent divers trajets de rayons du faisceau. Ces rayons sont réfléchis par le miroir en étant répartis sur toute l'étendue du réflecteur parabolique 26. Or, la disposition mutuelle des foyers F2 et Fʹ et du miroir 28, ainsi que le diamètre de ce dernier, sont choisis de manière à ce que tous les rayons réfléchis par le miroir semblent émaner approxima­tivement du foyer Fʹ de la parabole 24ʺ-26. Ainsi, l'on comprend que la lampe 20, le réflecteur ellip­tique 24, la pastille ou zone filtrante 30 et le miroir 28 contribuent en combinaison à créer, dans la région du foyer Fʹ du réflecteur parabolique 24ʺ-26, une source virtuelle de lumière colorée. Le feu se comporte par conséquent d'une manière tout à fait analogue à un feu comprenant une source de lu­mière colorée et un réflecteur parabolique dont le foyer est situé au voisinage de la source, pour créer un faisceau coloré convenant dans le présent exemple à la fonction de feu clignotant d'indication de changement de direction ou de détresse.The arrangement of the mirror 28 is such that it also intercepts the converging beam slightly downstream from its point of convergence F2, as indicated by the straight lines 36 which schematize various ray paths of the beam. These rays are reflected by the mirror while being distributed over the entire extent of the parabolic reflector 26. However, the mutual arrangement of the focal points F2 and Fʹ and of the mirror 28, as well as the diameter of the latter, are chosen so that all the rays reflected by the mirror seem to emanate approximately from the focal point Fʹ of the parabola 24ʺ-26. Thus, it is understood that the lamp 20, the elliptical reflector 24, the patch or filtering area 30 and the mirror 28 contribute in combination to create, in the region of the focus Fʹ of the parabolic reflector 24ʺ-26, a virtual source of light colorful. The fire therefore behaves in a manner completely analogous to a fire comprising a source of colored light and a parabolic reflector, the focus of which is located in the vicinity of the source, to create a colored beam suitable in the present example for direction indicator or distress signaling light function.

Lorsque la lampe 20 est éteinte et que le feu est observé de l'extérieur, la seule partie colorée de ce dernier, soit la pastille ou zone filtrante 30, est en grande partie masquée par le miroir 28, d'as­pect incolore. Ainsi, parmi les rayons lumineux en­trant dans l'enceinte du feu (par exemple en lumière du jour), une très faible proportion de ceux-ci ren­contre ladite pastille ou zone 30. Le feu a donc un aspect généralement incolore. On peut noter à cet égard que les éléments de dispersion 34 prévus à la surface intérieure de la glace de fermeture 32 ont pour effet de "diluer" la très faible proportion de lumière amble réfléchie par le feu dans la lumière blanche prédominante qui en sort après réflexion. On peut ici noter que la qualité du résultat obtenu est due au fait que par opposition aux solutions de l'art antérieur, l'élément filtrant donnant la coloration est reporté à l'extérieur du volume défini par la para­bole 24ʺ-26 et la glace de fermeture 32.When the lamp 20 is extinguished and the fire is observed from the outside, the only colored part of the latter, namely the pellet or filtering zone 30, is largely masked by the mirror 28, of colorless appearance. Thus, among the light rays entering the enclosure of the fire (for example in daylight), a very small proportion of these meet said patch or zone 30. The fire therefore has a generally colorless appearance. It can be noted in this regard that the dispersing elements 34 provided on the inner surface of the closing glass 32 have the effect of "diluting" the very small proportion of amble light reflected by the fire in the predominant white light which comes out after reflection. It can be noted here that the quality of the result obtained is due to the fact that, in contrast to the solutions of the prior art, the filtering element giving the coloring is carried outside the volume defined by the parabola 24ʺ-26 and the glass closing 32.

Par ailleurs, pour éviter que la présence du miroir 28 ne provoque l'apparition d'une tache sombre lorsque le feu est éteint, on pourra rendre sa surface intérieure, tournée vers la glace de fermeture, égale­ment réfléchissante.Furthermore, to avoid the presence of the mirror 28 causing the appearance of a dark spot when the fire is out, its interior surface, facing the closing glass, can also be made to be reflective.

Bien entendu, le feu décrit plus haut en réfé­rence à la figure 2 ne constitue qu'un exemple de réa­ lisation parmi d'autres. En particulier, les moyens pour créer le faisceau concentré de lumière blanche dirigé vers le filtre 30 pourront être cons­titués, en variante, par une source lumineuse en combinaison avec un réflecteur et/ou une lentille de formes quelconques. A cet égard, des essais ont démontré que, même lorsque le faisceau concentré qui traverse le filtre 30 n'est pas spécifiquement con­vergent, la qualité du résultat obtenu reste satis­faisante.Of course, the fire described above with reference to FIG. 2 is only an example of a reaction. reading among others. In particular, the means for creating the concentrated beam of white light directed towards the filter 30 may alternatively be constituted by a light source in combination with a reflector and / or a lens of any shape. In this regard, tests have shown that, even when the concentrated beam passing through the filter 30 is not specifically convergent, the quality of the result obtained remains satisfactory.

De plus, il est bien entendu que l'on donnera au filtre 30, dans la plupart des cas circulaire, un diamètre le plus faible possible, et de préfé­rence égal au diamètre du faisceau à cet endroit.In addition, it is understood that the filter 30, in most circular cases, will be given the smallest possible diameter, and preferably equal to the diameter of the beam at this location.

En outre, le miroir 28 pourra consister plus généralement en toute pièce de révolution, telle qu'un cône, un paraboloïde, etc., rendue réfléchis­sante et apte à répartir le faisceau coloré qu'elle reçoit vers le réflecteur parabolique.In addition, the mirror 28 may more generally consist of any part of revolution, such as a cone, a paraboloid, etc., made reflective and capable of distributing the colored beam which it receives towards the parabolic reflector.

Par ailleurs, il est bien entendu que la disposition géométrique des divers éléments, et en particulier la relation entre le miroir 28, son centre, et les foyers Fʹ et F2 pourra être tout à fait quelconque, pourvu que, par essais empiriques ou par calcul, on obtienne à la fois un faisceau coloré d'intensité et de répartition correctes en sortie du feu, et un aspect raisonnablement peu co­loré, lorsque le feu est éteint, en observation ex­térieure. En particulier, le point de convergence F2 du faisceau convergent pourra être situé aussi bien en avant qu'en arrière de la surface adjacente du miroir 28.Furthermore, it is understood that the geometric arrangement of the various elements, and in particular the relationship between the mirror 28, its center, and the foci Fʹ and F2 may be entirely arbitrary, provided that, by empirical tests or by calculation , we obtain both a colored beam of correct intensity and distribution at the exit of the fire, and a reasonably little colored appearance, when the fire is extinguished, in external observation. In particular, the point of convergence F2 of the converging beam may be located both in front of and behind the adjacent surface of the mirror 28.

Si un échauffement excessif risque d'appa­raître dans l'espace relativement petit réservé à la lampe 20, on pourra prévoir, par exemple dans la partie de jonction cylindrique 24ʹ, des fenêtres qui permettront à l'air de circuler.If excessive heating is likely to occur in the relatively small space reserved for the lamp 20, it will be possible to provide, for example in the cylindrical junction portion 24ʹ, windows which will allow the air to circulate.

En outre, on a décrit ci-dessus un feu de signalisation dont la coloration ambre du faisceau correspondait à la fonction de feu clignotant. Il est bien entendu que l'on pourra donner au faisceau, par le biais du filtre 30, toute coloration appro­priée, par exemple rouge pour remplir les fonctions de feu stop et/ou de feu de position.In addition, a traffic light has been described above, the amber coloration of the beam of which corresponds to the flashing light function. It is understood that the beam can be given, by means of the filter 30, any suitable coloring, for example red to fulfill the functions of stop light and / or position light.

Enfin, toute autre modification ou variante conforme à l'esprit de l'invention pourra être ap­portée par l'homme de l'art.Finally, any other modification or variant in accordance with the spirit of the invention may be made by those skilled in the art.

Claims (11)

1. Feu de signalisation pour véhicule, tel qu'un véhicule automobile, susceptible d'émettre un rayonnement lumineux de signalisation coloré à tra­vers une glace de fermeture incolore (32), caracté­risé en ce qu'il comprend un réflecteur du genre pa­rabolique (24ʺ,26) ayant un foyer (Fʹ), une fenêtre ménagée dans le réflecteur dans la région du fond de celui-ci, un filtre coloré (30) disposé dans la fe­nêtre, des moyens (20,24) pour émettre un faisceau concentré de lumière blanche traversant le filtre et dirigé vers la région du foyer du réflecteur, et un miroir (28) disposé dans cette région pour ren­voyer les rayons dudit faisceau, colorés par le fil­tre, vers l'ensemble du réflecteur, ce dernier émet­tant à travers la glace de fermeture ledit rayonne­ment de signalisation coloré.1. Signaling light for a vehicle, such as a motor vehicle, capable of emitting light signaling radiation colored through a colorless closing glass (32), characterized in that it comprises a reflector of the parabolic type (24ʺ , 26) having a focal point (Fʹ), a window formed in the reflector in the region of the bottom thereof, a color filter (30) disposed in the window, means (20,24) for emitting a concentrated beam of white light passing through the filter and directed towards the region of the focal point of the reflector, and a mirror (28) arranged in this region to return the rays of said beam, colored by the filter, towards the whole of the reflector, the latter emitting through the closing glass said colored signaling radiation. 2. Feu de signalisation selon la revendica­tion 1, caractérisé en ce que la direction générale du faisceau est alignée avec l'axe optique du réflec­teur, le filtre (30) étant situé en arrière du miroir (28).2. Signaling light according to claim 1, characterized in that the general direction of the beam is aligned with the optical axis of the reflector, the filter (30) being located behind the mirror (28). 3. Feu de signalisation selon l'une quelcon­que des revendications 1 et 2, caractérisé en ce que les moyens pour émettre un faisceau concentré de lu­mière blanche comprennent une lampe à filament (20) et un second réflecteur (24).3. Signaling light according to any one of claims 1 and 2, characterized in that the means for emitting a concentrated beam of white light comprise a filament lamp (20) and a second reflector (24). 4. Feu de signalisation selon la revendica­tion 3, caractérisé en ce que le second réflecteur (24) est elliptique, son premier foyer (F1) étant situé au voisinage du filament de lampe, le fais­ceau concentré étant convergent vers son second foyer (F2).4. Signaling light according to claim 3, characterized in that the second reflector (24) is elliptical, its first focal point (F1) being located in the vicinity of the lamp filament, the concentrated beam being convergent towards its second focal point (F2) . 5. Feu de signalisation selon la revendica­tion 4, caractérisé en ce que le miroir (28) est situé en aval du point de convergence (F2) du fais­ceau.5. Signaling light according to claim 4, characterized in that the mirror (28) is located downstream from the point of convergence (F2) of the beam. 6. Feu de signalisation selon l'une quelcon­que des revendications 3 à 5, caractérisé en ce que le premier réflecteur est réalisé en deux parties concentriques (24ʺ,26) la partie extérieure (24ʺ) et le second réflecteur (24) étant réalisés d'une pièce.6. Signaling light according to any one of claims 3 to 5, characterized in that the first reflector is produced in two concentric parts (24ʺ, 26) the external part (24ʺ) and the second reflector (24) being produced d 'a piece. 7. Feu de signalisation selon la revendica­tion 6, caractérisé en ce que la partie intérieure (26) du premier réflecteur est réalisée en une matière plastique colorée et comporte un revêtement réfléchissant sur toute sa surface à l'exception d'une région centrale, qui définit ainsi le filtre (30).7. Signaling light according to claim 6, characterized in that the inner part (26) of the first reflector is made of a colored plastic material and has a reflective coating over its entire surface with the exception of a central region, which thus defines the filter (30). 8. Feu de signalisation selon l'une quelcon­que des revendications 1 à 7, caractérisé en ce que la dimension du filtre (30) est voisine de la sec­tion du faisceau concentré à cet endroit.8. Signaling light according to any one of claims 1 to 7, characterized in that the dimension of the filter (30) is close to the section of the concentrated beam at this location. 9. Feu de signalisation selon l'une quelcon­que des revendications 1 à 8, caractérisé en ce que le miroir de renvoi (28) est de forme hémisphérique.9. Signaling light according to any one of claims 1 to 8, characterized in that the deflection mirror (28) is of hemispherical shape. 10. Feu de signalisation selon l'une quelcon­que des revendications précédentes, caractérisé en ce que le foyer (Fʹ) du premier réflecteur (24ʺ,26) est situé à grande proximité de la surface du miroir (28).10. Signaling light according to any one of the preceding claims, characterized in that the focal point (Fʹ) of the first reflector (24ʺ, 26) is located in close proximity to the surface of the mirror (28). 11. Feu de signalisation selon l'une quelcon­que des revendications précédentes, caractérisé en ce que la glace de fermeture incolore (32) comprend des éléments de dispersion de la lumière (34).11. Signaling light according to any one of the preceding claims, characterized in that the colorless closing glass (32) comprises light scattering elements (34).
EP86402901A 1985-12-24 1986-12-22 Signalling lamps with coloured lighting for a motor vehicle Expired - Lifetime EP0230834B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8519158A FR2591968B1 (en) 1985-12-24 1985-12-24 COLOR LIGHTING SIGNAL LIGHT FOR MOTOR VEHICLE
FR8519158 1985-12-24

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EP0230834A1 true EP0230834A1 (en) 1987-08-05
EP0230834B1 EP0230834B1 (en) 1991-01-16

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EP86402901A Expired - Lifetime EP0230834B1 (en) 1985-12-24 1986-12-22 Signalling lamps with coloured lighting for a motor vehicle

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EP (1) EP0230834B1 (en)
DE (1) DE3676991D1 (en)
ES (1) ES2020195B3 (en)
FR (1) FR2591968B1 (en)

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DE8809051U1 (en) * 1988-07-14 1988-09-01 Hella Kg Hueck & Co, 4780 Lippstadt, De
US5777809A (en) * 1995-07-28 1998-07-07 Koito Manufacturing Co., Ltd. Reflection mirror for a vehicle lamp and a method of forming the same
GB2325515A (en) * 1997-05-22 1998-11-25 Koito Mfg Co Ltd Vehicle signalling light with wide angle illumination
EP0997346A1 (en) * 1998-10-29 2000-05-03 Reitter & Schefenacker GmbH & Co. KG Exterior rear view mirror for vehicles , especially motor vehicles
DE19940410A1 (en) * 1999-08-26 2001-03-01 Hella Kg Hueck & Co Direction indicator for vehicles
EP1126211A3 (en) * 2000-02-18 2004-01-14 Volkswagen Aktiengesellschaft Projecting headlight for motor vehicle
US6986594B2 (en) 2002-04-18 2006-01-17 Valeo Wischersystem Gmbh Lighting device for motor vehicles
FR2923579A1 (en) 2007-11-13 2009-05-15 Peugeot Citroen Automobiles Sa Illuminating headlight for motor vehicle, has optical device reflecting secondary light beam formed by portion of main light beam from light source, where secondary beam illuminates offset zone of reflector so as to create light sign
EP2085685A1 (en) 2008-01-31 2009-08-05 Peugeot Citroen Automobiles SA Headlight, in particular with elliptic module, for automobile, with energy recovery

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DE4417695C2 (en) * 1994-05-20 1998-01-29 Reitter & Schefenacker Gmbh Motor vehicle light
GB9703712D0 (en) * 1997-02-22 1997-04-09 Britax Vega Ltd Vehicle signal lamp
US8425096B2 (en) 2009-02-02 2013-04-23 Visteon Global Technologies, Inc. Signal light of mirror type

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FR2154936A5 (en) * 1971-09-30 1973-05-18 Ducellier & Cie
FR2466703A1 (en) * 1979-09-28 1981-04-10 Bosch Gmbh Robert Automobile turning indicator lamp - has colourless cover plate with internal colour filter shielded from view
FR2476798A1 (en) 1980-02-25 1981-08-28 Cibie Projecteurs FIRE, IN PARTICULAR FOR THE SIGNALING OF MOTOR VEHICLES
FR2501333A1 (en) 1981-03-09 1982-09-10 Cibie Projecteurs Automotive signal lamp preventing phantom signals - uses shielded lamp with shaped screen immediately ahead to divert all light onto main reflector and to trap incident light

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Publication number Priority date Publication date Assignee Title
FR2154936A5 (en) * 1971-09-30 1973-05-18 Ducellier & Cie
FR2466703A1 (en) * 1979-09-28 1981-04-10 Bosch Gmbh Robert Automobile turning indicator lamp - has colourless cover plate with internal colour filter shielded from view
FR2476798A1 (en) 1980-02-25 1981-08-28 Cibie Projecteurs FIRE, IN PARTICULAR FOR THE SIGNALING OF MOTOR VEHICLES
FR2501333A1 (en) 1981-03-09 1982-09-10 Cibie Projecteurs Automotive signal lamp preventing phantom signals - uses shielded lamp with shaped screen immediately ahead to divert all light onto main reflector and to trap incident light

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8809051U1 (en) * 1988-07-14 1988-09-01 Hella Kg Hueck & Co, 4780 Lippstadt, De
US5777809A (en) * 1995-07-28 1998-07-07 Koito Manufacturing Co., Ltd. Reflection mirror for a vehicle lamp and a method of forming the same
GB2325515A (en) * 1997-05-22 1998-11-25 Koito Mfg Co Ltd Vehicle signalling light with wide angle illumination
GB2325515B (en) * 1997-05-22 1999-04-28 Koito Mfg Co Ltd Vehicle lamp
EP0997346A1 (en) * 1998-10-29 2000-05-03 Reitter & Schefenacker GmbH & Co. KG Exterior rear view mirror for vehicles , especially motor vehicles
DE19940410A1 (en) * 1999-08-26 2001-03-01 Hella Kg Hueck & Co Direction indicator for vehicles
EP1126211A3 (en) * 2000-02-18 2004-01-14 Volkswagen Aktiengesellschaft Projecting headlight for motor vehicle
US6986594B2 (en) 2002-04-18 2006-01-17 Valeo Wischersystem Gmbh Lighting device for motor vehicles
FR2923579A1 (en) 2007-11-13 2009-05-15 Peugeot Citroen Automobiles Sa Illuminating headlight for motor vehicle, has optical device reflecting secondary light beam formed by portion of main light beam from light source, where secondary beam illuminates offset zone of reflector so as to create light sign
EP2085685A1 (en) 2008-01-31 2009-08-05 Peugeot Citroen Automobiles SA Headlight, in particular with elliptic module, for automobile, with energy recovery

Also Published As

Publication number Publication date
FR2591968A1 (en) 1987-06-26
ES2020195B3 (en) 1991-08-01
FR2591968B1 (en) 1988-04-01
DE3676991D1 (en) 1991-02-21
EP0230834B1 (en) 1991-01-16

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