EP0762049A1 - Signal light with several light sources arranged in line, especially complementary brake light for vehicle - Google Patents

Signal light with several light sources arranged in line, especially complementary brake light for vehicle Download PDF

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Publication number
EP0762049A1
EP0762049A1 EP96401938A EP96401938A EP0762049A1 EP 0762049 A1 EP0762049 A1 EP 0762049A1 EP 96401938 A EP96401938 A EP 96401938A EP 96401938 A EP96401938 A EP 96401938A EP 0762049 A1 EP0762049 A1 EP 0762049A1
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EP
European Patent Office
Prior art keywords
light
sources
emission
mirror
signaling
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EP96401938A
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German (de)
French (fr)
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EP0762049B1 (en
Inventor
Dominique Montalan
Pascal Phan
Hervé Richard
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Valeo Vision SAS
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Valeo Vision SAS
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Classifications

    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/15—Strips of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Definitions

  • the present invention relates generally to signaling lights comprising a plurality of light sources of low power and small dimensions, aligned, and means for processing the light emitted by these sources to form a signaling beam of adequate photometry .
  • This may for example be additional brake lights, arranged in the vicinity of the rear window of motor vehicles.
  • the sources are preferably light-emitting diodes.
  • a brake light must emit a relatively intense light beam, so it is necessary to provide a relatively large number of sources, and close to each other.
  • the known means for forming the beam from the light scattered by the sources are of several types.
  • the diodes are associated with a cylindrical recuperator mirror of section of the parabolic type at the focus of which the diodes are placed.
  • the present invention aims to overcome these limitations of the state of the art, and to propose a signaling light in which the spacing between the different sources can be increased, while retaining a low height and without significant loss of optical efficiency.
  • the invention provides a signaling light as defined in claim 1.
  • a signaling light in this case an additional brake light for rear window, which comprises a housing 10 of elongated shape, closed at the front (relative to the direction of emission of the light, that is to say on the left in FIG. 1 and on the right in FIGS. 3 and 4) by an indicator 60 of profile in the general shape of "U".
  • the housing is fixed to the vehicle by screws V engaged in holes formed in the housing.
  • an elongated printed circuit 30 on which are welded in alignment a plurality of light emitting diodes 20 of conventional type, that is to say comprising a housing 21, a hemispherical part 22 d light emission and two connection tabs 23.
  • the reference R designates a resistor fixing the current passing through the diodes 20.
  • the light-emitting diodes 20 are in this case spaced about 25 mm, and twelve in number, these values however being in no way limiting.
  • each light-emitting diode 20 emits light in an emission indicator (solid angle covered by the radiation) in the form of a cone having a half-angle at the top ⁇ of approximately 50 °.
  • an emission indicator solid angle covered by the radiation
  • sources having other emission indicators can be used.
  • double optical means are used to obtain a signaling beam of suitable photometry.
  • These means consist firstly of a mirror 40, and secondly of a plate 50 situated between the front edges of the mirror and carrying a series of reliefs forming individual Fresnel lenses for each of the sources 20.
  • the mirror 40 is focused on the line passing through the different sources 20.
  • the mirror 40 is fixed to the printed circuit 30 by spacers 41 located between adjacent diodes 20 and connected to the mirror at the level of a flat bottom 42 of said mirror, inoperative due to the reduced emission cone of the sources.
  • the reliefs of the optical plate 50 are designated by the reference 51 in Figure 6, and can be located either on its internal face, or on its external face (as illustrated).
  • the different Fresnel lenses formed by these reliefs are focused on the respective sources and have axes perpendicular to the line of the sources.
  • the arrangement of the mirror 40 and of the Fresnel lens plate 50 is such that part of the conical radiation emitted by each source directly meets the associated Fresnel lens, and another part of this radiation, more outside, meets the upper and lower parts of the mirror 40 to be redirected, substantially horizontally, towards the respective Fresnel lenses.
  • the zones Z1 illustrate, in a plane perpendicular to the axis of a respective source, the part of the radiation reflected by the mirror then passing through the Fresnel lens, while the zone Z2 illustrates the part of the radiation arriving directly on the Fresnel lens.
  • the light emitted towards zone Z2 mainly contributes to allow the fire to satisfy the regulatory photometric grid, in conjunction with balls or tori 61 of light diffusion formed on the internal face of the sight glass, while the light emitted towards zones Z1 contributes to an increase in light intensity, as well as to make the illuminating surface of the lit fire more homogeneous, in particular by the fact that the mirror is of the cylindrical type and does not reduce the light emitted laterally towards the optical axis.
  • the outline of the light output window for the source in question is designated by F.
  • the angle of the transition planes, above and below the horizontal, between zones Z1 and Z2 is designated by ⁇ . Its value is of course less than ⁇ and preferably of the order of 30 to 40 °.
  • a signaling light comprising twelve standard light-emitting diodes spaced 25 mm apart, having a height (at the level of the mirror 40 and of the plate 50) of 10 mm, satisfying the regulations as regards photometry. , with a more than satisfactory intensity and a homogeneous illuminating surface.
  • the mirror 40 can come from molding during the manufacture of the housing 10.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Led Device Packages (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

The lamp includes a low-profile housing which encloses a dozen generally aligned light sources (preferably LEDs) (20) spaced 25 mm apart on an elongated printed circuit board. Emission from each hemispherical end (22) is concentrated by a cylindro-parabolic reflector (40) through the Fresnel lens (50) on to an array of scattering spheres or toroids (61) on the inside of a U-section moulding (60). The body (21) of each source is wider than the emissive hemisphere on to which the reflector and facets (51) of the Fresnel lens are focused. The hemisphere emits into a cone with a semi-vertical angle (θ ) of about 50 degrees , while the reflector restricts the angle of emission (phi) to 30-40 degrees .

Description

La présente invention concerne d'une façon générale les feux de signalisation comportant une pluralité de sources lumineuses de faible puissance et de petites dimensions, alignées, et des moyens de traitement de la lumière émise par ces sources pour former un faisceau de signalisation de photométrie adéquate.The present invention relates generally to signaling lights comprising a plurality of light sources of low power and small dimensions, aligned, and means for processing the light emitted by these sources to form a signaling beam of adequate photometry .

Il peut s'agir par exemple des feux stop complémentaires, disposés au voisinage de la lunette arrière des véhicules automobiles. Les sources sont de préférence des diodes électroluminescentes.This may for example be additional brake lights, arranged in the vicinity of the rear window of motor vehicles. The sources are preferably light-emitting diodes.

Un feu stop doit émettre un faisceau lumineux relativement intense, aussi il est nécessaire de prévoir un nombre de sources relativement important, et proches les unes des autres.A brake light must emit a relatively intense light beam, so it is necessary to provide a relatively large number of sources, and close to each other.

Les moyens connus pour former le faisceau à partir de la lumière diffusée par les sources sont de plusieurs types.The known means for forming the beam from the light scattered by the sources are of several types.

Dans le document DE-A-43 05 585, on associe à chaque diode électroluminescente un dispositif optique du genre lentille de Fresnel disposée en avant de la diode. Cette solution est cependant désavantageuse en ce que pour récupérer la plus grande partie du flux lumineux émis par chaque diode électroluminescente, la hauteur de chaque lentille doit être importante, ce qui accroît l'encombrement du feu.In document DE-A-43 05 585, an optical device of the Fresnel lens type is placed in front of the diode with each light-emitting diode. This solution is however disadvantageous in that in order to recover most of the light flux emitted by each light-emitting diode, the height of each lens must be large, which increases the size of the light.

Dans le document JP-A-61 113290, qui correspond au préambule de la revendication 1, les diodes sont associées à un miroir récupérateur cylindrique à section du genre parabolique au foyer duquel sont placées les diodes.In the document JP-A-61 113290, which corresponds to the preamble of claim 1, the diodes are associated with a cylindrical recuperator mirror of section of the parabolic type at the focus of which the diodes are placed.

Une telle solution est cependant tout à fait inadaptée lorsque l'on utilise des diodes de type "Brewster", c'est-à-dire comportant un corps plus large que leur surface émissive. En effet, le miroir récupérateur devrait alors être largement sur-dimensionné pour accueillir les diodes, très encombrantes, et la partie de fond de ce miroir, masquée par les corps des diodes, ne serait pas à même de remplir son rôle de récupération.However, such a solution is entirely unsuitable when using "Brewster" type diodes, that is to say having a body wider than their emissive surface. Indeed, the recovery mirror should then be greatly oversized to accommodate the very bulky diodes, and the bottom part of this mirror, masked by the bodies of the diodes, would not be able to fulfill its recovery role.

Avec ces moyens optiques, il est généralement nécessaire de prévoir de seize à vingt diodes électroluminescentes, espacées d'environ 15 mm.With these optical means, it is generally necessary to provide from sixteen to twenty light-emitting diodes, spaced about 15 mm apart.

Afin de diminuer le coût de revient du feu, on peut chercher à diminuer le nombre diodes électroluminescentes, en les espaçant davantage les unes des autres pour une largeur de feu donnée. Mais dans ce cas, pour éviter une perte rédhibitoire de rendement optique, on est amené à accroître sensiblement la hauteur optique du feu, comme évoqué plus haut, et donc sa hauteur physique, pour récupérer une proportion accrue de la lumière émise par les sources.In order to reduce the cost price of the light, it is possible to seek to reduce the number of light-emitting diodes, by spacing them more apart from one another for a given width of light. But in this case, to avoid a prohibitive loss of optical efficiency, we are led to significantly increase the optical height of the light, as mentioned above, and therefore its physical height, to recover an increased proportion of the light emitted by the sources.

La présente invention vise à pallier ces limitations de l'état de la techniquen, et à proposer un feu de signalisation dans lequel l'espacement entre les différentes sources puisse être augmenté, tout en conservant une faible hauteur et sans perte significative de rendement optique.The present invention aims to overcome these limitations of the state of the art, and to propose a signaling light in which the spacing between the different sources can be increased, while retaining a low height and without significant loss of optical efficiency.

L'invention propose à cet effet un feu de signalisation tel que défini dans la revendication 1.To this end, the invention provides a signaling light as defined in claim 1.

Des aspects préférés, mais non limitatifs, du feu de signalisation selon l'invention sont définis dans les sous-revendications.Preferred, but not limiting, aspects of the signaling light according to the invention are defined in the subclaims.

D'autres aspects, buts et avantages de la présente invention apparaîtront mieux à la lecture de la description détaillée suivante d'une forme de réalisation préférée de celle-ci, donnée à titre d'exemple non limitatif et faite en référence au dessin annexé, sur lequel :

  • la figure 1 est une vue en coupe horizontale médiane d'un feu de signalisation selon la présente invention,
  • la figure 2 est une vue de face du feu de la figure 1,
  • la figure 3 est une vue en coupe selon la ligne III-III de la figure 1,
  • la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 1,
  • la figure 5 illustre schématiquement des zones de traitements optiques différents du feu de la présente invention, et
  • la figure 6 est une vue en coupe transversale à échelle agrandie illustrant le principe optique de la présente invention.
Other aspects, aims and advantages of the present invention will appear better on reading the following detailed description of a preferred embodiment thereof, given by way of nonlimiting example and made with reference to the accompanying drawing, on which :
  • FIG. 1 is a view in median horizontal section of a signaling light according to the present invention,
  • FIG. 2 is a front view of the light from FIG. 1,
  • FIG. 3 is a sectional view along line III-III of FIG. 1,
  • FIG. 4 is a sectional view along the line IV-IV of FIG. 1,
  • FIG. 5 schematically illustrates different optical treatment zones for the fire of the present invention, and
  • Figure 6 is a cross-sectional view on an enlarged scale illustrating the optical principle of the present invention.

En référence aux figures, on a représenté un feu de signalisation, en l'espèce un feu stop complémentaire pour lunette arrière, qui comprend un boîtier 10 de forme allongée, fermé à l'avant (par rapport à la direction d'émission de la lumière, c'est-à-dire à gauche sur la figure 1 et à droite sur les figures 3 et 4) par un voyant 60 de profil en forme générale de "U". Le boîtier est fixé sur le véhicule par des vis V engagées dans des trous formés dans le boîtier.Referring to the figures, there is shown a signaling light, in this case an additional brake light for rear window, which comprises a housing 10 of elongated shape, closed at the front (relative to the direction of emission of the light, that is to say on the left in FIG. 1 and on the right in FIGS. 3 and 4) by an indicator 60 of profile in the general shape of "U". The housing is fixed to the vehicle by screws V engaged in holes formed in the housing.

Dans le boîtier 10 est monté, par des moyens classiques, un circuit imprimé allongé 30 sur lequel sont soudées en alignement une pluralité de diodes électroluminescentes 20 de type classique, c'est-à-dire comportant un boîtier 21, une partie hémisphérique 22 d'émission de la lumière et deux pattes de connexion 23. La référence R désigne une résistance fixant le courant traversant les diodes 20.In the housing 10 is mounted, by conventional means, an elongated printed circuit 30 on which are welded in alignment a plurality of light emitting diodes 20 of conventional type, that is to say comprising a housing 21, a hemispherical part 22 d light emission and two connection tabs 23. The reference R designates a resistor fixing the current passing through the diodes 20.

Les diodes électroluminescentes 20 sont en l'espèce espacées d'environ 25 mm, et au nombre de douze, ces valeurs n'étant toutefois nullement limitatives.The light-emitting diodes 20 are in this case spaced about 25 mm, and twelve in number, these values however being in no way limiting.

De façon connue en soi, chaque diode électroluminescente 20 émet de la lumière dans une indicatrice d'émission (angle solide couvert par le rayonnement) en forme de cône possédant un demi-angle au sommet θ d'environ 50°. Bien entendu, des sources possédant d'autres indicatrices d'émission peuvent être employées.In a manner known per se, each light-emitting diode 20 emits light in an emission indicator (solid angle covered by the radiation) in the form of a cone having a half-angle at the top θ of approximately 50 °. Of course, sources having other emission indicators can be used.

Selon la présente invention, des doubles moyens optiques sont utilisés pour obtenir un faisceau de signalisation de photométrie appropriée.According to the present invention, double optical means are used to obtain a signaling beam of suitable photometry.

Ces moyens consistent premièrement en un miroir 40, et secondement en une plaque 50 située entre les bords antérieurs du miroir et portant une série de reliefs formant des lentilles de Fresnel individuelles pour chacune des sources 20.These means consist firstly of a mirror 40, and secondly of a plate 50 situated between the front edges of the mirror and carrying a series of reliefs forming individual Fresnel lenses for each of the sources 20.

Le miroir 40 est en l'espèce un miroir cylindro-parabolique, dont la directrice est parallèle à la ligne passant par les différentes sources, et dont la génératrice est une parabole. Son équation dans un repère orthonormé est donc du type y2 = Ax (l'axe y s'étendant horizontalement suivant la direction générale d'émission, l'axe x étant vertical, et l'axe z s'étendant horizontalement suivant la ligne des sources). Le miroir 40 est focalisé sur la ligne passant par les différentes sources 20.The mirror 40 is in this case a cylindro-parabolic mirror, the director of which is parallel to the line passing through the various sources, and the generator of which is a parabola. Its equation in an orthonormal coordinate system is therefore of the type y 2 = Ax (the y axis extending horizontally along the general direction of emission, the x axis being vertical, and the z axis extending horizontally along the line sources). The mirror 40 is focused on the line passing through the different sources 20.

Le miroir 40 est fixé sur le circuit imprimé 30 par des entretoises 41 situées entre des diodes 20 adjacentes et reliées au miroir au niveau d'un fond plat 42 dudit miroir, inopérant du fait du cône d'émission réduit des sources.The mirror 40 is fixed to the printed circuit 30 by spacers 41 located between adjacent diodes 20 and connected to the mirror at the level of a flat bottom 42 of said mirror, inoperative due to the reduced emission cone of the sources.

Les reliefs de la plaque optique 50 sont désignés par la référence 51 sur la figure 6, et peuvent se situer soit sur sa face interne, soit sur sa face externe (comme illustré). Les différentes lentilles de Fresnel formées par ces reliefs sont focalisées sur les sources respectives et possèdent des axes perpendiculaires à la ligne des sources.The reliefs of the optical plate 50 are designated by the reference 51 in Figure 6, and can be located either on its internal face, or on its external face (as illustrated). The different Fresnel lenses formed by these reliefs are focused on the respective sources and have axes perpendicular to the line of the sources.

Comme le montre bien la figure 6, l'agencement du miroir 40 et de la plaque à lentilles de Fresnel 50 est tel qu'une partie du rayonnement conique émis par chaque source rencontre directement la lentille de Fresnel associée, et qu'une autre partie de ce rayonnement, plus à l'extérieur, rencontre les parties supérieure et inférieure du miroir 40 pour être redirigé, sensiblement horizontalement, vers les lentilles de Fresnel respectives.As FIG. 6 clearly shows, the arrangement of the mirror 40 and of the Fresnel lens plate 50 is such that part of the conical radiation emitted by each source directly meets the associated Fresnel lens, and another part of this radiation, more outside, meets the upper and lower parts of the mirror 40 to be redirected, substantially horizontally, towards the respective Fresnel lenses.

Plus précisément, les zones Z1 illustrent, dans un plan perpendiculaire à l'axe d'une source respective, la partie du rayonnement réfléchie par le miroir puis traversant la lentille de Fresnel, tandis que la zone Z2 illustre la partie du rayonnement arrivant directement sur la lentille de Fresnel.More precisely, the zones Z1 illustrate, in a plane perpendicular to the axis of a respective source, the part of the radiation reflected by the mirror then passing through the Fresnel lens, while the zone Z2 illustrates the part of the radiation arriving directly on the Fresnel lens.

La lumière émise vers la zone Z2 contribue principalement à permettre au feu de satisfaire à la grille photométrique règlementaire, en conjonction avec des billes ou tores 61 de diffusion de lumière formés sur la face interne du voyant, tandis que la lumière émise vers les zones Z1 contribue à un surcroit d'intensité lumineuse, ainsi qu'à rendre la plage éclairante du feu allumé plus homogène, notamment par le fait que le miroir est de type cylindrique et ne rabat pas la lumière émise latéralement vers l'axe optique.The light emitted towards zone Z2 mainly contributes to allow the fire to satisfy the regulatory photometric grid, in conjunction with balls or tori 61 of light diffusion formed on the internal face of the sight glass, while the light emitted towards zones Z1 contributes to an increase in light intensity, as well as to make the illuminating surface of the lit fire more homogeneous, in particular by the fact that the mirror is of the cylindrical type and does not reduce the light emitted laterally towards the optical axis.

Le contour de la fenêtre de sortie de lumière pour la source considérée est désignée par F.The outline of the light output window for the source in question is designated by F.

L'angle des plans de transition, au-dessus et au-dessous de l'horizontale, entre les zones Z1 et Z2 est désigné par ϕ. Sa valeur est bien entendu inférieure à θ et de préférence de l'ordre de 30 à 40°.The angle of the transition planes, above and below the horizontal, between zones Z1 and Z2 is designated by ϕ. Its value is of course less than θ and preferably of the order of 30 to 40 °.

Grâce à la présente invention, on a pu réaliser un feu de signalisation comportant douze diodes électroluminescentes standard espacées de 25 mm, possédant une hauteur (au niveau du miroir 40 et de la plaque 50) de 10 mm, satisfaisant aux règlements en matière de photométrie, présentant une intensité plus que satisfaisante et une plage éclairante homogène. Le tirage des lentilles de Fresnel était égal à 11 mm et l'équation du miroir 40 était y2 = 2x.Thanks to the present invention, it has been possible to produce a signaling light comprising twelve standard light-emitting diodes spaced 25 mm apart, having a height (at the level of the mirror 40 and of the plate 50) of 10 mm, satisfying the regulations as regards photometry. , with a more than satisfactory intensity and a homogeneous illuminating surface. The Fresnel lens pull was 11 mm and the equation for mirror 40 was y 2 = 2x.

Bien entendu, la présente invention n'est nullement limitée à la forme de réalisation décrite et représentée, mais l'homme de l'art saura y apporter toute variante ou modification conforme à son esprit.Of course, the present invention is not limited to the embodiment described and shown, but those skilled in the art will be able to make any variant or modification in accordance with his spirit.

Ainsi, de façon non illustrée, le miroir 40 peut venir de moulage lors de la fabrication du boîtier 10.Thus, not shown, the mirror 40 can come from molding during the manufacture of the housing 10.

Claims (7)

Feu de signalisation, notamment feu stop complémentaire, pour véhicule automobile, du type comprenant un boîtier (10) de faible hauteur, une pluralité de sources lumineuses (20) généralement alignées et émettant chacune de la lumière dans une indicatrice d'émission donnée, des moyens optiques (40, 50) pour redresser la lumière émise par les sources vers une direction générale d'émission, et un voyant (60) pourvu d'éléments optiques de diffusion de la lumière, caractérisé en ce que les sources lumineuses sont constituées par des diodes électroluminescentes (20) comportant un corps (21) plus large qu'une surface émissive (22), et en ce que les moyens optiques de redressement de la lumière comprennent des lentilles (51) focalisées au voisinage des sources respectives (20) et directement exposées au rayonnement émis par les sources respectives dans une partie centrale (Z2) de leur indicatrice d'émission, ainsi qu'un miroir cylindrique (40) s'étendant vers les lentilles à partir des corps (21) des diodes électroluminescentes et rabattant vers lesdites lentilles la lumière émise par les sources dans au moins une partie de bord de leur indicatrice d'émission.Signaling light, in particular complementary stop light, for a motor vehicle, of the type comprising a low-rise housing (10), a plurality of light sources (20) generally aligned and each emitting light in a given emission indicator, optical means (40, 50) for rectifying the light emitted by the sources towards a general direction of emission, and an indicator (60) provided with optical elements for diffusing light, characterized in that the light sources are constituted by light emitting diodes (20) having a body (21) wider than an emissive surface (22), and in that the optical means for rectifying the light comprise lenses (51) focused in the vicinity of the respective sources (20) and directly exposed to the radiation emitted by the respective sources in a central part (Z2) of their emission indicator, as well as a cylindrical mirror (40) extending towards the lenses from the bodies (21) of the light-emitting diodes and bending towards said lenses the light emitted by the sources in at least one edge part of their emission indicator. Feu de signalisation selon la revendication 1, caractérisé en ce que les lentilles (51) sont des lentilles de Fresnel disposées sur une plaque commune (50).Signaling light according to claim 1, characterized in that the lenses (51) are Fresnel lenses arranged on a common plate (50). Feu de signalisation selon l'une des revendications 1 et 2, caractérisé en ce que le miroir (40) présente un profil parabolique et est focalisé au voisinage d'une ligne passant par les différentes sources (20).Signaling light according to one of claims 1 and 2, characterized in that the mirror (40) has a parabolic profile and is focused in the vicinity of a line passing through the different sources (20). Feu de signalisation selon la revendication 3, caractérisé en ce que l'indicatrice d'émission de chaque source est un cône présentant un demi-angle au sommet (θ) d'environ 50°, et en ce que le miroir couvre une étendue angulaire d'émission vers le haut et vers le bas limitée à un angle (ϕ) d'environ 30 à 40° par rapport à la direction générale d'émission.Signaling light according to claim 3, characterized in that the emission indicator of each source is a cone having a half-angle at the top (θ) of approximately 50 °, and in that the mirror covers an angular extent of emission upwards and downwards limited to an angle (ϕ) of approximately 30 to 40 ° relative to the general direction of emission. Feu de signalisation selon la revendication 4, caractérisé en ce que les diodes électroluminescentes (20) sont espacées les unes des autres d'environ 25 mm.Signaling light according to claim 4, characterized in that the light-emitting diodes (20) are spaced from each other by about 25 mm. Feu de signalisation selon l'une des revendications 1 à 5, caractérisé en ce que les diodes électroluminescentes (20) sont soudées sur un circuit imprimé commun (30), et en ce que le miroir (40) est monté sur le circuit imprimé.Signaling light according to one of claims 1 to 5, characterized in that the light-emitting diodes (20) are soldered on a common printed circuit (30), and in that the mirror (40) is mounted on the printed circuit. Feu de signalisation selon la revendication 6, caractérisé en ce que le miroir (40) possède un fond plat (42) au niveau duquel il est monté sur le circuit imprimé (30) par l'intermédiaire d'entretoises (41).Signaling light according to claim 6, characterized in that the mirror (40) has a flat bottom (42) at which it is mounted on the printed circuit (30) by means of spacers (41).
EP96401938A 1995-09-11 1996-09-11 Signal light with several light sources arranged in line, especially complementary brake light for vehicle Expired - Lifetime EP0762049B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9510599A FR2738621B1 (en) 1995-09-11 1995-09-11 SIGNALING LIGHT WITH MULTIPLE ALIGNED SOURCES, IN PARTICULAR ADDITIONAL STOP LIGHT FOR MOTOR VEHICLE
FR9510599 1995-09-11

Publications (2)

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EP0762049A1 true EP0762049A1 (en) 1997-03-12
EP0762049B1 EP0762049B1 (en) 2003-06-25

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EP96401938A Expired - Lifetime EP0762049B1 (en) 1995-09-11 1996-09-11 Signal light with several light sources arranged in line, especially complementary brake light for vehicle

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US (1) US5762414A (en)
EP (1) EP0762049B1 (en)
JP (1) JPH09180517A (en)
DE (1) DE69628792T2 (en)
ES (1) ES2201160T3 (en)
FR (1) FR2738621B1 (en)

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EP2669117A3 (en) * 2012-05-30 2014-12-17 Tong Yah Electronic Technology Co., Ltd. Vehicular light
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WO1998006975A1 (en) * 1996-08-13 1998-02-19 Eveready Battery Company, Inc. Lighting devices e.g. bicycle lamps
FR2776595A1 (en) * 1998-03-31 1999-10-01 Valeo Vision SIGNAL LIGHT COMPRISING MULTIPLE LIGHT SOURCES
EP0947761A1 (en) * 1998-03-31 1999-10-06 Valeo Vision Signaling light with several light sources
US6170971B1 (en) 1998-03-31 2001-01-09 Valeo Vision Indicating light display having several light sources
EP1077344A2 (en) 1999-08-16 2001-02-21 FER Fahrzeugelektrik GmbH Lamp
DE19938734A1 (en) * 1999-08-16 2001-03-01 Fer Fahrzeugelektrik Gmbh Light, especially for vehicle, has light source arranged so that central light source axis is not parallel to main beam direction in which reflector deflects light from source
EP1087175A3 (en) * 1999-09-25 2002-10-30 Volkswagen Aktiengesellschaft Motor vehicle signal lamp
ES2396298A1 (en) * 2010-05-20 2013-02-20 Sistemas Electrónicos Y Manipulados Para Automoción Y La Industria, S.A. Central brake light integrated. (Machine-translation by Google Translate, not legally binding)
EP2669117A3 (en) * 2012-05-30 2014-12-17 Tong Yah Electronic Technology Co., Ltd. Vehicular light
CN109307202A (en) * 2017-07-26 2019-02-05 朗德万斯公司 Light emitting device and lens for light emitting device
CN109307202B (en) * 2017-07-26 2021-05-11 朗德万斯公司 Light emitting device and lens for light emitting device
FR3074117A1 (en) * 2017-11-30 2019-05-31 Saint-Gobain Glass France GLAZING OF VEHICLE WITH EXTERNAL LIGHT SIGNALING, VEHICLE INCORPORATING AND MANUFACTURING THE SAME.
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Also Published As

Publication number Publication date
ES2201160T3 (en) 2004-03-16
FR2738621B1 (en) 1997-11-28
FR2738621A1 (en) 1997-03-14
US5762414A (en) 1998-06-09
DE69628792D1 (en) 2003-07-31
DE69628792T2 (en) 2004-05-19
EP0762049B1 (en) 2003-06-25
JPH09180517A (en) 1997-07-11

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