EP2547955B1 - Device for procuring an infinity effect for a motor vehicle signalling light - Google Patents

Device for procuring an infinity effect for a motor vehicle signalling light Download PDF

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Publication number
EP2547955B1
EP2547955B1 EP11709388.0A EP11709388A EP2547955B1 EP 2547955 B1 EP2547955 B1 EP 2547955B1 EP 11709388 A EP11709388 A EP 11709388A EP 2547955 B1 EP2547955 B1 EP 2547955B1
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EP
European Patent Office
Prior art keywords
mirror
led
transparent
light
semi
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Application number
EP11709388.0A
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German (de)
French (fr)
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EP2547955A1 (en
Inventor
Alain Buisson
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.)
Marelli Automotive Lighting France SAS
Original Assignee
Automotive Lighting Rear Lamps France SAS
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Publication of EP2547955A1 publication Critical patent/EP2547955A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for 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
    • F21S43/30—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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2106/00—Interior vehicle lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of lighting for the signaling of motor vehicles. It relates more particularly to a device providing relief to the illumination of traffic lights and / or lighting outside or inside vehicles.
  • the present invention aims to provide an original means for providing an infinite effect to the signaling lighting of motor vehicles.
  • the device according to the invention also makes it possible to add stylistic effects to the traffic signals of the vehicles.
  • a new device for a motor vehicle traffic light comprising at least one LED or other type of light source, comprises an optical assembly of at least a first reflector (R1) constituted by a mirror and at least one second reflector reflector (R1) constituted by a mirror and at least a second reflector (R2) constituted by a semi-transparent mirror, said optical assembly being combined with a curtain diffuser (D1) of transparent material in which a light emitted by at least one LED, while the mirror, the semi-transparent mirror and the curtain have their planes or their mean planes substantially parallel to each other, and while the light transmitted and / or reflected by said optical assembly is transmitted and visible by the observer by the face of said second reflector (R2) opposite that facing the other elements of said optical assembly.
  • D1 curtain diffuser
  • the optical assembly is preferably integrated or integrable in a housing, the general shape of which is preferably that of a slice of cylinder, to constitute a module.
  • Another object of the invention is thus a lighting and / or signaling module for the exterior or interior of a motor vehicle, which comprises at least one device according to the present invention, integrated or integrable into a set including all other necessary functional elements.
  • the second reflector (R2) and optionally the curtain diffuser (D1) are arranged in front of the LED or LEDs.
  • the present invention therefore relates to a device for motor vehicle signaling lights as in claim 1 and in the description which follows.
  • the planes or the average planes respectively of the mirror and (the) mirror (s) semi-transparent (s) are substantially parallel to each other.
  • the planes or the average planes respectively of the mirror and (the) mirror (s) semitransparent (s) between them an angle substantially between 1 and 3 degrees of angle.
  • the spatial variability of the images of the unit lighting sources is thus obtained, providing an even more original style effect.
  • the semi-transparent mirror (R2) can constitute the protective glass of the module. Alternatively, this window is added classically.
  • the outer periphery of the device according to the invention may comprise a shoulder, providing an underlining of the outline of the fire.
  • curtain At the end of the light guide called curtain opposite to that which is equipped with at least one LED, it is possible to provide either a cover to mask the view of the light escaping from the curtain on its periphery, or a return element preferably metal, or else chamfers and / or prisms.
  • the device according to the invention comprises a mirror 1 and a semi-transparent mirror 2, and it comprises LEDs 3 suitably powered and directed to emit in the direction perpendicular to the mean plane of the mirror 1 of the light rays which are partially reflected by the semitransparent mirror 2 and partly transmitted therethrough.
  • the effect of depth changes with the angle of view; multiple reflections are more or less spaced.
  • one or more of the LEDs 3 may be non-existent or switchable, so as to reserve the effects of infinity on the images of the patterns carried by the curtain 4.
  • the device according to the invention provides an infinite number of images of which only 7 to 12 on average are visible by the human eye.
  • the light source constituted by the LED or LEDs illuminating the screen and diffusing therein a distributed light, allows viewing one or more patterns engraved on this screen or included in this screen. It is the light thus diffused which is then subjected to the successive reflections of the mirror 1 and / or the semi-transparent mirrors 2 which provides an image of the aforesaid pattern (s) having a remarkable attractiveness, with an effect infinite.
  • the device according to the invention is mainly intended to serve as a lantern and / or position light and / or stop light and / or flashing light, etc., depending on the case both at the rear and at the front. cars. It can also equip an external lighting device such as a side repeater of a vehicle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

La présente invention concerne le domaine de l'éclairage pour la signalisation des véhicules automobiles. Elle concerne plus particulièrement un dispositif procurant du relief à l'éclairage des feux de signalisation et/ou d'éclairage extérieur ou intérieur de véhicules.The present invention relates to the field of lighting for the signaling of motor vehicles. It relates more particularly to a device providing relief to the illumination of traffic lights and / or lighting outside or inside vehicles.

Il est de plus en plus recherché de diminuer autant que possible le volume des boîtiers regroupant l'ensemble ou un sous-ensemble des feux de signalisation dont la réglementation impose de doter les véhicules automobiles. Cela se trouve facilité par l'utilisation de LED à la place ou en complément des lampes classiques.It is increasingly sought to reduce as much as possible the volume of boxes comprising all or a subset of the traffic lights whose regulations require to equip motor vehicles. This is facilitated by the use of LEDs instead of or in addition to conventional lamps.

Il pouvait paraître a priori contradictoire de tenter en même temps de donner de la profondeur, et en particulier une impression de relief, à l'éclairage émis par les boîtiers de feux de signalisation ayant un volume ainsi réduit.It may seem a priori contradictory to attempt at the same time to give depth, and in particular a feeling of relief, the lighting emitted by the traffic light boxes having a reduced volume.

On connaît dans d'autres domaines, en particulier dans la décoration intérieure de l'univers domestique ou professionnel, des systèmes de renvoi de lumière par des miroirs placés en vis-à-vis pour procurer une impression d'infini par les réflexions successives de l'image du lieu renvoyée par chacun des miroirs successivement vers l'autre comme cela est notamment le cas dans le brevet US5787618 . Les images avec sensation d'infini ainsi obtenues utilisent des miroirs entièrement réfléchissants et donnent une impression qui ne varie pas substantiellement selon que l'on se place auprès ou au loin de l'un des miroirs concernés. Quant aux sources de lumière mises en jeu, elles sont toutes situées en avant de l'un au moins des miroirs, tandis que l'observateur est, quant à lui, dans un espace situé entre les deux miroirs.In other fields, particularly in the interior decoration of the domestic or professional world, light-return systems are known by mirrors placed opposite each other to provide an impression of infinity by the successive reflections of the image of the place returned by each of the mirrors successively to the other, as is the case in particular in the patent US5787618 . The images with sensation of infinity thus obtained use fully reflecting mirrors and give an impression that does not vary substantially depending on whether one is placed near or far from one of the mirrors concerned. As for the light sources involved, they are all located in front of at least one of the mirrors, while the observer is, meanwhile, in a space between the two mirrors.

La présente invention vise à procurer un moyen original pour fournir un effet d'infini à l'éclairage de signalisation des véhicules automobiles. Le dispositif selon l'invention permet également d'ajouter des effets de style aux feux de signalisation des véhicules.The present invention aims to provide an original means for providing an infinite effect to the signaling lighting of motor vehicles. The device according to the invention also makes it possible to add stylistic effects to the traffic signals of the vehicles.

Suivant l'invention, un nouveau dispositif pour feu de signalisation de véhicule automobile, comportant au moins une source de lumière de type LED ou autre, comprend un ensemble optique d'au moins un premier réflecteur (R1) constitué par un miroir et d'au moins un deuxième réflecteur réflecteur (R1) constitué par un miroir et d'au moins un deuxième réflecteur (R2) constitué par un miroir semi-transparent, ledit ensemble optique étant combiné avec un diffuseur rideau (D1) en matériau transparent dans lequel est diffusée une lumière émise par au moins une LED, tandis que le miroir, le miroir semi-transparent et le rideau ont leurs plans ou leurs plans moyens sensiblement parallèles entre eux, et tandis que la lumière transmise et/ou réfléchie par ledit ensemble optique est transmise et visible par l'observateur par la face du dit deuxième réflecteur (R2) opposée à celle tournée vers les autres éléments du dit ensemble optique.According to the invention, a new device for a motor vehicle traffic light, comprising at least one LED or other type of light source, comprises an optical assembly of at least a first reflector (R1) constituted by a mirror and at least one second reflector reflector (R1) constituted by a mirror and at least a second reflector (R2) constituted by a semi-transparent mirror, said optical assembly being combined with a curtain diffuser (D1) of transparent material in which a light emitted by at least one LED, while the mirror, the semi-transparent mirror and the curtain have their planes or their mean planes substantially parallel to each other, and while the light transmitted and / or reflected by said optical assembly is transmitted and visible by the observer by the face of said second reflector (R2) opposite that facing the other elements of said optical assembly.

L'ensemble optique est de préférence intégré ou intégrable dans un boîtier, dont la forme générale est de préférence celle d'une tranche de cylindre, pour constituer un module.The optical assembly is preferably integrated or integrable in a housing, the general shape of which is preferably that of a slice of cylinder, to constitute a module.

Un autre objet de l'invention est ainsi un module d'éclairage et/ou de signalisation pour l'extérieur ou l'intérieur d'un véhicule automobile, qui comporte au moins un dispositif conforme à la présente invention, intégré ou intégrable dans un ensemble comportant tous les autres éléments fonctionnels nécessaires.Another object of the invention is thus a lighting and / or signaling module for the exterior or interior of a motor vehicle, which comprises at least one device according to the present invention, integrated or integrable into a set including all other necessary functional elements.

Dans l'ensemble optique selon l'invention, le deuxième réflecteur (R2) et en option le diffuseur rideau (D1) sont disposés en avant de la ou des LED.In the optical assembly according to the invention, the second reflector (R2) and optionally the curtain diffuser (D1) are arranged in front of the LED or LEDs.

Le dispositif selon l'invention comporte ainsi, comme sous-ensemble d'éclairage situé dans l'espace compris entre le miroir et le miroir semi-transparent, et substantiellement constitué d'un matériau optique transparent et d'au moins une source de lumière de type LED agencée pour émettre des rayons lumineux se propageant à l'intérieur de l'épaisseur du dit matériau optique transparent, selon la demande de brevet français déposée le 11 décembre 2009 sous le numéro 09/ 05984 au nom de la même demanderesse. En bref, un tel sous-ensemble comprend essentiellement:

  • une plaque d'un matériau optique transparent formant rideau,
  • ladite plaque comportant au moins un renflement allongé bilatéral, de section droite globale substantiellement circulaire, ayant son axe longitudinal moyen dans le plan moyen de ladite plaque et apte à former un guide de lumière, et
  • au moins une LED placée à au moins l'une des extrémités du dit guide de lumière, avec son axe principal orthogonal à l'axe longitudinal du dit guide de lumière.
The device according to the invention thus comprises, as a lighting subset located in the space between the mirror and the semi-transparent mirror, and substantially made of a transparent optical material and at least one light source. LED type arranged to emit light rays propagating inside the thickness of said transparent optical material, according to the French patent application filed December 11, 2009 under the number 09/05984 in the name of the same plaintiff. In short, such a subset essentially comprises:
  • a plate of a transparent optical material forming a curtain,
  • said plate having at least one bilateral elongate bulge of substantially circular overall cross-section having its mean longitudinal axis in the mean plane of said plate and adapted to form a light guide, and
  • at least one LED placed at at least one end of said light guide, with its main axis orthogonal to the longitudinal axis of said light guide.

La présente invention a donc pour objet un dispositif pour feux de signalisation de véhicule automobile tel que à la revendication 1 et dans la description qui suit.The present invention therefore relates to a device for motor vehicle signaling lights as in claim 1 and in the description which follows.

Selon l'invention, les plans ou les plans moyens respectivement du miroir et du(des) miroir(s) semi-transparent(s) sont sensiblement parallèles entre eux.According to the invention, the planes or the average planes respectively of the mirror and (the) mirror (s) semi-transparent (s) are substantially parallel to each other.

Il est cependant envisageable que les plans ou les plans moyens respectivement du miroir et du(des) miroir(s) semi-transparent(s) fassent entre eux un angle sensiblement compris entre 1 et 3 degrés d'angle. On obtient alors une variabilité spatiale des images des sources d'éclairage unitaires, procurant un effet de style encore plus original.However, it is conceivable that the planes or the average planes respectively of the mirror and (the) mirror (s) semitransparent (s) between them an angle substantially between 1 and 3 degrees of angle. The spatial variability of the images of the unit lighting sources is thus obtained, providing an even more original style effect.

Dans des formes de mise en oeuvre avantageuses des différents aspects de l'invention, l'une ou l'autre des dispositions/modalités suivantes peut être utilisée, séparément ou en combinaison:

  • L'ensemble optique est disposé perpendiculairement ou sensiblement perpendiculairement à l'axe optique du faisceau émis par la ou les LED.
  • La direction moyenne d'émission des LED est parallèle à l'axe optique du module.
  • Le miroir (R1) est situé sensiblement au niveau des LED, avec sa face réfléchissante tournée vers l'avant, tandis que le miroir (R1) est évidé ou inexistant au niveau des LED pour permettre à celles-ci d'émettre leur faisceau lumineux en avant du dit miroir (R1).
  • Le miroir (R1) est lui-même un miroir semi-transparent identique à ou différent de celui qui constitue le deuxième réflecteur (R2), et dans ce cas les LED sont munies de réflecteurs.
  • Le rideau (D1) est confondu avec le miroir (R1).
  • Le miroir (R1) est choisi parmi les réflecteurs, les miroirs au sens propre, les semi-miroirs, et peut être plan, conique, elliptique, semi-elliptique, hyperbolique, spiral, spiral logarithmique, hélicoïdal, et autres.
  • Le miroir (R1) peut avoir des courbures variables, y compris entre zones différentes d'un même miroir. Par exemple, il peut être plan sur toute sa partie centrale et sphérique sur le pourtour.
  • Le miroir (R1) peut présenter une couleur lorsque les LED sont éteintes, par exemple si l'on utilise un autre métal au lieu de Al dans un traitement de dépôt sous argon.
  • Au moins une LED est disposée en position centrale dans le module et, en combinaison avec un rideau lui-même confondu avec le miroir (R1), procure un effet de relief ou effet d'infini inversé, notamment apprécié pour marquer l'allumage d'un feu de stop.
  • La face réfléchissante du miroir semi-transparent (R2) ou en option (R1) peut être réalisée par a) fixation d'un film semi-transparent, ou b) métallisation directe (par exemple d'aluminium ou d'autres métaux par sputtering), c) dépôt d'une couche mince sur un voyant ou un écran transparent qui permet d'obtenir des couleurs différenciées tout en gardant la semi-transparence ; la technique a) est maîtrisable sur des surfaces planes et la technique b) a l'avantage de pouvoir être effectuée sur des surfaces planes et complexes.
  • Le miroir semi-transparent (R2) ou en option (R1) peut être de type cristal ou au contraire coloré (par exemple: ambre, jaune, vert fluo, bleu police, combinaison de lumière rouge avec matière transparente de couleur verte, ou encore fumé qui donne un aspect noir lorsque l'éclairage est éteint et rouge quand il est allumé.
  • Il y a un ratio entre la transparence et la transmission du miroir semi-transparent, et en fonction de l'objectif à atteindre (plus ou moins de performance photométrique ou plus de ou moins de profondeur (effet de style)) ces coefficients peuvent être aisément adaptés par l'homme du métier.
  • Le module présente un aspect coloré, par exemple en rouge, soit lorsqu'il est éteint ou allumé, soit seulement lorsqu'il est allumé.
  • En option, on ajoute entre les deux miroirs (R1) et (R2) un système optique supplémentaire apportant une source lumineuse parallèle aux autres, pour procurer un feu de signalisation.
  • Le dispositif remplit la fonction réglementaire de lanterne pour une première couronne de LED disposées en cercle autour d'un point central, et celle de stop doté d'une intensité plus forte et d'un effet de relief venant du fond.
  • L'ensemble ou un sous-ensemble de celui-ci peut être piloté électroniquement, par exemple par un système résistif ou par un PWM (Pulse Wave Modulation), qui fait varier la fréquence du courant entre 80 et 150 Hz et qui permet une variation de l'intensité lumineuse pour obtenir des fonctions alternatives stop et lanterne.
  • L'anneau central ne s'allume que quand on appuie sur le stop.
  • L'un au moins des miroirs (R1) et (R2) est sphérique; il assure un maintien de l'effet de profondeur ou d'infini entre 20 et 30 m. Le nombre des répétitions visibles par l'oeil humain étant alors fonction de l'intensité de la source lumineuse.
  • Le dispositif est agencé pour procurer la répétition d'un motif allumé entre un miroir (réflexion R = 100%) et un miroir semi-transparent (réflexion R ≈ 50% et transmission T ≈ 50%).
  • L'aspect style avec effet de profondeur procuré par le dispositif a l'aspect de pointillés ou d'une ligne continue ou quelconque.
  • Les LED sont disposées en périphérie et/ ou au centre du module; elles éclairent en direct ou dans la tranche d'un rideau.
  • Un rideau est intégré entre les deux miroirs (R1) et (R2) pour permettre de créer une forme allumée qui se réfléchit plusieurs fois.
  • Pour un effet lumineux encore plus spectaculaire ledit rideau comporte une ouverture biseautée sur son pourtour.
  • Le rideau reçoit par l'une ou plusieurs de ses tranches l'éclairage de plusieurs LED, avantageusement groupées dans un ou plusieurs PCB.
  • La surface du miroir (R1) est discontinue ou perforée à l'endroit où sont disposées les LED, avantageusement en position périphérique et/ou centrale dans un module circulaire ou sensiblement circulaire.
  • Les LED peuvent être remplacées ou complétées par des lampes de 16 W, à filament axial.
  • La forme du boîtier du module peut être quelconque, par exemple circulaire, elliptique, carrée, etc., ou spécifique pour procurer une signature.
In advantageous embodiments of the various aspects of the invention, one or other of the following provisions / terms can be used, separately or in combination:
  • The optical assembly is arranged perpendicularly or substantially perpendicular to the optical axis of the beam emitted by the LED or LEDs.
  • The average direction of emission of the LEDs is parallel to the optical axis of the module.
  • The mirror (R1) is situated substantially at the level of the LEDs, with its reflecting face turned forward, while the mirror (R1) is hollowed out or non-existent at the LEDs to enable them to emit their light beam in front of said mirror (R1).
  • The mirror (R1) is itself a semi-transparent mirror identical to or different from that which constitutes the second reflector (R2), and in this case the LEDs are provided with reflectors.
  • The curtain (D1) is confused with the mirror (R1).
  • The mirror (R1) is chosen from among the reflectors, the mirrors in the proper sense, the semi-mirrors, and can be plane, conical, elliptical, semi-elliptical, hyperbolic, spiral, logarithmic spiral, helical, and others.
  • The mirror (R1) may have variable curvatures, including between different areas of the same mirror. For example, it can be plane on all its central and spherical part on the periphery.
  • The mirror (R1) may have a color when the LEDs are extinguished, for example if another metal is used instead of Al in an argon deposition treatment.
  • At least one LED is arranged centrally in the module and, in combination with a curtain itself confused with the mirror (R1), provides a relief effect or inverted infinity effect, particularly appreciated to mark the ignition of a stop light.
  • The reflecting face of the semi-transparent mirror (R2) or optionally (R1) can be achieved by a) fixing a semi-transparent film, or b) direct metallization (for example of aluminum or other metals by sputtering ), c) depositing a thin layer on a light or a transparent screen which makes it possible to obtain differentiated colors while keeping the semi-transparency; technique a) is controllable on flat surfaces and technique b) has the advantage of being able to be performed on flat and complex surfaces.
  • The semitransparent mirror (R2) or optional mirror (R1) can be of the crystal type or on the contrary colored (for example: amber, yellow, fluorescent green, blue font, combination of red light with green transparent material, or else smoked which gives a black appearance when the lighting is off and red when it is lit.
  • There is a ratio between the transparency and the transmission of the semi-transparent mirror, and depending on the objective to be achieved (more or less photometric performance or more or less depth (style effect)) these coefficients can be easily adapted by those skilled in the art.
  • The module has a colored appearance, for example in red, when it is off or on, or only when it is turned on.
  • Optionally, there is added between the two mirrors (R1) and (R2) an additional optical system providing a light source parallel to the others, to provide a traffic light.
  • The device fulfills the regulatory function of lantern for a first ring of LEDs arranged in a circle around a point central, and that stop with a stronger intensity and a relief effect from the bottom.
  • The assembly or a subset thereof can be electronically controlled, for example by a resistive system or by a PWM (Pulse Wave Modulation), which varies the frequency of the current between 80 and 150 Hz and allows a variation the light intensity to obtain alternative functions stop and lantern.
  • The center ring only comes on when the stop is pressed.
  • At least one of the mirrors (R1) and (R2) is spherical; it maintains the effect of depth or infinity between 20 and 30 m. The number of repetitions visible by the human eye is then a function of the intensity of the light source.
  • The device is arranged to provide the repetition of a pattern illuminated between a mirror (reflection R = 100%) and a semi-transparent mirror (reflection R ≈ 50% and transmission T ≈ 50%).
  • The depth effect style provided by the device has the appearance of a dotted line or a continuous line or whatever.
  • The LEDs are arranged at the periphery and / or at the center of the module; they illuminate live or in the edge of a curtain.
  • A curtain is integrated between the two mirrors (R1) and (R2) to allow to create a lit form that is reflected several times.
  • For an even more spectacular light effect said curtain has a beveled opening on its periphery.
  • The curtain receives by one or more of its slices the illumination of several LEDs, advantageously grouped in one or more PCBs.
  • The surface of the mirror (R1) is discontinuous or perforated where the LEDs are arranged, advantageously in the peripheral and / or central position in a circular or substantially circular module.
  • The LEDs can be replaced or supplemented by 16 W axial filament lamps.
  • The shape of the module housing can be arbitrary, for example circular, elliptical, square, etc., or specific to provide a signature.

Le miroir semi-transparent (R2) peut constituer la vitre de protection du module. En variante, cette vitre est ajoutée classiquement.The semi-transparent mirror (R2) can constitute the protective glass of the module. Alternatively, this window is added classically.

Dans une forme de réalisation, le pourtour extérieur du dispositif suivant l'invention peut comporter un épaulement, procurant un soulignement du contour du feu.In one embodiment, the outer periphery of the device according to the invention may comprise a shoulder, providing an underlining of the outline of the fire.

A l'extrémité du guide de lumière dénommé rideau opposée à celle qui est équipée d'au moins une LED, on peut prévoir soit un cache pour masquer à la vue la lumière s'échappant du rideau sur son pourtour, soit un élément de renvoi de préférence métallique, soit encore des chanfreins et/ou des prismes.At the end of the light guide called curtain opposite to that which is equipped with at least one LED, it is possible to provide either a cover to mask the view of the light escaping from the curtain on its periphery, or a return element preferably metal, or else chamfers and / or prisms.

L'invention sera mieux comprise, et d'autres objectifs, avantages et caractéristiques de celle-ci apparaîtront plus clairement, à la lumière de la description détaillée ci-après de modes de réalisation de l'objet de l'invention et de ses utilisations.The invention will be better understood, and other objects, advantages and characteristics thereof will appear more clearly, in the light of the detailed description below of embodiments of the object of the invention and its uses. .

Ces modes de réalisation sont fournis à titre purement illustratif et nullement limitatif, tandis que sont annexées à ladite description des planches de dessins dans lesquelles:

  • La Figure 1 représente une vue schématique en coupe d'un sous-ensemble renfermant un miroir plan 1 et un miroir plan semi-transparent 2 (T∼50%, R∼50%), ainsi que des LED 3. Dans le carré à droite, on a représenté les images lumineuses vues par un observateur situé comme indiqué.
  • La Figure 1 représente une vue schématique avec un point d'observation dans l'axe optique de l'une des LED.
  • La figure 2 représente une vue schématique avec un point d'observation différent de celui de l'axe optique de l'une des LED.
  • La Figure 3 représente une vue schématique en coupe d'un sous-ensemble renfermant un miroir sphérique 1 et un miroir plan semi-transparent 2 (T∼50%, R∼50%), ainsi que des LED 3. Dans le carré à droite, on a représenté les images lumineuses vues par un observateur situé sur l'axe optique de l'une des LED.
  • La Figure 4 représente une vue schématique conforme à la figure 3, avec un point d'observation différent de celui de l'axe optique de l'une des LED.
  • La Figure 5 représente une vue schématique en coupe d'un sous-ensemble renfermant un miroir-rideau 1 et un miroir sphérique semi-transparent 2 (T∼50%, R∼50%), ainsi que des LED 3. Dans le carré à droite, on a représenté les images lumineuses vues par un observateur situé sur l'axe de sortie de lumière.
  • La Figure 6 représente une vue schématique conforme à la figure 1, avec un point d'observation autre que celui de l'axe de la sortie de lumière.
  • Les Figures 7, 8 et 9 représentent schématiquement la variation des distances entre les images vues par l'oeil de l'observateur lorsqu'on fait varier la distance d entre les deux miroirs 1 et 2.
  • La Figure 10 représente l'ensemble des images vues par un observateur: a) avec un miroir 1 plan, et douze sources lumineuses périphériques et une source lumineuse centrale; b) avec un miroir 1 sphérique; et c) avec un miroir 1 plan et un rideau 4 interposé.
  • La Figure 11 représente schématiquement en coupe un dispositif selon l'invention, comportant un miroir plan 1 et un miroir semi-transparent 2, et des LED (non représentées) comme pour les objets des Figures 2, 4, 6 et 8, entre autres, ainsi qu'un rideau 4 dans lequel peut se diffuser la lumière émise par une LED ou un ensemble de LED 5, par exemple sous la forme d'un PCB de LED, qui est un ensemble de LED disponible sous cette dénomination et connu de l'homme du métier.
  • La Figure 12 représente schématiquement en coupe un dispositif selon l'invention, comportant un miroir plan 1 et un miroir semi-transparent 2, et des LED (non représentées) comme pour les objets des Figures 2, 4, 6 et 8, entre autres, ainsi qu'un rideau 4 dans lequel peut se diffuser la lumière émise par une LED ou un ensemble de LED 5, par exemple sous la forme d'un PCB de LED, qui est un ensemble de LED disponible sous cette dénomination et connu de l'homme du métier, tandis que le rideau 4 comporte un motif qui, lorsque le rideau est éclairé par la ou les LED 5, procure un motif « en relief ».
  • La Figure 13 représente une vue schématique en perspective d'un module selon l'invention, comportant un miroir 1, un miroir semi-transparent 2, un rideau de lumière 4 apte a être éclairé sur substantiellement toute sa surface par une LED ou un ensemble de LED approprié 5, un motif 6, la vision frontale donnant un effet de relief particulièrement attractif sur chacun des motifs. Ledit module peut ainsi procurer, sous éclairage convenable et un angle de vision approprié, une image en relief telle que celle représentée sur la Figure 13.
These embodiments are provided for purely illustrative and in no way limiting, while are appended to said description drawing boards in which:
  • The Figure 1 is a schematic sectional view of a subassembly enclosing a plane mirror 1 and a semi-transparent plane mirror 2 (T~50%, R~50%), as well as LEDs 3. In the square on the right, represented the bright images seen by an observer located as indicated.
  • The Figure 1 represents a schematic view with a point of observation in the optical axis of one of the LEDs.
  • The figure 2 represents a schematic view with a point of observation different from that of the optical axis of one of the LEDs.
  • The Figure 3 is a schematic sectional view of a subassembly enclosing a spherical mirror 1 and a semi-transparent plane mirror 2 (T~50%, R~50%), as well as LEDs 3. In the square on the right, represented the bright images seen by an observer located on the optical axis of one of the LEDs.
  • The Figure 4 represents a schematic view in accordance with the figure 3 , with a point of observation different from that of the optical axis of one of the LEDs.
  • The Figure 5 represents a schematic sectional view of a subassembly enclosing a curtain mirror 1 and a semi-transparent spherical mirror 2 (T~50%, R~50%), as well as LEDs 3. In the square on the right, the bright images seen by an observer on the light output axis are shown.
  • The Figure 6 represents a schematic view in accordance with the figure 1 , with a point of observation other than that of the axis of the light output.
  • The Figures 7, 8 and 9 schematically represent the variation of the distances between the images seen by the eye of the observer when the distance d between the two mirrors 1 and 2 is varied.
  • The Figure 10 represents all the images seen by an observer: a) with a mirror 1 plane, and 12 peripheral light sources and a central light source; b) with a spherical mirror 1; and c) with a mirror 1 plane and a curtain 4 interposed.
  • The Figure 11 schematically shows in section a device according to the invention, comprising a plane mirror 1 and a semi-transparent mirror 2, and LEDs (not shown) as for the objects of the Figures 2 , 4 , 6 and 8 , among others, and a curtain 4 in which can be diffused the light emitted by an LED or a set of LEDs 5, for example in the form of an LED PCB, which is a set of LEDs available under this name and known to those skilled in the art.
  • The Figure 12 schematically shows in section a device according to the invention, comprising a plane mirror 1 and a semi-transparent mirror 2, and LEDs (not shown) as for the objects of the Figures 2 , 4 , 6 and 8 , among others, and a curtain 4 in which can be diffused the light emitted by an LED or a set of LEDs 5, for example in the form of an LED PCB, which is a set of LEDs available under this name and known to those skilled in the art, while the curtain 4 has a pattern which, when the curtain is illuminated by the LED or 5, provides a pattern "in relief".
  • The Figure 13 represents a schematic perspective view of a module according to the invention, comprising a mirror 1, a semi-transparent mirror 2, a light curtain 4 capable of being illuminated over substantially its entire surface by a LED or a set of appropriate LEDs 5, a pattern 6, the frontal vision giving a particularly attractive relief effect on each of the patterns. Said module can thus provide, under suitable illumination and an appropriate viewing angle, a relief image such as that shown in FIG. Figure 13 .

En référence aux dessins ainsi succinctement décrits, en particulier aux Figures 11 à 13 qui l'illustrent mais ne le limitent en aucune manière, le dispositif selon l'invention comporte un miroir 1 et un miroir semi-transparent 2, et il comprend des LED 3 convenablement alimentées et dirigées pour émettre dans la direction perpendiculaire au plan moyen du miroir 1 des rayons lumineux qui sont pour partie réfléchis par le miroir semi-transparent 2 et pour partie transmis à travers celui-ci.With reference to the drawings thus briefly described, in particular to Figures 11 to 13 which illustrate it but do not limit it in any way, the device according to the invention comprises a mirror 1 and a semi-transparent mirror 2, and it comprises LEDs 3 suitably powered and directed to emit in the direction perpendicular to the mean plane of the mirror 1 of the light rays which are partially reflected by the semitransparent mirror 2 and partly transmitted therethrough.

D'après la figure 2, on voit qu'on perd ∼50% à chaque réflexion sur le miroir semi-transparent.According to figure 2 we see that we lose ~50% at each reflection on the semi-transparent mirror.

D'après la figure 1, lorsque l'observateur est dans l'axe de la LED ou à l'infini, il ne voit pas de multiples réflexions.According to figure 1 when the observer is in the axis of the LED or at infinity, he does not see multiple reflections.

D'après les figures 3 et 4, l'effet de profondeur change avec l'angle de vue; les réflexions multiples sont plus ou moins espacées.According to the Figures 3 and 4 , the effect of depth changes with the angle of view; multiple reflections are more or less spaced.

D'après la figure 3, on voit le même effet de profondeur que selon la figure 4. Mais lorsque l'observateur est dans l'axe de la LED ou à l'infini, il voit encore de multiples réflexions grâce au miroir 1 sphérique.According to figure 3 , we see the same effect of depth that according to the figure 4 . But when the observer is in the axis of the LED or at infinity, he still sees multiple reflections thanks to the spherical mirror 1.

D'après les figures 5 et 6, l'effet de profondeur change avec l'angle de vue; les réflexions multiples sont plus ou moins espacées.According to the Figures 5 and 6 , the effect of depth changes with the angle of view; multiple reflections are more or less spaced.

D'après les figures 7, 8 et 9, on voit que la distance entre les images perçues par l'observateur diminue lorsque la distance d entre les deux miroirs est réduite.According to the Figures 7, 8 and 9 it can be seen that the distance between the images perceived by the observer decreases when the distance d between the two mirrors is reduced.

Quant à la figure 10 (a, b et c), elle visualise de façon spectaculaire les effets obtenus avec les dispositifs respectifs mis en oeuvre (voir plus haut).About the figure 10 (a, b and c), it displays dramatically the effects obtained with the respective devices implemented (see above).

L'ensemble complet selon l'invention, dont les exemples illustratifs sont procurés par les Figures 11 à 13 annexées, permet de rendre visibles, lorsqu'ils sont éclairés par la ou les LED diffusant leur lumière dans ledit rideau, des motifs choisis à dessein et intégrés/appliqués dans et/ou ledit rideau.The complete set according to the invention, the illustrative examples of which are provided by the Figures 11 to 13 appended, allows to make visible, when illuminated by the LED or diffusing their light in said curtain, patterns chosen on purpose and integrated / applied in and / or said curtain.

Dans une forme de réalisation alternative, une ou plusieurs des LED 3 peuvent être inexistantes ou commutables, de manière à réserver l'effets d'infini aux images des motifs portés par le rideau 4.In an alternative embodiment, one or more of the LEDs 3 may be non-existent or switchable, so as to reserve the effects of infinity on the images of the patterns carried by the curtain 4.

Le dispositif selon l'invention procure un nombre infini d'images dont seules 7 à 12 en moyenne sont visibles par l'oeil humain.The device according to the invention provides an infinite number of images of which only 7 to 12 on average are visible by the human eye.

Dans le dispositif selon l'invention, la source lumineuse constituée par la ou les LED éclairant l'écran et diffusant dans celui-ci une lumière répartie, permet de visualiser un ou plusieurs motifs gravés sur cet écran ou inclus dans cet écran. C'est la lumière ainsi diffusée qui est ensuite soumise aux réflexions successives du miroir 1 et/ou des miroirs semi-transparents 2 qui procure une image du(des) motif(s) susdit(s) ayant une attractivité remarquable, avec un effet d'infini.In the device according to the invention, the light source constituted by the LED or LEDs illuminating the screen and diffusing therein a distributed light, allows viewing one or more patterns engraved on this screen or included in this screen. It is the light thus diffused which is then subjected to the successive reflections of the mirror 1 and / or the semi-transparent mirrors 2 which provides an image of the aforesaid pattern (s) having a remarkable attractiveness, with an effect infinite.

Le dispositif selon l'invention est principalement destiné à faire office de lanterne et/ou feu de position et/ou feu de stop et/ou feu clignotant, etc., selon les cas aussi bien à l'arrière qu'à l'avant des véhicules. Il peut également équiper un dispositif d'éclairage extérieur tel qu'un répétiteur latéral d'un véhicule.The device according to the invention is mainly intended to serve as a lantern and / or position light and / or stop light and / or flashing light, etc., depending on the case both at the rear and at the front. cars. It can also equip an external lighting device such as a side repeater of a vehicle.

Claims (15)

  1. Signalling light for a motor vehicle, comprising at least one light source of the LED or other type, said device comprising an optical assembly of at least one first reflector (RI) consisting of a mirror (1) and of at least one second reflector (R2) consisting of a semi-transparent mirror (2) characterised in that said device comprises a curtain diffuser (DI) made of a transparent material (4) in which a light emitted by at least one LED (3, 5) is diffused (3, 5),
    the mirror (1), the semi-transparent mirror 2) and the curtain (4) having their planes or their mid-planes substantially mutually parallel, with the light transmitted and/or reflected by said optical assembly being transmitted and visible by the observer through the opposite face of said second reflector (R2) from that turned towards the other elements of said optical assembly, and
    said curtain diffuser (DI) forming a lighting sub-assembly located in the space between the mirror (1) and the semi-transparent mirror (2), and substantially consisting of a transparent optical material (4) and of at least one light source of the LED type (5) arranged to emit light rays propagating inside the thickness of said transparent optical material.
  2. Device according to claim 1, characterised in that the second reflector (R2) and as an option the curtain diffuser (DI) are arranged before the LED or LEDs (3) directed to emit in a direction perpendicular to the mid-plane of the mirror (1) light rays which are in part reflected by the semi-transparent mirror (2) and in part transmitted through the latter,
  3. Device according to claim 1 or 2, characterised in that said transparent optical material forming a curtain (DI) is constituted of a plate comprising at least one bilateral extended bulge, with a substantially circular overall straight section, having its central longitudinal axis in the mid-plane of said plaque and able to form a light guide, and at least one LED placed at at least one of the ends of said light guide, with its main axis orthogonal to the longitudinal axis of said light guide.
  4. Device according to one of claims 1 to 3, characterised in that the planes or mid-planes respectively of the mirror (1) and of the semi-transparent mirror or mirrors (2) are substantially mutually parallel.
  5. Device according to one of claims 1 to 4, characterised in that the planes or mid-planes respectively of the mirror (1) and of the semi-transparent mirror or mirrors (2) form between them an angle substantially between 1 and 3 angle degrees.
  6. Device according to one of claims 1 to 5, characterised in that the optical assembly is arranged perpendicularly or substantially perpendicularly to the optical axis of the beam emitted by the LED or LEDs.
  7. Device according to one of claims 1 to 6, characterised in that the mirror (RI) is itself a semi-transparent mirror identical to or different from that which constitutes the second reflector (R2), and in this case the LEDs (3) are provided with reflectors.
  8. Device according to one of claims 1 to 7, characterised in that it comprises a curtain (DI) confounded with the mirror (RI).
  9. Device according to one of claims 1 to 8, characterised in that the mirror (RI) has variable curvatures, including between different zones of the same mirror.
  10. Device according to one of claims 1 to 9, characterised in that at least one LED is arranged in the central position in the mirror (RI) and, in combination with a curtain (DI) itself confounded with the mirror (RI), procures a relief effect or inverted infinity effect, in particular appreciated for marking the lighting of a stop light.
  11. Device according to one of claims 1 to 10, characterised in that is arranged between the two mirrors (RI) and (R2) an additional optical system providing a parallel light source to the others, in order to procure a signalling light.
  12. Device according to any of claims 1 to 11, characterised in that at least one of the mirrors (RI) and (R2) is spherical.
  13. Module for signalling and/or lighting for the outside or inside of a motor vehicle, characterised in that it comprises at least one device according to any of claims 1 to 12.
  14. Module according to claim 13, characterised in that the average direction of emission of the LEDs (3) is parallel to the optical axis of the module.
  15. Module according to claim 13, characterised in that is arranged between the two mirrors (RI) and (R2) an additional optical system providing a light source parallel to the others, in order to procure a signalling light.
EP11709388.0A 2010-03-19 2011-03-18 Device for procuring an infinity effect for a motor vehicle signalling light Active EP2547955B1 (en)

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FR1001084A FR2957652B1 (en) 2010-03-19 2010-03-19 DEVICE FOR OBTAINING AN INFINITE EFFECT OF A MOTOR VEHICLE SIGNALING FIRE
PCT/EP2011/054145 WO2011113937A1 (en) 2010-03-19 2011-03-18 Device for procuring an infinity effect for a motor vehicle signalling light

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EP2547955A1 (en) 2013-01-23
CN102939498A (en) 2013-02-20
US20130010487A1 (en) 2013-01-10
FR2957652A1 (en) 2011-09-23
KR20130018782A (en) 2013-02-25
US9121564B2 (en) 2015-09-01
FR2957652B1 (en) 2013-05-31
JP2013522851A (en) 2013-06-13

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