EP1987284A1 - Optical unit having coupled illumination functions - Google Patents

Optical unit having coupled illumination functions

Info

Publication number
EP1987284A1
EP1987284A1 EP07731644A EP07731644A EP1987284A1 EP 1987284 A1 EP1987284 A1 EP 1987284A1 EP 07731644 A EP07731644 A EP 07731644A EP 07731644 A EP07731644 A EP 07731644A EP 1987284 A1 EP1987284 A1 EP 1987284A1
Authority
EP
European Patent Office
Prior art keywords
light
reflector
light source
emitted
optical unit
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.)
Withdrawn
Application number
EP07731644A
Other languages
German (de)
French (fr)
Inventor
Renaud Jacquot
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1987284A1 publication Critical patent/EP1987284A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
    • 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]

Definitions

  • the present invention relates to an optical unit with illumination functions coupled, especially, but not exclusively, for signaling lights of motor vehicles.
  • Lighting and signaling devices usually include a function reflector.
  • function is meant, for example for the optical blocks of a motor vehicle, the anti-fog function, the stop function, the flashing function, the recoil function, etc.
  • Each fire exerting a determined function comprises a light source (a light bulb or a light emitting diode) and a reflector.
  • Each light is designed to emit light at a predetermined light range and, for the most part, regulated.
  • the regulation makes it possible to couple the lantern function with the stop function or with the anti-fog function provided that a two-filament lamp is used. In both cases, the same reflector provides two different functions.
  • the same optical unit generally accommodates several different functions, and therefore several lights, knowing that each light comprises a light source and a reflector (with the exception of the two cases mentioned above).
  • each light comprises a light source and a reflector (with the exception of the two cases mentioned above).
  • FR 2 829 225 published on 7-3-2003 comprises at least one main light and at least one secondary light, each of them having a light source and a reflector.
  • the secondary light source is located behind the main light reflector.
  • the reflector of the main light then has openings through which passes the light emitted by the secondary light source.
  • the secondary fire is positioned so that it does not enter any place in the rays of the main light.
  • a utility certificate FR 2 829 561 which relates to a vehicle optical unit which comprises an upper lamp and a lower lamp (for example a rear position lamp). Between the light source of the upper fire and the window through which the light emerges is an element which deflects the light. Note in Figure 1 of this document that the light beams emitted by the two lights do not interfere with each other, the functions of the upper and lower lights being well separated.
  • the present invention aims to enlarge the perceptible area of illumination of an illuminating function by using the light emitted by the light source of this illuminating function by the reflector of at least one other illuminating function.
  • part of the luminous flux emitted by a light source is directed towards one or more reflectors which are not associated with the light source emitting said flux.
  • one or more prisms that can be positioned on the ice by which the light is emitted or a screen whose inner surface (light source side) is reflective or an opening in the partition separating the two reflectors. For a given function, an illumination zone is thus obtained which is approximately doubled.
  • the recoil and flashing functions are mutually used: in the case where the flashing function illuminates the reflector of the recoil function, the noticeable zone of activation is practically doubled by the use of the illuminating range of the flashing functions and decline. Conversely, when the recoil function is activated, the flashing zone is lit in the same way by the recoil. The amount of light coming from a light source and reflected by a reflector not directly associated with this source light is low compared to the amount of total light emitted by the light source. Thus, when the two lamps are activated simultaneously, the illuminating surfaces do not appear to be doubled since the additional light received by a reflector is much smaller than the light emitted directly by the light source present in the reflector.
  • the present invention relates to an optical block comprising at least a first light having a first light source associated with a first reflector, a second light comprising a second light source associated with a second reflector and a transparent glass for the output of the light.
  • the optical block further comprises means placed between the ice and at least one of the light sources for directing a portion of the light emitted by said light source to the reflector associated with the other light source.
  • said means direct a portion of the light emitted by the first light source to the second reflector and a portion of the light emitted by the second light source to the first reflector.
  • said means reflect a portion of the light of one of said lights towards the reflector of the other light.
  • Said means may for example be constituted by a screen pierced with apertures allowing part of the light emitted by at least one of the light sources to pass through, the surface of the screen placed on the side of said light source being reflective and reflective of light. other part of the light emitted by the light source towards the reflector associated with the other light source.
  • the screen can advantageously be placed between the light sources and the ice, part of the light emitted by the first a light source passing through at least a portion of said openings, the other portion of the emitted light being reflected to the second reflector, and a portion of the light emitted by the second light source passing through at least a portion said openings, the other part of the emitted light being reflected towards the first reflector.
  • Said openings may be circular holes drilled in the screen and regularly spaced.
  • the latter When the lights have a common wall, the latter is not in contact with the screen so as to let light, emitted by one of the light sources and reflected by the screen, to the reflector associated with the other light source.
  • the optical block comprises a prism system for directing a portion of the light emitted by the light source from at least one of the lights to the reflector of the other light.
  • This prism system can for example be placed on the inner wall of the ice.
  • a wall separates the reflectors from the first and second lamps and this wall comprises an opening for the passage of the light emitted by the light source from at least one of the lamps towards the reflector of the other traffic light.
  • the lights may be car lights, including traffic lights, such as a reversing light and a flashing light.
  • FIG. 2 is an exploded and simplified view of the embodiment of FIG. 1.
  • the optical unit 10 shown in FIGS. 1 and 2 comprises two adjacent lamps 20 and 40 (located next to one another).
  • the fire 20 may be for example a flashing light (flashing function) and the fire 40 a reversing light (recoil function).
  • the light 20 comprises a light source 22 held by conventional means 24 in an opening 26 of a reflector 28.
  • the light 40 comprises a light source 42 held by conventional means 44 in an opening 46 of a Reflector 48.
  • the reflectors 28 and 48 each comprise a reflecting surface which reflects a large part of the light emitted by the light source 22 or 42 associated therewith (the light source 22 or 42 being associated with the reflector respectively 28 or 48).
  • the light sources 22 and 42 are represented in the form of lamps, but they could be constituted by light-emitting diodes (usually designated by the abbreviation LED). Reflectors 28 and 48 meet to form a common wall or edge 12.
  • a transparent glass 14 closes the optical unit 10 so as to protect the components of the lights 20 and 40 from the external environment, such as rain, dust, gravel, etc.
  • the light emitted by the bulb 22 and reflected by the associated reflector 28 is focused to form a light beam 30 emitted in an illumination range 32 through the glass 14.
  • the light emitted by the lamp 42 and reflected by the associated reflector 48 is focused to form a light beam emitted in an illumination range 52 through the lens 14.
  • means are used to direct a portion of the light emitted by a lamp to the reflector associated with the other lamp. In FIGS.
  • these means take the form of a screen 60 having openings 62 for passing a large portion of the light emitted by the lamps 22 and 42 and reflected by the reflectors 28 and 48, respectively.
  • common 12 of the two reflectors 28 and 48 is spaced from the screen 14 so that light can pass from the cavity formed by a reflector to the other cavity formed by the other reflector.
  • the inner surface of the screen 60 (surface turned towards the interior of the optical unit 10 and thus facing the lamps 22 and 42) is reflective, which makes it possible to direct part of the light emitted by a lamp towards the reflector of the lamp. other lamp.
  • a light ray 64 emitted by the lamp 22 is reflected by the screen 60 (light beam 66) towards the reflector 48, which in turn reflects it to give rise to a light ray 68 which from the optical block through one of the apertures 62.
  • light from the light 40 may be reflected by the screen 60 to be directed to the reflector 28 of the light 20.
  • the apertures 62 may be, as in the example of Figures 1 and 2, circular holes regularly spaced. The percentage of light reflected by the screen is easily determined by choosing the perforated surface of the screen relative to the total area, and therefore by choosing the number and the surface of the openings 62.
  • the screen 60 advantageously takes the form of transparent ice 14, but other forms are possible.
  • the fire 20 is therefore more visible.
  • the light coming from one of the lights and directed towards the other light illuminates it with a limited light power, since this light is not focused.
  • the means for directing the light can take a form other than a reflective screen.
  • a prism system of at least one prism can be used. This system could be placed between the two reflectors 28 and 48, for example near the edge 12 or glued on the transparent glass 14.
  • These means could also be constituted by a passage made in the common partition or in the adjacent partitions of the two reflectors 28 and 48 allowing the passage of light from one fire to another.
  • the screen, the prism system and the passage can be used separately or in combination.
  • the described embodiment has two lights. It is obvious that more than two lights can be used without departing from the scope of the present invention.
  • part of the light emitted by the central light could be directed towards one or both of the side lights and some of the light emitted by one or both side lights can be directed towards the central light.
  • the invention applies to functions other than the recoil and flashing functions, for example stop, lantern and fog functions.
  • the embodiment described concerns the automotive industry, but the invention applies generally to traffic lights regardless of the field of application.

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

Abstract

The subject of the invention is an optical unit comprising at least a first lamp (20) comprising a first light source (22) associated with a first reflector (28), a second lamp (40) comprising a second light source (42) associated with a second reflector (48) and a transparent lens (14) for outputting the light. According to the invention, the optical unit furthermore includes means (60) placed between the lens (14) and at least one (22) of the light sources, the means (60) directing a portion (64) of the light emitted by the light source (22) onto the reflector (48) associated with the other light source (42). The invention applies for example to the automobile industry.

Description

BLOC OPTIQUE A FONCTIONS D'ECLAIREMENT COUPLEES OPTICAL BLOCK HAS ILLUMINATED FUNCTIONS
La présente invention concerne un bloc optique à fonctions d'éclairement couplées, tout particulièrement, mais non exclusivement, pour des feux de signalisation de véhicules automobiles.The present invention relates to an optical unit with illumination functions coupled, especially, but not exclusively, for signaling lights of motor vehicles.
Les dispositifs d'éclairage et de signalisation comportent habituellement un réflecteur par fonction. On entend par fonction, par exemple pour les blocs optiques d'un véhicule automobile, la fonction anti-brouillard, la fonction stop, la fonction clignotant, la fonction recul, etc. Chaque feu exerçant une fonction déterminée comporte une source lumineuse (une ampoule électrique ou une diode électroluminescente) et un réflecteur. Chaque feu est conçu pour émettre de la lumière selon une plage lumineuse prédéterminée et, la plupart du temps, réglementée. Cependant, la réglementation permet de coupler la fonction lanterne avec la fonction stop ou avec la fonction anti-brouillard à condition d'utiliser une lampe à deux filaments. Dans ces deux cas, le même réflecteur assure deux fonctions différentes.Lighting and signaling devices usually include a function reflector. By function is meant, for example for the optical blocks of a motor vehicle, the anti-fog function, the stop function, the flashing function, the recoil function, etc. Each fire exerting a determined function comprises a light source (a light bulb or a light emitting diode) and a reflector. Each light is designed to emit light at a predetermined light range and, for the most part, regulated. However, the regulation makes it possible to couple the lantern function with the stop function or with the anti-fog function provided that a two-filament lamp is used. In both cases, the same reflector provides two different functions.
Un même bloc optique accueille en général plusieurs fonctions différentes, donc plusieurs feux, sachant que chaque feu comporte une source lumineuse et un réflecteur (à l'exception des deux cas mentionnés précédemment). Par exemple, le bloc optique décrit dans la demande de brevetThe same optical unit generally accommodates several different functions, and therefore several lights, knowing that each light comprises a light source and a reflector (with the exception of the two cases mentioned above). For example, the optical block described in the patent application
FR 2 829 225 publiée le 7-3-2003 comporte au moins un feu principal et au moins un feu secondaire, chacun d'eux ayant une source lumineuse et un réflecteur. La source lumineuse du feu secondaire est située derrière le réflecteur du feu principal. Le réflecteur du feu principal comporte alors des ouvertures à travers lesquels passe la lumière émise par la source lumineuse secondaire. Le feu secondaire est positionné pour ne pénétrer à aucun endroit dans la marche des rayons du feu principal.FR 2 829 225 published on 7-3-2003 comprises at least one main light and at least one secondary light, each of them having a light source and a reflector. The secondary light source is located behind the main light reflector. The reflector of the main light then has openings through which passes the light emitted by the secondary light source. The secondary fire is positioned so that it does not enter any place in the rays of the main light.
Un autre exemple est donné dans la demande de certificat d'utilité FR 2 829 561 qui concerne un bloc optique pour véhicules qui comporte un feu supérieur et un feu inférieur (par exemple un feu de position arrière). Entre la source de lumière du feu supérieur et la vitre par laquelle sort la lumière est disposé un élément qui dévie la lumière. On remarque sur la figure 1 de ce document que les faisceaux lumineux émis par les deux feux n'interfèrent pas entre eux, les fonctions des feux supérieur et inférieur étant bien séparées.Another example is given in the application for a utility certificate FR 2 829 561 which relates to a vehicle optical unit which comprises an upper lamp and a lower lamp (for example a rear position lamp). Between the light source of the upper fire and the window through which the light emerges is an element which deflects the light. Note in Figure 1 of this document that the light beams emitted by the two lights do not interfere with each other, the functions of the upper and lower lights being well separated.
La présente invention vise à agrandir la zone perceptible d'éclairement d'une fonction éclairante en utilisant la lumière émise par la source lumineuse de cette fonction éclairante par le réflecteur d'au moins une autre fonction éclairante. A cette fin, une partie du flux lumineux émis par une source lumineuse est dirigée vers un ou plusieurs réflecteurs qui ne sont pas associés à la source lumineuse émettant ledit flux. A titre d'exemples, pour diriger la lumière on peut utiliser un ou plusieurs prismes qui peuvent être positionnés sur la glace par laquelle la lumière est émise ou un écran dont la surface interne (coté source lumineuse) est réfléchissante ou encore une ouverture dans la cloison séparant les deux réflecteurs. On obtient ainsi pour une fonction déterminée une zone d'éclairement qui est approximativement doublée. Par exemple, si les fonctions recul et clignotant sont mutuellement utilisées : dans le cas où la fonction clignotant éclaire le réflecteur de la fonction recul, la zone perceptible d'activation se trouve pratiquement doublée par l'utilisation de la plage éclairante des fonctions clignotant et recul. Inversement, lors de l'activation de la fonction recul, la zone clignotant est éclairée de la même façon par le recul. La quantité de lumière issue d'une source lumineuse et réfléchie par un réflecteur non directement associé à cette source lumineuse est faible par rapport à la quantité de lumière totale émise par la source lumineuse. Ainsi lorsque les deux feux sont activés simultanément, les plages éclairantes ne paraissent pas doublées puisque la lumière additionnelle reçue par un réflecteur est bien plus faible que la lumière émise directement par la source lumineuse présente dans le réflecteur.The present invention aims to enlarge the perceptible area of illumination of an illuminating function by using the light emitted by the light source of this illuminating function by the reflector of at least one other illuminating function. For this purpose, part of the luminous flux emitted by a light source is directed towards one or more reflectors which are not associated with the light source emitting said flux. For example, to direct the light can be used one or more prisms that can be positioned on the ice by which the light is emitted or a screen whose inner surface (light source side) is reflective or an opening in the partition separating the two reflectors. For a given function, an illumination zone is thus obtained which is approximately doubled. For example, if the recoil and flashing functions are mutually used: in the case where the flashing function illuminates the reflector of the recoil function, the noticeable zone of activation is practically doubled by the use of the illuminating range of the flashing functions and decline. Conversely, when the recoil function is activated, the flashing zone is lit in the same way by the recoil. The amount of light coming from a light source and reflected by a reflector not directly associated with this source light is low compared to the amount of total light emitted by the light source. Thus, when the two lamps are activated simultaneously, the illuminating surfaces do not appear to be doubled since the additional light received by a reflector is much smaller than the light emitted directly by the light source present in the reflector.
De façon plus précise, la présente invention concerne un bloc optique comprenant au moins un premier feu comportant une première source lumineuse associée à un premier réflecteur, un deuxième feu comportant une deuxième source lumineuse associée à un deuxième réflecteur et une glace transparente pour la sortie de la lumière. Selon l'invention, le bloc optique comporte en outre des moyens placés entre la glace et au moins l'une des sources lumineuses pour diriger une partie de la lumière émise par ladite source lumineuse vers le réflecteur associé à l'autre source lumineuse.More specifically, the present invention relates to an optical block comprising at least a first light having a first light source associated with a first reflector, a second light comprising a second light source associated with a second reflector and a transparent glass for the output of the light. According to the invention, the optical block further comprises means placed between the ice and at least one of the light sources for directing a portion of the light emitted by said light source to the reflector associated with the other light source.
Selon un mode de réalisation préféré, lesdits moyens dirigent une partie de la lumière émise par la première source lumineuse vers le deuxième réflecteur et une partie de la lumière émise par la deuxième source lumineuse vers le premier réflecteur.According to a preferred embodiment, said means direct a portion of the light emitted by the first light source to the second reflector and a portion of the light emitted by the second light source to the first reflector.
Selon un mode de réalisation possible, lesdits moyens réfléchissent une partie de la lumière de l'un desdits feux vers le réflecteur de l'autre feu. Lesdits moyens peuvent par exemple être constitués par un écran percé d'ouvertures laissant passer une partie de la lumière émise par au moins l'une des sources lumineuses, la surface de l'écran placée du coté de ladite source lumineuse étant réfléchissante et réfléchissant l'autre partie de la lumière émise par la source lumineuse vers le réflecteur associé à l'autre source lumineuse. L'écran peut avantageusement être placé entre les sources lumineuses et la glace, une partie de la lumière émise par la première source lumineuse passant au travers d'au moins une partie desdites ouvertures, l'autre partie de la lumière émise étant réfléchie vers le deuxième réflecteur, et une partie de la lumière émise par la deuxième source lumineuse passant au travers d'au moins une partie desdites ouvertures, l'autre partie de la lumière émise étant réfléchie vers le premier réflecteur.According to a possible embodiment, said means reflect a portion of the light of one of said lights towards the reflector of the other light. Said means may for example be constituted by a screen pierced with apertures allowing part of the light emitted by at least one of the light sources to pass through, the surface of the screen placed on the side of said light source being reflective and reflective of light. other part of the light emitted by the light source towards the reflector associated with the other light source. The screen can advantageously be placed between the light sources and the ice, part of the light emitted by the first a light source passing through at least a portion of said openings, the other portion of the emitted light being reflected to the second reflector, and a portion of the light emitted by the second light source passing through at least a portion said openings, the other part of the emitted light being reflected towards the first reflector.
Lesdites ouvertures peuvent être des trous circulaires percés dans l'écran et régulièrement espacés.Said openings may be circular holes drilled in the screen and regularly spaced.
Lorsque les feux ont une paroi commune, cette dernière n'est pas en contact avec l'écran de façon à laisser passer la lumière, émise par l'une des sources lumineuses et réfléchie par l'écran, vers le réflecteur associé à l'autre source lumineuse.When the lights have a common wall, the latter is not in contact with the screen so as to let light, emitted by one of the light sources and reflected by the screen, to the reflector associated with the other light source.
Selon un autre mode de réalisation, le bloc optique comporte un système à prisme pour diriger une partie de la lumière émise par la source lumineuse d'au moins lun des feux vers le réflecteur de l'autre feu. Ce système à prisme peut par exemple être placé sur la paroi interne de la glace.According to another embodiment, the optical block comprises a prism system for directing a portion of the light emitted by the light source from at least one of the lights to the reflector of the other light. This prism system can for example be placed on the inner wall of the ice.
Selon un autre mode de réalisation, une paroi sépare les réflecteurs des premier et deuxième feux et cette paroi comporte une ouverture pour le passage de la lumière émise par la source lumineuse d'au moins l'un des feux vers le réflecteur de l'autre feu.According to another embodiment, a wall separates the reflectors from the first and second lamps and this wall comprises an opening for the passage of the light emitted by the light source from at least one of the lamps towards the reflector of the other traffic light.
Les feux peuvent être des feux de voitures automobiles, notamment des feux de signalisation, tel que par exemple un feu de recul et un feu clignotant.The lights may be car lights, including traffic lights, such as a reversing light and a flashing light.
D'autres avantages et caractéristiques de l'invention apparaîtront au cours de la description qui suit d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif, en référence aux dessins annexés et sur lesquels : - la figure 1 représente un mode de réalisation de l'invention vu de dessus et en coupe sensiblement horizontale; etOther advantages and features of the invention will become apparent from the following description of an embodiment of the invention, given by way of non-limiting example, with reference to the accompanying drawings and in which: - Figure 1 shows an embodiment of the invention seen from above and in substantially horizontal section; and
- la figure 2 est une vue éclatée et simplifiée du mode de réalisation de la figure 1. Le bloc optique 10 représenté sur les figures 1 et 2 comportent deux feux adjacents 20 et 40 (situés l'un à coté de l'autre) d'un dispositif de signalisation d'un véhicule automobile, le feu 20 pouvant être par exemple un feu clignotant (fonction clignotant) et le feu 40 un feu de recul (fonction recul). Le feu 20 comporte une source de lumière 22 maintenue par des moyens classiques 24 dans une ouverture 26 d'un réflecteur 28. De même, le feu 40 comporte une source de lumière 42 maintenue par des moyens classiques 44 dans une ouverture 46 d'un réflecteur 48. Les réflecteurs 28 et 48 comportent chacun une surface réfléchissante qui réfléchit une grande partie de la lumière émise par la source lumineuse 22 ou 42 qui lui est associée (la source lumineuse 22 ou 42 étant associée au réflecteur respectivement 28 ou 48). Les sources lumineuses 22 et 42 sont représentées sous forme de lampes, mais elles pourraient être constituées par des diodes électroluminescentes (désignées habituellement par l'abréviation LED). Les réflecteurs 28 et 48 se rejoignent pour former une paroi ou une arête commune 12.FIG. 2 is an exploded and simplified view of the embodiment of FIG. 1. The optical unit 10 shown in FIGS. 1 and 2 comprises two adjacent lamps 20 and 40 (located next to one another). a signaling device of a motor vehicle, the fire 20 may be for example a flashing light (flashing function) and the fire 40 a reversing light (recoil function). The light 20 comprises a light source 22 held by conventional means 24 in an opening 26 of a reflector 28. Similarly, the light 40 comprises a light source 42 held by conventional means 44 in an opening 46 of a Reflector 48. The reflectors 28 and 48 each comprise a reflecting surface which reflects a large part of the light emitted by the light source 22 or 42 associated therewith (the light source 22 or 42 being associated with the reflector respectively 28 or 48). The light sources 22 and 42 are represented in the form of lamps, but they could be constituted by light-emitting diodes (usually designated by the abbreviation LED). Reflectors 28 and 48 meet to form a common wall or edge 12.
Une glace transparente 14 ferme le bloc optique 10 de façon à protéger les composants des feux 20 et 40 de l'environnement extérieur, tel que la pluie, la poussière, les graviers, etc. La lumière émise par l'ampoule 22 et réfléchie par le réflecteur associé 28 est focalisée pour former un faisceau lumineux 30 émis dans une plage d'éclairement 32 à travers la glace 14. De même, la lumière émise par la lampe 42 et réfléchie par le réflecteur associé 48 est focalisée pour former un faisceau lumineux émis dans une plage d'éclairement 52 à travers la glace 14. Selon l'invention, des moyens permettent de diriger une partie de la lumière émise par une lampe vers le réflecteur associé à l'autre lampe. Sur les figures 1 et 2, ces moyens prennent la forme d'un écran 60 ayant des ouvertures 62 pour laisser passer une partie importante de la lumière émise par les lampes 22 et 42 et réfléchie par les réflecteurs respectivement 28 et 48. L'arête commune 12 des deux réflecteurs 28 et 48 est espacé de l'écran 14 de sorte que la lumière peut passer de la cavité formée par un réflecteur à l'autre cavité formée par l'autre réflecteur. La surface interne de l'écran 60 (surface tournée vers l'intérieur du bloc optique 10 et donc en regard des lampes 22 et 42) est réfléchissante ce qui permet de diriger une partie de la lumière émise par une lampe vers le réflecteur de l'autre lampe. Ainsi, sur les figures 1 et 2, un rayon lumineux 64 émis par la lampe 22 est réfléchi par l'écran 60 (rayon lumineux 66) vers le réflecteur 48, lequel le réfléchit à son tour pour donner naissance à un rayon lumineux 68 qui sort du bloc optique à travers l'une 70 des ouvertures 62. Inversement, de la lumière provenant du feu 40 peut être réfléchie par l'écran 60 pour être dirigée vers le réflecteur 28 du feu 20. Les ouvertures 62 peuvent être, comme dans l'exemple des figures 1 et 2, des trous circulaires régulièrement espacés. Le pourcentage de lumière réfléchie par l'écran est aisément déterminé en choisissant la surface ajourée de l'écran par rapport à la surface totale, et donc en choisissant le nombre et la surface des ouvertures 62. L'écran 60 épouse avantageusement la forme de la glace transparente 14, mais d'autres formes sont possibles.A transparent glass 14 closes the optical unit 10 so as to protect the components of the lights 20 and 40 from the external environment, such as rain, dust, gravel, etc. The light emitted by the bulb 22 and reflected by the associated reflector 28 is focused to form a light beam 30 emitted in an illumination range 32 through the glass 14. Similarly, the light emitted by the lamp 42 and reflected by the associated reflector 48 is focused to form a light beam emitted in an illumination range 52 through the lens 14. According to the invention, means are used to direct a portion of the light emitted by a lamp to the reflector associated with the other lamp. In FIGS. 1 and 2, these means take the form of a screen 60 having openings 62 for passing a large portion of the light emitted by the lamps 22 and 42 and reflected by the reflectors 28 and 48, respectively. common 12 of the two reflectors 28 and 48 is spaced from the screen 14 so that light can pass from the cavity formed by a reflector to the other cavity formed by the other reflector. The inner surface of the screen 60 (surface turned towards the interior of the optical unit 10 and thus facing the lamps 22 and 42) is reflective, which makes it possible to direct part of the light emitted by a lamp towards the reflector of the lamp. other lamp. Thus, in FIGS. 1 and 2, a light ray 64 emitted by the lamp 22 is reflected by the screen 60 (light beam 66) towards the reflector 48, which in turn reflects it to give rise to a light ray 68 which from the optical block through one of the apertures 62. Conversely, light from the light 40 may be reflected by the screen 60 to be directed to the reflector 28 of the light 20. The apertures 62 may be, as in the example of Figures 1 and 2, circular holes regularly spaced. The percentage of light reflected by the screen is easily determined by choosing the perforated surface of the screen relative to the total area, and therefore by choosing the number and the surface of the openings 62. The screen 60 advantageously takes the form of transparent ice 14, but other forms are possible.
Lorsqu'un feu fonctionne, le feu 20 par exemple, la plage éclairante est pratiquement doublée : à la plage 32 s'ajoute la plageWhen a fire works, the fire 20 for example, the illuminating surface is almost doubled: at the beach 32 is added the beach
52. Le feu 20 est donc plus visible. Cependant, la lumière issue de l'un des feux et dirigée vers l'autre feu illumine celui-ci avec une puissance lumineuse limitée, puisque cette lumière n'est pas focalisée. Ceci permet d'obtenir un feu d'une fonction déterminée (par exemple fonction recul) qui est allumé avec une autre fonction (par exemple fonction clignotant) tout en restant en deçà des valeurs définissant la plage éclairante de cet autre fonction (fonction clignotant).52. The fire 20 is therefore more visible. However, the light coming from one of the lights and directed towards the other light illuminates it with a limited light power, since this light is not focused. This makes it possible to obtain a light of a certain function (for example a reversing function) which is lit with another function (for example a flashing function) while remaining within the values defining the illuminating surface of this other function (flashing function). .
D'autres modes de réalisation que ceux décrits et représentés peuvent être conçus par l'homme du métier sans sortir du cadre de la présente invention. Ainsi les moyens pour diriger la lumière peuvent prendre une autre forme qu'un écran réfléchissant. Par exemple, un système à prisme constitué d'au moins un prisme peut être utilisé. Ce système pourrait être placé entre les deux réflecteurs 28 et 48, par exemple à proximité de l'arête 12 ou collé sur la glace transparente 14. Ces moyens pourraient aussi être constitués par un passage pratiqué dans la cloison commune ou dans les cloisons adjacentes des deux réflecteurs 28 et 48 permettant le passage de la lumière d'un feu à l'autre. L'écran, le système à prisme et le passage peuvent être utilisés séparément ou en combinaison. Le mode de réalisation décrit comporte deux feux. Il est évident que plus de deux feux peuvent être utilisés sans sortir du cadre de la présente invention. Par exemple, avec un bloc optique comportant un feu central encadré par deux feux latéraux, une partie de la lumière émise par le feu central pourrait être dirigée vers l'un ou les deux feux latéraux et une partie de la lumière émise par l'un ou les deux feux latéraux peut être dirigée vers le feu central.Embodiments other than those described and shown may be devised by those skilled in the art without departing from the scope of the present invention. Thus the means for directing the light can take a form other than a reflective screen. For example, a prism system of at least one prism can be used. This system could be placed between the two reflectors 28 and 48, for example near the edge 12 or glued on the transparent glass 14. These means could also be constituted by a passage made in the common partition or in the adjacent partitions of the two reflectors 28 and 48 allowing the passage of light from one fire to another. The screen, the prism system and the passage can be used separately or in combination. The described embodiment has two lights. It is obvious that more than two lights can be used without departing from the scope of the present invention. For example, with an optical block having a central light flanked by two side lights, part of the light emitted by the central light could be directed towards one or both of the side lights and some of the light emitted by one or both side lights can be directed towards the central light.
L'invention s'applique à d'autres fonctions que les fonctions recul et clignotant, par exemples aux fonctions stop, lanterne et antibrouillard. De même, le mode de réalisation décrit concerne l'industrie automobile, mais l'invention s'applique de façon générale aux feux de signalisation quelque soit le domaine d'application. The invention applies to functions other than the recoil and flashing functions, for example stop, lantern and fog functions. Similarly, the embodiment described concerns the automotive industry, but the invention applies generally to traffic lights regardless of the field of application.

Claims

REVENDICATIONS
1. Bloc optique comprenant au moins un premier feu (20) comportant une première source lumineuse (22) associée à un premier réflecteur (28), un deuxième feu (40) comportant une deuxième source lumineuse (42) associée à un deuxième réflecteur (48) et une glace transparente (14) pour la sortie de la lumière, caractérisé en ce qu'il comporte en outre des moyens (60) placés entre ladite glace (14) et au moins l'une (22) desdites sources lumineuses, lesdits moyens (60) réfléchissant une partie de la lumière émise par ladite première source lumineuse (20) vers ledit deuxième réflecteur (48) et une partie de la lumière émise par ladite deuxième source lumineuse (40) vers ledit premier réflecteur (28).An optical unit comprising at least a first lamp (20) having a first light source (22) associated with a first reflector (28), a second lamp (40) having a second light source (42) associated with a second reflector ( 48) and a transparent lens (14) for the light output, characterized in that it further comprises means (60) placed between said lens (14) and at least one (22) of said light sources, said means (60) reflecting a portion of light emitted by said first light source (20) to said second reflector (48) and a portion of light emitted by said second light source (40) to said first reflector (28).
2. Bloc optique selon la revendication 1 caractérisé en ce que lesdits moyens sont constitués par un écran (60) percé d'ouvertures (62) laissant passer une partie de la lumière émise par au moins l'une desdites sources lumineuses (22, 42), la surface dudit écran placée du coté de ladite source lumineuse étant réfléchissante et réfléchissant l'autre partie de la lumière émise par ladite source lumineuse vers le réflecteur associé à l'autre source lumineuse.2. An optical unit according to claim 1 characterized in that said means are constituted by a screen (60) pierced with openings (62) passing a portion of the light emitted by at least one of said light sources (22, 42 ), the surface of said screen placed on the side of said light source being reflective and reflecting the other part of the light emitted by said light source to the reflector associated with the other light source.
3. Bloc optique selon la revendication 2 caractérisé en ce que ledit écran (60) est placé entre lesdites sources lumineuses (22, 42) et ladite glace (14), une partie de la lumière émise par ladite première source lumineuse (22) passant au travers d'au moins une partie desdites ouvertures (62), l'autre partie de la lumière émise étant réfléchie vers le deuxième réflecteur (48), et une partie de la lumière émise par ladite deuxième source lumineuse (42) passant au travers d'au moins une partie desdites ouvertures (62), l'autre partie de la lumière émise étant réfléchie vers le premier réflecteur (28). 3. An optical unit according to claim 2 characterized in that said screen (60) is placed between said light sources (22, 42) and said mirror (14), a part of the light emitted by said first light source (22) passing through at least a portion of said openings (62), the other portion of the emitted light being reflected to the second reflector (48), and a portion of light emitted by said second light source (42) passing through at least a part of said openings (62), the other part of the emitted light being reflected towards the first reflector (28).
4. Bloc optique selon l'une des revendications 2 et 3 caractérisé en ce que lesdites ouvertures sont des trous circulaires (62) percés dans ledit écran (60) et régulièrement espacés.4. Optical block according to one of claims 2 and 3 characterized in that said openings are circular holes (62) pierced in said screen (60) and regularly spaced.
5. Bloc optique selon l'une des revendications 2 à 4 caractérisé en ce que ledit écran (60) épouse la forme d'au moins une partie de la surface interne de ladite glace (14).5. Optical block according to one of claims 2 to 4 characterized in that said screen (60) conforms to the shape of at least a portion of the inner surface of said ice (14).
6. Bloc optique selon l'une des revendications précédentes caractérisé en ce que lesdits feux ont une paroi commune (12) non en contact avec ledit écran (60) de façon à laisser passer la lumière, émise par l'une desdites sources lumineuses et réfléchie par ledit écran, vers le réflecteur associé à l'autre source lumineuse.6. An optical unit according to one of the preceding claims characterized in that said lamps have a common wall (12) not in contact with said screen (60) so as to let light, emitted by one of said light sources and reflected by said screen, to the reflector associated with the other light source.
7. Bloc optique selon la revendication 1 caractérisé en ce que lesdits moyens comportent un système à prisme pour diriger une partie de la lumière émise par la source lumineuse d'au moins lun desdits feux vers le réflecteur de l'autre feu.7. An optical unit according to claim 1 characterized in that said means comprise a prism system for directing a portion of the light emitted by the light source of at least one of said lights to the reflector of the other light.
8. Bloc optique selon la revendication 7 caractérisé en ce que ledit système à prisme est placé sur la paroi interne de ladite glace. 8. Optical block according to claim 7 characterized in that said prism system is placed on the inner wall of said ice.
9. Bloc optique selon la revendication 1 caractérisé en ce qu'une paroi sépare les réflecteurs des premier et deuxième feux, ladite paroi comportant une ouverture pour le passage de la lumière émise par la source lumineuse d'au moins l'un desdits feux vers le réflecteur de l'autre feu. 9. An optical unit according to claim 1 characterized in that a wall separates the reflectors of the first and second lights, said wall having an opening for the passage of light emitted by the light source of at least one of said lights towards the reflector of the other fire.
10. Bloc optique selon l'une des revendications précédentes caractérisé en ce que lesdits feux (20, 40) sont des feux de voitures automobiles, notamment des feux de signalisation.10. An optical unit according to one of the preceding claims characterized in that said lamps (20, 40) are motor vehicle lights, including traffic lights.
11. Bloc optique selon la revendication 10 caractérisé en ce que l'un desdits feux est un feu de recul (40), l'autre feu étant un clignotant (20). 11. An optical unit according to claim 10 characterized in that one of said lights is a reversing light (40), the other light being a blinker (20).
EP07731644A 2006-02-22 2007-02-19 Optical unit having coupled illumination functions Withdrawn EP1987284A1 (en)

Applications Claiming Priority (2)

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FR0650615A FR2897672B1 (en) 2006-02-22 2006-02-22 OPTICAL BLOCK HAS ILLUMINATED FUNCTIONS
PCT/FR2007/050821 WO2007096559A1 (en) 2006-02-22 2007-02-19 Optical unit having coupled illumination functions

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WO2007096559A1 (en) 2007-08-30
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FR2897672B1 (en) 2008-07-04
CN101389896B (en) 2012-12-05
BRPI0706911A2 (en) 2011-04-12

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