EP1806531B1 - Multifunctional elliptical headlamp device with additional optical element - Google Patents

Multifunctional elliptical headlamp device with additional optical element Download PDF

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Publication number
EP1806531B1
EP1806531B1 EP06292012.9A EP06292012A EP1806531B1 EP 1806531 B1 EP1806531 B1 EP 1806531B1 EP 06292012 A EP06292012 A EP 06292012A EP 1806531 B1 EP1806531 B1 EP 1806531B1
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EP
European Patent Office
Prior art keywords
shield
light
headlight device
rotation
multifunctional
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.)
Not-in-force
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EP06292012.9A
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German (de)
French (fr)
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EP1806531A1 (en
Inventor
Jean-Luc Meyrenaud
Guillaume Tronquet
Benoît Reiss
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Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP1806531A1 publication Critical patent/EP1806531A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/698Shaft-shaped screens rotating along its longitudinal axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10Arrangement or contour of the emitted light
    • F21W2102/13Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the present invention relates to a multifunctional elliptical projector device for switching between several positions each performing a specific lighting function, for example a code function, a road function, and a highway function or a bad weather function.
  • Each lighting function is associated in particular with a cut line that is specific to it, or the absence of a cut line, said cut line being obtained by means of a cache intercepting part of the light rays emitted by a source luminous device of the projector considered.
  • the object of the invention is essentially to propose a solution for obtaining, thanks to the presence of at least one additional optical element, at least one of the lighting functions available by means of the multifunctional projector device considered, with optical performances improved by compared to the performances presented so far by the existing multi-function projectors.
  • FR 2 847 655 an elliptical-type projector, in which a support is pivotally mounted about an axis formed on a plate secured to the reflector, and a cover is pivotally mounted about a second axis formed on the support.
  • the cache is double and has two wings each with a cut edge.
  • Such an arrangement is intended to provide a projector capable of emitting at least three beams, including a road beam and two cut-off beams.
  • an elliptical type projector for transmitting a code-type passing beam, comprising a light source, a reflector, a lens, a cover between the reflector and the lens, and a reflecting element located under the optical axis of the reflector and between the cover and the lens, the reflecting element deflecting a portion of the light reflected by the reflector so that after passing through the lens, an area in front of the vehicle above the cutoff is illuminated.
  • Such an arrangement aims to add above the cut the maximum light permitted by the regulations, so as to avoid a clear light / dark limit, uncomfortable for the driver, and even dangerous.
  • additional optical element designates an element, integrated in a mask, having at least one reflecting surface capable of redirecting an optically active edge of a flap of said mask over an optically active edge. part of the light rays emitted towards said flap by the light source of the projector device considered.
  • additional optical element can also be designated by the term "folding".
  • bifunctional projector which combines the functions of low beam and long range lights: for this purpose, it is possible for example to have inside the bifunctional projector a removable cover, constituted for example by a metal flap, which can be placed on command of a first position in which it does not obscure the light signal produced by the light source of the projector - the range of the projector then corresponding to that of the high beam - to a second position in which it obscures a portion of the light signal produced by the light source of the projector, the range of the projector is thus limited to that of the dipped beam.
  • a removable cover constituted for example by a metal flap
  • the invention will be more particularly described, by way of example only, in the case where the multifunctional projector device considered makes it possible particularly to obtain the motorway function or the bad weather function by means of a cache comprising an element additional optics.
  • the multifunctional projector device considered makes it possible particularly to obtain the motorway function or the bad weather function by means of a cache comprising an element additional optics.
  • a first solution consists in the use, in each code-type projector device, of a plate, approximately disk-shaped, in rotation on itself, the axis of rotation being horizontal and parallel to the optical axis of the device. projector device.
  • optical axis of the projector device refers generally to the maximum illumination direction for the projector device considered.
  • the periphery of the disc is not perfectly smooth; it has a set of irregularities, each of the irregularities making it possible to obtain a light beam corresponding to one of the desired functions when the irregularity considered is brought, by rotation of the disk, facing the light source of the projector device considered.
  • the second solution consists in the use, in the elliptical-type projector device 100, of a multifunction mask 103 - or multifunction mask - consisting essentially of a support rotating about itself about an axis of rotation 104; the rotational movement is controlled by an actuator 105 which may comprise a DC motor, a solenoid, a stepper motor or any other known actuation system or combination thereof.
  • the axis of rotation 104 is horizontal and perpendicular to the optical axis of the projector device, said support maintaining a plurality of caches each having a determined cut to generate a specific cut line.
  • the lateral surface of the multifunction cover constituted by the ends of the covers held by the rotating support, is not perfectly smooth; it has a set of cutouts, each of the cutouts for obtaining a light beam corresponding to one of the desired functions when the cut concerned is brought, by rotation of the multifunction cover, facing the light source of the projector device considered.
  • the road function is obtained when no cache comes to intercept the light rays emitted by the light source.
  • the rotational support maintains a first cache, dedicated to the production of a code-type light beam, and a second cache, dedicated to the production of a light beam of the motorway or bad weather.
  • An object of the invention is to respond in particular to this problem concerning the photometric performance of certain lighting functions.
  • a solution for producing a multifunctional projector device ie at least bifunctional, which produces at least one light beam whose photometric performance is improved compared to those measured in the projectors devices of the state of the art performing the same functions.
  • a multifunctional projector device of the type of those having a multifunctional cover consisting essentially of a support in rotation on itself, with a horizontal axis of rotation and perpendicular to the optical axis of the projector device, said support holding a plurality of caches each having a determined cut to generate a specific cut line.
  • the figure 2-A shows the multifunction occulter 204 in a position, designated in this example as initial position, allowing the realization of the code-type beam.
  • the Figure 2-B shows the multifunctional concealer in a position, designated in this example as the first position, allowing the realization of the motorway type beam or bad weather.
  • the invention will be more particularly illustrated in the context of a trifunctioning projector device, of the type of that shown in FIGS. Figures 2-A to 2-D , making it possible to obtain a road-type beam, a code-type beam, and a motorway-type or bad weather beam, but having certain improved photometric performance.
  • the invention is however generalizable without difficulty to any multifunctional projector device whose multifunction occulteur is rotated along a horizontal axis and perpendicular to the optical axis of the device considered, and at least one component is completed by an additional optical element.
  • the figure 3 shows a projector device 300, of the type of the projector device 200 shown in FIGS. Figures 2-A to 2-D , having the same main elements as the projector device 200, but in which the invention is implemented; the multifunctional concealer 204 has been replaced by a multifunctional concealer 204 ', the main difference between these two concealers residing in the fact that the first cover 207 is now articulated with respect to the support element 205.
  • the multifunctional occluder 204 is brought into a new position, here designated as the second position, in which the light beam produced corresponds to a road-type beam, no cache no longer intercepting the light rays 210.
  • the first mask 207 adopts a new posture P2, designated here as a second posture with respect to a first posture P1 in which it was in particular when the multifunctional occluder 204 was in the first position shown in FIG. Figure 2-B .
  • the posture P2 differs from the posture P1 in particular by the fact that the first cover is folded towards the first axis of rotation 211, so as to limit its bulk due to the presence of the folder 209.
  • the folding operation is carried out, as will be detailed later, while the multifunction occulteur 204 'is brought from the first position to the second position.
  • the transition from the first posture P1 to the second posture P2 is performed during other transition movements of the occluder 204 ', the posture P2 must always be reached at least when the road-type beam must be realized.
  • the figure 4-A shows a first 400 example of cache 207 in the first position represented in Figure 2-B .
  • the cover 400 consists of a shutter 401, generally vertical, which, when placed in its optically active position, conceals a part of the light beam coming from the reflector, and an additional optical element 402, generally horizontal, of which at least the upper face 403 is reflective in order to add in the beam passing through the lens a portion of the rays which, without the presence of this reflecting surface, would have been intercepted by the shutter, and thus lost.
  • the flap 401 and the folder 402 are joined: an upper edge 404 of the flap 401 corresponds to a front edge 405 of the folder 402, no light ray can thus filter between these two elements. Any undesirable light leakage that may cause dazzling is thus prevented.
  • the figure 4-B shows in more detail the profile 406 of the front edge 405, which predominantly determines the shape of the generated light beam.
  • the surface of the folder 402 is then a horizontal extrusion of the shape of the leading edge 405 from said front edge 405 'to the light source.
  • Profile 406 consists of the joining of a lower horizontal segment 407 and an upper horizontal segment 408, connected by an oblique segment 409, generally central.
  • the height of the segment 407 is determined to avoid glare of the doubled conductors through their exterior mirror, whose approximate position 410 is symbolized by a crossed circle.
  • the difference in level between segment 407 and segment 408 is of the order of 0.48 millimeters.
  • the figure 5-A shows a second example 400 'of the cache 207 in the first position shown in FIG. Figure 2-B .
  • the cover 400 ' consists of a flap 401', generally vertical, which, when placed in its optically active position, conceals a part of the light beam coming from the reflector, and an additional optical element 402 ', globally horizontal, at least the upper face 403 'is reflective in order to add in the beam passing through the lens part of the rays which, without the presence of this reflecting surface, would have been intercepted by the cache, and thus lost.
  • the flap 401 'and the folder 402' are joined: an upper edge 404 'of the flap 401' corresponds to a front edge 405 'of the folder 402', no light ray can thus filter between these two elements. Any undesirable light leakage that may cause dazzling is thus prevented.
  • the figure 5-B shows in more detail the profile 406 'of the front edge 405', which determines predominantly the shape of the generated light beam.
  • the surface of the folder 402 ' is then a horizontal extrusion of the shape of the leading edge 405' from said front edge 405 'to the light source.
  • the profile 406 ' is an optimized form comprising a recess 411' around the maximum intensity to increase the range of the light beam of highway fire type or bad weather; the recess 411 'is restricted in width to avoid any glare of the doubled conductors through their external rearview mirror, whose approximate position 410' is symbolized by a crossed circle.
  • the profile 406 'thus consists of the union of an intermediate horizontal segment 407', a lower horizontal segment 408 '- interconnected by means of a first oblique segment 412 forming a 45 degree angle with the lower segment 408 '- and an upper horizontal segment 409' connected to the lower horizontal segment 408 'by a second oblique segment 413' forming an angle of 40 degrees with the lower segment 408 '.
  • the difference in level between the upper segment 409 'and the lower segment 408' is of the order of 0.8 millimeters, and the difference in level between the intermediate segment 407 'and the lower segment 408' is of the order of 0.33 millimeters.
  • the lower segment 408 ' is about 1.05 millimeters.
  • FIGS. 6-A and 6-B respectively show a first view and a second view of the example 400 'of the cache 207 in its final embodiment 600 designed to be held on the support 205 of the multifunctional occulteur 204'.
  • a first fixing pin 601 and a second fixing pin 602 are arranged on either side of the cover 400 '.
  • a vertical rear edge 605 of the folder 402 ' is advantageously reflective, thermal problems being thus solved.
  • FIGS. 7-A, 7-B, 7-C and 7-D show the multifunctional occulteur 204 ' complete, that is to say ready to be mounted in the final projector device, in a first situation corresponding to a first step of the operation of folding the first cache 207.
  • FIGS. 8-A, 8-B, 8-C and 8-D show the multifunctional occulteur 204 'complete in a second situation corresponding to a second step of the operation of folding the first cache 207.
  • FIGS. 9-A, 9-B, 9-C and 9-D show the multifunctional occulteur 204 'complete in a third situation corresponding to a third step of the folding operation of the first cache 207.
  • the multifunctional concealer cooperates with a guide element 705, or guide, secured to a housing 706, for example the housing of the actuator, itself integral with the reflector or the lens.
  • the multifunction occulter 204 When switching to the route function ( Figure 9-A to 9-C ), the multifunction occulter 204 'continues its rotation about the first axis 211 beyond the position corresponding to the realization of the motorway beam or bad weather; the guide lug 604 of the first cover 400 'then comes into contact with the guide 705.
  • the latter in particular by the presence of a rounded section 707 in contact with which will evolve an end 708 of the guide lug 604, is designed such that the rotational movement imposed on the multifunctional concealer 204 'by the actuator 105 causes the first cover 400' to tilt relative to the second cover 206 about the secondary rotation axis 703.
  • the first cover 400 ' is thus folded towards the support 205 in a direction of rotation 709 opposite the direction 710 of the rotation, which causes said folding, the multifunction occulteur 204' around the first axis of rotation 211.
  • Such a configuration corresponds to the second posture P2 of the first cache 400 '
  • the actuator is dimensioned so as to be able to drive and hold in position the multifunctional occluder 204 'taking into consideration the additional forces due to the presence of the spring 704 and the frictional forces due to the contact between the guide lug 604 and the guide 705.
  • the spring 704 is for its part dimensioned to ensure the return of the first cover 400 'in its first posture P1 during the return of the multifunctional concealer 204' in the position corresponding to the code function or the highway function or bad weather.
  • the second cover 206 is made of metal material, stamped cut sheet metal for example and is overmolded in thermoplastic material resistant to temperature, which allows to integrate in the molded part in particular a connection with the actuator - such a link may for example consist of a gear wheel of a reduction system.
  • the first cover 400 is advantageously made by thermoplastic injection followed by an aluminizing step; the production of the first cache of ceramic material is also possible, the advantage of such an embodiment residing in the insulating nature of this material.

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

Description

La présente invention a pour objet un dispositif projecteur elliptique multifonctions, permettant de commuter entre plusieurs positions réalisant chacune une fonction d'éclairage spécifique, par exemple une fonction code, une fonction route, et une fonction autoroute ou une fonction mauvais temps. Chaque fonction d'éclairage est associée notamment à une ligne de coupure qui lui est spécifique, ou à l'absence de ligne de coupure, ladite ligne de coupure étant obtenue au moyen d'un cache interceptant une partie des rayons lumineux émis par une source lumineuse du dispositif projecteur considéré. L'invention a essentiellement pour but de proposer une solution pour obtenir, grâce à la présence d'au moins un élément optique additionnel, au moins une des fonctions d'éclairage disponibles au moyen du dispositif projecteur multifonctions considéré, avec des performances optiques améliorées par rapport aux performances présentées jusqu'à présent par les dispositifs projecteurs multifonctions existant.The present invention relates to a multifunctional elliptical projector device for switching between several positions each performing a specific lighting function, for example a code function, a road function, and a highway function or a bad weather function. Each lighting function is associated in particular with a cut line that is specific to it, or the absence of a cut line, said cut line being obtained by means of a cache intercepting part of the light rays emitted by a source luminous device of the projector considered. The object of the invention is essentially to propose a solution for obtaining, thanks to the presence of at least one additional optical element, at least one of the lighting functions available by means of the multifunctional projector device considered, with optical performances improved by compared to the performances presented so far by the existing multi-function projectors.

On connaît par exemple de FR 2 847 655 un projecteur de type elliptique, dans lequel un support est monté à pivotement autour d'un axe formé sur une platine solidaire du réflecteur, et un cache est monté à pivotement autour d'un second axe formé sur le support. Le cache est double et comporte deux ailes portant chacune un bord de coupure. Une telle disposition a pour but de proposer un projecteur pouvant émettre au moins trois faisceaux, dont un faisceau route et deux faisceaux à coupure.For example, we know FR 2 847 655 an elliptical-type projector, in which a support is pivotally mounted about an axis formed on a plate secured to the reflector, and a cover is pivotally mounted about a second axis formed on the support. The cache is double and has two wings each with a cut edge. Such an arrangement is intended to provide a projector capable of emitting at least three beams, including a road beam and two cut-off beams.

On connaît par ailleurs de EP 0 624 753 un projecteur de type elliptique pour l'émission d'un faisceau de croisement de type code, comprenant une source lumineuse, un réflecteur, une lentille, un cache entre le réflecteur et la lentille, et un élément réfléchissant situé sous l'axe optique du réflecteur et entre le cache et la lentille, l'élément réfléchissant déviant une partie de la lumière réfléchie par le réflecteur pour qu'après le passage à travers la lentille, une zone en avant du véhicule au-dessus de la coupure soit éclairée. Une telle disposition a pour but de rajouter au dessus de la coupure le maximum de lumière autorisé par les réglementations, de manière à éviter une limite clair/obscur nette, inconfortable pour le conducteur, et même dangereuse.We also know from EP 0 624 753 an elliptical type projector for transmitting a code-type passing beam, comprising a light source, a reflector, a lens, a cover between the reflector and the lens, and a reflecting element located under the optical axis of the reflector and between the cover and the lens, the reflecting element deflecting a portion of the light reflected by the reflector so that after passing through the lens, an area in front of the vehicle above the cutoff is illuminated. Such an arrangement aims to add above the cut the maximum light permitted by the regulations, so as to avoid a clear light / dark limit, uncomfortable for the driver, and even dangerous.

Dans la suite du document, on désigne par l'expression "élément optique additionnel" un élément, intégré dans un cache, présentant au moins une surface réfléchissante apte à rediriger au-dessus d'un bord optiquement actif d'un volet dudit cache une partie des rayons lumineux émis en direction dudit volet par la source lumineuse du dispositif projecteur considéré. Par convention, on peut également désigner l'élément optique additionnel par le terme "plieuse".In the remainder of the document, the expression "additional optical element" designates an element, integrated in a mask, having at least one reflecting surface capable of redirecting an optically active edge of a flap of said mask over an optically active edge. part of the light rays emitted towards said flap by the light source of the projector device considered. By convention, the additional optical element can also be designated by the term "folding".

Le domaine de l'invention est, d'une façon générale, celui des projecteurs de véhicule automobile. Dans ce domaine, on connaît différents types de dispositifs projecteurs, parmi lesquels on trouve essentiellement :

  • des feux de position, d'intensité et de portée faible;
  • des feux de croisement, ou codes, d'intensité plus forte et de portée sur la route avoisinant 70 mètres, qui sont utilisés essentiellement la nuit et dont la répartition du faisceau lumineux est telle qu'elle permet de ne pas éblouir le conducteur d'un véhicule croisé ; les feux de croisement réalisent une fonction code ; on parle ici d'un faisceau lumineux de type code ;
  • des feux de route longue portée, et des feux de complément de type longue portée, dont la zone de vision sur la route avoisine 200 mètres, et qui doivent être éteints lorsque l'on croise un autre véhicule afin de ne pas éblouir son conducteur ; les feux de route réalisent une fonction route ; on parle ici d'un faisceau lumineux de type route;
  • des feux anti-brouillard.
The field of the invention is, in general, that of motor vehicle headlights. In this field, various types of projectors devices are known, among which we find essentially:
  • position, intensity and low range lights;
  • low beam, or codes, of greater intensity and range on the road of about 70 meters, which are used mainly at night and whose distribution of the light beam is such that it does not dazzle the driver of a crossover vehicle; the low beam lights perform a code function; we are talking about a code-type light beam;
  • long-range headlamps, and long-range supplement lights, whose vision zone on the road is approximately 200 meters, and which must be extinguished when crossing another vehicle so as not to dazzle its driver; the high beam achieves a road function; we are talking here about a light beam of road type;
  • fog lights.

Par ailleurs, on connaît un type de projecteur elliptique perfectionné, appelé projecteur bifonctions, qui cumule les fonctions de feux de croisement et de feux longue portée : à cet effet, on peut par exemple disposer à l'intérieur du projecteur bifonctions un cache amovible, constitué par exemple d'un volet métallique, pouvant passer sur commande d'une première position dans laquelle il n'occulte pas le signal lumineux produit par la source lumineuse du projecteur - la portée du projecteur correspondant alors à celle des feux de route - à une deuxième position dans laquelle il occulte une partie du signal lumineux produit par la source lumineuse du projecteur, la portée du projecteur étant ainsi limitée à celle des feux de croisement.Furthermore, there is a known type of elliptical floodlight, called bifunctional projector, which combines the functions of low beam and long range lights: for this purpose, it is possible for example to have inside the bifunctional projector a removable cover, constituted for example by a metal flap, which can be placed on command of a first position in which it does not obscure the light signal produced by the light source of the projector - the range of the projector then corresponding to that of the high beam - to a second position in which it obscures a portion of the light signal produced by the light source of the projector, the range of the projector is thus limited to that of the dipped beam.

Les dispositifs projecteurs qui viennent d'être évoqués, plus particulièrement ceux qui sont utilisés comme feux de croisement, produisent des faisceaux lumineux qui sont perfectibles lorsque ces dispositifs projecteurs sont utilisés dans certaines conditions. On a ainsi récemment élaboré de nouvelles fonctions, désignées comme fonctions élaborées et regroupées sous le nom d'AFS (abréviation pour « Advanced Frontlighting System » en anglais), qui proposent notamment d'autres types de faisceaux. Il s'agit notamment

  • de la fonction dite BL (Bending Light en anglais pour lumière virage), qui peut se décomposer en une fonction dite DBL (Dynamic Bending Light en anglais pour lumière virage mobile) et une fonction dite FBL (Fixed Bending Light en anglais pour lumière virage fixe). La fonction DBL permet de modifier l'orientation d'un faisceau lumineux produit par une source lumineuse, de telle sorte que lorsque le véhicule aborde un virage, la route soit éclairée de façon optimale. La fonction FBL a pour vocation d'éclairer progressivement le bas-côté de la route lorsque le véhicule effectue un virage ; à cet effet, on prévoit une source lumineuse supplémentaire qui vient compléter progressivement les feux de croisement ou de route lors de la négociation d'un virage ;
  • de la fonction dite Town Light en anglais, pour feu de ville. Cette fonction assure l'élargissement d'un faisceau de type feu de croisement tout en diminuant légèrement sa portée ;
  • de la fonction dite Motorway Light en anglais, pour feu d'autoroute, réalisant la fonction autoroute. Cette fonction assure une augmentation de la portée d'un feu de croisement en concentrant le flux lumineux du feu de croisement au niveau de l'axe optique du dispositif projecteur considéré ; on parle ici d'un faisceau lumineux de type autoroute ;
  • de la fonction dite Overhead Light en anglais, pour feu surélevé. Cette fonction assure une modification d'un faisceau de feu de croisement de telle sorte que des portiques situés en hauteur sont éclairés de façon satisfaisante au moyen des feux de croisement ;
  • une fonction dite AWL (Adverse Weather Light en anglais, pour feu de mauvais temps). Cette fonction assure une modification d'un faisceau de feu de croisement de telle sorte que le conducteur d'un véhicule circulant en sens inverse n'est pas ébloui par un reflet sur la route mouillée de la lumière émise par les projecteurs remplissant cette fonction. Cette fonction pour mauvais temps assure une diminution de la lumière proche d'un feu de croisement, susceptible d'éblouir les conducteurs de véhicules circulant en sens inverse, et une augmentation de la portée du même feu de croisement au niveau de l'axe optique du dispositif projecteur considéré.
The projectors devices that have just been mentioned, more particularly those that are used as low beam, produce light beams that are perfectible when these devices projectors are used under certain conditions. Thus, new functions have recently been developed, referred to as functions developed and grouped under the name of AFS (abbreviation for "Advanced Frontlighting System"), which notably propose other types of beams. These include
  • the function called BL (Bending Light in English for light bend), which can be broken down into a function called DBL (Dynamic Bending Light in English for light bend mobile) and a function called FBL (Fixed Bending Light in English for light bend fixed ). The DBL function makes it possible to modify the orientation of a light beam produced by a light source, so that when the vehicle approaches a turn, the road is illuminated optimally. The purpose of the FBL function is to gradually illuminate the side of the road when the vehicle is turning; to this end, there is provided an additional light source which gradually complements the low beam or road when negotiating a turn;
  • of the so-called Town Light function in English, for town fire. This function ensures the widening of a beam type dipped beam while slightly decreasing its range;
  • of the so-called Motorway Light function in English, for highway lights, realizing the motorway function. This function ensures an increase in the range of a dipped beam by concentrating the dipped beam's luminous flux at the level of the dipped beam. the optical axis of the projector device considered; we are talking here about a light beam of motorway type;
  • of the function called Overhead Light in English, for raised fire. This function ensures a modification of a beam of low beam so that gantries located at height are illuminated satisfactorily by means of dipped beam;
  • a function called AWL (Adverse Weather Light in English, for fire of bad weather). This function ensures a modification of a beam of passing beam so that the driver of a vehicle traveling in the opposite direction is not dazzled by a reflection on the wet road of the light emitted by the projectors performing this function. This function for bad weather ensures a decrease in light near a dipped beam, likely to dazzle the drivers of vehicles traveling in the opposite direction, and an increase in the range of the same dipped beam at the optical axis. the projector device considered.

L'invention sera plus particulièrement décrite, à titre d'exemple uniquement, dans le cas où le dispositif projecteur multifonctions considéré permet l'obtention notamment de la fonction d'autoroute ou de la fonction mauvais temps au moyen d'un cache comportant un élément optique additionnel. Elle peut cependant s'appliquer à tout dispositif projecteur multifonctions permettant notamment l'obtention d'au moins un des types de feux qui viennent d'être cités au moyen d'un cache comportant un élément optique additionnel.The invention will be more particularly described, by way of example only, in the case where the multifunctional projector device considered makes it possible particularly to obtain the motorway function or the bad weather function by means of a cache comprising an element additional optics. However, it can be applied to any multifunctional projector device making it possible in particular to obtain at least one of the types of lamps that have just been mentioned by means of a cover comprising an additional optical element.

Afin de proposer, au moyen d'un unique dispositif projecteur, une fonction code, une fonction route, et au moins une fonction élaborée, par exemple la fonction autoroute, on a proposé, dans l'état de la technique, différentes solutions.In order to propose, by means of a single projector device, a code function, a route function, and at least one elaborate function, for example the motorway function, various solutions have been proposed in the state of the art.

Une première solution consiste en l'utilisation, dans chaque dispositif projecteur de type code, d'une plaque, approximativement en forme de disque, en rotation sur elle-même, l'axe de rotation étant horizontal et parallèle à l'axe optique du dispositif projecteur. Par axe optique du dispositif projecteur, on désigne, d'une façon générale, la direction d'éclairage maximal pour le dispositif projecteur considéré. La périphérie du disque n'est pas parfaitement lisse ; elle présente un ensemble d'irrégularités, chacune des irrégularités permettant d'obtenir un faisceau lumineux correspondant à une des fonctions recherchées lorsque l'irrégularité considérée est amenée, par rotation du disque, face à la source lumineuse du dispositif projecteur considéré.A first solution consists in the use, in each code-type projector device, of a plate, approximately disk-shaped, in rotation on itself, the axis of rotation being horizontal and parallel to the optical axis of the device. projector device. By optical axis of the projector device, refers generally to the maximum illumination direction for the projector device considered. The periphery of the disc is not perfectly smooth; it has a set of irregularities, each of the irregularities making it possible to obtain a light beam corresponding to one of the desired functions when the irregularity considered is brought, by rotation of the disk, facing the light source of the projector device considered.

Une deuxième solution peut revêtir les traits d'un dispositif projecteur 100 du type de celui représenté à la figure 1. Le dispositif projecteur comporte notamment :

  • un réflecteur 101 dont la forme géométrique de la paroi réfléchissante est proche d'un demi ellipsoïde ;
  • une source lumineuse non représentée, disposée au sein du réflecteur 101, par exemple une lampe à décharge positionnée au niveau du premier foyer du réflecteur 101 ;
  • un élément dioptrique 102, par exemple une lentille convergente, positionnée au second foyer du réflecteur 101.
A second solution may take the form of a projector device 100 of the type shown in FIG. figure 1 . The projector device comprises in particular:
  • a reflector 101 whose geometric shape of the reflecting wall is close to a half ellipsoid;
  • a light source, not shown, disposed within the reflector 101, for example a discharge lamp positioned at the first focus of the reflector 101;
  • a dioptric element 102, for example a convergent lens, positioned at the second focus of the reflector 101.

La deuxième solution consiste en l'utilisation, dans le dispositif projecteur 100 de type elliptique, d'un cache multifonctions 103 - ou occulteur multifonctions - constitué essentiellement d'un support en rotation sur lui-même autour d'un axe de rotation 104; le mouvement de rotation est commandé par un actionneur 105 pouvant comprendre un moteur à courant continu, un solénoïde, un moteur pas à pas ou tout autre système d'actionnement connu ou de leur combinaison. L'axe de rotation 104 est horizontal et perpendiculaire à l'axe optique du dispositif projecteur, ledit support maintenant une pluralité de caches présentant chacun une découpe déterminée pour générer une ligne de coupure spécifique.The second solution consists in the use, in the elliptical-type projector device 100, of a multifunction mask 103 - or multifunction mask - consisting essentially of a support rotating about itself about an axis of rotation 104; the rotational movement is controlled by an actuator 105 which may comprise a DC motor, a solenoid, a stepper motor or any other known actuation system or combination thereof. The axis of rotation 104 is horizontal and perpendicular to the optical axis of the projector device, said support maintaining a plurality of caches each having a determined cut to generate a specific cut line.

La surface latérale du cache multifonctions, constituée par les extrémités des caches maintenus par le support en rotation, n'est ainsi pas parfaitement lisse ; elle présente un ensemble de découpes, chacune des découpes permettant d'obtenir un faisceau lumineux correspondant à une des fonctions souhaitées lorsque la découpe considérée est amenée, par rotation du cache multifonctions, face à la source lumineuse du dispositif projecteur considéré. Dans ce type de dispositifs projecteurs, la fonction route est obtenue lorsque aucun cache ne vient intercepter les rayons lumineux émis par la source lumineuse. Dans un exemple particulier de réalisation, le support en rotation maintient un premier cache, dédié à la réalisation d'un faisceau lumineux de type code, et un deuxième cache, dédié à la réalisation d'un faisceau lumineux de type d'autoroute ou de mauvais temps. La présente invention sera essentiellement décrite au moyen d'un exemple correspondant à un perfectionnement du dispositif projecteur 100.The lateral surface of the multifunction cover, constituted by the ends of the covers held by the rotating support, is not perfectly smooth; it has a set of cutouts, each of the cutouts for obtaining a light beam corresponding to one of the desired functions when the cut concerned is brought, by rotation of the multifunction cover, facing the light source of the projector device considered. In this type of projectors devices, the road function is obtained when no cache comes to intercept the light rays emitted by the light source. In a particular exemplary embodiment, the rotational support maintains a first cache, dedicated to the production of a code-type light beam, and a second cache, dedicated to the production of a light beam of the motorway or bad weather. The present invention will be essentially described by means of an example corresponding to an improvement of the projector device 100.

De telles solutions permettent donc d'obtenir, avec chaque dispositif projecteur dans lesquels elles sont implantées, une pluralité de faisceaux lumineux différents. Un problème que pose l'utilisation de tels systèmes est le fait que, bien qu'ils respectent les contraintes réglementaires, les faisceaux produits, et notamment ceux correspondant aux fonctions élaborées, présentent des performances photométriques qui sont largement perfectibles. Notamment, pour la fonction autoroute ou mauvais temps, il peut être nettement avantageux d'augmenter les performances photométriques en terme de flux lumineux et d'intensité lumineuse dans une zone centrale du faisceau lumineux produit.Such solutions therefore make it possible to obtain, with each projector device in which they are implanted, a plurality of light beams. different. A problem posed by the use of such systems is the fact that, although they comply with regulatory constraints, the beams produced, especially those corresponding to the functions developed, have photometric performance that is largely perfectible. In particular, for the motorway function or bad weather, it can be clearly advantageous to increase the photometric performance in terms of luminous flux and light intensity in a central zone of the light beam produced.

Un objet de l'invention est de répondre notamment à ce problème concernant les performances photométriques de certaines fonctions d'éclairage. Dans l'invention, on propose une solution pour réaliser un dispositif projecteur multifonctions, c'est à dire au moins bifonctions, qui produit au moins un faisceau lumineux dont les performances photométriques sont améliorées par rapport à celles mesurées dans des dispositifs projecteurs de l'état de la technique réalisant les mêmes fonctions. A cet effet, on propose, dans l'invention, de compléter au moyen d'un élément optique additionnel au moins un cache utilisé pour générer, au sein d'un dispositif projecteur multifonctions, un faisceau lumineux correspondant à une fonction d'éclairage donnée, par exemple la fonction autoroute ou mauvais temps. Dans l'invention, on propose ainsi d'aménager un dispositif projecteur multifonctions du type de ceux présentant un cache multifonctions constitué essentiellement d'un support en rotation sur lui-même, avec un axe de rotation horizontal et perpendiculaire à l'axe optique du dispositif projecteur, ledit support maintenant une pluralité de caches présentant chacun une découpe déterminée pour générer une ligne de coupure spécifique.An object of the invention is to respond in particular to this problem concerning the photometric performance of certain lighting functions. In the invention, there is provided a solution for producing a multifunctional projector device, ie at least bifunctional, which produces at least one light beam whose photometric performance is improved compared to those measured in the projectors devices of the state of the art performing the same functions. For this purpose, it is proposed, in the invention, to supplement by means of an additional optical element at least one cache used to generate, within a multifunctional projector device, a light beam corresponding to a given lighting function. , for example the motorway function or bad weather. In the invention, it is thus proposed to provide a multifunctional projector device of the type of those having a multifunctional cover consisting essentially of a support in rotation on itself, with a horizontal axis of rotation and perpendicular to the optical axis of the projector device, said support holding a plurality of caches each having a determined cut to generate a specific cut line.

En outre, dans l'invention, on prévoit la résolution d'un problème inhérent à la présence d'un tel élément optique additionnel, à savoir un problème d'encombrement. Le problème d'encombrement est illustré au moyen des figures 2-A à 2-D, sur lesquelles on a représenté schématiquement une partie 200 d'un dispositif projecteur en vue de côté et en coupe verticale, comportant notamment les éléments principaux suivants:

  • un réflecteur 201 ;
  • une source lumineuse 202, par exemple de type lampe à décharge ;dans un tel cas, une zone dite de sécurité électrique 203 dans laquelle il est recommandé de ne pas introduire d'élément métallique ;
  • un occulteur multifonctions 204 constitué d'un support 205, mobile en rotation sur lui-même autour d'un premier axe de rotation 211 symbolisé par une flèche, ledit support 205 maintenant un premier cache 207, constitué d'un volet 208 complété par un élément optique additionnel 209, pour réaliser un faisceau lumineux de type feu d'autoroute ou de mauvais temps, et un deuxième cache 206, constitué d'un volet double pour réaliser un faisceau lumineux de type code.
In addition, the invention provides for the resolution of a problem inherent in the presence of such an additional optical element, namely a congestion problem. The congestion problem is illustrated by means of Figures 2-A to 2-D , schematically shown a portion 200 of a projector device in side view and in vertical section, including the following main elements:
  • a reflector 201;
  • a light source 202, for example of the discharge lamp type, in such a case, a so-called electrical safety zone 203 in which it is recommended not to introduce a metal element;
  • a multifunction occulteur 204 consisting of a support 205, rotatable on itself around a first axis of rotation 211 symbolized by an arrow, said support 205 holding a first cover 207, consisting of a flap 208 supplemented by an additional optical element 209, to produce a light beam type of fire motorway or bad weather, and a second cache 206, consisting of a double flap to achieve a code-type light beam.

La figure 2-A montre l'occulteur multifonctions 204 dans une position, désignée dans cet exemple comme position initiale, permettant la réalisation du faisceau de type code. La figure 2-B montre l'occulteur multifonctions dans une position, désignée dans cet exemple comme première position, permettant la réalisation du faisceau de type d'autoroute ou de mauvais temps.The figure 2-A shows the multifunction occulter 204 in a position, designated in this example as initial position, allowing the realization of the code-type beam. The Figure 2-B shows the multifunctional concealer in a position, designated in this example as the first position, allowing the realization of the motorway type beam or bad weather.

Un problème d'encombrement apparaît lorsque l'occulteur multifonctions 204 n'est plus dans la première position ou la deuxième position. En effet : d'une part, comme montré à la figure 2-C, une partie du premier cache 207 risque de ne pas être suffisamment dégagée pour ne pas intercepter des rayons lumineux 210 qui devraient pourtant contribuer à la réalisation du faisceau de type route ; d'autre part, comme montré à la figure 2-D, la présence de la plieuse 209 risque, lorsqu'elle est suffisamment dégagée pour ne plus intercepter les rayons lumineux 210, de faire pénétrer le deuxième cache 206 dans la zone de sécurité électrique 203. Afin de résoudre ce problème d'encombrement, on propose, dans l'invention, d'articuler, par rapport au support 205 le maintenant, le volet 208 associé à l'élément optique additionnel 209 afin de limiter l'encombrement de ce dernier dans certaines positions du support 205.A congestion problem appears when the multifunctional occulteur 204 is no longer in the first position or the second position. Indeed: on the one hand, as shown in Figure 2-C , part of the first cache 207 may not be sufficiently clear not to intercept light beams 210 which should however contribute to the realization of the road-type beam; on the other hand, as shown in figure 2-D , the presence of the folder 209 risk, when sufficiently cleared to stop intercepting the light rays 210, to penetrate the second cover 206 in the electrical safety zone 203. In order to solve this problem of space, it is proposed in the invention, to articulate, relative to the support 205 the now, the flap 208 associated with the additional optical element 209 to limit the bulk of the latter in certain positions of the support 205.

L'invention concerne donc essentiellement un dispositif projecteur multifonctions de type elliptique apte à émettre au moins un premier faisceau lumineux et un deuxième faisceau lumineux, le dispositif projecteur comprenant notamment :

  • une source lumineuse, disposée dans un réflecteur et émettant un ensemble de signaux lumineux ;
  • un élément dioptrique disposé en sortie du dispositif projecteur ;
  • un occulteur multifonctions disposé entre la source lumineuse et l'élément dioptrique, ledit occulteur multifonctions étant notamment constitué :
  • d'un élément support en rotation sur lui-même autour d'un premier axe de rotation sensiblement horizontal et perpendiculaire à l'axe optique du dispositif projecteur, l'élément support pouvant positionner l'occulteur multifonctions dans au moins une première position réalisant le premier faisceau lumineux et une deuxième position réalisant le deuxième faisceau lumineux;
  • d'au moins un premier cache maintenu par l'élément support, présentant une position optiquement active réalisant le premier faisceau lumineux, position optiquement active dans laquelle le premier cache intercepte une partie des signaux lumineux émis par la source lumineuse, le premier cache présentant notamment un bord optiquement actif, propre à former une coupure dans le premier faisceau lumineux émis par le dispositif projecteur, l'occulteur multifonctions comportant un mécanisme apte à rabattre le premier cache vers le premier axe de rotation, faisant alors passer le premier cache d'une première posture à une seconde posture, au moins quand l'occulteur multifonctions est amené de la première position vers la deuxième position, caractérisé en ce que le premier cache comporte un élément optique additionnel présentant au moins une surface réfléchissante apte à rediriger au-dessus du bord optiquement actif du premier cache des rayons lumineux émis par la source en direction dudit premier cache, le premier faisceau lumineux étant un faisceau du type autoroute ou de mauvais temps et on ce que le mécanisme apte à rabattre le premier cache vers le premier axe de rotation présente un axe de rotation secondaire sensiblement parallèle au premier axe de rotation, le premier cache étant rabattu par rotation autour dudit l'axe de rotation secondaire, ledit mécanisme comportant au moins une patte solidarisée avec le premier cache, ladite patte coopérant avec un élément de guidage maintenu fixe par rapport à un actionneur du dispositif projecteur pour faire pivoter le premier cache dans un sens de rotation inverse d'un sens de rotation de l'élément support de l'occulteur multifonctions quand l'occulteur multifonctions est amené de la première position vers la deuxième position.
The invention therefore essentially relates to a multifunctional projector device of elliptical type capable of emitting at least a first light beam and a second light beam, the projector device comprising in particular:
  • a light source disposed in a reflector and emitting a set of light signals;
  • a dioptric element disposed at the output of the projector device;
  • a multifunctional occluder disposed between the light source and the dioptric element, said multifunctional occulting being constituted in particular:
  • a support member rotating about itself about a first substantially horizontal axis of rotation and perpendicular to the optical axis of the projector device, the support member being able to position the multifunctional occulteur in at least one first position realizing the first light beam and a second position realizing the second light beam;
  • at least a first cover held by the support member, having an optically active position producing the first light beam, optically active position in which the first cover intercepts a part of the light signals emitted by the light source, the first cache having in particular an optically active edge, capable of forming a cut in the first light beam emitted by the projector device, the multifunctional occulting device comprising a mechanism adapted to fold the first cover towards the first axis of rotation, thus making the first cover of a first posture to a second posture, at least when the multifunctional occultor is brought from the first position to the second position, characterized in that the first cover comprises an additional optical element having at least one reflecting surface adapted to redirect over the optically active edge of the first cache of light rays emitted by the source towards said first cover, the first light beam being a motorway beam or bad weather and the mechanism adapted to fold the first cover towards the first axis of rotation has a secondary rotation axis substantially parallel to the first axis of rotation, the first cover being folded by rotation around said secondary axis of rotation, said mechanism comprising at least one lug secured to the first cover, said tab cooperating with a guide member held fixed relative to an actuator of the projector device for rotating the first cover in a direction of rotation opposite to a direction of rotation of the support member of the multifunctional concealer when the multifunction concealer is brought from the first position to the second position.

Le dispositif projecteur selon l'invention peut également présenter, outre les caractéristiques principales énoncées dans le paragraphe précédente, une ou plusieurs des caractéristiques secondaires sulvantes :

  • le mécanisme apte à rabattre le premier cache vers le premier axe de rotation comporte notamment un premier pion de fixation et un deuxième pion de fixation, chacun disposé à une extrémité du premier cache, emboîtés respectivement dans une première cavité et une deuxième cavité de l'élément support de l'occulteur multifonctions pour permettre la rotation dudit premier cache autour de l'axe de rotation secondaire,
  • le mécanisme apte à rabattre le premier cache vers le premier axe de rotation est complété par un ressort de rappel apte à positionner le premier cache dans sa première posture au moins quand le premier cache est dans sa position optiquement active ;
  • le ressort de rappel coopère avec une butée pour maintenir le premier cache dans sa première posture au moins quand le premier cache est dans sa position optiquement active ;
  • l'occulteur multifonctions comporte au moins un deuxième cache ;
  • le deuxième cache réalise le deuxième faisceau lumineux ou un troisième faisceau lumineux;
  • le deuxième cache est un cache double ;
  • le dispositif projecteur est du type trifonctions.;
  • le deuxième faisceau lumineux est un faisceau du type code;
  • le dispositif émet un troisième faisceau de type feu de route ;
  • le deuxième faisceau lumineux est du type route ;
  • la source lumineuse est du type lampe à décharge ;
  • l'élément optique additionnel est solidaire ou fait partie intégrante d'un volet du premier cache ;
  • la surface réfléchissante est située sur une face de l'élément optique additionnel, tournée vers le haut et s'étendant depuis le bord optlquement actif du premier cache vers la source lumineuse ;
  • l'élément optique additionnel comporte un bord avant accolé au bord optiquement actif du premier cache ;
  • la face comportant la surface réfléchissante présente un bord avant qui suit substantiellement, au moins localement, le profil du bord optiquement actif du cache ;
  • le bord avant de la face comportant la surface réfléchissante sert substantiellement de génératrice pour la forme de ladite face ;
  • la face comportant la surface réfléchissante présente un bord arrière, le bord arrière et le bord avant de ladite face présentant des profils sensiblement identiques, le profil du bord arrière étant contenu dans un plan parallèle à un plan contenant le profil du bord avant ;
  • la surface réfléchissante présente des surfaces convexes évolutives, le bord avant de la surface réfléchissante suivant substantiellement, au moins localement, le profil du bord optiquement actif du cache.
The projector device according to the invention may also have, in addition to the main features mentioned in the preceding paragraph, one or more of the following secondary characteristics:
  • the mechanism adapted to fold the first cover towards the first axis of rotation comprises in particular a first fixing pin and a second fixing pin, each disposed at one end of the first cover, nested respectively in a first cavity and a second cavity of the support element of the multifunctional concealer to allow the rotation of said first cover around the secondary axis of rotation,
  • the mechanism adapted to fold the first cover towards the first axis of rotation is completed by a return spring adapted to position the first cover in its first posture at least when the first cover is in its optically active position;
  • the return spring cooperates with a stop to maintain the first cover in its first posture at least when the first cover is in its optically active position;
  • the multifunction occulteur comprises at least a second cache;
  • the second cache realizes the second light beam or a third light beam;
  • the second cache is a double cache;
  • the projector device is of the trifunctional type .;
  • the second light beam is a code-type beam;
  • the device emits a third beam of high beam type;
  • the second light beam is of the road type;
  • the light source is of the discharge lamp type;
  • the additional optical element is integral or integral with a flap of the first cover;
  • the reflective surface is located on a face of the additional optical element, facing upwards and extending from the optically active edge of the first mask towards the light source;
  • the additional optical element comprises a front edge attached to the optically active edge of the first cache;
  • the face having the reflecting surface has a leading edge which substantially follows, at least locally, the profile of the optically active edge of the cache;
  • the front edge of the face having the reflective surface substantially serves as a generator for the shape of said face;
  • the face having the reflecting surface has a trailing edge, the trailing edge and the leading edge of said face having substantially identical profiles, the profile of the trailing edge being contained in a plane parallel to a plane containing the profile of the leading edge;
  • the reflective surface has evolving convex surfaces, the leading edge of the reflecting surface substantially, at least locally, the profile of the optically active edge of the cache.

L'invention et ses différentes applications seront mieux comprises à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Celles-ci ne sont présentées qu'à titre indicatif et nullement limitatif de l'invention. Les figures montrent :

  • à la figure 1, déjà décrite, une représentation d'un dispositif projecteur multifonctions existant dans l'état de la technique ;
  • aux figures 2-A, 2-B, 2-C et 2-D, également déjà décrites, une représentation simplifiée d'un dispositif projecteur multifonctions illustrant les problèmes d'encombrement rencontrés avec un occulteur multifonctions dont au moins un volet comporte un élément optique additionnel ;
  • à la figure 3, une représentation simplifiée d'un dispositif projecteur multifonctions illustrant schématiquement la résolution, grâce à l'invention, des problèmes d'encombrement rencontrés avec un occulteur multifonctions dont au moins un volet comporte un élément optique additionnel.
  • aux figures 4-A et 4-B, une représentation d'un premier exemple de cache et du profil de l'élément optique additionnel qu'il comporte apte à réaliser un faisceau lumineux de type autoroute ou mauvais temps ;
  • aux figures 5-A et 5-B, une représentation d'un deuxième exemple de cache et du profil de l'élément optique additionnel qu'il comporte apte à réaliser un faisceau lumineux de type autoroute ou mauvais temps ;
  • aux figures 6-A et 6-B, deux vues différentes d'un cache présentant le profil décrit aux figures 5-A et 5-B ;
  • aux figures 7-A à 7-D, plusieurs vues différentes d'un exemple de réalisation d'un occulteur multifonctions dans une première situation;
  • aux figures 8-A à 8-D, plusieurs vues différentes de l'occulteur multifonctions des figures 7-A à 7-D dans une deuxième situation ;
  • aux figures 9-A à 9-D, plusieurs vues différentes de l'occulteur multifonctions des figures 7-A à 7-D dans une troisième situation.
The invention and its various applications will be better understood by reading the following description and examining the figures that accompany it. These are presented only as an indication and in no way limitative of the invention. The figures show:
  • to the figure 1 , already described, a representation of a multifunctional projector device existing in the state of the art;
  • to the Figures 2-A, 2-B, 2-C and 2-D , also already described, a simplified representation of a multifunctional projector device illustrating the congestion problems encountered with a multifunctional occulteur whose at least one flap comprises an additional optical element;
  • to the figure 3 , a simplified representation of a multi-function projector device schematically illustrating the resolution, thanks to the invention, congestion problems encountered with a multifunction occulteur whose at least one flap comprises an additional optical element.
  • to the Figures 4-A and 4-B , a representation of a first example of a cache and the profile of the additional optical element that it comprises capable of producing a light beam of motorway type or bad weather;
  • to the Figures 5-A and 5-B , a representation of a second example of a cover and the profile of the additional optical element that it comprises capable of producing a light beam of highway type or bad weather;
  • to the Figures 6-A and 6-B , two different views of a cache with the profile described in Figures 5-A and 5-B ;
  • to the Figures 7-A to 7-D , several different views of an exemplary embodiment of a multifunctional occulteur in a first situation;
  • to the Figures 8-A to 8-D , several different views of the multifunction Figures 7-A to 7-D in a second situation;
  • to the Figures 9-A to 9-D , several different views of the multifunctional occulteur of the Figures 7-A to 7-D in a third situation.

Les éléments apparaissant sur différentes figures conservent, sauf précision contraire, les mêmes références. Par ailleurs, l'invention sera plus particulièrement illustrée dans le cadre d'un dispositif projecteur trifonctions, du type de celui représenté aux figures 2-A à 2-D, permettant l'obtention d'un faisceau de type route, d'un faisceau de type code, et d'un faisceau de type autoroute ou de type mauvais temps, mais présentant certaines performances photométriques améliorées. L'invention est cependant généralisable sans difficulté à tout dispositif projecteur multifonctions dont l'occulteur multifonctions est en rotation selon un axe horizontal et perpendiculaire à l'axe optique du dispositif considéré, et dont au moins un volet est complété par un élément optique additionnel.The elements appearing in different figures retain, unless otherwise specified, the same references. Furthermore, the invention will be more particularly illustrated in the context of a trifunctioning projector device, of the type of that shown in FIGS. Figures 2-A to 2-D , making it possible to obtain a road-type beam, a code-type beam, and a motorway-type or bad weather beam, but having certain improved photometric performance. The invention is however generalizable without difficulty to any multifunctional projector device whose multifunction occulteur is rotated along a horizontal axis and perpendicular to the optical axis of the device considered, and at least one component is completed by an additional optical element.

La figure 3 montre un dispositif projecteur 300, du type du dispositif projecteur 200 montré aux figures 2-A à 2-D, présentant les mêmes éléments principaux que le dispositif projecteur 200, mais dans lequel l'invention est mise en place ; l'occulteur multifonctions 204 a été remplacé par un occulteur multifonctions 204', la principale différence entre ces deux occulteurs résidant dans le fait que le premier cache 207 est désormais articulé par rapport à l'élément support 205.The figure 3 shows a projector device 300, of the type of the projector device 200 shown in FIGS. Figures 2-A to 2-D , having the same main elements as the projector device 200, but in which the invention is implemented; the multifunctional concealer 204 has been replaced by a multifunctional concealer 204 ', the main difference between these two concealers residing in the fact that the first cover 207 is now articulated with respect to the support element 205.

Comme on le constate, l'occulteur multifonctions 204' est amené dans une nouvelle position, désignée ici comme deuxième position, dans laquelle le faisceau lumineux produit correspond à un faisceau de type route, aucun cache ne venant plus intercepter les rayons lumineux 210. Comme on le constate sur la figure 3, le premier cache 207 adopte une nouvelle posture P2, désignée ici comme deuxième posture par rapport à une première posture P1 dans laquelle il se trouvait notamment lorsque l'occulteur multifonctions 204 était dans la première position représentée à la figure 2-B. La posture P2 se différencie de la posture P1 notamment par le fait que le premier cache est rabattu vers le premier axe de rotation 211, de façon à limiter son encombrement dû à la présence de la plieuse 209. L'opération de rabattement est réalisée, comme il sera détaillé ultérieurement, pendant que l'occulteur multifonctions 204' est amené de la première position à la deuxième position. Dans d'autres exemples de réalisation de l'invention, le passage de la première posture P1 à la deuxième posture P2 est réalisée lors d'autres mouvements de transition de l'occulteur 204', la posture P2 devant toujours être atteinte au moins lorsque le faisceau de type route doit être réalisé.As can be seen, the multifunctional occluder 204 'is brought into a new position, here designated as the second position, in which the light beam produced corresponds to a road-type beam, no cache no longer intercepting the light rays 210. it can be seen on the figure 3 , the first mask 207 adopts a new posture P2, designated here as a second posture with respect to a first posture P1 in which it was in particular when the multifunctional occluder 204 was in the first position shown in FIG. Figure 2-B . The posture P2 differs from the posture P1 in particular by the fact that the first cover is folded towards the first axis of rotation 211, so as to limit its bulk due to the presence of the folder 209. The folding operation is carried out, as will be detailed later, while the multifunction occulteur 204 'is brought from the first position to the second position. In other embodiments of the invention, the transition from the first posture P1 to the second posture P2 is performed during other transition movements of the occluder 204 ', the posture P2 must always be reached at least when the road-type beam must be realized.

La figure 4-A montre un premier exemple 400 du cache 207 dans la première position représentée à la figure 2-B. Le cache 400 est constitué d'un volet 401, globalement vertical, qui occulte, lorsqu'il est placé dans sa position optiquement active, une partie du faisceau lumineux issu du réflecteur, et d'un élément optique additionnel 402, globalement horizontal, dont au moins la face supérieure 403 est réfléchissante afin d'ajouter dans le faisceau traversant la lentille une partie des rayons qui, sans la présence de cette surface réfléchissante, aurait été interceptée par le volet, et donc perdue. Le volet 401 et la plieuse 402 sont jointifs : un bord supérieur 404 du volet 401 correspond à un bord avant 405 de la plieuse 402, aucun rayon lumineux ne pouvant ainsi filtrer entre ces deux éléments. Toute fuite lumineuse indésirable susceptible de provoquer des éblouissements est ainsi empêchée.The figure 4-A shows a first 400 example of cache 207 in the first position represented in Figure 2-B . The cover 400 consists of a shutter 401, generally vertical, which, when placed in its optically active position, conceals a part of the light beam coming from the reflector, and an additional optical element 402, generally horizontal, of which at least the upper face 403 is reflective in order to add in the beam passing through the lens a portion of the rays which, without the presence of this reflecting surface, would have been intercepted by the shutter, and thus lost. The flap 401 and the folder 402 are joined: an upper edge 404 of the flap 401 corresponds to a front edge 405 of the folder 402, no light ray can thus filter between these two elements. Any undesirable light leakage that may cause dazzling is thus prevented.

La figure 4-B montre plus en détail le profil 406 du bord avant 405, qui détermine de manière prépondérante la forme du faisceau lumineux généré. La surface de la plieuse 402 est ensuite une extrusion horizontale de la forme du bord avant 405 en partant dudit bord avant 405' vers la source lumineuse. Le profil 406 est constitué de la réunion d'un segment horizontal inférieur 407 et d'un segment horizontal supérieur 408, reliés par un segment oblique 409, globalement central. La hauteur du segment 407 est déterminée pour éviter tout éblouissement des conducteurs doublés par l'intermédiaire de leur rétroviseur extérieur, dont la position approximative 410 est symbolisée par un cercle barré. La différence de niveau entre le segment 407 et le segment 408 est de l'ordre de 0,48 millimètres.The figure 4-B shows in more detail the profile 406 of the front edge 405, which predominantly determines the shape of the generated light beam. The surface of the folder 402 is then a horizontal extrusion of the shape of the leading edge 405 from said front edge 405 'to the light source. Profile 406 consists of the joining of a lower horizontal segment 407 and an upper horizontal segment 408, connected by an oblique segment 409, generally central. The height of the segment 407 is determined to avoid glare of the doubled conductors through their exterior mirror, whose approximate position 410 is symbolized by a crossed circle. The difference in level between segment 407 and segment 408 is of the order of 0.48 millimeters.

La figure 5-A montre un deuxième exemple 400' du cache 207 dans la première position représentée à la figure 2-B. Le cache 400' est constitué d'un volet 401', globalement vertical, qui occulte, lorsqu'il est placé dans sa position optiquement active, une partie du faisceau lumineux issu du réflecteur, et d'un élément optique additionnel 402', globalement horizontal, dont au moins la face supérieure 403' est réfléchissante afin d'ajouter dans le faisceau traversant la lentille une partie des rayons qui, sans la présence de cette surface réfléchissante, aurait été interceptée par le cache, et donc perdue. Le volet 401' et la plieuse 402' sont jointifs : un bord supérieur 404' du volet 401' correspond à un bord avant 405' de la plieuse 402', aucun rayon lumineux ne pouvant ainsi filtrer entre ces deux éléments. Toute fuite lumineuse indésirable susceptible de provoquer des éblouissements est ainsi empêchée.The figure 5-A shows a second example 400 'of the cache 207 in the first position shown in FIG. Figure 2-B . The cover 400 'consists of a flap 401', generally vertical, which, when placed in its optically active position, conceals a part of the light beam coming from the reflector, and an additional optical element 402 ', globally horizontal, at least the upper face 403 'is reflective in order to add in the beam passing through the lens part of the rays which, without the presence of this reflecting surface, would have been intercepted by the cache, and thus lost. The flap 401 'and the folder 402' are joined: an upper edge 404 'of the flap 401' corresponds to a front edge 405 'of the folder 402', no light ray can thus filter between these two elements. Any undesirable light leakage that may cause dazzling is thus prevented.

La figure 5-B montre plus en détail le profil 406' du bord avant 405', qui détermine de manière prépondérante la forme du faisceau lumineux généré. La surface de la plieuse 402' est ensuite une extrusion horizontale de la forme du bord avant 405' en partant dudit bord avant 405' vers la source lumineuse. Par rapport au profil 406, le profil 406' est une forme optimisée comprenant un décrochement 411' autour du maximum d'intensité pour augmenter la portée du faisceau lumineux de type feu d'autoroute ou de mauvais temps ; le décrochement 411' est restreint en largeur pour éviter tout éblouissement des conducteurs doublés par l'intermédiaire de leur rétroviseur extérieur, dont la position approximative 410' est symbolisée par un cercle barré. Le profil 406' est ainsi constitué de la réunion d'un segment horizontal intermédiaire 407', d'un segment horizontal inférieur 408' - reliés entre eux par l'intermédiaire d'un premier segment oblique 412 formant un angle de 45 degrés avec le segment inférieur 408' - et d'un segment horizontal supérieur 409', relié au segment horizontal inférieur 408' par un second segment oblique 413' formant un angle de 40 degrés avec le segment inférieur 408'. La différence de niveau entre le segment supérieur 409' et le segment inférieur 408' est de l'ordre de 0,8 millimètres, et la différence de niveau entre le segment intermédiaire 407' et le segment inférieur 408' est de l'ordre de 0,33 millimètres. Le segment inférieur 408' mesure environ 1,05 millimètres.The figure 5-B shows in more detail the profile 406 'of the front edge 405', which determines predominantly the shape of the generated light beam. The surface of the folder 402 'is then a horizontal extrusion of the shape of the leading edge 405' from said front edge 405 'to the light source. With respect to the profile 406, the profile 406 'is an optimized form comprising a recess 411' around the maximum intensity to increase the range of the light beam of highway fire type or bad weather; the recess 411 'is restricted in width to avoid any glare of the doubled conductors through their external rearview mirror, whose approximate position 410' is symbolized by a crossed circle. The profile 406 'thus consists of the union of an intermediate horizontal segment 407', a lower horizontal segment 408 '- interconnected by means of a first oblique segment 412 forming a 45 degree angle with the lower segment 408 '- and an upper horizontal segment 409' connected to the lower horizontal segment 408 'by a second oblique segment 413' forming an angle of 40 degrees with the lower segment 408 '. The difference in level between the upper segment 409 'and the lower segment 408' is of the order of 0.8 millimeters, and the difference in level between the intermediate segment 407 'and the lower segment 408' is of the order of 0.33 millimeters. The lower segment 408 'is about 1.05 millimeters.

Dans les deux exemples qui viennent d'être décrits, des modifications de la surface extrudée, consistant en un remplacement de ladite surface par des surfaces complexes évolutives, tout en conservant la forme du bord avant 405 ou 405', permettent d'améliorer la répartition et l'homogénéité du faisceau obtenu en sortie de la lentille du dispositif projecteur.In the two examples which have just been described, modifications of the extruded surface, consisting of a replacement of said surface by evolving complex surfaces, while retaining the shape of the front edge 405 or 405 ', make it possible to improve the distribution and the homogeneity of the beam obtained at the output of the lens of the projector device.

Les figures 6-A et 6-B montrent respectivement une première vue et une seconde vue de l'exemple 400' du cache 207 dans sa réalisation définitive 600 conçue pour être maintenue sur le support 205 de l'occulteur multifonctions 204'. Outre les éléments déjà présents sur la figure 5-A, un premier pion de fixation 601 et d'un deuxième pion de fixation 602 sont disposés de part et d'autre du cache 400'. Une butée 603, placée ici sur le deuxième pion de fixation 602, et une patte de guidage 604, globalement perpendiculaire à la plieuse 402' sont ajoutées. Ces différents éléments interviennent dans le mécanisme permettant de rabattre le premier cache 400'. Un bord vertical arrière 605 de la plieuse 402' est avantageusement réfléchissant, des problèmes thermiques étant ainsi résolus.The Figures 6-A and 6-B respectively show a first view and a second view of the example 400 'of the cache 207 in its final embodiment 600 designed to be held on the support 205 of the multifunctional occulteur 204'. In addition to the elements already present on the figure 5-A , a first fixing pin 601 and a second fixing pin 602 are arranged on either side of the cover 400 '. A stop 603, placed here on the second attachment pin 602, and a guide tab 604, generally perpendicular to the folder 402 'are added. These various elements are involved in the mechanism for folding the first cache 400 '. A vertical rear edge 605 of the folder 402 'is advantageously reflective, thermal problems being thus solved.

Les figures 7-A, 7-B, 7-C et 7-D montrent l'occulteur multifonctions 204' complet, c'est à dire prêt à être monté dans le dispositif projecteur final, dans une première situation correspondant à une première étape de l'opération de rabattement du premier cache 207.The Figures 7-A, 7-B, 7-C and 7-D show the multifunctional occulteur 204 ' complete, that is to say ready to be mounted in the final projector device, in a first situation corresponding to a first step of the operation of folding the first cache 207.

Les figures 8-A, 8-B, 8-C et 8-D montrent l'occulteur multifonctions 204' complet dans une deuxième situation correspondant à une deuxième étape de l'opération de rabattement du premier cache 207.The Figures 8-A, 8-B, 8-C and 8-D show the multifunctional occulteur 204 'complete in a second situation corresponding to a second step of the operation of folding the first cache 207.

Les figures 9-A, 9-B, 9-C et 9-D montrent l'occulteur multifonctions 204' complet dans une troisième situation correspondant à une troisième étape de l'opération de rabattement du premier cache 207.The Figures 9-A, 9-B, 9-C and 9-D show the multifunctional occulteur 204 'complete in a third situation corresponding to a third step of the folding operation of the first cache 207.

Les extensions "-A", "-B", "-C" et "-D" accolées aux numéros des figures 7, 8 et 9 correspondent respectivement à une première vue, à une deuxième vue, à une vue plus détaillée et ciblée de la première vue, et à une vue plus détaillée et ciblée de la deuxième vue, de l'occulteur multifonctions 204'.The extensions "-A", "-B", "-C" and "-D" next to the numbers of Figures 7, 8 and 9 corresponding respectively to a first view, to a second view, to a more detailed and targeted view of the first view, and to a more detailed and targeted view of the second view, of the multifunctional occulteur 204 '.

L'occulteur multifonctions 204' complet comporte notamment:

  • le support 205 ;
  • le premier cache 400' tel qu'il a été décrit précédemment;le premier pion de fixation 601 et le second pion de fixation 602 sont placés respectivement dans une première cavité 701 et dans une seconde cavité 702 du support 205, de telle sorte que le premier cache 400' a la possibilité de pivoter autour d'un axe de rotation secondaire 703 joignant les deux pions de fixation 601 et 602;
  • le deuxième cache 206, tel qu'il a été mentionné précédemment, et fixé de manière inamovible sur le support 205;
  • le premier axe de rotation 211 autour duquel le support 205 peut évoluer;
  • un ressort de torsion 704, disposé sur l'axe de rotation secondaire 703 entre le premier cache 400' et le deuxième cache 206.
The multifunctional occulteur 204 'complete comprises in particular:
  • the support 205;
  • the first cover 400 'as previously described, the first fixing pin 601 and the second fixing pin 602 are respectively placed in a first cavity 701 and in a second cavity 702 of the support 205, so that the first cover 400 'has the possibility of pivoting about a secondary axis of rotation 703 joining the two fixing pins 601 and 602;
  • the second cache 206, as mentioned above, and irremovably fixed on the support 205;
  • the first axis of rotation 211 around which the support 205 can evolve;
  • a torsion spring 704 disposed on the secondary axis of rotation 703 between the first cover 400 'and the second cover 206.

Par ailleurs, l'occulteur multifonctions coopère avec un élément de guidage 705, ou guide, solidaire d'un boîtier 706, par exemple le boîtier de l'actionneur, lui-même solidaire du réflecteur ou de la lentille.Furthermore, the multifunctional concealer cooperates with a guide element 705, or guide, secured to a housing 706, for example the housing of the actuator, itself integral with the reflector or the lens.

Dans la position correspondant à la fonction code (figures 7-A à 7-D), dans la position correspondant à la fonction autoroute ou mauvais temps (figures 8-A à 8-B), ainsi qu'entre ces deux positions, la patte de guidage 604 n'est pas en contact avec le guide 705. En conséquence, le volet 401' du premier cache 400' est plaqué par le ressort 704 de sorte que sa butée 603 soit amenée en appui contre un des volets du deuxième cache 206. Une telle configuration correspond à la première posture P1 du premier cache 400'. Une telle disposition garantit la précision de la position du premier cache 400' lorsque le faisceau autoroute ou mauvais temps doit être réalisé.In the position corresponding to the code function ( Figures 7-A to 7-D ), in the position corresponding to the motorway function or bad weather ( Figures 8-A to 8-B ) and between these two positions, the guide lug 604 is not in contact with the guide 705. Consequently, the flap 401 'of the first cover 400' is pressed by the spring 704 so that its stop 603 is brought in support against one of the flaps of the second cache 206. Such a configuration corresponds to the first posture P1 of the first cache 400 '. Such an arrangement ensures the accuracy of the position of the first cache 400 'when the motorway beam or bad weather must be achieved.

Lors du passage à la fonction route (Figure 9-A à 9-C), l'occulteur multifonctions 204' continue sa rotation autour du premier axe 211 au-delà de la position correspondant à la réalisation du faisceau autoroute ou mauvais temps ; la patte de guidage 604 du premier cache 400' vient alors en contact avec le guide 705. Ce dernier, notamment par la présence d'une section arrondie 707 au contact de laquelle va évoluer une extrémité 708 de la patte de guidage 604, est conçu de telle sorte que le mouvement de rotation, imposé à l'occulteur multifonctions 204' par l'actionneur 105, entraîne un basculement du premier cache 400' par rapport au deuxième cache 206 autour de l'axe de rotation secondaire 703. Le premier cache 400' est ainsi rabattu vers le support 205 selon un sens de rotation 709 opposé au sens 710 de la rotation, qui provoque ledit rabattement, de l'occulteur multifonctions 204' autour du premier axe de rotation 211. Une telle configuration correspond à la deuxième posture P2 du premier cache 400'When switching to the route function ( Figure 9-A to 9-C ), the multifunction occulter 204 'continues its rotation about the first axis 211 beyond the position corresponding to the realization of the motorway beam or bad weather; the guide lug 604 of the first cover 400 'then comes into contact with the guide 705. The latter, in particular by the presence of a rounded section 707 in contact with which will evolve an end 708 of the guide lug 604, is designed such that the rotational movement imposed on the multifunctional concealer 204 'by the actuator 105 causes the first cover 400' to tilt relative to the second cover 206 about the secondary rotation axis 703. The first cover 400 'is thus folded towards the support 205 in a direction of rotation 709 opposite the direction 710 of the rotation, which causes said folding, the multifunction occulteur 204' around the first axis of rotation 211. Such a configuration corresponds to the second posture P2 of the first cache 400 '

Avantageusement, l'actionneur est dimensionné de façon à pouvoir entraîner et maintenir en position l'occulteur multifonctions 204' en prenant en considération les efforts supplémentaires dus à la présence du ressort 704 et les efforts de frottement dus au contact entre la patte de guidage 604 et le guide 705. Par ailleurs, le ressort 704 est pour sa part dimensionné pour assurer le retour du premier cache 400' dans sa première posture P1 lors du retour de l'occulteur multifonctions 204' dans la position correspondant à la fonction code ou à la fonction autoroute ou mauvais temps.Advantageously, the actuator is dimensioned so as to be able to drive and hold in position the multifunctional occluder 204 'taking into consideration the additional forces due to the presence of the spring 704 and the frictional forces due to the contact between the guide lug 604 and the guide 705. Moreover, the spring 704 is for its part dimensioned to ensure the return of the first cover 400 'in its first posture P1 during the return of the multifunctional concealer 204' in the position corresponding to the code function or the highway function or bad weather.

Dans un mode de réalisation particulier, le deuxième cache 206 est réalisé en matériau métallique, en tôle découpée emboutie par exemple et est surmoulé en matière thermoplastique résistante à la température, ce qui permet d'intégrer dans la partie moulée notamment une liaison avec l'actionneur - une telle liaison pouvant par exemple consister en une roue dentée d'un système de réduction.In a particular embodiment, the second cover 206 is made of metal material, stamped cut sheet metal for example and is overmolded in thermoplastic material resistant to temperature, which allows to integrate in the molded part in particular a connection with the actuator - such a link may for example consist of a gear wheel of a reduction system.

Le premier cache 400' est avantageusement réalisé par injection thermoplastique suivie d'une étape d'aluminage ; la réalisation du premier cache en matériau céramique est également possible, l'avantage d'une telle réalisation résidant dans le caractère isolant de ce matériau. La réalisation du premier cache en matériau métallique, par exemple une tôle emboutie ou de l'aluminium ou du magnésium injecté, est elle aussi prévue dans d'autres modes de réalisation.The first cover 400 'is advantageously made by thermoplastic injection followed by an aluminizing step; the production of the first cache of ceramic material is also possible, the advantage of such an embodiment residing in the insulating nature of this material. The realization of the first cache of metallic material, for example a stamped sheet or injected aluminum or magnesium, is also provided in other embodiments.

Les avantages de l'invention décrite sont nombreux : citons notamment :

  • la conservation d'un unique actionneur simple;
  • le caractère totalement indépendant des modes de réalisation des coupures des fonctions code et autoroute ou mauvais temps ; d'une part, on obtient ainsi des formes de coupure complètement indépendantes ; ceci est particulièrement avantageux dans le cas d'une fonction autoroute ou mauvais temps, dans laquelle la coupure horizontale coté gauche doit être relevée, idéalement de 0.5 %, sans toutefois relever la coupure coté droit afin d'éviter de créer un phénomène d'éblouissement dans les rétroviseurs des véhicules suivis ; et d'autre part on a la possibilité d'utiliser un cache présentant un élément optique additionnel, par exemple pour la fonction autoroute ou mauvais temps, afin d'obtenir d'excellentes performances photométriques ;
  • la conservation du principe d'actionnement mécanique bien connu des modules bi-fonction et tri-fonction, dont la rapidité de passage entre fonctions est un atout important ;
  • la simplicité du dispositif décrit, et donc sa fiabilité et son faible coût.
The advantages of the described invention are numerous: in particular:
  • the preservation of a single simple actuator;
  • the totally independent character of the embodiments of the breaks of the code and highway or bad weather functions; on the one hand, one thus obtains completely independent forms of cutoff; this is particularly advantageous in the case of a motorway function or bad weather, in which the horizontal cut left side should be raised, ideally 0.5%, without however raise the cut right side to avoid creating a phenomenon of dazzle in mirrors of vehicles tracked; and on the other hand it is possible to use a cover having an additional optical element, for example for the motorway function or bad weather, in order to obtain excellent photometric performance;
  • the preservation of the well-known mechanical actuation principle of the two-function and tri-function modules, whose speed of passage between functions is an important asset;
  • the simplicity of the device described, and therefore its reliability and low cost.

Claims (19)

  1. Multifunctional headlight device (300) of the elliptical type, which can emit at least a first light beam and a second light beam, the headlight device comprising in particular:
    - a source of light (202) which is disposed in a reflector (201) and emits a series of light signals;
    - a dioptric element (102) which is disposed at the output from the headlight device;
    - a multifunctional light shield (204') which is disposed between the source of light and the dioptric element, the said multifunctional light shield consisting in particular of:
    - a support element (205) which rotates around itself, around a first axis of rotation (211) which is substantially horizontal, and perpendicular to the optical axis of the headlight device, the support element being able to position the multifunctional light shield in at least a first position which provides the first light beam, and a second position which provides the second light beam;
    - at least a first shield (207) which is retained by the support element, with an optically active position which provides the first light beam, in which optically active position the first shield intercepts part of the light signals emitted by the source of light, the first shield having in particular an optically active edge (403') which can form a cut-off in the first light beam emitted by the headlight device, the multifunctional light shield comprising a mechanism which can turn the first shield down towards the first axis of rotation, thus making the first shield go from a first posture (P1) to a second posture (P2), at least when the multifunctional light shield is brought from the first position to the second position, the said mechanism having a secondary axis of rotation (703) which is substantially parallel to the first axis of rotation, the first shield being turned down by rotation around the secondary axis of rotation, characterised in that the first shield (207) comprises an additional optical element (209) with at least one reflective surface (403; 403') which can redirect, above the optically active edge of the first shield, rays of light emitted by the source in the direction of the said first shield, the first light being a beam of the motorway or bad weather type, and in that the mechanism which can turn the first shield down towards the first axis of rotation comprises at least one lug (604) which is rendered integral with the first shield, the said lug co-operating with a guide element (705) which is maintained fixed relative to an actuator (105) of the headlight device, in order to make the first shield pivot in a direction of rotation (709) which is the inverse of a direction of rotation (710) of the support element of the multifunctional light shield, when the multifunctional light shield is brought from the first position towards the second position.
  2. Headlight device according to the preceding claim, characterised in the mechanism which can turn the first shield down towards the first axis of rotation comprises in particular a first securing pin (601) and a second securing pin (602), each disposed at an end of the first shield, and fitted respectively into a first cavity (701) and a second cavity (702) in the support element of the multifunctional light shield, in order to permit the rotation of the said first shield around the secondary axis of rotation.
  3. Headlight device according to at least one of the preceding claims, characterised in that the mechanism which can turn the first shield down towards the first axis of rotation is completed by a return spring (704) which can position the first shield in its first posture, at least when the first shield is in its optically active position.
  4. Headlight device according to the preceding claim, characterised in that the return spring co-operates with a stop (603) in order to maintain the first shield in its first posture, at least when the first shield is in its optically active position.
  5. Headlight device according to at least one of the preceding claims, characterised in that the multifunctional light shield comprises at least a second shield (206).
  6. Headlight device according to the preceding claim, characterised in that the second shield provides the second light beam or a third light beam.
  7. Headlight device according to at least one of claims 5 or 6, characterised in that the second shield is a double shield.
  8. Headlight device according to at least one of claims 5 to 7, characterised in that it is of the three-function type.
  9. Headlight device according to at least one of the preceding claims, characterised in that the second light beam is a beam of the low-beam type.
  10. Headlight device according to at least one of the preceding claims, characterised in that it emits a third beam of the high-beam type.
  11. Headlight device according to at least one of claims 1 to 8, characterised in that the second light beam is of the high-beam type.
  12. Headlight device according to at least one of the preceding claims, characterised in that the source of light is of the discharge lamp type.
  13. Headlight device according to at least one of the preceding claims, characterised in that the additional optical element is integral with, or forms an integral part of, a shutter (208, 401') of the first shield.
  14. Headlight device according to at least one of the preceding claims, characterised in that the reflective surface is situated on a face of the additional optical element which faces upwards and extends from the optically active edge of the first shield towards the source of light.
  15. Headlight device according to at least one of the preceding claims, characterised in that the additional optical element comprises a front edge (405; 405') which is coupled to the optically active edge of the first shield.
  16. Headlight device according to at least one of the preceding claims, characterised in that the face comprising the reflective surface has a front edge which, at least locally, follows substantially the profile of the optically active edge of the shield.
  17. Headlight device according to the preceding claim, characterised in that the front edge of the face comprising the reflective surface acts substantially as a generatrix for the form of the said face.
  18. Headlight device according to at least one of claims 16 or 17, characterised in that the face comprising the reflective surface has a rear edge, the rear edge and the front edge having substantially identical profiles, the profile of the rear edge being contained on a plane parallel to a plane which contains the profile of the front edge.
  19. Headlight device according to claim 16, characterised in that the reflective surface has evolutive convex surfaces, the front edge (405, 405') of the reflective surface following substantially, at least locally, the profile of the optically active edge of the shield.
EP06292012.9A 2006-01-05 2006-12-21 Multifunctional elliptical headlamp device with additional optical element Not-in-force EP1806531B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0600093A FR2895782B1 (en) 2006-01-05 2006-01-05 MULTIFUNCTION ELLIPTICAL PROJECTOR DEVICE WITH ADDITIONAL OPTICAL ELEMENT

Publications (2)

Publication Number Publication Date
EP1806531A1 EP1806531A1 (en) 2007-07-11
EP1806531B1 true EP1806531B1 (en) 2015-07-29

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EP06292012.9A Not-in-force EP1806531B1 (en) 2006-01-05 2006-12-21 Multifunctional elliptical headlamp device with additional optical element

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FR (1) FR2895782B1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2936591B1 (en) * 2008-09-30 2014-09-12 Valeo Vision Sas OPTICAL MODULE FOR A MOTOR VEHICLE FOR SELECTIVELY LIGHTING A ZONE
FR2944857B1 (en) 2009-04-24 2017-02-03 Valeo Vision OPTICAL DEVICE FOR MOTOR VEHICLE.
DE102009035743A1 (en) * 2009-08-01 2011-02-17 Automotive Lighting Reutlingen Gmbh Light module for a motor vehicle headlight
AT509816B1 (en) * 2010-04-22 2012-07-15 Zizala Lichtsysteme Gmbh HEADLIGHTS FOR VEHICLES
DE102011002337A1 (en) * 2011-04-29 2012-10-31 Hella Kgaa Hueck & Co. Projection headlights for vehicles
DE102011087245A1 (en) * 2011-11-28 2013-05-29 Automotive Lighting Reutlingen Gmbh Projection light module with a cover made of plastic material
DE102013106569B4 (en) * 2013-06-24 2024-03-28 HELLA GmbH & Co. KGaA Headlights for vehicles with a rotatable aperture shaft that has correction edges to compensate for aberrations in a lens
FR3032925B1 (en) 2015-02-20 2018-08-10 Valeo Vision GENERATION AND PROCESSING PHOTOMETRY DEPARTURE
DE102019118590A1 (en) * 2019-07-09 2021-01-14 Automotive Lighting Reutlingen Gmbh Light module of a motor vehicle headlight and motor vehicle headlight with such a light module

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Publication number Priority date Publication date Assignee Title
JP2765643B2 (en) * 1992-06-03 1998-06-18 株式会社小糸製作所 Projection type automotive headlamp
DE4315401A1 (en) * 1993-05-08 1994-11-10 Bosch Gmbh Robert Headlights for vehicles
EP1193440A1 (en) * 2000-10-02 2002-04-03 Stanley Electric Co., Ltd. Headlamp for vehicle
FR2847655B1 (en) * 2002-11-21 2005-03-04 Valeo Vision ELLIPTICAL PROJECTOR FOR A MOTOR VEHICLE EMITTING DIFFERENT LIGHTING BEAMS
JP2005259549A (en) * 2004-03-12 2005-09-22 Koito Mfg Co Ltd Projection type vehicular head lamp

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FR2895782A1 (en) 2007-07-06
EP1806531A1 (en) 2007-07-11
FR2895782B1 (en) 2013-05-17

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