EP1806531B1 - Multifunctional elliptical headlamp device with additional optical element - Google Patents
Multifunctional elliptical headlamp device with additional optical element Download PDFInfo
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/698—Shaft-shaped screens rotating along its longitudinal axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
- F21W2102/135—Arrangement 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use 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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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
On connaît par ailleurs de
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.
- 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 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
- 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 duréflecteur 101 ; - un élément dioptrique 102, par exemple une lentille convergente, positionnée au second foyer du
réflecteur 101.
- 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 thereflector 101; - a
dioptric element 102, for example a convergent lens, positioned at the second focus of thereflector 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-
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
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
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 premieraxe de rotation 211 symbolisé par une flèche,ledit support 205 maintenant unpremier 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 deuxièmecache 206, constitué d'un volet double pour réaliser un faisceau lumineux de type code.
- a
reflector 201; - a
light source 202, for example of the discharge lamp type, in such a case, a so-calledelectrical safety zone 203 in which it is recommended not to introduce a metal element; - a
multifunction occulteur 204 consisting of asupport 205, rotatable on itself around a first axis ofrotation 211 symbolized by an arrow, saidsupport 205 holding afirst cover 207, consisting of aflap 208 supplemented by an additionaloptical element 209, to produce a light beam type of fire motorway or bad weather, and asecond cache 206, consisting of a double flap to achieve a code-type light beam.
La
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
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.
- 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 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 auxfigures 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 desfigures 7-A à 7-D dans une deuxième situation ; - aux
figures 9-A à 9-D , plusieurs vues différentes de l'occulteur multifonctions desfigures 7-A à 7-D dans une troisième situation.
- 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 inFigures 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 multifunctionFigures 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 theFigures 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
La
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
La
La
La
La
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
Les
Les
Les
Les
Les extensions "-A", "-B", "-C" et "-D" accolées aux numéros des
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 defixation 602 sont placés respectivement dans une première cavité 701 et dans une seconde cavité 702 dusupport 205, de telle sorte que le premier cache 400' a la possibilité de pivoter autour d'un axede rotation secondaire 703 joignant les deux pions defixation 601et 602; - le deuxième
cache 206, tel qu'il a été mentionné précédemment, et fixé de manière inamovible sur lesupport 205; - le premier
axe de rotation 211 autour duquel lesupport 205 peut évoluer; - un ressort de torsion 704, disposé sur l'axe de
rotation secondaire 703 entre le premier cache 400' et le deuxièmecache 206.
- the
support 205; - the first cover 400 'as previously described, the
first fixing pin 601 and thesecond fixing pin 602 are respectively placed in afirst cavity 701 and in asecond cavity 702 of thesupport 205, so that the first cover 400 'has the possibility of pivoting about a secondary axis ofrotation 703 joining the two fixing 601 and 602;pins - the
second cache 206, as mentioned above, and irremovably fixed on thesupport 205; - the first axis of
rotation 211 around which thesupport 205 can evolve; - a
torsion spring 704 disposed on the secondary axis ofrotation 703 between the first cover 400 'and thesecond 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
Dans la position correspondant à la fonction code (
Lors du passage à la fonction route (
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
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
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 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)
- 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.
- 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.
- 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.
- 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.
- 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).
- Headlight device according to the preceding claim, characterised in that the second shield provides the second light beam or a third light beam.
- Headlight device according to at least one of claims 5 or 6, characterised in that the second shield is a double shield.
- Headlight device according to at least one of claims 5 to 7, characterised in that it is of the three-function type.
- 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.
- Headlight device according to at least one of the preceding claims, characterised in that it emits a third beam of the high-beam type.
- 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.
- Headlight device according to at least one of the preceding claims, characterised in that the source of light is of the discharge lamp type.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
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 |
Family
ID=36968772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06292012.9A Not-in-force EP1806531B1 (en) | 2006-01-05 | 2006-12-21 | Multifunctional elliptical headlamp device with additional optical element |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1806531B1 (en) |
FR (1) | FR2895782B1 (en) |
Families Citing this family (9)
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 |
Family Cites Families (5)
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 |
-
2006
- 2006-01-05 FR FR0600093A patent/FR2895782B1/en not_active Expired - Fee Related
- 2006-12-21 EP EP06292012.9A patent/EP1806531B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
FR2895782A1 (en) | 2007-07-06 |
EP1806531A1 (en) | 2007-07-11 |
FR2895782B1 (en) | 2013-05-17 |
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