EP0688999A1 - Vehicle headlight having in particular an elliptical reflector and emitting a beam having two selectively switchable cut-off lines - Google Patents
Vehicle headlight having in particular an elliptical reflector and emitting a beam having two selectively switchable cut-off lines Download PDFInfo
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- EP0688999A1 EP0688999A1 EP95401495A EP95401495A EP0688999A1 EP 0688999 A1 EP0688999 A1 EP 0688999A1 EP 95401495 A EP95401495 A EP 95401495A EP 95401495 A EP95401495 A EP 95401495A EP 0688999 A1 EP0688999 A1 EP 0688999A1
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- shutter
- flap
- cut
- projector
- support rod
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- 238000012216 screening Methods 0.000 claims description 5
- 230000001131 transforming effect Effects 0.000 claims description 3
- 241000446313 Lamella Species 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- F21S41/686—Blades, i.e. screens moving in a vertical plane
Definitions
- the invention relates to a beam projector, in particular for a motor vehicle.
- Such a projector essentially comprises a light source and a reflector together defining a light beam, as well as a means for defining the cut-off, that is to say for defining the delimitation between the illuminated area and the dark area, of the diagram of 'headlamp illumination, as required in particular for dipped headlights and fog lamps.
- the means for defining the cut-off may consist of a screening screen. interposed in the beam, the edge of this screen defining the desired cutoff profile.
- the main object of the invention is to propose a headlamp of this type making it possible to selectively modify the cut-off profile, that is to say, in other words, making it possible to choose two single cut-outs on one and the same headlamp. different as needed.
- EP-A-0 294 589 projects a projector according to the preamble of claim 1.
- These means include, here again, a fixed element and a mobile element defining in combination the cutoff, but proposition of this anticipation these two elements are distant from each other in the direction of the axis of the beam.
- the disadvantage is that it is necessary to give one of the two elements (the fixed element, in the example illustrated by this document) a curved shape in order to compensate for the axial offset relative to the focus and act in a substantially uniform manner across the entire beam width.
- the cut defined by this device has a poor definition, therefore provides a beam quality lower than that which would be with a specialized projector with single cut.
- a headlight as defined in claim 1.
- Figure 1 is a front view, along I-I of Figure 2, of the screen of the projector of the invention, equipped with a rotary control system.
- FIG. 2 is a side view, along II-II of FIG. 1, of this same screening screen, it being observed that, in this figure, another embodiment of the control system has been illustrated, this time using a translation system in place of the rotary system of Figure 1 (the rest of the device being otherwise identical).
- Figures 1 and 2 show the screen for masking the projector of the invention.
- This screen is located inside the projector and interposed in the beam, in the vicinity of the second focal point of an ellipsoidal mirror, in order to define a cut, the edge of the blackout screen having the shape of the profile. cutoff selected.
- the other elements of the projector such as the light source, the mirror, the closing glass, etc. are in themselves well known and will not be described in detail.
- the projector is in particular a projector of the "elliptical" type, because in such a type of projector the only possible solution for defining a cut-off consists in interposing a screening screen in the beam, in close proximity to the light source.
- the reference 1 designates a fixed element of the blackout screen, which will be called hereinafter "blade” and which, taken in isolation, is of the same type as the blackout screens of specialized projectors with single cut-off.
- blade a fixed element of the blackout screen
- FIG. 1 it is a screen defining a cutout for an American type passing beam, that is to say with two horizontal parts offset on either side of the axis. central and an inclined transition part between these horizontal parts.
- a movable element 2 is provided, which will be called hereinafter “shutter”, intended to partially obscure the blade and thus modify the profile of the cut.
- the blade 1 and the flap 2 are two essentially vertical elements, flat and arranged one against the other, therefore substantially in the same plane, which makes it possible to define a cut with excellent sharpness.
- the blade 1 is integral with a fixed part 3 such as a support piece placed inside the projector, while the shutter 2, which is extended by a horizontal tab 4, on a vertical movable rod 5.
- the shutter 2 is fixed by the tab 4 on the rod 5 for example by means of a nut 6 tightened on a threaded end 7 of the rod 5.
- the lower end of the rod carries the actuator means making it possible to move the flap in vertical translation.
- FIG. 1 it is a rotary deflection system in which the lower end 8 of the rod 5 cooperates with a ring 9 which can rotate in axial rotation around the axis ⁇ and provided , on its face turned towards the end 8, of an inner peripheral ramp 10 coming in contact with the region 11 of the end 8 forming a cam.
- This ring and cam deflection system makes it possible to transform the axial rotational movement of the ring 9 into a vertical translational movement of the rod 5.
- a helical spring 12 placed in compression between the tab 4 and the fixed support 3 ensures permanent contact between the ramp 10 and the cam 11.
- the flap 2 When one operates a rotation of the ring 9, the flap 2 is biased by the spring 12 to move in vertical translation (arrow 13) to a raised position, and gradually obscure the right part (with the conventions of the figure) blade 1.
- stops 14, 15 allowing precise definition of an end of travel for this translational movement, so that the final position of the flap 2 (illustrated in dashed lines in 16) is precisely in alignment with the horizontal part. 17 of the edge of the blade 1. It is thus possible to define, in the upper position of the flap 2, a horizontal cut of excellent quality, entirely comparable to that which would have been obtained with a specialized cut-off projector. invariable.
- the ramp and cam device must at the end of travel completely release the shutter, that is to say that the stroke x1 of this ramp device and cam must be slightly greater than the total travel x2 of shutter 2 between its two extreme positions.
- actuator means comprise a translation control, for example a pull tab disposed on the side of the projector instead of a rotating ring.
- the lower end 8 ′ of the rod 5 is configured so as to cooperate with a part such as a fork 9 ′ comprising a ramp 10 ′, for example by means of a homologous surface 11 ′ forming a cam, so as to selectively release the shutter 2 so that it adopts its raised position, against the stops 14, 15, under the action of the spring 12, and bring the shutter into its retracted position against the force of the spring.
- the presence of the spring 12 and the stops 14 and 15 ensures, on the one hand, a very good resistance to vibrations and, on the other hand, a very good cut quality, since this is defined by the position - invariable - of these stops and not by an end of stroke of the free end of a moving part, necessarily subject to mechanical play and changes over time.
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
L'invention concerne un projecteur à faisceau coupé, notamment pour véhicule automobile.The invention relates to a beam projector, in particular for a motor vehicle.
Un tel projecteur comprend essentiellement une source lumineuse et un réflecteur définissant ensemble un faisceau lumineux, ainsi qu'un moyen pour définir la coupure, c'est-à-dire pour définir la délimitation entre la zone éclairée et la zone sombre, du diagramme d'éclairement du projecteur, comme cela est requis en particulier pour les projecteurs de croisement et les projecteurs antibrouillard.Such a projector essentially comprises a light source and a reflector together defining a light beam, as well as a means for defining the cut-off, that is to say for defining the delimitation between the illuminated area and the dark area, of the diagram of 'headlamp illumination, as required in particular for dipped headlights and fog lamps.
En particulier dans le cas des projecteurs dits "elliptiques", c'est-à-dire dont le réflecteur est formé d'une partie d'ellipsoïde de révolution, le moyen de définition de coupure peut être constitué d'un écran d'occultation interposé dans le faisceau, l'arête de cet écran définissant le profil de coupure souhaité.In particular in the case of so-called "elliptical" headlamps, that is to say the reflector of which is formed from a part of ellipsoid of revolution, the means for defining the cut-off may consist of a screening screen. interposed in the beam, the edge of this screen defining the desired cutoff profile.
L'objet principal de l'invention est de proposer un projecteur de ce type permettant de modifier sélectivement le profil de coupure, c'est-à-dire, en d'autres termes, permettant de choisir sur un seul et même projecteur deux coupures différentes en fonction des besoins.The main object of the invention is to propose a headlamp of this type making it possible to selectively modify the cut-off profile, that is to say, in other words, making it possible to choose two single cut-outs on one and the same headlamp. different as needed.
Cette situation peut notamment se présenter lorsque l'on dispose d'un projecteur à coupure pour conduite à droite et que l'on souhaite temporairement modifier le faisceau pour une conduite à gauche, ou inversement : ainsi la coupure normalisée européenne, relevée dans le demi-plan opposé au côté de véhicules venant en sens inverse, doit être modifiée lors du passage d'un pays à circulation à droite à un pays à circulation à gauche, ou inversement.This situation can arise in particular when you have a headlight cutout for right-hand drive and you want to temporarily modify the beam for left-hand drive, or vice versa: thus the European standard cutoff, noted in half -plan opposite to the side of oncoming vehicles, must be modified when switching from a country with right-hand traffic to a country with left-hand traffic, or vice versa.
Dans ce cas particulier, il est usuel, avec les projecteurs traditionnels à réflecteur parabolique, de coller sur la glace de fermeture un cache opaque permettant d'occulter la partie relevée du faisceau, transformant ainsi par des moyens simples la coupure relevée en une coupure droite. Cette solution est cependant impraticable dans le cas de projecteurs de type elliptique, compte tenu de la conception différente de ces derniers où la coupure est définie à l'intérieur du projecteur par l'écran d'occultation, et où il n'est pas possible d'intervenir au niveau de la glace de fermeture sur la forme du faisceau.In this particular case, it is usual, with traditional projectors with parabolic reflector, to stick on the closing glass an opaque cover allowing to hide the raised part of the beam, thus transforming by simple means the cut cut into a straight cut. This solution is however impracticable in the case of elliptical type projectors, given the different design of the latter where the cutoff is defined inside the projector by the blackout screen, and where it is not possible to intervene at the level of the closing glass on the shape of the beam.
Une autre application possible est celle d'un projecteur universel commutable entre une coupure pour faisceau de croisement (coupure dissymétrique avec relèvement du côté opposé aux véhicules venant en sens inverse) et une coupure pour faisceau antibrouillard (coupure uniformément droite et horizontale), susceptible de remplacer deux projecteurs spécialisés à profil de coupure unique.Another possible application is that of a universal headlamp switchable between a cut for passing beam (asymmetrical cut with raising on the side opposite to oncoming vehicles) and a cut for fog beam (cut uniformly straight and horizontal), capable of replace two specialized projectors with a single cut-off profile.
Des projecteurs permettant de modifier sélectivement le profil de coupure ont déjà été proposés, par exemple par EP-A-0 294 589 et DE-A 39 03 631. En particulier, EP-A-0 294 589 enseigne un projecteur selon le préambule de la revendication 1.Projectors making it possible to selectively modify the cutting profile have already been proposed, for example by EP-A-0 294 589 and DE-A 39 03 631. In particular, EP-A-0 294 589 teaches a projector according to the preamble of
Les dispositifs décrits dans ces deux documents se révèlent cependant difficiles à mettre en oeuvre, la fragilité mécanique du système pivotant étant difficilement compatible avec les contraintes de robustesse, de résistance aux vibrations et de durée de vie requises pour un projecteur automobile.The devices described in these two documents prove however difficult to implement, the mechanical fragility of the pivoting system being hardly compatible with the constraints of robustness, resistance to vibration and lifetime required for an automotive headlamp.
Un autre document, le DE-A-35 28 820, décrit également un projecteur permettant de modifier sélectivement le profil de coupure, mais il met en oeuvre des moyens différents. Ces moyens comprennent, ici encore, un élément fixe et un élément mobile définissant en combinaison la coupure, mais dans la proposition de cette antériorité ces deux éléments sont éloignés l'un de l'autre dans la direction de l'axe du faisceau. L'inconvénient est qu'il faut donner à l'un des deux éléments (l'élément fixe, dans l'exemple illustré par ce document) une forme courbe afin de compenser le décalage axial par rapport au foyer et agir de manière sensiblement uniforme sur toute la largeur du faisceau. En pratique, la coupure définie par ce dispositif présente une mauvaise définition, donc procure une qualité de faisceau inférieure à celle que l'on aurait avec un projecteur spécialisé à coupure unique.Another document, DE-A-35 28 820, also describes a projector making it possible to selectively modify the cut-off profile, but it implements different means. These means include, here again, a fixed element and a mobile element defining in combination the cutoff, but proposition of this anticipation these two elements are distant from each other in the direction of the axis of the beam. The disadvantage is that it is necessary to give one of the two elements (the fixed element, in the example illustrated by this document) a curved shape in order to compensate for the axial offset relative to the focus and act in a substantially uniform manner across the entire beam width. In practice, the cut defined by this device has a poor definition, therefore provides a beam quality lower than that which would be with a specialized projector with single cut.
De plus, ce document ne donne aucune indication sur les moyens mécaniques à mettre en oeuvre pour déplacer le cache mobile alors que, comme on l'a vu à propos des deux documents précédents, il s'agit là d'un problème important, qu'il est indispensable de résoudre si l'on veut pouvoir disposer d'un projecteur utilisable dans des conditions réelles de fonctionnement (vibrations, vieillissement, etc.) et réalisable à l'échelle industrielle.In addition, this document gives no indication of the mechanical means to be used to move the movable cover, whereas, as we have seen in connection with the two previous documents, this is an important problem, which 'It is essential to resolve if we want to have a projector usable under real operating conditions (vibrations, aging, etc.) and achievable on an industrial scale.
L'invention a pour objet de pallier ces diverses difficultés et limitations de l'art antérieur, en proposant un projecteur à faisceau coupé :
- susceptible de produire sélectivement deux profils de coupure différents,
- qui procure une définition de coupure essentiellement équivalente à celle que l'on obtiendrait avec un projecteur spécialisé à coupure unique,
- qui soit mécaniquement robuste, peu sensible aux vibrations, de grande fiabilité et longévité, avec une définition précise et stable dans le temps des coupures formées, et
- qui soit facile à industrialiser, grâce à une structure mécanique simple et économique.
- capable of selectively producing two different cut profiles,
- which provides a cut-off definition essentially equivalent to that which would be obtained with a specialized single-cut projector,
- which is mechanically robust, not very sensitive to vibrations, of high reliability and longevity, with a precise and stable definition over time of the cuts formed, and
- which is easy to industrialize, thanks to a simple and economical mechanical structure.
Selon l'invention, il est proposé un projecteur tel que défini dans la revendication 1.According to the invention, there is provided a headlight as defined in
Des aspects préférés, mais non limitatifs, du projecteur selon l'invention sont définis dans les sous-revendications.Preferred, but not limiting, aspects of the projector according to the invention are defined in the subclaims.
D'autres caractéristiques, buts et avantages de l'invention apparaîtront à la lecture de la description ci-dessous d'un exemple de réalisation, faite en référence aux dessins annexés.Other characteristics, objects and advantages of the invention will appear on reading the description below of an exemplary embodiment, made with reference to the accompanying drawings.
La figure 1 est une vue de face, selon I-I de la figure 2, de l'écran d'occultation du projecteur de l'invention, équipé d'un système de commande rotatif.Figure 1 is a front view, along I-I of Figure 2, of the screen of the projector of the invention, equipped with a rotary control system.
La figure 2 est une vue de côté, selon II-II de la figure 1, de ce même écran d'occultation, étant observé que, sur cette figure, on a illustré une autre forme de réalisation du système de commande, utilisant cette fois un système à translation en lieu et place du système rotatif de la figure 1 (le reste du dispositif étant par ailleurs identique).FIG. 2 is a side view, along II-II of FIG. 1, of this same screening screen, it being observed that, in this figure, another embodiment of the control system has been illustrated, this time using a translation system in place of the rotary system of Figure 1 (the rest of the device being otherwise identical).
Les figures 1 et 2 montrent l'écran d'occultation du projecteur de l'invention. Cet écran est situé à l'intérieur du projecteur et interposé dans le faisceau, au voisinage du second foyer d'un miroir du genre ellipsoïdal, afin de définir une coupure, l'arête de l'écran d'occultation ayant la forme du profil de coupure choisi. Les autres éléments du projecteur, tels que la source lumineuse, le miroir, la glace de fermeture etc., sont en eux-mêmes bien connus et ne seront pas décrits en détail. Le projecteur est notamment un projecteur de type "elliptique", car dans un tel type de projecteur la seule solution possible pour définir une coupure consiste à interposer un écran d'occultation dans le faisceau, à proximité directe de la source lumineuse.Figures 1 and 2 show the screen for masking the projector of the invention. This screen is located inside the projector and interposed in the beam, in the vicinity of the second focal point of an ellipsoidal mirror, in order to define a cut, the edge of the blackout screen having the shape of the profile. cutoff selected. The other elements of the projector, such as the light source, the mirror, the closing glass, etc. are in themselves well known and will not be described in detail. The projector is in particular a projector of the "elliptical" type, because in such a type of projector the only possible solution for defining a cut-off consists in interposing a screening screen in the beam, in close proximity to the light source.
La référence 1 désigne un élément fixe de l'écran d'occultation, que l'on appellera par la suite "lame" et qui, pris isolément, est du même type que les écrans d'occultation des projecteurs spécialisés à coupure unique.
Dans l'exemple de la figure 1, il s'agit d'un écran définissant une coupure pour faisceau de croisement de type américain, c'est-à-dire avec deux parties horizontales décalées de part et d'autre de l'axe central et une partie de transition inclinée entre ces parties horizontales.The
In the example of FIG. 1, it is a screen defining a cutout for an American type passing beam, that is to say with two horizontal parts offset on either side of the axis. central and an inclined transition part between these horizontal parts.
Pour modifier cette coupure, on prévoit un élément mobile 2, que l'on appellera par la suite "volet", destiné à occulter partiellement la lame et modifier ainsi le profil de la coupure.To modify this cut, a
La lame 1 et le volet 2 sont deux éléments essentiellement verticaux, plats et disposés l'un contre l'autre, donc sensiblement dans un même plan, ce qui permet de définir une coupure avec une excellente netteté. La lame 1 est solidaire d'une partie fixe 3 tel qu'une pièce de support placée à l'intérieur du projecteur, tandis que le volet 2, qui se prolonge par une patte horizontale 4, sur une tige mobile verticale 5. Le volet 2 est fixé par la patte 4 sur la tige 5 par exemple au moyen d'un écrou 6 serré sur une extrémité filetée 7 de la tige 5.The
L'extrémité inférieure de la tige porte les moyens actionneurs permettant de déplacer en translation verticale le volet.The lower end of the rod carries the actuator means making it possible to move the flap in vertical translation.
Dans le mode de réalisation illustré en figure 1, il s'agit d'un système rotatif de renvoi dans lequel l'extrémité inférieure 8 de la tige 5 coopère avec une bague 9 pouvant tourner en rotation axiale autour de l'axe Δ et pourvue, sur sa face tournée vers l'extrémité 8, d'une rampe périphérique intérieure 10 venant en contact avec la région 11 de l'extrémité 8 formant came. Ce système de renvoi à bague et came permet de transformer le mouvement de rotation axiale de la bague 9 en un mouvement de translation verticale de la tige 5. Un ressort hélicoïdal 12 (ou tout autre moyen élastique) mis en compression entre la patte 4 et le support fixe 3 permet d'assurer un contact permanent entre la rampe 10 et la came 11.In the embodiment illustrated in FIG. 1, it is a rotary deflection system in which the
Lorsque l'on opère une rotation de la bague 9, le volet 2 est sollicité par le ressort 12 pour se déplacer en translation verticale (flèche 13) vers une position relevée, et progressivement occulter la partie droite (avec les conventions de la figure) de la lame 1.When one operates a rotation of the
Il est prévu des butées 14, 15 permettant de définir avec précision une fin de course pour ce mouvement de translation, de sorte que la position finale du volet 2 (illustrée en tiretés en 16) se situe précisément dans l'alignement de la partie horizontale 17 de l'arête de la lame 1. On peut ainsi définir avec, dans la position supérieure du volet 2, une coupure horizontale d'excellente qualité, tout à fait comparable à celle que l'on aurait obtenu avec un projecteur spécialisé à coupure invariable.There are
Bien entendu, pour que le volet soit effectivement sollicité contre les butées 14, 15, le dispositif à rampe et came doit en fin de course libérer complètement le volet, c'est-à-dire que la course x₁ de ce dispositif à rampe et came doit être être légèrement supérieure à la course totale x₂ du volet 2 entre ses deux positions extrêmes.Of course, for the shutter to be effectively biased against the
Lorsque la bague est tournée dans la direction opposée, elle sollicite le volet 2 à l'encontre de la force du ressort 2, pour ramener le volet dans sa position escamotée.When the ring is turned in the opposite direction, it urges the
Sur la figure 2, on a représenté une variante de réalisation, dans laquelle les moyens actionneurs comprennent une commande à translation, par exemple une tirette disposée sur le côté du projecteur au lieu d'une bague tournante.In Figure 2, there is shown an alternative embodiment, in which the actuator means comprise a translation control, for example a pull tab disposed on the side of the projector instead of a rotating ring.
Dans ce cas, l'extrémité inférieure 8' de la tige 5 est configurée de manière à coopérer avec une pièce telle qu'une fourchette 9' comportant une rampe 10', par exemple au moyen d'une surface homologue 11' formant came, de manière à sélectivement libérer le volet 2 pour qu'il adopte sa position relevée, contre les butées 14, 15, sous l'action du ressort 12, et amener le volet dans sa position escamotée à l'encontre de la force du ressort.In this case, the
Dans l'un ou l'autre cas on peut ainsi, par une manoeuvre très simple (rotation d'une bague ou manoeuvre d'une tirette), modifier sélectivement la coupure produite par le projecteur, par exemple, dans le mode de réalisation illustré, transformer une coupure de croisement, relevée d'un côté de l'axe, en une coupure droite, par exemple pour obtenir un faisceau qui ne risque pas de gêner les automobilistes venant en sens inverse en cas de passage du véhicule d'un pays à circulation à droite à un pays à circulation à gauche, ou inversement.In either case it is thus possible, by a very simple operation (rotation of a ring or operation of a pull tab), to selectively modify the cut produced by the projector, for example, in the illustrated embodiment , transform a crossing cut, raised on one side of the axis, into a straight cut, for example to obtain a beam which does not risk obstructing oncoming motorists in the event of the passage of the vehicle from a country right-hand traffic to a left-hand country, or vice versa.
On voit également que les moyens mécaniques mis en oeuvre sont, d'une part, très efficaces et, d'autre part, très simples, donc faciles et peu coûteux à industrialiser et procurant une excellente fiabilité et une grande longévité.It can also be seen that the mechanical means used are, on the one hand, very effective and, on the other hand, very simple, therefore easy and inexpensive to industrialize and providing excellent reliability and a long service life.
De plus, la présence du ressort 12 et des butées 14 et 15 permet d'assurer, d'une part, une très bonne tenue aux vibrations et, d'autre part, une très bonne qualité de coupure, puisque celle-ci est définie par la position - invariable - de ces butées et non par une fin de course de l'extrémité libre d'une pièce mobile, nécessairement sujette à des jeux mécaniques et à des modifications au fil du temps.In addition, the presence of the
Claims (5)
caractérisé en ce que le volet est mobile en translation suivant une direction généralement verticale (Δ), essentiellement perpendiculaire à la direction moyenne de l'arête de la lame, en étant solidaire d'une tige support coulissante (5), en ce que les moyens actionneurs sollicitent le volet seulement en direction de sa position escamotée et en ce qu'il est prévu des moyens élastiques (12) pour solliciter le volet en direction de la position relevée, contre des moyens formant butée de référence (14, 15).A beam cut projector, in particular for a motor vehicle, comprising a light source and a reflector, in particular an elliptical one, together defining a light beam, as well as a screening screen interposed in this beam so as to define a cut, in which the screening screen comprises, extending substantially in the same plane, a fixed blade (1) and a movable flap (2), the latter being movable, between a retracted position and a raised position, so that the 'edge of the blade and the edge of the shutter selectively define in combination, depending on the position of the shutter, two different cutting profiles, as well as actuator means (9-11; 9'-11') of shutter for moving the shutter between the two aforementioned positions,
characterized in that the flap is movable in translation in a generally vertical direction (Δ), essentially perpendicular to the mean direction of the edge of the blade, being integral with a sliding support rod (5), in that the actuator means urge the flap only in the direction of its retracted position and in that there are elastic means (12) for urging the flap in the direction of the raised position, against means forming a reference stop (14, 15).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9407709 | 1994-06-23 | ||
| FR9407709A FR2721685B1 (en) | 1994-06-23 | 1994-06-23 | Automotive headlamp, in particular with elliptical reflector, producing a beam capable of two selectively switchable cuts. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0688999A1 true EP0688999A1 (en) | 1995-12-27 |
| EP0688999B1 EP0688999B1 (en) | 2000-05-24 |
Family
ID=9464557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95401495A Expired - Lifetime EP0688999B1 (en) | 1994-06-23 | 1995-06-23 | Vehicle headlight having in particular an elliptical reflector and emitting a beam having two selectively switchable cut-off lines |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0688999B1 (en) |
| DE (1) | DE69517095T2 (en) |
| FR (1) | FR2721685B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2796448A1 (en) * | 1999-07-13 | 2001-01-19 | Valeo Vision | PROJECTOR FOR A MOTOR VEHICLE WITH A MULTI-POSITION COVER |
| EP1160507A1 (en) | 2000-05-31 | 2001-12-05 | Valeo Vision | Motor vehicle headlamp comprising a light screen actuated by a return spring |
| FR2809803A1 (en) | 2000-05-31 | 2001-12-07 | Valeo Vision | Motor vehicle headlamp with a mobile screen, uses lever lying parallel to lamp axis to rotate screen through crank, and has studs under lever engaging in holes to lock in position |
| EP1201988A3 (en) * | 2000-10-25 | 2004-06-23 | Zizala Lichtsysteme GmbH | Vehicle headlamp |
| EP1283390A3 (en) * | 2001-08-10 | 2006-05-10 | Ichikoh Industries, Ltd. | Two-light headlamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3528820A1 (en) | 1985-08-10 | 1987-02-12 | Bosch Gmbh Robert | HEADLIGHTS, IN PARTICULAR HEADLIGHTS FOR LOW BEAM OR FOG LIGHT, OF VEHICLES |
| EP0294589A2 (en) | 1987-06-12 | 1988-12-14 | Robert Bosch Gmbh | Dipped light headlamp |
| DE3903631C1 (en) | 1989-02-08 | 1990-07-05 | Hella Kg Hueck & Co, 4780 Lippstadt, De | |
| EP0429922A1 (en) * | 1989-12-01 | 1991-06-05 | Hella KG Hueck & Co. | Projector-type headlamp |
| EP0573994A2 (en) * | 1992-06-12 | 1993-12-15 | Stanley Electric Co., Ltd. | Projector type lighting device |
-
1994
- 1994-06-23 FR FR9407709A patent/FR2721685B1/en not_active Expired - Fee Related
-
1995
- 1995-06-23 EP EP95401495A patent/EP0688999B1/en not_active Expired - Lifetime
- 1995-06-23 DE DE69517095T patent/DE69517095T2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3528820A1 (en) | 1985-08-10 | 1987-02-12 | Bosch Gmbh Robert | HEADLIGHTS, IN PARTICULAR HEADLIGHTS FOR LOW BEAM OR FOG LIGHT, OF VEHICLES |
| EP0294589A2 (en) | 1987-06-12 | 1988-12-14 | Robert Bosch Gmbh | Dipped light headlamp |
| DE3903631C1 (en) | 1989-02-08 | 1990-07-05 | Hella Kg Hueck & Co, 4780 Lippstadt, De | |
| EP0429922A1 (en) * | 1989-12-01 | 1991-06-05 | Hella KG Hueck & Co. | Projector-type headlamp |
| EP0573994A2 (en) * | 1992-06-12 | 1993-12-15 | Stanley Electric Co., Ltd. | Projector type lighting device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2796448A1 (en) * | 1999-07-13 | 2001-01-19 | Valeo Vision | PROJECTOR FOR A MOTOR VEHICLE WITH A MULTI-POSITION COVER |
| EP1160507A1 (en) | 2000-05-31 | 2001-12-05 | Valeo Vision | Motor vehicle headlamp comprising a light screen actuated by a return spring |
| FR2809803A1 (en) | 2000-05-31 | 2001-12-07 | Valeo Vision | Motor vehicle headlamp with a mobile screen, uses lever lying parallel to lamp axis to rotate screen through crank, and has studs under lever engaging in holes to lock in position |
| FR2809801A1 (en) | 2000-05-31 | 2001-12-07 | Valeo Vision | PROJECTOR FOR MOTOR VEHICLE WITH OCCULTATION SCREEN ASSOCIATED WITH A RETURN SPRING |
| EP1201988A3 (en) * | 2000-10-25 | 2004-06-23 | Zizala Lichtsysteme GmbH | Vehicle headlamp |
| EP1283390A3 (en) * | 2001-08-10 | 2006-05-10 | Ichikoh Industries, Ltd. | Two-light headlamp |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2721685B1 (en) | 1996-09-13 |
| EP0688999B1 (en) | 2000-05-24 |
| DE69517095T2 (en) | 2000-11-02 |
| DE69517095D1 (en) | 2000-06-29 |
| FR2721685A1 (en) | 1995-12-29 |
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