EP0690261A1 - Headlamp comprising an ellipsoidal light reflector and a pivotable shade - Google Patents

Headlamp comprising an ellipsoidal light reflector and a pivotable shade Download PDF

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Publication number
EP0690261A1
EP0690261A1 EP95401528A EP95401528A EP0690261A1 EP 0690261 A1 EP0690261 A1 EP 0690261A1 EP 95401528 A EP95401528 A EP 95401528A EP 95401528 A EP95401528 A EP 95401528A EP 0690261 A1 EP0690261 A1 EP 0690261A1
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EP
European Patent Office
Prior art keywords
arm
projector
mirror
blade
legs
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Granted
Application number
EP95401528A
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German (de)
French (fr)
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EP0690261B1 (en
Inventor
Gérard Billot
Alain Reynal
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Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP0690261A1 publication Critical patent/EP0690261A1/en
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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
    • 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
    • F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic

Definitions

  • the present invention relates generally to headlamps of the elliptical type for motor vehicles.
  • a projector of this kind conventionally comprises an elliptical mirror of the first focus of which is placed the filament of a lamp.
  • a converging lens is focused on the second focus of the mirror, and a lens closes the projector.
  • the lens may be formed by the lens itself.
  • a mask is placed in the vicinity of the second focal point of the mirror, one edge of which defines the profile of the cut and which obscures the part of the radiation that would otherwise propagate above this cutoff.
  • a difficulty of this type of projector compared to the parabolic type projectors lies in the difficulty that there is in modifying the profile of the cut. Such a modification may be desirable in particular when a headlight, designed for example for a right-hand traffic direction, must form a beam suitable for left-hand traffic. It may also be desirable to produce a universal headlamp capable of selectively generating a passing beam or an anti-fog beam.
  • this adaptation is carried out by affixing on the glass of the projector an adhesive mask masking part of the radiation of the side of the raised part of the cut so as to obtain a generally straight cut.
  • Also known from GB-A-2 273 555 is an elliptical projector, the cover of which is of an entirely different type, with a part rotating around a horizontal axis and parallel to the optical axis, and locking means. are provided to bring the rotating part of the cover selectively into a first or a second different position, to obtain two different beams, with good stability and good precision.
  • the present invention proposes to improve the type of projector known from DE-A-34 25 867, by giving it the advantages of the projector known from GB-A-2 273 355.
  • the tilting cover aims at means making it possible to give the tilting cover a particularly well-defined position in one or other of its two positions, as well as means for preventing the cover from risking occupying an intermediate position between the two positions allowing respectively to obtain the two cut beams.
  • Another important object of the present invention is to provide a tilting cover of the type taught in DE-A-34 25 867, which automatically ensures the coming of the tilting cover in a predetermined position in the event of failure of the positioning or locking means of the hidden.
  • the present invention relates to a motor vehicle headlamp having the features of claim 1 appended.
  • an elliptical type projector which comprises a lamp 10, a mirror 20 of the ellipsoidal type and a lens 40, as well as a closing glass not shown.
  • the filament of the lamp 10 is placed in the vicinity of the first focus F1 of the mirror 20.
  • the focal plane PF of the lens 40, coaxial with the mirror 20, passes through the second focus F2 of the mirror.
  • a mobile cover device is located between the mirror 20 and the lens 30, so as to selectively define, in the focal plane PF or in its vicinity, a first cover with a first cutting profile and a second cover with a second cutting profile.
  • These two covers are defined by a piece 31 rigidly mounted on a shaft 32 extending horizontally and perpendicular to the optical axis xx of the projector, at a certain distance below said axis.
  • this shaft indicated at 32a and 32b, rotate in two bearings respectively 33a and 33b formed by bending in the edges of a metal piece 33 forming an extension, provided in a conventional manner at the transition between the front edge of the cheeks 21 of the mirror and the rear edge of another extension 41 forming a lens holder.
  • the part 31, in the position illustrated in FIG. 2, has an upper profile defined by three straight segments 31a, 31b, 31c, arranged as illustrated, so as to generate a crossing light beam for right-hand traffic, that is that is to say with a raising of the cutoff, defined by the segments 31a and 31b, in the right half of the beam.
  • the lower profile of the part 31 is also defined by three straight lines 31d, 31e, 31f, defining, when the part 31 is turned 180 ° around the shaft 32, a cutting profile of a passing beam for left hand traffic.
  • the end 32b projects laterally beyond its bearing 33b, and on the projecting part is crimped an operating arm 34.
  • This arm comprises at a first end the opening surrounded by a sleeve 34b for crimping, and at the opposite end a grip part defined by two legs 34a folded 90 ° to the side. It is observed that the arm 34 extends vertically downwards in the position of the part 31 illustrated in FIG. 2, corresponding to a direction of circulation on the right.
  • the arm 34 is able to cooperate with stops to define two vertical stable positions, corresponding to the two positions of the part 31 corresponding to the cuts to be generated.
  • two abutments are provided in the form of slightly protruding tabs 22, 23, extend to the side from the side edge of an anterior flange 24 forming part of the mirror, and two second stops in the form of legs 33c, 33d also extending to the side, at the same height as the legs 22, 23, from the lateral edge of the piece forming a riser 33.
  • the intervals between the legs 22, 33c on the one hand and 23, 33d on the other hand, are equal or very slightly wider than the width of the arm.
  • the material of the arm is chosen so as to give it a certain elasticity, so that it can be, by acting on its grip part 34a, slightly apart towards the outside from the position illustrated in FIGS. 3 and 4, to be selectively trapped either between the two stops 22, 33c (high position), or between the two stops 23, 33d (low position).
  • the part 31 cannot occupy an intermediate position between the two positions defining the two cut beams. More precisely, as soon as the arm 34 is no longer trapped between the two upper stops 22, 33c, the part tends to tilt towards the position illustrated in FIGS. 2, 4 and 5, that is to say that which corresponds to a right-hand traffic direction (in the case where the vehicle is intended mainly for the right).
  • the return of the part 31 to its privileged position can be assisted by a spring.

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

Abstract

The lamp is installed with its filament at one focus of an ellipsoidal reflector whose other focus lies in the focal plane of a coaxial lens. The shape of the beam depends upon the position of a movable mask (30) formed of a vane (31) with suitably shaped upper and lower edges, fixed to a shaft (32) between two bearings (33a,33b). The two stable positions are defined by stops (e.g. 23) inhibiting movement of an arm (34) on one end (32b) of the shaft. The vane is rotatable through 180 degrees for dipped beam driving on the left instead of the right. <IMAGE>

Description

La présente invention concerne d'une façon générale les projecteurs de type elliptique pour véhicules automobiles.The present invention relates generally to headlamps of the elliptical type for motor vehicles.

Un projecteur de ce genre comprend classiquement un miroir du genre elliptique au premier foyer duquel est placé le filament d'une lampe. Une lentille convergente est focalisée sur le second foyer du miroir, et une glace ferme le projecteur. Dans certains cas, la lentille peut être constituée par la glace elle-même.A projector of this kind conventionally comprises an elliptical mirror of the first focus of which is placed the filament of a lamp. A converging lens is focused on the second focus of the mirror, and a lens closes the projector. In some cases, the lens may be formed by the lens itself.

Lorsqu'un tel projecteur doit engendrer un faisceau à coupure, tel qu'un faisceau de croisement ou un faisceau anti-brouillard, on place dans au voisinage du second foyer du miroir un cache dont un bord définit le profil de la coupure et qui occulte la partie du rayonnement qui autrement se propagerait au-dessus de cette coupure.When such a headlamp must generate a cut-off beam, such as a passing beam or an anti-fog beam, a mask is placed in the vicinity of the second focal point of the mirror, one edge of which defines the profile of the cut and which obscures the part of the radiation that would otherwise propagate above this cutoff.

Une difficulté de ce type de projecteur par rapport aux projecteurs de type parabolique réside dans la difficulté qu'il y a à modifier le profil de la coupure. Une telle modification peut être souhaitable notamment lorsqu'un projecteur, conçu par exemple pour un sens de circulation à droite, doit former un faisceau adapté à une circulation à gauche. Elle peut également être souhaitable pour réaliser un projecteur universel capable d'engendrer sélectivement un faisceau de croisement ou un faisceau anti-brouillard.A difficulty of this type of projector compared to the parabolic type projectors lies in the difficulty that there is in modifying the profile of the cut. Such a modification may be desirable in particular when a headlight, designed for example for a right-hand traffic direction, must form a beam suitable for left-hand traffic. It may also be desirable to produce a universal headlamp capable of selectively generating a passing beam or an anti-fog beam.

Dans un projecteur parabolique, et pour une coupure européenne en "V" avec relèvement de la coupure du côté opposé à la circulation en sens inverse, cette adaptation s'effectue en apposant sur la glace du projecteur un cache adhésif masquant une partie du rayonnement du côté de la partie relevée de la coupure de manière à obtenir une coupure généralement droite.In a parabolic projector, and for a European "V" cut with raising of the cut on the side opposite to the circulation in opposite direction, this adaptation is carried out by affixing on the glass of the projector an adhesive mask masking part of the radiation of the side of the raised part of the cut so as to obtain a generally straight cut.

Dans un projecteur elliptique, ce type d'adaptation est impossible, le faisceau étant formé par projection de l'image formée dans le plan focal de la lentille.In an elliptical projector, this type of adaptation is impossible, the beam being formed by projection of the image formed in the focal plane of the lens.

La solution, connue en soi, consiste alors à intervenir sur le cache pour en modifier le profil de coupure.The solution, known in itself, then consists in intervening on the cover to modify the cut profile.

On connaît déjà par DE-A-34 25 867 un projecteur selon le préambule de la revendication 1.DE-A-34 25 867 already discloses a headlight according to the preamble of claim 1.

On connaît également par GB-A-2 273 555 un projecteur elliptique dont le cache est d'un type tout à fait différent, avec une partie tournant autour d'un axe horizontal et parallèle à l'axe optique, et des moyens de verrouillage sont prévus pour amener la partie tournante du cache sélectivement dans une première ou une seconde positions différentes, pour obtenir deux faisceaux différents, avec une bonne stabilité et une bonne précision.Also known from GB-A-2 273 555 is an elliptical projector, the cover of which is of an entirely different type, with a part rotating around a horizontal axis and parallel to the optical axis, and locking means. are provided to bring the rotating part of the cover selectively into a first or a second different position, to obtain two different beams, with good stability and good precision.

La présente invention se propose de perfectionner le type de projecteur connu par DE-A-34 25 867, en lui donnant les avantages du projecteur connu par GB-A-2 273 355.The present invention proposes to improve the type of projector known from DE-A-34 25 867, by giving it the advantages of the projector known from GB-A-2 273 355.

Plus précisément, elle vise des moyens permettant de donner au cache basculant une position particulièrement bien définie dans l'une ou l'autre de ses deux positions, ainsi que des moyens pour éviter que le cache ne risque d'occuper une position intermédiaire entre les deux positions permettant respectivement d'obtenir les deux faisceaux coupés.More specifically, it aims at means making it possible to give the tilting cover a particularly well-defined position in one or other of its two positions, as well as means for preventing the cover from risking occupying an intermediate position between the two positions allowing respectively to obtain the two cut beams.

Un autre objet important de la présente invention est de proposer un cache basculant du type enseigné dans DE-A-34 25 867, qui assure automatiquement la venue du cache basculant dans une position prédéterminée en cas de défaillance des moyens de positionnement ou de verrouillage du cache.Another important object of the present invention is to provide a tilting cover of the type taught in DE-A-34 25 867, which automatically ensures the coming of the tilting cover in a predetermined position in the event of failure of the positioning or locking means of the hidden.

Ainsi la présente invention concerne un projecteur de véhicule automobile ayant les caractéristiques de la revendication 1 annexée.Thus the present invention relates to a motor vehicle headlamp having the features of claim 1 appended.

Des aspects préférés, mais non limitatifs, du projecteur selon l'invention sont définis dans les sous-revendications.Preferred, but not limiting, aspects of headlamp according to the invention are defined in the subclaims.

D'autres aspects, buts et avantages de la présente invention apparaîtront mieux à la lecture de la description détaillée suivante d'une forme de réalisation préférée de celle-ci, donnée à titre d'exemple non limitatif et faite en référence au dessin annexé, sur lequel :

  • la figure 1 est une vue en section verticale axiale d'un projecteur selon l'invention, selon la flèche A de la figure 2,
  • la figure 2 est une vue de face d'un dispositif à cache mobile du projecteur de la figure 1,
  • la figure 3 est une section selon la flèche B de la figure 2,
  • la figure 4 est une section selon la flèche C de la figure 2, et
  • la figure 5 est une vue en élévation selon la flèche F de la figure 2.
Other aspects, aims and advantages of the present invention will appear better on reading the following detailed description of a preferred embodiment thereof, given by way of nonlimiting example and made with reference to the accompanying drawing, on which :
  • FIG. 1 is a view in axial vertical section of a headlight according to the invention, according to arrow A in FIG. 2,
  • FIG. 2 is a front view of a device with a movable cover for the projector of FIG. 1,
  • FIG. 3 is a section along arrow B in FIG. 2,
  • FIG. 4 is a section along arrow C in FIG. 2, and
  • FIG. 5 is an elevation view along arrow F in FIG. 2.

En référence au dessin, on a représenté un projecteur de type elliptique qui comprend une lampe 10, un miroir 20 du genre ellipsoïdal et une lentille 40, ainsi qu'une glace de fermeture non représentée.Referring to the drawing, there is shown an elliptical type projector which comprises a lamp 10, a mirror 20 of the ellipsoidal type and a lens 40, as well as a closing glass not shown.

Le filament de la lampe 10 est placé au voisinage du premier foyer F1 du miroir 20. Le plan focal PF de la lentille 40, coaxiale avec le miroir 20, passe par le second foyer F2 du miroir.The filament of the lamp 10 is placed in the vicinity of the first focus F1 of the mirror 20. The focal plane PF of the lens 40, coaxial with the mirror 20, passes through the second focus F2 of the mirror.

Un dispositif à cache mobile, globalement indiqué en 30, est situé entre le miroir 20 et la lentille 30, de manière à définir sélectivement, dans le plan focal PF ou à son voisinage, un premier cache avec un premier profil de coupure et un second cache avec un second profil de coupure.A mobile cover device, generally indicated at 30, is located between the mirror 20 and the lens 30, so as to selectively define, in the focal plane PF or in its vicinity, a first cover with a first cutting profile and a second cover with a second cutting profile.

Ces deux caches sont définis par une pièce 31 montée rigidement sur un arbre 32 s'étendant horizontalement et perpendiculairement à l'axe optique xx du projecteur, à une certaine distance au-dessous dudit axe.These two covers are defined by a piece 31 rigidly mounted on a shaft 32 extending horizontally and perpendicular to the optical axis xx of the projector, at a certain distance below said axis.

Les deux extrémités de cet arbre, indiquées en 32a et 32b, tourillonnent dans deux paliers respectivement 33a et 33b formés par pliage dans les bords d'une pièce métallique 33 formant réhausse, prévue de façon conventionnelle à la transition entre le bord antérieur des joues 21 du miroir et le bord postérieur d'une autre réhausse 41 formant porte-lentille.The two ends of this shaft, indicated at 32a and 32b, rotate in two bearings respectively 33a and 33b formed by bending in the edges of a metal piece 33 forming an extension, provided in a conventional manner at the transition between the front edge of the cheeks 21 of the mirror and the rear edge of another extension 41 forming a lens holder.

La pièce 31, dans la position illustrée sur la figure 2, présente un profil supérieur défini par trois segments de droite 31a, 31b, 31c, disposés comme illustré, de manière à engendrer un faisceau lumineux de croisement pour circulation à droite, c'est-à-dire avec un relevèment de la coupure, défini par les segments 31a et 31b, dans la moitié droite du faisceau.The part 31, in the position illustrated in FIG. 2, has an upper profile defined by three straight segments 31a, 31b, 31c, arranged as illustrated, so as to generate a crossing light beam for right-hand traffic, that is that is to say with a raising of the cutoff, defined by the segments 31a and 31b, in the right half of the beam.

Le profil inférieur de la pièce 31 est également défini par trois segments de droite 31d, 31e, 31f, définissant, lorsque la pièce 31 est retournée à 180° autour de l'arbre 32, un profil de coupure d'un faisceau de croisement pour circulation à gauche.The lower profile of the part 31 is also defined by three straight lines 31d, 31e, 31f, defining, when the part 31 is turned 180 ° around the shaft 32, a cutting profile of a passing beam for left hand traffic.

L'extrémité 32b déborde latéralement au delà de son palier 33b, et sur la partie débordante est serti un bras de manoeuvre 34. Ce bras comprend à une première extrémité l'ouverture entourée d'un manchon 34b pour le sertissage, et à l'extrémité opposée une partie de préhension définie par deux pattes 34a repliées à 90° vers le côté. On observe que le bras 34 s'étend verticalement vers le bas dans la position de la pièce 31 illustrée sur la figure 2, correspondant à un sens de circulation à droite.The end 32b projects laterally beyond its bearing 33b, and on the projecting part is crimped an operating arm 34. This arm comprises at a first end the opening surrounded by a sleeve 34b for crimping, and at the opposite end a grip part defined by two legs 34a folded 90 ° to the side. It is observed that the arm 34 extends vertically downwards in the position of the part 31 illustrated in FIG. 2, corresponding to a direction of circulation on the right.

Le bras 34 est apte à coopérer avec des butées pour définir deux positions stables verticales, correspondant aux deux positions de la pièce 31 correspondant aux coupures à engendrer.The arm 34 is able to cooperate with stops to define two vertical stable positions, corresponding to the two positions of the part 31 corresponding to the cuts to be generated.

Plus précisément, il est prévu deux remières butées sous forme de pattes légèrement saillantes 22, 23, s'étendent vers le côté à partir du bord latéral d'une bride antérieure 24 faisant partie du miroir, et deux secondes butées sous forme de pattes 33c, 33d s'étendant également vers le côté, à la même hauteur que les pattes 22, 23, à partir du bord latéral de la pièce formant réhausse 33. Les intervalles entre les pattes 22, 33c d'une part et 23, 33d d'autre part, sont égales ou très légèrement plus larges que la largeur du bras.More specifically, two abutments are provided in the form of slightly protruding tabs 22, 23, extend to the side from the side edge of an anterior flange 24 forming part of the mirror, and two second stops in the form of legs 33c, 33d also extending to the side, at the same height as the legs 22, 23, from the lateral edge of the piece forming a riser 33. The intervals between the legs 22, 33c on the one hand and 23, 33d on the other hand, are equal or very slightly wider than the width of the arm.

Le matériau du bras est choisi de manière à lui conférer une certaine élasticité, de telle sorte qu'il puisse être, en agissant sur sa partie de préhension 34a, légèrement écarté vers l'extérieur à partir de la position illustrée sur les figures 3 et 4, pour être sélectivement emprisonné soit entre les deux butées 22, 33c (position haute) , soit entre les deux butées 23, 33d (position basse).The material of the arm is chosen so as to give it a certain elasticity, so that it can be, by acting on its grip part 34a, slightly apart towards the outside from the position illustrated in FIGS. 3 and 4, to be selectively trapped either between the two stops 22, 33c (high position), or between the two stops 23, 33d (low position).

Grâce au montage de l'arbre 32 tel que décrit, et à l'utilisation d'un bras comme indiqué ci-dessus, on obtient ainsi un cache à deux positions avec lequel les deux positions peuvent être obtenues avec une bonne stabilité et une bonne précision.Thanks to the mounting of the shaft 32 as described, and to the use of an arm as indicated above, a two-position cover is thus obtained with which the two positions can be obtained with good stability and good precision.

En outre, en adjoignant à la pièce 31 un bras 34 qui déplace le centre de gravité de l'ensemble pièce 31/bras 34 au-dessous de l'axe de pivotement horizontal défini par l'arbre 32 (pour la position représentée sur la figure 2), la pièce 31 ne peut pas occuper de position intermédiaire entre les deux positions définissant les deux faisceaux coupés. Plus précisément, dès que le bras 34 n'est plus prisonnier entre les deux butées supérieures 22, 33c, la pièce tend à basculer vers la position illustrée sur les figures 2, 4 et 5, c'est-à-dire celle qui correspond à un sens de circulation à droite (pour le cas où le véhicule est destiné principalement à droite).In addition, by adding to the part 31 an arm 34 which displaces the center of gravity of the part 31 / arm 34 assembly below the horizontal pivot axis defined by the shaft 32 (for the position represented on the Figure 2), the part 31 cannot occupy an intermediate position between the two positions defining the two cut beams. More precisely, as soon as the arm 34 is no longer trapped between the two upper stops 22, 33c, the part tends to tilt towards the position illustrated in FIGS. 2, 4 and 5, that is to say that which corresponds to a right-hand traffic direction (in the case where the vehicle is intended mainly for the right).

Bien entendu, dans le cas d'un véhicule destiné à normalement circuler à gauche, on adopte la solution inverse, à savoir que la position privilégiée de la pièce 31, obtenue sous l'action de la simple gravité, est celle de la circulation à gauche.Of course, in the case of a vehicle intended to travel normally on the left, we adopt the solution reverse, namely that the privileged position of the part 31, obtained under the action of simple gravity, is that of left-hand traffic.

A cet égard, afin d'assurer que le basculement de la pièce 31 sous l'action de la gravité lui permette effectivement d'atteindre la position privilégiée illustrée sur les figures 2, 4 et 5, il est avantageux de concevoir la butée 33d prévue sur la réhausse 33 de telle sorte que, par son inertie, le bras 34 puisse franchir cette butée. Une partie formant rampe peut être prévue à cet effet sur le bras 34 ou sur la butée 33d elle-même.In this regard, in order to ensure that the tilting of the part 31 under the action of gravity effectively allows it to reach the privileged position illustrated in FIGS. 2, 4 and 5, it is advantageous to design the stop 33d provided on the extension 33 so that, by its inertia, the arm 34 can pass this stop. A ramp portion may be provided for this purpose on the arm 34 or on the stop 33d itself.

En variante, le retour de la pièce 31 vers sa position privilégiée peut être assistée par un ressort.As a variant, the return of the part 31 to its privileged position can be assisted by a spring.

Bien entendu, la présente invention n'est nullement limitée aux formes de réalisation décrites et représentées, mais l'homme de l'art saura y apporter toute variante ou modification conforme à son esprit.Of course, the present invention is not limited to the embodiments described and shown, but those skilled in the art will be able to make any variant or modification in accordance with his spirit.

Claims (6)

Projecteur de véhicule automobile, comprenant une source lumineuse (10), un miroir du genre ellipsoïdal (20) dont un premier foyer (F1) est situé au voisinage de la source, une lentille convergente (40) dont un plan focal (PF) passe au voisinage d'un second foyer (F2) du miroir, et un dispositif à cache mobile (30) prévu entre le miroir et la lentille, le dispositif à cache mobile comprenant une lame (31) présentant deux bords opposés (31a-c, 31d-f) et susceptible de pivoter autour d'un axe généralement horizontal et transversal à un axe optique du projecteur, chacun des bords de ladite lame définissant respectivement un profil de coupure particulier pour le faisceau engendré, et un moyen (34) de manoeuvre et de verrouillage de ladite lame pour amener sélectivement l'un ou l'autre desdits bords sur le trajet du rayonnement et sélectivement former deux faisceaux à coupure différents, caractérisé en ce que la lame (31) est solidaire d'un arbre susceptible (32) de tourner dans des paliers (33a, 33b) formés dans une partie d'ossature (33) du projecteur solidaire du miroir, en ce que le moyen de manoeuvre et de verrouillage comprend un bras (34) solidaire de l'arbre et s'étendant de façon dissymétrique par rapport à l'axe de pivotement défini par ledit arbre, en ce que le dispositif à cache mobile comprend en outre des moyens de butée (22, 23, 33c, 33d) définissant deux positions stables dudit bras, toutes deux généralement verticales, et en ce que la dissymétrie du bras est telle qu'elle engendre par gravité une position stable privilégiée de la lame en cas de non-verrouillage dudit bras.Motor vehicle headlamp, comprising a light source (10), an ellipsoidal mirror (20) of which a first focal point (F1) is located in the vicinity of the source, a converging lens (40) of which a focal plane (PF) passes in the vicinity of a second focus (F2) of the mirror, and a movable cover device (30) provided between the mirror and the lens, the movable cover device comprising a blade (31) having two opposite edges (31a-c, 31d-f) and capable of pivoting about an axis generally horizontal and transverse to an optical axis of the projector, each of the edges of said blade respectively defining a particular cut-off profile for the beam generated, and an operating means (34) and locking said blade to selectively bring one or the other of said edges onto the radiation path and selectively form two beams with different cut-off, characterized in that the blade (31) is integral with a susceptible shaft (32 ) of tourn er in bearings (33a, 33b) formed in a frame part (33) of the projector secured to the mirror, in that the operating and locking means comprises an arm (34) secured to the shaft and extending asymmetrically relative to the pivot axis defined by said shaft, in that the movable cover device further comprises stop means (22, 23, 33c, 33d) defining two stable positions of said arm, both generally vertical, and in that the asymmetry of the arm is such that it generates by gravity a privileged stable position of the blade in the event of said arm not being locked. Projecteur selon la revendication 1, caractérisé en ce que les moyens de butée comprennent deux paires de pattes (22, 33c; 23, 33d) saillantes latéralement, et en ce que le bras est apte à être temporairement fléchi élastiquement vers l'extérieur du projecteur pour franchir l'une desdites pattes et se trouver emprisonné entre les deux pattes d'une même paire.Projector according to claim 1, characterized in that the stop means comprise two pairs of legs (22, 33c; 23, 33d) projecting laterally, and in that that the arm is able to be temporarily flexed elastically towards the outside of the headlight to cross one of said legs and be trapped between the two legs of the same pair. Projecteur selon la revendication 2, caractérisé en ce que les paires de pattes sont définies respectivement par le miroir (20) et par un élément (33) formant réhausse du projecteur, l'intervalle entre les butées d'une même paire étant égal ou légèrement supérieur à la largeur du bras (34).Projector according to claim 2, characterized in that the pairs of legs are defined respectively by the mirror (20) and by an element (33) forming a projection of the projector, the interval between the stops of the same pair being equal or slightly greater than the width of the arm (34). Projecteur selon l'une des revendications 1 à 3, caractérisé en ce que les paliers (33a, 33b) sont formés dans un élément formant réhausse (33) du projecteur, par pliage de la matière dudit élément.Projector according to one of claims 1 to 3, characterized in that the bearings (33a, 33b) are formed in an element forming an extension (33) of the projector, by folding the material of said element. Projecteur selon l'une des revendications 1 à 4, caractérisé en ce que les deux bords (31a-c, 31d-f) de la lame (31) sont configurés de manière à engendrer un faisceau de croisement pour circulation à droite et un faisceau de croisement pour circulation à gauche, respectivement, et en ce que la position du bras (34) orientée vers le bas, adoptée sous l'effet de la gravité, correspond à la génération du faisceau de croisement pour le côté de circulation pour lequel le véhicule est normalement prévu.Headlamp according to one of Claims 1 to 4, characterized in that the two edges (31a-c, 31d-f) of the blade (31) are configured so as to generate a passing beam for right-hand traffic and a beam for left-hand traffic, respectively, and in that the position of the arm (34) oriented downwards, adopted under the effect of gravity, corresponds to the generation of the passing beam for the side of traffic for which the vehicle is normally provided. Projecteur selon la revendication 5, caractérisé en ce qu'il comprend un moyen élastique apte à assister l'effet de la gravité.Projector according to claim 5, characterized in that it comprises an elastic means capable of assisting the effect of gravity.
EP95401528A 1994-06-28 1995-06-27 Headlamp comprising an ellipsoidal light reflector and a pivotable shade Expired - Lifetime EP0690261B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9407939A FR2721686B1 (en) 1994-06-28 1994-06-28 Projector of the elliptical type, comprising a tilting cover.
FR9407939 1994-06-28

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EP0690261A1 true EP0690261A1 (en) 1996-01-03
EP0690261B1 EP0690261B1 (en) 1999-11-17

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EP95401528A Expired - Lifetime EP0690261B1 (en) 1994-06-28 1995-06-27 Headlamp comprising an ellipsoidal light reflector and a pivotable shade

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EP (1) EP0690261B1 (en)
DE (1) DE69513333T2 (en)
FR (1) FR2721686B1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809802A1 (en) * 2000-05-31 2001-12-07 Valeo Vision Operating mechanism for mobile screen in motor vehicle headlamp, uses spring-loaded rod with stops to retain in set position and linear movement of rod to tilt screen
FR2836713A1 (en) * 2002-03-04 2003-09-05 Koito Mfg Co Ltd VEHICLE LIGHT WITH MOBILE SHUTTER
EP1422471A2 (en) * 2002-11-21 2004-05-26 Valeo Vision Elliptical vehicle headlamp emitting different light beams
US6746143B1 (en) 2003-03-27 2004-06-08 Guide Corporation Variable progressive beam headlamp
FR2897415A1 (en) * 2006-02-14 2007-08-17 Valeo Vision Sa LIGHTING PROJECTOR FOR MOTOR VEHICLES.
EP1512904A3 (en) * 2003-09-05 2007-12-19 Hella KGaA Hueck & Co. Vehicle headlamp
CZ302151B6 (en) * 2005-05-24 2010-11-18 Visteon Global Technologies, Inc. Headlight for vehicles
US7926993B2 (en) 2007-12-27 2011-04-19 Visteon Global Technologies, Inc. Projector unit
EP2384933A1 (en) * 2010-05-06 2011-11-09 Koito Manufacturing Co., Ltd. Vehicle headlamp system, control device and vehicle headlamp
CN102529796A (en) * 2011-10-15 2012-07-04 浙江吉利汽车研究院有限公司 Projection-type low-beam left-and-right-driving light-type switching mechanical structure for automobile
CN102767770A (en) * 2012-06-14 2012-11-07 吕根 Car light
CN111780049A (en) * 2020-06-28 2020-10-16 华域视觉科技(上海)有限公司 Vehicle reflecting mirror and dipped beam unit based on same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781870B1 (en) 1998-08-03 2000-10-13 Valeo Vision ELLIPTICAL PROJECTOR HAVING A TILTING COVER
DE19933414B4 (en) * 1999-07-16 2005-02-03 Automotive Lighting Reutlingen Gmbh Headlight for motor vehicles
FR2840386B1 (en) 2002-05-31 2005-01-07 Valeo Vision REFLECTOR PROJECTOR FOR MOTOR VEHICLE
FR2884296B1 (en) 2005-04-06 2008-02-08 Peugeot Citroen Automobiles Sa DEVICE FOR OCCULATING A BEAM EMITTED BY A VEHICLE ELLIPTICAL PROJECTOR AND ASSOCIATED PROJECTOR
FR2891046B1 (en) * 2005-09-20 2007-10-19 Valeo Vision Sa PROJECTOR FOR A MOTOR VEHICLE EQUIPPED WITH A MULTI-POSITION COVER.

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DE3415867A1 (en) * 1984-04-28 1985-10-31 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Dipped vehicle headlamp having a dish-shaped reflector
DE3425867A1 (en) 1984-07-13 1986-01-16 Hanger, Erwin Quick-acting coupling for attaching lighting fixtures to ceilings and walls
GB2273555A (en) 1992-12-19 1994-06-22 Bosch Gmbh Robert Headlight for vehicles

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DE3415867A1 (en) * 1984-04-28 1985-10-31 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Dipped vehicle headlamp having a dish-shaped reflector
DE3425867A1 (en) 1984-07-13 1986-01-16 Hanger, Erwin Quick-acting coupling for attaching lighting fixtures to ceilings and walls
GB2273555A (en) 1992-12-19 1994-06-22 Bosch Gmbh Robert Headlight for vehicles

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809802A1 (en) * 2000-05-31 2001-12-07 Valeo Vision Operating mechanism for mobile screen in motor vehicle headlamp, uses spring-loaded rod with stops to retain in set position and linear movement of rod to tilt screen
FR2836713A1 (en) * 2002-03-04 2003-09-05 Koito Mfg Co Ltd VEHICLE LIGHT WITH MOBILE SHUTTER
EP1422471A2 (en) * 2002-11-21 2004-05-26 Valeo Vision Elliptical vehicle headlamp emitting different light beams
FR2847655A1 (en) * 2002-11-21 2004-05-28 Valeo Vision ELLIPTICAL PROJECTOR FOR A MOTOR VEHICLE EMITTING DIFFERENT LIGHTING BEAMS
EP1422471A3 (en) * 2002-11-21 2007-12-05 Valeo Vision Elliptical vehicle headlamp emitting different light beams
US6746143B1 (en) 2003-03-27 2004-06-08 Guide Corporation Variable progressive beam headlamp
EP1512904A3 (en) * 2003-09-05 2007-12-19 Hella KGaA Hueck & Co. Vehicle headlamp
CZ302151B6 (en) * 2005-05-24 2010-11-18 Visteon Global Technologies, Inc. Headlight for vehicles
EP1818602A3 (en) * 2006-02-14 2009-06-03 Valeo Vision Motor vehicle headlight
US7568825B2 (en) 2006-02-14 2009-08-04 Valeo Vision Headlight for motor vehicles
FR2897415A1 (en) * 2006-02-14 2007-08-17 Valeo Vision Sa LIGHTING PROJECTOR FOR MOTOR VEHICLES.
US7926993B2 (en) 2007-12-27 2011-04-19 Visteon Global Technologies, Inc. Projector unit
CZ306609B6 (en) * 2007-12-27 2017-03-29 Varroc Lighting Systems, s.r.o. A projector unit
EP2384933A1 (en) * 2010-05-06 2011-11-09 Koito Manufacturing Co., Ltd. Vehicle headlamp system, control device and vehicle headlamp
CN102529796A (en) * 2011-10-15 2012-07-04 浙江吉利汽车研究院有限公司 Projection-type low-beam left-and-right-driving light-type switching mechanical structure for automobile
CN102529796B (en) * 2011-10-15 2014-10-15 浙江吉利汽车研究院有限公司 Projection-type low-beam left-and-right-driving light-type switching mechanical structure for automobile
CN102767770A (en) * 2012-06-14 2012-11-07 吕根 Car light
CN111780049A (en) * 2020-06-28 2020-10-16 华域视觉科技(上海)有限公司 Vehicle reflecting mirror and dipped beam unit based on same

Also Published As

Publication number Publication date
FR2721686B1 (en) 1996-09-13
FR2721686A1 (en) 1995-12-29
DE69513333T2 (en) 2000-04-13
EP0690261B1 (en) 1999-11-17
DE69513333D1 (en) 1999-12-23

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