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EP2966341B1 - Screen of a vehicle headlamp - Google Patents

Screen of a vehicle headlamp Download PDF

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Publication number
EP2966341B1
EP2966341B1 EP15173905.9A EP15173905A EP2966341B1 EP 2966341 B1 EP2966341 B1 EP 2966341B1 EP 15173905 A EP15173905 A EP 15173905A EP 2966341 B1 EP2966341 B1 EP 2966341B1
Authority
EP
European Patent Office
Prior art keywords
central portion
shield
light
module according
reflector
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.)
Active
Application number
EP15173905.9A
Other languages
German (de)
French (fr)
Other versions
EP2966341A1 (en
Inventor
Mehdi Madelaine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP2966341A1 publication Critical patent/EP2966341A1/en
Application granted granted Critical
Publication of EP2966341B1 publication Critical patent/EP2966341B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S41/55—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof

Definitions

  • the invention relates to the field of lighting and / or signaling, more particularly lighting and / or automotive signaling.
  • the invention particularly relates to a cache of an optical module and an optical module for a motor vehicle.
  • the published patent document EP 2 428 725 A2 discloses a car projector lighting module.
  • the lighting module in question comprises a light source, a first reflecting surface, and a lens disposed at the front of the second reflecting surface.
  • a main part serves as a support for the lens, the reflective surface and the cover.
  • This piece is then attached to a radiator.
  • the main piece ensures precise relative positioning between the lens, the reflective surface, the cover and the radiator.
  • a second reflective surface, said cover and intended to form a cut in lighting beam produced by the module, is formed directly in the main room.
  • the positioning of the cache is therefore dependent on the manufacturing tolerances of the main part which can in certain circumstances be penalizing.
  • the subject of the invention is a module comprising a cache of an optical module, in particular for a motor vehicle, intended to intercept a portion of the returned light rays emitted by a light source, comprising a central portion extending in a first direction, in particular horizontal, and at least one branch (52).
  • the branch or branches extend from a longitudinal end of the central portion in a second direction at an angle, in particular 90 °, with the first direction.
  • longitudinal means for the direction of the length of the central part, that is to say along the first direction.
  • the cache comprises at least one attachment means.
  • the or each fastening means is a latching means.
  • the or each snap means may be a clip.
  • the or each fastening means is located on the or each branch of the cache. This feature has the advantage of being able to move the fastening means or means away from the central part of the cover and to reserve other functions for this central part.
  • the or each branch comprises a U-shaped opening, the clip being formed by the part of this complementary branch of the U. If desired, the complementary part of the U can be folded.
  • only the central part of the cover is arranged to intercept at least a portion of the light rays.
  • the central portion of the cover has an upper surface arranged to intercept said portion of the light rays.
  • the branch is devoid of optical function and in particular of interception function of said light rays.
  • the central portion is thus intended to form a cut in the light beam produced by the module.
  • the central portion may comprise a front edge whose profile comprises a projection (512), in particular oblique or vertical.
  • the central part makes it possible to perform a code-like break in the light beam, to avoid dazzling other road users.
  • the central portion has a hexagonal shape, the or each side of the hexagon bordering the side forming the front edge joins the edge of the hexagon forming the longitudinal end of the central portion from which extend the or each branch. The shape of the central part is thus particularly simple to produce.
  • the central portion comprises a wall extending from the front edge below the central portion.
  • other light rays emitted by the light source can propagate in the module passing under the cover. Such rays then have an unwanted trajectory and are likely to dazzle other road users. This characteristic offers the advantage of being able to intercept these rays and thus to guarantee the comfort and safety of these other users.
  • the projection extends transversely to the first direction over the entire width of the central portion.
  • the central portion has a rear edge whose profile is identical to the front edge.
  • the central portion may be shaped so that the projection extends only over a portion of the width of the central portion. In this case, the trailing edge may be missing.
  • the central portion has a reflective upper surface. It is thus possible to obtain a folding-type effect by which the intercepted rays are "folded" by the cover towards the road, so as to increase the luminous intensity of the light beam produced by the module while avoiding dazzling d other road users.
  • the central portion has at least one polarizing means, preferably located at one of its longitudinal ends.
  • This polarizing means in particular makes it possible to determine the mounting direction of the cache in the module and thus to avoid mounting this cache in the module erroneously.
  • the central portion has at least two polarizing means, each located at one or other of its longitudinal ends.
  • each polarizing means may be formed by a hole in the central portion, each hole having in particular a different shape.
  • One of these holes may have a circular shape, the other of these holes having an oblong shape.
  • the holes may be through.
  • the holes may be non-through.
  • the central portion has a single polarizing means in the form of a magnet.
  • the central portion comprises at least one cache positioning means in the module, preferably located at one end of the central portion.
  • This positioning means makes it possible to ensure that the cover is mounted in the module in a desired and predetermined position. In this way, only a desired and predetermined portion of the rays is intercepted, for example to ensure the position of the cut in the light beam produced by the module.
  • the or each positioning means may be a cache positioning groove, preferably extending transversely to the first direction, especially over the entire width of the central portion.
  • the cover has at least two branches each extending from one or other of the longitudinal ends of the central portion above the central portion in a second direction forming an angle, in particular 90 °, with the first direction.
  • the two branches may extend over different lengths and / or have different widths.
  • This feature offers the advantage of adding another polarizing means to ensure that the cache will be mounted in the desired position.
  • the horizontal cover is a folded sheet metal.
  • the cover comprises a steel core.
  • the cover may comprise a polymer core, for example polycarbonate or polymethylmethacrylate (PMMA).
  • the steel core is coated with a layer of silver. In this case, the silver layer makes it possible to achieve the "folding" effect.
  • the subject of the invention is also an optical module, in particular for lighting and / or signaling, comprising a light source capable of emitting light rays, an optical projection element intended to project light rays coming from the light source in the form of a light source. a light beam in a main direction of emission and a cache, remarkable in that the cache is according to the invention, the cache being disposed between the light source and the optical element.
  • the projection optical element has a focus, this focus being preferably arranged at the front edge of the cover.
  • the projection optical element is a lens.
  • the projection optical element is a reflector.
  • the projection optical element is a combination of one or more lenses and one or more reflectors.
  • the main direction of emission is perpendicular to the first direction in which extends the main part of the cache.
  • the cache is intended to form a cutoff, in particular of code type, in the light beam projected by the optical element.
  • the module further comprises a reflector having a first focus and a second focus, the light source being disposed at the first focus and the reflector being arranged so that light rays emitted from the light source are reflected by the reflector at the second focus.
  • the reflector may be a reflector of generally elliptical shape.
  • the module further comprises a part of which a stylistic part is arranged in front of the lens, in the main direction of emission, the reflector and the piece are made of material and forming a mask.
  • a part of style is understood to mean a part whose sole function is an aesthetic function, that is to say devoid of any role in the formation of the light beam.
  • the mask comprises at least one securing means adapted to cooperate with the cache fixing means. If necessary, the mask may comprise two securing means.
  • the two securing means are arranged on either side of the reflector.
  • the two securing means are located along an axis perpendicular to the optical axis.
  • the two securing means may be of different shape and / or of different size.
  • the or each securing means may be a slot, in particular of rectangular shape.
  • the or each slot can be oriented in the longitudinal direction of the module element
  • the mask comprises at least two protuberances, each of these protuberances being adapted to cooperate with one of the holes of the cache.
  • each protuberance can be located between two ribs
  • the ribs may extend in the longitudinal direction of the element.
  • the two protuberances are located between the reflector and the securing means.
  • the element comprises two sides, the first side having a concave surface, this concave surface being the reflective surface of the reflector and the or each protuberance is located on the same side of the element as the concave surface.
  • the two protuberances can be located on either side of the reflector.
  • the two protuberances are of different shapes and / or different sizes.
  • the two protuberances are pawns.
  • the element is made of plastic material. If necessary, the element can be molded.
  • the light source is a semiconductor emitter chip, for example an electroluminescent diode (LED).
  • LED electroluminescent diode
  • the cover (50) is intended to form a cut-off lighting beam in accordance with the vehicle lighting regulations in force in most countries.
  • the cover (50) has a central portion (51) and at least one leg (52).
  • the cover has two branches (52).
  • the central portion (51) extends in a first direction, here horizontally.
  • the two branches (52) extend in a second direction from a longitudinal end of the central portion (51) of the cover.
  • the term longitudinal means for the direction of the length of the central part, that is to say along the first direction.
  • the first direction and the second direction form an angle. According to the preferred embodiment this angle is close to 90 ° or even equal to 90 °.
  • the cover has a U-shaped longitudinal profile.
  • each leg (52) extends from one or other of the longitudinal ends (514) of the central portion (51) above the central portion in a second direction forming an angle, in particular 90 ° , with the first direction.
  • the two branches (52) extend over different lengths and / or have different widths.
  • the branches (52) comprise at least one fixing means (520) of the cover.
  • the fastening means (520) may be resilient or rigid, removable or permanent, complete or partial.
  • the fastening means is a detent means (520).
  • the latching means (520) takes the form of a clip (520).
  • each leg (52) comprises a fixing means (520).
  • the fixing means is permanent, and may be a rivet, glue, or a tree.
  • the two branches (52) illustrated on the figure 1 each have a U-shaped opening (521). This opening can be performed by cutting.
  • the clip is then formed by the complementary part (522) of the U.
  • Preferably the complementary part (522) of the U is folded.
  • each branch (520) is devoid of optical function and in particular of interception function of light rays.
  • the central portion (51) has a front edge whose longitudinal profile comprises a projection (512), in particular oblique or vertical, to form a cut-off lighting beam, in accordance with the lighting regulation of the vehicles in force in most countries.
  • the central portion (51) has a hexagonal shape, the or each side of the hexagon bordering the side forming the front edge joins the edge of the hexagon forming the longitudinal end (514) the central portion from which extends the or each branch (52).
  • the central portion (51) may comprise a wall extending from the front edge below the central portion (51).
  • the projection (512) extends transversely to the first direction over the entire width of the central portion.
  • the central portion (51) has a rear edge whose profile is identical to the front edge. It should be noted that the central portion may be shaped so that the projection (512) extends only over part of the width of the central portion. In this case, the trailing edge may be missing.
  • the central portion (51) has at least one polarizing means (513, 515), preferably located at one of its longitudinal ends (514).
  • the central portion (51) has at least two polarizing means (513, 515), each located at one or other of its longitudinal ends (514).
  • Each polarizing means (513, 515) is formed by a hole in the central portion (51), each hole (513, 515) having in particular a different shape.
  • one of these holes may have a circular shape (513), the other of these holes having an oblong shape (515).
  • the holes (513, 515) are through.
  • the holes may be non-through.
  • the central portion (51) has a single polarizing means in the form of a magnet.
  • the central portion (51) comprises at least one positioning means (511) of the cover (50) in the module.
  • the or each positioning means (511) is located at one end of the central portion (514).
  • the or each positioning means (511) is a positioning groove (511) of the cover.
  • the groove (511) extends transversely to the first direction, especially over the entire width of the central portion (51).
  • the cover (50) is a folded sheet metal.
  • the cover (50) comprises a steel core.
  • the cover (50) may comprise a polymer core, for example polycarbonate or polymethylmethacrylate (PMMA).
  • the steel core is coated with a layer of silver.
  • the figure 2 is an exploded representation of an optical module (1) according to the invention.
  • This optical module (1) can be mounted in a motor vehicle headlight.
  • this module (1) produces a cut-off lighting beam such as for a lighting function of the "code" type or low beam.
  • the module (1) comprises a light source (40) capable of emitting one of the light rays, a lower mask (23) an optical projection element (30, 231) and a cover (50) according to the invention.
  • the optical element (30, 231) is able to project light rays from the light source in the form of a light beam in a main direction of emission.
  • the projection optical element has a focus, this focus being disposed preferably at the front edge of the cover.
  • the projection optical element is a lens (30).
  • the lens is a convergent lens (30).
  • the projection optical element is a reflector (231).
  • the projection optical element is a combination of one or more lenses and one or more reflectors.
  • the main direction of emission is perpendicular to the first direction in which extends the main part of the cache and the second direction in which the branches extend.
  • the lens (30) is made of polycarbonate (PC) or polymethylmethacrylate (PMMA).
  • the lens (30) is molded.
  • the cover (50) is intended to form a cutoff, in particular of the code type, in the light beam projected by the optical element (30, 231).
  • the cover (50) is disposed between the light source and the optical element (30).
  • the optical module (1) object of the invention further comprises a reflector (231) having a first focus and a second focus.
  • the light source (40) is disposed at the first focus and the reflector (231) is arranged so that the light rays emitted by the light source (40) are reflected by the reflector at the second focus.
  • the reflector (231) is a reflector of generally elliptical shape.
  • the module (1) comprises a piece of style (235), part of which is arranged in front of the lens (30), in the main direction of emission, the reflector (231) and the piece of style have come from matter and form a lower mask (23).
  • the lower mask (23) comprises at least one securing means (234) adapted to cooperate with the fastening means (520) of the cover (50).
  • the lower mask has two securing means (234).
  • the two securing means (234) are on either side of the reflector (231).
  • the two securing means (234) are located along an axis perpendicular to the optical axis.
  • each securing means (234) are of different shape and / or of different size.
  • each securing means (234) is a slot.
  • the or each slot (234) is of rectangular shape. There where each slot (234) can be oriented in the longitudinal direction of the lower mask (23).
  • the lower mask (23) comprises at least two protuberances, each of these protuberances being adapted to cooperate with one of the holes of the cover (513, 515).
  • each protuberance is located between two ribs.
  • the ribs may extend in the longitudinal direction of the mask.
  • each rib extends from the protrusion and extends radially away from it, and the protuberance may be cylindrical or frustoconical, the ribs being diametrically opposed to this protuberance.
  • the two protuberances are located between the reflector (231) and the securing means.
  • the lower mask (23) comprises two sides: the first side has a concave surface, this concave surface being the reflective surface of the reflector (231) and the or each protuberance is located on the same side of the mask (23). ) than the concave surface.
  • the two protuberances are located on either side of the reflector (231).
  • the two protuberances are of different shapes and / or different sizes.
  • the two protuberances are pions.
  • the pins are of cylindrical shape.
  • the lower mask (23) is made of plastic. Preferably the lower mask (23) is molded.
  • the light source is a semiconductor emitter chip, for example a light emitting diode (LED).
  • LED light emitting diode

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

L'invention a trait au domaine de l'éclairage et/ou de la signalisation, plus particulièrement de l'éclairage et/ou de la signalisation automobile. L'invention a notamment trait à un cache d'un module optique et à un module optique pour véhicule automobile.
Le document de brevet publié EP 2 428 725 A2 divulgue un module d'éclairage de projecteur automobile. Le module d'éclairage en question comprend une source lumineuse, une première surface réfléchissante, et une lentille disposée à l'avant de la deuxième surface réfléchissante. Dans ce module, une pièce principale sert de support à la lentille, à la surface réfléchissante et au cache. Cette pièce est alors fixée à un radiateur. Dans cette demande, la pièce principale permet d'assurer un positionnement relatif précis entre la lentille, la surface réfléchissante, le cache et le radiateur. En outre, une deuxième surface réfléchissante, dit cache et destinée à former une coupure dans faisceau d'éclairage réalisé par le module, est formée directement dans la pièce principale. Le positionnement du cache est donc tributaire des tolérances de fabrication de la pièce principale qui peuvent dans certaines circonstances être pénalisantes. La pièce principale est par ailleurs une pièce complexe dont la réalisation est coûteuse.
L'invention vise notamment à pallier les problèmes précités.The invention relates to the field of lighting and / or signaling, more particularly lighting and / or automotive signaling. The invention particularly relates to a cache of an optical module and an optical module for a motor vehicle.
The published patent document EP 2 428 725 A2 discloses a car projector lighting module. The lighting module in question comprises a light source, a first reflecting surface, and a lens disposed at the front of the second reflecting surface. In this module, a main part serves as a support for the lens, the reflective surface and the cover. This piece is then attached to a radiator. In this application, the main piece ensures precise relative positioning between the lens, the reflective surface, the cover and the radiator. In addition, a second reflective surface, said cover and intended to form a cut in lighting beam produced by the module, is formed directly in the main room. The positioning of the cache is therefore dependent on the manufacturing tolerances of the main part which can in certain circumstances be penalizing. The main piece is also a complex piece whose realization is expensive.
The invention aims in particular to overcome the aforementioned problems.

L'invention à pour objet un module comprenant un cache d'un module optique, notamment pour véhicule automobile, destiné à intercepter une partie des rayons lumineux renvoyés émis par une source lumineuse, comprenant une partie centrale s'étendant selon une première direction, notamment horizontale, et au moins une branche (52). Selon l'invention, la ou les branches s'étendent depuis une extrémité longitudinale de la partie centrale dans une seconde direction faisant un angle, notamment de 90°, avec la première direction. Le terme longitudinal s'entend pour dans le sens de la longueur de la partie centrale, c'est-à-dire le long de la première direction.
Ainsi, l'invention permet de réaliser facilement une pièce pour un module optique destinée à former une coupure dans le faisceau lumineux réalisé par le module. La forme de la pièce est en effet réalisable via un procédé mettant en oeuvre peu d'opérations. Par conséquent, le coût de production est fortement réduit et les tolérances de fabrication impactent peu le positionnement du cache dans le module,The subject of the invention is a module comprising a cache of an optical module, in particular for a motor vehicle, intended to intercept a portion of the returned light rays emitted by a light source, comprising a central portion extending in a first direction, in particular horizontal, and at least one branch (52). According to the invention, the branch or branches extend from a longitudinal end of the central portion in a second direction at an angle, in particular 90 °, with the first direction. The term longitudinal means for the direction of the length of the central part, that is to say along the first direction.
Thus, the invention makes it easy to produce a part for an optical module intended to form a cut in the light beam produced by the module. The shape of the piece is indeed achievable via a process using little operations. As a result, the cost of production is greatly reduced and manufacturing tolerances have little impact on the positioning of the cache in the module.

Selon l'invention, le cache comprend au moins un moyen de fixation.
Avantageusement, le ou chaque moyen de fixation est un moyen d'encliquetage. Par exemple, le ou chaque moyen d'encliquetage peut être un clip. Selon l'invention, le ou chaque moyen de fixation est situé sur la ou chaque branche du cache. Cette caractéristique offre l'avantage de pouvoir éloigner le ou les moyens de fixations de la partie centrale du cache et de réserver d'autres fonctions à cette partie centrale.
Le cas échéant, la ou chaque branche comporte une ouverture en U, le clip étant formé par la partie de cette branche complémentaire du U.
Si on le souhaite, la partie complémentaire du U peut être pliée.
Selon un mode avantageux de l'invention, seule la partie centrale du cache est agencée pour intercepter au moins une partie des rayons lumineux. La partie centrale du cache présente une surface supérieure agencée pour intercepter ladite partie des rayons lumineux. La branche est dépourvue de fonction optique et en particulier de fonction d'interception desdits rayons lumineux. Selon l'invention, la partie centrale est ainsi destinée à former une coupure dans le faisceau lumineux réalisé par le module.
Par exemple, la partie centrale peut comporter un bord avant dont le profil comprend un ressaut (512), notamment oblique ou vertical. Dans ce cas, la partie centrale permet de réaliser une coupure de type code dans le faisceau lumineux, pour éviter d'éblouir d'autres usagers de la route.
Si on le souhaite, la partie centrale présente une forme hexagonale, le ou chaque côté de l'hexagone bordant le côté formant le bord avant joint le bord de l'hexagone formant l'extrémité longitudinale de la partie centrale à partir de laquelle s'étend la ou chaque branche. La forme de la partie centrale est ainsi particulièrement simple à produire.According to the invention, the cache comprises at least one attachment means.
Advantageously, the or each fastening means is a latching means. For example, the or each snap means may be a clip. According to the invention, the or each fastening means is located on the or each branch of the cache. This feature has the advantage of being able to move the fastening means or means away from the central part of the cover and to reserve other functions for this central part.
Where appropriate, the or each branch comprises a U-shaped opening, the clip being formed by the part of this complementary branch of the U.
If desired, the complementary part of the U can be folded.
According to an advantageous embodiment of the invention, only the central part of the cover is arranged to intercept at least a portion of the light rays. The central portion of the cover has an upper surface arranged to intercept said portion of the light rays. The branch is devoid of optical function and in particular of interception function of said light rays. According to the invention, the central portion is thus intended to form a cut in the light beam produced by the module.
For example, the central portion may comprise a front edge whose profile comprises a projection (512), in particular oblique or vertical. In this case, the central part makes it possible to perform a code-like break in the light beam, to avoid dazzling other road users.
If desired, the central portion has a hexagonal shape, the or each side of the hexagon bordering the side forming the front edge joins the edge of the hexagon forming the longitudinal end of the central portion from which extend the or each branch. The shape of the central part is thus particularly simple to produce.

Avantageusement, la partie centrale comporte un muret s'étendant depuis le bord avant en dessous de la partie centrale. En effet, d'autres rayons lumineux émis par la source lumineuse peuvent se propager dans le module en passant sous le cache. De tels rayons présentent alors une trajectoire non désirée et sont susceptibles d'éblouir d'autres usagers de la route. Cette caractéristique offre l'avantage de pouvoir intercepter ces rayons et donc de garantir le confort et la sécurité de ces autres usagers.Advantageously, the central portion comprises a wall extending from the front edge below the central portion. Indeed, other light rays emitted by the light source can propagate in the module passing under the cover. Such rays then have an unwanted trajectory and are likely to dazzle other road users. This characteristic offers the advantage of being able to intercept these rays and thus to guarantee the comfort and safety of these other users.

De préférence, le ressaut s'étend transversalement à la première direction sur toute la largeur de la partie centrale. Dans ce cas, la partie centrale comporte un bord arrière dont le profil est identique au bord avant. En variante, la partie centrale peut être conformée de sorte à ce que le ressaut s'étend uniquement sur une partie de la largeur de la partie centrale. Dans ce cas, le bord arrière peut être dépourvu de ressaut.Preferably, the projection extends transversely to the first direction over the entire width of the central portion. In this case, the central portion has a rear edge whose profile is identical to the front edge. Alternatively, the central portion may be shaped so that the projection extends only over a portion of the width of the central portion. In this case, the trailing edge may be missing.

Avantageusement, la partie centrale présente une surface supérieure réfléchissante. Il est ainsi possible d'obtenir un effet de type plieuse par lequel les rayons interceptés sont « repliés » par le cache vers la route, de façon à augmenter l'intensité lumineuse du faisceau lumineux réalisé par le module toute en évitant d'éblouir d'autres usagers de la route.Advantageously, the central portion has a reflective upper surface. It is thus possible to obtain a folding-type effect by which the intercepted rays are "folded" by the cover towards the road, so as to increase the luminous intensity of the light beam produced by the module while avoiding dazzling d other road users.

Selon un mode avantageux de l'invention, la partie centrale présente au moins un moyen détrompeur, situé de préférence à l'une de ses extrémités longitudinales. Ce moyen détrompeur permet en particulier de déterminer le sens de montage du cache dans le module et ainsi d'éviter de monter ce cache dans le module de façon erronée.According to an advantageous embodiment of the invention, the central portion has at least one polarizing means, preferably located at one of its longitudinal ends. This polarizing means in particular makes it possible to determine the mounting direction of the cache in the module and thus to avoid mounting this cache in the module erroneously.

Avantageusement encore, la partie centrale présente au moins deux moyens détrompeurs, chacun situé à l'une ou l'autre de ses extrémités longitudinales.Advantageously, the central portion has at least two polarizing means, each located at one or other of its longitudinal ends.

Par exemple, chaque moyen détrompeur peut être formé par un trou de la partie centrale, chaque trou présentant notamment une forme différente. L'un de ces trous peut présenter une forme circulaire, l'autre de ces trous présentant une forme oblongue.For example, each polarizing means may be formed by a hole in the central portion, each hole having in particular a different shape. One of these holes may have a circular shape, the other of these holes having an oblong shape.

Eventuellement, les trous peuvent être traversants. En variante, les trous peuvent être non traversants.
Dans un autre mode de réalisation de l'invention, la partie centrale présente un unique moyen détrompeur sous la forme d'un aimant.Optionally, the holes may be through. Alternatively, the holes may be non-through.
In another embodiment of the invention, the central portion has a single polarizing means in the form of a magnet.

Selon l'invention, la partie centrale comprend au moins un moyen de positionnement du cache dans le module, de préférence située à une extrémité de la partie centrale. Ce moyen de positionnement permet de s'assurer que le cache soit monté dans le module dans une position souhaitée et prédéterminée. De cette façon, seule une partie souhaitée et prédéterminée des rayons est interceptée, par exemple pour garantir la position de la coupure dans le faisceau lumineux réalisé par le module.
Par exemple, le ou chaque moyen de positionnement peut être une rainure de positionnement du cache, de préférence s'étendant transversalement à la première direction, notamment sur toute la largeur de la partie centrale.
Selon un mode avantageux de l'invention, le cache comporte au moins deux branches s'étendant chacune depuis l'une ou l'autre des extrémités longitudinales de la partie centrale au dessus de la partie centrale dans une seconde direction faisant un angle, notamment de 90°, avec la première direction.
Dans ce cas, les deux branches peuvent s'étendre sur des longueurs différentes et/ou présentent des largeurs différentes. Cette caractéristique offre l'avantage d'ajouter un autre moyen détrompeur permettant de s'assurer que le cache sera monté dans la position souhaitée.
Selon un mode avantageux de l'invention, le cache horizontal est une tôle emboutie pliée. Le procédé de fabrication du cache est dans ce cas particulièrement simple et peu couteux.
De préférence, le cache comporte une âme en acier. En variante, le cache peut comporter une âme en polymère, par exemple en polycarbonate ou en polymétacrylate de méthyle (PMMA).
Avantageusement, l'âme en acier est revêtue d'une couche d'argent. Dans ce cas, la couche d'argent permet de réaliser l'effet « plieuse ».According to the invention, the central portion comprises at least one cache positioning means in the module, preferably located at one end of the central portion. This positioning means makes it possible to ensure that the cover is mounted in the module in a desired and predetermined position. In this way, only a desired and predetermined portion of the rays is intercepted, for example to ensure the position of the cut in the light beam produced by the module.
For example, the or each positioning means may be a cache positioning groove, preferably extending transversely to the first direction, especially over the entire width of the central portion.
According to an advantageous embodiment of the invention, the cover has at least two branches each extending from one or other of the longitudinal ends of the central portion above the central portion in a second direction forming an angle, in particular 90 °, with the first direction.
In this case, the two branches may extend over different lengths and / or have different widths. This feature offers the advantage of adding another polarizing means to ensure that the cache will be mounted in the desired position.
According to an advantageous embodiment of the invention, the horizontal cover is a folded sheet metal. The process of manufacturing the cache is in this case particularly simple and inexpensive.
Preferably, the cover comprises a steel core. Alternatively, the cover may comprise a polymer core, for example polycarbonate or polymethylmethacrylate (PMMA).
Advantageously, the steel core is coated with a layer of silver. In this case, the silver layer makes it possible to achieve the "folding" effect.

L'invention a également pour objet un module optique, notamment d'éclairage et/ou de signalisation, comprenant une source lumineuse apte à émettre des rayons lumineux, un élément optique de projection destiné à projeter des rayons lumineux issus de la source lumineuse sous forme d'un faisceau lumineux selon une direction principale d'émission et un cache, remarquable en ce que le cache est conforme à l'invention, le cache étant disposé entre la source lumineuse et l'élément optique.
De préférence, l'élément optique de projection présente un foyer, ce foyer étant disposé de préférence au niveau du bord avant du cache. L'élément optique de projection est une lentille. En variante, l'élément optique de projection est un réflecteur. En variante encore, l'élément optique de projection est une combinaison d'une ou plusieurs lentilles et d'un ou plusieurs réflecteurs. La direction principale d'émission est perpendiculaire à la première direction selon laquelle s'étend la partie principale du cache. Selon l'invention, le cache est destiné à former une coupure, notamment de type code, dans le faisceau lumineux projeté par l'élément optique. Selon l'invention, le module comprend en outre un réflecteur présentant un premier foyer et un second foyer, la source lumineuse étant disposée au premier foyer et le réflecteur étant agencé de sorte à ce que des rayons lumineux émis par la source lumineuse soient réfléchis par le réflecteur au deuxième foyer. Le réflecteur peut être un réflecteur de forme généralement elliptique. Selon l'invention, le module comporte en outre une pièce dont une partie de style est disposée en avant de la lentille, selon la direction principale d'émission, le réflecteur et la pièce sont venus de matière et formant un masque. On entend par partie de style une partie dont l'unique fonction est une fonction esthétique, c'est-à-dire dépourvu de rôle dans la formation du faisceau lumineux. Selon l'invention, le masque comporte au moins un moyen de solidarisation apte à coopérer avec le moyen de fixation du cache. Le cas échéant, le masque peut comporter deux moyens de solidarisation.The subject of the invention is also an optical module, in particular for lighting and / or signaling, comprising a light source capable of emitting light rays, an optical projection element intended to project light rays coming from the light source in the form of a light source. a light beam in a main direction of emission and a cache, remarkable in that the cache is according to the invention, the cache being disposed between the light source and the optical element.
Preferably, the projection optical element has a focus, this focus being preferably arranged at the front edge of the cover. The projection optical element is a lens. In a variant, the projection optical element is a reflector. In another variant, the projection optical element is a combination of one or more lenses and one or more reflectors. The main direction of emission is perpendicular to the first direction in which extends the main part of the cache. According to the invention, the cache is intended to form a cutoff, in particular of code type, in the light beam projected by the optical element. According to the invention, the module further comprises a reflector having a first focus and a second focus, the light source being disposed at the first focus and the reflector being arranged so that light rays emitted from the light source are reflected by the reflector at the second focus. The reflector may be a reflector of generally elliptical shape. According to the invention, the module further comprises a part of which a stylistic part is arranged in front of the lens, in the main direction of emission, the reflector and the piece are made of material and forming a mask. A part of style is understood to mean a part whose sole function is an aesthetic function, that is to say devoid of any role in the formation of the light beam. According to the invention, the mask comprises at least one securing means adapted to cooperate with the cache fixing means. If necessary, the mask may comprise two securing means.

Si on le souhaite, les deux moyens de solidarisation sont disposés de part et d'autre du réflecteur. Par exemple, les deux moyens de solidarisation sont situés selon un axe perpendiculaire à l'axe optique.If desired, the two securing means are arranged on either side of the reflector. For example, the two securing means are located along an axis perpendicular to the optical axis.

Dans un mode de réalisation de l'invention, les deux moyens de solidarisation peuvent être de forme différente et/ou de taille différente.In one embodiment of the invention, the two securing means may be of different shape and / or of different size.

Par exemple, le ou chaque moyen de solidarisation peut être une fente, notamment de forme rectangulaire.For example, the or each securing means may be a slot, in particular of rectangular shape.

Dans ce cas, la ou chaque fente peut être orientée dans le sens longitudinal de l'élément de moduleIn this case, the or each slot can be oriented in the longitudinal direction of the module element

Selon un mode de réalisation de l'invention, le masque comprend au moins deux protubérances, chacune de ces protubérances étant apte à coopérer avec l'un des trous du cache.According to one embodiment of the invention, the mask comprises at least two protuberances, each of these protuberances being adapted to cooperate with one of the holes of the cache.

Si on le souhaite, chaque protubérance peut être située entre deux nervuresIf desired, each protuberance can be located between two ribs

Le cas échéant, les nervures peuvent s'étendre dans le sens longitudinal de l'élément.Where appropriate, the ribs may extend in the longitudinal direction of the element.

Avantageusement, les deux protubérances sont situées entre le réflecteur et le moyen de solidarisation.Advantageously, the two protuberances are located between the reflector and the securing means.

Par exemple, l'élément comprend deux côtés, le premier côté présentant une surface concave, cette surface concave étant la surface réfléchissante du réflecteur et la ou chaque protubérance est située sur le même côté de l'élément que la surface concave.For example, the element comprises two sides, the first side having a concave surface, this concave surface being the reflective surface of the reflector and the or each protuberance is located on the same side of the element as the concave surface.

Dans ce cas, les deux protubérances peuvent être situées de part et d'autre du réflecteur.In this case, the two protuberances can be located on either side of the reflector.

Le cas échéant, les deux protubérances sont de formes différentes et/ou de tailles différentes.Where appropriate, the two protuberances are of different shapes and / or different sizes.

Par exemple, les deux protubérances sont des pions.For example, the two protuberances are pawns.

Selon un mode de réalisation, l'élément est en matière plastique. Le échéant, l'élément peut être moulé.According to one embodiment, the element is made of plastic material. If necessary, the element can be molded.

Alternativement ou de manière avantageuse, la source lumineuse est une puce émettrice semi-conductrice, par exemple une diode électroluminescente (LED).Alternatively or advantageously, the light source is a semiconductor emitter chip, for example an electroluminescent diode (LED).

D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels :

  • La figure 1 est une vue avant en perspective d'un cache d'un module d'éclairage de projecteur automobile, conforme à l'invention ;
  • La figure 2 est une vue en éclatée du module, conforme à l'invention.
Other features and advantages of the present invention will be better understood from the description and the drawings, among which:
  • The figure 1 is a front perspective view of a cache of a car projector lighting module according to the invention;
  • The figure 2 is an exploded view of the module according to the invention.

Dans le mode de réalisation présenté sur la figure 1, le cache (50) est destiné à former un faisceau d'éclairage à coupure, conformément à la réglementation en matière d'éclairage des véhicules en vigueur dans la plupart des pays.In the embodiment presented on the figure 1 , the cover (50) is intended to form a cut-off lighting beam in accordance with the vehicle lighting regulations in force in most countries.

Le cache (50) présente une partie centrale (51) et au moins une branche (52). De préférence la cache présente deux branches (52). La partie centrale (51) s'étend dans une première direction, ici horizontalement. Les deux branches (52) s'étendent dans une deuxième direction depuis une extrémité longitudinale de la partie centrale (51) du cache. Le terme longitudinal s'entend pour dans le sens de la longueur de la partie centrale, c'est-à-dire le long de la première direction. La première direction et la seconde direction forment un angle. Selon le mode de réalisation préféré cet angle est proche de 90° voire égal à 90°. Ainsi dans le mode de réalisation représenté sur la figure 1, le cache présente un profil longitudinal en forme de U.The cover (50) has a central portion (51) and at least one leg (52). Preferably the cover has two branches (52). The central portion (51) extends in a first direction, here horizontally. The two branches (52) extend in a second direction from a longitudinal end of the central portion (51) of the cover. The term longitudinal means for the direction of the length of the central part, that is to say along the first direction. The first direction and the second direction form an angle. According to the preferred embodiment this angle is close to 90 ° or even equal to 90 °. Thus in the embodiment shown on the figure 1 , the cover has a U-shaped longitudinal profile.

On peut observer à la figure 1 que la ou chaque branche (52) s'étend depuis l'une ou l'autre des extrémités longitudinales (514) de la partie centrale (51) au dessus de la partie centrale dans une seconde direction faisant un angle, notamment de 90°, avec la première direction. De préférence, les deux branches (52) s'étendent sur des longueurs différentes et/ou présentent des largeurs différentes.We can observe at figure 1 the or each leg (52) extends from one or other of the longitudinal ends (514) of the central portion (51) above the central portion in a second direction forming an angle, in particular 90 ° , with the first direction. Preferably, the two branches (52) extend over different lengths and / or have different widths.

Les branches (52) comprennent au moins un moyen de fixation (520) du cache. Le moyen de fixation (520) peut être élastique ou rigide, démontable ou permanent, complet ou partiel. De préférence le moyen de fixation est un moyen d'encliquetage (520). De préférence le moyen d'encliquetage (520) prend la forme d'un clip (520).The branches (52) comprise at least one fixing means (520) of the cover. The fastening means (520) may be resilient or rigid, removable or permanent, complete or partial. Preferably the fastening means is a detent means (520). Preferably the latching means (520) takes the form of a clip (520).

Dans le mode de réalisation représenté chaque branche (52) comprend un moyen de fixation (520). Dans un mode de réalisation alternatif non représenté, le moyen de fixation est définitif, et peut être un rivet, de la colle, ou un arbre.In the illustrated embodiment each leg (52) comprises a fixing means (520). In an alternative embodiment not shown, the fixing means is permanent, and may be a rivet, glue, or a tree.

Les deux branches (52) illustrées sur la figure 1 présentent chacune une ouverture en U (521). Cette ouverture peut être réalisée par découpage. Le clip est alors formé par la partie complémentaire (522) du U. Préférentiellement la partie complémentaire (522) du U est pliée.The two branches (52) illustrated on the figure 1 each have a U-shaped opening (521). This opening can be performed by cutting. The clip is then formed by the complementary part (522) of the U. Preferably the complementary part (522) of the U is folded.

Sur la figure 1, seule la partie centrale (51) du cache (50) est agencée pour intercepter une partie des rayons lumineux émis par une source de lumière présente dans le module optique. Préférentiellement la partie supérieure de la partie centrale est apte à intercepter les rayons lumineux. De préférence, la partie centrale (51) présente une surface supérieure réfléchissante. En outre, chaque branche (520) est dépourvue de fonction optique et en particulier de fonction d'interception des rayons lumineux.On the figure 1 , only the central portion (51) of the cover (50) is arranged to intercept a portion of the light rays emitted by a light source present in the optical module. Preferably, the upper part of the central part is able to intercept the light rays. Preferably, the central portion (51) has a reflective upper surface. In addition, each branch (520) is devoid of optical function and in particular of interception function of light rays.

La partie centrale (51) comporte un bord avant dont le profil longitudinal comprend un ressaut (512), notamment oblique ou vertical, pour former un faisceau d'éclairage à coupure, conformément à la réglementation en matière d'éclairage des véhicules en vigueur dans la plupart des pays. Selon un mode avantageux de l'invention, la partie centrale (51) présente une forme hexagonale, le ou chaque côté de l'hexagone bordant le côté formant le bord avant joint le bord de l'hexagone formant l'extrémité longitudinale (514) de la partie centrale à partir de laquelle s'étend la ou chaque branche (52). Dans un autre mode de réalisation la partie centrale (51) peut comporter un muret s'étendant depuis le bord avant en dessous de la partie centrale (51).The central portion (51) has a front edge whose longitudinal profile comprises a projection (512), in particular oblique or vertical, to form a cut-off lighting beam, in accordance with the lighting regulation of the vehicles in force in most countries. According to an advantageous embodiment of the invention, the central portion (51) has a hexagonal shape, the or each side of the hexagon bordering the side forming the front edge joins the edge of the hexagon forming the longitudinal end (514) the central portion from which extends the or each branch (52). In another embodiment the central portion (51) may comprise a wall extending from the front edge below the central portion (51).

Le ressaut (512) s'étend transversalement à la première direction sur toute la largeur de la partie centrale. Dans ce cas, la partie centrale (51) comporte un bord arrière dont le profil est identique au bord avant. Il est à noter que la partie centrale peut être conformée de sorte à ce que le ressaut (512) s'étend uniquement sur une partie de la largeur de la partie centrale. Dans ce cas, le bord arrière peut être dépourvu de ressaut.The projection (512) extends transversely to the first direction over the entire width of the central portion. In this case, the central portion (51) has a rear edge whose profile is identical to the front edge. It should be noted that the central portion may be shaped so that the projection (512) extends only over part of the width of the central portion. In this case, the trailing edge may be missing.

La partie centrale (51) présente au moins un moyen détrompeur (513, 515), situé de préférence à l'une de ses extrémités longitudinales (514). De préférence, la partie centrale (51) présente au moins deux moyens détrompeurs (513, 515), chacun situé à l'une ou l'autre de ses extrémités longitudinales (514). Chaque moyen détrompeur (513, 515) est formé par un trou de la partie centrale (51), chaque trou (513, 515) présentant notamment une forme différente. Selon le mode de réalisation représenté sur la figure 1 l'un de ces trous peut présenter une forme circulaire (513), l'autre de ces trous présentant une forme oblongue (515). De préférence, les trous (513, 515) sont traversants. En variante, les trous peuvent être non traversants. Selon un autre mode de réalisation de l'invention, la partie centrale (51) présente un unique moyen détrompeur sous la forme d'un aimant.The central portion (51) has at least one polarizing means (513, 515), preferably located at one of its longitudinal ends (514). Preferably, the central portion (51) has at least two polarizing means (513, 515), each located at one or other of its longitudinal ends (514). Each polarizing means (513, 515) is formed by a hole in the central portion (51), each hole (513, 515) having in particular a different shape. According to the embodiment shown on the figure 1 one of these holes may have a circular shape (513), the other of these holes having an oblong shape (515). Preferably, the holes (513, 515) are through. Alternatively, the holes may be non-through. According to another embodiment of the invention, the central portion (51) has a single polarizing means in the form of a magnet.

La partie centrale (51) comprend au moins un moyen de positionnement (511) du cache (50) dans le module. De préférence le ou chaque moyen de positionnement (511) est situé à une extrémité de la partie centrale (514). De préférence, le ou chaque moyen de positionnement (511) est une rainure de positionnement (511) du cache. De préférence la rainure (511) s'étend transversalement à la première direction, notamment sur toute la largeur de la partie centrale (51).The central portion (51) comprises at least one positioning means (511) of the cover (50) in the module. Preferably the or each positioning means (511) is located at one end of the central portion (514). Preferably, the or each positioning means (511) is a positioning groove (511) of the cover. Preferably the groove (511) extends transversely to the first direction, especially over the entire width of the central portion (51).

Le cache (50) est une tôle emboutie pliée. De préférence, le cache (50) comporte une âme en acier. En variante, le cache (50) peut comporter une âme en polymère, par exemple en polycarbonate ou en polymétacrylate de méthyle (PMMA). Selon un mode de réalisation préféré, l'âme en acier est revêtue d'une couche d'argent.The cover (50) is a folded sheet metal. Preferably, the cover (50) comprises a steel core. Alternatively, the cover (50) may comprise a polymer core, for example polycarbonate or polymethylmethacrylate (PMMA). According to a preferred embodiment, the steel core is coated with a layer of silver.

La figure 2 est une représentation en éclaté d'un module optique (1) conforme à l'invention. Ce module optique (1) peut être monté dans un projecteur de véhicule automobile. En l'occurrence, ce module (1) produit un faisceau d'éclairage à coupure tel que pour une fonction d'éclairage du type « code » ou encore feux de croisement.The figure 2 is an exploded representation of an optical module (1) according to the invention. This optical module (1) can be mounted in a motor vehicle headlight. In this case, this module (1) produces a cut-off lighting beam such as for a lighting function of the "code" type or low beam.

Le module (1) comprend une source lumineuse (40) apte à émettre une des rayons lumineux, un masque inférieur (23) un élément optique de projection (30, 231) et un cache (50) conforme à l'invention.The module (1) comprises a light source (40) capable of emitting one of the light rays, a lower mask (23) an optical projection element (30, 231) and a cover (50) according to the invention.

L'élément optique (30, 231) est apte à projeter des rayons lumineux issus de la source lumineuse sous forme d'un faisceau lumineux selon une direction principale d'émission. L'élément optique de projection présente un foyer, ce foyer étant disposé de préférence au niveau du bord avant du cache. Dans un mode de réalisation préféré l'élément optique de projection est une lentille (30). De préférence la lentille est une lentille convergente (30). En variante, l'élément optique de projection est un réflecteur (231). En variante encore, l'élément optique de projection est une combinaison d'une ou plusieurs lentilles et d'un ou plusieurs réflecteurs. La direction principale d'émission est perpendiculaire à la première direction selon laquelle s'étend la partie principale du cache et à la deuxième direction selon laquelle s'étendent les branches. De préférence la lentille (30) est faite en polycarbonate (PC) ou en polyméthacrylate de méthyle (PMMA). De préférence la lentille (30) est moulée.The optical element (30, 231) is able to project light rays from the light source in the form of a light beam in a main direction of emission. The projection optical element has a focus, this focus being disposed preferably at the front edge of the cover. In a preferred embodiment the projection optical element is a lens (30). Preferably, the lens is a convergent lens (30). In a variant, the projection optical element is a reflector (231). In another variant, the projection optical element is a combination of one or more lenses and one or more reflectors. The main direction of emission is perpendicular to the first direction in which extends the main part of the cache and the second direction in which the branches extend. Preferably the lens (30) is made of polycarbonate (PC) or polymethylmethacrylate (PMMA). Preferably the lens (30) is molded.

Le cache (50) est destiné à former une coupure, notamment de type code, dans le faisceau lumineux projeté par l'élément optique (30, 231). De préférence le cache (50) est disposé entre la source lumineuse et l'élément optique (30).The cover (50) is intended to form a cutoff, in particular of the code type, in the light beam projected by the optical element (30, 231). Preferably the cover (50) is disposed between the light source and the optical element (30).

Le module optique (1) objet de l'invention comprend en outre un réflecteur (231) présentant un premier foyer et un second foyer. La source lumineuse (40) est disposée au premier foyer et le réflecteur (231) est agencé de sorte à ce que les rayons lumineux émis par la source lumineuse (40) soient réfléchis par le réflecteur au deuxième foyer. De préférence le réflecteur (231) est un réflecteur de forme généralement elliptique.The optical module (1) object of the invention further comprises a reflector (231) having a first focus and a second focus. The light source (40) is disposed at the first focus and the reflector (231) is arranged so that the light rays emitted by the light source (40) are reflected by the reflector at the second focus. Preferably the reflector (231) is a reflector of generally elliptical shape.

D'autre part, le module (1) comporte une pièce de style (235) dont une partie est disposée en avant de la lentille (30), selon la direction principale d'émission, le réflecteur (231) et la pièce de style sont venus de matière et forment un masque inférieur (23). De préférence le masque inférieur (23) comporte au moins un moyen de solidarisation (234) apte à coopérer avec le moyen de fixation (520) du cache (50). Dans un mode de réalisation préféré, le masque inférieur comporte deux moyens de solidarisation (234). De préférence les deux moyens de solidarisation (234) sont de part et d'autre du réflecteur (231). De préférence, les deux moyens de solidarisation (234) sont situés selon un axe perpendiculaire à l'axe optique. Dans un mode de réalisation préféré les deux moyens de solidarisation (234) sont de forme différente et/ou de taille différente. De préférence chaque moyen de solidarisation (234) est une fente. La ou chaque fente (234) est de forme rectangulaire. La ou chaque fente (234) peut être orientée dans le sens longitudinal du masque inférieur (23).On the other hand, the module (1) comprises a piece of style (235), part of which is arranged in front of the lens (30), in the main direction of emission, the reflector (231) and the piece of style have come from matter and form a lower mask (23). Preferably the lower mask (23) comprises at least one securing means (234) adapted to cooperate with the fastening means (520) of the cover (50). In a preferred embodiment, the lower mask has two securing means (234). Preferably the two securing means (234) are on either side of the reflector (231). Preferably, the two securing means (234) are located along an axis perpendicular to the optical axis. In a preferred embodiment the two securing means (234) are of different shape and / or of different size. Preferably each securing means (234) is a slot. The or each slot (234) is of rectangular shape. There where each slot (234) can be oriented in the longitudinal direction of the lower mask (23).

Le masque inférieur (23) comprend au moins deux protubérances, chacune de ces protubérances étant apte à coopérer avec l'un des trous du cache (513, 515). De préférence, chaque protubérance est située entre deux nervures. Les nervures peuvent s'étendre dans le sens longitudinal de du masque. Par exemple, chaque nervure part depuis la protubérance et s'étend radialement en s'écartant de celle-ci, et la protubérance peut être cylindrique ou tronconique, les nervures étant diamétralement opposées par rapport à cette protubérance. De préférence, les deux protubérances sont situées entre le réflecteur (231) et le moyen de solidarisation.The lower mask (23) comprises at least two protuberances, each of these protuberances being adapted to cooperate with one of the holes of the cover (513, 515). Preferably, each protuberance is located between two ribs. The ribs may extend in the longitudinal direction of the mask. For example, each rib extends from the protrusion and extends radially away from it, and the protuberance may be cylindrical or frustoconical, the ribs being diametrically opposed to this protuberance. Preferably, the two protuberances are located between the reflector (231) and the securing means.

Sur la figure 2, on peut noter que le masque inférieur (23) comprend deux côtés : le premier côté présente une surface concave, cette surface concave étant la surface réfléchissante du réflecteur (231) et la ou chaque protubérance est située sur le même côté du masque (23) que la surface concave. De préférence, les deux protubérances sont situées de part et d'autre du réflecteur (231). De préférence, les deux protubérances sont de formes différentes et/ou de tailles différentes. De préférence, les deux protubérances sont des pions. Dans un mode de réalisation préféré les pions sont de forme cylindrique.On the figure 2 it may be noted that the lower mask (23) comprises two sides: the first side has a concave surface, this concave surface being the reflective surface of the reflector (231) and the or each protuberance is located on the same side of the mask (23). ) than the concave surface. Preferably, the two protuberances are located on either side of the reflector (231). Preferably, the two protuberances are of different shapes and / or different sizes. Preferably, the two protuberances are pions. In a preferred embodiment the pins are of cylindrical shape.

Le masque inférieur (23) est en matière plastique. De préférence le masque inférieur (23) est moulé.The lower mask (23) is made of plastic. Preferably the lower mask (23) is molded.

La source lumineuse est une puce émettrice semi-conductrice, par exemple une diode électroluminescente (LED).The light source is a semiconductor emitter chip, for example a light emitting diode (LED).

Claims (11)

  1. Optical module comprising a light source (40) able to emit light rays, an optical projection element (30) intended to project light rays originating from the light source in the form of a light beam in a main direction of emission and a shield (50), the shield being positioned between the light source and the optical element, wherein the shield (50) is intended to form a cutoff, in particular of low-beam type, in the light beam projected by the optical projection element (30), the module furthermore comprising a reflector (231) having a first focal point and a second focal point, the light source (40) being positioned at the first focal point and the reflector being arranged such that light rays emitted by the light source are reflected by the reflector at the second focal point, the module furthermore including a style part (235) one portion of which is positioned in front of the optical projection element in the main direction of emission, the module being characterized in that
    the reflector and the style part are formed integrally and form a mask (23), the shield (50) comprising a central portion (51) extending in a first, in particular horizontal, direction and at least one branch (52), the branch(es) (52) extend from one longitudinal end (514) of the central portion in a second direction, forming an angle with the first direction, and wherein said shield (50) comprises at least one attachment means (520), situated on the or each branch (52) of said shield (50), wherein the mask (23) includes at least one joining means (234) able to interact with said at least one attachment means (520) of the shield (50).
  2. Optical module according to the preceding claim, wherein only the central portion (51) of the shield is designed to intercept said portion of the light rays.
  3. Light module according to the preceding claim, wherein the central portion (51) includes a front edge the profile of which comprises an, in particular oblique or vertical, projection (512).
  4. Light module according to one of the preceding claims, wherein the central portion (51) includes a front edge and a wall extending from the front edge below the central portion.
  5. Light module according to any one of the preceding claims, wherein the central portion (51) has at least one error-proofing means (513) preferably situated at one of its longitudinal ends (514).
  6. Light module according to the preceding claim, wherein the central portion (51) has at least two error-proofing means (513) each situated at one or the other of its longitudinal ends (514), each error-proofing means being formed by a hole in the central portion, each hole in particular having a different shape.
  7. Optical module according to the preceding claim, wherein the mask comprises at least two protrusions, each of these protrusions being able to interact with one of the holes of the shield, the two protrusions being of different shapes and/or of different sizes.
  8. Light module according to any one of the preceding claims, wherein the central portion (51) comprises at least one means (511) for positioning said shield in said module, preferably situated at one end of the central portion (514).
  9. Light module according to the preceding claim, wherein the positioning means is a groove (511) for positioning said shield, preferably extending transversely to the first direction, in particular over the entire width of the central portion (51).
  10. Light module according to one of the preceding claims, wherein the shield includes at least two branches (52) each extending from one or the other of the longitudinal ends (514) of the central portion (51) above the central portion in a second direction forming an angle, in particular of 90°, with the first direction, the two branches extending over different lengths and/or having different widths.
  11. Light module according to any one of the preceding claims, wherein said shield (50) is a bent and punched metal sheet, for example formed of a steel core coated with a layer of silver.
EP15173905.9A 2014-06-30 2015-06-25 Screen of a vehicle headlamp Active EP2966341B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1456229A FR3022978B1 (en) 2014-06-30 2014-06-30 COVER OF AN OPTICAL MODULE FOR MOTOR VEHICLE

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Publication Number Publication Date
EP2966341A1 EP2966341A1 (en) 2016-01-13
EP2966341B1 true EP2966341B1 (en) 2018-03-07

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EP15173905.9A Active EP2966341B1 (en) 2014-06-30 2015-06-25 Screen of a vehicle headlamp

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EP (1) EP2966341B1 (en)
FR (1) FR3022978B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10514145B1 (en) 2018-12-20 2019-12-24 Valeo North America, Inc. Optical systems for a headlamp
DE102020210320B4 (en) 2020-08-13 2022-03-03 Daimler Ag Modular headlight for a motor vehicle

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Publication number Priority date Publication date Assignee Title
US1549987A (en) * 1923-12-08 1925-08-18 Henry F Juergens Searchlight
DE3540130C1 (en) * 1985-11-13 1987-04-02 Hella Kg Hueck & Co Headlights for motor vehicles
JPH06314503A (en) * 1993-04-30 1994-11-08 Stanley Electric Co Ltd Projector-type head lamp
FR2895778B1 (en) * 2006-01-05 2008-12-26 Peugeot Citroen Automobiles Sa HEADLIGHT WITH ELLIPTICAL MODULE FOR MOTOR VEHICLE
JP4749968B2 (en) * 2006-07-31 2011-08-17 株式会社小糸製作所 Vehicle headlamp
US7635206B2 (en) * 2008-01-02 2009-12-22 Yujing Technology Co., Ltd. Light emitting diode lighting device having a lens connected to a hood
JP5288943B2 (en) * 2008-08-21 2013-09-11 株式会社小糸製作所 Vehicle lamp unit
AT507679B1 (en) * 2009-03-23 2010-07-15 Zizala Lichtsysteme Gmbh PROJECTION SYSTEM FOR A MOTOR VEHICLE HEADLAMP
CN102418906B (en) * 2010-09-10 2014-10-15 株式会社小糸制作所 Vehicle headlamp
FR2982006B1 (en) * 2011-09-13 2018-04-27 Valeo Vision OPTICAL MODULE WITH COMMON REFERENCE FOR LIGHTING AND / OR SIGNALING OF A MOTOR VEHICLE

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Publication number Publication date
FR3022978A1 (en) 2016-01-01
EP2966341A1 (en) 2016-01-13
FR3022978B1 (en) 2018-08-24

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