EP2921772B1 - Light module of a motor vehicle - Google Patents

Light module of a motor vehicle Download PDF

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Publication number
EP2921772B1
EP2921772B1 EP15159945.3A EP15159945A EP2921772B1 EP 2921772 B1 EP2921772 B1 EP 2921772B1 EP 15159945 A EP15159945 A EP 15159945A EP 2921772 B1 EP2921772 B1 EP 2921772B1
Authority
EP
European Patent Office
Prior art keywords
support wall
module according
light module
optical deflection
light
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
EP15159945.3A
Other languages
German (de)
French (fr)
Other versions
EP2921772A1 (en
Inventor
Damien Cabanne
Alberto Rodríguez Fuentes
José Castillo Jiménez
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 Iluminacion SA
Original Assignee
Valeo Iluminacion SA
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Publication date
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Publication of EP2921772A1 publication Critical patent/EP2921772A1/en
Application granted granted Critical
Publication of EP2921772B1 publication Critical patent/EP2921772B1/en
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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
    • F21S41/40—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
    • 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
    • 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
    • F21S41/10—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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/49—Attachment of the cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/30—Fog lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light module comprising means for transmitting a light flux towards optical deflection means for directing said flux towards an output face of the module. It relates more particularly to such a light module further comprising an occluder capable of blocking a portion of the light flux, arranged between the transmitting means and the optical deflection means.
  • These light emitting means are sources of light.
  • the function of the occulting is to block the parasitic rays of the luminous flux emitted by the emission means, so that only a narrow and targeted beam enters the optical deflection means, so that firstly, the rays there are reflected correctly towards the exit face of the module and that, on the other hand, no ray is reflected on adjacent walls delimiting these optical deflection means.
  • the patent application EP-A-2557357 shows a light module with a reflector and a concave arranged on a support wall.
  • the position of the occluder between the light emitting means and the optical deflection means must be determined precisely and that the shape of the occluder must be a function of the shape of the means. optical deflection, so that the occluder can block the first rays judged as parasites and let narrow beam rays directed to the optical deflection means. Particular attention is then paid to the machining of the occluder, as well as to the positioning means of this occluder with respect to the light emitting means.
  • the shape of the optical deflection means may vary from one vehicle to another, it is expected to associate the light modules polarizing means to prevent an incorrect occultor is associated with the optical deflection means, which would have the effect either of not correctly filling the blocking function of the parasitic rays, or of blocking a part of the flow correctly directed towards the optical deflection means and thus of limiting the lighting efficiency of the light module.
  • the invention aims to propose a light module arranged to allow a high accuracy in the shape and positioning of the occultor present in the module.
  • the light module according to the invention is intended to include means for transmitting a luminous flux towards a reflector having means for optically deflecting said flux towards the output of said module, said reflector comprising a support wall which is integral. optical deflection means and which is disposed across said optical deflection means so as to be disposed between said optical deflection means and the transmitting means.
  • the support wall comprises an occultation portion which is arranged facing the emission means and an edge of which is cut so as to form a concealer integrally formed with the support wall, able to pass only part of the emitted rays. by the transmitting means.
  • the embodiment of the occluder directly in the support wall, carrying the optical deflection surface and whose initial function is to stiffen the reflector, is particularly advantageous in that it results from an integration rather than an assembly of insert, which allows the saving of the insert and associated keying means, and allowing a precision in the arrangement of the functional areas relative to each other, thereby avoiding the multiplication of manufacturing and assembly games.
  • the reflector and the support portion are integrally formed in one piece.
  • the reflector, the support portion and the occluder form a single piece.
  • the edge is arranged to block rays that are not oriented towards the optical deflection means.
  • optical deflection means may be reflective surface sections arranged to form part or all of a lighting beam and / or signaling beam by means of the beams they reflect.
  • the illumination beam obtained by means of the rays reflected by the optical deflection means may for example be a road beam, a dipped beam, or a fog beam.
  • a signaling beam it may for example be a stop light, a night position lamp or a diurnal position lamp.
  • the support wall carries means for positioning the transmission means.
  • the support wall carries means for positioning the transmission means.
  • positioning means can be integrally formed with the support wall, and also comprise a pin projecting from the support wall for adjusting the position of the light emission means with respect to the module in two perpendicular directions. parallel to the plane of the support wall.
  • the positioning means further comprise a stop extending projecting from the support wall, for the adjustment in a third direction perpendicular to the first two directions, the height of said stop from the support wall being less than that of said pin.
  • the light module may have, on the support wall, means for fixing a radiator adapted to cover the emission means to ensure thermal cooling.
  • the fixing means may be arranged at at least one transverse end of the support wall while the positioning means are disposed in the vicinity of the occultation portion or between the latter and the fixing means.
  • the light module comprises the light emission means.
  • the light emitting means are supported directly or indirectly by the support wall, in particular via a printed circuit board, or for example via an element carrying the printed circuit board.
  • the invention also relates to a motor vehicle headlamp comprising two light modules as just described above and wherein said two modules are arranged transversely side by side.
  • longitudinal direction L the direction in the direction of movement of the motor vehicle
  • transverse direction T a horizontal direction and perpendicular to this longitudinal direction.
  • the vertical direction V will designate the direction perpendicular to the two previous ones, which also define a horizontal plane.
  • the trihedron L, V, T is placed on the figures for easy reading. But it will be understood that the light module can be arranged according to another orientation without departing from the context of the invention.
  • a motor vehicle headlight has two modules arranged side by side.
  • the following description will detail the structure of a module and it is understood that it can be applied to each of the modules.
  • a light module 1 comprises means 2 for transmitting a light flux and a reflector 4, opposite which are disposed said transmitting means, adapted to concentrate the emitted flux to an output face of the module, not shown here.
  • the module further comprises heat exchange means 6 formed by a radiator attached to the reflector.
  • the light-emitting means comprise here a printed circuit board supporting a light-emitting diode 8.
  • the diode is able to emit, on the basis of an electrical control instruction transmitted by the printed circuits, targeted light rays in the direction of the light-emitting diode. reflector.
  • the light-emitting means may be carried by an interchangeable modular element 10, on one of the faces of which the printed circuit board is made integral, and which is adapted to be fixed in a housing dug in the radiator, so that the carrier face of the diode is turned towards the reflector.
  • the modular element thus facilitates the manipulation of the diode when it is used for its replacement by a new diode.
  • the reflector comprises optical deflection means 12 and a support frame 14, which allows in particular the attachment of the reflector in the light module.
  • the optical deflection means have the shape of a substantially elliptical collector, which has a reflective inner surface.
  • the reflective inner surface of the collector may not be perfectly elliptical and comprise one or more strips 16 of specific or complex profiles in order to optimize the light distribution in the lighting beam.
  • the transverse assembly of these strips forms a generally elliptical general shape, so that the collector has a first focus, on which we will try to arrange the light-emitting diode as precisely as possible, and a second focus on which we have the face of module output.
  • the collector is delimited in a vertical dimension by an upper edge 18 and a lower edge 20, and in a transverse dimension by lateral edges 22.
  • the upper edge of the collector has a substantially elliptical profile while the lower edge of the collector has a profile. accident, which may vary from one module to another, as can be seen in particular on the figure 1 .
  • the support frame 14 comprises at least one rising wall 24 laterally bordering the collector, a substantially horizontal bottom wall 26 which is connected to the lower edge 20 of the collector, and a support wall 28 secured to the upper end of the rising wall. 24 and which extends across the collector, substantially parallel to the bottom wall so as to partially cover the collector.
  • the walls of the support frame are coated with aluminum, especially for aesthetic reasons. These walls do not function to play a role of reflection of light rays but only stiffening of the module. Thus, as will be described in more detail below, it is sought to direct a maximum of the light rays emitted towards the reflecting surface of the optical deflection means which is arranged to allow correct orientation of the light rays at the output of the module, and to block the parasitic rays that could move towards these aluminum walls of the support frame.
  • the support wall 28 is substantially flat. It has a bottom face facing the manifold and an opposite top face. As it is visible on the figure 1 the support wall is arranged across the reflector so that an upper opening 32 is arranged between a rear edge 34 of the transversely extending support wall 28 and the upper edge 18 of the collector, said edge being described as rear edge depending on the general direction of light emission and the direction of this emission to the output of the module, towards the front of the vehicle.
  • the support wall comprises according to the invention an occultation portion 36 which is disposed substantially in the center of the support wall in the transverse dimension.
  • the occultation portion is further distinguished from the rest of the support wall in that it has a vertical stall, by digging the upper face of the support wall. This vertical stall, as it is particularly visible on the figure 2 , does not necessarily extend over the entire longitudinal dimension of the support wall, but originates at the rear edge 34 of the support wall.
  • the support wall carries on its upper face 30 near the occultation portion, positioning means 38 adapted to cooperate with the light-emitting means and it also bears on its upper face, this time with at least one of its transverse ends, fixing means 40 to the radiator.
  • the positioning means 38 take the form of two pairs respectively formed of a pin 42 and a stop 44, these pairs being arranged transversely on either side of the occulting portion.
  • the pin 42 has a cone-shaped portion which protrudes from the support wall for receiving by fitting the light-emitting means pierced with a bore of complementary conical shape. The pin is thus able to maintain the position in two directions, transverse and longitudinal, of the transmission means relative to the support wall and therefore with respect to the occultation portion.
  • the abutment 44 is disposed near the pin and extends projecting to a height less than that of the pin, to allow the transmission means to come to rest vertically on the upper face of the stop while they cooperate with the neighbor pawn. The stop is thus able to allow the positioning of the transmission means in the third direction.
  • the fixing means 40 take the form of drums, which extend substantially perpendicularly projecting from the support wall. These drums can be integral with the support wall or be reported thereon. They are able to cooperate with complementary fixing means 46 which are carried by the radiators and which are visible on the figure 4 .
  • the occulting portion 30 acts as a concealer, formed directly in the support wall, and it is distinguished from the support wall, in addition to its vertical stall in the embodiment shown, essentially by the particular profile of its edge 48 which is corrugated, as opposed to the right rear edge 32 of the support wall extending transversely on either side of the occultation portion.
  • the ripple of the edge profile 48 of the occultation portion is different according to each module and the shape of the optical deflection means. It will be understood, however, that the profile of the edge 48 of the occultation portion advantageously has two lateral sections 50 which extend substantially in the transverse continuity of the rear edge of the support wall and which frame a central section 52 offset longitudinally inwards of the support wall.
  • This particular shape of the profile is obtained by removing material in the central part of the occultation portion, so as to form transversely two lateral zones framing a central zone, of smaller longitudinal dimension.
  • the longitudinal junction 49 between each lateral zone and the central zone may be straight, or substantially inclined relative to the longitudinal direction as is visible on the figure 2 .
  • the function of the lateral zones of the occluder is to block the parasitic rays which tend to move towards the rising walls of the reflector, while the function of the longitudinal clearance formed by the central zone is on the one hand to allow passage, in the zone released, with rays emitted in the direction of the optical deflection surface, and secondly to block by the edge 48 of the occulteur the first parasitic rays directed towards the connection line 54 between the lower edge of the collector and the bottom wall of the reflector support frame.
  • the corrugation of the profile of the edge 48 of the occultation portion is made to correspond to the shape of this connection line 54.
  • the profile of the edge 48 in the central zone is curved, to correspond to the longitudinal shrinkage 56 formed substantially in the center of the connecting line 54, visible on the figure 3 .
  • the reflector is made as visible only on the figure 1 .
  • the support frame 14 and the optical deflection means 12 are integral, and the support frame carries the positioning means and the fastening means formed integrally with the support wall 28, which further comprises the occultation portion 30. It is understood that it is therefore to the machining of this single piece that we can accurately ensure the respect of the ribs between the fastening means and the occluder.
  • the heat exchange means are mounted on the support frame, by the cooperation of the fastening means 40 integral with the frame and complementary means 46 carried by the heat exchange means. These cover the upper opening arranged between the support wall and the upper edge of the collector.
  • the light-emitting means are mounted on the interchangeable modular elements 10, and these are made integral with the radiator, in a position such that the diode 8 is disposed substantially at the first focus of the elliptical collector.
  • This position is ensured by mounting the modular element in the heat exchange means and cooperating the interchangeable modular element, or directly the printed circuit board carried by this modular element, with the positioning means. It can be provided a sliding mounting of the modular element in the heat exchange means to take into account a possible mounting set.
  • the diode In this position, where the diode is disposed substantially at the first focus of the collector, the diode is able to emit a light flux towards the optical deflection means, with the occultation portion which is arranged partly on the path of the emitted rays, between the diode and the optical deflection means.
  • the occultor is thus disposed on the path of the luminous flux, directly at the output of the diode, before any reflection of these rays and the edge of the occultation portion is correctly positioned to sort the parasitic rays of this flow, which are blocked. by the occultation portion, rays correctly directed towards the optical deflection means, which pass through the longitudinal clearance formed by the cutting of the cutting edge.
  • the occultation portion has a vertical stall as can be described above, and it is found in the mounted module that this stall is made in the direction of the distance of the transmitting means.
  • the light module can be attached to the vehicle structure to form all or part of a projector of the vehicle.
  • the module is arranged so that the support wall extends horizontally and so that the side walls of the support frame extend substantially vertically, but it will be understood that the orientation general module could vary without departing from the context of the invention, depending on the final application that is made.

Description

La présente invention concerne un module lumineux comportant des moyens d'émission d'un flux lumineux en direction de moyens de déviation optique pour orienter ledit flux vers une face de sortie du module. Elle concerne plus particulièrement un tel module lumineux comportant en outre un occulteur apte à bloquer une partie du flux lumineux, disposé entre les moyens d'émission et les moyens de déviation optique. Ces moyens d'émission de lumière sont des sources de lumières.The present invention relates to a light module comprising means for transmitting a light flux towards optical deflection means for directing said flux towards an output face of the module. It relates more particularly to such a light module further comprising an occluder capable of blocking a portion of the light flux, arranged between the transmitting means and the optical deflection means. These light emitting means are sources of light.

Dans les modules lumineux de ce type, l'occulteur a pour rôle de bloquer les rayons parasites du flux lumineux émis par les moyens d'émission, afin que seul un faisceau étroit et ciblé pénètre dans les moyens de déviation optique, pour que d'une part les rayons y soient réfléchis correctement vers la face de sortie du module et que d'autre part aucun rayon ne se réfléchisse sur des parois voisines délimitant ces moyens de déviation optiques. La demande de brevet EP-A-2557357 montre un module lumineux avec un réflecteur et un occulteur disposé sur une paroi support.In light modules of this type, the function of the occulting is to block the parasitic rays of the luminous flux emitted by the emission means, so that only a narrow and targeted beam enters the optical deflection means, so that firstly, the rays there are reflected correctly towards the exit face of the module and that, on the other hand, no ray is reflected on adjacent walls delimiting these optical deflection means. The patent application EP-A-2557357 shows a light module with a reflector and a concave arranged on a support wall.

Pour un module lumineux donné, on comprend que la position de l'occulteur entre les moyens d'émission de lumière et les moyens de déviation optique doit être déterminée avec précision et que la forme de l'occulteur doit être fonction de la forme des moyens de déviation optique, pour que l'occulteur puisse bloquer les premiers rayons jugés comme parasites et laisser passer les rayons du faisceau étroit dirigés vers les moyens de déviation optique. On fait alors particulièrement attention à l'usinage de l'occulteur, ainsi qu'aux moyens de mise en position de cet occulteur par rapport aux moyens d'émission de lumière.For a given light module, it is understood that the position of the occluder between the light emitting means and the optical deflection means must be determined precisely and that the shape of the occluder must be a function of the shape of the means. optical deflection, so that the occluder can block the first rays judged as parasites and let narrow beam rays directed to the optical deflection means. Particular attention is then paid to the machining of the occluder, as well as to the positioning means of this occluder with respect to the light emitting means.

Par ailleurs, la forme des moyens de déviation optique pouvant varier d'un véhicule à l'autre, on prévoit d'associer aux modules lumineux des moyens de détrompage pour éviter qu'un mauvais occulteur soit associé aux moyens de déviation optique, ce qui aurait pour effet soit de ne pas remplir correctement la fonction de blocage des rayons parasites, soit de bloquer une partie du flux correctement dirigé vers les moyens de déviation optique et donc de limiter l'efficacité d'éclairage du module lumineux.Moreover, the shape of the optical deflection means may vary from one vehicle to another, it is expected to associate the light modules polarizing means to prevent an incorrect occultor is associated with the optical deflection means, which would have the effect either of not correctly filling the blocking function of the parasitic rays, or of blocking a part of the flow correctly directed towards the optical deflection means and thus of limiting the lighting efficiency of the light module.

L'invention vise à proposer un module lumineux agencé pour permettre une grande précision dans la forme et le positionnement de l'occulteur présent dans le module.The invention aims to propose a light module arranged to allow a high accuracy in the shape and positioning of the occultor present in the module.

Le module lumineux selon l'invention est destiné à comprendre des moyens d'émission d'un flux lumineux en direction d'un réflecteur présentant des moyens de déviation optique dudit flux vers la sortie dudit module, ledit réflecteur comportant une paroi support qui est solidaire des moyens de déviation optique et qui est disposée en travers desdits moyens de déviation optique de manière à être disposée entre lesdits moyens de déviation optique et les moyens d'émission. La paroi support comporte une portion d'occultation qui est disposée en regard des moyens d'émission et dont un bord est découpé de manière à former un occulteur venu de matière avec la paroi support, apte à laisser passage seulement à une partie des rayons émis par les moyens d'émission.The light module according to the invention is intended to include means for transmitting a luminous flux towards a reflector having means for optically deflecting said flux towards the output of said module, said reflector comprising a support wall which is integral. optical deflection means and which is disposed across said optical deflection means so as to be disposed between said optical deflection means and the transmitting means. The support wall comprises an occultation portion which is arranged facing the emission means and an edge of which is cut so as to form a concealer integrally formed with the support wall, able to pass only part of the emitted rays. by the transmitting means.

La réalisation de l'occulteur directement dans la paroi support, porteuse de la surface de déviation optique et dont la fonction initiale est de rigidifier le réflecteur, est notamment avantageuse en ce qu'elle résulte d'une intégration plutôt que d'un assemblage de pièce rapportée, ce qui permet l'économie de la pièce rapportée et des moyens de détrompage associés, et ce qui permet une précision dans la disposition des zones fonctionnelles l'une par rapport à l'autre, en évitant de la sorte la multiplication des jeux de fabrication et de montage. Selon une réalisation le réflecteur et la partie de support sont venus de matière en une seule pièce. Ainsi, le réflecteur, la partie de support et l'occulteur forment une seule pièce monobloc.The embodiment of the occluder directly in the support wall, carrying the optical deflection surface and whose initial function is to stiffen the reflector, is particularly advantageous in that it results from an integration rather than an assembly of insert, which allows the saving of the insert and associated keying means, and allowing a precision in the arrangement of the functional areas relative to each other, thereby avoiding the multiplication of manufacturing and assembly games. According to one embodiment, the reflector and the support portion are integrally formed in one piece. Thus, the reflector, the support portion and the occluder form a single piece.

Selon différentes caractéristiques de l'invention, prises seules ou en combinaison, on travaille sur la position et la forme du bord découpé pour optimiser le blocage des rayons parasites.According to various features of the invention, taken alone or in combination, one works on the position and the shape of the cut edge to optimize the blockage of parasitic rays.

Par exemple, le bord est agencé de manière à bloquer des rayons qui ne seraient pas orientés vers les moyens de déviation optique.For example, the edge is arranged to block rays that are not oriented towards the optical deflection means.

Ces moyens de déviation optique peuvent être des sections de surface réfléchissante agencés de manière à former une partie ou la totalité d'un faisceau d'éclairage et/ou de signalisation au moyen des rayons qu'elles réfléchissent. Il est dans ce cas particulièrement utile de bloquer des rayons allant vers une surface réfléchissante distincte de ces moyens de déviation optique, par exemple une portion aluminée dont la forme est esthétique mais sans rôle sur la formation du faisceau. En effet s'ils n'étaient pas bloqués, ces rayons seraient réfléchis dans des directions non souhaités. Par exemple, dans le cadre d'un faisceau à coupure, tel qu'un faisceau de croisement, ces rayons pourraient passer au-dessus de la coupure et éblouir les conducteurs venant en sens inverse.These optical deflection means may be reflective surface sections arranged to form part or all of a lighting beam and / or signaling beam by means of the beams they reflect. In this case, it is particularly useful to block radii going towards a reflecting surface distinct from these optical deflection means, for example an aluminized portion whose shape is aesthetic but without any role on the formation of the beam. Indeed if they were not blocked, these rays would be reflected in undesired directions. For example, in the context of a cut-off beam, such as a passing beam, these rays could pass over the cut and dazzle the drivers coming in the opposite direction.

Le faisceau d'éclairage obtenu au moyen des rayons réfléchis par les moyens de déviation optique, peut par exemple être un faisceau route, un faisceau de croisement, ou un faisceau antibrouillard. Dans le cadre d'un faisceau de signalisation, ce peut par exemple être un feu stop, un feu de position nocturne ou un feu de position diurne.The illumination beam obtained by means of the rays reflected by the optical deflection means may for example be a road beam, a dipped beam, or a fog beam. In the context of a signaling beam, it may for example be a stop light, a night position lamp or a diurnal position lamp.

Le module selon l'invention peut donc présenter une ou plusieurs des caractéristiques suivantes :

  • la portion d'occultation est disposée transversalement au centre de la paroi support ;
  • la portion d'occultation s'étend dans un plan décalé verticalement, dans le sens de l'éloignement des moyens d'émission, par rapport au reste de la paroi support ; ce sens d'éloignement peut correspondre au sens d'émission globale des moyens d'émission d'un flux lumineux, ce sens d'émission globale correspondant à la direction moyenne autour de laquelle se répartissent les rayons lumineux.
  • la paroi support est disposée en travers desdits moyens de déviation optique de manière à laisser un passage entre lesdits moyens de déviation optique et un bord arrière de la paroi support, et le bord de la portion d'occultation, qui est ondulé, s'étend à ces extrémités transversales dans la continuité dudit bord arrière de la paroi support qui est droit ;
  • le réflecteur comporte un cadre de support des moyens de déviation optique qui comporte au moins une paroi délimitant ces moyens de déviation optique, et le bord de la portion d'occultation est découpé pour correspondre à une position donnée de cette paroi délimitant lesdits moyens de déviation optique ;
  • le bord de la portion d'occultation est découpé et agencé de manière à recevoir des rayons lumineux émis directement par la source lumineuse et qui sans ce bord iraient en dehors des moyens de déviation optique ; selon un exemple de réalisation, les points définissant le bord de la portion d'occultation, les points délimitant le bord des surfaces des moyens de déviation optique et au moins un point de la source sont alignés ;
  • le bord de ladite section centrale présente une forme ondulée ;
  • les parois délimitant lesdits moyens de déviation optique comportent deux parois qui délimitent latéralement de part et d'autre les moyens de déviation optique et qui se raccordent perpendiculairement à la paroi de support ainsi qu'une paroi inférieure qui se raccorde au bord inférieur des moyens de déviation optique, opposé à la paroi support, et la portion d'occultation présente deux sections latérales dans lesquelles le bord de la portion d'occultation s'étend dans la continuité transversale du bord arrière de la paroi support ainsi qu'une section centrale décalée longitudinalement vers l'intérieur de la paroi support. Le bord de cette section centrale peut présenter une forme ondulée, la forme ondulée du bord de ladite section centrale pouvant être fonction de la forme de la ligne de raccordement du bord inférieur des moyens de déviation optique et de la paroi inférieure du cadre de support.
The module according to the invention may therefore have one or more of the following characteristics:
  • the occultation portion is disposed transversely to the center of the support wall;
  • the occultation portion extends in a vertically offset plane, in the direction of the distance of the transmitting means, relative to the rest of the support wall; this sense of distance may correspond to the global transmission direction of the emission means of a luminous flux, this global transmission direction corresponding to the mean direction around which the light rays are distributed.
  • the support wall is disposed across said optical deflection means so as to leave a passage between said optical deflection means and a rear edge of the support wall, and the edge of the occultation portion, which is corrugated, extends at these transverse ends in the continuity of said rear edge of the support wall which is straight;
  • the reflector comprises a support frame of the optical deflection means which comprises at least one wall delimiting these optical deflection means, and the edge of the occultation portion is cut to correspond to a given position of this wall delimiting said optical deflection means;
  • the edge of the occultation portion is cut and arranged to receive light rays emitted directly from the light source and which without this edge would go outside the optical deflection means; according to an exemplary embodiment, the points defining the edge of the occultation portion, the points delimiting the edge of the surfaces of the optical deflection means and at least one point of the source are aligned;
  • the edge of said central section has a corrugated shape;
  • the walls delimiting said optical deflection means comprise two walls which laterally delimit on both sides the optical deflection means and which are connected perpendicularly to the support wall, and a bottom wall which is connected to the lower edge of the means of deflection. optical deflection, opposite to the support wall, and the occultation portion has two lateral sections in which the edge of the occultation portion extends in the transverse continuity of the rear edge of the support wall and an offset central section longitudinally inwardly of the support wall. The edge of this central section may have a corrugated shape, the corrugated shape of the edge of said central section may be a function of the shape of the connection line of the lower edge of the optical deflection means and the bottom wall of the support frame.

Selon une autre caractéristique de l'invention, la paroi support porte des moyens de positionnement des moyens d'émission. Ainsi, on s'assure le bon positionnement des moyens d'émission par rapport à l'occulteur porté par la paroi support.According to another characteristic of the invention, the support wall carries means for positioning the transmission means. Thus, it ensures the correct positioning of the transmission means relative to the occulteur carried by the support wall.

Ces moyens de positionnement peuvent être venus de matière avec la paroi support, et par ailleurs comporter un pion s'étendant en saillie de la paroi support pour le réglage de la position des moyens d'émission de lumière par rapport au module selon deux directions perpendiculaires parallèles au plan de la paroi support. Dans ce cas, les moyens de positionnement comportent en outre une butée s'étendant en saillie de la paroi support, pour le réglage selon une troisième direction perpendiculaire aux deux premières directions, la hauteur de ladite butée depuis la paroi support étant moindre que celle dudit pion.These positioning means can be integrally formed with the support wall, and also comprise a pin projecting from the support wall for adjusting the position of the light emission means with respect to the module in two perpendicular directions. parallel to the plane of the support wall. In this case, the positioning means further comprise a stop extending projecting from the support wall, for the adjustment in a third direction perpendicular to the first two directions, the height of said stop from the support wall being less than that of said pin.

Selon une caractéristique de l'invention, le module lumineux peut présenter, sur la paroi support, des moyens de fixation d'un radiateur apte à recouvrir les moyens d'émission pour en assurer le refroidissement thermique. Dans ce cas, les moyens de fixation peuvent être disposés à au moins une extrémité transversale de la paroi support tandis que les moyens de positionnement sont disposés au voisinage de la portion d'occultation ou entre celle-ci et les moyens de fixation.According to one characteristic of the invention, the light module may have, on the support wall, means for fixing a radiator adapted to cover the emission means to ensure thermal cooling. In this case, the fixing means may be arranged at at least one transverse end of the support wall while the positioning means are disposed in the vicinity of the occultation portion or between the latter and the fixing means.

Selon une réalisation, le module lumineux comprend les moyens d'émission de lumière.According to one embodiment, the light module comprises the light emission means.

Selon une réalisation, les moyens d'émission de lumière sont supportés directement ou indirectement par la paroi de support, notamment via une carte de circuit imprimé, ou par exemple via un élément portant la carte de circuit imprimé.According to one embodiment, the light emitting means are supported directly or indirectly by the support wall, in particular via a printed circuit board, or for example via an element carrying the printed circuit board.

L'invention concerne également un projecteur de véhicule automobile comportant deux modules lumineux tels qu'ils viennent d'être décrits précédemment et dans lequel lesdits deux modules sont disposés transversalement côte à côte.The invention also relates to a motor vehicle headlamp comprising two light modules as just described above and wherein said two modules are arranged transversely side by side.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée d'un mode de réalisation qui va suivre et pour la compréhension de laquelle on se reportera aux dessins annexés parmi lesquels :

  • la figure 1 est une vue en perspective d'un réflecteur d'un module lumineux selon l'invention, dans lequel un occulteur est venu de matière avec une paroi support solidaire du réflecteur formant moyen de déviation optique d'un flux lumineux émis par une source de lumière, ladite source de lumière étant représentée en suspens, sans son support de fixation ici non représenté pour faciliter la visibilité de l'occulteur ;
  • la figure 2 est une vue en perspective d'un détail de la figure 1 ;
  • la figure 3 est une vue d'ensemble d'un module lumineux selon l'invention dans laquelle on a représenté cette fois le support de fixation de la source de lumière rapporté sur le réflecteur ;
  • et la figure 4 est une vue en coupe longitudinale du module de la figure 3.
Other features and advantages of the invention will appear on reading the detailed description of an embodiment which follows and for the understanding of which reference will be made to the appended drawings in which:
  • the figure 1 is a perspective view of a reflector of a light module according to the invention, in which an occluder is integral with a support wall integral with the reflector forming optical deflection means of a luminous flux emitted by a light source said light source being shown in abeyance, without its attachment support not shown here to facilitate visibility of the occluder;
  • the figure 2 is a perspective view of a detail of the figure 1 ;
  • the figure 3 is an overview of a light module according to the invention in which there is shown this time the mounting bracket of the light source attached to the reflector;
  • and the figure 4 is a longitudinal sectional view of the module of the figure 3 .

Dans ce qui suit, on désignera par direction longitudinale L la direction dans le sens de circulation du véhicule automobile, et par direction transversale T une direction horizontale et perpendiculaire à cette direction longitudinale. La direction verticale V désignera la direction perpendiculaire aux deux précédentes, qui définissent par ailleurs un plan horizontal. Le trièdre L,V,T est placé sur les figures pour faciliter la lecture. Mais on comprendra que le module lumineux peut être agencé selon une autre orientation sans sortir du contexte de l'invention.In what follows, will be designated by longitudinal direction L the direction in the direction of movement of the motor vehicle, and transverse direction T a horizontal direction and perpendicular to this longitudinal direction. The vertical direction V will designate the direction perpendicular to the two previous ones, which also define a horizontal plane. The trihedron L, V, T is placed on the figures for easy reading. But it will be understood that the light module can be arranged according to another orientation without departing from the context of the invention.

Dans le mode de réalisation illustré, notamment visible dans son ensemble sur les figures 1 et 3, un projecteur de véhicule automobile comporte deux modules disposés côte à côte. La description qui va suivre va détailler la structure d'un module et l'on comprend qu'elle pourra être appliquée à chacun des modules.In the embodiment illustrated, in particular visible as a whole on the figures 1 and 3 , a motor vehicle headlight has two modules arranged side by side. The following description will detail the structure of a module and it is understood that it can be applied to each of the modules.

Un module lumineux 1 comporte des moyens d'émission 2 d'un flux lumineux et un réflecteur 4, en regard duquel sont disposés lesdits moyens d'émission, apte à concentrer le flux émis vers une face de sortie du module, ici non représentée. Le module comporte en outre des moyens d'échange thermique 6 formés par un radiateur rapporté sur le réflecteur.A light module 1 comprises means 2 for transmitting a light flux and a reflector 4, opposite which are disposed said transmitting means, adapted to concentrate the emitted flux to an output face of the module, not shown here. The module further comprises heat exchange means 6 formed by a radiator attached to the reflector.

Les moyens d'émission de lumière comportent ici une plaque de circuits imprimés supportant une diode électroluminescente 8. La diode est apte à émettre, sur la base d'une instruction de commande électrique transmise par les circuits imprimés, des rayons lumineux ciblés en direction du réflecteur. Tel que cela est visible dans le mode de réalisation illustré sur la figure 4, les moyens d'émission de lumière peuvent être portés par un élément modulaire interchangeable 10, sur l'une des faces duquel la plaque de circuits imprimés est rendue solidaire, et qui est apte à être fixé dans un logement creusé dans le radiateur, de sorte que la face porteuse de la diode est tournée vers le réflecteur. L'élément modulaire facilite ainsi la manipulation de la diode lorsqu'elle est usagée pour son remplacement par une diode neuve.The light-emitting means comprise here a printed circuit board supporting a light-emitting diode 8. The diode is able to emit, on the basis of an electrical control instruction transmitted by the printed circuits, targeted light rays in the direction of the light-emitting diode. reflector. As can be seen in the embodiment illustrated on the figure 4 , the light-emitting means may be carried by an interchangeable modular element 10, on one of the faces of which the printed circuit board is made integral, and which is adapted to be fixed in a housing dug in the radiator, so that the carrier face of the diode is turned towards the reflector. The modular element thus facilitates the manipulation of the diode when it is used for its replacement by a new diode.

Le réflecteur comporte des moyens de déviation optique 12 et un cadre de support 14, qui permet notamment la fixation du réflecteur dans le module lumineux.The reflector comprises optical deflection means 12 and a support frame 14, which allows in particular the attachment of the reflector in the light module.

Les moyens de déviation optique présentent la forme d'un collecteur sensiblement elliptique, qui comporte une surface interne réfléchissante. Tel que cela est notamment visible sur les figures 1 et 4, la surface interne réfléchissante du collecteur peut ne pas être parfaitement elliptique et comporter une ou plusieurs bandes 16 de profils spécifiques ou complexes en vue d'optimiser la répartition lumineuse dans le faisceau d'éclairage. L'assemblage transversal de ces bandes forme une allure générale sensiblement elliptique, de sorte que le collecteur présente un premier foyer, sur lequel on va chercher à disposer le plus précisément possible la diode électroluminescente, et un second foyer sur lequel on dispose la face de sortie du module.The optical deflection means have the shape of a substantially elliptical collector, which has a reflective inner surface. As it is particularly visible on the figures 1 and 4 , the reflective inner surface of the collector may not be perfectly elliptical and comprise one or more strips 16 of specific or complex profiles in order to optimize the light distribution in the lighting beam. The transverse assembly of these strips forms a generally elliptical general shape, so that the collector has a first focus, on which we will try to arrange the light-emitting diode as precisely as possible, and a second focus on which we have the face of module output.

Le collecteur est délimité dans une dimension verticale par un bord supérieur 18 et un bord inférieur 20, et dans une dimension transversale par des bords latéraux 22. Le bord supérieur du collecteur présente un profil sensiblement elliptique tandis que le bord inférieur du collecteur présente un profil accidenté, pouvant varier d'un module à un autre, tel que cela est visible notamment sur la figure 1.The collector is delimited in a vertical dimension by an upper edge 18 and a lower edge 20, and in a transverse dimension by lateral edges 22. The upper edge of the collector has a substantially elliptical profile while the lower edge of the collector has a profile. accident, which may vary from one module to another, as can be seen in particular on the figure 1 .

Le cadre de support 14 comporte au moins une paroi montante 24 bordant latéralement le collecteur, une paroi inférieure 26 sensiblement horizontale qui se raccorde au bord inférieur 20 du collecteur, ainsi qu'une paroi support 28 solidaire de l'extrémité supérieure de la paroi montante 24 et qui s'étend en travers du collecteur, sensiblement parallèlement à la paroi inférieure de manière à recouvrir partiellement le collecteur.The support frame 14 comprises at least one rising wall 24 laterally bordering the collector, a substantially horizontal bottom wall 26 which is connected to the lower edge 20 of the collector, and a support wall 28 secured to the upper end of the rising wall. 24 and which extends across the collector, substantially parallel to the bottom wall so as to partially cover the collector.

Les parois du cadre de support sont revêtus d'aluminium, notamment pour des questions esthétiques. Ces parois n'ont pas office à jouer un rôle de réflexion des rayons lumineux mais seulement de rigidification du module. Ainsi, tel que cela sera décrit plus en détail par la suite, on cherche à diriger un maximum des rayons lumineux émis vers la surface réfléchissante des moyens de déviation optique qui est agencée pour permettre une orientation correcte des rayons lumineux en sortie du module, et à bloquer les rayons parasites qui pourraient se diriger vers ces parois en aluminium du cadre de support.The walls of the support frame are coated with aluminum, especially for aesthetic reasons. These walls do not function to play a role of reflection of light rays but only stiffening of the module. Thus, as will be described in more detail below, it is sought to direct a maximum of the light rays emitted towards the reflecting surface of the optical deflection means which is arranged to allow correct orientation of the light rays at the output of the module, and to block the parasitic rays that could move towards these aluminum walls of the support frame.

La paroi support 28 est sensiblement plane. Elle présente une face inférieure tournée vers le collecteur et une face supérieure 30 opposée. Tel que cela est visible sur la figure 1, la paroi support est disposée en travers du réflecteur de sorte qu'une ouverture supérieure 32 est aménagée entre un bord arrière 34 de la paroi support 28, qui s'étend transversalement, et le bord supérieur 18 du collecteur, ledit bord étant qualifié de bord arrière en fonction de la direction générale d'émission de lumière et du sens de cette émission vers la sortie du module, vers l'avant du véhicule.The support wall 28 is substantially flat. It has a bottom face facing the manifold and an opposite top face. As it is visible on the figure 1 the support wall is arranged across the reflector so that an upper opening 32 is arranged between a rear edge 34 of the transversely extending support wall 28 and the upper edge 18 of the collector, said edge being described as rear edge depending on the general direction of light emission and the direction of this emission to the output of the module, towards the front of the vehicle.

La paroi support comporte selon l'invention une portion d'occultation 36 qui est disposée sensiblement au centre de la paroi support dans la dimension transversale. Dans le mode de réalisation illustré, la portion d'occultation se distingue en outre du reste de la paroi support en ce qu'elle présente un décrochage vertical, par creusement de la face supérieure de la paroi support. Ce décrochage vertical, tel que cela est particulièrement visible sur la figure 2, ne s'étend pas nécessairement sur toute la dimension longitudinale de la paroi support, mais prend origine au niveau du bord arrière 34 de la paroi support.The support wall comprises according to the invention an occultation portion 36 which is disposed substantially in the center of the support wall in the transverse dimension. In the illustrated embodiment, the occultation portion is further distinguished from the rest of the support wall in that it has a vertical stall, by digging the upper face of the support wall. This vertical stall, as it is particularly visible on the figure 2 , does not necessarily extend over the entire longitudinal dimension of the support wall, but originates at the rear edge 34 of the support wall.

La paroi support porte sur sa face supérieure 30 à proximité de la portion d'occultation, des moyens de positionnement 38 aptes à coopérer avec les moyens d'émission de lumière et elle porte également sur sa face supérieure, cette fois à au moins une de ses extrémités transversales, des moyens de fixation 40 au radiateur.The support wall carries on its upper face 30 near the occultation portion, positioning means 38 adapted to cooperate with the light-emitting means and it also bears on its upper face, this time with at least one of its transverse ends, fixing means 40 to the radiator.

Les moyens de positionnement 38 prennent la forme de deux couples respectivement formés d'un pion 42 et d'une butée 44, ces couples étant disposés transversalement de part et d'autre de la portion d'occultation.The positioning means 38 take the form of two pairs respectively formed of a pin 42 and a stop 44, these pairs being arranged transversely on either side of the occulting portion.

Le pion 42 présente une forme de portion de cône qui s'étend en saillie de la paroi de support pour recevoir par emmanchement les moyens d'émission de lumière percés d'un alésage de forme conique complémentaire. Le pion est ainsi apte à permettre le maintien en position dans deux directions, transversale et longitudinale, des moyens d'émission par rapport à la paroi de support et donc par rapport à la portion d'occultation.The pin 42 has a cone-shaped portion which protrudes from the support wall for receiving by fitting the light-emitting means pierced with a bore of complementary conical shape. The pin is thus able to maintain the position in two directions, transverse and longitudinal, of the transmission means relative to the support wall and therefore with respect to the occultation portion.

La butée 44 est disposée à proximité du pion et elle s'étend en saillie sur une hauteur moins importante que celle du pion, pour permettre aux moyens d'émission de venir reposer verticalement sur la face supérieure de la butée alors qu'ils coopèrent avec le pion voisin. La butée est ainsi apte à permettre la mise en position des moyens d'émission dans la troisième direction.The abutment 44 is disposed near the pin and extends projecting to a height less than that of the pin, to allow the transmission means to come to rest vertically on the upper face of the stop while they cooperate with the neighbor pawn. The stop is thus able to allow the positioning of the transmission means in the third direction.

Les moyens de fixation 40 prennent la forme de fûts, qui s'étendent sensiblement perpendiculairement en saillie de la paroi support. Ces fûts peuvent être venus de matière avec la paroi support ou bien être rapportés sur celle-ci. Ils sont aptes à coopérer avec des moyens de fixation complémentaires 46 qui sont portés par les radiateurs et qui sont visibles sur la figure 4.The fixing means 40 take the form of drums, which extend substantially perpendicularly projecting from the support wall. These drums can be integral with the support wall or be reported thereon. They are able to cooperate with complementary fixing means 46 which are carried by the radiators and which are visible on the figure 4 .

La portion d'occultation 30 joue le rôle d'un occulteur, formé directement dans la paroi support, et elle se distingue de la paroi support, outre par son décrochage vertical dans le mode de réalisation représenté, essentiellement par le profil particulier de son bord 48 qui est ondulé, par opposition au bord arrière droit 32 de la paroi support s'étendant transversalement de part et d'autre de la portion d'occultation.The occulting portion 30 acts as a concealer, formed directly in the support wall, and it is distinguished from the support wall, in addition to its vertical stall in the embodiment shown, essentially by the particular profile of its edge 48 which is corrugated, as opposed to the right rear edge 32 of the support wall extending transversely on either side of the occultation portion.

L'ondulation du profil du bord 48 de la portion d'occultation est différente selon chaque module et la forme des moyens de déviation optique. On comprend toutefois que le profil du bord 48 de la portion d'occultation présente avantageusement deux sections latérales 50 qui s'étendent sensiblement dans la continuité transversale du bord arrière de la paroi support et qui encadrent une section centrale 52 décalée longitudinalement vers l'intérieur de la paroi support.The ripple of the edge profile 48 of the occultation portion is different according to each module and the shape of the optical deflection means. It will be understood, however, that the profile of the edge 48 of the occultation portion advantageously has two lateral sections 50 which extend substantially in the transverse continuity of the rear edge of the support wall and which frame a central section 52 offset longitudinally inwards of the support wall.

On obtient cette forme particulière du profil par retrait de matière dans la partie centrale de la portion d'occultation, de manière à former transversalement deux zones latérales encadrant une zone centrale, de moindre dimension longitudinale. La jonction longitudinale 49 entre chaque zone latérale et la zone centrale peut être droite, ou sensiblement inclinée par rapport à la direction longitudinale comme cela est visible sur la figure 2.This particular shape of the profile is obtained by removing material in the central part of the occultation portion, so as to form transversely two lateral zones framing a central zone, of smaller longitudinal dimension. The longitudinal junction 49 between each lateral zone and the central zone may be straight, or substantially inclined relative to the longitudinal direction as is visible on the figure 2 .

La fonction des zones latérales de l'occulteur est de bloquer les rayons parasites qui ont tendance à se diriger vers les parois montantes du réflecteur, tandis que la fonction du dégagement longitudinal formé par la zone centrale est d'une part de laisser passage, dans la zone dégagée, aux rayons émis en direction de la surface de déviation optique, et d'autre part de bloquer par le bord 48 de l'occulteur les premiers rayons parasites dirigés vers la ligne de raccordement 54 entre le bord inférieur du collecteur et la paroi inférieure du cadre de support du réflecteur.The function of the lateral zones of the occluder is to block the parasitic rays which tend to move towards the rising walls of the reflector, while the function of the longitudinal clearance formed by the central zone is on the one hand to allow passage, in the zone released, with rays emitted in the direction of the optical deflection surface, and secondly to block by the edge 48 of the occulteur the first parasitic rays directed towards the connection line 54 between the lower edge of the collector and the bottom wall of the reflector support frame.

On comprend que l'ondulation du profil du bord 48 de la portion d'occultation est réalisée pour correspondre à la forme de cette ligne de raccordement 54. Dans l'exemple illustré, tel que cela est visible sur les figures 1 à 3, le profil du bord 48 dans la zone centrale est bombé, pour correspondre au retrait longitudinal 56 formé sensiblement au centre de la ligne de raccordement 54, visible sur la figure 3.It is understood that the corrugation of the profile of the edge 48 of the occultation portion is made to correspond to the shape of this connection line 54. In the illustrated example, as is visible on the Figures 1 to 3 , the profile of the edge 48 in the central zone is curved, to correspond to the longitudinal shrinkage 56 formed substantially in the center of the connecting line 54, visible on the figure 3 .

On va maintenant décrire comment obtenir et monter ensemble les différents éléments, décrits précédemment, du module lumineux selon l'invention, tel qu'il peut être visible sur la figure 4.We will now describe how to obtain and mount together the various elements, described above, the light module according to the invention, as it can be visible on the figure 4 .

Dans un premier temps, on réalise le réflecteur tel qu'il est visible seul sur la figure 1. Le cadre de support 14 et les moyens de déviation optique 12 sont solidaires, et le cadre de support porte les moyens de positionnement et les moyens de fixation venus de matière avec la paroi support 28, qui comporte en outre la portion d'occultation 30. On comprend que c'est donc à l'usinage de cette unique pièce que l'on peut avec précision s'assurer du respect des côtes entre les moyens de fixation et l'occulteur.In a first step, the reflector is made as visible only on the figure 1 . The support frame 14 and the optical deflection means 12 are integral, and the support frame carries the positioning means and the fastening means formed integrally with the support wall 28, which further comprises the occultation portion 30. It is understood that it is therefore to the machining of this single piece that we can accurately ensure the respect of the ribs between the fastening means and the occluder.

Les moyens d'échange thermiques sont montés sur le cadre de support, par la coopération des moyens de fixation 40 solidaires du cadre et des moyens complémentaires 46 portés par les moyens d'échange thermique. Ceux-ci recouvrent ainsi l'ouverture supérieure aménagée entre la paroi support et le bord supérieur du collecteur.The heat exchange means are mounted on the support frame, by the cooperation of the fastening means 40 integral with the frame and complementary means 46 carried by the heat exchange means. These cover the upper opening arranged between the support wall and the upper edge of the collector.

Les moyens d'émission de lumière sont montés sur les éléments modulaires interchangeables 10, et ceux-ci sont rendus solidaires du radiateur, dans une position telle que la diode 8 est disposée sensiblement au premier foyer du collecteur elliptique.The light-emitting means are mounted on the interchangeable modular elements 10, and these are made integral with the radiator, in a position such that the diode 8 is disposed substantially at the first focus of the elliptical collector.

On assure cette position par le montage de l'élément modulaire dans les moyens d'échange thermique et en faisant coopérer l'élément modulaire interchangeable, ou directement la plaque de circuits imprimés portée par cet élément modulaire, avec les moyens de positionnement. On pourra prévoir un montage glissant de l'élément modulaire dans les moyens d'échange thermiques pour prendre en compte un éventuel jeu de montage.This position is ensured by mounting the modular element in the heat exchange means and cooperating the interchangeable modular element, or directly the printed circuit board carried by this modular element, with the positioning means. It can be provided a sliding mounting of the modular element in the heat exchange means to take into account a possible mounting set.

Dans cette position, où la diode est disposée sensiblement au premier foyer du collecteur, la diode est apte à émettre un flux lumineux vers les moyens de déviation optique, avec la portion d'occultation qui est disposée en partie sur le trajet des rayons émis, entre la diode et les moyens de déviation optique.In this position, where the diode is disposed substantially at the first focus of the collector, the diode is able to emit a light flux towards the optical deflection means, with the occultation portion which is arranged partly on the path of the emitted rays, between the diode and the optical deflection means.

L'occulteur est ainsi disposé sur le trajet du flux lumineux, directement en sortie de la diode, avant toute réflexion de ces rayons et le bord de la portion d'occultation est correctement positionné pour trier les rayons parasites de ce flux, qui sont bloqués par la portion d'occultation, des rayons correctement dirigés vers les moyens de déviation optique, qui passent par le dégagement longitudinal formé par le découpage du bord de coupure.The occultor is thus disposed on the path of the luminous flux, directly at the output of the diode, before any reflection of these rays and the edge of the occultation portion is correctly positioned to sort the parasitic rays of this flow, which are blocked. by the occultation portion, rays correctly directed towards the optical deflection means, which pass through the longitudinal clearance formed by the cutting of the cutting edge.

La portion d'occultation présente un décrochage vertical tel que cela a pu être décrit précédemment, et l'on constate dans le module monté que ce décrochage est fait dans le sens de l'éloignement des moyens d'émission.The occultation portion has a vertical stall as can be described above, and it is found in the mounted module that this stall is made in the direction of the distance of the transmitting means.

Ainsi monté, le module lumineux peut être fixé sur la structure du véhicule pour former tout ou partie d'un projecteur de ce véhicule. Tel que cela est illustré sur les figures, le module est disposé de sorte que la paroi support s'étend horizontalement et de sorte que les parois latérales du cadre de support s'étendent sensiblement verticalement, mais on comprendra que l'orientation générale du module pourrait varier, sans sortir du contexte de l'invention, en fonction de l'application finale qui en est faite.Thus mounted, the light module can be attached to the vehicle structure to form all or part of a projector of the vehicle. As shown in the figures, the module is arranged so that the support wall extends horizontally and so that the side walls of the support frame extend substantially vertically, but it will be understood that the orientation general module could vary without departing from the context of the invention, depending on the final application that is made.

La description qui précède explique clairement comment l'invention permet d'atteindre les objectifs qu'elle s'est fixés et notamment de proposer un module lumineux qui contrôle, avec des moyens simples à réaliser, à monter et à faible coût de revient, la diffusion de lumière parasite vers des zones destinées à la réflexion de la lumière.The foregoing description clearly explains how the invention makes it possible to achieve the objectives that it has set itself and in particular to propose a light module which controls, with simple means to achieve, to mount and at low cost, the diffusing stray light to areas for light reflection.

Bien entendu, diverses modifications peuvent être apportées par l'homme du métier aux structures du module lumineux, qui viennent d'être décrites à titre d'exemples non limitatifs, dès lors que l'occulteur est venu de matière avec une paroi du cadre de support du réflecteur, et dès lors que l'occulteur est disposé entre les moyens d'émission de flux lumineux et les moyens de déviation optique d'un module lumineux.Of course, various modifications can be made by those skilled in the art to the structures of the light module, which have just been described by way of non-limiting examples, since the occulteur is integral with a wall of the frame. support of the reflector, and since the occulter is disposed between the light flux emitting means and the optical deflection means of a light module.

Claims (19)

  1. Light module intended to comprise means (2) for emitting a light flux towards a reflector (4) having optical means (12) for deflecting said flux to the output of said module,
    said reflector comprising a support wall (28) which is secured to the optical deflection means and which is arranged across said optical deflection means so as to be arranged between said optical deflection means and the emission means, said support wall comprising an occulting portion (36) which is arranged facing the emission means and of which one edge (48) is cut out so as to form an occulter materially produced with the support wall, capable of allowing passage only to a part of the rays emitted by the emission means.
  2. Light module according to Claim 1, characterized in that the reflector (4) and the support portion (28) are materially produced in a single piece.
  3. Light module according to Claim 1 or 2, characterized in that the occulting portion (36) is arranged transversely at the centre of the support wall (28).
  4. Light module according to one of the preceding claims, characterized in that the occulting portion (36) extends in a vertically offset plane, in the direction of distancing from the emission means (2), relative to the rest of the support wall (28).
  5. Light module according to Claim 4, characterized in that said direction of distancing corresponds to the global direction of emission of the emission means (2) of a light flux.
  6. Light module according to one of the preceding claims, in which the support wall (28) is arranged across said optical deflection means (12) so as to leave a passage between said optical deflection means and a rear edge (34) of the support wall, characterized in that said edge (48) of the occulting portion, which is wavy, extends at these transverse ends in the continuity of said rear edge of the support wall which is straight.
  7. Light module according to one of the preceding claims, characterized in that the reflector (4) comprises a support frame (14) of the optical deflection means (12) which comprises at least one wall (24, 26) delimiting these optical deflection means, and in that the edge (48) of the occulting portion (36) is cut out to correspond to a given position of this wall delimiting said optical deflection means.
  8. Light module according to Claim 7, characterized in that the edge (48) of said central section (52) has a wavy form.
  9. Light module according to Claim 7 or 8, characterized in that the walls delimiting said optical deflection means (12) comprise two walls (24), which delimit, laterally on either side, the optical deflection means and which are connected perpendicularly to the support wall (28), and a bottom wall (26) which is connected to the bottom edge (20) of the optical deflection means, opposite the support wall, and characterized in that the occulting portion has two lateral sections (50) in which the cut edge extends in the transverse continuity of the rear edge of the support wall and a central section (52) longitudinally offset inwards from the support wall.
  10. Light module according to Claim 9, characterized in that the edge (48) of said central section (52) has a wavy form, the wavy form of the edge (48) of said central section (52) is dependent on the form of the line of connection (54) of the bottom edge (20) of the optical deflection means (12) and of the bottom wall (26) of the support frame (14).
  11. Light module according to one of the preceding claims, characterized in that the support wall (28) bears positioning means (38) for the light emission means (2).
  12. Light module according to Claim 11, characterized in that the positioning means (38) are materially produced with the support wall (28).
  13. Light module according to Claim 11 or 12, characterized in that the positioning means (38) comprise a pin (42) extending protrudingly from the support wall (28) for the setting of the position of the light emission means (2) relative to the module according to two right-angled directions parallel to the plane of the support wall.
  14. Light module according to Claim 13, characterized in that the positioning means (38) further comprise an abutment (44) extending protrudingly from the support wall (28), for setting according to a third direction at right angles to the first two directions, the height of said abutment from the support wall being less than that of said pin.
  15. Light module according to one of Claims 11 to 14, characterized in that the support wall (28) bears fixing means (40) for a heat sink capable of covering the emission means (2) to ensure the thermal cooling thereof.
  16. Light module according to Claim 15, characterized in that the fixing means (40) are arranged at at least a transverse edge of the support wall (28) whereas the positioning means (38) are arranged in the vicinity of the occulting portion (30) or between the latter and the fixing means (40).
  17. Light module according to Claim 16, characterized in that it comprises light emission means (2).
  18. Light module according to Claim 17, characterized in that the light emission means (2) are supported directly or indirectly by the support wall (28), notably via a PCB, or for example via an element bearing the PCB.
  19. Motor vehicle headlight comprising two light modules according to one of Claims 1 to 18 and in which said two modules are arranged transversely side-by-side.
EP15159945.3A 2014-03-21 2015-03-19 Light module of a motor vehicle Active EP2921772B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1452364A FR3022010B1 (en) 2014-03-21 2014-03-21 LUMINOUS MODULE OF A MOTOR VEHICLE

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EP2921772A1 EP2921772A1 (en) 2015-09-23
EP2921772B1 true EP2921772B1 (en) 2019-02-27

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CN (1) CN104930430B (en)
FR (1) FR3022010B1 (en)

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Publication number Publication date
CN104930430B (en) 2019-11-19
EP2921772A1 (en) 2015-09-23
FR3022010B1 (en) 2019-04-05
US20150267886A1 (en) 2015-09-24
CN104930430A (en) 2015-09-23
US9671078B2 (en) 2017-06-06
FR3022010A1 (en) 2015-12-11

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