WO2016066929A1 - Semi-elliptical projector comprising a radiator - Google Patents

Semi-elliptical projector comprising a radiator Download PDF

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Publication number
WO2016066929A1
WO2016066929A1 PCT/FR2015/052833 FR2015052833W WO2016066929A1 WO 2016066929 A1 WO2016066929 A1 WO 2016066929A1 FR 2015052833 W FR2015052833 W FR 2015052833W WO 2016066929 A1 WO2016066929 A1 WO 2016066929A1
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WO
WIPO (PCT)
Prior art keywords
ellipsoid
radiator
reflector
projector
moving means
Prior art date
Application number
PCT/FR2015/052833
Other languages
French (fr)
Inventor
Hassan Koulouh
Cyril Rivier
Alexandre Aubry
Original Assignee
Aml Systems
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 Aml Systems filed Critical Aml Systems
Priority to CN201580057702.6A priority Critical patent/CN107002963B/en
Priority to EP15793880.4A priority patent/EP3212996B1/en
Publication of WO2016066929A1 publication Critical patent/WO2016066929A1/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
    • 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
    • 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
    • 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
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/332—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with continuity at the junction between adjacent areas
    • 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
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens

Definitions

  • the field of the present invention is that of automotive equipment and, more particularly, that of the light projectors for these motor vehicles.
  • Motor vehicle headlamps generally comprise a lens and a reflector in which a light source is disposed. It is known to use a cutoff bar allowing various phases of occultation of the light beam. The bar is then actuated electrically by a motor to move, on command, between at least two angular positions in which it more or less obscures the light beam. This makes it possible to limit the range of the headlamp, for example to that of the dipped headlamps, called the code position, so as not to dazzle the drivers traveling in the opposite direction, or to that of the high beam, called the road position, in which it There is no occultation. This technology is commonly used with projectors having a high power light source, such as halogen lamp or xenon projectors, for which the loss of light power due to the interception of the flow by the bar is not really detrimental .
  • a cutoff bar allowing various phases of occultation of the light beam.
  • the bar is then actuated electrically by a motor to move, on command
  • the heat released by the light source and the solar rays entering the optical module via the lens causes the heating of the internal environment of the optical module and therefore the engine.
  • This phenomenon of warming is defined in particular by a so-called environmental temperature.
  • the motor is caused to dissipate a lot of power in operation which causes a significant self-heating of the engine.
  • This phenomenon of self-heating is defined in particular by a so-called self-heating temperature.
  • the temperature reached by the engine that is to say the sum of the environment and self-heating temperatures, is important, which may damage the plastic housing on which the engine is mounted. It is known to overcome this disadvantage to install an electronic card with the engine in the optical module.
  • the electronic card in fact reduces the intensity of the current flowing through the motor and therefore its power and reduces the heat that it must dissipate.
  • such an installation is expensive and cumbersome.
  • the invention aims to remedy these drawbacks.
  • the subject of the invention is a motor vehicle headlamp comprising a light source, a moving means and a movable optical element configured to be driven by said moving means and arranged to cut and / or reflect a light beam emitted by the source, is remarkable in that it comprises a radiator thermally connected to said moving means.
  • the projector comprises a reflector, said light beam being reflected by the reflector before being cut and / or reflected by the movable optical element.
  • the light source comprises at least one light-emitting diode, called LED diode.
  • the radiator is configured to dissipate the heat generated by the LED or diodes. The invention thus makes it possible to use a single radiator to dissipate heat from the moving means and that from the light source.
  • said reflector has the shape of a half-ellipsoid portion extending above a plane of symmetry of said ellipsoid, said source being positioned on the axis of symmetry of the ellipsoid.
  • the radiator is positioned below the plane of symmetry of said ellipsoid.
  • the radiator is positioned upstream of the mobile optical element in the emission direction of said light beam.
  • said radiator is located at least partly inside said ellipsoid.
  • the radiator is located between a bottom of the reflector and said movable optical element.
  • said projector comprises an optical lens, said radiator being positioned at least partly in a volume defined by the cylindrical extension along an optical axis of the lens of a peripheral contour of the lens up to to a transverse plane passing through the bottom of the reflector.
  • the radiator is located, at least in part, within a volume defined by a second half-ellipsoid portion, symmetrical with the first half-ellipsoid portion and forming with it said portion of ellipsoid .
  • the moving means is located in the same area of the projector as the radiator. The invention thus makes it possible to improve the cooling of the moving means by virtue of the radiator while optimizing the size of the spotlight.
  • the moving means is located upstream of the mobile optical element in the direction of emission of said light beam.
  • the moving means is thus protected from sunlight penetrating the projector through the lens.
  • said moving means is located below the plane of symmetry of said ellipsoid. According to one aspect of the invention, said moving means is located at least partly inside said ellipsoid.
  • said moving means is located below said light source.
  • the moving means is located between a bottom of the reflector and said movable optical element.
  • said projector comprises an optical lens, said moving means being positioned at least partly in a volume defined by the extension of a peripheral contour of the lens to a bottom of the reflector parallel to an optical axis of The lens.
  • FIG. 1 is a schematic view of a semi-elliptical headlight according to one embodiment of the invention, in the high beam position,
  • FIG. 2 is a schematic view of the headlight of FIG. 2, in the dipped beam position, and
  • FIGS. 1 and 2 there is shown a half-elliptical headlamp 1 of a motor vehicle comprising a reflector 12 having the shape of a first half-ellipsoid portion extending above a plane of symmetry of the vehicle. 'ellipsoid.
  • the projector also comprises a light source S comprising a light-emitting diode, called LED diode, positioned inside the reflector.
  • the light source here comprises a plurality of LEDs.
  • a second half-ellipsoid portion 15 forming an ellipsoid portion with the first half-ellipsoid portion 14 is shown in dotted lines for purposes of understanding but does not represent a real physical element of the half-elliptical projector.
  • the second half-ellipsoid portion 15 is symmetrical with respect to the first half-ellipsoid portion 14 along the plane of symmetry of the ellipsoid.
  • the first half-ellipsoid portion is axially limited by a plane M perpendicular to the axis of symmetry of the ellipsoid and intersecting the ellipsoid.
  • the light source S is positioned on an axis of symmetry X of the ellipsoid portion, at a first focus of the first half-ellipsoid portion, on the bottom side of the reflector 12, the light source emitting only on a solid angle of 2 ⁇ steradians, or in section along a vertical plane passing through the optical axis, as shown in the figure, on a sector of 180 ° directed upwards.
  • This configuration is particularly well suited to a light source formed by LED light emitting diodes, which emit only on a solid angle of 2 ⁇ steradians.
  • the axis of symmetry X of the ellipsoid is a longitudinal axis of symmetry of the ellipsoid.
  • the plane of symmetry of the ellipsoid contains the axis of symmetry X of the ellipsoid.
  • the luminous flux is directed, after reflection on the reflector 12 towards the second focus F of the ellipsoid and then towards a convergent lens 3 of the projector 1 located downstream of the reflector in the direction of emission of the luminous flux and whose purpose is to project the luminous flux on the road. Due to this emission on 2 ⁇ steradians the light beam is directed only towards the lower half of the lens 3.
  • a mobile optical element 4 arranged to cut and / or reflect the light beam emitted by the source and reflected by the reflector is positioned at the second focus F. This is a mirror 4. In another embodiment of the invention not shown, it could be a cutoff bar.
  • the reflecting surface of the mirror 4 is directed upwards so as to be able to intercept the luminous flux coming from the reflector 12.
  • This mirror 4 is mobile about a horizontal axis so as to position its reflective surface, ie in a horizontal plane passing by or parallel to the axis of symmetry of the ellipsoid X, or, in a plane inclined forward, in a so-called retracted position.
  • the mirror 4 is inclined relative to the horizontal plane and is positioned outside the luminous flux, thus passing all the rays in the direction of the lens 3. These traverse the lower part of the lens and are straightened upwards to illuminate the road for a long distance. We thus find our in road position without loss of the light power emitted by the source S.
  • the mirror 4 is in a horizontal position and its longitudinal span is sufficient to intercept all the rays coming from the reflector 12. All these rays are reflected upwards by the mirror 4 and are redirected by the mirror towards the upper part of the lens 3. At the exit of the lens the light rays are sent forward, but with a inflection down, which illuminates the road over a given distance. We then find us in a code position, this time again, without losing the luminous power emitted by the source S.
  • the shape of the beam to meet the requirements of European code standards is given either by a particular shape of the lens 3 either by an axial shift of the focus of the lens relative to the second focus F of the ellipsoid, or finally by a combination of both.
  • the light source S remains on, the beam it emits being directed either substantially horizontally in the high beam position, or directed downwards in the fire position. crossing.
  • the operation of the light source is thus improved, in particular when it is carried out by LEDs, since it does not pass through successive phases of ignition and extinguishing.
  • the projector 1 comprises at least one moving means 20 configured to make the movable optical element 4 mobile.
  • the moving means 20 is, for example, an actuator, a solenoid, a coil or, as here, an electric motor. It comprises here a motor shaft at the end of which is positioned a pinion 21 which rotates the movable optical element 4 via a toothed sector 22.
  • the projector 1 comprises a radiator 30 configured to dissipate the heat from the moving means 20.
  • the radiator comprises fins 31.
  • the fins 31 extend parallel to each other and perpendicular to the axis of symmetry X of the ellipsoid.
  • the radiator 30 is in contact with a frame of the moving means. It is designed to increase the exchange surface with air.
  • the radiator allows the electric motor to admit in its turns a current density of up to 6 A / mm 2 and to dissipate this current in an environment of 130 ° to 160 ° C without exceeding the critical temperature of the turns, which is around 220 ° C. .
  • the radiator is located closest to the light source S and in particular upstream of the mobile optical element 4 in the direction 40 of emission of the light beam.
  • the direction 40 of emission of the light beam is the direction by which it leaves the projector for the purpose of being projected on the road.
  • upstream means that the radiator is located upstream of a plane P perpendicular to the axis of symmetry X of the ellipsoid, the plane P itself being located upstream of the mobile optical element 4 .
  • the radiator 30 is located below the plane of symmetry of the ellipsoid, for example at least partly inside the second half-ellipsoid portion shown in dotted line, that is to say inside the the ellipsoid portion.
  • the radiator 30 is positioned at least partly in a cylindrical volume V resting along the optical axis of the lens 3, on the peripheral contour 18 of the lens 3, and extending as far as the bottom 13 of the reflector 12 as illustrated in FIGS. 1 and 2.
  • the peripheral contour 18 of the lens 3 is, in particular circular.
  • the moving means 20 is advantageously located in the same area of the projector as the radiator 30.
  • the moving means 20 is for example located upstream of the movable optical element 4 in the direction 40 of emission of the light beam.
  • the moving means 20 is situated below the plane of symmetry of the ellipsoid, for example at least partly inside the second half-ellipsoid portion represented in dotted line, that is to say at inside the ellipsoid portion.
  • the invention thus makes it possible to improve the cooling of the moving means while optimizing the size of the projector.
  • the light source emits a light beam only towards the first half-ellipsoid portion, the majority of the heat released by the light source is not directed towards the moving means.
  • the moving means 20 being cooled by means of the radiator 30, it is thus possible to position the moving means 20 as close as possible to the light source, without the risk of it becoming too heated, and thus to improve the the size of the projector.
  • the moving means 20 can therefore be located below said light source S, that is to say that it passes through a plane O perpendicular to the axis of symmetry X of the passing portion of ellipsoid. by the light source S.
  • the moving means 20 is positioned at least partly in said volume V.
  • the projector of the invention may also include several half-elliptical reflectors 12 as shown in Figure 3. These reflectors 12 are for example positioned next to each other. Positioning the moving means 20 upstream of the mobile optical element 4 is all the more advantageous in this embodiment because it allows the lens (s) 3 to be brought closer to each of the reflectors without being disturbed by the presence of the moving means.
  • the projector comprises a single means of movement 20 for all the reflectors 12, arranged to make the moving optical elements 4 of each reflector mobile.
  • the projector comprises, for example, a support 19 on which the moving means 20 is mounted.
  • the assembly can be done by snapping with a metal or plastic flange, welding, screwing to any other means of rigid assembly.
  • the invention has been described with a combination of a plane mirror 4 and a lens 3 which reverses the light rays and gives the desired shape to the beam. It could equally well be achieved by a single beam reversal member, such as a mirror having a complex shape that returns the light beam forward giving it the desired shape.
  • the transition from the high beam configuration to the low beam is, in this case, provided by a displacement of the complex shape mirror, which is thus movable as is the plane mirror of the configuration described.

Abstract

The projector (1) comprises a light source (S), a movement means (20), a moving optical element (4) driven by the movement means (20) to cut and/or reflect a light beam emitted by the source (S), a radiator (30) thermally linked to the movement means (20), and a reflector (12), the light beam being reflected by the reflector (12) before being cut and/or reflected by the moving optical element (4), the reflector (12) having the shape of a portion of a semi-ellipsoid, the source (S) being positioned on the axis of symmetry (X) of the ellipsoid, the radiator (30) being positioned below the plane of symmetry of said ellipsoid, the radiator (30) being situated at least partially inside said ellipsoid between a base (13) of the reflector (12) and the moving optical element (4), and being positioned at least partially within a volume (V) defined by the cylindrical extension, along an optical axis of an optical lens (3), of a peripheral contour of said lens (3) to a transverse plane passing through a base (13) of the reflector (12).

Description

PROJECTEUR SEMI-ELLIPTIQUE COMPRENANT UN RADIATEUR  SEMI-ELLIPTICAL PROJECTOR COMPRISING A RADIATOR
Le domaine de la présente invention est celui des équipements pour automobile et, plus particulièrement, celui des projecteurs de lumière pour ces véhicules automobiles. The field of the present invention is that of automotive equipment and, more particularly, that of the light projectors for these motor vehicles.
Les projecteurs de véhicule automobile comprennent généralement une lentille et un réflecteur dans lequel est disposée une source lumineuse. Il est connu d'utiliser une barrette de coupure permettant diverses phases d'occultation du faisceau lumineux. La barrette est alors actionnée électriquement par un moteur pour se déplacer, sur commande, entre au moins deux positions angulaires dans lesquelles elle occulte plus ou moins le faisceau lumineux. Ceci permet de limiter la portée du projecteur, par exemple à celle des feux de croisement, dite position code, pour ne pas éblouir les conducteurs circulant en sens inverse, ou encore à celle des feux de route, dite position route, dans laquelle il n'y a pas d'occultation. Cette technologie est couramment utilisée avec des projecteurs comportant une source lumineuse de forte puissance, tels que des projecteurs à lampe halogène ou au xénon, pour lesquels la perte de puissance lumineuse due à l'interception du flux par la barrette n'est pas réellement préjudiciable. Motor vehicle headlamps generally comprise a lens and a reflector in which a light source is disposed. It is known to use a cutoff bar allowing various phases of occultation of the light beam. The bar is then actuated electrically by a motor to move, on command, between at least two angular positions in which it more or less obscures the light beam. This makes it possible to limit the range of the headlamp, for example to that of the dipped headlamps, called the code position, so as not to dazzle the drivers traveling in the opposite direction, or to that of the high beam, called the road position, in which it There is no occultation. This technology is commonly used with projectors having a high power light source, such as halogen lamp or xenon projectors, for which the loss of light power due to the interception of the flow by the bar is not really detrimental .
La chaleur dégagée par la source lumineuse et par les rayons solaires qui entrent dans le module optique par l'intermédiaire de la lentille entraîne le réchauffement de l'environnement intérieur du module optique et donc du moteur. Ce phénomène de réchauffement est notamment défini par une température dite d'environnement. The heat released by the light source and the solar rays entering the optical module via the lens causes the heating of the internal environment of the optical module and therefore the engine. This phenomenon of warming is defined in particular by a so-called environmental temperature.
Le moteur est amené à dissiper beaucoup de puissance en fonctionnement ce qui entraîne un auto-échauffement du moteur important. Ce phénomène d'auto- échauffement est notamment défini par une température dite d'auto-échauffement. La température atteinte par le moteur, c'est-à-dire la somme des températures d'environnement et d'auto-échauffement, est donc importante, ce qui risque d'endommager le boîtier en matière plastique sur lequel le moteur est monté. Il est connu, pour remédier à cet inconvénient d'installer une carte électronique avec le moteur dans le module optique. La carte électronique réduit en effet l'intensité du courant qui traverse le moteur et donc sa puissance et réduit la chaleur qu'il doit dissiper. Cependant, une telle installation est coûteuse et encombrante. The motor is caused to dissipate a lot of power in operation which causes a significant self-heating of the engine. This phenomenon of self-heating is defined in particular by a so-called self-heating temperature. The temperature reached by the engine, that is to say the sum of the environment and self-heating temperatures, is important, which may damage the plastic housing on which the engine is mounted. It is known to overcome this disadvantage to install an electronic card with the engine in the optical module. The electronic card in fact reduces the intensity of the current flowing through the motor and therefore its power and reduces the heat that it must dissipate. However, such an installation is expensive and cumbersome.
Une autre solution connu consiste à choisir le boîtier en métal, de part sa résistance aux fortes températures, mais ce matériau présente l'inconvénient d'être lourd et coûteux. Another known solution is to choose the metal housing because of its resistance to high temperatures, but this material has the disadvantage of being heavy and expensive.
L'invention vise à remédier à ces inconvénients. The invention aims to remedy these drawbacks.
A cet effet, l'invention a pour objet un projecteur pour véhicule automobile comportant une source lumineuse, un moyen de mise en mouvement et un élément optique mobile configuré pour être entraîné par ledit moyen de mise en mouvement et agencé pour couper et/ou réfléchir un faisceau lumineux émis par la source, est remarquable en ce qu'il comporte un radiateur relié thermiquement audit moyen de mise en mouvement. For this purpose, the subject of the invention is a motor vehicle headlamp comprising a light source, a moving means and a movable optical element configured to be driven by said moving means and arranged to cut and / or reflect a light beam emitted by the source, is remarkable in that it comprises a radiator thermally connected to said moving means.
Ainsi, grâce au radiateur, on optimise la diffusion de la chaleur du moyen de mise en mouvement et on peut se passer à la fois d'une carte électronique et d'un boîtier en métal coûteux. Selon un aspect de l'invention, le projecteur comprend un réflecteur, ledit faisceau lumineux étant réfléchi par le réflecteur avant d'être coupé et/ou réfléchi par l'élément optique mobile. Thus, thanks to the radiator, the heat diffusion of the moving means is optimized and an electronic card and an expensive metal case can be dispensed with. According to one aspect of the invention, the projector comprises a reflector, said light beam being reflected by the reflector before being cut and / or reflected by the movable optical element.
Selon un exemple de réalisation de l'invention, la source lumineuse comprend au moins une diode électroluminescente, dite diode LED. Selon un aspect de l'invention, le radiateur est configuré pour dissiper la chaleur générée par la ou les diodes LED. L'invention permet ainsi d'utiliser un unique radiateur pour dissiper la chaleur issue du moyen de mise en mouvement et celle issue de la source lumineuse. According to an exemplary embodiment of the invention, the light source comprises at least one light-emitting diode, called LED diode. According to one aspect of the invention, the radiator is configured to dissipate the heat generated by the LED or diodes. The invention thus makes it possible to use a single radiator to dissipate heat from the moving means and that from the light source.
Avantageusement, ledit réflecteur a la forme d'une portion de demi- ellipsoïde s'étendant au dessus d'un plan de symétrie dudit ellipsoïde, ladite source étant positionnée sur l'axe de symétrie de l'ellipsoïde. Selon un mode de réalisation, le radiateur est positionné en dessous du plan de symétrie dudit ellipsoïde. Advantageously, said reflector has the shape of a half-ellipsoid portion extending above a plane of symmetry of said ellipsoid, said source being positioned on the axis of symmetry of the ellipsoid. According to one embodiment, the radiator is positioned below the plane of symmetry of said ellipsoid.
Selon un exemple de réalisation de l'invention, le radiateur est positionné en amont de l'élément optique mobile dans le sens d'émission dudit faisceau lumineux. According to an exemplary embodiment of the invention, the radiator is positioned upstream of the mobile optical element in the emission direction of said light beam.
Avantageusement, ledit le radiateur est situé au moins en partie à l'intérieur dudit ellipsoïde. Selon un mode de réalisation de l'invention, le radiateur est situé entre un fond du réflecteur et ledit élément optique mobile. Advantageously, said radiator is located at least partly inside said ellipsoid. According to one embodiment of the invention, the radiator is located between a bottom of the reflector and said movable optical element.
Selon un exemple de réalisation de l'invention, ledit projecteur comprend une lentille optique, ledit radiateur étant positionné au moins en partie dans un volume défini par l'extension cylindrique selon un axe optique de la lentille d'un contour périphérique de la lentille jusqu'à un plan transversal passant par le fond du réflecteur. On comprend ici que le radiateur est situé, au moins en partie, à l'intérieur d'un volume défini par une deuxième portion de demi-ellipsoïde, symétrique de la première portion de demi-ellipsoïde et formant avec elle ladite portion d'ellipsoïde. Ainsi, en plus d'améliorer la diffusion de la chaleur, l'invention permet de positionner le radiateur de telle sorte que le projecteur de l'invention ne prend pas plus de place qu'un projecteur elliptique dépourvu de radiateur. Selon un aspect de l'invention, le moyen de mise en mouvement est situé dans la même zone du projecteur que le radiateur. L'invention permet ainsi d'améliorer le refroidissement du moyen de mise en mouvement grâce au radiateur tout en optimisant l'encombrement du projecteur. According to an exemplary embodiment of the invention, said projector comprises an optical lens, said radiator being positioned at least partly in a volume defined by the cylindrical extension along an optical axis of the lens of a peripheral contour of the lens up to to a transverse plane passing through the bottom of the reflector. Here it is understood that the radiator is located, at least in part, within a volume defined by a second half-ellipsoid portion, symmetrical with the first half-ellipsoid portion and forming with it said portion of ellipsoid . Thus, in addition to improving the diffusion of heat, the invention makes it possible to position the radiator so that the projector of the invention does not take up more space than an elliptical projector without a radiator. According to one aspect of the invention, the moving means is located in the same area of the projector as the radiator. The invention thus makes it possible to improve the cooling of the moving means by virtue of the radiator while optimizing the size of the spotlight.
Avantageusement, le moyen de mise en mouvement est situé en amont de l'élément optique mobile dans le sens d'émission dudit faisceau lumineux. Le moyen de mise en mouvement est donc protégé des rayons du soleil pénétrant dans le projecteur par la lentille. Advantageously, the moving means is located upstream of the mobile optical element in the direction of emission of said light beam. The moving means is thus protected from sunlight penetrating the projector through the lens.
Selon un mode de réalisation de l'invention, ledit moyen de mise en mouvement est situé en dessous du plan de symétrie dudit ellipsoïde. Selon un aspect de l'invention, ledit moyen de mise en mouvement est situé au moins en partie à l'intérieur dudit ellipsoïde. According to one embodiment of the invention, said moving means is located below the plane of symmetry of said ellipsoid. According to one aspect of the invention, said moving means is located at least partly inside said ellipsoid.
Selon un exemple de réalisation de l'invention, ledit moyen de mise en mouvement est situé en dessous de ladite source lumineuse. According to an exemplary embodiment of the invention, said moving means is located below said light source.
Selon un aspect de l'invention, le moyen de mise en mouvement est situé entre un fond du réflecteur et ledit élément optique mobile. According to one aspect of the invention, the moving means is located between a bottom of the reflector and said movable optical element.
Avantageusement, ledit projecteur comprend une lentille optique, ledit moyen de mise en mouvement étant positionné au moins en partie dans un volume défini par l'extension d'un contour périphérique de la lentille jusqu'à un fond du réflecteur parallèlement à un axe optique de la lentille. Advantageously, said projector comprises an optical lens, said moving means being positioned at least partly in a volume defined by the extension of a peripheral contour of the lens to a bottom of the reflector parallel to an optical axis of The lens.
L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés. Sur ces dessins : The invention will be better understood, and other objects, details, features and advantages thereof will appear more clearly in the following detailed explanatory description of an embodiment of the invention given to As a purely illustrative and non-limiting example, with reference to the accompanying schematic drawings. On these drawings:
- la figure 1 est une vue schématique d'un projecteur semi-elliptique selon un mode de réalisation de l'invention, en position de feux de route,  FIG. 1 is a schematic view of a semi-elliptical headlight according to one embodiment of the invention, in the high beam position,
- la figure 2 est une vue schématique du projecteur de la figure 2, en position de feux de croisement, et FIG. 2 is a schematic view of the headlight of FIG. 2, in the dipped beam position, and
- la figure 3 est une vue de face d'un exemple de réalisation du projecteur de l'invention. En se référant aux figures 1 et 2, on voit un projecteur demi-elliptique 1 de véhicule automobile comprenant un réflecteur 12, ayant la forme d'une première portion de demi-ellipsoïde s'étendant au dessus d'un plan de symétrie de l'ellipsoïde. Le projecteur comprend également une source lumineuse S comprenant une diode électroluminescente, dite diode LED, positionnée à l'intérieur du réflecteur. La source lumineuse comprend ici une pluralité de diodes LED. Une deuxième portion de demi-ellipsoïde 15 formant une portion d'ellipsoïde avec la première portion de demi-ellipsoïde 14 est représentée en pointillés à des fins de compréhension mais ne représente pas un élément physique réel du projecteur demi-elliptique. La deuxième portion de demi-ellipsoïde 15 est symétrique par rapport à la première portion de demi-ellipsoïde 14 selon le plan de symétrie de l'ellipsoïde. La première portion de demi-ellipsoïde est limitée axialement par un plan M perpendiculaire à l'axe de symétrie de l'ellipsoïde et coupant l'ellipsoïde. La source lumineuse S est positionnée sur un axe de symétrie X de la portion d'ellipsoïde, au niveau d'un premier foyer de la première portion de demi- ellipsoïde, du côté du fond du réflecteur 12, la source lumineuse n'émettant que sur un angle solide de 2π stéradians, soit, en coupe selon un plan vertical passant par l'axe optique, comme cela apparaît sur la figure, sur un secteur de 180° dirigé vers le haut. Cette configuration est particulièrement bien adaptée à une source lumineuse formée par des diodes électroluminescentes LED, qui n'émettent que sur un angle solide de 2π stéradians. L'axe de symétrie X de l'ellipsoïde est un axe de symétrie longitudinal de l'ellipsoïde. Le plan de symétrie de l'ellipsoïde contient l'axe de symétrie X de l'ellipsoïde. - Figure 3 is a front view of an embodiment of the projector of the invention. Referring to FIGS. 1 and 2, there is shown a half-elliptical headlamp 1 of a motor vehicle comprising a reflector 12 having the shape of a first half-ellipsoid portion extending above a plane of symmetry of the vehicle. 'ellipsoid. The projector also comprises a light source S comprising a light-emitting diode, called LED diode, positioned inside the reflector. The light source here comprises a plurality of LEDs. A second half-ellipsoid portion 15 forming an ellipsoid portion with the first half-ellipsoid portion 14 is shown in dotted lines for purposes of understanding but does not represent a real physical element of the half-elliptical projector. The second half-ellipsoid portion 15 is symmetrical with respect to the first half-ellipsoid portion 14 along the plane of symmetry of the ellipsoid. The first half-ellipsoid portion is axially limited by a plane M perpendicular to the axis of symmetry of the ellipsoid and intersecting the ellipsoid. The light source S is positioned on an axis of symmetry X of the ellipsoid portion, at a first focus of the first half-ellipsoid portion, on the bottom side of the reflector 12, the light source emitting only on a solid angle of 2π steradians, or in section along a vertical plane passing through the optical axis, as shown in the figure, on a sector of 180 ° directed upwards. This configuration is particularly well suited to a light source formed by LED light emitting diodes, which emit only on a solid angle of 2π steradians. The axis of symmetry X of the ellipsoid is a longitudinal axis of symmetry of the ellipsoid. The plane of symmetry of the ellipsoid contains the axis of symmetry X of the ellipsoid.
Le flux lumineux se dirige, après réflexion sur le réflecteur 12 vers le second foyer F de l'ellipsoïde puis vers une lentille convergente 3 du projecteur 1 située en aval du réflecteur dans le sens d'émission du flux lumineux et dont le but est de projeter le flux lumineux sur la route. Du fait de cette émission sur 2π stéradians le faisceau lumineux ne se dirige que vers la moitié inférieure de la lentille 3. Comme cela est visible sur les figures 1 et 2, un élément optique mobile 4 agencé pour couper et/ou réfléchir le faisceau lumineux émis par la source et réfléchi par le réflecteur est positionné au niveau du second foyer F. Il s'agit ici d'un miroir 4. Dans un autre mode de réalisation de l'invention non représenté, il pourrait s'agir d'une barrette de coupure. La surface réfléchissante du miroir 4 est dirigée vers le haut de façon à pouvoir intercepter le flux lumineux en provenance du réflecteur 12. Ce miroir 4 est mobile autour d'un axe horizontal de façon à positionner sa surface réfléchissante, soit dans un plan horizontal passant par ou parallèle à l'axe de symétrie de l'ellipsoïde X, soit, dans un plan incliné vers l'avant, dans une position dite escamotée. The luminous flux is directed, after reflection on the reflector 12 towards the second focus F of the ellipsoid and then towards a convergent lens 3 of the projector 1 located downstream of the reflector in the direction of emission of the luminous flux and whose purpose is to project the luminous flux on the road. Due to this emission on 2π steradians the light beam is directed only towards the lower half of the lens 3. As can be seen in FIGS. 1 and 2, a mobile optical element 4 arranged to cut and / or reflect the light beam emitted by the source and reflected by the reflector is positioned at the second focus F. This is a mirror 4. In another embodiment of the invention not shown, it could be a cutoff bar. The reflecting surface of the mirror 4 is directed upwards so as to be able to intercept the luminous flux coming from the reflector 12. This mirror 4 is mobile about a horizontal axis so as to position its reflective surface, ie in a horizontal plane passing by or parallel to the axis of symmetry of the ellipsoid X, or, in a plane inclined forward, in a so-called retracted position.
Sur la figure 1 , le miroir 4 est incliné par rapport au plan horizontal et est positionné en dehors du flux lumineux, laissant ainsi passer tous les rayons en direction de la lentille 3. Ceux-ci traversent la partie basse de la lentille et sont redressés vers le haut pour éclairer la route sur une grande distance. On se retrouve ainsi en position route sans perte de la puissance lumineuse émise par la source S. In FIG. 1, the mirror 4 is inclined relative to the horizontal plane and is positioned outside the luminous flux, thus passing all the rays in the direction of the lens 3. These traverse the lower part of the lens and are straightened upwards to illuminate the road for a long distance. We thus find ourselves in road position without loss of the light power emitted by the source S.
En revanche, sur la figure 2, le miroir 4 est dans une position horizontale et son envergure longitudinale est suffisante pour intercepter tous les rayons en provenance du réflecteur 12. Tous ces rayons sont réfléchis vers le haut par le miroir 4 et sont redirigés par celui-ci vers la partie haute de la lentille 3. En sortie de la lentille les rayons lumineux sont renvoyés vers l'avant, mais avec une inflexion vers le bas, ce qui permet d'éclairer la route sur une distance donnée. On se retrouve alors dans une position de code, cette fois encore, sans perdre de la puissance lumineuse émise par la source S. La forme du faisceau pour répondre aux exigences des normes de code européen est donnée soit par une forme particulière de la lentille 3, soit par un décalage axial du foyer de la lentille par rapport au second foyer F de l'ellipsoïde, soit enfin par une combinaison des deux. De façon pratique on remarque que quelle que soit la position donnée au miroir 4 la source lumineuse S reste allumée, le faisceau qu'elle émet étant dirigée soit sensiblement horizontalement en position de feux de route, soit dirigée vers le bas en position de feux de croisement. Le fonctionnement de la source lumineuse est ainsi amélioré, en particulier lorsqu'elle est réalisée par des diodes électroluminescentes LED, puisqu'elle ne passe pas par des phases successives d'allumage et d'extinction. On the other hand, in FIG. 2, the mirror 4 is in a horizontal position and its longitudinal span is sufficient to intercept all the rays coming from the reflector 12. All these rays are reflected upwards by the mirror 4 and are redirected by the mirror towards the upper part of the lens 3. At the exit of the lens the light rays are sent forward, but with a inflection down, which illuminates the road over a given distance. We then find ourselves in a code position, this time again, without losing the luminous power emitted by the source S. The shape of the beam to meet the requirements of European code standards is given either by a particular shape of the lens 3 either by an axial shift of the focus of the lens relative to the second focus F of the ellipsoid, or finally by a combination of both. Practically, it should be noted that, whatever the position given to the mirror 4, the light source S remains on, the beam it emits being directed either substantially horizontally in the high beam position, or directed downwards in the fire position. crossing. The operation of the light source is thus improved, in particular when it is carried out by LEDs, since it does not pass through successive phases of ignition and extinguishing.
Le projecteur 1 comprend au moins un moyen de mise en mouvement 20 configuré pour rendre mobile l'élément optique mobile 4. Le moyen de mise en mouvement 20 est par exemple un actionneur, un solénoïde, une bobine ou comme ici un moteur électrique. Il comprend ici un arbre moteur au bout duquel est positionné un pignon 21 qui entraîne en rotation l'élément optique mobile 4 par l'intermédiaire d'un secteur dentée 22. Selon l'invention, le projecteur 1 comprend un radiateur 30 configuré pour dissiper la chaleur issue du moyen de mise en mouvement 20. The projector 1 comprises at least one moving means 20 configured to make the movable optical element 4 mobile. The moving means 20 is, for example, an actuator, a solenoid, a coil or, as here, an electric motor. It comprises here a motor shaft at the end of which is positioned a pinion 21 which rotates the movable optical element 4 via a toothed sector 22. According to the invention, the projector 1 comprises a radiator 30 configured to dissipate the heat from the moving means 20.
Comme illustré sur la figure 3, le radiateur comprend des ailettes 31. Les ailettes 31 s'étendent parallèlement entre elles et perpendiculairement par rapport à l'axe de symétrie X de l'ellipsoïde. Le radiateur 30 est en contact avec une armature du moyen de mise en mouvement. Il est conçu de manière à augmenter la surface d'échange avec l'air. Le radiateur permet au moteur électrique d'admettre dans ses spires une densité de courant allant jusqu'à 6 A/mm2 et de dissiper ce courant dans un environnement de 130° à 160°C sans dépasser la température critique des spires, qui se situe autour de 220°C. Le radiateur est situé au plus proche de la source lumineuse S et notamment en amont de l'élément optique mobile 4 dans le sens 40 d'émission du faisceau lumineux. Le sens 40 d'émission du faisceau lumineux est le sens par lequel il sort du projecteur dans le but d'être projeté sur la route. On entend par « en amont » le fait que le radiateur est situé en amont d'un plan P perpendiculaire à l'axe de symétrie X de l'ellipsoïde, le plan P étant lui même situé en amont de l'élément optique mobile 4. As illustrated in Figure 3, the radiator comprises fins 31. The fins 31 extend parallel to each other and perpendicular to the axis of symmetry X of the ellipsoid. The radiator 30 is in contact with a frame of the moving means. It is designed to increase the exchange surface with air. The radiator allows the electric motor to admit in its turns a current density of up to 6 A / mm 2 and to dissipate this current in an environment of 130 ° to 160 ° C without exceeding the critical temperature of the turns, which is around 220 ° C. . The radiator is located closest to the light source S and in particular upstream of the mobile optical element 4 in the direction 40 of emission of the light beam. The direction 40 of emission of the light beam is the direction by which it leaves the projector for the purpose of being projected on the road. The term "upstream" means that the radiator is located upstream of a plane P perpendicular to the axis of symmetry X of the ellipsoid, the plane P itself being located upstream of the mobile optical element 4 .
Le radiateur 30 est situé en dessous du plan de symétrie de l'ellipsoïde, par exemple au moins en partie à l'intérieur de la deuxième portion de demi-ellipsoïde représenté en pointillé, c'est-à-dire à l'intérieur de la portion d'ellipsoïde. The radiator 30 is located below the plane of symmetry of the ellipsoid, for example at least partly inside the second half-ellipsoid portion shown in dotted line, that is to say inside the the ellipsoid portion.
Le radiateur 30 est positionné au moins en partie dans un volume cylindrique V s'appuyant selon l'axe optique de la lentille 3, sur le contour périphérique 18 de la lentille 3, et s'étendant jusqu'au fond 13 du réflecteur 12 comme illustré sur les figures 1 et 2. Le contour périphérique 18 de la lentille 3 est, notamment circulaire. The radiator 30 is positioned at least partly in a cylindrical volume V resting along the optical axis of the lens 3, on the peripheral contour 18 of the lens 3, and extending as far as the bottom 13 of the reflector 12 as illustrated in FIGS. 1 and 2. The peripheral contour 18 of the lens 3 is, in particular circular.
Le moyen de mise en mouvement 20 est avantageusement situé dans la même zone du projecteur que le radiateur 30. The moving means 20 is advantageously located in the same area of the projector as the radiator 30.
Le moyen de mise en mouvement 20 est par exemple situé en amont de l'élément optique mobile 4 dans le sens 40 d'émission du faisceau lumineux. The moving means 20 is for example located upstream of the movable optical element 4 in the direction 40 of emission of the light beam.
Le moyen de mise en mouvement 20 est situé en dessous du plan de symétrie de l'ellipsoïde, par exemple au moins en partie à l'intérieur de la deuxième portion de demi-ellipsoïde représenté en pointillé, c'est-à-dire à l'intérieur de la portion d'ellipsoïde. L'invention permet ainsi d'améliorer le refroidissement du moyen de mise en mouvement tout en optimisant l'encombrement du projecteur. En outre, la source lumineuse émettant un faisceau lumineux uniquement vers la première portion de demi-ellipsoïde, la majorité de la chaleur dégagée par la source lumineuse n'est pas dirigée vers le moyen de mise en mouvement. The moving means 20 is situated below the plane of symmetry of the ellipsoid, for example at least partly inside the second half-ellipsoid portion represented in dotted line, that is to say at inside the ellipsoid portion. The invention thus makes it possible to improve the cooling of the moving means while optimizing the size of the projector. In addition, since the light source emits a light beam only towards the first half-ellipsoid portion, the majority of the heat released by the light source is not directed towards the moving means.
Le moyen de mise en mouvement 20 étant refroidi grâce au radiateur 30 il est ainsi possible de positionner le moyen de mise en mouvement 20 au plus proche de la source lumineuse, sans risquer qu'il ne s'échauffe trop, et ainsi améliorer l'encombrement du projecteur. Le moyen de mise en mouvement 20 peut donc être situé en dessous de ladite source lumineuse S, c'est-à-dire qu'il est traversé par un plan O perpendiculaire à l'axe de symétrie X de la portion d'ellipsoïde passant par la source lumineuse S. Le moyen de mise en mouvement 20 est positionné au moins en partie dans ledit volume V. The moving means 20 being cooled by means of the radiator 30, it is thus possible to position the moving means 20 as close as possible to the light source, without the risk of it becoming too heated, and thus to improve the the size of the projector. The moving means 20 can therefore be located below said light source S, that is to say that it passes through a plane O perpendicular to the axis of symmetry X of the passing portion of ellipsoid. by the light source S. The moving means 20 is positioned at least partly in said volume V.
Le projecteur de l'invention peut comprendre également plusieurs réflecteurs demi-elliptiques 12 comme illustré sur la figure 3. Ces réflecteurs 12 sont par exemple positionnés les uns à côté des autres. Le fait de positionner le moyen de mise en mouvement 20 en amont de l'élément optique mobile 4 est d'autant plus avantageux dans ce mode de réalisation, car il permet de rapprocher la ou les lentilles 3 de chacun des réflecteurs sans être gêné par la présence du moyen de mise en mouvement. Avantageusement, le projecteur comprend un unique moyen de mise en mouvement 20 pour l'ensemble des réflecteurs 12, agencé pour rendre mobiles les éléments optiques mobiles 4 de chaque réflecteur. The projector of the invention may also include several half-elliptical reflectors 12 as shown in Figure 3. These reflectors 12 are for example positioned next to each other. Positioning the moving means 20 upstream of the mobile optical element 4 is all the more advantageous in this embodiment because it allows the lens (s) 3 to be brought closer to each of the reflectors without being disturbed by the presence of the moving means. Advantageously, the projector comprises a single means of movement 20 for all the reflectors 12, arranged to make the moving optical elements 4 of each reflector mobile.
Le projecteur comprend, par exemple, un support 19 sur lequel le moyen de mise en mouvement 20 est monté. Le montage peut se faire par un encliquetage à l'aide d'une bride métallique ou plastique, une soudure, un vissage au tout autre moyen d'assemblage rigide. L'invention a été décrite avec une combinaison d'un miroir plan 4 et d'une lentille 3 qui renverse les rayons lumineux et qui donne la forme voulue au faisceau. Elle pourrait tout aussi bien être réalisée par un organe unique de retournement du faisceau, tel qu'un miroir présentant une forme complexe qui renvoie le faisceau lumineux vers l'avant en lui donnant la forme voulue. Le passage de la configuration des feux de route aux feux de croisement reste, dans ce cas, assuré par un déplacement du miroir à forme complexe, qui est ainsi mobile comme l'est le miroir plan de la configuration décrite. The projector comprises, for example, a support 19 on which the moving means 20 is mounted. The assembly can be done by snapping with a metal or plastic flange, welding, screwing to any other means of rigid assembly. The invention has been described with a combination of a plane mirror 4 and a lens 3 which reverses the light rays and gives the desired shape to the beam. It could equally well be achieved by a single beam reversal member, such as a mirror having a complex shape that returns the light beam forward giving it the desired shape. The transition from the high beam configuration to the low beam is, in this case, provided by a displacement of the complex shape mirror, which is thus movable as is the plane mirror of the configuration described.

Claims

REVENDICATIONS
1. Projecteur (1 ) pour véhicule automobile comportant une source lumineuse (S), un moyen de mise en mouvement (20), un élément optique mobile (4) configuré pour être entraîné par ledit moyen de mise en mouvement (20) et agencé pour couper et/ou réfléchir un faisceau lumineux émis par la source (S), un radiateur (30) relié thermiquement audit moyen de mise en mouvement (20) et un réflecteur (12), ledit faisceau lumineux étant réfléchi par le réflecteur (12) avant d'être coupé et/ou réfléchi par l'élément optique mobile (4), ledit réflecteur (12) ayant la forme d'une portion de demi-ellipsoïde s'étendant au-dessus d'un plan de symétrie dudit ellipsoïde, ladite source (S) étant positionnée sur l'axe de symétrie (X) de l'ellipsoïde, le radiateur (30) étant positionné en dessous du plan de symétrie dudit ellipsoïde, A headlamp (1) for a motor vehicle comprising a light source (S), a moving means (20), a movable optical element (4) configured to be driven by said moving means (20) and arranged for cutting and / or reflecting a light beam emitted by the source (S), a heat sink (30) thermally connected to said moving means (20) and a reflector (12), said light beam being reflected by the reflector (12). ) before being cut and / or reflected by the movable optical element (4), said reflector (12) having the shape of a half-ellipsoid portion extending above a plane of symmetry of said ellipsoid said source (S) being positioned on the axis of symmetry (X) of the ellipsoid, the radiator (30) being positioned below the plane of symmetry of said ellipsoid,
caractérisé en ce que ledit radiateur (30) est situé au moins en partie à l'intérieur dudit ellipsoïde entre un fond (13) du réflecteur (12) et ledit élément optique mobile (4), ledit radiateur (30) étant positionné au moins en partie dans un volume (V) défini par l'extension cylindrique selon un axe optique d'une lentille optique (3) d'un contour périphérique de la lentille (3) jusqu'à un plan transversal passant par un fond (13) du réflecteur (12). characterized in that said radiator (30) is located at least partly inside said ellipsoid between a bottom (13) of the reflector (12) and said movable optical element (4), said radiator (30) being positioned at least partly in a volume (V) defined by the cylindrical extension along an optical axis of an optical lens (3) from a peripheral contour of the lens (3) to a transverse plane passing through a bottom (13) reflector (12).
2. Projecteur (1 ) selon la revendication 1 , dans lequel le moyen de mise en mouvement (20) est situé dans la même zone du projecteur que le radiateur (30).2. Projector (1) according to claim 1, wherein the moving means (20) is located in the same area of the projector as the radiator (30).
3. Projecteur (1 ) selon l'une des revendications 1 et 2, dans lequel la source lumineuse (S) comprend au moins une diode électroluminescente, dite diode LED.3. Projector (1) according to one of claims 1 and 2, wherein the light source (S) comprises at least one light emitting diode, LED said diode.
4. Projecteur (1 ) selon la revendication 3, dans lequel le radiateur (30) est configuré pour dissiper la chaleur générée par la ou les diodes LED. 4. Projector (1) according to claim 3, wherein the radiator (30) is configured to dissipate the heat generated by the LED or diodes.
5. Projecteur (1 ) selon l'une quelconque des revendications précédentes, dans lequel le radiateur (30) est positionné en amont de l'élément optique mobile (4) dans le sens d'émission dudit faisceau lumineux.  5. Projector (1) according to any one of the preceding claims, wherein the radiator (30) is positioned upstream of the movable optical element (4) in the direction of emission of said light beam.
PCT/FR2015/052833 2014-10-30 2015-10-22 Semi-elliptical projector comprising a radiator WO2016066929A1 (en)

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CN201580057702.6A CN107002963B (en) 2014-10-30 2015-10-22 Semi-elliptical projection lamp comprising radiator
EP15793880.4A EP3212996B1 (en) 2014-10-30 2015-10-22 Semi-elliptical projector comprising a radiator

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CN107002963A (en) 2017-08-01
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CN107002963B (en) 2019-12-10
FR3028004B1 (en) 2019-08-02
FR3028004A1 (en) 2016-05-06

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