EP2241798A1 - Support for a light source such as a light-emitting diode - Google Patents

Support for a light source such as a light-emitting diode Download PDF

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Publication number
EP2241798A1
EP2241798A1 EP10159336A EP10159336A EP2241798A1 EP 2241798 A1 EP2241798 A1 EP 2241798A1 EP 10159336 A EP10159336 A EP 10159336A EP 10159336 A EP10159336 A EP 10159336A EP 2241798 A1 EP2241798 A1 EP 2241798A1
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EP
European Patent Office
Prior art keywords
light source
support
module
lighting
type
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.)
Granted
Application number
EP10159336A
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German (de)
French (fr)
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EP2241798B1 (en
Inventor
Eric Moisy
Luis Mora
Jesus Romo
Jose-Manuel Herrera
Miguel-Angel Pena
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Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP2241798A1 publication Critical patent/EP2241798A1/en
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Publication of EP2241798B1 publication Critical patent/EP2241798B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/006—Fastening of light sources or lamp holders of point-like light sources, e.g. incandescent or halogen lamps, with screw-threaded or bayonet base
    • F21V19/007—Fastening of light sources or lamp holders of point-like light sources, e.g. incandescent or halogen lamps, with screw-threaded or bayonet base the support means engaging the vessel of the source
    • 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]

Definitions

  • the invention relates to a light source support for a lighting module for a motor vehicle, more particularly a light source support of the light-emitting diode type for lateral lighting module.
  • the invention also relates to a lighting module comprising the support and a lighting device comprising the module.
  • Light emitting diode light sources are currently preferred to more conventional sources such as discharge lamps and halogen lamps for various reasons.
  • the main reason is a better intrinsic efficiency and the fact that the heat produced nevertheless can be distributed over all the constituent modules of the lighting or signal boxes.
  • the light emitting diodes are distributed in as many point light sources as there are diodes throughout the housing.
  • the temperature of a light emitting diode is relatively low compared to the temperature of a conventional lamp and even if the hot spots are distributed in the housing, it is still necessary to cool such a light source.
  • To cool electronic components, and especially power diodes it is known to mount the component to be cooled on a radiator. The natural convection that occurs with the radiator ensures cooling.
  • the ambient air is the air of the housing of the device. It is therefore relatively hot (typically 95-100 ° C). It is therefore necessary to use a radiator of sufficient size to cool the component satisfactorily.
  • the document FR 2 920516 A1 discloses a vehicle headlight box whose light sources are of the light-emitting diode type.
  • Each light-emitting diode support is provided with cooling fins near the diode forming a cooling radiator. These fins are located at the rear of the optical part so as not to interfere with the emitted beams.
  • the module of the two light sources arranged next to each other at the bottom of the housing is not provided with lenses, so that the support of the diodes protruding from the reflector is visible from outside.
  • the cooling fins are provided on the back of the reflector and not in direct contact with the support of the diodes. This construction therefore does not appear satisfactory both from an aesthetic point of view and from a cooling point of view.
  • the document EP 1 722 666 A1 discloses a vehicle lighting unit comprising a directional type lighting module. It is a secondary module orientable along a vertical axis.
  • the light source an electroluminescent diode
  • a small reflector very close to the diode returns light emitted to the rear of the housing where a larger reflector projects the light toward the front of the vehicle.
  • the movable member comprises an inclined surface supporting the diode and a fairly massive bottom portion provided with cooling fins. This device has the disadvantage of being quite massive and complicated by the rotation and, in addition, to require a reflector near the diode returning the rays backwards.
  • lateral lighting functions such as a lighting function of the "cornering" type or a fixed lighting function during cornering, also called FBL function (for "Fixed Bending Light” in English) corresponding to the regulations and standards in force
  • FBL function for "Fixed Bending Light” in English
  • the document JP 2005-19328 discloses a plurality of lighting devices with a side lighting function using light sources of the halogen lamp type illuminating throughout its perimeter. A symmetrical reflector in revolution is provided around the light source to reflect the rays emitted by the source into a beam. These solutions are not applicable to a light source of the diode type electroluminescence.
  • the document DE 198 36 256 A1 discloses a vehicle lighting unit with, inter alia, a code-type lighting function and an additional illumination function oriented obliquely to the longitudinal axis of the vehicle which is useful in cornering.
  • Each function has a specific light source, but both functions share a single reflector.
  • the additional oblique lighting function uses a specific part of the reflector which has the effect of orienting the rays obliquely to the optical axis of the lighting function.
  • the light source is of the halogen or discharge lamp type emitting in a sector of 360 ° around its main axis. This device is therefore not suitable for a light source of the light emitting diode type which illuminates essentially in a half-plane.
  • the object of the invention is to propose a solution that overcomes at least one of the disadvantages mentioned above.
  • the invention consists of a light source support, preferably of the electroluminescence diode type, for a lighting and / or signaling device for a motor vehicle, comprising: a first surface intended to support the light source; a second surface for heat removal; a body connecting the first surface to the second surface; and wherein the second surface extends in a half-plane space delimited by the plane of the first surface and opposite to the light source.
  • the body comprises a rounded portion extending between a front edge of the first surface and the edge of the second surface opposite the plane of the first surface, the rounded portion of the body preferably comprising a surface acting as a cache of the light source.
  • the light-emitting diode, or LED comprises a photoemissive element placed on a substrate.
  • the support of the LED is preferably performed by positioning the substrate directly or indirectly against the support surface. This substrate is thus found preferentially perpendicular to the normal to this surface, thus coplanar with it when this surface is flat.
  • the first and second surfaces are contained in secant planes. That is, they are not coplanar. This makes it possible to evacuate the heat in an area further away from the light source. This also makes it possible to mount the second surface at a reflector by orienting the first surface and therefore the light source towards the reflective surface of the reflector.
  • the first and second surfaces form between them an angle of between 0 degrees and 90 degrees.
  • This allows precise positioning of the light source, as part of a side lighting function.
  • this angle is advantageous in the case of a "cornering" type function.
  • this angle is an angle close to a right angle, ie an angle of about 90 °.
  • the "cornering" function is implemented at speeds below about 40 km / h. This function allows you to illuminate on the side, as part of a maneuver of the vehicle or when it moves in a very tight turn like hairpin.
  • the angle between 0 degrees and 90 degrees is also advantageous in the context of a fixed lighting function during cornering, or FBL. These FBL functions are implemented when the vehicle is traveling at speeds above 40 km / h, in order to illuminate in the bends of the road that the vehicle uses.
  • the second surface comprises cooling fins.
  • the first surface is essentially flat.
  • the body, the first surface and the second surface are made of material, preferably of injected aluminum.
  • the body comprises one or more plates connecting the first surface to the second surface.
  • the heat transfer to the second surface is thus improved.
  • these plates have a curved edge preferably acting as a cache of the light source.
  • the rounded portion is in the form of a curved ribbon. This hides the support surface over a wider angle. Preferably, the rounded portion extends beyond the second surface and also removes heat at the rear of the second surface.
  • the respective opposite edges of the first and second surfaces are in two approximately parallel planes.
  • a precise positioning of the first support surface of the LED is ensured by correctly aligning the opposite edge of the second surface.
  • This is particularly advantageous when this second surface is placed in the reflector, more particularly in flush with the reflective surface of this reflector.
  • This advantage is even more beneficial in the case where the light source is an LED, in particular a Lambertian LED.
  • a lambertian LED emits in a direction generally approximately perpendicular to the plane of its substrate which supports its light emitting element, and therefore about the normal to the surface that supports the LED.
  • the first support surface of the LED and therefore the overall direction of emission of the LED will be oriented in the desired direction.
  • the invention also consists of a lighting module for a motor vehicle, comprising: a reflector with a concave reflecting surface; a light source, preferably of the electroluminescent diode type, disposed near the concave reflecting surface; a support as described above supporting the light source so that the first surface supporting the light source is directed towards the concave reflecting surface.
  • the second surface is housed in an opening of the reflecting surface, preferably substantially flush with the reflecting surface near the opening.
  • the reflecting surface has a shape such that its optical axis crosses the plane containing the first surface of the support, the reflecting surface preferably having an approximately parabolic sectional shape.
  • the optical module having a lighting function of code or road type is an elliptical module, that is to say combining a reflector whose surface is an ellipsoid, this reflector being associated with a projection lens .
  • Vehicle headlamp means the lighting device placed at the front of the vehicle, also referred to as the vehicle headlight.
  • the plane of the first surface of the light source support is approximately parallel to the optical axis of the optical module according to the present invention.
  • the body of the support comprises a rounded part with a surface acting as a cover of the light source, said surface being oriented laterally with respect to the optical axis of the lighting module of type code and / or road type on the side of this type of lighting module code and / or road type.
  • Embodiments of the invention are illustrated in the figures and described hereinafter with respect to a mounting position within a vehicle headlamp.
  • This type of application although preponderant is not limiting so that the terms used such as “horizontal”, “vertical”, “high”, “low”, “superior”, “lower” for example, in order to describe the positions of the different elements are not absolute but rather to interpret in a relative manner describing the positions of the elements with respect to their arrangement in the figures.
  • the described lighting devices could be mounted in other positions and / or for other applications.
  • the relative positions of the various optical elements such as light sources, reflectors and lenses expressed for simplicity of understanding by alignment of the optical axes and / or correspondence of the respective foci are not to be interpreted accurately in the measurement where slight variations are conceivable or even desirable in order, among other things, to correct the non-perfect nature and certain optical aberrations of the optical elements or to obtain certain additional effects.
  • the figure 1 illustrates a lighting box for a motor vehicle. This is a horizontal sectional view. More particularly, the section is made in two horizontal planes slightly offset in height, the boundary between these two sectional planes being indicated by the longitudinal line.
  • the housing 1 comprises a lighting module of the elliptical module type 2, a direction indicator module or flashing module 3 and a side lighting module 5. These three modules are protected by a common mirror 4 of the housing 1. It is is a vehicle left light box.
  • the lateral illumination module 5 essentially comprises a reflector 6, a light source 8 of the electroluminescent diode type and a light source support 7.
  • the reflector comprises a concave interior surface oriented towards the side of the elliptical module 2 in the plane of the illustration so as to provide a complementary lateral lighting function, useful when turning at low speed, typically below 40 km / h.
  • the support 7 fulfills a triple function, namely a light source support, heat removal means and aesthetic cover. Indeed, the support has a generally rectangular triangular section whose first face carries the light source and the other face approximately perpendicular to the first is embedded in the surface of the reflector and has cooling fins thus located at the rear of the reflector surface.
  • the support comprises an outer surface facing the front left side (seen in the direction of travel of the vehicle) of the housing, this surface serving as aesthetic cover of the support of the light source.
  • the figure 2 is a detailed perspective view of a first embodiment of a light source support according to the invention.
  • the support 7 comprises a first substantially planar surface 10 and a second surface 11 forming an angle close to 90 ° with the first surface.
  • the first surface serves as a support for the light-emitting diode type light source 8. This light source illuminates essentially in a half-space delimited by the plane of the first surface 10.
  • a connection ply 9 is provided at the light source to be supplied with electrical energy.
  • the support also comprises a portion 12 in the form of curved ribbon connecting the front edge (according to the direction of travel of the vehicle with reference to the housing of the figure 1 ) from the first surface 10 to the outer edge (according to the direction of travel of the vehicle and with respect to the longitudinal axis of the vehicle with reference to the housing of the figure 1 ) of the second surface 11.
  • the portion 12 of the support essentially plays a role of cache support.
  • a reinforcement rib 13 in a longitudinal median plane is provided. It provides a certain rigidity to the support while providing a direct thermal bridge between the support surface 10 of the light source and the surface 11 for discharging a portion of the heat produced by the light source.
  • the surface 10 is remote from the surface 11 in the present example, but it should be noted that the surface 10 could be in direct connection with the surface 11, as is the case for the support illustrated in FIG. figure 1 .
  • the surface 11 is intended to receive cooling fins.
  • the support is made of injected aluminum so that all its components are of the same part.
  • the cooling fins may be integral with the support or a fin module may be attached, for example, by gluing on the surface 11.
  • a side lighting module with support for the figure 2 is illustrated at the figure 3 .
  • the concave reflecting surface 6. This surface is segmented into a series of facets.
  • the support 7 is embedded in an opening of the surface in question so that the surface 11 is oriented towards the rear of the reflecting surface of the module.
  • the reflective surface has a roughly paraboloidal section with a first focus corresponding approximately to the light source.
  • the rays emitted by the light source to the reflecting surface are reflected by the light in an oblique direction relative to a longitudinal axis of the vehicle so as to generate an oblique beam.
  • the reflecting surface 6 is interrupted at its front by a ridged surface 14 intended to provide a space for the neighboring module (in particular the flashing module 3 at the figure 1 ) and to reduce any glare that could be caused by the beam.
  • a side lighting module similar to the module of the figure 3 is illustrated at the figure 4 . It differs in that it comprises a second embodiment of the light source support. It includes, like that of the figure 2 , a first surface intended to carry the light source and a second surface forming an angle with the first, preferably of the order of 90 °, and intended to provide a heat dissipation function towards the rear of the reflector.
  • the support comprises, instead of the rib 13 of the first example to the figure 2 two parallel plates 13 and 13 'connecting the first and the second surface. These plates have a general shape in disc section, more particularly in quarter disc. The disc shape is not limiting and may have an elliptical shape or an oval shape. The curved edges of these plates provide the aesthetic function and cover of the support of the light source.
  • the light source support consists essentially of a support surface of a light source and a fixing portion intended to be embedded or at least introduced into an opening of a reflector, the support surface forming an angle close to a right angle with the fixing portion and the fixing portion extending substantially in a half plane opposite to that of the light source.
  • the support also comprises a part at least partially filling the space available between the support surface and the fixing part in the half-plane opposite to that of emission of the light source so as to ensure a triple function of thermal bridge , mechanical support and aesthetic cache.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The support (7) has a surface (10) for supporting a light source (8) i.e. LED, and another surface (11) for evacuation of heat, where the two surfaces are made of injected aluminum. A body connects two surfaces, where one of the surfaces is extended in a half plane surface defined by a plane of the other surface. The body has a round part (12) extended between a front edge of the latter surface and an edge of the former surface opposite to the plane of the latter surface. The round part has a surface that covers the light source. An independent claim is also included for a headlight for a motor vehicle comprising a lighting module.

Description

L'invention a trait à un support de source lumineuse pour module d'éclairage pour véhicule automobile, plus particulièrement un support de source lumineuse du type diode électroluminescente pour module d'éclairage latéral. L'invention a trait également à un module d'éclairage comprenant le support et un dispositif d'éclairage comprenant le module.The invention relates to a light source support for a lighting module for a motor vehicle, more particularly a light source support of the light-emitting diode type for lateral lighting module. The invention also relates to a lighting module comprising the support and a lighting device comprising the module.

Les sources lumineuses à diode électroluminescente sont actuellement préférées aux sources plus classiques comme les lampes à décharge et les lampes halogène, et ce pour diverses raisons. La raison principale est un rendement intrinsèque meilleur et le fait que la chaleur malgré tout produite peut être répartie sur l'ensemble des modules constitutifs des boîtiers d'éclairage ou de signalisation. En effet, les diodes électroluminescentes sont réparties en autant de sources lumineuses ponctuelles qu'il y a de diodes dans l'ensemble du boîtier. Cependant, même si la température d'une diode électroluminescente est relativement faible par rapport à la température d'une lampe classique et même si les points chauds sont répartis dans le boîtier, il est tout de même nécessaire de refroidir une telle source lumineuse. Pour refroidir des composants électroniques, et notamment des diodes de puissance, il est connu de monter le composant à refroidir sur un radiateur. La convection naturelle qui s'opère avec le radiateur assure le refroidissement. Dans le cas de dispositifs d'éclairage ou de signalisation d'un véhicule, l'air ambiant est l'air du boîtier du dispositif. Il est donc relativement chaud (typiquement 95-100°C). Il est par conséquent nécessaire d'utiliser un radiateur de dimension suffisante pour refroidir le composant de manière satisfaisante.Light emitting diode light sources are currently preferred to more conventional sources such as discharge lamps and halogen lamps for various reasons. The main reason is a better intrinsic efficiency and the fact that the heat produced nevertheless can be distributed over all the constituent modules of the lighting or signal boxes. Indeed, the light emitting diodes are distributed in as many point light sources as there are diodes throughout the housing. However, even if the temperature of a light emitting diode is relatively low compared to the temperature of a conventional lamp and even if the hot spots are distributed in the housing, it is still necessary to cool such a light source. To cool electronic components, and especially power diodes, it is known to mount the component to be cooled on a radiator. The natural convection that occurs with the radiator ensures cooling. In the case of lighting or signaling devices of a vehicle, the ambient air is the air of the housing of the device. It is therefore relatively hot (typically 95-100 ° C). It is therefore necessary to use a radiator of sufficient size to cool the component satisfactorily.

Le document FR 2 920516 A1 divulgue un boîtier de projecteur pour véhicule dont les sources lumineuses sont du type diode électroluminescente. Chaque support de diode électroluminescente est pourvu d'ailettes de refroidissement à proximité de la diode formant un radiateur de refroidissement. Ces ailettes sont situées à l'arrière de la partie optique afin de ne pas gêner les faisceaux émis. Le module des deux sources lumineuses disposées l'une à côté de l'autre au bas du boîtier n'est pas pourvu de lentilles, si bien que le support des diodes en saillie du réflecteur est visible depuis l'extérieur. De plus, les ailettes de refroidissement sont prévues sur l'arrière du réflecteur et non en contact direct avec le support des diodes. Cette construction n'apparaît donc pas satisfaisante tant du point de vue esthétique que du point de vue refroidissement.The document FR 2 920516 A1 discloses a vehicle headlight box whose light sources are of the light-emitting diode type. Each light-emitting diode support is provided with cooling fins near the diode forming a cooling radiator. These fins are located at the rear of the optical part so as not to interfere with the emitted beams. The module of the two light sources arranged next to each other at the bottom of the housing is not provided with lenses, so that the support of the diodes protruding from the reflector is visible from outside. In addition, the cooling fins are provided on the back of the reflector and not in direct contact with the support of the diodes. This construction therefore does not appear satisfactory both from an aesthetic point of view and from a cooling point of view.

Le document EP 1 722 666 A1 divulgue un boîtier d'éclairage pour véhicule comprenant un module d'éclairage du type directionnel. Il s'agit d'un module secondaire orientable selon un axe vertical. La source lumineuse, une diode électroluminescente, est supportée par un élément mobile en rotation. Un réflecteur de petite taille et très proche de la diode renvoie la lumière émise vers l'arrière du boîtier où un réflecteur plus grand projette la lumière vers l'avant du véhicule. L'élément mobile comprend une surface inclinée supportant la diode ainsi qu'une partie basse assez massive pourvue d'ailettes de refroidissement. Ce dispositif présente l'inconvénient d'être assez massif et complexe de par la rotation et, de plus, de nécessiter un réflecteur à proximité de la diode renvoyant les rayons vers l'arrière.The document EP 1 722 666 A1 discloses a vehicle lighting unit comprising a directional type lighting module. It is a secondary module orientable along a vertical axis. The light source, an electroluminescent diode, is supported by a rotating member. A small reflector very close to the diode returns light emitted to the rear of the housing where a larger reflector projects the light toward the front of the vehicle. The movable member comprises an inclined surface supporting the diode and a fairly massive bottom portion provided with cooling fins. This device has the disadvantage of being quite massive and complicated by the rotation and, in addition, to require a reflector near the diode returning the rays backwards.

Dans le cadre de fonctions d'éclairage latérales, telle qu'une fonction d'éclairage du type « cornering » ou encore une fonction d'éclairage fixe dans les virages, encore appelée fonction FBL (pour « Fixed Bending Light » en langue anglaise) correspondant aux règlements et normes en vigueur, il est souhaitable de prévoir un module assez simple avec éclairage par réflexion sur un réflecteur sans lentille pour des raisons, en autres, de coût de réalisation et d'encombrement. Dans ce cas de figure, la source lumineuse est visible. Il est souhaitable de la cacher pour des raisons d'esthétique, ainsi que pour réduire les éblouissements. Il est également nécessaire de la refroidir.In the context of lateral lighting functions, such as a lighting function of the "cornering" type or a fixed lighting function during cornering, also called FBL function (for "Fixed Bending Light" in English) corresponding to the regulations and standards in force, it is desirable to provide a fairly simple module with reflective lighting on a reflector without lens for reasons, in other, cost of implementation and space. In this case, the light source is visible. It is desirable to hide it for aesthetic reasons, as well as to reduce dazzle. It is also necessary to cool it.

Dans le cadre de cette fonction, le document JP 2005-19328 divulgue plusieurs dispositifs d'éclairage avec une fonction d'éclairage latéral mettant en oeuvre des sources lumineuses du type lampe halogène éclairant sur tout son périmètre. Un réflecteur symétrique en révolution est prévu autour de la source lumineuse afin de réfléchir les rayons émis par la source en un faisceau. Ces solutions ne sont pas applicables à une source lumineuse du type diode à électroluminescence.As part of this function, the document JP 2005-19328 discloses a plurality of lighting devices with a side lighting function using light sources of the halogen lamp type illuminating throughout its perimeter. A symmetrical reflector in revolution is provided around the light source to reflect the rays emitted by the source into a beam. These solutions are not applicable to a light source of the diode type electroluminescence.

Le document DE 198 36 256 A1 divulgue un boîtier d'éclairage pour véhicule avec, entre autres, une fonction d'éclairage du type code et une fonction d'éclairage supplémentaire orienté en oblique par rapport à l'axe longitudinal du véhicule utile dans les virages. Chaque fonction comporte une source lumineuse spécifique mais les deux fonctions partagent par contre un seul réflecteur. La fonction d'éclairage supplémentaire en oblique exploite une partie du réflecteur spécifique qui a pour effet d'orienter les rayons en oblique par rapport à l'axe optique de la fonction d'éclairage. La source lumineuse est du type à lampe halogène ou à décharge émettant dans un secteur de 360° autour de son axe principale. Ce dispositif n'est donc pas adapté à une source lumineuse du type à diode électroluminescente qui éclaire essentiellement dans un demi-plan.The document DE 198 36 256 A1 discloses a vehicle lighting unit with, inter alia, a code-type lighting function and an additional illumination function oriented obliquely to the longitudinal axis of the vehicle which is useful in cornering. Each function has a specific light source, but both functions share a single reflector. The additional oblique lighting function uses a specific part of the reflector which has the effect of orienting the rays obliquely to the optical axis of the lighting function. The light source is of the halogen or discharge lamp type emitting in a sector of 360 ° around its main axis. This device is therefore not suitable for a light source of the light emitting diode type which illuminates essentially in a half-plane.

L'invention a pour objet de proposer une solution palliant au moins un des inconvénients sus mentionnés.The object of the invention is to propose a solution that overcomes at least one of the disadvantages mentioned above.

L'invention consiste en un support de source lumineuse, préférentiellement du type diode à électroluminescence, pour dispositif d'éclairage et/ou de signalisation pour véhicule automobile, comprenant : une première surface destinée à supporter la source lumineuse; une deuxième surface destinée à l'évacuation de chaleur; un corps reliant la première surface à la deuxième surface; et où la deuxième surface s'étend dans un espace demi-plan délimité par le plan de la première surface et opposé à la source lumineuse. Selon un mode avantageux de l'invention, le corps comprend une partie arrondie s'étendant entre un bord avant de la première surface et le bord de la deuxième surface opposé au plan de la première surface, ladite partie arrondie du corps comprenant préférentiellement une surface faisant office de cache de la source lumineuse.The invention consists of a light source support, preferably of the electroluminescence diode type, for a lighting and / or signaling device for a motor vehicle, comprising: a first surface intended to support the light source; a second surface for heat removal; a body connecting the first surface to the second surface; and wherein the second surface extends in a half-plane space delimited by the plane of the first surface and opposite to the light source. According to an advantageous embodiment of the invention, the body comprises a rounded portion extending between a front edge of the first surface and the edge of the second surface opposite the plane of the first surface, the rounded portion of the body preferably comprising a surface acting as a cache of the light source.

Ce support assure de par son principe de construction la triple fonction de support de la source lumineuse, d'évacuateur de chaleur vers l'arrière du réflecteur dans lequel un tel support serait utilisé, et de cache esthétique du support. Il est à noté que de manière classique la diode électroluminescente, ou LED, comprend un élément photoémissif placé sur un substrat. Le support de la LED est effectué préférentiellement par positionnement du substrat directement ou indirectement contre la surface de support. Ce substrat se retrouve ainsi préférentiellement perpendiculaire à la normale à cette surface, donc coplanaire à celle-ci lorsque cette surface est plane.This support assures by its principle of construction the triple support function of the light source, heat evacuator towards the rear of the reflector in which such a support would be used, and aesthetic cover of the support. It should be noted that, in a conventional manner, the light-emitting diode, or LED, comprises a photoemissive element placed on a substrate. The support of the LED is preferably performed by positioning the substrate directly or indirectly against the support surface. This substrate is thus found preferentially perpendicular to the normal to this surface, thus coplanar with it when this surface is flat.

Selon un mode avantageux de l'invention, la première et la deuxième surface sont contenues dans des plans sécants. C'est-à-dire qu'elles ne sont pas coplanaires. Ceci permet d'évacuer la chaleur dans une zone plus écartée de la source lumineuse. Cela permet également de monter la deuxième surface au niveau d'un réflecteur en orientant la première surface et donc la source lumineuse vers la surface réfléchissante du réflecteur.According to an advantageous embodiment of the invention, the first and second surfaces are contained in secant planes. That is, they are not coplanar. This makes it possible to evacuate the heat in an area further away from the light source. This also makes it possible to mount the second surface at a reflector by orienting the first surface and therefore the light source towards the reflective surface of the reflector.

Selon un mode avantageux de l'invention, la première et la deuxième surface forment entre elles un angle compris entre 0 degrés et 90 degrés. Cela permet un positionnement précis de la source lumineuse, dans le cadre d'une fonction d'éclairage latéral. Par exemple, cela est avantageux dans le cas d'une fonction de type « cornering ». Préférentiellement, et plus particulièrement dans le cadre d'une fonction de type « cornering » cet angle est un angle proche d'un angle droit, soit un angle d'environ 90°. La fonction de type « cornering » est mise en oeuvre à des vitesses en dessous d'environ 40 km/h. Cette fonction permet d'éclairer sur le côté, dans le cadre d'une manoeuvre du véhicule ou lorsque ce dernier évolue dans un virage très serré du type épingle à cheveux. L'angle compris entre 0 degrés et 90 degrés est également avantageux dans le cadre d'une fonction d'éclairage fixe dans les virages, ou FBL. Ces fonctions FBL sont mises en oeuvre lorsque le véhicule roule à des vitesses supérieures à 40 km/h, afin d'éclairer dans les virages de la route qu'emprunte le véhicule.According to an advantageous embodiment of the invention, the first and second surfaces form between them an angle of between 0 degrees and 90 degrees. This allows precise positioning of the light source, as part of a side lighting function. For example, this is advantageous in the case of a "cornering" type function. Preferably, and more particularly in the context of a "cornering" function, this angle is an angle close to a right angle, ie an angle of about 90 °. The "cornering" function is implemented at speeds below about 40 km / h. This function allows you to illuminate on the side, as part of a maneuver of the vehicle or when it moves in a very tight turn like hairpin. The angle between 0 degrees and 90 degrees is also advantageous in the context of a fixed lighting function during cornering, or FBL. These FBL functions are implemented when the vehicle is traveling at speeds above 40 km / h, in order to illuminate in the bends of the road that the vehicle uses.

Selon un mode avantageux de l'invention, la deuxième surface comprend des ailettes de refroidissement.According to an advantageous embodiment of the invention, the second surface comprises cooling fins.

Selon un mode avantageux de l'invention, la première surface est essentiellement plane.According to an advantageous embodiment of the invention, the first surface is essentially flat.

Selon un mode avantageux de l'invention, le corps, la première surface et la deuxième surface sont venues de matière, préférentiellement en aluminium injecté.According to an advantageous embodiment of the invention, the body, the first surface and the second surface are made of material, preferably of injected aluminum.

Selon un mode avantageux de l'invention, le corps comprend une ou plusieurs platines reliant la première surface à la deuxième surface. Le transfert de chaleur à la deuxième surface est ainsi amélioré. Préférentiellement, ces platines présentent un bord courbé faisant préférentiellement office de cache de la source lumineuse.According to an advantageous embodiment of the invention, the body comprises one or more plates connecting the first surface to the second surface. The heat transfer to the second surface is thus improved. Preferably, these plates have a curved edge preferably acting as a cache of the light source.

Selon un mode avantageux de l'invention, la partie arrondie est en forme de ruban courbé. Ceci permet de cacher la surface de support sur un plus grand angle. Préférentiellement, la partie arrondie se prolonge au-delà de la deuxième surface et permet également d'évacuer de la chaleur à l'arrière de la deuxième surface.According to an advantageous embodiment of the invention, the rounded portion is in the form of a curved ribbon. This hides the support surface over a wider angle. Preferably, the rounded portion extends beyond the second surface and also removes heat at the rear of the second surface.

Selon un mode avantageux de l'invention, les bords opposés respectifs des première et deuxième surfaces sont dans deux plans approximativement parallèles. Ainsi, un positionnement précis de la première surface de support de la LED est assuré en alignant correctement le bord opposé de la deuxième surface. Ceci est particulièrement avantageux lorsque cette deuxième surface est placée dans le réflecteur, plus particulièrement en affleurement avec la surface réfléchissante de ce réflecteur. Cet avantage est encore plus bénéfique dans le cas où la source lumineuse est une LED, notamment une LED lambertienne. En effet, une LED lambertienne émet selon une direction globalement environ perpendiculaire au plan de son substrat qui supporte sont élément photoémissif, et donc selon environ la normale à la surface qui supporte la LED. Ainsi par l'alignement du bord la deuxième surface, notamment dans son emplacement dans le réflecteur, la première surface de support de la LED et donc la direction globale d'émission de la LED, seront orientées selon la direction souhaitée.According to an advantageous embodiment of the invention, the respective opposite edges of the first and second surfaces are in two approximately parallel planes. Thus, a precise positioning of the first support surface of the LED is ensured by correctly aligning the opposite edge of the second surface. This is particularly advantageous when this second surface is placed in the reflector, more particularly in flush with the reflective surface of this reflector. This advantage is even more beneficial in the case where the light source is an LED, in particular a Lambertian LED. Indeed, a lambertian LED emits in a direction generally approximately perpendicular to the plane of its substrate which supports its light emitting element, and therefore about the normal to the surface that supports the LED. Thus by the alignment of the edge the second surface, especially in its location in the reflector, the first support surface of the LED and therefore the overall direction of emission of the LED, will be oriented in the desired direction.

L'invention consiste également en un module d'éclairage pour véhicule automobile, comprenant: un réflecteur avec une surface réfléchissante concave; une source lumineuse, préférentiellement du type diode électroluminescente, disposée à proximité de la surface réfléchissante concave; un support tel que décrit ci-avant supportant la source lumineuse de sorte à ce que la première surface supportant la source lumineuse soit dirigée vers la surface réfléchissante concave.The invention also consists of a lighting module for a motor vehicle, comprising: a reflector with a concave reflecting surface; a light source, preferably of the electroluminescent diode type, disposed near the concave reflecting surface; a support as described above supporting the light source so that the first surface supporting the light source is directed towards the concave reflecting surface.

Selon un mode avantageux, dans le module d'éclairage de l'invention, la deuxième surface est logée dans une ouverture de la surface réfléchissante, préférentiellement essentiellement à fleur de la surface réfléchissante à proximité de l'ouverture.According to an advantageous embodiment, in the lighting module of the invention, the second surface is housed in an opening of the reflecting surface, preferably substantially flush with the reflecting surface near the opening.

Selon un mode avantageux, dans le module d'éclairage de l'invention" la surface réfléchissante a une forme telle que son axe optique croise le plan contenant la première surface du support, la surface réfléchissante ayant préférentiellement une forme de section approximativement parabolique.According to an advantageous embodiment, in the lighting module of the invention "the reflecting surface has a shape such that its optical axis crosses the plane containing the first surface of the support, the reflecting surface preferably having an approximately parabolic sectional shape.

L'invention consiste également en un projecteur pour véhicule automobile, comprenant:

  • un module optique avec son axe optique dirigé vers l'avant du véhicule, ce module optique ayant une fonction d'éclairage de type code ou de type route ;
  • un module optique selon la présente invention assurant une fonction d'éclairage latéral Dans ce cas, le projecteur de véhicule automobile peut également comporter également comporter un clignotant avec son axe optique dirigé vers l'avant du véhicule, le projecteur étant disposé en retrait par rapport au clignotant. Dans ce dernier cas le module optique selon la présente invention est par exemple disposé entre le module optique ayant une fonction d'éclairage de type code ou de type route et le clignotant.
The invention also consists of a searchlight for a motor vehicle, comprising:
  • an optical module with its optical axis directed towards the front of the vehicle, this optical module having a lighting function of code or road type;
  • an optical module according to the present invention providing a side lighting function In this case, the motor vehicle headlamp may also comprise also include a flashing with its optical axis directed towards the front of the vehicle, the headlamp being set back from at the flashing light. In the latter case the optical module according to the present invention is for example disposed between the optical module having a lighting function of code or road type and the flashing.

Préférentiellement, le module optique ayant une fonction d'éclairage de type code ou de type route, est un module elliptique, c'est-à-dire associant un réflecteur dont la surface est un ellipsoïde, ce réflecteur étant associé à une lentille de projection.Preferably, the optical module having a lighting function of code or road type, is an elliptical module, that is to say combining a reflector whose surface is an ellipsoid, this reflector being associated with a projection lens .

Par projecteur de véhicule, on entend le dispositif d'éclairage placé à l'avant du véhicule, également désigné sous le terme de phare de véhicule.Vehicle headlamp means the lighting device placed at the front of the vehicle, also referred to as the vehicle headlight.

Selon un mode avantageux de réalisation du projecteur de véhicule automobile selon l'invention, le plan de la première surface du support de source lumineuse est approximativement parallèle à l'axe optique du module optique selon la présente invention. Selon un mode avantageux de l'invention, le corps du support comprend une partie arrondie avec une surface faisant office de cache de la source lumineuse, ladite surface étant orientée latéralement par rapport à l'axe optique du module d'éclairage de type code et/ou de type route du côté de ce module d'éclairage de type code et/ou de type route.According to an advantageous embodiment of the motor vehicle headlamp according to the invention, the plane of the first surface of the light source support is approximately parallel to the optical axis of the optical module according to the present invention. According to an advantageous embodiment of the invention, the body of the support comprises a rounded part with a surface acting as a cover of the light source, said surface being oriented laterally with respect to the optical axis of the lighting module of type code and / or road type on the side of this type of lighting module code and / or road type.

D'autres caractéristiques et avantages de l'invention apparaîtront dans la description détaillée suivante des modes de réalisation de l'invention, donnés à titre indicatif et nullement limitatif.Other features and advantages of the invention will appear in the following detailed description of the embodiments of the invention, given by way of indication and in no way limiting.

Dans les figures suivantes :

  • La figure 1 est une vue en coupe dans deux plans généralement horizontaux légèrement décalés en hauteur d'un boîtier d'éclairage comprenant un module d'éclairage latéral ainsi qu'un support de source lumineuse selon l'invention.
  • La figure 2 est une vue en perspective d'un premier exemple de réalisation du support de source lumineuse selon l'invention.
  • La figure 3 est une vue en perspective d'un module d'éclairage latéral tel que dans le boîtier de la figure 1 et comprenant un support de source lumineuse tel qu'à la figure 2.
  • La figure 4 est une vue en perspective d'un module d'éclairage similaire à celui de la figure 3 comprenant un second exemple de réalisation du support de source lumineuse selon l'invention.
In the following figures:
  • The figure 1 is a sectional view in two generally horizontal planes slightly offset in height of a lighting box comprising a lateral lighting module and a light source support according to the invention.
  • The figure 2 is a perspective view of a first embodiment of the light source support according to the invention.
  • The figure 3 is a perspective view of a side lighting module such as in the housing of the figure 1 and comprising a light source support such as figure 2 .
  • The figure 4 is a perspective view of a lighting module similar to that of the figure 3 comprising a second embodiment of the light source support according to the invention.

Les modes de réalisation de l'invention sont illustrés dans les figures et décrits ci-après par rapport à une position de montage à l'intérieur d'un projecteur de véhicule. Ce type d'application bien que prépondérant n'est pas limitatif si bien que les termes employés tels que « horizontal », « vertical », « haut », « bas », « supérieur(e) », « inférieur(e) » par exemple, en vue de décrire les positions des différents éléments ne sont pas absolus mais plutôt à interpréter de manière relative décrivant les positions des éléments par rapport à leur disposition sur les figures. Les dispositifs d'éclairage décrits pourraient être montés dans d'autres positions et/ou pour d'autres applications. De plus, les positions relatives des différents éléments optiques tels que les sources lumineuses, les réflecteurs et les lentilles exprimées pour la simplicité de compréhension par alignement des axes optiques et/ou correspondance des foyers respectifs ne sont pas à interpréter de manière exacte dans la mesure où de légères variations sont envisageables voire souhaitables en vue, entre autres, de corriger le caractère non parfait et certaines aberrations optiques des éléments optiques ou d'obtenir certains effets supplémentaires.Embodiments of the invention are illustrated in the figures and described hereinafter with respect to a mounting position within a vehicle headlamp. This type of application although preponderant is not limiting so that the terms used such as "horizontal", "vertical", "high", "low", "superior", "lower" for example, in order to describe the positions of the different elements are not absolute but rather to interpret in a relative manner describing the positions of the elements with respect to their arrangement in the figures. The described lighting devices could be mounted in other positions and / or for other applications. In addition, the relative positions of the various optical elements such as light sources, reflectors and lenses expressed for simplicity of understanding by alignment of the optical axes and / or correspondence of the respective foci are not to be interpreted accurately in the measurement where slight variations are conceivable or even desirable in order, among other things, to correct the non-perfect nature and certain optical aberrations of the optical elements or to obtain certain additional effects.

La figure 1 illustre un boîtier d'éclairage pour véhicule automobile. Il s'agit d'une vue en coupe horizontale. Plus particulièrement, la coupe est faite dans deux plans horizontaux légèrement décalés en hauteur, la frontière entre ces deux plans de coupe étant indiquée par le trait longitudinal. Le boîtier 1 comprend un module d'éclairage du type module elliptique 2, un module indicateur de direction ou encore clignotant 3 et un module d'éclairage latéral 5. Ces trois modules sont protégés par une glace commune 4 du boîtier 1. Il s'agit d'un boîtier d'éclairage gauche de véhicule.The figure 1 illustrates a lighting box for a motor vehicle. This is a horizontal sectional view. More particularly, the section is made in two horizontal planes slightly offset in height, the boundary between these two sectional planes being indicated by the longitudinal line. The housing 1 comprises a lighting module of the elliptical module type 2, a direction indicator module or flashing module 3 and a side lighting module 5. These three modules are protected by a common mirror 4 of the housing 1. It is is a vehicle left light box.

Le module d'éclairage latéral 5 comprend essentiellement un réflecteur 6, une source lumineuse 8 du type diode à électroluminescente et un support 7 de source lumineuse. Le réflecteur comprend une surface intérieure concave orientée vers le côté du module elliptique 2 dans le plan de l'illustration de sorte à assurer une fonction d'éclairage latéral complémentaire, utile lors de virage à faible vitesse, typiquement en-dessous de 40 km/h. Le support 7 remplit une triple fonction, à savoir de support de source lumineuse, de moyen d'évacuation de chaleur et de cache esthétique. En effet, le support présente une forme à section généralement triangulaire rectangle dont une première face porte la source lumineuse et l'autre face approximativement perpendiculaire à la première est encastrée dans la surface du réflecteur et comporte des ailettes de refroidissement situées ainsi à l'arrière de la surface du réflecteur. Le support comprend une surface extérieure orientée vers le côté avant gauche (vu dans le sens de marche du véhicule) du boîtier, cette surface servant de cache esthétique du support de la source lumineuse.The lateral illumination module 5 essentially comprises a reflector 6, a light source 8 of the electroluminescent diode type and a light source support 7. The reflector comprises a concave interior surface oriented towards the side of the elliptical module 2 in the plane of the illustration so as to provide a complementary lateral lighting function, useful when turning at low speed, typically below 40 km / h. The support 7 fulfills a triple function, namely a light source support, heat removal means and aesthetic cover. Indeed, the support has a generally rectangular triangular section whose first face carries the light source and the other face approximately perpendicular to the first is embedded in the surface of the reflector and has cooling fins thus located at the rear of the reflector surface. The support comprises an outer surface facing the front left side (seen in the direction of travel of the vehicle) of the housing, this surface serving as aesthetic cover of the support of the light source.

La figure 2 est une vue en perspective détaillée d'un premier exemple de réalisation d'un support de source lumineuse selon l'invention. Le support 7 comprend une première surface 10 essentiellement plane et une deuxième surface 11 formant un angle proche de 90° avec la première surface. La première surface sert de support à la source lumineuse 8 du type à diode électroluminescente. Cette source lumineuse éclaire essentiellement dans un demi-espace délimité par le plan de la première surface 10. Une nappe de connexion 9 est prévue au niveau de la source lumineuse en vue d'être alimentée en énergie électrique. Le support comprend également une partie 12 en forme de ruban courbé reliant le bord avant (selon le sens de marche du véhicule en référence au boîtier de la figure 1) de la première surface 10 au bord extérieur (selon le sens de marche du véhicule et par rapport à l'axe longitudinal du véhicule en référence au boîtier de la figure 1) de la deuxième surface 11. La partie 12 du support joue essentiellement un rôle de cache du support. Une nervure 13 de renfort dans un plan médian longitudinal est prévue. Elle assure une certaine rigidité au support tout en assurant un pont thermique direct entre la surface 10 de support de la source lumineuse et la surface 11 destinée à évacuer une partie de la chaleur produite par la source lumineuse. La surface 10 est à distance de la surface 11 dans l'exemple présent mais il est à noter que la surface 10 pourrait être en liaison directe avec la surface 11, comme cela est le cas pour le support illustré à la figure 1. La surface 11 est destinée à recevoir des ailettes de refroidissement. De manière préférentielle, le support est fait en aluminium injecté de sorte à ce que tous ses composants soient du même tenant. Les ailettes de refroidissement peuvent être venues de matière avec le support ou encore un module d'ailettes peut être rapporté, par exemple, par collage sur la surface 11.The figure 2 is a detailed perspective view of a first embodiment of a light source support according to the invention. The support 7 comprises a first substantially planar surface 10 and a second surface 11 forming an angle close to 90 ° with the first surface. The first surface serves as a support for the light-emitting diode type light source 8. This light source illuminates essentially in a half-space delimited by the plane of the first surface 10. A connection ply 9 is provided at the light source to be supplied with electrical energy. The support also comprises a portion 12 in the form of curved ribbon connecting the front edge (according to the direction of travel of the vehicle with reference to the housing of the figure 1 ) from the first surface 10 to the outer edge (according to the direction of travel of the vehicle and with respect to the longitudinal axis of the vehicle with reference to the housing of the figure 1 ) of the second surface 11. The portion 12 of the support essentially plays a role of cache support. A reinforcement rib 13 in a longitudinal median plane is provided. It provides a certain rigidity to the support while providing a direct thermal bridge between the support surface 10 of the light source and the surface 11 for discharging a portion of the heat produced by the light source. The surface 10 is remote from the surface 11 in the present example, but it should be noted that the surface 10 could be in direct connection with the surface 11, as is the case for the support illustrated in FIG. figure 1 . The surface 11 is intended to receive cooling fins. Preferably, the support is made of injected aluminum so that all its components are of the same part. The cooling fins may be integral with the support or a fin module may be attached, for example, by gluing on the surface 11.

Un module d'éclairage latéral pourvu du support de la figure 2 est illustré à la figure 3. On y observe la surface réfléchissante concave 6. Cette surface est segmentée en une série de facettes. Le support 7 est encastré dans une ouverture de la surface en question de sorte à ce que la surface 11 soit orientée vers l'arrière de la surface réfléchissante du module. La surface réfléchissante a une section grossièrement paraboloïdale avec un premier foyer correspondant approximativement à la source lumineuse. Les rayons émis par la source lumineuse vers la surface réfléchissante sont réfléchis par celle-ci dans une direction oblique par rapport à un axe longitudinal du véhicule de sorte à générer un faisceau oblique. La surface réfléchissante 6 est interrompue à sa partie avant par une surface striée 14 destinée à ménager un espace pour le module voisin (en particulier le module clignotant 3 à la figure 1) et à réduire l'éblouissement éventuel que pourrait provoquer le faisceau.A side lighting module with support for the figure 2 is illustrated at the figure 3 . We observe the concave reflecting surface 6. This surface is segmented into a series of facets. The support 7 is embedded in an opening of the surface in question so that the surface 11 is oriented towards the rear of the reflecting surface of the module. The reflective surface has a roughly paraboloidal section with a first focus corresponding approximately to the light source. The rays emitted by the light source to the reflecting surface are reflected by the light in an oblique direction relative to a longitudinal axis of the vehicle so as to generate an oblique beam. The reflecting surface 6 is interrupted at its front by a ridged surface 14 intended to provide a space for the neighboring module (in particular the flashing module 3 at the figure 1 ) and to reduce any glare that could be caused by the beam.

Un module d'éclairage latéral similaire au module de la figure 3 est illustré à la figure 4. Il s'en distingue en ce qu'il comprend un second exemple de réalisation du support de source lumineuse. Celui-ci comprend, tout comme celui de la figure 2, une première surface destinée à porter la source lumineuse et une deuxième surface formant un angle avec la première, préférentiellement de l'ordre de 90°, et destinée à assurer une fonction de dissipation de chaleur vers l'arrière du réflecteur. Le support comprend, au lieu de la nervure 13 du premier exemple à la figure 2, deux platines parallèles 13 et 13' reliant la première et la deuxième surface. Ces platines présentent une forme générale en section de disque, plus particulièrement en quart de disque. La forme de disque n'est pas limitative et l'ont pourrait avoir des forme elliptique ou une forme ovale. Les bords courbés de ces platines assurent la fonction esthétique et de cache du support de la source lumineuse.A side lighting module similar to the module of the figure 3 is illustrated at the figure 4 . It differs in that it comprises a second embodiment of the light source support. It includes, like that of the figure 2 , a first surface intended to carry the light source and a second surface forming an angle with the first, preferably of the order of 90 °, and intended to provide a heat dissipation function towards the rear of the reflector. The support comprises, instead of the rib 13 of the first example to the figure 2 two parallel plates 13 and 13 'connecting the first and the second surface. These plates have a general shape in disc section, more particularly in quarter disc. The disc shape is not limiting and may have an elliptical shape or an oval shape. The curved edges of these plates provide the aesthetic function and cover of the support of the light source.

Le support de source lumineuse selon l'invention consiste essentiellement en une surface de support d'une source lumineuse et en une partie de fixation destinée à être encastrée ou du moins introduite dans une ouverture d'un réflecteur, la surface de support formant un angle proche d'un angle droit avec la partie de fixation et la partie de fixation s'étendant essentiellement dans un demi-plan opposé à celui de la source lumineuse. Le support comprend également une partie comblant au moins en partie l'espace disponible entre la surface de support et la partie de fixation dans le demi-plan opposé à celui d'émission de la source lumineuse de sorte à assurer une triple fonction de pont thermique, de soutien mécanique et de cache esthétique.The light source support according to the invention consists essentially of a support surface of a light source and a fixing portion intended to be embedded or at least introduced into an opening of a reflector, the support surface forming an angle close to a right angle with the fixing portion and the fixing portion extending substantially in a half plane opposite to that of the light source. The support also comprises a part at least partially filling the space available between the support surface and the fixing part in the half-plane opposite to that of emission of the light source so as to ensure a triple function of thermal bridge , mechanical support and aesthetic cache.

Claims (14)

Support de source lumineuse, préférentiellement du type diode électroluminescente, pour dispositif d'éclairage et/ou de signalisation pour de véhicule automobile, comprenant : - une première surface (10) destinée à supporter la source lumineuse (8) ; - une deuxième surface (11) destinée à l'évacuation de chaleur ; - un corps reliant la première surface à la seconde surface ;
ledit support étant caractérisé en ce que la deuxième surface (11) s'étend dans un espace demi-plan délimité par le plan de la première surface (10) et opposé à la source lumineuse (8) et en ce que le corps comprend une partie arrondie (12 ; 13', 13") s'étendant entre un bord avant de la première surface et le bord de la deuxième surface opposé au plan de la première surface, ladite partie arrondie (12) du corps comprenant préférentiellement une surface faisant office de cache de la source lumineuse. Light source support, preferably of the electroluminescent diode type, for a lighting and / or signaling device for a motor vehicle, comprising: a first surface (10) for supporting the light source (8); a second surface (11) intended for the evacuation of heat; a body connecting the first surface to the second surface;
said support being characterized in that the second surface (11) extends in a half-plane space delimited by the plane of the first surface (10) and opposite to the light source (8) and in that the body comprises a rounded portion (12; 13 ', 13 ") extending between a leading edge of the first surface and the edge of the second surface opposite the plane of the first surface, said rounded portion (12) of the body preferably comprising a surface forming cache office of the light source. Support selon la revendication précédente, caractérisé en ce que la première et la deuxième surface (10, 11) sont contenues dans des plans sécants.Support according to the preceding claim, characterized in that the first and the second surface (10, 11) are contained in secant planes. Support selon la revendication précédente, caractérisé en ce que la première et la deuxième surface (10, 11) forment entre elles un angle compris entre 0° et 90°, préférentiellement environ 90°.Support according to the preceding claim, characterized in that the first and the second surface (10, 11) form between them an angle of between 0 ° and 90 °, preferably about 90 °. Support selon l'une des revendications précédentes, caractérisé en ce que la deuxième surface (11) comprend des ailettes de refroidissement.Support according to one of the preceding claims, characterized in that the second surface (11) comprises cooling fins. Support selon l'une des revendications précédentes, caractérisé en ce que la première surface (10) est essentiellement plane.Support according to one of the preceding claims, characterized in that the first surface (10) is substantially flat. Support selon l'une des revendications précédentes, caractérisé en ce que le corps, la première surface (10) et la deuxième surface (11) sont venus de matière, préférentiellement en aluminium injecté.Support according to one of the preceding claims, characterized in that the body, the first surface (10) and the second surface (11) are made of material, preferably injected aluminum. Support selon l'une des revendications précédentes, caractérisé en ce que le corps comprend une ou plusieurs platines (13', 13") reliant la première surface (10) à la deuxième surface (11) et présentant préférentiellement un bord courbé faisant préférentiellement office de cache de la source lumineuse.Support according to one of the preceding claims, characterized in that the body comprises one or more plates (13 ', 13 ") connecting the first surface (10) to the second surface (11) and preferably having a curved edge preferentially office of the light source. Support selon l'une des revendications 2, 3 et 6, caractérisé en ce que la partie arrondie est en forme de ruban courbé, préférentiellement se prolongeant au-delà de la deuxième surface.Support according to one of claims 2, 3 and 6, characterized in that the rounded portion is in the form of curved ribbon, preferably extending beyond the second surface. Support selon l'une des revendications précédentes, caractérisé en ce que les bords opposés respectifs des première et deuxième surfaces (10, 11) sont dans deux plans approximativement parallèles.Support according to one of the preceding claims, characterized in that the respective opposite edges of the first and second surfaces (10, 11) are in two approximately parallel planes. Module d'éclairage pour véhicule automobile, comprenant : - un réflecteur avec une surface réfléchissante concave (6); - une source lumineuse (8), préférentiellement du type diode électroluminescente, disposée à proximité de la surface réfléchissante concave (6) ; - un support (7) selon l'une des revendications précédentes supportant la source lumineuse (8) de sorte à ce que la première surface (10) supportant la source lumineuse (8) soit dirigée vers la surface réfléchissante concave (6). Lighting module for a motor vehicle, comprising: a reflector with a concave reflecting surface (6); a light source (8), preferably of the electroluminescent diode type, disposed near the concave reflecting surface (6); - a support (7) according to one of the preceding claims supporting the light source (8) so that the first surface (10) supporting the light source (8) is directed towards the concave reflecting surface (6). Module d'éclairage selon la revendication précédente, caractérisé en ce que la deuxième surface (11) est logée dans une ouverture de la surface réfléchissante (6), préférentiellement essentiellement à fleur de la surface réfléchissante à proximité de l'ouverture.Lighting module according to the preceding claim, characterized in that the second surface (11) is housed in an opening of the reflecting surface (6), preferably substantially flush with the reflecting surface near the opening. Module d'éclairage selon l'une des revendications 9 et 10, caractérisé en ce que la surface réfléchissante (6) a une forme telle que son axe optique croise le plan de la première surface (10) du support, la surface réfléchissante ayant préférentiellement une forme de section approximativement parabolique.Lighting module according to one of claims 9 and 10, characterized in that the reflecting surface (6) has a shape such that its optical axis crosses the plane of the first surface (10) of the support, the reflecting surface having preferentially an approximately parabolic sectional shape. Projecteur pour véhicule automobile, comprenant : - un module optique (2) avec son axe optique dirigé vers l'avant du véhicule, le module optique ayant une fonction d'éclairage de type code ou de type route ; - un module (5) selon l'une des revendications 9 à 11 disposé entre le le module optique (2) ayant une fonction d'éclairage de type code ou de type route et le clignotant (3) assurant une fonction d'éclairage latéral. Motor vehicle headlamp, comprising: an optical module (2) with its optical axis directed towards the front of the vehicle, the optical module having a lighting function of code or road type; - A module (5) according to one of claims 9 to 11 disposed between the optical module (2) having a code-type or road-type lighting function and the flasher (3) providing a side lighting function . Projecteur selon la revendication précédente, caractérisé en ce que le plan de la première surface (10) du support (7) de source lumineuse (8) est approximativement parallèle à l'axe optique du module optique (2) ayant une fonction d'éclairage de type code ou de type route .Projector according to the preceding claim, characterized in that the plane of the first surface (10) of the light source support (7) is approximately parallel to the optical axis of the optical module (2) having a lighting function code type or road type.
EP10159336A 2009-04-17 2010-04-08 Support for a light source such as a light-emitting diode Active EP2241798B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0952525A FR2944579B1 (en) 2009-04-17 2009-04-17 LIGHT SOURCE SUPPORT OF THE LIGHT EMITTING DIODE TYPE.

Publications (2)

Publication Number Publication Date
EP2241798A1 true EP2241798A1 (en) 2010-10-20
EP2241798B1 EP2241798B1 (en) 2012-05-23

Family

ID=41256765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10159336A Active EP2241798B1 (en) 2009-04-17 2010-04-08 Support for a light source such as a light-emitting diode

Country Status (3)

Country Link
EP (1) EP2241798B1 (en)
ES (1) ES2387953T3 (en)
FR (1) FR2944579B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021146A1 (en) * 2001-08-31 2003-03-13 Gentex Corporation Vehicle lamp assembly with heat sink
DE102007016439A1 (en) * 2007-04-05 2008-10-09 Volkswagen Ag LED light for motor vehicle, has retaining body designed and arranged in such that assembly surface for LED is formed on body at side that is turned away from light outlet opening, and fins formed on outer side of body
DE102007016442A1 (en) * 2007-04-05 2008-10-09 Volkswagen Ag LED lamp i.e. LED headlamp, for motor vehicle, has LED emitting light on reflector towards side that is turned away from light outlet opening, and heat accumulator integrated in retaining body i.e. design panel, on side of cover glass
US20090059594A1 (en) * 2007-08-31 2009-03-05 Ming-Feng Lin Heat dissipating apparatus for automotive LED lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021146A1 (en) * 2001-08-31 2003-03-13 Gentex Corporation Vehicle lamp assembly with heat sink
DE102007016439A1 (en) * 2007-04-05 2008-10-09 Volkswagen Ag LED light for motor vehicle, has retaining body designed and arranged in such that assembly surface for LED is formed on body at side that is turned away from light outlet opening, and fins formed on outer side of body
DE102007016442A1 (en) * 2007-04-05 2008-10-09 Volkswagen Ag LED lamp i.e. LED headlamp, for motor vehicle, has LED emitting light on reflector towards side that is turned away from light outlet opening, and heat accumulator integrated in retaining body i.e. design panel, on side of cover glass
US20090059594A1 (en) * 2007-08-31 2009-03-05 Ming-Feng Lin Heat dissipating apparatus for automotive LED lamp

Also Published As

Publication number Publication date
EP2241798B1 (en) 2012-05-23
ES2387953T3 (en) 2012-10-04
FR2944579B1 (en) 2012-05-25
FR2944579A1 (en) 2010-10-22

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