EP1749170B1 - Phare pour vehicule automobile - Google Patents

Phare pour vehicule automobile Download PDF

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Publication number
EP1749170B1
EP1749170B1 EP05740258A EP05740258A EP1749170B1 EP 1749170 B1 EP1749170 B1 EP 1749170B1 EP 05740258 A EP05740258 A EP 05740258A EP 05740258 A EP05740258 A EP 05740258A EP 1749170 B1 EP1749170 B1 EP 1749170B1
Authority
EP
European Patent Office
Prior art keywords
heat
conducting means
air flow
light
emitting diode
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.)
Expired - Fee Related
Application number
EP05740258A
Other languages
German (de)
English (en)
Other versions
EP1749170A1 (fr
Inventor
Guido Buthe
Matthias Kalwa
Ulrich KÖHLER
Erik Woldt
Karsten Eichhorn
Sascha Dr. Nolte
Winfried Sprenger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1749170A1 publication Critical patent/EP1749170A1/fr
Application granted granted Critical
Publication of EP1749170B1 publication Critical patent/EP1749170B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • 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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices
    • F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
    • 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
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21S45/60—Heating of lighting devices, e.g. for demisting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • a headlamp with a light-emitting diode arrangement is for example from the German utility model DE 201 15 772 U1 known.
  • an array of LEDs replaced a conventional halogen lamp.
  • the light-emitting diode array is provided with heat conducting means, for example a heat sink, which can dissipate the heat of the light emitting diodes in a suitable manner.
  • white light emitting diodes produce no infrared radiation, which is generated in conventional headlamps by the halogen light source and can be used to defrost or defrost the headlight cover disc.
  • document DE 102 27720 A1 discloses a headlamp according to the preamble of claim 1.
  • the headlight cover plate can be kept ice and fog free.
  • a headlamp with the features of claim 1.
  • the heat conducting means is equipped with at least one air guide, which is adapted to direct the outgoing air flow in a direction parallel to the preferred direction of emission of the emitted light, the heat generated by the light-emitting diodes instead of the infrared radiation emitted by conventional halogen lamps to De-icing the headlight cover disc exploited, but essentially no structural changes must be made to the heat, analogous to the infrared radiation of a halogen lamp, always to transport in the direction of the preferred direction of radiation.
  • the heat conducting means at least partially has a cylindrical shape, wherein a core is provided, from which cooling fins extend in the radial direction, wherein the interstices of the cooling fins form shipsleitkanäle.
  • a configuration of the heat conduction is compact and is particularly advantageously designed to form a heated outgoing air flow, which is aligned parallel to the preferred emission direction of the light emitting diode array.
  • the cooling fins in the longitudinal direction of the heat conducting, wherein the core has a recess which is suitable for receiving the light emitting diode array.
  • the heat-conducting is also used as a receiving means for the light-emitting diode array, whereby a very compact embodiment of the headlight results.
  • the core has a conical shape. Accordingly, the heat-conducting medium can be flowed in from the pointed side of the core, whereby the streamlined shape of the core results in an advantageous low-pressure flow behavior.
  • the heat conducting means is rotatable about its longitudinal axis and at least partially has a semi-cylindrical shape, wherein the cooling ribs extend in the circumferential direction and the core has a recess which is suitable for receiving the light emitting diode array.
  • Such an arrangement is particularly suitable for example rotatable embodiment of the combination of heat sink and light emitting diode array. If, for example, the heat conducting means is rotated about its longitudinal axis, the inflow profile of the heat conducting means does not change significantly, since the cooling fins are arranged in the circumferential direction or in the direction of rotation. In this way, a Kurven Eisenweinwerfer or the tilt adjustment of a headlamp can be realized with simultaneous advantageous air flow behavior.
  • the heat conducting means has a cuboid shape, the heat conducting means having a cover plate departing from the cooling fins, whose interspaces form air guide channels for conducting the outgoing air flow, wherein the cover plate is suitable for receiving the light emitting diode arrangement , wherein an optical deflection means is provided, which is adapted to the light generated by the light emitting diode assembly in one direction to divert parallel to the outgoing airflow.
  • a cuboid heat sink is used, which is easy to edit and inexpensive available in large quantities as a semi-finished product.
  • the heat conducting means is enclosed by a planteosargekoruse, which has holding webs which are suitable for receiving a lens or a raster in front of the light emitting diode array.
  • a planteosargekoruse which has holding webs which are suitable for receiving a lens or a raster in front of the light emitting diode array.
  • the recess is equipped with a reflector and / or has a reflective surface. As a result, a good light output in the direction of the preferred emission direction is achieved.
  • a heat exchanger is provided which is adapted to selectively supply heat to the air flow or to withdraw.
  • a heat exchanger is provided which is adapted to selectively supply heat to the air flow or to withdraw.
  • the heat conducting means is suitable for directing the outgoing air flow in the direction of the preferred emission direction of the emitted light.
  • the headlight is equipped with a further heat conducting means which is suitable for directing an outgoing air flow against the preferred emission direction of the emitted light. Accordingly, both a supply of air and air removal from the light space can be achieved by a combination of such heat-conducting elements.
  • a combination is conceivable, for example, in a headlight that is equipped with a dipped beam and a fog light and / or separate high beam.
  • the air flow in the manner according to the invention can be dissipated, for example, via the heat conducting means of the fog light.
  • the heat source as such is not adjustable, because the main task of the lighting device is still to act as a light source.
  • the bulbs can not be sufficiently cooled, for example, or too long to provide sufficient heat to de-ice the headlight cover disc available.
  • An inventive headlight 1 essentially comprises a cylindrical heat conducting means housing 8, in which a cooling body 3 is accommodated with a light emitting diode arrangement 2.
  • the skilletleitschgepian 8 is provided on one side with support webs 16, which serve as a receptacle for a lens 17 or a shader, wherein the light of the LED array 2 is projected via the lens 17 onto a headlight cover lens.
  • the heat conducting means 3 itself has a cylindrical shape with a solid core 13, wherein cooling fins 10 extend in the radial direction along a longitudinal axis 11 of the heat conducting means 3 from the solid core 13 and in this embodiment form a number of air guide channels 12 together with the heat conducting means housing 8 , which are aligned substantially in the direction of the lens 17 and the headlight cover disk.
  • the air ducts 12 are also formed when no sauceleitffengephase 8 is provided.
  • the heat conducting means 3 is designed rotationally symmetrical about its longitudinal axis 11.
  • the heat-conducting means 3 has a conical recess 14 within the solid core 13, wherein the conical recess 14 can continue into the region of the cooling ribs 10.
  • the optical axis of the light emitting diode arrangement 2 coincides with the longitudinal axis 11 of the heat conducting means 3.
  • FIG Fig. 2 Another embodiment of a heat conducting means 20 is shown in FIG Fig. 2 shown.
  • the heat conducting means 20 used here has essentially a semi-cylindrical shape, wherein the heat conducting means 20 likewise comprises a solid core 24, around which the cooling ribs 23 are arranged radially.
  • the cooling fins 23 are in contrast to the heat sink 3 from Fig. 1 aligned in the circumferential direction and not in the longitudinal direction.
  • the cooling fins 23 form air channels 25, which can be flown by an incoming air flow 4, and leave the heat conducting means 20 in an outgoing air flow 5, which is substantially aligned with the headlight cover disc.
  • a recess 22 for receiving the light-emitting diode arrangement 2 is provided, whose optical axis is also aligned in the direction of the headlight cover disc.
  • FIG. 3 a further embodiment of a heat conducting 30 is shown.
  • the heat-conducting agent 30 used here is essentially the same as in FIG Fig. 1 shown heat conduction means 3 and comprises a solid core 31 which is radially equipped with cooling fins 32 extending in the longitudinal direction of the heat conducting 30 and form Heilleitkanäle 33.
  • the solid core 31 has a conical shape, wherein the incoming air flow flows to the core 31 from the acute side, is passed through the Heilleitkanäle 25 between the cooling fins 32 and the heat conducting 30 as outgoing air flow 5 in the direction of Headlight terminus leaves.
  • a recess 34 is provided in the middle of the heat-conducting means 30, which serves as a receptacle for the light-emitting diode arrangement 2.
  • FIG Fig. 4 Another alternative embodiment of a heat conducting means 40 is shown in FIG Fig. 4 shown.
  • the heat conducting means 40 has a substantially cuboidal shape and is provided with a cover plate 43. From the cover plate 43, cooling ribs 41 extend, wherein the intermediate spaces of the cooling ribs 41 form air guide channels 42. Furthermore, it is provided to arrange the light-emitting diode arrangement 2 on the head side of the cover plate 43 and to use a mirror 44 or a prism, so that the light of the light-emitting diode arrangement 2 can be deflected in the direction of the outgoing air flow 5, so that both the light of the light-emitting diode arrangement 2, as Also, the heated air flow 5 can be aligned with the headlight cover disc.
  • the heat conducting means 20, 30, 40 according to the Fig. 2 to 4 swivel designed. It is Furthermore provided that the respective heat conducting means 20, 30, 40 is at least partially enclosed by the housing 9, wherein the housing 9 each having an opening 15 through which the incoming air flow 4 can flow into the air ducts 12. Such a configuration of the air supply, the cooling fin surface can be largely independent of the respective pivot angle of the heat conducting 3, 20, 30, 40 are flown. Such advantageous flow is supported, for example, by a heat conducting means 20 Fig. 2 in which the orientation of the cooling fins 23 with respect to the incoming air stream 4 does not change despite a pivoting of the heat conducting means 20 about the longitudinal axis. Alternatively, for example, as in Fig.
  • a streamlined configuration of the heat conducting means 30 may be provided in order to ensure a pressure loss-free as possible air flow.
  • All embodiments of the heat conducting means 3, 20, 30, 40 are ultimately common in that the outgoing air flow 5 can be directed in a direction parallel to the preferred emission direction 18 of the light of the light emitting diode arrangement 2. In the embodiments shown here, this is done in the direction of the preferred emission direction. However, it is also conceivable that the outgoing air flow is directed counter to the emission direction 18, for example, to divert the air from the clearance with the use of a separate fog lamp with a heat transfer medium 3, 20, 30, 40 in the same headlight 1. Also by the particular Provision of the supply of the air flow ensured that despite a swing of the heat conduction always the same fin surface is flowing.
  • the recesses 14, 22, 34 are equipped with a reflector and / or a reflective surface, so that the light output in the direction of the headlight cover disc can be improved.
  • alternative geometric shapes are taking place the cylindrical or semi-cylindrical shape of the heat conducting 3, 20, 30, 40 conceivable, as long as this the purpose of the invention can be met.
  • a non-inventive headlamp 50 essentially comprises a headlamp housing 60 with a translucent headlamp lens 51, in which a lighting assembly 61 is housed.
  • the light assembly 61 essentially comprises a light-emitting diode arrangement 54 with a fan housing 52.
  • a lens 53 is mounted, which is held by a frame 55.
  • a heat sink 56 is provided, which projects into the fan housing 52 and is flown by a fan 58 with cooling air.
  • the heat conducting means on cooling fins 62 which extend in the direction of flow along the heat conducting 56.
  • an airflow guide 57 in the form of a housing wall can be provided, with which at least part of the airflow generated by the fan 58 is supplied to the heat sink 56.
  • a heat exchanger 63 may be provided for preheating or for cooling the circulating air stream 59, for example, when the heat conducting means 56 has not yet reached its target temperature, or the air temperature is too high to ensure a suitable cooling of the heat conducting.
  • a circulating air stream 59 is shown. It is also conceivable air flow, which is led out at any point from the headlamp, as long as the heat exchanger 63 can act in the manner described on the air flow.

Claims (11)

  1. - Projecteur (1) pour véhicules automobiles, comprenant
    - un ensemble de diodes électroluminescentes (2) avec une direction préférée du rayonnement (18) de la lumière émise,
    - un moyen de conduction thermique (3, 20, 30, 40) pour l'échange de la chaleur entre l'ensemble de diodes électroluminescentes (2) et un courant d'air (4, 5), le moyen de conduction thermique pouvant être entré par un courant d'air arrivant (4) et pouvant être sorti par un courant d'air partant (5),
    - une glace extérieure translucide du projecteur qui est disposée en direction préférée du rayonnement (18) de la lumière,
    - le moyen de conduction thermique (3, 20, 30, 40) étant équipé avec au moins un moyen de conduction d'air qui est approprié à guider le courant d'air partant (5) dans une direction parallèle à la direction préférée du rayonnement (18) de la lumière émise,
    caractérisé en ce qu'
    un boîtier (9) est prévu pour le logement du moyen de conduction thermique (3, 20, 30, 40) qui forme un logement pivotant pour le moyen de conduction thermique dans lequel le moyen de conduction thermique est logé de manière pivotante, le boîtier (9) entourant le moyen de conduction thermique au moins partiellement et le boîtier (9) étant équipé d'une ouverture (15) qui est appropriée à faire entrer le courant d'air arrivant (4) au moyen de conduction thermique.
  2. - Projecteur selon la revendication 1, caractérisé en ce que le moyen de conduction d'air (3, 20, 30, 40) présente au moins partiellement une forme cylindrique, un noyau (13, 24, 31) étant prévu duquel des ailettes de refroidissement (10, 23, 32) s'étendent en direction radiale, les espaces entre les ailettes de refroidissement forment des conduits d'air (12, 25, 33) en tant que moyen de conduction d'air.
  3. - Projecteur selon la revendication 2, caractérisé en ce que les ailettes de refroidissement (10, 23, 32) s'étendent en direction longitudinale du moyen de conduction thermique (3, 20, 30, 40), le noyau (13, 24, 31) disposant d'une découpe (14, 22, 34) qui est appropriée à loger l'ensemble des diodes électroluminescentes (2).
  4. - Projecteur selon la revendication 2 ou 3, caractérisé en ce que le noyau (31) présente une forme conique.
  5. - Projecteur selon la revendication 2, caractérisé en ce que le moyen de conduction thermique (20) est orientable autour de son axe longitudinal et présente au moins partiellement une forme demi-cylindrique, les ailettes de refroidissement (23) s'étendant en direction périphérique et le noyau (24) disposant d'une découpe qui est appropriée à loger l'ensemble des diodes électroluminescentes (2).
  6. - Projecteur selon la revendication 1, caractérisé en ce que le moyen de conduction thermique (40) présente une forme parallélépipédique, le moyen de conduction thermique (40) présentant un couvercle (43) duquel sortent des ailettes de refroidissement (41) dont les espaces forment des conduits d'air (42) pour guider le courant d'air partant (5), le couvercle (43) étant approprié à loger l'ensemble des diodes électroluminescentes (2), un moyen de déviation optique étant prévu qui est approprié à dévier la lumière produite par l'ensemble des diodes électroluminescentes (2) dans la direction du courant d'air partant (5).
  7. - Projecteur selon l'une des revendications 1 à 6, caractérisé en ce que le moyen de conduction thermique (3, 20, 30, 40) est entouré d'un boîtier du moyen de conduction thermique (8) qui présente des supports d'appui (16) qui sont appropriés à loger une lentille (17) ou un occulteur devant l'ensemble des diodes électroluminescentes (2).
  8. - Projecteur selon l'une des revendications 3 à 7, caractérisé en ce que la découpe (14, 22, 34) est équipée d'un réflecteur et/ou présente une surface réfléchissante.
  9. - Projecteur selon l'une des revendications 1 à 8, caractérisé en ce qu'un échangeur thermique (63) est prévu qui est approprié à faire au choix venir ou partir la chaleur au courant d'air (4, 5).
  10. - Projecteur selon l'une des revendications 1 à 9, caractérisé en ce que le moyen de conduction thermique (3, 20, 30, 40) est approprié à guider le courant d'air partant (5) en direction de la direction préférée du rayonnement (18) de la lumière émise.
  11. - Projecteur selon l'une des revendications 1 à 10, caractérisé en ce que le projecteur est équipé d'un autre moyen de conduction thermique (3, 20, 30, 40) qui est approprié à guider le courant d'air partant (5) en direction opposée à la direction préférée du rayonnement (18) de la lumière émise.
EP05740258A 2004-05-25 2005-05-12 Phare pour vehicule automobile Expired - Fee Related EP1749170B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025623A DE102004025623A1 (de) 2004-05-25 2004-05-25 Scheinwerfer für ein Kraftfahrzeug
PCT/EP2005/052157 WO2005116520A1 (fr) 2004-05-25 2005-05-12 Phare pour vehicule automobile

Publications (2)

Publication Number Publication Date
EP1749170A1 EP1749170A1 (fr) 2007-02-07
EP1749170B1 true EP1749170B1 (fr) 2012-04-11

Family

ID=34967263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05740258A Expired - Fee Related EP1749170B1 (fr) 2004-05-25 2005-05-12 Phare pour vehicule automobile

Country Status (4)

Country Link
EP (1) EP1749170B1 (fr)
AT (1) ATE553334T1 (fr)
DE (1) DE102004025623A1 (fr)
WO (1) WO2005116520A1 (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051248B4 (de) * 2005-10-26 2008-06-26 Audi Ag Lichteinheit, insbesondere für ein Kraftfahrzeug
DE102005060736B4 (de) * 2005-12-16 2008-11-20 Odelo Gmbh Scheinwerfer mit Kondensatabscheider
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EP1749170A1 (fr) 2007-02-07
DE102004025623A1 (de) 2005-12-15
ATE553334T1 (de) 2012-04-15

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