EP1828678A1 - Dispositif d'eclairage ayant au moins une diode electroluminescente et phare de vehicule - Google Patents

Dispositif d'eclairage ayant au moins une diode electroluminescente et phare de vehicule

Info

Publication number
EP1828678A1
EP1828678A1 EP05823447A EP05823447A EP1828678A1 EP 1828678 A1 EP1828678 A1 EP 1828678A1 EP 05823447 A EP05823447 A EP 05823447A EP 05823447 A EP05823447 A EP 05823447A EP 1828678 A1 EP1828678 A1 EP 1828678A1
Authority
EP
European Patent Office
Prior art keywords
lighting device
light
heat sink
emitting diode
illumination device
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
EP05823447A
Other languages
German (de)
English (en)
Other versions
EP1828678B1 (fr
Inventor
Gerhard Behr
Peter Helbig
Thomas Reiners
Ralf Vollmer
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1828678A1 publication Critical patent/EP1828678A1/fr
Application granted granted Critical
Publication of EP1828678B1 publication Critical patent/EP1828678B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21V29/76—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
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • 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
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • 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

  • Lighting device with at least one light emitting diode and vehicle headlights
  • the invention relates to a lighting device according to the preamble of patent claim 1 and a vehicle headlight with at least one such lighting device.
  • Such a lighting device is disclosed for example in EP-A 1 298 382.
  • This document describes a lighting device with a plurality of light emitting diodes, which are arranged on a heat sink, and an optic and an electrical module for operating the light emitting diodes.
  • This lighting device is intended for use in a vehicle and as a replacement for a conventional light bulb.
  • the illumination device has at least one light emitting diode and a heat sink for the at least one light emitting diode, wherein the heat sink has at least one recess in which a mounted with electrical components mounting plate is arranged.
  • the heat sink has at least one recess in which a mounted with electrical components mounting plate is arranged.
  • the heat sink of the illumination device according to the invention serves both for cooling the light-emitting diodes arranged on it and for cooling the electrical components required for the operation of the light-emitting diodes, which are arranged on the mounting plate.
  • the arrangement of the electrical components on a mounting plate, for example a lead frame, has the advantage that the assembly plate fitted in this way can be mounted on the heat sink as a structural unit.
  • the heat sink in order to increase its surface to optimize the cooling effect cooling ribs, wherein the recess for the assembled with the electrical components mounting plate is arranged in the region of the cooling fins.
  • This ensures a greater spatial distance between the two heat sources on the heat sink, namely the light-emitting diodes and the electrical components.
  • the light-emitting diodes are not heated by the heat generated by the electrical components.
  • one of the cooling fins is provided with the at least one recess for the mounting plate equipped with the electrical components, or one of the cooling fins is replaced by the mounting plate fitted with the electrical components.
  • the mounting plate is thus aligned parallel between two cooling fins and thereby the cooling of the mounted on the mounting plate electrical components is optimized, in particular when a cooling gas flow is passed between the cooling fins by means of a blower.
  • the electrical connection of the illumination device is also arranged on the mounting plate in order to ensure a compact construction.
  • the electrical connection is the Illuminating device arranged in a further recess of the heat sink to absorb the mechanical stress caused by the use of the electrical contact through the heat sink and not to transfer to the underlying mounting plate with the electrical components mounted thereon.
  • the heat sink of the lighting device according to the invention is provided with means for the correct position mounting of the lighting device in a vehicle headlight.
  • an adjustment of the at least one light-emitting diode arranged on the heat sink relative to the optical system of the vehicle headlight is made possible because the at least one light-emitting diode is preferably arranged and aligned in a defined position and orientation with respect to the heat sink on the heat sink, as for example in the German patent application with the official file number 10 2004 052 687.7.
  • the abovementioned means for the correct installation of the lighting device are preferably formed as part of a bayonet closure between the lighting device and the vehicle headlight.
  • the bayonet lock ensures a secure fixation of the lighting device in the vehicle headlight due to the necessary plug-in rotary movement for locking.
  • the stops for the aforementioned plug-and-turn movement ensure the correct orientation of the at least one light emitting diode with respect to the vehicle headlight reflector.
  • the illumination device is located on the bayonet closure in contact with the vehicle headlight reflector, so that this also contributes to heat dissipation.
  • the electrical connection of the illumination device has at least one contact web extending perpendicular to the axis of rotation of the bayonet closure, so that by the rotational movement when locking or unlocking the bayonet closure of the electrical contact between the at least one contact web and its mating contact is made or released on the vehicle headlight.
  • the electrical contacting of the illumination device in the vehicle registration device takes place. It is therefore not an additional handle, such as Example plugging a plug, etc., required for electrical contacting of the lighting device.
  • the illumination device according to the invention is preferably provided for use as a light source in a headlight of a motor vehicle.
  • a plurality of the illumination devices according to the invention are arranged, each of the illumination devices interacting with a specific part of the optical system of the vehicle headlight, by switching on a specific combination of these arranged in the vehicle headlights lighting devices corresponding light distributions, such as the light distribution for parking lights, low beam, To produce high beam or fog light.
  • Figure 1 is a plan view of the front of aumpsscinoplasty according to the first embodiment of the invention
  • Figure 2 is a plan view of the back of the illumination device according to the first embodiment of the invention
  • Figure 3 is a representation of the mounting hole in the vehicle headlamp, which is tuned to the embodiments shown in Figures 1, 2, 5 and 6
  • Figure 4 is a side view of a lighting device according to the second embodiment of the invention.
  • Figure 5 is a side view of a lighting device according to the third embodiment of the invention
  • Figure 6 is a plan view of the back of the illumination device according to the third embodiment of the invention
  • FIGs 1 and 2 the illumination device according to the first embodiment is shown.
  • This lighting device has a heat sink 1 with a circular disk-shaped mounting surface 10 and parallel cooling fins 11, 12, 13, 14, 15, 16, which extend perpendicular to the mounting surface 10.
  • the heat sink 1 is formed as a one-piece die-cast aluminum part.
  • the outer contour of the heat sink 1 essentially corresponds to that of a circular cylinder, apart from the cavities between the cooling fins 11 to 16 and the locking straps 17, 18, 19, which are part of a bayonet closure between the illumination device and a vehicle headlight.
  • the three locking tabs 17, 18, 19 are arranged equidistantly along the circumference of the circular cylindrical mounting surface 10 at a distance of 120 degrees. They are directed radially outward.
  • the two locking tabs 17, 18 have the same shape, but are mirror-symmetrically arranged with respect to the diameter of the mounting surface 10, which extends centrally through the third locking tab 19.
  • the locking tab 19 has a different shape than the first 17 and second locking tab 18 to ensure a clear orientation and installation position of the illumination device in the vehicle headlight.
  • the two outer cooling fins 1 1 and 16 have on their outer surface a profile I Ia or 16a, in order to ensure a better grip when operating the bayonet closure.
  • the mounting surface 10 has a recess 102 to provide space for mounting a lateral, acting perpendicular to the axis of rotation of the bayonet fitting pressure spring 103.
  • the pressure spring 103 is disposed between the locking tab 19 and the spring ring 101. It is covered in the illustration of Figure 1 by the locking tab 19.
  • a support plate 2 On the mounting surface 10 of the heat sink 1 is a support plate 2, for example, a so-called metal core board, fixed for a total of five LED chips 3 (also called LED chips).
  • the metal template 2 is a me- tallplatte, which is provided with an electrical insulation, such as ceramic.
  • On the electrical insulation of the metal core board 2 printed conductors 21 are arranged for electrical contacting of the LED chips 3.
  • the support plate or metal core plate 2 ensures electrical insulation between the metallic heat sink 1 the LED chips 3.
  • the support plate 2 is mechanically, for example, by clamping fit in a recess of the heat sink 1 or by means of a snap connection or with the aid of an adhesive on the mounting surface 10 of Heatsink 1 anchored.
  • two holes in the mounting surface 10 may be mounted, in each of which engages a properly shaped pin on the underside of the support plate 2. These holes may also define the orientation and embossing of the carrier plate 2 with respect to the locking tabs 17-19.
  • the five light-emitting diode chips 3 are arranged in a row on the carrier plate 2 and surrounded by the walls of a so-called potting trough 4, so that the row consisting of the five light-emitting diode chips 3 is arranged at the bottom of the potting trough 4.
  • the Vergusswanne 4 is partially filled with a translucent, the light-emitting diode chips 3 covering potting compound, for example, contains two different phosphors to convert the wavelength of a portion of the generated by the LED chips 3 electromagnetic radiation, so that the illumination device emits white light during their operation. Such phosphors are described, for example, in WO 98/12757.
  • the light emitting diode chips 3 facing surface 4a of the walls of Vergusswanne 4 are formed light-reflecting.
  • the light-emitting diode chips 3 are, for example, thin-film light-emitting diode chips whose basic principle is described, for example, in the publication I. Schnitzer et al., Appl. Phys. Lett. 63 (16), 18 October 1993, 2174-2176.
  • the carrier plate 2 has four bores 22, in each of which a pin 52 of a primary optics 5 (illustrated in FIG. 4) tuned to match it, or a holder for the primary optics 5 engages.
  • a pin 52 of a primary optics 5 illustrated in FIG. 4
  • the primary tik 5 fixed to the support plate 2 and their installation position and orientation with respect to the support plate 2 and thus also with respect to the locking tabs 17 to 19 fixed.
  • the holes 22 are fittingly arranged over corresponding holes in the mounting surface 10 of the heat sink 1, so that the pins 52 of the primary optics 5 are passed through the holes 22 of the support plate 2 and engage in the aforementioned holes in the heat sink 1.
  • the carrier plate 2 is also fixed and aligned on the heat sink 1 by means of the dowel pins 52.
  • no separate means for mounting on the mounting surface 10 of the heat sink 1 are required for the support plate 2.
  • one or more spacers may be provided which the depth of penetration of the pins 52 in the bores 22
  • Primary optics is a composite optical concentrator that is similar to the optical concentrator 5 of the embodiment of the invention depicted in Figure 4.
  • This optical concentrator 5 engages the potting tub 4 and is optically on, for example, by means of Canada balsam the light-emitting diode chip 3.
  • the optical concentrator 5 concentrates the light generated by the light-emitting diode chips 3 so that it emerges from the front side 51 of the concentrator 5 facing away from the light-emitting diode chips 3 with reduced divergence compound compound parabolic concentrator (CPC) or compound elliptical concentrator (Compound Elly- tic Concentrator, CEC) or compound Hyperbolic Concentrator (CHC).
  • CPC divergence compound compound parabolic concentrator
  • CEC Compound Elly- tic Concentrator
  • CHC compound Hyperbolic Concentrator
  • the primary optics 5 are arranged with respect to the LED chips 3 in a well-defined position and orientation on the heat sink 1 or on the carrier plate 2.
  • the primary optics 5 is matched to the optics of the vehicle headlight (secondary optics).
  • the electrical components required for the operation of the LED chips 3 are arranged on a mounting plate 6 designed as a lead frame.
  • the assembled with the aforementioned electrical components (not shown) mounting plate 6 is arranged a matching recess of the central fin 14 and fixed.
  • the electrical components mounted on the mounting plate 6 protrude into the space between the mounting plate 6 and the adjacent cooling fins 13 or / and 15.
  • On the mounting plate 6 is also the electrical connection 7 of the lighting
  • the electrical terminal 7 is formed as a socket with contact pins 71, which is provided for receiving a connector adapted thereto.
  • the arranged on the mounting plate 6 electrical components are supplied with electrical energy.
  • the consisting of the aforementioned electrical components power supply circuit of the LED chips 3 is by means of O power supply lines (not shown), which are passed through the opening 100 in the mounting surface 10 and contacted with the tracks 21 on the support plate 2, electrically connected to the LED chips 3.
  • FIG. 3 diagrammatically shows a holder 30 for the exemplary embodiments of the illumination device according to the invention shown in FIGS. 1, 2, 5 and 6
  • This holder 30 is part of the vehicle headlight and is located, for example, on the rear side of the vehicle headlight reflector remote from the light exit opening of the vehicle headlamp reflector.
  • a holder 30 with the mounting opening 300 shown in FIG. 3 can be provided on the rear side of the aforementioned reflector.
  • opening 300 is provided with matching recesses 301, 302, 303 for the locking tabs 17, 18, 19 of the lighting device.
  • a stop 304 for the locking tab 19 and a ramp 305 are further arranged.
  • the mounting opening 300 with the recesses 301 to 303 and the stop 304 and the ramp 305 forms together with the locking
  • a bayonet between the illumination device and the holder 30 of the vehicle headlight For actuating the bayonet closure, the illumination device with its mounting surface 10, which forms the projecting into the reflector of the vehicle headlight front of the illumination device, attached to the holder 30, wherein the locking
  • the illumination device is rotated relative to the section 30 by approximately one quarter turn, so that the locking tab 19 slides over the ramp 305 and bears against the stop 304.
  • the stopper 304 prevents further rotational movement in the screwing direction.
  • the ramp 305 complicates a rotational movement in the direction of rotation and prevents an automatic unlocking of the bayonet lock.
  • the pressure spring 103 is in the region between the stopper 304 and the ramp 305 at the edge of the mounting hole 300 with a press fit. Due to the spring action of the pressure spring 103, the illumination device is pressed against the obliquely extending edge regions 306, 307 of the mounting opening, so that the illumination device is supported on three sections of the edge of the mounting opening 300 and thus secured against movements in the flange plane.
  • the holder 30 or the edge of the mounting opening 300 is arranged in the locked state of the bayonet lock with a press fit between the locking tabs 17 to 19 and the spring ring 101.
  • the three locking tabs 17 to 19 lie in a common plane, which forms a reference plane for the alignment of the LED chips 3 and the primary optics 5 with respect to the reflector of the vehicle headlight. That is, the orientation of the LED chips 3 and the primary optics 5 on the heat sink 1 ensures in conjunction with the Bayonettverschi us described above between the holder 30 and the lighting device according to the invention a clearly defined mounting position of the light source or light sources in the vehicle headlight.
  • FIG. 4 shows a lighting device according to a second exemplary embodiment of the invention.
  • This illumination device has a heat sink 400 with a circular disk-shaped mounting surface 401 and parallel cooling fins 402, which extend perpendicular to the mounting surface 401.
  • the heat sink 400 is formed as a one-piece die-cast aluminum part.
  • the outer contour of the heat sink 400 substantially corresponds to that of a circular cylinder, apart from the cavities between the cooling fins 402.
  • the mounting surface 401 three recesses 403 in the surface of the heat sink 400 at an angular distance of 120 degrees. These recesses 403 are part of a bayonet closure between the illumination device and the vehicle headlight, in which the illumination device is used.
  • the carrier plates 404, 405, 406 are fixed for each five LED chips (also called LED chips).
  • the carrier plates 404, 405, 406 are arranged in a row, so that a total of fifteen light-emitting diode chips are arranged in a row on the front side 401 of the heat sink 400.
  • the two outer support plates 404, 406 are each mounted on a slope of the mounting surface 401 of the heat sink 400.
  • the light-emitting diode chips are, as described in the first exemplary embodiment (FIG. 1), arranged in a casting trough 407 and are covered by the primary optics 5 in the representation of FIG.
  • the primary optics 5 has a plurality of molded pins or dowel pins 52, by means of which it is anchored in holes in the heat sink 400.
  • the primary optics 5 engages in the Vergusswannen 407, is optically coupled to the arranged in the Vergusswannen 407 LED chips and their spatial position and orientation is adjusted by means of the pins or dowel pins 52 with respect to the support plates 404-406.
  • the light generated by the light emitting diodes exits the Lichtaustrittsöfmung 51 of the primary optics 5 with reduced divergence.
  • the electrical components for operating the light-emitting diode chips are mounted on a mounting plate 408 designed as a lead frame, which is arranged in a recess of the heat sink 400 in the region of the mounting surface 401.
  • the mounting plate 408 covers the aforementioned recess in the heat sink 400. It is practically designed as a cover for this recess.
  • the electrical components are mounted on the underside of the mounting plate 408, so that the electrical components protrude into the recess. In the illustration of Figure 4, the top of the mounting plate 408 is visible. The depth of the aforementioned recess is matched to the height of the mounted on the mounting board 408 electrical components.
  • a second recess on the edge of the mounting surface 401 designed as a socket 409 electrical connection of the lighting device is arranged. Via the contact pins of the socket 409, the electrical components mounted on the mounting plate 408 are supplied with electrical energy. Those of the electrical components on the mounting plate 408 formed circuit serves to power the LED chips.
  • electrical contacts 410 are provided for contacting the light-emitting diode chips arranged on the support plates 404 to 406.
  • the primary optics 5 of the illumination device is matched to the downstream secondary optics of the vehicle headlight.
  • the secondary optics can be a reflector, for example a free-form surface reflector, an optical lens system or a combination of an optical lens system with a reflector.
  • FIGS. 5 and 6 show a third exemplary embodiment of the lighting device according to the invention.
  • This lighting device is largely identical to the lighting device according to the first embodiment, which is shown in Figures 1 and 2. Therefore, the same reference numerals are used in the corresponding figures 1 and 2 and 5 and 6 for identical parts of the two embodiments. For the description of these parts, reference is made to the description of the corresponding parts of the first embodiment.
  • the illumination device according to the third embodiment differs from that according to the first embodiment only by the different design of the electrical connection 7 '.
  • the electrical connection T of the lighting device is mounted on the mounting plate 6.
  • colored light-emitting light-emitting diodes can also be used in order to use the lighting device as a light source in rear lights of the vehicle, for example as a brake light, tail light or flashing light.
EP05823447A 2004-12-22 2005-12-01 Dispositif d'eclairage ayant au moins une diode electroluminescente et phare de vehicule Active EP1828678B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062989A DE102004062989A1 (de) 2004-12-22 2004-12-22 Beleuchtungseinrichtung mit mindestens einer Leuchtdiode und Fahrzeugscheinwerfer
PCT/DE2005/002171 WO2006066531A1 (fr) 2004-12-22 2005-12-01 Dispositif d'eclairage ayant au moins une diode electroluminescente et phare de vehicule

Publications (2)

Publication Number Publication Date
EP1828678A1 true EP1828678A1 (fr) 2007-09-05
EP1828678B1 EP1828678B1 (fr) 2010-03-31

Family

ID=35923013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05823447A Active EP1828678B1 (fr) 2004-12-22 2005-12-01 Dispositif d'eclairage ayant au moins une diode electroluminescente et phare de vehicule

Country Status (9)

Country Link
US (1) US7806562B2 (fr)
EP (1) EP1828678B1 (fr)
JP (1) JP4608553B2 (fr)
CN (1) CN100572906C (fr)
AT (1) ATE462932T1 (fr)
DE (2) DE102004062989A1 (fr)
ES (1) ES2342549T3 (fr)
TW (1) TWI388767B (fr)
WO (1) WO2006066531A1 (fr)

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DE102004062989A1 (de) 2006-07-06
CN100572906C (zh) 2009-12-23
US7806562B2 (en) 2010-10-05
CN101087977A (zh) 2007-12-12
ATE462932T1 (de) 2010-04-15
TW200639353A (en) 2006-11-16
TWI388767B (zh) 2013-03-11
US20080130308A1 (en) 2008-06-05
DE502005009336D1 (de) 2010-05-12
ES2342549T3 (es) 2010-07-08

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