EP1617132A2 - Steg zur Befestigung einer Leuchtdiode - Google Patents

Steg zur Befestigung einer Leuchtdiode Download PDF

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Publication number
EP1617132A2
EP1617132A2 EP05015270A EP05015270A EP1617132A2 EP 1617132 A2 EP1617132 A2 EP 1617132A2 EP 05015270 A EP05015270 A EP 05015270A EP 05015270 A EP05015270 A EP 05015270A EP 1617132 A2 EP1617132 A2 EP 1617132A2
Authority
EP
European Patent Office
Prior art keywords
reflector
light source
post
led light
lamp assembly
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.)
Withdrawn
Application number
EP05015270A
Other languages
English (en)
French (fr)
Other versions
EP1617132A3 (de
Inventor
Charles Coushaine
Michael Tucker
Thomas Tessnow
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 Sylvania Inc
Original Assignee
Osram Sylvania Inc
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
Priority claimed from US10/995,855 external-priority patent/US20060109654A1/en
Application filed by Osram Sylvania Inc filed Critical Osram Sylvania Inc
Publication of EP1617132A2 publication Critical patent/EP1617132A2/de
Publication of EP1617132A3 publication Critical patent/EP1617132A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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]
    • 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

  • This invention relates to light sources and more particularly to light sources employing light emitting diodes (LED or LEDs) and more particularly to light sources useful in the automotive field such as for headlights, taillights, stoplights, fog lights, turn signals, etc. Still more particularly, it relates to such light sources packaged to achieve industry
  • LEDs have enormous life times, in the area of 100,000 hours, and are not as subject to vibration failures.
  • these LED sources have been hard-wired into their appropriate location, which increases the cost of installation. It would therefore be an advance in the art if an LED light source could be provided that had the ease of installation of the incandescent light sources.
  • LED light sources employing single LEDs could be utilized, with such light sources providing acceptable illumination, good heat removal and ease of use.
  • a lamp assembly that has a reflector for directing light in a given direction.
  • the reflector has an aperture therein and a thermally conductive post is fitted into the aperture.
  • the post has a first surface within the reflector and a second surface outside of the reflector.
  • a single, side emitting, LED light source is fixed to the first surface, a heat sink is fixed to the second surface and circuitry is associated with the LED light source for supplying power thereto.
  • the light source includes a cap having a second reflector provided thereon and in another embodiment of the invention the light source includes a dome-shaped, transparent element having sidewalls and a closed top having at least one metallized surface.
  • An optic tailored to a specific emission pattern can be included in the transparent element.
  • a lamp assembly 10 that comprises a reflector 12 for directing light in a given direction.
  • An aperture 14 is formed in the reflector, substantially in the base thereof, and a thermally conductive post 16 is fitted in the aperture 14 and has a first surface 18 within the reflector and a second surface 20 outside of the reflector.
  • the post 16 is preferably a metal such as copper.
  • a single, side emitting, LED light source 22 is fixed to the first surface 18, preferably via an electrically insulating but thermally conductive member 23.
  • a heat sink 24 is fixed to the second surface 20 and preferably is an inherent part thereof to insure good heat conductivity between the post 16 and the heat sink 24.
  • Circuitry 26 which can be mounted on a printed circuit board, is associated with the LED light source 22 for supplying power thereto and preferably is mounted outside of the reflector. Suitable electrical connections, not shown, can be supplied from the circuitry 26 to the LED light source 22 via insulated wires running up the side of the post 16 or threaded through longitudinal apertures formed in the post 16. Alternatively, an electrically insulating material supplied with conductive traces can cover the post 16.
  • the light source 22 can be mounted alone atop the post 16 or it can have a cap 28 that includes a secondary reflector 30 mounted thereon. With a cap 28 in place, during operation the LED light source can emit light rays directly to the reflector 12, as shown by arrow 60, or the light rays can be emitted toward the second reflector 30 and redirected toward the reflector 12, as shown diagrammatically by the arrow 62.
  • the LED light source 22 can be covered by a dome-shaped, transparent element 32 having sidewalls 34 and a closed top 36 having at least one metallized surface 38.
  • the sidewalls 34 can include at least one optic 40, which can take the form of a molded-in lens tailored to provide a specific emission pattern.
  • the post 16 has a given length measured along a longitudinal axis 42 whereby the LED light source 22 is positioned at a focal point of the reflector 12.
  • the reflector 12 can be any desired shape but for use as an automotive taillight assembly is preferably concave. Still more particularly, the shape can be a parabolic section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
EP05015270A 2004-07-16 2005-07-14 Steg zur Befestigung einer Leuchtdiode Withdrawn EP1617132A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58847004P 2004-07-16 2004-07-16
US10/995,855 US20060109654A1 (en) 2004-11-23 2004-11-23 Stem mount for light emitting diode

Publications (2)

Publication Number Publication Date
EP1617132A2 true EP1617132A2 (de) 2006-01-18
EP1617132A3 EP1617132A3 (de) 2006-02-22

Family

ID=35094137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05015270A Withdrawn EP1617132A3 (de) 2004-07-16 2005-07-14 Steg zur Befestigung einer Leuchtdiode

Country Status (3)

Country Link
EP (1) EP1617132A3 (de)
JP (1) JP2006032347A (de)
CA (1) CA2510370A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135327A1 (de) * 2008-05-05 2009-11-12 Highlight Illumina Ag Vorrichtung zur beleuchtung
DE102010030296A1 (de) * 2010-06-21 2011-12-22 Osram Gesellschaft mit beschränkter Haftung Lampe
WO2013067781A1 (zh) * 2011-11-09 2013-05-16 Lu Zhoubo Led灯具
US8657457B2 (en) 2010-05-31 2014-02-25 Mitsubishi Electric Corporation LED surface cover, and LED lighting system, display device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29708858U1 (de) * 1997-05-20 1997-07-31 EBT Licht-Technik GmbH & Co. KG, 67098 Bad Dürkheim Anzeigeelement
US6218785B1 (en) * 1999-03-19 2001-04-17 Incerti & Simonini Di Incerti Edda & C. S.N.C. Low-tension lighting device
US6502952B1 (en) * 1999-06-23 2003-01-07 Fred Jack Hartley Light emitting diode assembly for flashlights
JP2001053341A (ja) * 1999-08-09 2001-02-23 Kazuo Kobayashi 面発光表示器
US6328456B1 (en) * 2000-03-24 2001-12-11 Ledcorp Illuminating apparatus and light emitting diode
US6543911B1 (en) * 2000-05-08 2003-04-08 Farlight Llc Highly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore
US6773154B2 (en) * 2002-08-21 2004-08-10 North American Lighting, Inc. Automotive lighting device
DE20313355U1 (de) * 2003-08-27 2003-10-30 Trelock Gmbh Fahrradscheinwerfer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135327A1 (de) * 2008-05-05 2009-11-12 Highlight Illumina Ag Vorrichtung zur beleuchtung
US8657457B2 (en) 2010-05-31 2014-02-25 Mitsubishi Electric Corporation LED surface cover, and LED lighting system, display device
DE102010030296A1 (de) * 2010-06-21 2011-12-22 Osram Gesellschaft mit beschränkter Haftung Lampe
DE102010030296B4 (de) * 2010-06-21 2012-11-22 Osram Ag Lampe mit konkavem Reflektor und einem Vorsprung für mindestens eine Lichtquelle
WO2013067781A1 (zh) * 2011-11-09 2013-05-16 Lu Zhoubo Led灯具

Also Published As

Publication number Publication date
CA2510370A1 (en) 2006-01-16
EP1617132A3 (de) 2006-02-22
JP2006032347A (ja) 2006-02-02

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