EP2518393A3 - Vehicular lamp - Google Patents

Vehicular lamp Download PDF

Info

Publication number
EP2518393A3
EP2518393A3 EP12164740.8A EP12164740A EP2518393A3 EP 2518393 A3 EP2518393 A3 EP 2518393A3 EP 12164740 A EP12164740 A EP 12164740A EP 2518393 A3 EP2518393 A3 EP 2518393A3
Authority
EP
European Patent Office
Prior art keywords
led
light
opening portion
vehicular lamp
reflector
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
EP12164740.8A
Other languages
German (de)
French (fr)
Other versions
EP2518393B1 (en
EP2518393A2 (en
Inventor
Naoki Uchida
Motohiro Komatsu
Takayuki Yagi
Tsukasa Tokida
Masanobu Mizuno
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.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of EP2518393A2 publication Critical patent/EP2518393A2/en
Publication of EP2518393A3 publication Critical patent/EP2518393A3/en
Application granted granted Critical
Publication of EP2518393B1 publication Critical patent/EP2518393B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/143Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/151Light emitting diodes [LED] arranged in one or more lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/155Surface emitters, e.g. organic light emitting diodes [OLED]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19Attachment of light sources or lamp holders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25Projection lenses
    • F21S41/255Lenses with a front view of circular or truncated circular outline
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • F21S41/321Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • F21S41/323Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39Attachment thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40Cooling of lighting devices
    • F21S45/47Passive cooling, e.g. using fins, thermal conductive elements or openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10Arrangement or contour of the emitted light
    • F21W2102/17Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/18Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs

Abstract

A vehicular lamp includes: an LED (40); an LED mount portion (27) for mounting the LED (40); a reflector (25) having a first opening portion (34) that is disposed in front of a light emitting surface of the LED (40) and through which light from the LED (40) enters, a reflection portion (33) that reflects the light that has entered through the first opening portion (34), and a second opening portion (35) through which the light reflected from the reflection portion (33) is radiated, wherein the area of the first opening portion (34) is smaller than the area of the light emitting surface of the LED (40); and a projection lens (30) that controls the light radiated from the reflector (25) and radiates the light to the front of the lamp.
EP12164740.8A 2011-04-26 2012-04-19 Vehicular lamp Not-in-force EP2518393B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011098748A JP5666977B2 (en) 2011-04-26 2011-04-26 Vehicle lighting

Publications (3)

Publication Number Publication Date
EP2518393A2 EP2518393A2 (en) 2012-10-31
EP2518393A3 true EP2518393A3 (en) 2018-04-18
EP2518393B1 EP2518393B1 (en) 2019-02-27

Family

ID=45999686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12164740.8A Not-in-force EP2518393B1 (en) 2011-04-26 2012-04-19 Vehicular lamp

Country Status (3)

Country Link
EP (1) EP2518393B1 (en)
JP (1) JP5666977B2 (en)
CN (1) CN102759056B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6089686B2 (en) * 2012-12-25 2017-03-08 日亜化学工業株式会社 Light emitting device
JP6261303B2 (en) * 2013-11-29 2018-01-17 スタンレー電気株式会社 Vehicle lighting
JP2016018921A (en) * 2014-07-09 2016-02-01 日本電気硝子株式会社 Wavelength conversion member and light-emitting device
JP6476663B2 (en) * 2014-08-29 2019-03-06 市光工業株式会社 Vehicle lighting
JP6332294B2 (en) * 2015-11-30 2018-05-30 日亜化学工業株式会社 Light emitting device
WO2017121676A1 (en) * 2016-01-12 2017-07-20 Lumileds Holding B.V. Lighting arrangement with exact positioning of an optical element
JP2017130309A (en) * 2016-01-19 2017-07-27 スタンレー電気株式会社 Vehicular headlamp
CN109073182B (en) * 2016-04-13 2021-05-25 株式会社小糸制作所 Light emitting unit and vehicle lamp
DE102017111447A1 (en) * 2017-05-24 2018-11-29 Automotive Lighting Reutlingen Gmbh LED light module for a motor vehicle headlight
US11530794B2 (en) * 2018-12-06 2022-12-20 Kyocera Corporation Lighting device for a vehicle and vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003056876A2 (en) * 2001-12-14 2003-07-10 Digital Optics International Corporation Uniform illumination system
DE102007052696A1 (en) * 2007-01-11 2008-07-17 Zizala Lichtsysteme Gmbh Total reflection lens system for a headlamp or light unit of a motor vehicle injects light from a total reflecting lens element into a lens element partially via a limiting surface of the lens element
US20080225544A1 (en) * 2007-03-14 2008-09-18 Koito Manufacturing Co., Ltd. Lamp unit of vehicle headlamp
US20080253144A1 (en) * 2007-04-16 2008-10-16 Magna International Inc. Semiconductor light engine using polymer light pipes and lighting systems constructed with the light engine
JP2008282575A (en) * 2007-05-08 2008-11-20 Stanley Electric Co Ltd Led lamp for head lamp light source
DE102008033416A1 (en) * 2008-07-16 2010-01-21 Osram Gesellschaft mit beschränkter Haftung support frame
US20100046243A1 (en) * 2008-08-20 2010-02-25 Yasushi Yatsuda Vehicle Lighting Unit and Vehicle Light
EP2182271A1 (en) * 2008-10-30 2010-05-05 Koito Manufacturing Co., Ltd. Vehicular lamp unit and vehicular lamp

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4080780B2 (en) * 2002-04-23 2008-04-23 株式会社小糸製作所 Light source unit
JP4339156B2 (en) * 2004-03-18 2009-10-07 株式会社小糸製作所 Vehicle lamp unit
JP4265560B2 (en) 2005-03-31 2009-05-20 市光工業株式会社 Vehicle lighting
DE102005014754A1 (en) * 2005-03-31 2006-10-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Car headlights
JP2007179993A (en) * 2005-12-28 2007-07-12 Koito Mfg Co Ltd Vehicle headlamp
JP2007235079A (en) * 2006-03-01 2007-09-13 Ikuo Iwai Light emitting device
US7686486B2 (en) * 2007-06-30 2010-03-30 Osram Sylvania Inc. LED lamp module
JP5133862B2 (en) * 2008-12-09 2013-01-30 株式会社小糸製作所 Lighting fixtures for vehicles
CN201787459U (en) * 2010-06-22 2011-04-06 广东聚科照明股份有限公司 High-power LED light source lamp

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003056876A2 (en) * 2001-12-14 2003-07-10 Digital Optics International Corporation Uniform illumination system
DE102007052696A1 (en) * 2007-01-11 2008-07-17 Zizala Lichtsysteme Gmbh Total reflection lens system for a headlamp or light unit of a motor vehicle injects light from a total reflecting lens element into a lens element partially via a limiting surface of the lens element
US20080225544A1 (en) * 2007-03-14 2008-09-18 Koito Manufacturing Co., Ltd. Lamp unit of vehicle headlamp
US20080253144A1 (en) * 2007-04-16 2008-10-16 Magna International Inc. Semiconductor light engine using polymer light pipes and lighting systems constructed with the light engine
JP2008282575A (en) * 2007-05-08 2008-11-20 Stanley Electric Co Ltd Led lamp for head lamp light source
DE102008033416A1 (en) * 2008-07-16 2010-01-21 Osram Gesellschaft mit beschränkter Haftung support frame
US20100046243A1 (en) * 2008-08-20 2010-02-25 Yasushi Yatsuda Vehicle Lighting Unit and Vehicle Light
EP2182271A1 (en) * 2008-10-30 2010-05-05 Koito Manufacturing Co., Ltd. Vehicular lamp unit and vehicular lamp

Also Published As

Publication number Publication date
EP2518393B1 (en) 2019-02-27
CN102759056B (en) 2014-08-27
JP5666977B2 (en) 2015-02-12
JP2012230834A (en) 2012-11-22
CN102759056A (en) 2012-10-31
EP2518393A2 (en) 2012-10-31

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