EP2500633A3 - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

Info

Publication number
EP2500633A3
EP2500633A3 EP20120159434 EP12159434A EP2500633A3 EP 2500633 A3 EP2500633 A3 EP 2500633A3 EP 20120159434 EP20120159434 EP 20120159434 EP 12159434 A EP12159434 A EP 12159434A EP 2500633 A3 EP2500633 A3 EP 2500633A3
Authority
EP
European Patent Office
Prior art keywords
cutoff line
forming
neighborhood
gradation
center
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
EP20120159434
Other languages
German (de)
French (fr)
Other versions
EP2500633B1 (en
EP2500633A2 (en
Inventor
Teruaki Yamamoto
Kiyoshi Sazuka
Hiroki Tokutake
Kenichi Takada
Yuji Yasuda
Hirohiko Ohshio
Tatsuhiko Yamamichi
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 EP2500633A2 publication Critical patent/EP2500633A2/en
Publication of EP2500633A3 publication Critical patent/EP2500633A3/en
Application granted granted Critical
Publication of EP2500633B1 publication Critical patent/EP2500633B1/en
Active 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
    • F21S41/68Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689Flaps, i.e. screens pivoting around one of their edges
    • 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
    • F21S41/17Discharge 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
    • F21S41/40Illuminating 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
    • 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
    • F21S41/68Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/686Blades, i.e. screens moving in a vertical plane
    • 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
    • F21W2102/13Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/14Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
    • F21W2102/15Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users wherein the light is emitted under L-shaped cut-off lines, i.e. vertical and horizontal cutoff lines
    • 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
    • F21W2102/13Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/16Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having blurred cut-off lines

Abstract

A lamp unit (210) includes: a projection lens (20) that radiates light from a light source (14); and a shade (110,120,130) interposed between the light source and the projection lens and for forming a light distribution pattern having a first cutoff line extending horizontally from a neighborhood of a center of the light distribution pattern and a second cutoff line extending upwardly from the neighborhood of the center. The shade includes a gradation forming portion for forming a gradation in the second cutoff line in the second cutoff line forming edge portion. The gradation is for making variations gradual in illumination in the portion of the second cutoff line than that in an area of the neighborhood of the center.
EP12159434.5A 2011-03-15 2012-03-14 Vehicle headlamp Active EP2500633B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011056861A JP5645724B2 (en) 2011-03-15 2011-03-15 Lamp unit

Publications (3)

Publication Number Publication Date
EP2500633A2 EP2500633A2 (en) 2012-09-19
EP2500633A3 true EP2500633A3 (en) 2015-05-06
EP2500633B1 EP2500633B1 (en) 2020-06-10

Family

ID=45887952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12159434.5A Active EP2500633B1 (en) 2011-03-15 2012-03-14 Vehicle headlamp

Country Status (2)

Country Link
EP (1) EP2500633B1 (en)
JP (1) JP5645724B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6567245B2 (en) * 2012-12-27 2019-08-28 市光工業株式会社 Vehicle headlamp
JP6124695B2 (en) * 2013-06-11 2017-05-10 株式会社小糸製作所 Vehicle lighting
KR102036096B1 (en) * 2013-06-11 2019-10-24 현대모비스 주식회사 Shade for Headlamp
WO2014203730A1 (en) * 2013-06-20 2014-12-24 株式会社小糸製作所 Vehicle headlamp
CN104501105B (en) * 2014-12-31 2017-06-16 深圳市德帮能源科技有限公司 Mobile LED lamp angle regulator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050225999A1 (en) * 2004-04-08 2005-10-13 Bucher Lloyd K Projector lamp headlight with chromatic aberration correction
JP2006294380A (en) * 2005-04-08 2006-10-26 Ichikoh Ind Ltd Projector-type head lamp for automobile
DE102009010558A1 (en) * 2009-02-13 2010-08-19 Automotive Lighting Reutlingen Gmbh Light module for a lighting device
US20100309680A1 (en) * 2009-06-04 2010-12-09 Takashi Akutagawa Vehicle headlight

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62137502U (en) * 1986-02-25 1987-08-29
JPH046084Y2 (en) * 1987-03-31 1992-02-20
JPH0566807U (en) * 1992-02-12 1993-09-03 スタンレー電気株式会社 Projector headlamp
JP4962869B2 (en) * 2008-02-05 2012-06-27 市光工業株式会社 Vehicle lighting
JP5260098B2 (en) 2008-03-21 2013-08-14 株式会社小糸製作所 Vehicle headlamp device
JP2010000957A (en) * 2008-06-20 2010-01-07 Koito Mfg Co Ltd Headlight device for vehicle
JP2010235108A (en) * 2009-03-12 2010-10-21 Koito Mfg Co Ltd Headlight device for vehicle
JP2010257909A (en) * 2009-04-28 2010-11-11 Koito Mfg Co Ltd Vehicle headlamp apparatus
JP5398443B2 (en) * 2009-09-15 2014-01-29 株式会社小糸製作所 Vehicle headlamp device
AT509830B1 (en) * 2010-04-22 2012-07-15 Zizala Lichtsysteme Gmbh HEADLIGHTS FOR VEHICLES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050225999A1 (en) * 2004-04-08 2005-10-13 Bucher Lloyd K Projector lamp headlight with chromatic aberration correction
JP2006294380A (en) * 2005-04-08 2006-10-26 Ichikoh Ind Ltd Projector-type head lamp for automobile
DE102009010558A1 (en) * 2009-02-13 2010-08-19 Automotive Lighting Reutlingen Gmbh Light module for a lighting device
US20100309680A1 (en) * 2009-06-04 2010-12-09 Takashi Akutagawa Vehicle headlight

Also Published As

Publication number Publication date
EP2500633B1 (en) 2020-06-10
EP2500633A2 (en) 2012-09-19
JP2012195101A (en) 2012-10-11
JP5645724B2 (en) 2014-12-24

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