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EP2112429B1 - Unité de lampe pour véhicules - Google Patents

Unité de lampe pour véhicules Download PDF

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Publication number
EP2112429B1
EP2112429B1 EP08007950A EP08007950A EP2112429B1 EP 2112429 B1 EP2112429 B1 EP 2112429B1 EP 08007950 A EP08007950 A EP 08007950A EP 08007950 A EP08007950 A EP 08007950A EP 2112429 B1 EP2112429 B1 EP 2112429B1
Authority
EP
European Patent Office
Prior art keywords
reflect surface
light
projection lens
supplemental
reflect
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.)
Not-in-force
Application number
EP08007950A
Other languages
German (de)
English (en)
Other versions
EP2112429A1 (fr
Inventor
Koji c/o Ichikoh Industries Ltd. Nishihata
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.)
Ichikoh Industries Ltd
Original Assignee
Ichikoh Industries 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 Ichikoh Industries Ltd filed Critical Ichikoh Industries Ltd
Priority to EP08007950A priority Critical patent/EP2112429B1/fr
Publication of EP2112429A1 publication Critical patent/EP2112429A1/fr
Application granted granted Critical
Publication of EP2112429B1 publication Critical patent/EP2112429B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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]
    • F21S41/155—Surface emitters, e.g. organic light emitting diodes [OLED]
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/18—Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs
    • 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

  • the elliptical reflector is thereby placed such that the corresponding optical axis of the elliptical reflector is coaxial with said imaged axis and that the focal point of the elliptical reflector coincides with the imaged focal point of the projection lens.
  • the semiconductor light source for example LED and the like
  • the semiconductor light source is lighted to emit light, and thus the light from the semiconductor light source, for example LED and the like, is reflected by the ellipse reflect surface, and, as a predetermined distributed light pattern, is projected (illuminates, emits, or is given off) outwardly in the predetermined direction from the projection lens.
  • the existing lamp unit for vehicles mentioned above do not take into consideration the method of preventing the light, except the predetermined distributed light pattern projected from the projection lens, from emitting from the projection lens, and therefore, there exists the circumstance where the light except the predetermined distributed light pattern projected from the projection lens, i.e. the light not distributed, emits from the projection lens.
  • the existing lamp unit for vehicles mentioned above do not take into consideration the method of the effective use of the light from semiconductor light source, and therefore, the existing lamp unit for vehicles mentioned above do not effectively use the light from semiconductor light source.
  • the present invention is characterized in that a planar reflect surface is arranged between a projection lens and its focus in such a way that the planar reflect surface intersects the light axis of the projection lens; a light shutout member for shutting out the straight light from a semiconductor light source from illuminating toward the projection lens, is arranged between the semiconductor light source and the projection lens; supplemental reflect surface is arranged on the light shutout member for reflecting the light from the semiconductor light source toward the side of the shade.
  • the second reflector 3 is formed of the vertical board with a semicircle opening at its upper part and a recess 11 at its lower part.
  • a second reflect surface 12 is provided along the plane or roughly a plane of the light axis Z2-Z2 of the first reflect surface 9 by way of aluminum steam plating or silver coating.
  • the second reflect surface 12 is arranged between the second focus F2 of the first reflect surface 9 (i.e. the second focus F2 or its vicinity) and the semiconductor light source 4.
  • a screw hole 13 for screw to fix the fixing member (or a through hole for screw to fix the fixing member) is arranged at each of the four corners of the vertical board of the second reflector 3.
  • the shade 5 and the second reflector 3 are arranged integratedly, that is, the shade 5 is concurrently used as the vertical board of the second reflector 3, as a result of which, the second reflect surface 12 is arranged on the shade 5. Furthermore, the shade 5 and the second reflector 3 can be arranged separately and then integrated by a fixing member.
  • the shade 5 is arranged between the second focus F2 (i.e. the second focus F2 or its vicinity) of the first reflect surface 9 and the semiconductor light source 4. In the part of the second focus F2 (i.e. the second focus F2 or its vicinity) of the first reflect surface 9 in the shade 5, a edge 16 is arranged along the second focus (the second focus line) F2 of the first reflect surface 9.
  • the shade 5 cuts off a portion of the reflected light 14 emitting from the semiconductor light source 4 and reflected by the first reflect surface 9 and uses the remaining reflected light to form a predetermined distributed light pattern P having cutoff lines CL, such as the distributed light pattern for interleaving, the distributed light pattern for high way, etc (see Fig.4 ).
  • the edge 16 of the shade 5 forms the cutoff lines CL of the distributed light pattern P and elbow E.
  • the second reflect surface 12 reflects the reflected light L4 cut off by the shade 5 acting as a reflected light L9 toward the predetermined direction, i.e. one side of the planar reflect surface 7, and forms the secondary distributed light pattern (not shown).
  • the horizontal lens light axis Z1-Z1 of the projection lens 6 exists as a vertical fictitious lens light axis Z3-Z3 intersecting the horizontal lens light axis Z1-Z1 orthogonally by way of the planar reflect surface 7.
  • the fictitious lens light axis (Z3-Z3) is the image of the lens light axis (Z1-Z1) generated by the planar reflect surface 7.
  • the vertical fictitious lens light axis Z3-Z3 is consistent or roughly consistent with the light axis Z2-Z2 of the first reflect surface 9.
  • the light shutout member 8 is arranged in the predetermined range from one side of the projection lens 6 to one side of the planar reflect surface 7, the straight light L6 from the semiconductor light source 4, the reflected light L7 from the second reflect surface 12, and the reflected light L8 from the second supplemental reflect surface 23 (25-27) can be shut out from illuminating toward the projection lens 6, and the reflected light L4 from the first surface 9, the reflected light L9 from the second reflect surface 12, and the reflected light L12, L14, L16 from the second supplemental reflect surface 23 (25-27) can illuminate toward the planar reflect surface 7, and the reflected light L10, L19 from the planar reflect surface 7 can illuminate toward the projection lens 6.
  • the first supplemental reflect surfaces 17-21 comprise five reflect surfaces and the second supplemental reflect surfaces 23 (25-27) comprise three reflect surfaces, it is possible to design the five distributed light pattern P1-P2 to be the expected secondary distributed light pattern, for example, the distributed light pattern with high brightness and the distributed light pattern for a overhead sign.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (5)

  1. Unité formant lampe (1) pour véhicules de type projecteur utilisant une source de lumière à semi-conducteur (4) en tant que source de lumière, comprenant,
    un réflecteur ayant une surface réfléchissante en ellipse (9),
    une source de lumière à semi-conducteur (4) agencée de sorte que sa partie émettant de la lumière est positionnée au niveau du premier foyer (F1) de la surface réfléchissante en ellipse (9),
    une lentille de projection (6) avec son axe lumineux de lentille (Z1-Z1) dans la direction horizontale pour projeter un motif lumineux réparti prédéterminé vers une direction prédéterminée,
    une surface réfléchissante plane (7) agencée entre la lentille de projection (6) et son foyer (FL1) de sorte que la surface réfléchissante plane (7) croise l'axe lumineux (Z1-Z1) de la lentille de projection (6) et réfléchit le motif lumineux réparti prédéterminé (P) vers un côté de la lentille de projection (6),
    la surface réfléchissante plane produit un axe reflété (Z3-Z3) de l'axe lumineux de lentille (Z1-Z1), ledit axe reflété (Z3-Z3) croisant orthogonalement l'axe lumineux de lentille (Z1-Z1), la surface réfléchissante plane produit un point focal reflété (FL2) qui est la réflexion symétrique du point focal de lentille (FL1) par rapport au plan de la surface réfléchissante plane, le réflecteur en ellipse étant placé de sorte que :
    l'axe optique (Z2-Z2) du réflecteur en ellipse est coaxial avec ledit axe reflété (Z3-Z3) dudit axe optique de lentille (Z2-Z2),
    le second point focal (F2) dudit réflecteur en ellipse est positionné au niveau dudit point focal reflété (FL2) dudit point focal de lentille (FL1),
    caractérisée par
    un élément de blocage de lumière (8) agencé entre la source de lumière à semi-conducteur (4) et la lentille de projection (6) pour empêcher la lumière droite (L6) en provenance de la source de lumière à semi-conducteur (4) d'éclairer vers la lentille de projection (6),
    une surface réfléchissante supplémentaire (17, 18, 19, 20) agencée sur l'élément de blocage de lumière (8) pour réfléchir la lumière (L3) en provenance de la source de lumière à semi-conducteur (4) vers le côté d'un masque (5).
  2. Unité formant lampe (1) pour véhicules selon la revendication 1, dans laquelle,
    la surface réfléchissante en ellipse (9) est la première surface réfléchissante ;
    la surface réfléchissante supplémentaire (17, 18, 19, 20) est la première surface réfléchissante supplémentaire ;
    le masque (5) est agencé entre le second foyer (F2) de la surface réfléchissante en ellipse (9) et la source de lumière à semi-conducteur (4), pour couper une partie de la lumière réfléchie (L4) émanant de la source de lumière à semi-conducteur (4) et réfléchie par la surface réfléchissante en ellipse (9), et utilisant la lumière réfléchie restante (L4) pour former un motif lumineux réparti prédéterminé (P) ayant des lignes d'extinction (CL),
    le masque (5) est respectivement muni d'une seconde surface réfléchissante (12) pour réfléchir la lumière réfléchie (L4) coupée par le masque (5) vers la direction prédéterminée et d'une seconde surface réfléchissante supplémentaire (23) pour réfléchir la lumière réfléchie (L11, L13, L15, L17) en provenance de la première surface réfléchissante supplémentaire (17, 18, 19, 20) vers la direction prédéterminée ;
    l'élément de blocage de lumière (8) est agencé au niveau de l'endroit allant d'un côté de la lentille de projection (6) à un côté de la surface réfléchissante plane (7), de sorte qu'il peut empêcher la lumière droite (L6) en provenance de la source de lumière à semi-conducteur (4), la lumière réfléchie (L7) en provenance de la seconde surface réfléchissante (12), et la lumière réfléchie (L8) en provenance de la seconde surface réfléchissante supplémentaire (23) d'éclairer vers la lentille de projection (6), et permet à la lumière réfléchie (L4) en provenance de la première surface réfléchissante (9), à la lumière réfléchie (L9) en provenance de la seconde surface réfléchissante (12), et à la lumière réfléchie (L12, L14, L16) en provenance de la seconde la surface réfléchissante supplémentaire (23) d'éclairer vers la surface réfléchissante plane (7), et permet à la lumière réfléchie (L10) en provenance de la surface réfléchissante plane (7) d'éclairer vers la lentille de projection (6) dans la portée de la lentille de projection (6).
  3. Unité formant lampe (1) pour véhicules selon la revendication 2, dans laquelle,
    la première surface réfléchissante supplémentaire (17, 18, 19, 20) et la seconde surface réfléchissante supplémentaire (23) comprennent au moins une surface réfléchissante.
  4. Unité formant lampe (1) pour véhicules selon la revendication 2 ou la revendication 3, dans laquelle,
    la seconde surface réfléchissante (12) est positionnée plus près du masque (5) que la ligne reliant le second foyer (F2) de la première surface réfléchissante (9) au zénith de la source de lumière à semi-conducteur (4).
  5. Unité formant lampe (1) pour véhicules selon l'une quelconque des revendications 2 à 4, dans laquelle,
    la surface réfléchissante (12) et le masque (5) sont formés de façon intégrée ;
    le réflecteur (2) et l'élément de blocage de lumière (8) sont formés de façon intégrée.
EP08007950A 2008-04-24 2008-04-24 Unité de lampe pour véhicules Not-in-force EP2112429B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08007950A EP2112429B1 (fr) 2008-04-24 2008-04-24 Unité de lampe pour véhicules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08007950A EP2112429B1 (fr) 2008-04-24 2008-04-24 Unité de lampe pour véhicules

Publications (2)

Publication Number Publication Date
EP2112429A1 EP2112429A1 (fr) 2009-10-28
EP2112429B1 true EP2112429B1 (fr) 2011-06-15

Family

ID=39712679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007950A Not-in-force EP2112429B1 (fr) 2008-04-24 2008-04-24 Unité de lampe pour véhicules

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EP (1) EP2112429B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8632233B2 (en) 2010-03-01 2014-01-21 Ichikoh Industries, Ltd. Vehicle lighting device with heat sink member and shade

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5897898B2 (ja) * 2011-03-23 2016-04-06 株式会社小糸製作所 車両用照明灯具
FR2987102B1 (fr) * 2012-02-16 2014-03-14 Valeo Vision Piece d'un projecteur comprenant un moyen de reflexion a coefficient de reflexion superieur a 90%

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849158B1 (fr) 2002-12-20 2005-12-09 Valeo Vision Module d'eclairage pour projecteur de vehicule
JP4102240B2 (ja) 2003-04-08 2008-06-18 株式会社小糸製作所 車両用前照灯
EA009340B1 (ru) * 2003-07-29 2007-12-28 Турхан Алджелик Фара для непрерывного дальнего света без ослепляющего действия
JP2005228715A (ja) 2004-02-16 2005-08-25 Koito Mfg Co Ltd 車両用前照灯
JP2005302328A (ja) 2004-04-06 2005-10-27 Ichikoh Ind Ltd プロジェクタ型車両用灯具
JP4270093B2 (ja) 2004-10-06 2009-05-27 市光工業株式会社 プロジェクタ型車両用前照灯ユニット
FR2899668B1 (fr) * 2006-04-06 2009-11-20 Valeo Vision Module d'eclairage pour projecteur lumineux de vehicule automobile, et projecteur comportant un tel module.
JP4458067B2 (ja) * 2006-05-17 2010-04-28 市光工業株式会社 車両用灯具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8632233B2 (en) 2010-03-01 2014-01-21 Ichikoh Industries, Ltd. Vehicle lighting device with heat sink member and shade

Also Published As

Publication number Publication date
EP2112429A1 (fr) 2009-10-28

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