EP0756132A1 - Feu pour véhicule à épaisseur réduite - Google Patents

Feu pour véhicule à épaisseur réduite Download PDF

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Publication number
EP0756132A1
EP0756132A1 EP96112127A EP96112127A EP0756132A1 EP 0756132 A1 EP0756132 A1 EP 0756132A1 EP 96112127 A EP96112127 A EP 96112127A EP 96112127 A EP96112127 A EP 96112127A EP 0756132 A1 EP0756132 A1 EP 0756132A1
Authority
EP
European Patent Office
Prior art keywords
motor vehicle
polymeric
face
vehicle lamp
led
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Withdrawn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
EP96112127A
Other languages
German (de)
English (en)
Inventor
John Monk
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Magneti Marelli SpA
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 Magneti Marelli SpA filed Critical Magneti Marelli SpA
Publication of EP0756132A1 publication Critical patent/EP0756132A1/fr
Withdrawn legal-status Critical Current

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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
    • 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]
    • F21S43/145—Surface emitters, e.g. organic light emitting diodes [OLED]
    • 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
    • F21Y2105/00—Planar light sources
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the present invention relates to a reduced-thickness motor vehicle lamp.
  • present-day lighting units for motor vehicles comprise a light source (bulb) that generates a light beam, a reflector with a reflective surface that receives the light beam generated by the source and distributes it within a limited solid angle, and a transparent prismatic cover made up of a plurality of prismatic diffusing lenses that spread the light beam out into a larger solid angle in accordance with the vehicle light regulations in force.
  • a light source bulb
  • a reflector with a reflective surface that receives the light beam generated by the source and distributes it within a limited solid angle
  • a transparent prismatic cover made up of a plurality of prismatic diffusing lenses that spread the light beam out into a larger solid angle in accordance with the vehicle light regulations in force.
  • the thickness of lamps of this sort is quite considerable and such as to require, for mounting purposes, large intrusions into the bodywork of the motor vehicle. In fact these intrusions often require that the bodywork of the vehicle be cut through and this raises the cost of fitting the lamp.
  • Many solutions to this problem have already been proposed, all with the purpose of reducing the thickness of the lamp and so limiting the intrusion of the lamp into the bodywork of the vehicle.
  • Some of these proposals are based on the use of light-emitting diodes (LEDs) for the light source; others, on the use of lamps with Fresnel lenses in order to eliminate the reflectors, and still others on the use of lamps with lightguides and optical guides of diffractive type.
  • the object of the present invention is therefore to provide a motor vehicle lamp that does not have the drawbacks described above.
  • the present invention provides a motor vehicle lamp comprising a light source capable of generating a light beam, which lamp is characterized in that said light source comprises a laminated polymeric light-emitting diode (LED).
  • a light source capable of generating a light beam
  • said light source comprises a laminated polymeric light-emitting diode (LED).
  • the lamp according to the invention is marked 1.
  • the lamp 1 is intended to be mounted on the bodywork 10 of a motor vehicle and comprises a polymeric LED 2 acting as the light source, a thin coloured film 3 acting as an intermediate filter and an external lens 4 of transparent plastic.
  • the polymeric LED 2 is made of organic semiconductors in a flat laminated structure and its emitting area is equal in dimensions to the area needed for the particular function.
  • the polymeric LED 2 comprises a first and a second electrode 5, 6 between which two polymeric layers 7, 8 are positioned in contact with each other.
  • a direct-current generator 9 is connected up between the first electrode 5 and the second electrode 6 in order to polarize the polymeric LED 2.
  • the external lens 4 has a first face 4a turned towards the bodywork 10 of the motor vehicle and a second face 4b on the other side.
  • the film 3 is arranged between the second electrode 6 of the polymeric LED 2 and the face 4a of the transparent lens 4 and is separated from each of these by a small spacer gap 11, 12, respectively.
  • the lamp 1 operates in the following manner: the polymeric laminated LED 2 emits light which is filtered by the coloured film 3 in order to ensure that the colour of the light as it leaves the lamp 1 complies with the regulations in force.
  • the gaps 11, 12 between the polymeric LED 2 and the film 3, and between the film 3 and the external lens 4 make it possible to achieve greater uniformity of the light leaving the lamp 1, while the lens 4 makes it possible spatially to distribute and control the light beam emitted by the polymeric LED 2 in accordance with the requirements of the various functions of the lamp 1.
  • the use of a polymeric laminated LED provides a light source that has no dimensional limitations and is flexible and adaptable to the wide variety of curves of motor vehicle bodywork.
  • the total thickness of the lamp is also small enough to enable it to be attached to the bodywork of the motor vehicle with the least possible intrusion into the bodywork and without the need for cutting for the surface mounting of the functions. It is therefore possible greatly to simplify the operations of mounting the lamp and sharply to reduce the costs of assembly.
  • the device described and illustrated here can be modified and altered without thereby departing from the scope of the present invention. It is possible, for example, to arrange the coloured film 3 acting as the intermediate filter in direct contact with the polymeric LED 2 and with the external lens 4 when the parameters of uniformity of the light emitted by the polymeric LED are already respected. Alternatively it is possible to dispense completely with the coloured film in those cases in which the light emitted by the polymeric LED already conforms with the relevant regulations on the colour of the light emitted by the lamp.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
EP96112127A 1995-07-28 1996-07-26 Feu pour véhicule à épaisseur réduite Withdrawn EP0756132A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO950639 1995-07-28
IT95TO000639A IT1280453B1 (it) 1995-07-28 1995-07-28 Fanale per autoveicoli di spessore ridotto.

Publications (1)

Publication Number Publication Date
EP0756132A1 true EP0756132A1 (fr) 1997-01-29

Family

ID=11413757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112127A Withdrawn EP0756132A1 (fr) 1995-07-28 1996-07-26 Feu pour véhicule à épaisseur réduite

Country Status (2)

Country Link
EP (1) EP0756132A1 (fr)
IT (1) IT1280453B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999040364A1 (fr) * 1998-02-05 1999-08-12 Zumtobel Staff Gmbh Systeme d'eclairage
EP1361391A2 (fr) 2002-05-08 2003-11-12 Zumtobel Staff GmbH Lampe pour l'éclairage d'un poste de travail
CN101095012B (zh) * 2004-11-03 2010-11-10 阿尔斯托姆科技有限公司 预混合式烧嘴
WO2011101268A1 (fr) * 2010-02-19 2011-08-25 Valeo Vision Système optique de véhicule automobile
JP2013045523A (ja) * 2011-08-22 2013-03-04 Koito Mfg Co Ltd 平面光源を備えた車両用灯具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013148A1 (fr) * 1989-04-20 1990-11-01 Cambridge Research And Innovation Limited Dispositifs electroluminescents
FR2696816A1 (fr) * 1992-10-12 1994-04-15 Valeo Vision Dispositif d'éclairage ou de signalisation à décharge luminescente pour véhicule automobile.
EP0611040A1 (fr) * 1993-02-10 1994-08-17 The Standard Products Company Bande électroluminescente

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013148A1 (fr) * 1989-04-20 1990-11-01 Cambridge Research And Innovation Limited Dispositifs electroluminescents
FR2696816A1 (fr) * 1992-10-12 1994-04-15 Valeo Vision Dispositif d'éclairage ou de signalisation à décharge luminescente pour véhicule automobile.
EP0611040A1 (fr) * 1993-02-10 1994-08-17 The Standard Products Company Bande électroluminescente

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999040364A1 (fr) * 1998-02-05 1999-08-12 Zumtobel Staff Gmbh Systeme d'eclairage
US6639350B1 (en) 1998-02-05 2003-10-28 Zumiobel Staff Gmbh Illumination arrangement
EP1361391A2 (fr) 2002-05-08 2003-11-12 Zumtobel Staff GmbH Lampe pour l'éclairage d'un poste de travail
EP1361391A3 (fr) * 2002-05-08 2006-04-12 Zumtobel Staff GmbH Lampe pour l'éclairage d'un poste de travail
CN101095012B (zh) * 2004-11-03 2010-11-10 阿尔斯托姆科技有限公司 预混合式烧嘴
WO2011101268A1 (fr) * 2010-02-19 2011-08-25 Valeo Vision Système optique de véhicule automobile
FR2956720A1 (fr) * 2010-02-19 2011-08-26 Valeo Vision Systeme optique de vehicule automobile
CN102782400A (zh) * 2010-02-19 2012-11-14 法雷奥照明公司 用于机动车辆的光学系统
US8998467B2 (en) 2010-02-19 2015-04-07 Valeo Vision Optical system for a motor vehicle
CN102782400B (zh) * 2010-02-19 2015-11-25 法雷奥照明公司 用于机动车辆的光学系统
JP2013045523A (ja) * 2011-08-22 2013-03-04 Koito Mfg Co Ltd 平面光源を備えた車両用灯具

Also Published As

Publication number Publication date
ITTO950639A0 (it) 1995-07-28
IT1280453B1 (it) 1998-01-20
ITTO950639A1 (it) 1997-01-28

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