EP 2135001 A1 20091223 - COLOR-VARIABLE LED LIGHT, PARTICULARLY FOR LIGHTING THE INTERIOR OF VEHICLES
Title (en)
COLOR-VARIABLE LED LIGHT, PARTICULARLY FOR LIGHTING THE INTERIOR OF VEHICLES
Title (de)
FARBVERSTELLBARE LED-LEUCHTE, INSBESONDERE ZUR FAHRZEUGINNENBELEUCHTUNG
Title (fr)
LAMPE À DEL DE COULEUR VARIABLE, DESTINÉE EN PARTICULIER À L'ÉCLAIRAGE INTÉRIEUR DE VÉHICULES
Publication
Application
Priority
- EP 2008054550 W 20080415
- EP 07106236 A 20070416
- US 91218407 P 20070417
- EP 08749563 A 20080415
Abstract (en)
[origin: WO2008125672A1] The invention relates to an LED light, particularly a reading or seat lamp for vehicles such as travel coaches or airplanes, said light being equipped with a housing (36), a plurality of LEDs comprising first LEDs (16) that transmit electromagnetic radiation in a first wavelength range, and an activation unit (12) for activating the first LEDs (16). The LED light further comprises a conversion material (24) that, upon excitation by at least part of the electromagnetic radiation from the first LEDs (1.6), emits electromagnetic radiation in a conversion wavelength range that is in the visible spectrum range and is at least partially different from the first wavelength range. The LEDs further comprise second LEDs (18) that, in order to shift the color of the electromagnetic radiation emitted by the conversion material (24) upon excitation by the electromagnetic radiation emitted by the first LEDs (16), emit electromagnetic radiation in a second wavelength range. The second LEDs (18) may be selectively activated by the activation unit (12) in addition to the first LEDs (16), wherein the electromagnetic radiation from the second LEDs (18) is at least partially in the visible spectrum range and is at least partially different from the wavelength range of the first LEDs (16) and passes the conversion material (24) substantially without exciting said conversion material and/or wherein the electromagnetic radiation of the second LEDs (18) additionally excites the conversion material (24) to emit electromagnetic radiation, the wavelength range of which is inside or outside of the conversion wavelength range.
IPC 8 full level
B60Q 3/00 (2006.01); B60Q 3/02 (2006.01); F21K 7/00 (2006.01); F21K 99/00 (2010.01); H01L 33/00 (2006.01); H05B 33/08 (2006.01); H05B 44/00 (2022.01); F21W 101/08 (2006.01); F21W 106/00 (2018.01)
CPC (source: EP US)
B60Q 3/44 (2017.01 - EP US); B60Q 3/47 (2017.01 - EP US); B60Q 3/68 (2017.01 - EP US); F21K 9/00 (2013.01 - EP US); H05B 45/20 (2020.01 - EP US); F21W 2106/00 (2017.12 - EP US); H01L 25/0753 (2013.01 - EP US); H01L 2924/0002 (2013.01 - EP US)
Citation (search report)
See references of WO 2008125672A1
Citation (examination)
JP 2004080046 A 20040311 - MATSUSHITA ELECTRIC IND CO LTD
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008125672 A1 20081023; EP 2135001 A1 20091223; US 2010102736 A1 20100429; US 8118441 B2 20120221
DOCDB simple family (application)
EP 2008054550 W 20080415; EP 08749563 A 20080415; US 59386508 A 20080415