EP 2400817 A1 20111228 - Color-temperature adjustable lighting device
Title (en)
Color-temperature adjustable lighting device
Title (de)
Beleuchtungsvorrichtung mit einstellbarer Farbtemperatur
Title (fr)
Dispositif d'éclairage réglable selon la température des couleurs
Publication
Application
Priority
- TW 99212156 U 20100625
- TW 100207652 U 20110429
Abstract (en)
A color-temperature adjustable lighting device includes a lighting part and a switching part. The lighting part at least includes a first light emitting diode unit for outputting light with a first color temperature and a second light emitting diode unit for outputting light with a second color temperature. The switching part is coupled with a power source. By changing the number of times the switching part is turned on, the light with desired color temperature and luminance is produced by the lighting part according to the user's requirements.
IPC 8 full level
H05B 33/08 (2006.01); H05B 44/00 (2022.01)
CPC (source: EP US)
H05B 45/28 (2020.01 - EP US)
Citation (search report)
- [XY] US 6241362 B1 20010605 - MORRISON DAVID J [US]
- [X] US 4675575 A 19870623 - SMITH ELMER L [US], et al
- [X] US 2003048632 A1 20030313 - ARCHER ROY [US]
- [Y] US 3816739 A 19740611 - STOLOV M
- [Y] US 2010156281 A1 20100624 - YOU CHUN-GI [KR]
- [Y] US 2007086755 A1 20070419 - DANG PHU [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11004589 A 20110606; JP 2011003046 U 20110531