EP 2503850 A3 20140611 - Illumination fixture
Title (en)
Illumination fixture
Title (de)
Beleuchtungshalterung
Title (fr)
Appareil d'éclairage
Publication
Application
Priority
JP 2011062449 A 20110322
Abstract (en)
[origin: EP2503850A2] [Object] To provide an illumination fixture capable of reducing power loss and improving convenience of a lighting control operation. [Means for Settlement] There are provided a plurality of light source parts 1 each including a light-emitting diode 10, a triac TR1 serially connected to a commercial power source AC1, a dimmer 2 for controlling the triac TR1 to make a conduction angle of a power source voltage of the commercial power source AC1 variable, and a current adjusting part 3 for keeping a holding current flowing through the triac TR1 to be a certain value or larger in a conductive period of the triac TR1, and the current adjusting part 3 includes a resistor R13 that is connected to each of the light source parts 1 in parallel when the power source voltage of the commercial power source AC1 falls below a predetermined threshold value, and is released in connection to each of the light source parts 1 when the power source voltage of the commercial power source AC1 exceeds the predetermined threshold value, and a signal outputting part 30 for outputting a signal to an external device according to an input current I1 inputted to the current adjusting part 3.
IPC 8 full level
H05B 44/00 (2022.01)
CPC (source: EP US)
H05B 45/37 (2020.01 - EP US)
Citation (search report)
- [A] US 2007182338 A1 20070809 - SHTEYNBERG ANATOLY [US], et al
- [A] US 2010289428 A1 20101118 - FRAZIER JOSEPH E [US], et al
- [A] RAND D ET AL: "Issues, Models and Solutions for Triac Modulated Phase Dimming of LED Lamps", POWER ELECTRONICS SPECIALISTS CONFERENCE, 2007. PESC 2007. IEEE, IEEE, PISCATAWAY, NJ, USA, 17 June 2007 (2007-06-17), pages 1398 - 1404, XP031218489, ISBN: 978-1-4244-0654-8
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)
EP 2503850 A2 20120926; EP 2503850 A3 20140611; EP 2503850 B1 20160316; JP 2012199077 A 20121018
DOCDB simple family (application)
EP 12159966 A 20120316; JP 2011062449 A 20110322