EP 2381746 A2 20111026 - Discharge lamp lighting device and illumination fixture using the same
Title (en)
Discharge lamp lighting device and illumination fixture using the same
Title (de)
Entladungslampen-Beleuchtungsvorrichtung und Beleuchtungseinrichtung damit
Title (fr)
Dispositif d'éclairage d'une lampe de décharge et accessoire d'éclairage
Publication
Application
Priority
JP 2010100261 A 20100423
Abstract (en)
[Object] To provide a discharge lamp lighting device capable of reducing electric stress that is placed on each discharge lamp at the start time, and an illumination fixture using the same. [Means for Settlement] A plurality of discharge lamps La are lit by AC power to which DC power of a DC power source E is converted by an inverter circuit including a switching part 1 and a resonant part 2. The discharge lamp lighting device is provided with: a drive part 3 that drives respective switching elements Q1 and Q2 constituting the switching part 1; a control part 4 that controls the drive part 3; and a lighting detection part 5 that detects the start of a semi-lighting state where a part of the plurality of discharge lamps La is lit. When the lighting detection part 5 detects the start of the semi-lighting state, the control part 4 controls the drive part 3 so as to sufficiently increase a frequency of the AC power supplied to each of the discharge lamps La to decrease an inter-terminal voltage of each of the discharge lamps La, and thereby electric stress placed on each of the discharge lamps La is reduced.
IPC 8 full level
H05B 41/282 (2006.01); H05B 41/298 (2006.01)
CPC (source: EP)
H05B 41/2827 (2013.01); H05B 41/2988 (2013.01)
Citation (applicant)
JP 2008218333 A 20080918 - MATSUSHITA ELECTRIC WORKS LTD
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 2381746 A2 20111026; EP 2381746 A3 20160928; JP 2011233266 A 20111117
DOCDB simple family (application)
EP 11162647 A 20110415; JP 2010100261 A 20100423