EP 2339896 B1 20170920 - High pressure discharge lamp lighting device and illumination fixture
Title (en)
High pressure discharge lamp lighting device and illumination fixture
Title (de)
Beleuchtungsvorrichtung für eine Hochdruckentladelampe und Beleuchtungshalterung
Title (fr)
Dispositif d'éclairage par lampe à décharge haute pression et accessoire d'illumination
Publication
Application
Priority
JP 2009291315 A 20091222
Abstract (en)
[origin: EP2339896A2] [Object] To provide a high pressure discharge lamp lighting device and an illumination fixture that hardly go out immediately after start of a steady operation. [Means for Settlement] In starting a high-pressure discharge lamp, a starting operation P1 of outputting a high voltage necessary for start of lighting to the high-pressure discharge lamp is performed and then, in a determining operation P2, a voltage V1a between both ends of the high-pressure discharge lamp is compared with a predetermined start determining voltage. When the voltage V1a between both ends of the high-pressure discharge lamp is smaller than the start determining voltage in the determining operation P2, the starting operation P1 is performed again and then, a steady operation of keeping lighting of the high-pressure discharge lamp is performed. Since a temperature of each electrode of the high-pressure discharge lamp can be increased in the starting operation P1 before a steady operation P3, as compared to the case the steady operation P3 is started immediately after the determining operation P2, the high-pressure discharge lamp hardly goes out immediately after the start of the steady operation P3.
IPC 8 full level
H05B 41/288 (2006.01)
CPC (source: EP)
H05B 41/2887 (2013.01)
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
DOCDB simple family (publication)
EP 2339896 A2 20110629; EP 2339896 A3 20141231; EP 2339896 B1 20170920; JP 2011134503 A 20110707
DOCDB simple family (application)
EP 10195984 A 20101220; JP 2009291315 A 20091222