Title:
DISCHARGE LAMP LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/129490
Kind Code:
A1
Abstract:
The capacitor (42(C1)) of a first bootstrap circuit (4) for sustaining in on state the first switching element (61) on one side, out of two switching elements arranged on the high potential side of a first DC voltage (V1), in on state is charged with a second DC voltage (V2) and further supplied with a charging current from a third DC voltage (V3) on the secondary winding (n2) side of a transformer (22). The first switching element (61) is sustained in on state for a long time by charging of the both DC voltages, and the polarity of a voltage applied to a discharge lamp (8) can be fixed to one side polarity close to DC output operation.
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Inventors:
NUKISATO YASUHIRO (JP)
OHSAWA TAKASHI (JP)
OHSAWA TAKASHI (JP)
Application Number:
PCT/JP2007/052379
Publication Date:
November 15, 2007
Filing Date:
February 09, 2007
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NUKISATO YASUHIRO (JP)
OHSAWA TAKASHI (JP)
NUKISATO YASUHIRO (JP)
OHSAWA TAKASHI (JP)
International Classes:
H05B41/24
Foreign References:
| JP2000166258A | 2000-06-16 | |||
| JP2002330064A | 2002-11-15 | |||
| JP2002270388A | 2002-09-20 |
Attorney, Agent or Firm:
TAZAWA, Hiroaki et al. (7-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, JP)
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