| 摘要 |
PROBLEM TO BE SOLVED: To provide a starting circuit of a lighting device for a high-pressure discharge lamp with an auxiliary light source capable of attaining the compactness of a lighting device and cost reduction. SOLUTION: The starting circuit 62 is formed in such a manner that: a diode 80 is installed in a forward direction in one output line 76 wherein a main lighting circuit 60, the high-pressure discharge lamp 12, and the auxiliary light source 14 are electrically connected; one end of a capacitor 86 is connected with a cathode side of the diode 80; one end of a secondary winding 90 of a step-up transformer 84 is connected with an anode side of the diode 80; the other end is connected with the other end of the capacitor 86; and a high-frequency voltage generation circuit 82 for generating a high-frequency voltage in cooperation with primary windings 88, 89 of the step-up transformer 84 is arranged. COPYRIGHT: (C)2010,JPO&INPIT |
