| 摘要 |
A lamp lighting apparatus includes an arc spot movement detector ( 5 ) for monitoring an DC voltage Vb which is the bus voltage of an inverter ( 3 ), and for detecting a movement of an arc spot which appears before a lamp 1 enters a state where human beings can recognize a flicker of the lamp ( 1 ), and, when the arc spot movement detector ( 5 ) detects a movement of the arc spot, controls a switch ( 2 a) of a DCDC converter ( 2 ) so as to suppress the movement of the arc spot.
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