High pressure discharge lamp lighting device, and illumination fixture and illumination system using the same

摘要

[Object] To provide a high pressure discharge lamp lighting device which can determine lighting of a high-pressure discharge lamp before shifting from a starting state to a normal lighted state, insert an operating period for heating electrodes and sufficiently heat the electrodes of the high-pressure discharge lamp when it is determined that the high-pressure discharge lamp is lighted, thereby shifting the lamp to the normal lighted state in a stable arc discharge state. [Means for Settlement] A first phase A1 as a period in which a starting circuit 2 generates a high voltage for causing electric breakdown between electrodes of the high-pressure discharge lamp DL, a second phase A2 as a period in which an operation of heating the electrodes of the high-pressure discharge lamp DL is performed after the electric breakdown and a third phase A3 as a period in which an operation of stably lighting the high-pressure discharge lamp DL is performed are provided, and an output detection part 3 performs a lighting determination operation at a timing before shifting to the third phase A3 and, when it is determined that the lamp is lighted, the second phase A2 is inserted.