DISCHARGE LAMP LIGHTING DEVICE

PROBLEM TO BE SOLVED : To provide a discharge lamp lighting device capable of lighting an exterior surface electrode type fluorescent lamp at high brightness without flicker and lighting even in lighting control without flicker. SOLUTION : The discharge lamp lighting device lights the exterior surface electrode type fluorescent lamp using rare gas by applying high frequency voltage from a high frequency power source circuit to the exterior surface electrode the exterior surface electrode. The exterior surface electrode fluorescent lamp has a gas pressure of the rare gas of 120 torr or more, and the frequency of lamp current supplied to the exterior surface electrode type fluorescent lamp is set in a range of 24-34 kHz.