| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrodeless discharge lamp lighting device capable of dimly light an electrodeless discharge lamp in a stable state even when the temperature is low, and a luminaire. <P>SOLUTION: This electrodeless discharge lamp lighting device is equipped with a power conversion circuit 9 for outputting a high frequency voltage by receiving power supply from a dc power supply, an induction coil 5 connected between the output ends of the power conversion circuit 9 and disposed close to the electrodeless discharge lamp 6 in which a discharge gas is filled in a bulb, a frequency control circuit 12 for flickering the electrodeless discharge lamp 6 by alternately switching a lighted period for setting the magnitude of the voltage between both ends of the induction coil 5 so as to light the electrodeless discharge lamp 6 and a non-lighted period for setting the magnitude so as not to light it, and an ambient temperature detecting circuit 44 which is a temperature detecting means to detect the ambient temperature of the electrodeless discharge lamp 6. A time occupancy rate lowering means composed of a PWM oscillating circuit 13 and an on-duty setting circuit 41 decreases a restrike starting time occupancy rate by raising the lighted period when the temperature detected by the ambient temperature detecting circuit 44 is low. <P>COPYRIGHT: (C)2009,JPO&INPIT |
