Patent attributes
A lighting device for dielectric barrier discharge lamp according to the embodiment of the present invention includes a pulse number judging circuit 16. The judging circuit 16 is supplied with a dimming control signal LCS designating a dimming ratio of a discharge lamp as an input signals and judges a number of the drive signal pulses per unit time corresponding to the dimming ratio from the dimming control signal LCS. The judging circuit 16 then outputs the result as the pulse number setting signal. The lighting device includes a drive signal generating signal 18, which is supplied with the pulse number setting signal and outputs the drive signal pulse of the prescribed number of pulse per unit time designated by the number of the pulse setting signal. The lighting device further includes an inverter circuit 10, which is supplied with the output of the drive signal generating circuit 18 and generates HF pulse for driving the dielectric barrier discharge type fluorescent lamp.
