Patent ID: 7633236
Filing Date: 2009-12-15
Classification: H05B,Y02B

Abstract:
1. A lamp lighting apparatus comprising: a glass tube; electrodes provided in an axis direction of the glass tube; and an inverter circuit which apply a high voltage of an alternating current to the electrodes, wherein the inverter circuit includes an inverter control circuit which outputs a switching element operating signal; a switching element circuit which converts a direct current voltage into an alternating voltage by ON/OFF controlling the switching element according to the switching element operating signal; and a boosting transformer which boosts the alternating voltage from the switching circuit, wherein a burst light control is carried out, by repeating a cycle of lighting and lighting off of the lamp and controlling a ratio of a lighting period and a non-lighting period, and wherein a frequency of the switching element operating signal is higher than that in a steady state operating period, during at least part of period from a beginning of lighting according to the burst light control until the lamp emits light entirely, approximately in the axis direction of the lamp.