| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device which suppresses electrical stress applied to a light source at the time of intermittent lighting, and a lighting fixture using the lighting device. <P>SOLUTION: Even during a period T1 when the light source is turned off in the intermittent lighting operation, a turning-off voltage V1 has the same direction as that of a lighting voltage V2 outputted when the light source is turned on, and also has a voltage value low in such a degree that no current flows to the light source. Since a capacity component of the light source is charged in advance by this turning-off voltage V1, an inrush current generated when the light source is started to be turned on is suppressed and the electrical stress applied to the light source is suppressed as compared to a case where an input voltage Vx to the light source during the period T1 is made 0 V. <P>COPYRIGHT: (C)2013,JPO&INPIT |
