| 摘要 |
<p>A lighting device includes: a lighting circuit switching an input from a power source by a switching element and outputting a smoothed output to a solid-state light emitting element; and a dimming control unit controlling the switching element based on a control signal to adjust an output to the solid-state light emitting element. The dimming control unit has: a driving control unit performing a PWM control on the switching element; and a burst control unit receiving a feedback signal depending on the output to the light emitting element and providing a stop period in the PWM control based on a threshold value and magnitudes of the feedback signal and a reference signal.</p> |
