Patent ID: 8310166
Filing Date: 2012-11-13
Classification: F21S,F21W,H05B

Abstract:
1. A lighting device, comprising: a switching element for turning on/off a commercial power supply supplied as a power supply for a lighting load, a power supply phase detector for detecting a phase of the commercial power supply so as to perform a phase control for the lighting load; a load controller for determining a conduction angle of the switching element by receiving an output of the power supply phase detector, in which a signal to be output at an arbitrary conduction angle to the switching element from the load controller performs a lighting control for the lighting load; and a load lighting detector for detecting whether the lighting load is turned on or not; wherein the load controller comprises a determination unit for determining a type of the lighting load by a signal from the load lighting detector, wherein the load controller switches operation modes depending on the type of the lighting load according to a result determined by the determination unit during a predetermined period after turning on the power supply.