| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an illumination system which makes it possible to obtain relaxing effect during sleep and the like and is capable of securing high safety.SOLUTION: An illumination system 1 comprises an LED module 110 and a circuit part 15. The circuit part 15 includes a power supply drop monitoring circuit 154. When a user performs on/off continuous operation through a wall switch 2, the power supply drop monitoring circuit 154 in the circuit part 15 selectively supplies power to an output current limitation circuit 155. Thereby, a system 1 being lighting in a mode 1 executes light-emitting operation by lighting the LED module 110 in a mode 2, where all light flux of the LED module 110 in the mode 2 is equal to or smaller than 10% of that in the mode 1.</p> |
