Patent ID: 9247604
Filing Date: 2016-01-26
CPC Classification: H05B

Claim Text:
1. A lighting device comprising: an illumination unit including two or less LED light sources, wherein the illumination unit uses the two or less LED light sources to emit light of a short wavelength band and light of a long wavelength band; and an output varying unit that functions to vary an output of at least the long wavelength band light, wherein when the output varying unit receives a varying signal, the output varying unit functions to decrease the output of at least the long wavelength band light, wherein the lighting device further comprises: a main power supply unit that supplies power to the illumination unit; and a backup power supply unit that supplies power to the illumination unit during a backup situation in which the supply of power from the main power supply unit is interrupted, wherein the output varying unit receives the varying signal indicating that the power supplied to the illumination unit has been switched from the power supplied by the main power supply unit to the power supplied by the backup power supply unit, and the output varying unit functions to decrease the output of at least the long wavelength band light when receiving the varying signal.