| 摘要 |
The objective of the present invention is to provide an illumination device that has a wide input-voltage tolerance range and that reduces stress applied to a lighting circuit and a control unit. In order to achieve the aforementioned objective, this illumination device (1) is provided with: a lighting circuit (6) that lights up LEDs (5a, 5b); a control circuit (7); and a switching power supply unit (18). When the surrounding brightness becomes darker than a predetermined value, the control circuit (7) controls the lighting circuit (6) so as to light up the LED (5a) with power from a commercial power supply. When a lighting operation is performed by using an operation unit, the control circuit (7) controls the lighting circuit (6) so as to light up the LED (5b) with power from a battery (12). The switching power supply unit (18) converts, by performing switching, a voltage which has been input from an electric outlet via a plug into a direct-current voltage having a predetermined voltage value, and supplies the same to the lighting circuit (6) and the control circuit (7). |
