| 摘要 |
A power supply apparatus supplies power to at least one lamp and includes: a controller which generates on-off signals, which indicate on or off states of each lamp driving circuit based on at least one signal value, which indicates a moving body in a surrounding space, and at least one signal value, which indicates brightness of the surrounding space; and a switch which forms a switching operation to allow or block power supply to each lamp driving circuit according to the on-off signals; and a plurality of the lamp driving circuits which convert current, supplied by the switching operation of the switch, into driving current for at least one lamp. |
