| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp controller capable of appropriately performing turning-on/turning-off of a lamp.SOLUTION: A lamp controller 13 comprises: a voltage detection unit 32 for detecting voltage varying depending on illumination intensity; and a control unit 34 for performing automatic control on turning-on and turning-off of a lamp 12 so as to turn on the lamp 12 when detection voltage detected by the voltage detection unit 32 shows illumination intensity lower than a turning-on threshold and turn off the lamp when the detection voltage shows illumination intensity equal to or higher than a turning-off threshold, where the turning-off threshold is equal to or higher than the turning-on threshold. The control unit 34 changes the turning-off threshold or the turning-on threshold when having accepted an instruction to stop the automatic control. |
