| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp fitting which can suppress and control an output current appropriately according to the ambient temperature independent of variation of the output voltage to a load.SOLUTION: A lamp fitting 1 comprises: a load 10; a current output circuit 22 which outputs a current to be supplied to the load 10; a corrective calculation portion 26 which outputs correction signals for correcting the output current to the current output circuit 22; a temperature detection portion 32 detecting an ambient temperature; and a voltage detection portion 30 which detects an output voltage to the load 10. The corrective calculation portion 26 corrects an ambient temperature detected by the temperature detection portion 32 on the basis of the output voltage detected by the voltage detection portion 30 and outputs correction signals on the basis of the ambient temperature after the correction. |
