| 摘要 |
PURPOSE:To suppress the dispersion of threshold values of automatic lights-on/ out by inspecting as a system of a light control device. CONSTITUTION:An emitting unit 1 is set above a photosensitive unit 2 on an instrument and a start switch 32 is depressed. An LED11 is dimmed by one lux by using a memory 31, and only the dimming is continued until 50 luxes equiequivalent are attained. If head lights are lighted during this period, this car has a large drift to the high sensitivity side and is judged as NG. When the data of the memory 31 becomes 50 luxes equivalent, the fact that the light quantity of the emitting unit 1 has entered the lights-on threshold value allowance range of the head lights is reported by using a buzzer 36 and a lamp 38. The control section 30 further continues the dimming by one lux equivalent until 29 luxes are attained. If the head lights are lighted while the buzzer 36 is ringing during this period, the inspector judges that this car is OK. |
