| 摘要 |
PURPOSE:To control the illuminance by an illuminator, based on the lightness of the detection of a person. CONSTITUTION:In the case of having changed an operation part 1 over to 'automatic', an illuminance detector 2 detects the lightness and an illuminance judging part 5 compares it with the data read out of memory part 4, and if it is below the minimum illuminance, an illuminance controller 7 controls the illuminator and adjusts it into the minimum illuminance, and in the case that it is above the said minimum illuminance, the controller 7 turns off the power source of the illuminator. And the signal from the person detector 3 is input into a person descriminator 6, and in the case that it is judged to be a person, if the lightness is below the specified illuminance the detector 6 turns on the power source of the illuminator through an illuminance controller 7, and next, the lightness is adjusted to be required illuminance by increasing the supplied power gradually. In the case that the operation part 1 is set to 'manual', a power switch 12 and an illuminance adjusting nob 13 are to be operated manually to adjust the illuminance properly. |
