| 摘要 |
PURPOSE: To perform a lighting with good operability at an intended illuminance by providing a vibration sensor for detecting the level of vibration, a control means for controlling the lighting/extinguishment of a lighting means on the basis of the output and also controlling the illuminance of the lighting means. CONSTITUTION: A vibration sensor 2 is firmly mounted on a switch part 1 so that the detecting direction of vibration or the sensing axis is vertical to the switch part 1, and detects the vibration added to the part 1 and outputs an electric vibration signal. A control part 3 detects the feeble current carried to the part 1 when a power source is supplied from the outside, and compares this current with a specified current threshold, thereby ON/OFF-controlling a bulb 4. The part 3 detects the voltage value of the control signal inputted from the sensor 2 and compares this detection level with, for example, two vibration thresholds, thereby controlling the brightness of the bulb 4. Thus, the bulb 4 can be lighted at an intended illuminance by a single operation, and the operability can be improved. |
