| 摘要 |
PURPOSE: A day and night safety indicator for distribution is provided to prevent safety accidents from a light plane and a helicopter in advance. CONSTITUTION: A spherical solar cell(111) is formed on the top of an upper hemisphere(110). A plurality of sound sensors(140) and illumination sensors(150) are formed on the bottom of the upper hemisphere. An overhead wire(101) is inserted between the upper hemisphere and a lower hemisphere(120). A fixing flange(130) is formed on the outside of the junction of the upper hemisphere and the lower hemisphere. An operation control unit operates a light emitting diode according to the size of the vibration and illumination by including a controller. |
