| 摘要 |
PURPOSE: A driver is provided to fasten or unfasten a screw in case of power failure without a lighting device by emitting light from a handle. CONSTITUTION: A driver(10) is composed of a handle(10a) and a driver shaft(10b). A space part(11) is formed in the inner side of the handle. A lighting unit(12) and a power source(13) are arranged in the space part. Light emitting units(14) are formed in the driver shaft except the center part(A) and the edge part(B) and emit light. A cap(15) is attached on the other end of the handle and opens and closes the space part. |
