| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, if a cover member is provided for covering an electrode member and mounted to a circuit board and a push-button is provided not in a lid member but on a top face of the cover member, relative positions of the electrode member and the push-buttons are unlikely to be dislocated but since the cover member becomes relatively small, if a finger slips and exceeds the push-button when pressing the push-button, the finger may get out of the top face of the cover member and touch an electronic component on the circuit board.SOLUTION: A cover member which covers a pair of electrode members is mounted to the circuit board, and the push-button is held on a top face of the cover member, and the cover member includes a wall part for preventing a finger from getting out of the top face of the cover member over the push-button when the push-button is pressed with the finger. |
