| 摘要 |
PROBLEM TO BE SOLVED: To reduce the wasteful power consumption and minimize the space occupied by parts by using a hydraulic operating contact as a means for interrupting electric equipment circuit such as lamp having a large power consumption. SOLUTION: When a key switch KS is switched from start state to ON state to supply a power to a control board 12, a hydraulic operating contact exciting coil M6C, etc., is excited by the signal from the control board 12. Consequently, the contact M6 of a hydraulic operating contact is closed to supply a power to a hydraulic circuit, and the power is also supplied to a lamp circuit having a large power consumption through the contact M6 of the hydraulic operating contact. When no operation is performed for a fixed time in this state, the signal from the control board 12 to the hydraulic operating contact exciting coil M6C, etc., is cut, and the contact M6, etc., of the hydraulic operating contact is closed. The power supply to the hydraulic circuit is thus interrupted, and the power to the lamp circuit having the large power consumption is also interrupted. |
