| 摘要 |
PURPOSE:To enhance usability of illumination by a room lamp by causing a monopulse generator to generate a constant output signal for a predetermined period of time through a light pushing operation of a pushbotton switch so as to keep the room lamp on for a predetermined period of time. CONSTITUTION:A room lamp 1 is connected at one end thereof to a power source 3 through a fuse 2 and at the other end to a common terminal of a mode selector switch 4 for selecting one of three off, on and door modes. A door contact is grounded through a room lamp control circuit 5 adapted to be actuated by door switches 6. A lamp control circuit 9 is connected between the grounded terminal of the room lamp 1 and the ground and is actuated, when a monopulse generator 8 generates a certain output signal for a predetermined period of time in accordance with an output of a pushbotton switch 7 which is a contact signal generated therefrom simply through touching by a driver, so as to keep the room lamp 1 on for a predetermined period of time. |
