| 摘要 |
PURPOSE:To securely let a following vehicle, etc. know that a vehicle is stopping by lighting a brake lamp during the operation of an auto-stop valve, either continuously or by on-off means selectively. CONSTITUTION:A brake lamp 1 lights when a relay 2 is electrified. A switching transistor 3 which controls electrification to the relay 2, is controlled in its opening and closing by a signal from an AND circuit 4. On the other hand, a solenoid valve operating signal IN1 from an auto-stop valve and a lighting signal IN2 from an oscillation circuit 10 consisting of NAND circuits 5, 6, a NOT circuit 7, a resistor 8, and a capacitor 9, are inputted into the AND circuit 4. Also, a lighting selecting signal IN3 for making continuous lighting or on-off lighting selectively carried out, is inputted into the NAND circuit 5. This selection is carried out through a switch means such as a manual switch, etc. |
