| 摘要 |
PURPOSE:To inform the degree of danger to the subsequent vehicle, installing pressure response control circuit to change the electric power to be supplied to the light source of the brake lamp, changing quantity of light of the brake lamp by responsing to pressing force on the brake pedal. CONSTITUTION:A tail lamp 1 is connected to the power source through the control circuit 2, with a brake pedal 21 depressed, the tail lamp 1 is turned on by a switch 22, the change of degree of braking to correspond to depressing force of the pedal 21 is applied to the control circuit 2 by an inducing element 23, supply electric power to the tail lamp 1 is controlled to change the brightness. Furthermore installing a circuit to control supply electric power to the tail lamp 1 by using an inducing element to respond the brightness in a circumference, the brightness is changed in accordance with the brighness in the circumference. Thus, changing condition of degree of braking of the vehicle will be informed to the subsequent vehicle, furthermore the standard brightness of the tail lamp 1 is changed in accordance with the brightness in a circumference, and it can be done to permit to confirm the degree of danger to the subsequent vehicle, responding the change of the brightness due to the head light of the subsequent vehicle. |
