| 摘要 |
A brake lamp device operatively connected to the brake of a car used to decrease the speed of the running car or stop the car, which sequentially turns on a plurality of brake lamps in response to pressure applied to a brake pedal. The brake lamp device includes a plurality of brake lamps attached to the rear surface of the car at either side of the car, a diaphragm hydraulically connected to a master cylinder of the car generating a brake driving pressure, the diaphragm being applied with the brake driving pressure, and a pressure sensor unit adapted to receive the brake driving pressure via the diaphragm, thereby sequentially turning on the brake lamps in accordance with the brake driving pressure. The brake lamp device can surely inform to drivers of following cars of whether the turning-on of the brake lamps is associated with a decrease in the speed of the car or an abrupt stopping of the car. Accordingly, it is possible to surely inform of the braking state of the car so that drivers of following cars can cope with the braking state of the car.
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