Head lamp intensifying unit structure for speed-inducing locomotive

The head lamp intensifying unit structure includes mainly voltage comparing circuit, wave band type voltage regulating circuit and relay. The voltage comparing circuit detects the charge voltage variance of the power generator during speed variation to control the relay, so that the AC voltage is supplied to the head lamp of the locomotive via different connection terminals of the voltage regulating circuit and the head lamp can maintain certain brightness while preventing burn caused by overhigh AC voltage. 本发明公开了一种速度感应式机车大灯增光器结构，主要包含电压比较电路、波段式电压调节电路及继电器，藉由电压比较电路检测机车于高、低速时的发电机充电电压变化，以控制继电器的启闭，使AC电压由与电压调节电路的不同连接端以调整机车大灯的供应电压，使机车大灯于高、低速时得以保持一定的亮度，且防止大灯因AC电压过高而烧毁。