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目前我国铁路上广泛使用着两种色灯信号机,一种是采用单独颜色透镜和光源分开的多灯信号机,也称为透镜式色灯信号机。这种信号机是用继电器转换接点的方法,选择其一种信号灯光。这种方法虽然控制简单,但由于采用了分离透镜和光源,导致机构庞大、调整困难、维修量大等弊病。另一种是把不同颜色的滤色片,放入光源和透镜系统之间,用一个极性继电器的活动机构,带动滤色片来实现灯光颜色转换的单灯信号机,也称为探照式色灯信号机。探照式色灯
At present, China’s railway is widely used two kinds of color light signal machine, one is the use of separate color lens and light source separate light signal, also known as the lens color light signal. This signal is the relay contact method, choose a signal light. Although this method is simple to control, but due to the use of a separate lens and light source, resulting in a large mechanism, adjustment difficulties, maintenance and other ills. The other is the different colors of the filter, into the light source and the lens system, with a polarity relay of the moving body, driven by color filters to achieve light color conversion single light signal, also known as the search Color light signal machine. Search-style color light