flashing light; signal lamp
Refers to a light that flashes on and off, often used for signaling or warning. Related to 閃光信号 (flashing light signal).
See also: 閃光信号
踏切の閃光灯が点滅している。
The flashing light at the railroad crossing is blinking.
Compound of 閃光 (flash of light) and 灯 (lamp, light).