| 摘要 |
The bar has an LED-signaling unit (10) generating a rotating or flashing warning signals from visible light, and a rotatable mirror (18) and an infrared emitting LED (16) generating a rotating signal from infrared light. The mirror and infrared emitting LED generating the rotating signal from the infrared light are separated from the LED-signaling unit for generating rotating or flashing warning signals from the visible light. The infrared emitting LED is firmly arranged relative to the bar, and a modulating unit modulates the strength of the rotating signal provided from the infrared light. |
