| 摘要 |
An LED lamp comprises a heat sink and a plurality of lighting units. The heat sink comprises a base plate, a plurality of fins extending upwardly from a top surface of the base plate, and a plurality of supporters extending downwardly from a bottom surface of the base plate. The supporters are inclined to a same direction. The lighting units are mounted on the supporters, respectively, to illuminate a same direction, which is toward a vehicle moving in a tunnel and toward the LED lamp.
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