| 摘要 |
An exemplary LED lamp includes a heat sink, an LED module mounted on the heat sink and a lens covering the LED module. The heat sink has a top surface and a bottom surface opposite to the top surface. The LED module is mounted on the top surface of the heat sink. A waterproof groove is defined in the top surface of the heat sink. The groove has an inner wall adjacent to the LED module and an outer wall far away from the LED module. The inner wall is higher than the outer wall. The lens has a downwardly extending flange inserted into the groove. A waterproof ring is received in the groove and pressed by the flange.
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