| 摘要 |
An LED lamp includes a lamp base (10), a first heat sink (20) mounted on the lamp base, a plurality of second heat sinks (40) attached to a periphery of the first heat sink and a plurality of LED modules (30) respectively attached to the second heat sinks. The lamp base defines a plurality of vents (166) therein. The first heat sink includes a cylinder (22) at a centre thereof. The cylinder has a through hole (25) defined therein, which communicates with the vents and cooperates with the vents to form an air passage communicating with ambient air. A thickness of each of the second heat sinks is gradually varied along a height direction of the each of the second heat sinks. |
