| 摘要 |
An LED illumination device comprises a base, at least one LED light source and a heat dissipation module. The base has a first surface and a second surface opposite to the first surface. The LED light source is located on the second surface of the base. The heat dissipation module is thermally connected to the first surface of the base. The heat dissipation module has a staff and a spiral heat sink, which is attached to the staff. The staff is mounted on the base and the spiral heat sink is mounted on the staff. The spiral heat sink generates airflow through the LED light source when the spiral heat sink and the staff are rotated relative to the base, whereby heat dissipation efficiency of the LED light source is optimized accordingly.
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