| 摘要 |
An electronic device includes a housing, a lamp having a voltage rating, a ballast electrically connected to the lamp, a main board having a predetermined voltage and electrically connected to the ballast, a first fan electrically connected to the main board, and a second fan electrically connected to the main board. The lamp, the ballast, the main board, the first fan and the second fan are disposed in the housing, and the first fan is nearer the ballast than the second fan. When the voltage rating of the lamp is greater than the predetermined voltage of the main board, the main board actuates the first and second fans to dissipate heat from the lamp and other elements in the housing. When the voltage rating of the lamp is less than the predetermined voltage of the main board, the ballast actuates only the first fan to dissipate heat from the lamp.
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