HEAT-DISSIPATING SYSTEM HAVING DUST DETECTING FUNCTION

摘要

A heat-dissipating system configured to dissipate heat from an electrical device, includes a heat sink having a plate on which dust is likely to accumulate if dust is present, a light-emitting element arranged on the plate of the heat sink, and an alarm. The alarm device is arranged on the plate of the heat sink and configured to receive light from the light-emitting element. If dust accumulates on the plate thick enough to block light so that the alarm device cannot receive light from the light-emitting element, the alarm device will activate.