| 摘要 |
<p>An air filter coupled to an air inlet, which draws in air. The air filter is automatically cleaned to prevent clogging. When the supply of power is cut off during a cleaning operation sequence of the air filter and the electronic device restarts operation thereafter, the interrupted cleaning operation sequence is completed. An automatic cleaning operation may be performed on the air filter when a video projector, which serves as an electronic device, starts to operate. In addition, an automatic cleaning operation may be performed on the air filter when clogging of the air filter is detected.</p> |
