| 摘要 |
A projector includes a light source, a fan and a guiding passage. The fan is disposed beside a first side of the light source. The guiding passage has a guiding inlet and a guiding outlet. The guiding passage extends from a section near the fan to a section near a second side of the light source. The fan is capable of generating a first airflow and a second airflow. The first airflow is capable of being mixed with the second airflow near the second side of the light source. The second airflow is guided by the guiding passage so that the second airflow is mixed with the first airflow near the second side of the light source.
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