| 摘要 |
A rotating brush (51) includes a shaft (51a) rotatable about an axis, and a brush portion (51b) provided on part of an outer peripheral surface of the shaft (51a), and is configured to remove dust captured on an air filter (30) by the brush portion (51b). A brush portion (52b) of a cleaning brush (52) is configured to remove dust adhering to the brush portion (51b) during rotation of the rotating brush (51). The shaft (51a) of the rotating brush (51) is configured to cover at least one of both edge portions of the brush portion (51b) which are located in a rotational direction. |
