The blower (101) includes a casing (1) having an air inlet (11) and an air outlet (12), a blower fan (5) arranged inside the casing (1), and an inlet ( 11) a cover member (2) detachably attached to the housing (1) so as to cover the inflow port (11) while being separated from the inflow port (11), and to allow air to pass through while blocking the inflow port (11). When the space provided with the filter (4) and surrounded by the filter (4) and the cover member (2) is referred to as a first space (20), the cover member (2) includes the first space (20). ), And a net member (15) is arranged in the first space (20).送風装置（１０１）は、空気の流入口（１１）および吹出口（１２）を有する筐体（１）と、筐体（１）の内部に配置された送風ファン（５）と、流入口（１１）から離隔しつつ流入口（１１）を覆って筐体（１）に着脱可能に取り付けられたカバー部材（２）と、流入口（１１）を遮りつつ空気は通過可能なように配置されたフィルタ（４）とを備え、フィルタ（４）とカバー部材（２）とに取り囲まれた空間を第１空間（２０）と呼ぶこととすると、カバー部材（２）は、第１空間（２０）への空気の吸込口を有し、第１空間（２０）内には網部材（１５）が配置されている。
