The device is provided with: a main body (111) having a leading end aperture, a back end aperture (111b), and a main flow channel; and a blower flow channel (112), having a blower air inlet (112a) and an exhaust nozzle. Also provided are a motive fan, a motive fan housing, an internal suction port, suction air inlet (115b), rotation adjustment hole (111f), and a blower fan provided inside the blower flow channel (112). A blower switching part, a lever part (113), and an air inlet cover (113c) that adjusts the aperture area of the suction air inlet (115b) and the rotation adjustment hole (111f) are also provided. The air inlet cover (113c) is linked with the lever part (113).