| 摘要 |
PROBLEM TO BE SOLVED: To use an air purifier as a dust removing device while using a function of the purifier as it is. SOLUTION: An air duct 10 in which air flows from an air suction port 3 to an air blowing port 6 by an air blowing means is formed in a casing 2 provided with the air suction port 3 and the air blowing port 6, and an air purifier 11 is disposed in the air duct 10 and also a suction hose connecting port 9 is formed in the casing 2 by communicating with the air duct 10 between the air purifier 11 and the air suction port 3 and a negative pressure increasing means increasing the negative pressure to a cleaning suction hose when the cleaning suction hose is connected to a suction hose connecting port is provided.
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