To suppress thermal expansion of compressed air and improve filling efficiency of an air tank by cooling a delivery pipe leading compressed air and the air tank storing compressed air.

An exhaust duct 35 is provided in a package 1 in a state connected to a cooling air flow out port 33 of a cooling air guide 28, and a tip side of the exhaust duct 35 is opened toward the air tank 39 on a lower side via an outer exhaust port 12 of a pedestal 2 and another outer exhaust port 13 of a right panel 5. Consequently, the exhaust duct 35 can drop temperature of compressed air stored in the air tank 39 by blowing cooling air exhausted outside from each outer exhaust port 12, 13 around the air tank 39. Also, since the exhaust duct 35 extends in a state surrounding a delivery pipe 26 of a compressor main body 14, compressed air circulating in the delivery pipe 26 can be cooled by cooling air circulating in an exhaust passage 38 of the exhaust duct 35.