| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problems with a conventional handy fan, such as generation of noise due to a fan, a motor, sucked air, etc. in a body composed of a cylindrical outer cylinder opened at both ends, and deterioration of working environment or circumferential environment resulting from the same, although the handy fan has a structure in which a duct, the motor and the fan are housed respectively in the body composed of the outer cylinder, and can efficiently send outside air (fresh air), to a portion where it is needed, through the duct by sucking the outside air through the fan rotated by the motor driven by external electricity. <P>SOLUTION: The small blower device of a double-cylinder structure includes: a small ventilation device of a double-cylinder structure constituted by an inner and an outer cylinders, and a suction passage formed between the inner and outer cylinders, one end of the outer cylinder being closed. The motor and the duct are provided in the inner cylinder, a connecting cylindrical portion composed of an acoustic absorption material is formed in the middle of the inner cylinder, and an air guide member is provided at a suction port of the suction passage. <P>COPYRIGHT: (C)2013,JPO&INPIT |
