| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily and inexpensively manufacturable multifunctional filter of an electric fan. SOLUTION: This porous filter 8 by nonwoven fabric or polyolefine is detachably provided on a back face 4a of a protective guard 4 covering a rotary fan 2 by an attaching-detaching member, and an antibacterial component or an aromatic component is attached to the filter 8. A plurality of concentric circles 8c are also provided in a perforation shape on an inner peripheral surface of the filter 8. COPYRIGHT: (C)2008,JPO&INPIT
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