| 摘要 |
PROBLEM TO BE SOLVED: To provide a propeller fan having a light and highly safe thick blade. SOLUTION: This propeller fan is formed integrally with an insert part item 8 by insert molding. This insert part item 8 forms a hollow part 5 by joining an insert part item main lid body 10 to the opening end surface (joined part 11) of an insert part item main body 9 U-shaped in section. In this case, the propeller fan is integrally made of a resin or the like so as to prevent the exposure of a joined part such as high frequency welding on the surface thereof.
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