団扇骨枠13は、握り柄12に接合される基板15と、その基板15から放射状に突き出た多数の骨桿16と、隣り合う骨桿16・16の先端間17・17と隣り合う基板15と骨桿の先端17を連結する外周板18とを透明プラスチックによって一体成形して構成する。 The frame 13 includes a substrate 15 jointed to the handle 12, a number of ribs 16 radially projecting from the substrate 15, and an outer peripheral plate 18 for connecting the substrate 15 adjacent to tips 17 and 17 of the adjacent ribs 16 and 16, and the tips 17 of the ribs, wherein the substrate, ribs, and outer peripheral plate are integrally formed of a transparent plastic. - 特許庁