| 摘要 |
PROBLEM TO BE SOLVED: To provide a stringed instrument capable of preventing warpage of bamboo plywood materials and preventing reduction of sound effects. SOLUTION: In the stringed instrument, a constitution member conventionally made of wood is constituted of the bamboo plywood material. In the bamboo plywood material constituting the stringed instrument, a hard member close to a cylindrical bamboo surface is divided in a circumferential direction to form it in a strip shape, and the upper face and the lower face of the strip are stuck to each other, and they are further stuck together in thick plate shape to create the material. COPYRIGHT: (C)2011,JPO&INPIT
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