| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the sound insulating structure of a flash panel that can reduce various sound insulation defects at the same time by partially improving a surface material. <P>SOLUTION: The flash panel P is formed including a couple of surface materials 10 and 11 which are arranged forming a spatial thickness. On the inner surface sides of the surface materials 10 and 11, sound insulating sheets 14 and 15 forming an air layer C and a plate material 16 increasing partial rigidity are added and on the inner surface of one surface material 11, a recessed part 17 is formed. Those sound insulating sheets, plate materials, and recessed part are provided nearly corresponding to maximum amplitude positions of various frequencies where sound insulation defects are caused. <P>COPYRIGHT: (C)2004,JPO |
