| 摘要 |
PROBLEM TO BE SOLVED: To provide a casing for a mobile communication apparatus which can easily improve an acoustic characteristic in a lower register without narrowing a space in the mobile communication apparatus when a sound reproduction apparatus loaded on the mobile communication apparatus is driven. SOLUTION: When a diaphragm for resonance is specially installed in the casing for the mobile communication apparatus, an effect for improving the acoustic characteristic in the lower register is obtained irrespective of the sort of the sound reproduction apparatus, and since the diaphragm for resonance and the casing are integrally molded by using a two-color molding method, effects for the improvement of the acoustic characteristic in the lower register and reduction in the number of components can be obtained. COPYRIGHT: (C)2007,JPO&INPIT
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