| 摘要 |
PROBLEM TO BE SOLVED: To provide a more lightweight speaker device which has a large internal loss, dose not degrade stiffness and environmental endurance, and increases the maximum sound pressure. SOLUTION: The speaker device has a speaker diaphragm 2, and a plurality of dimples 16 which are radially arranged from the center of the speaker diaphragm 2 toward the outside and have a concavely arch shaped structure so that the stress is distributed. Thereby, the weight of the speaker diaphragm 2 is reduced by the plurality of concavely formed dimples 16, the stiffness is maintained by the arch shaped structure of the dimples, and the maximum sound pressure is increased with weight reduction. COPYRIGHT: (C)2011,JPO&INPIT
|
