| 摘要 |
PURPOSE:To improve the sound shield effect by filling acoustic oil in which hollow glass balls are scattered at the back side of a vibrator group. CONSTITUTION:Plural vibrators I 1, I 2- I 6 are connected by vibrator supports II1, II2-II6 to form the vibrator group, which is fixed to a case 4 by vibrator support members 31, 33. The acoustic oil 8 and the hollow glass balls 81 are scattered in the back side IV of the vibrator group. Thus, the sound wave from the part other than the acoustic radiation plane of the vibrator group is shielded by the hollow glass balls 81. Further, the vibrators are arranged in a high density and the transceiver with broad band is realized. |
