| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability of a vibration plate of a vibration device for reporting. SOLUTION: In the vibrator for reporting which comprises a planar vibration plate 2, a supporter part 14, one end of which holds the plate 2, a weight 5 attached to an end of the plate 2, a driving piezoelectric ceramic 4 fixedly bonded to at least one of the sides of the plate 2, an electric circuit to feed alternating voltage to the ceramic 4, and a case 10, to which the electric circuit and the other end of the supporter part 14 are fixed, an elastic body 13 is provided only at the forward end of the plate 2 in the longitudinal direction thereof, in the part 14. |
