| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric sounder device which efficiently generates sounds at a low frequency range even when the downsizing is achieved to enable the installation in a narrow space.SOLUTION: In a piezoelectric sounder device 1, a first bending vibration element 5 and a second bending vibration element 7, which perform bending vibrations, are bonded to each other through a resin layer 6, and a first bending vibration part 4, composed of the first bending vibration element 5, the resin layer 6, and the second bending vibration element 7, is bonded to a flexible sheet 3. Further, the sheet 3 is supported by a supporting member 2 at a portion of the sheet 3 which extends to the outer side of an outer peripheral edge of the first bending vibration part 4. |
