Patent ID: 6064746
Filing Date: 2000-05-16
Classification: H04R

Abstract:
A piezoelectric speaker, comprising:an outer case including an external surface having a first external opening at a first end of the outer case and a second external opening at a second end of the outer case and a main body disposed between the first end and the second end, the main body including a first aperture and a second aperture;a first sounding member located at the first aperture of said main body, the first sounding member including at least one first piezoelectric body which is arranged to be vibrated in response to receiving electrical signals; anda second sounding member located at the second aperture of said main body, the second sounding member including at least one second piezoelectric body and which is arranged to be vibrated in response to receiving electrical signals; whereinsaid first and second piezoelectric bodies are arranged to be vibrated in a direction in which internal pressure of said main body increases or decreases at said first and second sounding members;the outer case has a third external opening located at the main body and having an area smaller than an area of a vibrating portion of each of said first and second sounding members.