摘要：

To provide a waterproof electroacoustic transducer having a high waterproof performance and a portable electronic device provided with the same. The waterproof electroacoustic transducer of the portable electronic device includes: an electroacoustic transducer main body provided with an electroacoustic transducing element on a front surface thereof; a frame body forming a recessed section with the electroacoustic transducing element of the electroacoustic transducer main body as a bottom wall thereof; and a waterproof sheet with flexibility that is fixed to the frame body in a peripheral part thereof so as to close a front opening of the recessed section in order to turn the recessed section into a substantially closed air chamber and follows acoustic vibration of the air inside and outside the air chamber, in which the waterproof sheet is provided with irregularities projected or recessed forward or rearward with respect to an average extending surface S thereof in a state in which no external force is applied to the waterproof sheet such that the waterproof sheet can bend along a wall part of the recessed section while substantially maintaining a length along an extending direction of the waterproof sheet under pressurization.

展开