| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of sufficiently ensuring the air capacity of a rear air chamber, even if an electronic apparatus having a piezoelectric type electroacoustic transducer is small. <P>SOLUTION: An electronic apparatus 100 has a circuit substrate 220 fixed in a housing 110, and an electroacoustic transducer 210. The electroacoustic transducer 210 has a sheet-shaped vibrating member 212, a piezoelectric vibrator 211 attached to the vibrating member 212, and a supporting member 213 supporting the vibration member 212. A main rear air chamber 240 is formed between the vibrating member 212 and the circuit substrate 220. The circuit substrate 220, and a housing inner surface 110b on the opposite side to the main rear air chamber 240 with reference to the circuit substrate 220 are separated. On the circuit substrate 220, a ventilation hole 221 facing the main rear air chamber 240 is formed. The main rear chamber 240 and a sub rear air chamber 250 which is a space between the circuit substrate 220 and the housing inner surface 110b are communicated through the ventilation hole 221. <P>COPYRIGHT: (C)2012,JPO&INPIT |
