| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroacoustic conversion device capable of easily obtaining desired frequency characteristics, while enhancing assemblability.SOLUTION: A housing 41 has a bottomed cylindrical shape, and an internal space for housing a sound production unit 30. On the bottom 410 of which, a sound path 11 communicating with the internal space is provided. A piezoelectric sounder 32 of the housing 41 functions as a tweeter for reproducing the high sound area, and has a support part 411 for supporting the periphery, and a sidewall part 412 surrounding the sound production unit 30. The support part 411 and sidewall part 412 are formed annularly, and the support part 411 is provided to project inward from the vicinity of the bottom of the sidewall part 412. The support part 411 is formed of a plane, and supports the periphery of the piezoelectric sounder 32 directly or via other member. An electromagnetic sounder 31 functions as a woofer for reproducing the low sound area, and has a mechanism part 311 including a vibrator such as an electromagnetic coil, and a pedestal part 312 supporting the mechanism part 311 vibratably.SELECTED DRAWING: Figure 1 |
