Foster Electric Company, Limited

Chiaki Koike

Jun Iwase

A driver holder is disposed inside a housing. This driver holder has a tubular portion formed in a tubular shape, and a driver is accommodated inside the tubular portion. Further, the tubular portion is press-fitted into a module case arranged inside the housing. Here, an opening at one end side in an axial direction of the tubular portion configures a first sound path that communicates the driver with the exterior of the housing. Further, a groove formed at a surface of the tubular portion configures a second sound path which is communicated with the first sound path and extends to a microphone arranged outside the tubular portion.

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Tokyo, Japan

Chiaki Koike