With the external auditory meatus the device and the telephone call device null which bone conduction sound the pickup

摘要

PURPOSE:To prevent production of a sense of disorder and of displeasure by providing a mount part of almost a disk shape and a bone conduction microphone section and supporting the bone conduction microphone section to the mount part via an elastic member so that at least a contact part with an externally auditory meatus is in elastic press contact onto a wall of the externally auditory meatus at almost a right angle. CONSTITUTION:A mount part 1 is set to a boat-like ditch C and a bone conduction microphone section 2 is set to a space of an externally auditory meatus A. Thus, the outer circumference of the mount part 1 of almost a disk shape is supported over a wide range of a tragus cartilage B, the entrance of the externally auditory meatus A, and the inner face of the ear shell forming a boat-like ditch C. On the other hand, a tip 2A of the bone conduction microphone section 2 is in contact with the externally auditory meatus in the space of the externally auditory meatus based on an elastic member 13. Thus, the bone conduction microphone section is supported at a position not giving a sense of disorder and a sense of insertion of foreign material while ensuring a sufficient contact area and contact pressure to pick up a bone conduction sound.