| 摘要 |
PROBLEM TO BE SOLVED: To provide a cartilage conduction hearing aid capable of contributing to improvement of cartilage conductivity and a wearing feeling, a cartilage conduction speaker cover and a cartilage conduction speaker.SOLUTION: A cartilage conduction hearing aid 1 includes: a cartilage conduction speaker 2 including a vibration surface 21 which is brought into contact with an ear concha cavity wall H in the case of ear concha cartilage conduction, and a housing 22 that is formed to extend from the vicinity of paired helixes F to an external auditory meatus B when the vibration surface 21 is brought into contact with the ear concha cavity wall H; and a cartilage conduction speaker cover 3 including a holding part 33 for holding the cartilage conduction speaker 2, a front face part 33a of the holding part 33 that is positioned at an opposite side of the vibration surface 21 when the cartilage conduction speaker 2 is held by the holding part 33, and a first protrusion 31 which extends in a direction from the front face part 33a of the holding part 33 through a gap between a tragus C and an opposite tragus D to an inter-tragus incisure E when the vibration surface 21 is brought into contact with the ear concha cavity wall H, and is brought into contact with an inner surface of the tragus C, an inner surface of the opposite tragus D and a surface of the inter-tragus incisure E.SELECTED DRAWING: Figure 1 |
