| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound concentration tool 1 that can be used comfortably. SOLUTION: This sound concentration tool is made of a resilient and flexible rubber or synthetic resin. A sound concentration section 7 continues to a mounting section 4 and reflects sound waves 5 from the front by the front surface of a sound concentration section body 14, and guides the sound waves 5 to the external acoustic foramen 6. The mounting section 4 has a notched recess 12 with which the base of the rear of the auricle 3 engages and resiliently fits into the auris externa. Ridges 15 vertically extending are formed with clearances p1, p2 and p3 in the rear surface of the sound concentration section 7, and the outside peripheries are forwardly extended to reinforce the sound concentration section body 14. The sound concentration section body 14 can be stably folded and carried.
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