| 摘要 |
PROBLEM TO BE SOLVED: To provide an ear wax invasion preventing chip for not easily blocking a path for transmitting all sounds even when ear wax sticks. SOLUTION: The ear wax invasion preventing chip 1 to be mounted on the sound output port of an ear hole type hearing aid or an ear plug or the like comprising a sound conducting part 2 which is a roughly cylindrical shape and is open at both ends so that it may be almost entirely inserted to the sound output port, and a flange part 4 having an opening 3 formed at one end of the sound conduction part 2, and a path 9 communicating the outer side of the flange part 4 and the inner side of the sound conduction part 2 is provided on the other of the opening 3. At least two paths 9 are formed, and they comprise a groove 7 formed on the back surface 4a of the flange part 4, and a through-hole 8 provided on the wall surface of the sound conduction part 2 following the groove 7. COPYRIGHT: (C)2009,JPO&INPIT
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