| 摘要 |
PROBLEM TO BE SOLVED: To provide an earphone attachment that further utilizes features of an open earphone that a speaker size is larger compared with that of a closed earphone and acoustic characteristics are natural, and also, to provide an earphone attachment and an earphone that reproduce high-sound-quality sound without special design while transmitting sound on the front face of a speaker to the eardrum as it is without distortion. SOLUTION: The earphone attachment is provided with a cylinder 11 which has an outer diameter tightly fitted to the inner face of the external ear canal, and also, has a length tightly fitted to the external ear canal in a prescribed length on the depth side of the opening of the external ear canal when its one end is inserted to the external ear canal; and a cone 12 that connects a small-diameter end to the other end of the cylinder 11, connects a large-diameter end to the outer periphery of the open type earphone 20, and brings its outer face into contact with the vicinity of the antilobium so as to have a shape that holds a prescribed space in between the auricle near the antilobium. The cylinder 11 is attached to the ear so as to be tightly fitted to the external ear canal in the prescribed length on the depth side of the opening of the external ear canal, and faithfully transmits the sound of the open type earphone 20 without inhibiting a function as a resonance box of the external ear canal. There is no sound diffused reflection on a passage from the open earphone 20 to the external ear canal as a whole, so as to prevent the occurrence of distortion in the sound. The cone 12 holds the prescribed space in between the auricle near the antilobium. Therefore, the earphone attachment prevents a user from having an oppressing feeling while holding high safety due to incomplete external-sound blocking. COPYRIGHT: (C)2008,JPO&INPIT
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