| 摘要 |
PURPOSE: A speaker unit and/or a mike unit for a PC are provided to make only one user listen to a sound clearly by reducing a resonant of a speaker and concentrating a sound wavelength to one direction. CONSTITUTION: In a personal computer, the front cover(83) and a rear cover(81) are formed by a plastic material. The covers(83,81) have an internal space, respectively, for wrapping a rim and a speaker thereof. Diameters of the rims of the covers(83,81) are more than that of a rounded outer circumferential surface of a speaker frame. The front surface(80) of the front cover(83) is formed as a plane shape, and a connecting opening(85) is formed at the center portion thereof. A sound collecting opening(87) is formed as a long and narrow ring shape. A connecting end unit(88) is formed at the one side of the sound collecting opening(87). An external side end unit(90) is formed at the other side of the sound collecting opening(87). The diameter of the external side end unit(90) portion is larger than that of the connecting end unit(88) portion gradually. The connecting end unit(88) has a hole(89) at the inner portion thereof. The connecting end unit(88) is integrally connected to the connecting opening(85) of the front surface(80) of the front cover(83). The rim(82) of the rear cover(81) is inserted into the rim(84) of the front cover(83), thus a speaker is inserted and sealed in the front cover(83) and the rear cover(81).
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