| 摘要 |
PURPOSE: A receiving unit provided with a side sound absorption structure is provided to improve the directionality of the sound by diverging the sound pressure caused by the vibration of the vibration plate into the side by placing the front space sound absorption structure at the sides, thereby intensifying the density of the sound. CONSTITUTION: A receiving unit provided with a side sound absorption structure(A) provided with a frame(22), a top plate(27), a yoke(25), a printed circuit board(PCB)(28), a magnet(26), a vibration plate(23) and a coil(24) includes an upper case(21) forming a side sound absorption structure(20) for receiving a speaker function block and for outputting the calling sound with a predetermined size, a frame(22) provided with a ventilation opening(23) formed on a cylinder having a predetermined size and the PCB(28) installed on the inner surface of the frame(22) in such a way that a power is applied to the top plate(27) in the form of circle, the magnet(27) in the form of circle, the yoke(25) forming the magnetic circuit and the speaker function block.
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