| 摘要 |
PROBLEM TO BE SOLVED: To provide a voice coil for generating high sound pressure, a diaphragm having the built-in voice coil and a flat speaker using the diaphragm. SOLUTION: This solid multiangular voice coil 11 is formed by being piled in the approximately perpendicular direction to the diaphragm 12 and arranged between sides of the adjacent permanent magnet 13. Thus, driving force is generated most efficiently to the diaphragm 12 which fixes the solid multiangular voice coil 11 by arranging the solid multiangular voice coil 11 at a position where magnetic force generated by the permanent magnet 13 is the strongest and as a result, the sound pressure is raised. COPYRIGHT: (C)2008,JPO&INPIT
|
