| 摘要 |
PROBLEM TO BE SOLVED: To provide a thin-shape loudspeaker device adaptable to large input.SOLUTION: A diaphragm is formed into a plate and on its back, a cylindrical part is integrally formed which is positioned outside a magnetic circuit provided inside a frame. The cylindrical part is connected with a voice coil and at a position outside the cylindrical part and on the back of the plate diaphragm, radial ribs are integrally formed, thereby achieving rigidity. A center cap is mounted on the front of the plate diaphragm, thereby also improving rigidity of the plate diaphragm. A damper is provided outside the cylindrical part so as not to be mechanically interfered with the magnetic circuit. The damper is disposed on approximately the same plane as an approximately central part of a voice coil winding part. Furthermore, in the cylindrical part and the frame, a heat radiating hole and a window are formed to radiate heat of the voice coil, thereby improving heat dissipation. |
