| 摘要 |
PURPOSE:To improve the input capability by using an aromatic polyimide resin to which boron nitride powder having an excellent heat conductivity is mixed at least for a support member to improve the heat conductive characteristic. CONSTITUTION:An aromatic polyimide resin film mixed with the boron nitride powder having excellent heat conductivity is used at least for the support member of the diaphragm. Since an edge 10 has a good heat conductivity, the radiated heat from a voice coil 7 and the conducted heat form a coil bobboin 6 are conducted in excellent way, the heat is dissipated to a front plate 2 via a support 9, thereby suppressing temperature rise of the voice coil 7. Thus, a larger input signal is impressed to the speaker in comparison with a speaker using a conventional edge thereby improving the input capability of the speaker. |
