| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker capable of excellently releasing, to the outside, the heat generated by the conversion of a sound signal into mechanical vibration.SOLUTION: A speaker comprises: a diaphragm 3; a magnetic circuit ZK; a voice coil 6 disposed to vibrate integrally with the diaphragm 3 in its gap; a ventilation passage formed including the gap Gp midway; and a flow regulation part (a valve regulation member 14 and a valve member 15) that is formed on the ventilation passage and regulates a flow rate of passing air in one direction to be smaller than that in the other direction.SELECTED DRAWING: Figure 1 |
