| 摘要 |
PURPOSE:To realize a self-compressor air speaker whose vibrating part is floated in the air by compressing air in an airtight box through the vibration of the diaphragm of the speaker fitted in the airtight box. CONSTITUTION:A woofer and tweeter are fixed to box 16 so that box 16 will be sealed, and unidirectional valve 17 is fitted to box 16. Then, diaphragm 13 vibrates by a current flowing through voice coil 6 and air in box 16 is compressed in consequence and pushes horizontal and vertical inner walls of cylindrical bobbin 14 by way of horn 24 and hole 12 of a magnetic circuit. As a result, bobbin 14 floats in the air away from support cylinder 23 and center pole 10. At the same time, the compressed air lets the tweeter float similarly. In this way, a self-compress air speaker requiring no compressor can be obtained. |
