| 摘要 |
<p>A miniature sound box with a telescopic resonance cavity. The miniature sound box comprises a loudspeaker, a sound box upper case, a sound box middle case, a sound box lower case, an audio line, an audio plug, a circuit board (2), a loudspeaker mesh, and the telescopic resonance cavity. The miniature sound box is provided with an indicating lamp (1) thereon, and the indicating lamp (1) is connected to the circuit board (2) through a wire. The miniature sound box is provided with the indicating lamp (1) thereon, and the indicating lamp (1) lights up when a switch is turned on and goes out when the switch is turned off; therefore, whether the sound box is opened or closed can be known through the indicating lamp (1), especially when the miniature sound box is not used, thereby preventing the miniature sound box from being opened when the miniature sound box is not used.</p> |
