Rod-changing type self-charging sound box for projection curtain

The invention discloses a rod-changing type self-charging sound box for a projection curtain, which comprises a sound box capable of being arranged on the curtain, a rechargeable battery for supplying power to the sound box is arranged in the sound box, a contactable electric connection structure is arranged between the sound box and a curtain main body, and the rechargeable battery can be charged by being conducted with an external power supply through the contactable electric connection structure. According to the structure, the original effect and function of the curtain are guaranteed, the sound box and the curtain are combined together, the curtain is attractive, the indoor ground space is not occupied, the problems that the ground and the desktop space are occupied and the curtain is not attractive are solved, manual wire plugging and power connection are not needed every time the curtain is used, and therefore the curtain is more convenient to use. 本发明公开了一种投影幕布用换杆式自充电音响，包括能够设置于幕布上的音响，所述音响内设有给音响供电的可充电池，