The utility model discloses a
moisture-proof
lawn sound box, which belongs to the technical field of
lawn sound boxes, and comprises an outer shell, a fixing sleeve, a waterproof horn, an inflator pump, a first
piston ring and a second
piston ring, the outer shell is a cylindrical uncovered shell, and the bottom in the outer shell is provided with an inner shell and a lining which are both in a circular tube shape; a
piston linkage structure is formed by the outer shell, the inner shell, the lining and the fixing sleeve, the inflator pump is matched with the first
piston ring and the second
piston ring to conduct inflation and deflation actions in the first piston bin and the second piston bin, when the inflator pump conducts inflation, the fixing sleeve is lifted in a sliding mode, the waterproof horn ascends, when the inflator pump conducts deflation, the fixing sleeve descends in a sliding mode, and the waterproof horn ascends. When the waterproof
loudspeaker descends, water accumulated above the first
piston ring is discharged, so that the water is prevented from entering the
sound box from a gap of the lifting structure, the condition that a wiring part in the
sound box is affected with damp is avoided, and the damp-proof effect of the
lawn sound box is better.