Patent attributes
A polygonal rotary projection lamp has a base, a polygonal frame, a film set, a polygonal fixing frame, and an illumination set. The base has a disc configured to be driven to spin. The polygonal frame is mounted to the disc and has multiple bottom frame units. The film set is mounted to the polygonal frame and has multiple film units mounted to the polygonal frame and covering the multiple bottom frame units respectively. Each film unit is flat and has a pattern. The polygonal fixing frame is detachably mounted to the polygonal frame and has multiple top frame units respectively connected to the multiple bottom frame units to respectively fix the multiple film units. The illumination set is mounted within the base and emits light toward the polygonal frame. The light passes through each film unit with the pattern to project the pattern.
