Structure-enhanced lamp box

The utility model relates to the field of advertising lamp box equipment, in particular to a structure-enhanced lamp box which comprises an outer frame, an inner frame and an outer screen, an outer frame corner connector and an inner frame corner connector are fixedly connected to the included angle of the outer frame and the inner frame respectively, the outer screen is hinged to the outer frame and rotates in the horizontal direction, heat dissipation air channels are arranged in the two sides of the outer frame, and the heat dissipation air channels are communicated with the inner frame. Heat dissipation holes are formed in the outer surfaces of the left side and the right side of the outer frame, floor supporting legs are fixedly arranged on the two sides of the bottom of the outer frame, the inner frames are fixedly arranged on the inner side of the outer frame, the left ends and the right ends of the upper inner frame and the lower inner frame are fixedly connected with the inner side of the outer frame