A molding device for molding an inner portion of a paper pipe has a molding head, an annular seat disposed on the molding head, an oil supply tube inserted through the annular seat and inserted in the molding head, a rotating device connected to the oil supply tube, and an oil pipe connected to the rotating device. Programmability and sequential actuation are enabled by patterning the phase change material into the integrated device. A horizontal cut-off line forming area 20a1 of a reflector 20 is formed with a plurality of reflection elements 20s1a and 20s1b and the like. A beach umbrella is inserted into and secured to the post.