The present invention relates to a solar hot water system, a heat collecting plate (110) for collecting solar energy; The heat collecting the hot water storage tank 120 which is a hot water heat exchanger via a thermal oil which is heated and circulated by the solar heat storage where the heat collection (110); The heat collecting plate 110 and the hot water storage is stored in the tank 120, but respectively provided in the thermal oil is circulated two connection to enable, the heat collecting plate 110, the hot water storage tank 120 through the circulation by the heated thermal oil natural convection in circulation pipe line 130 for processing the hot water heat exchanger; The heat collecting plate 110 to a size that covers the whole being arranged on the upper side of the heat collecting plate 110, a plurality of convex lens 141 through the embossed structure of the egg plate shape by the arrangement intended to improve the energy and the heat collection efficiency of the solar characterized in that it comprises; a convex lens array plate 140.
According to the invention, it is possible to maximize the thermal energy efficiency using a solar light may be used to hot upset stores available and hot water in a short time, while increasing the thermal efficiency can provide a beneficial effect to prevent winter freeze .