Solar greenhouse with whole lighting roof in circular-arch shape

The utility model belongs to a solar greenhouse with a whole lighting roof in a circular-arch shape. The solar greenhouse is composed of a front lighting roof body, a rear lighting roof body, gables on the two sides and a rear eave wall. The front lighting roof body and the rear lighting roof body are respectively composed of a framework and lighting surface materials laid on the framework. Each framework is formed by arch bars arranged in parallel. The front lighting roof body and the rear lighting roof body are both circular-arch-shaped roof bodies. The solar greenhouse is characterized in that the elevation angle alpha of the front lighting roof body ranges from 35 degrees to 50 degrees; the elevation angle beta of the rear lighting roof body ranges from 16.5 degrees to 31.5 degrees; the number obtained by dividing the bending radius of the front roof body arch bars of the front lighting roof body by the chord length of the front roof body arch bars ranges from 0.8 to 1.2; (4) the number obtained by dividing the bending radius of the rear roof body arch bars of the rear lighting roof body by the chord length of the rear roof body arch bars ranges from 0.85 to 1.25. According to the solar greenhouse, the solar ray incidence rate of the front lighting roof body in winter is high, the temperature inside the solar greenhouse in winter easily rises, and the night heat preservation performance is good; solar energy collected in the daytime in summer is less, and cooling in the solar greenhouse is facilitated.