The skylight of the old house is mainly used for lighting.
Now people live in houses that don't see skylights, but some roofs leave tiger windows. The main function of tiger window is to enter the sloping roof for maintenance, and another function is ventilation, but lighting is secondary.
Tiger windows not only facilitate roof maintenance, but also provide lighting and ventilation.
However, some factories now have skylights. However, the skylight of the factory building is no longer glass, but a transparent sun panel or a transparent corrugated tile made of polyurethane. The lighting surface is relatively large and the lighting effect is very good.
The skylight in this workshop is mainly used for lighting and ventilation.
The main function of the skylight in this workshop is lighting.