Daylighting blindfold material with concave surface

摘要

PROBLEM TO BE SOLVED: To provide a blindfold tool in an indoor laundry drying area such as a grid or a plate on a window surface, a blind or a bamboo blind, but since the material is not transparent, the laundry is blocked by light. The drying was incomplete and it became dry, and there were some harmful effects and inconvenience caused by drying the room. SOLUTION: The conventional blindfold material is made transparent, and the sunlit part is made concave to defocus the room from the line of sight from the outside, thereby maintaining privacy, and further from a wide range from the left, right, or top and bottom. The harmful effects of room drying are removed by collecting the maximum amount of light and converting it into refracted light. [Selection diagram] Fig. 1