Rain to light / blister light

This is a type of blister lights,which will be more bright in the rainy day.With the design ment of making the top of the blister bright concave,Letting the light to refract and scatter occurs on the light surface.By this mean to gathering the rays of light around,and providing more light. Futher more,it's also has changed the original fuzzy light in rainy days without consuming much energy.