Today’s invention is a set of shades for a tall building, which also help make better use of internal lighting at night or in dull weather.
Two, right-angle shades, with reflective inner surfaces, are shown attached to a multi-storey building.
During the day, sunlight (orange beam) passes in between them to light the rooms, but not overheat them.
When it’s dark, light from one floor can be reflected up or down into an adjacent floor (yellow beams).
This causes a much more even distribution of illumination, so that many fewer lights need be left switched on for eg security purposes.