| 摘要 |
<p>PURPOSE: A light shelf apparatus and an illuminance system using the same are provided to make the indoor illuminance uniformly by uniformly distributing the light flowing into indoor. CONSTITUTION: A movable part(310) transfers the light shelf. A controller(320) decides the outside projection length of the light shelf and outputs a control signal to the movable part. A memory(330) stores data deciding the outside projection length of the light shelf. The memory stores solar term, time, azimuth of building, and the outside projection length of the light shelf according to sun shadow angle of the sun by the location of building in the form of the look up table. The controller controls the movable part by reading the data of the outside projection length of the light shelf according to solar term, time, azimuth of building and sun shadow angle of the sun by the location of building from the memory. The controller distributes the light flowing into indoor by transmitting the light shelf to outside of window in real time.</p> |
