ROOF LIGHT SYSTEM HAVING AN IMPROVED VENTILATION DEVICE
摘要
<p>The roof light system is composed by a roof unit (10), a light conduit (70) and a diffuser unit (80). A ventilation device has a ventilation tube (60) separate and detached from the light conduit (70). The first end of the ventilation tube is connected with the roof unit (10) and the second end with the diffuser unit (80).</p>
