| 摘要 |
PURPOSE: A variable lighting device system is provided to raise efficiency of lighting and work, protect the user's eyesight and save energy by lighting specific indoor areas as needed. CONSTITUTION: A variable lighting device system includes followings. Multiple fixed rails(10) are installed in the same direction with same intervals on the ceiling. Multiple moving rails(30) that slide along the fixed rails(10) are installed. Multiple lamp sets that slide along are installed to each moving rail(30). The primary electromotive means(20) is used to install the moving rails(30) to the fixed rails(10). The primary electromotive means(20) includes followings. Rolling grooves(10a) formed on the fixed rails(10). A connecting unit(21) that has rolling grooves(21a) corresponding to the rolling grooves(10a) connects the fixed rails(10) and the moving rails(30). An electromotive device(22) installed between the rolling grooves(10a,21a) rolls. A combining unit(23) combines the connecting unit(21) and the moving rails(30). |
