| 摘要 |
The invention relates to a window shutter or sliding shutter comprising a displacing device for moving the window shutter or sliding shutter from a first position, in which the window is parallelly overlapped, into a second position, in which the window is not overlapped. The window shutter or sliding shutter has transparent surfaces and values of transparency and of total energy transmittance that are a function of the height of the window shutter or sliding shutter. |
