| 摘要 |
FIELD: construction engineering. SUBSTANCE: window block with adjustable passing of light has casing 1, outer glazing 2 and inner glazing 3 fastened in leaf caches 4,5 of casing 1, to which protective screen 7 is attached. It is located in space between glazing layers 2,3. Window block is provided with device for self- raising of protective screen 7 and with necessary components to lift or lower screen from inside of premise. EFFECT: high efficiency. 3 cl, 4 dwg |
