A louver

Abstract

The present application relates to the field of shutter, disclose a kind of ventilation shutter, comprising: window frame;Air guide unit, including flat flow plate, rotationally connected to the air guide plate of the rear side of flat flow plate, the left and right sides of flat flow plate are connected to the left and right sides of window frame, air guide unit is provided with multiple in up-down direction, air gap is formed between adjacent two flat flow plates;Drive mechanism, set in window frame, drive mechanism is drivingly connected multiple air guide plates, drive mechanism can drive multiple air guide plates respectively upward rotate and protrude from multiple flat flow plates, alternatively drive multiple air guide plates respectively downward rotate to the bottom side of multiple flat flow plates, the ventilation efficiency of window frame can be flexibly adjusted by rotating adjustment to air guide plate, both can prevent rainwater from invading indoors, and also can improve the ventilation effect to indoors, greatly improve the overall practicability.

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