Two-piece combined louver blade and lifting type anti-theft louver thereof

Abstract

The invention relates to a two-piece combined louver blade formed by combining an inner-side blade with an outer-side blade, which is characterized in that the cross section of the outer-side blade in the width direction is in a straight-line shape or a recurved arc shaped, the integral upper surface of the outer-side blade is provided with saw-shaped teeth for reflecting direct sunlight, the lower surface of the outer-side blade is a smooth surface, the inner-side blade is a flanged flat plate or an arc-shaped plate, the outer-side blade can swing up and down around a rotary shaft in the junction of the outer-side blade and the flange of the inner-side blade, and the width of the outer-side blade is sufficient for the outer-side blade to swing down so that the louver blade is closed. After adopting the structure, the two-piece combined louver blade can keep the high repeated reflection of the direct sunlight and the high light transmittance of a louver under the condition of each solar attitude in summer to achieve the purpose of utilizing light diffuse reflection for indoor illumination, and reflect a part of direct sunlight outdoors and use a part of direct sunlight for indoor illumination and heating under the condition of each solar attitude in winter, and simultaneously keeps the high light transmittance of the louver.

Description

[0001] Field [0002] The invention relates to a louver and an anti-theft shutter made thereof, more specifically to a two-piece combined louver and a lifting anti-theft shutter made thereof. Background technique [0003] European patent (EP0400662B1) discloses a combined louver, which is composed of two parts: an outer blade and an inner blade. The outer blade takes the boundary line with the inner blade as the rotating shaft, and the rotation of the inner and outer blades is controlled by the ropes connecting the louvers respectively. The outer blades can be rotated to a certain angle to block direct sunlight outdoors, while the inner blades can be rotated to a certain angle to introduce direct sunlight into the room for lighting purposes. The German patent (DE29814826U1) improved on the basis of the European patent (EP0400662B1) louver, and added a louver bracket, which is composed of two film hinges and an artificial fiber hinge, and the shapes of the two hinges are respe...

AI Technical Summary

Problems solved by technology

The problem with the W-shaped louver is that the 74% perspective rate is not an ideal data. At low sun altitude angles (the sun altitude angle refers to the angle between the incident direction of sunlight and the horizontal plane) the perspective rate of the louvers will change. The blinds with toothed downward curved louvers also have the same problem. However, in fact, at low sun altitude angles, the blinds need to maintain a high perspective and introduce more sunlight for indoor lighting.

Images