| 摘要 |
The present invention is a sunlight reducing cover for intake and exhaust louvers on a food crop storage building. The invention also decreases the likelihood of ice formation or dirt fouling of the building louvers. The invention interfits within a frame, which is installed over the louvers, preferably inside the building. The invention is generally comprised of a free-flowing, air permeable, plurality of passageways. Each passageway having a first and a second end, with the passageways being of offset configuration wherein the first end is offset from the second end to an extent that a linear path does not exist between the two ends. The preferred embodiment of the present invention is generally comprised of a plurality of panels of generally wave form. The invention is manufactured by attaching the top surface of one panel to the bottom surface of another panel in such a fashion that the period of the wave form of each panel is 180 DEG out of phase with any panel juxtaposed with it, creating a plurality of passageways. In the preferred embodiment of this invention, the panels are made out of an opaque, non-reflective and ultraviolet light resistant polyvinyl chloride.
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