Ventilation structure for building

Abstract

A ventilation stricture for a building contains: a cover mounted on an exhaust orifice of a roof The cover includes a short extension and a long extension. The long extension has a first tilted section, a second tilted section, a first light transmission plate, a second light transmission plate, a first beveled guide plate extending from a top of the short extension to the cover, a hooked plate extending from a top of the first tilted section of the long extension, an air outlet defined between the beveled guide plate and the hooked plate, at least one atop plate arranged on the air outlet, a side plate located below the beveled guide plate, a second beveled guide plate connected with the side plate and the second tilted section of the long extension, and a drainage hole defined between the second beveled guide plate and the second tilted section.

What is claimed is: 
     
         1 . A ventilation stricture for a building comprising: a cover mounted on an exhaust orifice of a roof, the cover including a short extension and a long extension arranged on two side of the cover respectively;
 wherein the long extension has a first tilted section, a second tilted section below the first tilted section, a first light transmission plate engaged on the first tilted section, a second light transmission plate engaged on the short extension, a first beveled guide plate extending from a top of the short extension to the cover, a hooked plate extending from a top of the first tilted section of the long extension, an air outlet defined between the beveled guide plate and the hooked plate, at least one atop plate arranged on the air outlet, a side plate located below the beveled guide plate, a second beveled guide plate connected with the side plate and the second tilted section of the long extension, and a drainage hole defined between the second beveled guide plate and the second tilted section.   
     
     
         2 . The ventilation stricture for the building as claimed in  claim 1 , wherein the cover is mounted on a flat roof or a slanted roof.