Building heat preservation air inlet structure

The utility model relates to the technical field of buildings, in particular to a building heat preservation air inlet structure which comprises a first square pipe, a second square pipe and a filter, the first square pipe is arranged outside the second square pipe in a sleeved mode, an abutting plate is arranged in the first square pipe, a ventilation opening is formed in the abutting plate, and the filter is arranged in the first square pipe. An air inlet of the second square pipe abuts against the abutting plate and communicates with the ventilation opening, heat preservation cotton is arranged between the outer wall of the second square pipe and the inner wall of the first square pipe, and the filter is fixedly installed in the first square pipe and covers the ventilation opening. By means of the heat dissipation device, heat loss of hot air in the conveying process can be effectively avoided, and the heat dissipation device is convenient to install. 本实用新型涉及建筑技术领域，具体公开了一种建筑保温进风口结构，包括第一方管、第二方管以及过滤器，所述第一方管套