Passive type solar air heating utilization device

The utility model provides a passive type solar air heating utilization device which comprises a transparent shell. An opening is formed in the transparent shell. A heat absorbing film is arranged on the opening of the transparent shell. A heating cavity is formed in the transparent shell. The passive type solar air heating utilization device is characterized in that a plurality of reflection plates are arranged in the heating cavity. Due to the fact that the reflection plates are additionally arranged, sunlight reflected by the heat absorbing film can be reflected back to be absorbed again, and sunlight utilization rate is improved. The passive type solar air heating utilization device not only has the heating effect, but also has the warm keeping function, the indoor air exhaust effect can be achieved through an air inlet fan, an air outlet fan, an air inlet baffle, an air outlet baffle, an air outlet and an air outlet baffle, indoor air freshness can be maintained, and the passive type solar air heating ut