A plant growth medium (2) and a support (14) that divides the plant growth medium (2) into a plurality of growth medium compartments (2A, 2B) and that is configured to support the load of the plant growth medium (2) are arranged in a greening frame (10). The growth medium compartments (2A, 2B) have respective plant growth surfaces (2a) and respective rear surfaces that are opposite to the respective plant growth surfaces (2a). Ventilation layer formation boxes (4) are attached to the greening frame (10) so as to be arranged outside of the greening frame (10). Each of the ventilation layer formation boxes (4) forms a ventilation layer (5) having a ventilation opening (5a) that opens to a corresponding one of the aforementioned rear surfaces. The size of the ventilation opening (5a) of the ventilation layer (5) is chosen to be smaller than the corresponding one of the rear surfaces of the growth medium compartments (2A, 2B). The rear surface of each of the growth medium compartments (2A, 2B) - except for area(s) facing the ventilation opening (5a) - is covered by a part of a corresponding one of the ventilation layer formation boxes (4) or separate covering member(s) (16).本發明在綠化框(10)內設有:植物育成基盤(2);以及支持體(14),支撐該植物育成基盤(2)之載重並且將該植物育成基盤(2)分隔成多數之分隔育成基盤(2A)、(2B)。藉由配置在綠化框(10)之外並安裝於綠化框(10)的透氣層形成盒(4)來形成具有透氣口(5a)的透氣層(5),該透氣口係朝向分隔育成基盤(2A)、(2B)之與植物育成面(2a)相反側的面,即朝向背面開口。透氣層(5)之透氣口(5a)的大小係比分隔育成基盤(2A)、(2B)之背面更小。並藉由透氣層形成盒(4)的一部分或獨立設置的遮蔽構件(16),對於分隔育成基盤(2A)、(2B)面對背面之透氣口(5a)部分以外的部分加以遮蔽。1‧‧‧壁面綠化大氣淨化裝置2‧‧‧植物生育基盤2A、2B‧‧‧分隔育成基盤2a‧‧‧植物育成面3‧‧‧綠化盒4‧‧‧透氣層形成盒4a‧‧‧透氣層形成部4b‧‧‧安裝部5‧‧‧透氣層5a‧‧‧透氣口6‧‧‧送風機7‧‧‧植物10‧‧‧綠化框12‧‧‧開口部13‧‧‧遮蔽構件14‧‧‧支持體15‧‧‧支持框16‧‧‧安裝部位板(遮蔽構件)18‧‧‧網狀構件20‧‧‧送風機21、22‧‧‧導管(通風管道)
