| 摘要 |
An apparatus is provided including an air diffuser, a filter, a cover, a fan, and a shade in which the fan is located. The air diffuser may be surrounded by the filter except for a bottom opening in the air diffuser. The cover may surround the filter and the air diffuser except for a bottom opening in the filter and the bottom opening in the air diffuser. The air diffuser and the cover may be attached to the shade. The shade may have a bottom opening. The fan may cause air to flow into the shade through the bottom opening of the shade, then through the bottom opening of the air diffuser, the filter, and a first opening of the cover, then out a set of a plurality of openings in a side of the air diffuser, then through the filter, and then out a set of a plurality of openings in the cover.
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