To provide an air duct system 100 and a branching unit 50 which do not significantly reduce air flow and can increase the efficiency in removing viruses or bacteria.
The air duct system 100 comprises a main duct 21, a branching duct 22 and a branching unit 50. The main duct 21 is provided to deliver air indoors. A plurality of branching ducts 22 are provided with respect to the main duct 21. The branching unit 50 connects the main duct 21 and the plurality of the branching ducts 22 by piping. The branching unit 50 has a first bacterium reducing part 70. The first bacterium reducing part 70 includes a first adsorbing part. The first adsorbing part adsorbs viruses or bacteria. Further, the first bacterium removing part 70 removes the viruses or bacteria contained in air.
KURODA TARO
OKAMOTO YOSHIO
Hidetada Kato
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