PROBLEM TO BE SOLVED: To provide an activated carbon sheet excellent in removability of hazardous gas component with ozonolysis function, and in flame retardancy.SOLUTION: In a flame-retardant deodorizing filter containing an activated carbon bed and fabric provided to both surfaces thereof, the filter has the fiber ratio of the fabric that is one kind or more selected from at least cellulose fiber, polyvinyl alcohol fiber, polyacrylonitrile fiber and phenol fiber is 30% or more. The filter contains 10 to 70 wt.% of phosphorus-based flame retardant relative to the fabric weight. The filter has an adhesion layer between the activated carbon bed and the fabric. Activated carbon particles are adhered by thermoplastic resin binder particles. The weight per unit area of activated carbon is 50 to 400 g/m2.COPYRIGHT: (C)2012,JPO&INPIT【課題】オゾン分解機能有害ガス成分除去性と難燃性に優れる活性炭シートを提供する。【解決手段】活性炭層と、その両面に設けられた布帛とを含む難燃性脱臭フィルタにおいて、前記布帛が少なくともセルロース繊維、ポリビニルアルコール繊維、ポリアクリルニトリル繊維、フェノール繊維から選択される一種以上の繊維比率が30%以上であり、布帛重量に対してリン系難燃剤を10~70重量%含有し、前記活性炭層と布帛の間に接着層を持ち、活性炭粒子は熱可塑性樹脂バインダー粒子によって固着されており、活性炭目付が50~400g/m2である難燃性脱臭フィルタ。【選択図】図1