PROBLEM TO BE SOLVED: To provide a duct with a built-in filter with an automatic take-up function, which has a bactericidal effect.SOLUTION: In a duct with a built-in filter 5, the filter has the function of automatically detecting a burden on the filter within the duct by a pressure sensor 1 and replacing the filter with a new filter 5 by automatic winding. Additionally, the filter has the function of automatically spraying acidic electrolytic water by detecting a decrease in humidity within the duct. The function of sucking in air by a fun 6 to more strongly suck in the indoor air is also adopted. The filter 5 employs such a form as to be arranged in a W-shape.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】殺菌効果のある自動巻取り式の機能を持ったフィルターを内蔵したダクトの提供。【解決手段】ダクト内のフィルターの負荷を圧力センサー1により自動で感知し、自動で巻取りして新しいフィルター5に交換する機能を設け、さらにフィルターにダクト内の湿度低下を検知し、自動で酸性電解水を噴霧する機能、室内の空気をより強く吸引するために、ファン6により吸引する機能及びダクト内のフィルター5はW型に配置する形態を用いたフィルター5内臓ダクト。【選択図】図1
