The present invention relates to a refrigerator including a heat-insulating main body which is made of a heat-insulating material and has a storage compartment formed inside, a door which is provided at an opening of the heat-insulating main body in a manner which allows opening and closing, a cooling unit which cools air in the heat-insulating main body to generate cool air, and a cool-air circulation path along which the cool air circulates between the storage compartment and the cooling unit, said refrigerator comprising, in the cool-air circulation path: a support which supports a photocatalyst and an irradiation unit configured to irradiate said support with excitation light which excites the photocatalyst, wherein, in the cool-air circulation path, a fan circulates the cool air between the storage compartment and the cooling unit, and said irradiation unit is configured to irradiate said support with the excitation light during a period when the cool air is flowing around said support.本發明之冰箱包含有:以隔熱材構成且內部可形成貯藏室的隔熱箱體、自由開閉地安裝於隔熱箱體之開口部的門、將隔熱箱體內之空氣予以冷卻並產生冷氣的冷卻機構、在貯藏室與冷卻機構之間冷氣循環的冷氣循環路徑,且於冷氣循環路徑中具有可載持光觸媒的載持體、及,將用以激發光觸媒之激發光照射於載持體的照射機構。100‧‧‧冰箱101‧‧‧隔熱箱體102‧‧‧冷藏室103‧‧‧冷凍室104‧‧‧蔬果室105‧‧‧製冰室106‧‧‧切換室107‧‧‧隔熱門108‧‧‧冷凍室抽屜門109‧‧‧蔬果室抽屜門110‧‧‧製冰室抽屜門111‧‧‧切換室抽屜門
