To provide an indoor air adjustment device capable of properly controlling composition of indoor air in a storage box.SOLUTION: An indoor air adjustment device (30) comprises a first composition adjustment unit (40) and a second composition adjustment unit (60). The first composition adjustment unit (40) is configured to separate, from outdoor air, supply air whose composition is different from that of the outdoor air, and then supply the supply air into a transportation container (1). The second composition adjustment unit (60) is configured to separate, from indoor air, discharge air whose composition is different from that of the indoor air, and then discharge the discharge air to the outside of the transportation container (1).SELECTED DRAWING: Figure 3【課題】収納庫の庫内空気の組成を適切に制御できる庫内空気調節装置を提供する。【解決手段】庫内空気調節装置（30）は、第１組成調節部（40）と第２組成調節部（60）とを備える。第１組成調節部（40）は、庫外空気から庫外空気とは組成が異なる供給用空気を分離し、この供給用空気を輸送用コンテナ（1）の内部へ供給する。第２組成調節部（60）は、庫内空気から庫内空気とは組成が異なる排出用空気を分離し、この排出用空気を輸送用コンテナ（1）の外部へ排出する。【選択図】図３
