To suppress deterioration of freshness of plants in a case where abnormality occurs in an in-box air conditioner 60, in a refrigeration device for a container including the in-box air conditioner 60.SOLUTION: In an in-box air conditioning control unit 55 for controlling oxygen concentration of in-box air to a target value, provided is a unit 59 for controlling operation in abnormal time which, when abnormality occurs in an in-box air conditioner 60, performs operation continuity control so that operation stop of a refrigerant circuit 20 is later than the time when the abnormality occurs.SELECTED DRAWING: Figure 4【課題】庫内空気調節装置（60）を備えたコンテナ用冷凍装置において、庫内空気調節装置（60）に異常が生じたときに植物の鮮度が低下するのを抑える。【解決手段】庫内空気の酸素濃度を目標値に制御する庫内空気調節制御部（55）に、庫内空気調節装置（60）に異常が発生したときに、冷媒回路（20）の運転停止をその異常発生時よりも遅らせる運転継続制御を行う異常時運転制御部（59）を設ける。【選択図】図４
