Container

A container (1) to which a refrigerator (8) is attached is provided with: a first conductor plate (21) laid on the bottom surface (2) inside the container (1); a second conductor plate (22) that constitutes a ceiling surface (6) facing the bottom surface (2); and an insulating plate (23) that constitutes the surface of the container (1), excluding the bottom surface (2) and the ceiling surface (6), from among the surfaces facing the inside. A plurality of insulators arranged between the bottom surface (2) and the first conductor plate (21) and supporting the first conductor plate (21) from below; and a generating device (10) for applying a voltage to the first conductor plate (21) and forming an electromagnetic field in the internal space. 附设有制冷机（8）的集装箱（1）具备：第一导体板（21），其铺设在集装箱（1）的内部的底面（2）；第二导体板（22），其构成与底面（2）对置的天花板面（6）；以及绝缘板（23），其构成集装箱（1）的朝向内部的面中除了底面（2）和天花板面（6）之外的面；多个绝缘子，其配置于底面（2）和第一导体板（21）之间，用于从下方支撑第一导体板（21）；以及发生装置（10），用于对第一导体板（21）施加电压，而在内部空间形成电磁场。