INTERNAL TRANSMISSION MEMBER

To provide an internal transmission member consists of a hollow double structure which is formed into a hollow structure by using a transmission member so as to realize reduction in weight and, further, extremely facilitates dealing upon manufacturing and opening/closing of door, in such a structure as to spatially separate a region having a temperature difference between an external part and an internal part such as a refrigerating showcase and to have the inside visually recognizable, and to provide a cooling storage using the internal transmission member.SOLUTION: An internal transmission member 18 is manufactured by using a hollow double structure 28 made of thermoplastic resin which has total light transmittance of 88% or more and haze value of 1% or less, and a region having a temperature difference is spatially separated so that an internal part of the region can be transmitted and visualized.SELECTED DRAWING: Figure 1 【課題】冷蔵ショーケースのように、外部と内部とで温度差がある領域を空間的に隔てると共に内部を視認し得る構造において、透過部材を用いて、中空構造に成形することで、計量化が図られ、さらに製造時や扉開閉時の取り扱いが極めて容易になる中空二重構造体からなる内部透過部材および前記内部透過部材を使用した冷却貯蔵庫を提供する。【解決手段】全光線透過率が８８％以上で、かつヘイズが１％以下の熱可塑性樹脂を材質とする中空二重構造体２８により内部透過部材１８を製造し、これで温度差を有する領域を空間的に隔てるようにして該領域の内部を透過して視認し得る構成とした。【選択図】図１