PROBLEM TO BE SOLVED: To provide a heat insulation box having high resistance against dirt, having a simple structure, and capable of being easily assembled and disassembled.SOLUTION: A heat insulation box 1 includes a plate-like bottom surface plate 2 comprising a heat insulating material and a plurality of side plates 31-34, and can be assembled in a box shape by standing the side plates 31-34 on outer peripheral edges 2a of the bottom surface plate 2. The bottom surface plate 2 and the side plates 31-34 are sealed by two facing plastic films 4 in such a state that sides 31a-34a of the side plates 31-34 are in the vicinity of the outer peripheral edges 2a of the bottom surface plate 2.COPYRIGHT: (C)2014,JPO&INPIT【課題】汚れに対して強く、簡素な構造であって容易に組み立て及び分解が可能な断熱箱体を提供する。【解決手段】断熱材料からなる板状の底面板2と複数の側面板31~34とを有し、側面板31~34を底面板2の外周縁2aに立てて箱状に組み立て可能な断熱箱体1であって、側面板31~34の一辺31a~34aが底面板2の外周縁2aに近接した状態で、底面板2と側面板31~34は対向する2枚のプラスチックフィルム4で封入されている。【選択図】図1