Constant temperature box

Claim 1

A portable constant temperature box for keeping inserted objects cold or warm comprising: (a) a body defining an inner space for receiving said objects, said body comprising side walls and a bottom wall each having an adiabatic construction, said body having an upwardly directed opening; (b) a lid of adiabatic construction pivoted to the upper portion of one of said side walls to open and close said upper opening of said body; (c) means for tightly securing said lid to said body; (d) a cooling or heating source holder housed within said body, said cooling or heating source holder being hollow and hermetically sealed for holding liquid which serves as a cooling or heating source, said holder comprising a first cooling or heating source container which abuts against one of said sidewalls of said box body and a second cooling or heating source container which abuts against the bottom of said box body, said first and second cooling or heating source containers being fluid connected together and being foldable at their interconnection, said first cooling or heating source container having a width substantially equal to an interval existing between opposite side walls of said body and a height substantially equal to the height of a side wall of said body, said cooling or heating source holder having a small thickness as compared with the inner space of said body and a flat-wall-like shape as a whole and, at one end face, an intake for said liquid and a stopper for closing said intake; and, (e) support means for supporting said first cooling or heating source container upright and between opposite side walls within said body.