System for checking an internal temperature of a refrigerator by using a thermochromic member

摘要

A system for checking an internal temperature of a refrigerator includes a thermochromic member on an external surface of the refrigerator. A heat transfer from an inside of the refrigerator to the thermochromic member is made through a duct formed through a wall of the refrigerator. Accordingly, depending upon a level of temperature inside the refrigerator, a color of the thermochromic member is changed or not, informing an user of a state of the refrigerator in operation.