| 摘要 |
PROBLEM TO BE SOLVED: To provide an excellent door of a constant-temperature storage in which a glass plate is used in a door front plate and deformation of a door front plate (glass plate), caused by heat shrinkage of a foamed heat insulation material and a difference of linear expansion coefficients, is prevented.SOLUTION: A door includes a door front panel 8 made of a glass plate, a door rear panel 14, and a vacuum insulation panel 10 interposed between the door front panel 8 and the door rear panel 14. The vacuum insulation panel 10 is made in contact with the door front panel 8, and the door front panel 8 has a structure with no contact of a foamed heat insulation material. |
