Patent ID: 7942017

Claim:
A refrigerator door, comprising: an outer case that defines an exterior side of the refrigerator door; an inner case provided within the outer, wherein the inner case defines an interior side of the refrigerator door, wherein a space between the inner case and the outer case is charged with a foaming liquid; an ice making unit provided on a side of the inner case to make ice; a fixing unit provided in the space formed between the inner case and the outer case and fixing the ice making unit to the refrigerator door; a dispenser provided on a side of the outer case to discharge ice supplied by the ice making unit, wherein the ice making unit is installed in an ice making room provided on the interior side of the refrigerator door defined by the inner case; an insulation duct provided at one side of the ice making room to guide cold air into and out of the ice making room, wherein the insulation duct is formed of an insulation material, the insulation duct comprising: a cold air supply passage provided at a first side of the insulation duct, wherein the cold air supply passage communicates with a cold air supplying duct when the refrigerator door is closed, the cold air supplying duct supplying cold air from the refrigerator so as to introduce cold air from the refrigerator into the ice making room when the refrigerator door is closed; a cold air discharge passage provided at a second side of the insulation duct, wherein the cold air discharge passage communicates with a cold air discharge duct when the refrigerator door is closed, the cold air discharge duct receiving cold air discharged from the ice making room when the refrigerator door is closed; a support bracket provided at an end of each of the cold air supply passage and the cold air discharge passage to prevent breakage of the insulation duct; and a mounting portion provided at an outer circumference of each of the cold air supply passage and the cold air discharge passage of the insulation duct, wherein the mounting portion is formed as a recess having a shape corresponding to the support bracket to be mounted thereon, wherein a vertically bent fixing portion is provided at two sides of the support bracket so as to be fixed to the mounting portion.