Patent ID: 7797959

Claim:
An open showcase having a heat insulating wall having an opening at a front thereof, an inner wall disposed in the heat insulating wall, a first partition wall provided between said inner wall and said heat insulating wall to form an outer layer duct between said heat insulating wall and said first partition wall and an inner layer duct between said first partition wall and said inner wall, and an outer layer outlet and an inner layer outlet provided in an upper edge of said opening in a back and forth relationship in communication with said outer layer duct and the inner layer duct, respectively, to form a dual air curtain by an outer protection air flow and an inner cooling air flow, said open showcase comprising: a partitioning member arranged between said outer layer outlet and said inner layer outlet, and mounted to said first partition wall to extend downward from said first partition wall, said partitioning member being a plate member formed with hard synthetic resin, which is integrally formed with a top wall formed substantially along a bottom of said first partition wall and a second partition wall going down from said top wall; an upstanding wall formed by folding a front edge of said first partition wall upward substantially at a right angle, wherein said top wall of said partitioning member has a substantially L-shaped cross section which substantially corresponds to a shape of said upstanding wall of said first partition wall and a bottom surface of a front part of said first partition wall continuing to said upstanding wall; and an arrangement plate, being a plate member formed of metal, is positioned at a front of said partitioning member, wherein said arrangement plate has a top end folded backward in a substantially L-shaped cross section and a lower part formed as an inclined surface formed with an inclination for a predetermined angle backward, wherein said arrangement plate forms a first engagement part; wherein said partitioning member has a second engagement part, formed at a front top end of said top wall, protruding toward rear and below with a sharp angle, to be engaged with a top edge of said upstanding wall from a front side and a fixing part closely contacting said bottom surface of said front part of said first partition wall continuing to said upstanding wall in a state in which said engagement part is engaged with the top edge of said upstanding wall, and said fixing part is fixed to said first partition wall by a predetermined fixing member in a state in which said fixing part closely contacts said first partition wall, wherein an engagement groove is formed at a lower end of said second partition wall, said engagement groove having a downward opening, wherein said first engagement part is in said engagement groove and is held by said engagement groove.