Patent ID: 6127663
Filing Date: 2000-10-03
Classification: F26B,H05K

Abstract:
A cabinet for housing operative telecommunications equipment in outdoor locations comprising:a) an enclosure for containing said operative telecommunications equipment, said enclosure adapted to be located outdoors;b) an electronics subrack contained within said enclosure and adapted to hold one or more circuit modules during operation of said telecommunications equipment;c) a duct for directing ambient air from outside said cabinet to said subrack, said duct including an inlet disposed adjacent a lower end of said cabinet and a subrack inlet plenum disposed adjacent to an underside of said electronics subrack, wherein said duct includes a heating chamber between said inlet and said subrack inlet plenum;d) a subrack exit plenum including an outlet disposed adjacent an upper side of said electronics subrack; ande) at least one fan for drawing ambient air into said inlet, through said duct into said subrack inlet plenum, through said electronics subrack into said subrack exit plenum, and through said outlet out of said enclosure.