Patent ID: 6779975
Filing Date: 2004-08-24
Classification: H05K

Abstract:
A duct fan unit, comprising:a duct, to allow air to pass through, constructed from an engagement of a pair of duct constructing members; at least a fan, clamped and supported inside the duct by the pair of duct constructing members, wherein a plane of engagement of the pair of duct constructing members of the duct is substantially along an air flow direction created by the fan; at least a guide portion, disposed on an inner wall of one of the duct constructing members to limit an installation position of the fan, wherein the guide portion is a rib shape extending from the inner wall perpendicular to the plane of engagement of the pair of duct constructing members; and at least a protrusion portion, disposed on an inner wall of the other duct constructing member to make contact with an outer wall of the fan and resiliently press against the fan towards a side of the duct constructing member, wherein the protrusion portion protrudes in a direction perpendicular to the plane of engagement of the pair of duct constructing members.