Power supply unit for use in electronic device, has chamfer provided around opening of housing and conducting cold ambient air into housing, and separated cooling fan fastened at inner side of housing

摘要

The unit has an air guide with a housing (10), which possesses an opening (11) at a side, where a chamfer (12) is provided around the opening. The chamfer conducts the cold ambient air into the housing. A separated cooling fan is fastened at an inner side of the housing. A paddle wheel of the fan is fastened to a base plate, which has screwing supports in four corners, where the base plate is fastened to the opening by the supports.