Air duct and heat dissipation device having the same

摘要

An air duct mounted to a fan having an end board includes a top board which defines an opening, through which the fan is extended. Two opposite blocking members extend up from the top board at opposite first sides of the opening. Two opposite limiting members extend up from the top board at opposite second sides of the opening. Each blocking member includes a tab to block a top of the end board of the fan. Each limiting member includes a projection to abut a bottom of the end board of the fan.