CPC F04D 29/281 (2013.01) [F04D 29/305 (2013.01); H05K 7/20172 (2013.01)] | 13 Claims |
1. A fan, adapted for being disposed in an electronic device, wherein the fan comprises:
a hub; and
a plurality of metal blades respectively extending from the hub, wherein each of the metal blades has a root portion connected to the hub and an end portion away from the hub, and in each of the metal blades, a mass of the end portion is greater than a mass of the root portion, such that the metal blade is elongated while the fan is rotated, wherein the metal blade has a weighting portion and has a windward surface and a leeward surface opposite to each other, and the weighting portion is located on the leeward surface and connected to the end portion.
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