Patent ID: 9175866
Filing Date: 2015-11-03
Classification: B01D,F24F

Abstract:
1. A dustproof device for a heat sink, the heat sink having an air inlet, the dustproof device comprising: a first blade set disposed in a lateral side of the air inlet, the first blade set including a plurality of first blades arranged in parallel and at intervals, each first blade having a first linking portion and a first blocking portion extended from the first linking portion, the first blocking portion being a free end and bent in a direction toward the heat sink and forming a first opening with another first linking portion of an adjacent first blade; and a second blade set disposed between the first blade set and the air inlet, the second blade set including a plurality of second blades arranged in parallel and at intervals, each second blade having a second linking portion and a second blocking portion extended from the second linking portion, the second blocking portion being a free end and bent in a direction away from the heat sink and forming a second opening with another second linking portion of an adjacent second blade, wherein an extension line of the first blocking portion is located on the second blocking portion.