Heat sink wind guide structure and thermal module thereof

A thermal module with heat sink wind guide structure, comprising:

• a heat sink having multiple spaced similar radiating fins and a wind incoming side, each two adjacent radiating fins defining therebetween a first heat dissipation flow way in communication with the wind incoming side, the radiating fins including a first radiating fin and a second radiating fin, which are respectively positioned on two opposite outer sides of the heat sink, the first radiating fin having a first extension end protruding laterally from the first radiating fin and connecting with a side of the first radiating fin, the second radiating fin having a second extension end protruding laterally from the second radiating fin and connecting with a side of the second radiating fin, wherein said first and second extension ends are limited to said first and second radiating fins a first wind guide wing and a second wind guide wing being respectively connected to two sides of the first extension end, the first extension end and the first and second wind guide wings together defining a first wind guide passageway, a third wind guide wing and a fourth wind guide wing being respectively connected to two sides of the second extension end, the second extension end and the third and fourth wind guide wings together defining a second wind guide passageway, wherein a shaped portion of said first and said second radiating fins is removed to accommodate said wing guide passageway and a first open end of the first wind guide passageway and a second open end of the second wind guide passageway being perpendicular to said first heat dissipation flow way;
• and
• a fan mated with the wind incoming side of the heat sink;
• whereby said first extension end and said second extension end direct additional heat dissipating flow perpendicular to said first and said second radiating fins.