Heat dissipation device

Abstract

An exemplary heat dissipation device includes a plurality of parallel fins, a heat pipe extending through the fins, and a guiding structure formed on each of the fins. An airflow channel is formed between every two neighboring fins for an airflow flowing therethough. The guiding structure is formed for guiding the airflow to flow to the heat pipe. A space is defined within the guiding structure and has a width decreasing gradually along a flowing direction of the airflow. An opening is defined in the guiding structure for communicating airflow at two opposite sides of each fin. A height of the guiding structure decreases gradually from the opening towards other sides of the guiding structure.

1 . A heat dissipation device comprising:
 a plurality of parallel fins with an airflow channel formed between every two neighboring fins for an airflow flowing therethough;   a heat pipe extending through the fins; and   a guiding structure being formed on each of the fins for guiding the airflow flowing to the heat pipe, a space being defined within the guiding structure and having a width decreasing gradually along a flowing direction of the airflow, at least one opening being defined in the guiding structure for communicating airflow at two opposite sides of each fin, a height of the guiding structure decreasing gradually from the at least one opening towards other sides of the guiding structure.   
   
   
       2 . The heat dissipation device of  claim 1 , wherein the guiding structure comprises two guiding members protruding from a reference surface of each fin, the two guiding members arranged symmetrically to the heat pipe. 
   
   
       3 . The heat dissipation device of  claim 2 , wherein each of the guiding members comprises a linear inner side facing the space and an opposite curved outer side, the at least one opening having two in number, the openings being defined in the inner sides of the two guiding members respectively, the height of each guiding member with respect to the reference surface of the each fin decreasing gradually from the inner side towards the outer side. 
   
   
       4 . The heat dissipation device of  claim 3 , wherein the outer sides of the guiding members smoothly connect with the reference surface of each fin. 
   
   
       5 . The heat dissipation device of  claim 3 , wherein the guiding members cooperatively form a converged side adjacent to the heat pipe and a diverged side facing the airflow, the airflow flowing first into the space via the diverged side, then being guided towards the converged side, and finally being concentrated at an area of each fin near to the heat pipe. 
   
   
       6 . The heat dissipation device of  claim 2 , wherein each of the guiding members comprises a curved inner side facing the space, an opposite curved outer side away from the space, a windward side interconnected between ends of the inner side and the outer side facing the airflow, and a leeward side interconnected between ends of the inner side and the outer side away from the airflow, the at least one opening having two in number, the openings being defined in the windward sides of the guiding members respectively. 
   
   
       7 . The heat dissipation device of  claim 6 , wherein the height of each guiding member with respect to the reference surface of each fin decreases gradually from the windward side towards the leeward side. 
   
   
       8 . The heat dissipation device of  claim 7 , wherein the leeward sides of the guiding members smoothly connect with the reference surface of each fin. 
   
   
       9 . The heat dissipation device of  claim 6 , wherein the guiding members cooperatively form a diverged side facing the airflow and a converged side in rear of the heat pipe, and the airflow flows into the space via the diverged side and then is concentrated at the converged side after flowing through the heat pipe. 
   
   
       10 . The heat dissipation device of  claim 1 , wherein the guiding structure comprises a middle portion and two sloping side portions extending from the middle portion, and the middle portion is curved and forms a converged side in rear of the heat pipe, the two sloping side portions each comprising a linear windward side facing the airflow, the at least one opening having two in number, the openings being defined in the windward sides of the sloping side portions, respectively, a diverged side being formed between the linear windward sides of the sloping side portions. 
   
   
       11 . The heat dissipation device of  claim 10 , wherein the guiding structure protrudes from a reference surface of each fin, the height of the guiding structure decreasing gradually from the windward sides of the sloping side portions towards the middle portion. 
   
   
       12 . A heat dissipation device comprising:
 a plurality of fins arranged side by side, each fin defining a hole, a flange extending from a reference surface of the each fin around the hole, an airflow channel being formed between every two neighboring fins for an airflow flowing therethough;   a heat pipe extending through the hole and thermally connecting with the flange; and   two guiding members protruding from the reference surface for guiding the airflow flowing to the heat pipe, a space being defined between the two guiding members and having a width decreasing gradually along a flowing direction of the airflow, each of the guiding members comprising a linear windward side facing the airflow, two openings being defined in the windward sides of the two guiding members respectively, the openings being configured for communicating the airflow at two opposite sides of each fin.   
   
   
       13 . The heat dissipation device of  claim 12 , wherein the two guiding members are arranged symmetrically to the heat pipe, each of the guiding members comprising a linear inner side functioning as the windward side and an opposite curved outer side, the openings being defined in the inner sides of the two guiding members respectively, a height of each guiding member decreasing gradually from the inner side towards the outer side. 
   
   
       14 . The heat dissipation device of  claim 12 , wherein the two guiding members are arranged symmetrically to the heat pipe, each of the guiding members comprising a curved inner side facing the space, an opposite curved outer side away from the space, the windward side interconnected between ends of the inner side and the outer side facing the airflow, and a leeward side interconnected between ends of the inner side and the outer side away from the airflow, a height of each guiding member decreasing gradually from the windward side towards the leeward side.