Thermal dissipating device

Abstract

A thermal dissipating device includes a base, at least a heat pipe, a plurality of fins and a fan. The heat pipe is fixed on the base and has an end extending outwards. The fins are fitted to the heat pipe. The fan has an airflow entering side and an airflow exiting side along an airflow path. The fan is provided beside the fins and has the airflow entering side or the airflow exiting side facing gaps between the fins. The fins have hollow portions on edges proximal to the fan, and a buffer space is formed between the fins and the fan. Therefore, the buffer space increases a distance between the fins and the fan to reduce the resistance on the airflow entering the fins that may reduce the noise of the airflow of the fan.

1 . A thermal dissipating device, comprising:
 a base;   at least a heat pipe fixed on the base and having an end extending outwards;   a plurality of fins fitted to the heat pipe; and   a fan, which has an airflow entering side and an airflow exiting side along an airflow path, provided beside the fins and having one of the airflow entering side and the airflow exiting side facing gaps between the fins;   wherein the fins have hollow portions on edges proximal to the fan, and a buffer space is formed between the fins and the fan.   
   
   
       2 . The thermal dissipating device as defined in  claim 1 , wherein the fan has the airflow entering side facing the gaps between the fins. 
   
   
       3 . The thermal dissipating device as defined in  claim 2 , wherein the fins have curved edges proximal to the fan. 
   
   
       4 . The thermal dissipating device as defined in  claim 3 , wherein centers of the curved edges are distal to the fan and opposite sides thereof are proximal to the fan. 
   
   
       5 . The thermal dissipating device as defined in  claim 4 , wherein there are a plurality of the heat pipes, each of which has a middle section fixed on the base and opposite ends extending outwards and upwards respectively to fit the fins thereon respectively, wherein the fins, which are located at a side of the base, are defined as a first set of the fins, and the other fins, which are located at the other side of the base, are defined as a second set of the fins, and the fan is located between the first set of the fins and the second set of the fins. 
   
   
       6 . The thermal dissipating device as defined in  claim 5 , wherein the first set of the fins and the second set of fins have curved edges proximal to the fan respectively.