Automatic cooling mechanism for electrical device

Abstract

The present invention provides an automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft. The mechanism includes a fan mounted within the electrical device and a transmission mechanism connected between the fan and the rolling shaft for transmitting rotational kinetic energy from the rolling shaft to the fan to rotate the fan for reducing the temperature of the high-temperature element.

What is claimed is:  
     
         1 . An automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft, comprising: 
 a fan mounted within said electrical device; and    a transmission mechanism connected between said fan and said rolling shaft for transmitting rotational kinetic energy from said rolling shaft to said fan to rotate said fan for reducing the temperature of said high-temperature element.    
     
     
         2 . An automatic cooling mechanism according to  claim 1  wherein said transmission mechanism includes an elastic element.  
     
     
         3 . An automatic cooling mechanism according to  claim 2  wherein said elastic element is a belt.  
     
     
         4 . An automatic cooling mechanism according to  claim 2  wherein said elastic element is a rope.  
     
     
         5 . An automatic cooling mechanism according to  claim 1  wherein said electrical device further includes a shell structure for receiving therein said high-temperature element.  
     
     
         6 . An automatic cooling mechanism according to  claim 5  wherein said fan introduces air into said shell structure.  
     
     
         7 . An automatic cooling mechanism according to  claim 5  wherein the air filled within said shell structure is exhausted by said fan.  
     
     
         8 . An automatic cooling mechanism according to  claim 7  wherein said electrical device further includes a hot-wind exist.  
     
     
         9 . An automatic cooling mechanism according to  claim 8  wherein said hot-wind exist includes a plurality of holes formed on said shell structure.  
     
     
         10 . An automatic cooling mechanism according to  claim 1  wherein said electrical device is an automatic document feeder (ADF).  
     
     
         11 . An automatic cooling mechanism according to  claim 10  wherein said ADF includes a plurality of rollers mounted on said rolling shaft for feeding thereby a document.