Portable solar energy collecting device

Abstract

A portable solar energy collecting device includes a container configured with an accommodating space therein and including a transparent housing. The transparent housing is formed with a vacuum chamber defined between the inner and outer surrounding walls and surrounding the accommodating space. A heat-absorbing unit is disposed in the accommodating space in the container, absorbs solar energy when the housing is irradiated by solar radiation, and converts the solar energy into thermal energy that is accumulated in the accommodating space in the container.

1 . A portable solar energy collecting device comprising:
 a container configured with an accommodating space therein and including a transparent housing, said transparent housing including an inner surrounding wall and an outer surrounding wall, and being formed with a vacuum chamber defined between said inner and outer surrounding walls and surrounding said accommodating space; and   a heat-absorbing unit disposed in said accommodating space in said container, absorbing solar energy when said transparent housing is irradiated by solar radiation and converting the solar energy into thermal energy that is accumulated in said accommodating space in said container.   
     
     
         2 . The portable solar energy collecting device as claimed in  claim 1 , wherein said transparent housing of said container further includes a partition wall disposed in said vacuum chamber so that said vacuum chamber is divided by said partition wall into first and second chamber portions. 
     
     
         3 . The portable solar energy collecting device as claimed in  claim 1 , wherein said transparent housing is made of a transparent heat-isolating material. 
     
     
         4 . The portable solar energy collecting device as claimed in  claim 3 , wherein the transparent heat-isolating material is one of glass and quartz. 
     
     
         5 . The portable solar energy collecting device as claimed in  claim 1 , wherein:
 said transparent housing of said container is formed with an opening; and   said container further includes a cap body covering sealingly said opening in said transparent housing and cooperating with said transparent housing to define said accommodating space.   
     
     
         6 . The portable solar energy collecting device as claimed in  claim 5 , wherein said heat-absorbing unit includes a heat-absorbing member attached on an inner surface of said inner surrounding wall of said transparent housing. 
     
     
         7 . The portable solar energy collecting device as claimed in  claim 6 , wherein said heat-absorbing member is made of high carbon steel.