Abstract:
An electronic device includes an electronic component and a heat sink mechanism. The electronic component includes at least one heat sink portion defining a plurality of heat sink holes. The heat sink mechanism includes at least one first conducting portion secured to an end of the heat sink holes, for dissipating heat produced by the electronic component away from the electronic device.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to an electronic device having a heat sink mechanism. 
         [0003]    2. Description of Related Art 
         [0004]    Electronic devices, such as disc players and notebook computers, include electronic components, which generate heat while in use. This generated heat increases the temperature of the electronic components. Because some components of an electronic device has a maximum operating temperature, if an electronic component is operated at a temperature exceeding the maximum operating temperature, its lifespan will be shortened and the electronic devices may be damaged. 
         [0005]    Therefore, there is room for improvement in the art. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
           [0007]      FIG. 1  is an isometric view of an embodiment of an electronic device. 
           [0008]      FIG. 2  is a partial, disassembly view of the electronic device of  FIG. 1 . 
           [0009]      FIG. 3  is an enlarged view of portion II of  FIG. 2 . 
           [0010]      FIG. 4  is a partial, assembly view of the electronic device of  FIG. 2 . 
       
    
    
     DETAILED DESCRIPTION 
       [0011]    Referring to  FIGS. 1 and 2 , an embodiment of an electronic device  100  is illustrated. The electronic device  100  includes a base  10 , an electronic component  11 , a cover  20  rotatably connected to the base  10 , and a heat sink mechanism  30 . The base  10  includes a top case  12  having a top plate  120  and a bottom case  13  connected to the top case  12 . The bottom case  13  includes a bottom plate  130  opposite to the top plate  120  and four sidewalls  132  extending from rims of the bottom plate  130 . The top case  12  cooperates with the bottom case  13  to define a receiving space (not labeled), for receiving the electronic component  11 , the heat sink mechanism  30 , and other components. The heat sink mechanism  30  is used for dissipating heat produced by the electronic component  11 . The electronic device  100  may be a notebook computer, a disc player, or other electronic devices. In the embodiment, the electronic device  100  is a disc player. 
         [0012]    The electronic component  11  is substantially plate-shaped, and includes a first surface  110 , a second surface (not shown) opposite to the first surface  110 , a plurality of heat sink portions  116 , and a heat-producing component  117 . The heat-producing component  117  protrudes out of the first surface  110 . The heat-producing component  117  may be an integrated circuit (IC) chip or other heat-producing components. In the embodiment, the heat-producing component  117  is an IC chip. The electronic component  11  defines a substantially U-shaped opening  112 . 
         [0013]    Referring also to  FIG. 3 , the heat sink portions  116  are arranged around the edge of the electronic component  11  and are spaced from each other. Each heat sink portion  116  defines a central hole  114  and a plurality of circular-shaped heat sink holes  118 . The heat sink holes  118  encircle the central hole  114 . The inner surface of each central hole  114  is electrically conductive. The first surface  110  and the second surface are covered by an insulation layer except where the heat sink portions  116  are positioned. The shape and the manner of the heat sink holes  118  encircling the central hole  114  may be changed according to need. 
         [0014]    Referring to  FIG. 2  again, the heat sink mechanism  30  of the embodiment is shown. The heat sink mechanism  30  includes a first plate-shaped heat sink component  31  and a second plate-shaped heat sink component  32  engaging with the first heat sink component  31 . The first heat sink component  31  and the second heat sink component  32  are arranged on opposite surfaces of the electronic component  11 . In the embodiment, the second heat sink component  32  is mounted on the bottom plate  130 , the electronic component  11  is arranged on the second heat sink component  32 , and the first heat sink component  31  is mounted on a surface of the electronic component  11  opposite to the second heat sink component  32 . In the embodiment, the first heat sink component  31  and the second heat sink component  32  are made of aluminum. 
         [0015]    The first heat sink component  31  is secured to the first surface  110  of the electronic component  11 , and includes a first heat transferring portion  312 , a second heat transferring portion  314  extending from the first heat transferring portion  312 , a first connecting portion  316  and a plurality of spaced first conducting portions  318 . 
         [0016]    The first heat transferring portion  312  defines a substantially U-shaped recess  3124  corresponding to the opening  112  of the electronic component  11 . The recess  3124  includes two opposite first sidewalls  3122  and a second sidewall  3123  connecting with the two first sidewalls  3122 . The first heat transferring portion  312  is recessed toward the electronic component  11  to form a concave portion  3121  corresponding to the heat-producing component  117 . 
         [0017]    The second heat transferring portion  314  corresponds to and is received in the recess  3124 . The second heat transferring portion  314  connects with the second sidewall  3123  and one of the first sidewalls  3122 . The second heat transferring portion  314  is parallel to the first heat transferring portion  312 . When viewed from a top surface of the first heat transferring portion  312  opposite to the electronic component  11 , the second heat transferring portion  314  is recessed in the first heat transferring portion  312 . When viewed from a bottom surface of the first heat transferring portion  312  opposite to the top surface, the second heat transferring portion  314  protrudes out of the first heat transferring portion  312 . 
         [0018]    The first connecting portion  316  extends from a side of the second heat transferring portion  314  adjacent to one of the first edges  3122 , and protrudes out of a surface of the second heat transferring portion  314  opposite to the second heat sink component  32 . The first connecting portion  316  in the embodiment is substantially coplanar with the first heat transferring portion  312 . 
         [0019]    The first conducting portions  318  are arranged around the edge of the first heat transferring portion  312  and correspond respectively to the heat sink portions  116 . The first conducting portions  318  are curved from the edges of the first heat transferring portion  312  and toward the electronic component  11 , with the free ends extending in a direction parallel to the first heat transferring portion  312 . The size of the free ends of the first conducting portions  318  is substantially equal to that of the corresponding heat sink portion  116 , for wholly covering the corresponding heat sink portion  116 . Each first conducting portion  318  defines a first through hole  3180 . In the embodiment, the second heat transferring portion  314 , the concave portion  3121 , and the first conducting portions  318  are recessed in the same direction relative to the first heat transferring portion  312 . The vertical height of the second heat transferring portion  314  relative to the first heat transferring portion  312  is substantially equal to the distance between the heat-producing component  117  and a surface of the second heat sink component  32  opposite to the electronic component  11 . Furthermore, the distance between the first conducting portions  318  and the first heat transferring portion  312  is larger than the distance of the concave portion  3121  and the first heat transferring portion  312 . 
         [0020]    The second heat sink component  32  is arranged between the bottom plate  130  and the electronic component  11 . A second connecting portion  321  and a plurality of spaced second conducting portions  323  are formed on the second heat sink component  32 . The second connecting portion  321  corresponds to the first connecting portion  316 , for engaging with the first connecting portion  316  to fix the first heat sink component  31  with the second heat sink component  32 . Each second conducting portion  323  defines a second through hole  324 . The shape of the second conducting portions  323  corresponds to and engages with the first conducting portions  318  respectively. In the embodiment, the area of the second conduction component  32  is larger than the area of the second heat transferring portion  314 . 
         [0021]    Referring to  FIG. 4 , in assembly, the second heat sink component  32  is mounted on the bottom plate  130 , with the second fixing portion  321  and the second conducting portions  323  toward the top plate  120 . The electronic component  11  is mounted on the second heat sink component  32 , with the heat-producing component  117  opposite to the second heat sink component  32 . The second conducting portions  323  are secured to a surface of the heat sink portions  116 , with the second through holes  324  being aligned with the central holes  114  respectively. The first heat sink component  31  is mounted on the first surface  110  of the electronic component  11 , with the concave portion  3121  securing and corresponding to the heat-producing component  117 . The free ends of the first conducting portions  318  are wholly covered on a surface of the heat sink portions  116  opposite to the first heat sink component  31 , with the first through holes  3180  aligned with the central holes  114  respectively. A plurality of fixing members (such as screws, not shown) extend through the first through holes  3180 , the central holes  114  and are further secured to the second through holes  323 , for fixing the first heat sink component  31 , the electronic component  11  and the second heat sink component  32  together. 
         [0022]    In this state, the first heat sink component  31 , the electronic component  11  and the second heat sink component  32  are kept a predetermined gap with each other. The first heat transferring portion  312  contacts with the heat-producing component  117 . The second heat transferring portion  314  extends through the opening  112  and contacts with the second heat sink component  32 . The first and second conducting portion  318 ,  323  are secured on opposite surfaces of the heat sink portions  116 . 
         [0023]    In use, the heat produced by the heat-producing component  117  is transmitted to the first heat sink component  31 . And then, the first heat sink component  31  transmits the heat to the second heat sink component  32  via the second heat transferring portion  314 , for dissipating the heat and further transmitting the heat out of the electronic device  100 . Simultaneously, the electronic component  11  is surrounded by the first and second heat sink components  31 ,  32 . The first conducting portions  318  and the second conducting portions  323  are secured to opposite surfaces of the heat sink portions  116 , thus, the heat from the electronic component  11  is transmitted to the first and second sink components  31 ,  32  via the heat sink holes  118 . Furthermore, the first and second conducting portions  318 ,  323  electrically contact the electronic component  11 , thus, static electricity of the electronic component  11  can be dissipated to ground. 
         [0024]    Although information and the advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the present embodiments, the disclosure is illustrative only; changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the present embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.