Abstract:
A heat-dissipating device for an electronic component is proposed, including a main body, at least a heat pipe and at least a heat-dissipating block. The heat-dissipating block detachably coupled to the heat pipe is used to increase the heat transfer area, allowing heat generated from the electronic component to be transferred through the heat pipe to the heat-dissipating block for effective dissipation to outside of the electronic component.

Description:
FIELD OF THE INVENTION 
     The present invention relates to heat-dissipating devices for electronic components, and more particularly, to a heat-dissipating device for use with an electronic component for dissipating heat generated by the electronic component. 
     BACKGROUND OF THE INVENTION 
     Current electronic components, such as CPUs or semiconductor packages used in computers or servers, have a high manipulation speed. Thus, when the electronic component is executed under full load, the temperature of its surface will be rather high even up to above 100° C. In order to dissipate heat generated by the electronic component, various heat dissipation modules, such as fans or coolers, are mounted with the electronic components for dissipating the heat generated from the electronic components, so as to prevent the electronic components from being damaged due to overheat. 
     However, the technology of making electronic components is advanced very rapidly. A more advanced electronic component can be developed within a short period of time. Since the advanced electronic components usually produce a greater amount of heat, the original module for heat dissipation will be insufficient to efficiently dissipate the heat generated from the electronic components. Thus, it is usually required to design a new module to solve the heat dissipation problem. However, provision of a new heat dissipation module always brings additional research and manufacturing costs for the manufacturers. As to the customers, when the electronic components of their computers or network servers which use the original modules are to be upgraded, the overheat problem, which results in the component damage or life span reduction, will still be encountered. At the same time, since electronic devices are developed toward a miniaturization trend, the space for accommodating the motherboard on which electronic components are mounted and the heat dissipation modules will thus become more limited than before. Therefore, it is quite important to develop a flexible module that can increase heat transfer capacity immediately without compromising the high speed requirement for an advanced electronic component, and can thus eliminate the need of making a new heat dissipation module for coping with increased heat dissipation concern when the upgrade of the electronic component is required. 
     SUMMARY OF THE INVENTION 
     In order to solve the above-mentioned problems, a primary objective of the present invention is to provide a heat-dissipating device for an electronic component, that can fit various heat dissipation requirements, allowing the manufacturing cost for the heat-dissipating device to be reduced. 
     Another objective of the invention is to provide a heat-dissipating device for an electronic component, that is attachable one with another and is convenient in assembly. 
     A further objective of the invention is to provide a heat-dissipating device for an electronic component, that can increase the heat transfer area and the heat dissipation efficiency simply by increasing the number of the heat-dissipating devices that are attached one with another. 
     A still further objective of the invention is to provide a heat-dissipating device for an electronic component, that is simple in structure and can be easily mounted with the electronic component. 
     In order to achieve the above and other objectives, a heat-dissipating device for an electronic component is proposed by the present invention, which comprises: a main body adapted to be mounted on an electronic component, the main body being formed with at least a joining portion; at least a heat pipe detachably coupled to the joining portion in a manner that, at least a portion of the heat pipe is exposed to the exterior of the main body; and at least a heat-dissipating block detachably coupled to the exposed portion of the heat pipe, whereby the heat generated from the electronic component can be transferred via the main body and the heat pipe to the heat-dissipating block. 
     The joining portion of the main body is configured as a short cylinder, and formed with a central bore that extends into the main body, with a connecting portion provide at a periphery of the short cylinder and surrounding the central bore. 
     The heat pipe is configured as an elongated tube, one end of which is inserted into the main body through the central bore of the joining portion, whereas the other end of the heat pipe is exposed to outside of the main body, for being fitted with a plurality of the heat-dissipating blocks, so as to allow the heat generated from the electronic component to be rapidly transferred through the heat pipe to the heat-dissipating block for dissipation. 
     The heat-dissipating block is a tubular body formed at a periphery thereof with a plurality of heat sinks. One end of the tubular body is provided with a first connecting portion, and the other end thereof is formed with a second connecting portion. A plurality of the heat-dissipating blocks can be in series coupled to the heat pipe in a manner that, a first connecting portion of a heat-dissipating block is joined with a second connecting portion of another adjacent heat-dissipating block, so as to increase the heat transfer area for allowing better performances of heat dissipation. 
     Further, the heat sinks formed on the heat-dissipating block are not limited to particular shape, number and extension direction as shown in the drawing. For example, the heat sinks can be configured as fin or radiating shape, as long as the configuration is capable of enlarging the heat transfer area as desired in the invention. 
     The connection between adjacent heat-dissipating blocks can be achieved by adopting any conventional connection means; nevertheless, it is preferred that the heat-dissipating blocks are attached to each other by means of threads, so as to optimize heat transfer area and heat dissipation efficiency. 
     Moreover, among the heat-dissipating blocks coupled to the heat pipe, a heat-dissipating block positioned closest to the main body has its second connecting portion threadedly joined with the connecting portion of the main body; whereas a heat-dissipating block located farthest from the main body has its first connecting portion threadedly engaged with a threaded portion of a nut. The nut is then fixed by using a shoe, so as to firmly hold the heat-dissipating blocks coupled to the heat pipe in position. 
     The number of the joining portion formed on the main body is not limited to one, but can be more as necessary. Also, the length and number of the heat pipe, and the number of the heat-dissipating block coupled to the heat piper, are not particularly restricted. Besides straight tube structure, the heat pipe can be designed in other shapes, for example, a tube bent by 45, 90 or other degrees. It is understood that, the foregoing elements can be flexible in arrangement and design so as to be properly incorporated with a computer or server, and to optimize the effectiveness of heat dissipation. 
     Furthermore, the central bore of the joining portion can be made to penetrate the main body, allowing the heat pipe, that is inserted into the main body through the central bore, to expose its both ends to the exterior of the main body, so as to provide more flexibility of element arrangement on a motherboard. 
     Alternatively, besides insertion of the heat pipe into the main body, the heat pipe can be integrally formed with the main body at one side or two opposite sides of the main body. In combination of any arrangement and design of the main body incorporated with the heat pipe, the heat-dissipating device of the invention can be suitably applied to various electronic components, especially to a computer or server demanding for high efficacy of heat dissipation. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The present invention can be more fully understood by reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings, wherein: 
     FIG. 1 is a cross-sectional view of a heat-dissipating device of a preferred embodiment of the invention; 
     FIG. 2 is a perspective view of a main body of the invention; 
     FIG. 3 is a perspective view of a heat-dissipating block of the invention; 
     FIG. 4 is a cross-sectional view of a heat-dissipating block of the first invention; and 
     FIG. 5 is a perspective view of a heat-dissipating device of another preferred embodiment of the invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to FIGS. 1 and 2, a heat-dissipating device for an electronic component of the invention is composed of a main body  10 , a heat pipe  20  and three heat-dissipating blocks  30 . It is understood that, the number of the heat-dissipating block  30  is not limited to that illustrated in the drawing, but can be varied according to practical usage. The main body  10  is adapted to be mounted on an electronic component  50 , such as a CUP of a computer, via a thermally-conductive adhesive  40  for facilitating the transfer of the heat generated from the electronic component  50 . A joining portion  11  is provided on one of the lateral sides of the main body  10 , and consists of a central bore  111  surrounded by a connecting portion  112 . Additionally, the main body  10  is provided with legs  113  for affixing the main body  10  onto a motherboard  60 . A first end  201  of the heat pipe  20  is inserted into the main body  10  through the central bore  111  of the joining portion  11 ; a second end  202  of the heat pipe  20  is exposed to the exterior of the main body  10 , for transferring the heat generated from the electronic component  50 . The heat-dissipating block  30  is coupled to the exposed second end  202  of the heat pipe  20 . This allows the heat generated from the electronic component  50  to be transferred via the main body  10  and heat pipe  20  to the heat-dissipating block  30  for effective dissipation to the atmosphere in facility with a fan (not shown) provided in the electronic component  50 . 
     As shown in FIG. 2, the joining portion  11  of the main body  10  is configured as a short cylinder having a central bore  111  axially connected to the interior of the main body  10 , and a connecting portion  112  surrounding the central bore  111 . As shown in FIG. 1, the heat pipe  20  is an elongated tube, with its first end  201  penetrating through the central. bore  111  of the joining portion  11  to be inserted into the main body  10 , whereas the second end  202  of the heat pipe  20  is exposed to the exterior of the main body  10 , for being fitted with the heat-dissipating block  30 . 
     Referring to FIGS. 3-4, the heat-dissipating block  30  is configured as a tubular body having a plurality of annular heat sinks  303  formed on a circumferential surface of the tubular body. A first connecting portion  301  is formed at one end of the tubular body, and a second connecting portion  302  dimensioned in engagement with the first connecting portion  301 , is provided at the other end of the tubular body. Therefore, a plurality of heat-dissipating blocks  30  can be in series coupled to the heat pipe  20  in a manner that, a first connecting portion  301  of a heat-dissipating block  30  is engaged with a second connecting portion  302  of an adjacent heat-dissipating block  30 . It is understood that, the connection between adjacent heat-dissipating blocks can be achieved by adopting any conventional connection means; nevertheless, it is preferred that the heat-dissipating blocks are attached to each other by means of threads formed at the connecting portions, so as to optimize the heat transfer area and heat dissipation efficiency. 
     Furthermore, the heat sinks  303  formed on the heat-dissipating block  30  are not limited to particular shape, number and extension direction as shown in the drawing. For example, the heat sinks  303  can be configured as fin or radiating shape, as long as the configuration is capable of enlarging the heat transfer area as desired in the invention. 
     Referring back to FIG. 1 with three heat-dissipating blocks  30  coupled to the heat pipe  20  as illustrated, a heat-dissipating block  30  positioned closest to the main body  10  has its second connecting portion  302  threadedly joined with the connecting portion  112  of the main body  10 ; whereas a heat-dissipating block  30  located farthest from the main body  10  has its first connecting portion  301  threadedly engaged with a threaded portion  701  of a nut  70 . The nut  70  is then fixed by using a shoe  80 , so as to firmly hold the heat-dissipating blocks  30  coupled to the heat pipe  20  in position. 
     Furthermore, as shown in FIG. 2, the number of the joining portion  11  formed on the main body  10  is not limited to one, but can be more as necessary. Also, the length and number of the heat pipe  20 , and the number of the heat-dissipating block  30  coupled to the heat pipe  20 , are not particularly restricted. Besides straight tube structure, the heat pipe  20  can be designed in other shapes, for example, a tube bent by 45, 90 or other degrees. It is understood that, the foregoing elements can be flexible in arrangement and design so as to be properly incorporated with a computer or server, and to optimize the effectiveness of heat dissipation. 
     FIG. 5 illustrates a heat-dissipating device of another preferred embodiment of the invention. The heat-dissipating device of this embodiment is approximately identical in structure to that of the foregoing embodiment. The only difference is that, the central bore  111  of the joining portion  11  can be made to penetrate the main body  10 , allowing the heat pipe  10 , that is inserted into the main body  10  through the central bores  111 , to expose its both ends to the exterior of the main body  10 , so as to provide more flexibility of element arrangement on the motherboard  60 . 
     Alternatively, besides insertion of the heat pipe  20  into the main body  10 , the heat pipe  20  can be integrally formed with the main body  10  at one side or two opposite sides of the main body  10 . In combination of any arrangement and design of the main body  10  incorporated with the heat pipe  20 , the heat-dissipating device of the invention can be suitably applied to various electronic components, especially to a computer or server demanding for high efficacy of heat dissipation. 
     In conclusion, the invention has the following advantages over the prior art. First, multiple heat-dissipating blocks connected in series with one another, can enlarge the heat transfer area to provide sufficient heat dissipation for upgraded electronic components, without the need of developing new heat dissipation modules, thereby saving manufacturing costs as desired for economic principles. Further, no manufacture of new heat dissipation modules also reduces environmental pollution and assures environmental protection. Moreover, the heat transfer area can be further enlarged simply by increasing the number of the heat-dissipating blocks used in the heat-dissipating device of the invention, thereby allowing heat dissipation efficiency to be desirably improved. In addition, elements of the heat-dissipating device of the invention can be arranged and designed in compliance with configuration of an electronic component where the heat-dissipating device is to be mounted; this therefore provides great flexibility in application of the heat-dissipating device, so as to fulfill the heat dissipation requirement for the electronic component. 
     The invention has been described using exemplary preferred embodiments. However, it is to be understood that the scope of the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements. The scope of the claims, therefore, should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.