Abstract:
A cooling device for electronic components is a combination of substrate (aluminum nitride substrate—thermoelectric elements—aluminum nitride substrate) and utilizing the temperature difference generated by two top and bottom ends of the cooling device to effectively remove the heat generated by the electronic components. This cooling device not only can effectively reduce temperature of the electronic components, but also store the power generated by its thermoelectric effect.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a cooling structure for thermoelectric components, and more particularly to a cooling device integrated a thermoelectric cooling element with thermoelectric components. 
         [0003]    2. Description of Related Art 
         [0004]    That all electronic components generate heat is a natural phenomenon, which affects the lifespan and designed performance of the components. Therefore a large number of solutions for this phenomenon are emerged, in particular, to reuse the heat generated by electronic components as a new energy, which becomes the subjects the R &amp; D staffs specialize in. 
         [0005]    Take light emitting diode (LED) for example, which is a daily use electronic component, having the advantages of environmental friendly, energy-saving, small size, high efficiency, long usage lifespan, etc. so that LED is widely used in daily life, such as LCD backlight, mobile phone backlight, signal lights, headlights, street lamps, art lighting, architectural lighting, and stage lighting control, home lighting, etc. 
         [0006]    With the development of the LED industry and the increase of user need, the LED gradually reaches high-power, high-brightness and high-performance. However, a lot of heat generated by high-power LED can not be effectively excluded, which results in high the LED Junction Temperature, so that the LED brightness is reduced or even extinguished. 
         [0007]    Because only about 15 to 20% electrical energy of the LED input power can be converted into light, nearly 80 to 85% electrical energy is converted into heat. If the heat generated by the LED light can not be exhausted, the LED Junction Temperature will be higher, which causes a qualitative change to the LED surrounding materials as phosphors and packaging plastic, and influences the LED luminous efficiency, stability and service life. Therefore effective control of LED products&#39; byproduct, heat, is a very significant issue. 
         [0008]    Therefore in addition to the heat dissipating effect of the heat sink is the primary design consideration, other factors such as the weight, size, appearance, convenience and application thereof and reuse of the energy released from the electronic components are still factors the industry needs to take into consideration. 
         [0009]    In view of the drawbacks derived from the conventional technology, the inventor has tried hard to transform the heat energy generated by the electronic elements into a renewable energy. And the appearance, volume and weight of the invention are also considered at the same time. After years of research, a cooling device for electronic components is proposed in the present invention so as to solve the above-mentioned problems. The present invention is described below. 
         [0010]    The invention, as well as its many advantages, may be further understood by the following detailed description and drawings in which: 
       SUMMARY OF THE INVENTION 
       [0011]    The primary objective of the present invention is to provide a cooling device for electronic components, which effectively resolves the heat dissipation problem encountered in the operation of the conventional electronic components, and achieves the goal of extending usage lifespan, weight and size reducing, and the appearance aesthetic design. 
         [0012]    A further objective of the present invention is to transform the heat generated by the electronic components in operation into a renewable energy by using the temperature difference of thermoelectric effect, and the energy is to be stored in battery as a spare power. 
         [0013]    In order to achieve the above mentioned objective, the present invention provides a cooling device for electronic components, including: a first substrate configured as a metallized circuit, having a first surface and a second surface; at least one electronic element configured on the first surface of the first substrate and coupled to the metallized circuit, a thermoelectric element configured on the second surface of the first substrate so as to conduct the heat generated by the at least one electronic element, and a second substrate having a third surface and a fourth surface, the third surface of the second substrate coupled to the thermoelectric element, so as to conduct the heat to the fourth surface, and a battery coupled between the first substrate and the second substrate for storing energy generated by the cooling device, wherein a thermoelectric effect is generated by thermal temperature differences therebetween, wherein the first substrate and the second substrate are made of an insulating ceramic material selected from one of the following group consisting of: alumina and aluminum nitride. 
         [0014]    Preferably, the at least one electronic element is one selected from the following group consisting of: an LED, a CPU and a solar focusing device. 
         [0015]    Preferably, the thermoelectric element includes: a first conductive layer including a plurality of first electrodes, configured on the second surface of the first substrate, a second conductive layer comprising a plurality of second electrodes, configured on the third surface of the second substrate; and a plurality of N-type semiconductors and a plurality of P-type semiconductors, wherein the plurality of N-type semiconductors and the plurality of 
         [0016]    P-type semiconductors are alternatively configured between the plurality of first electrodes and the plurality of second electrodes, and are coupled to the plurality of first electrodes and the plurality of second electrodes so as to form a current loop. 
         [0017]    Preferably, the first surface of the first substrate is a cooling surface. 
         [0018]    Preferably, the first surface of the first substrate is a heating surface. 
         [0019]    The technical characteristics and operation processes of the present invention will become apparent with the detailed description of preferred embodiments and the illustration of related drawings as follows. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0020]      FIG. 1  is a structure diagram showing a preferred embodiment of the present invention; 
           [0021]      FIG. 2  is a perspective cross sectional view of a preferred embodiment of the present invention; and 
           [0022]      FIG. 3  is a schematic view showing a finished product of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0023]    With reference to  FIG. 1 , which is a structure diagram shows a preferred embodiment of the present invention. The present invention utilizes the heat temperature difference of the cooling chip to be applied to the cooling device of the electronic components. This embodiment uses an LED element as a light component. The heat generated by the LED chip is sent to the cooling chip to reduce the temperature of the LED. This design can also be proven to greatly reduce the LED overall size and weight. 
         [0024]    The cooling device of this embodiment includes: a first substrate  11  configured as a metallized circuit, having a first surface  111  and a second surface  112 , at least one electronic element  14 ,  15  being LED chip  14  and LED lens  15  respectively, configured on the first surface  111  of the first substrate  11  and coupled to the metallized circuit; a thermoelectric element  13  configured on the second surface  112  of the first substrate  11  so as to conduct the heat generated by the at least one electronic element  14 ,  15 , and a second substrate  12  having a third surface  121  and a fourth surface  122 , the third surface  121  of the second substrate  12  coupled to the thermoelectric element  13 , so as to conduct the heat to the fourth surface; and a battery coupled between the first substrate and the second substrate for storing energy generated by the cooling device, wherein a thermoelectric effect is generated by thermal temperature differences therebetween, wherein the first substrate  11  and the second substrate  12  are made of an insulating ceramic material and selected from one of the following group consisting of: alumina and aluminum nitride. 
         [0025]    Wherein the thermoelectric element  13  includes: a first conductive layer including a plurality of first electrodes  131 , configured on the second surface  112  of the first substrate  11 , a second conductive layer including a plurality of second electrodes  132 , configured on the third surface  121  of the second substrate  12 , a plurality of N-type semiconductors  134  and a plurality of P-type semiconductors  133 , wherein the plurality of N-type semiconductors  134  and the plurality of P-type semiconductors  133  are alternatively configured between the plurality of first electrodes  131  and the plurality of second electrodes  132 , and are coupled to the plurality of first electrodes  131  and the plurality of second electrodes  132  so as to form a current loop. 
         [0026]    The technical idea of the present embodiment is to combine a thermoelectric cooling chip (Bi2-Te3) with the semiconductor elements  133 ,  134 , conductors  131 , 132  and the ceramic material as a cooling device by using the principle of thermoelectric effect. 
         [0027]    When the current is input into the cooling device, heat can be transferred by the cooling device from one end (N→P endothermic, cold end, as the third surface  121  on the first substrate  11 ) to the other end (P→N exothermic, hot end, as the fourth surface  122  on the second substrate  12 , to form a temperature difference phenomenon between a hot side and a cold side of the cooling device. The greater the input current is, the greater the temperature difference will be. The maximum temperature difference of the best finished product has been up to 74° C. 
         [0028]    The greater the temperature difference between the hot side and the cold side of the cooling device is, the greater the electric energy generated by the thermoelectric effect is. So that the cooling device further has a battery  17  used to store the electric energy of thermoelectric effect generated by the temperature difference between the first substrate  11  and the second substrate  12  of the cooling device. 
         [0029]    With reference to  FIG. 2 , this figure is a perspective cross sectional view of a preferred embodiment of the present invention. It is to be noted that a dielectric substrate  22  is coated on the upper and lower layers of the cooling device  21 . Between the dielectric substrate  22 , a plurality of N-type semiconductors  24  and P-type semiconductors  25  are coated by two layers of plural conductors  23 , wherein the plurality of N-type semiconductors  25  and the plurality of P-type semiconductors  24  are alternatively configured between the two layers of plural conductors  23 , and coupled to the upper and lower electrodes formed by the two layers of plural conductors  23 , so as to form a current loop. 
         [0030]    So, the direction of current applied to the cooling device  21  can be controlled to cause a cold end on the upper side of the cooling device  21  and to cause a hot end on the lower side of the cooling device  21 , so as to conduct the heat. 
         [0031]    With reference to  FIG. 3 , which is a schematic view showing a finished product of the present invention. As shown in the figure, it is to be noted that the finished size of the cooling device  31  of the present invention is small, which is equivalent to a coin of NT ten dollars  30 . Each cooling device includes a cathode pin  32  and a negative pin  33  to connect the power source  16  as shown in  FIG. 1 . 
         [0032]    In summary, the cooling device of the present invention has high cooling efficiency to indirectly extend the lifespan of the configured components, it also has the characteristics of small size, light weight, long life, high reliability, environmentally friendly (without using refrigerant), easy maintenance, and energy reuse. Therefore the cooling device of the present invention is extremely suitable for electronic components and capable of high value in market demand. 
         [0033]    Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.