隨著全球環保的意識抬頭，節能省電已成為當今的趨勢。LED 產業是近年來最受矚目的產業之一。發展至今，LED 產品已具有節能、省電、高效率、反應時間快、壽命週期長、且不含汞，具有環保效益…等優點。然而通常 LED 高功率產品輸入功率約為 20%能轉換成光，剩下 80%電
能均轉換為熱能[1]。一般而言，LED 發光時所產生的熱能若無法導出，將會使 LED 接面溫度過高，進而影響 產品生命週期、發光效率、穩定性，故LED燈的散熱就成了很重要可以討論的議題。
本研究是以利用精密鑄造法製作出不同形狀和不同材質的的散熱燈座，利用鑄造出來的散熱燈座去量測溫度，以量測到的溫度作為實驗的依據，並搭配模擬軟體COMSOL和田口方法來最佳化出適合燈座的熱對流係數，以實驗搭配模擬的方式來看燈座的散熱情形以及散熱途徑，發現若要做出有競爭性的LED燈泡產品，最重要的地方就是介面熱阻，若讓介面熱阻變小，則可以不使用導熱材料散熱膏，雖然有鰭片的燈座散熱性較好，但若基板與燈座的接觸面為緊密接觸，則可以省掉作鰭片的材料，則會讓產品更有競爭性，也利用模擬軟體找出燈座的熱對流係數，以便之後可當設計考量依據。

With the rising awareness of global environmental protection, energy saving has become a trend. LED industry is one of the most watched industry in recent years. Developed so far, LED products have the features of energy saving, high efficiency, fast response, long life, no mercury and environmental benefits etc. However, about 20% input power of high power LED products is converted into light and the remaining 80% is into heat. If the heat cannot be well dissipated, the LED junction temperature will be too high, which will influence the life cycle, luminous efficiency and stability of the LED. In the study, different shapes of heat-dissipated lamp holders are made by the precision casting technique with different materials. Afterwards, the LED’s, installed in the holders, are lit and the holder temperatures are measured simultaneously. Based on the measured temperatures, the COMSOL simulation software and the Taguchi method are employed to estimate the convection heat transfer coefficients and the interfacial heat transfer coefficients. With the estimated heat transfer coefficients, the temperature distributions and the heat transfers in the lamp holder can be analyzed. The key point of the heat dissipation is the interfacial heat transfer coefficient or the interfacial contact resistance. If the interfacial thermal resistance is small, it is not necessary to use the thermal grease to increase the heat dissipation at the interface. If the holder have fins on its surface, the fins can help the heat transfer. However, if the contact at the interface is good enough, the fins can be saved or eliminated, which could make the product more competitive. The analysis results obtained from the thesis could be used as an important reference for the future design of lamp holder.

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