本論文，是以設計使用發光二極體(Light Emitting Diode，LED)光源的室內燈具為主題，包含了光學設計與散熱片設計，並做一整合式研究分析，冀望能夠有效的改善LED室內照明燈具散熱和光效率衰減的問題，符合國際的室內照明燈具規範。 燈具光學設計使用多點光線追跡程式設計透鏡的曲面，將曲面的點匯入光學模擬軟體建立模型，並利用透鏡表面加上透鏡陣列來控制出光的角度、均勻度，得出結果之後實際量測燈具的角度、均勻度、光通量等特性，在照射距離2.5公尺下可得到均勻度65.32%，出光角度60度之透鏡，在燈具面積不變下，計算較佳的散熱片間距，利用有限元素分析軟體建立散熱模型，模擬LED燈具在三種功率下的散熱狀況，選擇較優良的模型實體製作，在室溫30℃下量測得出最高使用功率下的燈具溫度為52℃，與市售低轉數風扇的主動式散熱器比較溫度相差2℃，燈具效率衰減約6.5%，符合能源之星的室內燈具標準規範工作溫度60℃內，效率衰減需低於8%。 The research, we use the LED light source as the indoor lighting. It contains the optical design and heat dissipation sink design. We hope to improve LED indoor lighting efficiency and optical efficiency lost problem. And it conforms to international norms of indoor lighting. The optical design uses multi point tracing program to design the curve of the lens. Using optical modeling simulation software to simulate the situation of optical tracing. And add lens array to control the optics angle and uniformity. After we get the result, we will measure the actual lighting angles, optics uniformity, luminous flux. At distance of 2.5 meter, we get the optics uniformity is 65.32%, the lens of optics angle is 60 degrees. When the lighting size is limited, we calculate the better spacing of heat dissipation sink. Using Comsol software build heat model to simulate the heat dissipation of LED lighting in three difference output power. Choose the better one, we will make the actual heat dissipation sink and lighting. When output power is highest, we measure the lighting temperature is 52℃ at the room temperature 30 ℃. The data tell us that temperature difference between our heat sink and commercially available low-rpm fan active heat sink is 2℃, the lighting optical efficiency lost about 6.5%.This result conforms to work temperature below 60℃, and optical efficiency lost below 8% of Energy Star norms.
