投影機的散熱技術一直是需要不斷的開發與研究的。隨著投影機體積日漸縮小，內部散熱問題日益嚴重，除了尋求更創新的散熱方案之外，尚需確實改善原有的散熱設計缺失，進而有效地將廢熱移除於功率逐漸增強的燈泡。因此如何正確並有效率的針對目前投影機散熱問題解析，並建立一套標準設計流程，使投影機內部系統達到理想的工作溫度，為本論文主要的研究方向與目標。
本論文的研究主要以熱流實驗為主，並輔以FLOTHERM V4.2數值模擬分析，將其結果整理出一套如何有效進行投影機散熱設計的分析程序與方法。我們進行了三次的熱流實驗，並輔以模擬計算結果，從中細部分析與探討系統中熱量與氣流的傳遞行為模式。並針對設計上的缺失提出具體的改善對策（例：如何加強燈芯之散熱效率、DMD之散熱模組設計、遮光板的設計等）。
經由熱流實驗與模擬分析的結果，我們可以歸納大致歸納以下幾個結論：（1）燈芯的主要散熱途徑是藉由鼓風扇提供的強制氣流，將熱氣帶出。（2）導風管的設計對於燈芯的散熱效率可以大大提高（3）適當的仰角可以提高鼓風扇的散熱效率。（4）遮光板的設計，除了可以避免燈泡光源外露，還可以對出風口的強制氣流降速及整流。

The heat dissipation technique of projector(s) is always a subject with continuous research and development needs. It is particularly important toimprove existing methods of heat dissipation and develop new techniquesin the face of improve electronic circuitry efficiencies. In this regard, theobjective of the present thesis is to investigate and discuss the appropriateanalysis of thermal problem in projector for the purpose of understandinghow and under what conditions heat dissipation occur, in order to achieveimprovements in current heat dissipation techniques, and to attain idealoperating temperature and internal systems heat control.
We began our study by thermal experiments and used the FLOTHERM V4.2 simulation software to provide a basic internal projector systemsthermal analysis. Results of experiments and simulations were used toanalyze current and systems heat flows, which served as the basis for ourrecommendations to improve existing heat dissipation techniques.
Making comparisons between the experiments and simulations analysis, we have arrived at the following conclusions and recommendations.
(1)The main heat dissipation way of bulb is the pressure air from blower.
(2)The design of Air Guide could improve the efficiency of bulb heat dissipation greatly.
(3)The proper elevation of blower could improve the efficiency of bulb heat dissipation.
(4)The design of light screen, besides preventing the light source of the bulb from exposing, could also lower the speed and rectification to the pressure air of vent and then reduce the noise of system.

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