低功率高亮度LED燈(High Bright Light Emitting Diode Lamp)是推廣節能減碳的重要幫手,但是他的最大問題是在小單位面積的二極體中產生大熱量,造成二極體的溫度過高容易損壞元件,因此能夠有效的將熱量移除,將有助於LED燈壽命及功能。 除了提高LED燈的發光功率降低熱量的產生外,就是改善散熱鰭片的設計,本論文的研究主要為不安裝散熱風扇的高亮度LED燈的內部元件安裝設計及利用FLOTHERM V6.1進行數值模擬分析,以提出一個更有效的散熱方式。大致上主要結論有以下幾點(1)自然對流的環境下進行散熱時,輻射為一不可忽略之重要參數。(2)增加散熱鰭片表面的放射率有助於熱量移除。(3)散熱鰭片橫向且鰭片垂直地面方向,能達到最大的散熱。(4)散熱鰭片的尺寸愈大愈容易散熱(5)散熱鰭片的鰭片數量及厚度並非愈大愈好。
This is important to reduce the quantity of carbon dioxide to environment and to cut down on power for use low power HB LED lamp.(High Bright Light Emitting Diode Lamp)But the major question is big heat in small diode. The higher temperature will to damage diode. We can to remove the heat than to increase the life and efficient of LED lamp. The goal which we would reduce the heat production. We can raise the light efficient of LED. And we can change the design of heat sink. We began our study for HB LED which no use fan by thermal experiments and used the FLOTHERM V6.1 simulation software to provide a basic unit internal system thermal analysis. The analysis can provide effective way to dissipate heat. We have arrived at the following conclusions and recommendations. (1) The heat be dissipated under the environment of the natural convection, radiation is a very important parameter that can not be neglected. (2) To increase superficial emissivity of heat sink is good for dissipate heat. (3) We can dissipate most heat by put the heat sink is horizontal and its fins is Vertical. (4) It is good for dissipate heat by use more big size of heat sink. (5) Maybe is not good for dissipate heat by use more numbers and thickness of fins.