本文關(guān)鍵詞： LED光源模組 玻璃散熱器 熱模擬 LED結(jié)溫 熱流密度　出處：《華中科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：近些年來,由于LED具有響應(yīng)時(shí)間快、發(fā)光效率高、使用壽命長等特點(diǎn),其被廣泛應(yīng)用于照明領(lǐng)域、醫(yī)療等領(lǐng)域�？梢灶A(yù)見,LED將會(huì)取代傳統(tǒng)的白熾燈、節(jié)能燈,成為照明領(lǐng)域的主流。傳統(tǒng)的散熱材料各有優(yōu)缺點(diǎn)。本文提出了使用普通玻璃作為散熱器的想法,并提出了兩種利用玻璃作為散熱器的基本模型,即平板玻璃和玻璃管結(jié)構(gòu)。對(duì)于平板玻璃LED光源模組,長度對(duì)結(jié)溫的影響較小;平板玻璃LED模組的穩(wěn)態(tài)最高溫度隨著平板玻璃寬度的增加而下降,而且在平板玻璃寬度超過12mm時(shí)下降趨勢減緩;平板玻璃LED模組的穩(wěn)態(tài)最高溫度隨著平板玻璃厚度的增加而下降,在平板玻璃厚度大于4mm時(shí),這種下降趨勢減緩。并設(shè)計(jì)了一款平板玻璃LED燈具,其最高熱功率為1.26W,并且發(fā)現(xiàn)燈具的結(jié)溫與放置方向的關(guān)系并不大,并制作了樣品,測試了結(jié)溫。對(duì)于玻璃管LED光源模組,對(duì)于一定直徑的不封口的玻璃管散熱器來說,會(huì)有一個(gè)最佳壁厚,這個(gè)壁厚隨著直徑的增加而增大;隨著玻璃管直徑的增加,玻璃管LED光源模組的最高結(jié)溫整體呈下降趨勢,下降趨勢不斷減緩;同樣條件下,玻璃管不封口的模組的結(jié)溫要比封口的結(jié)溫要低;對(duì)于不封口的玻璃管光源模組,會(huì)存在一個(gè)結(jié)溫最低的放置角度。設(shè)計(jì)了玻璃管散熱的T6和T8 LED日光燈的模型,并證明這種日光燈結(jié)構(gòu)是可行的。設(shè)計(jì)了3管和7管玻璃LED模組和燈具的結(jié)構(gòu),并制作樣品、測試了結(jié)溫。提出了使用大面積的導(dǎo)熱能力強(qiáng)的材料作為導(dǎo)熱材料,玻璃作為散熱結(jié)構(gòu)來解決高熱流密度的情況。通過在平板玻璃LED光源模組中的光源下方增加一層0.3mm厚的鋁合金板,至少可以使單位長度上最高熱功率提高23%;將七玻璃管LED燈中間的一根玻璃管換成鋁管,至少可以使最高熱功率提高25%,將鋁管換成與線型LED光源接觸良好的鋁芯時(shí),最高熱功率會(huì)更高。
[Abstract]:In recent years, because of its rapid response time, high luminous efficiency and long service life, LED has been widely used in lighting, medical and other fields. In this paper, the idea of using common glass as radiator is put forward, and two basic models of using glass as radiator are put forward. For the flat glass LED light source module, the length has little effect on the junction temperature, and the steady-state maximum temperature of the flat glass LED module decreases with the increase of the plate glass width. The steady state maximum temperature of flat glass LED module decreased with the increase of the thickness of flat glass, and when the thickness of flat glass was more than 4 mm, the decreasing trend of plate glass width was slowed down, and when the thickness of flat glass was more than 4 mm, the steady state maximum temperature of flat glass module decreased. A flat glass LED lamp with a maximum thermal power of 1.26W was designed, and it was found that the junction temperature of the lamp was not related to the orientation of the lamp. A sample was made to test the closing temperature. For the glass tube LED light source module, For an unsealed glass tube radiator of a certain diameter, there will be an optimum wall thickness, which increases with the increase of the diameter of the glass tube, and the maximum junction temperature of the glass tube LED light source module decreases as a whole with the increase of the diameter of the glass tube. The downward trend is slowing; under the same conditions, the junction temperature of the unsealed glass tube module is lower than that of the sealed glass tube light source module; for the unsealed glass tube light source module, The model of the glass tube T6 and T8 LED fluorescent lamp is designed and proved to be feasible. The structure of the 3 tube and 7 tube glass LED module and lamp is designed, and samples are made. Test end temperature. Proposed the use of large areas of thermal conductivity of materials as thermal conductive materials, Glass is used as a heat dissipation structure to solve the problem of high heat flux. By adding a layer of 0.3 mm thick aluminum alloy plate under the light source in the flat glass LED light source module, The maximum thermal power per unit length can be increased by at least 23%; if one glass tube in the middle of the seven glass tubes LED lamp is replaced by an aluminum tube, the maximum thermal power can be increased by at least 25%, and the aluminum tube can be replaced by an aluminum core in good contact with the linear LED light source. The maximum thermal power will be higher.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN312.8;TQ171.7

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