LED照明燈具的結(jié)構(gòu)設(shè)計與仿真
發(fā)布時間：2019-06-18 23:53
【摘要】：發(fā)光二級管LED被公認(rèn)為第四代照明器件，具有體積小、壽命長、可靠性高等優(yōu)點，已被廣泛應(yīng)用于交通信號燈、平板顯示、市政工程以及商業(yè)照明等。當(dāng)前LED照明燈具存在著許多技術(shù)難點：（1）LED驅(qū)動電源壽命短，影響燈具的使用壽命；（2）多芯片集成封裝的LED COB光源的效率較低，遠(yuǎn)距離照明應(yīng)用的LED光源光能的利用率較低；（3）LED照明燈具散熱器的散熱材料使用量大，LED光源基板與散熱器之間需要涂覆導(dǎo)熱硅脂，增加傳熱熱阻，大功率的LED燈具的傳熱熱阻大。本論文的主要工作有： 1、設(shè)計了可更換驅(qū)動電源的LED照明燈具，當(dāng)驅(qū)動電源發(fā)生故障時，使用者只需更換故障的驅(qū)動電源即可。把驅(qū)動電源設(shè)計成一個獨立的可更換的模塊，通過卡扣或螺紋結(jié)構(gòu)與散熱器實現(xiàn)機械連接，通過圓形電連接器或電極與LED光源基板實現(xiàn)導(dǎo)電連接，最終做出的樣品燈具證明該方法可行。 2、設(shè)計了一種出光表面帶有微結(jié)構(gòu)的多芯片集成封裝LED COB光源，利用凸起的四棱錐結(jié)構(gòu)增加光源內(nèi)的光出射錐角，從而提高多芯片集成封裝LEDCOB光源的光效，通過光學(xué)軟件仿真，光效提高50%左右；提出了一種帶有環(huán)形結(jié)構(gòu)的LED光源，讓發(fā)散角度大的光線經(jīng)反射或折射，然后以較小的發(fā)散角度出射，經(jīng)光學(xué)軟件仿真，結(jié)果表明發(fā)散角度較小。 3、設(shè)計了一種利用煙囪效應(yīng)增強對流散熱的散熱裝置，，把熱空氣約束在煙囪管道內(nèi)，通過增加空氣的浮升力，從而增強空氣的流動；提出了一種光源散熱一體化結(jié)構(gòu)的散熱器裝置，通過導(dǎo)熱液直接把LED光源基板的熱量傳導(dǎo)至散熱器，然后通過散熱器的散熱翅片進(jìn)行空氣對流散熱，對該裝置進(jìn)一步研究，設(shè)計出一種采用蒸汽氣囊散熱的散熱器；仿真了對流散熱不良的情況下，鋁材料表面氧化和未氧化所具有的不同紅外輻射發(fā)射率對照明燈具散熱的影響。
[Abstract]:LED is recognized as the fourth generation lighting device, which has the advantages of small size, long life and high reliability. It has been widely used in traffic signal lights, flat panel display, municipal engineering and commercial lighting. At present, there are many technical difficulties in LED lighting lamps and lanterns: (1) the life of LED driving power supply is short, which affects the service life of lamps and lanterns; (2) the efficiency of multi-chip integrated LED COB light source is low, and the utilization rate of LED light source applied in remote lighting is low; (3) the heat dissipation material of LED lighting lamp radiator is large, the heat conduction silicone grease needs to be coated between LED light source substrate and radiator, and the heat transfer thermal resistance is increased, and the heat transfer thermal resistance of high power LED lamps and lanterns is large. The main work of this paper is as follows: 1. The LED lighting lamp with replaceable driving power supply is designed. When the driving power supply fails, the user only needs to replace the faulty driving power supply. The driving power supply is designed as an independent replaceable module, the mechanical connection is realized with the radiator through the clasp or thread structure, and the conductive connection is realized with the LED light source substrate through the circular electrical connector or electrode. Finally, the sample lamp is made to prove that the method is feasible. 2. A multi-chip integrated packaging LEDCOB light source with microstructure on the light surface is designed. The raised four-pyramid structure is used to increase the light emission cone angle in the light source, so as to improve the optical efficiency of the multi-chip integrated packaging LEDCOB light source. Through optical software simulation, the optical efficiency is increased by about 50%. A LED light source with annular structure is proposed, which makes the light with large divergence angle be reflected or refracted, and then emits at a smaller divergence angle. the results of optical software simulation show that the divergence angle is small. 3. A heat dissipation device using chimney effect to enhance convective heat dissipation is designed. The hot air is confined to the chimney pipe, and the air flow is enhanced by increasing the floating force of the air. In this paper, a radiator device with integrated structure of light source heat dissipation is proposed, in which the heat of LED light source substrate is transferred directly to the radiator through hydrothermal solution, and then the air convective heat dissipation is carried out through the radiator heat dissipation fine. the device is further studied and a radiator with steam airbag heat dissipation is designed. The effects of different infrared radiation emissivity of aluminum surface oxidation and unoxidation on the heat dissipation of lighting lamps are simulated under the condition of poor convective heat dissipation.
【學(xué)位授予單位】：華僑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM923.34
[Abstract]:LED is recognized as the fourth generation lighting device, which has the advantages of small size, long life and high reliability. It has been widely used in traffic signal lights, flat panel display, municipal engineering and commercial lighting. At present, there are many technical difficulties in LED lighting lamps and lanterns: (1) the life of LED driving power supply is short, which affects the service life of lamps and lanterns; (2) the efficiency of multi-chip integrated LED COB light source is low, and the utilization rate of LED light source applied in remote lighting is low; (3) the heat dissipation material of LED lighting lamp radiator is large, the heat conduction silicone grease needs to be coated between LED light source substrate and radiator, and the heat transfer thermal resistance is increased, and the heat transfer thermal resistance of high power LED lamps and lanterns is large. The main work of this paper is as follows: 1. The LED lighting lamp with replaceable driving power supply is designed. When the driving power supply fails, the user only needs to replace the faulty driving power supply. The driving power supply is designed as an independent replaceable module, the mechanical connection is realized with the radiator through the clasp or thread structure, and the conductive connection is realized with the LED light source substrate through the circular electrical connector or electrode. Finally, the sample lamp is made to prove that the method is feasible. 2. A multi-chip integrated packaging LEDCOB light source with microstructure on the light surface is designed. The raised four-pyramid structure is used to increase the light emission cone angle in the light source, so as to improve the optical efficiency of the multi-chip integrated packaging LEDCOB light source. Through optical software simulation, the optical efficiency is increased by about 50%. A LED light source with annular structure is proposed, which makes the light with large divergence angle be reflected or refracted, and then emits at a smaller divergence angle. the results of optical software simulation show that the divergence angle is small. 3. A heat dissipation device using chimney effect to enhance convective heat dissipation is designed. The hot air is confined to the chimney pipe, and the air flow is enhanced by increasing the floating force of the air. In this paper, a radiator device with integrated structure of light source heat dissipation is proposed, in which the heat of LED light source substrate is transferred directly to the radiator through hydrothermal solution, and then the air convective heat dissipation is carried out through the radiator heat dissipation fine. the device is further studied and a radiator with steam airbag heat dissipation is designed. The effects of different infrared radiation emissivity of aluminum surface oxidation and unoxidation on the heat dissipation of lighting lamps are simulated under the condition of poor convective heat dissipation.
【學(xué)位授予單位】：華僑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM923.34
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
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2 張淑芳;方亮;付光宗;談笑鈴;董建新;陳勇;高嶺;;導(dǎo)熱涂層對LED散熱性能的影響[J];半導(dǎo)體光電;2007年06期
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