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小功率(3014)LED設計及光電熱性能分析

時間:2019-06-09 14:20來源:畢業論文
使用對同一 3014 光源進行一定溫度梯度的熱性能分析, 研究節溫、 熱阻以及電壓隨著溫度變化而改變的情況,從而分析溫度變化對三者的影響。針對光源的電性能分析

摘要:隨著經濟的發展以及工業技術的提升,人們對環保的要求不斷提高,相應的對綠色光源的需求也與日俱增。LED 是被公認的第四代光源,是 21 世界最有前景的新光源,將取代白熾燈和日光燈成為照明市場的主導。伴隨 LED 發光效率的提高,特別是在上世紀九十年代末白光LED 的發明, 為 LED 在照明領域的應用打開了空間,使之成為繼白熾燈、熒光燈、高壓氣體放電燈之后的新一代光源。在LED 封裝過程中,熒光粉、硅膠及封裝結構等都對光通量產生直接影響。在順應時勢的情況下,LED 得到了很好的利用和發展。LED 具有體積小,開啟快,無頻閃,節能環保,綠色耐用等優點。經過長期的研究發展,今年的諾貝爾獎獲得領域即為LED 領域,因而對于 LED 的研究是近幾年的發展潮熱期。然而,盡管如此,對于 LED 的綜合全面研究基礎資料卻亟待加強完善,針對晚來的入門者來說,很難找到全面的基礎研究資料,進行自我研究學習和了解。基礎光源的性能大同小異,本文主要以 3014 為研究對象,通過基本的設計以及光電熱性能分析,對光源的性能做一個全面的分析和解剖。針對光源的設計以及光性能而言, 本文設計的研究方法是在改變光源支架設計結構,控制其余的另外一切變量同等的情況下進行封裝,并對支架改變前后的成品光源進行光通量等光性能的測試對比分析, 從而探索支架設計的改變對于光性能的影響情況。此外,本文還針對同一種 3014 光源進行不同時長的老化,然后對不同老化期限的光源進行對比測試分析。 老化的方式有點亮的情況下進行的電學老化以及未點亮的情況下進行的環境老化。針對光源的熱性能分析,本文主要研究方法是使用對同一 3014 光源進行一定溫度梯度的熱性能分析, 研究節溫、 熱阻以及電壓隨著溫度變化而改變的情況,從而分析溫度變化對三者的影響。針對光源的電性能分析,本文進行的研究內容是在恒流的情況下,針對同等封裝條件的 3014 光源進行不同輸入電壓的測試,從而了解該光源的最低開啟電壓以及最佳輸入電壓。36094 源`自*六)維[論*文'網www.mmeqir.tw
畢業論文關鍵詞: LED;LED 設計;LED 支架;LED 光性能;LED 熱性能;LED 電性能;光通量
Low power (3014) LED light design and performanceanalysis
Abstract : With the development of economy and the ascension of industrialtechnology, the requirement of environmental protection gradually strengthens, sothere is an increasing demand for green light source. LED, as the fourth generationof light source, is the 21st century the most promising new light source, which willreplace the incandescent lamp and fluorescent lamp and become the dominant in thelighting market. With the enhancement of LED luminous efficiency, especially in the90s of last century, the invention of the white LED opens the space for the applicationof LED in lighting field, making it a new generation of light source followingincandescent lamp, fluorescent lamp and high pressure gas discharge lamp. In the caseof temporization, LED has achieved good use and development. LED has manyadvantages such as a small size, a fast opening time, no stroboscopic, energyconservation, environmental protection, and durable wait. Through long-term researchand development, the Nobel Prize is awarded to the field of LED this year, and so thestudy of the LED will become a developing trend in recent years. However, in spite ofabove these, the comprehensive research of basic data for LED still needs to beimproved, e.g., the impact of fluorescent powder, silica gel and encapsulationstructure on flux in the process of LED encapsulation, because it is difficult to find thebasis of comprehensive data for the late starters to learn and understand myself. Inthis article , a comprehensive analysis was performed on the performance oflow-power 3014 through designing the basic structure and analyzing the optical andelectric performance and thermal conductivity.For the design of the light source and optical performance, under the the sameother variables, the light bracket design structure is changed and then the change ofoptical performance such as luminous flux and etc. of the finished products wasanalyzed to explore the effect of the stent design change on the properties of lightsource. In addition, the same kinds of light sources, i.e., 3014 were aged for thedifferent time, and then the lighting performance of light source with different agingperiod were comparatively tested and analyzed. Aging means include light of electrical aging and aging environment without light.As to thermal performance analysis of the light source, in this paper, the thermalperformance of the same 3014 light source was analyzed in a certain temperaturegradient. We explored the dependence of the junction temperature, thermal resistanceand voltage on the temperature change.For electrical performance analysis of light source, this paper focused on the testof different input voltage for 3014 light source with the same encapsulation conditionat the constant current, to understand the lowest opening voltage and the best inputvoltage of the light source. 小功率(3014)LED設計及光電熱性能分析:http://www.mmeqir.tw/wuli/20190609/34423.html
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