Effect of different bending shapes on thermal properties of flexible light-emitting diode filament

doi:10.1088/1674-1056/27/11/110701

Abstract

Heat dissipation is an important part of light-emitting diode (LED) filament research and has aroused constant concern. In this paper, we studied the thermal performance of flexible LED filament by numerical simulation and through experiment. The heat dissipation characteristics of spring-like structure flexible LED filament were computed by finite volume method, and it was found that the chip junction temperature was closely related to the pitch and the bending radius. The effect of inclination angle of lighting LED filament was discussed because it is relevant to the spring-like structure flexible LED filament in geometry. The results demonstrated that the temperature of the filament increases as the inclination angle improves.

Keywords: flexible light-emitting diode filament heat dissipation numerical simulation spring-like

Received: 20 June 2018
Revised: 05 September 2018
Accepted manuscript online:

PACS:	07.05.Fb	(Design of experiments)
	07.05.Tp	(Computer modeling and simulation)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 51302171), Science and Technology Commission of Shanghai Municipality, China (Grant No. 14500503300), Shanghai Municipal Alliance Program, China (Grant No. Lm201547), Shanghai Cooperative Project, China (Grant No. ShanghaiCXY-2013-61), and Jiashan County Technology Program, China (Grant No. 20141316).

Corresponding Authors: Jun Zou, Yang Li
E-mail: zoujun@sit.edu.cn;liyang123@sit.edu.cn

Cite this article:

Liping Wang(王立平), Wenbo Li(李文博), Yichao Xu(徐一超), Bobo Yang(杨波波), Mingming Shi(石明明), Jun Zou(邹军), Yang Li(李杨), Xinglu Qian(钱幸璐), Fei Zheng(郑飞), Lei Yang(杨磊) Effect of different bending shapes on thermal properties of flexible light-emitting diode filament 2018 Chin. Phys. B 27 110701

[1]	Liu S and Luo X B 2011 LED Packaging for Lighting Applications:Design, Manufacturing and Testing (Singapore:Wiley)
[2]	Krames M R, Shchekin O B, Mueller-Mach R, Mueller G O, Zhou L, Harbers G and Craford M G 2007 J. Disp. Technol. 3 160
[3]	Schubert E F and Kim J K 2005 Science 308 1274
[4]	Ma Y, Hu R, Yu X, Shu W and Luo X 2017 Int. J. Heat Mass Transfer 106 1
[5]	Abdelmlek K B, Araoud Z, Ghnay R, Abderrazak K, Charrada K and Zissis G 2016 Appl. Therm. Eng. 102 251
[6]	Chhajed S, Xi Y, Li Y L, Gessmann T and Schubert E F 2005 J. Appl. Phys. 97 054506
[7]	Ye H, Mihailovic M, Wong C K Y, van Zeijla H W, Gielen A W J, Zhang G Q and Sarroa P M 2013 Appl. Therm. Eng. 52 353
[8]	Xie B, Hu R and Luo X 2016 J. Electron. Packag. 138 020803
[9]	Nakamura S and Fasol G 1997 Blue Laser Diode:GaN Based Light Emitters Lasers (Berlin:Springer-Verlag) pp. 16-20
[10]	Xu H Y, Chen X F, Peng Y, Xu M S, Shen Y, Hu X B and Xu X G 2015 Chin. Phys. B 24 067305
[11]	Qi W J, Zhang M, Pan S, Wang X L, Zhang J L and Jiang F Y 2016 Acta Phys. Sin. 65077801(in Chinese)
[12]	Norazlina M S, Dheepan Chakravarthii M K, Shanmugan S, Mutharasu D and Shahrom M 2017 Chin. Phys. B 26 098901
[13]	Chen H T, Lü Y J, Gao Y L, Chen Z, Zhuang R R, Zhou X F and Zhou H 2012 Acta Phys. Sin. 61 167104(in Chinese)
[14]	Arik M, Becker C, Weaver S and Petroski J 2004 Proc. SPIE 5187 64
[15]	Ma L, Yang Y and Liu J 2013 Heat Mass Transfer 49 85
[16]	Tian L X, Wen S S, Yao R H, Chen Y C and Xie J N 2014 Acta Opt. Sin. 34 1123002(in Chinese)
[17]	Christensen A and Graham S 2009 Appl. Therm. Eng. 29 364
[18]	Joo Y H and Kim S J 2015 Int. J. Heat Mass Transfer 83 345
[19]	Ha M S 2009 Thermal Analysis of High Power LED Arrays (MS Thesis) (Atlanta:Georgia Institute of Technology)

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