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150 W LED Streetlight Optimal Design Using 21 W LED Engine

21 W LED 엔진을 이용한 150 W급 가로등의 최적설계

Shin, Wang-Soo;Lee, Seung-Min;Kim, Beom-Su;Park, Dae-Hee
신왕수;이승민;김범수;박대희

  • Received : 2015.11.25
  • Accepted : 2015.12.18
  • Published : 2016.01.01

Abstract

In this paper, the IES file was measured by applying a secondary optical lens to a 21 W LED engine, and the lighting calculation software RELUX was used to perform simulations with the data file of this measurement. For two-lane (two way) concrete paved roads, six LED engine are applied to each streetlight and simulation results show that Uo (uniformity) 0.56, UI (longitudinal uniformity) 0.86 and TI (threshold iIncrement) 9% which satisfies the required standards. RELUX was also used to LED streetlights by designing them in three dimensions, that is ${\pm}25%$ of the arm length of 2.8 m standardized by the road lighting standards of the Korea Expressway Corporation. Comparative analysis was carried out on adjustments were made in increments of 0.1 m that Uo, UI, and TI values in the range of arm lengths from 2.1 m~3.5 m. For the arm length range of 2.1 m~2.4 m, Uo was high, whereas UI was low. Therefore, we present the optimal light distribution values designed for an arm length of 2.5 m.

Keywords

LED;Secondary optical lens;Optimization design;Streetlight;Arm length

References

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Acknowledgement

Supported by : 원광대학교