• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.8
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• pp.1-7
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• 2009

This study is intended to propose the environment friendly lighting which can be excluded the element of obtrusive light(glare, spill light) and to make the sight environment of the external and internal road more comfortable as newly approaching the lower positioned lighting from the current high pole lighting. Taking account of the current situation of putting the stress on the road sight scene. It is proposed the study focused on the aesthetic design for playing a role of scenery. For this, it is searched used situation of the low light at interior of the country and abroad and tried to find the improvement. Also it is tried find out how to raise the effectiveness. And throughout the site inspection and the data searching about the road facility of a road to be installed the low height lighting, it is suggested the standard of the lighting installation and the direction for the future on the light design and development of the low height lighting which is suitable for the domestic situation.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.17 no.6
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• pp.185-201
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• 2018

Road lighting is highly preferred as the major nighttime road safety countermeasures. When it comes to the pole-type road lighting, as it's installed at a certain height from the road surface, the driver is dazzled by the light source, interrupting the driver's visibility and furthermore, the light leaks to the area outside the road boundary, worsening the energy efficiency as well as generating the light pollution to the surrounding environment including the animals and plants. The study developed the low-level lighting systems, so it is possible to prevent the lights from being strayed, so there is no any side effects in terms of the sleep deprivation. The study compared the performance as the lightings between low-level lightings and conventional pole based lighting systems. As the results, the low-level lighting systems showed the higher performance in terms of average surface luminance, uniformity, glare compared to the conventional lighting systems.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2008.05a
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• pp.25-28
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• 2008

수은이 함유된 방전등과 같은 조명기구의 사용이 제한되는 특수구역의 산업용 조명설비로 200 W 이상의 높은 소비전력의 백열등기구들이 사용되고 있다. 인공광원으로 백열전구는 매우 낮은 발광효율로 전력소모가 많고, 높은 방사열로 인해 화재의 염려가 있어 램프보호유리구를 장착하므로 낮은 조명률로 광 손실이 높게 발생한다. 또한 산업지역 내에서는 일반적으로 각종 전동기 및 공기조화 설비의 가동으로 진동이 심하며 여기에 백열전구 사용 시 당초 예상되는 수명보다 더욱 단축되고 있다. 이러한 지역에 설치된 백열등을 조명등기구 효율(Luminaire Efficacy)이 높은 친환경 에너지 절감형 차세대 광원인 LED조명등으로 대체하여 산업설비 지역 내 공급되는 조명용 소비전력을 크게 줄여 에너지 절약효과를 높임과 동시에 양호한 조명율의 LED광원을 사용함으로써 조명환경 개선에 따른 작업능률을 높이기 위해 특수지역의 산업용 LED조명등을 개발하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2000.11a
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• pp.129-134
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• 2000

우리 나라의 터널 조명은 운전자의 시야상태를 저해하는 불균일한 조도 균제도, 터널 내의 플리커 현상, 심한 눈부심 등과 함께 낮은 기구효율, 낮은 조명률, 높은 에너지 소비 등의 문제점을 갖고 있다. 이러한 것들을 개선하기 위해서 터널용 고효율 조명기구의 반사판을 개발하였고, 개발된 조명기구는 기구 자체 효율이 10%이상 상승함으로써 에너지의 절감과 조명효과의 상승을 가져왔으며, 기구 대수의 저감으로 건축비를 축소시켰다. 또한 이것을 이용한 터널조명에서는 평균조도 200[lx]이상, 전반 균제도 0.4이상, 차선축 균제도 0.7이상, 단위 면적당 소비전력 3.7 [W/$m^2$]이하의 효과를 얻었다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.17 no.6
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• pp.16-22
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• 2003

The purpose of this study was to provide visual evaluation data in a workstation space when different lighting types were applied. For the performance evaluation, Radiance program was used for simulations, and the mock-up room(15.0x11.6x3m) was used for the actual test. The results of this study were as follows; 1) When the inidirect lighting simulation data using Radiance was compared with the actual data in a small workstation space, there was a 6.5% difference. Therefore, Radiance program was proved to be useful for the evaluation of lighting performance. 2) Higher light levels (higher light ratio (%)) were recorded in the straddled layout and lower light levels (lower light ratio (%)) were recorded in the centered layout condition in most cases. 3) Also, the results show that the indirect luminaires and the straddled layouts provide higher uniformity, whereas the direct luminaires and the centered layouts have lower uniformity.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2008.10a
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• pp.165-168
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• 2008

성산 일출봉 정상으로 오르는 등반로의 조명환경에 대하여 실측하였다. 조명 기구는 제주의 돌을 가공한 것과 돌무덤 형태의 것이 시설되었으며 광원은 삼파장 램프와 소형 할로겐램프를 사용하였다. 조명기구 설치상황은 경사도가 낮은 구역은 거의 규칙적으로 시설되어 조도분포가 거의 균등하나 정상 부근의 경사도가 심한 구역에는 불규칙하게 설치되어 등반로 바닥 면에 비추는 조도가 0.1[lx] 이하가 되는 부분이 상당수 있었으며 눈부심을 유발하는 곳도 있었다. 본 논문에서는 등반로 바닥면 조도가 낮은 곳을 선정하여 조명시설에 대하여 설치간격, 설치형태 및 바닥면 조도를 실측하여 해석하고 모델링을 하였다.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.191-192
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• 2012

옥외 LED 조명은 수 많은 응용 분야가 있고, 출력 전력 크기에 따라 전력단이 single-stage 와 two-stage 구조로 나뉜다. Single-stage 구조는 낮은 전력 LED 조명에 적합하지만, 60~70W 이상에서는 효율이 떨어지고 변압기의 크기가 커져서 적용하기가 힘들다. 반면에 two-stage 구조는 보통 큰 전력이 필요한 응용분야에 사용되지만, 낮은 부하에서 낮은 역율을 나타내므로 넓은 출력전력 범위를 갖는 분야에 사용되기 어렵다. 이 문제를 해결하기 위하여 본 논문은 pulse duty cycle, pulse frequency modulation 제어 방법을 갖는 interleaved single-stage flyback AC-DC converter 를 제안한다. 제안된 컨버터는 입력 전압이 낮고 부하가 큰 경우 높은 효율을 보이고, 입력 전압이 높고 부하가 아주 작은 경우에도 높은 역율과 낮은 전류 왜곡을 보인다. 그 결과 하나의 AC-DC 컨버터를 넓은 출력전력 범위를 갖는 LED 조명분야 적용시킬 수 있다. 제안된 컨버터의 타당성을 검증하기 위하여 81W prototype을 가지고 실험하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.15 no.2
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• pp.1-6
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• 2001

Tunnel lighting in Korea has the problems of unsatisfactory illuminance uniformity which obstructs driver's vision, a flicker phenomenon on wall of tunnel, a heavy glare, low efficiency of luminaires, low utilization factor, and high energy consumption. We developed a high efficiency luminaire reflector for tunnel lighting which removes these problems. Developed luminaire saves energy and improves lighting environment by increasing 10% of luminaire efficiency. It can reduce installation cost by decreasing the number of luminaires, while average illuminance of 200[lx], overall uniformity of 0.4, longitudinal uniformity of 0.7, and electric power consumptions per unit area of 3.7[W/m$^2$] are accomplished.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.8 no.1
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• pp.29-36
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• 1994

Exhibitlon lighting design be done after due consideration of the photochemical reaction and heating effcts upon exposure to light In this study the balanced judgement is as follows. 'The most light-susceptible material should be illustrated less than 5O(lx](illumlnance-hours per year: 120,OOOlx.h)and the illuminance of moderately sensitive material is 200(lx] (illuminance hours per year: 480,OOOlx.h). Moreover to minimize damage the sources of light should not only contribute as little as heat possible but remove ultraviolt radiation by filters. Also the sources of light must have good color rendering and low color temperature.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.10a
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• pp.103-105
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• 2009

A Study on the Replace Broadcasting Image Lighting fixture of LED so electrical charges, eye many of be dazzling, very hot of tungsten halogen light fixture take a photograph studio image in low space studio