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The purposes of this study are to conduct comparison and analysis of discomfort glare of LED lamp that replace fluorescent lamp, to examine influence of diffuse plate on discomfort glare, and to secure data after comparing and analyzing influence of color temperature of lighting on discomfort glare. With these purposes, this study was conducted in four steps. 1) A full-size mock-up was built to install fluorescent lamp and replace it with LED lamp and various diffuse plates. 2) Physical features were measured based on different experimental variables, and discomfort glare of fluorescent and LED lamps were compared and analyzed. 3) Difference of discomfort glare due to transmittance of diffuse plate attached to the lower part of a luminaire was compared and analyzed both for fluorescent and LED. 4) An experiment to examine discomfort glare based on different color temperature of fluorescent and LED lamps was conducted and the result data was compared and analyzed. The result of the experiments showed that LED lamps had a worse discomfort glare than fluorescent lamp under the same luminance, and difference between the two light sources became large as luminance got higher. When the transmittance of diffuse plate was 58%, discomfort glare of fluorescent and LED lamps changed in the same way. When the transmittance of diffuse plate was 71%, discomfort glare of LED lamps increased more than fluorescent lamp according to increase in luminance. When the transmittance of diffuse plate was 83%, discomfort glare of fluorescent lightings became higher under the lower luminance and that of LED lamp became higher under the higher luminance. When diffuse plate was not installed, discomfort glare of LED lsmps was higher in general under the same luminance. When color temperature was less than 5000K, discomfort glare of LED lamps was higher than fluorescent lamp under the same luminance and color temperature. When color temperature was more than 6000K, discomfort glare of fluorescent lightings was higher than LED lamps.
본 연구의 목적은 형광등조명기구와 LED조명기구와의 물리적 특성을 비교하여 LED조명기구의 기본적인 특성을 분석하는데 있다. 여기서 두가지 조명기구의 균제도 및 휘도분포 측면에서 비교ㆍ분석하여 LED조명기구를 건축실내공간에 적용하기 위한 자료를 작성하였다. 연구는 4단계로 나누어 진행하였다. 첫째, 기존의 조명기구와 비교한 LED조명광원의 이론적인 검토를 하였다. 둘째, 연구의 목적에 부합되도록 실험변인을 조절할 수 있는 실물대모 형(Mock-up)을 제작하였다. 셋째, 설치된 실물대모형을 이용하여 조명기구별 균제도ㆍ휘도분포를 측정하였다. 최종적으로, 기존의 형광등기구와 LED조명기구간의 균제도ㆍ휘도분포 특성을 비교분석하였다 . 연구결과 LED조명기구가 균제도 0.569로 기존 형광등조명기구의 균제도 0.522보다 높아 균일한 조도분포 특성을 보이고 전반확산이 양호한 것으로 나타났다. 또한 휘도분포를 측정한 결과 LED조명기구가 보다 균일한 휘도분포특성을 보였고, 벽면의 휘도분포는 형광등조명기구에 의한 최대휘도가 180.6[cd/㎡]LED조명기구는 155.26[cd/㎡]로 형광등이 높고, 평균휘도는 형광동조명기구가 44.32[cd/㎡]LED조명기구가 58.65[cd/㎡]로 LED조명기구가 높게 나타났다. 이상의 결과로 볼 때, LED조명기구가 형광등조명기구보다 재실자에게 보다 쾌적한 작업환경을 구성할 수 있는 조명이라 판단된다. This study is intended to compare physical properties of fluorescent luminaires with ones of LED lwninaires so as to analyze fundamental characteristics of LED luminaires. For this, a comparative analysis of uniformity ratio of illuminance and luminaires distribution of these two luminaires was made, and materials for applying LED luminaires to interior construction space were prepared. This study was carried out in four stages. First, a theoretical review on LED illumination light source was made compared with the existing luminaires. Second, a mock-up to control experimental variables to meet the objective of this study was manufactured. Third, uniformity ratio of illuminance and luminance distribution of each luminaire were measured by using the mock-up. Fourth, a comparative analysis of uniformity ratio of illuminance and characteristics of luminance distribution of the existing fluorescent luminaires and LED ones was made. As a result of the ,study the uniformity ratio of illuminance of LED luminaires 0.569, was higher than one of the existing fluorescent luminaires, 0.522. Namely, it was shown that illuninance distribution of LED luminaires was uniform and global diffuse was good. As a result of measuring luminance distribution, it was found that luminance distribution of LED luminaires was more uniform than one of the existing fluorescent luminaires. The maximum luminance of fluorescent luminaires and LED luminaires over the wall was 180.6[cd/㎡]and 155.26[cd/㎡] respectively. Namely the maximum luminance of fluorescent luminaires was higher than one of LED luminaires. The average luminance of fluorescent luminaires and LED luminaires was 44.32[cd/㎡] and 58.65[cd/㎡] Like this, the average luminance of LED luminaires was higher than one of fluorescent luminaires. Considering these results, it’s thought that LED luminaires can give a person in the room a more comfortable working environment than fluorescent luminaires.