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차광판 표면 처리 방법에 따른 전사광 변화에 관한 연구
구진회(Jinhoi Gu),권명희(Myunghee Kwon),이윤경(Yoon-Gyeong Lee) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.12
Since the “Light Pollution Prevention Act” was executed, the installation of the light cutoff panel to the security lightings which caused light trespass has been increased in the local government. The light cutoff panel is effective in reducing the light trespass in term of the cost-benefit. Because the installation of the light cutoff panel is inexpensive than the change of the security lighting. But the reflected light from the surface of the light cutoff panel has been regarded as another light pollution problem to solve. Therefore, we try to improve light cutoff panel by changing the light reflectivity characteristic of the surface of the light cutoff panel. First, we laminated the surface of light cutoff panel by black powder to reduce the light reflectivity of the light cutoff panel. After the black powder lamination, the light reflectivity on the light cutoff panel improved from 85% to 5%. And we compared reflected light caused by black powder laminated light cutoff panel with the one of no surface treatment cutoff panel. The vertical illuminance was measured at 3, 6, 9m in front of the security lighting and 3, 6, 9, 12, 15, 18m in back of the security lighting to evaluate the reflected light. And the measurement height was determined of 1.5m considering the height of the 1th floor of an apartment house. In this study, we found that the reflected light from the light cutoff panel can be reduced about 90% by the black powder lamination method. The results derived from this study will be helpful to develope the various kind of light cutoff panel which minimize the adverse effect like reflected light of light cutoff panel.
조명시뮬레이션 프로그램(RELUX)을 이용한 도로조명의 공간적 배치에 따른 침입광 영향 특성 연구
구진회(Jinhoi Gu),정종환(Jong-Hwan Jung),이규목(Kyumok Lee) 한국조명·전기설비학회 2012 조명·전기설비학회논문지 Vol.26 No.11
The road lightings have made our living environment safe and active, since it was first installed in 1900 in Korea. As the industry developed, various kind of road lightings have been installed in an outdoor area. But the spilt light from the road lightings have caused health problem like the sleeplessness, the depression, the failure to thrive and the nearsightedness to children. The light trespass caused by road lightings vary with the height of road lightings, the distance from road lightings to the window and the BUG rating of road lightings. In this paper, we analyze the effect on the light trespass by the spatial installation position of road lightings using by RELUX program. And we derive the characteristics of the light trespass according to the spatial installation position of the road lightings in residential area near road.