Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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A Study on the Aging Change of Exit Light by Measuring the Ratio of Luminance

휘도비 측정을 통한 유도등의 경년변화 연구

  • 정종진 (한국소방산업기술원 소방기술연구소)
  • Received : 2019.11.01
  • Accepted : 2019.11.19
  • Published : 2019.12.31
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Abstract

In this study, Exit light installed in offices, malls, hospitals, and factories were analyzed to analyze the luminance performance of CCFL and LED light sources. In addition, fire protection products with electrical characteristics such as Exit light may change their performance due to ambient temperature, humidity, and dust. So it was extracted by installation place and analyzed its characteristics. As a result of the experiment, Exit light for CCFL type showed the value of 'ratio of luminance 2' for large, medium and small. Considering that the reference value was 'lower than 9', the value was very good and it can be seen that there is almost no change in ratio of luminance due to aging. The Exit light for LED type showed a value of 'ratio of luminance 5', which means that the light on the display surface is not uniform. In addition, there was almost no change in ratio of luminance due to ageing, but the ratio of luminance was larger than Exit light for LED type. This is an unsatisfactory result from a visual point of view. To improve this, it is necessary to disperse the light of LED light source and strengthen the regulation on ratio of luminance.

본 연구에서는 유도등의 광원과 경년변화에 따른 휘도성능을 분석하기 위하여 사무실, 상가, 병원, 공장 등에 설치된 유도등을 발취하여 CCFL, LED광원별 경년변화에 따른 휘도성능을 분석하였다. 이는 유도등과 같은 전기적 특성을 갖는 소방제품은 설치된 곳의 주위온도나 습도, 먼지 등이 그 성능에 변화를 줄 수 있기 때문에 설치장소별로 발취하여 그 특성을 분석하였다. 실험결과, CCFL유도등은 대형, 중형, 소형 모두 '휘도비 2'정도의 값을 나타내었다. 기술기준 규정값이 '휘도비 9이하'인 점을 감안할 때 매우 양호한 값을 나타냈으며, 경년변화에 의한 휘도비 변화도 거의 없음을 확인할 수 있었다. LED유도등은 '휘도비 5'정도의 값을 나타냈으며, 이는 표시면의 빛이 균일하지 못함을 뜻한다. 또한 경년변화에 의한 휘도비 변화는 거의 없으나, 휘도비의 값은 LED유도등보다 크게 나타났다. 이는 시각적인 측면에서는 만족스럽지 못한 결과이다. 이를 개선하기 위해서는 LED광원의 빛 분산이 필요하며 휘도비 관련 규정을 강화할 필요가 있다.

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References

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