• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.28 no.8
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• pp.32-39
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• 2014

In general, non-directional LED lamps including high transmittance cover are more advantageous than directional LED lamps, which are efficient enough to improve luminous efficacy and obtain certification, allowing wide manufacture, sale, and distribution. Although KS C 7651(Self-ballasted LED lamps-Safety and performance requirements) was revised in July 2013, however, many companies are having a lot of difficulties in keeping the certification and product development for the lack of the photometric analysis for non-directional LED lamps. In this paper, through the measurement of the angular distribution of luminous flux of incandescent lamp and non-directional LED lamps, we examined the reasonability of non-directional LED lamps' standards as suggested in KS C 7651. According to the results, even if non-directional LED lamps satisfy KS C 7651, when compared to an incandescent lamp, they showed less diffusive than the incandescent lamp and the distribution of the luminous flux depending on the angle fluctuated greatly even among LED lamps. Judging by the result, the current standard of the non-directional LED lamps, KS C 7651, has been comprehended that the angular distribution of the luminous flux needs to be presented after being much more thoroughly standardized.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.21-23
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• 2009

The paper is to evaluate for reliability of LED Modules for Lighting by ALTs(Accelerated Life Tests). The recently, some of KS were established by law of LED Modules for Lighting(KS C 7651, KS C 7652 and KS C 7653), but reliability assessment methods of LED Modules for Lighting were not established. Therefore, the paper aided companies to test methods for accelerated life testing by themselves.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.208-210
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• 2009

The paper is to evaluate for reliability of LED Channel Modules by ALTs(Accelerated Life Tests). The recently, some of KS were established by law of LED Lamps for Lighting(KS C 7651, KS C 7652 and KS C 7653), but reliability assessment methods of LED Channel Modules were not established. Therefore, the paper aided companies to test methods for accelerated life testing by themselves.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.10a
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• pp.77-79
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• 2009

The paper is to evaluate for reliability of 4W LED Lamp using internal converter by ALTs(Accelerated Life Tests). The recently, some of KS were established by law of LED Modules for Lighting(KS C 7651, 7652, 7653, 7655, 7656, 7657, 7658 and 7659), but reliability assessment methods of LED Lamps had not been established. Therefore, the paper aided companies to perform accelerated life testing(temperature 60 $^{\circ}C$, humidity 90 %) for themselves.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.201-203
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• 2009

본 논문에서는 LED(light emitting diode)를 사용한 일반 조명에서부터 자동차 조명에 대한 LED, CNT(carbon nano-tube), OLED조명의 융합기술 현황에 대하여 살펴보았다. 정부의 15/30보급정책의 일환인 LED조명 시범보급사업(부산 및 대전 지하철역사, 김대중 컨벤션센터, 대구 및 대전 우체국 등)과 한국산업규격(KS C 7651-3)의 제정 등으로 LED 응용 조명은 시장에서의 사용으로 기존 조명기기와의 경쟁력이 예상된다.