LED照明時代已來臨

The Era of LED Lighting Has Come

黃秉鈞(Bin-Juine Huang)

《科儀新知》 155期 (2006/12) Pp. 6-10

https://doi.org/10.29662/IT.200612.0001

摘要

高亮度LED照明屬冷光，排熱量比傳統光源多出數倍，且接點溫度僅能設計在90℃左右，因此散熱是首要解決之問題。然而LED具光學指向性，能有效照射到目標，在LED半導體技術突飛猛進下，高亮度LED照明科技已首度證明可以超越傳統燈具，如水銀燈甚或高壓鈉燈。本文主要介紹國立台灣大學新能源中心的近期研發結果，最新LED照明燈具輸出光通量已達8,836 lm （150W輸入），燈具光輸出效率達63 lm/W，燈重8.5 kg，省電率超過50%，可能是全世界新記錄。如裝設在道路上，燈具高度10 m下，地面最大照度47 lx，平均照度18.5 lx，均勻度（平均值／最小值）3.2，符合國際道路照明規範(IESNA)。

並列摘要

LED is a cold light source with heat dissipation rate several times higher than traditional light sources. The requirement of operating junction temperature limit at ＜90℃ makes the heat dissipation become very difficult. However, the directness of LED lighting leads to a higher lighting efficiency to the target. The high-power LED lighting efficiency has been shown as the first time to be able to exceed the traditional lighting technology such as mercury or sodium lamps. The latest research results by New Energy Center of National Taiwan University has shown that a single LED fixture can illuminate 8,836 lumen at 150 W power input, with fixture efficacy 63 lm/W which may be the world record for high-power LED lighting. The fixture weighs 8.5 kg. At 10 m lamp height, the average luminous flux on road surface is 18.5 lx with max value 47 lx and uniformity 3.2, which meets the IESNA standard for roadway lighting.