Design and Manufacture of an Energy-saving LED Lantern with Paper-cut Figure Projection Function

Tzer-Ming Jeng ； Sheng-Chung Tzeng ； Chi-Huang Liu ； Dong-Jhen Lin ； Bo-Jun Yang

《Smart Science》 2卷1期 (2014/03) Pp. 13-19

https://doi.org/10.6493/SmartSci.2014.168

並列摘要

This work designed and manufactured an energy-saving LED lantern adorned with a revolving circle of paper characters, showing the shadow-show function. It used the high-cooling performance LED lamp to light. A small motor was also installed in the lantern to rotate paper characters. Under the light of LED, the rotating paper characters in the lantern would play a shadow show. Many shadows of well-known characters ran on the skin surface of the lantern, being like to tell a story and having lots of fun. For example, ”The Magical Monkey King” is the classic Chinese adventure tale. It is one of the favorites in our growing collection of Asian children's books. One can think about that it will touch your mind and return you back to the childhood when such shadows of well-known characters run on the skin surface of the lantern. Besides, it used a special assembly of aluminum-alloy pin-fin heat sinks to be the cooling device of LED lamp within the lantern. The configuration of the cooling device was a vertical hollow square cylinder. Many circular pin fins extended inwardly from the internal surfaces of the vertical cylinder. The LEDs were installed onto the external surfaces of the vertical cylinder. Therefore, the chimney effect of the free convection heat transfer would be formed. A series of experimental tests demonstrated that such cooling design enhanced the total heat-transfer capacity remarkably.

並列關鍵字

Energy-saving LED lantern ； Shadow show ； Pin-fin heat sink ； Chimney effect

參考文獻

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