| Summary: | 碩士 === 逢甲大學 === 機械與電腦輔助工程學系 === 102 === Single high efficiency LED street light, because its superiority and so on energy conservation, environmental protection, life long, easy distribution of light to become the future outdoors illumination the host antiquing source.But the single high efficiency LED chip quantity of heat fast derives with difficulty, causes its P-N junction temperature to rise suddenly, thus causes the luminous efficiency to reduce, the reliable variations, loss of life and so on.Therefore, radiates the question is a key which at present must solve .
This research carries on the simulation analysis using heat flow analysis software Fluent to discuss the LED street light the Lamp shade vents, changes its Lamp shade vents and the air outlet position and quantity four group of parameter combination under the fixed heat source to the street light interior temperature distribution influence situation, finally and does the experiment to the Lamp shade vents size to analyze.
The findings showed that, the Lamp shade vents the import to export the position nearer radiation effect to be worse, However leaves the central air outlet position farther radiation effect to be worse . Finally joins in the import and export quantity situation to know the import number are more to the lamp in the overall temperature has drops obviously, in the optimization import and export combination which obtains with exportation quantity matching is the I1234/θ12 position .
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