抄録
Many studies on a small-sized heat sink used for cooling of small electronic parts have been reported. However, there were few studies for a large-sized heat sink used for cooling of the backlight unit of liquid crystal display device. In this study, the tested heat sink was made of extruding aluminum, had fins length of 400mm, and was natural convection type heat sink. The experimental results and numerical analysis results on the distribution of base temperature were compared, as the results, following conclusions were obtained. (1)In the conventional large-sized heat sink with long fins, temperature difference on the base surface more than 4 K along fins occurred. (2)It was clarified that the base center temperature could be decreased from 62.8°C to 60.4°C by changing fin pitch along fin and the location of division of fins under keeping the temperature distribution on the base surface within 1K.
