Patent ID: 8610870
Filing Date: 2013-12-17
Classification: G03B

Abstract:
1. An air-cooling apparatus which cools an imaging unit comprising a plurality of LCD panels and a polarizer assembly, the apparatus comprising: a cooling fan which expels air; and a cooling duct which directs air expelled from the cooling fan onto the plurality of LCD panels and the polarizer assembly; wherein the cooling duct comprises a plurality of channels corresponding to the plurality of LCD panels, and at least two channels from among the plurality of channels are bent vertically, wherein the plurality of LCD panels comprises red, green, and blue LCD panels and the polarizer assembly comprises red, green, and blue polarizers, wherein the cooling duct comprises a first channel which blows air onto the red LCD panel and a red polarizer; a second channel which blows air onto the green LCD panel and a green polarizer; and a third channel which blows air onto the blue LCD panel and a blue polarizer, wherein the first channel comprises a first air flow direction changing member, the second channel comprises a second air flow direction changing member, and the third channel comprises a third air flow direction changing member, and wherein the first, second, and third air flow direction changing members refract air flow from a horizontal direction to a vertical direction perpendicular to the horizontal direction, and the first and the third air flow direction changing members are installed higher in the vertical direction than the second air flow direction changing member.