| 摘要 |
A display apparatus and its cooling method in which the optical assemblies can be prevented from being smudged by dust entered into the apparatus so that an excellent image can be obtained and the apparatus can be cooled sufficiently with the apparatus including a housing having a screen on its front surface and a closed structure, an optical block having a closed structure and coupled with the housing in a closed fashion allowing air to circulate between the housing and the optical block. Further, the display apparatus includes a light source, a first cooling device for cooling the light source and a second cooling device for cooling the optical block. At least the optical block is arranged to have a closed structure and is cooled by air circulation.
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