| 摘要 |
There is provided a projection system comprising a lamp irradiating a light, an illumination unit providing a plurality of lenses on the light paths, a composition unit providing an image by separating/composing the light, a projecting lens projecting the light composed in the composition unit to a screen, a cool air injection guide provided to one side of the composition unit for guiding an air injection port to be injected into the composition unit, an injection port guide interposed on a contact portion of the cool air injection guide and the composition unit, wherein the injection port is opened in the closed condition on the whole, and a fan formed on other side of the composition unit for transmitting a negative pressure to the side of the composition unit. Therefore, it is possible to improve the operation reliability of a projection system by smoothly guiding the flow of air injected from the projection system into the composition unit.
|
