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    • 4. 发明授权
    • Projection type display device
    • 投影式显示装置
    • US06966655B2
    • 2005-11-22
    • US10673729
    • 2003-09-29
    • Nobuyuki HaraKazuhisa HamadaNaoya MatsudaAkihito Yajima
    • Nobuyuki HaraKazuhisa HamadaNaoya MatsudaAkihito Yajima
    • G03B21/16G03B21/14G03B21/18
    • G03B21/16
    • A projection type display device, in which efficient cooling is performed in a remarkably silent manner, includes: a light source unit; an optical unit for modulating illumination light output from the light source unit based on input image information; two power source sections and; a box for housing the optical unit, the light source unit and the power source sections; and a cover member for entirely covering at least an upper surface of the box, wherein an outlet for externally exhausting air in the box by using axial fans is provided only on a bottom side of the box. Liquid crystal panels that are held by the optical unit frame absorb the illumination light from the light source unit and thus have different increased temperatures. Cooling air blown through an outlet of a sirocco fan that is directly connected to the optical unit frame is divided by a cooling air reservoir and a distribution sheet into predetermined air quantities in accordance with the temperatures of the liquid crystal panels so that the quantities of air obtained by the division are directly sent to the liquid crystal panels.
    • 以非常沉默的方式进行有效冷却的投影式显示装置包括:光源单元; 光学单元,用于基于输入图像信息调制从光源单元输出的照明光; 两个电源部分; 用于容纳光学单元的盒子,光源单元和电源部分; 以及用于完全覆盖所述箱体的至少上表面的盖部件,其中仅在所述箱体的底侧设置用于通过使用轴流风扇向外排出所述箱体中的空气的出口。 由光学单元框架保持的液晶面板吸收来自光源单元的照明光,因此具有不同的升高的温度。 通过直接连接到光学单元框架的西洛克风扇的出口吹送的冷却空气根据液晶面板的温度由冷却空气存储器和分配片材分成预定空气量,使得空气量 通过划分得到的液晶板直接送到液晶面板上。