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    ILLUMINATION DEVICE, WINDOW WITH ILLUMINATION FUNCTION, AND WINDOW BUILDING MATERIAL
    3.
    发明公开
    ILLUMINATION DEVICE, WINDOW WITH ILLUMINATION FUNCTION, AND WINDOW BUILDING MATERIAL 审中-公开

    公开(公告)号：EP3933257A1

    公开(公告)日：2022-01-05

    申请号：EP20763539.2

    申请日：2020-02-26

    申请人： MITSUBISHI ELECTRIC CORPORATION

    发明人： FUJII, Yusuke ,  OKAGAKI, Satoru

    IPC分类号： F21S11/00 ,  F21Y113/13 ,  F21Y115/10 ,  F21S2/00

    摘要： It is intended to enable switching between a lighting function and a window function, and provide both reproducibility of the sky in using the lighting function and visibility of an opposite space or translucency in using the window function.
    A lighting device (200) includes a first light source (10) to emit first light; a diffuser (20) to receive the first light and emits first scattered light; and a frame (300) to support the first light source and the diffuser, wherein the diffuser includes nanoparticles, and guides the received first light, scatters it with the nanoparticles, and emits it as the first scattered light; the diffuser includes an incident surface (f21) to receive the first light, a first surface (f22) on which an emission surface to emit the first scattered light is formed, and a second surface (f23) opposite the first surface; the incident surface is formed at a first edge portion of the diffuser, the frame is opened to expose at least a portion of a region on the first surface of the diffuser in which the emission surface is formed and a region on the second surface corresponding thereto; and a correlated color temperature of the first scattered light is higher than a correlated color temperature of the first light.