公开(公告)号：US10882223B2

公开(公告)日：2021-01-05

申请号：US16313164

申请日：2017-07-04

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Tomoko Ueki ,  Yusuke Tsuda ,  Tsuyoshi Kamada ,  Hideomi Yui ,  Shun Ueki ,  Masahiro Tsujimoto

IPC: B29C39/24 ,  B29C39/02 ,  B29C39/26 ,  E06B9/24 ,  F21S11/00 ,  F21V5/02 ,  F21V7/00 ,  E04C2/54 ,  E04C1/42 ,  E04D13/03 ,  B29K33/00 ,  B29L11/00

Abstract: A daylighting device according to an aspect of the invention includes at least a daylighting film that includes a base having optical transparency and daylighting portions having optical transparency and provided on one surface of the base. Each of the daylighting portions has a reflective surface by which light incident on the daylighting portion is reflected and the light reflected by the reflective surface and output from a second surface of the base has a characteristic that the light travels toward a space on a side where the light is incident on the reflective surface, the space being one of two spaces divided by a virtual plane as a boundary which is vertical to the second surface of the first substrate and parallel to a direction of the daylighting portion extending, and intervals s between adjacent daylighting portions are set to various values.