Title:
Daylighting device
Document Type and Number:
Japanese Patent JP6336320
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light collection device capable of guiding a sufficient amount of sunlight to the ceiling of a room, and further guiding light to the deep place of the room.SOLUTION: A light collection device introduces sunlight L1 into a building 1 through a window 11, and includes: a reflection plate 3 positioned and fixed along the width direction of the window 11 at the upper position of the window 11 of the building 1; and a light guide plate 4 arranged on the reflection surface of the upper surface of the reflection plate 3. The light guide plate 4 includes an uneven surface that is provided on at least one of the upper surface and lower surface thereof and diffuses incident sunlight L1 toward a direction of the window 11.
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Inventors:
Nakagawa Minoru
Application Number:
JP2014084883A
Publication Date:
June 06, 2018
Filing Date:
April 16, 2014
Export Citation:
Assignee:
Kyowa Co., Ltd.
International Classes:
F21S11/00; F21V5/00; F21V5/02; F21V7/00; F21V7/22; F21V8/00; F21V13/04
Domestic Patent References:
| JP2010186695A | ||||
| JP10012019A | ||||
| JP2000028956A |
Foreign References:
| WO2013093796A1 |
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office
Yumitsu Suzuki
Yukino Koishikawa
Yumitsu Suzuki
Yukino Koishikawa
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