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Title:
DAYLIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2022082110
Kind Code:
A
Abstract:
To provide a daylighting device which reflects light entering from an opening effectively to light an internal space leading to the opening extensively and effectively.SOLUTION: A daylighting device includes: a first reflection board 10 which transmits some of light entering from an opening 105, reflects the other of the light, and has a bottomless cone shape; and a second reflection board 30 which receives, as incident light, reflection light of the first reflection board 10, reflects the incident light in a wider angle, and has a truncated cone shape in which a ceiling surface 31 and a bottom surface 32 are open. A front surface 14 serves as a reflection surface in the first reflection board 10, and a rear surface 34 serves as a reflection surface in the second reflection board 30.SELECTED DRAWING: Figure 4

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Inventors:
SHIGEMATSU KOICHI
Application Number:
JP2020193473A
Publication Date:
June 01, 2022
Filing Date:
November 20, 2020
Export Citation:
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Assignee:
CHUGOKU ELECTRIC POWER CO INC
International Classes:
F21S11/00; E02D29/12; E03F5/02; F21V7/04; F21V7/09; F21V7/10; F21V7/16; F21V7/18; F21V17/00
Attorney, Agent or Firm:
Hiroshi Tokuin



 
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