Title:
LIGHT GUIDE DUCT
Document Type and Number:
Japanese Patent JP2021158021
Kind Code:
A
Abstract:
To provide a light guide duct capable of emitting light taken in by lighting to indoors from a horizontal direction at low cost, without being restricted by a utilization space indoors.SOLUTION: A light guide duct 1 includes: a lighting window 20 for collecting natural light L1; a duct body 30 in which a light guide passage 31 is formed along the vertical direction which reflects the collected natural light and meanwhile, guides reflected reflection light L2; and a light emission panel 40 which is mounted on the duct body 30, which transmits the reflection light L2 guided in the light guide passage 31 and meanwhile, emits the transmitted reflection light L2 to indoors RI. The duct body 30 is formed as part of a wall 80 of the indoors RI across a plurality of different floors. The light emission panel 40 forms a wall surface 81 of the indoors RI of each floor.SELECTED DRAWING: Figure 2
Inventors:
ITO AYAKO
Application Number:
JP2020058801A
Publication Date:
October 07, 2021
Filing Date:
March 27, 2020
Export Citation:
Assignee:
DAIWA HOUSE IND
International Classes:
F21S11/00; E04F17/06; F21V8/00; F21V11/02
Attorney, Agent or Firm:
Hiraki International Patent Office