Title:
WINDOW LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2023130531
Kind Code:
A
Abstract:
To provide a window lighting device capable of saving power by using sunlight.SOLUTION: A window lighting device of the present invention has a light source, a light guide unit, and a power source that supplies power to the light source. The light guide unit has a light guide plate that guides light emitted from the light source, and a photovoltaic power generation unit that receives sunlight and generates power. The light guide plate has: a light incident end surface that faces the light source, and into which light emitted from the light source is made incident; and a light emission unit included in a predetermined main surface of the light guide plate that intersects with the light incident end surface, and from which light guided within the light guide plate is emitted. The photovoltaic power generation unit is provided on a main surface opposite to the predetermined main surface of the light guide plate, and supplies generated power to the power source.SELECTED DRAWING: Figure 1
Inventors:
WENG YUFENG
NAKAMURA TSUNEZO
YOSHIKAWA TAKAHIRO
NAKAMURA TSUNEZO
YOSHIKAWA TAKAHIRO
Application Number:
JP2020127347A
Publication Date:
September 21, 2023
Filing Date:
July 28, 2020
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
F21S2/00; F21S9/03; F21S11/00; F21S19/00
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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