Title:
導光ダクト
Document Type and Number:
Japanese Patent JP7330840
Kind Code:
B2
Abstract:
To provide a light guide duct which radiates light with light quantity of light radiated in a room from a light guide duct more uniformly along a light guide direction of a duct body part, and which can reduce a local glare feeling.SOLUTION: A light guide duct 10 includes: a duct body part 11; reflection parts 12A-12E for reflecting light L in a state of being inclined with respect to a light guide direction in which the duct body part 11 extends; and a light radiation part 17 mounted on the duct body part 11, and radiating the light L reflected at the reflection parts 12A-12E into a room RI. The plurality of reflection parts 12A-12E is arranged along the light guide direction with an interval. At the reflection part 12E at the farthest end along the light guide direction from one end side of the duct body part 11, slits 15A-15D which serve as a transmission part where the light introduced in a light guide passage 11a transmits are formed at the plurality of reflection parts 12A-12D excluding the farthest end reflection part 12E so that the light L introduced along the light guide direction from the one end side reaches.SELECTED DRAWING: Figure 2
More Like This:
| JPS59226306 | GATHERING DEVICE OF SOLAR RAY |
| JP7435789 | Optical fiber and solar transmission system |
Inventors:
Shohei Asano
Application Number:
JP2019179632A
Publication Date:
August 22, 2023
Filing Date:
September 30, 2019
Export Citation:
Assignee:
Daiwa House Industry Co., Ltd.
International Classes:
F21S11/00; G02B6/00
Domestic Patent References:
| JP2009032654A | ||||
| JP2000149628A | ||||
| JP2009295355A | ||||
| JP59101217U | ||||
| JP2018133205A |
Foreign References:
| US9644808 |
Attorney, Agent or Firm:
Patent Attorney Corporation Hiraki International Patent Office
Previous Patent: Toner and two-component developer
Next Patent: Internal parts for container with applicator and container with applicator
Next Patent: Internal parts for container with applicator and container with applicator