Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/193486
Kind Code:
A1
Abstract:
A lighting device is provided with a blue LED module which emits light including a blue light component, a light guide plate which diffuses and surface-emits light from the blue LED module, a white LED module which emits white light, a diffusion plate which is disposed in an orientation intersecting the light guide plate and diffuses the white light from the white LED module, and a light adjustment unit which replicates the color of the sky by adjusting the blue LED module and replicates sunlight by adjusting the white LED module. The light adjustment unit adjusts the white LED module or the blue LED module such that the ratio of the luminance of light emitted by the light guide plate and the luminance of light emitted from the light diffusion plate is 1:5.8-1:13.
Inventors:
KOMATSU TAKUMITSU (JP)
Application Number:
PCT/JP2021/011577
Publication Date:
September 30, 2021
Filing Date:
March 22, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELECTRIC LIGHTING CORP (JP)
MITSUBISHI ELECTRIC LIGHTING CORP (JP)
International Classes:
F21S8/02; F21S2/00; F21V13/12; H05B47/16; F21Y113/13; F21Y115/10
Domestic Patent References:
| WO2019220656A1 | 2019-11-21 | |||
| WO2016208683A1 | 2016-12-29 |
Foreign References:
| US20180259140A1 | 2018-09-13 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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