Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2021142778
Kind Code:
A
Abstract:
To provide a lighting device capable of adjusting a spectral distribution of illumination light and being adjustable to light of various colors having a continuous spectral distribution.SOLUTION: A luminaire includes a first fluorescent-body containing LED device, a second fluorescent body-containing LED device, and an electric power control unit for controlling electric power supplied to each of the first fluorescent body-containing LED device and the second fluorescent body-containing LED device. The first fluorescent body-containing LED device includes one kind of an LED element selected from a blue LED element or a near ultraviolet LED element and a first fluorescent body, and the second fluorescent body-containing LED device includes an LED element and a second fluorescent body. The second fluorescent body-containing LED device and the first fluorescent body-containing LED device have fluorescence peak wavelengths contained in the distribution of their respective light emissions being separated by 10nm or more from each other, with a half value width of the fluorescence peak wavelength being 50 nm or more.SELECTED DRAWING: Figure 3
Inventors:
SATO FUMIYASU
KAWAGUCHI TAKESHI
WATANUKI KEIICHI
KAWAGUCHI TAKESHI
WATANUKI KEIICHI
Application Number:
JP2020040849A
Publication Date:
September 24, 2021
Filing Date:
March 10, 2020
Export Citation:
Assignee:
ASAHI RUBBER INC
UNIV SAITAMA
UNIV SAITAMA
International Classes:
B60Q3/80; B60Q3/60; B60Q3/74; F21S43/14; F21V9/32; F21V23/00; G02B5/20; H01L33/00; H05B47/10
Attorney, Agent or Firm:
Masaru Egawa
Michiko Furukawa
Michiko Furukawa