Title:
Light
Document Type and Number:
Japanese Patent JP6256689
Kind Code:
B2
Abstract:
The invention provides a lighting device which can present a proper light space suitable for life scenes or satisfy the comfort requirements of users. The lighting device comprises a light source part and a control part. The light source part comprises a first light-emitting element, a second light-emitting element and a third light-emitting element. The first light-emitting element emits lamp bulb color light. The second light-emitting element emits green light. The third light-emitting element emits red light. The control part makes the first light formed by mixing the lamp bulb light, the red light and the green light and illustrated in certain color temperature conditions on the first chroma point when having a tolerance within +/-0.02 with a black-body radiation locus on an xy chromaticity diagram, changed into second light illustrated on the second chroma point in a zone surrounded by a spectrum locus on the xy chromaticity diagram with a y coordinate ranging from 0.32-0.45 and an x coordinate more than 0.51.
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Inventors:
Noguchi Ayako
Kenji Koike
Ide Nagisa
Kenji Koike
Ide Nagisa
Application Number:
JP2014030098A
Publication Date:
January 10, 2018
Filing Date:
February 19, 2014
Export Citation:
Assignee:
Toshiba Lighting & Technology Corporation
International Classes:
F21V9/40; F21S8/04; H05B37/02
Domestic Patent References:
| JP2013191513A | ||||
| JP2013058394A | ||||
| JP2013254702A |
Attorney, Agent or Firm:
Masahiko Hinataji
Junichi Kozaki
Hiroshi Ichikawa
Junichi Kozaki
Hiroshi Ichikawa
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