LIGHTING DEVICE AND LIGHTING APPARATUS

LIGHTING DEVICE AND LIGHTING APPARATUS

PROBLEM TO BE SOLVED: To reduce a visual stress applied to a user and an electrical stress applied to lighting circuits that arise when a target value for brightness under lighting environment is set.SOLUTION: When a control part 5 simultaneously changes the light-control ratio of a first light sour...

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Hauptverfasser: MITSUJIMA KOICHI, MANNAMI HIROAKI, HIROWATARI YUICHIRO
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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creator MITSUJIMA KOICHI
MANNAMI HIROAKI
HIROWATARI YUICHIRO
description PROBLEM TO BE SOLVED: To reduce a visual stress applied to a user and an electrical stress applied to lighting circuits that arise when a target value for brightness under lighting environment is set.SOLUTION: When a control part 5 simultaneously changes the light-control ratio of a first light source 1 from 100% to 0% and the light-control ratio of a second light source 2 from 0% to 100%, the light color and brightness could suddenly change applying a visual stress to a user and an electric stress to lighting circuit parts 3, 4. On the other hand, in this embodiment, as the control part 5 gradually increases and decreases (fades in and fades out) the light-control ratios of the first light source 1 and the second light source 2, the visual stress applied to the user and the electrical stress applied to the lighting circuit parts 3, 4 that arise when a target value is set can be reduced.
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subjects ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
title LIGHTING DEVICE AND LIGHTING APPARATUS
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