Title:
LIGHTING DEVICE, LIGHTING APPARATUS AND PROGRAM
Document Type and Number:
Japanese Patent JP2019032980
Kind Code:
A
Abstract:
To reduce the possibility of continuous flashing of a light source.SOLUTION: A photoelectric conversion part 2 generates a larger quantity of electricity for larger received light volume. A control section 3 controls a light source 7 to light continuously regardless of the quantity of electricity, in constraint lighting mode. When the quantity of electricity goes below a lighting threshold, during operation in normal mode, the control section 3 changes over from normal mode to determination mode, if the quantity of electricity goes above an unlighting threshold upon elapsing a specified time after lighting the unlighted light source 7. When the mode is changed over from normal mode to determination mode, the control section 3 performs brightness control for changing the brightness of the light source 7, and when a determination is made that the change in the quantity of electricity follows up the brightness control, changes over from determination mode to constraint lighting mode.SELECTED DRAWING: Figure 1
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Inventors:
DOI KATSUYUKI
TAKIKITA HISAYA
UEDA DAISUKE
FUJIMOTO KOJI
TAKIKITA HISAYA
UEDA DAISUKE
FUJIMOTO KOJI
Application Number:
JP2017152731A
Publication Date:
February 28, 2019
Filing Date:
August 07, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
H05B37/02
Attorney, Agent or Firm:
Patent business corporation Hokuto patent office