Title:
LIGHTING DEVICE, LIGHTING APPARATUS AND PROGRAM
Document Type and Number:
Japanese Patent JP2019032981
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 a larger received light volume. A control section 3 controls a light source 7 to light continuously regardless of the quantity of electricity, in a constraint lighting mode. When the quantity of electricity goes below a lighting threshold during operation in normal mode, the control section 3 performs brightness control for changing the brightness of the light source 7, after lighting an unlighted light source 7, and changes over from the normal mode to the constraint lighting mode when a determination is made that the change in the quantity of electricity follows up the brightness control, otherwise brings the light source 7 into a state lighting in specific brightness.SELECTED DRAWING: Figure 1
Inventors:
DOI KATSUYUKI
TAKIKITA HISAYA
UEDA DAISUKE
FUJIMOTO KOJI
TAKIKITA HISAYA
UEDA DAISUKE
FUJIMOTO KOJI
Application Number:
JP2017152732A
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