Title:
LIGHTING DEVICE AND EMERGENCY ILLUMINATING FIXTURE
Document Type and Number:
Japanese Patent JP2023157708
Kind Code:
A
Abstract:
To reduce the possibility that an overdischarge of a power storage part is generated.SOLUTION: A lighting device 1 comprises: a lighting circuit part 11 that lights a light source 2 by a power supplied from a power storage part B1; and a control part 14. The lighting circuit part 11 includes a transformer T1 and a switching element Q1. The power storage part B1 is connected with a series circuit of a primary coil N11 of the transformer T1 and the switching element Q1. The light source 2 is connected with a secondary coil N12 of the transformer T1. The control part 14 controls a switching operation of the switching element Q1. The lighting circuit part 11 transmits an energy at a primary side of the transformer T1 to a secondary side by the switching operation of the switching element Q1 to light the light source 2 connected with the secondary coil N12 of the transformer T1. The control part 14 turns off the switching element Q1 when a voltage value of the power storage part B1 becomes equal to or less than a threshold voltage.SELECTED DRAWING: Figure 3
Inventors:
LIU ZONGWEI
ISHIZUKA TETSUYA
YAMASHITA KOJI
ISHIZUKA TETSUYA
YAMASHITA KOJI
Application Number:
JP2022067784A
Publication Date:
October 26, 2023
Filing Date:
April 15, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
H05B45/50; H02M3/28; H05B45/382; H05B45/385
Attorney, Agent or Firm:
Hokuto Patent Attorneys Office
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