Title:
LIGHTING APPARATUS, AND LIGHTING ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2013/136671
Kind Code:
A1
Abstract:
Provided is a lighting apparatus having a constant voltage circuit, wherein the remaining capacity of a battery pack can be signaled. An input voltage detection unit (22) and a control unit (23) measure the input voltage from a battery pack (12), and when the measured voltage drops to equal to or below a dimming onset voltage (V1), the control unit (23), a light adjustment control unit (31) and an output voltage switching unit (33) adjust the output voltage to a light source unit (25) so that the dimming of the light source unit (25) is initiated.
Inventors:
IWAMURA NORIHIRO
TSURUTA NAOKI
IKEDA MASAKI
TSURUTA NAOKI
IKEDA MASAKI
Application Number:
PCT/JP2013/000939
Publication Date:
September 19, 2013
Filing Date:
February 20, 2013
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H05B37/02; F21L4/00; F21V23/00
Foreign References:
| JP2004214519A | 2004-07-29 | |||
| JP2007287964A | 2007-11-01 | |||
| JPH0945101A | 1997-02-14 | |||
| JP2001325824A | 2001-11-22 | |||
| JP2008029156A | 2008-02-07 | |||
| JP2007287964A | 2007-11-01 |
Other References:
See also references of EP 2827684A4
Attorney, Agent or Firm:
ONDA, Hironori et al. (JP)
Hironori Onda (JP)
Hironori Onda (JP)
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