Title:
LIGHTING DEVICE AND LIGHTING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/143362
Kind Code:
A1
Abstract:
Provided is a lighting device which can be dimmed and subjected to change in color temperature of the color of emitted light in accordance with a dimming level. To the lighting device, alternating-current power that is phase-controlled is supplied. The lighting device is provided with a light-emitting-part array and a switching means. The light-emitting-part array is constituted of a plurality of light-emitting parts, which are two or more kinds of light-emitting parts having different colors of emitted light. The switching means switches an electrical connection relationship between the light-emitting parts included in the light-emitting-part array so as to change a ratio between the number of light-emitting parts inserted in series to an electrical power supply channel and the number of light-emitting parts included therein for each color of emitted light in accordance with a voltage supplied to the light-emitting-part array.
Inventors:
SETOMOTO TATSUMI
NAGAI HIDEO
UEMOTO TAKAARI
NAGAI HIDEO
UEMOTO TAKAARI
Application Number:
PCT/JP2010/003422
Publication Date:
December 16, 2010
Filing Date:
May 21, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
SETOMOTO TATSUMI
NAGAI HIDEO
UEMOTO TAKAARI
SETOMOTO TATSUMI
NAGAI HIDEO
UEMOTO TAKAARI
International Classes:
H05B44/00; H05B37/02
Foreign References:
| JP2006147933A | 2006-06-08 | |||
| JP2006236709A | 2006-09-07 | |||
| JP2008544569A | 2008-12-04 |
Other References:
See also references of EP 2442624A4
Attorney, Agent or Firm:
NAKAJIMA, Shiro et al. (JP)
Shiro Nakajima (JP)
Shiro Nakajima (JP)
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