Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/008262
Kind Code:
A1
Abstract:
A lighting device configured in such a manner that the excessive adjustment of the brightness is prevented even if there is external light. A mounting adaptor (63) is engaged with a ceiling engagement section (62) provided to a ceiling. A lighting device can be mounted to the ceiling by engaging the mounting adaptor (63) with any one of a first ring member (6) and a second ring member (60) which are affixed to a chassis (1). A sensor board (53) on which an illuminance sensor (52) is mounted is connected to a circuit board (5). The illuminance sensor (52) outputs an electric signal corresponding to the illuminance which the illuminance sensor (52) detects. A control unit adjusts, according to the illuminance detected by the illuminance sensor (52), the brightness of the light emitted from an LED module. The illuminance sensor (52) is affixed to the chassis (1) while being tilted relative to a pivot shaft about which the chassis (1) pivots.
Inventors:
HIRAOKA, Jun (())
平岡 淳 (())
UEDA, Ken (())
平岡 淳 (())
UEDA, Ken (())
Application Number:
JP2011/063775
Publication Date:
January 19, 2012
Filing Date:
June 16, 2011
Export Citation:
Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
HIRAOKA, Jun (())
平岡 淳 (())
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
HIRAOKA, Jun (())
平岡 淳 (())
International Classes:
F21V23/00; F21S2/00; F21S8/04; F21V3/02; F21V17/00; F21V29/00; H05B37/02; F21Y101/02
Attorney, Agent or Firm:
KOHNO, Takao (KOHNO PATENT OFFICE, 4-3 Tsuriganecho 2-chome, Chuo-ku, Osaka-sh, Osaka 35, 〒5400035, JP)
Claims:
Previous Patent: STRUCTURE FOR PACKAGING DISPOSABLE DIAPERS AND METHOD FOR PRODUCING AND FOLDING SAME
Next Patent: AUTOMATIC BREAD MAKER
Next Patent: AUTOMATIC BREAD MAKER