Title:
Lighting installation
Document Type and Number:
Japanese Patent JP6067246
Kind Code:
B2
Abstract:
According to one embodiment, a lighting device includes a light source with a directivity and a light-transmitting cover including a light-transmitting area configured to emit light from the light source to the outside. The light-transmitting cover is in a dome shape and formed of a material doped with scattered fillers dispersed in a volume thereof. The light-transmitting cover includes a vertically elongated shape with an aspect ratio higher than 0.6, and having a transmittance of 70% or less. The aspect ratio is the quotient of a height of the light-transmitting area in an optical axis thereof divided by the width of a rear-end portion of the light-transmitting area.
Inventors:
Morita Shusuke
Masahiro Yokota
Osamu Ono
Takeshi Okawa
Ken Takahashi
Nobuo Kawamura
Hideo Ota
Shuzo Matsuda
Takashi Nishimura
Masahiro Yokota
Osamu Ono
Takeshi Okawa
Ken Takahashi
Nobuo Kawamura
Hideo Ota
Shuzo Matsuda
Takashi Nishimura
Application Number:
JP2012123784A
Publication Date:
January 25, 2017
Filing Date:
May 30, 2012
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
F21S2/00; F21V3/04; H01L33/00
Domestic Patent References:
| JP2011090828A | ||||
| JP2010205553A | ||||
| JP2011100134A | ||||
| JP2010251258A | ||||
| JP2010086677A |
Attorney, Agent or Firm:
Suzue International Patent Office
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