Title:
ILLUMINATING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/179687
Kind Code:
A1
Abstract:
According to an embodiment, this illuminating apparatus is provided with: a base material (2) having a front surface section (2a); a light source (6), which is provided on the front surface section of the base material, and which emits a visible beam; and a light transmitting cover (4), which covers at least the front surface of the light source, and which has a light transmitting region from which the light that has been emitted from the light source is emitted to the outside. The light source has directivity wherein the intensity of the light emitted from the light source becomes stronger in the normal line direction of the front surface section. The light transmitting cover has a front surface region (4a) facing the light source, a side surface region (4b) extending from the base material to the front surface region, and a diagonal region (4c) positioned between the front surface region and the side surface region. The sectional curvature of the diagonal region is larger than that of the front surface region and that of the side surface region, and in a cross section of the light transmitting cover, when the diameter of an end portion (4d) on the base material side of the side surface region is represented by W, and the horizontal distance between the diagonal region portion having the maximum curvature, and a base material-side end portion of the side surface region is represented by D, formula of 0.02≤D/W≤0.35 is satisfied, and the transmissivity of the light transmitting cover is 70% or less.
Inventors:
MORITA SHUSUKE (JP)
YOKOTA MASAHIRO (JP)
KAWAMURA NOBUO (JP)
OOKAWA TAKESHI (JP)
TAKAHASHI KEN (JP)
ONO OSAMU (JP)
OOTA HIDEO (JP)
MATSUDA HIDEMI (JP)
NISHIMURA TAKASHI (JP)
YOKOTA MASAHIRO (JP)
KAWAMURA NOBUO (JP)
OOKAWA TAKESHI (JP)
TAKAHASHI KEN (JP)
ONO OSAMU (JP)
OOTA HIDEO (JP)
MATSUDA HIDEMI (JP)
NISHIMURA TAKASHI (JP)
Application Number:
PCT/JP2013/052012
Publication Date:
December 05, 2013
Filing Date:
January 30, 2013
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
F21V3/02; F21S2/00; F21V3/00; F21V19/00; F21V23/00; F21V29/00; H01L33/00; H01L33/48; F21Y101/02
Foreign References:
| JP2009176925A | 2009-08-06 | |||
| JP2010205553A | 2010-09-16 | |||
| JP2008287994A | 2008-11-27 | |||
| JP2011138700A | 2011-07-14 |
Attorney, Agent or Firm:
S & S International PPC (JP)
Patent business corporation スズエ international patent firm (JP)
Patent business corporation スズエ international patent firm (JP)
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