Title:
ILLUMINATION DEVICE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/132350
Kind Code:
A1
Abstract:
Disclosed are an illumination device which is capable of local dimming drive and of efficiently dispersing heat generated by a semiconductor light-emitting diode, and a display device equipped with same. The illumination device comprises a semiconductor light-emitting diode (12a), a convex reflective surface (12d) which functions as a first reflective surface to reflect the light emitted by the semiconductor light-emitting diode (12a), and an inclined surface (11a) which functions as a second reflective surface to reflect the light reflected from the convex reflective surface (12d), and is equipped with a plurality of light-emitting diodes (10) provided with light-guiding plates (11) which guide the light reflected by the inclined surface (11a) to the interior. The semiconductor light-emitting diode (12a) emits light which has a greater vertical spread angle than horizontal spread angle. The convex surface (12d) is curved with respect to the light emitted by the semiconductor light-emitting diode (12a).
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Inventors:
YAMANAKA KAZUHIKO
Application Number:
PCT/JP2011/000403
Publication Date:
October 27, 2011
Filing Date:
January 26, 2011
Export Citation:
Assignee:
PANASONIC CORP (JP)
YAMANAKA KAZUHIKO
YAMANAKA KAZUHIKO
International Classes:
F21S2/00; F21V29/00; G02F1/13357; H01S5/022; F21Y101/02
Foreign References:
| JP2004111189A | 2004-04-08 | |||
| JP2008251483A | 2008-10-16 | |||
| JPH08306953A | 1996-11-22 | |||
| JP2007067076A | 2007-03-15 | |||
| JP2005135815A | 2005-05-26 |
Attorney, Agent or Firm:
NII, Hiromori (JP)
New house Extensive 守 (JP)
New house Extensive 守 (JP)
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Claims: