| US 7,513,661 B2 | ||
| Backlight unit and liquid crystal display device having the same | ||
| Tetsuya Hamada, Matsusaka (Japan); Toshihiro Suzuki, Hadano (Japan); and Masaru Ishiwa, Yokohama (Japan) | ||
| Assigned to Sharp Kabushiki Kaisha, Osaka (Japan) | ||
| Filed on Jan. 31, 2008, as Appl. No. 12/23,311. | ||
| Application 12/023311 is a division of application No. 11/562181, filed on Nov. 21, 2006. | ||
| Application 11/562181 is a continuation of application No. PCT/JP2005/005952, filed on Mar. 29, 2005. | ||
| Claims priority of application No. 2004-151963 (JP), filed on May 21, 2004; application No. 2004-322184 (JP), filed on Nov. 05, 2004; and application No. 2005-053978 (JP), filed on Feb. 28, 2005. | ||
| Prior Publication US 2008/0129927 A1, Jun. 05, 2008 | ||
| Int. Cl. F21V 29/00 (2006.01) | ||
| U.S. Cl. 362—373 [362/294; 362/632] | 49 Claims |
| 1. A backlight unit comprising:
a discrete light source section configured to have individual light sources having different spectra or different light emission
quantities;
a light guide section configured to have one end surface which is provided with an incident plane which receives a light emitted
from the discrete light source section, a light guiding area which guides the light having entered from the incident plane,
and a light emission plane which emits the light guided in the light guiding area;
a heat conduction section configured to conduct heat generated in the discrete light source section; and
a heat dissipation section disposed on a back side of the light emission plane and configured to dissipate heat conducted
through the heat conduction section; wherein
the heat conduction section has a substantially L-shaped heat conduction member which is bent along the light guide section
and is substantially L-shaped in cross section.
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