US 7,600,910 B2
Illumination device, liquid crystal device, and electronic apparatus
Toyohiro Sakai, Azumino (Japan)
Assigned to Epson Imaging Devices Corporation, (Japan)
Filed on Apr. 20, 2007, as Appl. No. 11/738,072.
Claims priority of application No. 2006-155781 (JP), filed on Jun. 05, 2006; and application No. 2007-023802 (JP), filed on Feb. 02, 2007.
Prior Publication US 2007/0279944 A1, Dec. 06, 2007
Int. Cl. F21V 7/04 (2006.01)
U.S. Cl. 362—634  [362/612; 362/613; 362/633] 13 Claims
OG exemplary drawing
 
1. An illumination device comprising: light sources; a light source substrate on which the light sources are mounted; a light guide panel having opposite major surfaces and a side face connecting said major surfaces, said side face defining a light entrance plane facing the light sources, one of said major surfaces defining a light exiting plane from which light emitted by the light sources and entering the light guide panel via the light entrance plane exits the light guide panel; and
spacers interposed between the side face of the light guide panel and the light source substrate, wherein a gap is formed between the light sources and the side face of the light guide panel by the spacers; and a holding frame having a first side wall portion holding the light source substrate and a second side wall portion holding the light guide panel, wherein the light guide panel is positioned and held by being resiliently urged arranged by the spacers toward a third side wall portion of the holding frame that is opposite to the first side wall portion.