The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Feb. 28, 2012
Seog Joon Kim, Cheonan-si, KR;
Mee Suk Rho, Seongnam-si, KR;
Taek Kyu Kim, Seongnam-si, KR;
Kazuhiro Kashiwagi, Hamamatsu, JP;
Isao Koike, Hamamatsu, JP;
Kunitoshi Shimizu, Hamamatsu, JP;
Akira Ikemoto, Hamamatsu, JP;
Seog Joon Kim, Cheonan-si, KR;
Mee Suk Rho, Seongnam-si, KR;
Taek Kyu Kim, Seongnam-si, KR;
Kazuhiro Kashiwagi, Hamamatsu, JP;
Isao Koike, Hamamatsu, JP;
Kunitoshi Shimizu, Hamamatsu, JP;
Akira Ikemoto, Hamamatsu, JP;
Techsign Light Panel Co., Ltd., Chungcheongnam-do, KR;
Kowa Company, Ltd., Nagoya-Shi, Aichi, JP;
Abstract
The present invention relates to an edge-type lighting device using an LED light source which has high light-emitting efficiency regardless of thermal expansion of a light guide plate. An LED light source () is disposed on an edge of a light guide plate () so as to be movable in the normal line direction (±n) of the edge () of the light guide plate. A slide member () is slidably disposed on the rear surface of the LED light source. A spring () is disposed in a frame member () on the rear surface of the slide member. Thus, the LED light source can always be pressed toward the edge of the light guide plate regardless of the thermal expansion of the light guide plate. Because the spring has a simple structure, the lighting device can be compact compared to the case where a coil spring is used.