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:
Nov. 22, 2011
Filed:
Feb. 03, 2010
Keisuke Igarashi, Kawasaki, JP;
Hiroyuki Uchida, Kawasaki, JP;
Naoto Yamashita, Kawasaki, JP;
Kazunori Katou, Kawasaki, JP;
Toshiyuki Itou, Kawasaki, JP;
Keisuke Igarashi, Kawasaki, JP;
Hiroyuki Uchida, Kawasaki, JP;
Naoto Yamashita, Kawasaki, JP;
Kazunori Katou, Kawasaki, JP;
Toshiyuki Itou, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An illuminating structure of a key operating unit for operating a key switch includes a housing unit to have a window portion formed correspondingly to the key switch, a circuit substrate to be provided inside the housing unit, to be disposed with the key switch, and to be provided with a light-guiding window portion, a keypad unit to include a key top portion inserted in the window portion of the housing unit, the keypad unit including a light-guiding portion at least in the key top portion, a light-emitting element to be arranged on a back surface side of the circuit substrate, and an illuminating plate to have a reflecting portion reflecting outgoing light of the light-emitting element to apply the reflected light from the reflecting portion to the keypad unit through the light-guiding window portion of the circuit substrate.