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:
Sep. 18, 2007
Filed:
Dec. 12, 2003
Masato Obata, Niigata, JP;
Naoji Shoji, Niigata, JP;
Masato Obata, Niigata, JP;
Naoji Shoji, Niigata, JP;
Nippon Seiki Co., Ltd., Niigata, JP;
Abstract
An indicator lighting device in which light introduction efficiency into a indication portion can be improved, brightness is good and unevenness in lighting is small is provided; wherein an indicatorwhich has a translucent indication member (indication portion)and a light introduction member (light introduction portion)and is operated around an axis by a drive shaftof a drive unitlight sources L which are disposed around the drive shaftand illuminate the indication memberthrough the light introduction memberare provided, and the light introduction memberhas a light receiving surfacefor receiving light from the light sources L, a first reflective surfacefor focusing light introduced from the light receiving surfaceto a position of a rotation axis Vof the drive shafta second reflective surfacewhich is formed between the first reflective surfaceand the rotation axis and reflects light from the first reflective surfacein a direction along the rotation axis V, and a third reflective surfacewhich is formed on the rotation axis Vin a way of facing the second reflective surfaceand reflects light from the second reflective surfacein a longitudinal direction of the indication member