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:
Aug. 07, 2018
Filed:
Mar. 09, 2016
Photoscience Japan Corporation, Hachioji-shi, Tokyo, JP;
Noboru Akiyama, Higashimurayama, JP;
Yuji Yamakoshi, Taito-ku, JP;
PHOTOSCIENCE JAPAN CORPORATION, Tokyo, JP;
Abstract
A light-shielding strip, for preventing a sealing member from deterioration due to ultraviolet rays, is made of a ultraviolet-shielding material having a resilient plate shape, and comprises: a main light-shielding portion having a length according to at least a circumferential length of an inner periphery of a lamp-protective tube; and first and second overlap portions extending from respective ones of both ends of the main light-shielding portion in a longitudinal direction with each forming a non-parallel convergence shape. The light-shielding strip, rolled in the longitudinal direction, is disposed in the lamp-protective tube to closely fit to the inner periphery of the lamp-protective tube and positioned to oppose to the sealing member. Repulsive force against bending force around an end portion of the light-shielding strip can be dispersed due to the non-parallel convergence shape of the overlap portions, so that a possible-raised portion around the end portion can be suppressed.