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:
May. 07, 2013
Filed:
Mar. 04, 2010
Makoto Deguchi, Imabari, JP;
Osamu Shirakawa, Imabari, JP;
Masahiro Doi, Imabari, JP;
Kosuke Ueda, Imabari, JP;
Takuya Abe, Imabari, JP;
Makoto Deguchi, Imabari, JP;
Osamu Shirakawa, Imabari, JP;
Masahiro Doi, Imabari, JP;
Kosuke Ueda, Imabari, JP;
Takuya Abe, Imabari, JP;
Harison Toshiba Lighting Corporation, Imabari-shi, Ehime, JP;
Abstract
A mercury-free vehicle discharge lamp is described as including a discharge space with electrodes, wherein a spherical length b, which is a length in a tube axial direction of the light emitting part is 7.5 mm to 8.5 mm and a thickness volume V of the light emitting part is 50 mmto 100 mm, and wherein the following formula is satisfied: −20≦(a−35)×5.5+(x−13.5)×10 +(1.85−t)×100+(2.5−d)×100≦20, a: power W supplied in a stable lighting time, x: pressure [atm] of rare gas sealed in the discharge space ranging 10˜17 atm, t: thickness [mm] of a part where a wall with maximum thickness and ranging 1.30˜1.85 mm, and d: inner diameter [mm] of a part where the wall with maximum thickness.