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. 12, 2025
Filed:
Dec. 01, 2020
Japan Lifeline Co., Ltd., Tokyo, JP;
National University Corporation Hokkaido University, Hokkaido, JP;
Yuki Kodama, Tokyo, JP;
Masaki Kuwatani, Hokkaido, JP;
Hajime Hirata, Hokkaido, JP;
Mikako Ogawa, Hokkaido, JP;
Kohei Nakajima, Hokkaido, JP;
JAPAN LIFELINE CO., LTD., Tokyo, JP;
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, Hokkaido, JP;
Abstract
A light irradiation device includes a tube including a tube main body and a light emitting portion, a plurality of wiring boards disposed inside the light emitting portion and including a plurality of light emitting elements disposed at an equal interval mounted, an anode lead wire for connecting an anode terminal of each of the wiring boards to a power source, and a cathode lead wire for connecting a cathode terminal of each of the wiring boards to the power source. In the light emitting portion, a central lumen and surrounding lumens that are arrayed at a 90° interval around the central lumen are formed. The wiring boards are disposed in the respective surrounding lumens with the light emitting elements arrayed along a longitudinal direction of the light emitting portion.