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:
Dec. 18, 2018
Filed:
Apr. 06, 2018
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Tsutomu Yoshikawa, Nara, JP;
Abstract
The phosphor wheel device includes a phosphor wheel, a circulation fan, a motor and a casing unit. The phosphor wheel is disc-shaped, and includes an annular phosphor layer formed on a first face and a plurality of openings disposed on an inner circumferential side. The circulation fan is mounted to a second face opposite to the first face, and blows air through the openings to the phosphor layer side. The motor drives and rotates the phosphor wheel and the circulation fan. The casing unit accommodates the phosphor wheel, the circulation fan, and the motor, and includes a circulation path formed for an airflow generated by the circulation fan to circulate. The casing unit includes an outer cylindrical portion and an inner cylindrical portion disposed substantially concentrically inside the outer cylindrical portion. Both ends of the outer cylindrical portion communicate with both ends of the inner cylindrical portion.