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Title:
PHOSPHOR WHEEL AND PROJECTION-TYPE IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/123884
Kind Code:
A1
Abstract:
This phosphor wheel comprises: a disk-shaped substrate having a first main surface, a second main surface on the side opposite to the first main surface, and an opening; a curved phosphor layer provided along the circumferential direction of the substrate on the first main surface, the phosphor layer being arranged in the circumferential direction with the opening in a plan view; heat dissipating fins provided on the second main surface; and a protrusion which is provided on the second main surface and is different from the heat dissipating fins. The heat dissipating fins and the protrusion are formed integrally with the substrate.

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Inventors:
YAMAGISHI SHIGEKAZU
IKEDA TAKASHI
TANAKA MASATO
Application Number:
PCT/JP2021/036991
Publication Date:
June 16, 2022
Filing Date:
October 06, 2021
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G03B21/14; F21S2/00; F21V9/32; F21V9/38; F21V29/502; F21V29/77; H04N9/31; F21Y115/30
Foreign References:
JP2019032506A2019-02-28
CN210465979U2020-05-05
US20180136457A12018-05-17
JP2017173798A2017-09-28
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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