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Title:
PHOSPHOR WHEEL
Document Type and Number:
WIPO Patent Application WO/2022/163217
Kind Code:
A1
Abstract:
This phosphor wheel (1) comprises: a substrate (11) having a first main surface and a second main surface; a phosphor layer (12) provided to the first main surface; and a heat dissipating member (30B) which is disposed facing the first main surface or the second main surface, rotates together with the substrate (11), and is made of a plate material, wherein the heat dissipating member (30B) has a protruding portion (34B) that is provided in the center of the heat dissipating member (30B) so as to protrude toward any one surface, and that has a contact surface in contact with said any one surface and has a peripheral wall having the contact surface as a bottom surface, and a plurality of fins (31) formed by cutting and raising a plurality of regions (32) in a peripheral region excluding the center, the protruding portion (34B) has, in the peripheral wall (342), a plurality of through-holes (35B) formed to allow air to pass therethrough, and the protruding portion (34B) contacts the substrate (11) via the contact surface, thereby ensuring a fixed interval between the substrate (11) and the heat dissipating member (30B), and conducting heat from the substrate (11) to the peripheral region of the heat dissipating member (30B).

Inventors:
IIZAWA NOBORU
HONDA YOSUKE
Application Number:
PCT/JP2021/047247
Publication Date:
August 04, 2022
Filing Date:
December 21, 2021
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F21V29/502; F21V9/40; F21V29/74; F21V29/83
Domestic Patent References:
WO2017154048A12017-09-14
Foreign References:
JP2019061235A2019-04-18
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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