Patent ID: 11966151
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC G

Claim 18:
19. A phosphor wheel comprising:
a substrate including a first principal surface and a second principal surface located opposite to each other;
a phosphor layer provided on the first principal surface;
a heat dissipating member that is a plate-like member, the heat dissipating member disposed so as to oppose the second principal surface and rotated along with the substrate; and
one or more clearance retaining members for securing a certain distance between the substrate and the heat dissipating member, wherein:
the heat dissipating member includes:
a plurality of fins formed by cutting and raising a plurality of regions in the plate-like member; and
through-holes that are formed by cutting and raising the plurality of regions and penetrate the heat dissipating member in a direction perpendicular to the substrate,

the plurality of fins are each cut and raised toward the second principal surface,
the one or more clearance retaining members each make contact with the substrate and the heat dissipating member so as to conduct heat in the substrate to the heat dissipating member,
the substrate further includes one or more substrate-side fins formed by cutting and raising a part of a region of the substrate where the phosphor layer is not provided,
the one or more substrate-side fins are each cut and raised toward one surface of the heat dissipating member, the one surface opposing the second principal surface, and
the one or more substrate-side fins and the one or more fins formed in the heat dissipating member are formed at positions that do not overlap each other, as viewed in a direction in which the substrate and the heat dissipating member overlap each other.