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

Claim 21:
22. 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,
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 one or more clearance retaining members are disposed along an outline having a predetermined radius from a center of the substrate, as viewed in a direction in which the substrate and the heat dissipating member overlap each other, and
a plurality of slits or a plurality of punch holes are formed in each of the one or more clearance retaining members, as viewed in a direction perpendicular to the direction in which the substrate and the heat dissipating member overlap each other.