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

Claim 0:
1. 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; and
a heat dissipating member that is a plate-like member, the heat dissipating member disposed so as to oppose one of the first principal surface and the second principal surface and rotated along with the substrate, wherein:
the heat dissipating member includes:
a projecting portion projecting from a center portion of the heat dissipating member toward the one of the first principal surface and the second principal surface, the projecting portion including a contact surface that makes contact with the one of the first principle surface and the second principle surface;
a plurality of fins formed by cutting and raising a plurality of regions in a peripheral region of the heat dissipating member excluding the center portion; 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 projecting portion makes contact with the substrate via the contact surface so as to secure a certain distance between the substrate and the heat dissipating member and conduct heat in the substrate to the peripheral region of 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.