Patent ID: 11879629
Assignee: RAB LIGHTING INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 18:
19. A light fixture, comprising:
a heat dissipation structure defining:
a first housing member defining first and second sides; and
a plurality of concentric fin sets extending from the first side of the first housing member, first and second sets of an adjacent concentric pair of the plurality of concentric fin sets defining a first open channel therebetween;

a circuit board thermally coupled to and adjoining the second side of the first housing member;
a plurality of light emitters coupled to a first region of the circuit board overlying the first set of the plurality of concentric fin sets; and
a driver circuit thermally coupled and mounted to a second region of the circuit board overlying the second set of the plurality of concentric fin sets; and
wherein a first portion of the first housing member overlying the first open channel defines a minimum thickness of the first housing member between the first side and the second side, thereby minimizing thermal transmission across the first portion of the first housing member.