Lighting fixture with reflector and template PCB
AssigneeIDEAL Industries Lighting LLC
InventorsNelson Man Hoi Lui, Felix Chi Hoi Mung, Gauss Ho Ching So, Alan Hoi Leung Ng
Life of this patent
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Abstract
The present invention relates to different embodiments of lighting fixtures, such as high bay lighting fixtures, comprising one or more improved features. Some of these features include the direct mounting of emitters on a heat sink and/or the use of a template-like board for providing an electrical connection between emitters. These features can improve heat dissipation from the emitters and simplify fabrication. In other embodiments, expensive lens optics of prior art SSL fixtures can be replaced with a flat lens and reflector in order to produce a fixture having a satisfactory spacing criterion.
Claims26
A lighting fixture, comprising:
- a heat sink comprising one or more mount pads formed as part of the heat sink;
- one or more emitters for emitting light, each of the one or more emitters comprising an emitter substrate that comprises a bottom side that is mounted on one of the one or more mount pads and an opposed top side, one or more top-side contacts on the top side of the emitter substrate;
- a circuit board interconnecting the one or more emitters, the circuit board comprising a bottom surface that faces the heat sink and an opposed top surface, the circuit board defining one or more cut-outs configured to receive the one or more emitters such that the one or more emitters at least partially protrude through the one or more cut-outs, the circuit board comprising an outer perimeter, wherein a portion of the circuit board is in direct contact with the heat sink and a major portion of the outer perimeter of the bottom surface of the circuit board is not in direct contact with the heat sink, wherein the bottom surface is electrically connected to the one or more top-side contacts;
- and
- a lens over the circuit board and the one or more emitters such that the light emitted from the one or more emitters passes through the lens as the light is emitted from the fixture.
A method of fabricating a lighting fixture, comprising:
- providing a heat sink;
- mounting one or more emitters on the heat sink, each of the one or more emitters comprising an emitter substrate that comprises a bottom side that is mounted on the heat sink and an opposed top side, one or more top-side contacts on the top side of the emitter substrate;
- and
- mounting a circuit board having one or more cut-outs on the heat sink such that each of the one or more emitters is at least partially within a respective one of the one or more cut-outs, the circuit board comprising a bottom surface that faces the heat sink, an opposed top surface and an outer perimeter, wherein a portion of the circuit board is in direct contact with the heat sink and a portion of the outer perimeter of the bottom surface of the circuit board is in direct contact with the heat sink, but most of the outer perimeter of the bottom surface of the circuit board is not in direct contact with the heat sink;
- positioning one or more sections of the circuit board over the one or more top-side contacts, the one or more sections each having a solder pad;
- soldering the solder pads to the one or more top-side contacts of the one or more emitters.
Dependencies are inferred from the claim text.