Appliance convenience light
A lighting apparatus includes multiple point light sources housed in a reflector housing. The reflector housing diffuses the light produced by the point light sources to emulate a linear light source. Power supplies are provided to energize the light sources, to control heat generation and energy usage, and to provide thermal protection.
1. A lighting apparatus, comprising:
a reflector housing comprising an elongated channel having a first side wall, a second side wall, a first end, a second end, a rear portion, and an open front portion, said reflector housing defining at least one cavity;
a plurality of light emitting point sources connected to at least one of said first side wall and said second side wall proximate said open front portion of said reflector housing wherein at least one of said light emitting point sources is located at a predetermined location along the length of said reflector housing between said first end and said second end; and
a power supply electrically coupled to said light emitting point sources;
wherein said plurality of light emitting point sources is oriented such that the light emanating directly from said plurality of light emitting point sources is substantially directed toward one or more of said first side wall, said second side wall, and said rear portion of said cavity and not substantially toward said open front portion of said cavity.
2. The apparatus of claim 1 wherein said reflector housing defines a plurality of cavities.
3. The apparatus of claim 2 wherein at least one of said light emitting point sources is operably associated with each of said cavities.
4. The apparatus of claim 1 wherein said reflector housing defines a channel having a substantially parabolic cross section.
5. The apparatus of claim 1 wherein each of said plurality of light emitting point sources comprises a solid state light source.
6. The apparatus of claim 5 wherein each of said solid state light sources comprises a light emitting diode.
7. The apparatus of claim 1 wherein said plurality of light emitting point sources is arranged as a column of light sources.
8. The apparatus of claim 7 wherein said light emitting point sources are electrically coupled in series.
9. The apparatus of claim 1 wherein said plurality of light emitting point sources is arranged as an array of rows and columns of light sources.
10. The apparatus of claim 1 wherein a rectifier is electrically coupled in series with said plurality of light emitting point sources.
11. The apparatus of claim 10 wherein said rectifier comprises a diode.
12. The apparatus of claim 11 wherein said power supply further comprises a thermal protection device.
13. The apparatus of claim 12 wherein said light emitting point sources are arranged such that each of said light emitting point sources is energized during alternating half-cycles of alternating current power supplied to said apparatus.
14. The apparatus of claim 13 wherein said light emitting point sources are arranged such that one of a pair of adjacent light emitting point sources is energized during alternating half-cycles of alternating current power supplied to said apparatus and the other of said pair of adjacent light emitting point sources is not energized during said half-cycles of alternating current power supplied to said apparatus.
15. The apparatus of claim 13 wherein said thermal protection device is a thermal switch.
16. The apparatus of claim 1 wherein said power supply comprises at least one resistor electrically coupled with a transient voltage suppressor.
17. The apparatus of claim 1 wherein said light emitting point sources are arranged such that each of said light emitting point sources is energized during alternating half-cycles of alternating current power supplied to said apparatus.
18. The apparatus of claim 17 wherein said light emitting point sources are arranged such that one of a pair of adjacent light emitting point sources is energized during alternating half-cycles of alternating current power supplied to said apparatus and the other of said pair of adjacent light emitting point sources is not energized during said half-cycles of alternating current power supplied to said apparatus.
19. The apparatus of claim 1 wherein said apparatus comprises a portion of an appliance.
20. The apparatus of claim 1 wherein at least a portion of said plurality of light emitting point sources is attached to a first light source board, said first light source board connected to one of said first side wall and said second side wall.
21. The apparatus of claim 20 wherein at least a portion of said plurality of light emitting point sources is attached to a second light source board, said second light source board connected to the other of said first side wall and said second side wall.
22. The apparatus of claim 1 wherein said plurality of light emitting point sources is connected to said reflector housing such that said each of said plurality of light emitting point sources is offset from the center line of said channel.