Lamp with two light sources
First Claim
1. A lamp comprising a light-emitting filament and a light-emitting diode (LED), the LED being connected to receive its operating current through the filament.
1 Assignment
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Accused Products
Abstract
A lamp includes both a light-emitting filament and one or more light-emitting diodes (LEDs) on a lamp base. The LEDs may be electrically connected to the filament and receive their operating current through the filament so that the filament is the ballasting resistor for the LEDs. The filament may be in an incandescent or halogen lamp bulb and aligned along a longitudinal axis thereof, and the LEDs may be positioned on the lamp base symmetrically with respect to the longitudinal axis. The filament emits light of a first color temperature and at least one of the LEDs may emit light of a second color temperature higher than the first color temperature, where the symmetrical arrangement of the LEDs promotes a uniform color temperature of light from the lamp.
28 Citations
23 Claims
- 1. A lamp comprising a light-emitting filament and a light-emitting diode (LED), the LED being connected to receive its operating current through the filament.
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12. A lamp comprising:
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a lamp base and a reflector attached to said lamp base;
an incandescent or halogen lamp attached to said lamp base, said incandescent or halogen lamp comprising a light-emitting filament inside a bulb, said filament being aligned substantially along a longitudinal axis of said reflector; and
one or more light emitting diodes (LEDs) on said lamp base outside said bulb and positioned symmetrically with respect to said longitudinal axis, said LEDs being electrically connected to said filament and receiving an operating current for said LEDs through said filament so that said filament is a ballasting resistor for said LEDs. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A lamp comprising:
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a lamp base;
an incandescent or halogen lamp attached to said lamp base, said incandescent or halogen lamp comprising a light-emitting filament inside a bulb, said filament being aligned substantially along a longitudinal axis of said incandescent or halogen lamp; and
one or more light emitting diodes (LEDs) on said lamp base outside said bulb and that are positioned symmetrically with respect to said longitudinal axis. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification