Lamp with LED array and thermal coupling medium

摘要

A lamp with an LED array is disclosed. The centralized nature of the LEDs allows the LEDs to be configured in a filament-like way using a supporting power structure, near the central portion of the optical envelope of the lamp. In example embodiments, the LEDs are cooled by a fluid medium to enable the LEDs to maintain appropriate mechanical stability and operating temperature. In some embodiments, the lamp operates at a power of at least 5 watts. Since the LED array can be centralized to form a filament-like structure, the light pattern from the lamp is not adversely affected by the presence of a heat sink or mechanical supporting parts. In some embodiments, phosphor is used provide wavelength conversion. The phosphor can be suspended within the optically transmissive fluid medium, placed remotely in the lamp structure, or applied to un-encapsulated LED die.

主权项

1. A lamp comprising:
an optically transmissive enclosure; an array of LEDs disposed in the enclosure on a wire frame assembly with substantially no additional mechanical support, the array of LEDs being operable to emit light when the wire frame assembly is energized; at least one, sealed inner envelope around the array of LEDs; a liquid and/or gel to provide thermal coupling to the array of LEDs, at least one portion of the liquid and/or gel confined to the at least one inner envelop and at least another portion of the liquid and/or gel between the at least one inner envelope and the optically transmissive enclosure; and a phosphor suspended in either the liquid and/or gel confined to the at least one inner envelope or the liquid and/or gel between the at least one inner envelope and the optically transmissive enclosure.