LED LIGHT BULB WITH A PHOSPHOR STRUCTURE IN AN INDEX-MATCHED LIQUID

摘要

A liquid-filled LED bulb including a base and a shell connected to the base forming an enclosed volume. The liquid-filled LED bulb also includes a plurality of LEDs attached to the base and disposed within the enclosed volume. A thermally conductive liquid is held within the enclosed volume and has a first index of refraction. The LED bulb also includes a ring structure disposed within the enclosed volume and immersed in the thermally conductive liquid. The ring structure has a second index of refraction that matches the first index of refraction. A phosphor material is disposed on, or dispersed within, the ring structure. A first amount of the thermally conductive liquid is disposed between the LEDs and the ring structure and a second amount of the thermally conductive liquid is disposed between the ring structure and the shell.

主权项

1. A liquid-filled light-emitting diode (LED) bulb comprising:
a base; a shell connected to the base forming an enclosed volume; a plurality of LEDs attached to the base and disposed within the enclosed volume; a thermally conductive liquid held within the enclosed volume, the thermally conductive liquid having a first index of refraction; and a ring structure disposed within the enclosed volume and immersed in the thermally conductive liquid, wherein the ring structure has a second index of refraction, and wherein the second index of refraction matches the first index of refraction; and a phosphor material disposed on the ring structure,
wherein a first amount of the thermally conductive liquid is disposed between the LEDs and the ring structure and a second amount of the thermally conductive liquid is disposed between the ring structure and the shell.