Gas cooled LED lamp

A lamp comprising:

• an enclosure being at least partially optically transmissive and a base defining a longitudinal axis of the lamp;
• an electronics board supporting electronic circuitry connected to a power supply for the lamp, the board extending substantially along the longitudinal axis of the lamp and extending into substantially the center of the enclosure;
• at least one LED disposed in the optically transmissive enclosure and mounted to the board and operable to emit light when energized through an electrical connection from the base;
• and
• the at least one LED mounted on a submount formed to have a three dimensional shape, the board supporting the submount such that the at least one LED is positioned substantially in the center of the enclosure and the board being electrically coupled to the at least one LED;
• and the submount dissipating heat from the at least one LED.

A lamp comprising:

• an enclosure being at least partially optically transmissive;
• a board supporting a power supply for the lamp located in the enclosure;
• at least one LED disposed in the optically transmissive enclosure and mounted to the board and operable to emit light when energized through an electrical connection;
• a gas contained in the enclosure to provide thermal coupling to the at least one LED;
• and
• the at least one LED mounted on a submount formed to have a three dimensional shape, wherein the submount comprises a flex circuit comprised of a thermally conductive material on a flexible dielectric material, the board being electrically coupled to the at least one LED and the submount being thermally coupled to the gas for dissipating heat from the at least one LED wherein the flex circuit is flooded with copper to provide enough heat conductive material that heat generated by the at least one LED is dissipated to the gas in the enclosure such that the performance of the at least one LED is not degraded.