Patent attributes
A gas cooled LED lamp and submount is disclosed. The centralized nature of the LEDs allows the LEDs to be configured near the central portion of the optical envelope of the lamp. In some embodiments, the LEDs can be mounted on or fixed to a light transmissive submount. In some embodiments, LEDs can be disposed on both sides of a two-sided submount, or on thee or more sides if the submount structure includes three or more mounting surfaces. In example embodiments, the LEDs can be cooled and/or cushioned by a gas in thermal communication with the LED array to enable the LEDs to maintain an appropriate operating temperature for efficient operation and long life. In some embodiments, the gas is at a pressure of from about 0.5 to about 10 atmospheres and has a thermal conductivity of at least about 60 mW/m-K.
