Patent ID: 8536807

Claim:
An LED bulb comprising: a lamp cap ( 1 ), a lampshade ( 2 ), a plurality of LEDS ( 3 ) and a circuit board ( 4 ), characterized in that a bottom end of the lampshade ( 2 ) is mounted and fixed at a top end of the lamp cap ( 1 ); the circuit board ( 4 ) is mounted and fixed in the lampshade ( 2 ) and also electrically connected with the lamp cap ( 1 ); and the lampshade ( 2 ) is filled with a mixed gas which transfers heat produced by the LEDS ( 3 ) to outside of the bulb, wherein the mixed gas comprises nitrogen and argon, wherein the portion of nitrogen is 30%-90% of the total volume of the mixed gas and the portion of argon is 10%-70% of the total volume of the mixed gas.