Multifunctional led bulb

A multifunctional LED bulb, comprising a lamp base (1) and a light-transmitting bulb shell (2), wherein the tail of the light-transmitting bulb shell (2) is fixedly connected with the lamp base (1);

• wherein the LED bulb further comprises a driving power supply (3), electric lead wires (7), a stem (4), at least one LED light source and a support column (5);
• the driving power supply (3) is located in the lamp base (1), and the LED light sources and the support column (5) are wrapped in an inner cavity of the light-transmitting bulb shell (2);
• the light-transmitting bulb shell (2) is sealed by the lower portion of the stem (4), the stem (4) is of a hollow structure, an exhaust pipe (12) is arranged in the stem (4), and a hole (19) is formed in the joint of the upper end of the exhaust pipe (12) and the stem (4);
• the support column (5) is fixedly arranged on the stem (4), and the support column (5) and the stem (4) are formed integrally;
• the at least one LED light source is at least one LED light-emitting strip (6) fixed to the support column (5);
• electrode lead wires at the two ends of each LED light-emitting strip (6) are connected with the driving power supply (3) through the electric lead wires (7).