Stemless LED light bulb and fabrication method thereof

An LED light bulb (1), including:

• a power wire support set (11) including a first power wire (111), a second power wire (112) and at least one fixed block (113), wherein the fixed block (113) fixes the first and second power wires (111, 112) to form a power wire supporting structure;
• an LED filament (12) having two ends respectively soldered to a first end (E1) of the first power wire (111) and a first end (E1) of the second power wire (112), making the LED filament (12) supported by the power wire supporting structure;
• a glass envelope (13) including a head part (131) having a receiving space (1311) for receiving the LED filament (12) and the fixed block (113), and a tail part (132) tapered to clamp and fix only an outer side of each of the second ends (E2) of the first and second power wires (111, 112) in position;
• and
• a screw base (14) electrically connected to the second ends (E2) of the first and second power wires (111, 112),
• wherein the first power wire (111) includes a first portion and a second portion connected to the first portion to form an L-shaped structure,
• wherein the first portion is substantially perpendicular to and connected to the LED filament (12), and
• wherein the tail part (132) is directly inserted into the screw base (14), and each of the second ends (E2) of the first and second power wires (111, 112) is clamped by and further extends outside of the tail part (132) to be electrically connected to the screw base (14).