LED light bulb and fabrication method thereof
AssigneeDouble Good Co.
InventorSZU-MIN FAN
Life of this patent
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Abstract
An LED light bulb and a fabrication method thereof are provided. A plurality of power wires for supplying electricity to an LED filament are fixed to form a power wire supporting structure for supporting and fixing the LED filament in position, without using a stem of a conventional LED light bulb, thereby simplifying fabrication processes of the LED light bulb and reducing fabrication costs thereof. Moreover, the LED light bulb does not require an internal space for accommodating the stem, and thus its length can be effectively reduced to ideally become a small-size light bulb.
Claims8
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 make them 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 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).
A fabrication method of an LED light bulb (1), including the steps of:
- providing an LED filament (12) and a power wire support set (11), wherein the power wire support set (11) includes a first power wire (111), a second power wire (112) and at least one fixed block (113), and the fixed block (113) fixes the first and second power wires (111, 112) to make them form a power wire supporting structure;
- soldering two ends of the LED filament (12) to a first end (E1) of the first power wire (111) and a first end (E1) of the second power wire (112) respectively to form a semi-finished LED light bulb (15);
- providing a glass envelope (13), wherein the glass envelope (13) has a receiving space (1311) in a head part (131) thereof and a passage (1321) in a tail part (132) thereof, allowing the LED filament (12) and the fixed block (113) to pass through the passage (1321) to be received in the receiving space (1311);
- tapering the tail part (132) of the glass envelope (13) and sealing the passage (1321) to clamp second ends (E2) of the first and second power wires (111, 112);
- and
- providing a screw base (14), and electrically connecting the second ends (E2) of the first and second power wires (111, 112) respectively to the screw base (14), to form a finished LED light bulb (16).
Dependencies are inferred from the claim text.