Light emitting diode (LED) filament light bulb with secured antenna
A light emitting diode (LED) filament light bulb is disclosed. The LED filament light bulb includes a plurality of LED filaments, an RF driver, an antenna, and a cover. The antenna defines a first end portion and a second end portion, where the first end portion of the antenna is electrically connected and in signal communication with the RF driver. The cover defines an external wall and a support structure. The external wall defines an interior volume and the support structure defines an evacuation passageway and a cavity. The evacuation passageway and the antenna are both received within the cavity of the support structure and the evacuation passageway is fluidly connected to the interior volume of the cover.
1. A method of producing a LED filament light bulb, the method comprising:
fusing a plurality of LED filaments to a support structure that is defined by a wall that forms an internal cavity that is elongated along an axis of symmetry;
joining the support structure to a cover of the LED filament light bulb, wherein the support structure is fused to the cover by heating both parts together about an opening to the internal cavity;
joining an antenna to the support structure by heating the support structure and then pinching the internal wall to create an elongated raised portion encapsulating the antenna;
flushing or filling an interior volume defined by the cover with a non-reactive gas; and
heating and closing an end of an evacuation tube to create a gas-tight seal, wherein the evacuation tube is defined by the support structure and is fluidly connected to the interior volume.
2. The method of claim 1 , wherein a distal end portion of the antenna is embedded within the elongated raised portion encapsulating the antenna.
3. The method of claim 1 , wherein a distal end portion of the antenna extends through the wall and into the interior volume defined by the cover.
4. The method of claim 1 , further comprising attaching a base to the cover after heating and closing the end of the evacuation tube.
5. The method of claim 1 , wherein fusing the plurality of LED filaments to the support structure comprises heating the support structure and then pinching the internal wall to create elongated raised portions encapsulating elongated electrical conductors connected to the plurality of LED filaments.
6. The method of claim 5 , wherein fusing the plurality of LED filaments to the support structure further comprises fusing electrical conductors joining members of the plurality of LED filaments to a distal end of an elongated column portion projecting along the axis of symmetry from the wall.