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US 2022/0186888 A1Published application
Led lighting bulb and manufactring method
AssigneeSignify Holding B.V.
InventorsCHENGRUI YAN, RUI ZOU, MORNA SHEN
Life of this patent
Estimating the term…
Abstract
A LED lighting bulb (10) has a lighting driver (28) which is located within the bulb envelope (12). During assembly, the lighting driver (28) may be positioned away from an opening (14) of the envelope (12) so that high temperature sealing of a stem portion (22) of the end cap (16) to the envelope opening (12) can take place. The lighting driver (28) can then be pulled into position against the stem portion (22), and assembly of the end cap (16) can then be completed.
Claims15
A LED lighting bulb comprising:
- an envelope having an opening;
- an LED arrangement being enclosed in the envelope;
- an end cap at the opening comprising a first terminal, a second terminal and a stem portion which closes the opening;
- a first wire and a second wire extending from the stem portion into the envelope;
- a lighting driver at an envelope side of the stem portion, the lighting driver comprising a shape feature for allowing the lighting driver to slide relative to the first wire and the second wire during assembly, and the lighting driver being electrically connected to the first wire and the second wire;
- a first tube extending from the stem portion on an opposite side to the envelope;
- a second tube extending from the stem portion on an opposite side to the envelope;
- and
- a first supply wire which makes electrical connection between the first terminal and the lighting driver through the first tube and through the stem portion;
- and
- a second supply wire which makes electrical connection between the second terminal and the lighting driver through the second tube and through the stem portion.
8 more elements
A method of manufacturing a LED lighting bulb comprising:
- providing an envelope having an opening;
- providing a stem portion of an end cap, having a first wire and a second wire extending from the stem portion;
- mounting a lighting driver along the first wire and second wire, wherein the lighting driver comprises first and second supply wires which extend through the stem portion and each through a respective tube which extends back from the stem portion;
- providing an LED arrangement within the envelope;
- hermetically connecting the stem portion to the opening of the envelope with the lighting driver remote from the stem portion and within the envelope;
- pulling the lighting driver towards the stem portion along the first and second wires using the first and second supply wires;
- sealing the tubes around the first and second supply wires;
- assembling the end cap by connecting the first and second supply wires to first and second terminals of a terminal portion of the end cap and connecting the terminal portion to the stem portion.
5 more elements
Dependencies are inferred from the claim text.