IP Library › Granted Patent US 7,282,846
Granted Patent B2
US 7,282,846 · App. 11/196,308 · Granted Oct 16, 2007

Christmas bulb structure

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Quick Facts
Patent No.
US 7,282,846
App. No.
11/196,308
Granted
Oct 16, 2007
Kind
B2
Abstract

The present invention discloses an improved Christmas bulb structure, which comprises: a bulb shell; two conductive wire, extending from the interior of the bulb shell to the exterior of the bulb shell; an insulator, separating those two conductive wires; an elastic platelet, installed between those two conductive wires; a tungsten filament, with its two ends separately connecting the elastic platelet and one of those two conductive wires; and a transverse conductive wire, installed inside the insulator and between those two conductive wires; when the Christmas bulb structure is electrically powered, the other conductive wire will contact the elastic platelet, and the tungsten filament will be lit on. The present invention is characterized in that the transverse conductive wire enables the Christmas bulb structure to possess two current paths; thereby, the present invention can obtain a diversified lighting effect, and the cost can be lowered.

Claims (11)

1. An improved Christmas bulb structure, comprising:

a bulb shell;

two conductive wires extending from the interior of said bulb shell to the exterior of said bulb shell;

an insulator disposed within said bulb shell, separating said two conductive wires;

an elastic platelet protruding from said insulator between said two conductive wires;

a tungsten filament connecting said elastic platelet and one of said conductive wires; and

a transverse conductive wire installed inside said insulator within said bulb shell and electrically coupling said two conductive wires,

wherein when said bulb structure is electrically powered, the other conductive wire will be contacted by said elastic platelet and said tungsten filament will be energized, said elastic platelet bending to be spaced from the other conductive wire and de-energize said tungsten filament responsive to heating from said tungsten filament, whereby said transverse conductive wire enables said Christmas bulb structure to possess two current paths.

2. The improved Christmas bulb structure according to claim 1 , wherein the material of said transverse conductive wire is the same as that of said two conductive wires.

3. The improved Christmas bulb structure according to claim 1 or claim 2 , wherein the material of said transverse conductive wire or said two conductive wires is a magnesium-plated wire.

4. The improved Christmas bulb structure according to claim 1 , wherein said bulb shell is made of a glass or a plastic material.

Continuity (1)
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