GB2460042A

GB2460042A - Light string comprising both light emitting diodes and incandescent bulbs

Info

Publication number: GB2460042A
Application number: GB0808647A
Authority: GB
Inventors: Chu-Cheng Chang; Cheng-Fen Chang; Chen-Hsien Chang; Chen-Tao Chang
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-13
Filing date: 2008-05-13
Publication date: 2009-11-18
Also published as: GB0808647D0

Abstract

A Christmas light string includes a plug; a first positive wire; a first negative wire together with the first positive wire and the plug forming a circuit; incandescent light bulbs connected together along the first positive wire and the first negative wire to form a first loop; a rectifier having a positive input connected to the first incandescent light bulb via a second positive wire and a negative input connected to the last incandescent light bulb via a second negative wire respectively; an end enlargement connected to the positive input of the rectifier via the second positive wire and the negative input of the rectifier via the second negative wire respectively; and LED bulbs forming a second loop between a positive output and a negative output of the rectifier. An optimum illumination is rendered by mixing cold light with warm light.

Description

CHRISTMAS LIGHT STRING WITH LED BULB LOOP AND INCANDESCENT LIGHT

BULB LOOP

BACKGROUND OF THE INVENTION

1. Field of Invention

The invention relates to Christmas lighting and more particularly to a Christmas light string with a plurality of LED bulbs arranged in a first loop and a plurality of incandescent light bulbs arranged in a second loop.

2. Description of Related Art

One conventional type of light string for illuminating a Christmas tree comprises a plurality of LED (Iight-emithng diode) bulbs electrically connected together. LED lamps have the advantages of long useful life, energy-efficient, and capable of resisting shock, However, light rays emitted by the LED bulbs are not warm. Hence, for example, snow may cover the LED bulbs for a relatively long time if the conventional light string is mounted on an outdoor Christmas tree.

The other conventional type of light string for illuminating a Christmas tree comprises a plurality of incandescent light bulbs electrically connected together.

Incandescent lamps are able to emit warm light rays to give people a feeling of warmness. However, they are gradually phased out worldwide due to great energy consumption.

There have been numerous suggestions in prior patents for Christmas light string.

For example. U.S. Pat. No. 6,344,716 discloses a Christmas light string.

Thus, it is desirable to provide a novel Christmas light string with LED bulb loop and incandescent light bulb loop in order to overcome the inadequacies of the prior art.

SUMMARY OF THE INVENTION

It is therefore one object of the invention to provide a Christmas Ught string with a plurality of LED bulbs arranged in a first loop and a plurality of incandescent light bulbs arranged in a second loop.

The above and other objects, features and advantages of the invention will become apparent from the following detailed description taken with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic illustration of a first preferred embodiment of Christmas light string according to the invention; and FIG. 2 is a schematic illustration or a second preferred embodiment of Christmas light string according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 1, a Christmas light string in accordance with a first preferred embodiment of the invention comprises a plug 1, a first positive wire 6 and a first negative wire 7 together with the electrically connected plug 1 forming an electrical circuit, a plurality of incandescent light bulbs 3 electrically connected together along the first positive wire 6 and the first negative wire 7 to form a first loop, a rectifier 4 having a positive input electrically connected to a first one 30 of the incandescent light bulbs 3 via a second positive wire 8 and a negative input electrically connected to a last one 31 of the incandescent light buibs 3 via a second negative wire 9, an end enlargement 2 eleu eally connected to the positive input of the rectifier 4 via the second positive wire 8 and the negative input of the rectifier 4 via the second negative wire 9 respectively, and a plurality of LED bulbs 5 forming a second loop between the positive output and the negative output of the rectifier 4.

Referring to FIG. 2, a Christmas tight string in accordance with a second preferred embodiment of the invention comprises a plug 1, an end enlargement 2, a first positive wire 6 and a first negative wire 7 together with the electrically connected plug I and the end enlargement 2 forming an electrical circuit, a rectifier 4 having a positive input electrically connected to the first positive wire 6 and a negative input electrically connected to the first negative wire 7, !urality of incandescent light bulbs 3 formig a first loop between first positive wire 6 and the second negative wire 7, and a plurality of LED bulbs 5 forming a second loop between the positive output and the negative output of the rectifier 4.

The invention can mix cold light rays emitted by the LED bulbs 5 with warm light rays emitted by the incandescent light bulbs 3 so as to render an optimum illumination to a Christmas tree, While the invention herein disclosed has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.