# US 8,541,937 B2 · Lamp for use in light strings

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- Number: US 8,541,937 B2
- Document ID: US8541937B2
- Status: Granted
- Kind: B2
- Application number: 13/110,906
- Filed: 2011-05-18
- Published: 2012-02-02
- Granted: 2013-09-24
- Earliest claimed: 2011-05-18
- Applicants: Bing Zhang
- Inventors: Bing Zhang
- Web page: https://patentgrep.com/patent/US8541937B2

## CPC

- F21V 19/0005: {of sources having contact pins, wires or blades, e.g. pinch sealed lamp (F21V19/001 takes precedence)}
- F21S 4/10: with light sources attached to loose electric cables, e.g. Christmas tree lights
- F21Y 2115/10: Light-emitting diodes [LED]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A lamp for use in light strings comprises an LED lamp, a lamp stem connected with the LED lamp and a lamp holder in which the lamp stem is arranged, wherein the lamp holder is internally provided with a conductive element electrically connected with wires, the LED lamp is connected with the conductive element through the lamp stem, the conductive element comprises a first conductive element and a second conductive element which are positioned at the left side and the right side in the lamp holder, the lower part of the lamp stem is provided with a protruded end which is clamped between the two conductive elements, the inner wall of the lamp holder is provided with an elastic element which can enable the two conductive elements to be contacted with and conductive with current when the lamp stem is pulled out.

## Claims

### Claim 1

A lamp for use in light strings comprises:
an LED lamp;
a lamp stem connected with the LED lamp; and
a lamp holder in which the lamp stem is arranged;
wherein the lamp holder is internally provided with a conductive element electrically connected with wires, the LED lamp is connected with the conductive element through the lamp stem, and the conductive element comprises a first conductive element and a second conductive element which are positioned at the left side and the right side in the lamp holder;
wherein the lower part of the lamp stem is provided with a protruded end, the protruded end is clamped between the two conductive elements, the two lamp bases of the LED lamp are respectively contacted with and conductive with the two conductive elements, and the inner wall of the lamp holder is provided with an elastic element which can enable the two conductive elements to be mutually contacted with and conductive with the current when the lamp is pulled out;
wherein the elastic element is positioned in the gap among the inner wall of the lamp holder and movable ends of the conductive ends.

### Claim 2 (depends on 1)

The lamp of claim 1, wherein one end of each conductive element is fixedly clamped in the lamp holder to respectively form fixed ends which are contacted with the two lamp bases of the LED lamp, the other ends of the two conductive elements are suspended movable ends which are connected with the wires.

### Claim 3 (depends on 2)

The lamp of claim 2, wherein the movable ends of the two conductive elements are fully enclosed or semi-enclosed on wires, and the side walls of the movable ends of the two conductive elements, which are mutually closed, are electric contacts which realize the contact and conduction.

### Claim 4 (depends on 3)

The lamp of claim 3, wherein a sheet metal I which can enable the electric contacts of the movable ends of the two conductive elements to conductive.

### Claim 5 (depends on 4)

The lamp of claim 4, wherein a clamping slot is arranged in the lamp holder, and the sheet metal I is directly clamped in the clamping slot.

### Claim 6 (depends on 5)

The lamp of claim 5, wherein the cross section of the sheet metal I is linear, or G-shaped or inverted U-shaped.

### Claim 7 (depends on 3)

The lamp of claim 3, wherein the lamp holder is internally provided with a sheet metal II which can enable the electric contacts of the movable ends of the conductive elements to be conductive, and the sheet metal II is respectively contacted with the front sides or the back sides of the first conductive element and the second element.