# US 8,783,918 B2 · Easily maintainable lamp connection device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,783,918 B2
- Document ID: US8783918B2
- Status: Granted
- Kind: B2
- Application number: 13/395,644
- Filed: 2011-02-24
- Published: 2012-08-30
- Granted: 2014-07-22
- Earliest claimed: 2011-02-24
- Assignees: Dongguan Amc Lighting Co., Ltd.; WAC Lighting Co.
- Applicants: Youneng Mao
- Inventors: Youneng Mao
- Web page: https://patentgrep.com/patent/US8783918B2

## CPC

- F21V 17/107: {using hinge joints}
- F21V 1/08: adjustable
- F21V 17/06: the fastening being onto or by the lampholder
- F21V 21/00: Supporting, suspending, or attaching arrangements for lighting devices (F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00); Hand grips
- F21V 21/22: telescopic
- F21V 21/30: Pivoted housings or frames
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

The present invention relates to an easily-maintainable lamp connection device. The device comprises a lamp body, a front head arranged at an opening end of the lamp body, and a moveable link rod provided between the lamp body and the front head, which is able to slide freely; a stationary ring positioned firmly at the opening end of the lamp body with a gap between said stationary ring and an inside wall of the lamp body; a rod body of the moveable link rod is arranged with going through said gap, after assembling, an upper end of the moveable link rod located inside of the lamp body has a stopper whose size is bigger than that of said gap, and a lower end of the moveable link rod located inside of the front head is hinge jointed with a hinge mechanism inside of the front head.

## Claims

### Claim 1

An easily-maintainable lamp connection device comprises a lamp body, a front head arranged at an opening end of the lamp body, and a moveable link rod provided between the lamp body and the front head, which is able to slide freely; a stationary ring positioned firmly at the opening end of the lamp body with a gap between said stationary ring and an inside wall of the lamp body; a rod body of the moveable link rod is arranged with going through said gap, after assembling, an upper end of the moveable link rod located inside of the lamp body has a stopper whose size is bigger than that of said gap, and a lower end of the moveable link rod located inside of the front head is hinge jointed with a hinge mechanism inside of the front head.

### Claim 2 (depends on 1)

The easily-maintainable lamp connection device of claim 1, characterized in that said front head is lockable arranged at the opening end of said lamp body by using a slot locking structure.

### Claim 3 (depends on 1)

The easily-maintainable lamp connection device of claim 1, characterized in that said stationary ring is fixed firmly on a plurality of studs formed inside of said lamp body by using screws.

### Claim 4 (depends on 1)

The easily-maintainable lamp connection device of claim 1, characterized in that said hinge mechanism includes an axle and a fixed plate fixed firmly at an inside wall of the front head by using screws, a connecting end of the fixed plate wraps around the axle and forms a hinge structure; said lower end of the moveable link rod wraps around the axle and forms a hinge structure.

### Claim 5 (depends on 4)

The easily-maintainable lamp connection device of claim 4, characterized in that both ends of said axle are fixed at an inside of an assembling recess located in a wall of the front head.

### Claim 6 (depends on 2)

The easily-maintainable lamp connection device of claim 2, characterized in that said hinge mechanism includes an axle and a fixed plate fixed firmly at an inside wall of the front head by using screws, a connecting end of the fixed plate wraps around the axle and forms a hinge structure; said lower end of the moveable link rod wraps around the axle and forms a hinge structure.

### Claim 7 (depends on 3)

The easily-maintainable lamp connection device of claim 3, characterized in that said hinge mechanism includes an axle and a fixed plate fixed firmly at an inside wall of the front head by using screws, a connecting end of the fixed plate wraps around the axle and forms a hinge structure; said lower end of the moveable link rod wraps around the axle and forms a hinge structure.

### Claim 8 (depends on 6)

The easily-maintainable lamp connection device of claim 6, characterized in that both ends of said axle are fixed at an inside of an assembling recess located in a wall of the front head.

### Claim 9 (depends on 7)

The easily-maintainable lamp connection device of claim 7, characterized in that both ends of said axle are fixed at an inside of an assembling recess located in a wall of the front head.