# US 11,028,974 B1 · LED tube with built-in driving power module

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- Number: US 11,028,974 B1
- Document ID: US11028974B1
- Status: Granted
- Kind: B1
- Application number: 16/857,186
- Filed: 2020-04-24
- Published: 2021-07-01
- Granted: 2021-06-08
- Earliest claimed: 2019-12-25
- Assignees: Xiamen PVTECH Co., Ltd.
- Applicants: Xiamen PVTECH Co., Ltd.
- Inventors: Fuxing Lu; Rongtu Liu
- Web page: https://patentgrep.com/patent/US11028974B1

## CPC

- F21K 9/278: Arrangement or mounting of circuit elements integrated in the light source
- F21V 23/006: {the substrate being distinct from the light source holder}
- F21V 23/06: the elements being coupling devices {, e.g. connectors}
- H05B 45/357: specially adapted for retrofit LED light sources
- H05B 45/3578: Emulating the electrical or functional characteristics of discharge lamps
- F21V 23/009: {the casing being inside the housing of the lighting device}
- F21Y 2103/10: comprising a linear array of point-like light-generating elements
- F21Y 2115/10: Light-emitting diodes [LED]
- H05B 45/3725: Switched mode power supply [SMPS]
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- 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

An LED tube with built-in driving power module is provided. Each of two ends of the LED tube has a conductive component electrically connected to mains supply. The conductive component at least includes a conductive pin assembly and a sleeve member for disposing the conductive pin assembly. The driving power module is formed by circuit boards, and the circuit boards are disposed in the sleeve member. Each of the circuit boards at least includes a functional operation unit, and the circuit boards are in series connection via one or more electrical connection members. The capacity space at both ends of the sleeve of LED tube is used to concentrate each circuit board in order to make full use of the capacity space. Meanwhile, the larger sleeve mold structure is avoided to cause the change of product appearance and increase the project development cost.

## Claims

### Claim 1

An LED tube with built-in driving power module, wherein each of two ends of the LED tube comprises:
a conductive component electrically connected to mains supply and comprising a conductive pin assembly and a sleeve member for disposing the conductive pin assembly;
a driving power module being formed by a plurality of circuit boards disposed in the sleeve member and being in series connection; each of the circuit boards comprising a functional operation unit;
wherein the sleeve member has a receiving space for receiving the circuit boards in series connection;
wherein each of the circuit boards comprises at least connection port formed on a top surface of the circuit board and at least one electrical connection member formed on a bottom surface of the circuit board; and
wherein the circuit boards are in an stacking arrangement and are in series connection via the connection ports being connected with the electrical connection members.

### Claim 2 (depends on 1)

The LED tube with built-in driving power module according to claim 1, wherein the functional operation unit is a rectifier, a filtering circuit module, an anti-leakage detection circuit module, a DC-DC buck constant current circuit module, or a buck-boost constant current circuit module.

### Claim 3

An LED tube with built-in driving power module, wherein each of two ends of the LED tube comprises:
a conductive component electrically connected to mains supply and comprising a conductive pin assembly and a sleeve member for disposing the conductive pin assembly;
a driving power module being formed by a plurality of circuit boards disposed in the sleeve member and being in series connection via at least one electrical connection member; each of the circuit boards comprising a functional operation unit;
wherein the sleeve member has a receiving space for receiving the circuit boards in series connection;
wherein each of the circuit boards comprises at least connection port formed on a top surface of the circuit board, and an electrical connection member being a flexible wire;
wherein the circuit boards are in an stacking arrangement and are in series connection via the connection ports being connected with the at least one electrical connection member.

### Claim 4 (depends on 3)

The LED tube with built-in driving power module according to claim 3, wherein the functional operation unit is a rectifier, a filtering circuit module, an anti-leakage detection circuit module, a DC-DC buck constant current circuit module, or a buck-boost constant current circuit module.