Modular integrated lighting circuit

• US 9,974,125 B2
• Filed: 07/17/2015
• Issued: 05/15/2018
• Est. Priority Date: 07/17/2015
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Scarlata, Andrew Francis, Zhang, Hui
• Primary Examiner(s): Hammond, Crystal L
• Application Number:
  US14/801,908
• Publication Number:
  US 20170019963A1
• Time in Patent Office: 1,033 Days
• Field of Search: None
• CPC Class Codes: F21S 2/00 Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: 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
• CPC Class Codes: F21V 23/005 the substrate is supporting also the light source
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 27/02 Cable inlets
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/37 Converter circuits
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A light emitting diode (LED) circuit board includes a power input configured to supply power, a driving circuit configured to convert power, and a light emitting circuit configured to generate light. The power input is configured to supply power to the driving circuit. The driving circuit is configured to provide proper power to the light emitting circuit. The light emitting circuit is configured to generate light with the power provided by the driving circuit. An LED circuit board including a driving circuit, a light emitting circuit, and a plurality of semiconductor switches electrically connected between the driving circuit and the light emitting circuit is also provided. Each of the plurality of semiconductor switches is configured to electrically connect and electrically disconnect power from the driving circuit to the light emitting circuit.

Claims

1. A light emitting diode (LED) circuit board comprising:

a main power line passing directly from an input terminal to an output terminal, the main power line supplying a power to the input terminal and to the output terminal;

a plurality of LED strings, each LED string comprising at least one LED;

a plurality of semiconductor switches for controlling power to each of the plurality of LED strings based at least in part on a voltage of the power at the input terminal; and

a driving circuit configured to convert the power from the main power line and provide the converted power to the plurality of LED strings when a corresponding one or more of the plurality of semiconductor switches is electrically connected,

wherein the output terminal connects the main power line to and supplies the power to an input terminal of at least one other LED circuit board, and

wherein a quantity of the at least one other LED circuit boards is independent of the driving circuit of the LED circuit board and of the at least one other LED circuit board.

2. The LED circuit board of claim 1, wherein each of the plurality of semiconductor switches is connected in series with at least one of the plurality of LED strings and is configured to electrically connect or electrically disconnect the driving circuit and the at least one of the plurality of LED strings.

3. The LED circuit board of claim 1, wherein the driving circuit is configured to electrically connect in series to another driving circuit of another LED circuit board.

4. The LED circuit board of claim 1, wherein the driving circuit is configured to electrically connect in parallel to another driving circuit of another LED circuit board.

5. The LED circuit board of claim 1, wherein at least one of the LED strings comprises a plurality of LEDs connected in series.

6. A light emitting diode (LED) system comprising:

a power source configured to output a power;

a first LED circuit board comprising;

a first input terminal supplied with the power;

a first output terminal directly connected to the first input terminal and supplied with the power from the first input terminal;

a first plurality of LED strings at least one LED;

a first plurality of semiconductor switches for controlling power to each of the first plurality of LED strings based at least in part on a voltage of the power at the first input terminal; and

a first driving circuit configured to convert power from the first input terminal and provide the converted power to the first plurality of LED strings when one or more of the first plurality of semiconductor switches is electrically connected;

a second LED circuit board comprising;

a second input terminal supplied with the power through the first output terminal of the first LED circuit board;

a second output terminal directly connected to the first input terminal and supplied with the power from the second input terminal;

a second plurality of LED strings;

a second plurality of semiconductor switches for controlling power to each of the second plurality of LED strings based at least in part on a voltage of the power at the second input terminal; and

a second driving circuit configured to convert power from the first input terminal and provide the converted power to the first plurality of LED strings when one or more of the first plurality of semiconductor switches is electrically connected; and

a housing to which the first LED circuit board and the second LED circuit board are mounted.

7. The LED system of claim 6, wherein at least one of the LED strings of the first LED circuit board or the second LED circuit board comprises a plurality of LEDs connected in series.

8. A light emitting diode (LED) system comprising:

a first LED circuit board comprising a first driving circuit and a first plurality of LEDs;

a second LED circuit board comprising a second driving circuit and a second plurality of LEDs;

a main power supply line configured to supply power to both the first LED circuit board and the second LED circuit board, the main power supply line passing through an output terminal of the first LED circuit board and an input terminal of the second LED circuit board,

wherein the first driving circuit and the second driving circuit convert power supplied by the main power supply line and provide the converted power to the first and second pluralities of LEDs, respectively, and

the first driving circuit and the second driving circuit are connected in parallel.