CN102454964A - Multifunctional LED Substrate - Google Patents

Abstract

A multifunctional LED substrate is provided with a circuit substrate, a light emitting diode module is packaged on the circuit substrate, the circuit substrate is provided with a first bridge rectifier circuit and a second bridge rectifier circuit, the first bridge rectifier circuit has a group of first load nodes and a group of first power supply nodes, the second bridge rectifier circuit has a group of second load nodes and a group of second power supply nodes, and the first power supply node and the second power supply node are in parallel, and the light emitting diode module is provided with a first light emitting element and a second light emitting element formed by connecting a plurality of light emitting diodes in series, and the first light emitting element and the second light emitting element are respectively connected to the first load node and the second load node, and the starting power required by the light emitting diode module can be changed by using whether the first and second load nodes are connected in series, so that the light emitting diode module packaged on the circuit substrate can be started by using power supplies of different voltages.

Description

Multifunctional LED Substrate

technical field

The invention relates to a multifunctional LED substrate, in particular to an LED substrate that can use different AC power voltages to start a light emitting diode module.

Background technique

Light Emitting Diode (LED) is a photoelectric conversion semiconductor element. Compared with traditional incandescent light bulbs or fluorescent lamps, light emitting diodes consume less power and have a longer service life, so their applications can be more efficient. Extended to general lighting purposes, while replacing traditional incandescent bulbs and fluorescent lamps.

However, in many applications, multiple light-emitting diodes are often connected in parallel or in series. However, since the driving of the light-emitting diodes must provide an appropriate voltage level (level), when most light-emitting diodes are packaged in a circuit in parallel or in series After the substrate is installed, the LEDs on the circuit substrate can only be driven at a rated voltage, so manufacturers need to design different circuit substrates and LEDs for different operating voltages to meet the needs of users, resulting in increased costs.

Contents of the invention

The main purpose of the present invention is to use whether the load nodes of the two bridge rectifier circuits are connected in series or not to change the start-up power required by the light-emitting elements connected to each bridge rectifier circuit, so that the light-emitting diode module packaged on the circuit substrate , can be started with power supplies of different voltages.

To achieve the above purpose, the present invention is provided with a circuit substrate on which a light-emitting diode module is packaged. The circuit substrate is provided with a first bridge rectifier circuit and a second bridge rectifier circuit. The first bridge rectifier circuit has a set of first a load node and a set of first power supply nodes, the second bridge rectifier circuit has a set of second load nodes and a set of second power supply nodes, and the first power supply node and the second power supply node are connected in parallel, and the LED module A first light-emitting element and a second light-emitting element formed by connecting a plurality of light-emitting diodes in series are provided, and the first light-emitting element and the second light-emitting element are respectively connected to the first load node and the second load node.

The present invention also provides a multifunctional LED substrate, which has a circuit substrate on which a light-emitting diode module is packaged. The circuit substrate is provided with a first bridge rectifier circuit and a second bridge rectifier circuit. The first bridge rectifier The circuit has a group of first load nodes and a group of first power nodes, the second bridge rectifier circuit has a group of second load nodes and a group of second power nodes, and the first power nodes and the second power nodes are connected in parallel shape, and the LED module is provided with a first light-emitting element and a second light-emitting element formed by connecting a plurality of light-emitting diodes in series, and the first light-emitting element and the second light-emitting element are respectively connected to the first load node and the second load node , and the first load node and the second load node form a series connection.

The present invention can use whether the load nodes of the two bridge rectifier circuits are connected in series or not to change the start-up power required by the light-emitting parts connected to each bridge rectifier circuit, so that the light-emitting diode module packaged on the circuit substrate; Voltage power supply to start, convenient for users to use.

Description of drawings

Fig. 1 is the perspective view of the first embodiment of the present invention;

Fig. 2 is the circuit diagram of the first embodiment of the present invention;

3 is a perspective view of a second embodiment of the present invention;

Fig. 4 is the circuit diagram of the second embodiment of the present invention;

FIG. 5 is an equivalent circuit diagram of the second embodiment of the present invention.

Explanation of reference signs: 1-circuit substrate; 2-light-emitting diode module; 21-first light-emitting element; 22-second light-emitting element; 3-first bridge rectifier circuit; 31-first load node; 32-first power supply node; 4-the second bridge rectifier circuit; 41-the second load node; 42-the second power supply node.

Detailed ways

Please refer to Fig. 1 and Fig. 2, it can be clearly seen from the figure that the multifunctional LED substrate of the present invention has a circuit substrate 1, and a light emitting diode module 2 is packaged on the circuit substrate 1, wherein:

The circuit substrate 1 is provided with a first bridge rectifier circuit 3 and a second bridge rectifier circuit 4, the first bridge rectifier circuit 3 is provided with four connected diodes D1, D2, D3, D4, and the diodes D1, D2 and The connection mode of the diodes D3 and D4 is opposite, so that a group of first load nodes 31 is formed between the diodes D1 and D2 and between the diodes D3 and D4, and a first load node 31 is formed between the diodes D1 and D3 and between the diodes D2 and D4. A power supply node 32; the second bridge rectifier circuit 4 is provided with four connected diodes D5, D6, D7, D8, and the connection mode of diodes D5, D6 and diodes D7, D8 is opposite, so that between diodes D5, D6 and A group of second load nodes 41 is formed between the diodes D7 and D8, and a group of second power supply nodes 42 is formed between the diodes D5 and D7 and between the diodes D6 and D8, and the first power supply node 32 and the second power supply node 42 are connected in parallel; the diodes D1, D2, D3, D4, D5, D6, D7, and D8 can be Zener diodes, such as Zener diodes.

The light-emitting diode module 2 is provided with a first light-emitting element 21 and a second light-emitting element 22 formed by connecting a plurality of light-emitting diodes in series, the first light-emitting element 21 is connected to the first load node 31, and the second light-emitting element 22 is connected to the the second load node 41 .

When an AC power supply (such as: 110V AC power supply) is input through the first power supply node 32 and the second power supply node 42, when the first bridge rectifier circuit 3 is working, two diodes D1 and D4 are turned on and two One diode D2, D3 is turned off, or two diodes D2, D3 are turned on and two diodes D1, D4 are turned off, so that the output voltage on the first light-emitting element 21 maintains the same polarity, so that the first light-emitting element 21 operation; while the second bridge rectifier circuit 4 is working, there are two diodes D5, D8 conduction and two diodes D6, D7 cut-off, or two diodes D6, D7 conduction and two diodes D5, D8 When it is turned off, the output voltage on the second light-emitting element 22 maintains the same polarity, thereby enabling the first light-emitting element 21 to operate.

Please refer to Fig. 3 to Fig. 5, when the user wants to increase the voltage of the AC power input by the first power node 32 and the second power node 42 (such as: 220V AC power), the user first connects the first load node 31 It is connected in series with the second load node 41 so that the first light-emitting element 21 and the second light-emitting element 22 form a series connection. At this time, since the first power supply node 32 and the second power supply node 42 are connected in parallel, the first load node 31 It is connected in series with the second load node 41, so the diodes D2, D4, D5, and D7 between the first power supply node 32 and the second power supply node 42 will form a short circuit (as shown in Figure 5), and when the AC power input first When the power supply node 32 is connected to the second power supply node 42, two diodes D1, D8 are turned on and two diodes D3, D6 are turned off, or two diodes D3, D6 are turned on and two diodes D1, D8 are turned off, so that The output voltage flowing through the first light-emitting element 21 and the second light-emitting element 22 maintains the same polarity, thereby enabling the first light-emitting element 21 and the second light-emitting element 22 to operate, and because the first light-emitting element 21 and the second light-emitting element 22 are connected in series, which increases the voltage required for starting, so the first light-emitting element 21 and the second light-emitting element 22 will not be burned due to the increase in the voltage of the input AC power supply.

Therefore, the present invention can solve the deficiencies and shortcomings of the prior art. Its key technology is that the present invention utilizes the first bridge rectifier circuit 3 and the second bridge rectifier circuit 4 to respectively connect a plurality of light-emitting diodes connected in series. The first light-emitting element 21 and the second light-emitting element 22, and whether the first load node 31 and the second load node 41 are connected in series or not, to change the voltage required for starting the first light-emitting element 21 and the second light-emitting element 22, The light-emitting diode modules 2 on the same circuit substrate 1 can be activated by voltages of different AC power sources, which is convenient for users to use.

Claims (2)

1. a Multifunctional LED substrate has circuit substrate, is packaged with light-emitting diode (LED) module on the circuit substrate, it is characterized in that:

This circuit substrate is provided with first bridge rectifier and second bridge rectifier; First bridge rectifier has one group of first load node and one group of first power supply node; Second bridge rectifier has one group of second load node and one group of second source node; And first power supply node and second source node are for being parallelly connected shape; And light-emitting diode (LED) module is provided with a plurality of light emitting diode and is connected in series first illuminating part and second illuminating part that forms, and first illuminating part and second illuminating part are connected to first load node and second load node.

2. a Multifunctional LED substrate has circuit substrate, is packaged with light-emitting diode (LED) module on the circuit substrate, it is characterized in that:

This circuit substrate is provided with first bridge rectifier and second bridge rectifier; First bridge rectifier has one group of first load node and one group of first power supply node; Second bridge rectifier has one group of second load node and one group of second source node; And first power supply node and second source node are for being parallelly connected shape; And light-emitting diode (LED) module is provided with a plurality of light emitting diode and is connected in series first illuminating part and second illuminating part that forms, and first illuminating part and second illuminating part be connected to first load node and second load node, and first load node and second load node formation series-like.

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