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Full-voltage serial-parallel led lamp

An LED lamp, series-parallel technology, applied in the field of full-voltage series-parallel LED lamps, can solve the problems of increased storage pressure of linear LED lamp products, burning of linear LED lamps, etc.

Inactive Publication Date: 2014-03-26
LUXUL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, since the existing linear LED lamp manufacturers have to design and manufacture different linear LED lamps separately, the storage pressure of their linear LED lamp products increases; moreover, as a result, consumers must confirm when purchasing Whether the purchased linear LED lights meet the volt...

Method used

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  • Full-voltage serial-parallel led lamp

Examples

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no. 1 example

[0053] Please refer to figure 1 As shown, it is the first embodiment of the full-voltage series-parallel LED lamp of the present invention, which includes:

[0054] At least two LED units 10, two adjacent LED units 10 are connected in series through a diode 11, the at least two LED units 10 connected in series include an anode and a cathode; wherein the cut-in voltage V of each LED unit 10 LED is lower than a low-voltage section voltage, and the cut-in voltage V of the at least two LED units 10 LED The sum is lower than the voltage of a high-voltage section and higher than the voltage of the low-voltage section;

[0055]An LED drive circuit, including a rectifier 20 and a constant current drive unit 21, wherein the rectifier 20 rectifies an AC power supply AC / IN into a DC power supply and outputs it to the at least two LED units 10 and the constant current drive unit 21; In this embodiment, the constant current driving unit 21 and the at least two LED units 10 constitute ...

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Abstract

The invention provides a full-voltage serial-parallel LED lamp including at least two LED units, an LED driving circuit connected to the LED units and a serial-parallel control circuit. The serial-parallel control circuit includes at least one positive electrode switching switch, at least one negative switching switch and a first voltage detecting and control circuit. The positive electrode switching switch and the negative electrode switching switch are connected between the positive electrodes and the negative electrodes of the LED units correspondingly. The first voltage detecting and control circuit controls the positive electrode switching switch and the negative electrode switching switch to conduct and enables the LED units to connect with each other in parallel after detecting low-voltage section voltage. Otherwise, the first voltage detecting and control circuit controls the positive electrode switching switch and the negative electrode switching switch to conduct and enables the LED units to connect with each other in series after detecting high-voltage section voltage. Since the cut-over voltage of the LED units connected in series is increased to a level capable of bearing the high-voltage section voltage, the LED units do not burn after being lighted on.

Description

technical field [0001] The invention relates to a full-voltage LED lamp, in particular to a full-voltage series-parallel LED lamp using a linear drive circuit. Background technique [0002] Light Emitting Diode (LED; Light Emitting Diode) is a common lighting lamp on the market. Compared with traditional incandescent bulbs, it has the characteristics of high luminous efficiency, low power consumption and low pollution; , so it is difficult to use the widely used alternating current; for this reason, the industry has developed a linear LED lamp using a linear drive circuit; please refer to Figure 11 As shown, the existing linear LED lights include: [0003] A rectifier 60, connected to an AC power supply AC / IN, and converting the above-mentioned AC power supply AC / IN into a pulsating DC power supply; [0004] An LED unit 61 is connected in series to the rectifier 60 and includes a plurality of LED light sources; and [0005] A constant current controller 62 is connected in...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 潘政宏喻鹏飞
Owner LUXUL TECH
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