LED lamp component circuit unit and compound serial LED lamp circuit

Abstract

The related circuit unit of LED lamp assembly comprises: a LED branch with one LED or at least serial two LED's, and a voltage-stabilizing branch with one or at least serial voltage stabilizing diodes. Wherein, it parallels former branches. The composite serial LED lamp circuit comprises at least two of former LED lamp assembly circuit units. Compared with current lighting circuit, this invention improves reliability and maintenance, reduces structure complexity and cost, and overcomes the technical problem applying serial LED load in LED lighting circuit.

Description

technical field [0001] The invention relates to a simple and practical new technology of energy-saving lighting, in particular to a new technology of LED lamp circuit using a new generation of lighting source——LED semiconductor light source. Background technique [0002] In recent years, a new concept of "green lighting" has been proposed in the field of lighting, which means vigorously developing and promoting high-efficiency, energy-saving, environmentally friendly and healthy lighting appliances, eliminating and replacing traditional low-efficiency lighting sources, and saving lighting electricity. At present, in the field of electric lighting technology, from thermal radiation light sources represented by incandescent lamps, to gas discharge light sources represented by fluorescent lamps, to solid-state light-emitting light sources represented by LED semiconductors, LED semiconductor light sources are characterized by their small size and weight. Lightweight, low energy ...

AI Technical Summary

Problems solved by technology

The above-mentioned LED lighting circuit has disadvantages such as complex circuit structure, large current, large power dissipation, low reliability, difficult maintenance, low recycling rate, and high cost, which is not conducive to popularization and promotion. Currently, it is generally only used in decoration, advertising, emergency lighting and other places. use

[0005] For the LED drive circuit, the series LED load has the advantages of small transformation ratio, small output current, low power dissipation, and good voltage stabilization effect. It has always been the preferred circuit structure for LED application development, but the existing series LED load circuit They all use a single LED series connection method. As long as one LED in the series branch is open, the entire LED series branch will not work, or as long as one or more LEDs in the series branch are short-circuited, the remaining LED voltage will drop. Once the circuit breaks down, it is difficult for non-professionals to repair and can only be replaced as a whole

Therefore, this type of LED lighting circuit using a single series LED load also has disadvantages such as poor economical practicability, low reliability, short circuit life, and difficult maintenance, which is not conducive to popularization and application.

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