Circuit for enhancing use reliability of discrete LED light source

Abstract

The invention relates to a circuit for enhancing the use reliability of a discrete LED (Light-Emitting Diode) light source and belongs to the technical field of LED lighting. The circuit comprises an aluminum base copper-clad plate, a discrete LED light source D11, a diode D21, a pressure-sensitive resistor R1 and a recoverable fuse R2, wherein the aluminum base copper-clad plate is divided by an insulating material and forms a positive electrode end and a negative electrode end; the discrete LED light source D11, the diode D21, the pressure-sensitive resistor R1 and the recoverable fuse R2 are fixed on the aluminum base copper-clad plate; one end of the recoverable fuse R2 is connected with the positive electrode end of the aluminum base copper-clad plate, and the other end of the recoverable fuse R2 is connected with a positive electrode of the discrete LED light source D11, a negative electrode of the diode D21 and one end of the pressure-sensitive resistor R1; and a negative electrode of the discrete LED light source D11, a positive electrode of the diode D21 and the other end of the pressure-sensitive resistor R1 are connected with the negative electrode end of the aluminum base copper-clad plate. The circuit has the advantages that the problem of light attenuation generated to LED impact as the discrete LED light source D11 suffers from lightning surge and instantaneous power-on / off in the running process is solved, and the circuit has the advantages of energy conservation, long service, environment friendliness and low maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of LED lighting, and in particular relates to a circuit for increasing the use reliability of discrete LED light sources. Background technique [0002] The appearance of LED (light-emitting diode) light source is the second great invention after the incandescent lamp, and it will become an innovation in the light world. As a solid-state semiconductor cold light source, LED has advantages that traditional light sources do not have: high efficiency and energy saving, long life, green environmental protection, rich colors and high safety factor. With the implementation of the national energy saving and emission reduction policy, LED lamps have become one of the most popular semiconductor light sources at present, and they have a great momentum of replacing traditional light sources. The current LED lamps, as emerging lamps, many products have been widely used in real life. However, in the actual use process, ...

AI Technical Summary

Problems solved by technology

When the LED is working normally, these two parameters will not be involved, but when the voltage pulsation, drive power on / off moment and lightning surge, if the voltage applied to both ends of the LED exceeds the nominal value of these two parameters, LED will suffer irreversible electrical damage, which is the main cause of light decay

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