LED lamps

Abstract

A LED lamp is prepared as switching in set voltage control circuit and set current control circuit in each series-connected LED circuit to let each LED hold a constant value for ensuring LED service life, still holding original constant current by the other LED when one or partial LED is damaged to cause short-circuit and keeping normal operation state by LED on the other circuit based on original current when one or partial LED on certain circuit is cut off.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to an LED lamp. Background technique [0002] LED solid light source white light-emitting diode, all solid cold light source, compared with traditional lighting technology, the biggest difference is the difference in structure and material, it is a semiconductor that can convert electrical energy into visible light, the upper and lower layers are equipped with electrodes, the middle has Conductive materials, the color of light changes according to the nature of the material, the working voltage is only 1-4 volts, and the service life is more than 100,000 hours. There are no elements such as mercury added inside the LED, no pollution, and the waste can be recycled. It is a typical green lighting product. LED lamps generally consist of a lamp body, a number of series-parallel LED light-emitting diodes in the lamp body, and a number of series-parallel LED light-emitting diodes. The L...

AI Technical Summary

Problems solved by technology

Most of the control circuits in the existing LED lamps use constant voltage output. When the voltage reaches 3.8V, the current on the LED is 50mA, which has exceeded the normal use standard of the LED, and its life and light decay will be greatly reduced. When the voltage reaches 4.2V, the current on the LED is 110mA, then the LED will die quickly

Assuming that when an LED is damaged and a short circuit occurs, the rest of the LEDs on the line continue to work, but due to the short circuit of one LED, the current of the rest of the LEDs on the line increases, and the result is to speed up the death of the rest of the LEDs.

When an LED is damaged and the circuit breaks, all the other LEDs on the line will stop working, causing the current of the LEDs on the remaining lines to increase exponentially, which will quickly lead to the death of the LED.

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