Program controlled mixed color LED light projector

Abstract

A programmed control mixing color LED spot light is provided, which comprises a controller and at least two LED light cluster among three LED light cluster colored in red, green and blue. The controller is provided with a monoboard computer, an external communication slot and LED light cluster drive circuit of corresponding quantity; wherein, a procedure and data storage is arranged inside and / or outside the monoboard computer. The drive circuit uses PWM pulse width control constant current out switch power supply; the procedure and data storage is provided with control modules capable of enabling control interfaces to output frequency and pulse width modulation signals with adjustable duty ratio to the drive circuit controlled by set procedure to change the luminosity, color and frequency as the procedure. Together with the temperature monitor and by controlling the color mixing and frequency variation of PWM pulse width constant current between 0 and 255 grade for the LED lighting cluster in three colors as red, green and blue, the invention enables the LED lighting cluster to work under best and highest status, and has the advantages of small bulk, high luminosity, energy-saving, long service life, saturated and bright color.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a program-controlled color-mixing LED floodlight. Background technique [0002] LED flood light has the characteristics of small size, low power, long life, saturated color and no ultraviolet light. With the development of LED technology, LED has been widely used, especially for: 1) equipment that emits light directly to the viewer, such as: backlighting of LCD screen, indicator light, LED large screen, etc.; 2) using LED A device that emits a light source onto another object or the surface of an object and is seen by the viewer, such as: floodlights, or floodlights, spotlights. However, due to the problem of high unit brightness cost, LED floodlights have not been well promoted and applied at present. Most of the products seen on the market use simple electronic circuits to increase their luminous intensity through large currents in order to Solve the problem of high brig...

AI Technical Summary

Problems solved by technology

However, due to the problem of high unit brightness cost, LED floodlights have not been well promoted and applied at present. Most of the products seen on the market use simple electronic circuits to increase their luminous intensity through large currents in order to Solve the problem of high brightness cost

In this way, although the brightness can be temporarily increased by increasing the working current of the LED, it greatly shortens the lifespan of the LED, increases the cost of the product, and limits the market sales.

In addition, we found that the brightness of the LED is greatly affected by its operating temperature, the higher the temperature, the lower the brightness

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