Light-emitting diode (LED) high-voltage crosscurrent non-watertight module

Abstract

The invention relates to a novel advertisement identification light-emitting diode (LED) backlight technology and provides an LED high-voltage crosscurrent non-watertight module which comprises two LED circuit boards. 24V high-voltage power supply is adopted in the circuit boards, constant current drive is adopted, the circuit boards are connected through three wires, and one remaining ends of the circuit boards are respectively connected with two power lines. The LED high-voltage crosscurrent non-watertight module further comprises two plastic casings which are of [-shaped groove structures and are used for fixing the two LED circuit boards. The 24V power supply is adopted in an LED advertisement identification backlight source, the voltage is high, and the current is low; the constant current drive technology is adopted simultaneously, the constant current precision is high, LED light decay is small, the service life is long, peripheral elements are few, the cost is low, the anti-damping capability is strong, the non-watertight module is particularly suitable for long-distance power supply, and the brightness is unchanged while the voltage attenuation can be as high as 4V. Besides, a constant current chip LC1912 imported with original packaging is adopted in a circuit, and the reliability is high.

Description

technical field [0001] The invention relates to a novel LED backlight technology for advertising signs, and provides an LED high-voltage cross-flow non-waterproof module. Background technique [0002] At present, the backlight source of the light box used in the advertising sign industry mainly adopts the technical solution of low voltage and non-constant current, which has the following problems: [0003] The LED drive voltage is low, and because of the problem of voltage drop, the transmission distance of the LED power supply is relatively short, so the LED power supply must be installed near the LED module, which makes the LED power supply often work in the open air, which requires that the LED power supply must have good Waterproof and sunscreen ability, LED power supply costs increase. [0004] The circuit adopts the technology of non-constant current, and the attenuation of the voltage causes the current to be different, and the brightness of the front and rear is...

AI Technical Summary

Problems solved by technology

[0006] The power supply distance of the LED power supply is short, and it is difficult to maintain and replace the power supply;

[0007] In short, the disadvantages of the low voltage non-constant current technical solution are as follows: short power supply distance, high current, poor voltage anti-attenuation ability, many connecting lines, high installation cost, difficulty in consistent brightness between front and rear, and difficult maintenance

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