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LED Lights

- Dec 14, 2016 -




The main features


1. The voltage of LED lights, the use of low voltage power supply, power supply voltage between 2-4 v, and varies according to the product, so it is a than using high voltage power supply; More secure power supply, especially suitable for public places;


2. Current: brightness is increased as the current lights, small power LED lamp bead working current of 0 to 60 ma, high power LED working current is more than 150 ma.


3. Effectiveness: compared with incandescent lamp lighting energy consumption reduced by 80%.


4. Applicability: small, each unit of LED is 3 to 5 mm square dice, so can be prepared into various shapes of the device, and is suitable for variable environment.


5. Stability: 100000 hours, droop for 50% of the original.


6. Response time: its response time of millisecond incandescent lamps, LED lights response time in nanoseconds.


7. Pollution to the environment: no harmful metallic mercury.


8. Color: changes the current can change color, leds conveniently by the methods of chemical modification, adjust the material of the band structure and the band gap, red yellow green blue orange polychromatic light. Such as small current when the red LED, with the increase of current, can in turn into orange, yellow, and finally for the green.



The advantages of LED lamp bead


(1) work long life: LED as a solid conductor light-emitting devices, compared with other luminescence devices have a longer working life. Its brightness half-life usually can reach hundreds of hours. If use leds to replace the traditional automobile lamp, so it will be far greater than the life of a car body of life, has the characteristics of life without repair and replacement.


(2) low power consumption: LED work is a kind of low voltage devices, therefore under the same brightness, the minimum power consumption, can reduce energy consumption. On the contrary, with the development of technology and material, will have a higher luminous efficiency. People were calculated, if Japan all substitute LED lighting lamps and lanterns, can reduce the large power plant, which is good for environmental protection.


(3) a fast response time, the LED can generally be in the tens of milliseconds (ns) in the response, so it is a device that tells the other light source. Level in made car LED brake light at high speeds, improved the security of the car.


(4) small volume, light weight, resistance to fight: this is the inherent characteristics of semiconductor solid device. Color can make all kinds of clear and delicate LED display device.


(5) easy to move light, color, control: LED as a light-emitting device, can pass through the current changes in the control brightness, can also be accomplished by configuration of different wavelengths LED color change and adjustment. So use LED light source or display screen, easy to through the electronic control to meet the needs of various applications, compatibility with IC computer in very fine long hair. In addition, the application of LED light source is not restricted by will matter in principle, plasticity is extremely strong, can be arbitrary extension, to realize modular assembling. The large screen color display of the LED.


(6) made of LED light source, there is no environmental pollutants such as mercury, lead, and will not pollute the environment. So people will be LED light source is known as the "green" light is deserved.


Parameters that


1, brightness


The brightness of the LED lamp bead is different, the price is different.


Light cup: general brightness for 60-70 lm; Ball steep light: general brightness is 80-90 lm.


1 w red light, the brightness is commonly 30-40 lm; 1 w green light, brightness is generally 60-80 lm; 1 w yellow light, brightness is commonly 30-50 lm; 1 w blue light, brightness is usually 20 to 30 lm.


Note: 1 w brightness for 60-110 lm; 3 w brightness up to 240 lm; 5 w - 300 w is integrated chip, using series/parallel encapsulation, basically see how much current, voltage, and a few strings.


LED lens: a lens PMMA, PC, is commonly used in optical glass, silica gel (hard soft silica gel, silica gel) and other materials. Angle of the light efficiency is higher, the greater the LED lens with a small Angle, the light will shoot far.


2, the wavelength


Wavelength is consistent, the same color. The price is high.


White light warm color (color temperature 2700-4000 k), is the white color temperature (5500-6000 k), cold white color temperature (7000 k) europeans prefer warm white.


Red: band 600-680, 620630 of which is mainly used for stage lights, 690 near infrared light.


Blu-ray: band 430-480, and 430 more stage light.


Green: band 500-580, and 500 more stage light.


3, light Angle


Use different LED light Angle is different. Special light Angle, the price is higher.


4, antistatic ability


Antistatic ability of the LED lamp bead, long service life, thus higher prices. Antistatic usually greater than 700 v LED lamp bead can be used in the LED lighting.


5, the leakage current


LED lamp bead is a one-way conductive lights, if there is a reverse current, is called the leakage, leakage current big LED lamp bead, short service life, low price






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