LED floodlight is a functional lighting, issued a strong direction of the uniform beam, the beam angle is generally wide beam. When the object is shaken, the brightness is very slow, can produce soft and transparent lighting effect, widely used in outdoor billboards, bridges and halls, squares, LED Flood Light construction and other places.
What is the working principle of LED floodlights?
1. In fact, he is a kind of LED lights, gallium arsenide, gallium arsenide, AlGaAs and other semiconductors made of electricity into light energy process.
2. An N-layer formed mainly of an N-type semiconductor, a P-layer formed of a P-type semiconductor, and an intermediate active layer. When the forward bias is applied, the holes in the P-type region diffuse in the negative direction and enter the active region, LED Flood Light and the electrons in the N-type region will diffuse in the positive direction and enter the active region. When the electrons and holes are combined, Will spontaneously emit light. When the material is used, different colors will emit light, such as red, orange, yellow, green, blue or invisible light, due to the difference in energy level.
3. And when the forward current is greater, the LED light emitted by the more bright, LED light stability is also affected by the current stability, so in the application should try to choose a stable current LED drive constant current source.
What is the difference between the LED floodlights on the market?
1, LED floodlight brightness (MCD) different, the price is different. LED for LED lamps should meet the laser class Ⅰ standard.
2, anti-static ability Antistatic ability LED, long life, and thus high prices. Usually anti-static greater than 700V LED can be used for LED lighting.
3, the same wavelength of the LED, the same color, LED Flood Light such as the requirements of the same color, the price is high Producers who do not have LED spectrophotometers are difficult to produce purely color products.
4, leakage current LED floodlight is a one-way conductive light, if there is reverse current, known as leakage, leakage current LED, short life, low prices.
5, the use of different angles LED light angle is not the same. LED Flood Light Special glowing angle, the price is higher. Such as full diffuse angle, the price is higher.
6, the quality of life is the key to the quality of life, life by the decay of light. Light fades small, long life, long life, high prices.
7, the chip LED flood light for the wafer, different chips, the price difference is very large. Japan, the United States of the chip more expensive, generally Taiwan and domestic chip prices lower than Japan, the United States (CREE).
8, LED Flood Light the chip size of the chip size to side length, large chip LED quality is better than the small chip. The price is proportional to the size of the chip.
9, colloidal colloidal LED colloid is generally an epoxy resin, plus anti-ultraviolet and fire retardant LED more expensive, high-quality outdoor LED lighting should be anti-ultraviolet and fire.
According to the use of places and the actual needs
1. What kind of LED floodlights to buy what is used at home or yard, LED Flood Light or engineering, or special occasions, the general household <outdoor <project <explosive area <mine, this can save money.
2.LED floodlight is mainly divided into shell and light source, the light part of the light source, the light source is good or bad affect the brightness and light decay rate, the light decay rate is like you used for half a year he will brightness attenuation, this is each The light will inevitably appear, but the degree is different, good lights in about 90%, bad to 60% each year, the basic second year is not easy to use, and light failure serious, affecting the glasses, and people Dull, reduce office efficiency.