The LED lamp is an electroluminescent semiconductor material chip, which is cured with silver or white glue to the bracket, and then connected to the chip and the circuit board by silver wire or gold wire, and sealed with epoxy resin to protect the inner core wire. Function, and finally install the outer casing, so the LED lamp has good seismic performance. LED lamp bead is a kind of light-emitting diode, which can convert electric energy into light energy semiconductor. It changes the principle of incandescent lamp tungsten light emission and energy-saving lamp three-base color powder illumination, and uses electric field illumination. LED lamps can be DC DC220V, no starter and ballast. The startup time is short and there is no flash frequency. The main features of LED lamps are: 1 New green environmental protection light source: LED uses cold light source, glare is small, no radiation, no harmful substances are produced during use. LED operating voltage is low, using DC drive mode, ultra-low power consumption (single tube 0.03 ~ 0.06W), electro-optical power conversion is close to 100%, energy saving more than 80% than traditional light source under the same lighting effect. LEDs have better environmental benefits, no ultraviolet and infrared rays in the spectrum, and waste can be recycled, no pollution, no mercury, and can be safely touched. It is a typical green lighting source. 2 Long life: LED is a solid cold light source, epoxy resin package, anti-vibration, there is no loose part in the lamp body, there are no shortcomings such as filament light-emitting, heat deposition, light decay, etc. The service life can reach 60,000~100,000. The hour is more than 10 times the service life of the traditional light source. The LED performance is stable and can work normally in -30~+50oC environment. 3 multi-transformation: LED light source can use the three primary colors of red, green and blue. Under the control of computer technology, the three colors have 256 gray levels and can be mixed arbitrarily, which can produce 256X256X256 (ie 16777216) colors, forming different light colors. The combination. The color of the LED combination is varied, enabling a variety of dynamic changes and various images. 4 High-tech: Compared with the light-emitting effect of traditional light sources, LED light source is a low-voltage microelectronic product, which successfully combines computer technology, network communication technology, image processing technology and embedded control technology. The chip size used in the conventional LED lamp is 0.25 mm×0.25 nm, and the size of the LED for illumination is generally 1.0 mm×1.0 mm or more. LED die-formed work-table structures, inverted pyramid structures, and flip-chip designs improve their luminous efficiency and deliver more light. Innovations in LED package design include high-conductivity metal block substrates, flip-chip designs, and bare-plate cast leadframes. These methods can be used to design high-power, low-thermal resistance devices, and these devices have higher illumination than conventional LEDs. The illuminance of the product is greater. 1 Luminous flux: mainly refers to the brightness of the product. The luminaire emits light energy by consuming electric energy. The greater the luminous flux, the more light energy is emitted. Therefore, it is an indicator of the ability of the light source to illuminate. When the power consumption of the two lamps is the same, the larger the luminous flux, the better the lamp. General LED lamps can reach 90-110LM/W in time and even reach 120-150LM/W. (Traditional incandescent lamp 10-15LM/W energy saving lamp 30-65LM/W) 2 color rendering index: color rendering index refers to the ability to reproduce a color. The higher the color rendering index, the more positive the color. A comparison of the appearance color of an object with a reference to the same color temperature or a reference light source (incandescent or painted). Reducing the percentage of the true color of the object, the correct expression of the original color of the material requires the use of a light source with a high color rendering index, the value is close to 100, and the color rendering is best. Incandescent lamp 97-100 LED lamp 85-12 3 color temperature: refers to the color of light, the higher the color temperature, the light blue, the lower the color temperature. The light is reddish. It is based on sunlight. There are three kinds of conventional color temperatures. Warm light (yellow light) 2700-3500K represents the symbol: RN. Neutral white 4300-5000K represents the following: RZ white light (cold white) 5800-6500K representative symbol: RR. The specific color temperature chart is as follows: 4 power factor: and power compensation of the power conversion light source. The magnitude of the power factor depends on the power factor of the drive power supply. The greater the power factor, the better the conversion efficiency 5 heat dissipation capacity: The heat dissipation capability of LED products directly affects the service life of the product and the light decay rate. Products with higher power and longer lighting times require higher heat dissipation. Conventional LED products use a metal case with internal or external heat sinks to dissipate heat from the fixture. Area Array Sensor,Passive Infrared Detector,Infrared Heat Detector,Infrared Area Sensor Ningbo NaXin Perception Intelligent Technology CO., Ltd. , https://www.nicswir.com
First, the introduction of LED lights