LED fluorescent knowledge

LED fluorescent LED fluorescent lamp is ultra bright white LED as the light source, the shell is acrylic / aluminum alloy. Housing available the PC pipe production, high temperature of 135 degrees. LED fluorescent lamp with the traditional fluorescent lamp Dimensions caliber, LED High Bay Light length 60cm and 120cm, 150cm three kinds, the power was 10W, 16W and 20W, and 20W traditional fluorescent lamp (ballast) the actual power consumption of about 53W , 40W traditional fluorescent lamp (ballast) the actual power consumption is about 68W.
LED Tube T8
Definition:
The fluorescent light 10WLED have been brighter than the traditional 40W fluorescent lamp, fluorescent of 16WLED than traditional 64W fluorescent lamp should light, LED fluorescent light is soft and makes it easy to access granted. Life of 50K-80K hours supply voltage AC85V-260V (AC), without starter and ballast, quick start, low power, no flash, not easy to visual fatigue. It is not only super energy more environmentally friendly. National green energy-saving lighting projects focus on the development of one of the products, the main products to replace the traditional fluorescent lamp.
LED fluorescent installation is relatively simple, it points to the power supply built-in or external power supply built-in LED fluorescent installation, removed and replaced by the original fluorescent LED fluorescent lamp and ballast and starter removed, 220V AC The power can be directly applied to both ends of the LED fluorescent lamp can. External power supply, LED fluorescent generally equipped with a special lighthouse, replace the original is ready for use.
LED fluorescent lamp energy saving up to 80%, life expectancy of more than 10 times of ordinary lamp, is virtually maintenance free, there is no lamp, ballast must be frequently changed, from the Hui problem about six months down the cost savings can be exchange costs. Environment-friendly semiconductor light source, light and soft, pure spectrum, eye protection and physical health in favor of workers, 6000K cool white light gives a visual feeling of cool, help to focus and improve efficiency.
Light-emitting principle:
The terminal voltage of the PN junction to a LED High Bay Lights IP65certain barrier P and N region, the majority carriers to the other diffusion barrier when the forward bias voltage of the times decrease. Since the electron mobility is much larger than the hole mobility, so there will be a large number of electron diffusion to the P region, constitutes a P region minority carrier injection. These electrons and valence band of the hole recombination, when the composite obtained in the release of energy to light energy in the form of out. This is the PN junction light-emitting principle.
Luminous efficiency:
Usually referred to as a component of the external quantum efficiency, which is the product of the extraction efficiency of the internal quantum efficiency of the component with the component. Internal quantum efficiency of the so-called component, in fact, is the electro-optical conversion efficiency of the component itself, and the characteristics of the component itself (such as component materials with defects, impurities), components of the barrier crystal composition and structure related. Component extraction efficiency refers to the photons generated by the internal components after the component itself absorption, refraction, reflection measurable outside the assembly, the actual number of photons. Accordingly, the extraction efficiency factors including the component material itself absorption, the geometry of the component, the component and the refractive index difference of the encapsulating material and the component structure of the scattering characteristics. The product of the extraction efficiency of the internal quantum efficiency of the component with the component, the light emitting effect of the entire assembly, is the component of the external quantum efficiency.
The early component focused on theLED Bulb Light development to improve the internal quantum efficiency, the main method is to improve the barrier crystal quality and change the base crystal structure, so that the energy is not easy to convert into heat, and thus indirectly improve the luminous efficiency of the LED, thereby obtaining about 70% of theory internal quantum efficiency, but the internal quantum efficiency is almost close to the theoretical limit. In such a situation is impossible to improve the total light quantity of the components alone can improve the internal quantum efficiency of the assembly, and therefore to improve the assembly of the extraction efficiency will become an important research topic. The current methods are: grain shape change - the TIP structure, surface roughening.
Electrical Characteristics:
Current-controlled devices, load characteristics similar to the UI curve of the PN junction, the forward pass voltage very small changes can cause large variations of the forward current (index level), a small reverse leakage current, reverse breakdown voltage. In actual use, should be selected. LED forward voltage with temperature rise smaller, has a negative temperature coefficient. LED power consumption, in part into light energy, which is what we need. The rest is converted into heat, so that the junction temperature rise. The heat (power) can be expressed as.
Optical characteristics:
LED is the half width of the monochromatic light, the semiconductor energy gap decreases with increasing temperature, and therefore its emission peak wavelength increases with increasing temperature, i.e. the spectral red-shift temperature coefficient of +2 to 3A/.LED luminous brightness L forward current approximate proportional: K is the scale factor. Current increases, the brightness also increases approximation. In addition, the emission luminance on the ambient temperature when the ambient temperature is high, the composite efficiency, luminous intensity decreases.
Thermal characteristics:
Small current, LED temperature is not obvious. If the ambient temperature is high, the dominant wavelength of the LED will redshift, brightness will decrease luminous uniformity, consistency variation. Lattice, the temperature rise of the large display LED reliability, stability, a more significant impact. Thermal design is critical.
Life:
Work long hours for LED will light failure caused by aging, especially for high-power LEDs, the light fades more serious problem. Measure the life of the LED, just as the end of life LED light damage is not enough, LED life should be under the LED light attenuation percentage, such as 35%, so that more meaningful.
LED fluorescent characteristics
LED fluorescent lamp as the main characteristics of a high quality, durable, energy-saving projection angle adjustment range, 15W of brightness equivalent to ordinary 40W fluorescent lamp, high temperature, moisture-proof and waterproof, leakproof. Voltage: 110V, 220V optional, jacket optional glass or PC material. Ordinary fluorescent lamp.
LED fluorescent light using the latest LED light source technology, digital design, saving up to 70%, 12W LED fluorescent light intensity equivalent to 40W fluorescent tube LED fluorescent lamp life 10 times more than ordinary lamp, virtually maintenance free, no always replace the lamp, ballast, starter. Green semiconductor light source, light and soft, pure spectrum, is conducive to the user's eyesight and physical health. 6000K cool white light gives a visual feeling of cool, the illumination differences humane, but also help to focus and improve efficiency.
1, applicability, adaptability and reliability have improved in the indoor and outdoor harsh environments
2, rich colors: the three primary colors (red, green, blue) display unit cabinet, making the electronic displays showing rich colors, high saturation, high resolution, showing high-frequency dynamic image
3, high brightness: high brightness LEDs, the bright sun distance is still clearly visible
Effect: non-linear correction, the image clearer, stronger sense of hierarchy
Reliability: static scan technology and module design, higher reliability and stability
6 Diversified display modes: Supports a variety of display modes.
Ordinary fluorescent characteristics
Ordinary fluorescent light at each end of a filament lamp is filled with a small amount of argon and thin mercury vapor, on the inner wall of the tube is coated with a fluorescent powder, the gas conductive between the two filaments ultraviolet light, the phosphor glows softly of visible light.
The ordinary fluorescent characteristics: a high voltage is required when the lamp begins to ignite only normal light allowed to pass through a small current when the voltage across the lamp is lower than the power supply voltage.
Ordinary fluorescent tubes with both ends of the filament, the inner wall of the glass tube coated with a thin uniform layer of phosphor, filled with a small amount of inert gas is pumped into the tube 10-3-10-4 mm Hg vacuum degree, also inject a small amount of liquid mercury. The inductive ballast is a core inductor coil, the inductive nature when the coil current changes in the coil will cause the change of the magnetic flux, thereby generating an induced electromotive force, its direction and the current in the opposite direction, thereby hampering with the current changes.
Starter from the circuit in switching action by a neon gas discharge tube with a capacitor connected in parallel, the role of the capacitor and ballast for the elimination of electromagnetic interference on the power supply and Zhen Soup loop is formed, to increase the start pulse voltage amplitude . The discharge tube an electrode composed of a bimetal sheet, the use of neon bulb discharge heating the bimetal current mutations, caused by the inductive ballast and generates a high voltage pulse is applied across the lamp when the opening and shutting.
When ordinary fluorescent access circuit, the starter began between two electrodes glow discharge, so that the the bimetal thermal expansion of the pole contactors with static contact, so the power supply, ballast, filament and starter form a closed loop, the current filament preheat, when the heating time of 1-3 seconds after the glow discharge between two electrodes QiHuiQi off, disconnected electrode with the stationary contact and along the bimetal cooling, when the two electrodes disconnect The instantaneous current in the circuit is suddenly disappear, so ballast generates a high voltage pulse, it is superimposed with the power to add to both ends of the tube, an inert gas ionization caused by the arc discharge within the lamp, in the normal light emitting process, the self-inductance of the ballast also plays the role of the current stabilizing circuit.
Characteristics of LED fluorescent properties with ordinary fluorescent property features contrast concluded:
LED fluorescent and fluorescent have the following advantages:
Energy saving, long life, good applicability, due to the small size of the single LED, can be made into any shape, short response time, environmental protection, non-hazardous metal waste easier to recycle, colorful, light color pure, narrow spectral range and through red, green and blue color mixing colorful or white.
LED fluorescent lamps and fluorescent LED fluorescent lamp has the following disadvantages: expensive, generally do light efficiency and theoretical light efficiency, there is a big gap, can do life and theory of life, there is a big gap. Or have a certain amount of heat,ETL T5 LED Tube the light fades can be greatly reduced.
Advantages:
1, green lighting, protect the earth
Traditional fluorescent lamp contains large amounts of mercury vapor, broken mercury vapor will evaporate into the atmosphere. LED fluorescent do not use mercury, and LED products do not contain lead, play a protective effect on the environment. The LED fluorescent recognized green lighting in the twenty-first century.
2, efficient conversion, reduce the heat
Traditional lamps will produce a lot of heat, LED lamps, all the energy is converted to light energy, will not cause energy waste. And file clothing does not produce a fading phenomenon.
3, quiet and comfortable, no noise
LED lamps do not produce noise, a good choice for the use of sophisticated electronic equipment occasions. Suitable for the occasion of the library, office and the like.
4, soft light, protect your eyes
Traditional fluorescent lamp use AC, it will have 100-120 times per second strobe. LED lamps directly convert AC to DC, no flicker, protect your eyes.
5, no UV, no mosquitoes
LED lamps do not produce ultraviolet light, it will not like traditional lamps, there are a lot of mosquitoes around the light source side. The interior will become more clean and sanitary and clean.
6, the voltage adjustable 80V-245V
The traditional fluorescent lamp is lighted by high voltage rectifier release, you can not light when the voltage is lowered. LED lamps can be lit within a certain range of voltage, also adjust the brightness.
7, energy saving, longer life
LED fluorescent lamp power consumption is less than one-third of traditional fluorescent lamp life is 10 times that of the traditional fluorescent, long-term use without having to replace, reduce labor costs. More suitable for the occasion difficult to replace.
8, robust, secure, long-term use
LED light itself is epoxy resin instead of conventional glass, more robust, secure, and even hit the floor LED is not easily damaged, can safely use.
9, compared with ordinary fluorescent lamp, LED fluorescent lamp without ballast, no starter, no flicker.
10, maintenance-free, frequent switching does not cause any damage.
11, safe and stable quality can withstand 4kV high voltage low heat dissipation can operate at low temperature -30 ° C high temperature 55 ° C.
12, will have no effect on the surrounding environment. No ultraviolet and infrared, no hazardous materials such as mercury, eye protection, and no noise.
13, anti-vibration, easy to transport.
Material composition and appearance
1, LED fluorescent lamp super bright power LED, high light transmittance PC cover, aluminum heat and power is.
LED fluorescent light straw hat head and two models of SMD LED beads.
Common 3528,5050,1 W high-power SMD LED beads
3, LED fluorescent shell in two ways:
1) transparent PC shell, high light, you can see the inside of the lamp beads;
2) translucent frosted shell, revealing light softer.
4, LED fluorescent lamp built-in power supply, working voltage is wide voltage from 85V to 265V can be used.
5, LED fluorescent lamp can be made into red, yellow, blue, green, white, warm white color.
Basic Specifications
T5: LEDT5 Lamp Specifications
T8: T8 part of the specification
Scope:
Offices, factories, LED Candle Lampshopping malls, schools, home and other indoor lighting.