LED fluorescent lamp LED fluorescent lamp is super bright LED white light as the light source and the shell is acrylic / aluminum alloy. Housing available PC made from the high temperature of 135 degrees. LED fluorescent light with traditional fluorescent Dimensions caliber, length 60cm and 120cm, 150cm three, the power of 10W, 16W, 20W, 20W traditional fluorescent lamp (Magnetic Ballast) the actual power consumption is about 53W 40W traditional fluorescent lamp (Magnetic Ballast) the actual power consumption is about 68W.
LED Flood light 10W fluorescent lamp T8
10WLED fluorescent brightness than traditional 40W fluorescent is brighter and brighter 16WLED fluorescent than traditional 64W fluorescent, LED fluorescent lamp brightness is especially softer and more make it easy to access grant. The useful life of 50K-80K hours power supply voltage is AC85V-260V (AC), without starter and ballast, quick start, low power, no flicker, not easy to visual fatigue. It is not only super energy saving is more environmentally friendly. National green energy-efficient lighting project focuses on the development of one of the products is to replace the traditional fluorescent product.
LED fluorescent lamp installation is relatively simple, it points to the power supply built-in or external power supply built-in LED fluorescent installation, remove the original fluorescent put on LED fluorescent lamp, and ballast and starter remove on 220V AC mains directly added to both ends of the LED fluorescent lamp can be. Power an external LED fluorescent lamps in general with special lighthouse, you can use to replace the original.
LED Spotlight 30W fluorescent energy-saving up to 80%, life expectancy of more than 10 times the ordinary lamp, almost maintenance-free, does not exist must be frequently changed the lamp, ballast, starter, about six months down the cost savings can be exchange costs. Green-based semiconductor light source, light and soft, pure spectrum, vision care and physical health of workers, 6000K cool white light and gives a visual cool feel, help to focus and improve efficiency.
The PN junction of the terminal voltage to a certain barrier, plus the forward bias voltage times base decline, the District P and N region of the majority carrier diffusion to the other side. Electron mobility is much larger than the hole mobility, so a large number of electron diffusion to the P region, constitute the P region minority carrier injection. These electrons and valence band holes compound, the compound when the energy release in the form of light energy to go out. This is the PN junction light-emitting principle.
Commonly referred to as the external quantum efficiency of the components, the components of the internal quantum efficiency and component extraction efficiency of the product. The internal quantum efficiency of the so-called components, in fact, is the component of the electro-optical conversion efficiency, the main characteristics of the component itself (such as component materials with defects, impurities), the components of the barrier crystal composition and structure. Component extraction efficiency refers to the components internally generated photons, the absorption of the component itself, refraction, reflection, the actual measurable components external to the number of photons. Therefore, the factors on the extraction efficiency, including the absorption of the component materials, the geometric structure of the components, components and packaging materials, the refractive index difference and the component structure of the scattering properties. The components of the internal quantum efficiency and component extraction efficiency of the product, the glow of the components, that is, the external quantum efficiency of the components.
Early components of development in improving the internal quantum efficiency, mainly by improving the quality and change of the base crystal base crystal structure, so that electricity is not easy to convert into heat, and thus indirectly to improve the LED Floodlight 80W luminous efficiency, which receive about 70% The theory of internal quantum efficiency, internal quantum efficiency is almost close to the theoretical limit. In such a situation, improve the component's internal quantum efficiency alone is impossible to improve the components of the total amount of light, and therefore improve the extraction efficiency of the components has become an important research topic. The current methods are: the grain shape change - the TIP structure, surface roughening.
The current control device, the UI curve of the load characteristics similar to the PN junction forward voltage of the very small changes can cause large changes of the forward current (index level), the reverse leakage current is very small, the reverse breakdown voltage. In actual use, should be selected. LED forward voltage becomes smaller with increasing temperature, with a negative temperature coefficient. LED power consumption, part of the conversion of light energy, which is what we need. The rest is converted into heat, the junction temperature rise. The heat (power) can be expressed as.
LED provides a lot of monochromatic light of the half-width due to the semiconductor energy gap decreases with increasing temperature, so its emission peak wavelength with increasing temperature and growth, ie, the spectral red shift, the temperature coefficient of +2 ~ 3A/.LED LED brightness L and the forward current is approximately proportional to: K is the scale factor. Current increases, the brightness similar increases. Addition, the brightness and the ambient temperature, ambient temperature is high, the recombination efficiency decreased, the luminous intensity decreases.
Small current, the LED temperature rise is not obvious. If the ambient temperature is high, the dominant wavelength of the LED is red shift, the brightness will drop luminous uniformity, consistency variation. In particular, lattice temperature rise on the big screen LED reliability and stability of the more significant. Therefore, the thermal design is critical.
Long working hours of the led driver 120w failure caused by aging, especially for high-power LED, the light fades the problem is more serious. Measure the life of the LED, the only light damage as the end of the LED life is not enough, it should be a percentage of the LED light attenuation to the provisions of the life of the LED Power Supply, for example, 35%, so that more meaningful.