LED Lamp News

A light-emitting-diode lamp is a solid-state lamp that uses light-emitting diodes (LEDs) as the source of light. Since the light output of individual light-emitting diodes is small compared to incandescent and compact fluorescent lamps, multiple diodes are often used together. LED lamps can be made interchangeable or retrofitted with other types. LED components use DC so LED lamps must also include internal circuits to operate from standard AC voltage. LEDs are damaged by being run at elevated temperatures, therefore LED lamps typically include heat management elements such as heat sinks and cooling fins. LED lamps offer long service life and high energy efficiency, but initial costs are higher than those of fluorescent lamps.

General purpose lighting requires white light. LEDs emit light in a very small band of wavelengths, producing strongly colored light. The color is characteristic of the energy bandgap of the semiconductor material used to make the LED. To create white light from LEDs requires either mixing light from red, green, and blue LEDs, or using a phosphor to convert some of the light to other colors.

The first method (RGB-LEDs) uses multiple LED chips each emitting a different wavelength in close proximity to create the broad white light spectrum. The advantage of this method is that one can adjust the intensities of each LED to “tune” the character of the light emitted. The major disadvantage is the high manufacturing cost, which is problematic for commercial success.

The second method, phosphor converted LEDs (pcLEDs) uses a single short wavelength LED (usually blue or ultraviolet) in combination with a phosphor, which absorbs a portion of the blue light and emits a broader spectrum of white light. (The mechanism is similar to the way a fluorescent lamp produces white light from a UV-illuminated phosphor.) The major advantage here is the low production cost, and high CRI (color rendering index), while the disadvantage is the inability to dynamically change the character of the light and the fact that phosphor conversion reduces the efficiency of the device. The low cost and adequate performance makes it the most widely used technology for general lighting today.

To be useful for illumination for home- or work spaces, a number of LEDs must be placed close together in a lamp to combine their illuminating effects. This is because individual LEDs produces only a fraction of the light of traditional light sources. When using the color-mixing method, a uniform color distribution can be difficult to achieve while the arrangement of white LEDs is not critical for color balance. Furthermore, degradation of different LEDs at various times in a color-mixed lamp can lead to an uneven color output. LED lamps usually consist of clusters of LEDs in a housing with both driver electronics, a heat sink and optics.

LED lighting products in early produced low luminous efficiency, whose light intensity usually only reaches a few to dozens of mcd, applied in indoor situations, home appliances, instrumentation, communications equipment, computers and toys the application. LED Lighting Source is  now immediate objective to replace incandescent and fluorescent lamps,and  this alternative trend has started in  local applications. Japan, is planning to replace incandescent light-emitting diode project for energy conservation, in the first five years ,the budget is 50 billion yen, if  the incandescent and fluorescent lamp  are replaced with half of  LED, annual savings of 6 billion liters of crude oil equivalent of energy, equivalent to 5 1.35 × 106kW generating capacity of nuclear power plants and reduce carbon dioxide and other greenhouse gases,and improve people’s lives and living conditions. China has invested 5 billion in 2004 to develop energy-saving environmental protection, semiconductor lighting program.

Power LED Lamp

This gadget can be used as LED lamp, and fan as well. If there is no air condition or it is not too hot enough to turn on the device, this small gadget is much suitable for you to save electircity. It is driven by USB. The LED lamp and fan are controled by different switches, which enable you to use only one of them. The metal rod can be bended in any way to adjust the gadget fit for your use.

Both LED lamp and fan work much well. The former is energy-saving. After three minutes connecting USB to the port, the LEd lamp could get to the best brightness, and it will not flash and be hot. The wind from the fan is gentle and with no boring noise. For its flexibility, you can fold it in a small size, which is convenient to take along.

Check out the Crystal snap-together LED lamp that was the creation of Taiwanese company qisdesign. Each of these LED lights is but a glowing icosahedron complete with magnets in its skin that enables it to hook up to other crystals, obviously with opposing polar ends. Guess depending on your budget, you can now build your very own LED lamp according to the size of your choice – no idea on how environmentally friendly this will be though.

Why do we need to sound control LED lamp?Because there are times that as lazy as it makes us sound, we just don’t want to go across the room to turn on or off a light. It’s moments like that in which people start thinking up strange inventions to solve the issue. Which is probably how this voice controlled lamp came into existance. Now instead of walking to shut off the small LED lamp, you can shut it off from up to 10 meters away.That is sound control LED lamp,it can let you don’t get up while you turn off the LED lamp.

Ideal for outdoor lighting, parks, parking areas and footpaths this revolutionary LED lamp simply replaces existing bulbs. The ten year life of the LED lamp allows users to replace sodium lamp bulbs as they burn out and forget about them for a decade.

LEDs are solid-state semiconductor devices that convert electrical energy directly into light. Thermal sources of light such as flames and incandescent filaments emit light when heated, either by chemical reaction (flames) or electrical heating (filament lamps). LED “cold” generation of light leads to high efficacy because most of the energy radiates within the visible spectrum.

Other common high efficiency light sources, such as fluorescent lamps and electro luminescent devices, also produce light without much thermal radiation outside the visible spectrum. Because LEDs are solid-state devices, they can be extremely small and durable; they also provide longer lamp life than other sources.

Light is generated inside the chip, a solid crystal material, when current flows across the junctions of different material compositions.

An LED consists of two elements of processed material called P-type semiconductors and N-type semiconductors. These two elements are placed in direct contact, forming a region called the P-N junction. The composition of the different materials determines the wavelength and therefore the colour of light generated LED resembles most other diode types, but there are important differences. The LED has a transparent package, allowing visible or IR energy to pass through. Also, the LED has a large PN-junction area whose shape is tailored to the application. The device shown in Figure 1 is an AlGaInP LED because the semiconductor layers are aluminum (Al), gallium (Ga), indium (In), and phosphate (P).

Main LED materials

The main semiconductor materials used to manufacture LEDs are:

*Indium gallium nitride (InGaN): blue, green and ultraviolet high-brightness LEDs

*Aluminum gallium indium phosphide (AlGaInP): yellow, orange and red high-brightness LEDs

*Aluminum gallium arsenide (AlGaAs): red and infrared LEDs

*Gallium phosphide (GaP): yellow and green LEDs

LED Light Direct is your online LED Products superstore. We carry the leading LED Light from the leading LED Light manufacturers, including LED Fluorescent Lamp, LED Ceiling Lights, LED Tube, LED Display. LED Light Direct also carries a complete selection of LED Display (Indoor LED Display,Outdoor LED Display) and LED Light accessories, including LED Light Accessories, LED Street Lamp, LED Neon Light, LED Tube, LED Tube Light, LED Flashlight, High Power Flashlight, Aluminum LED Flashlight, Solar Flashlight,Power LED PAR Lamp, LED Lamp and more.

If you’re a real tight-wad, here’s an LED lamp that will make you smile. It’s an LED lamp that is powered by your phone line. If you’re scratching your head in confusion, you must not know that phone lines carry a low level of electricity. That’s why you’re analog phones work even when the power goes out. This 8 LED lamp takes advantage of that fact by including an RJ11 plug that you can connect to any standard phone jack.

LED Light Direct is your online LED Products superstore. We carry the leading LED Light from the leading LED Light manufacturers, including LED Fluorescent Lamp, LED Ceiling Lights, LED Tube, LED Display. LED Light Direct also carries a complete selection of LED Display (Indoor LED Display,Outdoor LED Display) and LED Light accessories, including LED Light Accessories, LED Street Lamp, LED Neon Light, LED Tube, LED Tube Light, LED Flashlight, High Power Flashlight, Aluminum LED Flashlight, Solar Flashlight,Power LED PAR Lamp, LED Lamp and more.

This all-weather luminaire offers an extended LED lamp life, maintenance-free operation, long-lasting durability, major energy savings, and reduced light pollution, all translating into reliability, ecological sustainability and sizable budget savings. Standard wall-pack luminaires are notorious for reduced control of light output because of their poor optical configuration, contributing to light pollution, wasted uplight and a shallow light projection. The high-power LED lamp Wall-Pak’s design achieves a much more efficient illumination coverage — The optical center of the lens is aligned with the lamp source for an even symmetrical distribution of light that redirects light to minimize glare. It effectively sends a wide-focused circular beam of around 85 degrees that spreads 157 degrees vertically and 38 degrees horizontally.
LED Light Direct is your online LED Products superstore. We carry the leading LED Light from the leading LED Light manufacturers, including LED Fluorescent Lamp, LED Ceiling Lights, LED Tube, LED Display. LED Light Direct also carries a complete selection of LED Display (Indoor LED Display,Outdoor LED Display) and LED Light accessories, including LED Light Accessories, LED Street Lamp, LED Neon Light, LED Tube, LED Tube Light, LED Flashlight, High Power Flashlight, Aluminum LED Flashlight, Solar Flashlight,Power LED PAR Lamp, LED Lamp and more.

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