Enjoy the Advantages of Outdoor LED Lighting

December 19, 2014 by Sarah Longfellow

outdoor lighting

outdoor led lighting

Quality outdoor LED lighting saves energy and improves lighting quality. A light-emitting diode (LED) is a two-lead semiconductor light source. It is a basic PN-junction diode, which emits light when activated. When a fitting voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.  Below I would focus on the advantages of LED with emphasis on outdoor LED lighting.
•    Efficiency: LEDs emit more lumens per watt than incandescent light bulbs.
•    Color: LEDs can emit light of an intended color without using any color filters as traditional lighting methods need. This is more efficient and can lower initial costs.
•    Size: LEDs can be very small (smaller than 2 mm2) and are easily attached to printed circuit boards.
•    On/Off time: LEDs light up very quickly. A typical red indicator LED will achieve full brightness in under a microsecond. LEDs used in communications devices can have even faster response times.
•    Cycling: LEDs are ideal for uses subject to frequent on-off cycling, unlike fluorescent lamps that fail faster when cycled often.
•    Dimming: LEDs can very easily be dimmed either by pulse-width modulation or lowering the forward current. This pulse-width modulation is why LED lights viewed on camera, particularly headlights on cars, appear to be flashing or flickering. This is a type of stroboscopic effect.
outdoor led lighting•    Cool light: In contrast to most light sources, LEDs radiate very little heat in the form of infra red that can cause damage to sensitive objects or fabrics. Wasted energy is dispersed as heat through the base of the LED.
•    Slow failure: LEDs mostly fail by dimming over time, rather than the abrupt failure of incandescent bulbs.
•    Lifetime: LEDs can have a relatively long useful life. One report estimates 35,000 to 50,000 hours of useful life, though time to complete failure may be longer. Fluorescent tubes typically are rated at about 10,000 to 15,000 hours, depending partly on the conditions of use, and incandescent light bulbs at 1,000 to 2,000 hours. Several department of energy demonstrations have shown that reduced maintenance costs from this extended lifetime, rather than energy savings, is the primary factor in determining the payback period for an LED product.
•    Shock resistance: LEDs, being solid-state components, are difficult to damage with external shock, unlike fluorescent and incandescent bulbs, which are fragile.
•    Focus: The solid package of the LED can be designed to focus its light. Incandescent and fluorescent sources often require an external reflector to collect light and direct it in a usable manner. For larger LED packages total internal reflection (TIR) lenses are often used to the same effect. However, when large quantities of light are needed many light sources are usually deployed, which are difficult to focus or collimate towards the same target.
LED lights are the new rock stars of the lighting world. Some kinds of outdoor LED lighting can be used to light up your deck, porch and yard. In addition to these smaller places, they can also be used in large places, such as the football stadiums and parking lots.