LED wall washer light parameters

LED wall washer light voltage is 220V, 110V, 24V, 12V, so we should pay attention to the corresponding voltage when selecting a power. Another 18V, 36V, both due to the transformers in the market is relatively less, not easy to find the match transformer, it is generally use 24V or 12V low pressure.

Working temperature:
Because wall washer light is typically used outdoors, so this argument becomes more important, on the temperature requirements are relatively high.
Protection class:
An important parameter for LED wall washer light is also an important indicator of the impact guardrail quality, we want to carry out strict requirements, and we use it for outdoor, IP65 waterproof rating is required. Also requires the relevant pressure resistance, chipping resistance, high temperature, flame, impact of aging grade.
IP 56:
Number 5 represent completely prevent dust entering: wash with water without any harm.

Control:
For LED wall washer light, the currently have two control modes: both internal and external control. Internal control is the controller that does not need to connect externally. The designer install the control system in wall lights inside, the extent of the effect cannot be changed. External control is an external controller; the effect can be adjusted through the master keys and change the effect. Usually in large projects, the customer can require change the effect, we are using external control such programs. There are a lot of wash wall directly support DMX512 control system.

Mirror:
Reflective glass lens, light transmission rate is 98-98%, easy to spray, anti-UV radiation.

Source:
Generally use 1W, 3W LED as the light source, but due to technical immaturity, in 2013 the market is relatively common use 1W, when 3W emit more heat, the light fades is slow.

Size:
The default unit length is 1 m, due to the shell is pulled out from the high temperature aluminum model, it can be customized for length, but width and height cannot change according to customer requirements, unless re-open mode, but the mold is expensive, manufacturers and customers generally do not will adopt re-open mode, except for special circumstances.

LED ceiling light heat dissipation

LED ceiling light use small power LED lamp beads; the arrangement is dispersed, which help dissipate heat. Ceiling structure characteristics is conducive to cooling.

a) Inside air is free flow with no blocking. This is the biggest advantages of LED ceiling light when compared to other fixtures. Sealed without air circulation is very good thermal insulation properties, in turn, a free flow of air is the best heat sink. All the world’s hot objects at last dissipate the heat into the air. because there are a lot of holes in the LED ceiling light, so the ceiling lamp shade, the heat generated by the LED lamp can be passed through the air immediately to go outside.

b) Shade can be good for heat dissipation. We know that the convection and heat radiation is primary to materials and area, whereas the plastic is a good heat radiation effect, and the thickness of the shade is thin, so that the thermal influence of the plastic can be ignored.

c) Large area: according to circular area calculated: S = πr2, or S = π (d / 2) 2, for a 45cm diameter circular LED ceiling light, its bottom area is 1590cm2. Ceiling as usually installed in the room, not too high temperature, so that the empirical data can be used 40cm2 / W, and so can be dispersed to 40W. However, due to the bottom board near the ceiling, is not easy to dissipate heat, so the actual cooling effect of the floor will be a lot worse. Because the shade is curved, and its area is larger than a circular, its installation is downwardly, without any barrier, so the heat radiating effect is better than the bottom.

d) The key question is to make LED lamp beads aluminum plate or PCB copper area large enough.
Experiments show that, for ceiling less than 30W, the ordinary PCB can be a good heat dissipation, and to take advantage of the free circulation of air. Both sides of the PCB take the heat away, so it do not need to put aluminum plate or PCB thermal plastic close to the floor through to the heat, but should leave the backplane PCB booster 5mm, so that air circulation.

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LED down light features and development trend

LED down light is a directional lighting, only its opposite to the light, are converging beam angle, the light is more concentrated, with intense chiaroscuro. Its lighting can highlight the illuminated objects, with high lumens, it also bring out the quiet atmosphere. LED down light is mainly achieved by lighting emitting diode, LED life is depends mainly on the solid portion source and the driving, currently, LED down lights life has reached more than 50,000 hours, with continuous research and widespread use of LED technology, the driver and cooling is also essential to achieve relatively good condition, compared with ordinary halogen down lights, high-quality LED down lights commercially life is more than 50,000 hours.

Feature
LED down light features: maintain the overall architectural unity and perfect, and does not destroy the lighting setup, light are hidden in architectural interior, light is not exposed, no glare, soft visual effects, evenly.

Energy conservation: at the same brightness, the power consumption is 1/4 as ordinary energy-saving lamps.

Environmentally friendly: no mercury and other harmful substances, no environmental pollution. (Experts pointed out: mercury contained by one fluorescent lamp can pollute 180 tons of water).

Economy: because saving electricity, costs can be reduced; lighting costs can be recoverable after a year and a half. A family can save tens of dollars electricity cost per month.

Low Carbon: the saving on electricity is equivalent to the reduction in carbon emissions.

Long Life: LED lamp life is 50,000 hours, if use six hours a day, life expectancy is 20 years.

Advantage
1, energy: white LED energy consumption is only 1/10 of that incandescent lamp, 2/5 of energy-saving lamps; longevity: LED theoretical life is over 100,000 hours, for ordinary home lighting, it can be described as “once and for all.”

2, can work at high speed: energy-saving lamps filament will be black soon damaged if you frequently turn on or off.

3, solid package, are cold-light source type. So it is very easy to transport and install, can be installed in any micro-and closed equipment, not afraid of vibration, the main consideration is the heat dissipation.

4, LED lighting technology is in the rapid progressing, its luminous efficiency is astounding breakthrough, prices have also been reduced. A white LED lamps is rapidly coming into the home.

5, environmental protection, LED down light contains no mercury (Hg) and other substances harmful to the environment, without causing damage to the environment. LED lamp assembly parts can be very easy disassembly. LED does not contain infrared, ultraviolet, so the insects do not move.

6, fast response: LED response fast, completely eliminates the long response process shortcomings of traditional high pressure sodium lamp.

Summary: It is clear that as long as the LED lighting cost reduced with the LED lighting technology continuous improvement, energy-saving lamps and incandescent lamps will inevitably be replaced by LED lamps. Current state emphasis on the lighting energy and environmental issues, has been vigorously promoting the use of LED lamps. Especially government reform streetlight project is the first LED street lights, which has specified point out the LED lamps replace energy-saving lamps, incandescent lamps momentum.