Analysis of LED wall washer of the technical principles

In recent years, LED wall washer has been widely applied to various places, such as corporate building wall lighting, government building lighting, historical buildings of the wall lighting, entertainment, etc .; also involved in the scope of the more The more wide, Cheung Kwong Optoelectronics to analyze the LED wall washer to analyze the technical principles
First, the basic parameters of high-power LED wall washer LED wall washer and guardrail tube has a lot of the same point, let us take the Qin LED wall washer as an example to introduce its parameters:
1. Voltage
LED wall washer voltage can be divided into: 220V, 110V, 36V, 24V, 12V, several, so we choose the power when the attention of the corresponding voltage.
2. Operating temperature
Because the wall is usually used in outdoor lights are more, so this parameter is more important, the temperature requirements are relatively high, the general situation we require outdoor temperature -40 ℃ +60 ℃ can work. But the wall washer with a better heat to do the aluminum shell, so the general requirements of the wall wash lights can meet the requirements.
3.LED lamp beads
The number of LEDs for universal wall was 9 / 300mm, 18 / 600mm, 27 / 900mm, 36 / 1000mm, 36 / 1200mm.
4. Degree of protection
This is an important parameter for wall washer, but also affect the current quality of the important indicators of the tube, we have to stringent requirements, we use in the outdoors, require waterproof rating should be above the IP65 is the best. But also related to the requirements of the pressure, resistance to cracking, high temperature resistance, fire, the impact of aging grade IP65,6 on behalf of completely prevent the dust into; 5 representatives: rinse with water without any harm.
5. Control mode
LED wall washer for the current there are two control methods: internal control and external control of two. Internal control is not an external controller, the designer of the control system designed in the wall inside the wall, the degree of effect can not be changed. External control is an external controller, the effect can be adjusted by the master key to change the effect. Usually in large projects above, the customer can change their own requirements, we are using external control this program. There are also a number of wash walls that directly support the DMX512's control system.
6. Color specifications
2, 6, 4, 8 full color, colorful, red, yellow, green, blue, purple, white and other colors
7. Beam angle
(50 degrees), wide (120 degrees) three, at present, high power led wall washer (narrow angle) of the farthest effective projection distance of 20- 50 meters
8. Mirror
Glass reflective lens, light transmission rate of 98-98%, not easy to spray, can resist UV radiation
9. Light source
Generally use 1W, 3WLED as a light source, but because of immaturity, the current market with 1W more common, because 3W heat, heat loss to do bad bad light faster. The above parameters in our choice of LED high-power wall washer when the parameters must be considered in order to allocate the second LED tube light to reduce the loss of light loss, so that illumination is better, wall lights each LED tube with a PMMA made of high-efficiency lens. I now connect the wallwash lights through the control connection diagram to make it easier to understand.
Second, LED wash wall lamp works
LED wall washer because of the relatively large size, better heat dissipation, so the design also greatly reduces the difficulty, but in practical applications, there will be constant-current drive is not done very well, there are many damage, So how to make the wall to run better, focus on the control and drive, control and drive, let us learn together.
1. LED constant current device
Related to the high-power LED products, we will bring to the constant-current drive, then what is LED constant current drive? No matter the size of the load changes, LED current remains constant circuit called LED constant current drive. If the wall was used inside the 1W LED, we are usually 350MA LED constant current drive, LED constant current drive is designed to improve the life of the led and light failure. Constant current source is good or bad choice is based on its efficiency and stability, I try to choose high efficiency constant current source, which can reduce the energy loss and temperature.
2.led wall washer application
Now let us analyze the main applications of wall washer and the effect can be achieved LED wall washer through the built-in microchip control, in small engineering applications, the controller can be used to achieve the gradient, transition, color Flashing, random blinking, alternating gradients and other dynamic effects, you can also DMX control, to achieve chasing, scanning and other effects.
3. Applications
Single building, the external walls of historic buildings lighting. Inside and outside the building through the lighting, interior lighting. Green landscape lighting
LED wall washer lights billboards. Medical, cultural and other special facilities lighting. Bars, dance halls and other entertainment venues such as lighting
4.LED wall washer trend
In recent years, LED wall washer has been widely applied to various places, such as corporate building wall lighting, government building lighting, historical buildings of the wall lighting, entertainment, etc .; also involved in the scope of the more The more wide, from the original indoor to outdoor, from the original local lighting to the current overall lighting, are the level of improvement and development, with the progress of the times, now on the Qin LED wall washer has been heavily invested in various fields Of the lighting project, the next few years, LED wall washer will become an indispensable part of the lighting project.