In recent years, LED wall washer has been widely used in various places, such as the wall lighting of company and corporate buildings, the lighting of government buildings, the wall lighting of historical buildings, entertainment venues, etc.; the range involved is also increasing Wider.

1. The basic parameters of high-power LED wall washer

LED wall washer and guardrail tube have many similarities, let us take the LED wall washer of Foshan Verac Technology Co., Ltd. as an example to introduce its parameters:

1. Voltage

The voltage of the LED wall washer can be subdivided into: 220V, 110V, 36V, 24V, 12V, so we pay attention to the corresponding voltage when choosing the power supply.

2. Working temperature

Because the wall washer is usually used more outdoors, this parameter is more important, and the temperature requirements are relatively high. Generally, the outdoor temperature we require can work at -40℃+60℃. However, the wall washer is made of an aluminum shell with better heat dissipation, so the general wall washer can meet the requirements.

3. LED lamp beads number

The number of LEDs of the universal wall washer is:

9/300mm,

18/600mm,

27/900mm,

36/1000mm,

36/1200mm.

4. Protection level

This is an important parameter of the wall washer, and it is also an important indicator that affects the quality of the current guardrail tube. We have to make strict requirements. When we use it outdoors, it is best to require the waterproof level to be above IP65. It is also required to have relevant pressure resistance, chipping resistance, high and low temperature resistance, flame resistance, impact resistance and aging grade IP65, 6 means completely preventing dust from entering; 5 means: washing with water without any harm.

5. Control method

There are currently two control methods for LED wall washer: internal control and external control. Internal control means that there is no external controller. The designer designs the control system in the wall lamp, and the degree of effect cannot be changed. The external control is an external controller, and its effect can be changed by adjusting the buttons of the main control. Usually in large-scale projects, customers can change the effect by themselves. We all use external control solutions. There are also many wall washers that directly support DMX512 control systems.

6. Color specifications

2 segments, 6 segments, 4 segments, 8 segments full color, colorful colors, red, yellow, green, blue, purple, white and other colors.

7. Light-emitting angle

The light-emitting angle is generally narrow (about 20 degrees), medium (about 50 degrees), and wide (about 120 degrees). At present, the farthest effective projection distance of high-power led wall washer (narrow angle) is 20- 50 meters.

8. Mirror

The glass reflective lens has a light transmittance of 98-98%, is not easy to fog, and can resist UV radiation.

9. Light source

Generally, 1W and 3W LEDs are used as light sources, but due to the immature technology, it is more common to use 1W in the market, because 3W generates a large amount of heat, and the light decays faster when the heat is deleted. The above parameters must be considered when we choose the LED high-power wall washer. In order to distribute the light emitted by the LED tube for the second time to reduce the light loss and make the illuminance better, each LED tube of the wall washer will have a High-efficiency lens made of PMMA.

Second, the working principle of LED wall washer

The LED wall washer is relatively large in size and better in terms of heat dissipation, so the difficulty in design is greatly reduced, but in practical applications, it will also appear that the constant current drive is not very good, and there are many damages. So how to make the wall washer work better, the focus is on the control and drive aspects, let us learn together.

1. LED constant current device

Regarding LED high-power products, we will all mention constant current drive. What is LED constant current drive? Regardless of the size of the load, the circuit that keeps the current of the LED constant is called LED constant current drive. If the wall washer uses a 1W LED, we usually use a 350MA LED constant current drive. The purpose of using the LED constant current drive is to improve the life and light attenuation of the LED. The choice of constant current source is based on its efficiency and stability. I try my best to choose a constant current source with high efficiency, which can reduce energy loss and temperature.

2. The application of led wall washer

Let us analyze the main applications and achievable effects of the wall washer. LED wall washer is controlled by a built-in microchip. In small-scale engineering applications, it can be used without a controller and can achieve gradation, jump, and color. Dynamic effects such as blinking, random blinking, and gradual alternation can also be achieved through DMX control to achieve chasing, scanning and other effects.

3. Application place

Application places: single building, exterior wall lighting of historical buildings. Inside the building, the light is transmitted through the outside lighting, and the indoor local lighting. Green landscape lighting.

LED wall washer and billboard lighting. Lighting for specialized facilities such as medical treatment and culture. Atmosphere lighting in bars, dance halls and other entertainment venues.

4. The trend of LED wall washer

In recent years, LED wall washer has been widely used in various places, such as the wall lighting of company and corporate buildings, the lighting of government buildings, the wall lighting of historical buildings, entertainment venues, etc.; the range involved is also increasing The wider, from the original indoor to the outdoor, from the original partial lighting to the current overall lighting, is the level of improvement and development. With the increasing progress of the times, now Shenzhen Qimingda Optoelectronics Co., Ltd. LED wall washer lights It has been heavily invested in lighting projects in various fields. In the next few years, LED wall washers will develop into an indispensable part of lighting projects.