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Home > Company > LED Trailer Basics
A mobile LED screen trailer, or mobile LED billboard trailer is a combination of outdoor LED display and light-duty trailer chassis, making LED display more convenient to move. It can be widely used in outdoor live broadcasts, live music, advertising and promotion, sports events, festivals , outdoor television and other applications. The structure of the LED screen trailer includes the trailer chassis, LED display & multimedia system, power supply system, hydraulic lifting and rotating system, and control cabinet box.
The LED Screen trailer chassis is an unpowered vehicle pulled with a trailer hitch ball and trailer wire connector that can be towed by a powered car, pickup or truck. The trailer is designed for carrying LED screen and hydraulic parts.
Generally mobile LED screen trailers range in size from single-axle to double-axle based on the total trailer loading weight. In different countries like Europe and North America, the trailer standard and regulation are different. It is important to build the trailer under the transport regulation of your local country such as DOT in United States and ADR in Australia.
The LED trailer multimedia system includes LED display, control card, speakers, video processor, power amplifier, etc. The trailer mounted LED screen can be divided into indoor use and outdooruse models.
LED Display.The Trailer LED screen can be divided into pixel pitch of P3, P4, P5, P6, P8 and P10 trailer LED screens. Generally, the smaller pixel pitch LED screen will cost more than bigger ones. In addition, there are other factors that affect the quality of trailer LED screen, such as DIP or SMD, IC brand, power supply, control card and so on. These factors will have an important influence on the brightness, refresh rate, contrast, life and power consumption of the trailer LED screen.
Audio & video equipment. The mobile LED screen trailer is also installed with two or four outdoor waterproof speakers, together with the corresponding power amplifier to achieve audio output. The Video processor or a multi-functional box will be also installed to realize the conversion and output of video signals to the trailer LED display screen.
The hydraulic system of the mobile LED screen trailer is mainly used to make the trailer mounted LED screen lift and rotate, or fold and unfold. The strong hydraulic system provides better support for the screen.
Lifting. These hydraulic actions ensure the trailer LED screen can be seen easily in higher position. The mechanical system consists of hydraulic pump station, hydraulic motor, rotary support, lifting guide post and hydraulic cylinder.
Rotating. The slewing support includes a slewing gear and a tray, so that the trailer LED screen and the lifting guide post can rotate 360 degrees. The LED screen is installed on the guide post with an hydraulic cylinder, which can conduct the lifting and landing actions.
Remote control. The operation button of the hydraulic part is installed in the control cabinet box, and the lifting and rotating actions of the LED screen can be controlled by the buttons or the remote controller.
The mobile LED trailer has a variety of power supply methods. Based on the voltage standards of different countries, the LED screen trailer can use 110V or 220V power supply. The LED screen trailer can also be powered by the on-board generator.
It should be noted that the generator must be silent and meet the maximum power requirements of the whole trailer electric power consumption such as trailer mounted LED screens, speakers, amplifiers, hydraulic system motor.
If the LED screen is single color, you can also power it with solar panel energy and batteries. This is an advantage because the majority of outdoor trailer mounted LED screens have a large power consumption so solar energy and battery power can not meet the needs of LED billboard trailer.
The LED Trailer control box is generally installed at the side or on top of the trailer chassis. It is mainly used to install multimedia equipment such as video processor and power amplifier. The control box also integrates electric cable installation, circuit control system and the hydraulic operation system. There is strip LED lighting for indoor lighting and also an additional toolbox to store the tools for daily use.
With the control cabinet, you can operate the electricity supply of the trailer, lift or rotate the LED screen, and control the audio and video play on the trailer LED display. The control cabinet is designed to be fully waterproof and shockproof.
There are synchronous control and asynchronous control to display videos, animations, pictures, texts on the trailer LED display. Both of these two control systems untilise hardware and software options from the trailer and LED screen.
The synchronization system displays the content on the trailer LED screen from the content on the control computer monitor in real time and synchronously. Synchronous control requires a computer or laptop because it doesn’t have storage memory.
The Asynchronous display means you can use your computer, laptop, mobile phone, tablet, SD card, USB flash drive to send the edited contents in advance to the control card of the trailer LED screen. After the control card (with memory storage) receives the content , it will display the edited contents in order.
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