The Streamliner in Düsseldorf is Germany's largest DooH screen.
As LED specialists, we integrated the screen behind the façade of Kö-Bogen 2 using a special construction.
Our technical tricks
It is currently the largest DooH space in Germany: the elongated LED wall “Streamliner”, which went into operation last year. It is located behind the glass façade of Kö-Bogen 2, a 600 million euro construction project on Düsseldorf’s central shopping street. This integration into the exterior architecture makes the screen – apart from its size – something special in the German DooH landscape. This was made possible by a special LED design from us. invidis took a look behind the screen with our founder Thomas Tennagels.
The challenge of LED cooling
The Streamliner stretches almost 70 meters across one side of the Kö-Bogen 2 shopping and office center and, at a height of more than 4 meters, has a screen area of around 300 square meters. As it is not applied directly to the outermost building envelope, the challenge was not so much weather resistance as efficient cooling of the system.
The LED wall is installed in a closed room – there is not much space either to the glass façade or to the rear of the panels. Nevertheless, the LEDs have to contend with direct sunlight. We built a special ventilation system to allow the heat from the enormous surface area to escape. This is installed along the entire length of the bottom edge of the screen and allows air to circulate through the room from below.
We also integrated light sensors into the design, which are connected to the controlling system and thus trigger automatic brightness control of the screen. In conjunction with a PLC control system, the software on the media server can also be used to monitor the temperature and trigger a shutdown in an emergency. The entire system is also equipped with camera surveillance.
Made to measure on running rails
The second challenge lay in the installation behind the façade: the media façade was only integrated when the building was already finished and therefore had to adapt to the architecture. One requirement was that the glass surface must remain accessible for cleaning work. We therefore placed the LED panels on track elements that can be slid away from the wall individually. The top row of panels is also made to measure, as the height could not be achieved with standard sizes.
Another special feature of the Streamliner is its orientation: thanks to its length, it catches the attention of pedestrians on Gustaf-Gründgens-Platz as well as that of drivers entering the underground parking garage below. The advertising content is specially synchronized with the traffic light phases.
The Streamliner as an advertising and art platform
Since its launch, the screen has already been booked by a number of well-known brands for special advertising, including BMW, Sephora and Vodafone. Blowup Media and Outsite Media are responsible for marketing. Campaigns with a 3D effect have also been seen on the special format. But not only brands have used the space so far: in May, a digital art installation by Tim Berresheim, who was simultaneously hosting the “New Old World” exhibition at the NRW-Forum in Düsseldorf, ran here.
Here is a recording of the art installation:
Digital from the front, green from behind
Incidentally, Kö-Bogen 2 currently holds a record not only because of the LED surface – if you walk around the building, you can see what is currently Europe’s largest vertical garden. The building is part of a pilot project that was developed with the support of Beuth University of Applied Sciences Berlin, among others. So while one side is digitally framed, the other side is adorned with 30,000 hornbeam hedge plants.
