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Quick development puts signage company on road to success

Techspan, which develops and installs the graphical Variable Message Signs (VMS) on motorways, needed PDD’s expertise to design the next generation of colour LED displays.

Not only do such displays have to comply with stringent Highways Agency specifications for viewing angles, illumination contrast and non-reflectivity, they also have to survive life in the hard shoulder, withstanding storms and snow, bright sunlight and high-speed impacts from flying debris. Moreover, they have to be kept cool in the summer and demisted in winter.

To create the optimal design, we used optical ray tracing, Finite Element Analysis and 3D CAD, made models for optical tests and machined prototype display modules for tests and external approvals.

The novel design comprises an economic, louvered chassis contained within a single moulding that provides the optical paths, mechanical structure and the required heat-flow. The final product withstands pressure cleaning (IP66), impacts up to 20J, 1.5g vibration and shock to 10g. Following external approvals, over 5,000 display modules have been produced and installed.

 


News & Insights

27/07/2017

PDD completes its transition to the 2016 version of ISO13485 for Medical Devices.

PDD has completed its planned transition to the latest version of this rigorous international quality assurance standard for medical devices, building on the success of earlier transitions and successful audits to the FDA 21CFR Part 820 in 2015.

31/03/2016

A rewarding start to the year!

It’s been a great start to 2016. The first quarter is not yet over and already PDD has 3 new prestigious design awards to its name. PDD’s work with the health & personal care brand Swisslux and the Zyliss kitchenware brand has been awarded with Red Dot design awards. This was followed by a German Design Award for the Testo 870 Thermal Imager.

TechspanThe depth of skills offered within PDD, and their wealth of experience, meant that our concept ideas turned into reality faster than anticipated. Coupled with excellent communication between PDD and ourselves, this enabled us to meet demanding deadlines and finish the project to budget.