Sign & Digital Graphics

The 2015 LED & EMC Report

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in Europe—that signs were being built even shallower. According to Michael Bluhm, North American sales manager for SloanLED, it's not uncommon for European signs to be 50mm (2") deep as those manufacturers were reducing their cost of aluminum used in the return sec- tion of the sign. "Engineers at SloanLED were tasked with spreading out the light while elimi- nating 'hot spots' on the sign face," Bluhm says. "Their solution was to mount the LEDs on a 70 degree angle to the face spreading the light out and not up. They mounted three LEDs in a circular pat- tern to allow for even illumination on the face. This solution has allowed the builder to work with shallower depths and also increase the distance between rows of product in conventional five- inch-deep letters. New Class of LED As the market for channel letter sig- nage trends toward shallower depths, the market has demanded a new class of LED. To address this need AgiLight released the PRO 160 and the PRO MINI B6 LED modules—two products that are optimized for shallower applications. The versatile PRO 160 is capable of 16" stroke coverage at deeper and stan- dard depths, and performs well at two- inch depths where it's capable of six-inch stroke coverage. The secret is in the PRO 160's innovative B1 optic, which is The challenges involved in illumi- nating a shallow depth channel let- ter are numerous. Manufacturers are finding products that address the issues. (Image courtesy of Principal LED) designed to distribute light as an even spread, rather than as a straightforward beam or hotspot. The result is a bright, broad output that performs well in shal- lower depths. The PRO MINI B6 takes this concept even further and adapts it to thin stroke applications at even shallower depths. In strokes as narrow as 1.5", this module has proven success at a 1.75" depth without hot spotting or uniformity problems. Along with product features, including a 50,000-hour L70 lifetime, operating temperatures from -40°C to +60°C, and IP68 durability, the products allow sign designers to go as narrow and shallow as they want. Wider Spacing for Shallow-Depth Modules T D 1 and T D 3, the new products from US LED, are designed not only for shallow depth but also great flexibility. One of the major problems with shallow applications in the past is the over popu- lating that it takes to create even lighting. The new TD modules can be mounted three inches from the face and still have eight-inch spacing between rows with even lighting. The flexibility continues when you move the mods further from the face increasing spacing from row to row up to 24" apart at a 12" depth. This gives you the ability to create even lighting in shallow depths using less product keep- ing your project and shop efficient and effective. At 240 lumens for TD1 and 360 lumens for the TD3 with an IP66 rating, they are ready for any signage challenge. Conclusion Ultimately, signage will continue to evolve and change presenting new chal- lenges to manufactures and sign com- panies. Shallow-depth signage looks primed to become the new standard for the industry moving forward. Armed with these new tools your company will be ready to take on the challenge of shal- low signage improving the quality and performance for your customers. SDG Manufacturers are developing thinner LED modules with special lenses and optics to diffuse light evenly in shallow- depth applications. Shown here are the TD3 and TD1 modules from US LED. (Images courtesy of US LED)

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