Design Concept
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LED perforated letters (also known as exposed pixel bead illuminated letters) adopt the core design principle of “high visibility, robust durability and all-weather adaptability”. By densely perforating the surface of the metal letter shell and embedding LED pixel beads, it creates illuminated signage with industrial texture by day and high recognizability by night. It solves the key challenges of long-distance visibility and windproof & waterproof durability for large outdoor signage, and is the preferred signage type for rooftop, exterior wall and other high-altitude applications.
- Style Compatibility
Industrial / Rugged Style: Black base with white or red lights and painted iron letter shells, suitable for factories, construction sites and auto repair shops. - Modern Commercial Style: Stainless steel base with warm yellow pixel beads, ideal for exterior signage of shopping malls and office towers to boost brand recognition.
- Festive Promotion Style: Full-color dynamic pixel beads for short-term campaigns such as sales promotions and real estate openings, delivering strong visual impact.
Structure & Material Analysis
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Letter Shell
Material: Mainly galvanized steel sheet (painted), stainless steel (brushed / mirror finish), aluminum plate and other metals. For outdoor use, plates with a thickness of 1.2–2.0 mm are preferred to guarantee structural strength.
Craft: Laser cutting followed by argon arc welding for letter shell forming. The surface can be matte or glossy painted / powder coated. Colors are customizable to match brand VI; black, white and metallic finishes are common options.
Perforation: Holes are arranged in a regular dot matrix pattern on the letter face. Standard hole diameters are 9mm /12mm, with hole spacing controlled at 15–25 mm to deliver uniform, continuous lighting. -
Lighting System
Core: Waterproof exposed LED pixel beads are used, available in three types: single-color (mainly red, yellow, white, warm yellow), seven-color gradient and full-color dynamic. Pixel brightness ≥1200mcd to ensure clear visibility from far away at night.
Protection: Each pixel bead comes with a waterproof rubber gasket. Waterproof silicone is filled inside the letter shell, and cable joints are sealed by potting to adapt to harsh outdoor conditions including rain, high and low temperatures.
Control: Full-color versions are equipped with external controllers to realize dynamic effects such as gradient, flashing and chasing, satisfying personalized brand promotion demands. -
Mounting Structure
Foundation: High-altitude outdoor signage requires a steel support frame firmly connected to the main building. The frame is hot-dip galvanized for rust prevention, with wind resistance rating ≥ Level 12.
Fixation: Letter shells are fastened to the frame by bolts or welding. Access panels are reserved for later pixel replacement and circuit maintenance.
Application Scenarios
High-altitude Signage: Rooftop large letters, office building facade signs, real estate pylon signs, focused on long-distance visibility.
Outdoor Store Signs: Facade signs for catering, auto service and supermarkets, for shops prioritizing striking appearance and durability.
Construction Hoarding: Hoarding signage for construction sites and cultural tourism projects, with excellent windproof and waterproof performance for tough outdoor environments.
Event Promotion: Temporary signage for music festivals and exhibitions; dynamic lighting enhances on-site atmosphere.
Dual Experience for Day & Night
Daytime: The texture of the metal shell and the dot-matrix perforated pattern form visual layers. Its concise, tough style conveys professionalism and reliability of the brand.
Nighttime: Lit pixel beads produce dot-matrix lighting with vivid color and sufficient brightness, visible hundreds of meters away. Dynamic versions can draw extra attention through color transitions.
Key Points for Design Optimization
- Material selection shall match the project VI system and facade materials to avoid style inconsistency.
- Font proportion shall fit the viewing height of installation locations. For outdoor signage, letter height of no less than 60cm is recommended for long-distance readability.
- Outdoor projects require enhanced waterproof and anti-rust treatment: waterproof glue filled inside letter shells and drainage holes reserved on bases.
- Adopt high CRI, low-power LED strips to extend service life and cut maintenance cost.
- Installation positions shall be planned according to sightlines of the landscape to avoid blockage by plants, with sufficient space reserved for maintenance.
