Large Internally Illuminated Sign

Product Type: Active LED illuminated traffic sign
Application: Urban roads, expressways, highways, and traffic infrastructure systems

Product Overview

The Large Internally Illuminated Sign is an active lighting traffic sign system that integrates built-in LED light source technology to achieve uniform illumination across the entire panel surface. The design ensures consistent light transmission and high visual clarity in all operating conditions.

In low-visibility environments such as rain, fog, or nighttime driving, the sign provides a visibility distance approximately 4 times greater than conventional reflective signs, significantly improving road safety and traffic recognition efficiency. In addition to functional traffic guidance, it can also be used for urban visual enhancement and roadway aesthetic improvement.

Key Functional Features

High Visibility Performance in All Conditions

The uniform backlit panel ensures clear and stable readability during nighttime operation and adverse weather conditions. This greatly improves driver reaction time and overall traffic safety.

Intelligent Energy-Saving Dimming System

Equipped with an automatic light-sensing control system, the brightness adjusts dynamically according to ambient lighting conditions:

• Automatic brightness reduction during daylight

• Enhanced visibility at night

• Optimized energy consumption through adaptive control

This ensures both high clarity and efficient power usage.

Durable Structure with Easy Maintenance

The structure is manufactured using 6063 series aluminum alloy, providing excellent mechanical strength and long-term durability. The design also supports simplified maintenance and fast component replacement, reducing operational downtime.

Stable Aluminum-Based Lighting System

The product adopts aluminum-based diffused reflective waterproof LED light strips, offering:

• Efficient heat dissipation

• Strong moisture resistance

• Extended LED lifespan

This structure ensures stable long-term performance of the lighting system.

Technical Specifications

• Overall Dimensions: 4000 mm × 2400 mm

• Back Panel Material: Aluminum alloy 6063, average thickness ≥ 2.5 mm

• Frame Thickness: ≤ 60 mm (excluding mounting components); 55 mm without sliding rail system

• Light Source Type: Aluminum-based light panel

• Lifespan ≥ 30,000 hours

• Annual light decay ≤ 5%

• Luminous intensity > 4500 lux

• Color Temperature: 12000K

• Luminous Flux: 110–120 LM

• Reflective Material:

• Graphic/text area: prismatic Type V reflective sheeting

• Other areas: Type IV reflective sheeting

• Power Supply: Mains power

• Operating Voltage: 24V

• Rated Power: ≤ 100 W/㎡

• Weight: ≤ 20 kg/㎡

Operating Modes

• ON/OFF Mode: Automatically switches based on ambient brightness

• Dimming Mode: Adjusts brightness dynamically according to environmental lighting

Display Principle

The system integrates an LED mixed-light aluminum-based panel installed inside the sign housing. The light is projected toward the rear of the reflective graphic layer, enabling high-definition and high-contrast visual display of information content.

Light Transmission Material

• 30 mm double-layer transparent fiberglass perforated board

Luminance Performance

• White: ≥ 300 cd/m²

• Yellow: ≥ 150 cd/m²

• Red: ≥ 45 cd/m²

• Green: ≥ 45 cd/m²

• Blue: ≥ 30 cd/m²

• Brown: ≥ 22 cd/m²

Average luminance contrast ratio (blue/green vs white): 1:5 to 1:18

Optical & Environmental Performance

• LED Viewing Angle: 175°

• Lamp Life: 7–10 years

• Operating Temperature: -40°C to +60°C (Grade B)

• Protection Rating: IP55

• Relative Humidity: ≤ 95%

• Visual Range: ≥ 1000 m

Summary

The Large Internally Illuminated Sign integrates high-brightness LED technology, intelligent light control, and durable aluminum structural design to deliver a stable and efficient traffic guidance solution. With superior visibility in adverse weather conditions and low energy consumption characteristics, it is widely suitable for modern urban traffic systems, highways, and infrastructure safety applications.