What is the illuminance range of a 30w Street Light LED?

As a reputable supplier of 30W LED street lights, I often receive inquiries about the illuminance range of these energy - efficient lighting solutions. In this blog post, I will delve into the factors that determine the illuminance range of a 30W LED street light, provide some typical values, and also touch on how this compares to other wattages of LED street lights.

Understanding Illuminance

Illuminance, measured in lux (lx), is a crucial parameter when it comes to street lighting. It represents the amount of light that falls on a surface area. Adequate illuminance on streets is essential for ensuring the safety of pedestrians and drivers, as well as for enhancing the overall security of the area. A well - lit street reduces the risk of accidents, helps in identifying potential hazards, and deters criminal activities.

Factors Affecting the Illuminance Range of a 30W LED Street Light

1. Luminous Efficacy

Luminous efficacy is a measure of how well a light source converts electrical power into visible light. High - quality 30W LED street lights typically have a luminous efficacy ranging from 100 to 150 lumens per watt (lm/W). This means that a 30W LED street light can produce between 3000 and 4500 lumens. The higher the luminous efficacy, the more light is produced for the same amount of power, resulting in a higher illuminance on the ground.

2. Mounting Height

The height at which the street light is mounted has a significant impact on the illuminance. As the mounting height increases, the light spreads over a larger area, and the illuminance on the ground decreases. For a 30W LED street light, a common mounting height is between 4 and 6 meters. At a mounting height of 4 meters, the illuminance directly below the light can be around 20 - 30 lux, while at a 6 - meter mounting height, it may drop to 10 - 20 lux.

3. Beam Angle

The beam angle of the LED street light determines the spread of light. A narrow beam angle will concentrate the light in a smaller area, resulting in higher illuminance in that area, while a wide beam angle will spread the light over a larger area, reducing the illuminance per unit area. Most 30W LED street lights have a beam angle between 120° and 150°, which provides a good balance between coverage and illuminance.

4. Road Surface Reflectance

The type of road surface also affects the illuminance. A light - colored and smooth road surface will reflect more light than a dark and rough surface. For example, a concrete road may reflect more light than an asphalt road, increasing the overall illuminance in the area.

Typical Illuminance Range

Under normal conditions, with a mounting height of 5 meters and a beam angle of 120°, a 30W LED street light with a luminous efficacy of 120 lm/W (producing 3600 lumens) can provide an illuminance of about 15 - 25 lux on the road surface directly below the light. As you move away from the light, the illuminance gradually decreases. At a distance of 3 - 4 meters from the point directly below the light, the illuminance may drop to around 5 - 10 lux.

Comparison with Higher - Wattage LED Street Lights

While a 30W LED street light is suitable for some low - traffic areas such as residential streets and alleys, higher - wattage LED street lights are required for high - traffic roads and highways. A 100W LED Street Light can produce around 10,000 - 15,000 lumens, providing a much higher illuminance. Similarly, a 150W LED Street Light can produce 15,000 - 22,500 lumens, offering even greater illuminance. However, it's important to note that higher - wattage lights also consume more energy.

Benefits of Using 30W LED Street Lights

Despite their relatively lower illuminance compared to higher - wattage lights, 30W LED street lights have several advantages. They are energy - efficient, which means lower electricity bills and reduced carbon emissions. They also have a long lifespan, typically lasting up to 50,000 hours, reducing the need for frequent replacements. Additionally, they provide instant illumination and are more environmentally friendly compared to traditional street lights.

Why Choose Our 30W LED Street Lights

As a supplier, we offer Hi Quality LED Street Light that are designed to meet the highest standards. Our 30W LED street lights are made with high - quality components, ensuring a long lifespan and stable performance. We use advanced optical design to optimize the beam angle and luminous distribution, providing the best possible illuminance for your specific needs.

Contact Us for Procurement

If you are in the market for high - quality 30W LED street lights, we would love to hear from you. Whether you are a municipality looking to upgrade your street lighting system, a contractor working on a new development project, or a property owner in need of reliable outdoor lighting, our team of experts can help you find the right solution. Contact us today to discuss your requirements and get a customized quote.

References

• "LED Lighting Handbook" by Philips Lighting
• "Illuminating Engineering Society (IES) Lighting Handbook"
• Various technical datasheets from LED street light manufacturers