Lumens depreciation of led street light how to fix it

lumens depreciation of led street light

Urban roadways are always outlining with lots of led street lights. If observing very carefully it is very easy to get that LED street light is not as brilliant as they were at the beginning after working a couple of months, that is just what we actually called lumens depreciation of led street lights. So why did it come out to this?

After the LED street lights are installed and lit up for a long time, their luminous intensity will certainly become less than the initial value. The point is nearly every LED lighting fixture you can figure out will certainly come to this phenomenon, not even the LED street lights. The luminous intensity decrease of LED roadway light is caused by the depletion of light in transmission. If someone informs you they can provide you with led street lights that lumens depreciation never ever happen, it is definitely a lie. As a matter of fact, almost all LED street lights on the market have a similar problem about the lumens decay, just difference is the depreciation level.

How to differentiate which led street light has outstanding anti-decay efficiency? The depreciation curve would certainly be an aesthetic method for reference.

In the picture below, the lumen depreciation of the tested led street light from YIBAI LED LIGHTING is lower compared to a typical product on the current market, which means our product certainly has much better efficiency than lots of led roadway lighting fixtures with other brands. As to High-power led street lights, there remains a lumens depreciation problem.

Lumens depreciation of led street light how to fix it

What lead to the depreciation of led street lights? Below are some aspects.

1. Temperature.

The most significant factor of lumens depreciation is the temperature of the LED. If the heat dissipation design of the led street light is not so great, or the working temperature of led is too high, the lumens depreciation will certainly achieve an extremely rapid increase. As lots of led street lights on the market are equipped with multiple led chips, so when developing led roadway lights it is very important to take the heat dissipation into consideration, as well as the LED array range, the building material of luminaires housing, etc.

2. The top quality of the led chip.

Light originates from the led chip. Top-quality led chip not just sorts out the light human beings need to get, moreover avoids the lumens depreciation.

3. The fluorescent powder of the led chip.

4. The packaging techniques of the led chip.

As known to all, lots of led light manufacturers choose various led chips to fulfill the different color demands. Regarding the CCT of LED street lights, the mainstream technology is that painting the led with a specific percentage of fluorescent powder can lead to a different color. So the Fluorescent powder packaging technology of led is also associated with lumens depreciation.

Generally speaking, there are three leading factors of lumens depreciation on LED roadway lights.
1. Thermal resistance of LED chip.

2. Glue used in the LED chip.

3. Heat dissipation design of luminaire housing.

Lots of aspects are affecting lumens depreciation, however, the temperature is the vital aspect. Plenty of LED roadway light manufacturers do not care about the heat dissipation of their products, so they can give you a very low price.

But we YIBAI LED LIGHTING keep an eye on heat dissipation in our products long-last using. Via choosing top quality LED chip, and making a good heat dissipation design, we can minimize LED roadway light lumens to decrease. Our unique design luminaire housing has actually well hit the heat dissipation requirements of LED street lights. The streamlined housing of the MELO Series LED street light not only can enhance the function of wind resistance but also improve the heat transmission efficiency. Even more, there we design an air vent to balance the atmospheric pressure in the housing. Using double-design of heat dissipation management perfectly, the temperature is under well control, and afterward, we minimize the lumens decay on our products.

For more information about YIBAI LED lighting solutions including IES files, Dialux simulation reports, and technical datasheets, please visit

Contact Us:
Guangdong Yibai Optotech Co., Ltd
Tel: +86-13631786201
E-mail: [email protected]

Melo Series LED street light
NOVA-SF Series LED Area Lighting Luminaire
NOVA-HT Series LED Area Lighting Luminaire
Flat Panel Series LED Solar Street Light
What’s the manufacturing process technology of LED chips
LED heat dissipation technology and heat dissipation materials
How to find the right optic lens for LED lighting fixtures
Street lights with more energy saving boost for North Yorkshire tourism
How to choose a right LED shoebox light for your parking lot
outdoor lighting minimizes harm to insects UCLA study reveals
Magnetic Island, QLD introduces low color temperature LEDs to protect turtles
Questions in Dublin, Ireland about glare from 4000K LEDs
Riyadh, Saudi Arabia deploying 74,000 LEDs with smart controls
smart poles to improve amenity, safety, and convenience
smart controls led street lights convertions 37000 LED luminaires
25 Basic knowledge of lighting the application classifications
illuminance calculation
smart lighting control
Light pollution from street lamps linked to insect loss
Telensa demonstrates TALQ interoperability on Georgia street lights
Street Lighting in Smart Cities on energy savings, safety, and data analysis
Egypt to replace 1.5 million streetlights with energy-saving alternatives
Energy efficient LED street lights retrofitting project in New York State
Wairarapa in New Zealand is one step closer to creating the country’s largest dark sky reserve.
Parramatta leads way with the largest smart street lighting upgrade in NSW
Smart streetlights save Christchurch ratepayers $1.5m
Lighting Regions to slash millions in energy and maintenance costs
Bouygues to upgrade 43,000 street lights with LEDs and smart controls for Suffolk County Council, UK
Signify adds a lower-cost option to its smart street lighting stable
Six tips for indoor lighting design
Three requirements you must know about museum lighting designThree requirements you must know about museum lighting design
Professional shopping mall lighting design three tips you need to know
Requirements for lighting in food and beverage processing
What are the functions of smart street lights?
What are the characteristics of professional LED cold storage lamp
A comprehensive guide of professional tennis court lighting design
A classic flood lighting design Suzhou Industrial Park Sports Center
Real one Series LED Smart Street light (19)
Advantages and Disadvantages of lithium iron phosphate battery
best solar panel for cloudy conditions
All in one solar light S5 project(2)
Waterproof car wash lighting fixtures how to choose the best
Car wash lighting how we design professional lighting solution
Car workshops lighting how to make professional lighting design
Proper road lighting is a guarantee of traffic safety
Clearnroom lighting how we make professional lighting design
Tennis court lighting how we make professional lighting design
How to properly design a tunnel lighting system
Indoor basketball court how we design a professional LED lighting solution
Professional sports lighting fixtures how to choose the best solution
Football stadium lighting design how to make it professional
Indoor badminton court lighting how we make professional lighting design
How to control glare for swimming pool lighting
Indoor basketball court lighting
The unique design of the track field lighting
Choose professional LED stadium lights for football stadiums
Advantages & disadvantages of LED solar street light
How is IoT technology making our cities better and smarter?
Secure, sustainable smart cities and the IoT
people affected by unsuitable street light distribution
lumens depreciation of led street light
Best solutions for explosive zones lighting
What are the requirements for lighting mining quarries
Lighting for heavy industry mines
Exterior LED lighting
Upgrade your HPS HID Lamps to LED Lighting Fixtures in Greenhouse
Good public lighting
Upgrade your HPS HID Lamps to LED Street Lighting Fixtures
Reconstruction of street lighting
Lighting of underground parking lots, parking areas
Lighting illumination of pedestrian crossings
What are the requirements for lighting of roads and street
Degree of Protection IP and Class of Vandal Protection IK
Classification of explosive and fire-hazardous premises
LED Industrial lighting what kind of lamps and lanterns are good
Die cast alluminium alloy street light housing
SLA Series LED Sports Field light
What we need to pay attention when installing landscape lamps
What we need to pay attention when installing landscape lamps
YIBAI LED Street Lighting Projects
Smart City
LED landscape lighting
What lights should the football field be equipped with
What lights should the football field be equipped with