Common Pitfalls and Precautions in Led Street Light Procurement

March 24, 2023

Due to the characteristics of low power consumption, high luminous efficiency, long life, energy saving and environmental protection, traditional street lamps have been gradually eliminated and become the "main force" of road lighting. The lighting time of the street lamp is long, and it is installed outdoors, causing the sun and rain, so the quality requirements of the lamp must pass the test. Otherwise, the damage to the lamps will pose a threat to road safety. Therefore, whether enterprises, institutions or engineering companies need to be careful when purchasing street lights, to avoid falling into the procurement trap.

Street light procurement needs to pay attention to the following pitfalls:

Trap 1: Counterfeit chips, low-end chips

The core of Outdoor Adjustable Street Light Fixture is the chip, which directly determines the performance of the lamp! However, some unscrupulous manufacturers take advantage of the unprofessionalism of customers, consider the cost, and use low-priced chips, so that customers can buy low-quality products at high unit prices, resulting in direct economics. Loss, and cause serious quality hidden dangers to LED lamps.

Trap 2: Configuring virtual standards and exaggerating configuration parameters

The hotness of solar street lamps is also accompanied by the reduction of prices and profits. The fierce competition has also led to many solar street lamp manufacturers beginning to cut corners and falsely mark product parameters, such as the wattage of the light source, the wattage of the solar panel, the capacity of the battery, and even the use of solar street lamp poles. Materials are in problem. Of course, this is also caused by customers repeatedly comparing prices and demanding low prices, and it is also related to the practices of some manufacturers.

Trap 3: Poor heat dissipation design and unreasonable configuration

In terms of heat dissipation design, every time the PN junction temperature of the LED chip increases by 10 degrees, the life of the semiconductor device will decrease exponentially. Due to the high brightness requirements of LED solar street lights, the use environment is relatively harsh. If the heat dissipation is not solved well, it will quickly lead to LED aging and reduce stability. In addition, unreasonable configuration often leads to specific usage conditions not meeting expectations.

Trap 4: Copper wire pretends to be gold wire and controller problem

Many LED manufacturers are trying to develop such as copper alloy, gold-clad silver alloy wire, and silver alloy wire to replace expensive gold wire. Although these alternatives are superior to gold wires in some characteristics, they are much worse in terms of chemical stability, such as silver wires and gold-clad silver alloy wires are susceptible to sulfur/chlorine/bromide corrosion, and copper wires are prone to oxidative sulfidation. For encapsulating silica gel similar to water-absorbent and breathable sponges, these alternatives make the bonding wire more susceptible to chemical corrosion, reduce the reliability of the light source, and make LED lamp beads more likely to break and die after a long time of use. In terms of Solar Street Light controllers, if there is a fault in the controller, during the test and inspection process, there will be "whole light off", "switch light not on time", "partial damage", "individual LED lamp bead dead light", " The whole light is flickering and falsely bright".

100w Best Adjustable Street Light Jpg

Secondly, purchasers need to pay attention to the following issues during the procurement process:

1. Purchasing link

When purchasing, the first is the light attenuation test report, which is a very important link. When bidding, each company will provide the light attenuation test report of different units, some provide their own company's self-inspection, and some third-party testing. Although the test results in the test report are good, the actual light attenuation is very different. The reason Everyone knows it, so how can we recognize the real product with discerning eyes?

The test report is firstly a designated body recognized by the Semiconductor Alliance. Such as Beijing Electric Light Source Quality Supervision and Inspection Center, Shanghai Electric Light Source Quality Supervision and Inspection Center, Semiconductor Institute 13, etc., the light decay of the test reports from these units is credible, and the street lamps used for road lighting have high power and generate large amounts of heat. Through the light attenuation test, two problems are explained: the light attenuation is qualified, and the power supply is passed. If a street lamp can't pass the test in the laboratory, can the quality be guaranteed on the road?

2. Street light structure

After passing the road light decay test, the structure is a big problem. This problem has rarely been paid attention to in the industry, and it is also one of the main reasons for the large light attenuation in the actual use of street lamps.

Everyone knows that the area of smog in the country is so large. It not only harms people, but also causes great degradation of street lights. Especially in the northern region, there is a lot of dust and haze. After using it outdoors for a short period of time, the entire surface of the street lights Covered with dust, its heat dissipation effect is greatly reduced. This is also one of the main culprits why LED street lights are not known to everyone.

According to this situation, the lamp design must be transparent from top to bottom. Doubling the heat dissipation area, because no street lamp management department will clean the radiator on time, and it can only be washed by rain in long-term use. After the area is enlarged, there will be enough reduction in the effective heat dissipation area due to pollution.

3. Part

There is a wooden barrel effect in street light decay, even if there is a short board. The light decay has troubled everyone for so many years. The problem here is that you can solve the light decay if you make a good lamp radiator. No, everyone started to discuss it in the past Using low-power chip cannonball package, but high-power chip can`t do it. It is said that the chip has high power and the heat cannot be dissipated. This is not the case. The heat of COB package is more concentrated, and the heat conduction problem can be completely solved through aluminum bracket or copper bracket.

But the light attenuation is more difficult to control. The reason is that a good heat sink may not be able to solve the problem of light attenuation of the light source. There is a big misunderstanding in the packaging of the light source. The silica gel of the COB light source is too thick. The thinner the silica gel package should be, the better it is to facilitate the chip. The light-emitting surface dissipates heat, which is why the light decay of COB light sources is not easy to control.

The above content is provided by WOSEN. WOSEN is a professional manufacturer and supplier of Led Flood Light, Led Street Light, Led Solar Light, etc. For more information, please visit https://www.wosenled.com/ or contact admin@wosenled.com or WhatsApp +86-13425434349

Author:

Ms. Mandy

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admin@wosenled.com

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