Procurement standards LED street lights

There are two reasons of LED street lights still not be promoted in a large area, high prices, unstable quality. Over time, the price will become lower, but the low price is not the fundamental problem of the conventional light there is the market, because LED street lights are government projects, in a sense represents the government's image.

Street lights need every day, and lighting a long time, if the quality is not, not only the people are not satisfied, street management and maintenance is no small task, so the requirements of its street lighting rate is a key indicator of the . So when the lights began to purchase one should seize the following key aspects.

A procurement links

The first is when the light fades purchase inspection report, which is a very important part. Each company will provide the tender light decay test reports in different units, some companies provide their own self-test, there are some third-party testing, inspection report, although there is a good test results, the actual disparity between the really big light fades, the reasons You know, then how can we identify what is genuine it?

Test Report First Semiconductor Alliance accredited notified body. Such as Beijing Electric Light Source Quality Supervision and Inspection Center, Shanghai Electric Light Source Quality Supervision and Inspection Center, and other semiconductors thirteen, by test reports of these units have credibility bad light, road lighting street lamps high power use, heat generation is large, By detecting the light fades two issues: bad light passing power through. If a street light in the laboratory are not pass the test, but also on the road to ensure the quality of it?

Second, the street light structure

After a road test this off light attenuation structure is a big problem. This issue little attention in the industry, which is one of the main causes large lumen when the actual street.

As we all know, the National haze area is so big, it is not only harm the human body, but also the right path lighting failure caused large, especially in the northern region, more dust, haze large, the use of a short time outdoors, the entire street surface covered with dust, the cooling effect is greatly reduced. This is one street not everyone know the main culprit LED.

According to this, the lighting must be designed to be transparent from top to bottom. Exponentially increase the cooling area, because none of the street department will be time to clean the radiator, in the long run can only rely on rain washing, leave enough area will increase due to the pollution caused reduction of the effective cooling area.

Third, the light source section

Road lighting failure has barrel effect, there is a short board does not work, the light fades troubled you for so many years, there is a problem is you do good radiator lamps light failure can be solved, and no, we began to discuss the past the use of low-power chips shell package, can not do high-power chip, said chip heat power not scattered out, is not the case, COB package more focused heat through aluminum frame or copper frame can solve the thermal problem.

But the light fades more difficult to control, because the radiator resolved well not necessarily solve the problem of bad light source, the light source package there is a big misunderstanding, COB light silicone thick, it should be as thin as possible silicone encapsulation for easy chip light-emitting surface heat, which is why COB light source where the light fades poor control.