LED Streetlights Modules

LED street light aluminum substrate is a kind of heat-dissipating aluminum material used in urban street lights, solar street lights, tunnel street lights, etc. LED street light aluminum substrate can be divided into ordinary thermal conductivity and high thermal conductivity type.

It is usually used in the lamp head of the street lamp, replacing the previous traditional PCB circuit board; the aluminum material is covered with various circuits. The current LED street light aluminum substrates are 150W, 80W, 72W, 36W, 12W, 14W, etc. The size of the power generally depends on the size of the street lamp head and its own heat dissipation. The service life of LED street light aluminum substrate is usually 100,000 hours, with high thermal conductivity and low thermal resistance.

Features

■ Reduce product volume, reduce hardware and assembly costs;

■ Reduce product operating temperature and extend product service life;

■ Improve product power density and reliability;

■ Effectively handle heat dissipation in circuit design.

Test items	Unit	International Standard Value
Peel strength	N/mm	1.8
Surface resistivity	MΩ	≥ 1×105
Volume resistivity	MΩ·m	≥ 1×106
Breakdown voltage	KV/～	2
Solder resistance	260℃	5min No layering, no foaming
Flammability	/	FV-0
Thermal resistance	℃/W	2.O
Dielectric constant	/	≤4.4
Dielectric loss factor	/	≤0.03
Thermal shock resistance	300℃	1min no delamination, no foaming

Cooling technology

The heat dissipation technology of LED street lamps is generally used in the form of a heat conduction plate, which is a 5mm thick copper plate, which is actually a temperature equalizing plate, which can dissipate the heat source. Weight is very important in the street light system, because the height of the street light is 9 meters, if it is too heavy, the danger will increase, especially in the event of typhoons and earthquakes, accidents may occur. Some domestic manufacturers use the world’s first needle-shaped heat dissipation technology, needle-shaped radiator Compared with the traditional sheet radiator, the heat dissipation efficiency is greatly improved, which can make the LED junction temperature more than 15℃ lower than that of the ordinary radiator, and the waterproof performance is better than that of the ordinary aluminum radiator, and the weight and volume are also improved.

Industry analysis

The current LED street light aluminum substrate products have covered the entire LED lighting industry, such as urban road lighting, courtyard lighting, street lighting, etc. From the overall situation of the industry, LED street light aluminum substrates will maintain a high development trend in the next 10 years, and product profits will increase steadily. In terms of domestic sales, due to the steady development of the domestic economy, the product market has also ushered in a period of rapid growth. Due to the rapid development of the domestic LED street lamp aluminum substrate industry, it has also caused a rather fierce competition.

Production Process

1. Cutting: Cut the raw material into the size required in production.

2. Drilling: positioning and drilling the plate to provide help for subsequent processing.

3. Line imaging: present the required part of the line on the sheet.

4. Etching: Retain the required parts after line imaging. The rest do not need to be partially etched away.

5. Silk screen solder mask: prevent non-soldered points from being contaminated with solder, and prevent tin from entering and causing short circuit. The solder mask layer is particularly important during wave soldering, which can effectively protect the circuit from moisture.

6. Silkscreen characters: for marking.

7. Surface treatment: to protect the surface.

8. CNC: carry out numerical control operations on the entire board.

9. Withstand voltage test: test whether the circuit is working normally.

10. Packaging and shipping: Confirm that the packaging is complete and beautiful, and the quantity is correct.

Application

LED street light aluminum substrates are mainly used in urban expressways, trunk roads, secondary roads, branch roads, factories, schools, gardens, various residential quarters, courtyards and other road lighting.
1. Garden road lighting
2. High-grade residential road lighting
3. Large parking lot lighting
4. Sports venue lighting
5. School playground lighting