Protective measures against ice condensation hazards of LED street lights
A problem that is easily overlooked in the promotion and application of street lamps in cold areas is the accumulation of ice and snow on the surface of the lamps, and the ice formed after being melted by heat. Once the ice is formed, it will cause great safety hazards to vehicles and pedestrians. Especially for LED street lamps, since the lamp housing is generally made of aluminum, the aluminum oxide on the surface is a hydrophilic material, which is more likely to cause ice condensation. In 2008, a large-scale snow disaster in southern my country caused a large amount of ice to condense on the high-voltage wires on the aluminum surface, which collapsed and damaged a large number of power facilities. This disaster is not only caused by the weather, but also the high-voltage cable on the surface of alumina is a hydrophilic material, which is also an important incentive. Because it affects the safety of road traffic, preventing ice condensation is a safety measure that must be taken into account when LED street lights are used in cold areas.
In order to more accurately compare the ability of different materials to prevent ice condensation, we deeply studied the internal relationship between the surface structure, surface properties and ice coating of different objects from different angles, including: structural shape and ice coating, structural material and ice coating , Surface finish and icing, surface rigidity and icing. The research results show that the components with simple shape structure, compact structure, excellent surface waterproof and hydrophobic properties are not prone to ice condensation.
Based on this test data, we have set up LED street lamps with different appearances and shell materials in winter for several consecutive years. Through experiments, we found that: all lamps have a smooth, smooth and smooth appearance; there is no ice, snow or water accumulation bearing structure; the surface material has LED street lights with excellent hydrophobic properties will not cause ice condensation.
Most of the cold regions in my country are located in high latitudes, with cold climate and large temperature difference, which brings new challenges to the application of LED road lighting products. On the other hand, the annual average daily lighting time in most cold regions is longer than the domestic average level, so the lighting power consumption is also higher than the domestic average level. Therefore, the geographical characteristics of short days and long nights have brought more demand for LED lighting applications. Overall, the application of LED lighting products has both challenges and opportunities.
