LED street lamps have the characteristics of low power […]
LED street lamps have 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. Street lamps have a long lighting time, and they are installed outdoors, causing sun and rain. Therefore, the quality requirements of the lamps must be passed. Otherwise, the lamps will be damaged and will pose a threat to road safety. Therefore, no matter companies, institutions or engineering companies need to distinguish carefully when purchasing street lights, to avoid falling into the procurement trap. The following issues need to be paid attention to when purchasing LED street lights:
1. Counterfeit chips, low-end chips
The core of LED lamps is the chip, which directly determines the performance of the lamp! However, some unprofessional manufacturers take advantage of the unprofessionalism of their customers, and use low-cost chips from the perspective of cost, so that customers can buy low-quality products at a high unit price, resulting in direct economy Loss and cause serious quality risks to LED lamps.
2. Configure virtual labels and exaggerate configuration parameters
The fierceness of LED street lamps is also accompanied by the reduction of price and profit. The fierce competition has also led to many LED street lamp manufacturers starting to cut corners and false standard product parameters. The wattage of the light source and even the material used for the light pole are in problems. Of course, this is also caused by customers' repeated price comparisons and low prices, and it is also related to the practices of some manufacturers.
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 be reduced by multiples. Due to the high brightness requirements of LED street lights, the use environment is relatively harsh, if the heat dissipation is not solved well, it will quickly cause LED aging and reduce stability. In addition, unreasonable configuration often leads to specific usage conditions that fall short of expectations.
4. Copper wire pretends to be gold wire
Many LED manufacturers try to develop materials such as copper alloy, gold-coated silver alloy wire, and silver alloy wire to replace expensive gold wires. Although these alternatives are superior to gold wires in some properties, they are much worse in terms of chemical stability. For example, silver wires and gold-coated silver alloy wires are susceptible to sulfur/chlorine/bromination corrosion, and copper wires are prone to oxidation and sulfidation. For the encapsulated silica gel similar to the water-absorbent and breathable sponge, these alternatives make the bonding wire more susceptible to chemical corrosion, the reliability of the light source is reduced, and the use time is long, and the LED lamp beads are more likely to break and die.