As a fundamental traffic facility in road traffic, traffic lights are very important to be installed on the road. It can be widely used in highway intersections, curves, bridges and other risky road sections with hidden safety hazards, used to direct driver or pedestrian traffic, promote traffic dredging, and then effectively prevent traffic accidents and accidents. Since the effect of traffic lights is so significant, the quality requirements for its products must not be low. So do you know how to judge the quality of traffic lights?
1. Shell material:
Generally speaking, the thickness of the traffic signal light shell of the male model is generally relatively thin, all within 140mm, and the raw materials are generally pure PC material, ABS material, recycled material, miscellaneous material, etc. Among them, the quality of the raw material of the traffic signal light shell made of pure PC material is the best.
2. Switching power supply:
The switching power supply mainly focuses on the charging and discharging requirements of anti-surge, power factors, and traffic lights at night. When judging, the switching power supply can be sealed in a black plastic lamp shell and used in the open air all day long to see the detailed application.
3. LED function:
LED lights are widely used in traffic lights because of their advantages of environmental protection, high brightness, low heat, small size, low power consumption, and long service life. Therefore, when judging the quality of traffic lights, this is also required. an aspect of careful consideration. In general, the size of the chip determines the price of the cost of the traffic light.
The low-end traffic lights on the market use chips that take 9 or 10 minutes. Users can use the visual comparison method to determine that the size of the chip directly affects the intensity and life of the LED light, and then affects the light intensity and life of traffic lights. If you want to determine the function of the LED, you can add the appropriate voltage (red and yellow 2V, green 3V) to the LED, use a piece of white paper as the background, turn the light-emitting LED towards the white paper, and the high-quality traffic light LED will show the rules The circular spot of the LED, while the spot of the inferior LED will be an irregular shape.
4. National standard
Traffic lights are subject to inspection, and the inspection report period is two years. Even if the conventional traffic light product gets the inspection report, the investment will not be less than 200,000. Therefore, whether there is a relevant national standard statement is also an aspect used to judge the quality of traffic lights. We can take the serial number and company name on the test statement to inquire whether it is true or not.
Post time: Feb-09-2022
