At present, ultra-bright
LEDs
have replaced incandescent lamps for traffic
lights
, warning lights, and sign lights all over the world. Compared with incandescent lamps, LED traffic lights have the advantages of low power consumption, long service life, and can greatly improve
brightness
, making them the ideal light source for future traffic lights.
1. Good visibility:
LED traffic lights can still maintain good visibility and performance indicators under adverse weather conditions such as continuous lighting, rain, dust, etc. The light emitted by LED is monochromatic, so there is no need to use color filters to produce red, yellow, and green signal colors; the light emitted by LED is directional and has a certain divergence angle, so the
aspherical
reflectors used in traditional signal lights can be discarded. This feature of LED solves the problems of phantom (commonly known as false
display
) and color filter fading in traditional signal lights, and improves
the light efficiency
.
2. Power saving:
LED light source
The advantages of energy saving are very obvious. One of its notable features is low energy consumption, which is very meaningful for the application of lamps. LED traffic lights almost 100% of the LED excitation energy becomes visible light, compared to incandescent bulbs, 80% of which becomes heat loss and only 20% becomes visible light.
3. Low heat energy:
LED is a light source that
directly converts
electricity
into light
, and the heat generated is extremely low, almost no heat. The cooled surface of LED traffic lights can prevent maintenance personnel from getting burned, and can achieve a longer life.
4. Long life:
The working environment of the lamp is relatively harsh, with severe cold and heat, sun and rain, so the reliability of the lamp is required to be high. The average life of the incandescent bulb used in general signal lights is 1000 hours, and the average life of the low-voltage halogen tungsten bulb is 2000 hours, resulting in high maintenance costs. LED traffic lights have no filament vibration that causes damage, and there is no problem of glass cover cracking.
5. Fast response:
What halogen tungsten bulbs cannot match LED traffic lights is their fast response time, which reduces the occurrence of traffic accidents.
Due to the important role of traffic lights in urban traffic, a large number of traffic lights need to be updated every year, which leads to a relatively large market. After all, high profits are also conducive to the development of LED production and design companies, and will also have a positive stimulus for the entire LED industry.
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