At present, incandescent lamps are replaced by ultra-bright LEDs, which are used in traffic lights, warning lights, and signs all over the world. Compared with incandescent lamps, LED traffic lights have the advantages of less power consumption, long service life, and large improving the brightness and become an ideal light source for future traffic lights.
1. Good visibility: LED traffic lights can still maintain good visibility and performance indicators under harsh weather conditions such as continuous light, rain, and dust. The light emitted by the LED is monochromatic light, so it is not necessary to use color chips to generate the signal colors of red, yellow and green; the light emitted by the LED is directional and has a certain divergence angle, which can abandon the traditional signal lights. Aspherical reflector. This feature of LED solves the problems of phantom (commonly known as false display) and color fading existing in traditional signal lights, and improves light efficiency.
2. Power saving: The advantages of LED light source in energy saving are very obvious. One of its remarkable features is low energy consumption, which is very meaningful for the application of lamps. Almost 100% of the excitation energy of LED traffic lights becomes visible light, compared to 80% of incandescent bulbs as heat loss and only 20% as visible light.
3. Low heat energy: LED is directly converted from electrical energy into light energy, the heat generated is extremely low, and almost no heat is generated. The cooled surface of the LED traffic lights prevents burns for maintenance personnel and results in a longer lifespan.
4. Long life: The working environment of traffic lights is relatively harsh, with severe cold and heat, sun and rain, so the reliability of lamps is required to be high. The average lifespan of incandescent bulbs for general signal lights is 1000h, and the average lifespan of low-voltage halogen tungsten bulbs is 2000h, resulting in high maintenance costs. LED traffic lights have no filament to cause damage, and there is no glass breakage problem.
5. Fast response: What tungsten halogen bulbs are inferior to LED traffic lights is that the response time is fast, thereby reducing 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. For the entire LED industry , there are also benign stimuli.
