1, shell material: in general, the thickness of the public mode traffic signal housing is relatively thin, within 140mm, raw materials are generally pure PC material, ABS material, recycled material, miscellaneous materials, etc.. Among them, the quality of pure PC material is good. Switching power supply: mainly for the night traffic signal yellow flashing power source of anti-surge, power factor, charge and discharge requirements. For punctuality, the switching power supply can be sealed in the black plastic lamp housing, open-air use for a whole day, depending on the details of use.
2, the function of LED: LED is widely used in traffic signals because of its environmental protection, high brightness, low heat, small size, low power consumption, long service life and other advantages. Therefore, when judging the quality of traffic lights, this is also an aspect that needs to be carefully considered. Generally speaking, the size of the chip determines the cost of the traffic light.
3, national standards: traffic lights should be sent for inspection, the inspection cycle of two years. Conventional traffic signal products even if you get the test statement, the investment cost will not be less than 200,000 yuan. So there is no relevant national standard statement but also used to judge the quality of traffic lights. You can check whether the Ministry of Public Security Traffic Safety Product Quality Supervision and Inspection Center is true through the number and company name on the test statement.
Solar panel selection: In fact, the rated power is less than the maximum power, and the output power of the solar cell is only about 70%. In the application, the power varies from time to time due to different light intensities.
Battery selection: A container for storing electrical energy, often used as a "power base" for other circuits. Since solar cells produce a limited amount of power, we should expand the storage capacity of the "base" as much as possible, but not indefinitely. According to the difference of sunshine time and geographical latitude and longitude, copper-free batteries can be selected.
Solar street light height selection: According to the actual situation, choose the height of the solar lamp pole. The suitable height is above two meters. The height of the pole can be chosen according to the direction of the solar street light placement. For example, the new rural streets can choose a higher light pole, and the park can choose a lower light pole.
Solar street lights can theoretically only be installed in places where the sun can be reached. The solar street light system is an independent and decentralized power supply system, which is not restricted by geography and does not require a transmission system. Solar street lights are environmentally friendly and energy-efficient, and have good economic benefits. Various types are suitable for various environmental applications, such as solar street lights, wind landscape complementary street lights, solar garden lights, etc.
