Nowadays, street lights on the streets are everywhere, illuminating people's night travel environment, and they are favored by people. The appearance of lighting has brought great changes to mankind. So, do you know the history of the development of road lighting? What was used for lighting in ancient streets? The development history of street lamps is a history of entrepreneurship in pursuit of light. Let's first introduce the development history of street lighting.1. In ancient Rome, the rich used vegetable oil lamps to illuminate their doorsteps. Special slaves are responsible for lighting, extinguishing and watching the lights.2.1417, the Mayor of London ordered all families to hang lanterns outdoors during winter nights. This is the first public street lighting organized by the government, and it is the initial form of street lights.3.1802, the Scottish inventor William Murdoch initiated a movement towards more efficient street lighting. His gas lamp illuminates the exterior of the Soho Foundry and shows it to the public. Five years later, London had its first street illuminated by gas lamps.4.1816, Baltimore became the first city in the United States to install street lighting with steam lamps. In 1820, Paris followed closely.5.1878, Paris installed the world's first arc street light. Three years later, 4000 arc street lamps were installed, effectively replacing the steam lamps installed on the lamp posts.6.1879, Edison successfully made an incandescent bulb with carbon fiber as the filament, which changed the world and promoted the development of bulbs for street lights.7. The low-pressure sodium lamp was invented in Europe in the 1930s. These lamps consist of a movable housing and a vacuum insulation layer, which emit light using low-pressure sodium vapor discharge.8. American Nick Holonyak Jr. developed the first practical visible light-emitting diode (LED) in 1962.9. In 1965, the American GE company introduced the high-pressure sodium lamp (HID), which has outstanding color and efficiency compared with the low-pressure sodium lamp. At present, HID lights are still the most common type of street lights on the planet.10. The current LED has a longer life, produces better light, uses less energy than HID lamps, and is known as the most promising green lighting source in the 21st century. . Although LEDs only accounted for a small portion of American street lights a few years ago, the pace of adoption is advancing by leaps and bounds. With the rapid rise of LEDs, as the world's most eye-catching new generation of light sources, HID street lights may soon disappear like the previous lights.11. With the generation of solar power generation, street lights can directly generate electricity from natural light sources, plus new light sources such as LEDs, which is just as powerful as a tiger.12. In 1993, the concept of smart cities emerged quietly around the world. Many developed countries have actively carried out smart city construction, organically connecting public service resources such as water, electricity, oil, gas, and transportation in the city through the Internet. Responding to better serve the needs of citizens in study, life, work, medical care, etc., and improve the government's traffic management, environmental control, and so on. The earliest smart street light was developed by a German company, and a charging pile was installed on the ordinary street light. In 2008, at the Foreign Relations Council held in New York, IBM put forward the concept of "smart earth", which in turn triggered an upsurge of smart city construction.Since ancient Rome, street lighting has come a long way. In the future, it will also develop at a high speed in the direction of more energy saving, more environmentally friendly and smarter.

Although LED street light technology is now very mature. However, we know that no matter what kind of street lights may encounter some failures, what kind of failures may occur in the use of LED street lights? What should we do when we encounter these failures? How to prevent it?Fault 1: LED street light does not light upThere are many reasons why the LED street light does not light up, and you need to check it first.1. All LEDs are off1). If the cause is: the mains protection switch has tripped, just turn it on. If it doesn’t light up even after it’s powered on, it’s usually the LED drive power failure.2) The LED street lamp power supply is a waterproof and sealed power supply. If it is broken, it will be replaced. The imperfect power supply protection function will directly affect the quality of the LED street lamp.2. There are several possibilities for only part of the damage:1). If the LED street lamp power supply is multi-channel constant output, which group may be broken2) The LED chip is not good, or the LED street lamp heat dissipation is not good, causing the LED chip to burn out.Fault two, the brightness of the LED street lamp becomes dimThe dimming of the brightness of the LED street lamp may result in large light attenuation due to the poor quality of the LED chip inside the light source. When choosing LED street lamps, we try to require street lamp manufacturers to use imported LED chips. In addition, the dimming of the brightness of the LED street lamp may also be caused by some lamp beads inside the light source burned out. In this case, we have to consider the problem of the capacitance or resistance of the LED street lamp.Fault three, LED street light flashes after turning offIf the light source is still flickering after the LED street lamp is turned off, this situation may be caused by the self-inductance current generated by the LED street lamp itself. To solve this problem, you need to buy a 220V relay, connect the coil and the light source in series, and the problem that the LED street light does not light can be solved.Since LED street lights may encounter such and other failures, it is costly to eliminate and maintain, our best practice is to take precautions. Try to find more powerful and reliable manufacturers to buy. Determine the quality of the product before buying, focusing on the brand of each component, product inspection certificates and reports, etc. CHZ is a manufacturer of high-quality LED outdoor lighting fixtures, with excellent quality and first-class service. Can solve your worries to the greatest extent.

LED high pole light is a kind of lighting used in highways, roads and other places. Beautiful appearance and strong decoration. The lighting area is large, the lighting effect is good, the light source is concentrated, the illumination is uniform, the glare is small, and it is easy to control and maintain. The electric lifting operation is convenient. After the lamp panel is raised to the working position, the lamp panel can be automatically taken off, hooked and unloaded by the steel wire rope. High-pole lights are suitable for outdoor lighting projects such as municipal projects, highways, overpasses, parking lots, stadiums, freight yards, ports, airports and public leisure squares. They are indispensable outdoor lighting products for urban lighting. According to the actual needs of the lighting of the installation area, the choice of the top style of the LED high pole lamp will be different. What are the top styles of LED high pole lights? What are the projection characteristics?1. Round top, cast light all around, The lamp panel is a circular or polygonal symmetrical style. With the lamp pole as the center, the light is evenly projected to the surroundings and can be lighted on all sides. It is suitable for road overpasses, piers, large garden central flower beds and airports. If the height of the high pole lamp is relatively high. You can choose the top of the two-circle lighting projection lamp, and the light emitted by the upper circle projection lamp is a narrow beam, which is designed to illuminate a longer range. The floodlights in the lower circle are floodlights, which illuminate the closer area. 2. Semi-circular top, fan-shaped cast lightThe lamp panel is fan-shaped, and the projection area is also a fan-shaped surface. It is suitable for crossroads and sidewalks. The height is generally 15 meters, which is beneficial to enhance the lighting of the intersection. It can also be used for square lighting, such as 15-meter square high pole lights are more common.  3. Single cross-bar top, single side lightingThere is no lamp panel in this installation method, only a cross bar, which is illuminated on one side. Generally applicable to areas such as stadiums, large intersections and docks.The above are the three basic installation styles of high pole lights. Different styles have different projection characteristics. We must choose the appropriate installation method according to the actual needs of the project.

ISO45001 OCCUPATIONAL HEALTH & SAFETY MANAGEMENT SYSTEM CERTIFICATEISO45001 is the first international standard that aims to provide a comprehensive occupational health and safety management system framework. It allows organizations to proactively respond to various challenges and opportunities related to occupational health and safety management, thereby improving the safety and health of internal and external employees of the organization. Poor occupational health management may cause employees to suffer occupational injuries and occupational diseases, and the organization may also suffer significant legal, financial and reputation damage.CHZ lighting is a regulated and cultured production company. We not only pay attention to products, but also pay attention to people!