As a new type of outdoor advertising carrier, outdoor LED electronic display has become a new highlight of urban outdoor advertising due to its superior visual and sensory characteristics, and has attracted much attention. China's 50mm Flexible LED Mesh Display display industry has gone through ups and downs for 20 years. Today, the quality of LED displays produced in China has been recognized by the global market.
However, the potential safety hazards of outdoor LED electronic display screens, especially the fire safety application technology of LED display screens, are the focus. Look at what factors will affect the safety and fire prevention of the display screen. The sudden fire incident at the Yijunchuo Hotel in Hong Kong on April 2, 2012 has sounded a wake-up call for the entire LED industry: while the industry is developing rapidly, LED There are still shortcomings in the field of display security application technology, and the standardization and standardization of LED products have been put on the agenda again.
The quality of display screen fire protection technology is mainly related to the display screen fire protection raw materials and box process.
Fireproof raw materials mainly include wires and power supplies used inside the display screen, fireproof materials for external protective structures and plastic kits:
The first point: In most display applications, the larger the unit area of __the display, the greater the power consumption, and there are higher requirements for the stability of the wire. Among many wire products, the use of wires that meet the requirements of the national standard can ensure their safety and stability. There are three requirements: the wire core is a copper wire conductive carrier, the tolerance of the cross-sectional area of __the wire core is within the standard range, and the insulation of the rubber covering the wire core Compared with the general copper-clad aluminum wire core, the cross-sectional area of __the wire core is small, and the insulation rubber level is not enough, the electrical performance is more stable and the short circuit is not easy to occur;
The second point: UL-certified power supply products are also the best choice when choosing similar products. Their effective conversion rate can ensure the safety and stability of the power supply load, and they can also work normally when the external ambient temperature is hot;
The third point: In terms of materials for the external protective structure of the display screen, most of the display products with higher fire ratings on the market are made of fire-resistant aluminum-plastic panels, which have excellent fire resistance and strong fire resistance. The aging performance is also very strong, the melting point temperature is 135°C, the decomposition temperature is _300°C, environmental protection performance, low smoke and halogen-free, conforms to SGS, flame retardancy B-S1, d0, t0, reference use standard UL94, GB/8624-2006. The aluminum-plastic panels of general outdoor display products age quickly with the impact of high temperature, rain and cold heat, so that in relatively humid climate seasons, rain and dew can easily penetrate into the interior of the screen, causing short circuits of electronic components and causing fires
Fourth point: there is another important part of the fireproof raw materials of the display screen, which is the plastic kit. The plastic kit is mainly the material used for the bottom shell of the unit module mask. The main raw material is PC glass fiber material with flame retardant function. Combustion function, it can not be deformed, brittle and cracked under high and low temperature and long-term use. At the same time, it can be used with glue with good sealing performance, which can effectively prevent rainwater from the external environment from penetrating into the interior and cause short circuit and fire.
In addition to the internal raw materials that will affect the fire protection effect, the external configuration and design are also very important, but the external configuration mainly involves the heat dissipation in the fire protection problem. When the display is working, it will be equipped with exhaust fans and air conditioners to cool down the inside of the screen. It is recommended to install 1P air conditioners every 8-10 square meters to ensure that the temperature in the screen remains normal and constant. If the air conditioner or exhaust fan is not properly configured, it will cause uneven heat dissipation, which will easily lead to safety hazards inside the screen due to temperature rise. At the same time, many LED companies simply simulated the test of spraying and waterproofing in the external environment when testing the protection level of the cabinet. The durability and strength of the waterproof effect have yet to be verified. Water seepage occurs, which is an important reason why outdoor display screens are prone to fire or have a short service life. When dealing with thunderstorms, the lightning arrester installed on the screen is also an essential tool to avoid lightning strikes and burn out the internal components of the screen. It can directly guide lightning into the ground without affecting the screen
All the above are the internal reasons of the display screen. Of course, we cannot ignore the human-made factors in the later maintenance process. For example, in the follow-up maintenance work, the operator did not follow the strict process flow reversed polarity, conductive objects left after operation, etc.), it is easy to cause a house fire
Similarly, in the lighting industry, the main cause of fires is due to irregular installation locations or improper use of materials. The main measures to prevent fires in lighting fixtures are to strictly control the distance from combustibles, standardize installation and do a good job of heat insulation. Protect
The exact cause of the Hong Kong hotel display fire incident remains to be investigated, but this incident should not lead to a negative attitude towards the application of LED display products in Hong Kong. Although the entire industry standard has not yet been established, the industry has done a good job There are still many LED companies in China. For example, the display screen products of Shenzhen Unilumin Technology have obtained the flame retardant and fire resistance test of building materials from the British Test Center BS476. These display screen products that meet the international certification standards are the best in the LED industry. We should Keep up with these leading model companies, demand ourselves with high quality and strict specifications, and guide the healthy development of the industry, so as to enhance the international competitiveness of the entire industry and move towards internationalization
With the rapid development of modern science and technology, my country's LED display industry continues to grow at a high speed, the scale of the industry continues to expand, and the technology continues to innovate. The guarantee of product quality can truly promote the creation of a company's brand and its long-term development. Enterprises must pay attention to products in order to survive. Quality, rather than the blind pursuit of profit maximization.
Explain in detail the potential safety hazards of outdoor LED electronic display screens
por Tiara Best (02/04/2024)
As a new type of outdoor advertising carrier, outdoor LED electronic display has become a new highlight of urban outdoor advertising due to its superior visual and sensory characteristics, and has attracted much attention. China's 50mm Flexible LED Mesh Display display industry has gone through ups and downs for 20 years. Today, the quality of LED displays produced in China has been recognized by the global market.However, the potential safety hazards of outdoor LED electronic display screens, especially the fire safety application technology of LED display screens, are the focus. Look at what factors will affect the safety and fire prevention of the display screen. The sudden fire incident at the Yijunchuo Hotel in Hong Kong on April 2, 2012 has sounded a wake-up call for the entire LED industry: while the industry is developing rapidly, LED There are still shortcomings in the field of display security application technology, and the standardization and standardization of LED products have been put on the agenda again.
The quality of display screen fire protection technology is mainly related to the display screen fire protection raw materials and box process.
Fireproof raw materials mainly include wires and power supplies used inside the display screen, fireproof materials for external protective structures and plastic kits:
The first point: In most display applications, the larger the unit area of __the display, the greater the power consumption, and there are higher requirements for the stability of the wire. Among many wire products, the use of wires that meet the requirements of the national standard can ensure their safety and stability. There are three requirements: the wire core is a copper wire conductive carrier, the tolerance of the cross-sectional area of __the wire core is within the standard range, and the insulation of the rubber covering the wire core Compared with the general copper-clad aluminum wire core, the cross-sectional area of __the wire core is small, and the insulation rubber level is not enough, the electrical performance is more stable and the short circuit is not easy to occur;
The second point: UL-certified power supply products are also the best choice when choosing similar products. Their effective conversion rate can ensure the safety and stability of the power supply load, and they can also work normally when the external ambient temperature is hot;
The third point: In terms of materials for the external protective structure of the display screen, most of the display products with higher fire ratings on the market are made of fire-resistant aluminum-plastic panels, which have excellent fire resistance and strong fire resistance. The aging performance is also very strong, the melting point temperature is 135°C, the decomposition temperature is _300°C, environmental protection performance, low smoke and halogen-free, conforms to SGS, flame retardancy B-S1, d0, t0, reference use standard UL94, GB/8624-2006. The aluminum-plastic panels of general outdoor display products age quickly with the impact of high temperature, rain and cold heat, so that in relatively humid climate seasons, rain and dew can easily penetrate into the interior of the screen, causing short circuits of electronic components and causing fires
Fourth point: there is another important part of the fireproof raw materials of the display screen, which is the plastic kit. The plastic kit is mainly the material used for the bottom shell of the unit module mask. The main raw material is PC glass fiber material with flame retardant function. Combustion function, it can not be deformed, brittle and cracked under high and low temperature and long-term use. At the same time, it can be used with glue with good sealing performance, which can effectively prevent rainwater from the external environment from penetrating into the interior and cause short circuit and fire.
In addition to the internal raw materials that will affect the fire protection effect, the external configuration and design are also very important, but the external configuration mainly involves the heat dissipation in the fire protection problem. When the display is working, it will be equipped with exhaust fans and air conditioners to cool down the inside of the screen. It is recommended to install 1P air conditioners every 8-10 square meters to ensure that the temperature in the screen remains normal and constant. If the air conditioner or exhaust fan is not properly configured, it will cause uneven heat dissipation, which will easily lead to safety hazards inside the screen due to temperature rise. At the same time, many LED companies simply simulated the test of spraying and waterproofing in the external environment when testing the protection level of the cabinet. The durability and strength of the waterproof effect have yet to be verified. Water seepage occurs, which is an important reason why outdoor display screens are prone to fire or have a short service life. When dealing with thunderstorms, the lightning arrester installed on the screen is also an essential tool to avoid lightning strikes and burn out the internal components of the screen. It can directly guide lightning into the ground without affecting the screen
All the above are the internal reasons of the display screen. Of course, we cannot ignore the human-made factors in the later maintenance process. For example, in the follow-up maintenance work, the operator did not follow the strict process flow reversed polarity, conductive objects left after operation, etc.), it is easy to cause a house fire
Similarly, in the lighting industry, the main cause of fires is due to irregular installation locations or improper use of materials. The main measures to prevent fires in lighting fixtures are to strictly control the distance from combustibles, standardize installation and do a good job of heat insulation. Protect
The exact cause of the Hong Kong hotel display fire incident remains to be investigated, but this incident should not lead to a negative attitude towards the application of LED display products in Hong Kong. Although the entire industry standard has not yet been established, the industry has done a good job There are still many LED companies in China. For example, the display screen products of Shenzhen Unilumin Technology have obtained the flame retardant and fire resistance test of building materials from the British Test Center BS476. These display screen products that meet the international certification standards are the best in the LED industry. We should Keep up with these leading model companies, demand ourselves with high quality and strict specifications, and guide the healthy development of the industry, so as to enhance the international competitiveness of the entire industry and move towards internationalization
With the rapid development of modern science and technology, my country's LED display industry continues to grow at a high speed, the scale of the industry continues to expand, and the technology continues to innovate. The guarantee of product quality can truly promote the creation of a company's brand and its long-term development. Enterprises must pay attention to products in order to survive. Quality, rather than the blind pursuit of profit maximization.