In the area of ​​traffic safety, LED display applications are becoming more and more popular, and they are fully working as effective assistants in intelligent transportation. The popularity of LED display applications has deepened the depth of the vertical promotion of the security business, making the road security perfect. In 2011, China's LED outdoor electronic display advertising market reached 1.215 billion yuan, an increase of 35.5% over the previous year. According to statistics, the size of this advertising market is expected to reach RMB1.55 billion, an increase of 27.6% year-on-year. In recent years, driven by the country's policy to support downstream application requirements, the domestic LED industry has developed rapidly and formed a relatively complete LED industry chain system.
Industry Development: Industrial Chain Layout and Market Development LED display screens are the key players in the field of security monitoring and display. The market development situation directly affects the direction of the security industry. Outdoor LED is the LED industry has an unparalleled advantage in the development of intelligent transportation, is an important direction of development of the LED field. With the unprecedented prosperity of LED technology, LED display products have attracted much attention and are widely used in commercial advertising, live broadcasting, traffic guidance, stage deduction and other fields. Since its development, LED displays have exhibited some of its features:
1. The overall development of the industry has reached a level of scale The main products of China's LED display industry not only occupy an absolute market in the mainland, but also occupy a certain share in the global market, forming a stable export. The overall quality and reliability of products have been significantly improved. Mainland LED display application companies have performed outstandingly in the construction of major projects and key projects, and have significantly improved their capabilities in international market competition and the implementation of large-scale display system projects.
2. Significant technical progress in the industry, and technological innovation has played an active role in promoting and promoting the development of the industry. The overall technical level of the LED display industry is basically synchronized with that of the international market. In the past two years, innovative products have been introduced, active technological innovation in the industry, and product technology. The development capability has been continuously strengthened. Technology development, technical support, and technology assurance capabilities that meet the needs of specific applications have been enhanced, and key technologies and mainstream products have matured.
3, industry development was standardized, intensive characteristics LED display industry associations have been actively promoting product technology exchanges for many years and carry out standardization work, through product technology standards, product technology testing and other means to effectively promote the standardization of industrial technology products. Standardization and standardization have boosted the level of industrialization, and the accumulation effect of industrial layout has been reflected. For example, Shenzhen has concentrated more large-scale enterprises. In recent years, an important feature in the development of China's LED display application industry has been the significant increase in the number of large-scale enterprises, the decline in the number of medium-sized enterprises, and the increase in the number of small-scale enterprises. In general, the industry has changed from the "olive shape" to the "dumb-bell shape."
4. LED upstream industry development has a positive effect on the development of the display application industry. Obvious interaction between the upstream and downstream of the LED industry chain has been achieved. The promotion and application of new products and new technologies is rapid. Based on the development of LED chip materials, driver ICs, and control technologies, the industry Many companies in the LED integrated application, semiconductor lighting, lighting and lighting projects have formed a certain technical foundation and production engineering foundation. Based on traditional LED large-screen display technologies and products, the share of LED display products in the industrial market has increased year by year.
5. Significant effect of major activities on the development of industrial development In the industrial growth of 2008 and 2009, the pulling factors of the Beijing Olympic Games, the celebration of the 60th anniversary of the National Day, the Shanghai World Expo and other major activities cannot be ignored. In this regard, on the one hand, we must have a rational understanding, and on the other hand we must use this as an opportunity to earnestly sum up experience, actively promote the achievements of technological innovation, and develop new markets so as to maintain the sustainable development of the industry.
6. The industry structure is constantly improving in the adjustment and rationalization The professional division of labor in the industry is becoming increasingly obvious. The industry chain of LED display application products is basically formed, laying a good foundation for the continuous upgrading of the industry. At the same time of competition, division of labor and cooperation in specialized production, technology development, and engineering services are reflected in the industry. Segmenting markets and highlighting core competitiveness have become new concerns for many companies.
Smart Application: Traffic Induced Display Boosts the Production and Application of Intelligent Traffic LED Display Involving Semiconductor Optoelectronic Device Technology, Electronic Circuit Technology, Integrated Circuit Technology, Information Image Processing and Transmission Technology, Computer Network Communication Technology, and Electronic Product Manufacturing and Electronic Product Installation Engineering Related technologies, etc. The LED display screens of different types and performances differ greatly in terms of material composition, manufacturing process, and control technology. The technical connotation differs significantly. Even if the products of the same type and performance are used, the technologies used by different manufacturers are quite different. different. Traffic guidance information outdoor LED display, according to the requirements of road traffic management and traffic guidance information released to show the actual situation, in the specific use of features have the following characteristics:
1. High-brightness and reasonable perspective The release of road traffic guidance information is mainly aimed at moving vehicles on the road, and the viewing angle of the display screen is not high, and it can reach about ±35° on a city road. Traffic-induced outdoor LED display works continuously for 24 hours. In the case of direct sunlight on the surface of the display, the contents of the display should be clearly visible. Therefore, higher brightness is required. Under normal circumstances, the visual distance is about 200m.
2. The display of color is mainly red, green and yellow. The release of traffic information is mainly oriented to vehicles in dynamic driving. The vehicle's staying time within the visible distance is very short. Therefore, complicated multi-grayscale graphics and animations should be avoided. Content, the display content is mostly text and simple graphic signs. Considering the common colors of traffic sign signals, red, green and yellow three-color screens are usually used. Red, green, and yellow bell colors can display prohibitions, instruction suggestions, and warning messages, respectively.
3. The display brightness is automatically adjustable. The traffic guidance information outdoor LED display works 24 hours a day, and the ambient illumination varies greatly. It is necessary to ensure that the display screen is clearly visible during the day's maximum ambient illumination, but also to avoid the "glare" phenomenon on rainy days and nights. The brightness of the LED display needs to be automatically adjusted according to the ambient illumination. Under normal circumstances, the brightness of the traffic-induced outdoor LED display should be automatically adjusted to more than 8 levels.
4, all-weather work, complex environmental conditions led traffic LED display in complete outdoor conditions, the environment is complex, in the temperature, power supply, rain, moisture, corrosion, lightning and other aspects of the complex requirements, but also very High reliability requires specific targeted measures. In the structural design of outdoor LED display screens for traffic-inducing information, attention should be paid to the heat dissipation, waterproof, and dust prevention of the display screen. The design of the unit box structure of the display should meet the IP65 protection class requirements.
5, remote control, intelligent detection of traffic guidance LED display installation location is distributed in a larger area, generally controlled by the control center. The daily maintenance and detection of the display screen is difficult, so it must have the corresponding remote control and fault diagnosis and detection functions. Generally, the temperature of the box should be able to be automatically detected and adjusted so that the LED can work within an appropriate temperature range to ensure the service life of the display screen.
6, security, real-time, accuracy, reliability requirements of high traffic guidance information released to the public, real-time, accuracy and reliability requirements higher. In order to ensure the stability and reliability of the traffic-induced LED display, display control systems and software are on display. The selection and quality requirements for LED pixel tubes, integrated circuits, etc. should be based on stability and reliability. At the same time, traffic-induced LED display screens generally work in the network environment and publish public information, which also requires high security.
In addition, traffic-induced outdoor LED display systems must also consider various factors such as placement location, display type, technical parameters, system control, product structure, and supporting engineering.
Future development: OLED display low-carbon application technology is better The full name of the OLED is OrganicLightEmittingDiode, Chinese for organic light-emitting diodes. The principle is that the organic light-emitting layer is sandwiched between the two electrodes. When positive and negative electrons meet in this organic material, they will emit light. The OLED screen has strong anti-interference, and can still show clearness under the sunlight. Image. OLED does not contain harmful substances used in traditional display devices such as lead, mercury, and cadmium, and its energy consumption is far lower than LCD, plasma, and other display devices, becoming a globally recognized green low-carbon display device.
1. The thinner, clearer, brighter and unique production process has created many advantages of thin, light weight and low manufacturing cost of OLED modules. At the same time, specially developed drive electronics and precision-designed panel structures enable the display to achieve high resolution, high brightness, and high contrast while maintaining a thin and light appearance. OLEDs are self-illuminating and do not require backlights. Therefore, OLED display technology consumes less energy than LCDs, but its light output is more than three times that of LCDs.
2. It can realize the installation of OLED display systems such as rings, ribbons, and curved surfaces. The OLED display system adopts a unique modular structure. Through this module, any display system of any size or shape can be customized, and various aspect ratios can be designed according to user requirements. The screen (band, ring, vertical, spherical, etc.) to achieve a truly seamless large-screen display concept has been considered in the past as an impractical space and occasion, and can now be constructed using the modular features of OLEDs. The display device creates unlimited possibilities for video display.
At present, leading domestic manufacturers, including CECV, have actively developed OLED displays and are determined to bring mature commercial OLED products to market in the near future.
Conclusion:
LED display is an advertising video display product with high brightness, low operating voltage, low power consumption, long life, impact resistance and stable performance. LED display application market is developing rapidly. Due to the highly mature technology and stable performance of the product itself, it meets the stability requirements of road safety monitoring equipment. It is believed that with the development of intelligent transportation in smart cities, the application prospect of LED display screens will be even broader.
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