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 1.55 billion yuan, an increase of 27.6%. In recent years, driven by the country's policy support for downstream application demand, the domestic LED industry has developed rapidly, forming a relatively complete LED industry chain system, and the industry has set off a construction boom. The application field of the product industry is gradually expanding. In the field of traffic safety, LED display applications are becoming more and more popular, and they are fully acting as assistants for intelligent transportation.
Industry Development: Industry Chain Layout and Market Development
LED display as the main force in the field of security monitoring and display, the market development directly affects the direction of the security industry. Outdoor LED is an incomparable advantage in the development of intelligent transportation in the LED industry. It is an important development direction in the LED field. With the unprecedented prosperity of LED technology, LED display products have attracted much attention, widely used in commercial advertising, live broadcast, traffic guidance, stage interpretation and other fields. Up to now, LED display has shown some of its characteristics:
1. The overall development of the industry has reached the scale 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 the products have been significantly improved. The mainland LED display application enterprises have performed well in major projects and key projects, and their capabilities in the international market competition and large-scale display system engineering have been significantly improved.
2. The industry's technological progress is obvious, and technological innovation has played an active role in leading and promoting the development of the industry.
The overall technical level of the LED display application industry is basically synchronized with the international development. In the past two years, innovative products have been continuously introduced, the technological innovation in the industry is active, and the product technology development capability is continuously strengthened. Technology development, technical support and technical assurance capabilities to meet specific application needs have been enhanced, and key technologies and mainstream products have matured.
3. The development of industry is standardized and intensive
The LED Display Industry Association has been actively promoting product technology exchange and standardization work for many years. It has effectively promoted the standardized development of industrial technology products through product technology standards and product technology testing. Standardization and standardization have promoted the improvement of industrialization level, 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 of the development of China's LED display application industry is 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. The industry has generally changed from the “olive shape†to the “dumbbell shapeâ€.
4. The development of LED upstream industry has obvious promotion effect on the development of display application industry.
The LED industry chain achieves positive interaction between upstream and downstream, new products and new technologies are rapidly applied and applied. Based on the development of LED chip materials, driver ICs, and control technologies, many enterprises in the industry are in LED integrated applications, semiconductor lighting, lighting and lighting projects. And other aspects have formed a certain technical foundation and production engineering basis. On the basis of traditional LED large-screen display technology and products, the share of LED display products in the industrial market has increased year by year.
5. The major activities have a significant effect on the development of the industry.
In the industrial growth in 2008 and 2009, the driving factors of major events such as the Beijing Olympic Games, the 60th anniversary of the National Day, and the Shanghai World Expo cannot be ignored. On the one hand, we must have a rational understanding on the one hand, and on the other hand, we should take this as an opportunity to seriously sum up experience, actively promote technological innovation achievements, and expand new markets in order to maintain the sustainable development of the industry.
6. The industrial structure is constantly improving and rationalizing in the adjustment
The specialized division of labor in the industry is becoming more and more obvious, and the industrial chain of LED display application products has basically taken shape, laying a good foundation for the continuous upgrading of the industry. At the same time of competition, the division of labor and cooperation in specialized production, technology development, engineering services and other aspects have been reflected in the industry. Market segmentation and outstanding core competitiveness have become new concerns of many enterprises.
Smart application: traffic-induced display helps intelligent traffic
The production and application of LED display screens include semiconductor optoelectronic device technology, electronic circuit technology, integrated circuit technology, information image processing and transmission technology, computer network communication technology, and technologies related to electronic product manufacturing and electronic product installation engineering. LED display screens of different types and different performances have large differences in material composition, manufacturing process and control technology, and the technical connotations are obviously different. Even for products of the same type and performance, the technologies used by different manufacturers are also very large. different. Traffic-induced information outdoor LED display, according to the requirements of road traffic management and the actual situation of traffic guidance information release display, has the following characteristics in specific use functions:
1, high brightness, reasonable perspective
The release of road traffic guidance information is mainly for driving vehicles on the road. The viewing angle of the display screen is not high, and it is generally about ±35° on urban roads. The traffic-induced outdoor LED display works continuously for 24 hours. In the case of direct sunlight on the surface of the display, the display should be clearly visible and therefore require a higher brightness. Under normal circumstances, the visual distance requirement is about 200m.
2, the display color is mainly red, green and yellow
The release of traffic information is mainly for vehicles in dynamic driving. The travel time of vehicles in the visible distance is very short. Therefore, complicated multi-gray graphics and animation content should be avoided. The display content is mostly text and simple. Graphic logo. Considering the common colors of traffic sign signals, red, green and yellow display screens are usually used. Red, green, and yellow colors can display prohibitions, indications, and warnings, respectively.
3, the display brightness is automatically adjustable
Traffic-induced information The outdoor LED display works 24 hours a day, and the ambient illumination varies greatly. It is necessary to ensure that the display is clearly visible when the maximum ambient illumination is on a sunny day, and 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 automatic adjustment of the brightness of the traffic-induced outdoor LED display should be above 8th.
4, working around the clock, complex environmental conditions
The traffic-induced LED display works under completely outdoor conditions, and the environmental conditions are complex. The requirements for temperature, power supply, rain, moisture, corrosion, and lightning strike are complex, and high reliability is required. Take specific targeted measures. In the structural design of the traffic-inducing information outdoor LED display, it is necessary to pay attention to the heat dissipation, waterproof and dustproof of the display body. The unit cabinet structure design of the display screen should meet the IP65 protection level requirements.
5, remote control, intelligent detection
The traffic-induced LED display installation location is distributed over a large area and is generally controlled remotely by the control center. It is difficult to routinely monitor and detect the display, so it must have corresponding remote control and fault diagnosis and detection functions. Generally, the temperature of the cabinet should be automatically detected and adjusted to ensure that the LED works within an appropriate temperature range to ensure the service life of the display.
6, high security, real-time, accuracy, reliability requirements
Traffic guidance information is released to the public, and the requirements for real-time, accuracy and reliability are high. In order to ensure the stability and reliability of the traffic-induced LED display, the display control system and software. The selection and quality requirements of LED pixel tubes, integrated circuits, etc. should be based on stability and reliability. At the same time, traffic-induced LED displays generally work in a network environment, and public information is released, which also has high requirements for security.
In addition, the traffic-induced outdoor LED display system must also consider 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 principle of OLED is to sandwich the organic light-emitting layer between the two electrodes. When the positive and negative electrons meet in this organic material, it will emit light. The OLED screen has strong anti-interference and can still be displayed under the sunlight. Clear image. OLEDs do not contain harmful substances used in traditional display devices such as lead, mercury, and cadmium, and their energy consumption is far lower than that of display devices such as LCD and plasma. It has become a globally recognized green low-carbon display device.
1, thinner, clearer, brighter
The unique production process has resulted in many advantages of thin thickness, light weight and low manufacturing cost of OLED modules. At the same time, specially developed drive electronics and precision-designed panel structure enable the display to achieve high resolution, high brightness and high contrast while maintaining lightness and thinness. OLED is self-illuminating and does not require backlighting. Therefore, OLED display technology consumes less energy than LCD, but the light output is more than three times that of LCD.
2, can achieve ring, strip, curved surface and other heterosexual installation
The OLED display system adopts a unique modular structure. Through such a module, a display system of any size or shape can be customized, and various aspect ratio screens (belt, ring type, vertical type, spherical shape, etc.) are designed according to user requirements. ), to achieve a true seamless mosaic large-screen display concept, in the past is considered to be unrealistic space and occasions, and now use the modular nature of OLED can also build large display devices, creating unlimited possibilities for image display.
At present, domestic leading manufacturers including China Television News CECV have actively carried out research and development of OLED displays, and are determined to put mature commercial OLED products on the market in the near future.
Conclusion:
The LED display is an advertising video display product with high brightness, low operating voltage, low power consumption, long life, impact resistance and stable performance. The LED display application market is developing rapidly. Due to the high maturity of the product itself and the stable performance, it meets the stability requirements of road security monitoring equipment. It is believed that with the development of intelligent transportation in smart cities, the security application prospects of LED displays will be more extensive.
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