With the maturity of LED and reflective film technology, Tunnel Photoelectric Solar Traffic Signs has achieved rapid development and fundamentally overcome the limitations of the above aspects.
Detailed features (1) Thin body and light weight. (2) The brightness decays slowly. (3) Combination of active and passive lighting.
Thin and light, easy to hang
The space in the tunnel is limited, and it is inconvenient to use thick brackets. The electro-optic signs are required to be thin and light, and easy to hang. The development and application of new LED technology just solved this problem.
LED lights are also called light-emitting diodes. Compared with other light sources, a single low-power LED consumes very little power and has high photoelectric conversion efficiency. From blue to red, LED lights come in many colors, and there is a special color of white. Our electro-optic Solar Traffic Signs mainly use white LED arrays.
The new light source is mainly composed of LED, light guide plate, optical diaphragm, frame and so on. It has the characteristics of high brightness, long life and uniform light emission.
According to the position of the light source, it can be divided into side-light type and direct-light type (bottom backlight type). The LED edge light type is mainly used in the tunnel electric solar traffic signs.
Here is a brief introduction to its features:
Edge-lit type: A light source made by setting LEDs on the side of a specially designed light guide plate. According to the needs of actual use, it can also be made into a double-sided type, or even a three-sided type. Edge-lit backlights can generally be made very thin.
The role of the light guide plate is to guide the scattering direction of light, which is used to improve the brightness of the panel and ensure the uniformity of the panel brightness. The quality of the light guide plate has a great influence on the backlight plate. It is one of the key technologies. Regardless of the thickness of the light guide plate of the bracket, which is 2-3mm, the thickness of the electro-optic sign plus the bracket, reflective film, and mask is made into a finished product, and the thickness is only about 10MM. Very convenient to hang on the side wall of the tunnel.
The brightness decays slowly, which is convenient for long-term work.
The photoelectric signs used in tunnels need to be hung for a long time, and the service life should be more than five years. What factors affect the brightness attenuation of electro-optical Solar Traffic Signs? There are three main factors: the quality of the chip inside the LED, the working current of the LED, and the heat dissipation of the LED .
