What is the requirement for led tunnel light led tunnel light?

Guide: Do you know what is a led tunnel light? Presumably, many people know that a led tunnel light is a kind of tunnel light. It is applied to large-area floodlighting in various types of factories, engineering constructions, etc. Cityscapes, billboards, and building facades are used for landscaping. What is the lighting requirement of led tunnel lights? As a new era trend, led lights have replaced electric bulbs. Therefore, led tunnel lights are also more popular. Let’s take a closer look at what is a led tunnel light. Everyone should listen carefully. !

Led tunnel light

What is a led tunnel light

What is a led tunnel light? The considerations for led tunnel light design are length, line type, interior, road type, unmanned walkway, link road structure, design speed, traffic volume and type of vehicle, etc. Color, lighting, arrangement, lighting level, brightness outside the hole and human eye adaptation status, tunnel lighting design is to solve this series of problems.

What is a led tunnel light? Led tunnel light, energy saving is a requirement for light source, lighting, lighting methods, etc. Energy saving includes lighting design energy saving and management energy saving, among which lighting design energy saving is the most important energy saving measure, including adoption Innovative and reliable design concepts and reasonable standard values, as well as the use of high-efficiency light sources, high-efficiency lamps, increased light reflectance and lighting control energy saving. LED compared with traditional light source, the biggest advantage is energy saving and stability. Therefore, based on the advantages and characteristics of LED, improving the efficiency of LED chip and reasonable light distribution design to improve the overall performance of the lamp is an important problem that LED tunnel lighting needs to solve.

What is a led tunnel light? LED light source light efficiency is a basic indicator to measure the efficiency of its tunnel light source. According to the actual requirements of LED tunnel light, the light efficiency used must reach a certain level to meet the replacement of traditional road lighting source sodium lamp, gold The demand for halogen lamps.

What is the lighting requirement for led tunnel lights?

What are the lighting requirements for led tunnel lights, mainly in the following four points:

1. Problems in the process of approaching the tunnel

The black hole phenomenon is white, the motor vehicle driver's eyes have been adapted to the natural light illumination of up to 100000 lx and thousands of cd/m2 outdoors. When the eyes turn to the tunnel environment with brightness only a few cd/m2, the human eye has limited perception of the brightness difference and presents compliance. Hysteresis, you will see a black cave, and you can't identify the state. The phenomenon of seeing all black caves in a bright environment like this is called a black hole phenomenon. Once the black hole phenomenon appears, as the motor vehicle approaches the tunnel, the driver's visual interval is shortened and the driver cannot drive safely. The black hole phenomenon is a visual problem that occurs before entering the tunnel and is the most important problem in tunnel lighting. In order to avoid the occurrence of black hole phenomenon, sufficient brightness should be ensured from an interval at the beginning of the tunnel entrance, which is slightly longer than the safe braking interval of the motor vehicle.

Led tunnel light

When entering the tunnel, there is a large difference in brightness between the inside and the outside, and there is a delay in compliance. The driver's vision cannot quickly conform to the brightness of the tunnel, and it is difficult to see the inside of the tunnel. In order to avoid this situation, the brightness of the entrance of the tunnel should be slowed down with the visual compliance speed. The brightness should be smoothly transitioned, and the brightness should be stopped step by step, but the brightness ratio of the previous level and the latter level should not exceed 3:1, and 2m high. The brightness of the following walls should not be lower than the corresponding uniform road surface brightness.

2. Problems presented during the tunneling process

The brightness of the daylight in the tunnel is higher than that of the night road, and the brightness at night is lower than that of the day. Considering the exhaust emissions of vehicles in long tunnels with large traffic flow, the exhaust gas cannot dissipate rapidly to form smoke, absorb and scatter light, reduce visibility, and make visual recognition difficult. The headlights are greatly affected by automobile exhaust and cannot meet the visual recognition. Sexual demand, the front 100m road surface brightness is halved, usually with 2 times the brightness of road lighting to compensate for the impact of exhaust gas.

3. Problems when approaching the tunnel exit

After the exit, the external brightness is extremely high, the exit looks like a bright hole, showing severe glare, and the exit becomes a white cave. This is called a white hole phenomenon; with the white hole as the background, the motor vehicle becomes a black silhouette and is easily recognizable. However, it is difficult to see the silhouette of the small car and the large truck behind the large van. It is close to the exit of the tunnel with large traffic flow. In order to recognize the illumination of the vehicle in the same size, it is called exit lighting. The length of the illumination interval is several tens of meters.

4. Problems presented before leaving the tunnel at night

At night, before exiting from the Liangtang tunnel to the unlit road, the tunnel also became a black hole, and the line shape and obstacles of the road could not be seen. At this time, it should be on the road just out of the tunnel exit. In the interval that is greater than the safe brake interval and approximately equal to the number of seconds the motor vehicle travels, the road is stopped to reach an appropriate level of brightness.