How Does Resource Saving in Tunnel Lighting Achieved by LED Tunnel Light?

The following factors may often be taken into account when designing tunnel lighting to conserve energy, enhance lighting effects, and guarantee driving safety and comfort:

1. LED tunnel lights’ brightness

The driver must wait a specific amount of time for his eyesight to adjust to the tunnel’s interior since the light outside the tunnel is much greater during the day than it is within. The term “adaptation lag phenomena” refers to this occurrence. “If there is not a suitable transition, a black hole phenomenon will happen, briefly impairing the driver’s ability to see, which poses certain safety risks. The most significant issue with tunnel illumination is the black hole effect, a visual issue that arises before entering a tunnel.

Due to this, entrance lighting, interior lighting, and exit lighting are the three main categories of tunnel LED tunnel lighting. The brightness of the daytime lighting at the tunnel entry should be chosen taking into account the brightness outside, the vehicle’s speed, the range of vision at the entrance, and the tunnel’s length. The goal of the threshold segment is to eliminate the “black hole” effect, and the illumination intensity is progressively dropped in the transition segment to give the driver time to adjust to the dark.

2. The uniformity of LED tunnel lights’ brightness

A good average brightness is necessary for effective visual function, but it is also important that the difference between the lowest brightness and the average brightness on the road surface be kept to a minimum. The bright portion of the field of view will become a source of glare if the brightness difference is too great, and the transition from brightness to darkness will have a stroboscopic effect that will impair vision. Also, fatigue levels might rise.

The longitudinal uniformity U1 is the ratio of the minimum road brightness to the highest road brightness on the lane axis, and the overall brightness uniformity U0 is the ratio of the minimum brightness to the average brightness on the road surface in the inner portion of the tunnel. For drivers using this lane, the “zebra effect,” or repeating light and dark bands on the road surface, will be particularly inconvenient. This issue not only threatens road safety but also human psyche. The “zebra effectmagnitude “‘s is typically assessed using the longitudinal uniformity.

3. LED tunnel lights’ glare

Glare develops when there is an excessively high brightness level or brightness contrast in the field of vision, which impairs vision or causes discomfort for the eyes. Oncoming car headlights, tunnel lighting fixtures, intense outside sunlight near tunnel exits, and other factors may cause glare in tunnel lighting. Glare will make it harder for individuals to see obstacles, endangering driving safety.

Cut-off lighting should be used in tunnels, and particular technological steps should be taken to minimize direct and reflected glare and provide diffuse reflection, allowing for extremely soft light entry into the human eye.

4. LED tunnel lights’ stroboscopic effect

Strobe describes how the driver is continually aroused by the shifts in light and shadow in a long tunnel as a result of the illuminators’ discontinuous placement. It has to do with how brightly light and dark change, how often light and dark change, and how long the stroboscopic effect lasts. These three have something to do with the optical properties of the lights that are being used, the vehicle’s speed, the length of the tunnel, and the distance at which the lamps must be installed. In general, the stroboscopic phenomena caused by LED tunnel lighting is acceptable when the strobe frequency is between 2.5 and 15 Hz.

5. Controlling the lighting of LED tunnel lights

The sophisticated lighting control approach, which ensures the visual conditions and satisfies the tunnel lighting needs, is a crucial strategy for achieving appropriate energy savings. The lighting control’s main function is to enable constant adjustment of the tunnel’s illumination level.

The brightness outside the tunnel entrance is much lower than normal due to overcast, wet, or dusk conditions, thus suitable steps should be made to minimize the degree of illumination at the entry to avoid wasting energy. Through different dimming or control systems, the illumination of the tunnel lighting environment or the opening and shutting of lights may be altered and regulated in accordance with parameters like day, night, and traffic flow.

The majority of foreign nations now utilize photosensitive devices, dimmable electronic rectifiers, etc. to create intelligent lighting systems, which lower the overall brightness of the tunnel’s lights and consume less energy while maintaining the same level of uniform tunnel brightness.

The ecologically friendly alloy materials with high strength and excellent toughness are used to create the LED tunnel light’s outer shell. The visible portion is made of strengthened tempered glass, which is rust-, corrosion-, dust-, and water-resistant. It has excellent anti-collision and impact resistance, a multi-channel shockproof design, and a high-tech surface spraying treatment that prevents the lamps from being damaged by a variety of close-range, high-intensity, high-frequency vibrations. It can also operate reliably for a long time in environments with high frequency vibration, humidity, and high temperatures, like workshops, roadbeds, and rails. It is compatible with electromagnetic fields well and won’t interfere with the power transmission network.