Utilizes a high-strength die-cast aluminum housing and tempered glass cover,offering strong shock and impact resistance suitable for the vibrational tunnel environment.The core of the optical system lies in its precise asymmetric light distribution design,which effectively constrains and projects light onto the roadway,strictly limits glare,and achieves extremely high road surface uniformity.The luminaire is typically designed in a slender shape to reduce wind resistance and features a self-cleaning surface treatment to minimize dust accumulation.It boasts a high protection rating of IP65/IP66 or above,effectively resisting humidity,condensation,and exhaust corrosion inside tunnels.
The power range is wide,from 30W to over 200W,to meet the illuminance requirements for entrance zones(high brightness),transition zones(gradual brightness),and interior zones(stable brightness).Efficacy can reach 140-160 lm/W.Light distribution types strictly adhere to tunnel lighting standards like CIE 88:2004,categorized as symmetric and asymmetric(cutoff).Operating voltage is mostly AC220V or AC380V.It has a wide operating temperature range of-40°C to+50°C.The driver power supply is highly reliable,supports hot-swap replacement,and has a long Mean Time Between Failures(MTBF).
Used in all types of highway tunnels,subway tunnels,railway tunnels,and underpasses.Mounting methods are varied,including sidewall mounting(bracket or recessed),top suspension,or surface mounting.Design requires precise calculation of the length,luminaire power,spacing,and mounting angle for each lighting section based on tunnel design speed,traffic volume,and external ambient brightness curves.Intelligent control systems(e.g.,stepless dimming)can automatically adjust the tunnel brightness according to external natural light intensity and traffic flow,achieving"lighting on demand"and energy savings.
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