Tunnel illumination apparatus and tunnel illumination method

摘要

PROBLEM TO BE SOLVED: To provide a tunnel lighting technique such that comfort during a travel is high.SOLUTION: The section from the entrance 11 to the exit 12 of a tunnel 10 is divided into a first lighting section K11, a second lighting section K12, and a third lighting section K13, a correlation color temperature T11, a correlation color temperature T12, and a correlation color temperature T13 between adjacent sections are set to be different, and the correlation color temperature T11, correlation color temperature T12, and correlation color temperature T13 are set to have positive correlations with illuminance S11, illuminance S12, and illuminance S13 of the respective sections shown by an illuminance distribution line 112, thereby improving the comfort during the travel.