| 摘要 |
PROBLEM TO BE SOLVED: To enable to improve light extraction efficiency.SOLUTION: A lighting module includes a light source part and a light guide means 2 including an incident face 21 where light from the light source part enters and an emission surface 22 for emitting the light incident from the incident surface 21. The incident surface 21 is so inclined that an angle made with the emission surface 22 may become an acute angle. |
