| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device which enables wide angle radiation.SOLUTION: A lighting device 1 according to the invention includes: light emitting elements 50; and an inner wall 64 which reflects direct light from the light emitting elements 50. Two axes, which are perpendicular to an optical axis 40 of each light emitting element 50 and are arranged perpendicular to each other, are referred to as a vertical axis 36 and a lateral axis 38. The inner wall 64 includes two protruding parts 68 which face each other sandwiching the light emitting element 50 when viewed from a direction of the optical axis 40. Each protruding part 68 has a top part 70 on the vertical axis 36 when viewed from the direction of the optical axis 40. A distance M1 between the protruding part 68 and the lateral axis 38 is the shortest at the top part 70 and a distance M2 between the protruding part 68 and the lateral axis 38 becomes longer toward a position that is away from the top part 70 along the lateral axis 38. |
