A lighting device, comprising: a light source portion having at least one light source; a light guide portion having a larger thickness than a height of a light emitting surface of the light source and irradiated by an incident beam of the light source from a side; and a three-dimensional effect forming portion provided inside the light guide portion on a first surface of the light guide portion or on a second surface opposite to the first surface, wherein the three-dimensional effect forming portion comprises multiple patterns sequentially arranged and having respective inclined surfaces with inclined angles with respect to the first surface, wherein the multiple patterns are adapted to guide light passing along the light guide portion into a first surface direction toward which the first surface looks, or a second surface direction toward which the second surface looks by refraction and reflection from the inclined surfaces, and wherein a pattern extension direction of the respective multiple pattern of the three-dimensional effect forming portion is designed to guide light emitted from the light source in the light guide portion to implement line shaped beams of a first path crossing at right angles to respective pattern extension directions of the multiple patterns, the line shaped beams having a three-dimensional effect in a thickness direction of the light guide portion, and wherein the pattern extension direction is a direction in which a straight line formed by two adjacent inclined surfaces of the three-dimensional effect forming portion extends, or a direction in which a tangent line in contact with a curved line formed by two adjacent inclined surfaces of the three-dimensional effect forming portion extends, and characterized in that the three-dimensional effect forming portion is provided as a pattern layer bonded to the first surface. a light source portion having at least one light source; a light guide portion having a larger thickness than a height of a light emitting surface of the light source and irradiated by an incident beam of the light source from a side; and a three-dimensional effect forming portion provided inside the light guide portion on a first surface of the light guide portion or on a second surface opposite to the first surface, wherein the three-dimensional effect forming portion comprises multiple patterns sequentially arranged and having respective inclined surfaces with inclined angles with respect to the first surface, wherein the multiple patterns are adapted to guide light passing along the light guide portion into a first surface direction toward which the first surface looks, or a second surface direction toward which the second surface looks by refraction and reflection from the inclined surfaces, and wherein a pattern extension direction of the respective multiple pattern of the three-dimensional effect forming portion is designed to guide light emitted from the light source in the light guide portion to implement line shaped beams of a first path crossing at right angles to respective pattern extension directions of the multiple patterns, the line shaped beams having a three-dimensional effect in a thickness direction of the light guide portion, and wherein the pattern extension direction is a direction in which a straight line formed by two adjacent inclined surfaces of the three-dimensional effect forming portion extends, or a direction in which a tangent line in contact with a curved line formed by two adjacent inclined surfaces of the three-dimensional effect forming portion extends, and characterized in that the three-dimensional effect forming portion is provided as a pattern layer bonded to the first surface.