Lighting device

A lighting device comprising:

• a light source;
• and
• a display part that displays a first design on a front-side surface of the display part by transmitting light forward in a shape of the first design, the light being emitted by the light source, wherein
• the display part includes:
• a front-side part that includes the front-side surface and a first portion that transmits light in the shape of the first design;
• and
• a light guide that is located behind the front-side part and transmits the light from the light source toward the front-side part,
• the light source is located at a position different from the first portion of the front-side part in a plan view of the front-side surface,
• the light guide includes a portion that is located at a position different from the light source and overlapping with the first portion of the front-side part in the plan view of the front-side surface, the portion having a thickness that decreases with distance from the light source, and
• the light guide includes, on a back-side surface of the portion having the thickness that decreases with distance from the light source, a protrusion including a light incidence surface on which the light from the light source is incident at an incident angle that is a predetermined angle.