Lighting device of steering wheel and assembling method thereof

A lighting apparatus of a steering wheel, the lighting apparatus comprising:

• a grip body forming a rim of the steering wheel and including a body groove portion formed in a shape in which the body groove portion is cut away along the rim;
• a bezel fitted to the body groove portion and assembled to the grip body so that the body groove portion is covered by the bezel, the bezel including a center portion provided with a light transmission hole;
• and
• a light emitting body assembled to the bezel so that the light emitting body overlaps the light transmission hole from between the body groove portion and the bezel, the light emitting body being configured to emit light through the light transmission hole,
• wherein an assembly groove which forms a border of the light transmission hole and which has a shape corresponding to a shape of the light emitting body is formed in a rear surface of the bezel, and
• wherein an assembly guide protrusion and an assembly guide groove are respectively formed in the assembly groove and the body groove portion that faces the assembly groove, the assembly guide protrusion is fitted to the assembly guide groove, and a fastener passes through and is coupled to the assembly guide protrusion and the assembly guide groove, so that the bezel and the grip body are coupled to each other.