A lighting unit body comprises: a light source; and shaped-members, in which a housing portion in which the light source is disposed, reflective surfaces for reflecting light from the light source, and an emission outlet for emitting the light from the reflective surfaces are respectively formed in the longitudinal direction. When a position at which the emission outlet is disposed is defined as forward and a direction orthogonal to the longitudinal direction is defined as a front-to-rear direction, and a direction orthogonal both to the longitudinal direction and the front-to-rear direction is defined as a left-to-right direction, then the emission outlet is formed in a front portion of the reflective surfaces, and the housing portion is formed in a rear portion of the reflective surfaces directed obliquely rearward at a predefined inclined angle on one of left or right side. The predefined inclined angle is an angle that inhibits visual observation of the light source from the front of the emission outlet, and the left-to-right direction position at which the light source is disposed is included in the left-to-right direction position at which the emission outlet is located.