VEHICULAR LIGHTING FIXTURE

To provide a vehicular lighting fixture for improving the visibility of itself while securing a thinner shape.SOLUTION: The vehicular lighting fixture includes a light source for emitting light, and a plate-like control emission part for emitting the light emitted from the light source in the state of controlling it, the control emission part having one face in the thickness direction, formed as a reflection surface having a plurality of curve-shaped control steps to give internal reflection to the light emitted from the light source, and the other face in the thickness direction, formed as an emission surface from which light reflected from the reflection surface is emitted, the reflection surface being provided with a plurality of control regions having the control steps and arranged in predetermined rows, at least part of the plurality of control regions having the control steps whose curvature factors are smaller sequentially in the direction of the predetermined rows.SELECTED DRAWING: Figure 7 【課題】 薄型化を確保した上で被視認性の向上を図る。【解決手段】 光を出射する光源と、光源から出射された光を制御した状態で出射する板状の制御出射部とを備え、制御出射部は厚み方向における一方の面が曲面状の複数の制御ステップを有し光源から出射された光を内面反射する反射面として形成され厚み方向における他方の面が反射面で反射された光が出射される出射面として形成され、反射面には制御ステップを有し所定の配列で並ぶ複数の制御領域が形成され、複数の制御領域の少なくとも一部は所定の並び方向において順に制御ステップの曲率が小さくされた。【選択図】図７