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发明授权
CN101907256B 车辆用灯具 有权

车辆用灯具
摘要：
本发明涉及车辆用灯具，其课题在于，平衡良好地分配来自LED光源的光，以少量光使得图案配光部外观良好地发光，以充分量光使得功能配光部明亮地发光。在侧方向指示灯(1)中，在导光透镜(3)的基端安装LED光源(8)。使得导光透镜的前端朝车辆后方弯曲，在弯曲部形成由漫射光台阶(10)构成的功能配光部(11)，使得来自LED光源的光向车辆侧方漫射。在LED光源和功能配光部之间的图案配光部(12)中，使得线形的光学台阶(14)形成在导光透镜的后面，向着透镜长度方向延伸，在光学台阶上刻设多条槽部(15)。使得来自LED光源朝着功能配光部的一部分光在光学台阶向车辆前方反射，同时，在槽部(15)周边散射，形成线状发光部和点状发光部混杂的新颖的配光图案。
摘要（英）：

In a side turn signal lamp, an LED light source (8) is mounted to a base end of a light guide lens (3). A distal end of the light guide lens (3) curves toward the rear of a vehicle and a functional light distribution portion (11) including light diffusion steps (10) is formed in a curved portion, so that light from the LED light source (8) is diffused toward a side of the vehicle. In a design light distribution portion (12) between the LED light source (8) and the functional light distribution portion (11), a linear optical step (14) is formed on a rear surface of the light guide lens (3) so as to extend in a longitudinal direction of the lens. A portion of light headed from the LED light source (8) toward the functional light distribution portion (11) is reflected by the optical step (14) in front of the vehicle and diffused around the groove portion (15).

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