Automotive daytime running lights, includes a light source and reflecting plates arranged on a light path of the light source. A substrate is arranged near the reflecting plates. A plurality of reflecting cups is formed on a surface of the substrate. Every reflecting plate faces a corresponding reflecting cup. The reflecting plates can rotate around light source to change the light exiting from the light source. The invention uses a laser source with reflecting plates to make the automotive daytime running lights have high visibility and be aesthetic in appearance.

日行灯为车辆在白天行驶时更容易辨别的灯具，其作为一种警示灯而非照明灯来提高被视性，使路人更容易发现行驶中的汽车而降低车祸发生的机率。目前多数日行灯大都是采用LED光源为主，并且设计成一条直线的灯条形状，并且在LED上设有反射杯以调整LED发光光形。使用了LED技术的行车灯，不但能够满足特殊的亮度需求，而且节能效果得到了进一步的提升。然而常见的LED日行灯出光光场固定，可视性有限。