Light guide illumination mechanism in tunnel

A light guide lighting mechanism in a tunnel comprises a light collecting assembly. The light collecting assembly comprises a spherical light collecting cover and a focusing adjusting assembly connected with the spherical light collecting cover. A light guide assembly; the light guide assembly comprises a conical cover body connected with the focusing adjusting assembly and a light guide pipe set connected with the conical cover body. An astigmatism lighting device; the scattered light lighting device comprises a plurality of arc-shaped lampshades which are arranged and assembled at the top of the tunnel; a light-transmitting plate is arranged on the face, facing the tunnel, of each arc-shaped lampshade, and a light reflecting layer is arranged on the top of each arc-shaped lampshade. According to the tunnel lighting device, external sunlight is gathered and collected through the spherical lighting cover, a light source is expanded and collected through the focusing adjusting assembly, the light source is tra