The invention belongs to the technical field of
rail transit, and particularly relates to an LED
signal machine based on
rail transit and an
assembly thereof, comprising a
signal lamp body, a column, a mounting
assembly and a filtering
assembly; the light filtering assembly comprises a mounting plate and a light filtering seat fixedly mounted on the mounting plate, a
light filter lens is mounted on the surface of the light filtering seat, and an annular seat connected with the mounting hole in a matched manner is arranged on the light filtering seat; an annular shell is fixedly connected to the
signal lamp body, an
airflow channel is formed in the light filtering base, an air guide
pipe matched with an air outlet of the
airflow channel is fixedly connected to the outer wall of the annular shell, and a plurality of air outlet holes are formed in the surface of the annular base. The light filtering assembly is detachably connected with the
signal lamp body through the mounting plate, the locking frame and other structures, directional flow can be formed by natural wind or forced
airflow through the airflow channel arranged in the light filtering base, the wind scooper and the wind guide
pipe arranged on the annular shell, and the light filtering assembly has the advantages of being efficient in heat dissipation, automatic in cleaning and convenient and fast to maintain.