The invention relates to a mounting and protecting structure for an organic
light emitting diode (
OLED) screen of a
signal lamp. The mounting and protecting structure comprises a base and is characterized in that a guide rail type groove is formed in the base, and a
control circuit board is inserted in the guide rail type groove; an L-shaped platform is arranged on the upper side of the base, and the
OLED screen is placed on the L-shaped platform; a shell is arranged outside the base, and a connecting seat connected with the shell is arranged on the lower side of the base. The mounting and protecting structure has the advantages that the structure is simple, connection is reliable, assembling
process operation is easy, pre-tightening force is adjustable during assembling, and
stable fixation and effective protection of the
OLED screen and the
control circuit board of the OLED screen can be guaranteed.