Display device for a push button assembly

A display device for a push button assembly comprising:

• a push button having a case-shape button outer body provided in the front surface thereof with a window, a button inner body fitted into the bottom opening of said button outer body, guide grooves formed in the opposite inner lateral sides of said button outer body, and side grooves formed in both lateral sides of said button inner body;
• a display plate housed in said push button with the display surface thereof faced to said window;
• a support inserted into said push button with a pair of parallel leg members of said support slideably inserted into said side grooves of said button inner body, the end portions of said leg members which are extended to the outside of said push button, being securely fixed to the frame of said push button assembly;
• and
• at least one shutter rotatably connected to the portions of the support which are inserted into said push button, and adapted to be rotated with the pivoted ends of said shutter guided by said guide grooves, between a first position wherein said display surface is screened from said window and a second position wherein said display surface is exposed to said window, responsively to the axial relative movement of said push button with said support.