PUSH BUTTON SWITCH Russian patent published in 2010 - IPC H01H13/02 

FIELD: electricity.

SUBSTANCE: push button switch is consisted of a body, circuit board with light-emitting sources, light conduit made from transparent material with open-end hole made around push button and other holes for light-emitting sources, and film with formed push button. Holes in light conduit for light-emitting sources are of spherical shape. Surfaces tilted at close to direct angle to dispersion angle generatrix of light-emitting sources are available in the area of open-end hole around light conduit. The push button is situated below the level of the body and represented with adjoining to each other mask and film having coaxial spherical surfaces mounted on them. The circuit board contains switch with reflecting surface. The switch is located outsides the area of dispersion. The film may be made as dispersive.

EFFECT: improved reliability of device operation in complicated climatic conditions and extended life cycle; stable operation and simplified technology, design and reduced costs of production outfit.

2 cl, 1 dwg