Abstract: An illumination-type push button device including a board for light source, a diffusing lens having a dome shape, a first light source portion and a second light source portion, and a light guide member, where the diffusing lens is configured such that light of the second light source portion enters the diffusing lens from a back surface, and is diffused from a front surface of the diffusing lens, thereby being irradiated to an outside of the device, and the light guide member is configured such that light of the first light source portion enters the light guide member from an incident surface opposed to the first light source portion on the one end side of the light guide member to be guided inside the light guide member, and exits from an outgoing surface on the other end side of the light guide member, thereby being irradiated to the outside.

Abstract: An illumination-type push button device, including a light source portion and an optical member in which one or more lens portions each made of an outgoing surface on a front side and an incident surface on a back side are formed, the optical member configured to receive, from the incident surfaces, light emitted from the light source portion, and to emit the incident light to an outside of the device from the outgoing surfaces, wherein in the outgoing surface of one of the lens portions of the optical member, a single convex portion is formed, the single convex portion being convex in a light exit direction, and in the incident surface of one of the lens portions of the optical member, a plurality of convex portions are formed, the plurality of convex portions being convex reverse to the light incident direction, and smaller than the convex portion of the outgoing surface.

Abstract: An illumination-type push button device including a board for light source, a diffusing lens having a dome shape, a first light source portion and a second light source portion, and a light guide member, where the diffusing lens is configured such that light of the second light source portion enters the diffusing lens from a back surface, and is diffused from a front surface of the diffusing lens, thereby being irradiated to an outside of the device, and the light guide member is configured such that light of the first light source portion enters the light guide member from an incident surface opposed to the first light source portion on the one end side of the light guide member to be guided inside the light guide member, and exits from an outgoing surface on the other end side of the light guide member, thereby being irradiated to the outside.

Abstract: An illumination-type push button device, including a light source portion and an optical member in which one or more lens portions each made of an outgoing surface on a front side and an incident surface on a back side are formed, the optical member configured to receive, from the incident surfaces, light emitted from the light source portion, and to emit the incident light to an outside of the device from the outgoing surfaces, wherein in the outgoing surface of one of the lens portions of the optical member, a single convex portion is formed, the single convex portion being convex in a light exit direction, and in the incident surface of one of the lens portions of the optical member, a plurality of convex portions are formed, the plurality of convex portions being convex reverse to the light incident direction, and smaller than the convex portion of the outgoing surface.