PURPOSE: To make the light emitting part of the pilot lamp easily visible and to make the lighting emitting part visible from a diagonal direction as well by forming a support for holding the light emitting part of the pilot lamp to a circular truncated cone shape formed of a light opaque part.

CONSTITUTION: The holder 12 is formed by projecting the projecting parts 12A of the circular truncated cone shape consisting of the same material at plural points on the light transmitting plate material toward the inner side of a case 11. The support 13 holding the light emitting part 14A of the pilot lamp 14 is the circular truncated cone shape of the resembling shape to be housed in the space among plural pieces of the circular truncated cone-shaped projecting parts of the holder 12. The light opaque material is used for this support. The light advancing rectilinearly, as shown by an alternate long and short dash line, and the refracted light reflected by the lateral peripheral wall surface of the support 13, as shown by an alternate long and two short dashes lines, of the light emitted from the light emitting part 14A, are emitted to the outside of the case 11 when the light emitting part 14A emits the light. Further, the refracted light by reflection is increased it a coating material having excellent light reflectivity (for example, silver white coating material) is applied on the lateral peripheral wall surface of the support 13 in order to more effectively execute the reflection. Foil (for example, aluminum foil) may be used in place of the coating material.