Relay

摘要

A relay has a case, a relay body disposed in the case, a light source disposed in the case that emits light in accordance with an operation of the relay body, a light guide path which that receives, via a first end surface, the light emitted from the light source, and causes the light to exit outward from a second end surface, and a diffusion structure disposed in an optical path of the light which exits from the second end surface of the light guide path.

主权项

1. A relay, comprising:
a case; a relay body disposed in the case; a light source disposed in the case that emits light in accordance with an operation of the relay body; a light guide path that receives, via a first end surface, the light emitted from the light source, and causes the light to exit outward from a second end surface; and a diffusion structure disposed in an optical path of the light which exits from the second end surface of the light guide path, wherein the relay meets the inequality
L>√{square root over ((n2−1)W2+α2n2d2)}, wherein L represents a length of the light guide path, W represents a maximum width of the first end surface, W/α represents a maximum distance between an edge of the first end surface and a point which a perpendicular from the light source to the first end surface reaches, d represents a distance between the light source and the first end surface, and n represents a refractive index of the light guide path.