| 摘要 |
A light guide part ( 20 ) is provided along a Z-axis on a side surface of a case ( 2 ) of a relay ( 1 ). The light guide part is a thick portion formed of a material forming the side surface of the case, and is structurally integral with the other parts of the case. Also, a light emitting device which emits light in response to application of a voltage to coil terminals ( 41 ) is provided within the relay ( 1 ) (case). A reflection surface ( 201 ) which reflects illuminating light emitted from the light emitting device in a (+Y) direction in a (+Z) direction is placed at a lower end of the light guide part. Illuminating light reflected by the reflection surface is guided to a display surface ( 200 ) placed at an upper end of the light guide part, to illuminate the display surface.
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