| 摘要 |
<p>A back-lit indicator device (1) including a support plane (3) for a graphical indicator panel (4), a pointer (5) mounted movably through the support plane (3) in order to cooperate with the graphical panel and a cavity (6) underlying the support plane for the graphical panel and housing a light source (7), the pointer (5) including a light guide (12) which projects into the cavity (6) through a through hole in the support plane for the graphical panel, possibly bounded by a light guide for the graphical panel mounted below the support plane (3) for the graphical panel, in which the light guide (12) for the pointer is covered, at the location of the through hole and together therewith, by an opaque nut (18) shaped as a hood and borne rigidly by the pointer, in which an annular projecting member (22) is provided around the whole of the through hole and projects above the support plane of the graphical panel and towards the nut, and is made, like the latter, from an opaque material, at least one lateral surface portion (24) of the nut (18) and a lateral inner or outer surface of the annular member (22) being mounted coaxially and facing one another in order to create an optical labyrinth (29) adapted to prevent the projection of halos of light around the pointer (5) on the support plane (3) for the graphical panel (4). <IMAGE></p> |
