Illumination of gauge indicator scale

Details Illumination of gauge indicator scale Illumination of gauge indicator scale

2006-05-23

2006-05-23

Cariaso, Alan (Department: 2875)

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

C362S030000, C362S084000, C362S489000, C116SDIG043, C116SDIG036

Reexamination Certificate

active

07048397

ABSTRACT:
An instrument gauge display for a vehicle dash includes a transparent dial having an upper surface partially covered by black paint and a lower surface covered with white paint. Uncovered areas on the upper surface define a plurality of graphical images that indicate a vehicle operating condition. A light guide, supported within a light housing, is positioned underneath the dial. The light housing and at least one light source is mounted to a printed circuit board, which is supported underneath the light guide by a vehicle structure. The light guide includes a plurality of scattering elements that are positioned generally underneath each of the graphical areas on the dial. The light source cooperates with the light guide and scattering elements to improve the light efficiency.

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Translation of DE 195 41 875 A.
Int'l Search Report dated Sep. 20, 2004.

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