Indicator needle of automotive instrument and method of manufact

Details Indicator needle of automotive instrument and method of manufact Indicator needle of automotive instrument and method of manufact

1991-12-02

1992-11-10

Ostrager, Allen M.

Illumination

Illuminated scale or dial

Internal light source

362800, G01D 1128

Patent

active

051618729

ABSTRACT:
An indicator needle is provided with a base having a groove having a U-shaped cross section, which groove has an opening in an upper surface thereof and extends in a longitudinal direction of the indicator, and a light transmitting lens which plugs the opening of the upper surface of the base. A plurality of light emitting diodes are arranged in the groove of the base. Base ribs each having a triangular cross section and formed integrally with the base so as to cross the groove of the base are provided in the groove of the base, as well. Light generated from the light emitting diodes directly illuminates the lens, or is reflected by the base ribs to illuminates the same.

REFERENCES:
patent: 2792803 (1927-05-01), Hardesty
patent: 2902970 (1959-09-01), Kadlec
patent: 4163428 (1979-08-01), Ishikawa
patent: 4959759 (1990-09-01), Kohler

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