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Illuminant pointer needle assembly for vehicular instrument

  • US 5,142,453 A
  • Filed: 10/23/1990
  • Issued: 08/25/1992
  • Est. Priority Date: 10/26/1989
  • Status: Expired due to Fees
First Claim
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1. An illuminant pointer needle assembly for a vehicular instrument, comprising:

  • a pointer needle having a base end portion fixedly mounted on a pointer needle shaft of a movement unit and provided with a transparent index portion;

    a layer of a selected color formed on a bottom surface of the transparent index portion selectively reflecting incident external white light and to illuminate the transparent index portion in the selected color; and

    a light-emitting element having a light-emitting diode and being fixedly mounted on the base end portion of said pointer needle, said light-emitting element formed so as to emit light of a first single wavelength range which is totally reflective to the bottom surface of the transparent index portion and thereby to light up the transparent index portion in a color according to the first single wavelength range and different from the selected color when the external white light is incident upon said pointer needle.

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