Meter for automobiles

Details Meter for automobiles Meter for automobiles

1991-03-29

1992-09-01

Lazarus, Ira S.

Illumination

Illuminated scale or dial

Internal light source

362 23, 362 27, 362 28, 362 30, 116286, 116288, 116DIG6, G01D 1128

Patent

active

051434342

ABSTRACT:
The light emitting diode to illuminate the indicating portion of the pointer and the face plate through the light conductive member is fixedly mounted on a drive unit that rotates the pointer shaft according to the amount of a measured quantity. The light emitting diode is installed in center openings formed in the pointer, face plate and light conducting member, the light conducting member being attached to the underside of the face plate to illuminate letters on the face plate. The light emitting portion of the diode is formed cylindrical so as to allow the pointer shaft to be fixed to the pointer inside the hollow portion of the cylindrical light emitting portion, so that light radiated from the light emitting portion is reliably introduced into the indicator portion of the pointer and also to the light conducting member. Thus construction simplifies the power supply path leading from the drive unit to the light emitting diode.

REFERENCES:
patent: 4044708 (1977-08-01), Klein
patent: 4163428 (1979-08-01), Ishikawa
patent: 4233927 (1980-11-01), Oikawa et al.
patent: 4323951 (1982-04-01), Pasco
patent: 4559582 (1985-12-01), Scardilli et al.
patent: 4682177 (1987-07-01), Shimizu
patent: 4860170 (1989-08-01), Sakakibara et al.
patent: 5047761 (1991-09-01), Sell

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