Pointer illuminated instrument

Details Pointer illuminated instrument Pointer illuminated instrument

1989-12-08

1991-09-10

Yasich, Daniel M.

Communications: electrical

Visual indication

Movable

116288, 362 28, 362 30, G01D 1128, F21V 2100

Patent

active

050477617

ABSTRACT:
In a pointer instrument, a light guide (3) serves as support for electronic components (7). The light guide (3) therefore assumes the function of a printed circuit board. The electronic components (7) are preferably arranged on the outer wall surface (6) of the light guide (3) which is developed in the shape of a conical frustum so that space which is in any event present in the housing can be used for them. The light guide serves to illuminate a dial of the instrument.

REFERENCES:
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patent: 3641967 (1972-02-01), Charbonneaux
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 3754243 (1973-08-01), Kaneko et al.
patent: 3873979 (1975-03-01), Craford et al.
patent: 3918053 (1975-11-01), Towne et al.
patent: 4044708 (1977-08-01), Klein
patent: 4163428 (1979-08-01), Ishikawa
patent: 4252078 (1981-02-01), Fukasawa et al.
patent: 4257084 (1981-03-01), Reynolds
patent: 4700025 (1987-10-01), Hatayama et al.
patent: 4882659 (1989-11-01), Gloudemans
"Trends bei LEDs und Vergleich mit anderen Anzeigearten", Der Electroniker, (Klaus Gillessen), pp. 51-55, (Optoelektronik), 7/84.

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