Signals and indicators – Indicators – Rotary indicator with actuating means
Patent
1994-11-16
1997-06-10
Cuchlinski, Jr., William A.
Signals and indicators
Indicators
Rotary indicator with actuating means
116328, 116332, G01D 1322
Patent
active
056365896
ABSTRACT:
A self-luminescent indicator which may be employed in a tachometer, a speedometer, or other such gauges in automotive vehicles. The self-luminescent indicator comprises an indicating pointer, a luminescent element, and a semitransparent member. The indicating pointer includes a housing and a cover. The housing has formed therein a groove. The luminescent element is disposed in the groove of the housing. The semitransparent member is arranged within the cover of the indicating pointer for diffusing light emitted from the luminescent element out of the indicating pointer. The semitransparent member has side walls extending substantially parallel to each other in a vertical direction parallel to a given optical path of the luminescent element. With this arrangement, the indicating pointer projects light having uniform and high brightness to an observer without having the light experience total reflection in the semitransparent member so as to improve the visibility of pointer deflection over a dial plate.
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Kato Miki
Miyazaki Kazuhiko
Cuchlinski Jr. William A.
Nippondenso Co. Ltd.
Worth Willie Morris
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