To provide a speed display device with which a sense of discomfort due to a luminance difference hardly occurs, from an initial stage till the elapse of a prescribed use time.SOLUTION: Provided is a speed display device for vehicles which displays a vehicle speed value in up to three digits due to the fact that selected segments 121-127 are made to emit light by a plurality of light-emitting elements 130. All of the plurality of light-emitting elements are made to be the same specification, and the load current of a light-emitting element in the numeral display part, out of three sets of numeral display part, that corresponds to the third digit is set to be higher than the load currents of light-emitting elements corresponding to the first and second digits, and the permeability of the segment of the numeral display part corresponding to the third digit is set to be low so as to be in an inverse proportion to the load current that is set to be high.SELECTED DRAWING: Figure 1
【課題】初期段階から所定の使用時間経過に至るまで、輝度差による違和感の生じにくい速度表示装置を提供する。【解決手段】複数の発光素子130によって、選択されたセグメント121〜127が発光されることで、最大3桁の車速値を表示する車両用速度表示装置において、複数の発光素子は、全て同一仕様となっており、3組の数字表示部のうち、3桁目に対応する数字表示部の発光素子の負荷電流が、1桁目と2桁目に対応する数字表示部の発光素子の負荷電流よりも高く設定されると共に、高く設定された負荷電流に反比例するように、3桁目に対応する数字表示部のセグメントの透過率が低く設定されている。【選択図】図1
SPEED DISPLAY DEVICE FOR VEHICLES
車両用速度表示装置
2020-09-10
Patent
Elektronische Ressource
Japanisch
IPC: | G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / H05B ELECTRIC HEATING , Elektrische Heizung |
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