ILLUMINATING DEVICE OF LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To allow light attenuation without using an attenuation circuit. SOLUTION: A transmission-illuminated liquid crystal display element 1 is placed adjacently to an indication instrument composed from an indication pointer, a dial, etc. Behind the element 1, a lamp scale 3 and a b...

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Bibliographische Detailangaben
Hauptverfasser:	WATANABE MASAHARU, KIMURA TOMOMICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DISPLAYING EDUCATION FREQUENCY-CHANGING LABELS OR NAME-PLATES NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS SEALS SIGNS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To allow light attenuation without using an attenuation circuit. SOLUTION: A transmission-illuminated liquid crystal display element 1 is placed adjacently to an indication instrument composed from an indication pointer, a dial, etc. Behind the element 1, a lamp scale 3 and a bulb 2, a first light source, are provided. This first light source 2 transmissively illuminates the element 1. And a second light source 11 which illuminates the element 1 and the indication instrument is provided separately from the first light source 2 behind the dial 9. The first light source 2 and the second light source 11 are linked with the switches of the auxiliary lamps and the head light 2 of the car. When the head light is switched off as in the daytime, the first light source 2 is lighted to transmissively illuminate the element 1 alone, and when the above switches are on as in the nighttime, the first light source 2 is put off and the second light source 11 is lighted to illuminate the element 1 and the indication instrument.