DE828766C - Dial lighting for readable display devices, especially for fare displays on taximeters - Google Patents

Dial lighting for readable display devices, especially for fare displays on taximeters

Info

Publication number
DE828766C
DE828766C DEN1015A DEN0001015A DE828766C DE 828766 C DE828766 C DE 828766C DE N1015 A DEN1015 A DE N1015A DE N0001015 A DEN0001015 A DE N0001015A DE 828766 C DE828766 C DE 828766C
Authority
DE
Germany
Prior art keywords
dial
disc
edge
area
taximeters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEN1015A
Other languages
German (de)
Inventor
Umberto Nistri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE828766C publication Critical patent/DE828766C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046Tapered light guide, e.g. wedge-shaped light guide
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28Structurally-combined illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086Positioning aspects
    • G02B6/009Positioning aspects of the light source in the package
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07BTICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B13/00Taximeters
    • G07B13/02Details; Accessories
    • GPHYSICS
    • G12INSTRUMENT DETAILS
    • G12BCONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B11/00Indicating elements; Illumination thereof
    • G12B11/02Scales; Dials
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/007Incandescent lamp or gas discharge lamp

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)

Description

Um die bekannten Fahrpreisanzeiger bei Taxametern während der Nachtstunden gut ablesen zu können, ist eine Beleuchtung der Ziffern, die den Fahrpreis angeben, notwendig. Die Beleuchtungsvorrichtung muß sich dabei ,vor dem Zifferblatt befinden, um die in der Regel etwas hinter dem Zifferblatt liegenden Ziffern zu beleuchten, zu welchem Zweck ein verhältnismäßig tiefes Gehäuse der Taxameteruhr erforderlich ist. Um den Raumbedarf der Taxameteruhr nicht zu erhöhen, wird die den Gegenstand der Erfindung bildende Zifferblattbeleuchtung vorgeschlagen, die durch eine hinter dem Schutzglas angeordnete Scheibe aus durchsichtigem Kunststoff gekennzeichnet ist, die im Bereich der zu beleuchtenden Ziffern mit Ausschnitten versehen ist, .deren schräge Randkanten die von einer am Rande der Kunststoffscheibe gelegenen Glühlampe ausgehenden Lichtstrahlen nach innen auf die Ziffern reflektieren. Die Beleuchtungsvorrichtung liegt also in einer Ebene mit der Kunststoffscheibe bzw. dem Zifferblatt, so daß das Taxameteruhrgehäuse nicht über das Zifferblatt vorzustehen braucht.To the well-known fare displays on taximeters during the night The digits that indicate the fare are illuminated so that they can be easily read, necessary. The lighting device must be in front of the dial, to illuminate the digits, which are usually a little behind the dial, for what purpose a relatively deep case of the taximeter clock is required is. In order not to increase the space required by the taximeter clock, it becomes the object the invention forming dial lighting proposed by a rear The transparent plastic pane arranged on the protective glass is marked which is provided with cutouts in the area of the digits to be illuminated, .whose sloping edges that of one located on the edge of the plastic disc Light rays emanating from the light bulb reflect inwards onto the digits. the The lighting device is therefore in one plane with the plastic disc or the dial, so that the taximeter watch case does not protrude over the dial needs.

Hinsichtlich weiterer .Merkmale der Erfindung wird auf die Ansprüche verwiesen.With regard to further features of the invention, reference is made to the claims referenced.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt.The drawing shows an embodiment of the subject matter of the invention shown.

.Fig. i zeigt eine Taxameteruhr von vorn gesehen, wobei das Gehäuse nur durch gestrichelte Linien dargestellt ist; Fig. 2 zeigt einen senkrechten Schnitt durch das Zifferblatt und die Beleuchtungsvorrichtung..Fig. i shows a taximeter watch viewed from the front, with the case shown only by dashed lines; Fig. 2 shows a vertical section through the dial and the lighting device.

Im gezeichneten Beispiel ist zwischen dem Zifferblatt 1 und dem äußeren Schutzglas q eine durchsichtige Kunststoffscheibe 2 angeordnet, die im Bereich der zu beleuchtenden Ziffern mit Ausschnitten 6 versehen ist. Die Beleuchtungsivorrichtung besteht aus einem Metallrohr .¢, .in dem kleine Soffittenlampen 3 angeordnet und gelagert sind. Diese Beleuchtungsvorrichtung ist im gezeichneten Beispiel der unteren Randkante der Kunststoffscheibe zugeordnet. Das Rohr 4 ist im Bereich der Lampen 3 mit Fensteröffnungen io versehen, durch welche ,die Lichtstrahlen @in die Kunststoffscheibe eintreten. Das Metallrohr 4 erstreckt sich beiderseitig durch das Uhrgehäuse ii nach außen und ist hier durch Schraubkappen 5 abgeschlossen. Die Beleuchtungsvorrichtung bildet also einen von außen für sich zugänglichen Teil, der keinen Zugang zu den übrigen Uhrteilen zuläßt.In the example shown is between the dial 1 and the outer one Protective glass q a transparent plastic disc 2 is arranged in the area of the digits to be illuminated are provided with cutouts 6. The lighting device consists of a metal tube. ¢,. in which small festoon lamps 3 are arranged and are stored. This lighting device is the lower one in the example shown Associated edge of the plastic disc. The tube 4 is in the area of the lamps 3 provided with window openings io through which the light rays @ into the plastic pane enter. The metal tube 4 extends on both sides through the watch case ii to the outside and is closed here by screw caps 5. The lighting device thus forms a part that is accessible from the outside and that does not have access to the other parts of the clock.

Im gezeichneten .Beispiel ist der untere Rand 7 des Ausschnittes 6 der Scheibe 2 derart abgeschrägt, daß diese Ausschnittkante einen Reflektor für die Lichtstrahlen bildet. Aus Fig. 2 ist ersichtlich, daß der durch eine strichpunktierte Linie 12 angegebene Lichtstrahl aus dem Innern der Scheibe 2 nach außen, und zwar gegen das Innere der Uhr, reflektiert wird. Die Anordnung ist so getroffen, daß die abzulesenden Ziffern durch die reflektierten Lichtstrahlen beleuchtet «erden.In the example shown, the lower edge 7 of the cutout 6 is the disc 2 beveled so that this cutout edge is a reflector for which forms rays of light. From Fig. 2 it can be seen that the by a dash-dotted line Line 12 indicated light beam from the inside of the disc 2 to the outside, namely against the inside of the clock. The arrangement is made so that the digits to be read are illuminated by the reflected light rays.

Um eine Reflektion an der hinteren Scheibenfläche zu vermeiden, ist die Scheibe 2 an der mit 8 bezeichneten Stelle, die sich neben der schrägen Randkante 7 befindet, matt ausgebildet. Die schräge Randkante 7 ist vorzugsweise unter einem `'Winkel von etwa 6o° geneigt.In order to avoid a reflection on the rear surface of the pane the disc 2 at the point indicated by 8, which is next to the inclined edge 7 is located, formed matt. The inclined edge 7 is preferably under one `` 'Inclined at an angle of about 60 °.

Das besondere Zifferblatt i kann in Wegfall kommen, wenn die Scheibe 2 selbst als Zifferblatt ausgebildet .ist, d. h. wenn die erforderlichen Bezeichnungen, Inschriften u. dgl. auf der Kunststoffscheibe angebracht oder in letztere eingeprägt sind. Wo die Scheibe undurchsichtig sein soll, .ist sie mit einem Farb- oder Lackauftrag versehen.The special dial i can be omitted if the disc 2 itself is designed as a dial, i.e. H. if the required designations, Inscriptions and the like attached to the plastic disc or stamped into the latter are. Where the pane should be opaque, it is with a paint or varnish application Mistake.

Die Beleuchtungsvorrichtung soll nicht auf Taxameteruhren beschränkt sein, denn die Zifferblattbeleuchtung ist mit gleichem Vorteil auch bei anderen abzulesenden .\nzeigegeräten anwendbar.The lighting device is not intended to be limited to taximeter clocks because the dial lighting is equally advantageous for others to be read. \ nPointing devices applicable.

Claims (5)

PATENTANSPROCHE: i. Zifferblattbeleuchtung bei abzulesenden Anzeigegeräten, insbesondere bei Fahrpreisanzeigern von Taxametern, gekennzeichnet durch eine hinter dem Schutzglas (9) angeordnete durchsichtige Kunststoffscheibe (2), die im Bereich der zu beleuchtenden Ziffern mit Ausschnitten (6) versehen ist, deren schräge Randkanten (7) die von einer am Rand der Kunststoffscheibe gelegenen Glühlampe (3) ausgehenden Lichtstrahlen nach innen auf die Ziffern reflektieren. PATENT CLAIM: i. Dial lighting on display devices to be read, especially in the case of fare displays of taximeters, marked by a behind the protective glass (9) arranged transparent plastic disc (2), which in the area the digits to be illuminated are provided with cutouts (6), their sloping edges (7) from a light bulb (3) located on the edge of the plastic disc Reflect light rays inwards onto the digits. 2. Zifferblattbeleuchtung nach Anspruch i, dadurch gekennzeichnet, daß die Oberfläche (8) ,der Scheibe (2) im Bereiche der schrägen Randkante (7), d. h. der austretenden, reflektierten Lichtstrahlen, matt ist. 2. Dial illumination according to claim i, characterized in that the surface (8) of the disc (2) in the area of the inclined edge (7), d. H. the emerging, reflected light rays, is matte. 3. Zifferblattbeleuchtung nach Anspruch i, gekennzeichnet durch ein am Rand der Scheibe (2) angeordnetes, kleine Soffittenlampen (3) aufnehmendes Metallrohr (4), das im Bereich der Lampen mit Fensteröffnungen (io) versehen ist, die das Licht in die Kunststoffscheibe eintreten lassen. 3. dial lighting according to claim i, characterized by an am Edge of the disc (2) arranged, small tubular lamps (3) receiving metal tube (4), which is provided with window openings (io) in the area of the lamps, which allow the light let it enter the plastic disc. 4. Zifferblattbeleuchtung nach Anspruch 3, dadurch gekennzeichnet, daß sich das Metallrohr (4) mit seinen durch Schraubkappen (5) verschlossenen Enden durch das ganze Taxametergehäuse (i i) bis nach außen erstreckt. 4. dial lighting according to claim 3, characterized in that the metal tube (4) with its screw caps (5) closed ends extending through the entire taximeter housing (i i) to the outside. 5. Zifferblattbeleuchtung nach vorigen Ansprüchen, dadurch gekennzeichnet, daß die Kunststoffscheibe gleichzeitig das Zifferblatt bildet und mit den erforderlichen Bezeichnungen, Inschriften u. dgl. versehen ist, wobei es dort, wo es undurchsichtig sein soll, einen Farb-oder Lackauftrag besitzt.5. dial lighting according to previous claims, characterized in that the Plastic disk at the same time forms the dial and with the necessary Designations, inscriptions, etc. is provided, where it is opaque should be, has a paint or varnish application.
DEN1015A 1949-06-09 1950-06-10 Dial lighting for readable display devices, especially for fare displays on taximeters Expired DE828766C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT828766X 1949-06-09

Publications (1)

Publication Number Publication Date
DE828766C true DE828766C (en) 1952-01-21

Family

ID=11319645

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN1015A Expired DE828766C (en) 1949-06-09 1950-06-10 Dial lighting for readable display devices, especially for fare displays on taximeters

Country Status (1)

Country Link
DE (1) DE828766C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133903B (en) * 1955-08-16 1962-07-26 John Edwin Thomas Welland Display device
DE1184974B (en) * 1960-07-08 1965-01-07 T A M Sa Pour Tous App S Mecan Device for illuminating the numeric scrolls of a display mechanism, which are arranged directly behind a protective wall of the housing and can be observed through viewing openings
DE19501129A1 (en) * 1995-01-03 1996-07-11 Willing Gmbh Dr Ing Disc light

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133903B (en) * 1955-08-16 1962-07-26 John Edwin Thomas Welland Display device
DE1184974B (en) * 1960-07-08 1965-01-07 T A M Sa Pour Tous App S Mecan Device for illuminating the numeric scrolls of a display mechanism, which are arranged directly behind a protective wall of the housing and can be observed through viewing openings
DE19501129A1 (en) * 1995-01-03 1996-07-11 Willing Gmbh Dr Ing Disc light
DE19501129C2 (en) * 1995-01-03 2002-07-18 Willing Gmbh Dr Ing edge luminaire

Similar Documents

Publication Publication Date Title
DE3612296C2 (en)
DE828766C (en) Dial lighting for readable display devices, especially for fare displays on taximeters
CH667345A5 (en) LIGHT ADVERTISING AND INFORMATION DEVICE.
DE3541953A1 (en) Display unit for electrical equipment
DE2754618A1 (en) Scale illumination with light reflecting edge panels - has reflecting notches as scale symbols which are made visible by light reflected
EP0931976B1 (en) Uniform illumination device for flat informations display
DE3511838C2 (en) Watch with flashlight
DE719930C (en) Tail light of limited size combined with reflector
DE373245C (en) Advertising pillar with interior lighting
DE524171C (en) Illuminated sign
DE740794C (en) Device for generating illuminated signs
DE3142072A1 (en) Picture frame having a frame surround for a transparent picture
DE835656C (en) Display device with an illuminated dial, especially for motor vehicles
DE472027C (en) Advertising device
DE689334C (en) Advertising device for the demonstration of flowing light in banners
DE2024100A1 (en) Floodlight scale with a flat, cuboid light guide and with a recess to accommodate a lamp at one end
DE601876C (en) display case
DE452312C (en) Method for the three-dimensional representation of characters or the like by means of light
DE480641C (en) Device for daylight mirror advertising
DE873523C (en) Clock, especially for dashboards in vehicles and. like
DE612998C (en) Optical lighting device for radio receivers u. like. with scale light pointer
DE9417649U1 (en) Device for displaying house numbers
DE849648C (en) Device for creating flowing light effects
DE714259C (en) Darkening device for vehicle headlights
DE664489C (en) Glare protection for the viewing tube of illuminated and backlit liquid level indicators