DE2843297A1 - Plastics illuminated, totally reflecting writing panel used in schools - comprises frame, light source, and sheet having refractive index causing internal reflection - Google Patents

Plastics illuminated, totally reflecting writing panel used in schools - comprises frame, light source, and sheet having refractive index causing internal reflection

Info

Publication number
DE2843297A1
DE2843297A1 DE19782843297 DE2843297A DE2843297A1 DE 2843297 A1 DE2843297 A1 DE 2843297A1 DE 19782843297 DE19782843297 DE 19782843297 DE 2843297 A DE2843297 A DE 2843297A DE 2843297 A1 DE2843297 A1 DE 2843297A1
Authority
DE
Germany
Prior art keywords
light source
glass
refractive index
light
pane
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.)
Withdrawn
Application number
DE19782843297
Other languages
German (de)
Inventor
Robert Boulet
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
Priority to DE19782843297 priority Critical patent/DE2843297A1/en
Publication of DE2843297A1 publication Critical patent/DE2843297A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B13/00—Details of tables or desks
    • A47B13/08—Table tops; Rims therefor
    • A47B13/12—Transparent tops, e.g. with lighting means under the table top
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/004—Repeatedly-usable boards or tablets for writing or drawing with illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0066—Light 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
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0081—Mechanical 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
    • G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1831—Achieving homogeneous illumination using more than one light source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1872—Casing
    • G09F2013/1877—Stand-like

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Toys (AREA)

Abstract

Electrically operated, plastics transparent panel used for teaching purposes in children's primary or 'prep' schools comprises a frame, a transparent glass pane, and an electric light source. The light emitted by the light source passes through the edges of the pane and is totally reflected by the surfaces of the pane so that indicia written on them, e.g. with water-soluble crayons, becomes brightly visible. The light source is inside a space at the side of the pane. The pane has a refractive index such as to enable total reflection of the light shinning into it. Its surface hardness should be >=24 times that of acrylic glass.

Description

Durchsichtige Kinderschul- und Spielleuchttafel qus Kunststoff.Transparent children's school and play light board made of plastic.

( Elektrisch betrieben ).( Electrically operated ).

Die Erfindung betrifft eine Vorrichtung, die die bisherige Kinderschultafel in ihren didactischen und praktischen Einsatzmoglichkeiten um ein Vielfaches übertrifft.The invention relates to a device that uses the previous children's school board in their didactic and practical application possibilities surpasses many times over.

Diese Vorrichtung verwendet das bekannte Prinzip der totalen Refexion des Lichtes. Das Licht wird durch die Kanten der Tafel eingestrahlt und an deren Hauptflächen total reflektiert, sodass durch die Anbringung von luftverdrängende, jedoch lichtabsorbierende und weiterleitende Materialen - zum Beispiel wasserlöslische Fettfarbstifte - der Refraktionsindex des Glases sich ändert und somit diese Zeichen zum Leuchten bringt, indem das Licht austreten kann.This device uses the well-known principle of total reflection of light. The light is emitted through the edges of the board and on theirs Main surfaces totally reflected, so that by applying air-displacing, but light-absorbing and transmitting materials - for example water-soluble Bold pencils - the refractive index of the glass changes and with it these characters lights up by allowing the light to escape.

Es ist bekannt, dass bisher Kinderschultafeln aus Schiefer, Kunststoff bestehen;nichtleuchtend und undurchsichtig sind.It is known that so far children's school boards made of slate, plastic exist; are non-luminous and opaque.

Die Aufgabe der Erfindung besteht in der Schaffung von Möglichkeiten, didactisch-emotionelle Wirkung durch leuchtende Schriften und Zeichen zu erreichen; Aufhebung mechanischer Störungen bei Kindern zu erzielen, dadurch dass die Arbeitsfläche durchsichtig ist und alle darunter liegenden Schriften, Zeichen und Formen gut sichtbar und leicht zu kopieren sind! Desweiteren werden erhebliche Einsparungen von Mal-und Zeichenheften gemacht, da man diese unendlich benützen kann, ohne sie selbst zu zerstören. Hinzu kommen unbegrenzte Spielmöglichkeiten, dadurch, dass man auf der Rückseite der Tafel Schablonen, Quadrate u.s.w. anbringen kann. Diese Kinderschultafel kann ausserdem im Freien, im Auto, in der Bahn auch bei völliger Dunkelheit benutzt werden.The object of the invention is to create ways to achieve a didactic-emotional effect through luminous fonts and symbols; Removal of mechanical disturbances in children can be achieved by opening the work surface is transparent and all underlying fonts, characters and shapes are clearly visible and are easy to copy! Furthermore, there are significant savings in time and money Made drawing books because you can use them indefinitely without having to use them yourself destroy. In addition, there are unlimited play options, because you can play on the Back of the board stencils, squares, etc. can attach. This children's school board can also be used outdoors, in the car, on the train, even in complete darkness will.

Oben aufgeflihrte Aufgaben werden erfindungsgemäss dadurch gelost dass die Vorrichtung aus einem Rahmen besteht,in dem eine Licht-Quelle und ein spezielles Kunststoffglas mit besonderen Spiegeln untergebracht ist.The tasks listed above are thereby solved according to the invention that the device consists of a frame in which a light source and a special Plastic glass with special mirrors is housed.

Die Lichtquelle wird mit Gleichstrom gespeichert, mit Batterien, mit Akku oder Setzgerät. Es können 6,9,12 bis 24 Volt sein. Die Vorrichtung kann einzelne oder mehrere Möglichkeiten aufweisen, z.B; für Batterie ohne oder mit Mikro-Steckdose für Netzgerät.The light source is stored with direct current, with batteries, with Battery or setting tool. It can be 6, 9, 12 to 24 volts. The device can be single or have several possibilities, e.g. for battery with or without a micro socket for power supply.

Die Anordnung der Lichtquelle kann eine oder mehrere Lampen vorsehen.The arrangement of the light source can provide one or more lamps.

Die besonderen Spiegel werden an jedes Ende, links und rechts sowie in der Mitte zwischen jeder einzelnen Glühbirnen angebracht.The special mirrors are on each end, left and right as well placed in the middle between each individual lightbulb.

Jeder Spiegel ist von seiner Basis bis zur Spitze parabolisch.Each mirror is parabolic from base to tip.

Er wird senkrecht an seiner Basis zur Lampe angebracht, wobei die Krflmmungsmittelpunktslinie in einem Winkel von 45 Grad verläuft. Siehe Zeichnung.It is attached perpendicular to its base to the lamp, with the Center of curvature line extends at an angle of 45 degrees. See diagram.

Ein AusfUhrungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen Fig. 1 Einen Rahmen mit Sockel Fig.2 Die elektrische Anordnung Fig. 3 Die Spiegeln und schematische Funktion.An exemplary embodiment of the invention is shown in the drawing and is described in more detail below. 1 shows a frame with a base Fig.2 The electrical arrangement Fig. 3 The mirrors and schematic function.

Claims (5)

PatentansDrUche: urchsichtige Kinderschul-und Spielleuchttafel aus Kunststoff elektrisch betrieben) mit totaler Innenreflexion des in ihre Kanten eingestrahlten Lichtes, dadurch gekennzeichnet,dass die Tafel aus einem Kunststo1frahmen,einem durchsichtigen Glases und einer elektrischer Lichtquelle zusammengesetz-t ist.PATENT APPLICATIONS: transparent children's school and play light board Plastic electrically operated) with total internal reflection of the radiated into their edges Light, characterized in that the panel is made of a plastic frame, a transparent glass and an electric light source. 2. Kunstoffrahme nach Anspruch 1, dadurch gekennzeichne,dass dieser an einem seiner Seite mit einen Hohlraum welche die Unterbringung einer Lichtquelle ermöglicht versehen ist.2. plastic frame according to claim 1, characterized in that this on one of its side with a cavity which accommodates a light source is provided. 3o Durchsichtigen Glas nach Anspruch 1, dadurch gekennzeichnet,dass das Glas einen Lichtbrechungsindex welcher die totale Innenreflexion des in seine Kanten eingestrahlten Lichtes ermöglicht haben muss.3o transparent glass according to claim 1, characterized in that the glass has a refractive index which is the total internal reflection of the in its Edges of irradiated light must have enabled. 4.Durchsichtigen Glas nach Anspruch 1 oder 3, dadurch gekennzeichnet,dass die Oberflächehärte des Glases mindestens 24 Mal härter als die eines Acryl-Glases sein muss.4. Transparent glass according to claim 1 or 3, characterized in that the surface hardness of the glass is at least 24 times harder than that of an acrylic glass have to be. 5. Elektrische Lichtquelle nach Anspruch 1 dadurch gekennzeichnet,dass diese an einer Kanten des Glases in einen geschlossenen Hohlraum welchen die Lichteinstrahlung nur in die Kante des Glases ermöglicht untergebracht ist.5. Electrical light source according to claim 1, characterized in that this at one edge of the glass in a closed cavity which the light radiation is housed only in the edge of the glass allows.
DE19782843297 1978-10-04 1978-10-04 Plastics illuminated, totally reflecting writing panel used in schools - comprises frame, light source, and sheet having refractive index causing internal reflection Withdrawn DE2843297A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782843297 DE2843297A1 (en) 1978-10-04 1978-10-04 Plastics illuminated, totally reflecting writing panel used in schools - comprises frame, light source, and sheet having refractive index causing internal reflection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782843297 DE2843297A1 (en) 1978-10-04 1978-10-04 Plastics illuminated, totally reflecting writing panel used in schools - comprises frame, light source, and sheet having refractive index causing internal reflection

Publications (1)

Publication Number Publication Date
DE2843297A1 true DE2843297A1 (en) 1980-04-17

Family

ID=6051379

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782843297 Withdrawn DE2843297A1 (en) 1978-10-04 1978-10-04 Plastics illuminated, totally reflecting writing panel used in schools - comprises frame, light source, and sheet having refractive index causing internal reflection

Country Status (1)

Country Link
DE (1) DE2843297A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0417359A1 (en) * 1989-09-13 1991-03-20 Tradebest International Corporation Autonomous visual-attraction enhancement utilizing edge-illuminated panel
GB2318096A (en) * 1996-04-30 1998-04-15 Invicta Toys & Games Ltd Colouring sheet or book for children

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0417359A1 (en) * 1989-09-13 1991-03-20 Tradebest International Corporation Autonomous visual-attraction enhancement utilizing edge-illuminated panel
GB2318096A (en) * 1996-04-30 1998-04-15 Invicta Toys & Games Ltd Colouring sheet or book for children

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