EP0706006A2 - Panneau de matière plastique contenant une matière luminescente blanche, excitable par une lumière ultraviolette de grande longueur d'onde - Google Patents

Panneau de matière plastique contenant une matière luminescente blanche, excitable par une lumière ultraviolette de grande longueur d'onde Download PDF

Info

Publication number
EP0706006A2
EP0706006A2 EP95115186A EP95115186A EP0706006A2 EP 0706006 A2 EP0706006 A2 EP 0706006A2 EP 95115186 A EP95115186 A EP 95115186A EP 95115186 A EP95115186 A EP 95115186A EP 0706006 A2 EP0706006 A2 EP 0706006A2
Authority
EP
European Patent Office
Prior art keywords
plastic plate
plastic
white fluorescent
signs
ultraviolet light
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Withdrawn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
EP95115186A
Other languages
German (de)
English (en)
Other versions
EP0706006A3 (fr
Inventor
Udo Dr. Ing. Fischer
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.)
Roehm GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
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 Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Publication of EP0706006A2 publication Critical patent/EP0706006A2/fr
Publication of EP0706006A3 publication Critical patent/EP0706006A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0472—Traffic signs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent

Definitions

  • the invention relates to the field of illuminated signs.
  • Billboards and traffic signs that are illuminated so that they can be seen over long distances in the twilight and at night or in fog are generally known.
  • these signs are housings or boxes made of metal or plastic, which have an illuminable surface and in the interior of which an illuminating device is attached.
  • the page to be illuminated contains picture or characters that can serve as advertising or traffic information. These instructions are usually very high-contrast (e.g. white arrow on a blue background on a traffic sign). As a rule, the signs have a relatively small overall depth for reasons of manageability and for reasons of space. In order to achieve uniform illumination that ensures good perception even over long distances, a disproportionate number of lamps must therefore often be installed.
  • a number of disadvantages are associated with the conventional illuminated signs. Energy expenditure, especially outside of built-up areas, is high. Energy consumption is also high.
  • the conventional illuminated signs have the disadvantage of a not insignificant glare for the human eye. This effect is particularly evident in the absence of other light sources such as Street lighting, especially at dusk and at night outside of towns.
  • the aforementioned glare effect means that darker objects are poorly recognized. After passing a dazzling sign, it takes some time for the eye to adapt to the darker surroundings again. First you drive into a "black hole”. This increases the overall risk of participating in traffic.
  • fluorescent fluorescent colors Another way to make traffic or advertising notices visible is fluorescent fluorescent colors.
  • Known applications are warning notices on clothing or emergency vehicles such as e.g. Firefighters etc.
  • the most well-known colors are mainly light red, green, yellow, orange.
  • the lighting effect arises from the excitation of the dye molecules by certain wavelengths of visible light, which in turn emit this energy in the form of light from a different, longer-wave spectrum.
  • the lighting effect is perceived as glaring by the human eye, which explains the application, which is largely limited to warnings.
  • phosphors which are excited by invisible spectra, such as UV radiation, and which emit visible light spectra.
  • the majority of the known phosphors require high-energy, short-wave UV radiation for the transition to the excited state.
  • the use of these phosphors in signs would, in particular, conflict with the health-endangering effect of the radiation source required, as well as their permanent plastic-destroying effect.
  • NP 657-09-01 Naichia Chemicals Europa GmbH
  • NP 657-09-01 a water-insoluble, white powder consisting of several components of the following composition, which fluoresce in the basic colors of the spectrum.
  • the elements used for doping are named after the colon.
  • Y2O2S Eu
  • (Ba, Mg) O.6Al2O3 Eu
  • Mn Mn
  • (Sr, Ca, Ba) 5 (PO4) 3Cl Eu
  • the proportions of the components are chosen so that their fluorescent radiation is added to white light.
  • the average grain size is approx. 6 ⁇ m, the specific weight is 4.58 g / cm3.
  • An application for illuminating signs is not known.
  • To excite this dye e.g. Commercial mercury black light lamps can be used as the light source, in which only the long-wave UV radiation is transmitted by means of a cobalt glass cover.
  • the object of the present invention was to create a simple lighting device for illuminable signs which enables the human eye to perceive in good contrast, but at the same time is characterized by a lower energy requirement and a significantly lower glare.
  • the light source used should be be harmless to humans (and animals) in any case, i.e. do not emit short-wave UV radiation.
  • the object could be achieved by a plate made of thermoplastic plastic (plastic plate), characterized in that it contains a white fluorescent phosphor which can be excited by long-wave UV radiation in the range from 300 to 380 ⁇ m.
  • FIG. 1 The invention is illustrated by FIG. 1, but should not be limited to the embodiment shown.
  • Figure 1 Example of the arrangement of a plastic plate (1) designed as a traffic sign and a UV lamp (2) designed as a headlight over a lane of a two-lane highway-like road (4) interrupted by a green strip (3).
  • the radiation orientation of the headlight towards the plastic plate is indicated by dashed lines.
  • the invention also has the advantages that a box structure for the sign is unnecessary, since the lighting can be accomplished from a distance, the lighting source emits a spectrum that is harmless to humans and is almost invisible to oncoming traffic and is therefore without glare.
  • An additional advantage is the ease of maintenance made possible by the separate structure of the shield (1) and light source (2), since no light box can be opened to change the lamp and the lamp itself can be placed easily accessible.
  • signs that are difficult to access e.g. are installed at great heights. With the invention practically any advertising or traffic signs can be carried out in which lighting is provided.
  • a white fluorescent phosphor that can be excited by long-wave UV radiation in the range of approximately 300-380 nm, preferably the phosphor described above, NP 657-09-01 (Nichia Chemicals Europe GmbH, D-90429, Nuremberg) is used in the manufacture of plates or Sheets of commercially available thermoplastically deformable plastics or plastic mixtures suitable for signs are incorporated.
  • Weather-resistant, UV-permeable plastics or artificial tar mixtures are preferably used, e.g. made of polymethyl methacrylate.
  • the plastics can in a manner known per se additional modifications e.g. to improve their impact resistance.
  • Impact modifiers for polymethyl methacrylate are e.g. known from EP 0 368 094 B1.
  • the finished plastic sheets can also be provided with scratch-resistant lacquer layers in a manner known per se.
  • the phosphor can be added directly to the monomer or to a partially polymerized syrup. In the case of extruded plastic, it can be added to the extruder with the polymer granulate or, if necessary, in the form of a plastic-containing concentrate.
  • the phosphor is preferably used in amounts of approximately 0.5-2% by weight, particularly preferably 0.8-1.2% by weight.
  • UV-reflecting pigments or other auxiliaries such as e.g. Barium sulfate can be incorporated to improve the light scattering properties. Barium sulfate can be used in amounts of approximately 0.1 to 2% by weight, preferably 0.5% by weight.
  • the plastic panels obtained are provided with the appropriate traffic or advertising information by applying foils, by printing or by covering them with colored plastic or other suitable processes.
  • the plastic panels themselves can be square, round, ellipsoidal, square with rounded corners or in any other desired shape.
  • Usual dimensions are in the area of the known, conventionally illuminated signs and, depending on the shape, can be about 50 cm wide and / or high up to several meters wide and high, e.g. with signs attached to highways.
  • the thickness of the plastic sheets can range from approx. 2 mm to approx. 50 mm.
  • Very large signs can also be composed of several parts, in order to limit the weight and dimensions in the interest of easier handling and portability.
  • the finished sign is irradiated at its location using a commercially available mercury black light lamp with a tube or outer bulb made of cobalt glass with a power of 10 to 100 W / m2 with wavelengths of approx. 300 - 380 nm.
  • a traffic sign on a bridge the lamp can be placed in a spotlight at a distance of approx. 10 m in an easily accessible place.
  • the plate is illuminated from the rear at a distance of 1 m using a commercially available mercury black light lamp with a tube made of cobalt glass (emitted wavelengths approx. 300 - 380 nm) and an output of 20 watts.
  • the plate now appears fluorescent white, which means that advertising information is backlit evenly. The effect is already noticeable in daylight and improves again after darkening the environment or the room in which the plate is placed. In comparison to conventional illuminated signs, the emitted light is perceived as pleasant for the eye and significantly less dazzling.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP95115186A 1994-10-04 1995-09-27 Panneau de matière plastique contenant une matière luminescente blanche, excitable par une lumière ultraviolette de grande longueur d'onde Withdrawn EP0706006A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9415950U 1994-10-04
DE9415950U DE9415950U1 (de) 1994-10-04 1994-10-04 Kunststoffplatte mit einem weiß fluoreszierenden, durch langwelliges UV-Licht anregbaren Leuchtstoff

Publications (2)

Publication Number Publication Date
EP0706006A2 true EP0706006A2 (fr) 1996-04-10
EP0706006A3 EP0706006A3 (fr) 1996-10-23

Family

ID=6914450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115186A Withdrawn EP0706006A3 (fr) 1994-10-04 1995-09-27 Panneau de matière plastique contenant une matière luminescente blanche, excitable par une lumière ultraviolette de grande longueur d'onde

Country Status (3)

Country Link
EP (1) EP0706006A3 (fr)
JP (1) JPH08211838A (fr)
DE (1) DE9415950U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926542A1 (fr) * 1997-12-24 1999-06-30 Toshiaki Nakagawa Appareil d'éclairage
DE10256383A1 (de) * 2002-12-02 2004-06-09 Der Kluth: Decke Und Licht Gmbh Transparente Fläche mit Fluoreszenzmitteln und Beleuchtungsvorrichtung mit einer derartigen Fläche
WO2004099664A1 (fr) * 2003-05-09 2004-11-18 Philips Intellectual Property & Standards Gmbh Source de lumiere uv revetue de nanoparticules de phosphore
GB2453953A (en) * 2007-10-23 2009-04-29 Univ Brunel Protection of plastics using UV-absorbing phosphors
DE102022003058A1 (de) 2022-08-22 2024-02-22 Salux GmbH Lichtdurchlässige Kunststoffplatte für Dach- und Wandelemente mit phosphoreszierenden und lichtstreuenden Eigenschaften

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812051A1 (de) * 1998-03-19 1999-09-30 Rainer Grosmann Präsentationseinrichtung für eine vorzugsweise bildliche Darstellung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0368094A1 (fr) 1988-11-05 1990-05-16 Röhm Gmbh Couche protectrice résistante aux chocs, à base de méthacrylate sur polycarbonate, contenant un absorbeur UV

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1499575A1 (de) * 1965-03-08 1970-04-02 American Cyanamid Co Verfahren zum Speichern und zum Wiederauffinden von Informationen
DE9202955U1 (fr) * 1992-03-06 1992-06-04 Roehm Gmbh, 6100 Darmstadt, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0368094A1 (fr) 1988-11-05 1990-05-16 Röhm Gmbh Couche protectrice résistante aux chocs, à base de méthacrylate sur polycarbonate, contenant un absorbeur UV

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926542A1 (fr) * 1997-12-24 1999-06-30 Toshiaki Nakagawa Appareil d'éclairage
US6120160A (en) * 1997-12-24 2000-09-19 Nakagawa; Toshiaki Illuminating apparatus
DE10256383A1 (de) * 2002-12-02 2004-06-09 Der Kluth: Decke Und Licht Gmbh Transparente Fläche mit Fluoreszenzmitteln und Beleuchtungsvorrichtung mit einer derartigen Fläche
WO2004099664A1 (fr) * 2003-05-09 2004-11-18 Philips Intellectual Property & Standards Gmbh Source de lumiere uv revetue de nanoparticules de phosphore
GB2453953A (en) * 2007-10-23 2009-04-29 Univ Brunel Protection of plastics using UV-absorbing phosphors
DE102022003058A1 (de) 2022-08-22 2024-02-22 Salux GmbH Lichtdurchlässige Kunststoffplatte für Dach- und Wandelemente mit phosphoreszierenden und lichtstreuenden Eigenschaften

Also Published As

Publication number Publication date
DE9415950U1 (de) 1994-11-17
EP0706006A3 (fr) 1996-10-23
JPH08211838A (ja) 1996-08-20

Similar Documents

Publication Publication Date Title
DE2355362C3 (de) Retroreflektierendes Material aus transparentem Kunststoff
DE2946191A1 (de) Farbige leuchte, z.b. fuer leuchtreklame, aussen- und innenbeleuchtung
DE2020808A1 (de) Optisches Bauelement
EP0027234A2 (fr) Elément de signal sans lampe
DE60021127T2 (de) Lichtstreuende Verbundwerkstoffe
EP2219056A1 (fr) Plaque dotée d'au moins un champ lumineux intégré
DE3022543A1 (de) Fluessigkristall-anzeige
EP3355664A1 (fr) Ampoule ayant un élément fluorescent et filtre de couleur et ampoule en étant équipé
DE2303578A1 (de) Retroreflektierendes flaechiges material
DE1566913C2 (de) Signaleinrichtung und Verfahren zum Betrieb derselben
EP0706006A2 (fr) Panneau de matière plastique contenant une matière luminescente blanche, excitable par une lumière ultraviolette de grande longueur d'onde
DE19529884A1 (de) Beleuchtbare Fläche eines Fahrzeuges
DE102014203245A1 (de) Beleuchtungseinrichtung eines Kraftfahrzeugs
DE4107581C2 (de) Lichtwerbeelement
DE3803246C2 (fr)
DE2045215A1 (de) Reklameleuchtkörper
DE102020104213A1 (de) Fahrzeug-Leuchtenanordnung mit quantendotiertem Material, das mit unterschiedlichen Beleuchtungsquellen beleuchtet werden kann
DE2347852A1 (de) Vorrichtung zum anzeigen von messwerten
DE1766816A1 (de) Leuchtsignal und Verfahren zum Herstellen desselben
EP1215640A2 (fr) Dispositif générateur de signaux lumineux
WO2006029595A1 (fr) Systeme de diodes luminescentes pour produire un faisceau de lumiere plat homogene
EP1010159B1 (fr) Enseigne lumineuse, notamment lettre lumineuse
CH688251A5 (de) Anzeige-Vorrichtung und -Feld.
DE3018099A1 (de) Vorrichtung zur mehrfarbigen optischen darstellung von informationen
AT205385B (de) Leuchtvorrichtung zum Erkennen von Signalen, Anzeigetafeln, Verkehrszeichen od. dgl.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19970424