EP2648178B1 - Ensemble d'émission de lumière avec élément d'éclairage plat - Google Patents

Ensemble d'émission de lumière avec élément d'éclairage plat Download PDF

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Publication number
EP2648178B1
EP2648178B1 EP13161950.4A EP13161950A EP2648178B1 EP 2648178 B1 EP2648178 B1 EP 2648178B1 EP 13161950 A EP13161950 A EP 13161950A EP 2648178 B1 EP2648178 B1 EP 2648178B1
Authority
EP
European Patent Office
Prior art keywords
light
recess
guiding element
light sources
arrangement
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.)
Active
Application number
EP13161950.4A
Other languages
German (de)
English (en)
Other versions
EP2648178A2 (fr
EP2648178A3 (fr
Inventor
Helmut Feuerle
Kilga Patrick
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2648178A2 publication Critical patent/EP2648178A2/fr
Publication of EP2648178A3 publication Critical patent/EP2648178A3/fr
Application granted granted Critical
Publication of EP2648178B1 publication Critical patent/EP2648178B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
    • G08B7/062—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources indicating emergency exits
    • 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
    • G09F13/0436—Signs, boards or panels attached to ceilings
    • 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
    • G09F2013/05—Constructional details indicating exit way or orientation
    • 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
    • G09F2013/1836—Achieving homogeneous illumination using a frame-like 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
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

Definitions

  • the present invention relates to a light-guiding element for use in a light-emitting device according to the preamble of claim 1, in which light is coupled in at the front end and emitted via a flat side separated from the end face.
  • the present invention relates to a escape sign light for indicating escape routes or the like.
  • light-guiding elements for surface light emission has long been known in lighting technology.
  • the basic principle of such elements is based on the fact that light from one or more light sources is irradiated via a narrow side into the element consisting of a transparent material. Reflections propagate the light within the light guide element and distribute it essentially over the entire element. By means of special so-called light extraction structures, a portion of the light is then emitted in each case via a flat side oriented essentially perpendicular to the light coupling surface.
  • the advantage of using such light-guiding elements is that the light provided by the light sources can be emitted uniformly over a relatively large area, and nevertheless a compact arrangement is achieved. In contrast, lighting arrangements in which a surface light output is to be achieved by means of reflectors or the like, a significantly higher design.
  • escape route luminaires are lights that serve to make a pictogram or the like appear bright to indicate to people within a building an escape route that allows easy and quick exit from the building.
  • the pictograms had to be backlit by a flat arrangement of light sources, a much more compact arrangement can now be achieved when using the above-described light control technique, since the light source or light sources need only be located on a specific side of the luminaire.
  • the pictogram is uniformly backlit across its entire surface and, accordingly, is clearly visible.
  • the pictogram can already be applied directly to the flat side of the light-guiding element used as the light-emitting surface, for example printed, so that a luminaire consisting of very few elements can be realized.
  • LEDs have the advantage that they work more energy efficient compared to conventional light sources and generally also have a higher reliability.
  • LEDs must also be more elaborately protected from external influences and care must be taken in particular that the LEDs or the board, which serves as a carrier for the LEDs, is not inadvertently touched by a consumer or user This may lead to so-called ESD damage due to possible electrostatic discharges.
  • ESD damage due to possible electrostatic discharges.
  • the penetration of moisture or the like is very problematic in this case.
  • no satisfactory protection of the LEDs or the LED board from the outside Ensures influences and it must be taken extra costly measures to ensure the necessary protection. This is especially the case when an application of the lighting arrangement is planned in areas in which a higher humidity is present.
  • the present invention is now based on the object to provide a solution in which a reliable protection of the light sources from external influences is ensured when using a planar light guide.
  • the arrangement should be suitable to be used in areas with higher humidity, in spite of all no damage to the components of the lighting arrangement is to be feared.
  • the light sources which are present in particular in the form of punctiform light sources, preferably LEDs, are recessed together with a corresponding carrier element for the light sources or sunk in the light guiding element.
  • this has at its the Lichteinkoppel Scheme forming narrow side a recess, which allows the recording of the light sources together with its support member and circumferentially bounded by the light guide.
  • a light-guiding element for use in an arrangement for emitting light with a plurality of substantially point-shaped light sources, in particular LEDs, wherein the light sources are arranged on at least one narrow light side forming a light coupling region of the light guide element and the light guide element is designed to emit the light emitted by the light sources and to emit light irradiated via the light coupling region via a flat side arranged substantially perpendicular to the narrow side.
  • the light-guiding element has a recess on the narrow side forming the coupling-in area, which is designed to receive the light sources together with a carrier element for the light sources and is circumscribed by the light-guiding element.
  • the light-guiding element has ribs or projections within the recess, which form contact areas for the carrier element for the light sources. If, for example, according to a preferred embodiment, an elongate LED board is used, it rests on these ribs or projections, with the result that the LEDs are arranged in a defined position with respect to the actual light coupling surface of the light-guiding element.
  • these support areas also prevent twisting or tilting of the support element.
  • the holder or fixing of the carrier element within the recess of the light-guiding element is preferably carried out with the aid of one or more clamping elements.
  • clamping elements can be latched, for example, in a preferred embodiment, within the recesses of the light guide and then press from the side facing away from the LEDs against the board and lock them reliably within the recess.
  • the clamping elements may additionally comprise means for attaching suspension elements for the arrangement, said means preferably by a Strain relief of the respective suspension element is achieved. This also opens the possibility in particular to use the supply lines for the power supply of the LEDs themselves for suspending the arrangement, which additionally contributes to a very simple embodiment of the arrangement according to the invention.
  • a particularly reliable protection of the light sources from external influences is achieved according to the present invention in particular when the recess for receiving the light sources together with its carrier element is filled with a casting or filling compound. After arranging the board and fixing with the aid of the clamping elements in the recess of the light guide so the remaining cavity of the light guide can be filled so that a complete seal against external influences is achieved. In this case, although a later replacement of the LED board is then no longer or only very difficult to implement, but due to the longevity of the LED light sources, this should not be a major problem.
  • the light-guiding element has a planar design, although this is not only to be understood as meaning that it has two flat sides aligned parallel to one another.
  • the intended for the light output flat sides could for example also be wedge-shaped or the like. Even a slightly curved or curved surface would be conceivable.
  • the arrangement according to the invention is part of a escape sign luminaire, wherein in particular the light-guiding element simultaneously serves as a support for a pictogram to be illuminated.
  • a escape sign is described below.
  • the inventive concept is by no means limited to such types of luminaires but can basically be used when a light output is to take place with the aid of light-guiding elements.
  • the light sources can also be arranged on a plurality of narrow sides of the light-guiding element in accordance with the solution according to the invention and a light output can take place via one or both flat sides of the light-guiding element.
  • escape sign light is provided for wire suspension and is accordingly attached via two wires 50 to a support, not shown, for example, the ceiling of a room or the like.
  • a plurality of light sources in the form of LEDs are arranged, which are arranged side by side on an elongated board.
  • the light of the LEDs is radiated from the top into a wedge-like design in cross-section 10.
  • the light is forwarded according to the arrow shown within the light guide 10.
  • the light guide 10 On its surface or the two opposite flat sides 11 and 12, the light guide 10 in a known manner structures over which incident light beams are deflected such that they leave the light guide 10 via one of these two sides 11, 12.
  • the surface of the light guide 10 is additionally printed with a pictogram 2, via which the direction of an escape route is displayed.
  • the solution according to the invention is concerned in particular with the problem of the reliable arrangement of the light sources in the region of the light coupling of the light-guiding element 10, the light sources being protected against external influences should.
  • the LEDs should also be protected from other external influences, in particular from the penetration of dust and / or moisture.
  • special measures are provided for this purpose, which are described in more detail below.
  • the basic idea of the solution according to the invention is to embed the board with the LEDs in the light-guiding element 10 in the region of the light coupling and thereby to protect it against external influences. At the same time a reliable and effective coupling of the light is to be made possible in the light guide 10 still.
  • a first measure required for this purpose consists in a special embodiment of the light-guiding element 10, which is described below with reference to FIGS. 2 to 4 should be explained. These figures show the light guide 10 in three different views.
  • the peculiarity of the light-guiding element 10 consists in particular in that the light coupling-in area 13 is provided with a recess 20, in which sunk the LED board is later added.
  • This recess 20 or recess is bounded in the case shown circumferentially by the light guide 10, has an elongated shape and preferably extends substantially over the entire length of the light guide 10 in order also over the entire length of time Lichteinkopplung and thus uniform illumination of the To enable pictogram 2.
  • the bottom surface 21 of the recess 20 (see FIG. 8 ) then forms accordingly the actual light entry surface for the light guide 10.
  • the board 30 with the LEDs 31 (see FIG. 10 ) is preferably not on the entire surface on this light entry surface 21.
  • 21 spacers 22 are provided in the form of ribs or projections in the region of the bottom surface, on which the circuit board 30 rests.
  • these spacers 22 ensure that the LEDs 31 are arranged at a defined distance from the light entry surface 21 and, accordingly, can effectively radiate the light into the light guide element 10, on the other hand, a secure mounting of the circuit board 30 is made possible without twisting or a Tilting is to be feared.
  • FIGS. 5 and 6 Another special feature of the recess 20 is also that it is formed on its two side areas or side walls for special support of a clamping element, which is closer in the FIGS. 5 and 6 is shown and provided with the reference numeral 35.
  • the task of this clamping element 35 is to fix the LED board 30 in an inserted into the recess 20 position.
  • these clamping elements 35 are also the suspension of the lamp 1, as will be described in more detail below.
  • the clamping elements 35 initially have a plate-like region 36, from which a downwardly bent tongue 37 is punched out. At one end of the plate-like portion 36, an upwardly directed web 38 is further formed, which is provided on the one hand at its two longitudinal sides with a toothing 39 and on the other hand has two holes 40. The function of the toothing 39 and the holes 40 will be explained in more detail below.
  • These guide portions 25 are each formed on the two opposite side walls by a guide slot or a groove 26, in which the clamping element 35 is inserted laterally.
  • the recess 20 is formed slightly enlarged adjacent to the guide portion 25 so that from the open side, the clamping member 35 can first be inserted from above and then laterally displaced until it fully engages the plate-like portion 36 in the two guide slots 26.
  • a respectively formed at the beginning of the guide slot 26 and downwardly projecting projection 27 in this case ensures a fixation of the clamping member 35 in the longitudinal direction, so that it can no longer escape from the inserted position.
  • the installation of the escape sign 1 is carried out according to the representation of FIG. 8 then by first of all the board 30 populated with the LEDs 31 being inserted into the recess 20 of the light-guiding element 10.
  • the board 30 is already soldered to the two connection cables or wire ropes 50, which on the one hand the power supply and on the other hand, the suspension of the lamp. 1 serve.
  • the two clamping elements 35 are then inserted in the manner described above and moved in the transverse direction, so that they engage in the guide portions 25.
  • the two cables 50 are then passed under each of the clamping elements 35 and then threaded through the two openings 40 of the web 38, so that the in FIG. 9 shown arrangement results.
  • a strain relief is realized, which allows a suspension of the lamp 1 to the lines for power supply, without affecting the connection to the LED board 30 is affected.
  • the LED board 30 is reliably fixed in the recess 20 of the light-guiding element 10.
  • a filling or potting material In order to enable a complete seal against external influences is now provided to fill the remaining space of the recess 20 with a filling or potting material.
  • the use of a transparent, polyurethane-type potting compound is particularly suitable. This thus fills the remaining areas of the recess 20, in particular the above the board 30 lying areas such that a complete seal against the environment is achieved and, accordingly, a so-called. Protection can be achieved according to IP 42 or even higher.
  • the recess 20 seen over its longitudinal direction is provided with several spacers 28 (see FIG. 2 ). These widenings 28 not only serve to allow the insertion of the clamping elements 35 in the procedure described above, but also allow the air to escape laterally during pouring of the potting compound. Ultimately, therefore, the recess 20 is actually completely filled, so even below the board 30 through the potting compound and the LED board is completely encased and effectively protected from external influences. The light coupling into the light guide 10 is not affected despite everything.
  • a cover plate 60 preferably made of aluminum, is then placed from the upper side, which has two openings 61 for the passage of the suspension cables 50.
  • the Kaschierhülsen 65 serve primarily optical purposes and have an internal thread 66, which screwing the sleeve 65 with the upwardly projecting beyond the potting compound web 38th of Clamping elements 35 allows.
  • a centering ring 67 located at the lower end of the laminating sleeve 65, a correct centered seat of the cover plate 60 is made possible.
  • FIG. 1 in perspective view as well as in FIG. 10 shown in cross-sectional configuration of the escape sign light according to the invention, in which the light emitted by the LEDs 31 light is effectively coupled into the light guide 10 and at the same time a reliable protection of the LED board 30 is guaranteed against external influences.
  • the invention is not limited to escape sign luminaires.
  • the light-guiding element can also be designed otherwise with regard to the alignment and configuration of the surfaces for emitting light.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (10)

  1. Élément de guidage de la lumière (10) pour utilisation dans la disposition de production de lumière à partir d'une pluralité de sources lumineuses sensiblement ponctuelles (31), qui sont disposés sur au moins l'une des zones d'entrée de la lumière (13) de l'élément de guidage de la lumière (10) en formant un côté étroit,
    dans lequel l'élément de guidage de la lumière (10) est adapté à celle des sources de lumière (31) et celle projeté via la zones d'entrée de la lumière (13) perpendiculairement à la surface étroite plate (11, 12),
    caractérisée en ce que
    l'élément de guidage de lumière (10) comprenant une exclusion avec le côté étroit (20) de la zone d'entrée de lumière (13) pour recevoir les sources de lumière (31) est formé conjointement avec un élément de support (30) pour les sources de lumière (31) et délimité par l'élément de guidage de la lumière(10).
  2. Dispositif pour l'émission de lumière avec un élément plat de guidage de lumière (10) selon la revendication 1 ainsi qu'une pluralité de sources lumineuses sensiblement ponctuelles (31),
    qui sont disposées conjointement avec un élément de support (30) pour les sources de lumière (31) dans l'exclusion (20) de l'élément de guidage de lumière (10).
  3. Dispositif de sortie de lumière selon la revendication 2,
    caractérisé par
    ce que l'élément de guidage de lumière (10) dans l'exclusion (20), en particulier sur une surface inférieure (21) présente des saillies ou des nervures (22) qui constituent des paliers pour l'élément de support (30) pour les sources de lumière (31).
  4. Dispositif selon la revendication 2 ou 3,
    caractérisé en ce que
    l'élément de support (30) pour les sources de lumière (31) est fixé dans l'exclusion (20) à l'aide d'un ou plusieurs éléments de serrage (35).
  5. Dispositif selon la revendication 4,
    caractérisé en ce que
    l'exclusion (20) présente sur ses parois latérales des moyens de blocage ou de fixation de l'élément de serrage (35).
  6. Dispositif selon la revendication 4 ou 5,
    caractérisé en ce que
    le ou les éléments de serrage (35) présentent des moyens de fixation ou de suspension (50) pour le dispositif.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que
    le ou les éléments de serrage (35) comprenant une des exclusions (20) faisant saillie (38), comprend l'ouverture (40) pour le passage et la charge d'un élément de suspension (50) de type corde.
  8. Dispositif selon l'une des revendications 2 à 7,
    caractérisé en ce que
    l'exclusion (20) est couverte d'un enrobage ou revêtement.
  9. Dispositif selon l'une des revendications 2 à 8,
    caractérisé en ce que
    l'élément de guidage de lumière (10) forme un coin.
  10. Dispositif selon l'une des revendications 2 à 9,
    caractérisé en ce que
    cet élément est un luminaire à pictogramme (1).
EP13161950.4A 2012-04-05 2013-04-02 Ensemble d'émission de lumière avec élément d'éclairage plat Active EP2648178B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202012101244U DE202012101244U1 (de) 2012-04-05 2012-04-05 Anordnung zur Lichtabgabe mit flächigem Lichtleitelement

Publications (3)

Publication Number Publication Date
EP2648178A2 EP2648178A2 (fr) 2013-10-09
EP2648178A3 EP2648178A3 (fr) 2014-04-23
EP2648178B1 true EP2648178B1 (fr) 2015-06-10

Family

ID=47998321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13161950.4A Active EP2648178B1 (fr) 2012-04-05 2013-04-02 Ensemble d'émission de lumière avec élément d'éclairage plat

Country Status (2)

Country Link
EP (1) EP2648178B1 (fr)
DE (1) DE202012101244U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015219947A1 (de) * 2015-10-14 2017-04-20 Zf Friedrichshafen Ag Schaltungsträger und Verfahren zur Herstellung desselben
DE102021103957A1 (de) 2021-02-19 2022-08-25 Zumtobel Lighting Gmbh Rettungszeichenleuchte mit Rettungswegbeleuchtung
DE202022101995U1 (de) 2022-04-13 2023-07-18 Zumtobel Lighting Gmbh Lichtleitelement für Rettungszeichenleuchte
DE202022103416U1 (de) 2022-06-20 2023-10-09 Zumtobel Lighting Gmbh Rettungszeichenleuchte mit zusätzlicher Rettungswegbeleuchtung
DE102022108996A1 (de) 2022-04-13 2023-10-19 Zumtobel Lighting Gmbh Lichtleitelement beispielsweise für rettungszeichenleuchte

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29514090U1 (de) * 1995-09-04 1995-11-16 Schulz Juergen Dipl Ing Gehäuselose Rettungszeichenleuchte
SE512755C2 (sv) * 1997-07-08 2000-05-08 Lisol Scandinavia Ab Belyst visningsenhet samt metod för tillverkning av densamma
DE29912986U1 (de) * 1999-07-26 2000-05-11 Renic Anton Zeichenartige Leuchtmarke
DE19945495A1 (de) * 1999-09-22 2001-04-05 Daniel Wustlich Ausgeleuchtetes plattenartiges Element
DE10123006B4 (de) * 2001-05-12 2014-07-10 P.E.R. Flucht- Und Rettungsleitsysteme Gmbh Leuchtvorrichtung zur Erzeugung einer aktiv nachleuchtenden Signalfläche
DE20114561U1 (de) * 2001-09-04 2003-01-23 Ceag Sicherheitstechnik Gmbh Scheibenleuchte
DE102004055337A1 (de) * 2003-11-17 2005-06-23 Russler, Theodor Illuminationsmittel, insbesondere für den Außenbereich, wie Gebäudeaußenflächen und Gartenanlagen
KR20100077677A (ko) * 2008-12-29 2010-07-08 삼성전자주식회사 백라이트 유닛 및 이를 갖는 액정표시장치

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015219947A1 (de) * 2015-10-14 2017-04-20 Zf Friedrichshafen Ag Schaltungsträger und Verfahren zur Herstellung desselben
DE102021103957A1 (de) 2021-02-19 2022-08-25 Zumtobel Lighting Gmbh Rettungszeichenleuchte mit Rettungswegbeleuchtung
DE202022101995U1 (de) 2022-04-13 2023-07-18 Zumtobel Lighting Gmbh Lichtleitelement für Rettungszeichenleuchte
DE102022108996A1 (de) 2022-04-13 2023-10-19 Zumtobel Lighting Gmbh Lichtleitelement beispielsweise für rettungszeichenleuchte
WO2023198456A1 (fr) 2022-04-13 2023-10-19 Zumtobel Lighting Gmbh Élément de guidage de lumière pour luminaire de secours
DE202022103416U1 (de) 2022-06-20 2023-10-09 Zumtobel Lighting Gmbh Rettungszeichenleuchte mit zusätzlicher Rettungswegbeleuchtung

Also Published As

Publication number Publication date
DE202012101244U1 (de) 2013-07-09
EP2648178A2 (fr) 2013-10-09
EP2648178A3 (fr) 2014-04-23

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