EP2287826B1 - Dispositif d'éclairage à LED pour tableaux d'affichage et publicitaire - Google Patents

Dispositif d'éclairage à LED pour tableaux d'affichage et publicitaire Download PDF

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Publication number
EP2287826B1
EP2287826B1 EP20090168200 EP09168200A EP2287826B1 EP 2287826 B1 EP2287826 B1 EP 2287826B1 EP 20090168200 EP20090168200 EP 20090168200 EP 09168200 A EP09168200 A EP 09168200A EP 2287826 B1 EP2287826 B1 EP 2287826B1
Authority
EP
European Patent Office
Prior art keywords
led
leds
display
illumination device
strips
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.)
Not-in-force
Application number
EP20090168200
Other languages
German (de)
English (en)
Other versions
EP2287826A1 (fr
Inventor
Erwin Baumstark
Bernd Eschbach
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.)
Dambach Werke GmbH
Original Assignee
Dambach Werke GmbH
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 Dambach Werke GmbH filed Critical Dambach Werke GmbH
Priority to EP20090168200 priority Critical patent/EP2287826B1/fr
Publication of EP2287826A1 publication Critical patent/EP2287826A1/fr
Application granted granted Critical
Publication of EP2287826B1 publication Critical patent/EP2287826B1/fr
Not-in-force 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
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • 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
    • 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
    • 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
    • G09F2013/1886—Special effects
    • G09F2013/189—Three dimensional effects
    • G09F2013/1895—Imitating a neon tube
    • 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 an LED lighting device for display and billboards.
  • LEDs Light Emitting Diodes
  • the LEDs have a different light structure than fluorescent tubes. If fluorescent tubes, because of their size, produce a planar illumination, a single LED can only produce a point or circular illumination surface with a relatively small size. To illuminate a surface thus a plurality of LEDs is necessary. In this case, individual LEDs or LED strips can be used, which have a plurality of LEDs.
  • FIG. 1 An embodiment of a LED lighting device according to the prior art is shown.
  • a housing has two parallel, spaced-apart display walls A, between which a holding plate H is arranged in the middle.
  • the holding plate H is arranged by each display wall A with a distance according to arrow D.
  • On the retaining plate H light-emitting diodes or LEDs L are arranged at regular intervals and symmetrically such that they irradiate the insides of the display walls A directly.
  • a display and billboard LED lighting device comprising a housing having two parallel, spaced apart display walls and a peripheral end wall for forming an interior space, and a plurality of individual LEDs or LED strips substantially are arranged distributed over the inner surface of the interior, wherein one half of the LEDs are directed directly to a display wall and the other half of the LEDs directly to the other display wall, whereby the walls are illuminated from the inside.
  • the present invention is therefore based on the object to provide an LED lighting device for display and billboards, which has a small size.
  • the LED lighting device is characterized in that the individual LEDs or the LED bands are arranged on zigzag or wavy bands, wherein between two individual LEDs or LED strips that illuminate a display wall, a single LED or an LED band is illuminated, which illuminates the other display wall, and that the zigzag or wavy structure of the LED bands is designed so that the LEDs are arranged offset from a central plane, so that the LEDs the greatest possible distance allow each of the illuminated display wall.
  • the LEDs Due to the zigzag or wavy structure of the LEDs holding bands, the LEDs are arranged offset from the center plane, whereby the distance between the two display walls can be reduced to each other and thereby results in a smaller size of the lighting device.
  • the zigzag-shaped bands have a holding section for the respective individual LED, as a result of which the LEDs can be easily mounted and aligned.
  • the holding sections are arranged substantially parallel to the display walls, so that a uniform alignment of the LEDs for uniform illumination of the display walls is provided from the inside.
  • the opening angles of the zigzag-shaped bands are not greater than the opening angle of the light beams emitted by the LED. This leads to an optimal illumination of the display walls with simultaneous minimum distance of the two from each other.
  • the illumination surfaces of the LED light beams impinging on the display walls adjacent LEDs overlap at least partially.
  • the wavy bands are formed substantially sinusoidal wave-shaped, whereby a very uniform waveform is achieved.
  • the LED strips are preferably arranged in the wave troughs of the wavy bands.
  • the LEDs that irradiate one side may have a different color than the LEDs that illuminate the other side. Also, the LEDs on one side may have different colors to create a special (mixing) effect.
  • FIGS. 2 to 6 are the same elements with the same reference numerals.
  • Fig. 2 is a perspective view and schematically a first embodiment of an LED lighting device 1 according to the invention shown.
  • This has a housing 3 with two parallel, spaced apart display walls 5.
  • the front display wall is removed to reveal the view of the interior of the housing 3.
  • a peripheral end wall 7 is provided to form an interior in which the lighting is located. As it were, this also forms a frame around the illumination device.
  • Fig. 2 As can be seen, individual light-emitting diodes or individual LEDs 9 are arranged on zigzag-shaped strips 11. In order to achieve a good mounting and alignment of the LEDs 9, the bands 11 have a holding section 13 for each individual LED 9.
  • Fig. 3 the principle of the arrangement of the LEDs 9 becomes even clearer. Between two LEDs 9, which illuminate a display wall 5, an LED 9 is arranged, which illuminates the other display wall. As from the comparison of Fig. 1 and 3 can be seen, the double arrow 15, which indicates the distance between the two display walls 5, significantly less than twice the distance of the double arrow D of Fig. 1 ,
  • the opening angle of two legs of a zigzag shape of the bands 11 is not greater than the maximum opening angle of the light beams of an LED 9. This ensures that with optimum light output the smallest possible distance 15 is realized.
  • Fig. 4 the LED lighting device according to the invention is shown with a front display wall 5, which has as an indication the letter "P", so for example for the display of a parking lot or parking garage.
  • the broken-off portion of the front display wall 5, as the bands 11 This is done, for example, as shown, via portions 17.
  • a power cable 19 with a plug 21 shown schematically current is supplied to the LED lighting device and a power cable 23 connects the LEDs together.
  • Fig. 5 is similar to the representation of Fig. 2 schematically shows a second embodiment of the LED lighting device according to the invention.
  • the LED lighting device 31 in turn has a housing 3 with parallel display walls 5, again the front display wall is removed to release the view of the interior of the lighting device 31.
  • the peripheral end wall 7 is present.
  • the individual LEDs 9 are arranged in this embodiment on wavy bands 33 and radiate alternately on the one and the other display wall 5. As out Fig. 5 can be seen, the individual LEDs 9 are arranged in the troughs 35 in order to allow the greatest possible distance from the respective illuminated display wall 5.
  • the wavy bands 33 are sinusoidal-wave-shaped.
  • Fig. 6 an alternative embodiment of the single LED is shown, namely in the form of an LED strip 37, which in the example according to Fig. 6 has three LEDs 39.
  • the LED strips 37 are likewise arranged in the region of the wave troughs 35 of the sine-wave band 33.
  • LED lighting device thus an optimal adaptation to a minimum size of the lighting device is achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Claims (9)

  1. Dispositif d'éclairage à DEL (1, 31) pour tableaux d'affichage et publicitaires, avec :
    - un boîtier (3), qui comprend deux parois d'affichage (5) parallèles, écartées l'une de l'autre, et une paroi frontale périphérique (7) pour former un espace interne,
    - une pluralité de DEL individuelles (9) ou de bandes de DEL (37), qui sont disposées avec une répartition sensiblement uniforme sur la surface interne de l'espace interne, une moitié des DEL (9, 39) étant dirigées directement vers une paroi d'affichage et l'autre moitié des DEL (9, 39) étant dirigées directement vers l'autre paroi d'affichage, les parois (5) pouvant de ce fait être éclairées de l'intérieur, caractérisé
    en ce que les DEL individuelles (9) ou les bandes de DEL (37) sont disposées sur des bandes en forme de zigzags ou d'ondes (11, 33), de telle sorte qu'entre deux DEL individuelles (9) ou deux bandes de DEL (37), qui éclairent une paroi d'affichage, soit disposée une DEL individuelle ou une bande de DEL qui éclaire l'autre paroi d'affichage, et
    en ce que la structure en forme de zigzags ou d'ondes des bandes de DEL (37) est agencée de manière telle que les DEL d'un plan central soient disposées décalées de sorte que les DEL (9) permettent la plus grande distance possible à la paroi d'affichage (5) respectivement éclairée.
  2. Dispositif d'éclairage à DEL selon la revendication 1, caractérisé en ce que les bandes en forme de zigzags (11) comportent une section de support (13) pour chaque DEL individuelle (9).
  3. Dispositif d'éclairage à DEL selon la revendication 2, caractérisé en ce que les sections de support (13) sont disposées sensiblement parallèles aux parois d'affichage (5).
  4. Dispositif d'éclairage à DEL selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les angles d'ouverture des bandes en forme de zigzags (11) ne sont pas plus grands que l'angle d'ouverture des rayons lumineux émis par les DEL (9).
  5. Dispositif d'éclairage à DEL selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les surfaces d'éclairage de rayons lumineux, incidents sur les parois d'affichage (5), de DEL voisines, qui éclairent la même paroi d'affichage, se recouvrent au moins partiellement.
  6. Dispositif d'éclairage à DEL selon la revendication 1, caractérisé en ce que les bandes en forme d'ondes (33) ont sensiblement une forme d'ondes sinusoïdales.
  7. Dispositif d'éclairage à DEL selon la revendication 1 ou 6, caractérisé en ce que les bandes de DEL (37) sont disposées dans la partie des vallées des ondes (35) des bandes en forme d'ondes (33).
  8. Dispositif d'éclairage à DEL selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la lumière émise par les différentes DEL individuelles (9) respectivement les DEL (39) des bandes de DEL (37) peut être de différentes couleurs.
  9. Dispositif d'éclairage à DEL selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les DEL (39) d'une bande de DEL (37) peuvent émettre une lumière de couleur différente.
EP20090168200 2009-08-19 2009-08-19 Dispositif d'éclairage à LED pour tableaux d'affichage et publicitaire Not-in-force EP2287826B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20090168200 EP2287826B1 (fr) 2009-08-19 2009-08-19 Dispositif d'éclairage à LED pour tableaux d'affichage et publicitaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090168200 EP2287826B1 (fr) 2009-08-19 2009-08-19 Dispositif d'éclairage à LED pour tableaux d'affichage et publicitaire

Publications (2)

Publication Number Publication Date
EP2287826A1 EP2287826A1 (fr) 2011-02-23
EP2287826B1 true EP2287826B1 (fr) 2014-04-09

Family

ID=41026380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090168200 Not-in-force EP2287826B1 (fr) 2009-08-19 2009-08-19 Dispositif d'éclairage à LED pour tableaux d'affichage et publicitaire

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EP (1) EP2287826B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7473020B2 (en) * 2006-07-07 2009-01-06 William Pickering Light emitting diode display system
DE202006018594U1 (de) * 2006-12-11 2007-03-01 Wll Wehrsdorfer Led-Lichttechnik Gmbh Leuchtkörper
EP2195803A1 (fr) * 2007-09-17 2010-06-16 Lumination LLC Système d'éclairage à led pour caisson

Also Published As

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EP2287826A1 (fr) 2011-02-23

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