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WO2008085161A1 - Panneau de rétroéclairage et son procédé de fabrication - Google Patents

Panneau de rétroéclairage et son procédé de fabrication Download PDF

Info

Publication number
WO2008085161A1
WO2008085161A1 PCT/US2007/000522 US2007000522W WO2008085161A1 WO 2008085161 A1 WO2008085161 A1 WO 2008085161A1 US 2007000522 W US2007000522 W US 2007000522W WO 2008085161 A1 WO2008085161 A1 WO 2008085161A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight panel
sheet
lampholder
tubes
parallel
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.)
Ceased
Application number
PCT/US2007/000522
Other languages
English (en)
Inventor
Robert M. Krohn
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.)
LIGHTING PANELS LLC
Original Assignee
LIGHTING PANELS LLC
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 LIGHTING PANELS LLC filed Critical LIGHTING PANELS LLC
Priority to PCT/US2007/000522 priority Critical patent/WO2008085161A1/fr
Publication of WO2008085161A1 publication Critical patent/WO2008085161A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps

Definitions

  • the present invention relates to a fluorescent or light emitted diode
  • LED illuminated backlight panel and more particularly, to an improved backlight panel including a plastic lampholder sheet, comprised of a multiplicity of longitudinal tubes for properly spacing, housing and protecting the inserted fragile fluorescent lamps or LED strips.
  • edge-lit lightboxes are very heavy, relatively deep, use a lot of power and have limited lamp life.
  • Edgelit lightboxes are thin, but they are very heavy, very expensive, very difficult to service and are not very bright.
  • the lamps used in edge-lit lightpanels normally CCFL's (cold-cathode fluorescent lamps) or EEFL's (external electrode fluorescent lamps) are extremely fragile. It is also very difficult, in all forms, to make a thin, bright, curved lightbox or lightpanel.
  • U.S. Patent No. 6,674,250 discloses a backlight including external electrode fluorescent lamps and a method for driving the backlight.
  • the backlight includes fluorescent lamps having external electrodes made of an electrically conductive material for wrapping the outer peripheral surfaces including edge cross- sections on both ends of a glass tube with a layer of fluorescent substance applied thereon.
  • the backlight is constructed in a manner that a plurality of such fluorescent lamps are installed at the outer portions of a plastic light guide, and an alternating current type power source is applied from the outside to the fluorescent lamps by installing a plurality of the fluorescent lamps between a reflecting plate and a diffusing plate and electrically connecting them with one another.
  • U.S. Patent No. 6,843,584 discloses a backlight device including a plurality of fluorescent lamps each having a tube and lamp electrodes formed at opposing ends of the tube arranged parallel with each other along a first direction, a lower lamp fixing assembly of a first height having a first plurality of grooves disposed along a second direction for holding the ends of the plurality of fluorescent lamps, and an upper lamp fixing assembly having a second height, the upper lamp fixing assembly having a second plurality of grooves, a first end portion have a first width facing the lower lamp fixing assembly, and a second end portion having a second width smaller than the first width, wherein portions of the ends of each of the tubes are exposed at an exterior of the lower and upper lamp fixing assemblies.
  • U.S. Patent No. 6,984,056 discloses a lighting device invention including a pair of sockets made of a soft and elastic conductor and arranged facing each other, with which electric power is supplied to EEFL lamps.
  • the present invention relates to a backlight panel comprising:
  • the present invention may further comprise a wiring harness and an inverter or ballast.
  • FIG. 1 - Is an end-view of a plastic lampholder sheet, comprised of:
  • FIG. 2 - Is a perspective view of a plastic lampholder sheet.
  • FIG. 3 - Is a perspective view showing lamps inserted into a plastic lampholder sheet.
  • FIG. 4 - Is a perspective view of a plastic lampholder sheet in which the hollow square tubes that contain the fluorescent lamps are shorter than the adjacent hollow square tubes, providing for extra protection for the ends of the fluorescent lamps.
  • FIG. 5 - Is a perspective view of a plastic lampholder sheet with fluorescent lamps inserted and wiring harness attached.
  • FIG. 6 - Is a perspective view showing an LED strip inserted into a plastic lampholder sheet and wiring harness attached.
  • FIG. 7 - Is a perspective view of a plastic lampholder sheet which has been slit, cut or otherwise kerfed in order to provide flexibility to the backlight panel.
  • FlG. 8 - Is a close-up of the perspective view of a plastic lampholder sheet of FIG. 7, which has been slit, cut or otherwise kerfed in order to provide flexibility to the backlight panel.
  • the present invention relates to a backlight panel comprising:
  • the present invention may further comprise a wiring harness and an inverter or ballast.
  • the backlight panel is constructed in a manner that one or more fluorescent lamps or LEDs are inserted into a series of hollow, parallel plastic tubes supported between two parallel plastic walls ( Figure 3).
  • the plastic tubes and walls are preferably extruded from polycarbonate, although other plastic types and manufacturing methods may be utilized.
  • the tubes and walls of the lampholder sheet may also be manufactured from materials such as scrim or other materials made from fibers, natural or synthetic.
  • the tubes of the lampholder sheet may be square, round or of a shape to accommodate the shape of the lamp which is to be inserted into the tube.
  • the lampholder sheet of the present invention may be curved by longitudinally slitting-through a series of the hollow, square tubes on one-or-two sides of the sheet (kerf ⁇ ng), allowing the sheet to bend, yielding a flexible backlight panel.
  • the backlight panel of the present invention is illuminated via fluorescent lamps or LEDs, employing, but not limited to, cold-cathode fluorescent lamps, external electrode fluorescent lamps or LEDs ( Figures 3, 5 and 6). These lamps are typically driven by, but are not limited to, commercially available inverters utilizing a square wave, sine wave, fluorescent ballasts or switching power supplies. A wiring harness is utilized to carry the proper voltage, current and frequency to the ends of each lamp or LED ( Figures 5 and 6).
  • the lamps of the present invention either CCFLs, EEFLs, thin fluorescent lamps, or LEDs are protected from shock and breakage by being contained within the tough, rigid, plastic lampholder sheet.
  • the spacing of the lamps or LEDs is easily changed, thus altering the numbers of lights and the brightness of the sheet.
  • Double-sided lightboxes can be easily and inexpensively manufactured to under three inches in depth.
  • the rigidity and protection afforded by the plastic lampholder sheet allows for the ease of manufacture of lightpanels for use without the necessity of additional protection by metal or plastic cover-bodies, since the plastic lampholder sheet serves as both protection for the lamps and LEDs and as method of lamp and LED mounting.
  • CCFLs, EEFLs, thin fluorescent lamps, or LEDs are protected from shock and breakage by being contained within the plastic lampholder sheet, either with or without plastic, rubber or synthetic, square, circular, or shaped "O"-ring types of spacers encircling the lamps.
  • the spacing of the lamps or LEDs (the distance between lamps) is easily changed. This change in lamp or LED spacing alters the number of lamps or LEDs used in the lightpanel, thus changing the brightness of the lightpanel and altering the distance needed between the plane of the lamps and an illuminated substrate in order to achieve even illumination across the face of the illuminated substrate.
  • the mounting (insertion) of the lamps within the hollow tubes of the transparent or translucent lampholder sheet allows for the very easy manufacture of double-sided lightpanels and lightboxes, since the illumination from the lamps shines out of both sides of the lampholder sheet, if it is transparent or translucent. Double- sided lightboxes can be easily and inexpensively manufactured to under three inches in depth.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

La présente invention porte sur un panneau de rétroéclairage comprenant : (a) une feuille de douille en matière plastique transparente comprenant deux parois parallèles ou plus supportées par des nervures longitudinales espacées parallèles intermédiaires formant une série de tubes creux; et (b) une ou plusieurs lampes dans lesquelles chaque lampe est introduite dans l'un desdits tubes creux. La présente invention peut en outre comprendre un harnais de câble et un inverseur ou ballast. La feuille de douille en matière plastique à double paroi est mince, durable et légère, protégeant les lampes fragiles et fournissant un procédé simple de montage et de câblage. La feuille de douille en matière plastique peut également être fendue sur un ou les deux côtés, produisant un panneau de lumière flexible; des points gradués ou des lignes graduées peuvent également être imprimées sur la surface de la feuille de douille en matière plastique ou des matériaux translucides peuvent être utilisés sur la surface de la feuille de douille en matière plastique pour aider à rendre l'intensité de la lumière à travers la surface de la feuille encore plus uniforme.
PCT/US2007/000522 2007-01-09 2007-01-09 Panneau de rétroéclairage et son procédé de fabrication Ceased WO2008085161A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2007/000522 WO2008085161A1 (fr) 2007-01-09 2007-01-09 Panneau de rétroéclairage et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/000522 WO2008085161A1 (fr) 2007-01-09 2007-01-09 Panneau de rétroéclairage et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2008085161A1 true WO2008085161A1 (fr) 2008-07-17

Family

ID=39608918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/000522 Ceased WO2008085161A1 (fr) 2007-01-09 2007-01-09 Panneau de rétroéclairage et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2008085161A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012064312A (ja) * 2010-09-14 2012-03-29 Sain:Kk 照明装置及びそれを用いた看板

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244317A (en) * 1979-03-15 1981-01-13 Canadian Marconi Company Bargraph light guide
US4864475A (en) * 1989-02-24 1989-09-05 Jung Hae Ryong Rainbow light box
US5347735A (en) * 1992-11-05 1994-09-20 Pratt Howard A Presentation aid having multiple illumination sources
US5379540A (en) * 1993-11-17 1995-01-10 The Howard Company Modular sign system
US5966856A (en) * 1996-03-20 1999-10-19 Alu; T. Bryan Illuminated sign light box
RU2178588C1 (ru) * 2000-05-03 2002-01-20 Марков Валерий Николаевич Световая панель
US6667089B1 (en) * 1999-03-31 2003-12-23 B Consultants Limited Composite panel and method of manufacture
WO2004079701A1 (fr) * 2003-03-04 2004-09-16 Corporation Rololight Module pliable eclaire et systeme de presentation
JP2006049256A (ja) * 2004-08-04 2006-02-16 Faatsu:Kk 蛍光管発光板ユニット
US20060109643A1 (en) * 2004-11-24 2006-05-25 Se-In Chang Backlight assembly and liquid crystal display device having the same

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244317A (en) * 1979-03-15 1981-01-13 Canadian Marconi Company Bargraph light guide
US4864475A (en) * 1989-02-24 1989-09-05 Jung Hae Ryong Rainbow light box
US5347735A (en) * 1992-11-05 1994-09-20 Pratt Howard A Presentation aid having multiple illumination sources
US5379540A (en) * 1993-11-17 1995-01-10 The Howard Company Modular sign system
US5966856A (en) * 1996-03-20 1999-10-19 Alu; T. Bryan Illuminated sign light box
US6667089B1 (en) * 1999-03-31 2003-12-23 B Consultants Limited Composite panel and method of manufacture
RU2178588C1 (ru) * 2000-05-03 2002-01-20 Марков Валерий Николаевич Световая панель
WO2004079701A1 (fr) * 2003-03-04 2004-09-16 Corporation Rololight Module pliable eclaire et systeme de presentation
JP2006049256A (ja) * 2004-08-04 2006-02-16 Faatsu:Kk 蛍光管発光板ユニット
US20060109643A1 (en) * 2004-11-24 2006-05-25 Se-In Chang Backlight assembly and liquid crystal display device having the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012064312A (ja) * 2010-09-14 2012-03-29 Sain:Kk 照明装置及びそれを用いた看板

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