|Publication number||US3892959 A|
|Publication date||Jul 1, 1975|
|Filing date||Nov 2, 1973|
|Priority date||Nov 2, 1973|
|Publication number||US 3892959 A, US 3892959A, US-A-3892959, US3892959 A, US3892959A|
|Inventors||Eduard J Pulles|
|Original Assignee||Gte Automatic Electric Lab Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (103), Classifications (19), Legal Events (1) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Edge-lighted panel arrangement
US 3892959 A
An edge-lighted panel having a number of light sources coupled to a length of flexible wiring which is arranged to be removably affixed about the peripheral edge of the panel, with the light sources disposed within light receiving cavities in the marginal portion of the panel.
United tau W1, 12 u Pulles EDGE-LIGHTED PANEL ARRANGEMENT Eduard ,l. Pulles, Huntsville, Ala.
GTE Automatic Electric Laboratories Incorporated, Northlake, 111.
Filed: Nov. 2, 1973 Appl. No.: 412,237
US. Cl 240/1 EL; 240/2.1; 350/96 R Int. Cl. F21 Field of Search 240/1 EL, 2.1, 6.43, 2.17;
References Cited UNITED STATES PATENTS Hoff 240/1 EL July 1, 1975 2,988,631 6/1961 Hershey et a1 240/1 EL 3,497,686 2/1970 Young 350/96 R 3,752,974 8/1973 Baker 240/1 EL 3,760,175 9/1973 Gibson et all 240/1 EL Primary ExaminerRichard L. Moses Attorney, Agent, or FirmRobert 1. Black [5 7 ABSTRACT An edge-lighted panel having a number of light sources coupled to a length of flexible wiring which is arranged to be removably affixed about the peripheral edge of the panel, with the light sources disposed within light receiving cavities in the marginal portion of the panel.
7 Claims, 3 Drawing Figures 1 EDGE-LIGHTED PANEL ARRANGEMENT This invention relates to an improvement in edgelighted-panels.
Edge-lighting has been used for illuminating instrument dials, panels, plotting boards for shipboard and aircraft'aswell as other similar purposes. The illumination of 'such devices generally is by means of one or more light sources located at the edge of a transparent panel and light rays introduced into the panel for transillumination thereof and indirect illumination thereby. Various arrangements for edge-lighting various types of panels are disclosed in US. Pat. Nos. 3,027,669; 3,070,913; and 3,356,839. The edge-lighting in these prior disclosures are attached to the panels by means of frame'members adapted to support therein a number of lamps or by means of light sockets affixed in some suitable fashion to the panel.
In accordance with the present'invention, a convenient, low-cost method of lighting a panel using contemporary components and techniques is provided. A piece of flexible wiring or circuit snaps onto the panel to be lit, and the terminals form an integral part of the flexible wiring strip. Light emitting diodes are mounted on the flexible wiring and fit within recesses formed in the panel.
Accordingly, it is an object of the present invention to provide a convenient, low-cost method of edgelighting a panel.
The invention, together with the above and other objects and advantages thereof, is set forth in more detail in the following description when considered in connection with the accompanying drawings wherein like reference numerals designate like parts throughout the several views thereof, and wherein:
FIG. 1 is a perspective view of an edge-lighted panel exemplary of the invention;
FIG. 2 is a top plan view of the edge-lighted panel of FIG. I; and
FIG. 3 is an enlarged view generally illustrating the snap-on feature of the flexible wiring.
Referring now to the drawing, a panel or light transmitting member made of glass or a highly transparent plastic is edge-lighted by a length of flexible wiring or circuit 12 having light emitting diodes 14 mounted thereon which is removably secured about the peripheral edge of the panel. In the illustrated embodiment, the panel 10 may form a part of a lighted touch calling telephone, and functions to illuminate a push button, such as the push button 16.
The panel or light transmitting member 10 comprises a relatively flat, highly transparent plate, having its front and back surfaces in parallel relation to each other and preferably polished to provide smooth optical surfaces. It is preferably fabricated from an acrylic resin or methyl methacrylate plastic material of the thermal plastic type such as, for example, commercial Plexiglas or Lucite. The bottom surface of the panel or light transmitting member 10 preferably is made reflective, by some suitable means, such as a coating with mirror silver. The coating should be opaque so that no light escapes from the bottom surface of the panel, and all is reflected upwardly. The upper surface should be formed to be translucent and diffusing, and non-transparent, so as to minimize spots of excessive brilliance and achieve a softly diffused pool of light over the upper surface. A number of recessed cavities 18 which may be semi-circular in shape as illustrated are formed in spaced relationship about the peripheral edge of the panel 10 and, with the exception of these cavities, the edges of the panel 10 are sandblasted or painted to make them opaque so that no light escapes.
A length of flat flexible wiring or circuit which may be, for example, a length of flat flexible plastic material having an electrical conductor or conductors imbedded therein has a number of light emitting diodes l4 affixed to it and electrically coupled with the conductor or conductors so as to be energized when the flexible wiring or circuit is connected to an appropriate power source (not shown). The light emitting diodes 14 are positioned on the flexible wiring or circuit 12 to fit within the cavities 18 in the edge of the panel 10, when the flexible wiring or circuit 12 is affixed to the panel, as described more fully below.
The flexible wiring or circuit 12 preferably is removably affixed to the panel 10, and this can be accomplished in various different manners, using snapfasteners or the like. A preferred manner of doing so, because of its simplicity and inexpensiveness is to form a number of projections 20 on the peripheral edge of the panel 10, and to provide the flexible wiring or circuit with a number of openings 22 which are formed and positioned to receive therethrough these projections 20. The shape of the projections 20 and the openings 22 in the flexible wiring or circuit may vary, but preferably both are shaped and proportioned to provide a snap-on feature.
For the purpose of establishing a connection with the power source (not shown) the flexible wiring or circuit can have a terminal 25 on each of its opposite'ends, as illustrated, or two terminals can be provided on one end thereof.
From the above description of the edge lighted panel arrangement, it can be seen that the flexible wiring or circuit 12 can be easily and quickly affixed to the panel 10, simply by snap-fitting the projections 20 on the edge of the panel through the openings 22 in the flexible wiring or circuit. By properly positioning these projections and the openings, as well as the light emitting diodes 14 thereon, the light emitting diodes will be disposed within the cavities 18 formed in the edge of the panel 10. Thereafter, the terminals 25 on the end or ends of the flexible wiring or circuit is connected to the power source to energize the light emitting diodes. The lighting can be easily and quickly removed and replaced, simply by removing the flexible wiring or circuit and snap-fitting a new length of it onto the panel 10 in the manner described.
It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained and certain changes may be made in carrying out the above method and in the constructions set forth. Accordingly, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Now that the invention has been described, what is claimed as new and desired to be secured by letters Patent is:
1. In combination, a transparent light-transmitting panel having front and rear surfaces arranged for specular reflection of light therebetween and a marginal portion for receiving light, said marginal portion being provided with a plurality of spaced openings for receiving light sources and with a plurality of spaced fastening means, a length of flexible material carrying electrical conductor means and having a plurality of complimentary fastener means for fastening with the fastening means on said marginal portion of said panel. a plurality of light sources carried by said length of flexible material and electrically connected with said electrical conductor means so as to be energized when said electrical conductor means is connected to a source of power, said length of flexible material being affixed about said marginal portion of said panel by mating together said fastening means, said plurality of light sources being positioned on said length of flexible material so as to be disposed within said spaced openings when said flexible material is affixed to said panel, whereby edge-lighting for said panel can be provided simply by affixing said flexible material to said panel and coupling the electrical conductor means to a source of power.
2. The combination of claim 1, wherein said fastening means on said panel comprises a plurality of projections and wherein said fastening means on said flexible material comprises a plurality of openings in said flexible material proportioned to receive said projections to permit said flexible material to be affixed to said panel.
3. The combination of claim 1, wherein said flexible material has connector means on one end thereof for coupling said electrical conductor means to a source of power.
4. The combination of claim 1, wherein said flexible material has connector means on each of the opposite ends thereof for coupling said electrical conductor means to a source of power.
5. The combination of claim 1, wherein said plurality of light sources comprise light emitting diodes.
6. The combination of claim 1, wherein said length of flexible material is a plastic material having said electrical conductor means imbedded therein.
7. The combination of claim 1, wherein said length of flexible material is a plastic material having a metallic conductor deposited thereon to provide said electrical conductor means.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2476257 *||Apr 15, 1946||Jul 12, 1949|| ||Means for illuminating|
|US2988631 *||Jun 11, 1959||Jun 13, 1961||Bell Telephone Labor Inc||Telephone dial light|
|US3497686 *||Oct 20, 1965||Feb 24, 1970||David Horace Young||Illuminated display apparatus|
|US3752974 *||Dec 13, 1971||Aug 14, 1973||Coastal Dynamics Corp||Uniform illumination with edge lighting|
|US3760175 *||Sep 22, 1972||Sep 18, 1973||Us Army||Uncooled gallium-aluminum-arsenide laser illuminator|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4128298 *||Dec 27, 1976||Dec 5, 1978||Recognition Equipment Incorporated||Wand nose with integral light pipe for wand power turn-on|
|US4177501 *||Nov 15, 1977||Dec 4, 1979||Harris Corporation||Illuminated keyboard|
|US4416075 *||Oct 28, 1981||Nov 22, 1983||Bauer Ronald E||Illuminated cake decoration|
|US4802066 *||Jun 4, 1987||Jan 31, 1989||Kei Mori||Bed employed for light bathing|
|US4839776 *||Aug 3, 1987||Jun 13, 1989||Grossnickle Paul G||Illumination means for vehicle side walls|
|US4841455 *||Aug 3, 1987||Jun 20, 1989||Vexcel Corporation||Reseau apparatus for photogrammetry devices|
|US4975808 *||Oct 2, 1989||Dec 4, 1990||Motorola, Inc.||Backlighting apparatus|
|US5130898 *||May 18, 1990||Jul 14, 1992||Seiko Epson Corporation||Background lighting apparatus for liquid crystal display|
|US5136483 *||Aug 28, 1990||Aug 4, 1992||Schoeniger Karl Heinz||Illuminating device|
|US5153590 *||Feb 4, 1991||Oct 6, 1992||Motorola, Inc.||Keypad apparatus|
|US5163748 *||Feb 14, 1992||Nov 17, 1992||Messinger David L||Illuminated clipboard|
|US5249077 *||Dec 12, 1991||Sep 28, 1993||Microvideo Instruments, Inc.||Darkfield illuminator for a microscope slide|
|US5276591 *||Jul 23, 1992||Jan 4, 1994||William Hegarty||Sign with indirect illumination from light emitting diodes|
|US5355289 *||Aug 2, 1993||Oct 11, 1994||Krenn Ronald J||Lighted serving tray|
|US5613751 *||Jun 27, 1995||Mar 25, 1997||Lumitex, Inc.||Light emitting panel assemblies|
|US5667289 *||Apr 7, 1992||Sep 16, 1997||Seiko Epson Corporation||Background lighting apparatus for liquid crystal display|
|US5746493 *||Mar 8, 1996||May 5, 1998||Ericsson Inc.||Light guide for a display or keyboard|
|US5876107 *||Jan 2, 1997||Mar 2, 1999||Lumitex, Inc.||Light emitting panel assemblies|
|US5895115 *||Jan 16, 1996||Apr 20, 1999||Lumitex, Inc.||Light emitting panel assemblies for use in automotive applications and the like|
|US5931555 *||Feb 3, 1997||Aug 3, 1999||Seiko Epson Corporation||Background lighting apparatus for liquid crystal display|
|US5949505 *||Aug 9, 1996||Sep 7, 1999||Seiko Epson Corporation||Surface-type illumination device and liquid crystal display|
|US5975711 *||Jun 9, 1997||Nov 2, 1999||Lumitex, Inc.||Integrated display panel assemblies|
|US6079838 *||Jan 2, 1997||Jun 27, 2000||Lumitex, Inc.||Light emitting panel assemblies|
|US6108060 *||May 28, 1999||Aug 22, 2000||Seiko Epson Corporation||Surface-type illumination device and liquid crystal display|
|US6134092 *||Apr 8, 1998||Oct 17, 2000||Teledyne Lighting And Display Products, Inc.||Illumination device for non-emissive displays|
|US6174065||Apr 5, 1999||Jan 16, 2001||Paul Schurch||Modular illuminated panel display system|
|US6540373 *||Mar 29, 2001||Apr 1, 2003||Bendrix L. Bailey||Lighting system|
|US6712481||Feb 23, 1999||Mar 30, 2004||Solid State Opto Limited||Light emitting panel assemblies|
|US6749312||Dec 20, 2002||Jun 15, 2004||Solid State Opto Limited||Light emitting panel assemblies|
|US6755547||Aug 30, 2002||Jun 29, 2004||Solid State Opto Limited||Light emitting panel assemblies|
|US6764196 *||Dec 13, 2002||Jul 20, 2004||Bendrix B. Bailey||Lighting system|
|US6886956||Nov 18, 2002||May 3, 2005||Solid State Opto Limited||Light emitting panel assemblies for use in automotive applications and the like|
|US6910783||Oct 4, 2002||Jun 28, 2005||Lumitex, Inc.||Transparent light emitting members and method of manufacture|
|US6965789||Nov 27, 2001||Nov 15, 2005||Vertu Limited||Portable communication device|
|US7004611||Oct 17, 2003||Feb 28, 2006||Solid State Opto Limited||Light emitting panel assemblies|
|US7006349||Dec 26, 2001||Feb 28, 2006||Vertu Limited||Casing|
|US7052074||Oct 3, 2003||May 30, 2006||All Sales Manufacturing, Inc.||Angularly adjustable illuminated spoiler|
|US7063375||Jul 12, 2005||Jun 20, 2006||All Sales Manufacturing, Inc.||Angularly adjustable illuminated spoiler|
|US7083317 *||Dec 29, 2003||Aug 1, 2006||Casio Computer Co., Ltd.||Surface-shaped light irradiation device|
|US7108414||Jun 23, 2003||Sep 19, 2006||Solid State Opto Limited||Light emitting panel assemblies|
|US7160015||Feb 23, 2004||Jan 9, 2007||Solid State Opto Limited||Light emitting panel assemblies|
|US7165873||May 20, 2005||Jan 23, 2007||Solid State Opto Limited||Light emitting panel assemblies|
|US7178965||Dec 16, 2004||Feb 20, 2007||Solid State Opto Limited||Light emitting panel assemblies having LEDs of multiple colors|
|US7195389||Jul 15, 2003||Mar 27, 2007||Solid State Opto Limited||Light emitting panel assemblies|
|US7226196||Dec 20, 2002||Jun 5, 2007||Solid State Opto Limited||Light emitting panel assemblies|
|US7300194||Oct 6, 2005||Nov 27, 2007||Solid State Opto Limited||Light emitting panel assemblies|
|US7322730||Aug 10, 2004||Jan 29, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7354184||May 20, 2005||Apr 8, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7357553||May 20, 2005||Apr 15, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7364341||Sep 30, 2004||Apr 29, 2008||Solid State Opto Limited||Light redirecting films including non-interlockable optical elements|
|US7367705||Nov 3, 2005||May 6, 2008||Solid State Opto Limited||Long curved wedges in an optical film|
|US7374305||May 20, 2005||May 20, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7374327||Mar 29, 2005||May 20, 2008||Schexnaider Craig J||Light panel illuminated by light emitting diodes|
|US7384177||Oct 6, 2005||Jun 10, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7404660||Jun 16, 2006||Jul 29, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7404661||Jan 25, 2007||Jul 29, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7434973||Feb 9, 2007||Oct 14, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7434974||Mar 20, 2006||Oct 14, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7448775||Jul 25, 2006||Nov 11, 2008||Solid State Opto Limited||Transreflectors, transreflector systems and displays and methods of making transreflectors|
|US7467887||Aug 15, 2006||Dec 23, 2008||Solid State Opto Limited||Light emitting panel assemblies|
|US7513672||Jun 30, 2008||Apr 7, 2009||Solid State Opto Limited||Light emitting panel assemblies|
|US7522943||Dec 21, 2001||Apr 21, 2009||Vertu Limited||Casing|
|US7524101||Jun 30, 2008||Apr 28, 2009||Solid State Opto Limited||Light emitting panel assemblies|
|US7537370||Oct 11, 2006||May 26, 2009||Solid State Opto Limited||Light emitting panel assemblies|
|US7540628 *||Oct 17, 2006||Jun 2, 2009||Novicomm, Inc.||Illuminated panels and methods therefor|
|US7563012||Jun 30, 2008||Jul 21, 2009||Solid State Opto Limited||Light emitting panel assemblies|
|US7575358 *||Jan 13, 2006||Aug 18, 2009||Minebea Co., Ltd.||Planar Illumination Device|
|US7703967||Aug 15, 2006||Apr 27, 2010||Rambus International Ltd.||Light emitting panel assemblies|
|US7712932||Feb 19, 2008||May 11, 2010||Rambus International Ltd.||Light redirecting films having optical elements with curved surfaces|
|US7736043||Oct 6, 2005||Jun 15, 2010||Rambus International Ltd.||Light emitting panel assemblies|
|US7780329||Apr 24, 2009||Aug 24, 2010||Rambus International Ltd.||Light emitting panel assemblies|
|US7798695||Nov 18, 2008||Sep 21, 2010||Rambus International Ltd.||Light emitting panel assemblies|
|US7963687||Mar 15, 2010||Jun 21, 2011||Rambus International Ltd.||Light emitting panel assemblies|
|US7976187 *||Mar 27, 2008||Jul 12, 2011||Cree, Inc.||Uniform intensity LED lighting system|
|US8047987||May 23, 2007||Nov 1, 2011||Invuity, Inc.||Blade insert illuminator|
|US8083389||Sep 15, 2008||Dec 27, 2011||Siemens Aktiengesellschaft||Medical examination apparatus|
|US8088066||Oct 24, 2007||Jan 3, 2012||Invuity, Inc.||Blade insert illuminator|
|US8104944||Aug 18, 2010||Jan 31, 2012||Rambus International Ltd.||Light emitting panel assemblies|
|US8123393||May 20, 2011||Feb 28, 2012||Rambus International Ltd.||Light emitting panel assemblies|
|US8142063||Nov 5, 2010||Mar 27, 2012||Rambus International Ltd.||Light emitting panel assemblies|
|US8157423||Feb 1, 2007||Apr 17, 2012||Siemens Aktiengesellschaft||Plate for inscription|
|US8215816||Dec 9, 2011||Jul 10, 2012||Rambus International Ltd.||Light emitting panel assemblies|
|US8308334||Dec 8, 2011||Nov 13, 2012||Rambus International Ltd.||Light emitting panel assemblies|
|US8322905||Dec 7, 2011||Dec 4, 2012||Rambus International Ltd.||Edgelit panel with curvilinear light extracting deformities|
|US8371734||Sep 17, 2010||Feb 12, 2013||Rogers Corporation||Front lit alterable display|
|US8398274||Mar 17, 2010||Mar 19, 2013||Rambus International Ltd.||Light redirecting films including intersecting optical elements with flat and curved surfaces|
|US8409088||Jan 17, 2007||Apr 2, 2013||Invuity, Inc.||Retractor illumination system|
|US8459858||Dec 7, 2011||Jun 11, 2013||Rambus Delaware Llc||Light emitting panel assemblies|
|US8462292||Jul 16, 2009||Jun 11, 2013||Rambus Delaware Llc||Optically transmissive substrates and light emitting assemblies and methods of making same, and methods of displaying images using the optically transmissive substrates and light emitting assemblies|
|US20110228536 *||Sep 29, 2009||Sep 22, 2011||Ledlitek Co., Ltd.||Lamp unit|
|EP0414366A2 *||Jul 12, 1990||Feb 27, 1991||Nokia Mobile Phones (U.K.) Limited||Light guide|
|EP1014402A1 *||Nov 26, 1999||Jun 28, 2000||Alcatel||Illumination system for keys and its application in portable telephones|
|EP2039296A2 *||Aug 27, 2008||Mar 25, 2009||Siemens Aktiengesellschaft||Illumination device for a medical inspection device|
|WO1991005202A1 *||Aug 22, 1990||Apr 3, 1991||Motorola Inc||Backlighting apparatus|
|WO1997033268A1 *||Mar 6, 1997||Sep 12, 1997||Ericsson Ge Mobile Inc||Light guide for a display or keyboard|
|WO2002054426A1 *||Dec 21, 2001||Jul 11, 2002||Hutchison Mark||A casing|
|WO2002054427A1 *||Dec 26, 2001||Jul 11, 2002||Hutchison Mark||A casing|
|WO2002054733A1 *||Dec 21, 2001||Jul 11, 2002||Michael Hague||A portable communication device|
|WO2002054736A1 *||Dec 26, 2001||Jul 11, 2002||Mark Hutchison||A portable communication device|
|WO2002079689A1 *||Jan 24, 2002||Oct 10, 2002||Bendrix L Bailey||Lighting system|
|WO2006043159A1 *||Oct 21, 2005||Apr 27, 2006||Medialavoro It S A S||Case for control keyboard|
|WO2007127325A2 *||Apr 24, 2007||Nov 8, 2007||George K Awai||Illuminated panels and methods therefor|
|WO2008092413A1 *||Feb 1, 2007||Aug 7, 2008||Siemens Ag||Plate for inscription|
| || |
|U.S. Classification||362/613, 362/249.4, 362/249.1|
|International Classification||F21V8/00, H05K1/18, G09F13/18, G01D11/28, B60Q3/04|
|Cooperative Classification||G01D11/28, G09F2013/1895, G09F2013/1831, G02B6/0021, H05K1/189, H01H2219/062, H01H2219/044, B60Q3/044|
|European Classification||B60Q3/04B, G01D11/28, G02B6/00L6I4S4|
|Feb 28, 1989||AS||Assignment|
Owner name: AG COMMUNICATION SYSTEMS CORPORATION, 2500 W. UTOP
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GTE COMMUNICATION SYSTEMS CORPORATION;REEL/FRAME:005060/0501
Effective date: 19881228