Display board illuminating device for passive displays
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United States of America Patent
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Dec 3, 1991
Grant Date -
N/A
app pub date -
Jul 30, 1990
filing date -
Aug 3, 1989
priority date (Note) -
Expired
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Abstract
A display board illuminating device includes a light guide plate arranged to face the back of a display board and a light source disposed to face the side end of the light guide plate. The side end of the light guide plate is inclined toward the center of the light guide plate in the direction of the display board. By this configuration an angle of an optical axis refracted at the surface of the side end and incident into the light guide plate with respect to a main surface of the light guide plate, so that the whole area of the display board is illuminated efficiently.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
| Patent Owner | Address | Total Patents |
|---|---|---|
| Pioneer Electronic Corporation | TOKYO | 574 |
International Classification(s)
Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Kayama, Tsutomu | Kawagoe, JP | 2 | 133 |
| Kitazawa, Hideki | Kawagoe, JP | 1 | 124 |
| Nagai, Yoshiaki | Kawagoe, JP | 7 | 339 |
| Takeuchi, Shogo | Kawagoe, JP | 3 | 155 |
| Tanimoto, Kohichi | Kawagoe, JP | 1 | 124 |
| Terada, Ryohei | Kawagoe, JP | 4 | 124 |
| Utsugi, Nobuo | Kawagoe, JP | 5 | 218 |
Cited Art Landscape
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| * 4874228 Back-lit display | 104 | 1989 | |
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| * 4890201 Light transmitting plate member | 44 | 1988 | |
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| * 4903171 Panel lighting | 6 | 1989 | |
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| * 4453220 Apparatus and methods for recording antimicrobic susceptibility data and biotype data | 8 | 1981 | |
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| * 4933814 Planar luminescent device | 113 | 1989 | |
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| * 4630895 LCD lightguide | 115 | 1985 | |
| * 4929062 Light guide for LCD | 43 | 1988 | |
* Cited By Examiner
Patent Citation Ranking
Forward Cite Landscape
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| * 5608550 Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector | 158 | 1996 | |
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| * 6288700 Light emitting flat panel device which uses light guide routes to directly send light into a matrix of electronic shutters | 30 | 1995 | |
| * 6928775 Multi-use electric tile modules | 44 | 2002 | |
| * 2004/0031,219 Multi-use electric tile modules | 11 | 2002 | |
| 6834987 Illuminated medallion for transmission shifter knobs | 8 | 2002 | |
| * 2005/0279,400 Electric tile modules | 12 | 2005 | |
| 7681363 Electric tile modules | 12 | 2006 | |
| 7854095 Electric tile modules | 10 | 2009 | |
| * 2009/0266,405 ELECTRIC TILE MODULES | 0 | 2009 | |
| * 2012/0074,873 PLANE-LIKE LIGHTING UNITS AND DISPLAY EQUIPMENT PROVIDED THEREWITH | 1 | 2011 | |
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| * 6089739 Surface light source device | 17 | 1998 | |
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| * 2003/0123,246 Light emitting panel assemblies | 54 | 2002 | |
| * 2005/0111,238 Light emitting panel assemblies | 48 | 2004 | |
| * 2005/0094,418 Light emitting panel assemblies | 48 | 2004 | |
| * 2006/0028,844 Light emitting panel assemblies | 54 | 2005 | |
| * 2006/0028,841 Light emitting panel assemblies | 49 | 2005 | |
| * 2007/0103,933 LIGHT EMITTING PANEL ASSEMBLIES | 1 | 2006 | |
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| 6496237 Light source utilizing diffusive reflective cavity having two oppositely inclined surfaces | 20 | 1999 | |
| 6313892 Light source utilizing reflective cavity having sloped side surfaces | 116 | 2001 | |
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| * 6883950 Plane-like lighting units and display equipment provided therewith | 13 | 2004 | |
| * 2004/0174,717 Plane-like lighting units and display equipmet provided therewith | 1 | 2004 | |
| 7784986 Plane-like lighting units and display equipment provided therewith | 5 | 2005 | |
| * 2005/0180,124 Plane-like lighting units and display equipment provided therewith | 10 | 2005 | |
| 8070344 Plane-like lighting units and display equipment provided therewith | 10 | 2010 | |
| 8177407 Plane-like lighting units and display equipment provided therewith | 0 | 2011 | |
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| * 7121692 Backlight module | 4 | 2003 | |
| * 2005/0002,205 BACKLIGHT MODULE | 2 | 2003 | |
| * 2005/0157,521 Backlight assembly for liquid crystal display | 5 | 2004 | |
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| * 5803357 Thermostat with remote temperature sensors and incorporating a measured temperature feature for averaging ambient temperatures at selected sensors | 147 | 1997 | |
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| 6574652 Intrinsically safe communication and control system for use in hazardous locations including monotoring device with intrinsically safe fluorescent tube backlit | 14 | 1998 | |
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| 6285425 Ridged reflector for an optical display having a curved and a planar facet for each ridge | 19 | 1998 | |
| 6285426 Ridged reflector having optically transmissive properties for an optical display device | 38 | 1998 | |
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| 7195389 Light emitting panel assemblies | 15 | 2003 | |
| * 2004/0012,946 Light emitting panel assemblies | 25 | 2003 | |
| 7434973 Light emitting panel assemblies | 11 | 2007 | |
| * 2007/0147,087 LIGHT EMITTING PANEL ASSEMBLIES | 22 | 2007 | |
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| * 7246932 Data display device | 19 | 2002 | |
| * 2004/0114,344 Data display device | 2 | 2004 | |
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| * 5969479 Light flashing system | 51 | 1998 | |
| 7067986 Frequency controlled lighting system | 5 | 2003 | |
| 7057354 Frequency controlled lighting system | 3 | 2004 | |
| 7207688 Interactive shoe light device | 12 | 2005 | |
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| * 5775791 Surface emission apparatus | 98 | 1995 | |
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| 6473554 Lighting apparatus having low profile | 182 | 1997 | |
| 6647199 Lighting apparatus having low profile | 81 | 1999 | |
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| * 7221353 Liquid crystal display device and method for operating the same | 1 | 2002 | |
| * 2003/0122,755 LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR OPERATING THE SAME | 0 | 2002 | |
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| * 6166787 Optical display device having prismatic film for enhanced viewing | 49 | 1998 | |
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| * 5655832 Multiple wavelength light processor | 168 | 1995 | |
| * 5806955 TIR lens for waveguide injection | 154 | 1995 | |
| * 6043591 Light source utilizing diffusive reflective cavity | 102 | 1997 | |
| * 5892325 Backlighting apparatus for uniformly illuminating a display panel | 94 | 1997 | |
| * 6134092 Illumination device for non-emissive displays | 44 | 1998 | |
| * 2014/0355,307 DISPLAY APPARATUS | 1 | 2014 | |
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| * 5499112 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 60 | 1994 | |
| 6512600 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 49 | 1997 | |
| * 5905583 Light guide illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 36 | 1997 | |
| 6426807 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 23 | 2000 | |
| 7593139 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 2 | 2006 | |
| * 2006/0119,899 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 3 | 2006 | |
| * 2009/0284,810 LIGHT GUIDE, ILLUMINATING DEVICE HAVING THE LIGHT GUIDE, AND IMAGE READING DEVICE AND INFORMATION PROCESSING APPARATUS HAVING THE ILLUMINATING DEVICE | 2 | 2009 | |
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| * 5537300 Control panel | 51 | 1995 | |
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| * 5418384 Light-source device including a linear array of LEDs | 91 | 1993 | |
| * 9804320 Illumination device with edge-lit light guide with opposed light sources | 0 | 2013 | |
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| * 5727866 Control panel | 85 | 1996 | |
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| * 2001/0033,480 LCD illuminating device | 3 | 2001 | |
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| * 7121708 Illuminated logo unit with light guide plate | 1 | 2004 | |
| * 2005/0007,751 Illuminated logo unit with light guide plate | 0 | 2004 | |
| * 9651732 Light source module | 0 | 2015 | |
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| * 8702295 Flat light source module | 1 | 2011 | |
| * 2012/0106,198 FLAT LIGHT SOURCE MODULE | 4 | 2011 | |
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| * 5477239 Front lighting system for liquid crystal display | 29 | 1993 | |
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| * 6007209 Light source for backlighting | 192 | 1997 | |
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| * 5988827 Display devices having rounded corner backlight unit | 36 | 1997 | |
| RE44227 Display devices having rounded corner backlight unit | 0 | 2001 | |
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| * 2009/0257,244 LIGHT EMITTING PANEL ASSEMBLIES | 2 | 2009 | |
| 8317368 Light redirecting films including intersecting optical elements with flat and curved surfaces | 0 | 2010 | |
| * 8142063 Light emitting panel assemblies | 1 | 2010 | |
| 8123393 Light emitting panel assemblies | 1 | 2011 | |
| 8322905 Edgelit panel with curvilinear light extracting deformities | 4 | 2011 | |
| 8308334 Light emitting panel assemblies | 0 | 2011 | |
| 8215816 Light emitting panel assemblies | 2 | 2011 | |
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| * 2011/0211,368 LIGHT GUIDE PLATE, WIRING MODULE AND ELECTRONIC APPLIANCE | 3 | 2009 | |
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| 7278766 LED based light guide for dual mode aircraft formation lighting | 4 | 2003 | |
| * 2004/0196,646 LED based light guide for dual mode aircraft formation lighting | 11 | 2003 | |
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| * 5381309 Backlit display with enhanced viewing properties | 121 | 1993 | |
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| * 5390085 Light diffuser for a liquid crystal display | 101 | 1993 | |
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| * 5485291 Uniformly thin, high efficiency large area lighting panel with two facet grooves that are spaced apart and have light source facing facets with smaller slopes than the facets facing away from the light source | 140 | 1994 | |
| * 5400224 Lighting panel | 43 | 1994 | |
| * 5664862 Edge light for panel display | 116 | 1996 | |
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| * 5677702 Display unit incorporating light guiding plate | 17 | 1994 | |
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| * 5584556 Surface light source device | 144 | 1992 | |
| * 5718497 Surface light source device | 64 | 1995 | |
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| 7057778 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 2 | 2002 | |
| * 2003/0076,551 Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device | 87 | 2002 | |
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| * 5613751 Light emitting panel assemblies | 234 | 1995 | |
| * 5895115 Light emitting panel assemblies for use in automotive applications and the like | 122 | 1996 | |
| * 6079838 Light emitting panel assemblies | 162 | 1997 | |
| * 5921652 Light emitting panel assemblies | 160 | 1997 | |
| * 5876107 Light emitting panel assemblies | 142 | 1997 | |
| 6712481 Light emitting panel assemblies | 130 | 1999 | |
| * 2002/0141,174 LIGHT EMITTING PANEL ASSEMBLIES | 29 | 1999 | |
| 6755547 Light emitting panel assemblies | 72 | 2002 | |
| * 2003/0007,344 Light emitting panel assemblies | 21 | 2002 | |
| 6886956 Light emitting panel assemblies for use in automotive applications and the like | 59 | 2002 | |
| * 2003/0095,398 Light emitting panel assemblies for use in automotive applications and the like | 18 | 2002 | |
| 7226196 Light emitting panel assemblies | 14 | 2002 | |
| 6749312 Light emitting panel assemblies | 60 | 2002 | |
| * 2003/0123,247 Light emitting panel assemblies | 18 | 2002 | |
| * 2003/0123,245 Light emitting panel assemblies | 44 | 2002 | |
| 7004611 Light emitting panel assemblies | 65 | 2003 | |
| * 2004/0080,927 Light emitting panel assemblies | 22 | 2003 | |
| * 6796668 Light emitting panel assemblies for use in automotive applications and the like | 52 | 2003 | |
| * 2004/0095,739 Light emitting panel assemblies for use in automotive applications and the like | 18 | 2003 | |
| 7160015 Light emitting panel assemblies | 29 | 2004 | |
| * 2004/0165,372 Light emitting panel assemblies | 26 | 2004 | |
| 7322730 Light emitting panel assemblies | 6 | 2004 | |
| * 2005/0007,759 Light emitting panel assemblies | 31 | 2004 | |
| 7364341 Light redirecting films including non-interlockable optical elements | 25 | 2004 | |
| * 2005/0122,591 Light redirecting films and film systems | 38 | 2004 | |
| 7178965 Light emitting panel assemblies having LEDs of multiple colors | 15 | 2004 | |
| * 2005/0111,241 Light emitting panel assemblies | 27 | 2004 | |
| 7374305 Light emitting panel assemblies | 12 | 2005 | |
| 7357553 Light emitting panel assemblies | 7 | 2005 | |
| 7165873 Light emitting panel assemblies | 13 | 2005 | |
| 7736043 Light emitting panel assemblies | 7 | 2005 | |
| 7384177 Light emitting panel assemblies | 14 | 2005 | |
| 7300194 Light emitting panel assemblies | 6 | 2005 | |
| * 2006/0028,840 Light emitting panel assemblies | 48 | 2005 | |
| * 2006/0028,843 Light emitting panel assemblies | 26 | 2005 | |
| * 2006/0028,817 Light emitting panel assemblies | 35 | 2005 | |
| 7367705 Long curved wedges in an optical film | 11 | 2005 | |
| 7434974 Light emitting panel assemblies | 13 | 2006 | |
| 7404660 Light emitting panel assemblies | 27 | 2006 | |
| 7448775 Transreflectors, transreflector systems and displays and methods of making transreflectors | 8 | 2006 | |
| 7703967 Light emitting panel assemblies | 20 | 2006 | |
| 7467887 Light emitting panel assemblies | 14 | 2006 | |
| * 2006/0274,554 Light emitting panel assemblies | 2 | 2006 | |
| * 2006/0274,555 Light emitting panel assemblies | 2 | 2006 | |
| 7537370 Light emitting panel assemblies | 5 | 2006 | |
| * 2007/0153,549 LIGHT EMITTING PANEL ASSEMBLIES | 9 | 2006 | |
| 7404661 Light emitting panel assemblies | 5 | 2007 | |
| * 2007/0133,224 LIGHT EMITTING PANEL ASSEMBLIES | 5 | 2007 | |
| 7712932 Light redirecting films having optical elements with curved surfaces | 11 | 2008 | |
| * 2008/0138,024 LIGHT REDIRECTING FILMS AND FILM SYSTEMS | 3 | 2008 | |
| 7563012 Light emitting panel assemblies | 8 | 2008 | |
| 7798695 Light emitting panel assemblies | 19 | 2008 | |
| * 7806539 Transreflectors, transreflector systems and displays and methods of making transreflectors | 3 | 2009 | |
| * 2009/0161,385 TRANSREFLECTORS, TRANSREFLECTOR SYSTEMS AND DISPLAYS AND METHODS OF MAKING TRANSREFLECTORS | 32 | 2009 | |
| 7963687 Light emitting panel assemblies | 5 | 2010 | |
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| * 5975711 Integrated display panel assemblies | 150 | 1997 | |
| * 7108414 Light emitting panel assemblies | 35 | 2003 | |
| 7354184 Light emitting panel assemblies | 11 | 2005 | |
| 7524101 Light emitting panel assemblies | 9 | 2008 | |
| 7513672 Light emitting panel assemblies | 21 | 2008 | |
| 7780329 Light emitting panel assemblies | 18 | 2009 | |
| 8462292 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 | 2 | 2009 | |
| 8398274 Light redirecting films including intersecting optical elements with flat and curved surfaces | 1 | 2010 | |
| * 8104944 Light emitting panel assemblies | 1 | 2010 | |
| 8459858 Light emitting panel assemblies | 0 | 2011 | |
| 8770814 Light emitting panel assemblies | 1 | 2013 | |
| 9625633 Light emitting panel assemblies | 0 | 2014 | |
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| * 5951152 Light source housing apparatus and method of manufacture | 9 | 1997 | |
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| 6238076 Compact light mixing and diffusing apparatus | 39 | 1999 | |
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| * 7690831 Surface light source device | 7 | 2005 | |
| * 2006/0007,704 Surface light source device | 7 | 2005 | |
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| * 6259082 Image reading apparatus | 58 | 1998 | |
| * 7419274 Optical conduction unit and image reader using the same | 1 | 2003 | |
| * 2006/0050,390 Optical conduction unit and image reader using the same | 5 | 2003 | |
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| * 5590945 Illuminated line of light using point light source | 111 | 1995 | |
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| * 7857504 Crystal display shielded by one or more protective guards | 0 | 2008 | |
| * 2009/0185,304 Crystal Display Shielded by One or More Protective Guards | 1 | 2008 | |
| 8087820 Crystal display shielded by one or more protective guards | 0 | 2010 | |
| * 2011/0058,457 Crystal Display Shielded By One Or More Protective Guards | 0 | 2010 | |
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| * 6108479 Optical waveguide plate for display | 8 | 1998 | |
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| * 6132053 Optimized highly efficient large area modular flat panel display lighting device | 12 | 1998 | |
* Cited By Examiner
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text
US Patent No: 5070431
Display board illuminating device for passive displays
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