US1724243A - Sign - Google Patents

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US1724243A
US1724243A US180735A US18073527A US1724243A US 1724243 A US1724243 A US 1724243A US 180735 A US180735 A US 180735A US 18073527 A US18073527 A US 18073527A US 1724243 A US1724243 A US 1724243A
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Prior art keywords
sign
casing
panels
panel
light
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US180735A
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Claude S Willey
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Individual
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising

Definitions

  • the subject matter of this invention is a sign, and more particularly a sign of the type adapted to be illuminated, either the whole of the time it is in use or only a part of the time, as dictated by the requirements of particular conditions.
  • Fig. 1 is a PGYSPGCtlVG view of one form. of the sign structure made in, accordance with the invention.
  • Fig. 2 is a top view with the top closure ren'iovod and looking into the sign structure.
  • Fig. 3 a sectionaljview on line 3-43 of Fig. 1.
  • Fig. 4 is a perspective view of the cover for the sign.
  • Fig. 5 a plan view of a different sort of a sign.
  • Fig. (3 is a sectional View taken through a structure showing a slightly different arrangement from that shown in Fig. 3.
  • Figs. 7 and 8 are perspective views of different reflectors for use with different sorts of si ns.
  • the sign shown in the drawings is of the type for interior use; that is, use within other buildings, theaters, and the like.
  • the body of the sign is made up of a framework or casing, which includes a top molding 1, end panels 2, and a bottom 3.
  • a removable cover 4 closes the upper end of the molding, and the cover may be provided with a suitable opening and bushing for the passageway therethrough. of a cable 5 for conducting an electric current.
  • the cover may be also provided with openings 6, :in order to permit circulation of air so as to prevent overheating of the device from the heat generated by an electric light.
  • the molding is adapted to provide a light compartment. As shown .in Fig.
  • the cover is provided with a bracket 7 positioned ad jaceut the bushing through which the cable passes, and this bracket is designed to hold a socket (not shown) which in turn holds a light bulb 8.
  • a light bulb of considerable length so as to extend well along the length. of the sign.
  • the cover is also provided with a reflector 9 which, as shown in Fig. 3, lies imn'iediately above the light bulb. The reflector may be soldered to the cover.
  • the framework of the sign structure thus described is designed to receive and hold a sign panel 10 which may be of glass provided with the desired. indicia which may be put .in the glass by a sand blasting process.
  • a second panel 11 (l? 8) may be carried by the frame, and where desirable this panel may include sign matter, or .it may be left blank with no indicia thereon. This, of course, depends upon requirements of the particular installation.
  • the sign casing and at the bottom thereof is a reflector and holding device 15, and as will be noted by referenct-i to Fig. 2, this device runs substantially the entire length of the iasiug and is just enough slmrter than the casing to permit it to be easily inserted.
  • This member is made of relatively thin sheet metal. and may be advantageously shaped as shown in the drawing. This member may be tinned or simi larly treated so as to have at least one side thereof of a light reflecting nature, thus 7 similar material to the member 15.
  • a reflector and holding device 18 which is constructed in a manner similar, and of These members thus provide reflecting surfaces 19 and 20 at each end of the casing.
  • these members Preferably, these members have their ends turned over as at 9.1, so as to lie in behind the ends of the panels and 11 so that theyare securely held in place.
  • a strip of angle material 22 is placed along the upper edge of each panel. These strips are disposed so that their end parts lie between the panels,
  • angle members project outwardly far enough to overlie the adjacent shoulder of the sign molding, as shown at 23, thus closing the crack between the panels and the sign frame to keep the elements, dirt, and dust from entering into the sign and light compartment.
  • the sign frame and its cover and the glass panels are made up separately.
  • the bottom member 15 the end members 18, and the angle members 22, all of which are easily produced by stamping or rolling the sheet metal.
  • the bottom member may first be put into place, and then the two panels, whereupon the end holders and reflectors may be inserted between the panels.
  • the angle members may be positioned along'the upper edges of the panels.
  • the bottom and end and reflectors are made of metal possessing some spring qualities, and they are designed to press outwardly against the panels thus to hold the panels tightly against the adjacent frame members.
  • the panels are held securely in place and prevented from moving or rattling within the casing.
  • the angle strips act as reinforcements so that the upper edge of the panels are held outwardly against the frame.
  • the reflector Q is secured to the top in such a way as to provide spaces between the reflector and the top, and the holes 6 in the top communicate with these spaces.
  • the arrangement is such as to prevent any light from shining upward out through the holes which would be undesirable and destroy the niccty ol the sign.
  • dust which may enter the holes will, in the main, settle on the back ol" the reflector and will not pass into the main interior of the sign.
  • Fig. a slightly modified form is shown, and in this form the top molding is rounded outwardly as at and the edge of the molding material is turned upwardly at 231.
  • securing strips 32 which are U-shaped in cross section, may be used.
  • the interior of the sign structure is otherwise the same as the form shown in Fig. l. and the assembling is the same.
  • the U-shaped strips soeurely fix the upper edges of the panels to the inti'irned edges 31 ot the frame structure and also form a very ellicient dust prool' joint. It is noticeable that the removing oil the interior parts of the sign structure is as easy as its assembly.
  • the sign frame may be made up along standard lines and any sort o'l'i a sign panel can be used. If at any time a particular sign has been used, and it is desired to change the indicin, the panels and the reflectors may be taken out and the sign may be reassembled with new panels, all. of which is a vcry simple operation and speedily accompl shed.
  • Figs. 7 and S reflector members of difl crent shapes will be seen.
  • the reflector member is provided with a relatively sharp angle Z33 thus providing reflecting surfaces 34!: which 'are at a greater angle than the type (it the reflector shown in Fig. 8.
  • Fig. 3 has a sign including one word as shown in Fig. 1.
  • the structure of Fig. 6 as a side panel correspomling to that shown in Fig. 5.
  • oi reflectors to properly position bright spots or to eliminate bright spots where necessary is especially desirable.
  • the panel as a whole is not opaque, as for instance the glass having a red tint and designed to permit the passage of a certain amount of light through all portions of the u (Al panel.
  • the bright spots or bright portions appear through the red glass.
  • the reflector in Fig. 8 has a curved reflecting surface 85.
  • This retlector has re fleeting surfaces which are not so abrupt as the form shown in Fig. and is especially adapted for use with. light tinted. yntnels so that an even distribution ot light is thrown over the panel so as to give the panel a uniform appearance.
  • the sign shown an d described is one which may carry indicia visible :troin. opposite sides. Sometimes it may be desirable or necessary to have the indicia visible from. but one side only, in which case the panel 11 need not be of glass, and may, indeed, be
  • a sign structure comprising a casing including a light compartment disposed at one edge oi. the casing, a panel provided with indicia and ar ranged to fit against the casing to close one side of the casing so that light :liroinv the said compartment illuminates the indieia on the inside of the casing, sheet metal. members arranged around the three other edges of the casing, said sheet metal members being shaped. so as to act as re .tlectors and being arranged to hold the said panel in position within the casing, and an angle member arranged. so that one oil.
  • a sign structure comprising a casing with open sides, a pair of panels relatively loosely titted within the casing for closii'ig these sides, separate metal members disposed lwtween the panels and along three edges Oil? the casing and adapted to hold the two panels separated and to urge then'i outwardly in tight engagement with. the casing, and angle members overlying the upper edges of the panel members and also overlying the adjacent part oi. the casing and having parts disposed between the panels and said metal members so as to bridge the abutting portions Oil the panel. members and the casing.
  • a sign structure comprising a casing having open sides, panels with indicia thereon for closing the sides, a light compartment along one edge oil.
  • the casing illuminating the space between the panels, means disposed along three edges of the panels normally urging the panels apart and pressing them tightly aga.- rat the casing, said means being in the form of reflectors, all of the said means and the panels being independent of the casing and held therein by the spring action of the said means and readily ren'iorable therefrom whereby to readily permit a change in the panels to change the indicia and change in the reticetors corresponding to the change of indicia, some of said means being otless length than the adjacent side oil the casing so as to substantially abut against another oi. said means.
  • a sign structure com1. n:ising a casi: 5;; having open sides, panels carrying indicia :tor closing the sides, means for holding the panels separated and against the sides of the casing, said casing having a moulding along one edge which forms a light compartment, reflectors along the other three sides, said moulding having a wall which joins with the casing which extends perpendicular to the casing, and means held in place by some of the reflectors covering the top of each panel and the said adjacent wall of the moulding to close the crack between the panels and the casing and prevent entrance of foreign matter in the casing and moulding.
  • a sign structure comprising a casing having open sides, panels carrying indicia for closing the sides, means for holding the panels separated and against the sides of the casing, said casing having a moulding along one edge which forms a light compartment, said moulding having a wall which joins with the casing which extends perpendicular to the casing, and means held in. place by some of the panel holding means, covering the top Of each panel and the said. adjacent wall of the moulding to close the crack between the panels and the casing and prevent entrance o'l foreign matter in. the casing and moulding, said panels, means for holding the panels, and the angular memhere being independent of the casing and readily removable to permit of change in the panels to vary the indicia.
  • a sign structure comprising a sign casing adapted to be illuminated from within for illuminating a translucent panel.
  • the sign casing which carries sign matter, means providing a light compartment along the upper edge of the casing, a removable cover tor closing the light compartment, a light source carried by the removable cover with the center line of the light source positioned substantially on the center line of the cover whereby the light source is positioned to project light into the casing, a reflector arcuate in cross section and secured substain llO tially on its center line to substantially the around the reflector and through the apercenter line of the cover with its edges spaced tures for Ventilating purposes and to prefrom the cover, said cover, light source and vent the passage of light through said aperrefiector being removable as a unlt from sald tures.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Description

Aug. 13, 1929. c. s. WlLLEY SIGN Filed April 1927 2 Sheets-Sheet 1 INVENTOR. (24w: .1 M14: Y
A TTORNEY.
1929- c. s. WILLEY 1,724,243
SIGN
Filed April 1927 I 2 Sheets-Shed 2 INVENTOR. (2405 0. J/MALY A TTORNEY.
Patented Aug. 13,1929.
UhllTEi) STATES CLAUDE S. WILLEY, OF DETROIT, MICHIGANQ SIGN.
Application filed April 4, 192?.
The subject matter of this invention is a sign, and more particularly a sign of the type adapted to be illuminated, either the whole of the time it is in use or only a part of the time, as dictated by the requirements of particular conditions.
It is the aim of the invention to produce a sign wherein the source of light, which may be disposed along one edge of the sign, is reflected at the sides of the sign in a manner to effect an even or uniform illiunination of the sign. In other words, it is the aim to produce a sign which will not show bright spots or dark spots as a result of nearness or remoteness from the light source. it is a further object of the invention to provide such a sign which can be +asily and economic: lly maluifactured and assembled, wherein aminiu'uun number of parts are used and wherein some of the parts function in a dual manner, as for instance, a part which functions both as a reflector and as a meml'ier for assisting in holding the several parts of the sign assembled. A further feature of this invention is the manner in which the sign structure is constructed, and the several parts assembled so that all of the joints are tight fitting and dust proof. Notwithstanding this arrangement, however, the invention contemplates provision for circulation of air so that heat generated by the light source may be dissipated.
In the accompanying drawings, a satisfactory form of the invention is shown:
Fig. 1 is a PGYSPGCtlVG view of one form. of the sign structure made in, accordance with the invention.
Fig. 2 is a top view with the top closure ren'iovod and looking into the sign structure.
Fig. 3 a sectionaljview on line 3-43 of Fig. 1.
Fig. 4 is a perspective view of the cover for the sign.
Fig. 5 a plan view of a different sort of a sign.
Fig. (3 is a sectional View taken through a structure showing a slightly different arrangement from that shown in Fig. 3.
Figs. 7 and 8 are perspective views of different reflectors for use with different sorts of si ns.
Serial No. 180,735.
The sign shown in the drawings is of the type for interior use; that is, use within other buildings, theaters, and the like. The body of the sign is made up of a framework or casing, which includes a top molding 1, end panels 2, and a bottom 3. A removable cover 4; closes the upper end of the molding, and the cover may be provided with a suitable opening and bushing for the passageway therethrough. of a cable 5 for conducting an electric current. The cover may be also provided with openings 6, :in order to permit circulation of air so as to prevent overheating of the device from the heat generated by an electric light. The molding is adapted to provide a light compartment. As shown .in Fig. 4-, the cover is provided with a bracket 7 positioned ad jaceut the bushing through which the cable passes, and this bracket is designed to hold a socket (not shown) which in turn holds a light bulb 8. In practice, it has been found satisfactory to use a light bulb of considerable length so as to extend well along the length. of the sign. The cover is also provided with a reflector 9 which, as shown in Fig. 3, lies imn'iediately above the light bulb. The reflector may be soldered to the cover.
The framework of the sign structure thus described is designed to receive and hold a sign panel 10 which may be of glass provided with the desired. indicia which may be put .in the glass by a sand blasting process. A second panel 11 (l? 8) may be carried by the frame, and where desirable this panel may include sign matter, or .it may be left blank with no indicia thereon. This, of course, depends upon requirements of the particular installation.
lVithin the sign casing and at the bottom thereof is a reflector and holding device 15, and as will be noted by referenct-i to Fig. 2, this device runs substantially the entire length of the iasiug and is just enough slmrter than the casing to permit it to be easily inserted. This member is made of relatively thin sheet metal. and may be advantageously shaped as shown in the drawing. This member may be tinned or simi larly treated so as to have at least one side thereof of a light reflecting nature, thus 7 similar material to the member 15.
is a reflector and holding device 18, which is constructed in a manner similar, and of These members thus provide reflecting surfaces 19 and 20 at each end of the casing. Preferably, these members have their ends turned over as at 9.1, so as to lie in behind the ends of the panels and 11 so that theyare securely held in place. A strip of angle material 22 is placed along the upper edge of each panel. These strips are disposed so that their end parts lie between the panels,
and the end members 18. Also, these angle members project outwardly far enough to overlie the adjacent shoulder of the sign molding, as shown at 23, thus closing the crack between the panels and the sign frame to keep the elements, dirt, and dust from entering into the sign and light compartment.
In producing the device it will be understood that the sign frame and its cover and the glass panels are made up separately. In addition to these pieces, it is necessary only to make up the bottom member 15, the end members 18, and the angle members 22, all of which are easily produced by stamping or rolling the sheet metal. In assembling the sign structure the bottom member may first be put into place, and then the two panels, whereupon the end holders and reflectors may be inserted between the panels. Then the angle members may be positioned along'the upper edges of the panels. The bottom and end and reflectors are made of metal possessing some spring qualities, and they are designed to press outwardly against the panels thus to hold the panels tightly against the adjacent frame members. Thus, the panels are held securely in place and prevented from moving or rattling within the casing. Moreover, the angle strips act as reinforcements so that the upper edge of the panels are held outwardly against the frame.
By reference to Fig. 3 it will be noted that the covertor the sign sets tightly within the molding and rests upon a horizontal shoulder in the molding. This cover makes a nice fit in the molding and prevents the entrance of dust. It will be noted that the side panels are held snugly against the frame structure on all four sides. The angle strips and the out turned edges of the reflectors cooperating to make dust tight joints all around. 7
By again referring to Fig. 3 it will be noted that the reflector Q is secured to the top in such a way as to provide spaces between the reflector and the top, and the holes 6 in the top communicate with these spaces. Thus while air circulation ispermitted between the reflector and the top and let out through the holes, yet the arrangement is such as to prevent any light from shining upward out through the holes which would be undesirable and destroy the niccty ol the sign. Likewise, dust which may enter the holes will, in the main, settle on the back ol" the reflector and will not pass into the main interior of the sign.
In Fig. (i a slightly modified form is shown, and in this form the top molding is rounded outwardly as at and the edge of the molding material is turned upwardly at 231. lVith this type of molding, securing strips 32 which are U-shaped in cross section, may be used. The interior of the sign structure is otherwise the same as the form shown in Fig. l. and the assembling is the same. However, the U-shaped strips soeurely fix the upper edges of the panels to the inti'irned edges 31 ot the frame structure and also form a very ellicient dust prool' joint. It is noticeable that the removing oil the interior parts of the sign structure is as easy as its assembly. Accordingly, the sign frame may be made up along standard lines and any sort o'l'i a sign panel can be used. If at any time a particular sign has been used, and it is desired to change the indicin, the panels and the reflectors may be taken out and the sign may be reassembled with new panels, all. of which is a vcry simple operation and speedily accompl shed.
By reference to Figs. 7 and S reflector members of difl crent shapes will be seen. In Fig. 7 the reflector member is provided with a relatively sharp angle Z33 thus providing reflecting surfaces 34!: which 'are at a greater angle than the type (it the reflector shown in Fig. 8. In the. use of the difl'crcnt reflectors, assume that Fig. 3 has a sign including one word as shown in Fig. 1. Here it is desirable to have the greatest illumination along the center of the panel to illuminate theindicia and the reflectors shaped as shown in. Fig. 3 do this nicely. Again assume that the structure of Fig. 6 as a side panel correspomling to that shown in Fig. 5. Here we have two words one arranged above the other and by using the bottom reflcctor as shown in llig. 7 a bright spot, so to speak, is thrown on the lower word Room. The upper reflector in the coycr is arranged correspomlingly to illuminate tho. upper word Check. The reflectors are interehangeablc so that the proper light ell ect can be had tor any type ol. sign panel.
The use oi reflectors to properly position bright spots or to eliminate bright spots where necessary is especially desirable. where the panel as a whole is not opaque, as for instance the glass having a red tint and designed to permit the passage of a certain amount of light through all portions of the u (Al panel. The bright spots or bright portions, appear through the red glass.
The reflector in Fig. 8 has a curved reflecting surface 85. This retlector has re fleeting surfaces which are not so abrupt as the form shown in Fig. and is especially adapted for use with. light tinted. yntnels so that an even distribution ot light is thrown over the panel so as to give the panel a uniform appearance.
It will be noted that all of the interior pieces of this sign are made up of sheet metal pieces which are so arranged as to act as reflectors and holders with a glass panel, and that allthe parts including the glass anels are held securely within the sign casing without involving any soldering, weld.- ing, or similar operations.
The sign shown an d described is one which may carry indicia visible :troin. opposite sides. Sometimes it may be desirable or necessary to have the indicia visible from. but one side only, in which case the panel 11 need not be of glass, and may, indeed, be
of metal embodied directly into the sigi'i casing.
Claims:
1. A sign structure, comprising a casing including a light compartment disposed at one edge oi. the casing, a panel provided with indicia and ar ranged to fit against the casing to close one side of the casing so that light :liroinv the said compartment illuminates the indieia on the inside of the casing, sheet metal. members arranged around the three other edges of the casing, said sheet metal members being shaped. so as to act as re .tlectors and being arranged to hold the said panel in position within the casing, and an angle member arranged. so that one oil. its sides overlies the top of the panel and a part of the casing forming a wall of the light compartment to overlie the abutting portion ct said panel and the said wall, said angle member ove lapping some of the sheet metal membea's and held in place thereby.
2. A sign structure, comprising a casing with open sides, a pair of panels relatively loosely titted within the casing for closii'ig these sides, separate metal members disposed lwtween the panels and along three edges Oil? the casing and adapted to hold the two panels separated and to urge then'i outwardly in tight engagement with. the casing, and angle members overlying the upper edges of the panel members and also overlying the adjacent part oi. the casing and having parts disposed between the panels and said metal members so as to bridge the abutting portions Oil the panel. members and the casing.
23. A sign structure comprising a casing having open sides, panels with indicia thereon for closing the sides, a light compartment along one edge oil. the casing illuminating the space between the panels, means disposed along three edges of the panels normally urging the panels apart and pressing them tightly aga.- rat the casing, said means being in the form of reflectors, all of the said means and the panels being independent of the casing and held therein by the spring action of the said means and readily ren'iorable therefrom whereby to readily permit a change in the panels to change the indicia and change in the reticetors corresponding to the change of indicia, some of said means being otless length than the adjacent side oil the casing so as to substantially abut against another oi. said means.
4t. A sign structure com1. n:ising a casi: 5;; having open sides, panels carrying indicia :tor closing the sides, means for holding the panels separated and against the sides of the casing, said casing having a moulding along one edge which forms a light compartment, reflectors along the other three sides, said moulding having a wall which joins with the casing which extends perpendicular to the casing, and means held in place by some of the reflectors covering the top of each panel and the said adjacent wall of the moulding to close the crack between the panels and the casing and prevent entrance of foreign matter in the casing and moulding.
5. A sign structure comprising a casing having open sides, panels carrying indicia for closing the sides, means for holding the panels separated and against the sides of the casing, said casing having a moulding along one edge which forms a light compartment, said moulding having a wall which joins with the casing which extends perpendicular to the casing, and means held in. place by some of the panel holding means, covering the top Of each panel and the said. adjacent wall of the moulding to close the crack between the panels and the casing and prevent entrance o'l foreign matter in. the casing and moulding, said panels, means for holding the panels, and the angular memhere being independent of the casing and readily removable to permit of change in the panels to vary the indicia.
G. A sign structure comprising a sign casing adapted to be illuminated from within for illuminating a translucent panel. in the sign casing which carries sign matter, means providing a light compartment along the upper edge of the casing, a removable cover tor closing the light compartment, a light source carried by the removable cover with the center line of the light source positioned substantially on the center line of the cover whereby the light source is positioned to project light into the casing, a reflector arcuate in cross section and secured substain llO tially on its center line to substantially the around the reflector and through the apercenter line of the cover with its edges spaced tures for Ventilating purposes and to prefrom the cover, said cover, light source and vent the passage of light through said aperrefiector being removable as a unlt from sald tures.
5 casing, said cover having ventilator aper- In testimony whereof I allix my signatures therein positioned off its center line ture. and Within the depending edges of the reflector whereby to permit passage of air CLAUDE S. VVILLEY.
US180735A 1927-04-04 1927-04-04 Sign Expired - Lifetime US1724243A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646637A (en) * 1950-01-26 1953-07-28 Richard N Nierenberg Device for trans-illuminating transparencies
US3931689A (en) * 1974-06-12 1976-01-13 Dual-Lite Company Illuminated sign housing construction
US4024658A (en) * 1974-08-12 1977-05-24 Eugen Hoerner Three dimensional character
US4561203A (en) * 1983-08-04 1985-12-31 Dual-Lite Manufacturing Opaque sign plaque with dual reflector illumination
US5388357A (en) * 1993-04-08 1995-02-14 Computer Power Inc. Kit using led units for retrofitting illuminated signs
US5729924A (en) * 1996-03-25 1998-03-24 Reading; Charles J. Illuminating sign assembly
US6240665B1 (en) * 1999-01-05 2001-06-05 Jji Lighting Group, Inc. Illuminated sign
FR2808578A1 (en) * 2000-05-05 2001-11-09 Cooper Menvier Sa Emergency lighting unit with sign markings and having optimized light flux, uses lamps along top edge of lighting unit that overhang the face panel of the unit to provide general lighting and to illuminate front panel
EP2779146A3 (en) * 2005-10-11 2015-01-21 Koninklijke Philips N.V. Display device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646637A (en) * 1950-01-26 1953-07-28 Richard N Nierenberg Device for trans-illuminating transparencies
US3931689A (en) * 1974-06-12 1976-01-13 Dual-Lite Company Illuminated sign housing construction
US4024658A (en) * 1974-08-12 1977-05-24 Eugen Hoerner Three dimensional character
US4561203A (en) * 1983-08-04 1985-12-31 Dual-Lite Manufacturing Opaque sign plaque with dual reflector illumination
US5388357A (en) * 1993-04-08 1995-02-14 Computer Power Inc. Kit using led units for retrofitting illuminated signs
US5729924A (en) * 1996-03-25 1998-03-24 Reading; Charles J. Illuminating sign assembly
US6240665B1 (en) * 1999-01-05 2001-06-05 Jji Lighting Group, Inc. Illuminated sign
FR2808578A1 (en) * 2000-05-05 2001-11-09 Cooper Menvier Sa Emergency lighting unit with sign markings and having optimized light flux, uses lamps along top edge of lighting unit that overhang the face panel of the unit to provide general lighting and to illuminate front panel
EP2779146A3 (en) * 2005-10-11 2015-01-21 Koninklijke Philips N.V. Display device
EP1938298B2 (en) 2005-10-11 2019-03-20 Koninklijke Philips N.V. Display device

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