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WO1998037535A1 - Panneaux de signalisation a fibres optiques - Google Patents

Panneaux de signalisation a fibres optiques Download PDF

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Publication number
WO1998037535A1
WO1998037535A1 PCT/US1997/002592 US9702592W WO9837535A1 WO 1998037535 A1 WO1998037535 A1 WO 1998037535A1 US 9702592 W US9702592 W US 9702592W WO 9837535 A1 WO9837535 A1 WO 9837535A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
optic
recited
neck
sign
Prior art date
Application number
PCT/US1997/002592
Other languages
English (en)
Inventor
Song San Lee
Original Assignee
Fiber Does, Inc.
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 Fiber Does, Inc. filed Critical Fiber Does, Inc.
Priority to PCT/US1997/002592 priority Critical patent/WO1998037535A1/fr
Priority to AU21309/97A priority patent/AU2130997A/en
Publication of WO1998037535A1 publication Critical patent/WO1998037535A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/305—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being the ends of optical fibres

Definitions

  • the present invention relates to signs, in particular, to fiber-optic signs
  • a major objective of the present invention is to provide a fiber-optic sign that can uniformly render bright pattern or information
  • optical fibers Much modern technology is closely identified with the manufacturing and the applications of optical fibers
  • the critical feature of optical fibers is the transmission of light
  • the light When the light is traveling in an optical medium of refractive-index n, it strikes an interface with an optical medium of refractive-index n 2 , then the total reflection will occur in case of n, larger than n 2 and an incident angle (measured to the normal of the interface) larger than a critical angle of total reflection In such a fashion, light rays are repeatedly reflected within the optical medium of refractive-index n, in the direction of the transmission with little loss of light energy
  • optical fibers are information display in which bare optical fibers are employed Since an optical fiber possesses a refractive-index larger than that of air, light rays into one end of a bare optical fiber can be transmitted forward along the axis of the optical fiber and finally refracted into air at the other end of the optical fiber
  • optical fibers allow light from a light source to be transmitted to remote and spaced locations where the light rays may be emitted as either a point or line of illumination Because of this unique capability of light transmitting, optical fibers are used to create a variety of visual and ornamental displays
  • an optical element is used to mount each of optic fiber on the display panel
  • This optical element has a convex head and a cylindrical body with a dent at its tail end to hold the optic fiber
  • a clear transparent plastic plate has to be provided to sandwich the convex head between the display panel and the transparent plastic plate
  • the control circuit is composed of a battery, a switch circuit, an oscillatory circuit, and a light source
  • the house number panel comprises a front side bearing a house number, a plurality of through holes arranged along the border of the house number, and a back side fixed with a holder to hold a number of fiber-optic tubes
  • Each fiber-optic tube has one end fastened to one through hole on the house number panel and an opposite end abutted to the light source for transmitting the light of the light source to the house number
  • prior art suggested elements for retaining the optic fibers in position
  • these elements either did nothing help with or even weaken light- emitting capability of optic fibers, or required other parts assistant to keep them in position and to hold optic fibers
  • no prior art can provide custom-designed signs of an adjustable display area
  • prior art did not relate to a fiber-optic sign that can be visible in all-weather visible condition What is needed is a fiber-optic sign that can render an all-weather visible, uniform and bright information presentation with easy assembling and low costs
  • a plurality of couplers of unique design can improve the intensity of light rays rendered from each single optical fiber and resiliently retain them
  • Each display panel is designed to be easily coupled with the other one to form an adjustable display panel
  • a paint is applied to the display panel so that the fiber-optic signs in accordance with the present invention is visible in day time without the light source turned on
  • a fiber-optic sign includes a housing and a light control circuit
  • a plurality of optic fibers are next to the light control circuit for transmitting light
  • a display panel of a plurality of apertures is provided for mounting the optic fibers
  • a plurality of couplers are employed with each having a convex head and a body
  • the body has a first neck formed next to the convex head for providing a frictional engagement of each coupler and each aperture
  • the body may be cylindrical in shape
  • the body is tapered in shape so as to form a stopper next to the first neck to prevent the fiber-optic coupler from out off the aperture after it fits into the aperture
  • the cylindrical body may have a stopper projected from the body
  • the body has at least one first longitudinal slot and a longitudinal hole to resiliently hold an optic fiber
  • the longitudinal hole runs through the body and the first neck for accommodating the optic fiber
  • the body has a second slot
  • the first and second longitudinal slots meet at a right angle and run through the body and at least part of the first neck, so the body of the coupler is divided as four parts that resiliently retain the optic fiber when it is forcibly inserted into the hole
  • a second neck may be formed between the first neck and the convex head to allow the four parts for further flexibility to resiliently hold the optic fiber
  • the head of the fiber-optic coupler shapes like a convex since in accordance with the optics theory, the convex head helps light to be uniformly and maximally emitted Also, the convex head of the coupler increases the light-rendering diameter of the optic fiber, so the visible effect of the optic fiber is improved To provide information presentation of high resolution, a gap between each aperture is defined within a range of 0 2-1 5 inch As a result, fewer optic fibers can be used to provide a continuous information presentation without a significant discrete visible effect while cutting the workload in assembling
  • the diameter of the first neck is substantially same as that of each aperture so that the coupler in accordance with the present invention is frictionally engaged to the aperture
  • the convex head is designed larger than the first neck in diameter to retain the coupler in position and uniformly and maximally render light transmitted from the optic fiber, the stopper has a diameter larger than the first neck to hold the coupler in position once it fits into the corresponding aperture, and the first neck larger than the second
  • the longitudinal hole in accordance with the present invention is tapered in shape with a first end contacting with the convex head and a second end in which the first end is larger than the second end in diameter
  • the first end is designed slightly larger than the optic fiber in diameter and the second end is slightly smaller than the optic fiber in diameter
  • each aperture on the display panel has an aperture neck and an aperture body
  • the aperture neck frictionally engages to the first neck of the coupler and the aperture body accommodates the body of the coupler
  • the display panel has a first side of a pair of flanges and a second side of a projection
  • the pair of flanges define a channel
  • two or more display panels in accordance with the present invention may easily join together with the precision location by the engagement of the projection and channel Therefore, to construct a fiberoptic sign of larger display area, it simply needs to join two or more display panels together.
  • the apertures may be covered by a plurality of removable masks
  • the removable masks may be taken off with the couplers being inserted into them This design provides customers with much flexibility to customize a pattern as desired After a pattern is determined by customers, the masks are removed with the couplers being inserted into the masked apertures that define the pattern
  • the couplers in accordance with the present invention are made of transparent plastic materials
  • the transparent plastic materials include acrylic material
  • the acrylic material has a diffusion dye additive in it to help the convex head uniformly render the light from the optic fibers
  • the light control circuit includes a rechargeable battery, preferably, a nickel-cadmium battery, and at least one light-emitting diode
  • the nickel-cadmium battery converts energy collected by a solar panel into electrical and store it to supply power to the light-emitting diode as needed
  • a detect circuitry sensors light around the fiber- optic sign and when it is darker than a predetermined threshold, activates the nickel-cadmium battery to turn the light-emitting diode on
  • a paint may be applied to the areas that defines information or pattern to be presented Therefore, the fiber-optic signs in accordance with the present invention can be visible under all-weather condition
  • the paint that may be applied to the areas preferably includes vinyl, silkscreen, and enamel
  • the housing may be taken any of a number configurations, such as circular, oval, or muti-sided configurations may be utilized as desired
  • the present invention provides a fiber-optic sign of adjustable display area and bright light with low costs and simple assembling
  • the display panel of the fiber-optic signs has an angle from 0°-15° relative to the surface of the display panel so that the optic fibers on the display panel align with people's sign to provide good visible effects
  • FIGURE 1 is an illustrational view of a preferred embodiment of the fiber-optic sign in accordance with the present invention
  • FIGURE 2 is block diagrams of the light control circuit in accordance with the present invention.
  • FIGURE 3 is an illustrational view of a preferred embodiment of the fiber-optic coupler in accordance with the present invention.
  • FIGURE 4 is a back view along line A-A of the fiber-optic coupler of FIG 3 showing its construction
  • FIGURE 5 is an illustrational view of a preferred embodiment of the display panel in accordance with the present invention.
  • FIGURE 6 is an enlarged view of a part of the display panel of FIG 5,
  • FIGURE 7 is a cross-sectional view taken along line B-B of the display panel of FIG 5 showing its constructional details
  • FIGURE 8 is a perspective view of the fiber-optic sign in accordance with one preferred embodiment of the present invention.
  • FIGURE 9 is a cross-sectional view taken along line C-C of the fiber-optic sign of FIG 8 showing its constructional details
  • FIGURE 10 is a perspective view of another fiber-optic sign formed with three display panels of FIG 5 in which the display panels are of a plurality masked apertures
  • a fiber-optic sign 100 in accordance with the present invention includes a housing 102, a light control circuit 104, a plurality of optic fibers 106, and a plurality of fiber-optic couplers 108, as shown in FIG 1
  • housing 102 may be taken any of a number configurations As shown in the drawings, housing 102 is generally rectangular in shape However, circular, oval, or muti-sided configurations may be utilized as desired In particular, the housing 102 may be formed of plastic materials by plastic molding process or metal materials of good heat-conductive property, such as aluminum or steel
  • the housing 102 includes a front display panel 110 and a rear display panel 112 of a plurality of apertures 114, a top section 116, and a bottom section 118 Both top section 116 and bottom section 118 are generally formed with similar cross section and include a generally planar outer wall integrated and formed with a pair of outer flanges 120 and 122
  • the flange 120 is resilient and utilized to compress the display panels 110 and 112 against inwardly formed generally linear flange 124 and 126
  • the linear flanges 124 and 126 are spaced relative to the outer flanges 120 and 122 respectively in order to provide elongated channels 128 and 130 in which the edge portions of the panel members 110 and 112 may be selectively and slidingly received
  • a light control circuit 104 which typically includes a solar panel 132, a battery 134 for storing the energy collected by the solar panel 132, light-emitting diodes 136 that is connected to the battery 134, and a fiber-optic bundle holder 138
  • the optic fibers 106 receive light from the light-emitting diodes 136, transmit it to the other ends, and emits it to the air from the fiber-optic couplers 108 Consequently, a picture, design, or information that is patterned with the apertures 114 becomes visible
  • the optic fibers are commercially available from Mitsubishi Co
  • the light control circuit 104 is located inside of the housing 102, it may also be located outside of the housing 102 with one ends of the optic fibers 106 next to it
  • a fiber-optic bundle for receipt of light from each light-emittmg diode is of 50 optic fibers, to provide uniform light intensity in each single optic fiber
  • Block diagrams 200 of the light control circuit 104 are shown in FIG 2, which include a solar panel 202, a rechargeable battery 204, a voltage control circuit 206, light-emitting diode 208, and a photo sensor 201
  • the solar panel 202 collects the energy from sun so as to charge the rechargeable battery 204
  • Voltage circuit 206 is a rectifier to adjust the voltage of the rechargeable battery 204 to keep it at a stable level
  • the photo sensor 201 connected to one input of the voltage circuit 206 detects the light around the fiber-optic sign in accordance with the present invention and when it is darker than a predetermined threshold, photo sensor 201 is on so that the power supplied to light-emitting diode 208 is switched on, thereby activating the light-emitting diode 208 to light the optic fibers next to it
  • the fiber-optic coupler 108 in accordance with the present invention is shown in FIG 3, which is made from transparent plastic material, preferably acrylic To improve light-rendering effects, the acrylic material is mixed with a diffusion dye to change its optics property
  • the fiber-optic coupler 108 has a convex head 302, a body 304, a first neck 306, and a second neck 308 At the center of the body 304 is a hole 310 that runs through the body 304, the first neck 306, and the second neck 308
  • the hole 310 may be cylindrical in shape Preferably, it is tapered in shape with its diameter bigger as it is closer to the convex head 302
  • Two longitudinal slots 312 and 314 extend through the body 304 and stop at the end of the first neck 306
  • the two longitudinal slots 312 and 314 meet at a right angle to split the body of the fiber-optic coupler into four parts, as shown in FIG 4
  • each fiber-optic coupler 108 is first inserted into each aperture 114, and then, each single optic fiber is inserted into the tapered hole 310 To firmly retain each optic fiber 106 in position, it has to first mount the fiber-optic coupler 108 on the display panel 112 To facilitate to do it, a transition portion 316 is formed at the end of the fiber-optic coupler 108 On the other hand, to prevent the fiber-optic coupler 108 from out off the aperture 114, stopper 318 is formed next to the first neck 306 to retain the fiber-optic coupler 108 in position The convex head 302 and stopper 318 are larger than first neck 306 in diameter Since the first neck 306 is frictionally engaged to the aperture 114 of the display panel 112, the fiber-optic coupler 108 may be assured to be secured by the space defined with both convex head 302 and stopper 318 While the above preferred embodiments show a frictional engagement by the fiber-optic coupler 108 and the aperture 114, many other
  • the design of the fiber-optic coupler 108 is to allow each single optic fiber not only to be easily inserted, but also to be firmly held Accordingly, two longitudinal slots 312 and 314 are formed to allow the body 304 to resiliently hold each optic fiber, as shown in FIG 4 Furthermore, the formation of the second neck 308 allows the body 304 for further flexibility to provide resilient holding of the optic fiber 106
  • a tapered portion 320 is formed at the end of the body 304
  • the tapered hole 310 has its diameter slightly smaller than that of the optic fiber 106 at the end of body 304, but slightly larger than or the same as that of the optic fiber 106 at the end of the second neck 308
  • the diameter of the convex head 302 is about 0 200 inch
  • the diameter of the body 304 is about 0 140 inch
  • the diameter of the first neck 306 is about 0 146 inch for fitting into the aperture 114 of the diameter of about 0 150 inch
  • the diameter of the second neck 308 is about 0 125 inch
  • the tapered hole 310 to hold the optic fiber 106 of the diameter of about 0 028 inch has a diameter of about 0 030 inch at the biggest end and a diameter of about 0 021 inch at the smallest end
  • each of slots 312 and 314 is about 0 015 inch in width
  • the stopper 318 has a diameter of about 0 162 inch at its biggest end and a diameter of about 0 146 inch at its smallest end
  • FIG 4 is a back view along line A-A of the fiber-optic coupler 108 of FIG 3 to show its construction From FIG 4, it can be seen that the slots 312 and 314 meet at the right angle and extend the cross section of the fiber-optic coupler 108 to divide the body 304 into four parts to resiliently hold the optic fiber 106 inserted into the tapered hole 310
  • a display panel 500 is preferably made by plastic molding process and is square in shape, as shown in FIG 5 It has a body portion 512 on which a plurality of apertures 114 are formed, and four sides 514, 516, 518, and 520
  • the left side 514 is a pair of flanges extending outwardly from the body portion 512
  • the top side 516 has the similar construction as left side 514, the right side 518 and the bottom side 520 project from the body portion 512, as shown in FIG 7
  • At the center of each of the left side 514 and the top side 516 is of a location projection 522 or 524
  • at the center of each of the right side 518 and the bottom side 520 is of a location concavity 526 or 528 Accordingly, two or more display panels 500 can be combined to provide a larger and adjustable display area
  • FIG 6 An enlarged view of a part of the display panel 500 is shown in FIG 6 in which two kinds of apertures are shown One is masked aperture 602 that has an aperture mask 606 of four tabs 610 connected to the body portion 512 of the display panel 500 Another one is aperture 604 Depending on the requirements, the display panel 500 may be of only apertures 602 or 604, but not both For example, in case that users are not for sure what the pattern or information to be presented is exactly to be or they like to design a pattern by themselves, the display panel of masked apertures 602 may be chose Otherwise, the display panel of apertures 604 may be used With the mask 606 left, users may design any pattern or information to be presented on the display panel 500, and by taking off masks 606 with the insertion of the fiber-optic couplers 108, the pattern or information defined by those apertures is displayed with the optic fibers 106 It allows users for much flexibility to display the patterns or information they desire to present, thereby making a sign with capability of customer design Usually, the display panel of
  • FIG 7 A cross-sectional view taken along line B-B of the display panel 500 of FIG 5 is shown in FIG 7
  • the display panel 500 of apertures 702 is made from plastic, preferably acrylic material, by plastic molding process
  • Each aperture 702 has an aperture neck 704 to engage to the first neck of the fiber-optic coupler 306
  • An aperture body 706 is formed next to the aperture neck 704 for accommodating the body 304 and stopper 318, thereby retaining the optic fiber 106 in position
  • the height of the aperture body 706 is preferably about 0 140 inch and the height of the aperture neck 704 is about 0 060 inch
  • the left side 514 is of a pair of flanges 714 that define a channel 712 and the right side 518 is a projection
  • the thickness of projection 518 matches with that of the channel 712 so that the projection 518 may closely fit into the channel 712
  • the distance between two apertures is about 0 400 inch
  • Rectangle fiber-optic sign 800 is a street sign in which apertures defining the information "FIRST ST" are formed on the display panel 802
  • a solar panel 808 and a photo sensor 810 are mounted on the fiber-optic sign 800 In this case, the display panel
  • a paint may be applied to the areas 804 defined by those apertures 806 so that the information or pattern to be presented can be visible without the light control circuit turned on Therefore, the fiber-optic signs in accordance with the present invention can be used even in day time
  • the paint that may be applied to the areas 804 preferably includes vinyl, silkscreen, and enamel
  • FIGURE 9 is a cross-sectional view taken along line C-C of the display panel 802 of FIG 8
  • four plastic U rings 906, 908, 910, and 912 are applied to the top and bottom edges of the panel members so as to have them filled in the channels defined by each pair of flanges 914 and 916
  • the display panel of masked apertures is formed by plastic molding process, as shown in FIG 10 Similar to FIG 8, a solar panel 908 and a photo sensor 910 are mounted on the fiber-optic sign Users may design any pattern or information they like to present with removing masks from the masked apertures 902 For example, "FIRST ST" may be presented with the apertures 902 defining these characters inserted by fiber-optic couplers Since a few square display panels shown in FIG 5 may be combined to provide a big display area, users can decide what pattern or information is to be presented In this case, the display panel is constructed by combining three square display panels shown in FIG. 5 that are made from plastic material, preferably acrylic, by plastic molding process Consequently, users enjoy the flexibility for customer design Therefore, this flexibility plus the adjustable display area brings the fiber-optic signs in accordance with the present invention to a variety of applications
  • the fiber-optic sign shown in FIG 9 is similar to that shown in FIG 1 in construction or configuration, the only difference between them is the display panel member
  • the one shown in FIG 1 is made from plastic materials by plastic molding process and is constructed with the assembling three square display panels as shown in FIG 5, but the one shown in FIG.
  • the fiber-optic signs in accordance with the present invention can be applied for street signs and high-way signs
  • the existing street signs are not lighted so that they are hard to be read after dark by drivers and pedestrian who are not familiar with the area
  • power lines are indispensable, which brings up costs for building a high-way and also, have the potential dangerous for people and property
  • the display panel of the fiber-optic signs has an angle from 0°-15° relative to the surface of the display panel so that the optic fibers on the display panel align with people's sign, thereby providing preferred visible effects

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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)

Abstract

La présente invention concerne un panneau de signalisation à fibres optiques (100) qui comprend un boîtier (102), un circuit de commande de lumière (104), une pluralité de fibres optiques (106) placées à côté du circuit de commande de lumière pour transmettre la lumière, un panneau d'affichage (112, 500) présentant plusieurs ouvertures (114) destinées au montage des fibres optiques. Pour monter les fibres optiques sur le panneau d'affichage, on utilise plusieurs coupleurs (108) constitués d'un matériau acrylique comportant comme additif un colorant et présentant chacun au moins une tête convexe, un corps et un premier col. Le premier col est formé entre la tête convexe (302) et le corps (304) pour permettre un accouplement par friction entre les coupleurs et les ouvertures. Le corps présente deux fentes longitudinales (312, 314) qui se coupent en formant un angle droit, ainsi qu'un trou conique (310). Les fentes divisent le corps en quatre parties de façon à retenir élastiquement une fibre optique dans le trou conique. Un second col (308) est formé juste à côté de la tête convexe pour donner une souplesse élastique complémentaire au coupleur. Les coupleurs peuvent améliorer l'effet de rendu de lumière de fibres optiques et permettent un montage facile des fibres optiques à leur emplacement respectif. En outre, le panneau d'affichage est formé d'au moins un côté à rebord (518, 520) d'une partie concave (526, 528) et d'un côté récepteur (514, 516) d'une partie en saillie (522, 524), deux ou plusieurs panneaux pouvant ainsi être assemblés pour former une grande surface d'affichage.
PCT/US1997/002592 1997-02-21 1997-02-21 Panneaux de signalisation a fibres optiques WO1998037535A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1997/002592 WO1998037535A1 (fr) 1997-02-21 1997-02-21 Panneaux de signalisation a fibres optiques
AU21309/97A AU2130997A (en) 1997-02-21 1997-02-21 Fiber-optic signs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1997/002592 WO1998037535A1 (fr) 1997-02-21 1997-02-21 Panneaux de signalisation a fibres optiques

Publications (1)

Publication Number Publication Date
WO1998037535A1 true WO1998037535A1 (fr) 1998-08-27

Family

ID=22260395

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/002592 WO1998037535A1 (fr) 1997-02-21 1997-02-21 Panneaux de signalisation a fibres optiques

Country Status (2)

Country Link
AU (1) AU2130997A (fr)
WO (1) WO1998037535A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026080A1 (fr) * 1999-10-05 2001-04-12 Scandisign As Panneau eclaire
US6895705B2 (en) 2003-05-15 2005-05-24 Marketing Display, Inc. Light panel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814948A (en) * 1987-07-02 1989-03-21 Yasuo Hasegawa Light-emitting-end mounting mechanism in optical display panel
US4848017A (en) * 1987-08-07 1989-07-18 Bailey James M Illuminated building number assembly
US4917448A (en) * 1988-10-27 1990-04-17 Oppenheimer M David Lighted display device
US5303124A (en) * 1993-07-21 1994-04-12 Avi Wrobel Self-energizing LED lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814948A (en) * 1987-07-02 1989-03-21 Yasuo Hasegawa Light-emitting-end mounting mechanism in optical display panel
US4848017A (en) * 1987-08-07 1989-07-18 Bailey James M Illuminated building number assembly
US4917448A (en) * 1988-10-27 1990-04-17 Oppenheimer M David Lighted display device
US5303124A (en) * 1993-07-21 1994-04-12 Avi Wrobel Self-energizing LED lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026080A1 (fr) * 1999-10-05 2001-04-12 Scandisign As Panneau eclaire
US6895705B2 (en) 2003-05-15 2005-05-24 Marketing Display, Inc. Light panel

Also Published As

Publication number Publication date
AU2130997A (en) 1998-09-09

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