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WO1997036132A1 - Dispositif d'eclairage de faible puissance - Google Patents

Dispositif d'eclairage de faible puissance Download PDF

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Publication number
WO1997036132A1
WO1997036132A1 PCT/US1997/004792 US9704792W WO9736132A1 WO 1997036132 A1 WO1997036132 A1 WO 1997036132A1 US 9704792 W US9704792 W US 9704792W WO 9736132 A1 WO9736132 A1 WO 9736132A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
lamps
lighting display
electroluminescent
light
Prior art date
Application number
PCT/US1997/004792
Other languages
English (en)
Inventor
Dana Bruce
Bobby G. Pryor
Original Assignee
Dana Bruce
Pryor Bobby G
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 Dana Bruce, Pryor Bobby G filed Critical Dana Bruce
Publication of WO1997036132A1 publication Critical patent/WO1997036132A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • F21S9/032—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit being separate from the lighting unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]

Definitions

  • the present invention relates to lighting displays that utilize extremely low amounts of power and can be powered by other than mains electricity or conventional generators.
  • Such situations include the provision of exterior lighting displays for homes during the winter holiday season and stand-alone lighting needs, such as signs and decorations, at remote locations.
  • a major problem associated with presently available displays is that they require large amounts of electric power and so have to be connected to the main AC electric supply for the house. This typically requires the use of numerous electric connection leads that, in use, extend across the grounds of the house and which carry significant levels of electric current and have to be connected to an
  • the present invention provides, in one aspect, a lighting display comprising a plurality of light emitting devices constructed or adapted to consume low power and a source of stored electrical power sufficient to power said light emitting devices for a substantial period of time.
  • the light emitting devices desirably each requires less than about 10 mA (milliamp) current for operation.
  • the light emitting device is an electroluminescent device with a power consumption of less than about 0.1 watts per square inch of light emitting surface.
  • the invention may further include apparatus for recharging the source of stored electrical power.
  • the light emitting devices are connected in parallel across the electrical power source.
  • the light emitting devices are constructed to consume relatively low power, such as LED devices, gas discharge devices, including neon and fluorescent tubes, or electro-luminescent devices ("EL" devices), or light pipe sources.
  • LED devices such as LED devices, gas discharge devices, including neon and fluorescent tubes, or electro-luminescent devices ("EL" devices), or light pipe sources.
  • EL devices electro-luminescent devices
  • incandescent bulbs may be used, typically miniature bulbs with a power requirement of about 0.5 watts per bulb, in combination with a power saving device such as a switch control providing flicker, wave, flash or light frequency on/off (pulse width modulation) operation of the bulbs.
  • the apparatus for recharging the electrical power source may include a solar panel and/or a wind driven propeller to obtain energy from the environment.
  • the recharging apparatus can be connected to the electrical power source, although located remotely from the electrical power source, so that the electrical power source does not have to be removed from its location for recharging to
  • the invention may further provide an adjustable timing device to pre-set the times at which the- light emitting devices are operating.
  • an electrical sensor may be provided to turn on the display at dusk, in which case a timing device would turn off the display after a set period of
  • the electrical power source may be a battery, such as a nickel hydride, nickel cadmium or
  • the individual components of the lighting display namely the light emitting devices, the source of electrical power and the recharging apparatus may be separate units that can be electrically interconnected, so that the light emitting devices can be placed at a desired location, such as on a hedge, while the electrical power source is placed on the ground and the recharging apparatus on a roof or other higher and exposed structure.
  • the electrical power source and the recharging device can be incorporated in a single housing to reduce cost, but at the expense of reduced operating flexibility.
  • the electrical power source includes a plug-in charger so that the source can be recharged from a household 120V AC current supply. This has the advantage of allowing unlimited recharging energy, but requires the source to be removable to the supply or that a lead be extended from a main power outlet to the charger of the source.
  • An important advantage of the invention is that the lights can be operated off batteries for extended periods with no charging required. Due to the low current draw of the EL technology, barriers present in other systems can be overcome. Operation for up to four days is possible with the current battery being used and no charging.
  • a lantern battery would be an economical means of power for a stand alone system. The system would be used until the battery needs recharging, then the battery could be charged indoors (or replaced) using an AC charger while a fresh battery is installed in the light string.
  • the present invention also provides a novel lighting system employing electrc-luminescent lamps connected in parallel.
  • the EL lamps can be provided with connecting plugs enabling them to be mounted in the receptacles of conventional incandescent light strings.
  • the invention provides for a novel construction in which the EL lamps and the associated electrical connectors between them are protected by laminated layers of clear plastic, or by being housed within plastic tube, sealed its ends to protect the lamps.
  • the EL lamps can be operated directly off 120V AC with a reduction in brightness and longevity of the lamps (life is still excellent). No inverters or additional components are required for this type of operation. A circuit could be incorporated to change the operating frequency of the lights to increase the brightness level if desired.
  • the reduced power levels required by EL lamps allows multiple light strings to be connected end to end, thus helping to eliminate overloading of household electric circuits and the associated fire hazard and reducing the size of the wiring required for safe operation of a light string.
  • a display made up of a large number of EL lamps in multiple light strings connected end to end enables all the lights to be controlled together. This allows for very large displays with the light operation synchronized (i.e., one light controller switching all the lights on and off at the same time).
  • An ornament or bulb replacement can be made that plugs into existing AC light strings.
  • the ornament could be clear with a shape inside it, etc. Alternatively, an entire string of ornaments can be made.
  • FIG. 1 is a schematic illustration of an ornamental out-door light set embodying the invention
  • Figures 2a to 2f illustrate various light shapes that can be used in the light set
  • Figures 3a to 3c illustrate various lenses that can be used in the light set of Fig. 1
  • Figure 4 shows an alternative light set in which the lights are configured to convey a message.
  • Figure 5 shows a schematic for a further decorative lighting system embodying the invention.
  • Figure 6 and 7 show further alternative forms of a light set embodying the invention.
  • Figure 8 shows an alternative method of providing a light set embodying the invention.
  • Figure 9 illustrates a method of manufacturing an electro-luminescent light for use in the present invention. DETAH ED DESCRD7TION OF THE DRAWINGS
  • a plurality of light emitting devices 11 are connected in parallel by electrical connectors 13, 15 across a battery 17.
  • the light emitting devices 11 are electro-luminescent lamps ("ELs") and are manufactured in different colors, e.g., blue, white, red, green and yellow.
  • An EL as will be appreciated by those skilled in the art, is a light emitting capacitor, for example, of phosphor and barium titanate, sandwiches between two electrodes and subjected to alternating current. Application of the current creates a potential between front and rear electrodes of the EL which causes the phosphor to fluoresce, giving off the light.
  • ELs are produced by a number of companies, such as ELTech of Austin, Texas.
  • the green EL by ELTech, has a power consumption of approximately 40 mW/sq. in. (milliwatts per square inch) inch and a capacitance of 5 nF/square inch (nanofarads per square inch).
  • an inverter/controller 21 Between the battery 17 and the ELs 11 is connected an inverter/controller 21.
  • the inverter may be a compensating inverter to ensure constant brightness as the ELs age.
  • the EL's require less than about 10 mA each when operating and have a power consumption of less than about 0.1 watt per square inch of light emitting surface.
  • the battery 17 is, for example, a nickel hydride battery.
  • the battery 17 is connected to a recharging device, in this case, an array of solar cells 23, such as the SPC-4 battery changer or the PP16000 Power Pak by Solar World.
  • the solar cells 23 are disposed in a position to receive solar energy and may be movably mounted with a turning device that maintains the cells 23 in alignment with incident solar radiation. If necessary, because of the nature of the battery cells, a
  • charging controller 25 is provided to prevent prolonged supply of electric power from the cells 23 to
  • the battery 17 from harming the battery 17 by overcharging it.
  • available solar charging devices can provide an output between about 6.0 to 12.0 volts.
  • the amount of solar cell surface area is the main factor in deteirnining the power output of the solar cell. They can range from small units which provide less than 0.1W all the way up to large units which are made up of many cells and provide thousands of watts.
  • the controller portion of the inverter/ controller 21 provides the required
  • a light sensor 27 that switches on the ELs 11 at dusk.
  • a timer 29 can be associated with the sensor 27 to turn off the ELs
  • the ELs 11 are connected to the inverter/controller by detachable connector 31. It will be appreciated that the ELs 11 are connected to the inverter/controller by detachable connector 31. It will be
  • the ELs come in a variety of basic shapes as illustrated in Figures 2a to 2f .
  • the ELs come in a variety of basic shapes as illustrated in Figures 2a to 2f .
  • the ELs come in a variety of basic shapes as illustrated in Figures 2a to 2f .
  • the ELs come in a variety of basic shapes as illustrated in Figures 2a to 2f .
  • the ELs come in a variety of basic shapes as illustrated in Figures 2a to 2f .
  • the EL can be single-sided 11a, double-sided lib, or even circular shaped l ie.
  • the ELs can even be fancifully shaped for the holidays.
  • the ELs can be the shape of a star lid, Christmas tree lie, or a candy-cane lif.
  • the ELs can be shaped as letters llg, as shown in Figure 4.
  • each may be provided with a device for adjusting the viewing angle.
  • Figure 3b illustrates the use of a simple hemispherical lens to improve
  • the low power light system shown therein comprises a lighting controller 111 which controls a plurality of electro-luminescent lights 112.
  • the lights 112 are powered by a battery 113, which can be recharged by means of a solar cell 100.
  • the controller 111 can perform specialized light control functions, such as flashing, fade in/fade out, wave mode etc.
  • the controller 111 includes a PIC16C711 eight bit micro-controller IC 114 mounted on a printed circuit board.
  • the controller 111 is fully digital and can be programmed to provide a wide variety of operation modes.
  • Analog input channels 115 of the micro-controller IC 114 are connected to monitor the voltage of the battery 113 and adjustment potentiometers 116.
  • a quartz crystal 117 is connected to the micro-controller IC 114 to generate a time base and produce a stable frequency for timer operations.
  • a voltage regulator 118 is connected to regulate the voltage from the battery 113 to the micro ⁇ controller IC 114 to limit the battery voltage to the range of safe operation of the microprocessor IC 114.
  • a logic controlled, mosfet transistor 119 is used to switch an AC inverter 120 on and off to control the lights 112.
  • the mosfet transistor 119 has low internal resistance when on and can be controlled by logic levels.
  • the size of the inverter 127 is chosen to match the particular load being driven.
  • a plurality of switches are connected to the inputs of the micro-controller IC 114 to set the operational mode for the system.
  • a duty cycle switch 122 on the PCB sets the duty cycle, that is the percentage of time on to time off, of the lights 112.
  • a potentiometer 121 controls the flash rate of the lights 112 when flash mode is selected by the duty cycle switch 122.
  • Switch 123 is left as a spare to enter the run time or run mode of the lights.
  • Switches 124 are spare inputs that can be used for optional switches, or to connect other controllers for synchronization of several light sets or to sense and respond to an external event, such as a door opening, motion in the area of the light display, etc.
  • Switch 125 is used to reset the micro-controller IC 114 and to start a timer in 126.
  • the micro-controller IC 114 is used to switch a transformer to produce AC current and obviating the need for the separate inverter 120.
  • 1FP5106-97C and IFP5106-97A are suitable for use in the lighting systems of the present invention.
  • the voltage of the battery 113 is monitored by a voltage monitor IC 128. If the voltage of the battery 113 drops below a certain preset level, the lights 112 are switched off to avoid depletion of the battery 113 below the level at which the micro-processor IC 114 would stop functioning, thus losing the timing data stored in the micro-processor 114.
  • one of the analog inputs of the micro-controller IC 114 performs the monitoring function, thus obviating the need for the separate voltage monitor IC 128.
  • the battery 113 is charged by means of the solar cell 100 which is connected directly to the battery 113 through a diode 130.
  • the diode 130 prevents current from the battery 113 discharging back into the solar cell 100 when the lights are not lit. The maximum current output from the solar cell 100 will not damage the battery 113, so no sophisticated charge circuitry is needed.
  • the battery 113 is a sealed lead acid, 6.0 volt, 3.2 Ah (amp hours) battery, for example, the battery sold as Panasonic LC-R063R2PU, which has extemal dimensions of 2.6 in. x 1.3 in. x 4.92 in.
  • the solar cell 100 is a 2.5 W, 6.0 volt cell, such as the cell sold by Sun Wize Energy Systems, Inc. as Part #10026.6 or the cell sold by Energy Photovoltaics as Part #EPV 2.5/6Vv. Software
  • the lights 112 will operate for four hours in whatever mode is selected by the duty cycle switch 122.
  • the lights can be steady, or several different flash duty cycles can be selected by operation of the duty cycle switch 122.
  • the lights 112 will turn off.
  • Variations to the software can be made to enable the system to produce effects similar to those produced by light controllers currently on the market and even some features not presently available.
  • the controller 114 can be programmed to operate the lights 112 in a fade in/fade out mode where they gradually dim, then get brighter.
  • the software can provide a mode in which the lights 112 change operation modes (flashing rate and duration, steady, wave, etc.) at predefined intervals from seconds to hours, thus allowing the mode of the light operation to change during the four hour operating cycle.
  • a mode can be incorporated using the controller 114 so that if the voltage of the battery 113 drops below a certain threshold, the lights 112 go into flash mode to conserve battery power. This would allow the lights 112 to operate the full four hours in situations where the battery 113 is not sufficiently charged to run on steady continuous operation.
  • the number of switches can be decreased by having a push button that causes the controller
  • One of the additional inputs of the micro controller 114 can be used to synchronize operation with an extemal event such as a door closing, audio input, etc. With additional hardware, the controller can be made to play music at various intervals.
  • the lights 112 use electro-luminescent technology, which has significant advantages compared with the incandescent lights commonly used today.
  • EL technology requires from 1/10 (small incandescent lights) to 1/100 (full size incandescent lights) of the power used by conventional lights.
  • the EL lights can be cut to specific shapes, laminated, and constructed in a variety of formats not previously possible.
  • Durability - EL lamps are inherently more durable than the incandescent lamps currently used. They are less vibration sensitive than incandescent since there are no fragile filaments that can be easily damaged.
  • Luminescence - The EL lamps used are configured to deliver approximately 15 ft.- lumens of light for the best viewability versus power consumed ratio.
  • Figure 6 shows circular lamps 131 forming a light string 112 connected on a modified version of the leads commonly used for incandescent Christmas lights.
  • the lamps 131 are formed from the commercially available EL lamps sold as #12094-N Circular lights by MetroMark LEI.
  • the lamps 131 have 0.44 in. diameter lighted area and 0.54 in. diameter including the edge seal area. Pairs of one-sided circular lights are mounted back-to-back with their light emitting sides outward to provide light on both sides and a total light area of 30.5 sq. in.
  • the two lights are secured together by, for example, adhesive and their edges are sealed by, for example, dipping in conformed acrylic material, or by tape, to protect the lamp from moisture.
  • the edges are also covered with an electrically insulating material to reduce the risk of electric shock from the lights.
  • the current draw is about 157 mA at 6.0 volts.
  • the lamps 131 are blue, green and blended white, and colored overlays are used to produce green, yellow, orange and red lamp colors.
  • electroluminescent material is cut to shape and modified to fit an existing incandescent light string.
  • the electroluminescent material is Eltech Nova II Prototype 2 in. by 3 in. lights.
  • the total lighted surface area is 15 sq. in. and the current draw is about 130 mA at 6.0 volts.
  • Color combinations are obtained by using blue, blue-green and white lamps with colored overlays.
  • Figure 7 illustrates a light string comprising a plurality of rectangular electroluminescent lamps 132 wired in parallel mounted in clear plastic tubing 133.
  • the lamps 132 are formed from commercially available EL lamps sold as #12095-N rectangular light by MetroMack.
  • the lamps 132 have 0.3 in. by 0.5 in. lighted area and 0.4 in. by 0.6 in. including the edge seal area.
  • the current draw is about 142 mA at 6.0 volts.
  • the same color options can be obtained as for the light string described with respect to Figure 6.
  • the lamps 132 are mounted within a clear tube 133 of polyurethane or polypropylene material, the diameter of which is about 5/8 in.
  • the lamps 132 are retained in position in the tube 133 by end plugs 151.
  • Electric leads 152 for supplying electric power to the lamps 132 extend through a passage 153 in one of the end plugs 151 and terminate externally in a plug, not shown.
  • the electroluminescent light string shown in Fig. 7 that is contained in tubing 133 which is sealed at its ends has the advantage of protecting the electroluminescent lamps from both moisture and contact damage and eliminating any wiring tangles when storing or working with the light string.
  • the light string shown in Fig. 7 can be constructed as follows: 1. Produce individual electroluminescent lamps 132 of the desired shape, wire the individual lamps together and insert the assembly into clear plastic tubing 133.
  • Altemative forms of the light string shown in Figure 7 can be constructed as follows: a. Produce the electroluminescent light portions and their connecting wiring, ink, etc. on one continuous flexible substrate. This substrate can then be inserted into plastic tubing. b. Produce the electro-luminescent light portions and their connecting wiring, ink, etc. as a separate layer. Then encapsulate or laminate on both sides of the light layer using a flexible transparent material such as polycarbonate, or urethane material to form a flexible tape. This flexible tape can then be inserted into plastic tubing.
  • Figure 8 illustrates an altemative method of constructing the light string 112. As seen in
  • EL lamps 135 are made in a tape format, with the electroluminescent material sandwiched between two transparent layers of flexible plastic material 137, such as polycarbonate, Aclar, or polyester based film. Electrically conductive ink, wire, or flexible copper conduction 136 provides electric power to the lamps 135 via conventional electric wiring and a plug.
  • a laminated form of the electroluminescent light string such as that shown in Fig. 8 lends itself well to volume production techniques. This method of production results in a flexible laminated tape version of the electroluminescent light strings.
  • the electroluminescent lamps are protected from both moisture and most contact damage, and the possibility of wiring tangles when storing, or working with, the light string is eliminated.
  • Lamination can be achieved by:
  • Lamps 131 for use with the light string shown in Figure 6 can be constructed using a clam ⁇ shell design shown in Figure 9.
  • a lamp 131 comprises a piece of electroluminescent material 136 of circular configuration having a stem 137 formed with two holes 138 for attachment of wire leads 139.
  • the EL material 136 is disposed in a housing 140 of
  • transparent plastic material composed of two complementary halves 141 and 142 which have passages for accommodating the wire leads 139 and which can be secured together by, for example, adhesive, heat, or ultrasonic bonding to provide an enclosure for the lamp 136.
  • the assembly of lamp 136, housing 140 and leads 139 can be mounted in an insert plug 141 which is connected to electrical leads,
  • the insert plug 141 can be made to capture and make electrical contact with the base of the electroluminescent light and then insert or screw into the type of sockets being used on existing light strings.
  • the electroluminescent lamp is encapsulated and further
  • the mating piece can completely contain the electroluminescent light and snap together
  • This encapsulating piece contains the coloration required to obtain the light colors, thus eliminating the need for color overlays in the light manufacturing process.
  • This encapsulating piece is also configured to seal moisture away from the electroluminescent light.
  • the durability and long life characteristics of electroluminescent lights also make possible an additional configuration for the more typical type of light string.
  • the electrical leads of the electroluminescent light are directly connected to the wiring of the light string and the connection encapsulated in a permanently formed plastic moulding that protects the leads and connection from, for example, water. This eliminates the socket that is typically found on the light strings in existence today. This arrangement eliminates the ability to replace individual light units.
  • the durability and long life characteristics of electroluminescent lights make the replacement of lights

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Un dispositif d'éclairage ne faisant pas appel au courant secteur comprend plusieurs lampes électroluminescentes branchées en parallèle, une batterie rechargeable (17) étant reliée aux lampes (11) en passant par un onduleur (21). Un panneau solaire (23) recharge la batterie (17). On réalise des lampes électroluminescentes (131) à utiliser dans une guirlande lumineuse en découpant des formes décoratives (11a-11f) dans un matériau électroluminescent existant, qu'on monte dos à dos dans des réceptacles reliés à des fils électriques, comme dans le cas d'une guirlande lumineuse traditionnelle (112). Pour mieux protéger les lampes (132, 135) et en faciliter l'emploi, on peut les monter à l'intérieur d'une longueur de tube de plastique transparent (133) ou les intégrer dans des couches de plastique stratifié (137).
PCT/US1997/004792 1996-03-26 1997-03-26 Dispositif d'eclairage de faible puissance WO1997036132A1 (fr)

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US62211196A 1996-03-26 1996-03-26
US08/622,111 1996-03-26

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001013038A1 (fr) * 1999-08-14 2001-02-22 Kevin Carl Patrick Foulsham Appareil alimente par l'energie solaire
CN100429456C (zh) * 2005-12-31 2008-10-29 刘奕文 吊饰灯
WO2010003124A1 (fr) * 2008-07-02 2010-01-07 Laurence Mackler Ensemble de génération d’énergie solaire et son procédé de fourniture
USD751976S1 (en) 2013-08-05 2016-03-22 Sunpower Corporation Solar power generation assembly
USD754064S1 (en) 2013-08-05 2016-04-19 Sunpower Corporation Solar power generation assembly
USD774450S1 (en) 2013-08-05 2016-12-20 Sunpower Corporation Photovoltaic sundial assembly
USD819137S1 (en) 2013-08-05 2018-05-29 Sunpower Corporation Column cover

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US4138620A (en) * 1978-03-24 1979-02-06 Minnesota Mining And Manufacturing Company Multi-panel electroluminescent light assembly
US4376145A (en) * 1980-12-22 1983-03-08 W. H. Brady Co. Electroluminescent display
US5253150A (en) * 1992-07-01 1993-10-12 Vanni Robert R Warning light
US5469342A (en) * 1994-01-25 1995-11-21 Chien; Tseng L. Light-strip apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138620A (en) * 1978-03-24 1979-02-06 Minnesota Mining And Manufacturing Company Multi-panel electroluminescent light assembly
US4376145A (en) * 1980-12-22 1983-03-08 W. H. Brady Co. Electroluminescent display
US5253150A (en) * 1992-07-01 1993-10-12 Vanni Robert R Warning light
US5469342A (en) * 1994-01-25 1995-11-21 Chien; Tseng L. Light-strip apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001013038A1 (fr) * 1999-08-14 2001-02-22 Kevin Carl Patrick Foulsham Appareil alimente par l'energie solaire
CN100429456C (zh) * 2005-12-31 2008-10-29 刘奕文 吊饰灯
WO2010003124A1 (fr) * 2008-07-02 2010-01-07 Laurence Mackler Ensemble de génération d’énergie solaire et son procédé de fourniture
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USD1043549S1 (en) 2008-07-02 2024-09-24 Totalenergies Onetech Solar canopy
USD751976S1 (en) 2013-08-05 2016-03-22 Sunpower Corporation Solar power generation assembly
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