EP1173048A1 - Elektrolumineszierende Beleuchtungsvorrichtung - Google Patents

Elektrolumineszierende Beleuchtungsvorrichtung Download PDF

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Publication number
EP1173048A1
EP1173048A1 EP00305844A EP00305844A EP1173048A1 EP 1173048 A1 EP1173048 A1 EP 1173048A1 EP 00305844 A EP00305844 A EP 00305844A EP 00305844 A EP00305844 A EP 00305844A EP 1173048 A1 EP1173048 A1 EP 1173048A1
Authority
EP
European Patent Office
Prior art keywords
electroluminescent
lighting device
body part
inner body
contact
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP00305844A
Other languages
English (en)
French (fr)
Inventor
Luk Wah Jackson Chu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ewig Industries Co Ltd
Ewig Ind Co Ltd
Original Assignee
Ewig Industries Co Ltd
Ewig Ind Co Ltd
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 Ewig Industries Co Ltd, Ewig Ind Co Ltd filed Critical Ewig Industries Co Ltd
Priority to EP00305844A priority Critical patent/EP1173048A1/de
Publication of EP1173048A1 publication Critical patent/EP1173048A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode

Definitions

  • the present invention relates to an electroluminescent lighting device that is elongate and flexible for various lighting purposes.
  • Electroluminescent lighting devices have been known in general, which typically have a multi-layer structure including, for example, an indium tin oxide layer deposited on a substrate. This may be covered by a layer containing phosphorus or similar material. An additional dielectric layer may overlie the phosphorus layer, which is typically a barium titanium oxide layer such as barium titanate.
  • the structure may further include a conductive layer of silver ink, carbon or the like for the conduction of electrical current and, finally, an insulating transparent or translucent outermost plastic layer or the like for protection.
  • the layers including the indium tin oxide and silver ink or carbon layers
  • the layers including the indium tin oxide and silver ink or carbon layers
  • the released light can be emitted through surrounding layers to provide light from the devices as a whole.
  • the invention seeks to mitigate or to at least alleviate such problems by providing an improved electroluminescent lighting device.
  • an electroluminescent lighting device comprising a elongate flexible body having an inner part and an outer part, said outer part being of a transparent or translucent material, a elongate multi-layer electroluminescent element including a pair of co-extending conductive regions and extending along the inner body part, a pair of elongate conductors extending along the inner body part for supplying electrical power to the electroluminescent element, said conductors being separated from the electroluminescent element by at least a portion of the inner body part, and a plurality of metal contact elements located at intervals along the inner body part for electrically connecting the conductive regions of the electroluminescent element to the conductors, each said contact element having a first part in contact with a respective said conductive region and a second part penetrating through the said portion of the inner body part to come into contact with a respective said conductor.
  • the electroluminescent element is supported by the inner body part.
  • the inner body part is formed with a channel holding the electroluminescent element therein.
  • the channel has an open side having a reduced width which is smaller than the width of the electroluminescent element.
  • the electroluminescent element has a flat cross-section and opposite edges, along which edges the conductive regions extend respectively in a continuous manner.
  • the conductors are embedded within the inner body part.
  • the conductors are provided by respective stranded metal wires.
  • each contact element is in the form of a flat surface, against which a said respective contact region lies.
  • each contact element includes a portion overlying the flat surface to form a gap therebetween holding a said respective contact region in place.
  • each contact element is sharp and pierces through the said portion of the inner body part to come into contact with a respective said conductor.
  • each contact element also penetrates through a respective said conductor.
  • each contact element has a elongate body having opposite ends which are bent to form the second part.
  • the outer body part is extruded onto the inner body part to form the complete electroluminescent lighting device.
  • an electroluminescent lighting device or light 10 embodying the invention which light 10 is of an indefinite length and has a elongate flexible body 20 made of a transparent or translucent material such as plastic including polyvinyl chloride in particular.
  • the body 20 is manufactured initially as an extruded inner base strip 30 ( Figure 3) which is finally enclosed by an outer sheath 40 of the same or like material extruded thereon for protection ( Figure 6).
  • the base strip 30 has a generally flat rectangular channel shaped cross-section consisting of a lower part 31 and an upper part 32, in which upper part 32 a channel 33 is formed.
  • the upper part 32 includes a pair of co-extending horizontal integral flanges 34 on opposite sides of the channel 33, which lie on the same plane parallel to and immediately above the channel 33.
  • the flanges 34 extend laterally over part of the opposite sides of the channel 33, thereby reducing the width of the channel open side and forming a pair of opposed side grooves 35 facing each other.
  • a pair of electrically conductive metal stranded wires 36 is embedded within opposite sides of the lower part 31, each of which is positioned directly below the corresponding side groove 35.
  • the wires 36 serve the purpose of supplying electrical power to the overall electroluminescent light 10, as hereinafter described.
  • the electroluminescent light 10 includes an electroluminescent strip 50 for use within the channel 33 of the base strip 30.
  • the electroluminescent strip 50 is manufactured to have a multi-layer structure as referred to in the prior art description above, and has a width smaller than that of the open side of the channel 33 as between the flanges 34. More specifically, the electroluminescent strip 50 has an underside having opposite edges, along which a pair of co-extending continuous electrically conductive tracks 52 (made of silver ink, carbon or the like) is exposed or otherwise provided. While being used in the channel 33, the electroluminescent strip 50 is separated from the wires 36 by the portion of the base strip 30 forming the bottom of the channel 33.
  • the tracks 52 are to be electrically connected to the respective power supply wires 36 by means of a plurality of contact elements 60.
  • Each contact element 60 has a elongate body 62 made of a metal strip, which is bent or folded downwards at opposite ends to form a pair of depending sharp legs 64.
  • the body 62 has, at mid-length of its principal part 63 providing an upper flat surface, an integral side tab 66 which is folded to overlie the body part 63 to form a horizontal clip 68 therewith.
  • the clip 68 presents an open gap having a width substantially the thickness of the electroluminescent strip 50.
  • the contact elements 60 are to be used at regular intervals along and within the base strip 30, which includes the pair of wires 36.
  • the contact element 60 is placed into the groove 35 and aligned with the wire 36 below ( Figure 4).
  • the contact element 60 is then pressed down to have its legs 64 piercing through the portion of the base strip 30 forming the bottom of the channel 33 and penetrating through the wire 36 ( Figure 2). This results in the contact element 60 being fixed in position and coming into electrical contact with the wire 36.
  • the electroluminescent strip 50 is inserted into the channel 33 of the base strip 30, while the side flanged 34 are being temporarily prised open (Figure 5).
  • opposite edges of the electroluminescent strip 50 are inserted into the clips 68 of the corresponding contact elements 60 on opposite sides ( Figure 2), such that the tracks 52 on the underside lie against and thus come into electrical contact with the upper flat surface of the contact element body part 63.
  • the tabs 66 serve to maintain the aforesaid contact by holding the electroluminescent strip 50 in place and, for this reason, may need to be pressed downwards in order to ensure contact with the electroluminescent strip 50.
  • the tabs 66 allow limited relative sliding movement of the electroluminescent strip 50, as may be required when the overall electroluminescent light 10 is bent in order to avoid any excessive tension in the electroluminescent strip 50.
  • the resulting assembly of the components 30, 50 and 60 is finally encased in the outer sheath 40 extruded thereon to form the complete electroluminescent light 10.
  • the electroluminescent light 10 is cut into a suitable length for use, with each end thereof covered by a rectangular plastic end cap 42.
  • One of the end cap 42 incorporates a pair of terminal pins 44 having outer ends 46 and inner ends 48.
  • the outer ends 46 are for connection to an AC or pulsating DC power source.
  • the inner ends 48 are sharp for piercing into the respective end of the base strip 30 and connection with the respective ends of the wires 36.

Landscapes

  • Electroluminescent Light Sources (AREA)
EP00305844A 2000-07-11 2000-07-11 Elektrolumineszierende Beleuchtungsvorrichtung Withdrawn EP1173048A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00305844A EP1173048A1 (de) 2000-07-11 2000-07-11 Elektrolumineszierende Beleuchtungsvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00305844A EP1173048A1 (de) 2000-07-11 2000-07-11 Elektrolumineszierende Beleuchtungsvorrichtung

Publications (1)

Publication Number Publication Date
EP1173048A1 true EP1173048A1 (de) 2002-01-16

Family

ID=8173114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00305844A Withdrawn EP1173048A1 (de) 2000-07-11 2000-07-11 Elektrolumineszierende Beleuchtungsvorrichtung

Country Status (1)

Country Link
EP (1) EP1173048A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1313354A1 (de) * 2001-11-15 2003-05-21 Ewig Industries Co., LTD. Elektrolumineszierende Beleuchtungsvorrichtung
EP1345476A1 (de) * 2002-02-28 2003-09-17 Luk Wah Jackson Chu Elektrolumineszierende Beleuchtungsvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0611040A1 (de) * 1993-02-10 1994-08-17 The Standard Products Company Elektrolumineszentes Leuchtband
WO1999016290A1 (en) * 1997-07-30 1999-04-01 Trotter International Electroluminescent light source and method of making same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0611040A1 (de) * 1993-02-10 1994-08-17 The Standard Products Company Elektrolumineszentes Leuchtband
WO1999016290A1 (en) * 1997-07-30 1999-04-01 Trotter International Electroluminescent light source and method of making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1313354A1 (de) * 2001-11-15 2003-05-21 Ewig Industries Co., LTD. Elektrolumineszierende Beleuchtungsvorrichtung
EP1345476A1 (de) * 2002-02-28 2003-09-17 Luk Wah Jackson Chu Elektrolumineszierende Beleuchtungsvorrichtung

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