EP1357331A2 - Bande lumineuse flexible comprenant des lampes-diodes du type puce-sur-panneau et procédé de fabrication d'une telle bande - Google Patents

Bande lumineuse flexible comprenant des lampes-diodes du type puce-sur-panneau et procédé de fabrication d'une telle bande Download PDF

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Publication number
EP1357331A2
EP1357331A2 EP03252581A EP03252581A EP1357331A2 EP 1357331 A2 EP1357331 A2 EP 1357331A2 EP 03252581 A EP03252581 A EP 03252581A EP 03252581 A EP03252581 A EP 03252581A EP 1357331 A2 EP1357331 A2 EP 1357331A2
Authority
EP
European Patent Office
Prior art keywords
based led
led lamps
string
led lamp
inner layer
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.)
Granted
Application number
EP03252581A
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German (de)
English (en)
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EP1357331B1 (fr
EP1357331A3 (fr
Inventor
Yuan Lin
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Individual
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Publication of EP1357331A3 publication Critical patent/EP1357331A3/fr
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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
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/26—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of rope form, e.g. LED lighting ropes, or of tubular form
    • 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
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • 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
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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]

Definitions

  • the present invention relates to LED (Light Emitting Diode) means and more particularly to a flexible rod light device containing a string of chip on board (C.O.B.) based LED lamps and manufacturing method thereof.
  • LED Light Emitting Diode
  • a process of manufacturing a conventional flexible rod light is shown in FIG. 13. First, solder a terminal 2a of a LED lamp 2 to one end of a conductor section 3. Next, pull the conductor section 3 to pass a side of the LED lamp 2. Then, solder a terminal 2b of a second LED lamp 2 to the other end of the conductor section 3. Then, repeat above three processes to form a string of LED lamps. Next, put a continuous sleeve 1 around the string of LED lamps. Then, wrapping the sleeve 1 with a plastic material (not shown) by extrusion to form a jacket. As a result, the flexible rod light is formed.
  • the prior art suffered from several disadvantages. For example, there is no support means between any two adjacent LED lamps 2 with the conductor section 3 bent therebetween. Further, the LED lamps 2 and the conductor sections 3 tend to be stuck within the sleeve 1 during the manufacturing process. This is particularly true when the sleeve 1 has a length longer than a predetermined one, resulting in an interrupt of the manufacturing process. In a less serious case, a distance between two adjacent LED lamps 2 may be different from that of another two adjacent LED lamps 2. And in turn, the already bent conductor section 3 is further bent or extended. As an end, a desired configuration of equal spaced apart LED lamps 2 is not obtainable. Consequently, a uniform light emitted from the light device is made impossible.
  • LED lamps 2 tend to displace slightly in the sleeve 1, i.e., not reliably secured. As such, light emitted from a displaced LED lamp 2 may not concentrate in a direction parallel to, for example, X-Z plane, i.e., being oblique relative to the X-Z plane.
  • the light device comprises a flexible elongate plate-shaped inner layer formed of a transparent or half-transparent plastic material including two parallel upward flanges on sides and a lengthwise top groove between the flanges; a string of C.O.B. based LED lamps comprising a plurality of series connected units each including a C.O.B. based LED lamp, two conductor sections coupled to opposite ends of the C.O.B. based LED lamp, and a resistor interconnecting the other conductor section of a unit and one conductor section of an adjacent unit so that the string of C.O.B.
  • based LED lamps are secured on the groove by clinging between the flanges; a pair of main wires disposed within the flanges wherein front most and rearmost conductor sections are rested on the main wires in front and rear sides of the inner layer respectively; and a jacket, formed of the same material as the inner layer, wrapped up the inner layer and the string of C.O.B. based LED lamps.
  • a method of manufacturing a flexible rod light device having concentrated light and increased flexibility to withstand a pulling thereof comprising the steps of (a) wrapping a parallel pair of main wires in sides of an inner layer formed of a flexible elongate plastic material by molding wherein the inner layer includes two parallel upward flanges on the sides and a lengthwise top groove between the flanges; (b) soldering one end of a resistor to the other end of one conductor section and the other end thereof to one end of another adjacent conductor section, and interconnecting the conductor sections by an C.O.B. based LED lamp by soldering; (c) continuing step (b) to form a string of C.O.B.
  • based LED lamps including a plurality of units each including the C.O.B. based LED lamp, two conductor sections, and the resistor; (d) placing the string of C.O.B. based LED lamps on the groove and securing the same between the flanges; (e) disposing front most and rearmost conductor sections on the main wire in front and rear sides of the inner layer respectively; and (f) wrapping up the inner layer and the string of C.O.B. based LED lamps by a material the same as the inner layer by extruding to form a jacket.
  • the light device comprises an inner layer 10, a string of C.O.B. based LED lamps 20, a pair of main wires 30 and 31, and a jacket 40.
  • the light device comprises an inner layer 10, a string of C.O.B. based LED lamps 20, a pair of main wires 30 and 31, and a jacket 40.
  • the inner layer 10 is a flexible elongate plate-shaped member formed of a transparent (or half-transparent) plastic material.
  • the inner layer 10 comprises two parallel upward flanges 12 and 13 on both sides and a lengthwise top groove 11 between the flanges 12 and 13.
  • the string of C.O.B. based LED lamps 20 comprises a plurality of units each including a C.O.B. based LED lamp 21 (i.e., C.O.B. based LED lamp 21 mounted on a board), two conductor sections 23 coupled to opposite ends of the C.O.B. based LED lamp 21 by soldering, and a resistor 22 interconnecting the other conductor section 23 of a unit and one conductor section 23 of an adjacent unit by soldering.
  • C.O.B. based LED lamps 21 are series connected. Further, the string of C.O.B. based LED lamps 20 are secured on the groove 11 by clinging between the flanges 12 and 13.
  • the pair of main wires 30 and 31 are disposed within the flanges 12 and 13.
  • a front most conductor section 230 is disposed on the main wire 30 in a front side of the inner layer 10 by a tool.
  • a rearmost conductor section 231 is disposed on the main wire 31 in a rear side of the inner layer 10 by a tool.
  • the main wires 30 and 31 interconnect a power source (not shown) and the string of C.O.B. based LED lamps 20 to form an electric circuit.
  • the jacket 40 having the same plastic material as the inner layer 10, is formed to wrap up the inner layer 10 and the string of C.O.B. based LED lamps 20 by extrusion.
  • FIG. 4 specifically, there is shown a side plan view of the light device of the present invention. A smoothness of flat top and bottom surface 41 and 42 of the jacket 40 can be seen clearly. Also, light emitted from the C.O.B. based LED lamp 21 (as indicated by arrow) concentrates in a direction perpendicular to the top surface 41, thus obtaining an increased illumination.
  • FIG. 5 specifically, there is shown another embodiment of the jacket 40 of the present invention wherein a plurality of parallel troughs 410 and 420 are formed on the top and bottom surfaces 41 and 42 respectively.
  • a process of manufacturing the flexible rod light device of the invention comprises the steps of:
  • the benefits of this invention include: the C.O.B. based LED lamps 21 are fastened and have the same orientation. Enhanced flexibility of the conductor sections 23 on the groove 11 (i.e., X-Y plane as assumed) to withstand a pulling of the light device. Protection the resistors 22 against damage. Easy installation is effected due to the flat top and bottom surfaces 41 and 42 of the jacket 40. Light emitted from C.O.B. based LED lamps 21 (as indicated by arrow) can concentrate in a direction perpendicular to the top surface 41, i.e., increased illumination.
  • Each unit comprises a C.O.B. based LED lamp 21, a SMD resistor (or current control IC) 22a mounted on the C.O.B. based LED lamp 21 by soldering, and a conductor section 23 coupled between the C.O.B. based LED lamps 21 of two adjacent units by soldering.
  • step 2 may be slightly adjusted as the following: form each unit of the string of C.O.B. based LED lamps 20 by passing through a soldering paste or by spot welding on a section of wire of copper foil.
  • FIG. 7 there is shown a third preferred embodiment of the invention.
  • An elongate copper foil section 24 is used to replace the conductor section for interconnecting the C.O.B. based LED lamps 21 of two adjacent units by soldering.
  • SMD resistor (or current control IC) 22a is mounted on a bottom of the C.O.B. based LED lamp 21.
  • FIG. 8 there is shown a fourth preferred embodiment of the invention.
  • the difference of the third and the fourth embodiments is that the elongate copper foil section 24 is replaced by a conductor section 23a and a flexible sleeve 25 is sleeved on the conductor section 23a.
  • a benefit of permitting a pulling of the sleeve 25 without disengaging the conductor section 23a from the adjacent C.O.B. based LED lamp 21 is obtained.
  • an enhanced flexibility of the conductor section is achieved.
  • FIG. 9 there is shown a fifth preferred embodiment of the invention.
  • the elongate copper foil section 24 is replaced by an elongate metal foil section 27.
  • a temporary tape 26 having a plurality of equally spaced apart rectangular openings 261 (formed by punching) each sized for positioning the C.O.B. based LED lamp 21 and small portions of the elongate metal foil sections 27 therein is provided.
  • the tape 26 is removed once the string of C.O.B. based LED lamps 20 has been secured on the groove 11.
  • the coupling of the C.O.B. based LED lamp 21 and the elongate metal foil sections 27 may be effected by means of a solder machine having a plurality of soldering means for simultaneous soldering.
  • FIG. 10 there is shown a sixth preferred embodiment of the invention.
  • a plurality of equally spaced apart rectangular recesses 15 are formed on the groove 11 by punching wherein each recess 15 is sized to receive and secure the C.O.B. based LED lamp 21 therein.
  • a plurality of bubbles are formed on top of each recess 15 by controlling extrusion temperature and extrusion speed of the jacket.
  • a flexibility of the light device is made possible because the bubbles can provide a buffering effect between the recess 15 and the C.O.B. based LED lamp 21 when the light device is bent.
  • a plurality of raised points are formed on top of each recess 15. The raised points also can provide a buffering effect between the recess 15 and the C.O.B. based LED lamp 21 when the light device is bent.
  • FIG. 11 there is shown a seventh preferred embodiment of the invention.
  • the difference of the fifth and the seventh embodiments is that the tape 26 is secured on top of the inner layer 10 by means of adhesive. Such also can achieve the purpose of positioning and securing the string of C.O.B. based LED lamps 20 on the inner layer 10.
  • FIG. 12 there is shown an eighth preferred embodiment of the invention.
  • the difference of the seventh and the eighth embodiments are that a plurality of equally spaced apart slots 16 are formed on either side of the groove 11 abutted on the flanges 12 and 13 and a plurality of equally spaced apart latched members 263 are formed on either side of the string of C.O.B. based LED lamps 20 wherein each latched member 263 is inserted into and secure in each corresponding slot 16.
  • side surfaces 43 and 44 of the jacket 40 can be made flat. Thus, a substantially rectangular or square cross-section of the light is obtained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
EP03252581A 2002-04-25 2003-04-24 Bande lumineuse flexible comprenant des lampes-diodes du type puce-sur-panneau et procédé de fabrication d'une telle bande Expired - Lifetime EP1357331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN02117197 2002-04-25
CNB021171971A CN100547282C (zh) 2002-04-25 2002-04-25 可挠性发光体装置及其制造方法

Publications (3)

Publication Number Publication Date
EP1357331A2 true EP1357331A2 (fr) 2003-10-29
EP1357331A3 EP1357331A3 (fr) 2006-04-26
EP1357331B1 EP1357331B1 (fr) 2008-08-06

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ID=28680795

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EP03252581A Expired - Lifetime EP1357331B1 (fr) 2002-04-25 2003-04-24 Bande lumineuse flexible comprenant des lampes-diodes du type puce-sur-panneau et procédé de fabrication d'une telle bande

Country Status (7)

Country Link
EP (1) EP1357331B1 (fr)
JP (1) JP3970800B2 (fr)
KR (1) KR100967192B1 (fr)
CN (1) CN100547282C (fr)
AT (1) ATE403827T1 (fr)
CA (1) CA2426500C (fr)
DE (1) DE60322619D1 (fr)

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EP1583147A3 (fr) * 2004-04-01 2009-10-28 Yuan Lin Dispositif semiconducteur flexible totalement en couleur pour source de lumière
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DE102007017604B4 (de) * 2006-10-09 2012-12-06 Chang-Gui Liu Verfahren zur Herstellung einer Lampenreihe
US8427048B2 (en) 2007-03-15 2013-04-23 Sharp Kabushiki Kaisha Light emitting device and method for manufacturing the same
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US8651698B2 (en) 2007-12-21 2014-02-18 3M Innovative Properties Company Lighting assemblies and methods of making same
US8789971B2 (en) 2006-09-12 2014-07-29 Huizhou Light Engine Ltd Integrally formed single piece light emitting diode light wire
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CN104934515A (zh) * 2015-06-26 2015-09-23 浙江亿米光电科技有限公司 柔性灯片及其加工工艺应用该灯片的照明装置及制造方法
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Cited By (42)

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Publication number Priority date Publication date Assignee Title
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CA2426500A1 (fr) 2003-10-25
EP1357331B1 (fr) 2008-08-06
EP1357331A3 (fr) 2006-04-26
CN100547282C (zh) 2009-10-07
CN1453498A (zh) 2003-11-05
JP2003347593A (ja) 2003-12-05
CA2426500C (fr) 2011-04-05
KR100967192B1 (ko) 2010-07-05
DE60322619D1 (de) 2008-09-18
ATE403827T1 (de) 2008-08-15
JP3970800B2 (ja) 2007-09-05
KR20030084759A (ko) 2003-11-01

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