WO2014183231A1 - 带有全防水灌胶结构的led灯条及制作方法 - Google Patents

带有全防水灌胶结构的led灯条及制作方法 Download PDF

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Publication number
WO2014183231A1
WO2014183231A1 PCT/CN2013/000585 CN2013000585W WO2014183231A1 WO 2014183231 A1 WO2014183231 A1 WO 2014183231A1 CN 2013000585 W CN2013000585 W CN 2013000585W WO 2014183231 A1 WO2014183231 A1 WO 2014183231A1
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WIPO (PCT)
Prior art keywords
led
light bar
led light
wire
circuit board
Prior art date
Application number
PCT/CN2013/000585
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English (en)
French (fr)
Inventor
田茂福
Original Assignee
Tian Maofu
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 Tian Maofu filed Critical Tian Maofu
Priority to PCT/CN2013/000585 priority Critical patent/WO2014183231A1/zh
Publication of WO2014183231A1 publication Critical patent/WO2014183231A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00Gas-tight or water-tight arrangements
    • F21V31/04Provision of filling media
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00Lighting devices or systems using a string or strip of light sources
    • F21S4/20Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the invention relates to the field of LED light bar and LED light bar sealing. More specifically, the present invention relates to a full waterproof potting structure of an LED light bar and a manufacturing method thereof. Background technique
  • the sealing of traditional LED light strips is usually done by means of dispensing glue, that is, after the SMT placement of LEDs and other components on the LED strips, the front side of the strips (ie LEDs and other strips) The side of the component is drip with a liquid PU material (silica gel), then baked or air dried.
  • a liquid PU material silicon gel
  • the LED strips made by the epoxy method can not be completely waterproof, because the drip irrigation process only drip the front of the LED strip, and it will appear over time when the product is immersed in water or used outdoors.
  • the joint between the PU glue (silica gel) and the surface of the LED strip appears to be warped and cracked, and thus does not function as a waterproof.
  • the traditional LED light bar itself is not high in strength. If the length is too long, it will be easily bent or even damaged due to its own weight (or the weight of the attached mounting hardware), or due to the tension of the tension. damage.
  • Current LED strips may require long lengths in certain applications, such as tens of meters or even hundreds of meters long, which poses new challenges and higher requirements for the current strength of LED strips.
  • the present invention is directed to solving the above and other technical problems.
  • the entire light bar is passed through the running extrusion die, thereby applying a layer of waterproof glue on the surface sealing ring of the entire LED light bar.
  • an LED light bar comprising: an LED light bar body (1), wherein the LED light bar body (1) comprises an LED single-sided circuit board made of three wires, and a plurality of LEDs mounted on the LED single-sided circuit board, the LED single-sided circuit board comprising: three metal wires arranged side by side but spaced apart from each other, including a third wire located in the middle of the single-sided circuit board of the LED, And first and second wires respectively located on opposite sides of the third wire and spaced apart from the third wire along a longitudinal direction of the LED single-sided circuit board; the third wire forming the LED single side An intermediate LED line of the circuit board comprising two or more intermediate line segments, wherein an intermediate LED line is disconnected by a slit between adjacent intermediate line segments; wherein the LED light bar further comprises: an extruded ring wrapped in A full waterproof potting structure (2) on the LED light bar body (1).
  • the LED single-sided wiring board further includes a front cover film covering the front surface of the LED single-sided circuit board, and the front cover film is provided with a plurality of openings to expose The corresponding pads on the LED single-sided circuit board.
  • the LED single-sided wiring board further includes a solder resist ink printed on a front surface of the LED single-sided wiring board.
  • the LED single-sided wiring board further includes a reverse cover film overlying the reverse side of the LED single-sided wiring board.
  • the plurality of LEDs are mounted on a plurality of line segments of the intermediate LED line in series, in parallel, or in series and parallel combinations.
  • the three juxtaposed metal wires are three metal wires that are parallel to each other.
  • the LED light bar further comprises one or more pieces molded in the fully waterproof potting structure (2) by extrusion along with the LED light bar body (1) Reinforce the wire, such as steel wire, wire or nylon wire.
  • the plurality of openings on the front cover film include one or more pairs of conductive pad holes on the front cover film corresponding to positions of the first wire and the intermediate LED line and a soldering hole, the one or more pairs of via pads are respectively located on the first and intermediate LED lines when the front cover film is attached to the circuit board, and/or
  • the soldering holes span the first and intermediate LED lines such that portions of the first and intermediate LED lines are exposed within the soldering holes.
  • the plurality of openings in the front cover film comprise a window opening in the form of one or more pairs of component pad holes on the front cover film corresponding to the position of the intermediate LED line
  • each pair of the element pad holes are respectively located on adjacent intermediate line segments.
  • the plurality of openings in the front cover film comprise fenestrations in the form of one or more pairs of end holes, when the front cover film is attached to the LED single-sided circuit board Each pair of the end holes is located on the first wire and the second wire, respectively.
  • the metal wire is a flat wire, a metal strand or a metal foil.
  • the plurality of openings in the front cover film comprise one or more tin boring holes on the front cover film corresponding to a substantially intermediate width position of the LED single-sided circuit board Formal opening of the window.
  • the plurality of openings on the front cover film include one or more pairs of conductive pad holes on the front cover film corresponding to positions of the second wire and the intermediate LED line and And a soldering hole, when the front cover film is pasted on the circuit board, the one or more pairs of via pads are respectively located on the second wire and the intermediate LED line, and/or The soldering holes span the second wire and the intermediate LED line such that a portion of the second wire and the intermediate LED line are exposed within the soldering hole.
  • the first wire and the second wire are continuous uninterrupted length metal wires, and the lengths of the first wire and the second wire are preferably in the range of 0.5 to 1000 meters.
  • the fully waterproof potting structure (2) is a fully waterproof potting sleeve (2) that tightly encloses the LED strip body (1).
  • the fully waterproof potting sleeve (2) has a hollow lumen (2A), wherein the shape of the lumen (2A) and the contour of the LED strip body (1) Match.
  • the fully waterproof potting structure (2) is made of a PVC material, a TPU material, or a mixture of PVC and TPU.
  • a waterproof rubber indenter (4) is provided at a joint portion between the end of the LED light bar main body (1) and the external lead wire (3).
  • the reinforcing wire is disposed on a side of the LED light bar body (1) opposite to the direction in which the LED emits light.
  • a method of sealing an LED light bar comprising: providing an LED light bar body (1), wherein the LED light bar body (1) comprises an LED single-sided circuit board made of three wires And a plurality of LEDs mounted on the LED single-sided circuit board, the LED single-sided circuit board comprising: three metal wires arranged side by side but spaced apart from each other, including a third portion located in the middle of the single-sided circuit board of the LED a wire, and first and second wires respectively spaced on opposite sides of the third wire and spaced apart from the third wire along a longitudinal direction of the LED single-sided circuit board; the third wire forming the LED An intermediate LED line of a single-sided circuit board comprising two or more intermediate line segments, wherein an intermediate LED line is disconnected by a slit between adjacent intermediate line segments; wherein the method further comprises: through an extrusion process, The sealing material is extrusion molded on the LED light bar body (1) to form a fully waterproof potting structure (2) that surrounds the LED light bar body (1)
  • the fully waterproof potting structure (2) is formed by extrusion molding into a fully waterproof potting sleeve (2) that tightly encloses the LED strip body (1).
  • the fully waterproof potting sleeve (2) is shaped to have a hollow lumen (2A), wherein the shape of the lumen (2A) and the LED strip body (1) The outline of the ) matches.
  • the encapsulating material is a PVC material, a TPU material, or a mixture of PVC and TPU.
  • the joint portion between the end of the LED strip body (1) and the external lead (3) is provided with a waterproof adhesive pressure 4) by injection molding.
  • the waterproof rubber indenter is an indenter that covers the joint portion by injection molding.
  • one or more reinforcing wires are also molded into the fully waterproof potting structure (2) while the extrusion molding is being performed, for reinforcing the LED light bar .
  • the reinforcing wire is a steel wire, a wire or a nylon wire.
  • the reinforcing wire is extrusion molded in the fully waterproof potting structure (2) in a manner spaced apart from the LED light bar body (1).
  • the LED light strip waterproof sealing structure of the invention has excellent waterproof sealing performance, so that the weather resistance, working life and reliability of the LED light strip product after sealing are greatly improved, and the production process thereof Simple, fast, and productive.
  • FIG. 1 is a schematic cross-sectional view of an LED light bar having completed a sealing process in accordance with an embodiment of the present invention, clearly showing a fully waterproof potting sleeve for an LED light bar.
  • Figure 2 is a schematic cross-sectional view of the fully waterproof potting sleeve of Figure 1 with the LED strip removed for clarity.
  • FIG 3 is a plan view of an LED light bar having completed a sealing process in accordance with an embodiment of the present invention, showing a waterproof rubber indenter at one end of the LED light bar.
  • FIG. 4 is a schematic cross-sectional view of an LED light bar that has been completed in accordance with another embodiment of the present invention, clearly showing a fully waterproof potting sleeve for an LED strip, and simultaneously being fixed to a fully waterproof seal.
  • Two reinforcing wires in the glue casing, wherein the two reinforcements The line is located on the opposite side of the LED strip from the LED illumination direction to avoid blocking the LED light.
  • the "LED light bar” should be understood in a broad sense, including not only the LED flexible light bar, that is, the light bar for mounting the LED on the flexible circuit board (FPC), but also the LED light bar, that is, LED strips (also known as “hard boards” or “rigid boards” in the industry) are equipped with LED strips; not only include the main body of the LEDs on the single-sided board, but also double-sided boards or multilayer lines The main body of the LED strip on which the LED is mounted, and so on. These are all within the scope of the invention.
  • the LED light bar body is an LED single-sided circuit board, and three metal wires are directly used, preferably flat metal wires, such as copper wires, aluminum wires, aluminum alloy wires, copper. Alloy wires, nickel-clad aluminum wires, nickel-clad iron wires, etc., to make LED single-sided flexible circuit boards.
  • the structure and manufacturing process of the circuit board are simplified, the process cost and the raw material cost are reduced, and environmental pollution and energy consumption are reduced.
  • the LED single-sided flexible circuit board thus produced can also improve the product yield and improve the reliability of the product.
  • an LED single-sided circuit board made of three wires comprising: three metal wires arranged side by side but spaced apart from each other, including the LED a third wire in the middle of the single-sided circuit board, and first and second wires respectively spaced on opposite sides of the third wire and spaced apart from the third wire along the longitudinal direction of the LED single-sided circuit board;
  • the LED single a front cover film on the front side of the surface circuit board, having a plurality of openings on the front cover film to expose corresponding pads on the LED single-sided circuit board; and covering on the reverse side of the circuit board a reverse cover film, wherein an intermediate LED line including two or more intermediate line segments of the LED single-sided circuit board is directly formed by the third wire, and an intermediate LED is formed by a slit between adjacent intermediate line segments The line is disconnected.
  • first and second conductors described above can serve as the LED active line, i.e., the common conductor of the third conductor, primarily for carrying a large amount of operating current during operation.
  • load currents such as heat dissipation, improved reliability, and the like.
  • the cutting process may not be performed on the first and second common conductors, so they are continuously uninterrupted lengths.
  • the intermediate LED circuit is soldered with LEDs, and the LED single-sided circuit board and the LEDs on the LED are subjected to potting treatment to form a potted waterproof LED circuit board.
  • the three juxtaposed metal wires are three metal wires which are parallel to each other.
  • the first wire and the second wire are continuous uninterrupted length metal wires.
  • the plurality of openings in the front cover film include one or more on the front cover film corresponding to the positions of the first wire and the intermediate LED line
  • the one or more pairs of via pad holes are respectively located in the first wire and the middle On the LED line, and/or the soldering holes span the first and intermediate LED lines such that portions of the first and intermediate LED lines are exposed within the solder holes.
  • the plurality of openings in the front cover film include one or more pairs of elements on the front cover film corresponding to the position of the intermediate LED line a window in the form of a pad hole, wherein when the front cover film is pasted on the circuit board, each pair of the component pad holes are respectively located in adjacent ones On the line segment.
  • the plurality of openings in the front cover film comprise fenestrations in the form of one or more pairs of end holes, when attached to the LED single-sided circuit board
  • each pair of the end holes are respectively located on the first wire and the second wire.
  • the metal wire is a flat wire, a metal strand or a metal foil.
  • the plurality of openings in the front cover film comprise one or more substantially corresponding to the LED single-sided circuit board on the front cover film. Opening window in the form of a soldered hole in the middle width position.
  • the plurality of openings in the front cover film include one or more on the front cover film corresponding to the positions of the second wire and the intermediate LED line
  • the one or more pairs of via pad holes are respectively located in the second wire and the middle On the LED line, and/or the soldering holes traverse the second wire and the intermediate LED line such that a portion of the second wire and the intermediate LED line are exposed within the soldering hole.
  • the slit between the intermediate line segments is a die cut, die cut or laser cut cut.
  • the LED single-sided wiring board has an uninterrupted length of 0.5 to 500 meters.
  • Another preferred embodiment of the LED light strip body according to the present invention further includes an LED and a resistor mounted on the LED circuit board, wherein the model number of the LED includes one or more of 335, 3528, 5050, and 5060
  • the type of the resistor includes one or more of 0603, 0805, and 0812.
  • the LED single-sided wiring board has a width of 2 - 50 mm.
  • the LED is single-sided
  • the uninterrupted length of the board is 0.5-500 meters.
  • an extrusion die is prepared which is known in the art and will not be described in detail.
  • a waterproof potting material for potting the LED strips is prepared for the extrusion process, preferably PVC material, TPU material, or PVC and TPU mixture.
  • This type of potting material is not only well used for extrusion molding, but also well adapted to the outline of LED strips, but also has good heat dissipation, light transmission and weather resistance, and is particularly suitable for wrapping LED strips.
  • the good light transmittance of the LED light strip can be ensured, so the waterproof potting structure made by such waterproof potting material does not affect the normal operation, light emission and heat dissipation of the LED light.
  • LED strips conventionally known can be used, including LED flexible strips and LED strips, which are installed after components (including LEDs, resistors, etc.) that have completed the LED strips, such as SMT mounting.
  • the light bar passes through the extrusion mold with the extruded material at a certain speed, thereby completing the extrusion sealing process of the outer surface of the entire LED light bar, forming a full waterproof potting sleeve enclosing the entire LED light bar.
  • the construction of the fully waterproof potting sleeve and its extrusion sealing process provide 360° all-round protection for the LED strip. It is fully waterproof and sealed.
  • FIG. 1 shows a cross-sectional view of an LED strip 1 of a completed encapsulation process, clearly showing a fully waterproof potting sleeve 2 for an LED strip 1 in accordance with an embodiment of the present invention.
  • the entire LED light bar 1, including the LED and other components on the front side of the light are fully encapsulated by the fully waterproof potting sleeve 2 which is extruded.
  • Figure 2 further shows a schematic cross-sectional view of the fully waterproof potting sleeve 2 shown in Figure 1, with the LED strip 1 removed for clarity.
  • the construction of the fully waterproof potting sleeve 2 is clearly shown in the figure.
  • the extruded fully waterproof potting sleeve 2 is a hollow tubular structure forming a hollow lumen 2A.
  • the size and shape of the lumen 2A closely match the contour of the LED strip. Since the fully waterproof potting sleeve 2 is extruded, the lumen 2A will easily vary depending on the contour of the packaged LED strip. And different.
  • the main body of the fully waterproof potting sleeve 2 is a sleeve structure comprising a sleeve upper portion 2C housed on the front side of the LED strip 1 and a sleeve lower portion 2B housed on the back side of the LED strip 1.
  • the shape of the full waterproof potting sleeve 2 shown in FIG. 1 is curved, for example, the cross section of the sleeve upper portion 2C is a curved surface, it will be apparent to those skilled in the art that the full waterproof potting sleeve 2 can Any desired shape, such as a square, a circle, an ellipse, a polygon, etc., depending on the needs of the customer or application, is within the scope of the present invention.
  • FIG. 3 is a plan view of an LED light bar 1 which has been subjected to a sealing process in accordance with an embodiment of the present invention, showing a water sealant indenter 4 at one end of the LED light bar 1.
  • a full waterproof potting sleeve 2 has been sealed on the LED strip 1.
  • a lead pad is generally provided, from which the external lead 3 is led out and used to connect to an external power source for illuminating the LED lamp to operate normally.
  • the joint between the external lead 3 and the end of the LED light strip 1 product (lead pad) (shown by the dashed box in FIG. 3) is more likely to seep into the water, thereby causing the LED light strip to be permanently stable, for example, outdoors. jobs.
  • the joint portion is covered, for example, by injection molding.
  • a waterproof rubber indenter 4 covers the joint portion, that is, sealingly combined with the external wire 3 at the joint portion, and is also tightly sealed with the end of the LED light strip 1 product, thereby To further improve the effect of waterproofing and joint strength.
  • FIG. 3 shows the waterproof indenter 4 disposed at one end of the LED strip, it will be apparent to those skilled in the art that the waterproof indenter can be disposed at both ends of the LED strip to ensure the full waterproof performance of the product. .
  • Selected equipment SJ-65HY sheathing machine, power distribution cabinet, passive pay-off rack, sink, inkjet printer, vertical tractor, and cable take-up machine.
  • Selected tools scissors, clamps, calipers with gauges, thermometers, scales, wrenches.
  • Preparation process before production The production is heated one hour ahead of time to the SJ-65HY extruder. Before heating, first observe whether the power control cabinet and the heater are abnormal. When heating, first observe whether the heating zone switches are closed, if closed and then open Control the main power inside the cabinet, and then turn on the power switch of each heating zone in turn to observe whether the current in each heating zone is normal, and set the temperature of each heating zone.
  • the set temperatures for each heating zone vary according to the materials used:
  • Zone 2 150-160 ° C
  • Zone 3 175-185 ° C
  • Zone 4 170-185 ° C
  • Zone 5 166-180 ° (: .
  • Pre-release preparation procedures including: changing molds, changing screens, checking semi-finished light strips, raw materials, etc.
  • the waterproof sealing structure of the LED light strip manufactured by the method of the invention has excellent waterproof sealing performance, and the weather resistance, working life and reliability of the sealed LED light strip product are improved. It is greatly improved, and its production process is simple, fast, low-cost, and the production efficiency is also very high.
  • one or more reinforcing wires such as steel wire, iron wire, nylon wire, or the like, are simultaneously extruded and sealed on the LED light bar 1.
  • the reinforcing structure is arranged side by side with the LED strips 1, but preferably spaced apart from one another, and is also extrusion molded in the fully waterproof potting sleeve 2, for example as shown in FIG.
  • the LED strip 1 which has been fully water-filled can have higher strength even in applications of longer lengths, such as tens of meters or even hundreds of meters, without being possible due to possible applications. A large pulling force causes damage.
  • FIG. 4 is a cross-sectional view showing an LED light bar of a completed encapsulation process according to another embodiment of the present invention, clearly showing a full waterproof potting sleeve for an LED strip and simultaneously being fixed to the sealant.
  • the LED on the light bar 1 emits light.
  • the reinforcing wire 5 shown in FIG. 4 is located on the back side of the LED light bar 1 (ie, the side opposite to the light outgoing direction) and is close to the LED light bar 1, it will be understood by those skilled in the art that the reinforcing wire 5 can also be disposed. In other locations, such as a distance from the LED light strip 1, located on the side of the LED light strip 1, and the number of reinforcing wires 5 may be more or less, and the like.

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  • General Engineering & Computer Science (AREA)
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Abstract

一种带有全防水灌胶结构的LED灯条及一种对LED灯条封胶的制作方法。其中所述LED灯条包括:LED灯条主体(1),所述LED灯条主体(1)包括由三条导线制作的LED单面线路板,以及安装在该LED单面线路板上的多个LED,该LED单面线路板包括:三条并置排列但彼此间隔开的金属导线;覆盖在该线路板的正面上的正面覆盖膜,在正面覆盖膜上具有多个开孔,以暴露出LED单面线路板上的相应焊盘;覆盖在线路板反面上的反面覆盖膜,其中直接由第三导线制作该线路板的包含两个以上中间线路段的中间LED线路,在相邻的中间线路段之间通过切口而形成中间LED线路的断开;该LED灯条还包括挤塑环包在LED灯条主体(1)上的全防水灌胶结构(2)。所述的LED灯条防水封胶的防水密封性能好,封胶后的LED灯条产品的耐候性、工作寿命和可靠性大大提高,而且其生产工艺简单、快速,生产效率高。

Description

带有全防水灌胶结构的 LED灯条及制作方法 技术领域
本发明涉及 LED灯条及 LED灯条封胶领域, 更具体而言, 本发 明涉及 LED灯条的全防水灌胶结构及其制作方法。 背景技术
传统的 LED灯条的封胶, 通常是采用滴胶的方式, 即, 在完成 对 LED灯条进行 SMT贴装 LED和其它元器件之后,对灯条的正面 (即 灯条的有 LED和其它元器件的那一面)用液态 PU料 (硅胶)进行滴灌, 然后进行烘烤或是自然风干。 但是, 这种滴胶方式在采用烘烤或自然 风干进行滴胶固化时, 不仅涉及额外的工序, 而且该工序需要花很长 的时间, 生产效率太低, 占用的生产空间大, 并且防水等级低。
不仅如此, 这样采用滴胶方式制作出来的 LED灯条不能完全防 水,因为滴灌的过程只是对 LED灯条的正面进行滴灌,在产品浸入水 中或是在户外使用时, 随着时间的推移会出现 PU胶(硅胶) 与 LED 灯条表面之间的结合部位出现起翘、 裂开的现象, 进而起不到防水的 作用。
不仅如此, 传统的 LED灯条本身强度不高, 如果长度太长, 将 会由于自身重量(或连带的安装配件重量)而导致其易于被拉弯或甚 至损坏,或者由于拉紧的张力而导致损坏。而目前的 LED灯条在某些 应用场合可能需要很长的长度, 例如几十米或甚至上百米长, 这对 LED灯条的目前强度提出了新的挑战和更高要求。
因此, 在本领域中需要有一种新型的 LED灯条封胶技术来解决 上述技术问题以及其它技术问题, 并提供优于现有技术的诸多优良技 术效果。 发明内容
本发明旨在解决以上的和其它的技术问题。
根据本发明, 在完成对 LED灯条进行 SMT贴装 LED和其它元 器件之后,使整个灯条通过运转中的挤塑模具,从而在整个 LED灯条 的表面密封环包上一层防水胶, 形成 LED灯条的全防水灌胶结构。
具体而言, 根据本发明, 提供了一种 LED灯条, 包括: LED灯 条主体 (1), 其中, 所述 LED灯条主体 (1)包括由三条导线制作的 LED 单面线路板,以及安装在该 LED单面线路板上的多个 LED,所述 LED 单面线路板包括: 三条并置排列但彼此间隔开的金属导线, 包括位于 所述 LED单面线路板中间的第三导线,以及分别位于所述第三导线两 侧且分别与所述第三导线沿所述 LED单面线路板的纵向间隔开的第 一导线和第二导线;所述第三导线形成所述 LED单面线路板的包含两 个以上中间线路段的中间 LED线路,在相邻的中间线路段之间通过切 口而形成中间 LED线路的断开; 其中, 所述 LED灯条还包括: 挤塑 环包在所述 LED灯条主体 (1)上的全防水灌胶结构 (2)。
根据本发明的一方面, 所述 LED单面线路板还包括覆盖在所述 LED单面线路板的正面上的正面覆盖膜,在所述正面覆盖膜上设有多 个开孔, 以暴露出所述 LED单面线路板上的相应焊盘。
根据本发明的另一方面, 所述 LED单面线路板还包括印刷在所 述 LED单面线路板的正面上的阻焊油墨。
根据本发明的另一方面, 所述 LED单面线路板还包括覆盖在所 述 LED单面线路板的反面上的反面覆盖膜。
根据本发明的另一方面, 所述多个 LED以串联、 并联、 或者串 联加并联组合的方式安装在中间 LED线路的多个线路段上。
根据本发明的另一方面,所述三条并置的金属导线是彼此平行的 三条金属导线。
根据本发明的另一方面, LED灯条还包括连同所述 LED灯条主 体 (1)通过挤塑的方式被模制在全防水灌胶结构 (2)中的一条或者多条 加强线, 例如钢丝、 铁丝或者尼龙线。
根据本发明的另一方面,所述正面覆盖膜上的多个开孔包括在所 述正面覆盖膜上的对应于第一导线和中间 LED线路位置的一对或多 对导通焊盘孔和 /或锡焊孔, 当在所述线路板上贴上所述正面覆盖膜 时,所述一对或多对导通焊盘孔分别位于所述第一导线和中间 LED线 路上, 并且 /或者所述锡焊孔横跨所述第一导线和中间 LED线路, 使 得在所述锡焊孔内暴露出所述第一导线和中间 LED线路的部分线路。
根据本发明的另一方面,所述正面覆盖膜上的多个开孔包括位于 所述正面覆盖膜上的对应于所述中间 LED线路位置的一对或多对元 件焊盘孔形式的开窗, 其中当在所述线路板上贴上所述正面覆盖膜 时, 每一对所述元件焊盘孔分别位于相邻的中间线路段上。
根据本发明的另一方面,所述正面覆盖膜上的多个开孔包括一对 或多对端孔形式的开窗,当在所述 LED单面线路板上贴上所述正面覆 盖膜时, 每一对所述端孔分别位于所述第一导线和第二导线上。
根据本发明的另一方面, 所述金属导线是扁平导线、 金属绞线或 金属箔片。
根据本发明的另一方面,所述正面覆盖膜上的多个开孔包括一个 或多个位于所述正面覆盖膜上的对应于所述 LED单面线路板的大致 中间宽度位置的锡悍孔形式的开窗。
根据本发明的另一方面,所述正面覆盖膜上的多个开孔包括在所 述正面覆盖膜上的对应于第二导线和中间 LED线路位置的一对或多 对导通焊盘孔和 /或锡焊孔, 当在所述线路板上贴上所述正面覆盖膜 时,所述一对或多对导通焊盘孔分别位于所述第二导线和中间 LED线 路上, 并且 /或者所述锡焊孔横跨所述第二导线和中间 LED线路, 使 得在所述锡焊孔内暴露出所述第二导线和中间 LED线路的部分线路。
根据本发明的另一方面,所述第一导线和第二导线是连续不间断 长度的金属导线, 所述第一导线和第二导线的长度优选在 0.5-1000米 的范围内。 根据本发明的另一方面,所述全防水灌胶结构 (2)是紧密包封所述 LED灯条主体 (1)的全防水灌胶套管 (2)。
根据本发明的另一方面,所述全防水灌胶套管 (2)具有中空的管腔 (2A), 其中所述管腔 (2A)的形状与所述 LED灯条主体 (1)的轮廓相符。
根据本发明的另一方面,所述全防水灌胶结构 (2)由 PVC料、 TPU 料、 或 PVC与 TPU的混合料制成。
根据本发明的另一方面, 在所述 LED灯条主体 (1)的末端与外接 导线 (3)之间的接头部位设有防水胶压头 (4)。
根据本发明的另一方面,所述加强线设置在所述 LED灯条主体 (1) 的与 LED发光方向相反的一侧。
根据本发明, 还提供了一种对 LED灯条封胶的方法, 包括: 提 供 LED灯条主体 (1),其中所述 LED灯条主体 (1)包括由三条导线制作 的 LED单面线路板, 以及安装在该 LED单面线路板上的多个 LED, 所述 LED单面线路板包括: 三条并置排列但彼此间隔开的金属导线, 包括位于所述 LED单面线路板中间的第三导线,以及分别位于所述第 三导线两侧且分别与所述第三导线沿所述 LED单面线路板的纵向间 隔开的第一导线和第二导线;所述第三导线形成所述 LED单面线路板 的包含两个以上中间线路段的中间 LED线路,在相邻的中间线路段之 间通过切口而形成中间 LED线路的断开; 其中, 所述方法还包括:通 过挤塑工艺, 将封胶材料挤塑模制在所述 LED灯条主体 (1)上, 而形 成环包所述 LED灯条主体 (1)的全防水灌胶结构 (2)。
根据本发明的另一方面,将所述全防水灌胶结构 (2)通过挤塑模制 制作成紧密包封所述 LED灯条主体 (1)的全防水灌胶套管 (2)。
根据本发明的另一方面,将所述全防水灌胶套管 (2)成形为具有中 空的管腔 (2A),其中所述管腔 (2A)的形状与所述 LED灯条主体 (1)的轮 廓相符。
根据本发明的另一方面, 所述封胶材料是 PVC料、 TPU料、 或 PVC与 TPU的混合料。 根据本发明的另一方面, 在所述 LED灯条主体 (1)的末端与外接 导线 (3)之间的接头部位通过注塑的方式设置防水胶压 4)。
根据本发明的另一方面,所述防水胶压头是通过注塑的方式覆盖 所述接头部位的压头。
根据本发明的另一方面, 在进行所述挤塑模制的同时, 将一条或 多条加强线也模制在所述全防水灌胶结构 (2)中, 用于加强所述 LED 灯条。
根据本发明的另一方面, 所述加强线是钢丝、 铁丝或者尼龙线。 根据本发明的另一方面, 所述加强线以与所述 LED灯条主体 (1) 间隔开的方式被挤塑模制在所述全防水灌胶结构 (2)中。
与传统的滴胶技术相比, 本发明的 LED灯条防水封胶构造防水 密封性能非常好,使得封胶后的 LED灯条产品的耐候性、工作寿命和 可靠性大大提高, 而且其生产工艺简单、 快速, 生产效率也非常高。 附图说明
在以下对附图和具体实施方式的描述中, 将阐述本发明的一个或 多个实施例的细节。 从这些描述、 附图以及权利要求中, 可以清楚本 发明的其它特征、 目的和优点, 但附图中的实施例不构成对本发明的 任何限制, 在附图中:
图 1是根据本发明一实施例的已完成封胶工艺的 LED灯条的横 截面示意图, 清楚地显示了用于 LED灯条的全防水灌胶套管。
图 2是图 1所示的全防水灌胶套管的横截面示意图,其中为了清 楚起见去除了 LED灯条。
图 3是根据本发明一实施例的己完成封胶工艺的 LED灯条的平 面示意图, 其中显示了位于 LED灯条一端的防水胶压头。
图 4是根据本发明另一实施例的已完成封胶工艺的 LED灯条的 横截面示意图,清楚地显示了用于 LED灯条的全防水灌胶套管以及同 时被固定封胶于全防水灌胶套管中的两条加强线, 其中, 该两条加强 线位于 LED灯条的与 LED发光方向相反的一侧以避免阻挡 LED出 光。
具体实施方式
下面将对本发明一种 LED灯条的封胶方法的具体实施例进行更 详细的描述。
但是, 本领域技术人员应当理解, 以下所述仅是举例说明和描述 一些优选实施方式, 其它一些类似的或等同的实施方式同样也可以用 来实施本发明。
在本发明中, "LED灯条"应作宽泛意义上的理解,不仅包括 LED 软性灯条, 即在柔性线路板 (FPC)安装 LED的灯条, 而且还包括 LED 硬灯条, 即在 PCB电路板 (业内又称"硬板"或"刚性线路板")上安装 LED的灯条; 不仅包括单面线路板上安装 LED的灯条主体, 而且还 包括双面线路板或多层线路板上安装 LED的灯条主体,等等。这些都 属于本发明的范围。
根据本发明的 LED灯条主体的一具体实施例, LED灯条主体是 LED单面线路板, 直接采用三条金属导线, 优选是扁平的金属导线, 例如铜导线, 铝导线, 铝合金导线, 铜合金导线, 镍包铝导线, 镍包 铁导线等等, 来制作 LED单面柔性线路板。这样, 就简化了线路板的 结构、 制作工艺, 降低了工艺成本和原材料成本, 而且降低了环境污 染和能耗。而且,这样制作的 LED单面柔性线路板还能够提高产品良 品率, 提高产品的可靠性。
根据本发明的 LED灯条主体的一方面, 设计一种用三条导线制 作的 LED单面线路板来提供 LED灯条, 包括: 三条并置排列但彼此 间隔开的金属导线, 包括位于所述 LED单面线路板中间的第三导线, 以及分别位于所述第三导线两侧且分别与所述第三导线沿所述 LED 单面线路板的纵向间隔开的第一导线和第二导线;覆盖在所述 LED单 面线路板的正面上的正面覆盖膜, 在所述正面覆盖膜上具有多个开 孔, 以暴露出所述 LED单面线路板上的相应焊盘;和覆盖在所述线路 板的反面上的反面覆盖膜, 其中, 直接由所述第三导线制作所述 LED 单面线路板的包含两个以上中间线路段的中间 LED线路,在相邻的中 间线路段之间通过切口而形成中间 LED线路的断开。
本领域的普通技术人员可以理解, 上述第一导线和第二导线可充 当 LED工作线路,即第三导线的公共主导线,主要是用于在工作时负 载大量的工作电流。 但是, 本领域技术人员可以理解, 其作用并不仅 限于负载电流, 例如可以散热, 提高可靠性, 等等。 可不对第一和第 二公共主导线进行任何切割加工, 因此它们是连续不间断的长度。
根据本发明的 LED灯条主体的一优选实施例, 所述中间 LED线 路上焊有 LED, 并且所述 LED单面线路板和含上的 LED经过灌胶处 理而形成灌封的防水 LED线路板。
根据本发明的 LED灯条主体的另一优选实施例, 所述三条并置 的金属导线是彼此平行的三条金属导线。
根据本发明的 LED灯条主体的另一优选实施例, 所述第一导线 和第二导线是连续不间断长度的金属导线。
根据本发明的 LED灯条主体的另一优选实施例, 所述正面覆盖 膜上的多个开孔包括在所述正面覆盖膜上的对应于第一导线和中间 LED线路位置的一对或多对导通焊盘孔和 /或锡焊孔, 当在所述线路 板上贴上所述正面覆盖膜时, 所述一对或多对导通焊盘孔分别位于所 述第一导线和中间 LED线路上, 并且 /或者所述锡焊孔横跨所述第一 导线和中间 LED线路,使得在所述锡焊孔内暴露出所述第一导线和中 间 LED线路的部分线路。
根据本发明的 LED灯条主体的另一优选实施例, 所述正面覆盖 膜上的多个开孔包括位于所述正面覆盖膜上的对应于所述中间 LED 线路位置的一对或多对元件焊盘孔形式的开窗, 其中当在所述线路板 上贴上所述正面覆盖膜时, 每一对所述元件焊盘孔分别位于相邻的中 间线路段上。
根据本发明的 LED灯条主体的另一优选实施例, 所述正面覆盖 膜上的多个开孔包括一对或多对端孔形式的开窗,当在所述 LED单面 线路板上贴上所述正面覆盖膜时, 每一对所述端孔分别位于所述第一 导线和第二导线上。
根据本发明的 LED灯条主体的另一优选实施例, 所述金属导线 是扁平导线、 金属绞线或金属箔片。
根据本发明的 LED灯条主体的另一优选实施例, 所述正面覆盖 膜上的多个开孔包括一个或多个位于所述正面覆盖膜上的对应于所 述 LED单面线路板的大致中间宽度位置的锡焊孔形式的开窗。
根据本发明的 LED灯条主体的另一优选实施例, 所述正面覆盖 膜上的多个开孔包括在所述正面覆盖膜上的对应于第二导线和中间 LED线路位置的一对或多对导通焊盘孔和 /或锡焊孔, 当在所述线路 板上贴上所述正面覆盖膜时, 所述一对或多对导通焊盘孔分别位于所 述第二导线和中间 LED线路上, 并且 /或者所述锡焊孔横跨所述第二 导线和中间 LED线路,使得在所述锡焊孔内暴露出所述第二导线和中 间 LED线路的部分线路。
根据本发明的 LED灯条主体的另一优选实施例, 所述中间线路 段之间的切口是冲切、 模切或激光切割的切口。
根据本发明的 LED灯条主体的另一优选实施例, 所述 LED单面 线路板的不间断长度为 0.5-500米。
根据本发明的 LED灯条主体的另一优选实施例, 还包括安装在 所述 LED线路板上的 LED和电阻, 其中所述 LED的型号包括 335、 3528、 5050和 5060中的一种或多种,所述电阻的型号包括 0603、 0805 和 0812中的一种或多种。
根据本发明的 LED灯条主体的另一优选实施例, 所述 LED单面 线路板的宽度为 2— 50毫米。
根据本发明的 LED灯条主体的另一优选实施例, 所述 LED单面 线路板的不间断长度为 0.5-500米。
下面结合来描述本发明的优选实施方式。
根据本发明的一实施例, 准备好挤塑模具, 这种挤塑模具是业内 已知的, 不再详细赘述。
另外, 准备好用于对 LED灯条进行灌胶的防水灌胶材料以用于 挤塑工艺, 优选可采用 PVC料、 TPU料、 或是 PVC和 TPU混合料。 这类灌胶材料不仅可很好地用于挤塑成型,很好地适应 LED灯条的轮 廓, 而且还具有良好的散热性、 透光性和耐候性, 特别适合用于包裹 LED灯条, 并且可保证 LED灯条的良好透光率, 因此此类防水灌胶 材料制作的防水灌胶结构不影响 LED灯的正常工作、 发光和散热。
可以采用传统上已知的各种 LED灯条, 包括 LED柔性灯条和 LED硬灯条, 在已经完成 LED灯条的元器件 (包括 LED、 电阻等等) 安装, 例如 SMT安装之后, 将 LED灯条以一定的速度通过装有挤塑 材料的挤塑模具, 从而完成环包整个 LED灯条外表面的挤塑封胶工 艺,形成包封整个 LED灯条的全防水灌胶套管,这种全防水灌胶套管 的构造及其挤塑封胶工艺为 LED灯条提供 360°的全方位防护。 进而 起到全防水和密封的作用。
图 1显示了根据本发明一实施例的已完成封胶工艺的 LED灯条 1 的横截面示意图,清楚地显示了用于 LED灯条 1的全防水灌胶套管 2。 其中, 整个 LED灯条 1, 包括在其发光正面的 LED和其它元器件, 都被挤塑形成的全防水灌胶套管 2紧紧地包封起来。
图 2则进一步显示了图 1所示的全防水灌胶套管 2的横截面示意 图, 其中为了清楚起见去除了 LED灯条 1。在该图中清楚地显示了全 防水灌胶套管 2的构造。 其中, 该挤塑成型的全防水灌胶套管 2是一 个中空的管状结构, 形成了中空的管腔 2A。该管腔 2A的大小和形状 与 LED灯条的轮廓紧密相符, 由于全防水灌胶套管 2是挤塑成型的, 因此管腔 2A将很容易地根据所封装的 LED灯条的轮廓的不同而不 同。 此外, 全防水灌胶套管 2的主体是一个套管结构, 包括封装在 LED灯条 1正面的套管上部 2C和封装在 LED灯条 1背面的套管下部 2B。
尽管图 1所示全防水灌胶套管 2的外形是弧形的,例如套管上部 2C的横截面是弧面,但是,本领域的技术人员显然可以理解,全防水 灌胶套管 2可以根据客户或应用场合的需要制作成任何所需的形状, 例如横截面为方形, 圆形, 椭圆形, 多边形等等, 这些都属于本发明 的构思范围。
本发明还构思了 LED灯条末端与外接导线之间的接头部位的封 胶构造。 如图 3所示, 图 3是根据本发明一实施例的已完成封胶工艺 的 LED灯条 1的平面示意图, 其中显示了位于 LED灯条 1一端的防 水封胶压头 4。
在已经对 LED灯条 1进行了封胶之后, 在 LED灯条 1上已封上 了全防水灌胶套管 2。但是, 在 LED灯条 1产品的末端, 一般设有引 线焊盘, 外接导线 3从该引线焊盘上引出并用于连接至外部电源, 以 用于点亮 LED灯正常工作。该外接导线 3与 LED灯条 1产品的末端 (引 线焊盘)之间的接头部位 (如图 3中的虚线框所示)更易于渗水进去, 从 而导致 LED灯条例如无法在户外持久地正常工作。
因此, 为了在该接头部位提供更可靠的防水效果, 并且还为了进 一步提高外接导线 3与 LED灯条 1产品的末端之间的连接强度,根据 本发明,在该接头部位例如通过注塑的方式覆盖上一层防水胶压头 4, 该防水胶压头 4覆盖该接头部位, 即与该接头部位处的外接导线 3密 封结合,而且还与 LED灯条 1产品的该末端紧密密封结合,从而起到 进一步改善防水和连接强度的效果。
尽管图 3显示的是在 LED灯条一端设置该防水压头 4, 但是,本 领域技术人员显然容易理解,可以在 LED灯条的两端都设置该防水压 头, 从而确保产品的全防水性能。
下面对本发明的 LED全防水灯条挤塑(灌胶)工艺的一具体实 施方式的工艺进行更详细的描述。
所选的设备: SJ-65HY护套机、 配电柜、 被动放线架、 水槽、喷 码机、 立式牵引机、 收排线机。
所选的工具: 剪刀、 夹钳、 带表卡尺、 温度计、 天平称、 扳手。 生产前的准备工序: 生产提前一小时给 SJ-65HY挤塑机加热,加 热前首先观察电源控制柜及加热器有无异常, 加热时应先观察各加热 区开关是否关闭, 若已关闭再打开控制柜内部主电源, 然后依次打开 各加热区的电源开关, 观察各加热区的电流是否正常, 设定好各加热 区温度。
所选用的加热工艺:
根据使用材料的不同各加热区设定温度大致如下:
第一区: 150-160°C ; 第二区: 175-185°C ; 第三区: 175-185°C ; 第四区: 170-185°C ; 第五区: 166-180° (:。
放线前的准备程序, 包括: 换模具、 换滤网、 检査半成品灯条、 原材料等等。
后续工序:
在将各加热区的温度到达设定温度并保温 30分钟后, 打开 SJ-65HY挤塑机电源开关, 慢慢调整电位器的同时注意观察主机电流 表 (电流不超过 40A,若有异常请立即停机) , 调整到所需转速;
观察挤出护套料的表面是否光滑, 调整好偏心及厚度, 达到要求 后, 将主机转速降到零, 穿好牵引线;
打开立式牵引机电源, 根据所需线径的要求调整好牵引机和 SJ-65HY挤塑机的转速;
调整灯条的平整、 大小、 光洁度、 及液位等, 一切符合要求后, 在灯条上做好记号;
生产完毕后, 先依次将主机、 牵引机的转速降到零, 关闭电源, 然后打开各加热区风机为设备降温, 待设备冷却后关闭风机, 最后关 闭控制柜内总电源; 和 停机后, 将工作场地及设备清理干净, 存放好成品、 工具等。 与传统的滴胶技术相比, 根据本发明方法制作的这种 LED灯条 的防水封胶构造其防水密封性能非常好,使得封胶后的 LED灯条产品 的耐候性、工作寿命和可靠性大大提高, 而且其生产工艺简单、快速、 成本低廉, 生产效率也非常高。
根据本发明的另一优选实施方式, 为了起到增加强度的作用,在 对 LED灯条 1进行挤塑封胶的同时,将一条或多条加强线,例如钢丝、 铁丝、尼龙线, 或者其它类似的加强结构, 以与 LED灯条 1并排地延 伸但优选彼此间隔开的方式布置, 也同时挤塑模制在全防水灌胶套管 2中, 例如如图 4所示。 这样, 已经全防水灌胶处理的 LED灯条 1即 使在较长长度, 例如几十米或者甚至数百米长度的应用中, 也可具有 较高的强度, 而不会因为应用中可能存在的较大的拉力而导致其损 害。在图 4显示了根据本发明另一实施例的已完成封胶工艺的 LED灯 条的横截面示意图,清楚地显示了用于 LED灯条的全防水灌胶套管以 及同时被固定封胶于全防水灌胶套管中的两条加强线 5, 其中, 该两 条加强线 5沿着 LED灯条的长度方向延伸,位于 LED灯条 1的与 LED 发光方向相反的一侧以避免阻挡 LED灯条 1上的 LED出光。
尽管图 4所示加强线 5位于 LED灯条 1的背面 (即与出光方向 相反的一侧)且与 LED灯条 1贴近,但是, 本领域的普通技术人员可 以理解,加强线 5也可设置在其他位置,例如与 LED灯条 1隔开一定 距离,位于 LED灯条 1的侧面,并且加强线 5的数量也可以更多或更 少, 等等。
以上结合附图和具体实施例对本发明进行了详细的描述。 但是, 本领域技术人员应当理解, 以上所述仅仅是举例说明和描述一些具体 实施方式, 利用以上实施例仅用来说明本发明的技术方案, 因此对本 发明的范围, 尤其是权利要求的范围, 并不具有任何限制。 本发明的 范围由所附权利要求来限定。

Claims

权 利 要 求 书
1. 一种 LED灯条, 包括:
LED灯条主体 (1), 其中, 所述 LED灯条主体 (1)包括由三条导线 制作的 LED单面线路板, 以及安装在该 LED单面线路板上的多个 LED,所述 LED单面线路板包括:三条并置排列但彼此间隔开的金属 导线,包括位于所述 LED单面线路板中间的第三导线, 以及分别位于 所述第三导线两侧且分别与所述第三导线沿所述 LED单面线路板的 纵向间隔开的第一导线和第二导线;所述第三导线形成所述 LED单面 线路板的包含两个以上中间线路段的中间 LED线路,在相邻的中间线 路段之间通过切口而形成中间 LED线路的断开;
其中, 所述 LED灯条还包括: 挤塑环包在所述 LED灯条主体 (1) 上的全防水灌胶结构 (2)。
2. 根据权利要求 1所述的 LED灯条, 其特征在于, 所述 LED 单面线路板还包括覆盖在所述 LED单面线路板的正面上的正面覆盖 膜,在所述正面覆盖膜上设有多个开孔, 以暴露出所述 LED单面线路 板上的相应悍盘。
3. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述 LED单面线路板还包括印刷在所述 LED单面线路板的正面上的 阻焊油墨。
4. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述 LED单面线路板还包括覆盖在所述 LED单面线路板的反面上的 反面覆盖膜。
5. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述多个 LED以串联、并联、或者串联加并联组合的方式安装在中间 LED线路的多个线路段上。
6. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述三条并置的金属导线是彼此平行的三条金属导线。
7. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, LED灯条还包括连同所述 LED灯条主体 (1)通过挤塑的方式被模制在 全防水灌胶结构 (2)中的一条或者多条加强线, 例如钢丝、铁丝或者尼 龙线。
8. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述正面覆盖膜上的多个开孔包括在所述正面覆盖膜上的对应于第 一导线和中间 LED线路位置的一对或多对导通焊盘孔和 /或锡焊孔, 当在所述线路板上贴上所述正面覆盖膜时, 所述一对或多对导通焊盘 孔分别位于所述第一导线和中间 LED线路上, 并且 /或者所述锡焊孔 横跨所述第一导线和中间 LED线路,使得在所述锡焊孔内暴露出所述 第一导线和中间 LED线路的部分线路。
9. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述正面覆盖膜上的多个开孔包括位于所述正面覆盖膜上的对应于 所述中间 LED线路位置的一对或多对元件焊盘孔形式的开窗,其中当 在所述线路板上贴上所述正面覆盖膜时, 每一对所述元件焊盘孔分别 位于相邻的中间线路段上。
10. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述正面覆盖膜上的多个开孔包括一对或多对端孔形式的开窗, 当在 所述 LED单面线路板上贴上所述正面覆盖膜时,每一对所述端孔分别 位于所述第一导线和第二导线上。
11. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述金属导线是扁平导线、 金属绞线或金属箔片。
12. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述正面覆盖膜上的多个开孔包括一个或多个位于所述正面覆盖膜 上的对应于所述 LED单面线路板的大致中间宽度位置的锡焊孔形式 的开窗。
13. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述正面覆盖膜上的多个开孔包括在所述正面覆盖膜上的对应于第 二导线和中间 LED线路位置的一对或多对导通焊盘孔和 /或锡焊孔, 当在所述线路板上贴上所述正面覆盖膜时, 所述一对或多对导通焊盘 孔分别位于所述第二导线和中间 LED线路上, 并且 /或者所述锡焊孔 横跨所述第二导线和中间 LED线路,使得在所述锡焊孔内暴露出所述 第二导线和中间 LED线路的部分线路。
14. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述第一导线和第二导线是连续不间断长度的金属导线, 所述第一导 线和第二导线的长度优选在 0.5-1000米的范围内。
15. 根据权利要求 1所述的 LED灯条, 其特征在于, 所述全防 水灌胶结构 (2)是紧密包封所述 LED灯条主体 (1)的全防水灌胶套管 (2)。
16. 根据权利要求 15所述的 LED灯条, 其特征在于, 所述全防 水灌胶套管 (2)具有中空的管腔 (2A), 其中所述管腔 (2A)的形状与所述 LED灯条主体 (1)的轮廓相符。
17. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 所述全防水灌胶结构 (2)由 PVC料、 TPU料、 或 PVC与 TPU的混合 料制成。
18. 根据以上权利要求中任一项所述的 LED灯条, 其特征在于, 在所述 LED灯条主体 (1)的末端与外接导线 (3)之间的接头部位设有防 水胶压头 (4)。
19. 根据权利要求中 7所述的 LED灯条, 其特征在于, 所述加 强线设置在所述 LED灯条主体 (1)的与 LED发光方向相反的一侧。
20. 一种对 LED灯条封胶的方法, 包括:
提供 LED灯条主体 (1),其中所述 LED灯条主体 (1)包括由三条导 线制作的 LED单面线路板, 以及安装在该 LED单面线路板上的多个 LED,所述 LED单面线路板包括:三条并置排列但彼此间隔开的金属 导线,包括位于所述 LED单面线路板中间的第三导线, 以及分别位于 所述第三导线两侧且分别与所述第三导线沿所述 LED单面线路板的 纵向间隔开的第一导线和第二导线;所述第三导线形成所述 LED单面 线路板的包含两个以上中间线路段的中间 LED线路,在相邻的中间线 路段之间通过切口而形成中间 LED线路的断开;
其中, 所述方法还包括:
通过挤塑工艺,将封胶材料挤塑模制在所述 LED灯条主体 (1)上, 而形成环包所述 LED灯条主体 (1)的全防水灌胶结构 (2)。
21. 根据权利要求 20所述的方法, 其特征在于, 将所述全防水 灌胶结构 (2)通过挤塑模制制作成紧密包封所述 LED灯条主体 (1)的全 防水灌胶套管 (2)。
22. 根据权利要求 20所述的方法, 其特征在于, 将所述全防水 灌胶套管 (2)成形为具有中空的管腔 (2A), 其中所述管腔 (2A)的形状与 所述 LED灯条主体 (1)的轮廓相符。
23. 根据以上权利要求中任一项所述的方法, 其特征在于, 所述 封胶材料是 PVC料、 TPU料、 或 PVC与 TPU的混合料。
24. 根据以上权利要求中任一项所述的方法, 其特征在于, 在所 述 LED灯条主体 (1)的末端与外接导线 (3)之间的接头部位通过注塑的 方式设置防水胶压头 (4)。
25. 根据以上权利要求中任一项所述的方法, 其特征在于, 在进 行所述挤塑模制的同时, 将一条或多条加强线也模制在所述全防水灌 胶结构 (2)中, 用于加强所述 LED灯条。
26. 根据权利要求 25所述的方法, 其特征在于, 所述加强线是 钢丝、 铁丝或者尼龙线。
27. 根据权利要求 25或 26所述的方法, 其特征在于, 所述加强 线以与所述 LED灯条主体 (1)间隔开的方式被挤塑模制在所述全防水 灌胶结构 (2)中。
28. 根据根据权利要求 25或 26所述的方法, 其特征在于, 将所 述加强线设置在所述 LED灯条主体 (1)的与 LED发光方向相反的一 侧。
PCT/CN2013/000585 2013-05-16 2013-05-16 带有全防水灌胶结构的led灯条及制作方法 WO2014183231A1 (zh)

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