WO2021057320A1 - 一种厚金属led长灯带及制作方法 - Google Patents

一种厚金属led长灯带及制作方法 Download PDF

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Publication number
WO2021057320A1
WO2021057320A1 PCT/CN2020/109146 CN2020109146W WO2021057320A1 WO 2021057320 A1 WO2021057320 A1 WO 2021057320A1 CN 2020109146 W CN2020109146 W CN 2020109146W WO 2021057320 A1 WO2021057320 A1 WO 2021057320A1
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Prior art keywords
circuit
layer
thick metal
circuit board
light strip
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PCT/CN2020/109146
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English (en)
French (fr)
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王定锋
徐文红
冉崇友
徐磊
琚生涛
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王定锋
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Publication of WO2021057320A1 publication Critical patent/WO2021057320A1/zh

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    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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 invention relates to the field of LED light strips, in particular to a thick metal LED long light strip and a manufacturing method.
  • LED long light strips usually require a large current carrying capacity.
  • the existing long LED light strips on the market now use soldering and soldering of multiple LED short light strips to connect the long light strips, in order to ensure the carrying capacity.
  • two or more wires must be welded on the back to make a long LED light strip.
  • the disadvantage of this long LED light strip is that it is soldered, twisted and easily broken, and the wires are not fixed and the layout is messy. , Not only brings troubles to the process during the welding process, low efficiency and high cost, but also brings a series of problems in the application of the final product, such as scattered wiring, easy short-circuit, and unsafe.
  • the present invention adopts a double-layer or three-layer circuit board, the back side uses a thick metal circuit to ensure the large current carrying capacity, and it is fixed on the circuit board, and at the same time solves the problem of the traditional LED long light strip wiring scattered and easy.
  • Short circuit, unsafe problem in the position that needs to be connected, solder paste is printed on the through hole when SMT is attached to the component, and reflow soldering is used to solder and conduct multiple locations that need to be connected at the same time, which greatly improves the efficiency ,
  • the back metal is exposed at both ends.
  • the back metal lines of the circuit board are overlapped or flatly touched together.
  • the invention relates to a thick metal LED long light strip and a manufacturing method. Specifically, multiple double-layer or three-layer light strip circuit boards are produced.
  • the light strip circuit board is a conjoined connection of multiple short light strip circuit boards.
  • the back metal of the circuit board is a thick metal circuit, and the back metal is exposed at both ends. After SMT components are attached, the circuit board is connected end to end.
  • the method of connecting the board is to overlap the thick metal corresponding to the first and end back metal circuits. Touch together or flat touch together, the positive electrode touches the positive electrode, and the negative electrode touches the negative electrode. Use electric current welding or laser welding to connect the metals together. After welding, the welded joints are completely fused between the two ends of the welded metal. At the same time, a very strong connection is formed. At least two circuit boards with soldered components are welded end-to-end to form a long light strip that is connected to each other, and then divided into a single thick metal LED long light strip.
  • a method for manufacturing a thick metal LED long light strip is provided. Specifically, after the front single-layer circuit board is manufactured, the thick metal circuit on the back is fabricated to make a single-layer circuit board, and the two-layer circuit is aligned. Lay them together with glue to form a double-layer light strip circuit board, or first make a double-layer circuit board for the front circuit and the middle layer circuit, and then make a single-layer thick metal circuit board for the back circuit.
  • the double-layer circuit board and the back circuit are laminated together with glue to form a three-layer lamp with circuit board.
  • the double-layer or three-layer lamp with circuit board is a conjoined short circuit board with multiple short lamp and circuit boards.
  • connection point where each layer of the short circuit board needs to be connected.
  • the copper thickness of the thick metal circuit on the back of the circuit board is greater than or equal to 0.1mm, and the thick metal circuit on the back is exposed at both ends.
  • Use SMT stickers to include After the components with LED lights, the two layers of circuit boards are provided with conduction connection points.
  • the conduction connection points are also formed when SMT soldering components, so that the upper and lower two layers of circuit boards are connected and conductive, and made of thick metal LED short light strip module, connect the circuit board end to end.
  • the method of connecting the board is to overlap or touch the copper corresponding to the back copper circuit of the end to the end.
  • the positive pole touches the positive pole
  • the negative pole touches the negative pole.
  • the method of welding or laser welding is to connect the copper welding together. After welding, the two ends of the welded copper are completely fused together to form a very strong connection and conduction. Multiple circuit boards with welded components are welded end to end. The long light strips are formed into one piece, and then divided into single strips of thick metal LED long light strips.
  • a thick metal LED long light strip including: multiple double-layer or triple-layer short circuit boards; components containing LEDs soldered on the short circuit boards; connection welding between the short circuit boards Point; characterized in that the multiple double-layer or triple-layer short circuit boards, the double-layer short circuit board includes a single-layer circuit on the front and a thick metal circuit on the back, and the three-layer short circuit board includes a double-layer circuit on the front And the thick metal circuit on the back.
  • the thick metal circuit on the back is exposed at both ends to form connection solder joints.
  • the thick metal circuit on the back is a thick metal with a large current carrying capacity.
  • the metal thickness is greater than or equal to 0.1mm.
  • the front When it is a double-layer circuit, the front The conduction between the single-layer circuit and the thick metal circuit on the back is conducted by soldering.
  • the conduction of the double-layer circuit on the front and the thick metal circuit on the back is conducted by soldering.
  • a short circuit board containing LED components is connected end-to-end to form a long light strip.
  • the end-to-end connection is the connection formed by the thick metal of the end-to-end fusion welding together, and the end-to-end thick metal is overlapped or flat.
  • the positive electrode is connected to the positive electrode, and the negative electrode is connected to the negative electrode.
  • the thick metal self-welding connection is a very firm connection.
  • the long light strip is a thick metal LED long light strip formed by solid welding connection from end to end.
  • the thick metal LED long light strip is characterized in that the thick metal is copper or aluminum or copper-aluminum clad metal or copper-aluminum mixed metal
  • Fig. 1 is a schematic plan view of a front circuit board, which is a single-layer circuit board or a double-layer circuit board, and a through hole is provided on the front circuit board.
  • Figure 2 is a schematic plan view of a thick metal circuit on the back.
  • Figure 3 shows that the front circuit board and the back thick metal circuit are laminated together with glue.
  • the back thick metal circuit is exposed from the hole at the via hole.
  • the thick metal circuit on the back is exposed at both ends to form connection solder joints, forming a connection
  • Figure 4 is a schematic plan view of the LED components after SMT soldering on the conjoined short light strip circuit board.
  • Figure 5 is a schematic plan view of a connected short light strip circuit board containing LED components after multiple posts are welded, and the first and last connection solder joints are welded together by cold welding.
  • Fig. 6 is a schematic plan view of the thick metal LED long strip after being cut into single strips.
  • the single-sided flexible copper clad board is screen-printed with anti-corrosion ink, baked, cured, etched, and film-removed to make the front line, and then tested, and the cover film with the window is aligned and pressed on the front
  • the resistance pad 1.1a and the LED lamp pad 1.1b are exposed, the back side is coated with glue, printed characters, and then the via hole 1.2a is punched out with a mold.
  • the hole edge of the via hole 1.2a has the front circuit pad exposed 1.3a, make the front single-layer circuit board 1 as shown in Fig. 1.
  • the mark 1 in Fig. 1 indicates that it is a single-layer circuit board.
  • the double-sided flexible copper clad laminate is drilled, immersed, copper plated, dried film, exposed, etched, and filmed to make a front double-layer circuit, and then tested, and the cover film with the window is aligned.
  • the via hole 1.2a is punched out, and the side of the via hole 1.2a has an exposed front circuit pad 1.3a, which is made into a front double-layer circuit board 1 as shown in Fig. 1.
  • Mark 1 indicates that it is a double-layer circuit board.
  • the 0.15mm thick copper plate is cut into a width of 250mm and a length of 510mm, and then is pressed together with a 250mm wide and 500mm long cover film 2.2 to make a single-sided copper clad laminate. Etch the ink, bake and cure, etch, remove the film, and make a thick metal circuit 2.1. The thick metal circuit 2.1 is exposed at both ends of the cover film 2.2 (as shown in Figure 2)
  • the thick metal circuit 2.1 is exposed from the hole at 1.2a of the via hole, and the front circuit pad 1.3a is exposed on the side of the via hole 1.2a, and the thick metal circuit 2.1 is in the The two ends are exposed to form the connecting solder joint 2.1a, which is baked for 90 minutes at a temperature of 150 degrees in an oven, the glue is baked and cured, and then the surface of the solder joint is anti-oxidized through OSP to make a short light strip circuit board (As shown in Figure 3).
  • the solder paste is printed on the LED lamp bead pad 1.1b and the resistance pad 1.1a of the short light strip circuit board with a stencil, and at the same time in the via hole 1.2a Print on the solder paste, and then use the SMT placement machine to respectively mount the LED lamp beads 3.1 and resistor 3.2 to the solder paste printed pads, solder through a reflow soldering machine, and solder the lamp beads 3.1 and resistor 3.2 to the short
  • the solder paste printed on the through hole 1.2a connects the thick metal on the back and the front line through soldering and connection to make multiple connected short light strips (as shown in Figure 4), and then connect the two
  • the connecting solder joints 2.1a at the beginning and the end of the Zhang Siamese short light strip are stacked together, the positive electrode touches the positive electrode, and the negative electrode touches the negative electrode, and then welded with a cold welder to weld the overlapping connection solder joints

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  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

一种厚金属LED长灯带及制作方法，具体而言，制作多张双层或者三层的灯带线路板，此灯带线路板是多条短灯带线路板连体的连体短线路板，线路板的背面金属是厚金属线路(2.1)，背面金属在两端露出，SMT贴元件后，将线路板首尾相接，接板方法是，将首尾的背面金属线路(2.1)对应的厚金属重叠碰在一起或者平碰靠在一起，正极碰正极，负极碰负极后，用电流焊或激光焊的方法，将金属焊接连接在一起，焊接后焊接点是被焊接的两端金属完全融合在了一起，形成非常牢固的连接导通，至少两张以上的焊了元件的线路板首尾相连焊成连体的长灯带，然后分条制成单条的厚金属LED长灯带。

Description

一种厚金属LED长灯带及制作方法 技术领域
本发明涉及LED灯带领域，具体涉及一种厚金属LED长灯带及制作方法。
背景技术
LED长灯带，通常都要求需要很大的载流量，而现在市面上已有的LED长灯带，是采取将多个LED短灯带首尾用锡焊焊接连接成长灯带后，为了保证载流量的需求，还要在背面再焊上两根或多根导线，制成LED长灯带，此种LED长灯带的缺点是用焊锡焊接，扭曲易折断，加之导线没有被固定，布置凌乱，不仅在焊接过程中给工艺带来困扰，效率低，成本高，而且在最终产品应用时也会带来一系列的问题，例如布线散乱易短路，不安全。
为了克服以上的缺陷和不足，本发明采用双层或三层线路板，背面用厚金属线路保证大载流量的需求，又被固定在线路板上，同时解决了传统LED长灯带布线散乱易短路，不安全问题，在需要导通的位置，在SMT贴元件时，在导通孔处印上锡膏，过回流焊焊接同时将多处需要导通的位置焊接导通，大大提高了效率，背面金属在两端露出，将线路板首尾的背面金属线路对应重叠碰在一起或者平碰靠在一起，正极碰正极，负极碰负极后，用电流焊或冷焊或激光焊的方法，将首尾两端金属完全融合连接在一起，形成非常牢固的连接，解决了传统LED长灯带扭曲易折断的问题。
发明内容
本发明涉及一种厚金属LED长灯带及制作方法，具体而言，制作多张双层或者三层的灯带线路板，此灯带线路板是多条短灯带线路板连体的连体短线路板，线路板的背面金属是厚金属线路，背面金属在两端露出，SMT贴元件后，将线路板首尾相接，接板方法是，将首尾的背面金属线路对应的厚金属重叠碰在一起或者平碰靠在一起，正极碰正极，负极碰负极后，用电流焊或激光焊的方法，将金属焊接连接在一起，焊接后焊接点是被焊接的两端金属完全融合在了一起，形成非常牢固的连接导通，至少两张以上的焊了元件的线路板首尾相连焊成连体的长灯带，然后分条制成单条的厚金属LED长灯带。
根据本发明提供了一种厚金属LED长灯带的制作方法，具体而言，将正面单层线路板制作完成后，再制作背面厚金属线路也制成单层线路板，两层线路对位用胶粘合叠压在一起，形成双层灯带线路板，或者，先制作一双层线路板，用作正面线路和中间层线路，再制作一单层厚金属线路板用作背面线路，将双层线路板与背面线路对位用胶粘合叠压在一起，形成三层灯带线路板，双层或三层灯带线路板是多条短灯带线路板的连体短线路板，在短线路板上的各层线路需要导通的地方设导通连接点，线路板的背面厚金属线路的铜厚大于或等于0.1mm，背面厚金属线路在两端露出，用SMT贴包含有LED灯的元器件后，两层线路板上都设置有导通连接点，导通连接点在SMT焊接元件时也形成了焊接，使上下两层线路板形成连接导通，制成厚金属LED短灯带模组，将线路板首尾相接，接板方法是，将首尾的背面铜线路对应的铜重叠碰在一起或者平碰靠在一起，正极碰正极，负极碰负极后，用电流焊或激光焊的方法，将铜焊接连接在一起，焊接后焊接点是被焊接的两端铜完全融合在了一起，形成非常牢固的连接导通，多张焊了元件的线路板首尾相连焊成连体的长灯带，然后分条制成单条的厚金属LED长灯带。
根据本发明还提供了一种厚金属LED长灯带，包括：多条双层或者三层短线路板；焊接在短线路板上的包含有LED的元器件；短线路板之间的连接焊点；其特征在于，所述的多条双层或者三层短线路板，其双层短线路板包含正面的单层线路和背面的厚金属线路，三层短线路板包含正面的双层线路和背面的厚金属线路，背面的厚金属线路在两端露出形成连接焊点，背面厚金属线路是载流量大的厚金属，金属厚度大于或等于0.1mm，当是双层线路时，正面的单层线路和背面的厚金属线路的导通，是用焊锡导通、当是三层线路时，正面的双层线路和背面的厚金属线路的导通是用焊锡导通，由多条焊了包含有LED的元器件的短线路板，首尾相接形成长灯带，首尾相接是首尾的的厚金属自身融焊在一起形成的连接，首尾的厚金属搭碰相接或者平碰相接，正极接正极，负极接负极，这种厚金属自身融焊连接是非常牢固的连接，所述的长灯带是首尾牢固焊接连接形成的厚金属LED长灯带。
根据本发明的一优选实施例，所述的一种厚金属LED长灯带，其特征在于，所述厚金属是铜或铝或铜铝覆合金属或铜铝混和金属
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。
附图说明
通过结合以下附图阅读本说明书，本发明的特征、目的和优点将变得更加显而易见，对附图的简要说明如下。
图1为正面线路板，正面线路板是单层线路板、或者是双层线路板，在正面线路板上设置有导通孔的平面示意图。
图2为背面厚金属线路的平面示意图。
图3为正面线路板与背面厚金属线路用胶粘合叠压在一起，在导通孔处从孔中露出背面厚金属线路，背面的厚金属线路在两端露出形成连接焊点，形成连体的短灯带线路板的平面示意图。
图4为在连体的短灯带线路板上SMT贴焊包含LED元器件后的平面示意图。
图5为多张贴焊包含LED元器件后的连体的短灯带线路板，首尾的连接焊点通过冷焊融焊在一起后的平面示意图。
图6为分切成单条后的厚金属LED长灯带的平面示意图。
具体实施方式
下面将以优选实施例为例来对本发明进行详细的描述。
但是本领域技术人员应当理解，以下所述仅仅是举例说明和描述一些优选实施方式，对本发明的权利要求并不具有任何限制。
正面线路板的制作：
采用传统的线路板制作工艺，将单面柔性覆铜板经丝印线路抗蚀油墨、烘烤固化、蚀刻、退膜制作出正面线路、再测试、将开有窗口的覆盖膜对位贴压在正面线路上，露出电阻焊盘1.1a和LED灯焊盘1.1b，背面涂胶、印字符、再用模具冲切出导通孔1.2a，导通孔1.2a的孔边有露出正面线路焊盘1.3a，制作成如图1所示的正面单层线路板1，在此加工步骤中、图1中标识1表示是单层线路板。
或者是将双面柔性覆铜板经钻孔、沉铜、镀铜、贴干膜、曝光显景、蚀刻、退膜制作出正面的双层线路、再测试、将开有窗口的覆盖膜对位贴压在正面焊元件的线路上，露出电阻焊盘1.1a和LED灯焊盘1.1b，将另一覆盖膜贴压在正面双层线路的背面线路上，背面涂胶、字符，再用模具冲切出导通孔1.2a，导通孔 1.2a的孔边有露出正面线路焊盘1.3a，制作成如图1所示的正面双层线路板1，在此加工步骤中、图1中标识1表示是双层线路板。
背面厚金属线路的制作：
采用传统的线路板制作工艺，将0.15mm厚的铜板裁成宽250mm，长510mm，再与宽250mm，长500mm的覆盖膜2.2对位贴压在一起制作成单面覆铜板，经丝印线路抗蚀油墨、烘烤固化、蚀刻、退膜、制作出厚金属线路2.1，厚金属线路2.1在覆盖膜2.2的两端露出(如图2所示)
短灯带线路板的制作：
将涂胶后的正面线路板1的胶面与背面厚金属线路2.1对位贴装在一起，然后在快压机上，用150度的温度，120kg的压力参数压合，使正面线路板1与背面厚金属线路2.1牢固粘合在一起，在导通孔1.2a处厚金属线路2.1从孔中露出，导通孔1.2a的边上有露出正面线路焊盘1.3a，厚金属线路2.1在两端露出形成连接焊点2.1a，在放在烤箱中用150度的温度烘烤90分钟，将胶烘烤固化，再经过OSP对焊点进行表面防氧化处，制作成短灯带线路板(如图3所示)。
厚金属LED长灯带的制作：
采用传统的SMT贴片工艺，在锡膏印刷机上，用钢网将锡膏印在短灯带线路板的LED灯珠焊盘1.1b和电阻焊盘1.1a上，同时在导通孔1.2a上印上锡膏，然后用SMT贴片机分别将LED灯珠3.1和电阻3.2对应贴装到印了锡膏的焊盘上，过回流焊机焊接，将灯珠3.1和电阻3.2焊接到短灯带线路板上，印在导通孔1.2a上的锡膏将背面厚金属和正面线路焊接连接导通，制成多条连体的短灯带(如图4所示)，然后将两张连体的短灯带首尾的连接焊点2.1a叠碰在一起，正极碰正极，负极碰负极，再用冷焊机焊接，将叠碰在一起的连接焊点2.1a焊接融合在一起，形成牢固的焊接融合结构2.1b，这样逐一将多张连体的短灯带首尾焊接在一起，制成连体的长灯带(如图5所示)，再在分条机上分条，制成单条的厚金属LED长灯带(如图6所示)。
以上结合附图将一种厚金属LED长灯带及制作方法的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，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。

Claims (3)

  1. 一种厚金属LED长灯带的制作方法，具体而言，将正面单层线路板制作完成后，再制作背面厚金属线路也制成单层线路板，两层线路对位用胶粘合叠压在一起，形成双层灯带线路板，或者，先制作双层线路板，用作正面线路和中间层线路，再制作单层厚金属线路板用作背面线路，将双层线路板与背面线路对位用胶粘合叠压在一起，形成三层灯带线路板，双层或三层灯带线路板是多条短灯带线路板的连体短线路板，在短线路板上的各层线路需要导通的地方设导通连接点，线路板的背面厚金属线路的铜厚大于或等于0.1mm，背面厚金属线路在两端露出，用SMT贴焊包含有LED灯的元器件后，两层线路板上都设置有导通连接点，导通连接点在SMT焊接元件时也形成了焊接，使上下两层线路板形成连接导通，制成厚金属LED短灯带模组，用同样方法制作多件短灯带模组，将多件短灯带模组首尾相接，接板方法是，将多件短灯带模组首尾排列，背面铜线路对应的铜重叠碰在一起或者平碰靠在一起，正极碰正极，负极碰负极后，用电流焊或激光焊的方法，将铜焊接连接在一起，焊接后焊接点是被焊接的两端铜完全融合在了一起，形成非常牢固的连接导通，多张焊了元件的线路板首尾相连焊成连体的长灯带，然后分条制成单条的厚金属LED长灯带。
  2. 一种厚金属LED长灯带，包括：
    多条双层或者三层短线路板；
    焊接在短线路板上的包含有LED的元器件；
    短线路板之间的连接焊点；
    其特征在于，所述的多条双层或者三层短线路板，其双层短线路板包含正面的单层线路和背面的厚金属线路，三层短线路板包含正面的双层线路和背面的厚金属线路，背面的厚金属线路在两端露出形成连接焊点，背面厚金属线路是载流量大的厚金属，金属厚度大于或等于0.1mm，当是双层线路时，正面的单层线路和背面的厚金属线路的导通，是用焊锡导通，当是三层线路时，正面的双层线路和背面的厚金属线路的导通是用焊锡导通，由多条焊了包含有LED的元器件的短线路板，首尾相接形成长灯带，首尾相接是首尾的的厚金属自身融焊在一起形成的连接，首尾的厚金属搭碰相接或者平碰相接，正极接正极，负极接负极，这 种厚金属自身融焊连接是非常牢固的连接，所述的长灯带是首尾牢固焊接连接形成的厚金属LED长灯带。
  3. 根据权利要求1或2所述的一种厚金属LED长灯带，其特征在于，所述厚金属是铜或铝或铜铝覆合金属或铜铝混和金。属。
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