WO2021057320A1 - Longue bande de lampe à del à métal épais et son procédé de fabrication - Google Patents

Longue bande de lampe à del à métal épais et son procédé de fabrication 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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WO
WIPO (PCT)
Prior art keywords
circuit
layer
thick metal
circuit board
light strip
Prior art date
Application number
PCT/CN2020/109146
Other languages
English (en)
Chinese (zh)
Inventor
王定锋
徐文红
冉崇友
徐磊
琚生涛
Original Assignee
王定锋
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 王定锋 filed Critical 王定锋
Publication of WO2021057320A1 publication Critical patent/WO2021057320A1/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
    • F21S4/24—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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

L'invention concerne une longue bande de lampe à DEL à métal épais et un procédé de fabrication. Plus particulièrement, une pluralité de cartes de circuit imprimé de bande de lampe à double couche ou à trois couches sont fabriquées, la carte de circuit imprimé de bande de lampe étant une carte de circuit imprimé courte connectée et formée en connectant une pluralité de cartes de circuit imprimé de bande de lampe courte, un circuit métallique épais (2.1) est disposé sur le métal arrière de la carte de circuit imprimé, le métal arrière est exposé à deux extrémités, la carte de circuit imprimé est connectée bout à bout après que les éléments sont montés au moyen de SMT, le procédé de connexion de carte de circuit imprimé comprend les étapes consistant à faire en sorte que les métaux épais correspondant aux parties, aux extrémités, des circuits métalliques arrière (2.1) se chevauchent et se touchent ou se touchent horizontalement et s'inclinent ensemble, après qu'une électrode positive touche une électrode positive et qu'une électrode négative touche une électrode négative, le métal est soudé et connecté l'un à l'autre au moyen d'un procédé de soudage par courant ou de soudage au laser, après le soudage, les points de soudure sont complètement fondus par le métal au niveau des deux extrémités soudées pour former une conduction de connexion très ferme, au moins deux cartes de circuit imprimé avec des éléments soudés sont reliées bout à bout pour être soudées en une longue bande de lampe connectée, puis la longue bande de lampe connectée est divisée en longues bandes de lampe à DEL à métal épais uniques.
PCT/CN2020/109146 2019-09-27 2020-08-14 Longue bande de lampe à del à métal épais et son procédé de fabrication WO2021057320A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910953013.3 2019-09-27
CN201910953013.3A CN112576962A (zh) 2019-09-27 2019-09-27 一种厚金属led长灯带及制作方法

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Publication Number Publication Date
WO2021057320A1 true WO2021057320A1 (fr) 2021-04-01

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PCT/CN2020/109146 WO2021057320A1 (fr) 2019-09-27 2020-08-14 Longue bande de lampe à del à métal épais et son procédé de fabrication

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WO (1) WO2021057320A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114799388A (zh) * 2022-04-15 2022-07-29 深圳市子轩光电子科技有限公司 柔性灯带搭桥水平焊接工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6914194B2 (en) * 2003-10-29 2005-07-05 Ben Fan Flexible LED cable light
DE202005006643U1 (de) * 2005-04-26 2005-09-08 Fan, Ben, Hsitzu Flexible LED-Kabel-Beleuchtung
CN202074316U (zh) * 2010-11-10 2011-12-14 张�林 组合式led长灯带
CN204313089U (zh) * 2014-09-28 2015-05-06 王定锋 一种6vled灯珠220v高压无电阻led灯带
CN109812721A (zh) * 2017-11-21 2019-05-28 王定锋 一种led灯带及其制作方法
CN209355013U (zh) * 2019-01-21 2019-09-06 铜陵睿变电路科技有限公司 一种三条导线制成的led灯串

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6914194B2 (en) * 2003-10-29 2005-07-05 Ben Fan Flexible LED cable light
DE202005006643U1 (de) * 2005-04-26 2005-09-08 Fan, Ben, Hsitzu Flexible LED-Kabel-Beleuchtung
CN202074316U (zh) * 2010-11-10 2011-12-14 张�林 组合式led长灯带
CN204313089U (zh) * 2014-09-28 2015-05-06 王定锋 一种6vled灯珠220v高压无电阻led灯带
CN109812721A (zh) * 2017-11-21 2019-05-28 王定锋 一种led灯带及其制作方法
CN209355013U (zh) * 2019-01-21 2019-09-06 铜陵睿变电路科技有限公司 一种三条导线制成的led灯串

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