CN217899615U - Four-wire LED lamp strip capable of being cut randomly - Google Patents

Abstract

The utility model discloses a four-wire LED lamp belt capable of being cut arbitrarily, which comprises a wiring circuit board, and comprises four wires arranged side by side, wherein a space is arranged between each wire and the corresponding wire, the wires are sequentially an A wire, a B wire, a C wire and a D wire along the width direction of the circuit board, a plurality of welding pad groups are arranged on the wires, a resistor is welded on the first welding pad group, and the resistor stretches across the A wire and the B wire; LED lamp beads are welded on the second pad group and arranged across the line B and the line C; the third pad group is used for conducting the C line and the D line; and the bonding pads of the fourth bonding pad group are arranged on the line A and the line D and are used for connecting the external power supply of the lamp strip or used for combination and interconnection after being cut. The utility model discloses simple structure is compact, uses the winding displacement circuit board to replace traditional flexible line way board or PCB hardboard, great reduction the cost of manufacture in LED lamp area, and the positive overall arrangement of lamp area is relatively more symmetrical, has taken into account the lamp area outward appearance simultaneously, accepts for general consumer easily.

Description

Four-wire LED lamp strip capable of being cut randomly

Technical Field

The utility model relates to a LED lamp area, concretely relates to cut four-wire LED lamp area wantonly.

Background

The LED strip is so named because its product shape is like a strip. The LED lamp belt has long service life (generally, the normal service life is 8-10 ten thousand hours), is energy-saving and environment-friendly, and gradually exposes the head in various decoration industries.

The traditional LED light strip is formed by assembling LEDs on a strip-shaped FPC (flexible printed circuit board) or a PCB rigid board, and when the LED light strip is manufactured, a physical or chemical method is required to form a circuit on a copper layer, for example, the circuit can be manufactured by electroplating, etching, die cutting, laser engraving, and other processes to obtain a circuit board, and then LED lamp beads, resistors, and other elements are soldered on the circuit board.

For the LED lamp strip, the market development is quite mature, the sensitivity of consumers to the product price is high, the appearance requirement of the product is also high, and the good aesthetic measure of the LED lamp strip is ensured while the manufacturing cost is reduced, so that the good market competitiveness and the economic value of the LED lamp strip product and related enterprises can be brought.

For this reason, there is a need for improvements and optimizations to existing LED strips.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an arbitrarily cut four-wire LED lamp area, simple structure is compact, uses the winding displacement circuit board to replace traditional flexible line way board or PCB hardboard, great reduction the cost of manufacture in LED lamp area, and the positive overall arrangement of lamp area is relatively more symmetrical, has taken into account the lamp area outward appearance simultaneously, accepts for general consumer easily.

An embodiment of the utility model provides a cut four-wire LED lamp area wantonly, include:

the winding displacement circuit board includes four wires that set up side by side, has the interval between wire and the wire at a distance, wire circuit board width direction along the wire is A line, B line, C line and D line in proper order, be provided with a plurality of pad groups on the wire, the pad group includes:

the first pad group is welded with a resistor, pads of the first pad group are arranged on the line A and the line B, and the resistor is arranged across the line A and the line B and is electrically connected with the line A and the line B;

the LED lamp beads are welded on the second bonding pad group, the bonding pads of the second bonding pad group are arranged on the line B and the line C, and the LED lamp beads cross the line B and the line C and are electrically connected with the line B and the line C;

the third pad group is used for conducting a C line and a D line, pads of the third pad group are arranged on the C line and the D line, a conductive medium is arranged on the third pad group, and the C line and the D line are conducted through the conductive medium;

and the fourth bonding pad group is used for connecting an external power supply of the lamp strip or for combining and interconnecting the lamp strip after being cut, the bonding pads of the fourth bonding pad group are arranged on the line A and the line D, and the lamp strip can be cut at will at the position of the fourth bonding pad group without the resistor and the LED lamp beads.

Preferably, the second pad group and the third pad group are overlapped with the pads on the C line, and the leg of the LED lamp bead is welded to the B line pad, the C line pad of the second pad group and the D line pad of the third pad group at the same time, so as to achieve connection and conduction of the C line and the D line; or the bonding pads of the second bonding pad group and the third bonding pad group on the C line are arranged in a staggered manner, and the bonding pads of the third bonding pad group are provided with tin or conductive adhesive to realize the connection and conduction of the C line and the D line; or the welding pads on the C line of the second welding pad group and the third welding pad group are partially overlapped and partially staggered, the C line and the D line at the overlapped positions are connected and conducted through welding pins of the LED lamp beads, and the C line and the D line at the staggered positions are connected and conducted through tin or conductive adhesive.

Preferably, the C-line pad of the second pad group is arranged on the side close to the D-line, and the D-line pad of the third pad group is arranged on the side close to the C-line, so that the legs of the LED lamp beads are conveniently welded on the C-line pad of the second pad group and the D-line pad of the third pad group at the same time, and the connection and conduction of the C-line and the D-line are realized.

Preferably, the fourth pad group further comprises a cutting position pad arranged on the line B, and the cutting position pad is used for welding and conducting the line B of the short lamp strip when the cut short lamp strip is assembled into the long lamp strip.

Preferably, the length of the bonding pad of the fourth bonding pad group is longer than the length of the bonding pad of the first bonding pad group, the second bonding pad group and the third bonding pad group.

Preferably, the bonding pads of the first bonding pad group are circular, oval or square.

Preferably, the resistors are connected in parallel to form a resistor parallel unit, the LED lamp beads are connected in parallel to form an LED lamp bead parallel unit, and the resistor parallel unit and the LED lamp bead parallel unit are connected in series through the B line.

Preferably, the number of the LED lamp beads is larger than that of the resistors, a second bonding pad group is arranged between every two adjacent fourth bonding pad groups, the LED lamp beads are welded on the second bonding pad group, a first bonding pad group is partially arranged between every two adjacent fourth bonding pad groups, and the resistors are welded on the first bonding pad group.

Preferably, the number ratio of the LED lamp beads to the resistors is that the LED lamp beads: the resistance is more than or equal to 3: 1.

Preferably, the upper surface and the lower surface of each wire are coated with a covering film, and the covering films simultaneously insulate and separate two adjacent wires.

Preferably, the number of the first pad group, the second pad group, the third pad group and the fourth pad group is more than 2.

The utility model discloses cut four-wire LED lamp area wantonly has one of following beneficial effect at least: the flat cable circuit board (commonly called FFC) is manufactured by four wires arranged side by side, the mode that a flexible circuit board and a PCB hard board are used for manufacturing an LED lamp strip circuit board in the traditional technology is abandoned, the flat cable manufacturing technology is mature and low in cost, the flat cable is used as a circuit, the circuit structure is simplified, the manufacturing is simple, the circuit structure is simplified, a production line can be used for full automation, the production efficiency is high, the manufacturing cost of the LED lamp strip is effectively reduced, in addition, lower-cost wires such as copper-clad aluminum and the like can be used for replacing common copper foil raw materials in the prior art, and the manufacturing cost is further reduced; through be provided with four kinds of pad groups on the wire, be used for welding resistance respectively, the LED lamp area, be used for switching on the C line, the D line, and be used for external power supply in lamp area or be used for cutting off the back combination interconnection and use, make the lamp area all have the circuit in the width direction left and right sides, avoid LED lamp pearl, component such as resistance is on one side of lamp area partially, also make the lamp area both sides all have the pad of fourth pad group, form comparatively symmetrical overall arrangement, the outward appearance in LED lamp area has obviously been improved, the whole outward appearance in the LED lamp area that obtains from this is not upper and lower with the LED lamp area that uses flexible line way board or PCB hardboard to make in the traditional technology, moreover, the steam generator is simple and compact in structure, the cost of manufacture and the aesthetic property have been taken into account simultaneously, be favorable to improving the market competitiveness of product.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1-1 to fig. 1-8 are schematic diagrams of relevant structures of pad overlapping embodiments in which the second pad group and the third pad group are located on the C line, specifically:

FIG. 1-1 is a schematic plan view of a front cover film (with a solder pad window);

FIGS. 1-2 are schematic structural views of a wire arrangement;

FIGS. 1-3 are enlarged partial views of a of FIGS. 1-2;

FIGS. 1-4 are schematic plan views of the backside cover film;

FIGS. 1-5 are schematic plan views of the wire bonded to the cover film (the wire is shown in phantom);

fig. 1-6 are schematic diagrams of a planar structure of an LED strip with an LED bead and a resistor attached thereto (the wires are shown by dashed lines);

FIGS. 1-7 are enlarged partial views of b of FIGS. 1-6;

fig. 1-8 are enlarged partial cross-sectional views of an LED strip at the location of an LED bead;

fig. 2-1 to fig. 2-5 are schematic structural diagrams of the pad dislocation embodiments in which the second pad group and the third pad group are located on the C line, specifically:

FIG. 2-1 is a schematic plan view of the front cover film (with solder pad window);

FIG. 2-2 is a schematic plan view of a wire bonded to a coverlay film (the wire is shown in phantom);

fig. 2-3 are schematic plane structures of the LED strip with the LED beads and the resistor attached thereto (the wires are shown by dotted lines);

FIGS. 2-4 are enlarged partial views of c of FIGS. 2-3;

2-5 are enlarged partial cross-sectional views of the LED strip at the location of the LED bead;

fig. 3 is a schematic plan structure diagram of the LED strip.

The LED lamp strip is manufactured in a whole plate mode when being manufactured, and the LED lamp strip is cut into the lamp strip after being manufactured, so that the structure of the embodiment shown in the attached drawings 1-5 and 2-2 comprises 3 lamp strip circuit boards, and the LED lamp strip can be cut into 3 LED lamp strips after being attached with components.

Reference numerals

Line A-A; line B-B; line C-C, line D-D;

a first pad group-100; resistance-200; a second padset-300; LED lamp bead-400; a third pad group-500; conductive medium-600; a fourth pad set-700; front cover film-810; the back side covers film-820.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the orientation or positional relationship indicated above, below, front, back, left, right, inside, outside, etc., is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, assembly, cooperation, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the meaning of the above words in the present invention by combining the specific contents of the technical solution.

The following provides many different embodiments or examples for implementing the inventive arrangements.

The utility model discloses cut four-wire LED lamp area wantonly, as shown in fig. 1-1 to fig. 3, include: the winding displacement circuit board in winding displacement circuit board, every winding displacement circuit board in lamp area include four wires that set up side by side, and it has the interval to leave between wire and the wire, the wire is A line, B line, C line and D line along circuit board width direction in proper order, be provided with a plurality of pad groups on the wire, the pad group includes: the resistor 200 is welded on the first pad group 100, pads of the first pad group 100 are arranged on the line A and the line B, each first pad group 100 is provided with 2 pads to respectively correspond to the anode and the cathode of the resistor 200, and the resistor 200 crosses the line A and the line B and is electrically connected with the line A and the line B; the second pad group 300, the LED lamp beads 400 are welded on the second pad group 300, the pads of the second pad group 300 are arranged on the line B and the line C, each second pad group 300 has 2 pads to respectively correspond to the anode and the cathode of the LED lamp beads 400, and the LED lamp beads 400 cross the line B and the line C and are electrically connected with the line B and the line C; a third pad group 500 for conducting a C line and a D line, wherein a pad of the third pad group 500 is disposed on the C line and the D line, a conductive medium 600 is disposed on the third pad group 500, and the C line and the D line are conducted through the conductive medium 600; the fourth pad group 700 is used for external power supply of the lamp strip or for combined and interconnected use after being cut, pads of the fourth pad group 700 are arranged on the line a and the line D, wherein the fourth pad group 700 positioned at the end part of the LED lamp strip can be used for the positive and negative electrodes of the external power supply, so that the LED lamp strip is electrified, the fourth pad group 700 positioned in the middle (non-end part) of the LED lamp strip can be used as a cutting position, and the lamp strip can be cut at will at the position of the fourth pad group 700 without the resistor and the LED lamp bead to obtain the required length of the LED lamp strip; the fourth pad group 700, the resistor and the LED lamp beads can be arranged just opposite to each other in the width direction of the lamp strip and can also be arranged in a staggered mode, and the condition that the lamp strip is cut at any position of the fourth pad group 700 without the resistor and the LED lamp beads means that when the LED lamp strip is cut, the LED lamp beads and the resistor are avoided by the scissors.

In some embodiments of the present invention, as shown in fig. 1-5 to fig. 1-8, the second pad group 300 and the third pad group 500 are located on the pad overlapping on the C line, the leg of the LED lamp bead 400 is welded on the pad of the B line of the second pad group 300, the pad of the C line and the pad of the D line of the third pad group 500 at the same time, so as to realize the connection and conduction between the C line and the D line, that is, the pad on the C line is used as both the pad of the second pad group 300 and the pad of the third pad group 500, when the LED lamp bead 400 is welded on the second pad group 300, one of the legs of the LED lamp bead 400 is welded on the pad of the C line and the pad of the D line through solder paste, so as to connect the C line and the D line, so as to connect the current on the D line (power main line, which may be an anode main line or a cathode main line); in other embodiments, as shown in fig. 2-1 to fig. 2-5, pads of the second pad group 300 and the third pad group 500 on the C line are arranged in a staggered manner, and a pad of the third pad group 500 is provided with tin or conductive paste (i.e., a conductive medium 600), so that the C line and the D line are connected and conducted; in other embodiments, the pads of the second pad group 300 and the third pad group 500 on the C line are partially overlapped and partially staggered, the C line and the D line at the overlapped position are connected and conducted through the leg of the LED lamp bead 400, and the C line and the D line at the staggered position are connected and conducted through tin or conductive adhesive.

The utility model discloses an in some embodiments, the C line pad of second pad group 300 sets up in the side that is close to the D line, the D line pad of third pad group 500 sets up in the side that is close to the C line to make things convenient for the leg of a welding of LED lamp pearl 400 to weld simultaneously on the C line pad of second pad group 300, the D line pad of third pad group 500, realize that the connection of C line, D line switches on.

In some embodiments of the present invention, the fourth pad group 700 further includes a shearing position pad (not drawing and displaying) disposed on the B line, for welding the B line of the short lamp strip to be conducted when the short lamp strip after shearing is assembled into the long lamp strip. After the LED lamp strip is cut short, a user needs to lengthen the LED lamp strip for use under certain conditions, the cut short lamp strip can be used for welding the fourth pad group 700 at the end part of the LED lamp strip in a tin soldering mode, and the shear position pads on the B line are also soldered together, so that the lengthened LED lamp strip forms a circuit path. The positions of the scissor position bonding pads correspond to the bonding pads of the fourth bonding pad group 700, and when the fourth bonding pad group 700 is sheared, the scissor divides the scissor position bonding pads into two parts.

The utility model discloses an in some embodiments, the pad length of fourth padgroup 700 is longer than the pad length of first padgroup 100, second padgroup 300, third padgroup 500 to convenient the shearing, and ensure on the short lamp area after the shearing, the pad of fourth padgroup 700 has sufficient length and comes external power supply, guarantees the reliability of electric connection.

In some embodiments of the present invention, the pads of the first pad set 100 are circular, oval or square to meet the requirement of fillet welding of the resistor 200.

The utility model discloses an in some embodiments, parallelly connected formation resistance parallel unit between resistance 200, parallelly connected formation LED lamp pearl parallel unit between LED lamp pearl 400, pass through between resistance parallel unit and the parallelly connected unit of LED lamp pearl B line series connection, this kind of circuit mode makes partial resistance or LED lamp pearl trouble, does not influence the normal work of other resistance, LED lamp pearl.

The utility model discloses an in some embodiments, the quantity of LED lamp pearl 400 is greater than the quantity of resistance 200 all is provided with second pad group 300 between two adjacent fourth pad group 700, and the welding has on the second pad group 300 LED lamp pearl to realize that a lamp is cut, between two adjacent fourth pad groups 700, the part is provided with first pad group 100, and the welding has on the first pad group 100 resistance 200, the cost of manufacture in LED lamp area can effectively be reduced to less resistance quantity, also makes and to lay out more LED lamp pearls on the LED lamp area of unit length, and is preferred, LED lamp pearl 400 with the quantity ratio of resistance 200 is LED lamp pearl: the resistance is more than or equal to 3: 1.

The utility model discloses an in some embodiments, the upper and lower surface of wire all cladding has the cover membrane, cover membrane 810 and back cover membrane 820 including the front, cover membrane 8 simultaneously with double-phase adjacent wire insulation separate for uncontrollable contact short circuit can not appear between the adjacent wire, improves the quality and the reliability in LED lamp area.

According to the needs of LED lamp area length the utility model discloses an in some embodiments, the group number of first pad group 100, second pad group 300, third pad group 500, fourth pad group 700 is more than 2 groups to make into the lamp strip book with LED lamp area, the user is sheared the use by oneself as required.

The embodiment of the utility model provides a through utilizing four wires that set up side by side to make and obtain the winding displacement circuit board (commonly known as FFC), abandoned the mode that uses flexible line way board and PCB hard board to make the circuit board of LED lamp area in the traditional art, the winding displacement preparation technique is mature and low cost, utilizes the winding displacement to simplify circuit structure as the circuit yet, and simple manufacture has simplified circuit structure, can use a production line full automatization, and production efficiency is high, has effectively reduced the cost of manufacture of LED lamp area, and, can use the lower cost wire of copper clad aluminium etc. to replace the copper foil raw materials commonly used in the prior art, has further reduced the cost of manufacture; through be provided with four kinds of pad groups on the wire, be used for welding resistance respectively, the LED lamp area, be used for switching on the C line, the D line, and be used for external power supply in lamp area or be used for cutting off the back combination interconnection and use, make the lamp area all have the circuit in the width direction left and right sides, avoid LED lamp pearl, component such as resistance is on one side of lamp area partially, also make the lamp area both sides all have the pad of fourth pad group, form comparatively symmetrical overall arrangement, the outward appearance in LED lamp area has obviously been improved, the whole outward appearance in the LED lamp area that obtains from this is not upper and lower with the LED lamp area that uses flexible line way board or PCB hardboard to make in the traditional technology, moreover, the steam generator is simple and compact in structure, the cost of manufacture and the aesthetic property have been taken into account simultaneously, be favorable to improving the market competitiveness of product.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (11)

1. The utility model provides a cut four-wire LED lamp area wantonly, its characterized in that includes:

the winding displacement circuit board includes four wires that set up side by side, has the interval between wire and the wire at a distance, wire circuit board width direction along the wire is A line, B line, C line and D line in proper order, be provided with a plurality of pad groups on the wire, the pad group includes:

the first welding pad group is welded with a resistor, the welding pads of the first welding pad group are arranged on the line A and the line B, and the resistor is arranged across the line A and the line B and is electrically connected with the line A and the line B;

the LED lamp beads are welded on the second bonding pad group, bonding pads of the second bonding pad group are arranged on the line B and the line C, and the LED lamp beads cross the line B and the line C and are electrically connected with the line B and the line C;

the third pad group is used for conducting a C line and a D line, pads of the third pad group are arranged on the C line and the D line, a conductive medium is arranged on the third pad group, and the C line and the D line are conducted through the conductive medium;

and the fourth pad group is used for connecting an external power supply of the lamp strip or combining and interconnecting the lamp strip after being cut, pads of the fourth pad group are arranged on the line A and the line D, and the lamp strip can be cut at will at the position of the fourth pad group without the resistor and the LED lamp beads.

2. The random cut four-wire LED strip of claim 1, wherein: the second pad group and the third pad group are positioned on the pads on the C line and overlapped, and the welding feet of the LED lamp beads are welded on the B line pad, the C line pad and the D line pad of the third pad group at the same time, so that the connection and conduction of the C line and the D line are realized; or the bonding pads of the second bonding pad group and the third bonding pad group on the C line are arranged in a staggered manner, and the bonding pads of the third bonding pad group are provided with tin or conductive adhesive to realize the connection and conduction of the C line and the D line; or the welding pads on the C line of the second welding pad group and the third welding pad group are partially overlapped and partially staggered, the C line and the D line at the overlapped positions are connected and conducted through welding pins of the LED lamp beads, and the C line and the D line at the staggered positions are connected and conducted through tin or conductive adhesive.

3. A randomly cut four-wire LED strip according to claim 2, wherein: the C line bonding pad of the second bonding pad group is arranged on the side close to the D line, and the D line bonding pad of the third bonding pad group is arranged on the side close to the C line, so that the welding feet of the LED lamp beads are conveniently welded on the C line bonding pad of the second bonding pad group and the D line bonding pad of the third bonding pad group at the same time, and the connection and conduction of the C line and the D line are realized.

4. A randomly cut four-wire LED strip according to claim 1, characterized in that: the fourth pad group further comprises a shearing position pad arranged on the B line, and the shearing position pad is used for welding and conducting the B line of the short lamp strip when the sheared short lamp strip is assembled into the long lamp strip.

5. The random cut four-wire LED strip of claim 1, wherein: the length of the bonding pad of the fourth bonding pad group is longer than that of the first bonding pad group, the second bonding pad group and the third bonding pad group.

6. The random cut four-wire LED strip of claim 5, wherein: the bonding pads of the first bonding pad group are circular, oval or square.

7. An arbitrary cut-through four-wire LED strip according to any one of claims 1 to 6, wherein: the LED lamp is characterized in that resistors are connected in parallel to form a resistor parallel unit, LED lamp beads are connected in parallel to form an LED lamp bead parallel unit, and the resistor parallel unit and the LED lamp bead parallel unit are connected in series through a line B.

8. The random cut four-wire LED strip of claim 7, wherein: the number of the LED lamp beads is larger than that of the resistors, a second pad group is arranged between every two adjacent fourth pad groups, the LED lamp beads are welded on the second pad group, a first pad group is partially arranged between every two adjacent fourth pad groups, and the resistors are welded on the first pad group.

9. The arbitrarily cut four-wire LED strip of claim 8, wherein: the quantity ratio of the LED lamp beads to the resistors is that the LED lamp beads: the resistance is more than or equal to 3: 1.

10. A randomly cut four-wire LED strip according to claim 1, characterized in that: the upper surface and the lower surface of each wire are coated with a covering film, and the covering films simultaneously insulate and separate two adjacent wires.

11. The random cut four-wire LED strip of claim 1, wherein: the number of the first pad group, the second pad group, the third pad group and the fourth pad group is more than 2.

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