CN112728443B - Four-color lamp strip and control circuit thereof - Google Patents

Four-color lamp strip and control circuit thereof Download PDF

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Publication number
CN112728443B
CN112728443B CN202011626477.2A CN202011626477A CN112728443B CN 112728443 B CN112728443 B CN 112728443B CN 202011626477 A CN202011626477 A CN 202011626477A CN 112728443 B CN112728443 B CN 112728443B
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China
Prior art keywords
control unit
switch control
lamp bead
circuit layer
metal sheet
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CN202011626477.2A
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Chinese (zh)
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CN112728443A (en
Inventor
罗绍静
李定国
卢欣欣
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Guangdong Shunde Siry Technology Co ltd
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Guangdong Shunde Siry Technology Co ltd
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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
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • H05K1/0256—Electrical insulation details, e.g. around high voltage areas
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
    • H05K1/0298—Multilayer circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Led Device Packages (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The invention relates to the technical field of LED lamp belts, which is used for solving the defect of wider width of a lamp belt caused by more circuits on a flexible circuit board in the existing four-color lamp belt; a four-color lamp strip comprises a flexible circuit board and a lamp bead unit and/or a resistor unit welded on the flexible circuit board, wherein a top conductive circuit layer comprises an end metal electrode unit and upper and lower conductive circuit layers; the upper and lower conductive circuit layers and the end metal electrode unit form a double-loop in parallel; the lamp bead unit comprises a first double-chip lamp bead welded in the upper conductive circuit layer and a second double-chip lamp bead welded in the lower conductive circuit layer; the first double-chip lamp bead comprises a first color chip and a second color chip, the positive and negative poles of the first double-chip lamp bead are opposite, the second double-chip lamp bead comprises a third color chip and a fourth color chip, and the positive and negative poles of the second double-chip lamp bead are opposite; the four-color lamp strip is only provided with double loops, the light-emitting chips with four colors can alternately emit light or emit light simultaneously by three lines, and the whole width of the lamp strip is narrow.

Description

Four-color lamp strip and control circuit thereof
Technical Field
The invention relates to the technical field of LED lamp belts, in particular to a four-color lamp belt and a control circuit thereof.
Background
The LED (light emitting diode) strip is a strip that is formed by assembling LEDs on a Flexible Printed Circuit (FPC) or Printed Circuit Board (PCB) hard board, and is so named because the shape of a product is like a strip. Because the service life is long (the normal service life is generally 8-10 ten thousand hours), the energy is saved, the environment is protected, and the method gradually exposes the corners in various decoration industries.
According to the requirements of the existing decoration industry, the single-color LED lamp strip is difficult to meet the requirements of practical application, so that a plurality of LED lamp strips with double colors, three colors, four colors and five colors appear in the market.
In the existing four-color lamp strip, or lamp beads with four colors are connected in series in a row, so that the whole lamp strip is very wide and only can simultaneously light the four colors, and the four colors cannot alternately light; or arrange five at least lines on flexible line way board and form four return circuits, be the lamp pearl of a colour and establish ties on each return circuit, also will lead to whole lamp area width very wide like this, be difficult to satisfy market to the requirement of thin lamp area. Therefore, the existing flexible circuit board is provided with four loops, and the control circuit of the flexible circuit board needs to control the four loops and needs more circuits to realize the four loops, so that the existing control circuit is dense in circuits and high in cost.
Disclosure of Invention
The invention aims to overcome at least one defect (deficiency) of the prior art, and provides a four-color lamp strip, which is used for solving the defect that the width of the lamp strip is wider due to more circuits on a flexible circuit board in the prior four-color lamp strip.
Another object of the present invention is to provide a control circuit for a four-color light strip, which is adapted to the four-color light strip of the present invention, and has simple circuit layout and low cost in the control circuit.
The four-color lamp strip comprises a flexible circuit board, and a lamp bead unit and/or a resistor unit welded on the flexible circuit board, wherein the flexible circuit board comprises a top insulating film layer, a top conducting circuit layer, an insulating base layer, a bottom conducting circuit layer and a bottom insulating film layer which are sequentially arranged, and the top conducting circuit layer comprises an end metal electrode unit, an upper conducting circuit layer and a lower conducting circuit layer; the end metal electrode unit comprises a first metal electrode plate, a second metal electrode plate and a third metal electrode plate, wherein the first metal electrode plate and the second metal electrode plate are arranged at one end and are arranged up and down, and the third metal electrode plate is arranged at the other end; the bottom conducting circuit layer comprises a first electrode, a second electrode and a third electrode; electrode holes are formed in the first metal electrode plate, the second metal electrode plate and the third metal electrode plate of the top conducting circuit layer, penetrate through the insulating base layer and reach the first electrode, the second electrode and the third electrode respectively; the first electrode and the second electrode are of the same polarity, and the third electrode is of opposite polarity; the upper and lower conductive circuit layers and the end metal electrode unit form a double-loop in parallel; the top insulating film layer is provided with a plurality of groups of lamp bead bonding pad through holes and/or a plurality of groups of resistance bonding pad through holes, and a plurality of groups of lamp bead bonding pads and/or resistance bonding pads are formed after the top insulating film layer is attached to the top conducting circuit layer; a lamp bead bonding pad at one end of the upper conductive circuit layer corresponds to a lamp bead bonding pad on the first metal electrode plate, and a lamp bead bonding pad at the other end of the upper conductive circuit layer corresponds to a lamp bead bonding pad on the third metal electrode plate; a lamp bead bonding pad at one end of the lower conductive circuit layer corresponds to a lamp bead bonding pad on the second metal electrode plate, and a lamp bead bonding pad at the other end of the lower conductive circuit layer corresponds to a lamp bead bonding pad on the third metal electrode plate; the lamp bead unit comprises a first double-chip lamp bead welded on a lamp bead bonding pad in the upper conducting circuit layer and a second double-chip lamp bead welded on a lamp bead bonding pad in the lower conducting circuit layer; the first double-chip lamp bead comprises a first color chip and a second color chip, and the second double-chip lamp bead comprises a third color chip and a fourth color chip; the first color chip and the second color chip have opposite positive and negative poles, and the third color chip and the fourth color chip have opposite positive and negative poles; the resistance unit is welded on the resistance welding pads in the upper conductive circuit layer and the lower conductive circuit layer.
In the invention, the upper and lower conductive circuit layers in the double-loop flexible circuit board and the end metal electrode unit form a double loop connected in parallel, the end metal electrode unit comprises three metal electrode plates, two of the metal electrode plates have the same polarity, the other metal electrode plate has the opposite polarity, and the essence is that three lines are arranged in the double-loop flexible circuit board, wherein one line is a shared line, so that the space occupied by the double-loop flexible circuit board can be effectively reduced, and the width of the lamp strip is reduced.
The lamp bead pad through hole or the resistance pad through hole is formed in the top insulating film layer, and after the top insulating film layer is attached to the top conducting circuit layer, exposed metal with the size of the lamp bead pad through hole or the resistance pad through hole can be formed on the top conducting circuit layer, so that the lamp bead pad through hole or the resistance pad through hole is formed and is used for welding the lamp bead or the resistance.
The chip colors of the first color chip, the second color chip, the third color chip and the fourth color chip are generally selected from one of red, green, blue and white, and each chip corresponds to one color; the upper conductive circuit layer and the lower conductive circuit layer are respectively a loop, the upper conductive circuit layer can emit light with two different colors, the lower conductive circuit layer can emit light with two other different colors, the combination of the upper conductive circuit layer and the lower conductive circuit layer can emit light with four different colors, and the three-wire and two-loop circuit can be realized only. Of course, the chips of the first color chip, the second color chip, the third color chip and the fourth color chip may also be selected from other colors, as long as the chips are four different colors.
First colour chip is opposite with second colour chip positive negative pole, third colour chip is opposite with fourth colour chip positive negative pole, switches on through controlling two single double-circuit in return circuit on upper and lower conducting circuit layer and cooperatees with the positive negative pole switching of electric current, can realize that single colour chip is luminous in turn or four kinds of colour chips are luminous simultaneously, and of course, it can realize when the positive negative pole switching frequency of electric current is fast enough to be required that four kinds of colour chips are luminous simultaneously. For example, when a current flows from the first metal electrode pad to the third metal electrode pad, assuming that the first color chip emits light at this time, when a current flows from the third metal electrode pad to the first metal electrode pad, the second color chip emits light at this time. When current flows from the second metal electrode sheet to the third metal electrode sheet, assuming that the third color chip emits light at this time, when current flows from the third metal electrode sheet to the second metal electrode sheet, the fourth color chip emits light at this time. That is to say, the chips of four colors can emit light alternately through the flow directions of the currents in the different loops, and when the switching frequency of the flow directions of the four different currents reaches 265Hz, the effect that the chips of four colors emit light simultaneously can be seen by naked eyes.
Furthermore, the upper conductive circuit layer is formed by connecting a plurality of conductive units in series to form a conductive circuit with a concave-convex structure, and the concave-convex structure faces to the center; the lower conductive circuit layer is also a conductive circuit with a concave-convex structure, is symmetrically distributed relative to the center of the upper conductive circuit layer, is staggered with the concave-convex structure on the upper conductive circuit layer, and is embedded with the concave-convex structure on the upper conductive circuit layer.
The upper electric circuit layer is a concave-convex structure conductive circuit, and the concave-convex structure faces to the center; the lower conducting circuit layer is also a conducting circuit with a concave-convex structure, the concave-convex structure of the lower conducting circuit layer faces the center, the centers of the upper conducting circuit layer and the lower conducting circuit layer are symmetrically distributed, the concave-convex structure on the upper conducting circuit layer is staggered, and the concave-convex structure on the upper conducting circuit layer is embedded with the concave-convex structure on the upper conducting circuit layer, so that the whole double-loop flexible circuit board structure is more compact, and the width of the flexible circuit board is reduced.
In the invention, the upper conductive circuit layer is formed by connecting a plurality of conductive units in series, the lower conductive circuit layer can be formed by connecting a plurality of conductive units which are the same as the upper conductive circuit layer in series, or can be formed by connecting other different conductive forming units in series, only the upper conductive circuit layer and the lower conductive circuit layer are in concave-convex structures and are distributed in central symmetry, and after staggered arrangement, the protrusions on the upper conductive circuit layer can correspond to the grooves on the lower conductive circuit layer, and the grooves on the upper conductive circuit layer correspond to the protrusions on the lower conductive circuit layer, so that the double-loop flexible circuit board with compact integral structure is formed.
Further, the conductive unit includes a first metal sheet; the first metal sheet consists of a lower end part, a connecting part and an upper end part, and the upper end part is provided with a downward convex unit; the lower end part of the front metal sheet corresponds to the upper end part of the rear first metal sheet; after the top insulating film layer is attached to the top conducting circuit layer, the bead welding disc through holes fall on the corresponding parts of the two adjacent first metal sheets.
The conductive unit comprises a first metal sheet, namely the upper conductive circuit layer consists of a plurality of first metal sheets; the first metal sheet consists of a lower end part, a connecting part and an upper end part, and the upper end part is provided with a downward convex unit; the distance between the lower end part and the upper edge of the upper conductive circuit layer is longer than the distance between the bottom of the bulge unit on the upper end part and the upper edge of the upper conductive circuit layer, so that the lower end part of the first metal sheet and the bulge unit form downward bulges with different heights, and an upward groove is formed between the two bulges; the lower tip of preceding first sheetmetal corresponds with the upper end of a back first sheetmetal, and after two adjacent first sheetmetals establish ties like this, the space of following first sheetmetal's lower tip to last conducting wire layer upper edge has just been filled to the upper end of preceding sheetmetal, also makes the protruding parallel and level that all first sheetmetals formed after establishing ties, and the sunken parallel and level that forms also utilizes the space of two return circuit flexible line way board more fully.
After the top insulating film layer is attached to the top conductive circuit layer, the bead pad through holes fall on the corresponding parts of the two adjacent first metal sheets, and at the moment, only the beads are arranged on the power utilization element of the upper conductive circuit layer.
Further, the protrusion unit includes a trapezoidal protrusion and/or a parallelogram protrusion.
No matter the protruding unit is trapezoidal arch or parallelogram arch, the bottom of two kinds of bellyings is all flat, and this is that can be faster more convenient tear off leftover bits after the cutting for top conducting wire layer. In the conductive circuit layer, the protrusion units of the first metal sheet may be all trapezoidal protrusions or parallelogram protrusions, or a mixture of the trapezoidal protrusions and the parallelogram protrusions.
Furthermore, the conductive unit further comprises a second metal sheet and a third metal sheet; the second metal sheet is a metal sheet with two ends protruding downwards and the middle sinking upwards, and the third metal sheet is strip-shaped; a second metal sheet and a first metal sheet are arranged at intervals of two first metal sheets, and a third metal sheet is arranged below the upper end part of each first metal sheet and the left end protrusion of each second metal sheet to form a repeating unit; in the repeating unit, the upper end part of a front first metal sheet corresponds to the lower end part of a rear first metal sheet, the upper end part of the rear first metal sheet and the left end of a second metal sheet both correspond to a third metal sheet below, and the right end of the second metal sheet corresponds to the lower end part of the first metal sheet; the repeating units comprise 5 bulges arranged at intervals and a groove arranged between every two adjacent bulges, wherein the bulges at two ends and the two adjacent repeating units are shared bulges; after the top conductive circuit layer is attached to the top conductive insulation film layer, the lamp bead pad through hole falls on the protruding portion, and the resistance pad through hole falls on the right end of the third protruding portion.
The conductive unit can also comprise a second metal sheet and a third metal sheet besides the first metal sheet; the first metal sheets, the second metal sheets and the third metal sheets are combined to form a repeating unit, which is also another composition and arrangement mode of the upper and lower conductive circuit layers. The repeating unit comprises two first metal sheets, a third metal sheet, a first metal sheet which is arranged in sequence and a second metal sheet which is arranged below the serial connection position of the first metal sheet and the third metal sheet; and connecting a plurality of repeating units in series to form an upper conductive circuit layer, wherein the last repeating unit does not comprise the first metal sheet on the right side of the third metal sheet. The second metal sheet is provided with downward bulges at two ends and an upward recess in the middle, the two bulges are flush with the bulge units in the first metal sheet, and the bottoms of the recesses are flush with the bottoms of the recesses formed in the first metal sheet; the bottom of the serial connection part of the first metal sheet and the second metal sheet is also parallel and level, corresponds to the strip-shaped third metal sheet, and the bottom of the third metal sheet is also parallel and level with the lower end part of the first metal sheet. The repeating units form 5 bulges and 4 grooves which are arranged at intervals, wherein the bulges at two ends and two adjacent repeating units are shared bulges. After the top conductive circuit layer is attached to the top insulating film layer, the lamp bead pad through holes fall on the protrusions to form lamp bead pads, the third protrusions are large, and the resistance pad through holes fall on the right ends of the third protrusions.
Furthermore, the corners of the first metal sheet, the second metal sheet, the third metal sheet, the first metal electrode sheet, the second metal electrode sheet and the third metal electrode sheet are chamfers; the connecting part is arranged obliquely.
No matter the corners of the first metal sheet, the second metal sheet, the third metal sheet, the first metal electrode sheet, the second metal electrode sheet and the third metal electrode sheet are chamfered or the connecting part of the first metal sheet is obliquely arranged, the redundant metal rim charge in the top conducting circuit layer is conveniently torn off in the production process; in the production process, the raw material that top conducting wire led is a smooth sheetmetal, through cutting on the sheetmetal, unnecessary metal rim charge links together, can get rid of unnecessary metal rim charge through once tearing, and the slope design of chamfer design and connecting portion is tearing apart being difficult to relatively tearing off the in-process, improves the efficiency of tearing off greatly.
Further, the lamp pearl pad equidistance that insulating rete in top and last conducting wire layer laminating part formed arranges, the lamp pearl pad equidistance that insulating rete in top and lower conducting wire layer laminating part formed arranges.
The luminous homogeneity of each part in lamp area can effectively be improved to lamp pearl pad equidistance arrangement.
Furthermore, a plurality of electrode holes are formed in the first metal electrode plate, the second metal electrode plate and the third metal electrode plate.
The first metal electrode plate, the second metal electrode plate and the third metal electrode plate on the top conducting circuit layer can be conducted with the first electrode, the second electrode and the third electrode in the bottom conducting circuit layer respectively through soldering tin on the electrode holes, and in the actual soldering process, a false soldering phenomenon sometimes occurs to cause that the top conducting circuit layer cannot be conducted; and a plurality of electrode holes are formed in the first metal electrode plate, the second metal electrode plate and the third metal electrode plate, so that the probability of cold joint can be effectively reduced.
The invention also provides a control circuit of the four-color lamp strip, which comprises the four-color lamp strip and a control circuit connected to two ends of the four-color lamp strip and used for controlling the four-color lamp strip, wherein the four-color lamp strip is provided with a first connecting port, a second connecting port and a third connecting port; the first connection port is connected with the first switch control unit and the fourth switch control unit, the second connection port is connected with the second switch control unit and the fifth switch control unit, and the third connection port is connected with the third switch control unit and the sixth switch control unit; the first switch control unit, the second switch control unit and the third switch control unit are connected with one pole of power supply voltage, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are connected with the other pole of power supply voltage; the first switch control unit and the fourth switch control unit are connected to the signal control unit through a first signal output line, the second switch control unit and the fifth switch control unit are connected to the signal control device through a second signal output line, and the third switch control unit and the sixth switch control unit are connected to the signal control device through a third signal output line.
In the invention, the four-color lamp strip is a double-loop lamp strip, the four-color lamp strip is connected with a power supply voltage through a first connecting port and a second connecting port to form one loop of the lamp strip, the four-color lamp strip is connected with the power supply voltage through a second connecting port and a third connecting port to form the other loop of the lamp strip, and the two loops share the third connecting port in the four-color lamp strip. In the two loops, the adopted lamp beads are lamp beads with double light-emitting chips connected in parallel, the lamp bead of one loop is the lamp bead of a red light-emitting chip and the lamp bead of the other loop is the lamp bead of a blue light-emitting chip and a white light-emitting chip, the positive and negative poles of the red light-emitting chip and the green light-emitting chip are opposite, the positive and negative poles of the blue light-emitting chip and the white light-emitting chip are also opposite, the light-emitting chips with different colors can emit light by controlling the direction of current in a single loop, and when the switching frequency of the current in the two loops reaches 265Hz, naked eyes can feel that the lamp strip simultaneously emits light with four colors. Certainly, the lamp beads can be matched with red, green, blue and white, and can also be matched with any two colors.
The effect that the chips with different colors of the four-color lamp strip emit light alternately or simultaneously is controlled by the control circuit. The current flowing direction line of the invention comprises the following four types: flowing from the first connection port to the second connection port, from the second connection port to the first connection port, from the second connection port to the third connection port, and from the third connection port to the first connection port; specifically, the flow direction of the current is controlled by each switch control unit, and whether each switch control unit is in an on or off state is determined by the signal output by its corresponding signal output line.
Three connecting ports in the circuit correspond to three metal electrode plates in the lamp strip, and three signal output lines respectively control switch control units connected with the three connecting ports, so that the current is controlled to flow from which port to which port, namely the current is controlled to flow from which metal electrode plate to which metal electrode plate.
The invention can control the light-emitting chips with different colors of the four-color lamp strip to alternately emit light or emit light simultaneously through the three signal output lines, and has simple overall circuit layout and lower cost.
Further, the first switch control unit, the second switch control unit, the third switch control unit, the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are all transistors.
The transistor, which is a type of variable current switch, is capable of controlling an output current based on an input voltage. Unlike ordinary mechanical switches, the transistor controls the on/off of itself by using an electrical signal, so the switching speed can be very fast.
Furthermore, the first switch control unit, the second switch control unit and the third switch control unit are P-type MOS transistors, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are N-type MOS transistors; at least one of the first signal output line, the second signal output line and the third signal output line is different when outputting signals simultaneously.
The first signal output line, the second signal output line and the third signal output line can output high-level or low-level signals; in order to enable the LED lamp to emit light normally, it is necessary to ensure that the switch control units connected to the first signal output line, the second signal output line and the third signal output line are a P-type MOS transistor and an N-type MOS transistor, and the signals output by the three signal output lines at the same time are not identical.
When the first switch control unit, the second switch control unit and the third switch control unit are P-type MOS tubes, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are N-type MOS tubes, the signals output by the first switch control unit, the second switch control unit and the third switch control unit comprise the following four signals:
first, when the first signal output line outputs a high level signal and the second signal output line and the third signal output line output a low level signal, the second switch control unit, the third switch control unit and the fourth switch control unit are turned on, and a current flows from the second switch control unit to the fourth switch control unit, at this time, the current flows from the second connection port to the first connection port.
Secondly, when the first signal output line outputs a low level signal and the second signal output line and the third signal output line output a high level signal, the first switch control unit, the fifth switch control unit and the sixth switch control unit are turned on, current flows from the first switch control unit to the fifth switch control unit, and at the moment, current flows from the first connection port to the second connection port.
Thirdly, when the third signal output line outputs a high level signal and the first signal output line and the second signal output line output a low level signal, the first switch control unit, the second switch control unit and the sixth switch control unit are turned on, and current flows from the second switch control unit to the sixth switch control unit, and at this time, current flows from the second connection port to the third connection port.
Fourthly, when the third signal output line outputs a low level signal and the first signal output line and the second signal output line output a high level signal, the third switch control unit, the fourth switch control unit and the fifth switch control unit are turned on, current flows from the third switch control unit to the fifth switch control unit, and at the moment, current flows from the third connection port to the second connection port.
When the flow direction switching frequency of the four currents reaches 265Hz, the naked eyes can feel that the light-emitting chips of the four different colors emit light simultaneously.
Furthermore, the first switch control unit, the second switch control unit and the third switch control unit are N-type MOS transistors, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are S-type MOS transistors; at least one of the first signal output line, the second signal output line and the third signal output line is different when outputting signals simultaneously.
The first switch control unit, the second switch control unit and the third switch control unit are N-type MOS tubes, the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are designed to be P-type MOS tubes, and the method is another method capable of realizing four-color switching or four-color simultaneous light emitting of the lamp strip.
Preferably, the P-type field effect transistor is IRF4905, and the N-type field effect transistor is IRF3205.
Further, the signal control device is a micro control unit.
Compared with the prior art, the invention has the beneficial effects that: the four-color lamp strip is only provided with the double loops, the three lines can realize the alternate light emission or the simultaneous light emission of the light emitting chips with the four colors, and the whole width of the lamp strip is narrow; the four-color lamp strip has the advantages of simple control circuit lines, low cost, high reaction speed and accurate control, and can realize the quick switching of four colors of the lamp strip.
Drawings
Fig. 1 is an overall structural view of a top insulating film layer and a top conductive circuit layer bonded together in embodiment 1 of the present invention.
Fig. 2 is a top conductive trace diagram according to embodiment 1 of the present invention.
Fig. 3 is a bottom conductive trace diagram of embodiment 1 of the invention.
Fig. 4 is an overall structure diagram of the top insulating film layer and the top conductive circuit layer after being bonded in embodiment 2 of the present invention.
Fig. 5 is a top conductive trace diagram according to embodiment 2 of the present invention.
Fig. 6 is a bottom conductive trace diagram according to embodiment 2 of the present invention.
Fig. 7 is a structural view of the first metal sheet of the present invention.
FIG. 8 shows a repeating unit in example 2 of the present invention.
Fig. 9 is a hierarchical structure diagram of the flexible wiring board of the present invention.
FIG. 10 is a diagram of a bottom conductive trace layer according to the present invention.
FIG. 11 is a control circuit diagram of the present invention.
Fig. 12 is a schematic diagram of the operation of the four-color light strip of the present invention.
In the drawings are labeled: top insulating film layer-100, bead pad-110, resistance pad-120; top conductive line layer-200, first metal electrode sheet-210, second metal electrode sheet-220, third metal electrode sheet-230, first metal sheet-240, lower end-241, connecting part-242, upper end-243, protruding unit-244, second metal sheet-250 and third metal sheet-260; an insulation base layer-300; a bottom conductive trace layer-400, a first electrode-410, a second electrode-420, a third electrode-430; bottom insulating film layer-500; a first switch control unit-610, a second switch control unit-620, a third switch control unit-630, a fourth switch control unit-640, a fifth switch control unit-650, a sixth switch control unit-660; signal control means-700, a first signal output line-710, a second signal output line-720, a third signal output line-730; a first connection port-810, a second connection port-820, and a third connection port-830.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For the purpose of better illustrating the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
A double-loop flexible circuit board comprises a flexible circuit board and a lamp bead unit welded on the flexible circuit board, as shown in figure 9, the flexible circuit board comprises a top insulating film layer 100, a top conducting circuit layer 200, an insulating base layer 300, a bottom conducting circuit layer 400 and a bottom insulating film layer 500 which are sequentially arranged, as shown in figures 1-3, the top conducting circuit layer 200 comprises an end metal electrode unit, an upper conducting circuit layer and a lower conducting circuit layer; the end metal electrode unit comprises a first metal electrode plate 210, a second metal electrode plate 220 and a third metal electrode plate 230, wherein the first metal electrode plate 210 and the second metal electrode plate 220 are arranged at one end and are arranged up and down, and the third metal electrode plate 230 is arranged at the other end; as shown in fig. 10, the bottom conductive trace layer 400 includes a first electrode 410, a second electrode 420, and a third electrode 430; electrode holes are formed in the first metal electrode sheet 210, the second metal electrode sheet 220 and the third metal electrode sheet 230 of the top conductive circuit layer 200, and penetrate through the insulating base layer 300 to reach the first electrode 410, the second electrode 420 and the third electrode 430 respectively; the first electrode 410 and the second electrode 420 are the same electrode, and the third electrode 430 is an opposite electrode; the upper and lower conductive circuit layers and the end metal electrode unit form a double-loop in parallel; a plurality of groups of lamp bead bonding pad through holes are formed in the top insulating film layer 100, and are attached to the top conductive circuit layer 200 to form a plurality of groups of lamp bead bonding pads 110 or resistance bonding pads 120; the lamp bead pads 110 at one end of the upper conductive circuit layer correspond to the lamp bead pads 110 on the first metal electrode sheet 210 to form a group of lamp bead pads 110, and the lamp bead pads 110 at the other end of the upper conductive circuit layer correspond to the lamp bead pads 110 on the third metal electrode sheet 230 to form a group of lamp bead pads 110; the lamp bead bonding pad 110 at one end of the lower conductive circuit layer corresponds to the lamp bead bonding pad 110 on the second metal electrode plate 220 to form a group of lamp bead bonding pads 110, and the lamp bead bonding pad 110 at the other end of the lower conductive circuit layer corresponds to the lamp bead bonding pad 110 on the third metal electrode plate 230 to form a group of lamp bead bonding pads 110; the lamp bead unit comprises a first double-chip lamp bead welded on a lamp bead bonding pad in the upper conducting circuit layer and a second double-chip lamp bead welded on a lamp bead bonding pad in the lower conducting circuit layer; the first double-chip lamp bead comprises a first color chip and a second color chip, and the second double-chip lamp bead comprises a third color chip and a fourth color chip; the first color chip and the second color chip have opposite positive and negative poles, and the third color chip and the fourth color chip have opposite positive and negative poles; the resistance units are welded on the resistance welding pads in the upper conductive circuit layer and the lower conductive circuit layer.
In this embodiment, the upper and lower conductive circuit layers in the dual-loop flexible printed circuit board and the end metal electrode unit form a dual loop connected in parallel, and the end metal electrode unit includes three metal electrode pieces, two of which are anodes, and the other metal electrode piece is a cathode, which is essentially the dual-loop flexible printed circuit board having three lines, one of which is a common line, so that the space occupied by the dual-loop flexible printed circuit board can be effectively reduced, and the width of the lamp strip can be reduced. The chip colors of the first color chip, the second color chip, the third color chip and the fourth color chip are respectively red, green, blue and white; the first color chip and the second color chip are connected in parallel and have opposite positive and negative poles, and the third color chip and the fourth color chip are connected in parallel and have opposite positive and negative poles; in the upper conducting circuit layer, when the first electrode is a positive electrode, the third electrode is a negative electrode, current flows from the first metal electrode plate to the third metal electrode plate, if the lamp strip emits red light, then when the first electrode is a negative electrode, current flows from the third metal electrode plate to the first metal electrode plate, and the lamp strip emits green light. Similarly, in the lower conductive circuit layer, blue and white light can be alternately emitted by switching the current anode and the current cathode. Thus, there are four current directions, respectively: the first metal electrode plate flows to the third metal electrode plate, the third metal electrode plate flows to the first metal electrode plate, the second metal electrode plate flows to the third metal electrode plate, and the third metal electrode plate flows to the second metal electrode plate.
In the present embodiment, as shown in fig. 2, the upper conductive trace layer is formed by connecting 11 first metal sheets 240 in series, as shown in fig. 7, the first metal sheets 240 are composed of a lower end portion 241, a connecting portion 242 and an upper end portion 243, and the upper end portion 243 has a downward protruding unit 244; in the present embodiment, the protrusion unit 244 has a trapezoid shape, but the protrusion unit 244 may also have a parallelogram shape; the upper end 243 of the previous first metal sheet 240 and the lower end 241 of the next first metal sheet 240 form a protrusion, which is flush with the lower end 241; a groove is formed between the lower end part 241 and the projection; the whole upper conductive circuit layer forms a concave-convex structure conductive circuit.
In this embodiment, as shown in fig. 3, the composition and distribution of the lower conductive trace layer are completely consistent with the upper conductive trace layer, and the lower conductive trace layer and the upper conductive trace layer are symmetrically centered and staggered to be embedded with each other. The protrusion of the upper conductive circuit layer corresponds to the groove of the lower conductive circuit layer, and the groove of the upper conductive circuit layer corresponds to the protrusion of the lower conductive circuit layer, so that the upper conductive circuit layer and the lower conductive circuit layer can be well embedded together, and then the upper conductive circuit layer and the lower conductive circuit layer are connected in series with the end electrode metal unit to form a complete top conductive circuit layer 200, so that the whole double-loop flexible circuit board is more compact in structure, and the width of the flexible circuit board is reduced.
In the present embodiment, as shown in fig. 1, the end metal electrode sheets include a first metal electrode sheet 210, a second metal electrode sheet 220, and a third metal electrode sheet 230; one end of the first metal electrode sheet 210 is provided with two electrode holes, penetrates through the insulating base layer 300 to the first electrode 410, and is conducted with the first electrode 410 through soldering tin in the electrode holes; the other end of the first metal electrode sheet 210 protrudes downwards and corresponds to the lower end 241 of the leftmost first metal sheet 240; one end of the second metal electrode sheet 220 is also provided with two electrode holes, which penetrate through the insulating base layer 300 to the second electrode 420 and are conducted with the second electrode 420 through soldering tin in the electrode holes; the other end of the second metal electrode sheet 220 is positioned in a space formed by the first metal electrode sheet 210 and the leftmost end of the lower conductive circuit layer and corresponds to the bulge at the leftmost end of the lower conductive circuit layer; the third metal electrode sheet 230 has two electrode holes at one end, and has an electrode hole at the bottom corresponding to the rightmost ends of the upper and lower conductive circuit layers, so that the third electrode 430 can be connected to the third electrode through soldering tin in the electrode hole.
In this embodiment, after the top conductive circuit layer 200 is attached to the top insulating film layer 100, the bead pad through hole falls on the corresponding part of the protrusion in the upper and lower layer of the electric circuit layer to form the bead pad 110; in upper and lower conducting circuit layer, lamp pearl pad 110 is the equidistance and arranges.
In the embodiment, the corners of all the metal sheets in the upper and lower conductive circuit layers are chamfered; the connection portion 242 of the first metal sheet 240 is arranged obliquely; the upper end 243 forms an upper edge. No matter the corners of the first metal sheet 240, the first metal electrode sheet 210, the second metal electrode sheet 220 and the third metal electrode sheet 230 are chamfered or the connecting part 242 of the first metal sheet 240 is obliquely arranged, the redundant metal rim charge in the top conductive circuit layer 200 is conveniently torn off in the production process; in the production process, the raw material that top conducting wire led is a smooth sheetmetal, through cutting on the sheetmetal, unnecessary metal rim charge links together, can get rid of unnecessary metal rim charge through once tearing, and the slope design of chamfer design and connecting portion 242 is tearing off the in-process and is difficult to relatively tearing off, improves the efficiency of tearing off greatly.
Example 2
A double-loop flexible circuit board comprises a flexible circuit board, and a lamp bead unit and a resistance unit which are welded on the flexible circuit board, as shown in figure 9, the flexible circuit board comprises a top insulating film layer 100, a top conducting circuit layer 200, an insulating base layer 300, a bottom conducting circuit layer 400 and a bottom insulating film layer 500 which are sequentially arranged, as shown in figures 4-6, the top conducting circuit layer 200 comprises an end part metal electrode unit, an upper conducting circuit layer and a lower conducting circuit layer; the end metal electrode unit comprises a first metal electrode plate 210, a second metal electrode plate 220 and a third metal electrode plate 230, wherein the first metal electrode plate 210 and the second metal electrode plate 220 are arranged at one end and are arranged up and down, and the third metal electrode plate 230 is arranged at the other end; as shown in fig. 10, the bottom conductive trace layer 400 includes a first electrode 410, a second electrode 420, and a third electrode 430; the first metal electrode plate 210, the second metal electrode plate 220 and the third metal electrode plate 230 of the top conductive circuit layer 200 are all provided with electrode holes which penetrate through the insulating base layer 300 to reach the first electrode 410, the second electrode 420 and the third electrode 430 respectively; the first electrode 410 and the second electrode 420 are the same electrode, and the third electrode 430 is an opposite electrode; as shown in fig. 4, the upper and lower conductive circuit layers and the end metal electrode units form a dual-circuit in parallel; a plurality of groups of lamp bead bonding pad through holes and a plurality of groups of resistance bonding pad through holes are formed in the top insulating film layer 100 and are mixed, and a plurality of groups of lamp bead bonding pads 110 or resistance bonding pads 120 are formed after the lamp bead bonding pad through holes and the top conductive circuit layer 200 are attached; as shown in fig. 5, the lamp bead pads 110 at one end of the upper conductive circuit layer correspond to the lamp bead pads 110 on the first metal electrode sheet 210 to form a group of lamp bead pads 110, and the lamp bead pads 110 at the other end of the upper conductive circuit layer correspond to the lamp bead pads 110 on the third metal electrode sheet 230 to form a group of lamp bead pads 110; as shown in fig. 6, a set of bead pads 110 is formed by the bead pads 110 at one end of the lower conductive circuit layer corresponding to the bead pads 110 on the second metal electrode sheet 220, and a set of bead pads 110 is formed by the bead pads 110 at the other end of the lower conductive circuit layer corresponding to the bead pads 110 on the third metal electrode sheet 230; the lamp bead unit comprises a first double-chip lamp bead welded on a lamp bead bonding pad in the upper conducting circuit layer and a second double-chip lamp bead welded on a lamp bead bonding pad in the lower conducting circuit layer; the first double-chip lamp bead comprises a first color chip and a second color chip, and the second double-chip lamp bead comprises a third color chip and a fourth color chip; the first color chip and the second color chip have opposite positive and negative poles, and the third color chip and the fourth color chip have opposite positive and negative poles; the resistance unit is welded on the resistance welding pads in the upper conductive circuit layer and the lower conductive circuit layer.
In this embodiment, the upper and lower conductive circuit layers in the dual-loop flexible printed circuit board and the end metal electrode unit form a dual loop connected in parallel, and the end metal electrode unit includes three metal electrode pieces, two of which are anodes, and the other metal electrode piece is a cathode, which is essentially the dual-loop flexible printed circuit board having three lines, one of which is a common line, so that the space occupied by the dual-loop flexible printed circuit board can be effectively reduced, and the width of the lamp strip can be reduced. The chip colors of the first color chip, the second color chip, the third color chip and the fourth color chip are respectively red, green, blue and white; the first color chip and the second color chip are connected in parallel and have opposite positive and negative poles, and the third color chip and the fourth color chip are connected in parallel and have opposite positive and negative poles; in the upper conducting circuit layer, when the first electrode is a positive electrode, the third electrode is a negative electrode, current flows from the first metal electrode plate to the third metal electrode plate, if the lamp strip emits red light, then when the first electrode is a negative electrode, current flows from the third metal electrode plate to the first metal electrode plate, and the lamp strip emits green light. Similarly, in the lower conductive circuit layer, blue and white light can be alternately emitted by switching the current anode and the current cathode. Thus, there are four current directions, respectively: the first metal electrode plate flows to the third metal electrode plate, the third metal electrode plate flows to the first metal electrode plate, the second metal electrode plate flows to the third metal electrode plate, and the third metal electrode plate flows to the second metal electrode plate.
As shown in fig. 5, the upper conductive trace layer is formed by connecting three repeating units in series, and as shown in fig. 8, the repeating unit is formed by connecting two first metal sheets 240 and a third metal sheet 260 in series, and then connecting a second metal sheet 250 and a first metal sheet 240 in series; the first metal sheet 240 in which the third repeating unit does not include a terminal; the first metal sheet 240 is composed of a lower end portion 241, a connecting portion 242, and an upper end portion 243, and the upper end portion 243 has a downward protrusion unit 244; the second metal sheet 250 is a structure with two ends protruding downwards and the middle recessed downwards, and the third metal sheet 260 is in a strip shape; the upper end 243 of the previous first metal sheet 240 corresponds to the lower end 241 of the next first metal sheet 240, the upper end 243 of the next first metal sheet 240 corresponds to one end of a third metal sheet 260, the other end of the third metal sheet 260 corresponds to one end of a second metal sheet 250, and the other end of the second metal sheet 250 corresponds to the lower end 241 of the last first metal sheet 240; the repeating unit is provided with 5 bulges which are arranged at intervals and 4 grooves between two adjacent bulges, and the bulges at two ends are shared with the bulges of two adjacent repeating units; in the upper conducting circuit layer, all the bulges are level and the bottoms of all the grooves are level and level; the upper conductive circuit layer forms a conductive circuit with a concave-convex structure.
As shown in fig. 6, the lower conductive circuit layer also forms a conductive circuit with a concave-convex structure, which is distributed symmetrically with the center of the upper conductive circuit layer and is staggered and embedded with each other. The composition structure of the lower conductive circuit layer is basically similar to that of the upper conductive circuit layer, wherein the composition unit structure of the lower conductive circuit layer corresponding to the third metal sheet 260 in the upper conductive circuit layer is completely consistent, the composition unit structure of the lower conductive circuit layer corresponding to the first metal sheet 240 in the upper conductive circuit layer is consistent, part of the composition unit structure is different in the protrusion unit 244 sheet, and similar points exist on the composition unit structure corresponding to the second metal sheet 250 in the upper conductive circuit layer, both ends of the composition unit structure are provided with protrusions, and only the protrusion structures at both ends are different; however, the concave-convex structure formed on the lower conductive circuit layer is completely consistent with the concave-convex structure formed on the upper conductive circuit layer, so that the concave-convex structure and the convex-concave structure can be well embedded together, and the width of the flexible circuit board is reduced.
In this embodiment, the protrusion units 244 in the upper conductive trace layer include isosceles trapezoid protrusions, non-isosceles trapezoid protrusions, and parallelogram protrusions, which are mutually matched to ensure that all the space is fully utilized in a minimum occupied area.
After the top conductive circuit layer 200 is attached to the top insulating film layer 100, the bead pad through holes fall on the corresponding parts of the protrusions of the upper conductive circuit layer and the lower conductive circuit layer to form bead pads 110; the through holes of the resistance pad fall on the corresponding portion of the third metal sheet 260 and the second metal sheet 250 in the upper conductive trace layer, and the through holes of the resistance pad 120 on the lower conductive trace layer fall on the central symmetry of the corresponding portion.
In the present embodiment, as shown in fig. 4, the end metal electrode tabs include a first metal electrode tab 210, a second metal electrode tab 220, and a third metal electrode tab 230; one end of the first metal electrode sheet 210 is provided with two electrode holes, penetrates through the insulating base layer 300 to the first electrode 410, and is conducted with the first electrode 410 through soldering tin in the electrode holes; the other end of the first metal electrode sheet 210 protrudes downwards and corresponds to the lower end 241 of the leftmost first metal sheet 240; one end of the second metal electrode sheet 220 is also provided with two electrode holes, penetrates through the insulating base layer 300 to the second electrode 420, and is conducted with the second electrode 420 through soldering tin in the electrode holes; the other end of the second metal electrode sheet 220 is located in a space formed by the first metal electrode sheet 210 and the leftmost end of the lower conductive circuit layer and corresponds to the bulge at the leftmost end of the lower conductive circuit layer; the third metal electrode plate 230 has two electrode holes at one end, and an electrode hole at the bottom of the third metal electrode plate, except for the rightmost end of the upper and lower conductive circuit layers, and can be connected to the third electrode 430 through soldering tin in the electrode hole.
In this embodiment, in the upper and lower conductive circuit layers, the bead pads 110 are arranged at equal intervals.
In the embodiment, the corners of all the metal sheets in the upper and lower conductive circuit layers are chamfered; the connection part 242 of the first metal sheet 240 is arranged obliquely; the upper end 243 forms an upper edge. No matter the corners of the first metal sheet 240, the second metal sheet 250, the third metal sheet 260, the first metal electrode sheet 210, the second metal electrode sheet 220 and the third metal electrode sheet 230 are chamfered or the connecting part 242 of the first metal sheet 240 is arranged obliquely, the redundant metal rim charge in the top conductive circuit layer 200 is conveniently torn off in the production process; in the production process, the raw material that top conducting wire led is a smooth sheetmetal, and through cutting on the sheetmetal, unnecessary metal rim charge links together, can get rid of unnecessary metal rim charge through once tearing off, and the slope design of chamfer design and connecting portion 242 is tearing off the in-process and is difficult to tear relatively, improves the efficiency of tearing off greatly.
Example 3
As shown in fig. 11, a low-voltage control circuit for a four-color lamp strip includes a four-color lamp strip and a control circuit connected to two ends of the four-color lamp strip for controlling the four-color lamp strip, where the four-color lamp strip is a dual-loop lamp strip and has a first connection port 810, a second connection port 820, and a third connection port 830; the first connection port 810 is connected to the first switch control unit 610 and the fourth switch control unit 640, the second connection port 820 is connected to the second switch control unit 620 and the fifth switch control unit 650, and the third connection port 830 is connected to the third switch control unit 630 and the sixth switch control unit 660; the first switch control unit 610, the second switch control unit 620 and the third switch control unit 630 are connected to one pole of the power supply voltage, and the fourth switch control unit 640, the fifth switch control unit 650 and the sixth switch control unit 660 are connected to the other pole of the power supply voltage; the first switch control unit 610 and the fourth switch control unit 640 are connected to the signal control unit through a first signal output line 710, the second switch control unit 620 and the fifth switch control unit 650 are connected to the signal control device 700 through a second signal output line 720, and the third switch control unit 630 and the sixth switch control unit 660 are connected to the signal control device 700 through a third signal output line 730; at least one of the first signal output line 710, the second signal output line 720 and the third signal output line 730 outputs a signal at the same time is different.
Fig. 12 shows a working principle of a four-color light strip used in this embodiment, the four-color light strip is formed by connecting multiple short light strips in parallel, taking one short light strip as an example, a first short light strip in fig. 12 includes two loops, and the two loops share a third connection port 830, where in a loop formed by the first connection port 810 and the third connection port 830, three double-light-emitting chip light beads and a resistor are connected in series, and each double-light-emitting chip light bead is formed by connecting an a-color light-emitting chip (a first color chip) and a B-color light-emitting chip (a second color chip) in parallel and has opposite polarities; in a loop formed by the second connection port 820 and the third connection port 830, three double-light-emitting chip lamp beads are also connected in series with a resistor, and each double-light-emitting chip lamp bead is formed by connecting a C-color light-emitting chip (a third-color chip) and a D-color light-emitting chip (a fourth-color chip) in parallel, wherein the positive and negative poles of the C-color light-emitting chip and the D-color light-emitting chip are opposite; the colors a, B, C and D are four completely different colors.
When the first connection port 810 is connected with the second connection port 820, if current enters the second connection port 820 from the first connection port 810, only the a color light emitting chip (first color chip) in the lamp strip emits light; if current enters the first connection port 810 from the second connection port 820, only the B color light emitting chip (second color chip) in the strip emits light; when the second connection port 820 and the third connection port 830 are connected, if a current enters the third connection port 830 through the second connection port 820, only the C color light emitting chip (the third color chip) in the lamp strip emits light, and if a current enters the second connection port 820 through the third connection port 830, only the D color light emitting chip (the fourth color chip) in the lamp strip emits light. Therefore, the light-emitting chips with the four colors in the lamp strip can be controlled to alternately emit light, when the four connection modes are switched at high frequency, the light-emitting chips with the four colors alternately emit light at a high speed, and the effect of simultaneously emitting light with the four colors can be visually created.
The four different current flow lines are controlled by the control circuit, and in the embodiment, the states of the switch control units are controlled by three signal output lines, so that the current flow is controlled.
As shown in fig. 11, in the present embodiment, the first switch control unit 610, the second switch control unit 620 and the third switch control unit 630 are P-type MOS transistors, and the fourth switch control unit 640, the fifth switch control unit 650 and the sixth switch control unit 660 are N-type MOS transistors; the output signals and the current flow direction comprise the following four types:
first, when the first signal output line 710 outputs a high level signal and the second signal output line 720 and the third signal output line 730 output a low level signal, the second switch control unit 620, the third switch control unit 630 and the fourth switch control unit 640 are turned on, and a current flows from the second switch control unit 620 to the fourth switch control unit 640, at this time, the current flows from the second connection port 820 to the first connection port 810, and in combination with fig. 11 and 12, a light emitting chip (a second color chip) of a color B in the strip emits light.
Secondly, when the first signal output line 710 outputs a low level signal and the second signal output line 720 and the third signal output line 730 output a high level signal, the first switch control unit 610, the fifth switch control unit 650 and the sixth switch control unit 660 are turned on, so that current flows from the first switch control unit 610 to the fifth switch control unit 650, and at this time, current flows from the first connection port 810 to the second connection port 820, and in combination with fig. 11 and 12, the a color light emitting chip (first color chip) in the light strip emits light.
Thirdly, when the third signal output line 730 outputs a high level signal and the first signal output line 710 and the second signal output line 720 output a low level signal, the first switch control unit 610, the second switch control unit 620 and the sixth switch control unit 660 are turned on, so that current flows from the second switch control unit 620 to the sixth switch control unit 660, and at this time, current flows from the second connection port 820 to the third connection port 830, and in combination with fig. 11 and 12, the C color light emitting chip (third color chip) in the strip emits light.
Fourthly, when the third signal output line 730 outputs a low level signal and the first signal output line 710 and the second signal output line 720 output a high level signal, the third switch control unit 630, the fourth switch control unit 640 and the fifth switch control unit 650 are turned on, and a current flows from the third switch control unit 630 to the fifth switch control unit 650, and at this time, a current flows from the third connection port 830 to the second connection port 820, and in combination with fig. 11 and 12, the D color light emitting chip (fourth color chip) in the tape emits light.
When the flow direction switching frequency of the four currents reaches 265Hz, the naked eyes can feel that the light-emitting chips of the four different colors emit light simultaneously.
Of course, the above description only exemplifies an embodiment in which six switch control units are N-type MOS transistors or P-type MOS transistors, and other embodiments in which the switch control units capable of realizing the above four current flows are N-type or P-type MOS transistors are also within the scope of the present application. For example, the first switch control unit 610, the second switch control unit 620, and the third switch control unit 630 may be N-type MOS transistors, and the fourth switch control unit 640, the fifth switch control unit 650, and the sixth switch control unit 660 may be S-type MOS transistors; at least one of the first signal output line 710, the second signal output line 720 and the third signal output line 730 outputs a signal at the same time is different.
The first switch control unit 610, the second switch control unit 620, and the third switch control unit 630 are N-type MOS transistors, and the fourth switch control unit 640, the fifth switch control unit 650, and the sixth switch control unit 660 are designed as S-type MOS transistors, which is another method capable of implementing four-color switching or four-color simultaneous light emission of the light strip, and the working principle thereof is the same as that described above, and the current flow direction is also the above four types.
In this embodiment, the P-type fet is IRF4905, and the N-type fet is IRF3205; the signal control device 700 is a micro control unit.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.

Claims (8)

1. A four-color lamp strip comprises a flexible circuit board, and a lamp bead unit and/or a resistor unit welded on the flexible circuit board, wherein the flexible circuit board comprises a top insulating film layer, a top conductive circuit layer, an insulating base layer, a bottom conductive circuit layer and a bottom insulating film layer which are sequentially arranged; the end metal electrode unit comprises a first metal electrode plate, a second metal electrode plate and a third metal electrode plate, wherein the first metal electrode plate and the second metal electrode plate are arranged at one end and are arranged up and down, and the third metal electrode plate is arranged at the other end; the bottom conducting circuit layer comprises a first electrode, a second electrode and a third electrode; electrode holes are formed in the first metal electrode plate, the second metal electrode plate and the third metal electrode plate of the top conducting circuit layer, penetrate through the insulating base layer and reach the first electrode, the second electrode and the third electrode respectively; the first electrode and the second electrode are of the same polarity, and the third electrode is of opposite polarity; the upper and lower conductive circuit layers and the end metal electrode unit form a double-loop in parallel; the top insulating film layer is provided with a plurality of groups of lamp bead bonding pad through holes and/or a plurality of groups of resistance bonding pad through holes, and a plurality of groups of lamp bead bonding pads and/or resistance bonding pads are formed after the top insulating film layer is attached to the top conducting circuit layer; a lamp bead bonding pad at one end of the upper conductive circuit layer corresponds to a lamp bead bonding pad on the first metal electrode plate, and a lamp bead bonding pad at the other end of the upper conductive circuit layer corresponds to a lamp bead bonding pad on the third metal electrode plate; a lamp bead bonding pad at one end of the lower conductive circuit layer corresponds to a lamp bead bonding pad on the second metal electrode plate, and a lamp bead bonding pad at the other end of the lower conductive circuit layer corresponds to a lamp bead bonding pad on the third metal electrode plate; the lamp bead unit comprises a first double-chip lamp bead welded on a lamp bead bonding pad in the upper conductive circuit layer and a second double-chip lamp bead welded on a lamp bead bonding pad in the lower conductive circuit layer; the first double-chip lamp bead comprises a first color chip and a second color chip, and the second double-chip lamp bead comprises a third color chip and a fourth color chip; the first color chip and the second color chip have opposite positive and negative poles, and the third color chip and the fourth color chip have opposite positive and negative poles; the resistance unit is welded on the resistance welding pads in the upper and lower conducting circuit layers;
the upper conductive circuit layer is formed by connecting a plurality of conductive units in series to form a conductive circuit with a concave-convex structure, and the concave-convex structure faces to the center; the lower conductive circuit layer is also a conductive circuit with a concave-convex structure, is symmetrically distributed relative to the center of the upper conductive circuit layer, is staggered with the concave-convex structure on the upper conductive circuit layer, and is embedded with the concave-convex structure on the upper conductive circuit layer;
the conductive unit comprises a first metal sheet; the first metal sheet consists of a lower end part, a connecting part and an upper end part, and the upper end part is provided with a downward convex unit; the lower end part of the front metal sheet corresponds to the upper end part of the rear first metal sheet; after the top insulating film layer is attached to the top conducting circuit layer, the bead welding disc through holes fall on the corresponding parts of the two adjacent first metal sheets.
2. The four-color light strip according to claim 1, wherein the bump units comprise trapezoidal bumps and/or parallelogram bumps.
3. The four-color light strip according to claim 1, wherein the conductive unit further comprises a second metal sheet and a third metal sheet; the second metal sheet is a metal sheet with two ends protruding downwards and the middle sinking upwards, and the third metal sheet is strip-shaped; a second metal sheet and a first metal sheet are arranged at intervals of two first metal sheets, and a third metal sheet is arranged below the upper end part of each first metal sheet and the left end protrusion of each second metal sheet to form a repeating unit; in the repeating unit, the upper end part of a front first metal sheet corresponds to the lower end part of a rear first metal sheet, the upper end part of the rear first metal sheet and the left end of a second metal sheet both correspond to a third metal sheet below, and the right end of the second metal sheet corresponds to the lower end part of the first metal sheet; the repeating units comprise 5 bulges arranged at intervals and a groove arranged between every two adjacent bulges, wherein the bulges at two ends and the two adjacent repeating units are shared bulges; after the top conductive circuit layer is attached to the top conductive insulation film layer, the lamp bead pad through hole falls on the protruding portion, and the resistance pad through hole falls on the right end of the third protruding portion.
4. A four-color light strip according to claim 3, wherein the corners of the first metal sheet, the second metal sheet, the third metal sheet, the first metal electrode sheet, the second metal electrode sheet and the third metal electrode sheet are chamfered.
5. A control circuit for a four-color light strip as claimed in any one of claims 1 to 4, comprising a four-color light strip and a control circuit connected to both ends of the four-color light strip for controlling the four-color light strip, wherein the four-color light strip has a first connection port, a second connection port and a third connection port; the first connection port is connected with the first switch control unit and the fourth switch control unit, the second connection port is connected with the second switch control unit and the fifth switch control unit, and the third connection port is connected with the third switch control unit and the sixth switch control unit; the first switch control unit, the second switch control unit and the third switch control unit are connected with one pole of power supply voltage, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are connected with the other pole of power supply voltage; the first switch control unit and the fourth switch control unit are connected to the signal control unit through a first signal output line, the second switch control unit and the fifth switch control unit are connected to the signal control device through a second signal output line, and the third switch control unit and the sixth switch control unit are connected to the signal control device through a third signal output line.
6. A control circuit in a four-color light strip according to claim 5, wherein the first switch control unit, the second switch control unit, the third switch control unit, the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are transistors.
7. The control circuit of a four-color lamp strip according to claim 6, wherein the first switch control unit, the second switch control unit and the third switch control unit are P-type MOS transistors, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are N-type MOS transistors; at least one of the first signal output line, the second signal output line and the third signal output line is different when outputting signals simultaneously.
8. The control circuit of a four-color lamp strip according to claim 6, wherein the first switch control unit, the second switch control unit and the third switch control unit are N-type MOS transistors, and the fourth switch control unit, the fifth switch control unit and the sixth switch control unit are P-type MOS transistors; at least one of the first signal output line, the second signal output line and the third signal output line is different when outputting signals simultaneously.
CN202011626477.2A 2020-12-31 2020-12-31 Four-color lamp strip and control circuit thereof Active CN112728443B (en)

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CN113163583B (en) * 2021-05-11 2023-01-31 广东顺德施瑞科技有限公司 Power-free short-unit flexible circuit board and lamp strip thereof
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