CN214281707U - Control circuit for double-color switching of LED lamp strip - Google Patents
Control circuit for double-color switching of LED lamp strip Download PDFInfo
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- CN214281707U CN214281707U CN202023204753.4U CN202023204753U CN214281707U CN 214281707 U CN214281707 U CN 214281707U CN 202023204753 U CN202023204753 U CN 202023204753U CN 214281707 U CN214281707 U CN 214281707U
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- control unit
- switch control
- led lamp
- lamp strip
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model relates to the field of LED lamp belts, which is used for solving the problems of complicated control circuit and slow switching response speed of the existing LED lamp belt double-color switching; the control circuit and the LED lamp strip form a return-sun-shaped circuit; the LED lamp is arranged in the middle of the return-sun-shaped circuit, and the upper end and the lower end of the return-sun-shaped circuit are respectively connected with two poles of power supply voltage; the LED lamp strip is conducted with the left side of one pole of power supply voltage through the first switch control unit, and the right side of the LED lamp strip is conducted through the second switch control unit; the LED lamp strip is conducted with the left side of the other pole of the power voltage through a third switch control unit, and the right side of the other pole of the power voltage is conducted through a fourth switch control unit; the first switch control unit and the third switch control unit are connected to the signal control device through a first signal output line; and the second switch control unit and the fourth switch control unit are connected to the signal control device through a second signal output line.
Description
Technical Field
The utility model relates to a LED lamp area field, more specifically relates to a control circuit that is used for two-color switching in LED lamp area.
Background
The LED strip is a product in which LEDs are mounted on a strip-shaped FPC (flexible printed circuit) or PCB (printed circuit board), and is named as a strip because the product is shaped 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. The LED lamp strip belongs to a flexible product and can be curled randomly; the modeling of figures, characters and the like is easy to manufacture; therefore, the LED lamp is widely applied to hotels, markets, homes, cabinets, exhibition stands and the like, and is mainly used for main illumination, indirect illumination, troffer illumination, outline delineation, decorative illumination and the like.
Present LED lamp area is for satisfying practical application's demand, requires that LED lamp area has the lamp pearl of multiple colour, is double-colored, trichrome or polychrome usually, and the lamp pearl through circuit control different colour temperatures is luminous in turn or is luminous in order to satisfy the demand simultaneously. For the double-color LED lamp strip, lamp beads with two colors are required to alternately emit light when the double-color LED lamp strip is applied, and different color vision effects can be achieved through alternate frequency.
The existing control circuit for controlling the double-color switching of the LED lamp strip is generally complex and has poor control effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming above-mentioned prior art at least one kind defect (not enough), provide a control circuit for double-colored switching in LED lamp area, simple structure, switching control sensitivity are high.
The technical scheme adopted by the utility model is that the control circuit for double-color switching of the LED lamp strip comprises the LED lamp strip and control circuits connected to two ends of the LED lamp strip and used for controlling the LED lamp strip, wherein the control circuits and the LED lamp strip form a loop-sun-shaped circuit; the LED lamp is arranged in the middle of the return-sun-shaped circuit, and the upper end and the lower end of the return-sun-shaped circuit are respectively connected with two poles of power supply voltage; the LED lamp strip is conducted with the left side of one pole of power supply voltage through the first switch control unit, and the right side of the LED lamp strip is conducted through the second switch control unit; the LED lamp strip is conducted with the left side of the other pole of the power voltage through a third switch control unit, and the right side of the other pole of the power voltage is conducted through a fourth switch control unit; the first switch control unit and the third switch control unit are connected to the signal control device through a first signal output line; the second switch control unit and the fourth switch control unit are connected to the signal control device through a second signal output line; the first signal output line and the second signal output line output different signals.
In the utility model, two poles of the power supply voltage are respectively arranged at the upper end and the lower end of the return-sun-shaped circuit, and the current is required to be ensured to flow to the lower end/the upper end after passing through the LED lamp strip from the upper end/the lower end; in order to ensure that the LED lamp strip can work normally, the first switch control unit and the fourth switch control unit need to be controlled to be switched on or the second switch control unit and the third switch control unit need to be controlled to be switched on.
The signal control device outputs two different signals, and the signals are respectively transmitted to the two switch control units on the left side of the power supply voltage and the two switch control units on the right side of the power supply voltage through the first signal output line and the second signal output line; the two signals output by the signal control device can be alternately changed, namely the signals output by the first signal output line and the second signal output line can be alternately changed; and each switch control unit is controlled to be in an on or off state through the changed signals. The purpose of conducting the first switch control unit and the fourth switch control unit or conducting the second switch control unit and the third switch control unit is achieved.
In the utility model, the LED lamp strip is a dual-color LED lamp strip, the upper lamp beads of the lamp strip are connected in parallel two by two and then connected in series, the two lamp beads connected in parallel are lamp beads with two different colors, and the lamp beads with the two different colors are arranged on the lamp strip in a positive and negative way, that is, the positive and negative poles of the lamp beads with the two different colors are opposite; preferably, several resistors can also be connected in series in the light strip.
The control circuit of the utility model is designed based on the double-color LED lamp strip, and the LED lamp strip is an electric element in the control circuit; and applying voltage to two ends of the LED lamp strip, and enabling the lamp beads with two colors in the LED lamp strip to alternately emit light by switching the direction of current. The switching of the current direction needs to be realized through the working states of the first switch control unit, the second switch control unit, the third switch control unit and the fourth switch control unit.
Further, the first switch control unit, the second switch control unit, the third switch control unit and the fourth 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 and the second switch control unit are N-type field effect transistors, the third switch control unit and the fourth switch control unit are P-type field effect transistors or the first switch control unit and the second switch control unit are P-type field effect transistors, and the third switch control unit and the fourth switch control unit are N-type field effect transistors.
In the utility model, two switch control units on the left side or the right side of the LED lamp strip need to be ensured to be different field effect transistors, namely P type or N type; because if what connect on the left side is the P type, under the signal control of first signal output line output, two on-off control units on the left side are the on or off state, can lead to LED lamp area can't form the route or the direct two on-off control units that flow through on the left side of electric current and do not pass through LED lamp area. And, also need to ensure that there are two N type field effect transistor and two P type field effect transistor in four on-off control unit, when only having a P type field effect transistor and three N type field effect transistor, or when only having a type field effect transistor and three P type field effect transistor, can't realize that the lamp pearl of two kinds of colours on the LED lamp area is luminous in turn, because LED lamp area has only a route all the time, either the electric current is from left to right, or the electric current is from right to left, and the electric current direction can't switch over.
When two N-type field effect transistors and two P-type field effect transistors are arranged in the four switch control units, the two field effect transistors of the same model are required to be ensured to be close to the positive end or the negative end of the power supply voltage, otherwise, the two field effect transistors close to the positive end or the negative end of the power supply voltage are simultaneously opened, the two field effect transistors at the other end are simultaneously closed, and the LED lamp strip cannot form a loop and cannot normally work.
Preferably, the P-type field effect transistor is IRF4905, and the N-type field effect transistor is IRF 3205.
Further, the signal control device is a micro control unit.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model is used for the control circuit of double-colored switching in LED lamp area, structural design is simple, and signal transmission response speed is fast, can realize that double-colored lamp pearl is luminous in turn, can also pass through signal high frequency in turn, makes the lamp pearl high frequency of two kinds of colours luminous in turn, gives other people in the vision and builds the luminous effect simultaneously of two kinds of colour lamp pearls.
Drawings
Fig. 1 is a control circuit diagram of the present invention.
Fig. 2 is the working principle diagram of the LED lamp strip of the present invention.
Signal control means-100, first switch control unit-210, second switch control unit-220, third switch control unit-230, fourth switch control unit-240, first signal output line-310, second signal output line-320.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of 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
As shown in fig. 1, a control circuit for two-color switching of an LED strip includes an LED strip and control circuits connected to two ends of the LED strip for controlling the LED strip, where the control circuits and the LED strip form a loop-sun circuit; the LED lamp is arranged in the middle of the return-sun-shaped circuit, and the upper end and the lower end of the return-sun-shaped circuit are respectively connected with two poles of power supply voltage; the LED lamp strip is conducted with the left side of one pole of the power supply voltage through the first switch control unit 210, and the right side of the one pole of the power supply voltage is conducted through the second switch control unit 220; the left side of the other pole of the power voltage of the LED lamp strip is conducted through a third switch control unit 230, and the right side of the other pole of the power voltage of the LED lamp strip is conducted through a fourth switch control unit 240; the first switch control unit 210 and the third switch control unit 230 are connected to the signal control device 100 through a first signal output line 310; the second switch control unit 220 and the fourth switch control unit 240 are connected to the signal control device 100 through a second signal output line 320.
In this embodiment, the LED lamp is arranged in the middle of the return-sun-shaped circuit, the lower end of the return-sun-shaped circuit is the positive pole of the power voltage, and the upper end of the return-sun-shaped circuit is the negative pole of the power voltage; the first switch control unit 210 and the second switch control unit 220 are P-type field effect transistors, and specifically, the first switch control unit 210 and the second switch control unit 220 are IRF 4905; the third switch control unit 230 and the fourth switch control unit 240 are N-type field effect transistors, and specifically, the third switch control unit 230 and the fourth switch control unit 240 are IRF 3205; the control device is a micro control unit, and the micro control unit can output two signals which are transmitted by a first signal output line 310 and a second signal output line 320 respectively; the first signal output line 310 outputs a signal for controlling the first switch control unit 210 and the third switch control unit 230 to make one of them in an on state and one in an off state; the second signal output line 320 outputs a signal for controlling the second switch control unit 220 and the fourth switch control unit 240 to make one of them in an on state and one in an off state.
In this embodiment, when the signal output by the first signal output line 310 turns on the first switch control unit 210 and turns off the third switch control unit 230, the signal output by the second signal output line 320 turns on the fourth switch control unit 240 and turns off the second switch control unit 220, at this time, the current flows out from the lower-end power voltage and goes to the right-side line, passes through the fourth switch control unit 240, flows through the LED strip from the right side, flows out from the left side, passes through the first switch control unit 210, and flows back to the upper-end power voltage from the left-side line, and the traveling trajectory of the whole current is S-shaped.
In this embodiment, when the signal output by the first signal output line 310 turns on the third switch control unit 230 and turns off the first switch control unit 210, the signal output by the fourth signal output line turns on the second switch control unit 220 and turns off the fourth switch control unit 240, at this time, the current flows out from the lower-end power voltage, flows to the left line, passes through the third switch control unit 230, flows through the LED strip from the left side, flows out from the right side, passes through the second switch control unit 220, flows back to the upper-end power voltage from the right line, and the traveling trajectory of the whole current is in an inverse S shape forming a mirror image with S.
Of course, the first switch control unit 210 and the second switch control unit 220 may also be N-type fets, the third switch control unit 230 and the fourth switch control unit 240 are P-type fets, and the whole circuit control principle is the same as that described above.
In this embodiment, the signals of the first signal output line 310 and the second signal output line 320 are changed to make the current flow from the left side to the right side or from the right side to the left side, so that the lamp beads of two colors on the LED lamp strip alternately emit light or the lamp beads exhibit the effect of simultaneous light emission of the lamp beads of two colors through a high-frequency alternate control signal.
In this embodiment, a working principle diagram of the LED lamp strip is shown in fig. 2, where the lamp strip is composed of multiple segments of lamp strip units, taking the leftmost lamp strip as an example, three groups of lamp beads are connected in series on the lamp strip, and the left lamp strip of each group of lamp beads is a lamp bead with a positive electrode facing downward and a negative electrode facing upward and of the same color; the lamp strip on the right side of each group of lamp beads is a lamp bead with the anode facing upwards and the cathode facing downwards and in another color. When the power upper end is anodal, the right side lamp pearl is bright, when the power lower extreme is the negative pole, the left side lamp pearl is bright, when the positive negative pole high frequency of power is in turn, builds the effect that two kinds of colours lamp pearl are bright simultaneously. The control of the anode and the cathode of the power supply of the LED strip is realized by the control circuit of this embodiment.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (4)
1. A control circuit for double-color switching of an LED lamp strip comprises the LED lamp strip and control circuits connected to two ends of the LED lamp strip and used for controlling the LED lamp strip, and is characterized in that the control circuits and the LED lamp strip form a return-sun-shaped circuit; the LED lamp is arranged in the middle of the return-sun-shaped circuit, and the upper end and the lower end of the return-sun-shaped circuit are respectively connected with two poles of power supply voltage; the LED lamp strip is conducted with the left side of one pole of power supply voltage through the first switch control unit, and the right side of the LED lamp strip is conducted through the second switch control unit; the LED lamp strip is conducted with the left side of the other pole of the power voltage through a third switch control unit, and the right side of the other pole of the power voltage is conducted through a fourth switch control unit; the first switch control unit and the third switch control unit are connected to the signal control device through a first signal output line; the second switch control unit and the fourth switch control unit are connected to the signal control device through a second signal output line; the first signal output line and the second signal output line output different signals; the signal control device is a micro control unit.
2. A control circuit for two-color switching of an LED strip according to claim 1, wherein the first switch control unit, the second switch control unit, the third switch control unit and the fourth switch control unit are all transistors.
3. The control circuit for bicolor switching of the LED lamp strip according to claim 2, wherein the first switch control unit and the second switch control unit are N-type field effect transistors, and the third switch control unit and the fourth switch control unit are P-type field effect transistors.
4. The control circuit for bicolor switching of the LED lamp strip according to claim 2, wherein the first switch control unit and the second switch control unit are P-type field effect transistors, and the third switch control unit and the fourth switch control unit are N-type field effect transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204753.4U CN214281707U (en) | 2020-12-25 | 2020-12-25 | Control circuit for double-color switching of LED lamp strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023204753.4U CN214281707U (en) | 2020-12-25 | 2020-12-25 | Control circuit for double-color switching of LED lamp strip |
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| Publication Number | Publication Date |
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| CN214281707U true CN214281707U (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023204753.4U Active CN214281707U (en) | 2020-12-25 | 2020-12-25 | Control circuit for double-color switching of LED lamp strip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI834449B (en) * | 2021-12-28 | 2024-03-01 | 聯詠科技股份有限公司 | Power supply circuit for switching converter |
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2020
- 2020-12-25 CN CN202023204753.4U patent/CN214281707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI834449B (en) * | 2021-12-28 | 2024-03-01 | 聯詠科技股份有限公司 | Power supply circuit for switching converter |
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