Five-level color temperature adjustable circuit

Abstract

A five-level colour temperature adjustable circuit for a lamp, such as a light-emitting diode (LED) lamp, comprises a five-level shift switch 1, a first lamp bead 2 and a second lamp bead 3, the first

Description

Technical Field The present invention belongs to the technical field of five-level color temperature adjustable circuits, and specifically provides a five-level color temperature adjustable circuit. Background Art LED lamps are new energy-saving lamps that replace traditional incandescent lamps. Traditional incandescent lamps are high in energy consumption and short in service life. Under the global resource-constrained environment, they have gradually been banned from production by governments around the world. With the rapid development of LED technology, LED lamps have gradually become the best choice for new green lighting. LED lamps are far superior to traditional lighting products in terms of luminous principle, energy conservation and environmental protection. Traditional LED lighting lamps with single color temperature cannot meet the needs of different color temperature requirements in specific environments. For example, in some LED landscape lighting lamps, the LED lighting lamps need to have a function of emitting light with different color temperatures to meet the needs of landscape lighting, and in some daily lighting and commercial lighting, lamps are also required to have a function of adjusting light color temperature due to different lighting needs. Therefore, in order to meet the needs of the market, LED lighting lamps are required to have the ability to emit light with different color temperatures. Summary of the Invention To solve the problems proposed in the above background art, the present invention provides a five-level color temperature adjustable circuit. To achieve the above purpose, the present invention provides the following technical solution. A five-level color temperature adjustable circuit includes a five-level shift switch, a first lamp bead, and a second lamp bead. The first lamp bead and the second lamp bead have different color temperatures. The five-level shift switch has six interfaces, respectively a first interface, a second interface, a third interface, a fourth interface, a fifth interface, and a sixth interface. The third interface is connected to a negative electrode of a power supply. The first interface is connected to one interface of the first lamp bead, and the other interface of the first lamp bead is connected to a positive electrode of the power supply. The sixth interface is connected to one interface of the second lamp bead, and the other interface of the second lamp bead is connected to the positive electrode of the power supply. A control circuit module is arranged among the first interface, the second interface, the third interface, the fourth interface, the fifth interface, and the sixth interface. In a further technical solution, when the five-level shift switch is at a first shift position, the third interface is connected to the first interface, and the first lamp bead works; when the five-level shift switch is at a second shift position, the third interface is connected to the second interface, and the first lamp bead and the second lamp bead work; when the five-level shift switch is at a third shift position, the third interface is connected to the fourth interface, and the first lamp bead and the second lamp bead work; when the five-level shift switch is at a fourth shift position, the third interface is connected to the fifth interface, and the first lamp bead and the second lamp bead work; and when the five-level shift switch is at a fifth shift position, the third interface is connected to the sixth interface, and the second lamp bead works. In a further technical solution, the control circuit module includes a first circuit module and a second circuit module. The first circuit module includes a first diode, a second diode, a third diode, a first resistor, and a second resistor, where a positive electrode of the first diode is connected to the first interface, and a negative electrode of the first diode is connected to the second interface; a positive electrode of the second diode is connected to the second interface, a negative electrode of the second diode is connected to one end of the second resistor, and the other end of the second resistor is connected to the fourth interface; and a negative electrode of the third diode is connected to the second interface, a positive electrode of the third diode is connected to one end of the first resistor, and the other end of the first resistor is connected to the fourth interface. In a further technical solution, the second circuit module includes a fourth diode, a fifth diode, a sixth diode, a third resistor, and a fourth resistor, where a positive electrode of the fourth diode is connected to the sixth interface, and a negative electrode of the fourth diode is connected to the fifth interface; a positive electrode of the fifth diode is connected to the fifth interface, a negative electrode of the fifth diode is connected to one end of the fourth resistor, and the other end of the fourth resistor is connected to the fourth interface; and a negative electrode of the sixth diode is connected to the fifth interface, a positive electrode of the sixth diode is connected to one end of the third resistor, and the other end of the third resistor is connected to the fourth interface. In a further technical solution, the first lamp bead and the second lamp bead are both LED lamp beads. Compared with the prior art, the present invention has the following beneficial effects. In the present invention, the first lamp bead and the second lamp bead are loaded with two different color temperatures, and currents outputted to the first lamp bead and the second lamp bead with different color temperatures are adjusted according to requirements on color temperature, so color temperatures of different lights of the currents loaded in the first lamp bead and the second lamp bead are also different, and the five-level shift switch is used to switch current output to drive the first lamp bead and the second lamp bead to output different color temperatures. Brief Description of the Drawings Figure 1 is a first circuit diagram of the present invention; and Figure 2 is a second circuit diagram of the present invention. In the figures: 1. five-level shift switch; la. first interface; lb. second interface; 1c. third interface; Id. fourth interface; le. fifth interface; If. sixth interface; 2. first lamp bead; 3. second lamp bead; 4. power supply; 5. first diode; 6. second diode; 7. third diode; 8. first resistor; 9. second resistor; 10. fourth diode; 11. fifth diode; 12. sixth diode; 13. third resistor; and 14. fourth resistor. Detailed Description of the Invention The following clearly and completely describes the technical solutions in embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Evidently, the described embodiments are merely some rather than all of the embodiments of the present invention. All other embodiments obtained by persons of ordinary’ skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. As shown in Figure 1 and Figure 2, the present invention provides a five-level color temperature adjustable circuit, including a five-level shift switch 1, a first lamp bead 2, and a second lamp bead 3. The first lamp bead 2 and the second lamp bead 3 have different color temperatures and are both LED lamp beads. The five-level shift switch 1 has six interfaces, respectively a first interface la, a second interface lb, a third interface 1c, a fourth interface Id, a fifth interface 1c, and a sixth interface If. The third interface Ic is connected to a negative electrode of a power supply 4. The first interface la is connected to one interface of the first lamp bead 2, and the other interface of the first lamp bead 2 is connected to a positive electrode of the power supply 4. The sixth interface If is connected to one interface of the second lamp bead 3, and the other interface of the second lamp bead 3 is connected to the positive electrode of the power supply 4. A control circuit module is arranged among the first interface la, the second interface lb, the third interface 1c, the fourth interface Id, the fifth interface le and the sixth interface If. The control circuit module includes a first circuit module and a second circuit module. The first circuit module includes a first diode 5, a second diode 6, a third diode 7, a first resistor 8, and a second resistor 9, where a positive electrode of the first diode 5 is connected to the first interface la, and a negative electrode of the first diode is connected to the second interface lb; a positive electrode of the second diode 6 is connected to the second interface lb, a negative electrode of the second diode is connected to one end of the second resistor 9, and die other end of the second resistor 9 is connected to the fourth interface Id; and a negative electrode of the third diode is connected to the second interface lb, a positive electrode of the third diode is connected to one end of the first resistor 8, and the other end of the first resistor 8 is connected to the fourth interface Id. The second circuit module includes a fourth diode 10, a fifth diode 11, a sixth diode 12, a third resistor 13, and a fourth resistor 14. where a positive electrode of the fourth diode 10 is connected to the sixth interface If, and a negative electrode of the fourth diode is connected to the fifth interface le; a positive electrode of the fifth diode 11 is connected to the fifth interface le, a negative electrode of the fifth diode is connected to one end of the fourth resistor 14, and the other end of the fourth resistor 14 is connected to the fourth interface Id; and a negative electrode of the sixth diode is connected to the fifth interface le, a positive electrode of the sixth diode is connected to one end of the third resistor 13, and the other end of the third resistor 13 is connected to the fourth interface Id. When the five-level shift switch 1 is at a first shift position, the third interface 1c is connected to the first interface la, and the first lamp bead 2 works. In this case, a current of the power supply 4 starts from the positive electrode of the power supply 4, flows through the first lamp bead 2, the first interface la. and the third interface Ic in sequence, and then returns to the negative electrode of the power supply 4. When the five-level shift switch 1 is at a second shift position, the third interface 1c is connected to the second interface lb, and the first lamp bead 2 and the second lamp bead 3 work. In this case, the current of the power supply 4, starting from the positive electrode of the power supply 4, is divided into two paths, where one path of current flows through the first lamp bead 2, the first diode 5, the second interface lb, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4; and the other path of current flows through the second lamp bead 3, the fourth diode 10, the fifth diode 11, the fourth resistor 14, the first resistor 8, the third diode, the second interface lb, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4. When the five-level shift switch 1 is at a third shift position, the third interface 1c is connected to the fourth interface Id, and the first lamp bead 2 and the second lamp bead 3 work. In this case, the current of the power supply 4, starting from the positive electrode of the power supply 4, is divided into two paths, where one path of current flows through the first lamp bead 2, the first diode 5, the second diode 6, the second resistor 9, the fourth interface Id, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4; and the other path of current flows through the second lamp bead 3, the fourth diode 10, the fifth diode 11, the fourth resistor 14, the fourth interface Id, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4. When the five-level shift switch 1 is at a fourth shift position, the third interface 1c is connected to the fifth interface le, and the first lamp bead 2 and the second lamp bead 3 work. In this case, the current of the power supply 4, starting from the positive electrode of the power supply 4, is divided into two paths, where one path of current flows through the first lamp bead 2, the first diode 5, the second diode 6, the second resistor 9, the third resistor 13, the sixth diode, the fifth interface le, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4; and the other path of current flows through the second lamp bead 3, the fourth diode 10, the fifth interface le, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4. When the five-level shift switch 1 is at a fifth shift position, die third interface 1c is connected to the sixth interface If, and the second lamp bead 3 works. In this case, the current of the power supply 4 starts from the positive electrode of the power supply 4, flows through the second lamp bead 3, the sixth interface If, and the third interface 1c in sequence, and then returns to the negative electrode of the power supply 4. In the present invention, the first lamp bead 2 and the second lamp bead 3 are loaded with two different color temperatures, and currents outputted to the first lamp bead 2 and the second lamp bead 3 with different color temperatures are adjusted according to requirements on color temperature, so color temperatures of different lights of the currents loaded in the first lamp bead 2 and the second lamp bead 3 are also different, and the five-level shift switch 1 is used to switch current output to drive the first lamp bead 2 and the second lamp bead 3 to output different color temperatures. Although the embodiments of the present invention have been illustrated and described, it can be understood by persons of ordinary skill in the art that various changes, modifications, replacements, and variations may be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and equivalents thereof.

Claims

1. A five-level color temperature adjustable circuit, characterized by comprising: a five-level shift switch, a first lamp bead, and a second lamp bead, wherein the first lamp bead and the second lamp bead have different color temperatures; the five-level shift switch has six interfaces, respectively a first interface, a second interface, a third interface, a fourth interface, a fifth interface, and a sixth interface; the third interface is connected to a negative electrode of a power supply; the first interface is connected to one interface of the first lamp bead, and the other interface of the first lamp bead is connected to a positive electrode of the power supply; the sixth interface is connected to one interface of the second lamp bead, and the other interface of the second lamp bead is connected to the positive electrode of the power supply; and control circuit modules are arranged among the first interface, the second interface, the third interface, the fourth interface, the fifth interface, and the sixth interface.

2. The five-level color temperature adjustable circuit according to claim 1, characterized in that when the five-level shift switch is at a first shift position, the third interface is connected to the first interface, and the first lamp bead works; when the five-level shift switch is at a second shift position, the third interface is connected to the second interface, and the first lamp bead and the second lamp bead work; when the five-level shift switch is at a third shift position, the third interface is connected to the fourth interface, and the first lamp bead and the second lamp bead work; when the five-level shift switch is at a fourth shift position, the third interface is connected to the fifth interface, and the first lamp bead and the second lamp bead work; and when the five-level shift switch is at a fifth shift position, the third interface is connected to the sixth interface, and the second lamp bead works.

3. The five-level color temperature adjustable circuit according to claim 1. characterized in that the control circuit module comprises a first circuit module and a second circuit module; the first circuit module comprises a first diode, a second diode, a third diode, a first resistor, and a second resistor, wherein a positive electrode of the first diode is connected to the first interface, and a negative electrode of the first diode is connected to the second interface; a positive electrode of the second diode is connected to the second interface, a negative electrode of the second diode is connected to one end of the second resistor, and the other end of the second resistor isconnected to the fourth interface; and a negative electrode of the third diode is connected to the second interface, a positive electrode of the third diode is connected to one end of the first resistor, and the other end of the first resistor is connected to the fourth interface.

4. The five-level color temperature adjustable circuit according to claim 3, characterized in that the second circuit module comprises a fourth diode, a fifth diode, a sixth diode, a third resistor, and a fourth resistor, wherein a positive electrode of the fourth diode is connected to the sixth interface, and a negative electrode of the fourth diode is connected to the fifth interface; a positive electrode of the fifth diode is connected to the fifth interface, a negative electrode of the fifth diode is connected to one end of the fourth resistor, and the other end of the fourth resistor is connected to the fourth interface; and a negative electrode of the sixth diode is connected to the fifth interface, a positive electrode of the sixth diode is connected to one end of the third resistor, and the other end of the third resistor is connected to the fourth interface.

5. The five-level color temperature adjustable circuit according to claim 1, characterized in that the first lamp bead and the second lamp bead are both LED lamp beads.

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