Double-module dimming and color adjusting circuit and LED lamp

Abstract

The utility model provides a double-module light and color adjusting circuit and an LED lamp, the circuit comprises a switching circuit, a light and color adjusting circuit group, a direct current conversion circuit, a color adjusting driving circuit and a lighting circuit, and the light and color adjusting circuit group comprises a first light and color adjusting circuit and a second light and color adjusting circuit. The switching circuit is electrically connected with the first dimming and color adjusting circuit and the double second dimming and color adjusting circuits, the direct current conversion circuit and the color adjusting driving circuit are electrically connected with the first dimming and color adjusting circuit and the double second dimming and color adjusting circuits, and the lighting circuit is electrically connected with the direct current conversion circuit and the color adjusting driving circuit. When the module dimming and color adjusting circuit is powered on, the second dimming and color adjusting circuit controls lighting of the lamp in a wireless mode, an infrared mode and the like, and when control of the first dimming and color adjusting circuit is changed, the control end of the second dimming and color adjusting circuit outputs a signal to conduct the switching circuit, so that the first dimming and color adjusting circuit controls lighting of the lamp through power-on work of the switching circuit. And double-module lamp control is realized.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lighting, and in particular, to a dual-module dimming and color temperature adjusting circuit and an LED lamp. Background Art

[0002] The two parameters of light brightness and color temperature are the main parameters of lighting fixtures. For the control of LED lamps, the two parameters of light brightness and color temperature will be mainly considered.

[0003] With the development of LED technology, dimmable LED lamps have emerged. However, most dimming / color temperature adjusting products on the market generally only support one dimming method (such as the prior arts CN210491281U, CN217037504U, etc.) to achieve the functions of adjusting the brightness and color temperature of the lamp, and cannot achieve multiple dimming methods. Therefore, the dimming methods in the prior art are relatively single. Summary of the Utility Model

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a dual-module dimming and color temperature adjusting circuit and an LED lamp that can achieve a dual-module dimming method.

[0005] The purpose of the present disclosure is achieved by the following technical solutions:

[0006] A dual-module dimming and color temperature adjusting circuit, comprising:

[0007] A switch circuit for connecting to a standard power supply;

[0008] A dimming and color temperature adjusting circuit group, including a first dimming and color temperature adjusting circuit and a second dimming and color temperature adjusting circuit. The power connection end of the first dimming and color temperature adjusting circuit is connected to the voltage output end of the switch circuit, the control end of the second dimming and color temperature adjusting circuit is connected to the signal receiving end of the switch circuit, and the power supply end of the second dimming and color temperature adjusting circuit is also used to connect to a standard power supply;

[0009] A direct current conversion circuit, the receiving end of the direct current conversion circuit is respectively connected to the first dimming end of the first dimming and color temperature adjusting circuit and the second dimming end of the second dimming and color temperature adjusting circuit;

[0010] A color temperature adjusting drive circuit, the receiving end of the color temperature adjusting drive circuit is respectively connected to the first color temperature adjusting end of the first dimming and color temperature adjusting circuit and the second color temperature adjusting end of the second dimming and color temperature adjusting circuit;

[0011] The lighting circuit includes a first field-effect transistor, a second field-effect transistor, a first light-emitting diode, and a second light-emitting diode. The negative voltage terminal of the DC conversion circuit is connected to the first end of the first field-effect transistor and the first end of the second field-effect transistor respectively. The positive voltage terminal of the DC conversion circuit is connected to the anode of the first light-emitting diode and the anode of the second light-emitting diode respectively. The cathode of the first light-emitting diode is connected to the second end of the first field-effect transistor. The control terminal of the first field-effect transistor is connected to one output end of the color adjustment driving circuit. The cathode of the second light-emitting diode is connected to the second end of the second field-effect transistor. The control terminal of the second field-effect transistor is connected to the other output end of the color adjustment driving circuit.

[0012] In one embodiment, the switch circuit includes a first resistor, a second resistor, a first control transistor, and a second control transistor. The two ends of the first resistor are connected to the control terminal of the second dimming and color adjustment circuit and the control terminal of the first control transistor respectively. The first end of the first control transistor is connected to the first end of the second resistor and the control terminal of the second control transistor respectively. The second end of the first control transistor is grounded. The first end of the second control transistor is connected to the second end of the second resistor. The second end of the second resistor is connected to a standard power supply. The second end of the second control transistor is connected to the power connection terminal of the first dimming and color adjustment circuit.

[0013] In one embodiment, the first control transistor is an NPN-type triode.

[0014] In one embodiment, the second control transistor is a P-type field-effect transistor.

[0015] In one embodiment, the dual-module dimming and color adjustment circuit further includes a first diode. The anode of the first diode is connected to one color adjustment end of the first dimming and color adjustment circuit. The cathode of the first diode is connected to the receiving end of the color adjustment driving circuit.

[0016] In one embodiment, the dual-module dimming and color adjustment circuit further includes a second diode. The anode of the second diode is connected to the other color adjustment end of the second dimming and color adjustment circuit. The cathode of the second diode is connected to the receiving end of the color adjustment driving circuit.

[0017] In one embodiment, the dual-module dimming and color adjustment circuit further includes a third diode. The anode of the third diode is connected to one dimming end of the first dimming and color adjustment circuit. The cathode of the third diode is connected to the receiving end of the DC conversion circuit.

[0018] In one embodiment, the dual-module dimming and color adjustment circuit further includes a fourth diode. The anode of the fourth diode is connected to the other dimming end of the second dimming and color adjustment circuit. The cathode of the fourth diode is connected to the receiving end of the DC conversion circuit.

[0019] In one embodiment, the first light-emitting diode is a cold-light light-emitting diode.

[0020] In one embodiment, the second light-emitting diode is a warm-light light-emitting diode.

[0021] An LED lamp includes the dual-module dimming and color-tuning circuit described in any of the above embodiments.

[0022] Compared with the prior art, the present disclosure has at least the following advantages:

[0023] When the dual-module dimming and color-tuning circuit is powered on, the second dimming and color-tuning circuit controls the lighting of the lamp by means of wireless, infrared remote control, etc. When it is necessary to change the control of the first dimming and color-tuning circuit, the control terminal of the second dimming and color-tuning circuit outputs a signal to turn on the switch circuit, so that the first dimming and color-tuning circuit is powered on through the switch circuit to control the lighting of the lamp, thereby realizing the dual-module control of the lamp lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a circuit diagram of a dual-module dimming and color-tuning circuit in an embodiment.

[0026] Reference numerals: 10, dual-module dimming and color-tuning circuit; 100, switch circuit; 200, dimming and color-tuning circuit group; 210, first dimming and color-tuning circuit; 220, second dimming and color-tuning circuit; 300, direct current conversion circuit; 400, color-tuning drive circuit; 500, lighting circuit; R1, first resistor; R2, second resistor; Q3, first control tube; Q4, second control tube; Q1, first field-effect tube; Q2, second field-effect tube; D1, first diode; D2, second diode; D3, third diode; D4, fourth diode; LED1, first light-emitting diode; LED2, second light-emitting diode. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present disclosure more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this disclosure belongs. The terms used in the specification of this disclosure herein are only for the purpose of describing specific implementations and are not intended to limit this disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] To better understand the technical solutions and beneficial effects of this disclosure, the following further describes this disclosure in detail with specific embodiments:

[0031] Please refer to Figure 1 , which is a dual-module dimming and color mixing circuit 10 according to an embodiment of the present utility model, including a switch circuit 100, a dimming and color mixing circuit group 200, a direct current conversion circuit 300, a color mixing driving circuit 400, and an illumination circuit 500.

[0032] The switch circuit 100 is used to connect to a standard power supply. In this embodiment, the switch circuit 100 includes a first resistor R1, a second resistor R2, a first control transistor Q3, and a second control transistor Q4. The first end of the first resistor R1 is connected to the control end of the first control transistor Q3. The first end of the first control transistor Q3 is respectively connected to the first end of the second resistor R2 and the control end of the second control transistor Q4. The second end of the first control transistor Q3 is grounded. The first end of the second control transistor Q4 is connected to the second end of the second resistor R2, and the second end of the second resistor R2 is connected to the standard power supply.

[0033] The dimming and color mixing circuit group 200 includes a first dimming and color mixing circuit 210 and a second dimming and color mixing circuit 220. The power connection end of the first dimming and color mixing circuit 210 is connected to the voltage output end of the switch circuit 100, that is, the second end of the second control transistor Q4. The control end CT of the second dimming and color mixing circuit 220 is connected to the signal receiving end of the switch circuit 100, that is, the second end of the first resistor R1. The power connection end of the second dimming and color mixing circuit 220 is also used to connect to the standard power supply, so as to indirectly control the switch state of the first dimming and color mixing circuit 210 through its control end CT when the second dimming and color mixing circuit 220 is powered on.

[0034] The receiving end DIM of the DC conversion circuit 300 is respectively connected to the first dimming end DIM1 of the first dimming and color mixing circuit 210 and the second dimming end DIM2 of the second dimming and color mixing circuit 220, so that the first dimming and color mixing circuit 210 controls the illumination brightness through its first dimming end DIM1 when powered on, and the second dimming and color mixing circuit 220 controls the illumination brightness through its second dimming end DIM2 when powered on.

[0035] The receiving end CCT of the color mixing driving circuit 400 is respectively connected to the first color mixing end CCT1 of the first dimming and color mixing circuit 210 and the second color mixing end CCT2 of the second dimming and color mixing circuit 220, so that the first dimming and color mixing circuit 210 controls the illumination color temperature through the color mixing signal state of its first color mixing end CCT1 when powered on, and the second dimming and color mixing circuit 220 controls the illumination color temperature through the color mixing signal state of its second color mixing end CCT2 when powered on.

[0036] The lighting circuit 500 includes a first field effect transistor Q1, a second field effect transistor Q2, a first light emitting diode LED1 and a second light emitting diode LED2. The negative voltage end of the DC conversion circuit 300 is respectively connected to the first end of the first field effect transistor Q1 and the first end of the second field effect transistor Q2. The positive voltage end of the DC conversion circuit 300 is respectively connected to the anode of the first light emitting diode LED1 and the anode of the second light emitting diode LED2. The cathode of the first light emitting diode LED1 is connected to the second end of the first field effect transistor Q1. The control end of the first field effect transistor Q1 is connected to the first output end GATE1 of the color mixing driving circuit 400. The cathode of the second light emitting diode LED2 is connected to the second end of the second field effect transistor Q2. The control end of the second field effect transistor Q2 is connected to the second output end GATE2 of the color mixing driving circuit 400.

[0037] In this embodiment, when the dual-module dimming and color mixing circuit 10 is powered on, the second dimming and color mixing circuit 220 controls the lighting of the lamp by means of wireless, infrared remote control, etc. When it is necessary to change the control of the first dimming and color mixing circuit 210, the control end of the second dimming and color mixing circuit 220 outputs a signal to turn on the switch circuit 100, so that the first dimming and color mixing circuit 210 is powered on through the switch circuit 100 to control the lighting of the lamp, thereby realizing the dual-module control of the lighting of the lamp.

[0038] It can be understood that when the dual-module dimming and color temperature adjustment circuit 10 is powered on, the default state is that the second dimming and color temperature adjustment circuit 220 works, and its control terminal is at a low level, so that the first dimming and color temperature adjustment circuit 210 does not work. The second dimming and color temperature adjustment circuit 220 outputs a color temperature adjustment signal to the color temperature adjustment driving circuit 400 to be converted into two complementary color temperature adjustment signals, and the second dimming and color temperature adjustment circuit 220 outputs a dimming signal to the DC conversion circuit 300 for dimming; when switching to the first dimming and color temperature adjustment circuit 210 to work, the second dimming and color temperature adjustment circuit 220 outputs a high level at its control terminal, and closes the output of the dimming signal and the color temperature adjustment signal of the second dimming and color temperature adjustment circuit 220. The current will sequentially turn on the first control transistor Q3 and the second control transistor Q4, so that the first dimming and color temperature adjustment circuit 210 is powered on. At this time, the first dimming and color temperature adjustment circuit 210 outputs a dimming signal and a color temperature adjustment signal at the same time and transmits them to the DC conversion circuit 300 and the color temperature adjustment driving circuit 400 respectively to control the lighting of the lamp; when switching back to the second dimming and color temperature adjustment circuit 220 to work, the control terminal of the second dimming and color temperature adjustment circuit 220 outputs a low level to stop the first dimming and color temperature adjustment circuit 210 from working. During this period, the second dimming and color temperature adjustment circuit 220 can control the lighting of the lamp through wireless, infrared and other remote control operations. The first dimming and color temperature adjustment circuit 210 controls the switch circuit 100 to be turned on through the enable signal of the second dimming and color temperature adjustment circuit 220 to control the lighting of the lamp. Specifically, the power-on voltage can be adjusted through the switch circuit 100.

[0039] Among them, the control terminal CT of the second dimming and color temperature adjustment circuit 220 is used to control the on-off state of the switch circuit 100, so as to further determine whether the first dimming and color temperature adjustment circuit 210 is powered on. The dimming terminal DIM1 of the first dimming and color temperature adjustment circuit 210 and the dimming terminal DIM2 of the second dimming and color temperature adjustment circuit 220 are used to adjust the lighting brightness of the first light-emitting diode LED1 and the second light-emitting diode LED2 according to the duty cycle of the output PWM wave through the receiving terminal DIM of the DC conversion circuit 300. The color temperature adjustment driving circuit 400 is used to convert the color temperature adjustment signal into two complementary level signals according to the level signal state of the color temperature adjustment terminal CCT1 of the first dimming and color temperature adjustment circuit 210 or the color temperature adjustment terminal CCT2 of the second dimming and color temperature adjustment circuit 220, and control the first field-effect transistor Q1 and the second field-effect transistor Q2 according to the current level signal state, so that the color temperature of the first light-emitting diode LED1 and the second light-emitting diode LED2 can be adjusted.

[0040] Furthermore, the first light-emitting diode LED1 is a cold-light light-emitting diode, and the second light-emitting diode LED2 is a warm-light light-emitting diode. Among them, the first field-effect transistor Q1 is a cold-light brightness adjustment switch transistor, and the second field-effect transistor Q2 is a warm-light brightness adjustment switch transistor. The warm-light and cold-light color temperature adjustment can be realized by adjusting the conduction duty cycle of one or both of the first field-effect transistor Q1 and the second field-effect transistor Q2. Of course, in another embodiment, the first light-emitting diode LED1 is a warm-light light-emitting diode, and the second light-emitting diode LED2 is a cold-light light-emitting diode.

[0041] In this embodiment, the first control transistor Q3 is an NPN bipolar junction transistor, with its first end being the collector, the second end being the emitter, and the control end being the base; the second control transistor Q4 is a P-type field effect transistor, with its first end being the source, the second end being the drain, and the control end being the gate; the first field effect transistor Q1 and the second field effect transistor Q2 are both N-type field effect transistors. The first end of the first field effect transistor Q1 is the source, the second end is the drain, and the control end is the gate; the first end of the second field effect transistor Q2 is the source, the second end is the drain, and the control end is the gate.

[0042] To ensure that the color mixing signal can be transmitted unidirectionally to the color mixing driving circuit 400, the dual-module dimming and color mixing circuit 10 further includes a first diode D1. The anode of the first diode D1 is connected to the color mixing end of the first dimming and color mixing circuit 210, and the cathode of the first diode D1 is connected to the receiving end of the color mixing driving circuit 400.

[0043] Furthermore, the dual-module dimming and color mixing circuit 10 further includes a second diode D2. The anode of the second diode D2 is connected to the second color mixing end of the second dimming and color mixing circuit 220, and the cathode of the second diode D2 is connected to the receiving end of the color mixing driving circuit 400.

[0044] It can be understood that the first diode D1 and the second diode D2 are isolation diodes for preventing the color mixing signal from being coupled in, which are used to prevent the color mixing level signals emitted by the first dimming and color mixing circuit 210 and the second dimming and color mixing circuit 220 from flowing back into each other, and ensure that the current flows unidirectionally to the color mixing driving circuit 400 so that the color mixing driving circuit 400 can convert the color mixing signal into two complementary level signals.

[0045] To ensure that the dimming signal can be transmitted unidirectionally to the DC conversion circuit 300, the dual-module dimming and color mixing circuit 10 further includes a third diode D3. The anode of the third diode D3 is connected to the dimming end of the first dimming and color mixing circuit 210, and the cathode of the third diode D3 is connected to the receiving end of the DC conversion circuit 300.

[0046] Furthermore, the dual-module dimming and color mixing circuit 10 further includes a fourth diode D4. The anode of the fourth diode D4 is connected to the second dimming end of the second dimming and color mixing circuit 220, and the cathode of the fourth diode D4 is connected to the receiving end of the DC conversion circuit 300.

[0047] It can be understood that the third diode D3 and the fourth diode D4 are isolation diodes for preventing the dimming signal from being coupled in, which are used to prevent the dimming level signals emitted by the first dimming and color mixing circuit 210 and the second dimming and color mixing circuit 220 from flowing back into each other, and ensure that the current flows unidirectionally to the DC conversion circuit 300.

[0048] The present disclosure also provides an LED lamp, including the dual-module dimming and color mixing circuit 10 of any one of the above embodiments.

[0049] Compared with the prior art, the present disclosure has at least the following advantages:

[0050] When the dual-module dimming and color-tuning circuit 10 is powered on, the second dimming and color-tuning circuit 220 controls the lighting of the lamp by means of wireless, infrared remote control, etc. When it is necessary to change the control of the first dimming and color-tuning circuit 210, the control terminal of the second dimming and color-tuning circuit 220 outputs a signal to turn on the switch circuit 100, so that the first dimming and color-tuning circuit 210 is powered on through the switch circuit 100 to control the lighting of the lamp, thereby realizing the dual-module control of the lighting of the lamp.

[0051] The above-described embodiments merely represent several implementation manners of the present disclosure, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the disclosed patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A dual-module dimming and color adjustment circuit, characterized in that: include: Switching circuit, used to connect to standard power supply; A dimming and color adjustment circuit group includes a first dimming and color adjustment circuit and a second dimming and color adjustment circuit, wherein a power terminal of the first dimming and color adjustment circuit is connected to a voltage output terminal of the switch circuit, a control terminal of the second dimming and color adjustment circuit is connected to a signal receiving terminal of the switch circuit, and a power supply terminal of the second dimming and color adjustment circuit is also used to connect to a standard power supply; A direct current conversion circuit, wherein a receiving end of the direct current conversion circuit is respectively connected to a dimming end of the first dimming and color adjustment circuit and to dimming ends of the second dimming and color adjustment circuit; A color adjustment driving circuit, wherein a receiving end of the color adjustment driving circuit is respectively connected to a color adjustment end of the first dimming and color adjustment circuit and a color adjustment end of the second dimming and color adjustment circuit; The lighting circuit includes a first field effect tube, a second field effect tube, a first light-emitting tube and a second light-emitting tube. The negative voltage end of the direct current conversion circuit is respectively connected to the first end of the first field effect tube and the first end of the second field effect tube, the positive voltage end of the direct current conversion circuit is respectively connected to the anode of the first light-emitting tube and the anode of the second light-emitting tube, the cathode of the first light-emitting tube is connected to the second end of the first field effect tube, the control end of the first field effect tube is connected to one output end of the color adjustment drive circuit, the cathode of the second light-emitting tube is connected to the second end of the second field effect tube, and the control end of the second field effect tube is connected to two output ends of the color adjustment drive circuit.

2. The dual-module dimming and color adjustment circuit according to claim 1, characterized in that: The switching circuit includes a first resistor, a second resistor, a first control tube and a second control tube. The two ends of the first resistor are respectively connected to the control end of the second dimming and color adjustment circuit and the control end of the first control tube. The first end of the first control tube is respectively connected to the first end of the second resistor and the control end of the second control tube. The second end of the first control tube is grounded. The first end of the second control tube is connected to the second end of the second resistor. The second end of the second resistor is connected to a standard power supply. The second end of the second control tube is connected to the power supply end of the first dimming and color adjustment circuit.

3. The dual-module dimming and color adjustment circuit according to claim 2, characterized in that: The first control tube is an NPN type transistor.

4. The dual-module dimming and color adjustment circuit according to claim 2, characterized in that: The second control tube is a P-type field effect tube.

5. The dual-module dimming and color adjustment circuit according to claim 1, characterized in that: The dual-module dimming and color adjustment circuit also includes a first diode, an anode of the first diode is connected to a color adjustment end of the first dimming and color adjustment circuit, and a cathode of the first diode is connected to a receiving end of the color adjustment driving circuit.

6. The dual-module dimming and color adjustment circuit according to claim 1, characterized in that: The dual-module dimming and color adjustment circuit also includes a second diode, an anode of the second diode is connected to two color adjustment terminals of the second dimming and color adjustment circuit, and a cathode of the second diode is connected to a receiving terminal of the color adjustment driving circuit.

7. The dual-module dimming and color adjustment circuit according to claim 1, characterized in that: The dual-module dimming and color adjustment circuit also includes a third diode, an anode of the third diode is connected to a dimming end of the first dimming and color adjustment circuit, and a cathode of the third diode is connected to a receiving end of the DC conversion circuit.

8. The dual-module dimming and color adjustment circuit according to claim 1, characterized in that: The dual-module dimming and color adjustment circuit also includes a fourth diode, an anode of the fourth diode is connected to the dimming terminals of the second dimming and color adjustment circuit, and a cathode of the fourth diode is connected to the receiving end of the DC conversion circuit.

9. The dual-module dimming and color adjustment circuit according to claim 1, characterized in that: The first light emitting tube is a cold light emitting diode; and / or, The second light emitting tube is a warm light emitting diode.

10. An LED lamp, characterized in that: It comprises the dual-module dimming and color adjustment circuit as described in any one of claims 1 to 9.

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