Illumination control circuit and lighting fixture

Abstract

The present invention discloses an illumination control circuit and a lighting fixture. The input end and the output end of the first light source are respectively connected to the positive electrode of the power supply and the drain of the first MOS transistor; the input end and the output end of the second light source are respectively connected to the positive electrode of the power supply and the drain of the second MOS transistor; the source electrodes of the first MOS transistor and the second MOS transistor are both connected to the negative electrode of the power supply; the output end of the toggle switch is connected to the negative electrode of the power supply; the first input end of the toggle switch is respectively connected to the gate of the first MOS transistor and the positive electrode of the power supply; the second input end of the toggle switch is respectively connected to the gate of the second MOS transistor and the positive electrode of the power supply; the output end of the toggle switch can be connected to the first input end or the second input end of the toggle switch, or the output end of the toggle switch is not connected to any one of the first input end and the second input end of the toggle switch. The illumination control circuit and the lighting fixture provided by the present invention can provide illumination of different color temperatures, enrich the usage scenarios, and improve the usage quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of lighting, and specifically relates to a lighting control circuit and a lighting fixture. Background Art

[0002] With the development of society, LED lights have gradually entered people's lives. The application of LED lights is very extensive and is used in many public places, such as billboards, roads, railway tunnels, bridges, squares, buildings, etc.

[0003] However, there are still some deficiencies in the currently used LEDs. For example, when most LED lights are used for lighting, they can only provide light of one color temperature and cannot provide light of corresponding color temperatures in different application scenarios. If you want to change the light of different color temperatures, you can only replace different lighting fixtures, which affects the user experience. Summary of the Invention

[0004] In view of this, the present invention provides a lighting control circuit and a lighting fixture, which can change the color temperature value of the lighting fixture according to different application scenarios and meet the lighting needs of users.

[0005] In a first aspect, the present invention provides a lighting control circuit, which includes a power supply, a toggle switch, a first light source, a second light source, a first MOS transistor, and a second MOS transistor;

[0006] The input end and the output end of the first light source are respectively connected to the positive pole of the power supply and the drain of the first MOS transistor;

[0007] The input end and the output end of the second light source are respectively connected to the positive pole of the power supply and the drain of the second MOS transistor;

[0008] The source of the first MOS transistor and the source of the second MOS transistor are both connected to the negative pole of the power supply;

[0009] The toggle switch includes a first input end, a second input end, and an output end. The output end of the toggle switch is connected to the negative pole of the power supply;

[0010] The first input end of the toggle switch is respectively connected to the gate of the first MOS transistor and the positive pole of the power supply;

[0011] The second input end of the toggle switch is respectively connected to the gate of the second MOS transistor and the positive pole of the power supply;

[0012] Wherein, the output terminal of the toggle switch can be connected to the first input terminal of the toggle switch, or the output terminal of the toggle switch can be connected to the second input terminal of the toggle switch, or the output terminal of the toggle switch is not connected to any of the first input terminal and the second input terminal of the toggle switch.

[0013] Further, when the output terminal of the toggle switch is connected to the first input terminal of the toggle switch, the first MOS transistor is turned off, the second MOS transistor is turned on, and the second light source is lit.

[0014] Further, when the output terminal of the toggle switch is connected to the second input terminal of the toggle switch, the second MOS transistor is turned off, the first MOS transistor is turned on, and the first light source is lit.

[0015] Further, when the output terminal of the toggle switch is not connected to any of the first input terminal and the second input terminal of the toggle switch, both the second MOS transistor and the first MOS transistor are turned on, and the first light source and the second light source are lit simultaneously.

[0016] Further, the first light source and the second light source are LED light sources with different color temperatures.

[0017] Further, a first resistor is provided between the input terminals of the first light source and the second light source and the positive pole of the power supply.

[0018] Further, a second resistor is provided between the gate of the first MOS transistor and the positive pole of the power supply, and the first input terminal of the toggle switch is located between the second resistor and the gate of the first MOS transistor.

[0019] Further, a third resistor is provided between the gate of the second MOS transistor and the positive pole of the power supply, and the second input terminal of the toggle switch is located between the third resistor and the gate of the second MOS transistor.

[0020] Further, a fourth resistor is provided between the source of the first MOS transistor and the negative pole of the power supply, and / or a fifth resistor is provided between the source of the second MOS transistor and the negative pole of the power supply.

[0021] In a second aspect, an embodiment of the present invention further provides a lamp, including the lighting control circuit as described above.

[0022] The lighting control circuit and lamp provided by the embodiments of the present invention enable the first MOS transistor and / or the second MOS transistor to conduct by connecting the output terminal of the toggle switch to the first input terminal or the second input terminal of the toggle switch, or not connecting to both ends, so as to light the first light source and / or the second light source, thereby providing lighting of different color temperatures, enriching the usage scenarios of the lamp, and improving the usage quality of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0025] In the drawings:

[0026] Figure 1 FIG. is a circuit connection diagram of a lighting control circuit provided by an embodiment of the present invention;

[0027] Figure 2 FIG. is another circuit connection diagram of a lighting control circuit provided by an embodiment of the present invention;

[0028] Figure 3 FIG. is another circuit connection diagram of a lighting control circuit provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will detail the embodiments of the present invention in conjunction with the drawings and embodiments, so as to fully understand how the present invention applies technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0030] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but rather use the difference in the functions of the components as the criterion for distinction. As used throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "comprising but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" or "electrically connected" herein includes any direct and indirect means of electrical coupling. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device can be directly electrically coupled to the second device, or indirectly electrically coupled to the second device through other devices or coupling means. The following description in the specification is the preferred embodiment for implementing the present invention, but the description is for the purpose of explaining the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be subject to what is defined by the appended claims.

[0031] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or system comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or system comprising the element. Specific embodiments

[0033] Please refer to Figure 1 , which is a circuit diagram of a lighting control circuit provided by an embodiment of the present invention. The lighting control circuit includes a power supply P, a toggle switch K, a first light source L1, a second light source L2, a first MOS transistor Q1, and a second MOS transistor Q2;

[0034] The input terminal and the output terminal of the first light source L1 are respectively connected to the positive electrode P1 of the power supply P and the drain N of the first MOS transistor Q1;

[0035] The input terminal and the output terminal of the second light source L2 are respectively connected to the positive electrode P1 of the power supply P and the drain N of the second MOS transistor Q2;

[0036] The source S of the first MOS transistor Q1 and the source S of the second MOS transistor Q2 are both connected to the negative electrode P2 of the power supply P;

[0037] The toggle switch K includes a first input terminal K1, a second input terminal K2, and an output terminal K0. The output terminal K0 of the toggle switch K is connected to the negative pole P2 of the power supply P;

[0038] The first input terminal K1 of the toggle switch K is respectively connected to the gate G of the first MOS transistor Q1 and the positive pole P1 of the power supply P;

[0039] The second input terminal K2 of the toggle switch K is respectively connected to the gate G of the second MOS transistor Q2 and the positive pole P1 of the power supply P;

[0040] Wherein, the output terminal K0 of the toggle switch K can be connected to the first input terminal K1 of the toggle switch K, or the output terminal K0 of the toggle switch K can be connected to the second input terminal K2 of the toggle switch K, or the output terminal K0 of the toggle switch K is not connected to any one of the first input terminal K1 and the second input terminal K2 of the toggle switch K.

[0041] Specifically, the first light source L1 and the second light source L2 are connected in parallel between the positive pole P1 and the negative pole P2 of the power supply P, and an MOS transistor is provided on each respective light source circuit. Here, the MOS transistor is an N-channel MOS transistor, that is, the drain N and the source S of the first MOS transistor Q1 are respectively connected to the output terminal of the first light source L1 and the negative pole P2 of the power supply P; the drain N and the source S of the second MOS transistor Q2 are respectively connected to the output terminal of the second light source L2 and the negative pole P2 of the power supply P; the toggle switch K includes two input terminals and one output terminal, that is, the first input terminal K1, the second input terminal K2, and the output terminal K0. The output terminal K0 of the toggle switch K can be connected to the first input terminal K1 to make the toggle switch K closed; it can also be connected to the second input terminal K2 to make the toggle switch K closed; of course, it can also not be connected to any one of the first input terminal K1 and the second input terminal K2, and at this time the toggle switch is in an open state.

[0042] The output terminal K0 of the toggle switch K is connected to the negative pole P2 of the power supply P, and the first input terminal K1 is connected to the circuit between the positive pole P1 of the power supply P and the gate of the first MOS transistor Q1, that is, the first input terminal K1 of the toggle switch K is respectively connected to the gate G of the first MOS transistor Q1 and the positive pole P1 of the power supply P; the second input terminal K2 is connected to the circuit between the positive pole P1 of the power supply P and the gate of the second MOS transistor Q2, that is, the second input terminal K2 of the toggle switch K is respectively connected to the gate G of the second MOS transistor Q2 and the positive pole P1 of the power supply P.

[0043] The toggle switch K here is a boat-shaped toggle switch. As shown in the figure, the toggle switch K can be closed in either of the left and right directions, so that the output terminal K0 of the toggle switch K can be connected to the first input terminal K1 of the toggle switch K, or the output terminal K0 of the toggle switch K can be connected to the second input terminal K2 of the toggle switch K; the toggle switch K can also maintain the middle position without closing in either direction, that is, the output terminal K0 of the toggle switch K is not connected to any of the first input terminal K1 and the second input terminal K2 of the toggle switch K.

[0044] Further, when the output terminal K0 of the toggle switch K is connected to the first input terminal K1 of the toggle switch K, the first MOS transistor Q1 is cut off, the second MOS transistor Q2 is turned on, and the second light source L2 is lit.

[0045] Specifically, please refer to Figure 2 In a feasible implementation manner of the embodiment of the present invention, the output terminal K0 of the toggle switch K closes to the left, so that the output terminal K0 of the toggle switch K is connected to the first input terminal K1 of the toggle switch K, that is, the gate of the first MOS transistor Q1 is short-circuited with the negative pole P2 of the power supply P, thereby reducing the gate voltage of the first MOS transistor Q1, so that the difference between the gate voltage G and the source voltage S of the first MOS transistor Q1 is less than the threshold voltage of the first MOS transistor Q1. At this time, the first MOS transistor Q1 is in the cut-off state, and the current flowing out of the first light source L1 cannot flow to the negative pole P2 of the power supply P, that is, the first light source L1 is in an open circuit state and cannot be lit.

[0046] At this time, the gate of the second MOS transistor Q2 is not short-circuited with the negative pole P2 of the power supply P, and the difference between the gate voltage G and the source voltage S of the second MOS transistor Q2 is greater than the threshold voltage of the second MOS transistor Q2. At this time, the second MOS transistor Q2 is in the on state, and the current flowing out of the second light source L2 can smoothly flow to the negative pole P2 of the power supply P, that is, the second light source L2 is in a conducting state and is lit.

[0047] In addition, when the output terminal K0 of the toggle switch K is connected to the second input terminal K2 of the toggle switch K, the second MOS transistor Q2 is cut off, the first MOS transistor Q1 is turned on, and the first light source L1 is lit.

[0048] Specifically, please refer to Figure 3, in another feasible implementation manner of the embodiment of the present invention, the output terminal K0 of the toggle switch K closes to the right, so that the output terminal K0 of the toggle switch K is connected to the second input terminal K2 of the toggle switch K, that is, the gate G of the second MOS transistor Q2 is short-circuited with the negative pole P2 of the power supply P, thereby reducing the voltage of the gate G of the second MOS transistor Q2, so that the difference between the voltage of the gate G of the second MOS transistor Q2 and the voltage of the source S of the second MOS transistor Q2 is less than the threshold voltage of the second MOS transistor Q2. At this time, the second MOS transistor Q2 is in the cut-off state, and the current flowing out of the second light source L2 cannot flow to the negative pole P2 of the power supply P, that is, the second light source L2 is in an open circuit state and cannot be lit.

[0049] At this time, the gate of the first MOS transistor Q1 is not short-circuited with the negative pole P2 of the power supply P, and the difference between the gate G voltage and the source S voltage of the first MOS transistor Q1 is greater than the threshold voltage of the first MOS transistor Q1. At this time, the first MOS transistor Q1 is in the conducting state, and the current flowing out of the first light source L1 can smoothly flow to the negative pole P2 of the power supply P, that is, the first light source L1 is in a conducting state and is lit.

[0050] Furthermore, when the output terminal K0 of the toggle switch K is not connected to any one of the first input terminal K1 and the second input terminal K2 of the toggle switch K, both the second MOS transistor Q2 and the first MOS transistor Q1 are conducting, and the first light source L1 and the second light source L2 are lit simultaneously.

[0051] Specifically, please refer to Figure 1 , in the third feasible implementation manner of the embodiment of the present invention, the output terminal K0 of the toggle switch K maintains the middle open state, that is, the output terminal K0 of the toggle switch K is not connected to any one of the first input terminal K1 and the second input terminal K2 of the toggle switch K. At this time, the circuits between the gate G of the first MOS transistor Q1 and the gate G of the second MOS transistor Q2 and the negative pole P2 of the power supply P are in an open circuit state. At this time, the differences between the voltages of the gates G of the first MOS transistor Q1 and the second MOS transistor Q2 and the voltages of their respective sources S are greater than the threshold voltages of their respective MOS transistors. At this time, both the first MOS transistor Q1 and the second MOS transistor Q2 are in the conducting state, that is, the circuits where the first light source L1 and the second light source L2 are located both belong to the conducting state, and at this time, the first light source L1 and the second light source L2 can be lit simultaneously.

[0052] Further, the first light source L1 and the second light source L2 are LED light sources with different color temperatures.

[0053] Specifically, in one preferred embodiment of the present invention, the color temperature value of the first light source L1 is 3000K, and the color temperature value of the second light source L2 is 6500K. When the toggle switch K is closed to the left, the first light source L1 is in an open circuit state and cannot be lit, and the second light source L2 is in a closed circuit state and is lit. That is, the color temperature value of the lamp at this time is 6500K. When the toggle switch K is closed to the right, the second light source L2 is in an open circuit state and cannot be lit, and the first light source L1 is in a closed circuit state and is lit. That is, the color temperature value of the lamp at this time is 3000K. When the toggle switch K remains in the middle and is not closed, the first light source L1 and the second light source L2 are both in a closed circuit state and are lit simultaneously. That is, the color temperature value of the lamp at this time is a mixed value of 3000K and 6500K, between 3000K and 6500K, such as 5000K. Of course, in actual applications, according to different requirements, the color temperature values of the first light source L1 and the second light source L2 can also be adjusted accordingly. The embodiments of the present invention do not make specific limitations.

[0054] In this way, when using the lamp, only by toggling the toggle switch K in the lighting control circuit to different positions, the lighting color temperature of the lamp can be changed, so that the lamp can better adapt to different lighting scenarios. In addition, the color temperature of the lamp can be changed before installation, reducing the inventory pressure of the supplier. At the same time, it can ensure that the price of the lamp will not increase too much and has achieved good results in actual mass production in the factory.

[0055] Here, it should be noted that the first light source L1 and the second light source L2 are respectively connected to the corresponding circuits in the form of multiple LED lamp beads connected in parallel or in series. The embodiments of the present invention do not make too many limitations on their specific connection forms.

[0056] In addition, in other preferred embodiments of the present invention, the models of the first MOS transistor Q1 and the second MOS transistor Q2 can be any one of 2N60 and 2N65 tubes, etc.

[0057] Furthermore, in order to adjust the current magnitude of the lighting control circuit and ensure the safety of the operation of the lighting control circuit, one or more of the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, and the fifth resistor R5 can be selectively added to the lighting control circuit.

[0058] For example, a first resistor R1 is provided between the input ends of the first light source L1 and the second light source L2 and the positive electrode P1 of the power supply P.

[0059] Moreover, a second resistor R2 is provided between the gate G of the first MOS transistor Q1 and the positive pole P1 of the power supply P, and a first input terminal K1 of the toggle switch K is located between the second resistor R2 and the gate G of the first MOS transistor Q1.

[0060] Moreover, a third resistor R3 is provided between the gate G of the second MOS transistor Q2 and the positive pole P1 of the power supply P, and a second input terminal K2 of the toggle switch K is located between the third resistor R3 and the gate G of the second MOS transistor Q2.

[0061] Moreover, a fourth resistor R4 is provided between the source S of the first MOS transistor Q1 and the negative pole P2 of the power supply P, and / or a fifth resistor R5 is provided between the source S of the second MOS transistor Q2 and the negative pole P2 of the power supply P.

[0062] Here, it should be noted that the resistance value of any one of the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, and the fifth resistor R5 can be configured according to the specifications of the power supply P in the lighting control circuit, the specifications of the first light source L1 and the second light source L2, the models of the first MOS transistor Q1 and the second MOS transistor Q2, the model of the toggle switch K, and the resistance values of other resistors. The embodiments of the present invention do not make excessive limitations in this regard.

[0063] In addition, an embodiment of the present invention further provides a lamp, which includes the lighting control circuit described in any one of the above embodiments. For the lighting control circuit in the lamp, please refer to the description of the above embodiments and will not be elaborated here; the other structures of the lamp can be common structures in the field of lighting technology and can refer to the existing technical content in this field here.

[0064] It should also be noted that the lamp provided by the embodiment of the present invention includes, but is not limited to, any one of floodlights, high-bay lights, wall washing lights, ceiling lights, etc.

[0065] It should be understood that the terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms of "a", "the", and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0066] It should be understood that the term "and / or" used herein is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, the first component and / or the second component can represent three cases: the first component exists alone, the first component and the second component exist simultaneously, and the second component exists alone. Additionally, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0067] It should be understood that although terms such as first, second, and third may be used to describe certain components in the embodiments of the present invention, these components should not be limited solely to these terms. These terms are only used to distinguish the components from each other. For example, without departing from the scope of the embodiments of the present invention, the first so-and-so component may also be referred to as the second so-and-so component, and similarly, the second so-and-so component may also be referred to as the first so-and-so component.

[0068] Depending on the context, words such as "if" and "when" as used herein may be interpreted as "when" or "while" or "in response to determining" or "in response to monitoring". Similarly, depending on the context, the phrase "if determined" or "if monitoring (stated condition or event)" may be interpreted as "when determined" or "in response to determining" or "when monitoring (stated condition or event)" or "in response to monitoring (stated condition or event)".

[0069] In an embodiment of the present invention, "substantially equal to", "substantially perpendicular to", "substantially symmetric", etc. mean that the macroscopic dimensional or relative positional relationship between the two features referred to is very close to the relationship mentioned. However, those skilled in the art are aware that due to the existence of objective factors such as errors and tolerances, it is difficult to exactly constrain the positional relationship of an object at a small scale or even a microscopic angle. Therefore, even if there is a slight error in the dimensional and positional relationship between the two, it will not have a great impact on the realization of the technical effects of the present invention.

[0070] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a commodity or system including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0071] In the above-described embodiments, although the above methods are illustrated and described as a series of acts for simplicity of explanation, those of ordinary skill in the art should understand and appreciate that these methods are not limited by the order of acts, because according to one or more embodiments, some acts may occur in different orders and / or concurrently with other acts not illustrated and described herein but understood by those skilled in the art.

[0072] Those skilled in the art will appreciate that information, signals, and data can be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, symbols, and chips referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0073] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, units, circuits, and algorithmic steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, the various illustrative components, blocks, modules, units, circuits, and steps are described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and the design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

[0074] It should also be noted that those of ordinary skill in the art can understand that, in order to enable readers to better understand the present invention, many technical details are presented in the embodiments of the present invention. However, even without these technical details and various changes and modifications based on the above-described embodiments, the technical solutions claimed in the various claims of the present invention can be basically implemented. Therefore, in practical applications, various changes can be made in form and detail to the above-described embodiments without departing from the spirit and scope of the present invention.

[0075] In addition, those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0076] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A lighting control circuit, characterized in that, Comprising: a power supply, a toggle switch, a first light source, a second light source, a first MOS transistor, and a second MOS transistor; The input terminal and the output terminal of the first light source are respectively connected to the positive electrode of the power supply and the drain of the first MOS transistor; The input terminal and the output terminal of the second light source are respectively connected to the positive electrode of the power supply and the drain of the second MOS transistor; The source electrodes of the first MOS transistor and the second MOS transistor are both connected to the negative electrode of the power supply; The toggle switch includes a first input terminal, a second input terminal, and an output terminal. The output terminal of the toggle switch is connected to the negative electrode of the power supply. A second resistor is provided between the gate of the first MOS transistor and the positive electrode of the power supply, and the first input terminal of the toggle switch is located between the second resistor and the gate of the first MOS transistor; A third resistor is provided between the gate of the second MOS transistor and the positive electrode of the power supply, and the second input terminal of the toggle switch is located between the third resistor and the gate of the second MOS transistor; The first input terminal of the toggle switch is respectively connected to the gate of the first MOS transistor and the positive electrode of the power supply; The second input terminal of the toggle switch is respectively connected to the gate of the second MOS transistor and the positive electrode of the power supply; Wherein, the output terminal of the toggle switch can be connected to the first input terminal of the toggle switch, or the output terminal of the toggle switch can be connected to the second input terminal of the toggle switch, or the output terminal of the toggle switch is not connected to any one of the first input terminal and the second input terminal of the toggle switch.

2. The lighting control circuit according to claim 1, characterized in that, When the output terminal of the toggle switch is connected to the first input terminal of the toggle switch, the first MOS transistor is turned off, the second MOS transistor is turned on, and the second light source is lit.

3. The lighting control circuit according to claim 1, wherein When the output terminal of the toggle switch is connected to the second input terminal of the toggle switch, the second MOS transistor is turned off, the first MOS transistor is turned on, and the first light source is lit.

4. The lighting control circuit according to claim 1, wherein When the output terminal of the toggle switch is not connected to any one of the first input terminal and the second input terminal of the toggle switch, both the second MOS transistor and the first MOS transistor are turned on, and the first light source and the second light source are lit simultaneously.

5. The lighting control circuit according to claim 1, characterized in that The first light source and the second light source are LED light sources with different color temperatures.

6. The lighting control circuit according to any one of claims 1-5, characterized in that, A first resistor is provided between the input terminals of the first light source and the second light source and the positive electrode of the power supply.

7. The lighting control circuit according to any one of claims 1-5, characterized in that A fourth resistor is provided between the source electrode of the first MOS transistor and the negative electrode of the power supply, and / or a fifth resistor is provided between the source electrode of the second MOS transistor and the negative electrode of the power supply.

8. A lighting fixture, characterized in that, Comprising the lighting control circuit according to any one of claims 1 to 7.

Images