Illuminating system and lamp

Abstract

The utility model relates to the technical field of lighting circuits, in particular to a lighting system and a lamp. The lighting system comprises a lighting circuit and a control circuit; the lighting circuit comprises a color matching chip, a main control chip, a first light-emitting element and a first switch tube which are connected in series, and a second light-emitting element and a second switch tube which are connected in series; the color modulation chip comprises a first output end and a second output end, the first output end is electrically connected with the control end of the first switch tube, and the second output end is electrically connected with the control end of the second switch tube; the main control chip is electrically connected with the color matching chip; the output end of the control circuit is connected in series between the control end of the first switching tube and the first output end; when the illumination system cuts off the strong current, the circuit between the output end of the control circuit and the grounding end is conducted; wherein the first level is a low level, and the second level is a high level. According to the technical scheme, the situation that the first light-emitting element is powered off and flashes when the strong current of the lighting system is cut off in the related technology is avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lighting circuits, and in particular to a lighting system and a lamp. Background Art

[0002] In related technologies, such as Figure 1 As shown, the mixed-color LED lighting system includes a main control chip, a color adjustment chip, and two light-emitting elements (a first light-emitting element and a second light-emitting element) of different colors or color temperatures. Each light-emitting element is controlled by an independent switch tube. During operation, the main control chip outputs a PWM signal to the color adjustment chip, and then the two output ends of the color adjustment chip respectively output different level signals to the corresponding switch tubes to control the first light-emitting element or the second light-emitting element to emit light, thereby achieving switching between different colors or color temperatures. However, when the power is cut off by a high-voltage switch, since the power-off time of the main control chip is relatively fast, the PWM signal output by the main control chip after power failure is low, which may cause the first light-emitting element to flicker, giving the user a bad user experience. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a lighting system and a lamp, which avoids the situation in the related art where the first light-emitting element fails to supply power and flashes when the lighting system is disconnected from the high power, thereby improving the user experience.

[0004] In a first aspect, the present disclosure provides a lighting system, comprising:

[0005] Lighting circuits and control circuits;

[0006] The lighting circuit includes a color adjustment chip, a main control chip, a first light-emitting element and a first switch tube connected in series, and a second light-emitting element and a second switch tube connected in series; the color adjustment chip includes a first output end and a second output end, the first output end is electrically connected to the control end of the first switch tube, and the second output end is electrically connected to the control end of the second switch tube;

[0007] The main control chip is electrically connected to the color adjustment chip; the main control chip outputs a first level to the color adjustment chip, the first output terminal outputs a second level and the second output terminal outputs the first level, the first switch tube is in a closed state and the second switch tube is in an open state, and the first light-emitting element emits light; the main control chip outputs a second level to the color adjustment chip, the first output terminal outputs the first level and the second output terminal outputs the second level, the first switch tube is in an open state and the second switch tube is in a closed state, and the second light-emitting element emits light;

[0008] The output end of the control circuit is connected in series between the control end and the first output end of the first switching tube; the lighting system disconnects the strong power, and the circuit between the output end of the control circuit and the ground end is connected, so that the control end of the first switching tube is connected to the first level; wherein, the first level is a low level and the second level is a high level.

[0009] In some embodiments, the control circuit comprises:

[0010] An optocoupler, a first control module, a second control module, a first resistor, a second resistor, a third resistor, and a fourth resistor;

[0011] The first end of the first resistor is connected in series between the first power supply end and the fourth resistor, and the second end of the first resistor is electrically connected to the first end of the optocoupler; the first end of the second resistor is electrically connected to the second end of the optocoupler, the second end of the second resistor is electrically connected to the first end of the third resistor, and the second end of the third resistor is grounded;

[0012] The control end of the first control module is connected in series between the second resistor and the third resistor, the first end of the first control module is grounded, and the second end of the first control module is electrically connected to the fourth resistor;

[0013] The control end of the second control module is connected in series between the fourth resistor and the second end of the first control module, the first end of the second control module is grounded, and the second end of the second control module is connected in series between the control end of the first switch tube and the first output end as the output end of the control circuit;

[0014] Among them, when the lighting system is connected to high power, the optocoupler is in a conductive state, the first end and the second end of the first control module are conductive, and the first end and the second end of the second control module are not conductive; when the lighting system is disconnected from high power, the optocoupler is in a disconnected state, the first end and the second end of the first control module are not conductive, and the first end and the second end of the second control module are conductive.

[0015] In some embodiments, the first control module includes a fifth resistor and a third switch tube;

[0016] The first end of the fifth resistor is connected in series between the second resistor and the third resistor, and the second end of the fifth resistor is electrically connected to the control end of the third switch tube; the first end of the third switch tube is grounded, and the second end of the third switch tube is electrically connected to the fourth resistor.

[0017] In some embodiments, the second control module includes a sixth resistor, a seventh resistor, an eighth resistor and a fourth switch tube;

[0018] A first end of the sixth resistor is connected in series between the second end of the third switch and the fourth resistor, and a second end of the sixth resistor is electrically connected to the control end of the fourth switch. A first end of the seventh resistor is connected in series between the sixth resistor and the fourth switch, and a second end of the seventh resistor is grounded.

[0019] A first terminal of the fourth switch tube is grounded, and a second terminal of the fourth switch tube is connected in series between the control terminal of the first switch tube and the first output terminal through the eighth resistor.

[0020] In some embodiments, the control circuit further comprises:

[0021] A voltage stabilizing element and a first filtering element connected in parallel;

[0022] The first end of the voltage stabilizing element is connected in series between the ninth resistor and the third end of the optical coupler, and the second end of the voltage stabilizing element is grounded;

[0023] A first end of the first filter element is connected in series between the ninth resistor and the third end of the optocoupler, and a second end of the first filter element is grounded.

[0024] In some embodiments, the control circuit further comprises:

[0025] A voltage stabilizing element and a first filtering element connected in parallel;

[0026] The first end of the voltage stabilizing element is connected in series between the ninth resistor and the third end of the optical coupler, and the second end of the voltage stabilizing element is grounded;

[0027] A first end of the first filter element is connected in series between the ninth resistor and the third end of the optocoupler, and a second end of the first filter element is grounded.

[0028] In some embodiments, the control circuit further comprises:

[0029] A second filter element, wherein a first end of the second filter element is connected in series between the first resistor and the first end of the optocoupler, and a second end of the second filter element is electrically connected to the second end of the third resistor.

[0030] In some embodiments, the control circuit further comprises:

[0031] A third filter element, wherein a first end of the third filter element is connected in series between the second resistor and the third resistor, and a second end of the third filter element is electrically connected to a second end of the third resistor.

[0032] In a second aspect, the present disclosure further provides a lamp, comprising the lighting system as described in the first aspect.

[0033] The lighting system provided by the disclosed embodiments utilizes a control circuit to connect the first output terminal of the color-adjusting chip to the ground terminal of the control circuit when the lighting system is disconnected from the high-voltage power supply. The control circuit can then directly pull down the level signal output by the first output terminal of the color-adjusting chip. Thus, when the high-voltage power supply is disconnected, when the output of the main control chip is low, the first output terminal of the color-adjusting chip cannot output a high level, thereby ensuring that the first light-emitting element controlled by the first output terminal will not be illuminated. This avoids the problem of the first light-emitting element flashing when the lighting system is disconnected from the high-voltage power supply in the related art, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0035] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 A schematic structural diagram of a color mixing lighting system provided in the related art;

[0037] Figure 2 A structural diagram of a lighting system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0040] Figure 1 FIG. 1 is a structural diagram of a color mixing lighting system provided in the related art. Figure 1As shown, the color mixing lighting system includes a main control chip 12, a color adjustment chip 11, a first light-emitting element 01 and a first switching transistor Q1 arranged in series, and a second light-emitting element 02 and a second switching transistor Q2 arranged in series. The output terminal IO1 of the main control chip 12 outputs a PWM signal to the color adjustment chip 11, which controls the first light-emitting element 01 or the second light-emitting element 02 (the first light-emitting element 01 and the second light-emitting element 02 emit different colors), thereby achieving different color or color temperature switching.

[0041] Specifically, if Figure 1 As shown, when the PWM signal is at a high level, the first output terminal OUT1 of the color adjustment chip 11 outputs a low level to the control terminal of the first switch tube Q1, and the second output terminal OUT2 outputs a high level to the control terminal of the second switch tube Q2. At this time, the first switch tube Q1 is in an off state and the second switch tube Q2 is in a closed state, the first light-emitting element O1 is off, and the second light-emitting element O2 is lit; when the PWM signal is at a low level, the first output terminal OUT1 outputs a high level to the control terminal of the first switch tube Q1, and the second output terminal OUT2 outputs a low level to the control terminal of the second switch tube Q2. At this time, the first switch tube Q1 is in a closed state and the second switch tube Q2 is in an off state, the first light-emitting element O1 is lit, and the second light-emitting element O2 is off.

[0042] exist Figure 1 The circuit shown has a significant flaw. When the color-mixing lighting system is disconnected from the main power supply, the main control chip 12's supply voltage is 3.3V and rapidly loses power. After power supply VCC is lost, the PWM signal output by the main control chip 12 is low. At this point, the storage capacitor C0 in the circuit still holds a certain amount of charge, and the color-adjusting chip 11 is still operating. When the main control chip 12 outputs a low level to the color-adjusting chip 11, the first output terminal OUT1 of the color-adjusting chip 11 outputs a high level. This causes the first light-emitting element 01 controlled by the first output terminal OUT1 to flicker, creating a poor user experience.

[0043] In response to the technical problems existing in the above-mentioned related technologies, the embodiments of the present disclosure provide a lighting system. The lighting system provided by the embodiments of the present disclosure, by setting a control circuit, can realize that when the lighting system is disconnected from the strong power, the first output end of the color adjustment chip is connected to the ground end of the control circuit, and the control circuit can directly pull down the level signal output by the first output end of the color adjustment chip. Therefore, when the strong power is disconnected, the output of the main control chip is low, and the first output end of the color adjustment chip cannot output a high level, thereby ensuring that the first light-emitting element controlled by the first output end will not be illuminated, thereby avoiding the situation in the related art where the first light-emitting element flashes due to power failure when the lighting system is disconnected from the strong power, which is conducive to improving the user experience.

[0044] The lighting system and lamp provided by the embodiments of the present disclosure are exemplarily described below with reference to the accompanying drawings.

[0045] Figure 2 This is a structural diagram of a lighting system provided by an embodiment of the present disclosure. Figure 2 As shown, the lighting system includes: a lighting circuit 10 and a control circuit 010. The lighting circuit 10 includes a color adjustment chip 11, a main control chip 12, a first light-emitting element 01 and a first switch Q1 connected in series, and a second light-emitting element 02 and a second switch Q2 connected in series. The color adjustment chip 11 includes a first output terminal OUT1 and a second output terminal OUT2. The first output terminal OUT1 is electrically connected to the control terminal of the first switch Q1, and the second output terminal OUT2 is electrically connected to the control terminal of the second switch Q2. The lighting circuit 10 also includes a dimming chip 011, which is primarily responsible for supplying energy to the first light-emitting element 01 and the second light-emitting element 02 to adjust the lighting brightness of the first light-emitting element 01 and the second light-emitting element 02.

[0046] Among them, the main control chip 12 is electrically connected to the color adjustment chip 11; the main control chip 12 outputs a first level to the color adjustment chip 11, the first output end OUT1 outputs a second level and the second output end OUT2 outputs the first level, the first switch tube Q1 is in a closed state and the second switch tube Q2 is in an open state, and the first light-emitting element O1 emits light; the main control chip 12 outputs a second level to the color adjustment chip 11, the first output end OUT1 outputs the first level and the second output end OUT2 outputs the second level, the first switch tube Q1 is in an open state and the second switch tube Q2 is in a closed state, and the second light-emitting element O2 emits light.

[0047] The output end of the control circuit 010 (i.e., the second end E2 of the second control module 15) is connected in series between the control end of the first switch tube Q1 and the first output end OUT1. When the lighting system is disconnected from the high power supply, the circuit between the output end of the control circuit 010 and the ground end is connected, so that the control end of the first switch tube Q1 is connected to the first electrical level. The first electrical level is a low electrical level, and the second electrical level is a high electrical level.

[0048] The first light emitting element 01 and the second light emitting element 02 may both be light emitting diodes. The first switch tube Q1 and the second switch tube Q2 may both be MOS tubes.

[0049] Specifically, the embodiment of the present application sets Figure 2 The control circuit 010 shown (compared to Figure 1 The circuit shown in Figure 2The control circuit 010 in the embodiment may be a newly added circuit). When the lighting system is disconnected from the high power supply, the first output terminal OUT1 of the color adjustment chip 11 can be connected to the ground terminal of the control circuit 010. The control circuit 010 can directly pull down the level signal output by the first output terminal OUT1 of the color adjustment chip 11. Therefore, when the high power supply is disconnected, if the output of the main control chip 12 is low, the first output terminal OUT1 of the color adjustment chip 11 cannot output a high level, thereby ensuring that the first light-emitting element 01 controlled by the first output terminal OUT1 will not be illuminated. This avoids the problem of the first light-emitting element 01 flashing when the lighting system is disconnected from the high power supply in the related art, which is conducive to improving the user experience.

[0050] In some embodiments, as Figure 2 As shown, the control circuit 010 includes: an optical coupler 13, a first control module 14, a second control module 15, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4.

[0051] The first end of the first resistor R1 is connected in series between the first power supply terminal and the fourth resistor R4, and the second end of the first resistor R1 is electrically connected to the first end A1 of the optocoupler 13; the first end of the second resistor R2 is electrically connected to the second end A2 of the optocoupler 13, and the second end of the second resistor R2 is electrically connected to the first end of the third resistor R3, and the second end of the third resistor R3 is grounded;

[0052] The control terminal B of the first control module 14 is connected in series between the second resistor R2 and the third resistor R3, the first terminal B1 of the first control module 14 is grounded, and the second terminal B2 of the first control module 14 is electrically connected to the fourth resistor R4;

[0053] Among them, the control end E of the second control module 15 is connected in series between the fourth resistor R4 and the second end of the first control module 14, the first end E1 of the second control module 15 is grounded, and the second end E2 of the second control module 15 is connected in series between the control end of the first switch tube Q1 and the first output end OUT1 as the output end of the control circuit 010.

[0054] Specifically, when the lighting system is connected to a strong power source, the optocoupler 13 is in the on state. At this time, the first power supply terminal U1 outputs, for example, a 54V voltage which is divided by the first resistor R1, the second resistor R2, and the third resistor R3, so that the voltage at the control terminal B of the first control module 14 can make the first terminal B1 and the second terminal B2 of the first control module 14 conductive. Since the first terminal B1 and the second terminal B2 of the first control module 14 are conductive, the circuit between the control terminal E of the second control module 15 and the ground terminal is conductive, resulting in a lower voltage at the control terminal E of the second control module 15, thereby making it impossible for the first terminal E1 and the second terminal E2 of the second control module 15 to be conductive. Therefore, when the lighting system is connected to a strong power source, Figure 2The newly added circuit, namely the control circuit 010, has no effect on the original working circuit.

[0055] Specifically, when the lighting system is disconnected from the power supply, the optocoupler 13 instantly becomes non-conductive, meaning it is in the off state. At this point, the transistor within the optocoupler 13 exhibits a relatively high impedance. The voltage divided by the third resistor R3 decreases, and the resistor acts as a pull-down resistor, lowering the voltage at the control terminal B of the first control module 14. This results in the first terminal B1 and the second terminal B2 of the first control module 14 becoming non-conductive. However, the voltage at the control terminal E of the second control module 15 increases, allowing the first terminal E1 and the second terminal E2 of the second control module 15 to become conductive. After the first end E1 and the second end E2 of the second control module 15 are connected, the first output end OUT1 of the color adjustment chip 11 is electrically connected to the second end E2 of the second control module 15, and the first end E1 of the second control module 15 is grounded, thereby directly pulling down the level signal output by the first output end OUT1 of the color adjustment chip 11, so that the first light-emitting element 01 controlled by the first output end OUT1 will not be illuminated, avoiding the situation in the related art where the first light-emitting element 01 flashes due to power failure when the lighting system is disconnected from the strong power, which is beneficial to improving the user experience.

[0056] In some embodiments, as Figure 2 As shown, the first control module 14 may include a fifth resistor R5 and a third switch tube Q3; the first end of the fifth resistor R5 is connected in series between the second resistor R2 and the third resistor R3, and the second end of the fifth resistor R5 is electrically connected to the control end G of the third switch tube Q3; the first end S of the third switch tube Q3 is grounded, and the second end D of the third switch tube Q3 is electrically connected to the fourth resistor R4.

[0057] The control terminal G of the third switch Q3 is used to control the conductive state of the first terminal S and the second terminal D of the third switch Q3. Specifically, when the first terminal S and the second terminal D of the third switch Q3 are conductive, the first terminal B1 and the second terminal B2 of the first control module 14 are conductive; when the first terminal S and the second terminal D of the third switch Q3 are disconnected, the first terminal B1 and the second terminal B2 of the first control module 14 are disconnected. For example, the third switch Q3 can be a MOS transistor.

[0058] In some embodiments, as Figure 2As shown, the second control module 15 may include a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 and a fourth switch tube Q4; a first end of the sixth resistor R6 is connected in series between the second end of the third switch tube Q3 and the fourth resistor R4, and a second end of the sixth resistor R6 is electrically connected to the control end G of the fourth switch tube Q4; a first end of the seventh resistor R7 is connected in series between the sixth resistor R6 and the fourth switch tube Q4, and a second end of the seventh resistor R7 is grounded; a first end D of the fourth switch tube Q4 is grounded, and a second end S of the fourth switch tube Q4 is connected in series between the control end of the first switch tube Q1 and the first output end OUT1 through the eighth resistor R8.

[0059] The control terminal G of the fourth switch transistor Q4 is used to control the conductive state of the first terminal S and the second terminal D of the fourth switch transistor Q4. Specifically, when the first terminal S and the second terminal D of the fourth switch transistor Q4 are conductive, the first terminal E1 and the second terminal E2 of the second control module 15 are conductive; when the first terminal S and the second terminal D of the fourth switch transistor Q4 are disconnected, the first terminal E1 and the second terminal E2 of the second control module 15 are disconnected. By way of example, the fourth switch transistor Q4 can be a MOS transistor.

[0060] Specifically, when the lighting system is connected to a strong power source, the optocoupler 13 is in the on state. At this time, the 54V voltage output by the second power supply terminal, for example, is divided by the first resistor R1, the second resistor R2, and the third resistor R3, so that the voltage at the control terminal B of the first control module 14 is input to the control terminal G of the third switch tube Q3, which can turn on the third switch tube Q3. Correspondingly, the first terminal B1 and the second terminal B2 of the first control module 14 are turned on, and the control terminal E of the second control module 15 is grounded through the third switch tube Q3, resulting in a lower voltage at the control terminal E of the second control module 15, and then a lower voltage at the control terminal G of the fourth switch tube Q4. The fourth switch tube Q4 cannot be turned on, that is, it is in the off state, thereby achieving a disconnection between the first terminal E1 and the second terminal E2 of the second control module 15. Therefore, when the lighting system is connected to a strong power source, Figure 2 The newly added circuit, namely the control circuit 010, has no effect on the original working circuit.

[0061] Specifically, when the lighting system is disconnected from the high voltage, the optocoupler 13 will instantly cease to conduct, meaning it is in the off state. At this point, the diode within the optocoupler 13 presents a high impedance. The voltage divider of the third resistor R3 decreases, and acting as a pull-down resistor, lowers the voltage at the control terminal B of the first control module 14. Consequently, the voltage input to the control terminal G of the third switch Q3 is low, preventing the third switch Q3 from conducting. Accordingly, the first terminal B1 and the second terminal B2 of the first control module 14 are unable to conduct. However, the voltage at the control terminal E of the second control module 15 is pulled higher, increasing the voltage input to the control terminal G of the fourth switch Q4, enabling the fourth switch Q4 to conduct. Accordingly, the first terminal E1 and the second terminal E2 of the second control module 15 are conducting. After the first end E1 and the second end E2 of the second control module 15 are connected, since the first output end OUT1 of the color adjustment chip 11 is electrically connected to the second end E2 of the second control module 15, and the first end E1 of the second control module 15 is grounded, the level signal output by the first output end OUT1 of the color adjustment chip 11 is directly pulled down, so that the first light-emitting element 01 controlled by the first output end OUT1 will not be illuminated.

[0062] In some embodiments, as Figure 2 As shown, the control circuit 010 also includes: a ninth resistor R9 and a tenth resistor R10 connected in series, the first end of the ninth resistor R9 is connected to the second power supply end U2, the second end of the ninth resistor R9 is electrically connected to the third end A3 of the optocoupler 13 and the first end of the tenth resistor R10 respectively, and the second end of the tenth resistor R10 and the fourth end A4 of the optocoupler 13 are grounded.

[0063] Specifically, a ninth resistor R9 and a tenth resistor R10 are provided, and the ninth resistor R9 and the tenth resistor R10 can be used as voltage dividers to provide the required operating voltage for the third terminal A3 and the fourth terminal A4 of the optical coupler 13. For example, Figure 2 As shown, the optical coupler 13 includes a light source on the left and a light receiver on the right. The light source can be a light emitting diode, and the light receiver can be a phototransistor. The specific working principle of the optical coupler 13 is well known to those skilled in the art and will not be elaborated here.

[0064] In some embodiments, as Figure 2 As shown, the control circuit 010 further includes:

[0065] A voltage stabilizing element ZD and a first filtering element C1 are arranged in parallel; a first end of the voltage stabilizing element ZD is connected in series between the ninth resistor R9 and the third end A3 of the optocoupler 13, and a second end of the voltage stabilizing element ZD is grounded; a first end of the first filtering element C1 is connected in series between the ninth resistor R9 and the third end A3 of the optocoupler 13, and a second end of the first filtering element C1 is grounded.

[0066] Specifically, by providing the voltage stabilizing element ZD, a stable voltage can be maintained between the third terminal A3 and the fourth terminal A4 of the optical coupler 13. In addition, by providing the first filtering element C1, filtering can be performed to avoid introducing interference signals.

[0067] In some embodiments, as Figure 2 As shown, the control circuit 010 further includes:

[0068] The second filter element C2 has a first end connected in series between the first resistor R1 and the first end A1 of the optocoupler 13 , and a second end electrically connected to the second end of the third resistor R3 .

[0069] Specifically, the signal in the circuit can be filtered by providing the second filtering element C2.

[0070] In some embodiments, as Figure 2 As shown, the control circuit 010 further includes:

[0071] The third filter element C3 has a first end connected in series between the second resistor R2 and the third resistor R3 , and a second end of the third filter element C3 is electrically connected to the second end of the third resistor R3 .

[0072] Specifically, the signal in the circuit can be filtered by providing the third filtering element C3.

[0073] On the basis of the above embodiments, the present disclosure further provides a lamp, comprising the lighting system as described in the above embodiments, and thus having the same or similar beneficial effects, which will not be described in detail here.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0075] The above are merely specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to these embodiments, but is to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A lighting system, characterized in that: include: Lighting circuits and control circuits; The lighting circuit includes a color adjustment chip, a main control chip, a first light-emitting element and a first switch tube connected in series, and a second light-emitting element and a second switch tube connected in series; the color adjustment chip includes a first output end and a second output end, the first output end is electrically connected to the control end of the first switch tube, and the second output end is electrically connected to the control end of the second switch tube; The main control chip is electrically connected to the color adjustment chip; the main control chip outputs a first level to the color adjustment chip, the first output terminal outputs a second level, and the second output terminal outputs the first level, the first switch tube is in a closed state, and the second switch tube is in an open state; The main control chip outputs a second level to the color adjustment chip, the first output terminal outputs the first level and the second output terminal outputs the second level, the first switch tube is in an open state and the second switch tube is in a closed state; The output end of the control circuit is connected in series between the control end and the first output end of the first switching tube; the lighting system disconnects the strong power, and the circuit between the output end of the control circuit and the ground end is connected, so that the control end of the first switching tube is connected to the first level; wherein, the first level is a low level and the second level is a high level.

2. The lighting system according to claim 1, wherein The control circuit comprises: An optocoupler, a first control module, a second control module, a first resistor, a second resistor, a third resistor, and a fourth resistor; The first end of the first resistor is connected in series between the first power supply end and the fourth resistor, and the second end of the first resistor is electrically connected to the first end of the optocoupler; the first end of the second resistor is electrically connected to the second end of the optocoupler, the second end of the second resistor is electrically connected to the first end of the third resistor, and the second end of the third resistor is grounded; The control end of the first control module is connected in series between the second resistor and the third resistor, the first end of the first control module is grounded, and the second end of the first control module is electrically connected to the fourth resistor; The control end of the second control module is connected in series between the fourth resistor and the second end of the first control module, the first end of the second control module is grounded, and the second end of the second control module serves as the output end of the control circuit; Among them, when the lighting system is connected to high power, the optocoupler is in a conductive state, the first end and the second end of the first control module are conductive, and the first end and the second end of the second control module are not conductive; when the lighting system is disconnected from high power, the optocoupler is in a disconnected state, the first end and the second end of the first control module are not conductive, and the first end and the second end of the second control module are conductive.

3. The lighting system according to claim 2, characterized in that The first control module includes a fifth resistor and a third switch tube; The first end of the fifth resistor is connected in series between the second resistor and the third resistor, and the second end of the fifth resistor is electrically connected to the control end of the third switch tube; the first end of the third switch tube is grounded, and the second end of the third switch tube is electrically connected to the fourth resistor.

4. The lighting system according to claim 3, characterized in that The second control module includes a sixth resistor, a seventh resistor, an eighth resistor and a fourth switch tube; A first end of the sixth resistor is connected in series between the second end of the third switch and the fourth resistor, and a second end of the sixth resistor is electrically connected to the control end of the fourth switch. A first end of the seventh resistor is connected in series between the sixth resistor and the fourth switch, and a second end of the seventh resistor is grounded. A first terminal of the fourth switch tube is grounded, and a second terminal of the fourth switch tube is connected in series between the control terminal of the first switch tube and the first output terminal through the eighth resistor.

5. The lighting system according to claim 2, wherein: The control circuit further includes: A ninth resistor and a tenth resistor connected in series, wherein a first end of the ninth resistor is connected to the second power supply end; The second end of the ninth resistor is electrically connected to the third end of the optocoupler and the first end of the tenth resistor respectively, and the second end of the tenth resistor and the fourth end of the optocoupler are grounded.

6. The lighting system according to claim 5, characterized in that The control circuit further includes: A voltage stabilizing element and a first filtering element connected in parallel; The first end of the voltage stabilizing element is connected in series between the ninth resistor and the third end of the optical coupler, and the second end of the voltage stabilizing element is grounded; A first end of the first filter element is connected in series between the ninth resistor and the third end of the optocoupler, and a second end of the first filter element is grounded.

7. The lighting system according to claim 2, characterized in that The control circuit further includes: A second filter element, wherein a first end of the second filter element is connected in series between the first resistor and the first end of the optocoupler, and a second end of the second filter element is electrically connected to the second end of the third resistor.

8. The lighting system according to claim 2, wherein: The control circuit further includes: A third filter element, wherein a first end of the third filter element is connected in series between the second resistor and the third resistor, and a second end of the third filter element is electrically connected to a second end of the third resistor.

9. A lamp, characterized in that: The lighting system comprises the lighting system according to any one of claims 1 to 8.

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