Floor lamp circuit, circuit board thereof and floor lamp

Abstract

The embodiment of the utility model provides a floor lamp circuit, a circuit board thereof and a floor lamp, and the circuit comprises a control circuit which is used for outputting a light source PWM signal of which the peak value is a first voltage; the first PWM circuit comprises a first isolation module, a switch module and a first connection module; wherein the first connecting module is connected with the first lamp source; the first isolation module is connected with the control circuit and is used for outputting an action signal according to the light source PWM signal; the switch module is connected with the first connection module, is connected with the control circuit at the joint with the first connection module, and is used for filtering and outputting a first driving signal with the peak value being second voltage according to the action signal and the power supply voltage; correspondingly, the control circuit feeds back and outputs a light source PWM signal according to the first driving signal, and the first connecting module drives the first light source according to the first driving signal. The first driving signal is output through filtering, so that the influence of ripple waves on feedback adjustment and driving is reduced, and the lighting quality of the floor lamp is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lamps, and in particular to a circuit of a floor lamp and a circuit board thereof, and a floor lamp. Background Art

[0002] At present, the light source in the floor lamp is generally driven by PWM signal. In order to generate a driving PWM signal with a certain power, the power supply voltage and the switching device need to cooperate. The frequent switching of the switching device may generate ripples in the circuit. When ripples are generated, the driving PWM signal will also carry ripples, which will interfere with the feedback regulation and driving inside the floor lamp, and may cause the light source to produce phenomena such as stroboscopic, affecting the lighting quality of the floor lamp. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present application proposes a circuit of a floor lamp and a circuit board thereof, and a floor lamp, aiming to improve the lighting quality of the floor lamp.

[0004] To achieve the above-mentioned object, a first aspect of the present application provides a circuit of a floor lamp, wherein the floor lamp comprises a first light source, including:

[0005] A control circuit, used for outputting a light source PWM signal with a peak value of a first voltage;

[0006] A first PWM circuit includes a first isolation module, a switch module and a first connection module;

[0007] in,

[0008] The first connection module is connected to the first light source;

[0009] The first isolation module is connected to the control circuit, and the first isolation module is used to output an action signal according to the light source PWM signal;

[0010] The switch module is connected to the first connection module, and is connected to the control circuit at the connection with the first connection module. The switch module is used to filter and output a first drive signal with a peak value of a second voltage according to the action signal and the power supply voltage, so as to enable the control circuit to output the light source PWM signal according to the first drive signal feedback and enable the first connection module to drive the first light source according to the first drive signal.

[0011] In some possible embodiments of the present application, the floor lamp includes a knob;

[0012] The circuit further comprises:

[0013] The knob circuit is connected to the control circuit, and is used for outputting an adjustment signal to the control circuit when the knob is rotated, so that the control circuit adjusts the light source PWM signal according to the adjustment signal.

[0014] In some possible embodiments of the present application, the knob circuit includes:

[0015] A knob filter module connected to the control circuit;

[0016] A knob energy storage module, connected in parallel with the control circuit, and the knob energy storage module is used to store energy according to the power supply voltage;

[0017] The knob interaction part includes two first induction coils, the two first induction coils are mutually coupled, one of the two first induction coils connects the first end of the knob filter module and the knob energy storage module, and the other first induction coil is connected to the second end of the knob filter module, so that when the knob is rotated, the connected first induction coils output an adjustment signal to the control circuit according to the energy storage voltage, and the other first induction coil is mutually coupled to output another adjustment signal.

[0018] In some possible embodiments of the present application, the switch module includes:

[0019] A switch device, wherein a control electrode of the switch device is connected to the first isolation module to receive the action signal;

[0020] a diode device, wherein an anode of the diode device is connected to a positive electrode of the switch device, and a cathode of the diode device is used to receive the power supply voltage;

[0021] The first filtering unit is connected in parallel to the positive electrode and the negative electrode of the switching device.

[0022] In some possible embodiments of the present application, the first connection module includes:

[0023] A light source energy storage unit, used for storing energy according to the power supply voltage, wherein the positive electrode of the light source energy storage unit is used for receiving the power supply voltage;

[0024] A second filtering unit, connected between the negative electrode of the lamp source energy storage unit and the switch module unit;

[0025] The surge suppression unit is connected to the first light source and is connected in parallel to the positive electrode and the negative electrode of the light source energy storage unit.

[0026] In some possible embodiments of the present application, the surge suppression unit includes:

[0027] A surge suppression resistor and a surge suppression capacitor, wherein the surge suppression resistor and the surge suppression capacitor are connected in parallel to form a surge filter subunit;

[0028] The surge suppression subunit includes two second induction coils, one of which is connected between the positive pole of the lamp source energy storage unit and the positive pole of the surge filter subunit, and the other is connected between the negative pole of the lamp source energy storage unit and the negative pole of the surge filter subunit, wherein the two second induction coils are mutually coupled.

[0029] In some possible embodiments of the present application, the control circuit is further used to output two secondary light source PWM signals, and the floor lamp further includes a second light source;

[0030] The circuit further includes a second PWM circuit, wherein the second PWM circuit includes:

[0031] A second isolation module, connected to the control circuit, and configured to output a second driving signal and a third driving signal according to the two secondary light source PWM signals;

[0032] The second connecting module is connected to the second isolating module and is connected to the second light source, so that the second light source is driven by the second driving signal and the third driving signal.

[0033] In some possible embodiments of the present application, the circuit further includes:

[0034] A voltage stabilizing circuit is connected to the control circuit, and the voltage stabilizing circuit is used to output the first voltage to the control circuit according to the power supply voltage.

[0035] To achieve the above-mentioned purpose, a second aspect of the present application provides a circuit board of a floor lamp, wherein the circuit board includes the circuit as described in the above-mentioned first aspect.

[0036] To achieve the above-mentioned objective, a third aspect of the present application provides a floor lamp, which comprises the circuit board as described in the above-mentioned second aspect.

[0037] An embodiment of the present application provides a circuit of a floor lamp and its circuit board, and a floor lamp, wherein the circuit includes: a control circuit, which is used to output a light source PWM signal with a peak value of a first voltage; a first PWM circuit, which includes a first isolation module, a switch module and a first connection module; wherein the first connection module is connected to the first light source; the first isolation module is connected to the control circuit, and the first isolation module is used to output an action signal according to the light source PWM signal; the switch module is connected to the first connection module, and is connected to the control circuit at the connection with the first connection module, and the switch module is used to output a first drive signal with a peak value of a second voltage according to the action signal and the power supply voltage filtering, so as to enable the control circuit to output the light source PWM signal according to the first drive signal feedback and enable the first connection module to drive the first light source according to the first drive signal. By filtering the output of the first drive signal with a peak value of the second voltage according to the action signal and the power supply voltage, the influence of the ripple generated by the characteristics of the switching device on the first drive signal fed back to the control circuit can be reduced, thereby improving the feedback adjustment accuracy of the control circuit, and because the ripple in the first drive signal is filtered out to a certain extent, the influence of the ripple on the first light source driven by the first drive signal can be reduced, thereby making the brightness of the first light source more accurate, and improving the lighting quality of the floor lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of a circuit of a floor lamp provided by an embodiment of the present application;

[0039] Figure 2 yes Figure 1 A circuit diagram of a specific embodiment of the control circuit;

[0040] Figure 3 yes Figure 1 A circuit diagram of a specific embodiment of the first PWM circuit;

[0041] Figure 4 is a schematic diagram of a floor lamp provided in an embodiment of the present application;

[0042] Figure 5 is a schematic diagram of a circuit of a floor lamp provided in another embodiment of the present application;

[0043] Figure 6 yes Figure 5 A circuit diagram of a specific embodiment of the knob circuit;

[0044] Figure 7 This is a schematic diagram of a circuit of a floor lamp provided by another embodiment of the present application.

[0045] Figure 8 yes Figure 7A circuit diagram of a specific embodiment of the second PWM circuit;

[0046] Fig. 9 is a schematic diagram of a circuit of a floor lamp provided in another embodiment of the present application;

[0047] Fig.10 yes Fig. 9 A circuit diagram of a specific embodiment of a medium voltage stabilizing circuit.

[0048] Reference numerals:

[0049] Circuit 1, control circuit 11, first PWM circuit 12, first isolation module 121, switch module 122, switch device 1221, diode device 1222, first filtering unit 1223, first connecting module 123, lamp source energy storage unit 1231, second filtering unit 1232, surge suppression unit 1233, surge suppression resistor 12331, surge suppression capacitor 12332, surge suppression subunit 12333, surge filtering subunit 12334, second induction coil 12335, knob circuit 13, knob filtering module 131, knob energy storage module 132, knob interaction unit 133, first induction coil 1331, second PWM circuit 14, second isolation module 141, second connecting module 142, voltage stabilizing circuit 15, floor lamp 2, first lamp source 21, second lamp source 22, knob 23. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0051] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0052] At present, the light source in the floor lamp is generally driven by PWM signal. In order to generate a driving PWM signal with a certain power, the power supply voltage and the switching device need to cooperate. The frequent switching of the switching device may generate ripples in the circuit. When ripples are generated, the driving PWM signal will also carry ripples, which will interfere with the feedback regulation and driving inside the floor lamp, and may cause the light source to produce phenomena such as stroboscopic, affecting the lighting quality of the floor lamp.

[0053] In order to improve the lighting quality of a floor lamp, an embodiment of the present application provides a circuit for a floor lamp, a circuit board for a floor lamp and a floor lamp, the circuit comprising: a control circuit for outputting a light source PWM signal with a peak value of a first voltage; a first PWM circuit, comprising a first isolation module, a switch module and a first connection module; wherein the first connection module is connected to a first light source; the first isolation module is connected to the control circuit, and the first isolation module is used to output an action signal according to the light source PWM signal; the switch module is connected to the first connection module, and is connected to the control circuit at the connection with the first connection module, and the switch module is used to output a first drive signal with a peak value of a second voltage according to the action signal and the power supply voltage filtering, so as to enable the control circuit to output the light source PWM signal according to the first drive signal feedback and enable the first connection module to drive the first light source according to the first drive signal. By filtering the output of the first drive signal with a peak value of the second voltage according to the action signal and the power supply voltage, the influence of the ripple generated by the characteristics of the switching device on the first drive signal fed back to the control circuit can be reduced, thereby improving the feedback adjustment accuracy of the control circuit, and because the ripple in the first drive signal is filtered to a certain extent, the influence of the ripple on the first light source driven by the first drive signal can be reduced, thereby making the brightness of the first light source more precise, and the lighting quality of the floor lamp can be improved.

[0054] Reference Figure 1 As shown, Figure 1 Schematic diagram of a circuit of a floor lamp provided by an embodiment of the present application. Figure 1 As shown, the circuit 1 of the floor lamp shown may include a control circuit 11 and a first PWM circuit 12 .

[0055] Reference Figure 2 As shown, Figure 2 yes Figure 1 In the present application, the control circuit 11 can be used to output a light source PWM signal with a peak value of a first voltage. The control circuit 11 may include a micro control unit (MCU), or may include an MCU and its peripheral circuits (such as Figure 2 As shown), which is not specifically limited here. In addition, the MCU can be a single-chip microcomputer of the STM32F103 series, or a single-chip microcomputer of the ESP8266 series, etc., which is not specifically limited here. In addition, the first voltage can be an MCU operating voltage, or a voltage lower than the MCU operating voltage, etc., which is not specifically limited here. In addition, when the floor lamp includes multiple first light sources, the control circuit 11 can output multiple light source PWM signals.

[0056] Reference Figure 3 As shown, Figure 3 yes Figure 1The first PWM circuit 12 may include a first isolation module 121, a switch module 122, and a first connection module 123. The first connection module 123 may be connected to the first light source of the floor lamp; the first isolation module 121 is connected to the control circuit 11, and the first isolation module 121 may be used to output an action signal according to the light source PWM signal; the switch module 122 is connected to the first connection module 123, and at the connection with the first connection module 123 (such as Figure 3 The switch module 122 can be used to filter and output a first drive signal with a peak value of the second voltage according to the action signal and the power supply voltage, so that the control circuit 11 can output a light source PWM signal according to the first drive signal feedback and the first connection module 123 can drive the first light source according to the first drive signal. The second voltage is higher than the first voltage, and the second voltage can be the power supply voltage, or a voltage higher than the first voltage and lower than the power supply voltage, which is not specifically limited here. In addition, the action signal is a PWM signal, and its peak voltage is higher than the first voltage and lower than or equal to the second voltage.

[0057] In addition, refer to Figure 4 As shown, Figure 4 is a schematic diagram of a floor lamp provided in an embodiment of the present application. The first light source is the main light source of the floor lamp. The number of the first PWM circuits 12 is determined according to the number of the first light sources of the floor lamp. For example, referring to Figure 4 As shown, Figure 4 The floor lamp 2 shown includes two first light sources 21 and a second light source 22. The two first light sources 21 emit white light, and include a first light source 21 arranged relatively above and a first light source 21 arranged relatively below respectively. The first light source 21 is a main light source generally used by users, and the second light source 22 is a golden light source, which may include a red light source and a yellow light source. The red light source and the yellow light source are functional light sources. When both are turned on at the same time, they form golden light, thereby reducing eye fatigue.

[0058] Specifically, a general floor lamp needs to be driven with a higher voltage. Relatively speaking, the working voltage of the control circuit 11 cannot meet the driving voltage of the floor lamp. In order to enable the control circuit 11 to control the floor lamp 2, the light source PWM signal output by the control circuit 11 needs to be converted into a higher voltage PWM signal (i.e., the first driving signal), and a corresponding switch module 122 capable of withstanding high voltage needs to be matched, but such a switch module 122 requires a higher voltage switch signal. Therefore, firstly, the first isolation module 121 is required to increase the voltage peak of the light source PWM signal output by the control circuit 11 and output an action signal, so that the switch module 122 can perform a switch action according to the action signal.

[0059] If the voltage currently output by the first isolation module 121 is the peak voltage of the action signal, the switch module 122 will be turned on and grounded, and since the first connection module 123 receives the power supply voltage, the first connection module 123 and the switch module 122 will form a path for the first light source 21, and the floor lamp 2 will emit light. If the voltage currently output by the first isolation module 121 corresponds to a low-level signal, the switch module 122 will be turned off, the path for the first light source 21 formed by the first connection module 123 and the switch module 122 will be disconnected, and the floor lamp 2 will be turned off.

[0060] The action signal is a PWM signal, so the power supply voltage will generate a PWM signal with a peak voltage of the second voltage in the path of the first light source 21 formed by the first connection module 123 and the switch module 122, so that the first light source 21 can emit light of a specific brightness. On this basis, since the connection between the switch module 122 and the first connection module 123 is connected to the control circuit 11, the control circuit 11 can obtain the first drive signal, so that the control circuit 11 can adjust the current output PWM signal according to the duty cycle feedback of the first drive signal, so that the duty cycle of the first drive signal is the same as the duty cycle of the light source PWM signal, thereby improving the control accuracy.

[0061] However, due to the switching characteristics of electronic devices, when the switch module 122 is turned on and off according to the action signal, the switch module 122 generates certain ripples at the moment of turning on and off due to the sudden change in voltage, resulting in the first drive signal fed back to the control circuit 11 having noise, affecting the feedback adjustment accuracy of the control circuit 11, and also affecting the luminous effect of the first light source 21. Therefore, the switch module 122 filters and outputs the first drive signal, and the ripples in the first drive signal are filtered out, thereby reducing the impact of the ripples on the floor lamp.

[0062] In one embodiment, the first isolation module 121 may be an optical coupling isolation module, which may receive a power supply voltage and an action signal, convert the action signal into a corresponding optical signal, and output an action signal higher than the first voltage according to the optical signal and the power supply voltage. The first isolation module 121 may be 6N138, 6N139, etc., which is not specifically limited here.

[0063] In one embodiment, the first isolation module 121 may include a PWM driver chip, the PWM chip is connected to the control circuit 11, and the first isolation module 121 amplifies the light source PWM signal through the PWM driver chip to obtain an action signal higher than the first voltage. The PWM driver chip may be IR2110, SG3525, etc., which is not specifically limited here.

[0064] Reference Figure 5As shown, Figure 5 A schematic diagram of the circuit of a floor lamp provided for another embodiment of the present application. In one embodiment, the floor lamp 2 may further include a knob 23, and the circuit 1 may further include a knob circuit 13, the knob circuit 13 being connected to the control circuit 11, and the knob circuit 13 may be used to output an adjustment signal to the control circuit 11 when the knob 23 is rotated, so that the control circuit 11 adjusts the light source PWM signal according to the adjustment signal. Specifically, when the knob 23 is rotated, the knob 23 will move, so that the knob circuit 13 can output an adjustment signal according to the movement of the knob 23, and when the control circuit 11 receives the adjustment signal, it determines to increase the specific brightness of the first light source 21 or reduce the specific brightness of the first light source 21 according to the adjustment signal, and then adjusts the duty cycle of the light source PWM signal, so that the floor lamp can be adjusted in brightness, improving the user's convenience.

[0065] In one embodiment, the knob circuit 13 may include a sliding rheostat and its peripheral circuits. The sliding rheostat cooperates with the knob 23. When the knob 23 is rotated, the resistance of the sliding rheostat will change, thereby causing the voltage or current of the adjustment signal output by the knob circuit 13 to change, and then outputting the adjustment signal to adjust the light source PWM signal.

[0066] Reference Figure 6 As shown, Figure 6 Shows Figure 5 A circuit of a specific embodiment of the knob circuit in FIG. In one embodiment, the knob circuit 13 may include a knob filter module 131, a knob energy storage module 132, and a knob interaction unit 133. The knob filter module 131 is connected to the control circuit 11, the knob energy storage module 132 is connected in parallel to the control circuit 11, the knob energy storage module 132 can be used to store energy according to the power supply voltage, and the knob interaction unit 133 may include two first induction coils 1331, the two first induction coils 1331 are mutually coupled, one of the two first induction coils 1331 connects the first end of the knob filter module 131 and the knob energy storage module 132, and the other first induction coil 1331 is connected to the second end of the knob filter module 131, so that when the knob 23 is rotated, the connected first induction coil 1331 outputs an adjustment signal to the control circuit 11 according to the stored energy voltage, and the other first induction coil 1331 is mutually coupled to output another adjustment signal. The knob filter module 131 may be a capacitive filter unit or an RC filter unit, etc., which is not specifically limited here. The first end refers to the upper end of the knob filter module 131, and the second end refers to the lower end of the knob filter module 131.

[0067] Specifically, the knob interaction part 133 cooperates with the knob 23. When the knob 23 is rotated, the two first induction coils 1331 in the knob interaction part 133 will generate a change in magnetic flux due to the rotation of the knob 23. Due to Lenz's law, a certain voltage change will be generated in the knob interaction part 133.

[0068] For the first induction coil 1331 connecting the first end of the knob filter module 131 and the knob energy storage module 132, the voltage between the knob filter module 131 and the knob energy storage module 132 can be used as an adjustment signal. When the knob 23 is rotated, the change in magnetic flux causes the voltage between the knob filter module 131 and the knob energy storage module 132 to change, thereby outputting an adjustment signal. When the floor lamp 2 is turned on, the knob energy storage module 132 can store energy according to the power supply voltage. Therefore, the adjustment signal output by the first induction coil 1331 connecting the first end of the knob filter module 131 and the knob energy storage module 132 is relatively stable.

[0069] For another first induction coil 1331, the first induction coil 1331 can sense and output another adjustment signal due to mutual coupling with the previous first induction coil 1331, and since the first induction coil 1331 and the previous first induction coil 1331 are connected through the knob filter module 131, the previously output adjustment signal will be filtered out by the knob filter module 131, so that the adjustment signal output by the first induction coil 1331 is not superimposed with the adjustment signal output by the previous first induction coil 1331. At this time, the control circuit 11 can adjust the light source PWM signal according to the two adjustment signals, so that the adjustment of the light source PWM signal is more accurate.

[0070] In one embodiment, the switch module 122 may include a switch device and a switch filter unit, wherein the positive electrode of the switch device is connected to the first connection module 123, and the switch filter unit is connected in parallel to the positive electrode and the negative electrode of the switch device. The switch device may be an NPN switch device, a PNP switch device, or a controllable diode, etc., which are not specifically limited here. In addition, the switch filter unit may be a capacitor filter unit, or an RC filter unit, etc., which are not specifically limited here.

[0071] In one embodiment, the switch module 122 may also include a switch device 1221, a diode device 1222 and a first filter unit 1223. The control electrode of the switch device 1221 is connected to the first isolation module 121 to receive an action signal, the anode of the diode device 1222 is connected to the positive electrode of the switch device, the cathode of the diode device 1222 can be used to receive the power supply voltage, and the first filter unit 1223 is connected in parallel to the positive and negative electrodes of the switch device 1221. Among them, the switch device 1221 can be an NPN switch device, a PNP switch device, a controllable diode, etc., which is not specifically limited here. In addition, the first filter unit 1223 can be an RC filter unit, a capacitor filter unit, etc., which is not specifically limited here. In addition, the number of diode devices 1222 can be one or more. Figure 7 The two shown in parallel may also be more than two connected in parallel, and the specific limitation is not made here.

[0072] Specifically, when the switch device 1221 is performing a switching action, the first filtering unit 1223 can filter out the ripple generated by the switch device 1221, so that the output first driving signal can be purer. When the power supply has an overvoltage, the diode device 1222 can be broken down by the overvoltage, so that the voltage between the first connection module 123 and the switch device 1221 remains unchanged, so that the voltage difference between the first light source 21 can be close to 0, thereby reducing the damage to the first light source 21 caused by the power supply overvoltage.

[0073] In one embodiment, the first connection module 123 includes a fuse unit, which is respectively connected to the first light source 21 and the switch module 122. When the power supply has an overvoltage, the fuse unit is blown to reduce the damage to the first light source 21 caused by the overvoltage.

[0074] In one embodiment, the first connection module 123 may include a light source energy storage unit 1231, a second filter unit 1232, and a surge suppression unit 1233. The light source energy storage unit 1231 may be used to store energy according to the power supply voltage, the positive electrode of the light source energy storage unit 1231 may be used to receive the power supply voltage, the second filter unit 1232 is connected between the negative electrode of the light source energy storage unit 1231 and the switch module 122, and the surge suppression unit 1233 is connected to the first light source 21, and is connected in parallel to the positive and negative electrodes of the light source energy storage unit 1231. Among them, the second filter unit 1232 may be an RLC filter unit, or a capacitor filter unit, etc., which is not specifically limited here.

[0075] Specifically, the lamp source energy storage unit 1231 can store energy to enable the first lamp source 21 to obtain a stable power supply voltage in the high level portion of the first driving signal, and the second filtering unit 1232 can filter the first driving signal again, thereby ensuring that the first lamp source 21 can work normally when the power supply voltage is normal. When a surge voltage appears in the power supply connected to the circuit, the surge voltage generated by the power supply can be suppressed by the surge suppression unit, thereby reducing the damage to the first lamp source 21 caused by the power supply overvoltage.

[0076] In one embodiment, the surge suppression unit 1233 may include a transient suppression diode. When a surge voltage appears in the power supply to which the circuit is connected, the transient suppression diode may clamp the input excessive voltage within a safe range through an extremely fast reaction speed.

[0077] In one embodiment, the surge suppression unit 1233 may include a surge suppression resistor 12331, a surge suppression capacitor 12332 and a surge suppression sub-unit 12333, the surge suppression resistor 12331 and the surge suppression capacitor 12332 are connected in parallel to form a surge filter sub-unit 12334, the surge suppression sub-unit 12333 may include two second induction coils 12335, one of the two second induction coils 12335 is connected between the positive pole of the lamp source energy storage unit 1231 and the positive pole of the surge filter sub-unit 12334, and the other is connected between the negative pole of the lamp source energy storage unit 1231 and the negative pole of the surge filter sub-unit 12334, wherein the two second induction coils 12335 are mutually coupled.

[0078] Specifically, when a surge voltage appears in the power supply and is input into the circuit, the second induction coil 12335 connected between the positive pole of the lamp source energy storage unit 1231 and the positive pole of the surge filter subunit 12334 will first produce a change in magnetic flux due to the surge voltage, and due to mutual coupling, the second induction coil 12335 connected between the negative pole of the lamp source energy storage unit 1231 and the negative pole of the surge filter subunit 12334 will induce a reverse voltage equivalent to the surge voltage, so that the surge voltage can be offset by the reverse voltage of the surge voltage, thereby reducing the impact of the surge voltage on the first lamp source 21.

[0079] Reference Figure 7 and Figure 8 As shown, Figure 7 is a schematic diagram of a circuit of a floor lamp provided by another embodiment of the present application, Figure 8A circuit of a specific embodiment of the second PWM circuit is shown. In one embodiment, the control circuit 11 is also used to output two secondary light source PWM signals, and the circuit 1 may also include a second PWM circuit 14. The second PWM circuit 14 also includes a second isolation module 141 and a second connection module 142. The second isolation module 141 is connected to the control circuit 11. The second isolation module 141 is used to output a second drive signal and a third drive signal according to the two secondary light source PWM signals. The second connection module 142 is connected to the second isolation module 141 and is connected to the second light source 22, so that the second light source 22 is driven by the second drive signal and the third drive signal. Specifically, Figure 2 The second light source 22 includes two light sources (i.e., a red light source and a yellow light source) inside, and each light source needs to be driven by a separate driving signal (i.e., one of the second driving signal and the third driving signal) to form golden light in the human eye.

[0080] Among them, the duty cycle of the two secondary light source PWM signals can be the same as or different from the duty cycle of the light source PWM signal. When the duty cycle of the two secondary light source PWM signals is different from the duty cycle of the light source PWM signal, the duty cycle between the two secondary light source PWM signals can be the same or different, which is not specifically limited here. In addition, the second drive signal drives the red light source. In addition, the second isolation module 141 can be a multi-channel optical coupling isolation chip and its peripheral circuits, or a multi-channel PWM drive chip and its peripheral circuits, which is not specifically limited here. In addition, the second connection module 142 can be a multi-channel filter chip, or a multi-channel insurance chip, etc., which is not specifically limited here.

[0081] Reference Fig. 9 and Fig.10 As shown, Fig. 9 A schematic diagram showing a circuit of a floor lamp provided by another embodiment of the present application is shown. Fig.10 A circuit of a specific embodiment of a voltage stabilizing circuit is shown. In one embodiment, the circuit 1 may further include a voltage stabilizing circuit 15, which is connected to the control circuit, and the voltage stabilizing circuit 15 may be used to output a first voltage to the control circuit 11 according to the power supply voltage. The voltage stabilizing circuit 15 may include a voltage stabilizing chip and its peripheral circuits, and may also include a buck circuit and its control circuit, etc., which are not specifically limited here.

[0082] The embodiments of the present application also disclose a circuit board of a floor lamp, which includes the circuits provided in the above embodiments.

[0083] The embodiment of the present application further discloses a floor lamp, which may include but is not limited to including the circuit board as described above.

[0084] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the situation where A exists alone, A and B exist at the same time, and B exists alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b and c can mean: a exists alone, b exists alone, c exists alone, a and b exist at the same time, a and c exist at the same time, b and c exist at the same time, or a, b and c exist at the same time, wherein a, b, c can be single or multiple.

[0086] In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information is called information to be indicated. In the specific implementation process, there may be many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated may be directly indicated, such as indicating the information to be indicated itself or the index of the information to be indicated. The information to be indicated may also be indirectly indicated by indicating other information, wherein the other information has an association relationship with the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information may also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent.

[0087] In the embodiments of the present application, each term and English abbreviation is provided for the convenience of description and shall not constitute any limitation to the present application. The present application does not exclude the possibility of defining other terms that can achieve the same or similar functions in existing or future protocols.

[0088] In the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0089] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A floor lamp circuit, characterized in that: The floor lamp comprises a first light source, including: A control circuit, used for outputting a light source PWM signal with a peak value of a first voltage; A first PWM circuit includes a first isolation module, a switch module and a first connection module; in, The first connection module is connected to the first light source; The first isolation module is connected to the control circuit, and the first isolation module is used to output an action signal according to the light source PWM signal; The switch module is connected to the first connection module, and is connected to the control circuit at the connection with the first connection module. The switch module is used to filter and output a first drive signal with a peak value of a second voltage according to the action signal and the power supply voltage, so as to enable the control circuit to output the light source PWM signal according to the first drive signal feedback and enable the first connection module to drive the first light source according to the first drive signal.

2. The circuit according to claim 1, characterized in that The floor lamp includes a knob; The circuit further comprises: The knob circuit is connected to the control circuit, and is used for outputting an adjustment signal to the control circuit when the knob is rotated, so that the control circuit adjusts the light source PWM signal according to the adjustment signal.

3. The circuit according to claim 2, characterized in that The knob circuit comprises: A knob filter module connected to the control circuit; A knob energy storage module, connected in parallel with the control circuit, and the knob energy storage module is used to store energy according to the power supply voltage; The knob interaction part includes two first induction coils, the two first induction coils are mutually coupled, one of the two first induction coils connects the first end of the knob filter module and the knob energy storage module, and the other first induction coil is connected to the second end of the knob filter module, so that when the knob is rotated, the connected first induction coils output an adjustment signal to the control circuit according to the energy storage voltage, and the other first induction coil is mutually coupled to output another adjustment signal.

4. The circuit according to claim 1, characterized in that The switch module comprises: A switch device, wherein a control electrode of the switch device is connected to the first isolation module to receive the action signal; a diode device, wherein an anode of the diode device is connected to a positive electrode of the switch device, and a cathode of the diode device is used to receive the power supply voltage; The first filtering unit is connected in parallel to the positive electrode and the negative electrode of the switching device.

5. The circuit according to claim 1, characterized in that The first connection module includes: A light source energy storage unit, used for storing energy according to the power supply voltage, wherein the positive electrode of the light source energy storage unit is used for receiving the power supply voltage; A second filtering unit, connected between the negative electrode of the lamp source energy storage unit and the switch module; The surge suppression unit is connected to the first light source and is connected in parallel to the positive electrode and the negative electrode of the light source energy storage unit.

6. The circuit according to claim 5, characterized in that The surge suppression unit comprises: A surge suppression resistor and a surge suppression capacitor, wherein the surge suppression resistor and the surge suppression capacitor are connected in parallel to form a surge filter subunit; The surge suppression subunit includes two second induction coils, one of which is connected between the positive pole of the lamp source energy storage unit and the positive pole of the surge filter subunit, and the other is connected between the negative pole of the lamp source energy storage unit and the negative pole of the surge filter subunit, wherein the two second induction coils are mutually coupled.

7. The circuit according to claim 1, characterized in that The control circuit is also used to output two secondary light source PWM signals, and the floor lamp also includes a second light source; The circuit further includes a second PWM circuit, wherein the second PWM circuit includes: A second isolation module, connected to the control circuit, and configured to output a second driving signal and a third driving signal according to the two secondary light source PWM signals; The second connecting module is connected to the second isolating module and is connected to the second light source, so that the second light source is driven by the second driving signal and the third driving signal.

8. The circuit according to claim 1, characterized in that The circuit further comprises: A voltage stabilizing circuit is connected to the control circuit, and the voltage stabilizing circuit is used to output the first voltage to the control circuit according to the power supply voltage.

9. A circuit board for a floor lamp, characterized in that: The circuit board comprises the circuit according to any one of claims 1 to 8.

10. A floor lamp, characterized in that: The floor lamp comprises the circuit board as claimed in claim 9.

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