CN217849722U

CN217849722U - Lamp circuit and lamp

Info

Publication number: CN217849722U
Application number: CN202221359775.4U
Authority: CN
Inventors: 吴晓丹; 黎建群; 易长春
Original assignee: Shenzhen Wisdom Light Co ltd
Current assignee: Shenzhen Wisdom Light Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-11-18
Anticipated expiration: 2032-06-01

Abstract

The utility model relates to a lamps and lanterns illumination technical field, concretely relates to lamps and lanterns circuit and lamps and lanterns. The lamp circuit comprises a power supply circuit, a first driving circuit, a second driving circuit, a color temperature switching circuit connected with the first driving circuit and a power adjusting circuit connected with the second driving circuit, wherein the power supply circuit is respectively connected with the first driving circuit and the second driving circuit, the color temperature switching circuit is used for switching the color temperature of the lamp circuit, and the power adjusting circuit is used for adjusting the output power of the lamp circuit; the power supply circuit provides corresponding working voltages for the first driving circuit and the second driving circuit so that the first driving circuit and the second driving circuit respectively drive the color temperature switching circuit and the power regulating circuit to work. The utility model discloses a function that the colour temperature switches and power regulation can be realized simultaneously to the lamps and lanterns circuit. The utility model discloses a lamps and lanterns have the same beneficial effect with the lamps and lanterns circuit, no longer give unnecessary details here.

Description

Lamp circuit and lamp

[ technical field ] A method for producing a semiconductor device

The utility model relates to a lamps and lanterns illumination technical field, concretely relates to lamps and lanterns circuit and lamps and lanterns.

[ background of the invention ]

The LED lamp has the advantages of high brightness, energy conservation, long service life, good applicability, environmental protection and the like, and is widely applied to illumination in various fields. The demand for light control of LED lamps is therefore increasing. The existing lamp circuit can only realize the color temperature adjusting function, and can only realize the power adjusting function, so that the requirement for increasing the diversity of light control can not be met.

[ Utility model ] content

For the problem that solves the unable user's demand that satisfies of lamps and lanterns circuit among the prior art, the utility model provides a lamps and lanterns circuit and lamps and lanterns.

In order to solve the above technical problem, the present invention provides a lamp circuit for driving at least two lamp bodies with different color temperatures, wherein the lamp circuit includes a power supply circuit, a first driving circuit, a second driving circuit, a color temperature switching circuit connected to the first driving circuit, and a power regulating circuit connected to the second driving circuit, the power supply circuit is respectively connected to the first driving circuit and the second driving circuit, the color temperature switching circuit is used for switching the color temperature of the lamp circuit, and the power regulating circuit is used for regulating the output power of the lamp circuit;

the power supply circuit provides corresponding working voltages for the first driving circuit and the second driving circuit so that the first driving circuit and the second driving circuit respectively drive the color temperature switching circuit and the power regulating circuit to work.

Preferably, the color temperature switching circuit further includes first switch circuits corresponding to the number of the lamp bodies, one end of each of the first switch circuits is connected in series with the corresponding lamp body and then connected in parallel with each other, and a common point at the other end of each of the first switch circuits is connected to the first driving circuit.

Preferably, the first switching circuit is a single pole, single throw switch.

Preferably, the power regulating circuit includes at least two second switch circuits, one end of each of the second switch circuits is connected in series with a resistor, a common point of the other ends of the second switch circuits connected in parallel is connected to the second driving circuit, and the common point of the other ends of the plurality of resistors is grounded.

Preferably, the second switching circuit is a single pole, single throw switch.

Preferably, the lamp circuit further includes an isolation amplifying circuit, a dimmer and an LED lamp connected to the first driving circuit, the second driving circuit is connected to the dimmer, and the second driving circuit is connected to the first driving circuit through the isolation amplifying circuit; the light modulator is used for sending a light modulation signal and feeding the light modulation signal back to the second driving circuit, and the second driving circuit feeds the light modulation signal back to the first driving circuit through the isolation amplifying circuit after receiving the light modulation signal so as to adjust the brightness of the LED lamp.

Preferably, the first driving circuit includes a chip U1, the chip U1 includes at least first to eighth pins, the second driving circuit includes a chip U3, and the chip U3 includes at least first to eighth pins;

the output end of the dimmer is connected with the fifth pin of the chip U3, the sixth pin of the chip U3 is connected with the input end of the isolation amplifying circuit, and the output end of the isolation amplifying circuit is connected with the second pin of the chip U1.

Preferably, the isolation amplifying circuit includes an optocoupler.

Preferably, the lamp circuit further comprises a DC-DC circuit, and the output terminal of the power supply circuit is connected to the DC-DC circuit.

The utility model provides a further technical scheme that above-mentioned technical problem provided provides a lamps and lanterns, lamps and lanterns include as above the lamps and lanterns circuit.

Compared with the prior art, the utility model provides a lamp circuit has following advantage:

1. the embodiment of the utility model provides a lamp circuit when power supply circuit provides corresponding operating voltage for first drive circuit and second drive circuit, and then makes first drive circuit and second drive circuit can normally work. At the moment, the color temperature switching circuit connected with the first driving circuit starts to work so as to realize that the color temperature of the lamp circuit can be switched; and the power regulation power connected with the second driving circuit starts to work so as to realize that the output power of the lamp circuit is adjustable. Therefore, the utility model discloses a lamps and lanterns circuit can realize the function that the colour temperature switches and power regulation simultaneously to can satisfy the different demands of user under the different situation, and then improve user's experience and feel.

2. The embodiment of the utility model provides a lamp circuit, the colour temperature of the lamp body of every first switch circuit connection is different, consequently can be through the different combinations that select a plurality of first switches to switch on or turn-off to make lamp circuit can realize the switching of different colour temperatures.

3. The embodiment of the utility model provides a, because supply circuit's operating voltage is certain, can change the size of electric current through the resistance quantity that changes the access, it is that the electric current that corresponds the passing through that resistance is the more little also that power is big more, on the contrary resistance is the more the electric current that corresponds the passing through that is the power is the little also that power is little more, consequently can be through selecting the different combination that switches on of a plurality of second switch circuits and then adjust the different power of lamp body output.

4. The embodiment of the utility model provides a lamp circuit, when the fifth pin of chip U3 receives external dimming signal input, also be when the fifth pin of chip U3 receives 0-10V variable voltage, the PWM signal that duty ratio changes can be exported to the sixth pin of chip U3, and keep apart through keeping apart amplifier circuit and amplify, also be that this PWM signal exports for the high level behind keeping apart amplifier circuit, and feed back to chip U1's second pin, the high level is received to chip U1's second pin, also be that different PWM signal of control chip U1 output to the LED lamp, and then make the regulation of LED lamp luminance, thereby realize that the light of LED lamp is adjustable

5. The embodiment of the utility model provides a lamp circuit for the corresponding voltage of output of DC-DC circuit and then for the equipment that needs the power supply provides corresponding electric energy.

6. The embodiment of the utility model provides a lamps and lanterns have the same beneficial effect with the lamps and lanterns circuit, no longer give unnecessary details here.

[ description of the drawings ]

Fig. 1 is a first schematic diagram of a circuit structure module of a lamp circuit according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a circuit structure module of a lamp circuit according to the first embodiment of the present invention;

fig. 3 is a schematic diagram of a circuit structure module of a lamp circuit according to the first embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a lamp circuit according to a first embodiment of the present invention;

fig. 5 is a schematic diagram of a circuit structure module of a lamp circuit according to a second embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a part of a lamp circuit according to a second embodiment of the present invention;

fig. 7 is a schematic structural diagram of a lamp according to a third embodiment of the present invention.

The attached drawings indicate the following:

1. a lamp circuit; 2. a lamp circuit; 3. a light fixture;

10. a power supply circuit; 11. a first drive circuit; 12. a second drive circuit; 13. a dimmer; 14. an isolation amplifying circuit; 15. an LED lamp; 16. a color temperature switching circuit; 17. a power conditioning circuit; 18. a DC-DC circuit; 21. a power supply circuit; 22. a DC-DC circuit; 23. a first voltage-reducing circuit; 24. a second voltage-reducing circuit; 25. a first master control circuit; 26. a second master control circuit; 27. a color temperature switching circuit; 28. a power conditioning circuit; 29. a wireless communication module; 31. a main body; 32. a lamp circuit;

161. a first switching circuit; 171. a second switching circuit; 271. a first switching circuit; 281. a second switching circuit.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Please combine fig. 1 and fig. 2, a first embodiment of the present invention provides a lamp circuit 1 for driving at least two lamp bodies with different color temperatures, including a power supply circuit 10, a first driving circuit 11, a second driving circuit 12, a color temperature switching circuit 16 connected to the first driving circuit 11, and a power adjusting circuit 17 connected to the second driving circuit 12, wherein the power supply circuit 10 is respectively connected to the first driving circuit 11 and the second driving circuit 12, the color temperature switching circuit 16 is used for switching the color temperature of the lamp circuit 1, and the power adjusting circuit 17 is used for adjusting the output power of the lamp circuit 1; the power supply circuit 10 provides corresponding operating voltages for the first driving circuit 11 and the second driving circuit 12, so that the first driving circuit 11 and the second driving circuit 12 respectively drive the color temperature switching circuit 16 and the power adjusting circuit 17 to operate.

It can be understood that, when the power supply circuit 10 provides the first driving circuit 11 and the second driving circuit 12 with the corresponding operating voltages, the first driving circuit 11 and the second driving circuit 12 are enabled to operate normally. At this time, the color temperature switching circuit 16 connected to the first driving circuit 11 starts to operate, so as to switch the color temperature of the lamp circuit 1; the power regulation power connected to the second driving circuit 12 starts to operate to realize the output power regulation of the lamp circuit 1. Therefore, the utility model discloses a lamps and lanterns circuit 1 can realize the function that the colour temperature switches and power regulation simultaneously to can satisfy the different demands of user under the different situation, and then improve user's experience and feel.

In addition, the power supply circuit of the first embodiment of the present invention adopts a POE power supply circuit, and by this design, a stable operating voltage can be provided for the first driving circuit 11 and the second driving circuit 12; adopt POE supply circuit can change the socket of input into the net twine interface in addition, reduce the risk of electrocuteeing, easy to assemble, plug-and-play exempts from the wiring.

Further, referring to fig. 2, the color temperature switching circuit 16 further includes first switch circuits 161 corresponding to the number of lamp bodies, one end of each first switch circuit 161 is connected in series with the corresponding lamp body and then connected in parallel, and a common point at the other end of the plurality of first switch circuits 161 is connected to the first driving circuit 11.

Specifically, the first switch circuit 161 is a single pole, single throw switch.

It can be understood that the color temperature of the lamp body connected to each first switch circuit 161 is different, so that the lamp circuit 1 can switch different color temperatures by selecting different combinations of the plurality of first switches to be turned on or off. Illustratively, the color temperature switching circuit 16 of the present invention includes two lamp bodies with different color temperatures and two first switch circuits 161, the two lamp bodies with different color temperatures are respectively the LED1 lamp with color temperature 3000K and the LED2 lamp with color temperature 5000K, and the two first switch circuits 161 are respectively K1 and K2 and respectively correspond to connect the LED1 lamp and the LED2 lamp. In other embodiments, the two LED lamps with different color temperatures may also be implemented by using other color temperatures, and the LED lamps may respectively consist of a single LED lamp bead or multiple LED lamp beads, and may be set according to actual requirements. In addition, the number of the first switch circuits 161 and the number of the lamp bodies can be set according to actual requirements, as long as each first switch circuit 161 is correspondingly connected with one lamp body with different color temperatures.

In a specific application, referring to fig. 4, when the color temperature of the lamp circuit 1 needs to be switched, the power supply circuit 10 provides a corresponding working voltage for the first driving circuit 11, so that the first driving circuit 11 starts to work, and the color temperature switching circuit 16 starts to work. Specifically, the LED lamps with different color temperatures can be controlled to be switched on by selecting the on or off of K1 and/or K2, so that the lamp circuit 1 can reach different color temperatures. When the K1 is switched on and the K2 is switched off, the LED1 lamp is switched on, the color temperature of the whole lamp circuit 1 is 3000K, when the K2 is switched on and the K1 is switched off, the LED2 lamp is switched on, and the color temperature of the whole lamp circuit 1 is 5000K; when K1 switches on and K2 switches on, LED1 lamp and LED2 lamp all switch on this moment, and the colour temperature of whole lamps and lanterns circuit 1 is the average value of two LED lamps this moment, and the colour temperature of whole lamps and lanterns circuit 1 is 4000K this moment promptly. Therefore, the utility model discloses a lamps and lanterns circuit 1 can realize the function that three kinds of colour temperatures switched according to the combination that switches on or turn-off of switching K1 and K2 and then reach two LED lamps.

Further, with reference to fig. 2, the power conditioning circuit 17 includes at least two second switch circuits 171, one end of each second switch circuit 171 is connected in series with a resistor, a common point of the other ends of each second switch circuit 171 connected in parallel is connected to the second driving circuit 12, and a common point of the other ends of the plurality of resistors is grounded.

Specifically, the second switch circuit 171 is a single-pole single-throw switch.

It should be noted that the power adjusting circuit 17 is used for adjusting the output power of the lamp circuit 1. In addition, the number of the second switch circuits 171 and the number of the resistors may be set according to actual requirements, the resistance values of the resistors may be the same or different, different power outputs may be realized by selecting on/off combinations of the second switch circuits 171, and the number of the resistors connected to one end of each of the second switch circuits 171 may be set according to actual requirements. More specifically, in the embodiment of the present invention, the second switch circuit 171 includes K3, K4 and K5, and one end of each of the K3, K4 and K5 is correspondingly connected to a resistor. In specific application, the number of resistors connected into the lamp circuit 1 can be selected by selecting different on-off combinations of K3, K4 and K5, so that the power of the lamp circuit 1 can be adjusted. It can be understood that, since the operating voltage of the power supply circuit is constant, the magnitude of the current can be changed by changing the number of the connected resistors, that is, the smaller the resistor is, the larger the current correspondingly passes, that is, the higher the power is, and on the contrary, the larger the resistor is, the smaller the current correspondingly passes, that is, the lower the power is, so that different power output by the lamp circuit 1 can be adjusted by selecting different conduction combinations of the plurality of second switch circuits 171.

As another embodiment of the present invention, the first switch circuit 161 and the second switch circuit 171 can also be a toggle switch, each gear corresponds to a lamp or a resistor connected with different color temperatures, and the toggle switch is toggled to different gears to control the on-state channel, so as to switch the color temperature or adjust the power. The first switch circuit 161 and the second switch circuit 171 may also be another type of switch, for example, a first wireless communication module is disposed in the first switch circuit 161, a second wireless communication module is disposed in the second switch circuit 171, and the first wireless communication module and the second wireless communication module are in wireless communication with a remote client, respectively, and the remote client controls the corresponding switch circuit to be turned on or off to select the corresponding switch circuit to be turned on or off, thereby implementing the function of color temperature switching or power adjustment.

Please refer to fig. 4, the first driving circuit 11 at least includes a chip U1 and a peripheral circuit disposed on the chip U1, the chip U1 includes first to eighth pins, the second driving circuit 12 at least includes a chip U3 and a peripheral circuit disposed on the chip U3, and the chip U3 includes first to eighth pins. It should be noted that the chip U3 is a dimming chip and the model of the dimming chip is SY5867; the chip U1 is a dimming chip and the model of the dimming chip is QW2032.

Further, referring to fig. 3, the lamp circuit 1 further includes an isolation amplifying circuit 14, a light modulator 13, and an LED lamp 15 connected to the first driving circuit 11, the second driving circuit 12 is connected to the light modulator 13, and the second driving circuit 12 is connected to the first driving circuit 11 through the isolation amplifying circuit 14; the dimmer 13 is configured to send out a dimming signal and feed the dimming signal back to the second driving circuit 12, and after receiving the dimming signal, the second driving circuit 12 feeds the dimming signal back to the first driving circuit 11 through the isolation amplifying circuit 14 to adjust the brightness of the LED lamp 15.

Specifically, referring to fig. 4, the output terminal of the dimmer 13 is connected to the fifth pin of the chip U3, the sixth pin of the chip U3 is connected to the input terminal of the isolation amplifying circuit 14, and the output terminal of the isolation amplifying circuit 14 is connected to the second pin of the chip U1.

It should be noted that the fifth pin of the chip U3 is a dim i pin, the sixth pin of the chip U3 is a DIMO pin, and the dimmer 13 is configured to send out a dimming signal, and the dimming signal is a 0-10V dimming signal.

It can be understood that, in a specific application, when the DIM i pin of the chip U3 receives an external dimming signal input, that is, when the DIM i pin of the chip U3 receives a variable voltage of 0 to 10V, the DIM i pin of the chip U3 outputs a PWM signal with a variable duty ratio, and is isolated and amplified by the isolation and amplification circuit 14, that is, the PWM signal is output as a high level through the isolation and amplification circuit 14 and fed back to the DIM i pin of the chip U1, and the DIM i pin of the chip U1 receives a high level, that is, the chip U1 is controlled to output different PWM signals to the LED lamp 15, so that the brightness of the LED lamp 15 is adjusted, and the light of the LED lamp 15 is adjustable.

Specifically, referring to fig. 4, the first pin (i.e., the CT end) of the chip U1 is connected to one end of the resistor R44, the other end of the resistor R44 is connected to one end of the capacitor C12, the other end of the capacitor C12 is connected to the fourth pin of the chip U1, a common point of the two is grounded, the other end of the resistor R44 is connected to a cathode of the diode D15, one end of the filter capacitor EC5, one end of the capacitor C8, one end of the resistor R46 and an anode of the LED lamp 15, the eighth pin (i.e., the OpenPrt end) of the chip U1 is connected to an anode of the diode D15, one end of the inductor L3 is connected, the other end of the inductor is connected to one end of the resistor RS4, the resistor RS5, the resistor RS6 and one end of the resistor RS7, the common point of the resistor RS4, the resistor RS5, the resistor RS6 and the one end of the resistor RS7 is connected to a sixth pin (i.e., the CSP end) of the chip U1, and the common point of the other ends of the filter capacitor RS4, the resistor RS5, the common point of the other end of the capacitor R4, the resistor RS5 and the other end of the common point of the capacitor C5 are connected to a common point of the filter capacitor C4 of the switch R8. The diode D15, the resistor R44 and the capacitor C12 are used for providing a path to avoid sudden change of load current, and the current can change more gradually to smooth the current. The signal output by the isolation amplifying circuit 14 controls the on/off of the LED lamp 15 through the luminance control end (i.e., DIM end) of the chip U1, the setting and adjustment of the output current of the chip U1 are realized through the resistor RS4, the resistor RS5, the resistor RS6 and the resistor RS7, the conversion of the energy between circuits is realized through the inductor L3, and the filter capacitor EC5 and the capacitor C8 play a role in filtering, thereby reducing the ripple of the output current.

With reference to fig. 4, the fifth pin (i.e., DIMI terminal) of the chip U3 is connected to one terminal of the capacitor C10, the cathode of the diode D10 is connected to one terminal of the resistor R33, the other terminal of the capacitor C10 is connected to the anode of the diode D10, the common point of the two terminals is grounded, the common point and the other terminal of the resistor R33 are connected to the input terminals V1 and V2, the dimmer 13 is connected to the input terminals V1 and V2, the sixth pin (i.e., DIMO terminal) of the chip U3 is connected to the first pin of the optocoupler U2 through the resistor R34, the second pin of the optocoupler U2 is grounded, the third pin of the optocoupler U2 is grounded, the fourth pin of the optocoupler U2 is connected to the second pin (i.e., DIM terminal) of the chip U1, the second pin (i.e., ISET terminal) of the chip U3 is connected to one terminal of the resistor R38 and the resistor R37, the third pin (i.e., VLOW terminal) of the chip U3 is connected to the common point of the resistor R38 and the common point of the diode C terminal of the diode C11, the anode of the chip U3 is connected to the anode of the diode C11, and the diode C11 is connected to the anode of the diode C11, and the diode R11.

Further, the isolation amplifying circuit 14 includes an optocoupler.

Specifically, referring to fig. 4, the isolation amplifying circuit 14 includes an optical coupler U2, a first pin of the optical coupler U2 is connected to a sixth pin (i.e., a DIMO pin) of the chip U3, a second pin of the optical coupler U2 is grounded, a third pin of the optical coupler U2 is grounded, and a fourth pin of the optical coupler U2 is connected to a second pin (i.e., a DIM pin) of the chip U1.

Further, with reference to fig. 3, the lamp circuit 1 further includes a DC-DC circuit 18, and the output terminal of the power supply circuit 10 is connected to the DC-DC circuit 18.

It can be understood that, through this design, the output end of the DC-DC circuit outputs a corresponding voltage to supply corresponding electric energy to the equipment to be powered.

To sum up, the utility model discloses a lamps and lanterns circuit 1 of first embodiment is at the during operation, and its specific working process is: the power supply circuit 10 provides corresponding working voltages for the first driving circuit 11 and the second driving circuit 12 to enable the first driving circuit 11 and the second driving circuit 12 to work, so that the first driving circuit 11 drives the color temperature switching circuit 16 to work, the second driving circuit 12 drives the power adjusting circuit 17 to work, and when a user needs to switch color temperatures, the color temperature switching of the lamp circuit 1 is achieved by selecting the combination of on or off of the plurality of first switching circuits 161. When a user needs to adjust power, the power adjustment of the lamp circuit 1 is further realized by selecting the combination of the on and off of the plurality of second switch circuits 171. When a user needs to adjust the light brightness of the LED lamp 15, the second driving circuit 12 converts an external dimming signal into PWM signals with different duty ratios by itself and outputs the PWM signals, the output PWM signals are isolated and amplified by the isolating and amplifying circuit 14 and then fed back to the first driving circuit 11, and the first driving circuit 11 outputs PWM signals with different duty ratios, thereby implementing the light adjustment of the LED lamp 15.

Please refer to fig. 5, as another implementation manner of the second embodiment of the present invention, the lamp circuit 2 includes a power supply circuit 21, a DC-DC circuit 22, a first voltage-reducing circuit 23, a second voltage-reducing circuit 24, a first main control circuit 25, a second main control circuit 26, a color temperature switching circuit 27 connected to the first main control circuit 25 and a power adjusting circuit 28 connected to the second main control circuit 26, the power supply circuit 21 is connected to the DC-DC circuit 22, one end of the DC-DC circuit 22 is connected to the first main control circuit 25 through the first voltage-reducing circuit 23, the other end of the DC-DC circuit 22 is connected to the second main control circuit 26 through the second voltage-reducing circuit 24, the color temperature switching circuit 27 includes at least two lamp bodies with different color temperatures and first switch circuits 271 whose number corresponds to the number of the lamp bodies, the power adjusting circuit 28 includes at least two resistors and a second switch circuit 281 corresponding to the number of the resistors. In addition, the lighting device circuit 2 further includes a wireless communication module 29, and the user terminal can wirelessly control the first main control circuit 25 and the second main control circuit 26 through the wireless communication module 29, so that the first main control circuit 25 and the second main control circuit 26 output PWM signals with different ratios to turn on or off the first switch circuit 271 and the second switch circuit 281, thereby implementing the functions of color temperature switching and power regulation.

It should be noted that the power supply circuit 21 outputs a stable working voltage through the DC-DC circuit 22, and then provides a 5V working voltage for the first main control circuit 25 through the first voltage reduction circuit 23 so that the first main control circuit 25 can work normally, and provides a 5V working voltage for the second main control circuit 26 through the second voltage reduction circuit 24 so that the second main control circuit 26 can work normally.

More specifically, the first switch circuit 271 and the second switch circuit 281 are MOS transistors, and a control terminal (i.e., a gate) of each MOS transistor is connected to a corresponding main control circuit.

Referring to fig. 6, the first main control circuit 25 includes a chip U6, a sixth pin of the chip U6 is connected to the gate of the MOS transistor Q1 through a resistor R46, a seventh pin of the chip U6 is connected to the gate of the MOS transistor Q2 through a resistor R43, and the conductive ends of the MOS transistor Q1 and the MOS transistor Q2 are respectively and correspondingly connected to LED lamps with different color temperatures. When the color temperature of the lamp circuit 2 needs to be switched, the user terminal controls the first main control circuit 25 to output PWM signals with different duty ratios through the wireless communication module 29, so as to control the corresponding first switch circuit 271 to be turned on or off, thereby implementing the function of switching the color temperature of the lamp circuit 2.

Referring to fig. 6, the second main control circuit 26 includes a chip U8, a fourth pin of the chip U8 is connected to the gate of the MOS transistor Q3 through a resistor, a sixth pin of the chip U8 is connected to the gate of the MOS transistor Q4 through a resistor, a seventh pin of the chip U8 is connected to the gate of the MOS transistor Q5 through a resistor, the sources of the MOS transistor Q3, the MOS transistor Q4, and the MOS transistor Q5 are connected to the wireless communication module 29, and the drains of the MOS transistor Q3, the MOS transistor Q4, and the MOS transistor Q5 are connected to the output terminal of the DC-DC circuit 22. When the power needs to be adjusted, the user terminal controls the second main control circuit 26 to output PWM signals with different ratios through the wireless communication module 29, so as to control the corresponding MOS transistors Q3, Q4, and Q5 to be turned on or off, thereby implementing the function of adjusting the power of the lamp circuit 2.

To sum up, the utility model discloses a lamp circuit 2 of second embodiment is at the during operation, when needs switch the colour temperature, user terminal passes through the PWM signal of the different duty cycles of the first master control circuit 25 output of wireless communication module 29 control and then controls the combination that switches on or turn-off of the corresponding first switch circuit 271 to realize the switching of colour temperature. When the power needs to be adjusted, the user terminal controls the second main control circuit 26 to output PWM signals with different duty ratios through the wireless communication module 29, so as to control the on/off combination of the corresponding second switch circuit 281, thereby implementing the adjustment of the power.

Referring to fig. 7, a third embodiment of the present invention provides a lamp 3, the lamp 3 includes a main body 31 and a lamp circuit 32 disposed in the main body 31, the lamp circuit 32 is the lamp circuit 1 provided by the first embodiment of the present invention or the lamp circuit 2 provided by the second embodiment of the present invention.

Understandably, the utility model discloses a lamps and lanterns 3 of third embodiment have with the utility model discloses a lamps and lanterns circuit 1 of first embodiment or the lamps and lanterns circuit 2 of second embodiment the same beneficial effect, no longer describe herein.

1. the embodiment of the utility model provides a lamp circuit when power supply circuit provides corresponding operating voltage for first drive circuit and second drive circuit, and then makes first drive circuit and second drive circuit can normally work. At the moment, the color temperature switching circuit connected with the first driving circuit starts to work so as to realize the color temperature switching of the lamp circuit; and the power regulation power connected with the second driving circuit starts to work so as to realize that the output power of the lamp circuit is adjustable. Therefore, the utility model discloses a lamps and lanterns circuit can realize the function that the colour temperature switches and power regulation simultaneously to can satisfy the different demands of user under the different situation, and then improve user's experience and feel.

3. The embodiment of the utility model provides a, because supply circuit's operating voltage is certain, can change the size of electric current through the resistance quantity that changes the access, it is also that the resistance is the electric current that then corresponds the through more and also be power more big that the resistance is little, on the contrary the resistance is more and then correspond the electric current that passes through and also be power more little that the electric current is little that the power is little, consequently can be through selecting the different combination that switches on of a plurality of second switch circuits and then adjust the different power of lamp body output.

4. The embodiment of the utility model provides a lamp circuit, when the fifth pin of chip U3 received when the external dimming signal input, also be when the fifth pin of chip U3 receives 0-10V variable voltage, the PWM signal that duty cycle changes can be exported to the sixth pin of chip U3, and keep apart through keeping apart amplifier circuit and amplify, also be that this PWM signal exports for the high level behind keeping apart amplifier circuit, and feed back to chip U1's second pin, the high level is received to chip U1's second pin, also be that control chip U1 exports different PWM signal to LED lamp, and then make the regulation of LED lamp luminance, thereby realize the adjustable light of LED lamp and adjust

5. The embodiment of the utility model provides a lamp circuit for corresponding voltage of output of DC-DC circuit and then for the equipment that needs the power supply provides corresponding electric energy.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A lamp circuit for driving at least two lamp bodies with different color temperatures, comprising: the lamp circuit comprises a power supply circuit, a first driving circuit, a second driving circuit, a color temperature switching circuit connected with the first driving circuit and a power adjusting circuit connected with the second driving circuit, the power supply circuit is respectively connected with the first driving circuit and the second driving circuit, the color temperature switching circuit is used for switching the color temperature of the lamp circuit, and the power adjusting circuit is used for adjusting the output power of the lamp circuit;

2. The lamp circuit of claim 1, wherein: the color temperature switching circuit also comprises first switch circuits corresponding to the number of the lamp bodies, one end of each first switch circuit is connected with the corresponding lamp body in series and then connected with the corresponding lamp body in parallel, and a common point at the other end of each first switch circuit is connected with the first driving circuit.

3. The lamp circuit of claim 2, wherein: the first switch circuit is a single-pole single-throw switch.

4. The lamp circuit of claim 1, wherein: the power regulating circuit comprises at least two second switch circuits, one end of each second switch circuit is correspondingly connected with a resistor in series, a common point of the other ends of the second switch circuits after being connected in parallel is connected with the second driving circuit, and the common point of the other ends of the resistors is grounded.

5. The lamp circuit of claim 4, wherein: the second switching circuit is a single-pole single-throw switch.

6. The lamp circuit of claim 1, wherein: the lamp circuit further comprises an isolation amplifying circuit, a light modulator and an LED lamp connected with the first driving circuit, the second driving circuit is connected with the light modulator, and the second driving circuit is connected with the first driving circuit through the isolation amplifying circuit; the dimmer is used for sending a dimming signal and feeding the dimming signal back to the second driving circuit, and the second driving circuit receives the dimming signal and feeds the dimming signal back to the first driving circuit through the isolation amplifying circuit so as to adjust the brightness of the LED lamp.

7. The lamp circuit of claim 6, wherein: the first driving circuit comprises a chip U1, the chip U1 at least comprises a first pin to an eighth pin, the second driving circuit comprises a chip U3, and the chip U3 at least comprises a first pin to an eighth pin;

8. The lamp circuit of claim 6, wherein: the isolation amplification circuit includes an optocoupler.

9. The lamp circuit of claim 1, wherein: the lamp circuit further comprises a DC-DC circuit, and the output end of the power supply circuit is connected with the DC-DC circuit.

10. A light fixture, characterized by: the luminaire comprising a luminaire circuit as claimed in any one of claims 1-9.