CN213028629U - Ultraviolet sterilization and LED illumination integrated lamp circuit with timing sterilization function - Google Patents

Abstract

The utility model discloses an ultraviolet sterilization and integrative lamp circuit of LED illumination with regularly function of disinfecting, including electronic ballast circuit, mercury ultraviolet fluorescent tube, high frequency rectifier circuit, LED light emitting module, pulse control circuit and electronic switch circuit, electronic ballast circuit for the electronic ballast circuit that has open a way protect function, pulse control circuit has LED illumination control state and ultraviolet sterilization control state, preset delay time and ultraviolet sterilization time in the pulse control circuit, the pulse control circuit power-on after, its sense terminal receives a voltage pulse signal, just switches over from current control state to another control state, this voltage pulse signal can be produced through the operation of reclosing after carrying out the short break-off to the external control switch who connects integrative lamp circuit and commercial power; the advantage is that simple structure, the cost is lower, possesses higher competitive advantage on technique and cost.

Description

Ultraviolet sterilization and LED illumination integrated lamp circuit with timing sterilization function

Technical Field

The utility model relates to an ultraviolet sterilization and integrative lamp circuit of LED illumination especially relate to an ultraviolet sterilization and integrative lamp circuit of LED illumination with regularly function of disinfecting.

Background

With the increasing demand for public health, many public places are required to be disinfected regularly. The ultraviolet sterilization method is a rapid and effective surface sterilization method, and is currently popularized and applied to various public places including many occasions with LED illumination.

Because ultraviolet rays are harmful to human bodies, in general, when the ultraviolet germicidal lamp is turned on, people can be far away from the scene, and meanwhile, for energy conservation, the LED illuminating lamp is turned off at the moment. When the LED illuminating lamp is required to be turned on, people are generally on site, and the ultraviolet sterilizing lamp is required to be turned off at the moment. Therefore, in general, the LED illumination and the uv sterilization do not need to be performed simultaneously.

The ultraviolet germicidal lamp for sterilizing large area surface has mercury ultraviolet lamp tube as its ultraviolet light source and electronic ballast as the driving power source to convert the AC voltage from the connected commercial power source into AC current of constant size to drive the mercury ultraviolet lamp tube to emit ultraviolet light. The mercury ultraviolet lamp tube is of a tubular structure, and two ends of the mercury ultraviolet lamp tube are respectively provided with an alternating voltage access end. When the two ends of the mercury ultraviolet lamp tube are not conducted, the electronic ballast outputs high voltage, and under the action of the high voltage, the mercury vapor inside the mercury ultraviolet lamp tube is ionized to conduct the two ends of the mercury ultraviolet lamp tube. When the voltage at the two ends of the mercury ultraviolet lamp tube is reduced to working voltage, the electronic ballast outputs constant current to drive the mercury ultraviolet lamp tube to work. When the mercury ultraviolet lamp tube works, a certain voltage is arranged at two ends, and when the voltage connected at the two ends is lower than the working voltage, the current flowing through the ultraviolet lamp tube is reduced to zero, the mercury ultraviolet lamp tube does not consume electric energy any more, and the mercury ultraviolet lamp tube does not emit ultraviolet rays. The LED illuminating lamp used conventionally at present usually comprises an LED light-emitting module and an LED constant-current driving power supply inside, wherein the LED constant-current driving power supply converts the accessed commercial power alternating-current voltage into a constant direct current to drive the LED light-emitting module to emit light.

Currently, designers have proposed an integrated lamp circuit that can switch between ultraviolet sterilization and LED lighting, the integrated lamp circuit having both ultraviolet sterilization and LED lighting functions. The integrated lamp circuit is simultaneously provided with the electronic ballast for driving the mercury ultraviolet lamp tube and the LED driving power supply for driving the LED light-emitting module, and is actually a simple combination of the ultraviolet sterilizing lamp and the LED illuminating lamp, so that the integrated lamp is not only complex in product structure, but also high in cost, and does not have competitive advantages in technology and cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a ultraviolet sterilization and LED illumination integrative lamp circuit with regularly function of disinfecting that simple structure, the cost is lower possesses higher competitive advantage in technique and cost is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the ultraviolet sterilization and LED illumination integrated lamp circuit with the timed sterilization function comprises an electronic ballast circuit, a mercury ultraviolet lamp tube, a high-frequency rectifying circuit, an LED light-emitting module, a pulse control circuit and an electronic switch circuit, wherein the electronic ballast circuit is the electronic ballast circuit with the open-circuit protection function, the electronic ballast circuit is provided with a live wire input end, a zero line input end, a first output end, a second output end, a control end, a direct current voltage output end and a negative electrode, the mercury ultraviolet lamp tube is provided with a first input end and a second input end, the high-frequency rectifying circuit is provided with a first alternating current input end, a second alternating current input end, an output positive electrode and an output negative electrode, the LED light-emitting module is provided with a positive electrode and a negative electrode, the working voltage of the LED light-emitting module is smaller than the working voltage of the mercury ultraviolet lamp tube, and the electronic switch circuit is provided with, The high-frequency rectifier circuit comprises a negative electrode, an output end and a control end, wherein the pulse control circuit is provided with a detection end, a positive electrode, a negative electrode, a positive output end, a negative output end and a control end, a live wire access end of the electronic ballast circuit is used as a live wire access end of the integrated lamp circuit, a zero line input end of the electronic ballast circuit is used as a zero line access end of the integrated lamp circuit, a first output end of the electronic ballast circuit is connected with a first input end of the mercury ultraviolet lamp tube, a second output end of the electronic ballast circuit is connected with a second input end of the mercury ultraviolet lamp tube, a first alternating current input end of the high-frequency rectifier circuit is connected with a first output end of the electronic ballast circuit, a second alternating current input end of the high-frequency rectifier circuit is connected with a second output end of the electronic ballast circuit, and an output positive electrode of the high-frequency rectifier circuit is respectively connected with a positive electrode of the electronic switch circuit and the LED lamp The positive pole of the optical module is connected, the output negative pole of the high-frequency rectifying circuit is connected with the negative pole of the electronic switch circuit, the cathode of the LED light-emitting module is connected with the output end of the electronic switch circuit, the detection end of the pulse control circuit is connected with the input end of the live wire or the input end of the zero wire of the electronic ballast circuit, the positive pole of the pulse control circuit is connected with the DC voltage output end of the electronic ballast circuit, the control end of the pulse control circuit is connected with the control end of the electronic ballast circuit, the positive output end of the pulse control circuit is connected with the control end of the electronic switch circuit, the negative output end of the pulse control circuit is connected with the negative electrode of the electronic switch circuit, and the negative electrode of the pulse control circuit is connected with the negative electrode of the electronic ballast circuit; the pulse control circuit has two control states, namely an LED illumination control state and an ultraviolet sterilization control state, delay time and ultraviolet sterilization time are preset in the pulse control circuit, after the pulse control circuit is powered on, a detection end of the pulse control circuit is switched to the other control state from the current control state every time the detection end receives a voltage pulse signal, and the voltage pulse signal can be generated by carrying out short-time disconnection and then closing operation on an external control switch connected with the integrated lamp circuit and commercial power; the default state of the pulse control circuit after being electrified is an LED illumination control state, when the pulse control circuit is in the LED illumination control state, the control end of the pulse control circuit is in a cut-off state without outputting voltage and current, and the positive output end and the negative output end of the pulse control circuit are in the cut-off state; when the external control switch is closed, the integrated lamp circuit is connected with a mains supply, the pulse control circuit is in an LED illumination control state, the electronic ballast circuit starts to work, the electronic ballast circuit converts an alternating-current voltage of the connected mains supply into a high-frequency alternating-current voltage to be output between a first output end and a second output end of the electronic ballast circuit, and simultaneously outputs a direct-current voltage at a direct-current voltage output end of the electronic ballast circuit, the high-frequency rectifying circuit is connected with the high-frequency alternating-current voltage to output a direct-current voltage between an output anode and an output cathode of the electronic ballast circuit, the output end and the cathode of the electronic ballast circuit are conducted at the moment, the LED light-emitting module is in a light-emitting state, and the peak voltage of the high-frequency alternating-current voltage output between the first output end and the second output end of the electronic ballast circuit is only, the mercury ultraviolet lamp tube can not emit ultraviolet rays, and the integrated lamp circuit is in an LED illumination state; at the moment, if the external control switch is operated once after being turned off and then turned on, the detection end of the pulse control circuit receives a voltage pulse signal and enters an ultraviolet sterilization control state, the control end of the pulse control circuit is kept in a cut-off state, the positive output end and the negative output end of the pulse control circuit are also kept in a cut-off state, the pulse control circuit starts to delay timing, when the timing reaches the delay time, the pulse control circuit enters sterilization timing, the control end of the pulse control circuit keeps the cut-off state unchanged, the positive output end and the negative output end of the pulse control circuit are turned into a conducting state, the output end and the negative electrode of the electronic switch circuit are cut off, the LED light-emitting circuit does not emit light, and after the output end and the negative electrode of the electronic switch circuit are cut off, the output high voltage between the first output end and the second output end of the electronic ballast circuit is, when the voltage between the first output end and the second output end of the electronic ballast circuit is increased to enable the mercury ultraviolet lamp tube to be ionized, discharged and conducted, further the voltage output between the first output end and the second output end of the electronic ballast circuit is reduced to the steady-state working voltage of the mercury ultraviolet lamp tube, current with constant magnitude is output between the first output end and the second output end of the electronic ballast circuit at the moment, the mercury ultraviolet lamp tube is driven by the constant current to emit ultraviolet rays, the integrated lamp is in an ultraviolet sterilization state, when the ultraviolet sterilization time is reached in timing, the control end of the pulse control circuit starts to output the voltage and the current, the voltage and the current are stopped to be output between the first output end and the second output end of the electronic ballast circuit, and at the moment, the LED light-emitting module does not emit light, the mercury ultraviolet lamp tube does not emit ultraviolet rays until the integrated lamp circuit is powered off.

The pulse control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a first diode, a second diode, a first integrated circuit chip, an optical coupler, a buzzer and a first MOS (metal oxide semiconductor) tube, wherein the first diode is a voltage regulator tube, the second diode is a rectifier diode, the reference model of the optical coupler is PC817, the first integrated circuit chip is a singlechip chip and is provided with a positive pole, a negative pole, a digital input end and three digital output ends, the three digital output ends are respectively a first output end, a second output end and a third output end, one end of the first resistor is the positive pole of the pulse control circuit, the other end of the first resistor, the negative pole of the first diode, one end of the first capacitor, the positive pole of the buzzer and the positive pole of the singlechip chip are connected, one end of the second resistor is the detection end of the pulse control circuit, the other end of the second resistor is connected with one end of the third resistor, the other end of the third resistor, one end of the fourth resistor and one end of the second capacitor are connected with the digital input end of the single chip microcomputer chip, the first output end of the single chip microcomputer chip is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with the anode of the second diode, the cathode of the second diode is the control end of the pulse control circuit, the second output end of the single chip microcomputer chip is connected with the grid electrode of the first MOS tube, the drain electrode of the first MOS tube is connected with the cathode of the buzzer, and the third output end of the single chip microcomputer chip is connected with one end of the sixth resistor, the other end of sixth resistance with the positive pole of opto-coupler input side connect, the current collector of opto-coupler output side do pulse control circuit's positive output, the transmission of opto-coupler output side extremely pulse control circuit's negative output, the negative pole of singlechip chip the other end of fourth resistance the other end of first electric capacity the other end of second electric capacity the positive pole of first diode the negative pole of opto-coupler input side and the source electrode of first MOS pipe connect its link to be pulse control circuit's negative pole. The pulse control circuit utilizes the single chip microcomputer chip to time and detect pulse signals which are switched into the mains supply and are switched off and then closed temporarily, can adopt the current mature single chip microcomputer program to set control level signals of all ports of each pulse control circuit, is convenient to design and low in cost, and also has the function of controlling and sending out warning sound when entering an ultraviolet sterilization state.

The electronic switch circuit comprises a seventh resistor, an eighth resistor, a third capacitor, a fourth capacitor, a third diode and a second MOS tube, the third diode is a voltage stabilizing diode, one end of the seventh resistor is connected with one end of the fourth capacitor, and the connecting end of the seventh resistor is the anode of the electronic switch circuit, the other end of the seventh resistor is connected with one end of the eighth resistor, the other end of the eighth resistor, one end of the third capacitor, the cathode of the third diode are connected with the grid of the second MOS tube, the drain electrode of the second MOS tube is the output end of the electronic switch circuit, the other end of the third capacitor, the cathode of the third diode, the source electrode of the second MOS tube and the other end of the fourth capacitor are connected, and the connecting end of the second MOS tube and the other end of the fourth capacitor is the cathode of the electronic switch circuit.

The high-frequency rectifying circuit comprises a fourth diode, a fifth diode, a sixth diode and a seventh diode, the fourth diode, the fifth diode, the sixth diode and the seventh diode are all high-frequency high-voltage rectifier diodes, the anode of the fourth diode is connected with the cathode of the seventh diode, the connection end of the fourth diode is a second alternating current input end of the high-frequency rectification circuit, the anode of the fifth diode is connected with the cathode of the sixth diode, the connection end of the fifth diode is a first alternating current input end of the high-frequency rectification circuit, the cathode of the fourth diode is connected with the cathode of the fifth diode, and the connecting end of the fourth diode is the output anode of the high-frequency rectifying circuit, the anode of the sixth diode is connected with the anode of the seventh diode, and the connecting end of the sixth diode is the output cathode of the high-frequency rectifying circuit. Compared with the prior art, the utility model has the advantages of through electronic ballast circuit, mercury ultraviolet fluorescent tube, high frequency rectifier circuit, LED light emitting module, pulse control circuit and electronic switch circuit construct the integrative lamp circuit of ultraviolet sterilization and LED illumination that has regularly function of disinfecting, electronic ballast circuit is the electronic ballast circuit that has open a way protect function, electronic ballast circuit has live wire input, zero line input, first output, the second output, the control end, direct current voltage output and negative pole, mercury ultraviolet fluorescent tube has first input and second input, high frequency rectifier circuit has first alternating current input, the second alternating current input, output positive pole and output negative pole, LED light emitting module has positive pole and negative pole, the operating voltage of LED light emitting module is less than the operating voltage of mercury ultraviolet fluorescent tube, electronic switch circuit has positive pole, positive pole, The pulse control circuit is provided with a detection end, a positive electrode, a negative electrode, a positive output end, a negative output end and a control end, a live wire access end of the electronic ballast circuit is used as a live wire access end of the integrated lamp circuit, a zero line input end of the electronic ballast circuit is used as a zero line access end of the integrated lamp circuit, a first output end of the electronic ballast circuit is connected with a first input end of the mercury ultraviolet lamp tube, a second output end of the electronic ballast circuit is connected with a second input end of the mercury ultraviolet lamp tube, a first alternating current input end of the high-frequency rectifying circuit is connected with the first output end of the electronic ballast circuit, a second alternating current input end of the high-frequency rectifying circuit is connected with the second output end of the electronic ballast circuit, an output positive electrode of the high-frequency rectifying circuit is respectively connected with a positive electrode of the electronic switch circuit and a positive electrode of the LED light-emitting module, and an, the cathode of the LED light-emitting module is connected with the output end of the electronic switch circuit, the detection end of the pulse control circuit is connected with the live wire input end or the zero line input end of the electronic ballast circuit, the anode of the pulse control circuit is connected with the direct current voltage output end of the electronic ballast circuit, the control end of the pulse control circuit is connected with the control end of the electronic ballast circuit, the positive output end of the pulse control circuit is connected with the control end of the electronic switch circuit, the negative output end of the pulse control circuit is connected with the cathode of the electronic switch circuit, the cathode of the pulse control circuit is connected with the cathode of the electronic ballast circuit, the pulse control circuit has two control states, the LED lighting control state and the ultraviolet sterilization control state, the pulse control circuit is preset with delay time and ultraviolet sterilization time, and after the pulse control circuit is electrified, the detection end of the pulse control circuit receives a voltage pulse, the current control state is switched to another control state, the voltage pulse signal can be generated by performing the operation of closing after short-time disconnection on an external control switch which connects the integrated lamp circuit and the commercial power, the default state after the pulse control circuit is electrified is the LED illumination control state, when the pulse control circuit is in the LED illumination control state, the control end of the pulse control circuit is in the cut-off state which does not output voltage and current, the positive output end and the negative output end are in the cut-off state, when the control end of the pulse control circuit is in the cut-off state, the electronic ballast circuit keeps working, when the positive output end and the negative output end of the pulse control circuit are in the cut-off state, the output end and the negative electrode of the electronic switch circuit are connected, and when the positive output end and the negative output end of the pulse control circuit are in the connected state, the output end and the negative electrode of the electronic switch circuit are, when the external control switch is closed, the integrated lamp circuit is connected to mains supply, the pulse control circuit is in an LED illumination control state, the electronic ballast circuit starts to work, the electronic ballast circuit converts the alternating-current voltage of the connected mains supply into high-frequency alternating-current voltage to be output between a first output end and a second output end of the electronic ballast circuit, and simultaneously outputs direct-current voltage at a direct-current voltage output end of the electronic ballast circuit, the high-frequency rectification circuit is connected to the high-frequency alternating-current voltage to output direct-current voltage between an output anode and an output cathode of the electronic ballast circuit, at the moment, the output end and the cathode of the electronic switch circuit are conducted, the LED light-emitting module is in a light-emitting state, the; at the moment, if the external control switch is operated once after being turned off and then turned on, the detection end of the pulse control circuit receives a voltage pulse signal and enters an ultraviolet sterilization control state, the control end of the pulse control circuit is kept in a cut-off state, the positive output end and the negative output end of the pulse control circuit are also kept in a cut-off state, the pulse control circuit starts to delay time counting, when the time counting reaches the delay time, the pulse control circuit enters sterilization time counting, the control end of the pulse control circuit keeps the cut-off state unchanged, the positive output end and the negative output end of the pulse control circuit are in a conduction state, the output end and the negative electrode of the electronic switch circuit are cut off, the LED light-emitting circuit does not emit light, the mercury ultraviolet lamp tube emits ultraviolet light, the integrated lamp is in an ultraviolet sterilization state, and when the time counting reaches the ultraviolet sterilization time, the control end of the pulse control circuit starts to output voltage and current, LED light module does not give out light this moment, and mercury ultraviolet fluorescent tube does not send the ultraviolet ray, cuts off the power supply until integrative lamp circuit, from this the utility model discloses simple structure, the cost is lower, possesses higher competitive edge on technique and cost.

Drawings

FIG. 1 is a block diagram of the ultraviolet sterilizing and LED lighting integrated lamp circuit with the timing sterilizing function of the present invention;

fig. 2 is a partial circuit diagram of the ultraviolet sterilization and LED illumination integrated lamp circuit with the timed sterilization function of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example (b): as shown in FIG. 1, an ultraviolet sterilizing and LED lighting integrated lamp circuit with a timed sterilizing function comprises an electronic ballast circuit, a mercury ultraviolet lamp tube, a high-frequency rectifying circuit, an LED light-emitting module, a pulse control circuit and an electronic switching circuit, wherein the electronic ballast circuit is the electronic ballast circuit with an open-circuit protection function, the electronic ballast circuit is provided with a live wire input end, a zero line input end, a first output end, a second output end, a control end, a direct current voltage output end and a negative electrode, the mercury ultraviolet lamp tube is provided with a first input end and a second input end, the high-frequency rectifying circuit is provided with a first alternating current input end, a second alternating current input end, an output positive electrode and an output negative electrode, the LED light-emitting module is provided with a positive electrode and a negative electrode, the working voltage of the LED light-emitting module is less than the working voltage of the mercury, the pulse control circuit is provided with a detection end, a positive electrode, a negative electrode, a positive output end, a negative output end and a control end, wherein a live wire access end of the electronic ballast circuit is used as a live wire access end of the integrated lamp circuit, a zero line input end of the electronic ballast circuit is used as a zero line access end of the integrated lamp circuit, a first output end of the electronic ballast circuit is connected with a first input end of the mercury ultraviolet lamp tube, a second output end of the electronic ballast circuit is connected with a second input end of the mercury ultraviolet lamp tube, a first alternating current input end of the high-frequency rectifying circuit is connected with a first output end of the electronic ballast circuit, a second alternating current input end of the high-frequency rectifying circuit is connected with a second output end of the electronic ballast circuit, an output positive electrode of the high-frequency rectifying circuit is respectively connected with a positive electrode of the electronic switch circuit and a positive electrode of the, the negative pole of the LED light-emitting module is connected with the output end of the electronic switch circuit, the detection end of the pulse control circuit is connected with the live wire input end or the zero line input end of the electronic ballast circuit, the positive pole of the pulse control circuit is connected with the direct-current voltage output end of the electronic ballast circuit, the control end of the pulse control circuit is connected with the control end of the electronic ballast circuit, the positive output end of the pulse control circuit is connected with the control end of the electronic switch circuit, the negative output end of the pulse control circuit is connected with the negative pole of the electronic switch circuit, and the negative pole of the pulse control circuit is connected with the negative pole of the electronic ballast circuit; the pulse control circuit has two control states, namely an LED illumination control state and an ultraviolet sterilization control state, delay time and ultraviolet sterilization time are preset in the pulse control circuit, after the pulse control circuit is electrified, a detection end of the pulse control circuit is switched to the other control state from the current control state every time the pulse control circuit receives a voltage pulse signal, the voltage pulse signal can be generated by carrying out short-time disconnection (disconnection time is preset according to use requirements) and then closing operation on an external control switch for connecting the integrated lamp circuit and commercial power, the default state after the pulse control circuit is electrified is the LED illumination control state, when the pulse control circuit is in the LED illumination control state, the control end of the pulse control circuit is in a cutoff state of not outputting voltage and current, the position between a positive output end and a negative output end is in a cutoff state, and when the control end of the pulse control circuit is in the cutoff state, the electronic ballast circuit keeps working, when the positive output end and the negative output end of the pulse control circuit are in a cut-off state, the output end and the negative electrode of the electronic switch circuit are conducted, and when the positive output end and the negative output end of the pulse control circuit are in a conduction state, the output end and the negative electrode of the electronic switch circuit are cut off; when the external control switch is closed, the integrated lamp circuit is connected with mains supply, the pulse control circuit is in an LED lighting control state, the electronic ballast circuit starts to work, the electronic ballast circuit converts the connected mains supply alternating voltage into high-frequency alternating voltage to be output between a first output end and a second output end of the electronic ballast circuit, and simultaneously outputs direct voltage at a direct voltage output end of the electronic ballast circuit, the high-frequency rectifying circuit is connected with the high-frequency alternating voltage to output direct voltage between an output anode and an output cathode of the electronic ballast circuit, the output end and the cathode of the electronic switch circuit are conducted at the moment, the LED light-emitting module is in a light-emitting state, the peak value voltage of the high-frequency alternating voltage output between the first output end and the second output end of the electronic ballast circuit is only slightly higher than the working voltage of the LED light-emitting module, the ultraviolet lamp, the integrated lamp circuit is in an LED illumination state; at the moment, if the external control switch is operated once after being turned off and then turned on, the detection end of the pulse control circuit receives a voltage pulse signal and enters an ultraviolet sterilization control state, the control end of the pulse control circuit is kept in a cut-off state, the positive output end and the negative output end of the pulse control circuit are also kept in a cut-off state, the pulse control circuit starts to delay timing, when the timing reaches delay time, the pulse control circuit enters sterilization timing, the control end of the pulse control circuit keeps the cut-off state unchanged, the positive output end and the negative output end of the pulse control circuit are in a conduction state, the output end and the negative electrode of the electronic switch circuit are cut off, the LED light-emitting circuit does not emit light, after the cut-off between the output end and the negative electrode of the electronic switch circuit, the output high voltage between the first output end and the second output end of the electronic ballast circuit is rapidly increased, and when the voltage between the first output end, and then the voltage output between the first output end and the second output end of the electronic ballast circuit is reduced to the steady-state working voltage of the mercury ultraviolet lamp tube, at the moment, constant current is output between the first output end and the second output end of the electronic ballast circuit, the mercury ultraviolet lamp tube is driven by the constant current to emit ultraviolet rays, the integrated lamp is in an ultraviolet sterilization state, when the timing reaches the ultraviolet sterilization time, the control end of the pulse control circuit starts to output the voltage and the current, so that the voltage and the current are stopped to be output between the first output end and the second output end of the electronic ballast circuit, at the moment, the LED light-emitting module does not emit light, and the mercury ultraviolet lamp tube does not emit ultraviolet rays until the integrated lamp circuit is powered off.

As shown in fig. 2, in this embodiment, the pulse control circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first capacitor C1, a second capacitor C2, a first diode D1, a second diode D2, a first integrated circuit chip U1, an optocoupler U2, a buzzer LS, and a first MOS transistor M1, the first diode D1 is a voltage regulator, the second diode D2 is a rectifier diode, a reference model of the optocoupler U2 is PC817, the first integrated circuit chip U1 is a single chip, and has a positive electrode, a negative electrode, a digital input end, and three digital output ends, the three digital output ends are respectively a first output end, a second output end, and a third output end, one end of the first resistor R1 is the positive electrode of the pulse control circuit, the other end of the first resistor R1, the negative electrode of the first diode D1, and one end 1 of the first capacitor C2, The positive pole of the buzzer LS is connected with the positive pole of the singlechip chip, one end of a second resistor R2 is a detection end of the pulse control circuit, the other end of a second resistor R2 is connected with one end of a third resistor R3, the other end of the third resistor R3, one end of a fourth resistor R4 and one end of a second capacitor C2 are connected with the digital input end of the singlechip chip, the first output end of the singlechip chip is connected with one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected with the positive pole of a second diode D2, the negative pole of the second diode D2 is a control end of the pulse control circuit, the second output end of the singlechip chip is connected with the grid of a first MOS tube M1, the drain of the first MOS tube M1 is connected with the negative pole of the buzzer, the third output end of the singlechip chip is connected with one end of a sixth resistor R6, the other end of the sixth resistor R6 is connected with the positive pole of the input side of the optical coupler U2, the collector of the output side of the optical coupler U2 is the positive output end of the pulse control circuit, the emitter of the output side of the optical coupler U2 is the negative output end of the pulse control circuit, the negative pole of the single chip microcomputer chip, the other end of the fourth resistor R4, the other end of the first capacitor C1, the other end of the second capacitor C2, the positive pole of the first diode D1, the negative pole of the input side of the optical coupler U2 and the source of the first MOS tube M1 are connected, and the connecting end of the negative pole is the negative pole of the pulse control circuit. The pulse control circuit utilizes a single chip microcomputer chip to time and detect pulse signals which are switched into commercial power and are switched off and then closed temporarily, adopts the current mature single chip microcomputer program to set control level signals of all ports of each pulse control circuit, and controls a buzzer LS to give out warning sound when entering an ultraviolet sterilization control state.

As shown in fig. 2, in this embodiment, the electronic switch circuit includes a seventh resistor R7, an eighth resistor R8, a third capacitor C3, a fourth capacitor C4, a third diode D3 and a second MOS transistor M2, the third diode D3 is a zener diode, one end of the seventh resistor R7 is connected to one end of the fourth capacitor C4, a connection end of the seventh resistor R7 is connected to one end of the eighth resistor R8, the other end of the eighth resistor R8, one end of the third capacitor C3, a negative electrode of the third diode D3 and a gate of the second MOS transistor M2 are connected, a drain of the second MOS transistor M2 is an output end of the electronic switch circuit, the other end of the third capacitor C3, a negative electrode of the third diode D3, a source of the second MOS transistor M2 and the other end of the fourth capacitor C4, and a connection end of the electronic switch circuit is a negative electrode of the electronic switch circuit.

As shown in fig. 2, in the present embodiment, the high-frequency rectification circuit includes a fourth diode D4, a fifth diode D5, a sixth diode D6 and a seventh diode D7, the fourth diode D4, the fifth diode D5, the sixth diode D6 and the seventh diode D7 are all high-frequency high-voltage rectification diodes, an anode of the fourth diode D4 is connected to a cathode of the seventh diode D7 and a connection end thereof is the second ac input end of the high-frequency rectification circuit, an anode of the fifth diode D5 is connected to a cathode of the sixth diode D6 and a connection end thereof is the first ac input end of the high-frequency rectification circuit, a cathode of the fourth diode D4 is connected to a cathode of the fifth diode D5 and a connection end thereof is the output anode of the high-frequency rectification circuit, and an anode of the sixth diode D6 is connected to an anode of the seventh diode D7 and a connection end thereof is the output cathode of the high-frequency rectification circuit.

As shown in fig. 2, in this embodiment, the electronic ballast circuit is implemented by a mature technical solution, and its partial circuits include a first triode D1, a second triode D2, a third triode D3, a pulse transformer, an inductor, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, an eighth diode D8, an LED, a diac DB1 and a first thyristor J1, the fifth capacitor C5 is an electrolytic capacitor, the eighth diode D8 is a rectifier diode, the pulse transformer has a primary coil and two auxiliary coils, the inductor has a triode D1 and an auxiliary coil, a collector of the first triode D1, a terminal of the eighth capacitor C8 and a positive electrode of the LED are connected to a light emitting diode, an emitting electrode of the first triode D1 is connected with one end of a fifteenth resistor R15, the other end of the fifteenth resistor R15, a collector of the second triode D2 is connected with one end of a primary coil T-Np of the pulse transformer, an emitting electrode of the second triode D2 is connected with one end of a sixteenth resistor R16, the other end of the primary coil T-Np of the pulse transformer is connected with one end of a primary coil L-Np of an inductor, the other end of the primary coil L-Np of the inductor is a first output end of the electronic ballast circuit, the other end of an eighth capacitor C8 is connected with one end of a ninth capacitor C9, a connecting end of the eighth capacitor C9 is a second output end of the electronic ballast circuit, one end of an auxiliary coil L-Na of the inductor is connected with an anode of an eighth diode D8, a cathode of an eighth diode D8, an anode of a fifth capacitor C5, one end of a ninth resistor R9 is connected with one end of the tenth resistor R10, and a connecting end of the eighth, the other end of the tenth resistor R10 is connected with one end of the diac DB1, the other end of the diac DB1, one end of the sixth capacitor C6, one end of the eleventh resistor R11 and the gate of the first thyristor J1 are connected, the connection end is the control end of the electronic ballast circuit, the cathode of the first thyristor J1, one end of the fourteenth resistor R14 and one end of the seventh capacitor C7 are connected with the base of the third triode D3, the anode of the first thyristor J1 and the other end of the seventh capacitor C7 are connected with one end of the thirteenth resistor R13, the other end of the thirteenth resistor R13 and one end of the twelfth resistor R12, the other end of the twelfth resistor R12 and the cathode of the LED, the other end of the auxiliary coil L-Na of the inductor, the cathode of the fifth capacitor C5, the other end of the sixth capacitor C6, the other end of the ninth resistor R9 and the other end of the eleventh resistor R11, The other end of the fourteenth resistor R14, the other end of the sixteenth resistor R16, the emitter of the third triode D3 and the other end of the ninth capacitor C9 are connected, and the connection end thereof is the negative electrode of the electronic ballast circuit, and two ends of each of the two auxiliary coils of the pulse transformer are respectively connected with other parts of the electronic ballast circuit. The electronic ballast circuit has the advantages of open circuit output protection function, reliable performance and low cost, the pulse control circuit triggers the electronic ballast circuit to enter the protection function by utilizing the open circuit protection function of the electronic ballast circuit through the control end of the pulse control circuit, so that the electronic ballast circuit stops power conversion, and the circuit is internally provided with the LED which is used as an indicator lamp to emit light when the electronic ballast circuit is in the protection state.

In this embodiment, the LED lighting module is formed by connecting n LED luminaries in series-parallel manner by using a conventional technology, the mercury ultraviolet lamp tube is a mercury ultraviolet lamp tube with a fluorescent lamp structure, an ac voltage input end at one end of the mercury ultraviolet lamp tube is a first input end of the mercury ultraviolet lamp tube, and an ac voltage input end at the other end of the mercury ultraviolet lamp tube is a second input end of the mercury ultraviolet lamp tube.

Claims (4)

1. An ultraviolet sterilization and LED illumination integrated lamp circuit with a timing sterilization function is characterized by comprising an electronic ballast circuit, a mercury ultraviolet lamp tube, a high-frequency rectification circuit, an LED light-emitting module, a pulse control circuit and an electronic switch circuit, wherein the electronic ballast circuit is an electronic ballast circuit with an open-circuit protection function and is provided with a live wire input end, a zero line input end, a first output end, a second output end, a control end, a direct-current voltage output end and a negative electrode, the mercury ultraviolet lamp tube is provided with a first input end and a second input end, the high-frequency rectification circuit is provided with a first alternating-current input end, a second alternating-current input end, an output positive electrode and an output negative electrode, the LED light-emitting module is provided with a positive electrode and a negative electrode, and the working voltage of the LED light-emitting module is smaller than the working voltage of the mercury ultraviolet lamp tube, the electronic switch circuit is provided with an anode, a cathode, an output end and a control end, the pulse control circuit is provided with a detection end, an anode, a cathode, a positive output end, a negative output end and a control end, a live wire access end of the electronic ballast circuit is used as a live wire access end of the integrated lamp circuit, a zero line input end of the electronic ballast circuit is used as a zero line access end of the integrated lamp circuit, a first output end of the electronic ballast circuit is connected with a first input end of the mercury ultraviolet lamp tube, a second output end of the electronic ballast circuit is connected with a second input end of the mercury ultraviolet lamp tube, a first alternating current input end of the high-frequency rectifying circuit is connected with a first output end of the electronic ballast circuit, a second alternating current input end of the high-frequency rectifying circuit is connected with a second output end of the electronic ballast circuit, the output positive pole of the high-frequency rectification circuit is respectively connected with the positive pole of the electronic switch circuit and the positive pole of the LED light-emitting module, the output negative pole of the high-frequency rectification circuit is connected with the negative pole of the electronic switch circuit, the negative pole of the LED light-emitting module is connected with the output end of the electronic switch circuit, the detection end of the pulse control circuit is connected with the live wire input end or the zero line input end of the electronic ballast circuit, the positive pole of the pulse control circuit is connected with the direct current voltage output end of the electronic ballast circuit, the control end of the pulse control circuit is connected with the control end of the electronic ballast circuit, the positive output end of the pulse control circuit is connected with the control end of the electronic switch circuit, and the negative output end of the pulse control circuit is connected with the negative pole of the electronic switch circuit, the negative electrode of the pulse control circuit is connected with the negative electrode of the electronic ballast circuit;

the pulse control circuit has two control states, namely an LED illumination control state and an ultraviolet sterilization control state, the pulse control circuit is preset with delay time and ultraviolet sterilization time, after the pulse control circuit is electrified, a detection end of the pulse control circuit is switched to the other control state from the current control state every time the pulse control circuit receives a voltage pulse signal, the voltage pulse signal can be generated by carrying out short-time disconnection and then closing operation on an external control switch connected with the integrated lamp circuit and a mains supply, the default state after the pulse control circuit is electrified is the LED illumination control state, when the pulse control circuit is in the LED illumination control state, the control end of the pulse control circuit is in a cut-off state without outputting voltage and current, a cut-off state is arranged between a positive output end and a negative output end of the pulse control circuit, and when the control end of the pulse control circuit is in the cut-off state, the electronic ballast circuit keeps working, when the positive output end and the negative output end of the pulse control circuit are in a cut-off state, the output end and the negative electrode of the electronic switch circuit are connected, and when the positive output end and the negative output end of the pulse control circuit are in a connected state, the output end and the negative electrode of the electronic switch circuit are cut off;

when the external control switch is closed, the integrated lamp circuit is connected to a mains supply, the pulse control circuit is in an LED illumination control state, the electronic ballast circuit starts to work, the electronic ballast circuit converts an alternating-current voltage of the connected mains supply into a high-frequency alternating-current voltage to be output between a first output end and a second output end of the electronic ballast circuit, and simultaneously outputs a direct-current voltage at a direct-current voltage output end of the electronic ballast circuit, the high-frequency rectifying circuit is connected to the high-frequency alternating-current voltage to output a direct-current voltage between an output anode and an output cathode of the electronic ballast circuit, the output end and the cathode of the electronic ballast circuit are conducted at the moment, the LED light-emitting module is in a light-emitting state, the mercury ultraviolet lamp tube cannot emit ultraviolet rays, and the integrated lamp circuit is; at the moment, if the external control switch is operated once after being turned off and then turned on, the detection end of the pulse control circuit receives a voltage pulse signal and enters an ultraviolet sterilization control state, the control end of the pulse control circuit is kept in a cut-off state, the positive output end and the negative output end of the pulse control circuit are also kept in a cut-off state, the pulse control circuit starts to delay timing, when the timing reaches the delay time, the pulse control circuit enters sterilization timing, the control end of the pulse control circuit keeps the cut-off state unchanged, the positive output end and the negative output end of the pulse control circuit are in a conducting state, the output end and the negative electrode of the electronic switch circuit are cut off, the LED light-emitting circuit does not emit light, the mercury lamp tube emits ultraviolet light, the integrated lamp is in an ultraviolet sterilization state, and when the timing reaches the ultraviolet sterilization time, the control end of the pulse control circuit starts to output voltage and current, and the voltage and the current are stopped to be output between the first output end and the second output end of the electronic ballast circuit, the LED light-emitting module does not emit light at the moment, and the mercury ultraviolet lamp tube does not emit ultraviolet rays until the integrated lamp circuit is powered off.

2. The ultraviolet sterilization and LED illumination integrated lamp circuit with the timed sterilization function according to claim 1, characterized in that the pulse control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a first diode, a second diode, a first integrated circuit chip, an optical coupler, a buzzer and a first MOS (metal oxide semiconductor) transistor, wherein the first diode is a voltage regulator, the second diode is a rectifier diode, the reference model of the optical coupler is PC817, the first integrated circuit chip is a single chip microcomputer chip and has a positive electrode, a negative electrode, a digital input end and three digital output ends, the three digital output ends are respectively a first output end, a second output end and a third output end, one end of the first resistor is the positive electrode of the pulse control circuit, the other end of the first resistor, the cathode of the first diode, one end of the first capacitor, the anode of the buzzer and the anode of the singlechip chip are connected, one end of the second resistor is the detection end of the pulse control circuit, the other end of the second resistor is connected with one end of the third resistor, the other end of the third resistor, one end of the fourth resistor and one end of the second capacitor are connected with the digital input end of the singlechip chip, the first output end of the singlechip chip is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with the anode of the second diode, the cathode of the second diode is the control end of the pulse control circuit, the second output end of the singlechip chip is connected with the grid electrode of the first MOS tube, the drain electrode of first MOS pipe with the negative pole of bee calling organ connect, the third output of singlechip chip with the one end of sixth resistance connect, the other end of sixth resistance with the positive pole of opto-coupler input side connect, the collector electrode of opto-coupler output side do pulse control circuit's positive output, the transmission of opto-coupler output side extremely pulse control circuit's negative output, the negative pole of singlechip chip, the other end of fourth resistance the other end of first electric capacity the other end of second electric capacity the positive pole of first diode, the negative pole of opto-coupler input side and the source electrode of first MOS pipe connect its link and be pulse control circuit's negative pole.

3. The circuit of claim 1, wherein the electronic switch circuit comprises a seventh resistor, an eighth resistor, a third capacitor, a fourth capacitor, a third diode and a second MOS transistor, the third diode is a zener diode, one end of the seventh resistor is connected to one end of the fourth capacitor, and the connection end thereof is the positive electrode of the electronic switch circuit, the other end of the seventh resistor is connected to one end of the eighth resistor, the other end of the eighth resistor, one end of the third capacitor, the negative electrode of the third diode and the gate electrode of the second MOS transistor are connected, the drain electrode of the second MOS transistor is the output end of the electronic switch circuit, the other end of the third capacitor, the negative electrode of the third diode, the gate electrode of the second MOS transistor, the first resistor, the second resistor, the third resistor, the fourth resistor, the first capacitor, the second capacitor, the third diode, the fourth diode, And the source electrode of the second MOS tube is connected with the other end of the fourth capacitor, and the connecting end of the second MOS tube is the cathode of the electronic switch circuit.

4. The ultraviolet sterilization and LED illumination integrated lamp circuit with the timed sterilization function according to claim 1, characterized in that the high-frequency rectification circuit comprises a fourth diode, a fifth diode, a sixth diode and a seventh diode, wherein the fourth diode, the fifth diode, the sixth diode and the seventh diode are all high-frequency high-voltage rectification diodes, the anode of the fourth diode is connected with the cathode of the seventh diode and the connection end thereof is the second AC input end of the high-frequency rectification circuit, the anode of the fifth diode is connected with the cathode of the sixth diode and the connection end thereof is the first AC input end of the high-frequency rectification circuit, the cathode of the fourth diode is connected with the cathode of the fifth diode and the connection end thereof is the output anode of the high-frequency rectification circuit, the anode of the sixth diode is connected with the anode of the seventh diode, and the connecting end of the sixth diode is the output cathode of the high-frequency rectifying circuit.

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