CN215523212U

CN215523212U - Infrared induction down lamp

Info

Publication number: CN215523212U
Application number: CN202121291033.8U
Authority: CN
Inventors: 朱健荣
Original assignee: Taizhou Jiaoguang Lighting Co ltd
Current assignee: Taizhou Jiaoguang Lighting Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-14
Anticipated expiration: 2031-06-09

Abstract

The utility model provides an infrared induction down lamp, belongs to the technical field of lighting lamps, and solves the problem of improving the use convenience of the down lamp.

Description

Infrared induction down lamp

Technical Field

The utility model relates to the technical field of lighting lamps, in particular to an infrared induction down lamp.

Background

The down lamp is a lamp with a screw lamp holder, can be directly provided with an incandescent lamp or an LED lamp, and is commonly used in hotels, families and coffee houses.

LED lamps are replacing incandescent lamps due to their advantages such as environmental protection and long life, and LED lamps used in hotels, homes, coffee shops, etc. are generally controlled by switches, and therefore, they may be kept on even if nobody is present.

In order to reduce the consumption of electric energy, some people propose that an LED lamp time delay function can be additionally arranged on the down lamp, so that the LED lamp can be automatically turned off after being turned on for a period of time, and the loss of electric energy is reduced.

The above-mentioned switch control that still uses leads to people to want to light down lamp and must find the switch of down lamp earlier, then presses the switch and just can see the environment on every side clearly, very inconvenient.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides an infrared induction down lamp, which solves the technical problem of how to improve the convenience of the down lamp.

The utility model is realized by the following technical scheme: the utility model provides an infrared induction down lamp, includes the LED banks, its characterized in that, infrared induction down lamp still includes power supply circuit, switch circuit, drive circuit and is used for the infrared induction module that can real-time detection human signal, power supply circuit, switch circuit, drive circuit and LED banks establish ties in proper order and form the return circuit, infrared induction module is connected with power supply circuit and switch circuit respectively, infrared induction module switches on switch circuit when detecting human signal, the LED banks lights when switch circuit switches on, drive circuit adjusts LED banks power when the LED banks lights.

The infrared induction module detects whether a human body signal exists in real time, when the human body signal exists, the infrared induction module conducts the switch circuit, the LED lamp bank is lightened when the switch circuit is conducted, the drive circuit regulates the power of the LED lamp bank, when the human body signal does not exist, the infrared induction module stops the switch circuit, and when the switch circuit is stopped, the LED lamp bank is extinguished. The maintenance cost of the LED lamp set is reduced, so that the use convenience of the LED lamp set is improved, the influence of the environment on the circuit is reduced, the frequent debugging is avoided, the use convenience of the LED lamp set is improved, the automatic lighting function of the LED lamp set is realized by the cooperation of the three circuits, the LED lamp set can be lighted without searching for a switch, and the use convenience of the LED lamp set is improved.

In the above infrared induction down lamp, the driving circuit includes a resistor R8, a resistor R12, a resistor R13, a resistor R14, a diode D1, a transient suppression diode TVS and a driving chip U3, the cathode of the diode D1 is respectively connected with one end of a capacitor C2, one end of a resistor R12 and one end of an LED lamp group, the other ends of a capacitor C2 and a resistor R12 are respectively connected with the cathode of the transient suppression diode TVS, the anode of the transient suppression diode TVS is connected with the switching circuit, the pin 1, the pin 3 and the pin 9 of the driving chip U3 are all grounded, the pin 2 of the driving chip U3 is connected with one end of a resistor R13, the pin 4 of the driving chip U3 is connected with one end of a resistor R14, the pin 5, the pin 6 and the pin 7 of the driving chip U3 are all connected with the other end of the LED lamp group, the pin 8 of the driving chip U3 is connected with the other end of a resistor R13 and the other end of a resistor R14 are connected with one end of a resistor 8, the other end of the resistor R8 is connected with the switch circuit, the driving chip U3 is used for obtaining LED power and adjusting the LED power, and the driving chip U3 enables the current of the driving circuit to be kept constant, so that the running power of the LED lamp bank is kept, and the accuracy of adjusting the power of the LED lamp bank is improved.

In above-mentioned infrared induction down lamp, drive circuit still includes driver chip U4, resistance R15 and resistance R16, driver chip U4's pin 1, pin 3 and pin 9 all ground connection, driver chip U4's pin 2 is connected with resistance R15 one end, driver chip U4's pin 4 is connected with resistance R16 one end, driver chip U4's pin 6 air-connects, driver chip U4's pin 5, pin 7 and pin 8 all are connected with the LED banks other end, and driver chip U4 is used for obtaining LED power and adjusts LED power, the resistance R15 other end and the resistance R16 other end all are connected with resistance R8 one end, and driver chip U4 still makes the drive circuit electric current keep invariable to keep the operating power of LED banks, improve the accuracy of LED banks power regulation.

In the infrared induction tube light, the driving circuit further includes a driving chip U2, a resistor R10, a resistor R11, a diode D2 and a diode D3, the pin 1 of the driving chip U2 is respectively connected with the resistor R8, the negative pole of the diode D3 and the switch circuit, the pin 9 of the driving chip U2 is respectively connected with the negative pole of the resistor R8, the negative pole of the diode D3 and the switch circuit, the pin 2 of the driving chip U2 is connected with one end of the resistor R9, the other end of the resistor R9 is respectively connected with the other end of the resistor R8 and the positive pole of the diode D2, the negative pole of the diode D2 is connected with the positive pole of the diode D3, the pin 3, the pin 4, the pin 5 and the pin 6 of the driving chip U2 are all idle, the pin 7 of the driving chip U2 is respectively connected with one end of the resistor R10 and one end of the resistor R11, the pin 8 of the driving chip U2 is respectively connected with one end of the resistor R10 and one end of the resistor R11, the resistance R10 other end is connected with power supply circuit and diode D1 anodal respectively, the resistance R11 other end is connected with power supply circuit and diode D1 anodal respectively, and driver chip U2 is used for providing the holding current to the dimmer when the external dimmer of infrared induction down lamp.

In above-mentioned infrared induction down lamp, infrared induction module includes infrared inductor circuit and voltage stabilizing circuit, voltage stabilizing circuit is connected with infrared inductor circuit and power supply circuit respectively, infrared inductor circuit still is connected with switch circuit, and voltage stabilizing circuit can provide stable voltage input for infrared inductor circuit, and infrared inductor circuit can judge whether there is human body signal to exist and switch circuit switches on or ends according to human body signal control, improves the accuracy that LED banks lighted, reduces the consumption of the energy.

In the above infrared induction down lamp, the infrared inductor circuit includes a capacitor C4, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a motion sensor PIR, and an infrared induction chip U1, a pin 1 of the infrared induction chip U1 is connected to the voltage regulator circuit, the D stage of the motion sensor PIR, one end of the resistor R4, and one end of the resistor R2, a pin 2 of the infrared induction chip U1 is connected to one end of the resistor R1, one end of the capacitor C4, and the S stage of the motion sensor PIR, a pin 3 and a pin 8 of the infrared induction chip are both connected in the air, a pin 4 of the infrared induction chip U1 is connected to one end of the resistor R3 and the other end of the resistor R2, a pin 6 of the infrared induction chip U1 is connected to the other end of the resistor R4 and one end of the resistor R5, a pin 7 of the infrared induction chip U1 is connected to one end of the resistor R6, the other end of the resistor R6 is connected with a switch circuit, a pin 5 of the infrared sensing chip U1, the other end of the resistor R1, the other end of the resistor R3, the other end of the resistor R5, the other end of the capacitor C4 and a G level of the motion sensor PIR are all grounded, the voltage stabilizing circuit outputs current to the motion sensor PIR and the infrared sensing chip U1, the motion sensor PIR receives the current and keeps running, the infrared sensing chip U1 receives the current and starts working, the motion sensor PIR outputs a high-level signal to the infrared sensing chip U1 when a human body signal exists, the motion sensor PIR outputs a low-level signal to the infrared sensing chip U1 when no human body signal exists, the infrared sensing chip U1 is used for outputting to the switch circuit after receiving the signal output by the motion sensor, and the lighting accuracy of the LED lamp bank is improved.

In above-mentioned infrared induction down lamp, voltage stabilizing circuit includes electric capacity C1, electric capacity C2, electric capacity C3, stabiliser LD0, electric capacity C1 one end ground connection, the electric capacity C1 other end is connected with power supply circuit and stabiliser LD 0's pin 3 respectively, stabiliser LD 0's pin 1 ground connection, stabiliser LD 0's pin 2 is connected with electric capacity C2 one end, electric capacity C3 one end, motion sensor PIR's D level and infrared induction chip U1's pin 1 respectively, electric capacity C2 other end and electric capacity C3 other end are all grounded, stabiliser LD0 can provide stable voltage to motion sensor PIR and infrared induction chip U1, have guaranteed the stability of circuit operation.

In above-mentioned infrared induction down lamp, switch circuit includes resistance R7 and MOS pipe Q1, MOS pipe Q1's grid is connected with resistance R7 one end and resistance R6 other end, MOS pipe Q1's source electrode is connected with the resistance R7 other end, power supply circuit and transient suppression diode TVS positive pole respectively, MOS pipe Q1's drain-type is connected with resistance R8 one end, and MOS pipe Q1 switches on when the gate of MOS pipe Q1 receives the high level signal of infrared induction chip U1 output, and whole circuit forms the return circuit, and the LED banks is lighted, and MOS pipe Q1 cuts off when the gate of MOS pipe Q1 receives the low level signal of infrared induction chip U1 output, and the LED banks extinguishes, and switch circuit can be accurate according to the signal that receives make the circuit switch on or cut off, improves the accuracy that the LED banks was lighted.

In the above infrared induction tube lamp, the power circuit includes a zero line port L, a fire line port N, a fuse RF1, a varistor MOV1, a varistor MOV2, a rectifier bridge DB1, a capacitor C5, a capacitor C6, a resistor R17, a resistor R18, and a zener diode DW1, the fire line port L is connected to one end of the fuse RF1, the other end of the fuse RF1 is connected to pin 1 of the rectifier bridge DB1 and one end of the varistor MOV1, the other end of the varistor MOV1 is connected to the zero line port N and pin 2 of the rectifier bridge DB1, pin 4 of the rectifier bridge DB1 is grounded, pin 3 of the rectifier bridge DB1 is connected to one end of the varistor MOV1, one end of the capacitor C1, one end of the resistor R1, one end of the varistor MOV1, one end of the resistor R1, the other end of the varistor C1, the capacitor C1, the other end of the varistor R1, the capacitor C1, the other end of the varistor R1, and the other end of the capacitor DW1, the positive electrode of the voltage stabilizing diode DW1 is connected with the source electrode of the MOS tube Q1, the other end of the resistor R18 is connected with the other end of the capacitor C1 and one end of the capacitor C6 respectively, the other end of the capacitor C6 is connected with the pin GND and the source electrode of the MOS tube Q1 respectively, alternating current is input from a fire wire port L and then is output to the voltage stabilizing circuit and the driving circuit through the rectifying bridge respectively, and the power supply circuit rectifies, filters and limits the current of the input current, so that each circuit can receive the current to normally operate.

Compared with the prior art, this infrared induction down lamp has following advantage:

1. the LED lamp bank can be automatically turned on when people exist, and automatically turned off when no people exist, so that the convenience of use is improved.

2. The utility model can adjust the power of the LED lamp group and reduce unnecessary electric energy consumption.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic diagram of the circuit structure of the present invention.

Fig. 3 is a schematic circuit diagram of an infrared sensing module in the circuit structure of the present invention.

FIG. 1, power supply circuit; 2. an infrared sensing module; 21. a voltage stabilizing circuit; 22. an infrared sensor circuit; 3. a switching circuit; 4. a drive circuit; 5. and an LED lamp group.

Detailed Description

In order to make the technical problems, technical solutions and advantages solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, the infrared induction down lamp comprises a power circuit 1, an infrared induction module 2, a switch circuit 3, a driving circuit 4 and an LED lamp set 5, wherein the infrared induction module 2 comprises a voltage stabilizing circuit 21 and an infrared inductor circuit 22, the power circuit 1, the switch circuit 3, the driving circuit 4 and the LED lamp set 5 are sequentially connected in series to form a loop, the voltage stabilizing circuit 21 is respectively connected with the power circuit 1 and the infrared inductor circuit 22, and the infrared inductor circuit 22 is connected with the switch circuit 3.

The power circuit 1 rectifies, filters and limits the input electric energy and outputs the electric energy to the voltage stabilizing circuit 21, the voltage stabilizing circuit 21 receives the electric energy and outputs the electric energy to the infrared inductor circuit 22 after voltage reduction, the infrared inductor circuit 22 operates, when the infrared sensor circuit 22 detects a human body signal, a high level signal is output to the switch circuit 3, when the switch circuit 3 receives the high level signal, the switch circuit 3 is turned on, when the switch circuit 3 is turned on, the LED lamp set 5 is lighted, when the LED lamp group 5 is lighted, the driving circuit 4 adjusts the power of the LED lamp group 5, the power of the LED lamp group 5 can be any value between 10 and 100W, in this embodiment, the power of the LED lamp set 5 is preferably 15W, and when the infrared sensor circuit 22 does not detect a human body signal, a low level signal is output to the switch circuit 3, the switch circuit 3 turns off the driving circuit 4 after receiving the low level signal, and when the driving circuit 4 is turned off, the LED lamp set 5 is turned off.

The utility model improves the infrared induction down lamp by the cooperation of the infrared induction module 2, the switch circuit 3 and the drive circuit 4, the infrared induction module 2 can accurately detect whether human body signals exist and control the on or off of the switch circuit 3, so that the LED lamp group 5 can be lightened when the human body signals exist, the LED lamp group can be extinguished when no human body signals exist, the drive circuit 4 can adjust the power of the LED lamp group 5, the loop current is kept constant, the current is prevented from being overlarge to reduce the service life of each component in the circuit, the LED lamp part is lightened or the brightness does not reach the standard when the current is too small is prevented, the maintenance cost of the utility model is reduced, the convenience of the utility model is improved, the influence of the environment on the circuit is also reduced, the frequent debugging is avoided, the convenience of the utility model is improved, the automatic lightening function of the LED lamp group 5 is realized by the cooperation of the three circuits, the LED lamp group 5 can be lightened without searching for the switch, thereby improving the convenience of use of the utility model.

As shown in fig. 2 and fig. 3, the power circuit 1 includes a zero line port L, a fire line port N, a fuse RF1, a varistor MOV1, a varistor MOV2, a rectifier bridge DB1, a capacitor C5, a capacitor C6, a resistor R17, a resistor R18, and a zener diode DW1, the fire line port L is connected to one end of the fuse RF1, the other end of the fuse RF1 is connected to pin 1 of the rectifier bridge DB1 and one end of the varistor MOV1, the other end of the varistor MOV1 is connected to the zero line port N and pin 2 of the rectifier bridge DB1, pin 4 of the rectifier bridge DB1 is grounded, pin 3 of the rectifier bridge DB1 is connected to one end of the varistor MOV2, one end of the capacitor C5, one end of the resistor R17, one end of the resistor R18, one end of the resistor R10, one end of the resistor R11 and one end of the diode D1 are connected to the positive pole, the other end of the varistor MOV2 is grounded, the capacitor C5 is connected to the negative pole V17 and the varistor 1, the anode of the voltage stabilizing diode DW1 is connected with a pin GND, the other end of the resistor R18 is connected with a pin V + and one end of the capacitor C6, and the other end of the capacitor C6 is connected with the pin GND and the source of the MOS transistor Q1.

Infrared induction module 2 includes voltage stabilizing circuit 21 and infrared inductor circuit 22, for convenient understanding, infrared induction module 2 is equipped with pin V +, pin OUT and pin GND, voltage stabilizing circuit 21 includes electric capacity C1, electric capacity C2, electric capacity C3, stabiliser LD0, electric capacity C1 one end ground connection, the electric capacity C1 other end is connected with pin V + and stabiliser LD 0's pin 3 respectively, stabiliser LD 0's pin 1 ground connection, stabiliser LD 0's pin 2 respectively with electric capacity C2 one end, electric capacity C3 one end, motion sensor PIR's D level and infrared induction chip U1's pin 1 are connected, the electric capacity C2 other end and the equal ground connection of electric capacity C3 other end.

The infrared sensor circuit 22 comprises a capacitor C4, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a motion sensor PIR and an infrared sensing chip U1, wherein a pin 1 of the infrared sensing chip U1 is respectively connected with a voltage stabilizing circuit 21, a D-stage of the motion sensor PIR, one end of a resistor R4 and one end of a resistor R2, a pin 2 of the infrared sensing chip U1 is respectively connected with one end of the resistor R1, one end of a capacitor C4 and an S-stage of the motion sensor PIR, a pin 3 and a pin 8 of the infrared sensing chip are both connected in an air-to-air mode, a pin 4 of the infrared sensing chip U1 is respectively connected with one end of a resistor R3 and the other end of a resistor R2, a pin 6 of the infrared sensing chip U1 is respectively connected with the other end of the resistor R4 and one end of a resistor R5, a pin 7 of the infrared sensing chip U1 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with the switch circuit 3 through a pin OUT, the pin 5 of the infrared sensing chip U1, the other end of the resistor R1, the other end of the resistor R3, the other end of the resistor R5, the other end of the capacitor C4, and the G-level of the motion sensor PIR are all grounded, in this embodiment, the pin 4 of the infrared sensing chip is a delay pin, and when the LED lamp set is turned on, the LED lamp set is turned off according to a preset delay time set by the delay pin, where the preset delay time may be any one of 5-30 minutes, and in this embodiment, is preferably 10 minutes.

The switch circuit 3 comprises a resistor R7 and a MOS transistor Q1, the gate of the MOS transistor Q1 is connected with one end of the resistor R7 and the pin OUT, the source of the MOS transistor Q1 is connected with the other end of the resistor R7, the power supply circuit 1 and the positive electrode of the transient suppression diode TVS, and the drain of the MOS transistor Q1 is connected with one end of the resistor R8.

The driving circuit 4 comprises a resistor R8, a resistor R9, a resistor R10, a resistor R11, a diode D11, a transient suppression diode TVS, a driving chip U11 and a driving chip U11, wherein a pin 1 of the driving chip U11 is respectively connected with the resistor R11, a cathode of the diode D11 and a switch circuit, a pin 9 of the driving chip U11 is respectively connected with the resistor R11, the cathode of the diode D11 and the switch circuit, a pin 2 of the driving chip U11 is connected with one end of the resistor R11, the other end of the resistor R11 is respectively connected with the anode of the diode D11, the cathode of the diode D11 is connected with the anode of the diode D11, a pin 3, a pin 4, a pin 5 and a pin 6 of the driving chip U11 are all connected with the empty pin, and one end of the resistor R11, pin 7 of the driving chip U2 is connected to one end of a resistor R10 and one end of a resistor R11, the other end of the resistor R10 is connected to the positive electrodes of the power circuit 1 and the diode D1, the other end of the resistor R11 is connected to the positive electrodes of the power circuit 1 and the diode D1, the negative electrode of the diode D1 is connected to one end of a capacitor C2, one end of a resistor R12 and one end of an LED lamp group 5, the other end of the capacitor C2 and the other end of the resistor R12 are connected to the negative electrode of a transient suppression diode TVS, the positive electrode of the transient suppression diode TVS is connected to a switch circuit, pin 1, pin 3 and pin 9 of the driving chip U3 are all grounded, pin 2 of the driving chip U3 is connected to one end of a resistor R13, pin 4 of the driving chip U3 is connected to one end of a resistor R14, pin 5, pin 6 and pin 7 of the driving chip U3 are connected to the other end of the LED lamp group 5, pin 8 of the driving chip U3 is connected to an empty, and pin 1 of the driving chip 4 is connected to the other end of the driving chip U3, Pin 3 and pin 9 all ground connection, pin 2 and the resistance R15 one end of drive chip U4 are connected, pin 4 and the resistance R16 one end of drive chip U4 are connected, pin 6 of drive chip U4 connects in the air, pin 5, pin 7 and pin 8 of drive chip U4 all are connected with the LED banks 5 other end, the resistance R13 other end, the resistance R14 other end, the resistance R15 other end and the resistance R16 other end all ground connection.

After the 120V alternating current is connected, the current flows to a pin 1 of a rectifier bridge DB1 through a fire wire port L, the rectifier bridge DB1 receives the current and outputs the current to a capacitor C5 through a pin 3, the capacitor C5 rectifies and filters the current, the current passes through a resistor R17 and a resistor R18 for current limiting, the current passes through a 5.1V voltage stabilizing diode DW1 and outputs the current to a voltage stabilizing circuit 21 through a pin V +, the voltage stabilizing circuit 21 receives the current and filters the current through a capacitor C1 and outputs the current to a pin 3 of a voltage stabilizer LD0, the voltage stabilizer LD0 receives the current and then reduces the current to 2.5V and outputs the current through a pin 2, the current is rectified and filtered through a capacitor C2 and a capacitor C3 and then respectively outputs the current to a D level of a motion sensor PIR and a pin 1 of an infrared sensing chip U1, and the motion sensor PIR and the infrared sensing chip U1 receive the current and then work.

When the motion sensor PIR detects a human body signal, the motion sensor PIR outputs a high level signal through an S stage, the high level signal is rectified and filtered by a capacitor C4 and then output to a pin 2 of an infrared sensing chip U1, the infrared sensing chip U1 receives the high level signal and then outputs to an infrared sensor circuit 22 and outputs to a pin OUT through a pin 7 after passing through a resistor R6, the pin OUT outputs current to a grid electrode of an MOS tube Q1, the MOS tube Q1 is conducted, when the MOS tube Q1 is conducted, the current of the power circuit 1 is rectified by a diode D1, filtered by a capacitor C2 and limited by an R12 and then output to an LED lamp group 5, the current of the LED lamp group 5 is output to a driving chip U3 or a driving chip U4, the current output by the driving chip U3 sequentially passes through R13 or R14, R8 and the MOS tube Q1 to form a loop to the power circuit 1, the LED lamp group 5 is lightened, the current output by the driving chip U4 sequentially passes through R15 or R8, the MOS tube Q5 and the power circuit 5731 to form a loop, the LED lamp group 5 is lit.

When the motion sensor PIR cannot detect a human body signal, the motion sensor PIR outputs a low level signal through an S level, the low level signal is rectified and filtered through a capacitor C4 and then output to a pin 2 of an infrared sensing chip U1, the infrared sensing chip U1 receives the low level signal and then outputs the low level signal to a pin OUT, the pin OUT does not output current to a grid electrode of an MOS tube Q1, the MOS tube Q1 is cut off, and the LED lamp group 5 is turned off.

In this embodiment, the capacitor with "+" sign is an electrolytic capacitor, the side with "+" sign is a positive electrode, and is generally connected with voltage, and the other section is a negative electrode, generally connected with ground, and mainly used for stabilizing voltage.

In the present embodiment, the driving chip U1 is SW06AT, the driving chip U2 is RM9003B, and the driving chip U3 and the driving chip U4 are RM 9005E.

When the dimmer is externally connected, the driver chip U2 is used to provide a holding current to the dimmer.

The motion sensor PIR comprises a PIR motion sensor, and outputs a high-level signal when detecting a human body signal, and outputs a low-level signal when not detecting the human body signal, which belong to the prior art.

The driving chip U2, the driving chip U3, and the driving chip U4 are conventional driving chips, and it is known in the art to adjust the power of the LED lamp set 5 and keep the current of the circuit constant.

In the present embodiment, the LED lamp group 5 includes 42 LED lamps from the LED1 to the LED42, and the number of the LED lamps may be increased or decreased according to the requirement to form the LED lamp group 5.

The specific embodiments described herein are merely illustrative of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides an infrared induction down lamp, includes LED banks (5), its characterized in that, infrared induction down lamp still includes power supply circuit (1), switch circuit (3), drive circuit (4) and is used for infrared induction module (2) that can real-time detection human signal, power supply circuit (1), switch circuit (3), drive circuit (4) and LED banks (5) establish ties in proper order and form the return circuit, infrared induction module (2) are connected with power supply circuit (1) and switch circuit (3) respectively, infrared induction module (2) switch on switch circuit (3) when detecting human signal, LED banks (5) light when switch circuit (3) switch on, drive circuit (4) adjust LED banks (5) power when LED banks (5) light.

2. The infrared induction down lamp as claimed in claim 1, wherein the driving circuit (4) comprises a resistor R8, a resistor R12, a resistor R13, a resistor R14, a diode D1, a transient suppression diode TVS and a driving chip U3, the cathode of the diode D1 is respectively connected with one end of a capacitor C2, one end of a resistor R12 and one end of the LED lamp set (5), the other end of the capacitor C2 and the other end of the resistor R12 are both connected with the cathode of the transient suppression diode TVS, the anode of the transient suppression diode TVS is connected with the switching circuit (3), the pin 1, the pin 3 and the pin 9 of the driving chip U3 are all grounded, the pin 2 of the driving chip U3 is connected with one end of the resistor R13, the pin 4 of the driving chip U3 is connected with one end of the resistor R14, the pin 5, the pin 6 and the pin 7 of the driving chip U3 are all connected with the other end of the LED lamp set (5), the pin 8 of the driving chip U3 is connected in an air-interface mode, the other ends of the resistor R13 and the resistor R14 are connected with one end of a resistor R8, and the other end of the resistor R8 is connected with the switch circuit (3).

3. The infrared induction down lamp according to claim 2, wherein the driving circuit (4) further comprises a driving chip U4, a resistor R15 and a resistor R16, the pin 1, the pin 3 and the pin 9 of the driving chip U4 are all grounded, the pin 2 of the driving chip U4 is connected with one end of a resistor R15, the pin 4 of the driving chip U4 is connected with one end of a resistor R16, the pin 6 of the driving chip U4 is connected in an air-connected mode, the pin 5, the pin 7 and the pin 8 of the driving chip U4 are all connected with the other end of the LED lamp set (5), and the other end of the resistor R15 and the other end of the resistor R16 are all connected with one end of a resistor R8.

4. The infrared induction down lamp according to claim 2 or 3, wherein the driving circuit (4) further comprises a driving chip U2, a resistor R10, a resistor R11, a diode D2 and a diode D3, a pin 1 of the driving chip U2 is respectively connected with a resistor R8, a diode D3 cathode and a switch circuit (3), a pin 9 of the driving chip U2 is respectively connected with a resistor R8, a diode D3 cathode and a switch circuit (3), a pin 2 of the driving chip U2 is connected with one end of the resistor R9, the other end of the resistor R9 is respectively connected with the other end of the resistor R8 and the anode of the diode D2, the cathode of the diode D2 is connected with the anode of the diode D3, a pin 3, a pin 4, a pin 5 and a pin 6 of the driving chip U2 are all idle, a pin 7 of the driving chip U2 is respectively connected with one end of a resistor R10 and one end of the resistor R11, pin 8 of driver chip U2 is connected with resistance R10 one end and resistance R11 one end respectively, the resistance R10 other end is connected with power supply circuit (1) and diode D1 positive pole respectively, the resistance R11 other end is connected with power supply circuit (1) and diode D1 positive pole respectively.

5. An infrared induction down lamp according to claim 4, characterized in that the infrared induction module (2) comprises an infrared inductor circuit (22) and a voltage stabilizing circuit (21), the voltage stabilizing circuit (21) is respectively connected with the infrared inductor circuit (22) and the power circuit (1), and the infrared inductor circuit (22) is further connected with the switch circuit (3).

6. An infrared induction down lamp as claimed in claim 5, wherein the infrared sensor circuit (22) comprises a capacitor C4, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a motion sensor PIR and an infrared induction chip U1, wherein a pin 1 of the infrared induction chip U1 is connected with a voltage regulator circuit (21), a D stage of the motion sensor PIR, one end of a resistor R4 and one end of a resistor R2, a pin 2 of the infrared induction chip U1 is connected with one end of the resistor R1, one end of a capacitor C4 and an S stage of the motion sensor PIR, a pin 3 and a pin 8 of the infrared induction chip U1 are connected with one end of a resistor R3 and the other end of a resistor R2, a pin 6 of the infrared induction chip U1 is connected with the other end of a resistor R4 and one end of a resistor R5, respectively, a pin 7 of the infrared induction chip U1 is connected with one end of a resistor R6, the other end of the resistor R6 is connected with the switch circuit (3), and the pin 5 of the infrared sensing chip U1, the other end of the resistor R1, the other end of the resistor R3, the other end of the resistor R5, the other end of the capacitor C4 and the G level of the motion sensor PIR are all grounded.

7. The infrared induction down lamp of claim 6, wherein the voltage stabilizing circuit (21) comprises a capacitor C1, a capacitor C2, a capacitor C3 and a voltage stabilizer LD0, one end of the capacitor C1 is grounded, the other end of the capacitor C1 is respectively connected with the power circuit (1) and a pin 3 of the voltage stabilizer LD0, a pin 1 of the voltage stabilizer LD0 is grounded, a pin 2 of the voltage stabilizer LD0 is respectively connected with one end of a capacitor C2, one end of a capacitor C3, a D-stage of the motion sensor PIR and a pin 1 of the infrared induction chip U1, and the other end of the capacitor C2 and the other end of the capacitor C3 are grounded.

8. An infrared induction down lamp as claimed in any one of claims 5 to 7, wherein said switching circuit (3) comprises a resistor R7 and a MOS transistor Q1, the gate of said MOS transistor Q1 is connected to one end of a resistor R7 and the other end of a resistor R6, the source of said MOS transistor Q1 is connected to the other end of a resistor R7, the power supply circuit (1) and the positive electrode of a transient suppression diode TVS, respectively, and the drain of said MOS transistor Q1 is connected to one end of a resistor R8.

9. An infrared induction tube lamp as set forth in claim 8, characterized in that the power supply circuit (1) comprises a neutral port L, a fire port N, a fuse RF1, a varistor MOV1, a varistor MOV2, a rectifier bridge DB1, a capacitor C5, a capacitor C6, a resistor R17, a resistor R18 and a zener diode DW1, the fire port L is connected with one end of the fuse RF1, the other end of the fuse RF1 is connected with a pin 1 of the rectifier bridge DB1 and one end of the varistor MOV1 respectively, the other end of the varistor MOV1 is connected with the neutral port N and a pin 2 of the rectifier bridge DB1 respectively, a pin 4 of the rectifier bridge DB1 is grounded, a pin 3 of the rectifier bridge DB 9 is connected with one end of the varistor MOV2, one end of the capacitor C5, one end of the resistor R17, one end of the resistor R18, one end of the resistor R10, one end of the resistor R36R 7 and a positive pole 68658, and the other end of the varistor MOV2 is connected with the ground, the capacitor C5 is grounded, the other end of the resistor R17 is connected with the other end of the capacitor C1 and the negative electrode of the voltage stabilizing diode DW1 respectively, the positive electrode of the voltage stabilizing diode DW1 is connected with the source electrode of the MOS tube Q1, the other end of the resistor R18 is connected with the other end of the capacitor C1 and one end of the capacitor C6 respectively, and the other end of the capacitor C6 is connected with the pin GND and the source electrode of the MOS tube Q1 respectively.