CN216591631U

CN216591631U - Down lamp capable of realizing touch dimming and circuit thereof

Info

Publication number: CN216591631U
Application number: CN202122312084.0U
Authority: CN
Inventors: 李文龙
Original assignee: Ningbo Klite Electric Manufacture Co Ltd
Current assignee: Ningbo Klite Electric Manufacture Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-05-24
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a down lamp for realizing touch dimming and a circuit thereof, wherein a power line is arranged at the outer side of the smaller end of a shell of the down lamp, a drive is arranged at the center of the smaller end of the shell, the larger end of the shell is clamped with an annular lampshade, a lamp panel is arranged at the end edge of the larger end of the shell, a touch surface ring is clamped on the annular lampshade, a plurality of dimming buttons are arranged on the touch surface ring, an LED isolation power supply circuit is electrically connected with an MCU power supply circuit, the MCU power supply circuit is respectively and electrically connected with a ripple removing circuit, an LED drive conversion circuit and an analog conversion PWM signal circuit, the ripple removing circuit is electrically connected with an LED lamp, the LED drive conversion circuit is respectively and electrically connected with the analog conversion PWM signal circuit and the LED lamp, and the analog conversion PWM signal circuit is electrically connected with a touch panel. The utility model solves the problem of inconvenient color temperature switching of the down lamp, provides the down lamp for realizing touch dimming and the circuit thereof, and realizes that one lamp has various selectable color temperatures and is simple in color temperature switching.

Description

Down lamp capable of realizing touch dimming and circuit thereof

Technical Field

The utility model relates to the technical field of LED lamp circuits, in particular to a down lamp capable of realizing touch dimming and a circuit thereof.

Background

At present, with the popularization of LED chip technology, the cost is lower and lower, more and more lighting equipment is composed of LED lamp strings, as for an LED household lamp, color temperature switching is a technology which is very important for users, the user experience is directly influenced, the market demand of the LED lamp at the present stage is very large, the color temperature switching which is mainly circulated in the market at present is a push switch and a sliding switch, and the problems of insensitive switching and the like exist for a long time.

At present, the market divides according to the colour temperature, and a lamps and lanterns can have 5 SKUs (2700K 3000K 3500K 4000K 5000K), and what how to realize multiple colour temperature on a lamps and lanterns is what we need to solve is the LED lamp pearl that need prepare 5 kinds of CCT of material just in production, and switches more simply.

The utility model provides a "two switch down lamps" that disclose on chinese patent literature, the bulletin number is CN214147614U, it includes the lamp main casing body, the light-emitting component of setting in the lamp main casing body, the lamp body backshell of setting at lamp main casing body top, and set up at the lamp body backshell and with light-emitting component electric connection's drive assembly, still be provided with on the lamp body backshell with drive assembly electric connection's press adjustment switch, still be provided with on the play plain noodles of the lamp main casing body with drive assembly electric connection's touch adjustment switch, the side of the lamp main casing body still is provided with the line passageway of walking. The touch regulating switch adopted by the technical scheme is arranged in the local area of the luminous surface ring, the luminous effect is easily influenced, and the regulating function is limited.

A circuit for adjusting light and color temperature of an LED light bar is disclosed in Chinese patent literature, and the publication number is CN106332369A, the circuit comprises an external dimmable LED driving power supply, a first color temperature LED series circuit, a second color temperature LED series circuit, a first current-limiting resistor and a second current-limiting resistor, wherein the anode of the external dimmable LED driving power supply is simultaneously connected with the anode of the first color temperature LED series circuit and the anode of the second color temperature LED series circuit, the cathode of the first color temperature LED series circuit is connected with the cathode of the external dimmable LED driving power supply through the first current-limiting resistor, the cathode of the second color temperature LED series circuit is connected with the cathode of the external dimmable LED driving power supply through the second current-limiting resistor, the number of LEDs in the first color temperature LED series circuit is not equal to the number of LEDs in the second color temperature LED series circuit, when the external dimmable LED driving power supply is adjusted to the maximum brightness, the current flowing through the first color temperature LED series circuit is equal to the current flowing through the second color temperature LED series circuit Of the current of (c). The technical scheme can realize the functions of dimming and color temperature adjustment by accessing the circuit with only the dimming function.

Disclosure of Invention

The utility model aims to solve the problem of inconvenience in color temperature switching in the prior down lamp technology, and provides a down lamp for realizing touch dimming and a circuit thereof, so that one lamp can be selected from various color temperatures, the color temperature is adjusted simply, and the cost is reduced.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a realize touch down lamp of adjusting luminance, includes casing, power cord, drive, lamp plate, annular face guard and touch face ring, the casing be the toper, the power cord setting is in the less end outside of casing, the drive setting is in the less end center of casing, the great end of casing and annular face guard joint, the lamp plate setting is at the great end edge of casing, touch face ring joint is on annular face guard, touch face ring be the light-passing board, be provided with a plurality of dimmer button on the touch face ring, dimmer button arrange in proper order. The user can realize the colour temperature regulation by touching the dimming button with the hand, and the operation is simple and safe.

The utility model provides a realize circuit that touch was adjusted luminance, including MCU power supply circuit, remove the ripple circuit, LED drive converting circuit, analog conversion PWM signal circuit, the LED lamp, power supply circuit is kept apart to touch panel and LED, household power is kept apart power supply circuit input electricity with LED and is connected, LED keeps apart power supply circuit output and is connected with MCU power supply circuit input electricity, MCU power supply circuit output respectively with remove the ripple circuit, LED drive converting circuit and analog conversion PWM signal circuit electricity are connected, remove ripple circuit output and LED lamp electricity and be connected, LED drive converting circuit respectively with analog conversion PWM signal circuit, LED lamp electricity is connected, analog conversion PWM signal circuit is connected with the touch panel electricity. Adopt this circuit to make down lamp have the function that touchable was adjusted luminance, further made things convenient for user's use.

Preferably, the LED isolation power supply circuit includes a resistor FR1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, an inductor L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor CY, a rectifier bridge stack DB1, a diode D1, a diode D2, a N-MOS Q2, a transformer T2 and a switch control chip, wherein one end of the resistor FR 2 is electrically connected to the household power supply, the other end is electrically connected to the input end of the rectifier bridge stack 2, the anode of the output end of the rectifier bridge DB 2 is electrically connected to one end of the capacitor C2, the inductor L2, one end of the rectifier bridge DB 2, the negative electrode of the output end of the rectifier stack DB 2 is electrically connected to the other end of the capacitor C2, one end of the anode of the capacitor C2, one end of the diode D2, one end of the primary coil of the transformer D2, and the transformer D2 end of the transformer D2, and the transformer D2 of the transformer D end of the rectifier bridge stack of the transformer D2 of the rectifier bridge D2 of the transformer D2 of the rectifier of the transformer of the rectifier of the transformer of the rectifier of the transformer of the rectifier of the transformer of, One end of the capacitor CY is electrically connected; the other end of the inductor L1 is electrically connected with one end of a resistor R1, the other end of a capacitor C3, one end of a resistor R2 and the drain of an N-MOS tube Q1 respectively, the other end of a resistor R1 is electrically connected with the other end of a capacitor C2, the other end of the resistor R2 is electrically connected with one end of a resistor R3, the other end of the resistor R3 is electrically connected with the cathode of a diode D3, one end of a resistor R10, one end of a resistor R4, one end of a capacitor C4 and a switch control chip respectively, the other end of a resistor R4 is electrically connected with the cathode of a diode D2, the other end of the capacitor C4 is electrically connected with one end of a resistor R6, one end of a capacitor C6, one end of a resistor R9, one end of a resistor R5, one end of a resistor R11, one end of a capacitor C7, the other end of a primary coil of a transformer T1 and a switch control chip, the other end of the switch control chip is electrically connected with the other end of a resistor R6, the other end of a resistor R6, the other end of a resistor R9, the other end of a resistor R8, the other end of a resistor R5, the other end of a source of a resistor R1 respectively, the other end of the resistor R11 is respectively electrically connected with the cathode of a diode D4 and the other end of a capacitor C7, one end of a secondary coil of a transformer T1 is electrically connected with the anode of a diode D1, the other end of a secondary coil of the transformer T1 is respectively electrically connected with the other end of a capacitor CY, one end of a resistor R7 and one end of a capacitor C5, the cathode of a diode D1 is respectively electrically connected with the other end of a resistor R7 and the other end of a capacitor C5, a capacitor C1, an inductor L1 and a capacitor C3 form an pi filter circuit, a capacitor C2 and a resistor R1 form a thyristor dimmer maintaining current circuit, a resistor R2, a resistor R3, a capacitor C4, a resistor R4 and a diode D2 form a starting and power supply circuit of a switch control chip, a diode D3, a resistor R10, an N-MOS tube Q1, a resistor R5, a primary coil of a transformer T1 and a switch control chip form a switch energy storage circuit, a diode D4, a diode D, a resistor R11 and a capacitor C7 form a switch absorption circuit for protecting and reducing the noise of the RCD absorption circuit, and a secondary coil of the transformer T1, a diode D1, a capacitor C5 and a resistor R7 form a secondary rectifying circuit of the switching power supply.

Preferably, the MCU power supply circuit includes a filter capacitor C4, a zener diode Z2, a resistor R4, a capacitor C6 and an N-MOS transistor Q1, wherein an anode of an output end of the LED isolation power supply circuit is electrically connected to an anode of the filter capacitor C4, one end of the resistor R4 and a drain of the N-MOS transistor Q1, a cathode of an output end of the LED isolation power supply circuit is electrically connected to another end of the filter capacitor C4, an anode of the zener diode Z2 and a cathode of the capacitor C6, another end of the resistor R4 is electrically connected to a cathode of the zener diode and a gate of the N-MOS transistor Q1, and a source of the N-MOS transistor Q1 is electrically connected to an anode of the capacitor C6. The MCU power supply circuit provides stable voltage for the LED lamp.

Preferably, the ripple removing circuit comprises a resistor R6, a capacitor C5, a diode D2, a zener diode Z1, an N-MOS transistor Q2 and an N-MOS transistor Q3, wherein one end of the resistor R6 is electrically connected with an anode of the diode D2, a drain of the N-MOS transistor Q2 and a drain of the N-MOS transistor Q3, the other end of the resistor R6 is electrically connected with an anode of the capacitor C5, a cathode of the diode D2 and a cathode of the zener diode Z1, an anode of the zener diode Z1 is electrically connected with a gate of the N-MOS transistor Q2 and a gate of the N-MOS transistor Q3, and a source of the N-MOS transistor Q2 is electrically connected with a source of the N-MOS transistor Q3 and the LED lamp. The resistor R6, the capacitor C5, the diode D2 and the voltage stabilizing diode Z1 provide driving voltage for the N-MOS transistor Q2 and the N-MOS transistor Q3, and the ripple of the output voltage is reduced by reducing Vpp.

Preferably, the LED driving conversion circuit includes a resistor R22, a resistor R23, a resistor R25, a resistor R26, a resistor R29, a discharge resistor R30, a discharge resistor R31, a discharge resistor R32, a bypass capacitor C21, a bypass capacitor C22, a bypass capacitor C23, an N-MOS transistor Q5, an N-MOS transistor Q6, an N-MOS transistor Q7, and an N-MOS transistor Q8, wherein one end of the resistor R22 is electrically connected to the output terminal of the MCU power supply circuit, the other end of the resistor R22 is electrically connected to one end of the resistor R25, a gate of the N-MOS transistor Q5, and a drain of the N-MOS transistor Q8, the gate of the N-MOS transistor Q8 is electrically connected to one end of the resistor R29, one end of the capacitor R23, one end of the discharge resistor R32, the other end of the resistor R29 is electrically connected to the analog conversion PWM signal circuit, and the source of the N-MOS transistor Q8 is electrically connected to the other end of the bypass capacitor C23, the other end of the discharge resistor R32, the source, the bypass capacitor R5, one end of the bypass capacitor Q21, one end of the bypass capacitor Q-MOS transistor Q21, the bypass capacitor C2, the bypass capacitor C382, the bypass capacitor C2, the resistor R8, and the drain of the resistor R8 are electrically connected to the drain of the resistor R8, respectively, One end of a discharge resistor R30, a source electrode of an N-MOS tube Q6, one end of a bypass capacitor C22, one end of a discharge resistor R31 and a source electrode of an N-MOS tube Q7 are electrically connected, a drain electrode of the N-MOS tube Q5 is electrically connected with one end of a resistor R23 and one end of a resistor R26 respectively, the other end of the resistor R23 is electrically connected with an output end of the MCU power supply circuit, the other end of the resistor R26 is electrically connected with the other end of the bypass capacitor C21, the other end of the discharge resistor R30 and a grid electrode of the N-MOS tube Q6 respectively, a drain electrode of the N-MOS tube Q6 is electrically connected with the LED lamp, the other end of the bypass capacitor C22 is electrically connected with the other end of the resistor R25 and the grid electrode of the N-MOS tube Q7 at the other end of the discharge resistor R31, and a drain electrode of the N-MOS tube Q7 is electrically connected with the LED lamp. When the N1 is at a high level, the PWM signal drives an N-MOS tube Q8 through a resistor R29, one path of Vmcu is grounded through a resistor R22 and an N-MOS tube Q8, and an N-MOS tube Q6 is closed; the other Vmcu path drives an N-MOS tube Q6N-MOS tube through a resistor R23 and a resistor R26, and the N-MOS tube Q6 is conducted to drive a DC path of LED; when the N1 is at a low level, the N-MOS transistor Q8 is turned off, the Vmcu drives the N-MOS transistor Q5 through the resistor R22, and the grid of the N-MOS transistor Q6 is pulled low and is turned off; the other path of Vmcu passes through a resistor R22, a resistor R25 and a grid of an N-MOS tube Q7, and the N-MOS tube Q7 is conducted to drive one path of DW LED.

Preferably, the analog conversion PWM signal circuit includes a signal conversion chip U1, a touch signal processing chip U2, a touch sensitive setting capacitor C28, a touch sensitive setting capacitor C29, a power supply bypass capacitor C30, and a power supply bypass capacitor E7, an input end of the signal conversion chip is electrically connected to an output end of the MCU power supply circuit, an output end of the signal conversion chip U1 is electrically connected to the LED driving conversion circuit, the touch signal processing chip U2 is electrically connected to the touch panel, the touch sensitive setting capacitor C28 is electrically connected to the touch sensitive setting capacitor C29 in parallel, one end of the touch signal processing chip U2 is electrically connected to the touch signal processing chip, the other end of the touch signal processing chip is electrically connected to one end of the power supply bypass capacitor C30, one end of the power supply bypass capacitor E7, an output end of the MCU power supply circuit, and the touch signal processing chip U2, and the other end of the power supply bypass capacitor C30 is electrically connected to the other end of the power supply bypass capacitor E7. The signal conversion chip U1 converts the touch signal output voltage signal into a PWM signal, and the duty ratio output corresponding to the signal conversion chip U1 is set by detecting different pin voltages output by the touch signal processing chip U2, so that different current ratios of two DC/DW paths of LEDs are realized, and different color temperature outputs of the LED lamp are realized.

Preferably, the touch panel comprises a touch chip P1, and the touch chip P1 is electrically connected with the touch signal processing chip U2. The touch chip P1 is mounted on the touch face ring, and the user can adjust the color temperature by direct touch.

Preferably, the LED lamp includes a plurality of light emitting diodes DC and a plurality of light emitting diodes DW, the plurality of light emitting diodes DC are electrically connected in series, and the plurality of light emitting diodes DW are electrically connected in series. The color temperature of the DC LED lamp is different from that of the DW LED lamp, and the color temperature adjusting range of the down lamp is between the color temperature of the DC LED lamp and that of the DW LED lamp.

Therefore, the utility model has the following beneficial effects: (1) the current flowing through the DC path LED lamp and the current flowing through the DW path LED lamp are controlled, so that five different color temperatures are realized; (2) the color temperature is switched by touch, so that the operation of a user is facilitated, the user experience is improved, and the touch screen is safer.

Drawings

Fig. 1 is a schematic view of the structure of the down lamp of the present invention.

Fig. 2 is a schematic view of a touch surface ring of the downlight of the present invention.

Fig. 3 is a cross-sectional view of a downlight of the present invention.

Fig. 4 is a block diagram of the circuit schematic connection structure of the present invention.

Fig. 5 is a circuit connection diagram of an embodiment of the utility model.

Fig. 6 is a circuit diagram of an LED isolated power supply according to an embodiment of the present invention.

In the figure: 1. the LED lamp comprises a touch surface ring 2, a dimming button 3, a shell 4, a power line 5, a driver 6, a lamp panel 7, an annular mask 11, an MCU power supply circuit 12, a ripple removing circuit 13, an LED drive conversion circuit 14, an analog conversion PWM signal circuit 15, an LED lamp 16, a touch panel 17 and an LED isolation power supply circuit.

Detailed Description

The utility model is further described in the following detailed description with reference to the drawings in which:

as shown in fig. 1, fig. 2, fig. 3, a down lamp capable of realizing touch dimming, including casing 3, power cord 4, drive 5, lamp plate 6, annular face guard and touch face ring, casing 3 be the toper, power cord 4 sets up in the 3 less end outsides of casing, drive 5 sets up in the 3 less end centers of casing, the 3 great end of casing and annular face guard joint, lamp plate 6 sets up at the 3 great end edges of casing, touch face ring joint is on annular face guard, touch face ring be the light-passing board, be provided with a plurality of dimmer button on the touch face ring, dimmer button arrange in proper order. The user can realize the colour temperature regulation by touching the dimming button with the hand, and the operation is simple and safe.

As shown in fig. 4, a circuit for realizing touch dimming includes an MCU power supply circuit 11, a ripple removing circuit 12, an LED driving conversion circuit 13, an analog conversion PWM signal circuit 14, an LED lamp 15, a touch panel 16 and an LED isolation power circuit 17, wherein a household power supply is electrically connected to an input terminal of the LED isolation power circuit 17, an output terminal of the LED isolation power circuit is electrically connected to an input terminal of the MCU power supply circuit 11, an output terminal of the MCU power supply circuit 11 is electrically connected to the ripple removing circuit 12, the LED driving conversion circuit 13 and the analog conversion PWM signal circuit 14, an output terminal of the ripple removing circuit 12 is electrically connected to the LED lamp 15, the LED driving conversion circuit 13 is electrically connected to the analog conversion PWM signal circuit 14 and the LED lamp 15, and the analog conversion PWM signal circuit 14 is electrically connected to the touch panel 16. Adopt this circuit to make down lamp have the function that touchable was adjusted luminance, further made things convenient for user's use.

As shown in fig. 6, the LED isolation power supply circuit 17 includes a resistor FR1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, an inductor L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor CY, a rectifier bridge DB1, a diode D1, a diode D2, a N-MOS Q2, a transformer T2 and a switch control chip, wherein one end of the resistor FR 2 is electrically connected to the household power supply, the other end is electrically connected to the input end of the rectifier bridge DB 2, the positive electrode of the output end of the rectifier bridge DB 2 is electrically connected to one end of the capacitor C2, the other end of the rectifier bridge DB 2, the primary end of the inductor L2, and the negative electrode of the rectifier bridge D2, the other end of the transformer C2, the primary end of the transformer C2, the primary end of the transformer C2, the secondary end of the transformer 2, and the diode of the diode D2, the transformer 2, the diode of the transformer D2, the transformer D2, the secondary end of the transformer 2, the transformer D2, and the secondary end of the transformer D2 of the transformer of the N-b of the N-D2 of the N-b of the N-m of the N-b 2 of the N-b of the N-m-b of the N-b 2 of the N-m-b 2 of the N-b-, One end of the capacitor CY is electrically connected; the other end of the inductor L1 is electrically connected to one end of a resistor R1, the other end of a capacitor C3, one end of a resistor R2, and a drain of a N-MOS transistor Q1, the other end of a resistor R1 is electrically connected to the other end of a capacitor C2, the other end of a resistor R2 is electrically connected to one end of a resistor R3, the other end of a resistor R3 is electrically connected to a cathode of a diode D3, one end of a resistor R3, one end of a capacitor C3, and a switch control chip, the other end of the resistor R3 is electrically connected to one end of a resistor R3, one end of a capacitor C3, one end of a resistor R3, one end of a resistor C3, the other end of a primary winding of a transformer T3, and the switch control chip, the other end of the switch control chip is electrically connected to one end of a resistor R3, the other end of a resistor R3, the source of a resistor R3, the N-MOS transistor Q3, the other end of the resistor R11 is respectively electrically connected with the cathode of a diode D4 and the other end of a capacitor C7, one end of a secondary coil of a transformer T1 is electrically connected with the anode of a diode D1, the other end of a secondary coil of the transformer T1 is respectively electrically connected with the other end of a capacitor CY, one end of a resistor R7 and one end of a capacitor C5, the cathode of a diode D1 is respectively electrically connected with the other end of a resistor R7 and the other end of a capacitor C5, a capacitor C1, an inductor L1 and a capacitor C3 form an pi filter circuit, a capacitor C2 and a resistor R1 form a thyristor dimmer maintaining current circuit, a resistor R2, a resistor R3, a capacitor C4, a resistor R4 and a diode D2 form a starting and power supply circuit of a switch control chip, a diode D3, a resistor R10, an N-MOS tube Q1, a resistor R5, a primary coil of a transformer T1 and a switch control chip form a switch energy storage circuit, a diode D4, a diode D, a resistor R11 and a capacitor C7 form a switch absorption circuit for protecting and reducing the noise of the RCD absorption circuit, the resistor R6 is a switching frequency adjusting resistor of a switching control chip, the resistor C6 is a compensation capacitor of the control chip comp, the resistor R9 and the resistor R8 are output voltage OVP pull-up and pull-down voltage dividing resistors, the capacitor CY is a circuit primary and secondary EMI noise suppression safety capacitor, and a transformer T1 secondary coil, a diode D1, a capacitor C5 and a resistor R7 form a switching power supply secondary rectifying circuit.

As shown in fig. 5, the MCU power supply circuit 11 includes a filter capacitor C4, a zener diode Z2, a resistor R4, a capacitor C6, and an N-MOS transistor Q1, wherein an anode of an output terminal of the LED isolation power supply circuit 17 is electrically connected to an anode of the filter capacitor C4, one end of the resistor R4, and a drain of the N-MOS transistor Q1, a cathode of an output terminal of the LED isolation power supply circuit 17 is electrically connected to another end of the filter capacitor C4, an anode of the zener diode Z2, and a cathode of the capacitor C6, another end of the resistor R4 is electrically connected to a cathode of the zener diode and a gate of the N-MOS transistor Q1, and a source of the N-MOS transistor Q1 is electrically connected to an anode of the capacitor C6. The MCU power supply circuit 11 provides a stable voltage to the LED lamp 15. The ripple removing circuit 12 comprises a resistor R6, a capacitor C5, a diode D2, a voltage stabilizing diode Z1, an N-MOS tube Q2 and an N-MOS tube Q3, wherein one end of the resistor R6 is electrically connected with an anode of the diode D2, a drain of the N-MOS tube Q2 and a drain of the N-MOS tube Q3 respectively, the other end of the resistor R6 is electrically connected with an anode of the capacitor C5, a cathode of the diode D2 and a cathode of the voltage stabilizing diode Z1 respectively, an anode of the voltage stabilizing diode Z1 is electrically connected with a grid of the N-MOS tube Q2 and a grid of the N-MOS tube Q3 respectively, and a source of the N-MOS tube Q2 is electrically connected with a source of the N-MOS tube Q3 and the LED lamp 15 respectively. The resistor R6, the capacitor C5, the diode D2 and the voltage stabilizing diode Z1 provide driving voltage for the N-MOS transistor Q2 and the N-MOS transistor Q3, and the ripple of the output voltage is reduced by reducing Vpp. The analog conversion PWM signal circuit 14 includes a signal conversion chip U1, a touch signal processing chip U2, a touch sensitive setting capacitor C28, a touch sensitive setting capacitor C29, a power supply bypass capacitor C30 and a power supply bypass capacitor E7, wherein the input end of the signal conversion chip is electrically connected with the output end of the MCU power supply circuit 11, the output end of the signal conversion chip U1 is electrically connected with the LED drive conversion circuit 13, the touch signal processing chip U2 is electrically connected with the touch panel 16, the touch sensitive setting capacitor C28 is connected with the touch sensitive setting capacitor C29 in parallel, one end of the touch signal processing chip U2 is electrically connected, the other end of the touch signal processing chip U2 is electrically connected with one end of the power supply bypass capacitor C30, one end of the power supply bypass capacitor E7, the output end of the MCU power supply circuit 11 and the touch signal processing chip U2, and the other end of the power supply bypass capacitor C30 is electrically connected with the other end of the power supply bypass capacitor E7. The signal conversion chip U1 converts the touch signal output voltage signal into a PWM signal, and the duty ratio output corresponding to the signal conversion chip U1 is set by detecting different pin voltages output by the touch signal processing chip U2, so that different current ratios of two DC/DW paths of LEDs are realized, and different color temperature outputs of the LED lamp 15 are realized. The touch panel 16 comprises a touch chip P1, and the touch chip P1 is electrically connected with the touch signal processing chip U2. The touch chip P1 is mounted on the touch face ring, and the user can adjust the color temperature by direct touch. The LED lamp 15 comprises a plurality of light emitting diodes DC and a plurality of light emitting diodes DW, wherein the plurality of light emitting diodes DC are electrically connected in series, and the plurality of light emitting diodes DW are electrically connected in series. The color temperatures of the DC LED lamp 15 and the DW LED lamp 15 are different, and the adjusting range of the color temperature of the down lamp is between the color temperature of the DC LED lamp 15 and the color temperature of the DW LED lamp 15.

As shown in fig. 5, the color temperature of the DC LED lamp 15 is 2700K, the color temperature of the DW LED lamp 15 is 5000K, the LED driving and converting circuit 13 includes a resistor R22, a resistor R23, a resistor R25, a resistor R26, a resistor R29, a discharging resistor R30, a discharging resistor R31, a discharging resistor R32, a bypass capacitor C21, a bypass capacitor C22, a bypass capacitor C23, an N-MOS Q5, an N-MOS Q6, an N-MOS Q7, and an N-MOS Q8, one end of the resistor R22 is electrically connected to the output end of the MCU power supply circuit 11, the other end of the resistor R22 is electrically connected to one end of the resistor R25, a gate of the N-MOS Q5, and a drain of the N-MOS Q8, the gate of the N-MOS Q8 is electrically connected to one end of the resistor R29, one end of the capacitor R23, one end of the discharging resistor R32, the other end of the resistor R29 is electrically connected to the analog conversion signal circuit 14, the other end of the resistor R6352 is electrically connected to the source of the analog conversion circuit, and the source of the N-MOS Q8 is electrically connected to the bypass capacitor C23, The other end of the discharge resistor R32, the source of an N-MOS tube Q5, one end of a bypass capacitor C21, one end of a discharge resistor R30, the source of an N-MOS tube Q6, one end of a bypass capacitor C22, one end of a discharge resistor R31 and the source of an N-MOS tube Q7 are electrically connected, the drain of the N-MOS tube Q5 is electrically connected with one end of a resistor R23 and one end of a resistor R26 respectively, the other end of a resistor R23 is electrically connected with the output end of the MCU power supply circuit 11, the other end of the resistor R26 is electrically connected with the other end of the bypass capacitor C21, the other end of the discharge resistor R30 and the grid of the N-MOS tube Q6 respectively, the drain of the N-MOS tube Q6 is electrically connected with the LED lamp 15, the other end of the bypass capacitor C22 is electrically connected with the other end of the resistor R25 and the grid of the N-MOS tube Q7 at the other end of the discharge resistor R31, and the drain of the N-MOS tube Q7 is electrically connected with the LED lamp 15. When the N1 is at a high level, the PWM signal drives an N-MOS tube Q8 through a resistor R29, one path of Vmcu is grounded through a resistor R22 and an N-MOS tube Q8, and an N-MOS tube Q6 is closed; the other Vmcu path drives an N-MOS tube Q6N-MOS tube through a resistor R23 and a resistor R26, and the N-MOS tube Q6 is conducted to drive a DC path of LED; when the N1 is at a low level, the N-MOS transistor Q8 is turned off, the Vmcu drives the N-MOS transistor Q5 through the resistor R22, and the grid of the N-MOS transistor Q6 is pulled low and is turned off; the other path of Vmcu passes through a resistor R22, a resistor R25 and a grid of an N-MOS tube Q7, and the N-MOS tube Q7 is conducted to drive one path of DW LED.

In the embodiment shown in fig. 5, when KEY4 is pressed by the touch panel 16, P1.1 outputs a high level with a duty ratio of 100%, the current of the DC LED lamp 15 is 100% of the total current, and the integrated color temperature is shown as 2700K; when the touch panel 16 presses KEY1, P1.1 outputs a PWM signal with a duty cycle of 15%, the current of the DC LED lamp 15 is 85% of the total current, the current of the DW LED lamp 15 is 15% of the total current, and the integrated color temperature is displayed as 3000K; when the touch panel 16 presses KEY2, P1.1 outputs a PWM signal with a duty cycle of 35%, the current of the DC LED lamp 15 is 65% of the total current, the current of the DW LED lamp 15 is 35% of the total current, and the integrated color temperature is 3500K; when the touch panel 16 presses KEY3, P1.1 outputs a PWM signal with a duty cycle of 40%, the current of the DC LED lamp 15 is 40% of the total current, the current of the DW LED lamp 15 is 60% of the total current, and the integrated color temperature is 4000K; when KEY5 is pressed by the touch panel 16, P1.1 outputs a low level with a duty cycle of 100%, the DW LED lamp 15 current is 100% of the total current, and the integrated color temperature is displayed as 5000K.

It is obvious that the utility model is not restricted to the details of the embodiments presented above, but that there are numerous specific embodiments in which the utility model can be implemented, including the essential features of the utility model. Accordingly, the present embodiments are to be considered as illustrative and not restrictive. Any changes or modifications of the technical solution of the present invention by those skilled in the art without departing from the scope of the claims of the present invention are covered in the claims of the present invention.

Claims

1. The utility model provides a realize touch down lamp of adjusting luminance, includes casing (3), power cord (4), drive (5), lamp plate (6), annular face guard (7) and touch face ring (1), casing (3) be the toper, power cord (4) set up in the less end outside of casing (3), drive (5) set up in the less end center of casing (3), the great end of casing (3) and annular face guard (7) joint, lamp plate (6) set up at the great end edge of casing (3), touch face ring (1) joint is on annular face guard (7), its characterized in that: the touch surface ring (1) is a light-transmitting plate, a plurality of dimming buttons (2) are arranged on the touch surface ring (1), and the dimming buttons (2) are sequentially arranged.

2. A circuit for realizing touch dimming is applied to the down lamp for realizing touch dimming in claim 1, and is characterized in that: the household power supply system comprises an MCU (microprogrammed control Unit) power supply circuit (11), a ripple removing circuit (12), an LED drive conversion circuit (13), an analog conversion PWM signal circuit (14), an LED lamp (15), a touch panel (16) and an LED isolation power supply circuit (17), a household power supply is electrically connected with the input end of the LED isolation power supply circuit (17), the output end of the LED isolation power supply circuit (17) is electrically connected with the input end of the MCU power supply circuit (11), the output end of the MCU power supply circuit (11) is respectively electrically connected with the ripple removing circuit (12), the LED drive conversion circuit (13), the analog conversion PWM signal circuit (14) is electrically connected with the LED lamp (15), the output end of the ripple removing circuit (12) is electrically connected with the analog conversion PWM signal circuit (14), the LED drive conversion circuit (13) is respectively electrically connected with the analog conversion PWM signal circuit (14), and the LED lamp (15), and the analog conversion PWM signal circuit (14) is electrically connected with the touch panel (16).

3. The circuit for realizing touch dimming according to claim 2, wherein the LED isolation power supply circuit (17) comprises a resistor FR1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, an inductor L1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor CY, a rectifier bridge DB1, a diode D1, a diode D2, a diode D3, a diode D4, an N-MOS transistor Q1, a transformer T1 and a switch control chip, wherein one end of the resistor FR1 is electrically connected to the household power supply, the other end of the resistor FR1 is electrically connected to the input end of the rectifier bridge DB1, the positive electrode of the output end of the rectifier bridge DB1 is electrically connected to the capacitor C1 and the rectifier L1, one end of the rectifier bridge 1 is electrically connected to the negative electrode of the capacitor C1 and the other end of the capacitor C1 and the output end of the capacitor C1 is connected to the capacitor C1, the other end of the rectifier bridge output end of the rectifier bridge 1, and the capacitor C1 is connected to the capacitor C1, respectively, The anode of the diode D2, one end of the resistor R8, the anode of the diode D4, one end of the primary coil of the transformer T1 and one end of the capacitor CY are electrically connected; the other end of the inductor L1 is electrically connected with one end of a resistor R1, the other end of a capacitor C3, one end of a resistor R2 and the drain of an N-MOS tube Q1 respectively, the other end of a resistor R1 is electrically connected with the other end of a capacitor C2, the other end of the resistor R2 is electrically connected with one end of a resistor R3, the other end of the resistor R3 is electrically connected with the cathode of a diode D3, one end of a resistor R10, one end of a resistor R4, one end of a capacitor C4 and a switch control chip respectively, the other end of a resistor R4 is electrically connected with the cathode of a diode D2, the other end of the capacitor C4 is electrically connected with one end of a resistor R6, one end of a capacitor C6, one end of a resistor R9, one end of a resistor R5, one end of a resistor R11, one end of a capacitor C7, the other end of a primary coil of a transformer T1 and a switch control chip, the other end of the switch control chip is electrically connected with the other end of a resistor R6, the other end of a resistor R6, the other end of a resistor R9, the other end of a resistor R8, the other end of a resistor R5, the other end of a source of a resistor R1 respectively, the other end of the resistor R11 is electrically connected with the cathode of the diode D4 and the other end of the capacitor C7 respectively, one end of the secondary coil of the transformer T1 is electrically connected with the anode of the diode D1, the other end of the secondary coil of the transformer T1 is electrically connected with the other end of the capacitor CY, one end of the resistor R7 and one end of the capacitor C5 respectively, and the cathode of the diode D1 is electrically connected with the other end of the resistor R7 and the other end of the capacitor C5 respectively.

4. The circuit for realizing touch dimming according to claim 2, wherein the MCU power supply circuit (11) comprises a filter capacitor C4, a zener diode Z2, a resistor R4, a capacitor C6 and an N-MOS transistor Q1, wherein an anode of an output terminal of the LED isolation power supply circuit (17) is electrically connected to an anode of the filter capacitor C4, one end of the resistor R4 and a drain of the N-MOS transistor Q1, a cathode of an output terminal of the LED isolation power supply circuit (17) is electrically connected to the other end of the filter capacitor C4, an anode of the zener diode Z2 and a cathode of the capacitor C6, another end of the resistor R4 is electrically connected to a cathode of the zener diode and a gate of the N-MOS transistor Q1, and a source of the N-MOS transistor Q1 is electrically connected to an anode of the capacitor C6.

5. The circuit for realizing touch dimming according to claim 2, wherein the ripple removing circuit (12) comprises a resistor R6, a capacitor C5, a diode D2, a zener diode Z1, an N-MOS transistor Q2 and an N-MOS transistor Q3, one end of the resistor R6 is electrically connected with the anode of the diode D2, the drain of the N-MOS transistor Q2 and the drain of the N-MOS transistor Q3 respectively, the other end of the resistor R6 is electrically connected with the anode of the capacitor C5, the cathode of the diode D2 and the cathode of the zener diode Z1 respectively, the anode of the zener diode Z1 is electrically connected with the gate of the N-MOS transistor Q2 and the gate of the N-MOS transistor Q3 respectively, and the source of the N-MOS transistor Q2 is electrically connected with the source of the N-MOS transistor Q3 and the LED lamp (15) respectively.

6. The circuit for realizing touch dimming according to claim 2, wherein the LED driving switching circuit (13) comprises a resistor R22, a resistor R23, a resistor R25, a resistor R26, a resistor R29, a discharging resistor R30, a discharging resistor R31, a discharging resistor R32, a bypass capacitor C21, a bypass capacitor C22, a bypass capacitor C23, an N-MOS transistor Q5, an N-MOS transistor Q6, an N-MOS transistor Q7, an N-MOS transistor Q8, one end of the resistor R22 is electrically connected to the output terminal of the MCU power supply circuit (11), the other end of the resistor R22 is electrically connected to one end of the resistor R25, a gate of the N-MOS transistor Q5, and a drain of the N-MOS transistor Q8, a gate of the N-MOS transistor Q8 is electrically connected to one end of the resistor R29, one end of the capacitor R23, one end of the discharging resistor R32, the other end of the resistor R29 is electrically connected to the analog switching PWM signal circuit (14), and the other end of the resistor R8 is electrically connected to the source of the bypass capacitor C23, The other end of the discharge resistor R32, the source of an N-MOS tube Q5, one end of a bypass capacitor C21, one end of a discharge resistor R30, the source of an N-MOS tube Q6, one end of a bypass capacitor C22, one end of a discharge resistor R31 and the source of an N-MOS tube Q7 are electrically connected, the drain of the N-MOS tube Q5 is electrically connected with one end of a resistor R23 and one end of a resistor R26 respectively, the other end of a resistor R23 is electrically connected with the output end of the MCU power supply circuit (11), the other end of the resistor R26 is electrically connected with the other end of the bypass capacitor C21, the other end of a discharge resistor R30 and the grid of the N-MOS tube Q6 respectively, the drain of the N-MOS tube Q6 is electrically connected with the LED lamp (15), the other end of the bypass capacitor C22 is electrically connected with the other end of the resistor R25, the other end of the discharge resistor R31 and the grid of the N-MOS tube Q7, and the drain of the N-MOS tube Q7 is electrically connected with the LED lamp (15).

7. The circuit for realizing touch dimming according to claim 2, wherein the analog conversion PWM signal circuit (14) comprises a signal conversion chip U1, a touch signal processing chip U2, a touch sensitive setting capacitor C28, a touch sensitive setting capacitor C29, a power supply bypass capacitor C30, and a power supply bypass capacitor E7, the input end of the signal conversion chip is electrically connected to the output end of the MCU power supply circuit (11), the output end of the signal conversion chip U1 is electrically connected to the LED driving conversion circuit (13), the touch signal processing chip U2 is electrically connected to the touch panel (16), the touch sensitive setting capacitor C28 is electrically connected to the touch sensitive setting capacitor C29 in parallel, one end of the touch signal processing chip U2 is electrically connected, and the other end of the signal conversion chip is electrically connected to one end of the power supply bypass capacitor C30, one end of the power supply bypass capacitor E7, the output end of the MCU power supply circuit (11), and the touch signal processing chip U2, the other end of the power supply bypass capacitor C30 is electrically connected with the other end of the power supply bypass capacitor E7.

8. The circuit for realizing touch dimming according to claim 2, wherein the touch panel (16) comprises a touch chip P1, and the touch chip P1 is electrically connected with the touch signal processing chip U2.

9. A circuit for realizing touch dimming according to claim 2, wherein the LED lamp (15) comprises a plurality of LEDs DC and a plurality of LEDs DW, the plurality of LEDs DC are electrically connected in series, and the plurality of LEDs DW are electrically connected in series.