Touch control circuit and desk lamp

Abstract

The utility model discloses a touch control circuit and a desk lamp, and relates to the technical field of desk lamp control, the circuit comprises a plurality of touch switches which are used for generating corresponding LED touch control signals when being triggered by a user, the touch control signal comprises a reading mode control signal, a working mode control signal, a brightness adjustment control signal and a color temperature adjustment control signal; the main control unit is used for outputting a corresponding LED control signal according to the corresponding LED touch control signal; and the LED driving circuit is used for receiving the LED control signal sent by the main control unit and driving the LED lamp to work according to the LED control signal. Thus, the touch control circuit can enable a user to control the table lamp independently according to the brightness or the color temperature through the plurality of touch switches and control the brightness and the color temperature of the table lamp through a set mode, so that the table lamp can adjust the brightness and the color temperature of the table lamp through the independent or set mode, the operation convenience of the user is improved, and the user experience is improved. And the table lamp is more attractive in design.

Description

Technical Field

[0001] The utility model relates to the technical field of desk lamp control, in particular to a touch control circuit and a desk lamp. Background Art

[0002] The control and adjustment functions of desk lamps on the market are single, which is difficult to meet the functional needs of users. In addition, desk lamps on the market often use traditional mechanical buttons to control and adjust the desk lamps. The design is not beautiful and after continuous use, the mechanical buttons are prone to failure or false triggering due to problems such as poor contact, desoldering of solder joints, and disconnection of connecting wires. Utility Model Content

[0003] The main purpose of the utility model is to propose a touch control circuit and a desk lamp, which aims to solve the problems that the desk lamp has a single function and poor performance, is difficult to meet the functional needs of users, is not beautiful in design, and is prone to poor contact, desoldering of solder joints, disconnection of connecting wires, etc. after continuous use.

[0004] To achieve the above objectives, the present invention proposes a touch control circuit, which is applied to a desk lamp. The touch control circuit includes:

[0005] A plurality of touch switches, each of which is configured to generate corresponding LED touch control signals when triggered by a user, wherein the touch control signals include a reading mode control signal, an operating mode control signal, a brightness adjustment control signal, and a color temperature adjustment control signal;

[0006] a main control unit, wherein a signal receiving end of the main control unit is electrically connected to the touch switch, and is configured to output a corresponding LED control signal according to a corresponding LED touch control signal;

[0007] An LED driving circuit, wherein the first end of the LED driving circuit is electrically connected to the adjustment signal output end of the main control unit, and the first end of the LED driving circuit is used to be electrically connected to the LED lamp, and is used to receive and drive the LED lamp to work according to the LED control signal sent by the main control unit.

[0008] In one embodiment, the touch switch is further configured to generate a corresponding time adjustment touch signal upon being triggered by a long press by a user, and to generate a corresponding time confirmation touch signal upon being triggered by a short press by a user, and the touch control circuit further comprises:

[0009] A time control unit, wherein the signal receiving end of the time control unit is electrically connected to the touch switch, and the signal output end of the time control unit is electrically connected to the digital tube, for receiving the corresponding time adjustment touch signal to adjust the time information displayed on the digital tube, and confirming the time information by receiving the corresponding time confirmation touch signal.

[0010] In one embodiment, the LED driving circuit includes a power input terminal, an inductor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first LED lamp, a second LED lamp, a first capacitor, a second capacitor, a first transistor, a second transistor, a third transistor, a first diode, and a constant current driving chip;

[0011] Wherein, the first end of the inductor is electrically connected to the power input end and the third end of the constant current driver chip, the second end of the inductor is electrically connected to the drain of the first transistor and the anode of the first diode, the cathode of the first diode is electrically connected to the first end of the first capacitor, the first end of the second capacitor, the anode of the first LED lamp and the anode of the second LED lamp respectively, the second end of the first capacitor and the second end of the second capacitor are grounded, the cathode of the first LED lamp is electrically connected to the drain of the second transistor, the gate of the second transistor is electrically connected to the first end of the third resistor and the adjustment signal output end of the main control unit, the second end of the third resistor is grounded, the cathode of the second LED lamp is electrically connected to the drain of the third transistor, The gate of the third transistor is electrically connected to the first end of the fourth resistor and the adjustment signal output end of the main control unit, the second end of the fourth resistor is grounded, the source of the third transistor and the source of the second transistor are electrically connected to the first end of the fifth resistor and the fifth end of the constant current driver chip respectively, the second end of the fifth resistor is grounded, the fourth end of the constant current driver chip is electrically connected to the adjustment signal output end of the main control unit and the first end of the first resistor, the second end of the first resistor is grounded, the second end of the constant current driver chip is grounded, the first end of the constant current driver chip is electrically connected to the gate of the first transistor, the source of the first transistor is electrically connected to the first end of the second resistor and the second end of the constant current driver chip, and the second end of the second resistor is grounded.

[0012] In one embodiment, the touch switch is further configured to generate a corresponding timed touch control signal upon user triggering, the main control unit is further configured to generate a timer start control signal based on the received timed touch control signal, and the time control unit further includes:

[0013] A timer is electrically connected to the time signal input end of the time control unit, and is used to control the timer to generate and send a timing signal when the time control unit receives a timer start control signal, so as to control the time control unit to stop the desk lamp from working after the timing is completed.

[0014] In one embodiment, the touch control circuit further includes:

[0015] A power supply unit, wherein the power output end of the power supply unit is electrically connected to the power input end of the main control unit, the power input end of the time control unit and the power input end of the LED drive circuit, respectively, for providing electric energy.

[0016] In one embodiment, the power supply unit includes:

[0017] Battery, used to output battery voltage;

[0018] A voltage conversion unit, wherein the power input end of the voltage conversion unit is electrically connected to the power output end of the battery, and the power output end of the voltage conversion unit is electrically connected to the power input end of the main control unit, the power input end of the LED drive circuit and the power input end of the time control unit, respectively, for converting the battery voltage into an operating voltage for use by the main control unit, the LED drive circuit and the time control unit.

[0019] In one embodiment, the power supply unit further includes:

[0020] A charging unit, wherein the power output end of the charging unit is electrically connected to the positive electrode of the battery and is used to connect to an external power source; the charging unit is also used to charge the battery by converting the external power supply voltage into a charging voltage.

[0021] In one embodiment, the charging unit includes:

[0022] A wireless charging unit is provided with a receiving coil, and the power output end of the wireless charging unit is electrically connected to the positive pole of the battery. The wireless charging unit is used to receive magnetic flux emitted by an external wireless transmitting device and generate charging power according to the magnetic flux through the receiving coil to charge the battery.

[0023] In one embodiment, the power supply unit further includes:

[0024] A battery protection unit is electrically connected to the battery and is used to prevent the battery from being overcharged or over-discharged.

[0025] The present invention also provides a desk lamp, which includes the touch control circuit and the wireless transmitting device as described above.

[0026] The technical solution of the present invention is applied to a desk lamp by adopting a touch control circuit, the touch control circuit comprising a plurality of touch switches, the touch switches being configured to generate corresponding LED touch control signals when triggered by a user, the touch control signals comprising a reading mode control signal, a working mode control signal, a brightness adjustment control signal, and a color temperature adjustment control signal; a main control unit, the signal receiving end of the main control unit being electrically connected to the touch switches, and configured to output corresponding LED control signals according to the corresponding LED touch control signals; an LED driving circuit, the first end of the LED driving circuit being electrically connected to the adjustment signal output end of the main control unit, the first end of the LED driving circuit being electrically connected to the LED lamp, and configured to receive and drive the LED lamp according to the LED control signals sent by the main control unit. In this way, the touch control circuit enables the user to control the brightness or color temperature of the desk lamp individually through the plurality of touch switches, and to control the brightness and color temperature of the desk lamp through a set mode, thereby enabling the desk lamp to adjust the brightness and color temperature of the desk lamp individually or in a set mode, improving the convenience of user operation and making the desk lamp design more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a circuit system block diagram of an embodiment of a touch control circuit provided by the present invention;

[0029] Figure 2 This is a specific circuit structure diagram of the LED drive circuit in the touch control circuit provided by the utility model.

[0030] Description of Figure Numbers:

[0031] 1-touch switch; 2-main control unit; 3-LED drive circuit; 4-LED lamp; 5-time control unit; 6-digital tube; 7-timer; 8-power supply unit; 81-battery; 82-voltage conversion unit; 83-charging unit; 831-wireless charging unit; 84-battery protection unit.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention provides a touch control circuit for use in a desk lamp. The touch control circuit includes:

[0037] A plurality of touch switches 1, each of which is configured to generate corresponding LED touch control signals when triggered by a user, wherein the touch control signals include a reading mode control signal, a working mode control signal, a brightness adjustment control signal, and a color temperature adjustment control signal;

[0038] A main control unit 2, wherein a signal receiving end of the main control unit 2 is electrically connected to the touch switch 1, and is configured to output a corresponding LED control signal according to a corresponding LED touch control signal;

[0039] An LED driving circuit 3, wherein the first end of the LED driving circuit 3 is electrically connected to the adjustment signal output end of the main control unit 2, and the first end of the LED driving circuit 3 is used to be electrically connected to the LED lamp 4, and is used to receive and drive the LED lamp 4 to work according to the LED control signal sent by the main control unit 2.

[0040] In this embodiment, the plurality of touch switches 1 can be configured as one or more of a resistive touch switch 1, a capacitive touch switch 1, and a piezoelectric touch switch 1; the main control unit 2 can be configured as, for example, an MCU (Microcontroller Unit), a DSP (Digital Signal Process, a digital signal processing chip), an FPGA (Field Programmable Gate Array, a programmable logic gate array chip), such as an SOC (System On Chip, system-level chip) etc. for implementation; the LED driving circuit 3 can be configured to drive two kinds of LEDs of cold and warm tones through a constant current driving circuit, and after receiving the PWM signal modulated by the main control unit 2, the circuit controls the color temperature and brightness state of the LED lamp 4 for implementation; when the touch switch 1 obtains the touch control signal triggered by the user, the main control unit 2 modulates the PWM signal according to the received reading mode control signal or working mode control signal or brightness adjustment control signal, so as to adjust the color temperature and brightness of the LED lamp 4 of the LED driving circuit 3 alone or according to the set reading mode or the set working mode, wherein the reading mode and the working mode are modes with fixed color temperature values and brightness values pre-set by the main control unit 2, which can be quickly switched and adjusted according to the actual needs and usage scenarios of the user, thereby providing the user with a more comfortable and convenient lighting experience.

[0041] Specifically, the LED driving circuit 3 includes a power input terminal, an inductor L1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first LED lamp LED1, a second LED lamp LED2, a first capacitor C1, a second capacitor C2, a first transistor Q1, a second transistor Q2, a third transistor Q3, a first diode D1 and a constant current driving chip U1;

[0042] Wherein, the first end of the inductor L1 is electrically connected to the power input end and the third end of the constant current driver chip U1, the second end of the inductor L1 is electrically connected to the drain of the first transistor Q1 and the anode of the first diode D1, the cathode of the first diode D1 is electrically connected to the first end of the first capacitor C1, the first end of the second capacitor C2, the anode of the first LED lamp LED1 and the anode of the second LED lamp LED2, respectively, the second end of the first capacitor C1 and the second end of the second capacitor C2 are grounded, the cathode of the first LED lamp LED1 is electrically connected to the drain of the second transistor Q2, the gate of the second transistor Q2 is electrically connected to the first end of the third resistor R3 and the adjustment signal output end of the main control unit 2, the second end of the third resistor R3 is grounded, and the cathode of the second LED lamp LED2 is electrically connected to the drain of the third transistor Q3. The gate of the third transistor Q3 is electrically connected to the first end of the fourth resistor R4 and the adjustment signal output end of the main control unit 2, the second end of the fourth resistor R4 is grounded, the source of the third transistor Q3 and the source of the second transistor Q2 are electrically connected to the first end of the fifth resistor R5 and the fifth end of the constant current driver chip U1 respectively, the second end of the fifth resistor R5 is grounded, the fourth end of the constant current driver chip U1 is electrically connected to the adjustment signal output end of the main control unit 2 and the first end of the first resistor R1, the second end of the first resistor R1 is grounded, the second end of the constant current driver chip U1 is grounded, the first end of the constant current driver chip U1 is electrically connected to the gate of the first transistor Q1, the source of the first transistor Q1 is electrically connected to the first end of the second resistor R2 and the second end of the constant current driver chip U1, and the second end of the second resistor R2 is grounded.

[0043] With such a configuration, the power supply voltage input to the power input end of the LED driving circuit 3 can be provided after being stepped down by the battery 81 through a linear regulator, or provided after an external power supply is connected to a power line in conjunction with a step-down circuit and a rectifier circuit, or provided after an external power supply is connected to a USB line and powered by a power management chip for power control and protection. The inductor adjusts the power supply voltage at the power input end to provide a stable working voltage for multiple LED lamps. The constant current driving chip U1 is used to provide a stable working current for multiple LED lamps. In actual use, the first LED lamp LED1 and the second LED lamp LED2 can be set to one or more. When the main control unit 2 controls the operation of the LED driving circuit 3, the output level of the constant current driving chip U1 is controlled to control the first transistor Q1 to be turned on, and the LED driving circuit 3 forms a loop. At the same time, the main control unit 2 outputs a modulated PWM signal to the second transistor Q2 and the third transistor Q3. The second transistor Q2 and the third transistor Q3 are both turned on, and the multiple LED lamps display corresponding color temperature and brightness according to the modulated PWM signal.

[0044] In one embodiment, the touch switch 1 is further configured to generate a corresponding time adjustment touch signal upon being triggered by a long press by the user, and to generate a corresponding time confirmation touch signal upon being triggered by a short press by the user, and the touch control circuit further includes:

[0045] A time control unit 5, wherein the signal receiving end of the time control unit 5 is electrically connected to the touch switch 1, and the signal output end of the time control unit 5 is electrically connected to the digital tube 6, for receiving the corresponding time adjustment touch signal to adjust the time information displayed on the digital tube 6, and confirming the time information by receiving the corresponding time confirmation touch signal.

[0046] In this embodiment, the time control unit 5 can adopt TM1637 chip or TM1638, and the time information is specifically the clock information that can display the clock in the digital tube 6 and the minute information that displays the minute. Among the multiple touch switches 1, one of the touch switches 1 can be set to be able to be long-pressed to trigger the generation of a clock adjustment touch signal that can adjust the clock displayed on the digital tube 6, and the touch switch 1 that is triggered by a short press by the user to generate a corresponding clock confirmation touch signal, and another touch switch 1 can be set to be able to be long-pressed to trigger the generation of a corresponding minute adjustment touch signal, and the touch switch 1 that is triggered by a short press by the user to generate a corresponding minute confirmation touch signal, so as to facilitate the user to quickly adjust the time information displayed on the digital tube 6.

[0047] Specifically, for example, one of the touch switches 1 is set as the clock adjustment touch switch 1, and the other touch switch 1 is set as the minute adjustment touch switch 1. When the user long presses the clock adjustment touch switch 1, the clock information displayed in the digital tube 6 increases in sequence with a cycle of 0 to 24 hours, and when the user short presses the clock adjustment touch switch 1, the modification of the clock information of the digital tube 6 is confirmed; or when the user long presses the minute adjustment touch switch 1, the minute information displayed in the digital tube 6 increases in sequence with a cycle of 0 to 60 minutes, and when the user short presses the minute adjustment touch switch 1, the modification of the minute information of the digital tube 6 is confirmed.

[0048] In one embodiment, the touch switch 1 is further configured to generate a corresponding timed touch control signal upon user triggering, the main control unit 2 is further configured to generate a timer 7 start control signal based on the received timed touch control signal, and the clock control unit further includes:

[0049] Timer 7, the timer 7 is electrically connected to the clock signal input end of the time control unit 5, and is used to control the timer 7 to generate and send a timing signal when the time control unit 5 receives the timer 7 start control signal, so as to control the time control unit 5 to stop the desk lamp from working after the timing is completed.

[0050] In this embodiment, the timer 7 can be implemented by the RTC circuit built into the time control unit 5 or an external timing chip. Specifically, when one of the multiple touch switches 1 is set as a timing touch switch 1, when the user triggers the timing touch switch 1, the main control unit 2 generates a timer 7 start control signal through the received timing touch control signal to control the RTC circuit built into the time control unit 5 to generate and send a timing time signal. At this time, the time control unit 5 starts countdown according to the timing time signal, and controls the digital tube 6 to display the remaining timing time. After the countdown is completed, the time control unit 5 controls the main control unit 2 to stop the LED light from working.

[0051] In one embodiment, the touch control circuit further includes:

[0052] The power supply unit 8 has a power output terminal electrically connected to the power input terminal of the main control unit 2, the power input terminal of the time control unit 5 and the power input terminal of the LED drive circuit 3 for providing electrical energy.

[0053] The power supply unit 8 can be realized by reducing the voltage through a linear regulator equipped with a battery 81, or by connecting an external power supply to a power line and cooperating with a step-down circuit and a rectifier circuit, or by connecting an external power supply to a USB line and performing power supply control and protection through a power management chip, thereby providing power for the touch control circuit.

[0054] In one embodiment, the power supply unit 8 includes:

[0055] Battery 81, used for outputting battery 81 voltage;

[0056] A voltage conversion unit, wherein the power input end of the voltage conversion unit is electrically connected to the power output end of the battery 81, and the power output end of the voltage conversion unit 82 is electrically connected to the power input end of the main control unit 2, the power input end of the LED drive circuit 3 and the power input end of the time control unit 5, respectively, and is used to convert the voltage of the battery 81 into an operating voltage for use by the main control unit 2, the LED drive circuit 3 and the time control unit 5.

[0057] In this embodiment, the battery 81 can be implemented as a nickel-cadmium battery 81, a nickel-metal hydride battery 81, a lithium-ion battery 81, a lead-acid battery 81, or a lithium-iron battery 81. The voltage conversion unit can be implemented by a power management chip or a linear regulator. To ensure the stability and safety of the power supply, the voltage conversion unit may also include overvoltage protection, overcurrent protection, and short-circuit protection functions. In addition, to further improve energy efficiency, the voltage conversion unit can use synchronous rectification technology to reduce energy loss.

[0058] In one embodiment, the power supply unit 8 further includes:

[0059] The charging unit 83 has a power output terminal electrically connected to the positive electrode of the battery 81 for connecting to an external power source; the charging unit 83 is also used to charge the battery 81 by converting the external power voltage into a charging voltage.

[0060] In this embodiment, the charging unit 83 can be configured to charge the battery 81 in one or more of the following ways: USB charging, AC adapter charging, and wireless charging. The USB charging method has wide compatibility and convenience. Users can use a common USB power cable to connect to an external power source such as a computer, a mobile power supply, or other USB chargers to charge the battery 81. In addition, to improve charging efficiency and safety, the charging unit 83 has a built-in charging management chip that can automatically adjust the charging current and voltage according to the current state of the battery 81, thereby achieving fast and safe charging. On the other hand, the AC adapter charging method is suitable for scenarios that require higher power input. Through a dedicated AC adapter, users can convert the AC power from a household power outlet into DC power suitable for charging the battery 81. To ensure the safety of the charging process, the AC adapter is designed with overvoltage, overcurrent, short circuit, and overheating protection functions, thereby providing stable charging while maximizing the safety of the battery 81 and the device.

[0061] To sum up, the power supply unit 8 in this embodiment not only improves the convenience of use of the device by integrating the battery 81, the charging unit 83 and the power management function, but also ensures the efficient and safe charging of the battery 81, further improving the stability of the touch control circuit and the user experience.

[0062] In one embodiment, the charging unit 83 includes:

[0063] A wireless charging unit 831 is provided with a receiving coil. The power output end of the wireless charging unit 831 is electrically connected to the positive pole of the battery 81. The wireless charging unit 831 is used to receive the magnetic flux emitted by an external wireless transmitting device, and then generate charging power according to the magnetic flux through the receiving coil to charge the battery 81.

[0064] In this embodiment, when the charging unit 83 is provided with a wireless charging unit 831, the wireless transmitting device can transmit magnetic flux by integrating a wireless charging transmitting chip such as (CWT500), and the wireless charging unit 831 is provided with a wireless charging receiving chip (such as CWR500). The wireless charging receiving chip receives the magnetic flux through a built-in receiving coil to generate charging power for charging the battery 81.

[0065] In one embodiment, the power supply unit 8 further includes:

[0066] The battery protection unit 84 is electrically connected to the battery 81 and is used to prevent the battery 81 from being overcharged or over-discharged.

[0067] In this embodiment, the battery protection unit 84 can be implemented by providing a charging management chip (SIT8036 or IP2369) with overcharge and over-discharge functions, and thus can be implemented in conjunction with the wireless charging unit 831 and / or the wired charging unit 83. The charging management chip can effectively monitor the charging status of the battery 81 and ensure that the battery 81 operates within a safe voltage and current range. In this way, the battery protection unit 84 can work in conjunction with the wireless charging unit 831 and / or the wired charging unit to jointly ensure the stability and safety of the entire power supply system. This design not only improves the service life of the battery 81, but also greatly enhances the safety performance of the device, providing users with a more reliable and convenient user experience.

[0068] The present invention also provides a desk lamp, which includes a wireless transmitting device and a desk lamp. The specific structure of the desk lamp refers to the above embodiments. Since the desk lamp adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0069] The technical solution of the present invention is applied to a desk lamp by adopting a touch control circuit, the touch control circuit comprising a plurality of touch switches, the touch switches being configured to generate corresponding LED touch control signals when triggered by a user, the touch control signals comprising a reading mode control signal, a working mode control signal, a brightness adjustment control signal, and a color temperature adjustment control signal; a main control unit, the signal receiving end of the main control unit being electrically connected to the touch switches, and configured to output corresponding LED control signals according to the corresponding LED touch control signals; an LED driving circuit, the first end of the LED driving circuit being electrically connected to the adjustment signal output end of the main control unit, the first end of the LED driving circuit being electrically connected to the LED lamp, and configured to receive and drive the LED lamp according to the LED control signals sent by the main control unit. In this way, the touch control circuit enables the user to control the brightness or color temperature of the desk lamp individually through the plurality of touch switches, and to control the brightness and color temperature of the desk lamp through a set mode, thereby enabling the desk lamp to adjust the brightness and color temperature of the desk lamp individually or in a set mode, improving the convenience of user operation and making the desk lamp design more beautiful.

[0070] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A touch control circuit, applied to a desk lamp, characterized in that: The touch control circuit includes: A plurality of touch switches, each of which is configured to generate corresponding LED touch control signals when triggered by a user, wherein the touch control signals include a reading mode control signal, an operating mode control signal, a brightness adjustment control signal, and a color temperature adjustment control signal; a main control unit, wherein a signal receiving end of the main control unit is electrically connected to the touch switch, and is configured to output a corresponding LED control signal according to a corresponding LED touch control signal; An LED driving circuit, wherein the first end of the LED driving circuit is electrically connected to the adjustment signal output end of the main control unit, and the first end of the LED driving circuit is used to be electrically connected to the LED lamp, and is used to receive and drive the LED lamp to work according to the LED control signal sent by the main control unit.

2. The touch control circuit according to claim 1, wherein: The touch switch is further configured to generate a corresponding time adjustment touch signal upon being triggered by a long press of the user, and to generate a corresponding time confirmation touch signal upon being triggered by a short press of the user. The touch control circuit further comprises: A time control unit, wherein the signal receiving end of the time control unit is electrically connected to the touch switch, and the signal output end of the time control unit is electrically connected to the digital tube, for receiving the corresponding time adjustment touch signal to adjust the time information displayed on the digital tube, and confirming the time information by receiving the corresponding time confirmation touch signal.

3. The touch control circuit according to claim 1, wherein: The LED driving circuit includes a power input terminal, an inductor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first LED lamp, a second LED lamp, a first capacitor, a second capacitor, a first transistor, a second transistor, a third transistor, a first diode and a constant current driving chip; Wherein, the first end of the inductor is electrically connected to the power input end and the third end of the constant current driver chip, the second end of the inductor is electrically connected to the drain of the first transistor and the anode of the first diode, the cathode of the first diode is electrically connected to the first end of the first capacitor, the first end of the second capacitor, the anode of the first LED lamp and the anode of the second LED lamp respectively, the second end of the first capacitor and the second end of the second capacitor are grounded, the cathode of the first LED lamp is electrically connected to the drain of the second transistor, the gate of the second transistor is electrically connected to the first end of the third resistor and the adjustment signal output end of the main control unit, the second end of the third resistor is grounded, the cathode of the second LED lamp is electrically connected to the drain of the third transistor, The gate of the third transistor is electrically connected to the first end of the fourth resistor and the adjustment signal output end of the main control unit, the second end of the fourth resistor is grounded, the source of the third transistor and the source of the second transistor are electrically connected to the first end of the fifth resistor and the fifth end of the constant current driver chip respectively, the second end of the fifth resistor is grounded, the fourth end of the constant current driver chip is electrically connected to the adjustment signal output end of the main control unit and the first end of the first resistor, the second end of the first resistor is grounded, the second end of the constant current driver chip is grounded, the first end of the constant current driver chip is electrically connected to the gate of the first transistor, the source of the first transistor is electrically connected to the first end of the second resistor and the second end of the constant current driver chip, and the second end of the second resistor is grounded.

4. The touch control circuit according to claim 2, wherein: The touch switch is further configured to generate a corresponding timed touch control signal upon being triggered by a user, and the main control unit is further configured to generate a timer start control signal according to the received timed touch control signal. The time control unit further includes: A timer is electrically connected to the time signal input end of the time control unit, and is used to control the timer to generate and send a timing signal when the time control unit receives a timer start control signal, so as to control the time control unit to stop the desk lamp from working after the timing is completed.

5. The touch control circuit according to claim 2, wherein: The touch control circuit further includes: A power supply unit, wherein the power output end of the power supply unit is electrically connected to the power input end of the main control unit, the power input end of the time control unit and the power input end of the LED drive circuit, respectively, for providing electric energy.

6. The touch control circuit according to claim 5, wherein: The power supply unit includes: Battery, used to output battery voltage; A voltage conversion unit, wherein the power input end of the voltage conversion unit is electrically connected to the power output end of the battery, and the power output end of the voltage conversion unit is electrically connected to the power input end of the main control unit, the power input end of the LED drive circuit and the power input end of the time control unit, respectively, for converting the battery voltage into an operating voltage for use by the main control unit, the LED drive circuit and the time control unit.

7. The touch control circuit according to claim 6, wherein: The power supply unit further includes: A charging unit, wherein the power output end of the charging unit is electrically connected to the positive electrode of the battery and is used to connect to an external power source; the charging unit is also used to charge the battery by converting the external power supply voltage into a charging voltage.

8. The touch control circuit according to claim 7, wherein: The charging unit includes: A wireless charging unit is provided with a receiving coil, and the power output end of the wireless charging unit is electrically connected to the positive pole of the battery. The wireless charging unit is used to receive magnetic flux emitted by an external wireless transmitting device and generate charging power according to the magnetic flux through the receiving coil to charge the battery.

9. The touch control circuit according to claim 7, wherein: The power supply unit further includes: A battery protection unit is electrically connected to the battery and is used to prevent the battery from being overcharged or over-discharged.

10. A desk lamp, characterized in that: The desk lamp comprises the touch control circuit and wireless transmitting device according to any one of claims 1 to 9.

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