CN217721527U - Desk lamp regulating circuit and eye-protecting desk lamp - Google Patents
Desk lamp regulating circuit and eye-protecting desk lamp Download PDFInfo
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- CN217721527U CN217721527U CN202221225807.1U CN202221225807U CN217721527U CN 217721527 U CN217721527 U CN 217721527U CN 202221225807 U CN202221225807 U CN 202221225807U CN 217721527 U CN217721527 U CN 217721527U
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Abstract
The utility model relates to a light adjustment technical field provides a desk lamp regulating circuit and eyeshield desk lamp, including power module, PWM generation module and colour temperature regulating circuit, colour temperature regulating circuit includes first LED lamp, first MOS pipe, second LED lamp and second MOS pipe, power module's first output respectively with the first end of first LED lamp and second LED lamp is connected, the second output respectively with the drain electrode of first MOS pipe and second MOS pipe is connected, the source electrode of first MOS pipe with the second end of first LED lamp is connected, the grid with the first output of PWM generation module is connected to adjust the light of first LED lamp, first LED lamp is cold color LED lamp, the source electrode of second MOS pipe with the second end of second LED lamp is connected, the grid with the second output of PWM generation module is connected, in order to adjust the light of second LED lamp, the second LED lamp is warm color LED lamp; the utility model discloses can realize linear, the accurate regulation to the desk lamp colour temperature.
Description
Technical Field
The utility model relates to a light adjustment technical field particularly, relates to a desk lamp regulating circuit and eyeshield desk lamp.
Background
The desk lamp is widely applied to the life of people as a household electric appliance, and generally needs light rays with different color temperatures according to the habit of a user and the condition of indoor light rays so as to make eyes more comfortable and protect eyes, most of color temperature adjusting circuits of the traditional desk lamp adopt a plurality of lamp tubes with different color temperatures to be arranged in a lamp shell side by side, and adopt a plurality of switches corresponding to the lamp tubes for control, or adopt a knob switch, and each gear of the knob switch controls one lamp tube with different color temperatures so as to realize the adjustment of the color temperature of the desk lamp; however, when the desk lamp using the color temperature adjusting circuit is adjusted, the color temperature of the fixed gear can only be switched according to the set lamp tube, and the color temperature of the desk lamp can not be adjusted linearly and accurately, so that the requirements of users cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem how to provide a desk lamp regulating circuit that can linear, accurate regulation desk lamp colour temperature.
In order to solve the above problem, the utility model provides a desk lamp regulating circuit, include: power module, PWM take place module and colour temperature regulating circuit, colour temperature regulating circuit includes first LED lamp, first MOS pipe, second LED lamp and second MOS pipe, power module's first output respectively with the first end of first LED lamp and second LED lamp is connected, the second output respectively with the drain electrode of first MOS pipe and second MOS pipe is connected, the source electrode of first MOS pipe with the second end of first LED lamp is connected, the grid with the first output of PWM emergence module is connected to adjust the light of first LED lamp, first LED lamp is cold color LED lamp, the source electrode of second MOS pipe with the second end of second LED lamp is connected, the grid with the second output of PWM emergence module is connected, with the light of adjusting the second LED lamp, the second LED lamp is warm look LED lamp, first LED lamp and second LED lamp set up side by side in the lamp body.
Furthermore, the power module comprises a power supply circuit and a power supply adjusting circuit, the controlled end of the power supply adjusting circuit is connected with the third output end of the PWM generation module, the input end of the power supply adjusting circuit is connected with the power supply circuit, and the output end of the power supply adjusting circuit is connected with the color temperature adjusting circuit and used for adjusting the input power supply of the color temperature adjusting circuit.
Furthermore, the power supply regulating circuit comprises a power supply management chip, a third MOS transistor and a rectifier diode, wherein a controlled end of the power supply management chip is connected with a third output end of the PWM generation module, an output end of the power supply management chip is connected with a gate of the third MOS transistor, and a source of the third MOS transistor is connected with an output end of the power supply circuit and an input end of the rectifier diode respectively.
Furthermore, the power supply regulating circuit further comprises a first filter capacitor bank and a first common-mode inductor, a first end of the first filter capacitor bank is connected with an output end of the rectifier diode, a second end of the first filter capacitor bank is grounded, an input end of the first common-mode inductor is connected with an output end of the rectifier diode, and an output end of the first common-mode inductor is connected with the color temperature regulating circuit.
Furthermore, the power supply circuit comprises a power supply interface, a first protective pipe, a second common-mode inductor and a second filter capacitor set, wherein the input end of the power supply interface is suitable for being connected with an external power supply, the output end of the power supply interface is connected with the input end of the second common-mode inductor through the first protective pipe, the output end of the second common-mode inductor is connected with the power supply adjusting circuit, and the second filter capacitor set is connected with the output end of the second common-mode inductor and used for filtering the output voltage of the output end of the second common-mode inductor.
Compared with the prior art, the beneficial effects of the utility model are that:
when the LED lamp is used, the first output end of the PWM generating module sends a PWM signal to the first MOS tube, the first MOS tube is conducted, at the moment, two ends of the first LED lamp are connected with the power supply module, the first LED lamp is electrified and lightened, and the conduction angle of the first MOS tube can be changed by adjusting the duty ratio of the PWM signal sent by the first output end of the PWM generating module, so that the current passing through the first LED lamp is changed, and the brightness of the first LED lamp is changed; a second output end of the PWM generating module sends a PWM signal to a second MOS tube, the second MOS tube is conducted, at the moment, two ends of a second LED lamp are connected with the power supply module, the second LED lamp is electrified and lightened, and the conduction angle of the second MOS tube can be changed by adjusting the duty ratio of the PWM signal sent by a second output end of the PWM generating module, so that the current passing through the second LED lamp is changed, and the brightness of the second LED lamp is changed; the first LED lamp and the second LED lamp are arranged in the lamp shell side by side and emit light together, wherein the first LED lamp is a cold color LED lamp, the second LED lamp is a warm color LED lamp, when the color temperature of the desk lamp needs to be changed, the duty ratios of PWM signals emitted by the PWM generation module to the first LED lamp and the second LED lamp can be respectively adjusted by only changing the duty ratios of the PWM signals emitted by the PWM generation module to the cold color LED lamp and the warm color LED lamp, and further the color temperature of the desk lamp can be changed.
The utility model provides an eyeshield desk lamp, including the lamp body and as above-mentioned arbitrary desk lamp regulating circuit.
Therefore, the eye protection desk lamp comprises the desk lamp adjusting circuit, so that the eye protection desk lamp at least has all the technical effects of the desk lamp adjusting circuit, and the details are not repeated.
Furthermore, the PWM generation module comprises a main control circuit and a man-machine interaction circuit, the man-machine interaction circuit is connected with the input end of the main control circuit, and the PWM output end of the main control circuit is respectively connected with the power supply module and the color temperature adjusting circuit so as to send PWM signals to the power supply module and the color temperature adjusting circuit.
Furthermore, the man-machine interaction circuit comprises a touch control circuit and a touch key circuit, wherein the input end of the touch control circuit is connected with the touch key circuit, and the output end of the touch control circuit is connected with the main control circuit so as to transmit the control instruction received by the touch key circuit to the main control circuit.
Furthermore, the eye protection desk lamp further comprises a human body microwave module, wherein the human body microwave module is connected with the main control circuit and used for transmitting the human body approaching information to the main control circuit.
Furthermore, the eye-protection desk lamp further comprises a light intensity sensor, and the light intensity sensor is connected with the main control circuit and used for transmitting the collected ambient light intensity information to the main control circuit.
Drawings
Fig. 1 is a schematic diagram of a schematic structure of a color temperature adjusting circuit according to the present invention;
fig. 2 is a schematic diagram of the principle structure of the power supply regulating circuit of the present invention;
fig. 3 is a schematic diagram of the principle structure of the power supply circuit of the present invention;
fig. 4 is a schematic diagram of the principle structure of the main control circuit of the present invention;
fig. 5 is a schematic diagram of the schematic structure of the touch control circuit of the present invention;
fig. 6 is a schematic diagram of the touch key circuit according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the terms "an example," "one example," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or implementation is included in at least one example or implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.
As shown in fig. 1, there is provided a table lamp adjusting circuit, including: power module, PWM generate module and colour temperature regulating circuit, colour temperature regulating circuit includes first LED lamp, first MOS pipe, second LED lamp and second MOS pipe, power module's first output respectively with the first end of first LED lamp and second LED lamp is connected, the second output respectively with the drain electrode of first MOS pipe and second MOS pipe is connected, the source electrode of first MOS pipe with the second end of first LED lamp is connected, the grid with the first output of PWM generate module is connected to adjust the light of first LED lamp, first LED lamp is cold color LED lamp, the source electrode of second MOS pipe with the second end of second LED lamp is connected, the grid with the second output of PWM generate module is connected to adjust the light of second LED lamp, the second LED lamp is warm look LED lamp, first LED lamp and second LED lamp set up side by side in the lamp body.
The power module is used for providing power for the color temperature adjusting circuit, the color temperature adjusting circuit is used for adjusting the color temperature of the desk lamp, and the PWM sending module is used for sending different PWM signals to the color temperature adjusting circuit; when the LED lamp is used, the first output end of the PWM generating module sends a PWM signal to the first MOS tube Q2, the first MOS tube Q2 is conducted, at the moment, two ends of the first LED lamp LED1 are connected with the power supply module, the first LED lamp LED1 is electrified and lightened, the conduction angle of the first MOS tube Q2 can be changed by adjusting the duty ratio of the PWM signal sent by the first output end of the PWM generating module, so that the current passing through the first LED lamp LED1 is changed, and the brightness of the first LED lamp LED1 is changed; a second output end of the PWM generating module sends a PWM signal to a second MOS tube Q3, the second MOS tube Q3 is conducted, at the moment, two ends of a second LED lamp LED2 are connected with the power module, the second LED lamp LED2 is electrified and lightened, and the conduction angle of the second MOS tube Q3 can be changed by adjusting the duty ratio of the PWM signal sent by the second output end of the PWM generating module, so that the current passing through the second LED lamp LED2 is changed, and the brightness of the second LED lamp LED2 is changed; the first LED lamp LED1 and the second LED lamp LED2 are arranged in the lamp housing side by side and emit light together, wherein the first LED lamp LED1 is a cold color LED lamp, the second LED lamp LED2 is a warm color LED lamp, when the color temperature of the desk lamp needs to be changed, the ratio of the luminance of the cold color LED lamp and the luminance of the warm color LED lamp can be respectively adjusted by only changing the duty ratio of PWM signals emitted by the PWM generating module to the first LED lamp LED1 and the second LED lamp LED2 respectively, and then the color temperature of the desk lamp can be changed.
The utility model discloses an embodiment, power module includes supply circuit and power supply regulating circuit, power supply regulating circuit's controlled end with the third output of module is taken place to PWM connects, the input with supply circuit connects, the output with colour temperature regulating circuit for adjust colour temperature regulating circuit's input power.
It should be noted that, as shown in fig. 2, the power supply circuit provides a power supply for the color temperature adjusting circuit, the power supply adjusting circuit is connected to the power supply circuit, and the power supply output by the power supply circuit can be adjusted, so that the adjustment of the input power supply of the color temperature adjusting circuit can be realized, the color temperature is not required to be changed, and only the light intensity is changed, the input power supply of the color temperature adjusting circuit is adjusted by the power supply adjusting circuit, so that the brightness of the first LED lamp LED1 and the second LED lamp LED2 can be integrally changed, and the brightness of the desk lamp can be adjusted.
The utility model discloses an in one embodiment, power supply regulating circuit includes power management chip, third MOS pipe and rectifier diode, power management chip's controlled end with the third output of PWM generation module is connected, the output with the grid of third MOS pipe is connected, the source electrode of third MOS pipe respectively with power supply circuit's output with rectifier diode's input is connected.
It should be noted that, as shown in fig. 2, the power output of the power supply circuit is rectified by the rectifier diode D2 and then output to the color temperature adjusting circuit, the duty ratio is obtained by changing the PWM signal output by the third output terminal of the PWM generating module, the magnitude of the control signal output by the power management chip U1 to the third MOS transistor Q1 can be changed, the model of the power management chip U1 can adopt SY7711, when the third MOS transistor Q1 is turned on, the output current of the power supply circuit can be shunted through the third MOS transistor Q1, the power output of the power supply circuit to the color temperature adjusting circuit is changed, when the control signal output by the power management chip U1 to the third MOS transistor Q1 is changed, the conduction angle of the third MOS transistor Q1 is changed, so that the current change through the third MOS transistor Q1 is performed, further the linear change of the output of the power supply circuit is achieved, that the linear change of the power supply of the color temperature adjusting circuit is also achieved, and the overall adjustment of the brightness of the desk lamp is achieved.
The utility model discloses an in one embodiment, power supply regulating circuit still includes first filter capacitor group and first common mode inductance, the first end of first filter capacitor group with rectifier diode's output is connected, and second end ground connection, the input of first common mode inductance with rectifier diode's output is connected, the output with colour temperature regulating circuit connects.
It should be noted that, as shown in fig. 2, in this embodiment, the first filter capacitor bank includes filter capacitors C8 and EC3 connected in parallel, the first filter capacitor bank is connected to an output end of the rectifier diode D2, and is configured to filter a power source output to the color temperature adjustment circuit, so as to filter a noise power source and improve power supply stability, an input end of the first common mode inductor Z1 is connected to an output end of the rectifier diode D2, and an output end of the first common mode inductor Z is connected to the color temperature adjustment circuit, so as to filter a common mode current output to the color temperature adjustment circuit, and reduce power interference.
The utility model discloses an embodiment, supply circuit includes power supply interface, first insurance pipe, second common mode inductance and second filter capacitor group, power supply interface's input is suitable for connecting external power source, and the output passes through first insurance pipe the input of second common mode inductance, the output of second common mode inductance with power conditioning circuit connects, second filter capacitor group with the output of second common mode inductance is connected for output voltage to the output of second common mode inductance filters.
It should be noted that, as shown in fig. 3, an external power source is output to an input end of the second common mode inductor L2 through the power supply interface P2 and the first fuse F1, where the first fuse F1 may be fused during overcurrent, so as to protect the circuit, a common mode signal in the external power source is removed by the second common mode inductor L2, and electromagnetic interference of the power source to the surrounding environment is prevented, the second filter capacitor bank includes filter capacitors EC1 and C56 connected in parallel, and the second filter capacitor bank is connected to an output end of the second common mode inductor L2, so as to filter a clutter signal in the input voltage.
In another embodiment of the present invention, an eye-protecting desk lamp is provided, which comprises a lamp housing and a desk lamp adjusting circuit as described in the previous embodiment.
It should be noted that the desk lamp of this embodiment can include strutting arrangement and the lamp body that is located the strutting arrangement tip, desk lamp regulating circuit can set up inside strutting arrangement, first LED lamp and second LED lamp set up side by side in the lamp body and are connected with desk lamp regulating circuit electricity, in order to throw light on, the eyeshield desk lamp of this embodiment has adopted foretell desk lamp regulating circuit, therefore, the eyeshield desk lamp can realize the electrodeless linear regulation to the desk lamp colour temperature, thereby according to user's demand, the colour temperature of linear change light, so that people's eye is more comfortable, protect user's eyes.
The utility model discloses an embodiment, PWM generation module includes master control circuit and man-machine interaction circuit, man-machine interaction circuit with master control circuit's input is connected, master control circuit's PWM output respectively with power module and colour temperature regulating circuit connect, so that it is right power module and colour temperature regulating circuit send PWM signal.
It should be noted that, in this embodiment, the PWM generation module includes a main control circuit and a human-computer interaction circuit, a PWM signal is sent by the main control circuit, a user selects the adjustment of the color temperature and the brightness through the human-computer interaction circuit, the human-computer interaction circuit sends a control instruction to the main control circuit, the main control circuit sends a required PWM signal to the color temperature adjustment circuit or the power adjustment circuit according to the selection of the user, and performs linear adjustment of the color temperature and the brightness of the desk lamp to meet the user requirement, wherein, as shown in fig. 4, the main control circuit adopts a main control chip U5 whose signal is SH79F326M, the main control chip U5 is further connected with an indicator light LED19 and a debugging interface CN3, the indicator light LED19 is used for indicating the operating state of the main control chip U5, and the internal setting of the main control chip U5 can be changed through the debugging interface CN 3.
The utility model discloses an in the embodiment, the human-computer interaction circuit includes touch control circuit and touch key circuit, touch control circuit's input with touch key circuit connects, the output with master control circuit connects, in order to incite somebody to action touch key circuit received control command transmits for master control circuit.
It should be noted that, as shown in fig. 5, the touch control circuit adopts a touch control chip U6 with a model number of CTT-CY8C4014LQI-422, and the touch control chip U6 may be connected to a plurality of touch keys, as shown in fig. 6, the touch key circuit includes a plurality of touch keys, each touch key is connected to the touch control chip U6, and when a user uses a touch key, the touch key circuit receives a touch key action signal and transmits a control instruction corresponding to the touch key action signal to the main control circuit.
In an embodiment of the present invention, the eye-protecting desk lamp further comprises a human body microwave module, the human body microwave module is connected to the main control circuit, and is used for transmitting the human body approaching information to the main control circuit.
It should be noted that, in this embodiment, human microwave module is an electronic component that whether someone is close to through sending radar microwave and accepting the microwave judgement that reflects back, it is far away to have a detection distance, the coverage area is wide, the interference killing feature is strong, the advantage that detectivity is high, when the user is close to, human microwave module has the user to be close to through the microwave induction of the human reflection of user, at this moment, human microwave module is close to information transfer for master control circuit with the human body, by master control circuit control desk lamp regulating circuit, in order to drive the desk lamp and light, it is more convenient to use. The human body microwave module may be a microwave sensor, such as a radar sensor, or may also be an infrared sensor, which is not limited herein.
In an embodiment of the present invention, the eye-protecting desk lamp further comprises a light intensity sensor, the light intensity sensor is connected to the main control circuit, and is used for transmitting the collected ambient light intensity information to the main control circuit.
It should be noted that, in this embodiment, the adjustment of the color temperature and the brightness of the eye-protecting desk lamp adopts a control mode of automatic adjustment according to the ambient light intensity, the light intensity sensor transmits the collected ambient light intensity information to the main control circuit, the main control circuit sends a suitable PWM signal to the desk lamp adjusting circuit according to the ambient light intensity information and the setting, when the ambient light intensity changes, the main control circuit changes the duty ratio of the PWM signal sent to the desk lamp adjusting circuit, and adjusts the brightness and the color temperature of the light sent by the desk lamp, so as to better adapt to the requirements of human eyes of the user; when the human body microwave module senses that a user is close to the desk lamp, the main control circuit can control the desk lamp adjusting circuit to emit light rays suitable for the ambient light conditions by combining the ambient light intensity information at the moment, and the eyes of the user are better protected.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.
Claims (10)
1. A table lamp adjustment circuit, comprising: power module, PWM take place module and colour temperature regulating circuit, colour temperature regulating circuit includes first LED lamp, first MOS pipe, second LED lamp and second MOS pipe, power module's first output respectively with the first end of first LED lamp and second LED lamp is connected, the second output respectively with the drain electrode of first MOS pipe and second MOS pipe is connected, the source electrode of first MOS pipe with the second end of first LED lamp is connected, the grid with the first output of PWM emergence module is connected to adjust the light of first LED lamp, first LED lamp is cold color LED lamp, the source electrode of second MOS pipe with the second end of second LED lamp is connected, the grid with the second output of PWM emergence module is connected, with the light of adjusting the second LED lamp, the second LED lamp is warm look LED lamp, first LED lamp and second LED lamp set up side by side in the lamp body.
2. The desk lamp adjusting circuit of claim 1, wherein the power supply module comprises a power supply circuit and a power supply adjusting circuit, a controlled terminal of the power supply adjusting circuit is connected with a third output terminal of the PWM generating module, an input terminal of the power supply adjusting circuit is connected with the power supply circuit, and an output terminal of the power supply adjusting circuit is connected with the color temperature adjusting circuit for adjusting an input power supply of the color temperature adjusting circuit.
3. The desk lamp adjusting circuit of claim 2, wherein the power supply adjusting circuit comprises a power management chip, a third MOS transistor and a rectifying diode, a controlled end of the power management chip is connected with a third output end of the PWM generation module, an output end of the power management chip is connected with a grid electrode of the third MOS transistor, and a source electrode of the third MOS transistor is respectively connected with an output end of the power supply circuit and an input end of the rectifying diode.
4. The desk lamp adjusting circuit of claim 3, wherein the power supply adjusting circuit further comprises a first filter capacitor bank and a first common mode inductor, a first end of the first filter capacitor bank is connected to an output end of the rectifier diode, a second end of the first filter capacitor bank is grounded, an input end of the first common mode inductor is connected to an output end of the rectifier diode, and an output end of the first common mode inductor is connected to the color temperature adjusting circuit.
5. The desk lamp adjusting circuit according to claim 2, wherein the power supply circuit comprises a power supply interface, a first fuse, a second common mode inductor, and a second filter capacitor set, an input end of the power supply interface is adapted to be connected to an external power source, an output end of the power supply interface is connected to an input end of the second common mode inductor through the first fuse, an output end of the second common mode inductor is connected to the power supply adjusting circuit, and the second filter capacitor set is connected to an output end of the second common mode inductor and is configured to filter an output voltage of the output end of the second common mode inductor.
6. An eye-protection desk lamp, which is characterized by comprising a lamp shell and a desk lamp adjusting circuit as claimed in any one of claims 2 to 5.
7. The eye-protecting desk lamp of claim 6, wherein the PWM generation module comprises a main control circuit and a man-machine interaction circuit, the man-machine interaction circuit is connected with an input end of the main control circuit, and a PWM output end of the main control circuit is respectively connected with the power module and the color temperature adjusting circuit so as to send PWM signals to the power module and the color temperature adjusting circuit.
8. The eye-protecting desk lamp of claim 7, wherein the human-computer interaction circuit comprises a touch control circuit and a touch key circuit, the input end of the touch control circuit is connected with the touch key circuit, and the output end of the touch control circuit is connected with the main control circuit, so as to transmit the control instruction received by the touch key circuit to the main control circuit.
9. The eye-protecting desk lamp of claim 7, further comprising a human body microwave module, wherein the human body microwave module is connected with the main control circuit and used for transmitting the human body approach information to the main control circuit.
10. The eye-protecting desk lamp of claim 7, further comprising a light intensity sensor connected to the main control circuit for transmitting the collected ambient light intensity information to the main control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225807.1U CN217721527U (en) | 2022-05-21 | 2022-05-21 | Desk lamp regulating circuit and eye-protecting desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225807.1U CN217721527U (en) | 2022-05-21 | 2022-05-21 | Desk lamp regulating circuit and eye-protecting desk lamp |
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| Publication Number | Publication Date |
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| CN217721527U true CN217721527U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221225807.1U Active CN217721527U (en) | 2022-05-21 | 2022-05-21 | Desk lamp regulating circuit and eye-protecting desk lamp |
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| Country | Link |
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| CN (1) | CN217721527U (en) |
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- 2022-05-21 CN CN202221225807.1U patent/CN217721527U/en active Active
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