An adaptive lighting device for a study desk and a study desk

Abstract

This utility model discloses an adaptive lighting device for a study desk and the study desk itself. The adaptive lighting device is installed on the bookshelf of the study desk and includes a long shell, a main light source module, a light detection sensor assembly, a projection light source module, and a control module. The main light source module, projection light source module, and control module are all housed within the long shell. The main light source module, light detection sensor assembly, and projection light source module are each connected to the control module. The light detection sensor assembly is used to detect the illuminance, color temperature, and blue light values ​​on the study desk surface in real time and transmit this data to the control module. The control module is used to control the on / off state of the main light source module and, based on the illuminance, color temperature, and blue light values ​​detected by the light detection sensor assembly, to control the working state of the projection light source module so that the illuminance, color temperature, and blue light values ​​on the desk surface meet preset thresholds. This utility model enables intelligent adaptive adjustment of the lighting parameters of the study desk.

Description

Technical Field

[0001] This utility model relates to the field of smart furniture technology, and in particular to an adaptive lighting device for a study desk and a study desk. Background Technology

[0002] With increasing emphasis on family education, study desks have become a core piece of equipment for children's daily learning, and lighting conditions directly affect learning efficiency and eye health. Currently, most study desk lighting solutions on the market have the following shortcomings:

[0003] 1. Fixed lighting parameters: The brightness and color temperature of traditional table lamps or bookshelf integrated lamps cannot be adjusted with changes in ambient light, which can easily lead to insufficient illuminance when the ambient light is too strong and glare when the ambient light is too weak.

[0004] 2. Requires manual interaction: Most lights rely on manual switching or adjustment, which is inconvenient for children to operate and can easily lead to energy waste due to forgetting to turn them off;

[0005] 3. Uneven light source coverage: The lamps are installed in an unreasonable position, and shadows often exist in the deep areas of the bookshelf or the edge of the table, which affects the learning experience;

[0006] 4. Limited detection dimensions: Some so-called "smart" lamps only use a single photosensitive sensor to detect brightness, which cannot take into account key eye protection parameters such as color temperature and blue light content, making it difficult to meet the eye protection needs of children who study for long periods of time.

[0007] To address the aforementioned issues, existing improvement solutions (such as voice control and touch control) still require active user intervention and do not solve the core problem of multi-dimensional light parameter detection and precise adjustment. Therefore, there is an urgent need for a study desk lighting solution that requires no manual operation and can adapt to ambient light in multiple dimensions. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adaptive lighting device and a study desk. By integrating multiple components to work together, it can achieve intelligent adaptive adjustment of lighting parameters and solve problems such as fixed brightness, manual operation, and uneven light source.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] This utility model provides an adaptive lighting device for a study desk. The device is installed on the bookshelf of the study desk and includes a long, narrow housing, a main light source module, a light detection sensor assembly, a projection light source module, and a control module. The main light source module, projection light source module, and control module are all housed within the long, narrow housing. The main light source module, light detection sensor assembly, and projection light source module are each connected to the control module.

[0011] The light detection sensor assembly is used to detect the illuminance, color temperature and blue light values ​​on the desk in real time and transmit them to the control module.

[0012] The control module is used to control the opening and closing of the main light source module, and to control the working state of the projection light source module according to the illuminance value, color temperature value and blue light value detected by the light detection sensor component, so as to make the illuminance value, color temperature value and blue light value on the table meet the preset threshold.

[0013] Preferably, the control module includes a main control MCU, a PWM drive circuit, a signal input interface, a signal output interface, a power input interface, and a power conversion circuit.

[0014] The power input interface is connected to the input terminal of the power conversion circuit. The input terminal, signal input interface, signal output interface, and output terminal of the power conversion circuit of the PWM drive circuit are respectively connected to the main control MCU. The signal input interface is connected to the signal output terminal of the light detection sensor assembly. The signal output interface is connected to the signal input terminal of the projection light source module. The output terminal of the PWM drive circuit is connected to the main light source module.

[0015] Preferably, the light detection sensor assembly includes a brightness sensor, a color temperature sensor, and a blue light sensor, wherein the brightness sensor, color temperature sensor, and blue light sensor are respectively connected to the signal input interface of the control module, wherein,

[0016] The brightness sensor is used to detect the brightness value of the tabletop of the study desk in real time;

[0017] The color temperature sensor is used to detect the color temperature value of the light on the tabletop of the study desk in real time;

[0018] The blue light sensor is used to detect the blue light level on the desk in real time.

[0019] Preferably, the detection surfaces of the brightness sensor, color temperature sensor, and blue light sensor are all directly facing the center area of ​​the desk.

[0020] Preferably, the main light source module includes a full-spectrum LED light strip, a reflector, and a light-transmitting plate, wherein the full-spectrum LED light strip is connected to the output terminal of the PWM drive circuit of the control module.

[0021] The light-transmitting plate is disposed on the bottom surface of the elongated housing, and the full-spectrum LED light strip and the reflector are both disposed inside the elongated housing. The full-spectrum LED light strip is located on the inner side of the rear side wall of the elongated housing, and the reflector is located between the inner side of the rear side wall of the elongated housing and the full-spectrum LED light strip.

[0022] Preferably, the projection light source module includes an auxiliary light source and a DLP projection chip. The signal input terminal of the DLP projection chip is connected to the signal output interface of the control module, and the control terminal of the DLP projection chip is connected to the auxiliary light source. The DLP projection chip is used to adjust the light emitted by the auxiliary light source and reflect it onto the tabletop of the study desk.

[0023] Preferably, the auxiliary light source is a red, green, and blue tri-color LED light strip, which is located on the inner side of the front sidewall of the elongated housing.

[0024] Preferably, the red, blue, and green light adjusted by the DLP projection chip is mixed with the full-spectrum light emitted by the full-spectrum LED light strip at the light-transmitting plate to form mixed light, which is then projected onto the tabletop of the study desk.

[0025] Preferably, the brightness range of the auxiliary light source is 3000lm to 5000lm.

[0026] This utility model also provides a study desk, including a study desk body and a bookshelf disposed on the top of the study desk body, and also includes the study desk adaptive lighting device described in any of the above.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. Simultaneously detect three key parameters: brightness, color temperature, and blue light. Through coordinated adjustment of the main light source and the projection light source, ensure that the tabletop lighting environment always meets eye protection standards and adapts to different ambient light scenarios.

[0029] 2. The entire process from light parameter detection to lighting adjustment is automated, allowing children to enjoy suitable lighting without any interaction, thus solving the problems of inconvenience and energy waste from manual operation;

[0030] 3. The front and rear side wall light strip layout and the light-transmitting panel design ensure that there are no shadows in the entire area of ​​the table, effectively improving the uniformity of illumination and thus enhancing the learning experience;

[0031] 4. The design features four key elements: full-spectrum LED, low DC voltage, concealed LED beads, and blue light control, which are designed to protect children's eyesight and ensure safety during use, and are in line with children's physiological characteristics.

[0032] 5. Seamlessly integrated with the study desk and bookshelf, saving space, aesthetically pleasing and practical, avoiding the shortcomings of traditional desk lamps, and enhancing the competitiveness of study desk products.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0035] Figure 1 This is a circuit block diagram of an adaptive lighting device for a study desk in one embodiment of the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of a study desk in one embodiment of the present utility model. Detailed Implementation

[0037] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0038] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] like Figure 1-2 As shown, this utility model embodiment provides an adaptive lighting device for a study desk. The device is installed on the front side of the top plate 1011 of the bookshelf 101 of the study desk. It includes a long shell 1, a main light source module 2, a light detection sensor assembly 3, a projection light source module 4, and a control module 5. The main light source module 2, the projection light source module 4, and the control module 5 are all housed within the long shell 1. The main light source module 2, the light detection sensor assembly 3, and the projection light source module 4 are respectively connected to the control module 5.

[0044] The light detection sensor assembly 3 is used to detect the illuminance, color temperature and blue light values ​​on the tabletop 102 of the study desk in real time and transmit them to the control module 5.

[0045] The control module 5 is used to control the opening and closing of the main light source module 2, and to control the working state of the projection light source module 4 according to the illuminance value, color temperature value and blue light value detected by the light detection sensor component 3, so that the illuminance value, color temperature value and blue light value on the table 102 meet the preset threshold.

[0046] Specifically, in this embodiment, the adaptive lighting device for the study desk integrates a main light source module 2 to provide basic lighting through a long shell 1, a light detection sensor component 3 to collect ambient light data, a projection light source module 4 to supplement and adjust the lighting, and a control module 5 to achieve lighting adjustment and control. Each functional module establishes a signal connection with the control module 5. During use, the light detection sensor component 3 captures the illuminance, color temperature, and blue light values ​​on the desk 102 in real time and transmits the data to the control module 5. The control module 5 has built-in preset eye protection thresholds (e.g., brightness 200-750 lux, color temperature 4000-5000K, blue light content ≤0.4W / m²). 2 After comparing the real-time detection data with the threshold, the system controls the start and stop of the main light source module 2 (e.g., turning on the main light source when the ambient light is too dark) and adjusts the working state of the projection light source module 4 (e.g., reducing the proportion of blue light in the projection light source when the color temperature is too high), so that the light environment parameters of the table 102 meet the preset threshold.

[0047] The adaptive lighting device for the study desk in this embodiment breaks through the limitations of traditional lamps with "fixed parameters." Through real-time detection and dynamic adjustment, it adapts to changes in ambient light at different times (such as day / night) and in different scenarios (such as cloudy / sunny days). It eliminates the need for manual switching or adjustment by the user, solving the problem of "requiring manual interaction," and is especially suitable for children's independent use needs. It also detects three key parameters—brightness, color temperature, and blue light—overcoming the problem of "single detection dimension" and meeting the eye protection needs of children during long-term study. It is modularly integrated into the long shell 1 and can be directly installed on the study desk bookshelf 101 without occupying additional space on the desk 102, thus improving space utilization.

[0048] In some other embodiments, the adaptive lighting device for the study desk may also include a human body sensor 6, which is connected to the control module 5. The human body sensor 6 monitors whether someone is using the study desk. The control module 5 only controls the lighting device to start and enter the working state when the human body sensor 6 detects a person within a preset range (e.g., 0.1m to 2m) in front of the study desk.

[0049] Based on the previous embodiment, in some other embodiments, the adaptive lighting device for the study desk may further include a touch panel 7, which is connected to the control module 5. The touch panel 7 is equipped with a power switch and a human body sensor switch. When lighting is needed, the user can turn on the lighting device by touching the power switch. After the lighting device is turned on, it can perform adaptive dimming. After the power is turned on, when the user touches the human body sensor switch, the human body sensing function is activated. The control module 5 then controls the human body sensor 6 to monitor the status. Only when a person is detected within a preset range in front of the study desk will the lighting device be activated and enter the working state. If the person leaves the preset range of the study desk, the light will automatically turn off to save energy. When the user touches the human body sensor switch again, the human body sensing function will turn off, and the lighting device will automatically perform adaptive dimming.

[0050] In one embodiment, the control module 5 includes a main control MCU 51, a PWM drive circuit 52, a signal input interface 53, a signal output interface 54, a power input interface 55, and a power conversion circuit 56.

[0051] The power input interface 55 is connected to the input terminal of the power conversion circuit 56. The input terminal of the PWM drive circuit 52, the signal input interface 53, the signal output interface 54, and the output terminal of the power conversion circuit 56 are respectively connected to the main control MCU 51. The signal input interface 53 is connected to the signal output terminal of the light detection sensor component 3. The signal output interface 54 is connected to the signal input terminal of the projection light source module 4. The output terminal of the PWM drive circuit 52 is connected to the main light source module 2.

[0052] Specifically, in the control module 5 of this embodiment, after the power input interface 55 is connected to the mains power, the power conversion circuit 56 converts AC220V into DC voltage suitable for each component / module; the detection data of the light detection sensor component 3 is transmitted to the main control MCU 51 through the signal input interface 53. After analysis and comparison, the main control MCU 51 sends a brightness adjustment signal to the main light source module 2 through the PWM drive circuit 52, and sends a light color / brightness adjustment signal to the projection light source module 4 through the signal output interface 54, so as to ensure accurate transmission and execution of control commands.

[0053] Specifically, in this embodiment, the main control MCU 51 adopts the STM32L431RCT6 chip, the PWM drive circuit 52 adopts the DRV8833PWPR dual H-bridge driver, and the power conversion circuit 56 adopts the MP2307 MPS synchronous buck converter + AMS1117-5.0 low dropout regulator.

[0054] In one embodiment, the light detection sensor assembly 3 includes a brightness sensor 31, a color temperature sensor 32, and a blue light sensor 33. The brightness sensor 31, color temperature sensor 32, and blue light sensor 33 are respectively connected to the signal input interface 53 of the control module 5.

[0055] The brightness sensor 31 is used to detect the brightness value on the tabletop 102 of the study desk in real time;

[0056] The color temperature sensor 32 is used to detect the light color temperature value on the tabletop 102 of the study desk in real time;

[0057] The blue light sensor 33 is used to detect the blue light value of the light on the tabletop 102 of the study desk in real time.

[0058] Specifically, in this embodiment, the light detection sensor assembly 3 detects the illuminance, color temperature, and blue light values ​​on the tabletop 102 of the study desk by setting a brightness sensor 31, a color temperature sensor 32, and a blue light sensor 33, respectively. The brightness sensor 31 converts the light intensity into an electrical signal through a photosensitive element and outputs the brightness value in real time; the color temperature sensor 32 calculates the color temperature value by detecting the ratio of RGB three colors; and the blue light sensor 33 filters the blue light component through a specific wavelength filter and quantifies the blue light value. The detection signals of the three sensors are transmitted to the main control MCU 51 to form complete light environment data.

[0059] In this embodiment, the three sensors each perform their own functions, avoiding errors caused by a single sensor detecting multiple parameters and improving detection accuracy; the independent blue light detection specifically addresses the core pain point of children's vision protection and meets myopia prevention and control standards.

[0060] Specifically, in this embodiment, the brightness sensor 31 is a VEML7700 sensor (detection range 0.01-120000 lux), the color temperature sensor 32 is a TCS34727FN sensor (color temperature detection range 2000K-10000K), and the blue light sensor 33 is an RPR-0521RS sensor (detection wavelength 400-450nm).

[0061] In one embodiment, the detection surfaces of the brightness sensor 31, color temperature sensor 32, and blue light sensor 33 are all facing the center area of ​​the tabletop 102 of the study desk.

[0062] In this embodiment, by setting the sensor detection surface to face the central area of ​​the tabletop 102 (the core learning area for children), the sensor collects the light environment parameters of the "effective learning area" rather than invalid parameters of non-core areas such as edges and shadows, ensuring that the detection data matches the actual learning needs.

[0063] This embodiment can effectively avoid misjudgments caused by interference from non-core area parameters, ensuring that the lighting adjustment is consistent with actual needs; reduce detection errors caused by deviations in light reflection angles, improving data reliability; and adapt to children's sitting posture habits, maximizing eye protection.

[0064] In one embodiment, the main light source module 2 includes a full-spectrum LED light strip 21, a reflector (not shown in the figure), and a light-transmitting plate (not shown in the figure). The full-spectrum LED light strip 21 is connected to the output terminal of the PWM drive circuit 52 of the control module 5.

[0065] A light-transmitting plate is disposed on the bottom surface of the elongated housing 1. The full-spectrum LED light strip 21 and the reflector are both disposed inside the elongated housing 1. The full-spectrum LED light strip 21 is located inside the rear side wall of the elongated housing 1, and the reflector is located between the rear side wall of the elongated housing 1 and the full-spectrum LED light strip 21.

[0066] Specifically, the full-spectrum LED light strip 21 is installed on the inner side of the rear wall of the elongated housing 1. Part of the emitted light is directed directly toward the tabletop 102, while the other part is reflected back to the tabletop 102 by a reflector. The light-transmitting plate on the bottom of the housing diffuses the direct and reflected light to form uniform basic lighting. The full-spectrum LED light strip 21 is connected to the PWM drive circuit 52 and receives brightness adjustment signals.

[0067] In this embodiment, full-spectrum LEDs simulate natural light, reducing visual fatigue and improving visual comfort; the reflector improves light utilization and effectively reduces power consumption at the same brightness; the light-transmitting plate avoids "point light source glare", greatly improving the uniformity of illumination on the tabletop 102 and solving the shadow problem; the concealed installation of the full-spectrum LED light strip 21 reduces the risk of glare.

[0068] Specifically, in this embodiment, the reflector uses an aluminum reflective film with a reflectivity of ≥90%, a thickness of 0.1mm, and adhesive-backed installation; the light-transmitting plate uses a 3mm frosted acrylic sheet with a light transmittance of ≥85%, a haze of 60%, and resistance to ultraviolet aging.

[0069] In one embodiment, the projection light source module 4 includes an auxiliary light source 41 and a DLP projection chip 42. The signal input terminal of the DLP projection chip 42 is connected to the signal output interface 54 of the control module 5, and the control terminal of the DLP projection chip 42 is connected to the auxiliary light source 41. The DLP projection chip 42 is used to adjust the light emitted by the auxiliary light source 41 and reflect it onto the tabletop 102 of the study desk.

[0070] Specifically, the DLP projection chip 42 receives adjustment instructions from the main control MCU 51 through the signal output interface 54, and controls the color and brightness of the auxiliary light source 41 according to the instructions; for example, when the color temperature is too low, the red light output ratio is increased, and when the brightness is insufficient, the overall brightness is increased; the DLP projection chip 42 reflects the light from the auxiliary light source 41 to the table 102 through the micromirror array, forming superimposed illumination with the full spectrum of the main light source.

[0071] In this embodiment, the projection light source module 4 achieves high-precision light color adjustment through the DLP projection chip 42, correcting the deviation of the main light source parameters; the superposition of dual light sources avoids parameter fluctuations when adjusting a single light source, ensuring a stable light environment; the reflective light path design reduces light loss and improves the utilization efficiency of the auxiliary light source 41.

[0072] Specifically, in this embodiment, the DLP projection chip 42 is a DLP2010 chip, and the auxiliary light source 41 is driven by a TPS92661 driver chip.

[0073] In one embodiment, the auxiliary light source 41 is a red, green and blue tri-color LED light strip 411, which is located on the inner side of the front side wall of the elongated housing 1.

[0074] Specifically, in this embodiment, the auxiliary light source 41 adopts a red, green and blue three-color LED light strip 411, the brightness of which can be controlled independently by the three colors of LED beads, and can achieve arbitrary color temperature and light color output by mixing them in different proportions; the light strip is installed on the inner side of the front side wall of the long shell 1, and together with the full spectrum light strip on the rear side wall, it can achieve full coverage of the tabletop 102 of the study desk.

[0075] In this embodiment, the RGB three-color light strip supports full color temperature adjustment from 2700K to 6500K to adapt to different learning scenarios; the front and rear layout completely solves the problem of "uneven light source coverage" and improves the uniformity of illumination on the outer side of the table 102; the hidden installation avoids children looking directly at the light beads and enhances the anti-glare effect.

[0076] Specifically, the red, green and blue tri-color LED light strip 411 uses the MJT5630 RGB light strip.

[0077] In one embodiment, the red, blue, and green light adjusted by the DLP projection chip 42 is mixed with the full-spectrum light emitted by the full-spectrum LED light strip 21 at the light-transmitting plate to form mixed light, which is then projected onto the tabletop 102 of the study desk.

[0078] In this embodiment, the RGB three-color light and full-spectrum light adjusted by the DLP projection chip 42 converge at the light-transmitting plate on the bottom of the elongated housing 1. The frosted structure of the light-transmitting plate causes the two types of light to scatter and refract, forming a uniformly mixed light. In the mixed light, the full-spectrum light provides a natural light texture, and the three-color light supplements the parameter correction, and finally projects onto the table 102.

[0079] This embodiment can effectively avoid uneven light color caused by the layered projection of two types of light, ensuring that the color temperature difference of any area of ​​the table 102 meets the requirements; the mixed light retains the natural light characteristics of the full spectrum, while correcting parameter deviations through three-color light, taking into account both comfort and eye protection, further reducing the risk of glare, and conforming to the visual characteristics of children.

[0080] In one embodiment, the brightness range of the auxiliary light source 41 is 3000lm to 5000lm.

[0081] In this embodiment, the lower limit of the brightness range of the auxiliary light source 41 meets the supplementary lighting requirements of extremely low light environments (ensuring that the brightness of the table 102 is ≥200 lux), and the upper limit avoids glare caused by excessive supplementary lighting (controlling the brightness of the table 102 to ≤750 lux). The main control MCU 51 dynamically adjusts the brightness of the auxiliary light source 41 within this range based on real-time detection data to achieve supplementary lighting as needed.

[0082] like Figure 2 As shown, this utility model embodiment also provides a study desk, including a study desk body 10 and a bookshelf 101 disposed on the top of the study desk body 10, and also includes a study desk adaptive lighting device of any of the above embodiments.

[0083] Since the study desk in this embodiment is equipped with the adaptive lighting device of any of the above embodiments, its working principle and advantages in terms of adaptive lighting are the same as those of the adaptive lighting device of this application, and will not be repeated here.

[0084] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A learning desk adaptive lighting device, characterized in that, The device is installed on the bookshelf of a study desk and includes a long, narrow housing, a main light source module, a light detection sensor assembly, a projection light source module, and a control module. The main light source module, projection light source module, and control module are all housed within the long, narrow housing. The main light source module, light detection sensor assembly, and projection light source module are each connected to the control module. The light detection sensor assembly is used to detect the illuminance, color temperature and blue light values ​​on the desk in real time and transmit them to the control module. The control module is used to control the opening and closing of the main light source module, and to control the working state of the projection light source module according to the illuminance value, color temperature value and blue light value detected by the light detection sensor component, so as to make the illuminance value, color temperature value and blue light value on the table meet the preset threshold.

2. The learning desk adaptive lighting device according to claim 1, characterized in that, The control module includes a main control MCU, a PWM drive circuit, a signal input interface, a signal output interface, a power input interface, and a power conversion circuit. The power input interface is connected to the input terminal of the power conversion circuit. The input terminal, signal input interface, signal output interface, and output terminal of the power conversion circuit of the PWM drive circuit are respectively connected to the main control MCU. The signal input interface is connected to the signal output terminal of the light detection sensor assembly. The signal output interface is connected to the signal input terminal of the projection light source module. The output terminal of the PWM drive circuit is connected to the main light source module.

3. The learning desk adaptive lighting device according to claim 2, characterized in that, The light detection sensor assembly includes a brightness sensor, a color temperature sensor, and a blue light sensor. The brightness sensor, color temperature sensor, and blue light sensor are respectively connected to the signal input interface of the control module. The brightness sensor is used to detect the brightness value of the tabletop of the study desk in real time; The color temperature sensor is used to detect the color temperature value of the light on the tabletop of the study desk in real time; The blue light sensor is used to detect the blue light level on the desk in real time.

4. The learning desk adaptive lighting device according to claim 3, characterized in that, The detection surfaces of the brightness sensor, color temperature sensor, and blue light sensor are all directly facing the center area of ​​the desk.

5. The self-adaptive lighting device of a learning desk according to claim 2, characterized in that, The main light source module includes a full-spectrum LED light strip, a reflector, and a light-transmitting plate. The full-spectrum LED light strip is connected to the output terminal of the PWM drive circuit of the control module. The light-transmitting plate is disposed on the bottom surface of the elongated housing, and the full-spectrum LED light strip and the reflector are both disposed inside the elongated housing. The full-spectrum LED light strip is located on the inner side of the rear side wall of the elongated housing, and the reflector is located between the inner side of the rear side wall of the elongated housing and the full-spectrum LED light strip.

6. The learning desk adaptive lighting device according to claim 5, characterized in that, The projection light source module includes an auxiliary light source and a DLP projection chip. The signal input terminal of the DLP projection chip is connected to the signal output interface of the control module, and the control terminal of the DLP projection chip is connected to the auxiliary light source. The DLP projection chip is used to adjust the light emitted by the auxiliary light source and reflect it onto the tabletop of the study desk.

7. The learning desk adaptive lighting device according to claim 6, characterized in that, The auxiliary light source is a red, green and blue LED light strip, which is located on the inner side of the front side wall of the elongated housing.

8. The learning desk adaptive lighting device according to claim 7, characterized in that, The adjusted red, blue and green light rays of the DLP projection chip and the full-spectrum light rays emitted by the full-spectrum LED lamp strip are mixed at the light transmission plate to form mixed light rays, which are then projected onto the table plate of the learning desk.

9. The learning desk adaptive lighting device according to claim 6, characterized in that, The brightness range of the auxiliary light source is 3000 lm-5000 lm.

10. A study desk comprising a study desk body and a bookshelf provided on the top of the study desk body, characterized in that, The learning desk adaptive lighting device also includes the learning desk adaptive lighting device according to any one of claims 1-9.

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