Display device and learning tablet

Abstract

The utility model provides a display device and a learning tablet, the display device comprises a display screen and an eye protection illumination module, the eye protection illumination module comprises a preset eye protection light source, and the eye protection illumination module is arranged in a reciprocating sliding mode relative to the display screen so as to be stored behind the display screen or extend out of the display screen area; and after extending out of the display screen area, the light source is started to irradiate human eyes. According to the application, the eye protection illumination module independent of the display screen is utilized to irradiate the human eyes, through the non-invasive photobiological regulation effect, the choroid thickness and the retinal metabolism are enhanced, the asthenopia is relieved, meanwhile, myopia development is inhibited from the source, and the incidence rate of myopia is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of eye protection display, and further relates to a display device and a learning tablet. BACKGROUND

[0002] In recent years, the popularity of consumer electronics products has never been higher, which not only facilitates production and life, but also brings certain health risks to users.

[0003] For example, for children and adolescents, long-time and close-range viewing of electronic screens causes visual fatigue and accelerated growth of the eye axis, and aggravates the risk of myopia; according to the latest data published by the state, the overall myopia rate of children and adolescents in China is high. In view of this, the inventors believe that the relevant industry urgently needs to develop effective vision protection products to reduce the incidence of myopia and protect the vision health of users. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a display device and a learning tablet to protect the vision of users during the use of electronic products, relieve visual fatigue, reduce the incidence of myopia, and protect the vision health of users.

[0005] The technical solutions provided by the present application are as follows:

[0006] In one aspect, the present application provides a display device, comprising:

[0007] a display screen;

[0008] an eye protection lighting module comprising a preset eye protection light source; the eye protection lighting module is reciprocally slidable relative to the display screen to be accommodated behind the display screen or to extend out of the display screen area, and is started after extending out of the display screen area to irradiate the human eye.

[0009] Through the display device provided by the present application, in the initial state, the eye protection lighting module is accommodated in the area behind the display screen; when using the corresponding display device, the user sets the eye protection lighting module to extend out of the display screen area according to the needs of the user, and starts the eye protection lighting module and the display device at the same time, so that the user can watch the corresponding content on the display screen while irradiating the human eye with the preset eye protection light source of the eye protection lighting module. In this way, the choroidal thickness and retinal metabolism are enhanced by using the non-invasive photobiomodulation effect, visual fatigue is relieved, and the incidence of myopia is reduced by inhibiting the development of myopia from the source. That is, the display device has a vision protection effect, and the display device provides a comfortable and healthy eye environment for the user during use, reduces the vision risk caused by the radiation of the display screen to the user, and improves the user experience.

[0010] In some embodiments, the eye protection lighting module comprises a red light LED lamp.

[0011] In some embodiments, the eye-care lighting module comprises a red light LED lamp and a blue light LED lamp.

[0012] By the display device provided in the present application, the red light LED lamp is arranged as the eye-care lighting module, which helps to ensure the eye-care effect, because the specific red light band can be used to enhance the choroid nutrition supply and inhibit the axial growth.

[0013] The specific blue light band has the effects of improving the imaging quality and improving the fundus blood flow density, and the red light LED lamp and the blue light LED lamp are arranged as the eye-care lighting module, the eye-care effect of the blue light LED lamp on the red light LED lamp is further promoted, and the effectiveness of the eye-care function of the display device is effectively ensured.

[0014] In some embodiments, the display device further comprises a posture correction module.

[0015] The posture correction module is electrically connected with the eye-care lighting module to ensure the safety of the preset eye-care light source into the eye.

[0016] In some embodiments, the posture correction module comprises a distance sensor arranged on the display screen frame for detecting the distance between the human eye and the display screen.

[0017] In some embodiments, the posture correction module comprises a posture detection camera for detecting the plane range of the human eye in front of the display screen.

[0018] In practical application, the distance sensor and the posture detection camera respectively detect the distance of the user's eye relative to the display screen and the plane position relative to the display screen, when it is detected that the human eye is in the preset position in front of the display screen, the eye-care lighting module is started, and the preset eye-care light source starts to irradiate the human eye, so as to avoid the situation that the user is too close to the display screen to cause the preset eye-care light source to injure the human eye and / or the user is too far away from the display screen to achieve the eye-care effect, improve the safety of the display device, effectively ensure the safety of the preset eye-care light source into the eye, and further ensure the eye-care effect of the display device.

[0019] In some embodiments, the posture detection camera is arranged in reciprocating sliding relative to the display screen, so as to be accommodated behind the display screen or protrude from the display screen, and is started when protruding from the display screen to detect the user's posture.

[0020] The display device provided by the present application has the posture detection camera arranged in a lifting manner relative to the display screen and can be accommodated behind the display screen, which helps to promote the miniaturization and light weight development of the display device, reduces the adverse effects of the external environment on the posture detection camera, prolongs the service life of the posture detection camera, and ensures the long-term stability and effectiveness of the eye protection function of the display device.

[0021] In some embodiments, the display device further comprises a brightness detection module, which is fixed behind the display screen.

[0022] When the eye protection illumination module is located behind the display screen, the brightness detection module is located between the eye protection illumination module and the display screen, and is used to detect the brightness of the preset eye protection light source of the eye protection illumination module, so as to assist in judging the working state of the eye protection illumination module.

[0023] The brightness detection module is electrically connected with the eye protection illumination module.

[0024] In actual application, before the eye protection illumination module extends out of the display screen area, the brightness detection module detects the brightness of the preset eye protection light source of the eye protection illumination module. When it is detected that the preset eye protection light source of the eye protection illumination module meets the preset brightness and normally lights up, the eye protection illumination module can extend out of the display screen area and perform eye protection work. When it is detected that the preset eye protection light source of the eye protection illumination module does not light up or the brightness is inconsistent with the preset brightness, the eye protection illumination module is detected and calibrated, and then the brightness detection module is detected again……until the preset eye protection light source of the eye protection illumination module emits normal brightness. In this way, the safety of the eye protection function of the display device can be stably ensured.

[0025] In some embodiments, the brightness detection module comprises a brightness sensor.

[0026] In some embodiments, the brightness sensor comprises a plurality of brightness sensors, and the plurality of brightness sensors are uniformly and spacedly arranged corresponding to the eye protection illumination module.

[0027] The display device provided by the present application comprises a plurality of brightness sensors for detecting the uniformity of the brightness of the eye protection illumination module and assisting in obtaining the average brightness, so as to ensure the normal operation of the eye protection illumination module and stably ensure the eye protection effect of the display device.

[0028] On the other hand, the present application also provides a learning tablet comprising the display device described above.

[0029] It also includes a learning content detection camera, which is configured to slide back and forth relative to the display screen to be housed behind the display screen or extend out of the display screen area, and is activated when it extends out of the display screen area to detect the learning content.

[0030] This application provides a learning tablet that applies the aforementioned display device to the field of learning tablets, providing children and adolescents with a comfortable and healthy eye-use environment and reducing their myopia rate. Simultaneously, by combining it with a learning content detection camera, the learning tablet can quickly scan text from paper books, magazines, newspapers, etc., and convert it into electronic text to assist users in reading, translating, and other operations. This helps expand the functionality of the learning tablet, improve user learning efficiency, and enhance its practicality.

[0031] Compared with the prior art, the display device and learning tablet provided in this application have at least one of the following advantages:

[0032] Beneficial effects:

[0033] 1. This application utilizes a non-invasive photobiological modulation effect by setting an eye-protection lighting module containing a preset eye-protection light source on the display screen to enhance choroidal thickness and retinal metabolism, relieve visual fatigue, and inhibit the development of myopia from the source, thereby reducing the incidence of myopia. In addition, the eye-protection lighting module is set independently of the display screen, which effectively reduces the production difficulty and cost of the corresponding display device while ensuring the eye-protection effect. Furthermore, the eye-protection lighting module can be replaced separately, resulting in low maintenance costs and effectively promoting cost reduction and efficiency improvement for enterprises.

[0034] 2. This application sets the eye-protection lighting module and the posture detection camera to slide back and forth relative to the display screen so that they can be stored behind the display screen when not in use. On the one hand, this helps to promote the miniaturization and lightweight development of the display device; on the other hand, it also helps to extend the service life of the corresponding components and the display device, thereby ensuring the long-term stable and effective eye protection function of the display device.

[0035] 3. In this application, by setting the posture correction module and the brightness detection module to be electrically connected to the eye protection lighting module, the safety of the display device is stably guaranteed. Attached Figure Description

[0036] The preferred embodiments will now be described in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this solution.

[0037] Figure 1 This is a state diagram illustrating the eye-protection lighting module when it is located behind the display screen, which is the main embodiment of this application.

[0038] Figure 2is a state diagram of the eye-care lighting module extending outside the display screen area, which is mainly embodied in the present embodiment of the application;

[0039] Figure 3 is a curve diagram of the relationship between the luminous flux of the preset eye-care light source contained in the eye-care lighting module and the use distance, which is mainly embodied in the present embodiment of the application;

[0040] Figure 4 is a curve diagram of the relationship between the luminance of the preset eye-care light source contained in the eye-care lighting module and the use distance, which is mainly embodied in the present embodiment of the application;

[0041] Figure 5 is a plane schematic diagram of the position relationship between the user and the display device in the use state, which is mainly embodied in the present embodiment of the application;

[0042] Figure 6 is a curve diagram of the relationship between the reminder window size and the use distance, which is mainly embodied in the present embodiment of the application;

[0043] Figures 7 to 9 is a plane schematic diagram of other setting structures of the display device, which is mainly embodied in the present embodiment of the application;

[0044] Figure 10 is a structure schematic diagram of the eye-care lighting module surrounding the posture detection camera, which is mainly embodied in the present embodiment of the application.

[0045] Legend of reference signs:

[0046] 1, display screen; 2, eye-care lighting module; 3, luminance detection module; 31, luminance sensor; 4, posture detection camera; 5, distance sensor; 6, learning content detection camera; 7, small game interactive fixation area. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings and other embodiments according to these drawings without creative labor.

[0048] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0049] With the development of electronic and network technology, people's dependence on consumer electronic products such as mobile phones, tablets, computers and the like is increasing; however, long-term and close-range viewing of electronic screens has a certain impact on human health. For example, for children and adolescents, long-term and close-range viewing of screens can easily cause visual fatigue and accelerate eye axis growth, increasing the risk of myopia; according to the latest data released by the state, the overall myopia rate of children and adolescents in China is high, and effective myopia protection measures are urgently needed to reduce the incidence of myopia.

[0050] To this end, in one embodiment, referring to the drawings of the specification Figures 1 to 10 , a display device is provided to protect the user's vision while using consumer electronic products, relieve visual fatigue, and reduce the incidence of myopia. It includes a display screen 1 and an eye protection lighting module 2, wherein the eye protection lighting module 2 contains a preset eye protection light source, which is reciprocally slidingly arranged relative to the display screen 1 to be accommodated behind the display screen 1 or protrude from the display screen 1 area, and the eye protection lighting module 2 can be started after protruding from the display screen 1 area, so that the preset eye protection light source irradiates the human eye, uses non-invasive photobiomodulation, enhances choroidal thickness and retinal metabolism, relieves visual fatigue, simultaneously inhibits the development of myopia from the source, reduces the incidence of myopia, and improves eye comfort.

[0051] In one embodiment, based on the above embodiment, specifically, referring to Figure 1 and Figure 2 , the display screen 1 is generally in the shape of a rectangular plate; of course, the shape of the display screen 1 is not the same for different types of consumer electronic products, which will not be described here.

[0052] Referring to Figure 1 and Figure 2 , to ensure the best eye protection effect, the eye protection lighting module 2 is preferably accommodated in the upper middle part of the display screen 1 when it is located behind the display screen 1; and when it protrudes from the display screen 1 area, it protrudes above the width direction of the display screen 1; that is, the eye protection lighting module 2 is vertically arranged relative to the plane where the display screen 1 is located. In the embodiments of the present application, the lifting method of the eye protection lighting module 2 is not specifically limited, for example, an electronic push rod or the like is arranged behind the display screen 1 to drive the eye protection lighting module 2 to automatically lift relative to the display screen 1; or a sliding groove / slide rail structure is arranged behind the display screen 1 to manually push and pull the eye protection lighting module 2 relative to the display screen 1 to lift.

[0053] In this embodiment, the eye protection lighting module 2 is independently arranged relative to the display screen 1, and the eye protection lighting module 2 can be individually arranged and replaced. Of course, in the embodiments of the present application, in addition to the arrangement mode of this embodiment, the eye protection lighting module 2 can also be installed on the outside of the display screen 1 through magnetic attraction or the like (in actual application, the user moves the eye protection lighting module 2 relative to the display screen 1 to a suitable position according to the needs of the user to perform eye protection operation), so as to reduce the production and maintenance costs of the corresponding display device while ensuring the eye protection effect, and promote energy saving and cost reduction of enterprises.

[0054] It is well known in the industry that the red light waveband of 650 nm has strong penetration, and after penetrating the retina, it simultaneously acts on the choroid, and the resulting thermal effect causes the bottleneck-like stenosis at the opening of the arterioles of the choroid to open, thereby increasing the microcirculation blood volume to provide sufficient oxygen to the sclera, and then improving the blood circulation of the fundus, and promoting the secretion of dopamine by the retinal epithelial pigment cells, thereby inhibiting the excessive growth of the eye axis. Therefore, the red light LED lamp is preferentially selected as the preset eye protection light source of the eye protection lighting module 2 in this embodiment, so as to realize the eye protection effect by its characteristics of enhancing the nutrient supply of the choroid and inhibiting the growth of the eye axis.

[0055] Of course, the eye protection lighting module 2 can also be arranged to include a red light LED lamp and a blue light LED lamp in combination with the characteristics of improving the imaging quality and improving the blood flow density of the fundus of a specific blue light waveband; wherein the blue light LED lamp is used to promote the eye protection effect of the red light LED lamp, so as to stably ensure the eye protection function of the display device.

[0056] In the present application, the red light center wavelengths λr1 and λr2 are preferably arranged, and the spectral range is λr1-FWHM (FWHM is the wavelength width when the transmittance decreases to half of the maximum value), that is, the red light spectrum is λr1±λr1-FWHM and λr2±λr2-FWHM; the blue light center wavelength λb is arranged, and the spectral range is λb-FWHM, that is, the blue light spectrum is λb±λb-FWHM; wherein λr1-FWHM=60nm, λr2-FWHM=60nm, and λb-FWHM=30nm. The red light center wavelength λr1 needs to satisfy 630nm≤λr1≤670nm; the red light center wavelength λr2 needs to satisfy 670nm≤λr2≤780nm; and the blue light center wavelength λb needs to satisfy 460nm≤λb≤490nm.

[0057] Of course, the eye protection lighting module 2 can also include other specific wavelengths, wavelength ranges and intensities of light spectrum, which are not described here, as long as the technical solutions that can realize stable eye protection effect are included in the protection scope of the present application.

[0058] In this embodiment, the eye-care lighting module 2 is arranged in a generally rectangular shape, so that the preset eye-care light source presents the characteristics of soft light, no harm to eyes, natural light, etc., to provide a more comfortable eye-using environment for the user and further reduce the myopia rate and other potential eye health risks. Moreover, the radiant luminous flux of the LED is also limited. If the total luminous flux emitted by all red LED lamps of the surface light source is Lr lumens, the total luminous flux emitted by all blue LED lamps is Lb lumens, and r is defined as the ratio of the total luminous flux of the two light sources, i.e. r = Lr : Lb, then 0.5 ≤ r ≤ 15. The total luminous flux L = Lb + Lr, and the value of L is related to the distance at which the surface light source is actually used, and the farther the distance, the greater the value of L. Referring to Figure 3 , a curve graph showing the relationship between the radiant luminous flux and the distance of use when the light-emitting area of the eye-care lighting module 2 is 30*40 mm2, and referring to Figure 4 , a curve graph showing the relationship between the brightness and the distance of use when the light-emitting area of the eye-care lighting module 2 is 30*40 mm2.

[0059] Further, the display device further comprises a brightness detection module 3 and a posture correction module, both of which are electrically connected to the eye-care lighting module 2 to ensure the safety of the preset eye-care light source into the eye. Referring to Figure 1 and Figure 2 , the brightness detection module 3 is fixedly installed at the rear of the display screen 1, so that the user can detect the brightness of the preset eye-care light source of the eye-care lighting module 2 when the eye-care lighting module 2 is in the state of being repositioned behind the display screen 1 according to his own needs. Specifically, in this embodiment, the brightness detection module 3 comprises a plurality of brightness sensors 31, which are arranged between the eye-care lighting module 2 and the display screen 1 corresponding to the eye-care lighting module 2 and are uniformly spaced to detect the uniformity of the brightness of the surface light source of the eye-care lighting module 2 and assist in obtaining the average brightness, and further assist in judging the working state of the eye-care lighting module 2.

[0060] In actual application, before the eye-care lighting module 2 extends out of the area of the display screen 1, the brightness detection module 3 is started to detect the brightness of the preset eye-care light source of the eye-care lighting module 2. When it is detected that the preset eye-care light source of the eye-care lighting module 2 meets the preset brightness and normally lights up, the eye-care lighting module 2 can extend out of the area of the display screen 1 and perform eye-care work. When it is detected that the preset eye-care light source of the eye-care lighting module 2 does not light up or the brightness is inconsistent with the preset brightness, the user detects and calibrates the eye-care lighting module 2, and then starts the brightness detection module 3 again to detect the brightness of the preset eye-care light source of the eye-care lighting module 2 again……until the corresponding preset eye-care light source emits a normal brightness. In this way, the use safety of the display device is effectively improved.

[0061] Referring to Figures 1 to 2The posture correction module comprises a posture detection camera 4 and a distance sensor 5. The distance sensor 5 is arranged on the upper frame of the display screen 1 and is used to detect the distance between the eyes and the display screen 1. The posture detection camera 4 is arranged in a reciprocating sliding manner relative to the display screen 1, so as to be accommodated behind the display screen 1 or to protrude from the display screen 1. When the posture detection camera 4 protrudes from the display screen 1, the posture detection camera 4 is started to detect the posture of the user and to detect the plane range in which the eyes are located in front of the display screen 1. In the embodiment, a sliding block is arranged on the display screen 1 in a reciprocating sliding manner along the width direction of the display screen 1, and the sliding block is located at the upper middle part of the display screen 1 along the width direction. The posture detection camera 4 is installed on the sliding block and is arranged in a vertical lifting manner relative to the plane of the display screen 1. Similarly, the lifting manner of the posture detection camera 4 is not limited in the application.

[0062] In actual application, the distance sensor 5 and the posture detection camera 4 are respectively used to detect the distance between the eyes and the display screen 1 and the plane position of the eyes relative to the display screen 1. Referring to Figure 5 When it is detected that the eyes are located at the preset position in front of the display screen 1, the eye protection illumination module 2 is started to make the preset eye protection light source irradiate the eyes, so as to avoid the situation that the user is too close to the display screen 1 and the preset eye protection light source injures the eyes or the situation that the user is too far away from the display screen 1 and the eye protection effect cannot be achieved. In this way, the safety use of the display device is stably ensured, and the development of the display device to miniaturization is further promoted.

[0063] In addition, the posture detection camera 4 can also be used to monitor the line of sight of the user, so as to assist in counting the time in which the user gazes at the display screen 1. For example, when the user gazes at the effective area of the display screen 1 for 3-5 minutes, the eye protection illumination module 2 is turned off.

[0064] In the embodiment, when the display device is connected to the host computer and the eye protection program is run, a movable reminder window can be further arranged on the display screen 1. The position movement information of the eyes of the user is displayed by using the reminder window, and the user is prompted to keep the eyes at the optimal viewing position, so as to ensure the viewing and eye protection effects. Figure 6 FIG. 4 shows the curve diagram of the size of the reminder window and the distance relationship when the light emitting area of the eye protection illumination module 2 is 30*40 mm2.

[0065] As preferred, referring to Figure 10 A small game interactive gazing area 7 can also be arranged on the display screen 1. In actual application, when the display screen 1 is turned on, the small game interactive gazing area 7 displays a preset interesting small game, so as to attract the line of sight of the user and ensure that the line of sight of the user always falls into the effective area of the display screen 1 in the eye protection process, thereby stably ensuring the eye protection effect of the display device. Referring to Figure 10 When the small game interactive gazing area 7 is arranged at the upper middle part of the display screen 1, that is, close to the eye protection illumination module 2, the preset eye protection light source of the eye protection illumination module 2 is in a high dose mode.

[0066] In actual application, when the preset eye protection light source of the eye protection lighting module 2 is in the high dose mode, the eye protection lighting module 2 can be turned on for a short time every day, for example, 3-5 minutes each time, 2 times a day, and the time interval between the two times is 4 hours. When the preset eye protection light source of the eye protection lighting module 2 is in the low dose mode, the eye protection lighting module 2 can be in a normal open state, for example, 20 minutes per day, which can be equivalent to 1 hour of outdoor activities.

[0067] The embodiment combines the brightness sensor 31, the posture detection camera 4 and the distance sensor 5 on the display device, so that the eye dose of the preset eye protection light source meets the eye protection requirements and has no safety risk after the eye protection lighting module 2 is turned on. In addition, Figures 7 to 10 The structural schematic diagram of the display device when the area of the eye protection lighting module 2 is enlarged and the brightness thereof is reduced is shown, which can be arbitrarily selected according to the needs of the user; for example, in order to facilitate heat dissipation, any one of the three setting modes can be selected.

[0068] The implementation principle of the embodiment is as follows: in actual application, the display device is started, the brightness detection module 3 detects the brightness of the surface light source of the eye protection lighting module 2; when it is detected that the preset eye protection light source of the eye protection lighting module 2 meets the preset brightness and normally lights up, the eye protection lighting module 2 is set to protrude from the display screen 1 area, and then the distance sensor 5 and the posture detection camera 4 are started; when it is detected that the human eye is in the preset effective area in front of the display screen 1, the eye protection lighting module 2 is started to irradiate the human eye with the preset eye protection light source, and the display device enters the eye protection mode.

[0069] In this way, the user's eyesight is protected during the use of the electronic product, the user's visual fatigue is effectively relieved, the eye comfort is improved, and the incidence of myopia is reduced; at the same time, the overall structure is simple, the production and use are convenient, the production and maintenance costs of the corresponding display device are significantly reduced while ensuring the eye protection effect, and the energy saving and cost reduction of enterprises are promoted.

[0070] Next, taking the application of the display device in specific consumer electronic products as an example, the technical solutions of the present application are further described. In this regard, in one embodiment, a learning tablet is provided, which includes any one of the above-mentioned display devices.

[0071] In addition to the components described in the above embodiments, the learning tablet further includes a host, the display screen 1 is arranged on the upper surface of the host, the eye protection lighting module 2, the posture detection camera 4, the brightness sensor 31 and the like are arranged between the host and the display screen 1, and in the preferred embodiment, the mounting positions of the eye protection lighting module 2, the posture detection camera 4 and the brightness sensor 31 are reserved on the side of the host close to the display screen 1, and the lifting channels of the eye protection lighting module 2 and the posture detection camera 4 are reserved on the upper position thereof to realize the corresponding lifting function.

[0072] In addition, in order to improve the versatility of the learning tablet, a learning content detection camera 6 is arranged at the display screen 1. Preferably, the learning content detection camera 6 is arranged to reciprocally slide along the width direction of the plane where the display screen 1 is located, that is, the learning content detection camera 6 is also arranged to vertically ascend and descend relative to the plane where the display screen 1 is located. At this time, the learning content detection camera 6 and the posture detection camera 4 are preferably arranged on the slider at the same time and form a smart eye module, so as to optimize the overall structure of the learning tablet, improve the aesthetic and use convenience of the learning tablet, and promote the cost reduction and efficiency increase of enterprises.

[0073] In addition, the display device is applied to the field of learning tablet, and in combination with the brightness sensor 31, the distance sensor 5 and the posture detection camera 4, it can be ensured that after the eye protection lighting module 2 is turned on, the preset eye protection light source eye dose meets the eye protection demand and has no safety risk, so as to provide a safe, comfortable and healthy eye environment for children and adolescents, and effectively reduce the myopia rate of children and adolescents. At the same time, in combination with the learning content detection camera 6, the learning tablet has the function of quickly scanning paper books, magazines, newspapers and other texts and converting them into electronic texts, which can effectively assist children and adolescents in reading, translating and other operations on corresponding texts, and help to improve the learning efficiency of children and adolescents, and has strong practicability.

[0074] It should be noted that the users of the learning tablet are more extensive and are not limited to children and adolescents, and the children and adolescents are only used as examples here.

[0075] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred implementation manner of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a display screen; an eye protection lighting module comprising a preset eye protection light source; the eye protection lighting module is arranged to reciprocally slide relative to the display screen to be accommodated behind the display screen or to extend out of the display screen area, and to be activated after extending out of the display screen area to irradiate the human eye.

2. The display device according to claim 1, wherein the eye protection lighting module comprises a red light LED lamp; or, the eye protection lighting module comprises a red light LED lamp and a blue light LED lamp.

3. The display device according to claim 1 or 2, wherein the display device further comprises a posture correction module; the posture correction module is electrically connected with the eye protection lighting module to ensure the safety of the preset eye protection light source.

4. The display device according to claim 3, wherein the posture correction module comprises a distance sensor arranged on the frame of the display screen to detect the distance between the human eye and the display screen.

5. The display device according to claim 4, wherein the posture correction module comprises a posture detection camera to detect the plane range where the human eye is located in front of the display screen.

6. The display device according to claim 5, wherein the posture detection camera is arranged to reciprocally slide relative to the display screen to be accommodated behind the display screen or to extend out of the display screen area, and to be activated after extending out of the display screen area to detect the plane range where the user is located in front of the display screen.

7. The display device according to claim 1 or 2, wherein the display device further comprises a brightness detection module fixedly arranged behind the display screen; when the eye protection lighting module is located behind the display screen, the brightness detection module is located between the eye protection lighting module and the display screen to detect the brightness of the preset eye protection light source of the eye protection lighting module to assist in judging the working state of the eye protection lighting module; the brightness detection module is electrically connected with the eye protection lighting module.

8. The display device according to claim 7, wherein the brightness detection module comprises a brightness sensor.

9. The display device according to claim 8, wherein the brightness sensor comprises a plurality of brightness sensors which are uniformly and spacedly arranged corresponding to the eye protection lighting module.

10. A learning tablet, characterized by, The display device according to any one of claims 1-9; further comprising a learning content detection camera arranged to reciprocally slide relative to the display screen to be accommodated behind the display screen or to extend out of the display screen area, and to be activated after extending out of the display screen area to detect the learning content.

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