Adaptive dimming electronic display

Abstract

The application relates to the technical field of display screens, in particular to a self-adaptive light-adjusting electronic display screen which comprises a display screen main body, the display screen main body comprises a frame and a support, and further comprises: a plurality of first ambient light sensors; a light-expanding unit which is used for receiving light emitted by a light source and expanding the light in the direction of the light source; a bidirectional detection unit which is used for detecting light on the front surface and the back surface respectively during the detection process; a control unit which is used for receiving light detection information of the light-expanding unit and the bidirectional detection unit and issuing instructions; and a driving circuit which is used for adjusting the current or voltage supplied to a display panel of the display screen main body to realize light adjustment according to the instructions of the control unit; the device is favorable for avoiding frequent brightness adjustment of the display screen main body, avoiding the adverse effect on the vision of a user, and avoiding the adverse effect of frequent adjustment on the service life of the display screen main body.

Description

Technical Field

[0001] This invention relates to the field of displays, and more particularly to an adaptive dimming electronic display. Background Technology

[0002] Adaptive dimming electronic displays detect the intensity and color temperature of ambient light in real time, and perform dynamic calculations through a built-in driver chip to precisely adjust the screen backlight brightness. This ensures that the human eye can obtain the best visual perception under different lighting conditions, greatly improving visibility in strong light and effectively relieving visual fatigue in low light.

[0003] In existing technologies, during the dimming process of adaptive dimming electronic displays, if the user uses the display at night without turning on the lights, the ambient light comes from the display itself. However, the changes in the displayed image cause frequent changes in the ambient light, resulting in frequent brightness adjustments. On the one hand, frequent brightness adjustments may affect the lifespan of the display; on the other hand, frequent adjustments can also cause visual fatigue and even damage to the user's vision. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adaptive dimming electronic display screen.

[0005] This invention provides an adaptive dimming electronic display screen, including a display screen body, the display screen body including a frame and a bracket, and further including:

[0006] Multiple first ambient light sensors are divided into two groups. One group of first ambient light sensors is evenly distributed and installed on the front of the frame, and the other group of first ambient light sensors is evenly distributed and installed on the back of the frame.

[0007] A light-amplifying unit is installed on the back of the frame and is used to receive and amplify the light emitted by the light source, facing the direction of the light source.

[0008] A bidirectional detection unit is installed on the frame to detect light from the front and back sides respectively during the detection process, and maintains a set rotation time when switching between the front and back sides;

[0009] The control unit, installed inside the main body of the display screen, is used to receive light detection information from the light amplification unit and the bidirectional detection unit and issue commands.

[0010] A driving circuit, installed inside the display screen body, is used to adjust the current or voltage supplied to the display panel of the display screen body according to the instructions of the control unit to achieve dimming;

[0011] During operation, the first ambient light sensor can detect light from both the front and back of the display screen. When the display screen itself emits light as the main source of ambient light, the ambient light brightness on the back of the display screen is significantly lower than that on the front. At this time, the control unit can determine whether there is an ambient light source or not, and thus reduce the brightness adjustment of the display screen by the drive circuit.

[0012] The light amplification unit can be aligned with the indoor light source, allowing the light from the light source to shine directly into the light amplification unit. At this time, the light amplification unit amplifies the light, making the light amplification unit brightly. This can identify the presence of an ambient light source in the room. However, as for the light generated by the display screen itself, because the light amplification unit is not aligned, the light generated by the display screen itself will not shine directly into the light amplification unit, so the light amplification unit will not emit light. In this case, it can be determined that the indoor light source is not turned on, and therefore there is no ambient light source.

[0013] The bidirectional detection unit can repeatedly detect light within a certain period of time, which helps to avoid light changes caused by brief obstructions, and thus avoids brightness adjustments caused by light changes due to brief obstructions, thereby reducing unnecessary brightness adjustments.

[0014] In summary, by considering ambient light sources and temporary occlusion, it is beneficial to avoid frequent brightness adjustments of the display screen, thus preventing adverse effects on the user's vision and also avoiding the negative impact of frequent adjustments on the lifespan of the display screen.

[0015] Preferably, the light amplification unit includes:

[0016] A closed tube is installed on the back of the frame, and a top port is provided at the top of the closed tube to allow light to enter;

[0017] A one-way frame is fixed to the bottom of the enclosed cylinder to allow light to exit in one direction from the one-way frame, thus isolating a large amount of external light from directly entering the interior of the one-way frame.

[0018] A halo panel, installed inside the one-way frame, is made of semi-transparent material and is used to scatter incoming light to expand the light range and achieve a halo effect;

[0019] The bidirectional detection unit, after being turned to the back of the display screen body, is used to detect the light environment inside the one-way frame;

[0020] The light from the indoor light source shines directly through the enclosed cylinder into the interior of the one-way frame. The one-way frame blocks most of the light entering from the outside, while the light inside can pass through and shine out. When the indoor light source is turned on, the light enters the interior of the one-way frame and is diffused and diffused by the halo plate, making the interior of the one-way frame clearly luminous. At this time, it can be determined that the indoor light source is turned on, so that the control unit can control the brightness adjustment of the main body of the display screen normally.

[0021] Preferably, the light amplification unit further includes:

[0022] The first connector box is fixed in the lower interior space of the enclosed cylinder;

[0023] The second plug-in box is movably plugged into the top of the first plug-in box;

[0024] Two straight cylinders are fixed to the center of the first plug-in box and the second plug-in box respectively, and the two straight cylinders are plugged into each other. Light enters the one-way frame after passing through the inside of the straight cylinders.

[0025] The connection between the first and second plug-in boxes allows adjustment of the length of the two straight cylinders, thereby regulating the amount of light entering the one-way frame. When the common length of the two straight cylinders is shortened, more external light can enter the one-way frame, resulting in greater brightness inside the one-way frame and making judgments more obvious. When the common length of the two straight cylinders is increased, the amount of light entering decreases, ensuring that only light directly hitting the straight cylinders can enter, thus improving the accuracy of detecting whether the light source is on.

[0026] Preferably, the light amplification unit further includes:

[0027] The inner walls of the straight cylinders are all coated with a black light-absorbing material.

[0028] Preferably, the light amplification unit further includes:

[0029] A support rod is fixed to the bottom of the inside of the enclosed cylinder, and its top extends through the halo plate;

[0030] A spherical cover is fixed to the top of the support rod. The top of the spherical cover has a circular hole for light to pass through, and the inner wall of the spherical cover is provided with a silver plating layer.

[0031] Multiple openings are evenly distributed on the sidewall of the spherical cover.

[0032] Preferably, the light amplification unit further includes:

[0033] The mounting box is fixedly installed on the back side wall of the frame;

[0034] The first motor is installed inside the mounting box and drives the one-way frame to rotate via its output shaft, thereby rotating the closed cylinder to adjust the orientation of the top port.

[0035] Preferably, the bidirectional detection unit includes:

[0036] Mounting bracket, which is fixedly installed inside the frame;

[0037] A light-transmitting channel is formed inside the mounting base;

[0038] The second ambient light sensor is rotatably mounted inside the light-transmitting channel and located in the middle of the light-transmitting channel;

[0039] The second motor, installed inside the frame, is used to drive the second ambient light sensor to rotate via its output shaft.

[0040] Preferably, the bidirectional detection unit further includes:

[0041] The enclosure is fixed to the side wall of the frame, with one end connected to the light-transmitting channel;

[0042] The arc-shaped connecting box, made of transparent material, is fixed to the outer wall of the one-way frame. The outer wall is arc-shaped and slides along the arc edge to the top end of the enclosure box.

[0043] A light-blocking coating is applied to the outer wall of the arc-shaped connecting box, avoiding the connection point between the arc-shaped connecting box and the enclosure box.

[0044] Preferably, it further includes:

[0045] When the first ambient light sensor detects a change in light, the control unit controls the bidirectional detection unit to start.

[0046] When the bidirectional detection unit rotates and sequentially detects changes in the light at the front and back detection positions, and when the light at the front detection position changes, if the light dims, the control unit sends a brightness reduction command to the drive circuit; if the light brightens, the control unit sends a brightness increase command to the drive circuit.

[0047] Preferably, it further includes:

[0048] When the first ambient light sensor detects frequent changes in ambient light, the bidirectional detection unit of the control unit is activated;

[0049] When the bidirectional detection unit starts rotating to the rear detection position to detect ambient light, the control unit generates a judgment that there is no external light source. At this time, the control unit does not issue real-time instructions on the changes in ambient light detected by the first ambient light sensor.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] By assessing ambient light and temporary obstructions, the system helps avoid frequent brightness adjustments to the display screen, thus preventing adverse effects on the user's vision and the lifespan of the display screen itself. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0053] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0054] Figure 3 This is a cross-sectional structural diagram of the light-amplifying unit of the present invention.

[0055] Figure 4 For the present invention Figure 3 A magnified structural diagram of point A in the middle.

[0056] Figure 5 This is a cross-sectional structural diagram of the bidirectional detection unit of the present invention.

[0057] Figure 6 For the present invention Figure 5 A magnified structural diagram at point B in the middle.

[0058] In the diagram: 1. Display screen body; 101. Frame; 102. Bracket; 2. First ambient light sensor; 3. Enclosed cylinder; 301. One-way frame; 302. Halo plate; 4. Straight cylinder; 401. First connector box; 402. Second connector box; 5. Support rod; 501. Spherical cover; 502. Opening; 6. Mounting box; 601. First motor; 7. Mounting base; 701. Light transmission channel; 702. Second ambient light sensor; 703. Second motor; 8. Enclosure box; 801. Arc-shaped connecting box. Detailed Implementation

[0059] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0060] like Figures 1 to 6 The adaptive dimming electronic display shown includes a display body 1, which includes a frame 101 and a bracket 102, and further includes:

[0061] Multiple first ambient light sensors 2 are divided into two groups. One group of first ambient light sensors 2 is evenly distributed and installed on the front of the frame 101, and the other group of first ambient light sensors 2 is evenly distributed and installed on the back of the frame 101.

[0062] The light amplification unit is installed on the back of the frame 101 and is used to receive and amplify the light emitted by the light source, facing the direction of the light source.

[0063] A bidirectional detection unit, mounted on the frame 101, is used to detect the light from the front and back sides respectively during the detection process, and maintains a set rotation time when switching between the front and back sides;

[0064] The control unit, installed inside the display screen body 1, is used to receive light detection information from the light amplification unit and the bidirectional detection unit and issue commands.

[0065] The driving circuit, installed inside the display body 1, is used to adjust the current or voltage supplied to the display panel of the display body 1 according to the instructions of the control unit to achieve dimming.

[0066] In the existing technology, during the dimming process of adaptive dimming electronic displays, if the user does not turn on the lights at night and uses the display, the ambient light comes from the display itself. The changes in the displayed image cause frequent changes in the ambient light, resulting in frequent brightness adjustments of the display. On the one hand, frequent brightness adjustments may affect the lifespan of the display; on the other hand, frequent adjustments can also cause visual fatigue and even damage to the user's vision.

[0067] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: During operation, the first ambient light sensor 2 can detect the light on both the front and back of the display screen body 1. When the display screen body 1 emits light itself as the main source of ambient light, the ambient light brightness on the back of the display screen body 1 is significantly lower than that on the front. At this time, the control unit can determine whether there is an ambient light source or no ambient light source, and thus reduce the brightness adjustment of the display screen body 1 by the driving circuit.

[0068] The light amplification unit can be aligned with the indoor light source, so that the light from the light source shines directly into the light amplification unit. At this time, the light amplification unit amplifies the light, making the light amplification unit bright. At this time, it can be identified that there is an ambient light source in the room. However, as for the light generated by the display body 1 itself, since the light amplification unit is not aligned, the light generated by the display body 1 will not shine directly into the light amplification unit, so the light amplification unit will not emit light. At this time, it can be determined that the indoor light source is not turned on, so there is no ambient light source.

[0069] The bidirectional detection unit can repeatedly detect light within a certain period of time, which helps to avoid light changes caused by brief obstructions, and thus avoids brightness adjustments caused by light changes due to brief obstructions, thereby reducing unnecessary brightness adjustments.

[0070] In summary, by judging the ambient light source and temporary occlusion, it is helpful to avoid frequent brightness adjustments of the display screen 1, so as to avoid adverse effects on the user's vision and also to avoid the adverse effects of frequent adjustments on the lifespan of the display screen 1.

[0071] As an optional embodiment, the light amplification unit includes:

[0072] The enclosed cylinder 3 is installed on the back of the frame 101, and the top of the enclosed cylinder 3 is provided with a top port for light to enter;

[0073] One-way frame 301 is fixed to the bottom of the closed cylinder 3 and is used to allow light to be emitted unidirectionally from the one-way frame 301, blocking a large amount of external light from directly entering the interior of the one-way frame 301;

[0074] The halo panel 302, installed inside the one-way frame 301, is made of semi-transparent material and is used to scatter incoming light to expand the light range and achieve a halo effect;

[0075] The bidirectional detection unit is turned to the back of the display screen body 1 to detect the light environment inside the one-way frame 301;

[0076] The light generated by the indoor light source shines directly through the enclosed cylinder 3 into the interior of the one-way frame 301. The one-way frame 301 blocks most of the light entering from the outside, while the light inside can pass through and shine out. When the indoor light source is turned on, the light enters the interior of the one-way frame 301 and is diffused and diffused by the halo plate 302, making the interior of the one-way frame 301 obviously luminous. At this time, it can be determined that the indoor light source is turned on, so that the control unit controls the normal adjustment of the brightness of the display screen body 1.

[0077] As an optional embodiment, the light amplification unit further includes:

[0078] The first plug-in box 401 is fixed in the lower interior space of the enclosed cylinder 3;

[0079] The second plug-in box 402 is movably plugged into the top of the first plug-in box 401;

[0080] Two straight cylinders 4 are fixed to the center of the first plug-in box 401 and the second plug-in box 402 respectively, and the two straight cylinders 4 are plugged into each other. After passing through the inside of the straight cylinder 4, the light enters the one-way frame 301.

[0081] The insertion function of the first insertion box 401 and the second insertion box 402 can adjust the length of the two straight cylinders 4, thereby adjusting the amount of light entering the one-way frame 301. When the common length of the two straight cylinders 4 is shortened, the amount of external light entering the one-way frame 301 increases, resulting in greater brightness inside the one-way frame 301 and making it easier to judge. When the common length of the two straight cylinders 4 is increased, the amount of light entering decreases, so that only light that is fully direct on the straight cylinders 4 can enter, thereby improving the accuracy of detecting whether the light source is on.

[0082] As an optional embodiment, the light amplification unit further includes:

[0083] The inner walls of the straight cylinder 4 are all coated with black light-absorbing material;

[0084] The black light-absorbing material on the inner wall of the straight cylinder 4 ensures that when light shines on the inner wall of the straight cylinder 4 without passing through it, it will not be reflected by the inner wall of the straight cylinder 4 and continue to pass through. Instead, it will be absorbed by the black light-absorbing material, which helps to avoid the situation where external light enters through refraction and affects the accuracy of judgment.

[0085] As an optional embodiment, the light amplification unit further includes:

[0086] Support rod 5 is fixed to the bottom of the inside of the closed cylinder 3, and its top passes through the halo plate 302;

[0087] A spherical cover 501 is fixed to the top of the support rod 5. The top of the spherical cover 501 has a circular hole for light to pass through, and the inner wall of the spherical cover 501 is provided with a silver plating layer.

[0088] Multiple openings 502 are evenly distributed on the side wall of the spherical cover 501;

[0089] When light enters the interior of the spherical cover 501, some of it is reflected onto the inner wall of the spherical cover 501 and deflected in other directions by the silver plating layer. Some of it passes directly through the opening 502 and is scattered onto the halo plate 302. This increases the angle at which light enters the halo plate 302 by increasing refraction, thereby improving the overall brightness of the halo plate 302.

[0090] As an optional embodiment, the light amplification unit further includes:

[0091] Mounting box 6 is fixedly installed on the back side wall of frame 101;

[0092] The first motor 601 is installed inside the mounting box 6. It drives the one-way frame 301 to rotate through the output shaft, thereby driving the closed cylinder 3 to rotate and adjust the orientation of the top port.

[0093] The mounting box 6 can install the first motor 601. After the first motor 601 is started, it drives the one-way frame 301 to rotate through the output shaft, thereby driving the closed cylinder 3 to rotate so that the top port faces the light source, so as to improve the detection accuracy.

[0094] As an optional embodiment, the bidirectional detection unit includes:

[0095] Mounting bracket 7 is fixedly installed inside frame 101;

[0096] The light-transmitting channel 701 is located inside the mounting base 7;

[0097] The second ambient light sensor 702 is rotatably mounted inside the light-transmitting channel 701 and is located in the middle of the light-transmitting channel 701;

[0098] The second motor 703 is installed inside the frame 101 and is used to drive the second ambient light sensor 702 to rotate via the output shaft.

[0099] The second motor 703 can drive the second ambient light sensor 702 to rotate. When the second ambient light sensor 702 faces the front, light enters through the light transmission channel 701 to detect the front. When it rotates to the back, it can detect the back. By controlling the time it takes for the second motor 703 to drive the second ambient light sensor 702 to rotate one revolution, the ambient light can be repeatedly detected within a specified time. This helps to avoid the repeated dimming of the display body 1 caused by frequent changes in light when there is only the light source of the display body 1.

[0100] As an optional embodiment, the bidirectional detection unit further includes:

[0101] The enclosure box 8 is fixed to the side wall of the frame 101, and one end is connected to the light transmission channel 701;

[0102] The arc-shaped connecting box 801 is made of transparent material and is fixed to the outer wall of the one-way frame 301. The outer wall is arc-shaped and is slidably connected to the top end of the enclosure box 8 along the arc edge.

[0103] A light-blocking coating is applied to the outer wall of the arc-shaped connecting box 801, avoiding the connection point between the arc-shaped connecting box 801 and the enclosure box 8;

[0104] The cooperation between the enclosure box 8 and the arc-shaped connecting box 801 ensures that the one-way frame 301 remains in contact when rotating to adjust its position, allowing light to pass through the enclosure box 8 and enter the second ambient light sensor 702, thus ensuring that the light can be transmitted for accurate detection.

[0105] As an optional embodiment, it also includes:

[0106] When the first ambient light sensor 2 detects a change in light, the control unit activates the bidirectional detection unit.

[0107] When the bidirectional detection unit rotates and sequentially detects changes in the light at the front and back detection positions, and when the light at the front detection position changes, if the light dims, the control unit sends a brightness reduction command to the drive circuit; if the light brightens, the control unit sends a brightness increase command to the drive circuit.

[0108] By conducting multiple tests at two locations, the dimming is prevented from being interfered with by changes in the light emitted by the main body of the display screen 1.

[0109] As an optional embodiment, it also includes:

[0110] When the first ambient light sensor 2 detects frequent changes in ambient light, the control unit's bidirectional detection unit is activated.

[0111] When the bidirectional detection unit starts rotating to the rear detection position to detect ambient light, the control unit generates a judgment that there is no external light source. At this time, the control unit does not issue real-time instructions on the changes in ambient light detected by the first ambient light sensor 2.

[0112] By judging the external light source, interference with the brightness adjustment of the display body 1 can be avoided when only the display body 1 emits light.

[0113] Working principle of the invention: During operation, the first ambient light sensor 2 can detect the light from both the front and back of the display screen body 1. When the display screen body 1 emits light itself as the main source of ambient light, the ambient light brightness on the back of the display screen body 1 is significantly lower than that on the front. At this time, the control unit can determine whether there is an ambient light source or not, and thus reduce the brightness adjustment of the display screen body 1 by the driving circuit.

[0114] The light amplification unit can be aligned with the indoor light source, so that the light from the light source shines directly into the light amplification unit. At this time, the light amplification unit amplifies the light, making the light amplification unit bright. At this time, it can be identified that there is an ambient light source in the room. However, as for the light generated by the display body 1 itself, since the light amplification unit is not aligned, the light generated by the display body 1 will not shine directly into the light amplification unit, so the light amplification unit will not emit light. At this time, it can be determined that the indoor light source is not turned on, so there is no ambient light source.

[0115] The bidirectional detection unit can repeatedly detect light within a certain period of time, which helps to avoid light changes caused by brief obstructions, and thus avoids brightness adjustments caused by light changes due to brief obstructions, thereby reducing unnecessary brightness adjustments.

[0116] In summary, by judging the ambient light source and temporary occlusion, it is helpful to avoid frequent brightness adjustments of the display screen 1, so as to avoid adverse effects on the user's vision and also to avoid the adverse effects of frequent adjustments on the lifespan of the display screen 1.

[0117] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An adaptive dimming electronic display screen, comprising a display screen body (1), the display screen body (1) comprising a frame (101) and a bracket (102), characterized in that, Also includes: Multiple first ambient light sensors (2) are divided into two groups. One group of first ambient light sensors (2) is evenly distributed and installed on the front side of the frame (101), and the other group of first ambient light sensors (2) is evenly distributed and installed on the back side of the frame (101). A light-amplifying unit is installed on the back of the frame (101) and is used to receive and amplify the light emitted by the light source, facing the direction of the light source. A bidirectional detection unit is installed on the frame (101) to detect the light from the front and back sides respectively during the detection process, and to maintain a set rotation time when switching between the front and back sides; The control unit is installed inside the main body of the display screen (1) and is used to receive light detection information from the light amplification unit and the bidirectional detection unit and issue commands. The driving circuit is installed inside the display body (1) and is used to adjust the current or voltage supplied to the display panel of the display body (1) according to the instructions of the control unit to achieve dimming.

2. The adaptive dimming electronic display screen according to claim 1, characterized in that, The light amplification unit includes: A closed tube (3) is installed on the back of the frame (101), and the top of the closed tube (3) is provided with a top port for light to enter; One-way frame (301) is fixed to the bottom of the closed cylinder (3) to allow light to be emitted unidirectionally from the one-way frame (301) and to isolate a large amount of external light from directly entering the interior of the one-way frame (301); A halo panel (302) is installed inside the one-way frame (301). It is made of a semi-transparent material and is used to scatter incoming light to expand the light range and achieve halo effect. The bidirectional detection unit is used to detect the light environment inside the one-way frame (301) after it turns to the back of the display screen body (1).

3. The adaptive dimming electronic display screen according to claim 2, characterized in that, The light amplification unit also includes: The first plug-in box (401) is fixed in the lower interior space of the enclosed cylinder (3); The second plug box (402) is movably plugged into the top of the first plug box (401); Two straight cylinders (4) are fixed at the center of the first plug-in box (401) and the second plug-in box (402) respectively, and the two straight cylinders (4) are plugged into each other. After passing through the inside of the straight cylinder (4), the light enters the one-way frame (301).

4. The adaptive dimming electronic display screen according to claim 3, characterized in that, The light amplification unit also includes: The inner wall of the straight cylinder (4) is coated with black light-absorbing material.

5. An adaptive dimming electronic display screen according to claim 4, characterized in that, The light amplification unit further includes: The support rod (5) is fixed to the bottom of the inside of the closed cylinder (3), and its top extends through the halo plate (302). A spherical cover (501) is fixed to the top of the support rod (5). The top of the spherical cover (501) is provided with a circular hole for light to pass through. The inner wall of the spherical cover (501) is provided with a silver plating layer. Multiple openings (502) are evenly distributed on the sidewall of the spherical cover (501).

6. An adaptive dimming electronic display screen according to claim 5, characterized in that, The light amplification unit further includes: The mounting box (6) is fixedly installed on the back side wall of the frame (101); The first motor (601) is installed inside the mounting box (6) and drives the one-way frame (301) to rotate through the output shaft, thereby driving the closed cylinder (3) to rotate and adjust the orientation of the top port.

7. An adaptive dimming electronic display screen according to claim 2, characterized in that, The bidirectional detection unit includes: Mounting base (7) is fixedly installed inside the frame (101); A light-transmitting channel (701) is formed inside the mounting base (7); The second ambient light sensor (702) is rotatably mounted inside the light-transmitting channel (701) and located in the middle of the light-transmitting channel (701); The second motor (703) is installed inside the frame (101) and is used to drive the second ambient light sensor (702) to rotate via the output shaft.

8. An adaptive dimming electronic display screen according to claim 7, characterized in that, The bidirectional detection unit further includes: The enclosure box (8) is fixed to the side wall of the frame (101), and one end is connected to the light-transmitting channel (701). The arc-shaped connecting box (801) is made of transparent material and is fixed to the outer wall of the one-way frame (301). The outer wall is arc-shaped and is slidably connected to the top end of the enclosure box (8) along the arc edge. A light-blocking coating is applied to the outer wall of the arc-shaped connecting box (801) and avoids the connection position between the arc-shaped connecting box (801) and the enclosure box (8).

9. An adaptive dimming electronic display screen according to claim 8, characterized in that, Also includes: When the first ambient light sensor (2) detects a change in light, the control unit controls the bidirectional detection unit to start. When the bidirectional detection unit rotates and sequentially detects changes in the light at the front and back detection positions, and when the light at the front detection position changes, if the light dims, the control unit sends a brightness reduction command to the drive circuit; if the light brightens, the control unit sends a brightness increase command to the drive circuit.

10. An adaptive dimming electronic display screen according to claim 9, characterized in that, Also includes: When the first ambient light sensor (2) detects frequent changes in ambient light, the bidirectional detection unit of the control unit is activated; When the bidirectional detection unit starts rotating to the back detection position to detect ambient light, the control unit generates a judgment that there is no external light source. At this time, the control unit does not issue real-time instructions on the changes in ambient light detected by the first ambient light sensor (2).

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