CN106205403B

CN106205403B - LED display screen and visual angle adjusting method thereof

Info

Publication number: CN106205403B
Application number: CN201610621967.0A
Authority: CN
Inventors: 李漫铁; 薛元亭
Original assignee: Ledman Optoelectronic Co Ltd
Current assignee: Ledman Optoelectronic Co Ltd
Priority date: 2016-08-01
Filing date: 2016-08-01
Publication date: 2023-03-07
Anticipated expiration: 2036-08-01
Also published as: CN106205403A

Abstract

The invention relates to an LED display screen and a visual angle adjusting method thereof. This LED display screen includes: the lamp panel comprises a plurality of LEDs which are arranged at intervals along a first axis direction and are arranged in multiple rows, and each row comprises a plurality of LEDs which are arranged at intervals along a second axis direction; the mask is provided with a plurality of through holes, the mask is arranged on one side of the lamp panel, which is provided with the LEDs, and each LED is exposed from one through hole; the light barriers are arranged on the mask and are arranged at intervals in a plurality of rows along the first axis direction, each row of light barriers comprises a plurality of light barriers arranged at intervals along the second axis direction, and the number of LEDs between two adjacent light barriers is more than or equal to 2 along the first axis direction or the second axis direction; and the control system is connected with the LEDs and is used for enabling the LEDs between two adjacent light barriers to present different brightness. The LEDs between two adjacent light barriers are enabled to present different brightness through the control system, and the horizontal light-emitting visual angle or the vertical light-emitting visual angle of the LED display screen can be adjusted under the light blocking effect of the light barriers.

Description

LED display screen and visual angle adjusting method thereof

Technical Field

The invention relates to the technical field of display screens, in particular to an LED display screen and a visual angle adjusting method thereof.

Background

When people watch the LED display screen, the watching angle can be generally divided into a horizontal angle and a vertical angle with respect to the normal plane, the horizontal angle can be divided into a left angle and a right angle, and the vertical angle can be divided into an upper angle (a downward angle) and a lower angle (a upward angle).

The visual angle of the traditional LED display screen is of a symmetrical structure, namely the left visual angle and the right visual angle are symmetrical relative to a normal plane, and the upper visual angle and the lower visual angle are also symmetrical relative to the normal plane. The left and right visual angles are used as an example, the left visual angle and the right visual angle are symmetrical relative to a normal plane, and in the range of the horizontal visual angle, the crowd on the left side of the LED display screen, the crowd in the middle or the crowd on the right side can view the content displayed on the LED display screen, so that the crowd in a certain area can not view the content displayed on the LED display screen, and meanwhile, the crowd in other areas can not view the content displayed on the LED display screen. That is, the viewing angle of the conventional LED display screen is not adjustable, and the viewing effect of a specific direction cannot be realized, so that ineffective brightness is caused, and brightness is wasted. When people in a certain area want to watch the content displayed on the LED display screen, and people in other areas do not want to watch the content displayed on the LED display screen, the light emitted from the LED display screen causes not only a waste of brightness but also a kind of light pollution for people who do not want to watch the content displayed on the LED display screen.

In addition, taking the up-down viewing angle as an example, the LED display screen is usually installed at a certain height, and the viewing angle of people is upward viewing. Therefore, the brightness of the lower viewing angle below the normal plane is effective visible brightness, and the brightness of the upper viewing angle above the normal plane is ineffective brightness, which results in wasted brightness in the upper viewing angle range, and light pollution caused by the light of the upper viewing angle.

Disclosure of Invention

Therefore, the LED display screen with adjustable light-emitting angle and the method for adjusting the viewing angle thereof are needed.

An LED display screen comprising:

the lamp panel comprises a plurality of LEDs, the LEDs are arranged at intervals along a first axis direction to form a plurality of rows, and each row of LEDs comprises a plurality of LEDs arranged at intervals along a second axis direction;

the mask is provided with a plurality of through holes, the mask is arranged on one side of the lamp panel, which is provided with the LEDs, and each LED is exposed from one through hole;

the light barriers are arranged on one side, away from the lamp panel, of the mask, the light barriers are arranged at intervals along a first axial direction to form a plurality of rows, each row of light barriers comprises a plurality of light barriers arranged at intervals along a second axial direction, and the number of LEDs between every two adjacent light barriers is more than or equal to 2 along the first axial direction or the second axial direction; and

and the control system is connected with the LEDs and is used for enabling the LEDs between two adjacent light barriers to present different brightness.

In the LED display screen, the LEDs between two adjacent light barriers are enabled to present different brightness through the control system, and under the light blocking effect of the light barriers, the horizontal luminous visual angle or the vertical luminous visual angle of the LED display screen can be adjusted, so that the condition that the crowd on one side watches but the crowd not needing to watch is met, the light pollution is effectively avoided, and the watching effect of specific pointing is improved.

In one embodiment, the distance between the light emitting point of the LED located between two adjacent light-blocking panels and located at the end and the light-blocking panel close to the light-blocking panel is the same as the distance between the light emitting point of the LED located between two adjacent light-blocking panels and located at the other end and the light-blocking panel close to the light-blocking panel.

In one embodiment, the LEDs with the same light emitting color are arranged between two adjacent light barriers, at least six LEDs form one dimming unit of the LED display screen, six light barriers are arranged on the periphery of each dimming unit, and each dimming unit comprises LEDs with three colors of red, green and blue.

In one embodiment, the LEDs with the same light-emitting color are arranged between two adjacent light barriers, the LEDs between the two adjacent light barriers form a dimming unit of the LED display screen, the two light barriers are arranged on the periphery of each dimming unit, and the LEDs in each dimming unit are formed by integrating lamp beads with red, green and blue colors.

In the LED display screen, the first axis direction is a horizontal direction, the second axis direction is a vertical direction, the number of LEDs between two adjacent light barriers along the first axis direction is more than or equal to 2, and the two adjacent light barriers are respectively a left light barrier and a right light barrier;

the control system controls the rightmost LED between the left light barrier and the right light barrier to be turned off, and controls the leftmost LED between the left light barrier and the right light barrier to be turned on, wherein the horizontal distance between the light-emitting point of the leftmost LED and the left light barrier is A1, the horizontal distance between the light-emitting point of the leftmost LED and the right light barrier is A2, the vertical distance between the light-emitting point of the leftmost LED and the end face, away from the lamp panel, of the left light barrier is B, the vertical line passing through the light-emitting point of the leftmost LED is a normal line, relative to the normal line, the left visual angle is theta 1, the right visual angle is theta 2, A1= tan theta 1 · B, and A2= tan theta 2 · B;

or the control system controls the leftmost LED between the left light barrier and the right light barrier to be turned off, and controls the rightmost LED between the left light barrier and the right light barrier to be turned on, wherein the horizontal distance between the light-emitting point of the rightmost LED and the left light barrier is A1, the horizontal distance between the light-emitting point of the rightmost LED and the right light barrier is A2, the vertical distance between the light-emitting point of the rightmost LED and the end surface of the right light barrier far away from the lamp panel is B, a vertical line passing through the light-emitting point of the rightmost LED is a normal line, relative to the normal line, the left visual angle is θ 1, the right visual angle is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B;

or the control system controls the leftmost and rightmost LEDs between the left light barrier and the right light barrier to be simultaneously turned on, wherein a horizontal distance between a light emitting point of the rightmost LED and the left light barrier is A1, a horizontal distance between a light emitting point of the leftmost LED and the right light barrier is A2, a vertical distance between the light emitting point of the LED and an end surface of the light barrier far away from the lamp panel is B, a vertical line passing through the light emitting point of the rightmost LED is a right normal line, relative to the right normal line, a left visual angle is θ 1, a vertical line passing through the light emitting point of the leftmost LED is a left normal line, relative to the left normal line, the right visual angle is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B.

In one embodiment, the control system controls the leftmost and rightmost LEDs between the left and right light barriers to be lit simultaneously, and the control system controls the leftmost and rightmost LEDs between the left and right light barriers to exhibit different brightness.

In one embodiment, the number of the LEDs between two adjacent light barriers is more than or equal to 3;

the control system controls the middle LED to be turned off;

or the control system controls the middle LED to be lightened;

alternatively, the control system controls the middle LED to be turned on, and the brightness of the middle LED is different from the brightness of the other LEDs which are turned on.

In the LED display screen, the first axis direction is a horizontal direction, the second axis direction is a vertical direction, the number of LEDs between two adjacent light baffles along the second axis direction is more than or equal to 2, and the two adjacent light baffles are respectively an upper light baffle and a lower light baffle;

the control system controls the top LED between the upper light baffle plate and the lower light baffle plate to be turned off, and controls the bottom LED between the upper light baffle plate and the lower light baffle plate to be turned on, wherein the vertical distance between the light emitting point of the bottom LED and the lower light baffle plate is A1, the vertical distance between the light emitting point of the bottom LED and the upper light baffle plate is A2, the horizontal distance between the light emitting point of the bottom LED and the end face, away from the lamp panel, of the lower light baffle plate is B, the horizontal line passing through the light emitting point of the bottom LED is a normal line, relative to the normal line, the elevation angle is theta 1, the depression angle is theta 2, A1= tan theta 1 · B, and A2= tan theta 2 · B;

or the control system controls the bottommost LED between the upper light baffle plate and the lower light baffle plate to be turned off, and controls the topmost LED between the upper light baffle plate and the lower light baffle plate to be turned on, wherein the vertical distance between the light-emitting point of the topmost LED and the lower light baffle plate is A1, the vertical distance between the light-emitting point of the topmost LED and the upper light baffle plate is A2, the horizontal distance between the light-emitting point of the topmost LED and the end face, away from the lamp plate, of the upper light baffle plate is B, the horizontal line passing through the light-emitting point of the topmost LED is a normal line, relative to the normal line, the elevation angle is theta 1, the depression angle is theta 2, A1= tan theta 1 · B, and A2= tan theta 2 · B;

or the control system controls the uppermost and lowermost LEDs between the upper and lower light barriers to be simultaneously turned on, wherein a vertical distance between a light emitting point of the uppermost LED and the lower light barrier is A1, a vertical distance between a light emitting point of the lowermost LED and the upper light barrier is A2, a horizontal distance between the light emitting point of the LED and an end surface of the light barrier away from the lamp panel is B, a horizontal line of the light emitting point of the uppermost LED is an upper normal line, a top view angle is θ 1 with respect to the upper normal line, a horizontal line of the light emitting point of the lowermost LED is a lower normal line, and a top view angle is θ 2 with respect to the lower normal line, A1= tan θ 1 · B, and A2= tan θ 2 · B.

In one embodiment, the control system controls the uppermost and lowermost LEDs between the upper and lower light-shielding plates to be simultaneously turned on, and the control system controls the uppermost and lowermost LEDs between the upper and lower light-shielding plates to exhibit different brightness.

the control system controls the middle LED to be turned off;

or the control system controls the middle LED to be lightened;

Drawings

FIG. 1 is a schematic structural diagram of an LED display screen according to an embodiment;

FIG. 2 is an arrangement of LEDs and a light barrier according to one embodiment;

FIG. 3 is an arrangement of LEDs and a light barrier according to another embodiment;

FIG. 4 is a schematic diagram of a left lamp being turned on and a right lamp being turned off at a horizontal lighting angle;

FIG. 5 is a schematic view showing the left lamp turned off and the right lamp turned on at a horizontal lighting angle;

FIG. 6 is a schematic diagram of the simultaneous illumination of left and right lamps at a horizontal lighting viewing angle;

FIG. 7 is a schematic view showing that the lower lamp is turned on and the upper lamp is turned off at a vertical lighting angle;

FIG. 8 is a schematic diagram of the lower lamp turning off and the upper lamp turning on under the vertical lighting angle;

FIG. 9 is a schematic view of the upper and lower lamps simultaneously lit at a vertical lighting viewing angle;

FIG. 10 is a schematic diagram of a dimming unit according to an embodiment under a horizontal lighting view;

fig. 11 is a schematic diagram of a dimming unit according to an embodiment under a vertical lighting viewing angle.

Detailed Description

The LED display screen and the method for adjusting the viewing angle thereof will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2 and 3, an embodiment of the LED display screen 10 includes a lamp panel 100, a mask 200, a light barrier 300 and a control system (not shown).

The light panel 100 includes a plurality of LEDs 110. The plurality of LEDs 110 are arranged in a plurality of rows at intervals along a first axis direction (X axis direction, i.e. horizontal direction), and each row of LEDs 110 includes a plurality of LEDs 110 arranged at intervals along a second axis direction (Y axis direction, i.e. vertical direction).

The mask 200 is provided with a plurality of through holes 210. The cover 200 is disposed on a side of the lamp panel 100 having the LEDs 110, and each LED110 is exposed from a through hole 210.

The light barriers 300 are provided in a plurality on the side of the visor 200 remote from the light panel 100. The light barriers 300 are arranged at intervals in multiple rows along the first axis direction, and each row of light barriers 300 comprises a plurality of light barriers 300 arranged at intervals along the second axis direction. And the number of the LEDs 110 between two adjacent light-blocking panels 300 is greater than or equal to 2 in the first axial direction or the second axial direction. Specifically, as shown in fig. 2, 2 LEDs 110 are provided between two adjacent light-blocking panels 300 in the first axial direction. As shown in fig. 3, 2 LEDs 110 are provided between two adjacent light-blocking panels 300 in the second axial direction.

The control system is connected with the LEDs 110, and is used for enabling the LEDs between two adjacent light barriers 300 to present different brightness. It should be noted that, making the LEDs between two adjacent light barriers 300 exhibit different brightness refers to any one of the following situations: (1) Part of the LEDs between two adjacent light barriers 300 are turned on (if the number of the turned-on LEDs is greater than or equal to 2, the brightness of the turned-on LEDs may be the same, may be partially the same, or may be different), and part of the LEDs are turned off; (2) The LEDs between two adjacent light barriers 300 are all lit, but the brightness of some LEDs is greater than that of one or more other LEDs.

In the above LED display screen 10, the LED between two adjacent light barriers 300 presents different brightness through the control system, and under the light blocking effect of the light barriers 300, the horizontal or vertical light emitting viewing angle of the LED display screen 10 can be adjusted, so that the one-sided crowd can be watched without affecting the crowd which does not need to be watched, the light pollution is effectively avoided, and the watching effect of the specific direction is improved.

The following description will be made by taking "adjustment of the horizontal light emission viewing angle of the LED display panel 10" and "adjustment of the vertical light emission viewing angle of the LED display panel 10" as examples.

As shown in fig. 4 to 6, 2 LEDs 110 are provided between two adjacent light-blocking panels 300 in the first axial direction, that is, 2 LEDs 110 are provided between two adjacent light-blocking panels 300 in the horizontal direction. The two adjacent light barriers are a left light barrier 300a and a right light barrier 300b, respectively, the LED110 close to the left light barrier 300a is a left lamp 110a, and the LED110 close to the right light barrier 300b is a right lamp 110b.

(1.1) as shown in fig. 4, when the control system controls the left lamp 110a to be turned on and the right lamp 110b to be turned off, the right viewing angle of the left lamp 110a can be increased, and the left light barrier 300a can block the left viewing angle of the left lamp 110a, so as to control the horizontal light-emitting viewing angle of the left lamp 110a to be located on the right side of the normal plane of the LED display screen 10. The horizontal distance between the light emitting point 110A1 of the left lamp 110a and the left light barrier 300a is A1, the horizontal distance between the light emitting point 110A1 of the left lamp 110a and the right light barrier 300B is A2, the vertical distance between the light emitting point 110A1 of the left lamp 110a and the end surface of the left light barrier 300a away from the lamp panel 100 is B, a vertical line passing through the light emitting point 110A1 of the left lamp 110a is a normal 110A2, the left visual angle is θ 1, the right visual angle is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B with respect to the normal 110 A2.

(1.2) as shown in fig. 5, when the control system controls the left lamp 110a to be turned off and the right lamp 110b to be turned on, the left visual angle of the right lamp 110b can be increased, and the right light-blocking plate 300b can block the right visual angle of the right lamp 110b, so that the horizontal luminous visual angle of the right lamp 110b is controlled to be positioned on the left side of the normal plane of the LED display screen 10. The horizontal distance between the light emitting point 110B1 of the right lamp 110B and the left light barrier 300a is A1, the horizontal distance between the light emitting point 110B1 of the right lamp 110B and the right light barrier 300B is A2, the vertical distance between the light emitting point 110B1 of the right lamp 110B and the end surface of the right light barrier 300B away from the lamp panel 100 is B, a vertical line passing through the light emitting point 110B1 of the right lamp 110B is a normal 110B2, the left visual angle is θ 1, the right visual angle is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B.

(1.3) as shown in fig. 6, when the control system controls the left lamp 110a and the right lamp 110b to be both lit, the left light barrier 300a may block the left viewing angle of the left lamp 110a, and the right light barrier 300b may block the right viewing angle of the right lamp 110a, so as to control the horizontal light emitting viewing angles of the left lamp 110a and the right lamp 110b to be located in the center of the normal plane of the LED display screen 10. The horizontal distance between the light emitting point 110B1 of the right lamp 110B and the left light barrier 300a is A1, the horizontal distance between the light emitting point 110A1 of the left lamp 110a and the right light barrier 300B is A2, the vertical distance between the light emitting point 110B1 of the right lamp 110B and the end surface of the right light barrier 300B away from the lamp panel 100 is B (the vertical distance between the light emitting point 110A1 of the left lamp 110a and the end surface of the left light barrier 300a away from the lamp panel 100 is also B), the vertical line passing through the light emitting point 110B1 of the right lamp 110B is a right normal 110B2, the left viewing angle is θ 1 with respect to the right normal 110B2, the vertical line passing through the light emitting point 110A1 of the left lamp 110a is A2, the right viewing angle is θ 2 with respect to the left normal 110A2, A1= tan θ 1 · B, and A2= tan θ 2 · B.

When the control system controls the left lamp 110a and the right lamp 110b to be both lighted, the control system can also make the left lamp 110a and the right lamp 110b present different brightness at the same time, so as to realize the difference of left and right visual angles. For example, if the brightness of the right viewing angle needs to be enlarged, the brightness of the left lamp 110a can be increased; if the brightness of the left viewing angle needs to be enlarged, the brightness of the right lamp 110b can be increased.

In the above LED display screen 10, the LEDs between two adjacent light barriers 300 are made to have different brightness by the control system, and the horizontal light-emitting viewing angle of the LED display screen 10 can be adjusted under the light blocking effect of the light barriers 300.

In other embodiments, when there are 3 or more LEDs 110 between two adjacent light-blocking panels 300 in the horizontal direction, there are also the following cases in the three cases (1.1), (1.2) and (1.3) described above:

(1.4) when the control system controls the left lamp 110a to be turned on and the right lamp 110b to be turned off, simultaneously controlling the middle lamp to be turned off; or, when the control system controls the left lamp 110a to be turned on and the right lamp 110b to be turned off, the control system simultaneously controls the middle lamp to be turned on (when the left lamp 110a and the middle lamp are simultaneously turned on, the left lamp 110a still plays a dominant role); alternatively, when the control system controls the left lamp 110a to be turned on and the right lamp 110b to be turned off, the middle lamp is simultaneously controlled to be turned on, and the brightness of the middle lamp is different from that of the left lamp 110 a. In these three cases, it is also achieved that the horizontal lighting viewing angle of the lighted lamp is controlled to be located at the right side of the normal plane of the LED display screen 10, the principle is the same as the above (1.1), and this is not repeated here.

(1.5) when the control system controls the left lamp 110a to be turned off and the right lamp 110b to be turned on, simultaneously controlling the middle lamp to be turned off; or, when the control system controls the left lamp 110a to be turned off and the right lamp 110b to be turned on, the control system simultaneously controls the middle lamp to be turned on (when the right lamp 110b is turned on simultaneously with the middle lamp, the dominant lamp is still the right lamp 110 b); or, when the control system controls the left lamp 110a to be turned off and the right lamp 110b to be turned on, the control system simultaneously controls the middle lamp to be turned on, and the brightness of the middle lamp is different from that of the right lamp 110b. In the three cases, it is also achieved that the horizontal lighting viewing angle of the lighted lamp is controlled to be located on the left side of the normal plane of the LED display screen 10, and the principle is the same as the above (1.2), and is not repeated here.

(1.6) when the control system controls the left lamp 110a and the right lamp 110b to be turned on, simultaneously controlling the middle lamp to be turned off; or, when the control system controls the left lamp 110a and the right lamp 110b to be turned on, the control system controls the middle lamp to be turned on at the same time (when the left lamp 110a, the right lamp 110b and the middle lamp are turned on at the same time, the left lamp 110a and the right lamp 110b still play a leading role); alternatively, when the control system controls both the left lamp 110a and the right lamp 110b to be turned on, the middle lamp is simultaneously controlled to be turned on, and the brightness of the middle lamp is different from the brightness of at least one of the left lamp 110a and the right lamp 110b. In these three cases, it is also achieved that the horizontal lighting viewing angle of the lighted lamp is located in the center of the normal plane of the LED display screen 10, and the principle is the same as (1.3) above, and is not repeated here.

7-9, there are 2 LEDs 110 between two adjacent light-blocking panels 300 along the second axis direction, that is, there are 2 LEDs 110 between two adjacent light-blocking panels 300 along the vertical direction. The two adjacent light barriers are an upper light barrier 300c and a lower light barrier 300d, respectively, the LED110 near the upper light barrier 300c is an upper lamp 110c, and the LED110 near the lower light barrier 300d is a lower lamp 110d.

(2.1) as shown in fig. 7, when the control system controls the upper lamp 110c to be turned off and the lower lamp 110d to be turned on, the depression angle of the lower lamp 110d can be increased, and the lower light-blocking plate 300d can block the depression angle of the lower lamp 110d, so as to control the vertical light-emitting angle of the lower lamp 110d to be located at the upper side (i.e. depression angle) of the normal plane of the LED display screen 10. Here, a vertical distance between the light emitting point 110d1 of the lower lamp 110d and the lower light shielding plate 300d is A1, a vertical distance between the light emitting point 110d1 of the lower lamp 110d and the upper light shielding plate 300c is A2, a horizontal distance between the light emitting point 110d1 of the lower lamp 110d and an end surface of the lower light shielding plate 300d away from the lamp panel 100 is B, a horizontal line passing through the light emitting point 110d1 of the lower lamp 110d is a normal 110d2, a vertical angle is θ 1 with respect to the normal 110d2, a horizontal angle is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B.

(2.2) as shown in fig. 8, when the control system controls the upper lamp 110c to be turned on and the lower lamp 110d to be turned off, the upward viewing angle of the upper lamp 110c can be increased, and the upward light-blocking plate 300c can block the downward viewing angle of the upper lamp 110c, so as to control the vertical light-emitting viewing angle of the upper lamp 110c to be located at the lower side (i.e., the upward viewing angle) of the normal plane of the LED display screen 10. Here, a vertical distance between the light emitting point 110c1 of the upper lamp 110c and the lower light blocking plate 300d is A1, a vertical distance between the light emitting point 110c1 of the upper lamp 110c and the upper light blocking plate 300c is A2, a horizontal distance between the light emitting point 110c1 of the upper lamp 110c and an end surface of the upper light blocking plate 300c away from the lamp panel 100 is B, a horizontal line passing through the light emitting point 110c1 of the upper lamp 110c is a normal 110c2, a vertical angle is θ 1 with respect to the normal 110c2, a horizontal angle is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B.

(2.3) as shown in fig. 9, when the control system controls both the upper lamp 110c and the lower lamp 110d to be turned on, the upper light-blocking plate 300c may block a downward viewing angle of the upper lamp 110c, and the lower light-blocking plate 300d may block a upward viewing angle of the lower lamp 110d, so as to control a vertical light-emitting viewing angle of the upper lamp 110c and the lower lamp 110d to be located in a center direction of a normal plane of the LED display screen 10. Here, a vertical distance between the light emitting point 110c1 of the upper lamp 110c and the lower light-blocking plate 300d is A1, a vertical distance between the light emitting point 110d1 of the lower lamp 110d and the upper light-blocking plate 300c is A2, a horizontal distance between the light emitting point 110d1 of the lower lamp 110d and an end surface of the lower light-blocking plate 300d distant from the lamp panel 100 is B (a horizontal distance between the light emitting point 110c1 of the upper lamp 110c and an end surface of the upper light-blocking plate 300c distant from the lamp panel 100 is also B), a horizontal line passing through the light emitting point 110d1 of the lower lamp 110d is a lower normal line 110d2, a bottom viewing angle with respect to the lower normal line 110d2 is θ 1, a horizontal line passing through the light emitting point 110c1 of the upper lamp 110c is an upper normal line 110c2, and a top viewing angle with respect to the upper normal line 110c2 is θ 2, A1= tan θ 1 · B, and A2= tan θ 2 · B, A2= tan θ 2 · B.

When the control system controls the upper lamp 110c and the lower lamp 110d to be both lighted, the control system can also make the upper lamp 110c and the lower lamp 110d present different brightness at the same time to realize the difference of the vertical viewing angles. For example, if the brightness of the upward viewing angle needs to be enlarged, the brightness of the upper lamp 110c can be increased; if it is necessary to increase the brightness of the depression angle, the brightness of the lower lamp 110d may be increased.

In other embodiments, when there are 3 and 3 or more LEDs 110 between two adjacent light-blocking panels 300 in the vertical direction, in the above three cases (2.1), (2.2) and (2.3), there are also the following cases:

(2.4) when the control system controls the upper lamp 110c to be turned off and the lower lamp 110d to be turned on, simultaneously controlling the middle lamp to be turned off; alternatively, when the control system controls the upper lamp 110c to be turned off and the lower lamp 110d to be turned on, the control system simultaneously controls the middle lamp to be turned on (when the lower lamp 110d is turned on simultaneously with the middle lamp, the lower lamp 110d still plays a leading role); or, when the control system controls the upper lamp 110c to be turned off and the lower lamp 110d to be turned on, the control system simultaneously controls the middle lamp to be turned on, and the brightness of the middle lamp is different from that of the lower lamp 110 d; alternatively, when the control system controls the middle lamp to be turned on and the upper lamp 110c and the lower lamp 110d to be turned off. In the four cases, it is also achieved that the vertical lighting angle of the lighted lamp is located on the upper side of the normal plane of the LED display screen 10, and the principle is the same as the above (2.1), and is not repeated here.

(2.5) when the control system controls the upper lamp 110c to be turned on and the lower lamp 110d to be turned off, simultaneously controlling the middle lamp to be turned off; alternatively, when the control system controls the upper lamp 110c to be turned on and the lower lamp 110d to be turned off, the control system simultaneously controls the middle lamp to be turned on (when the upper lamp 110c and the middle lamp are simultaneously turned on, the upper lamp 110c still plays a leading role); alternatively, when the control system controls the upper lamp 110c to be turned on and the lower lamp 110d to be turned off, the middle lamp is simultaneously controlled to be turned on, and the brightness of the middle lamp is different from that of the upper lamp 110 c. In these three cases, it is also achieved that the vertical lighting angle of the lighted lamp is located at the lower side of the normal plane of the LED display screen 10, and the principle is the same as the above (2.2), and is not repeated here.

(2.6) when the control system controls the upper lamp 110c and the lower lamp 110d to be turned on, simultaneously controlling the middle lamp to be turned off; alternatively, when the control system controls both the upper lamp 110c and the lower lamp 110d to be turned on, the middle lamp is simultaneously controlled to be turned on (when the upper lamp 110c, the lower lamp 110d and the middle lamp are simultaneously turned on, the upper lamp 110c and the lower lamp 110d still play a dominant role); alternatively, when the control system controls both the left lamp 110a and the right lamp 110b to be turned on, the middle lamp is simultaneously controlled to be turned on, and the brightness of the middle lamp is different from the brightness of at least one of the upper lamp 110c and the lower lamp 110d. In the three cases, it can also be achieved that the vertical lighting angle of the lighted lamp is controlled to be located in the center direction of the normal plane of the LED display screen 10, and the principle is the same as the above (2.3), and is not repeated here.

In the above (one) and (two), the value range of θ 1 is greater than 0 ° and smaller than 90 °, and the value range of θ 2 is greater than 0 ° and smaller than 90 °.

Further, in the present embodiment, the distance between the light emitting point of the LED110 located between two adjacent light-blocking panels 300 and located at the end and the light-blocking panel 300 close thereto is the same as the distance between the light emitting point of the LED110 located between two adjacent light-blocking panels 300 and located at the other end and the light-blocking panel 300 close thereto. In the present embodiment, the structure shown in fig. 4 is taken as an example, that is, the horizontal distance between the light emitting points of the left light barrier 300a and the left light 110a is the same as the horizontal distance between the light emitting points of the right light barrier 300b and the right light 110b. Taking the structure shown in fig. 7 as an example, the vertical distance between the light emitting points of the upper light-shielding plate 300c and the upper lamp 110c is the same as the vertical distance between the light emitting points of the lower light-shielding plate 300d and the lower lamp 110d.

Specifically, in the present embodiment, the horizontal distance between the light emitting point of the left lamp 110a and the left light barrier 300a is 2.4 mm, and the horizontal distance between the light emitting point of the right lamp 110b and the right light barrier 300b is 2.4 mm. The horizontal distance between the light emitting point of the left lamp 110a and the light emitting point of the right lamp 110b is 10.14 mm. The vertical distance between the light-emitting point of the LED110 and the end surface of the light barrier 300 away from the light panel 100 is 5.23 mm.

Specifically, in the present embodiment, the vertical distance between the light emitting point of the upper lamp 110c and the upper light shielding plate 300c is 2.4 mm, the vertical distance between the light emitting point of the lower lamp 110d and the lower light shielding plate 300d is 2.4 mm, and the vertical distance between the light emitting point of the lower lamp 110d and the light emitting point of the upper lamp 110c is 10.14 mm. The horizontal distance between the light emitting point of the LED110 and the end surface of the light barrier 300 away from the lamp panel 100 is 5.23 mm.

Further, in the present embodiment, each LED110 emits monochromatic light, and specifically, the LED110 is a LAMP-type LED. Further, in the present embodiment, the LED display panel 10 is a full-color LAMP LED display panel, and in this case, the LAMP panel 100 is a full-color LAMP panel. In other embodiments, the LED display screen 10 may also be a monochromatic display screen, and in this case, the lamp panel is a monochromatic lamp panel.

Specifically, as shown in fig. 10 and 11, the same LEDs 110 with the same light emitting color are disposed between two adjacent light barriers 300, and at least six LEDs 110 form one dimming unit of the LED display screen 10, six light barriers 300 are disposed at the periphery of each dimming unit, and each dimming unit includes three colors of red, green, and blue LEDs 110. That is, each dimming cell includes two red light emitting LEDs 110, two blue light emitting LEDs 110, and two green light emitting LEDs 110. Specifically, in the present embodiment, two LEDs 110 with the same emission color are disposed between two adjacent light-blocking panels 300, and every six LEDs 110 form a dimming unit of the LED display screen 10. In other embodiments, three or more LEDs 110 with the same emission color may be disposed between two adjacent light-blocking panels 300, and every multiple of six (e.g., 12, 18, etc.) LEDs 110 form a dimming unit of the LED display screen 10.

As shown in fig. 10, when the three LEDs 110 on the left are controlled to emit red light, green light, and blue light, respectively, and the three LEDs 110 on the right are controlled to be turned off, the horizontal light-emitting viewing angle of the LED display screen 10 is located on the right side of the normal plane. When the three LEDs 110 on the right side are controlled to emit red light, green light, and blue light, respectively, and the three LEDs 110 on the left side are controlled to be turned off, the horizontal light-emitting viewing angle of the LED display screen 10 is located on the left side of the normal plane.

As shown in fig. 11, when the upper three LEDs 110 are controlled to emit red light, green light, and blue light, respectively, and the lower three LEDs 110 are controlled to be turned off, the vertical light emission viewing angle of the LED display screen 10 is located at the lower side of the normal plane. When the lower three LEDs 110 are controlled to emit red light, green light, and blue light, respectively, and the upper three LEDs 110 are controlled to be turned off, the vertical light emitting viewing angle of the LED display screen 10 is located at the upper side of the normal plane.

In other embodiments, each LED110 may also be formed by integrating beads with three colors of red, green and blue, specifically, the LED110 is an SMD type LED. Further, in the present embodiment, the LED display panel 10 is a full-color SMD LED display panel, and in this case, the lamp panel 100 is a full-color lamp panel. In other embodiments, the LED display screen 10 may also be a monochromatic display screen, and in this case, the lamp panel is a monochromatic lamp panel.

Specifically, the same LEDs 110 with the same light emitting color are arranged between two adjacent light barriers 300, the LEDs 110 between two adjacent light barriers 300 form a dimming unit of the LED display screen 10, two light barriers 300 are arranged on the periphery of each dimming unit, and the LEDs 110 in each dimming unit are formed by integrating red, green and blue beads.

Specifically, in the present embodiment, two LEDs 110 with the same light emitting color are disposed between two adjacent light-blocking panels 300, and each two LEDs 110 form one dimming unit of the LED display screen 10. By controlling one LED110 in the dimming unit to be turned on and the other LED110 to be turned off, the horizontal or vertical light-emitting viewing angle of the LED display screen 10 can be adjusted. In other embodiments, three or more LEDs 110 with the same emission color may be disposed between two adjacent light-blocking panels 300.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An LED display screen, comprising:

the control system is connected with the LEDs and is used for enabling the LEDs between two adjacent light barriers to present different brightness;

the LEDs are arranged between two adjacent light barriers, wherein the LEDs at two ends in the first axial direction or the LEDs at two ends in the second axial direction are close to the light barriers at the same end;

the LEDs between two adjacent light barriers present different brightness, including any one of the following conditions:

part of LEDs between two adjacent light barriers are lightened, and part of LEDs are extinguished, wherein the brightnesses of the lightened LEDs can be the same, can also be partially the same, and can also be different; or

The LEDs between two adjacent light barriers are all lighted, but the brightness of part of the LEDs is higher than that of one or more other LEDs.

2. The LED display screen of claim 1, wherein the distance between the light-emitting point of the LED located between two adjacent light-blocking panels and at the end and the light-blocking panel adjacent thereto is the same as the distance between the light-emitting point of the LED located between two adjacent light-blocking panels and at the other end and the light-blocking panel adjacent thereto.

3. The LED display screen of claim 1, wherein the same LEDs with the same light emitting color are arranged between two adjacent light barriers, at least six LEDs form one dimming unit of the LED display screen, six light barriers are arranged at the periphery of each dimming unit, and each dimming unit comprises LEDs with three colors of red, green and blue.

4. The LED display screen of claim 1, wherein the same LEDs with the same light emitting color are arranged between two adjacent light barriers, the LEDs between two adjacent light barriers form a dimming unit of the LED display screen, two light barriers are arranged at the periphery of each dimming unit, and the LEDs in each dimming unit are formed by integrating light beads with three colors of red, green and blue.

5. The method according to claim 1, wherein in the LED display screen, the first axis direction is a horizontal direction, the second axis direction is a vertical direction, the number of LEDs between two adjacent light barriers along the first axis direction is greater than or equal to 2, and the two adjacent light barriers are a left light barrier and a right light barrier, respectively;

the control system controls the rightmost LED between the left light barrier and the right light barrier to be turned off and controls the leftmost LED between the left light barrier and the right light barrier to be turned on, wherein the horizontal distance between the light-emitting point of the leftmost LED and the left light barrier is A1, the horizontal distance between the light-emitting point of the leftmost LED and the right light barrier is A2, the vertical distance between the light-emitting point of the leftmost LED and the end face, away from the lamp panel, of the left light barrier is B, the vertical line passing through the light-emitting point of the leftmost LED is a normal line, relative to the normal line, the left visual angle is theta 1, the right visual angle is theta 2, A1= tan theta 1 & ltB & gt, and A2= tan theta 2 & ltB >

6. The method as claimed in claim 5, wherein the control system controls the leftmost and rightmost LEDs between the left and right light barriers to be simultaneously lighted, and the control system controls the leftmost and rightmost LEDs between the left and right light barriers to be different in brightness.

7. The method for adjusting the viewing angle of an LED display screen of claim 5, wherein the number of LEDs between two adjacent light barriers is greater than or equal to 3;

the control system controls the middle LED to be turned off;

or the control system controls the middle LED to be lightened;

8. The method according to claim 1, wherein in the LED display screen, the first axis direction is a horizontal direction, the second axis direction is a vertical direction, the number of LEDs between two adjacent light barriers along the second axis direction is greater than or equal to 2, and the two adjacent light barriers are an upper light barrier and a lower light barrier respectively;

9. The method of claim 8, wherein the control system controls the top and bottom LEDs between the top and bottom light barriers to be turned on simultaneously, and the control system controls the top and bottom LEDs between the top and bottom light barriers to have different brightness.

10. The method for adjusting the viewing angle of an LED display screen of claim 8, wherein the number of LEDs between two adjacent light barriers is greater than or equal to 3;

the control system controls the middle LED to be turned off;

or the control system controls the middle LED to be lightened;