WO2020062764A1

WO2020062764A1 - Sound-permeable led display array, led display module and led image system

Info

Publication number: WO2020062764A1
Application number: PCT/CN2019/075700
Authority: WO
Inventors: 何西明; 李选中; 吴振志; 吴涵渠
Original assignee: 深圳市奥拓电子股份有限公司
Priority date: 2018-09-25
Filing date: 2019-02-21
Publication date: 2020-04-02
Also published as: CN209328413U

Abstract

A sound-permeable LED display array (10), an LED display unit (100) and an LED image system (200), wherein the sound-permeable LED display array (10) comprises a PCB (11) and multiple LED beads (12); the LED beads (12) are arranged in an array and are disposed on a light-emitting surface of the PCB (11); the PCB (11) on at least one side is provided with a sound-permeable groove (13) on an edge on which the LED beads (12) are not provided. Sound-permeable holes need not be uniformly provided on the whole array, thereby not influencing the arrangement of present LED arrays; the sound-permeable groove (13) is only arranged on the edge of the PCB (11) on which the LED beads (12) are not provided, thereby not influencing lines in the middle zone of the PCB (11) and only slightly influencing wiring in an edge zone, which may reduce the influence on the wiring on the PCB (11) while requirements for sound permeability are met; meanwhile, major modification to the PCB (11) is avoided.

Description

Sound-transmissive LED display array, LED display module and LED imaging system

Technical field

The utility model relates to the field of LED display, in particular to a sound-transmissive LED display array, an LED display unit and an LED image system.

Background technique

In recent years, with the continuous development of LED display technology, LED displays have been widely used in a variety of indoor and outdoor scenarios such as large outdoor screen displays, command centers, conference rooms, multimedia classrooms, and so on. At the same time, the industry is constantly exploring new application scenarios, one of which is the use on movie screens. But unlike other scenes, movie screens need to ensure a good sound experience, that is, the display screen must meet a certain sound transmission rate. In order to meet the requirements of sound transmission rate of existing movie screens, the screens are generally covered with sound transmission holes of uniform size and regular arrangement. The LED display adopts the arrangement of LED lamp bead arrays. If the entire LED array is drilled uniformly, it will seriously affect the PCB design of the LED display, especially the wiring design. Therefore, there is an urgent need for a new LED display structure that can meet the sound transmission requirements of movie screens.

technical problem

Based on this, it is necessary to propose a sound-transmissive LED display array, an LED display module, and an LED imaging system in order to solve the problem of poor sound-transmitting effect when the existing LED display screen is applied on a movie screen.

Technical solutions

An embodiment of the present invention provides a sound-permeable LED display array, including:

PCB circuit board and multiple LED lamp beads;

The LED lamp bead array is arranged on the light emitting surface of the PCB circuit board;

At least one side of the PCB circuit board is not provided with an edge of an LED lamp bead, and a sound transmitting groove is provided.

Preferably, the sound transmission groove is in an elongated shape or an arc shape.

Preferably, the sound transmission groove is further provided with an ear support groove, and the ear support groove extends from the sound transmission groove to a region between the LED lamp beads.

Preferably, the lug grooves are rectangular, trapezoidal, arc-shaped or zigzag-shaped.

Preferably, the sound transmission groove is composed of two sub sound transmission grooves, and the sub sound transmission grooves extend from both ends of the edge to the middle.

An embodiment of the present invention provides an LED display unit including a support frame and a plurality of LED display arrays, wherein the LED display array is mounted on the support frame,

The at least one LED display array is the aforementioned sound-permeable LED display array.

An embodiment of the present invention provides an LED image system, including a plurality of the sound-permeable LED display arrays described above, and at least one sound effect unit;

A plurality of the sound-transmissive LED display arrays are spliced into a display screen, and the sound effect unit is disposed on the back of the display screen.

Preferably, a sound-permeable slot is provided on each of the side edges of the PCB circuit board 4 of the sound-permeable LED display array;

or,

A sound-transmitting groove is provided on a PCB circuit board of the sound-permeable LED display array near several side edges of the sound effect unit.

An embodiment of the present invention further provides another LED image system, including a plurality of the aforementioned LED display units and at least one sound effect unit;

A plurality of the LED display units are spliced into a display screen, and the sound effect unit is disposed on the back of the display screen.

Preferably, the PCB circuit board of the LED display array of the LED display unit is provided with sound transmission grooves near several side edges of the sound effect unit.

Beneficial effect

Compared with the existing idea of uniformly arranging sound-transmitting holes in the existing movie screen, the sound-transmissive LED display array provided by the utility model does not need to uniformly arrange sound-transmitting holes in the entire array and will not affect the arrangement of the existing LED array ; Only the sound transmission groove is provided on the edge of the PCB circuit board where no LED lamp beads are provided, which will not affect the wiring in the middle area of the PCB circuit board, but only have a small effect on the wiring in the edge area. If required, reduce the impact on the wiring on the PCB circuit board and avoid making major changes to the PCB circuit board.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic structural diagram of a sound-permeable LED display array according to an embodiment of the present invention;

2 is a schematic structural diagram of a sound-permeable LED display array according to another embodiment of the present invention;

3 is a schematic structural diagram of a sound-permeable LED display array according to another embodiment of the present invention;

4 is a schematic structural diagram of a sound-permeable LED display array according to still another embodiment of the present invention;

5 is a schematic view of a shape of a lug groove of a sound transmitting groove in an embodiment of the present invention;

6 is a schematic structural diagram of a sound-permeable LED display array with ear grooves according to an embodiment of the present invention;

7 is a schematic structural diagram of an LED display unit according to an embodiment of the present invention;

8 is a schematic structural diagram of an LED imaging system according to an embodiment of the present invention;

9 is a schematic structural diagram of an LED imaging system according to another embodiment of the present invention;

10 is a schematic structural diagram of an LED imaging system according to another embodiment of the present invention;

FIG. 11 is a schematic structural diagram of an LED imaging system according to another embodiment of the present invention.

Embodiments of the invention

In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the related drawings. The drawings show the preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not meant to be the only implementations.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the present invention herein is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

FIG. 1 is a schematic structural diagram of a sound-permeable LED display array according to an embodiment of the present invention. An acoustically transparent LED display array 10 according to an embodiment of the present invention includes: a PCB circuit board 11 and a plurality of LED lamp beads 12;

The LED lamp beads 12 are arranged in an array, and are arranged on the light emitting surface of the PCB circuit board 11;

At least one side of the PCB circuit board 11 is not provided with an edge of an LED lamp bead, and a sound transmitting groove 13 is provided.

The PCB circuit board 11 can drive the LED lamp beads 12 disposed thereon to emit light. When the LED lamp beads 12 include LED lights of different colors such as red, green, and blue, a full color display can be realized. In order to realize the driving function of the PCB circuit board, the light emitting surface of the PCB circuit board 11 is provided with LED lamp beads 12, and the back side of the light emitting surface may be provided with a driving chip. In combination with the wiring on the PCB circuit board 11, an LED driving circuit can be formed to provide driving ability.

The LED lamp beads 12 are arrayed on the light-emitting surface of the PCB circuit board 11. The LED circuit beads 11 are not all provided with the LED lamp beads 12, and there are edges where the LED lamp beads are not provided. On the edge of at least one side, a long and narrow sound transmission groove 13 is provided to meet the sound transmission requirements of the LED display array.

Compared with the existing idea of uniformly arranging sound-transmitting holes in the existing movie screen, the sound-transmissive LED display array of this embodiment does not need to uniformly arrange sound-transmitting holes in the entire array, and will not affect the arrangement of the existing LED array; The sound transmission groove is only provided on the edge of the PCB circuit board where the LED lamp beads are not provided, which will not affect the wiring in the middle area of the PCB circuit board, but only have a small effect on the wiring in the edge area, which can meet the requirements of sound transmission. In this way, the influence on the wiring on the PCB circuit board is reduced, and large changes to the PCB circuit board are avoided.

Zh

According to the actual sound transmission requirements, referring to FIGS. 1 and 2, the edge of the PCB circuit board 11 on which the LED lamp beads are not provided may be provided with a sound transmission groove 13 only on one side. If a better sound transmission effect is required, sound transmission grooves 13 can also be provided on the edges of multiple sides, for example, sound transmission grooves can be provided on the edges of adjacent or opposite sides, and sound transmission grooves can be provided on the 3 or 4 sides. Of course, setting sound transmission grooves on the edges of multiple sides can also be determined based on the comprehensive measurement between the influence of the width of the sound transmission grooves on the stability of the PCB circuit board and the sound transmission requirements.

Considering the influence of the width of the sound transmission groove on the stability of the PCB circuit board, refer to FIG. 3, in order to avoid that the sound transmission groove is too wide to affect the stability of the PCB circuit board, the sound transmission groove 13 provided on the edge of one side can be changed The sliver sound transmission slot 131 is composed. The width of the sub sound transmission groove 131 is smaller than that of the single sound transmission groove 13. The two sub sound transmission grooves 131 may extend from both ends of the edge to the middle, but they are not on the same straight line. The two sub sound transmission grooves 131 may be relatively disposed near the middle position of the edge without overlapping; or may continue to extend beyond the middle position of the edge to form an overlap.

As shown in FIGS. 1 and 4, the sound transmission groove 13 may be in an elongated shape or in an arc shape.

Please refer to FIGS. 5 and 6. In order to improve the sound transmission effect, the sound transmission groove 13 is further provided with an ear support groove 132, which extends from the sound transmission groove 13 to the area between the LED lamp beads 12. By providing the ear support groove 132, the area of the sound transmission groove is increased, and the sound transmission rate is improved.

The ear support groove 132 may be rectangular, trapezoidal, curved, zigzag, or other shapes. Preferably, the ear support groove 132 is trapezoidal or arc-shaped. By setting trapezoidal or arc-shaped ear grooves 132, it is possible to increase the overall area of the sound transmission groove while increasing the distance between the sound transmission groove and the LED lamp beads as much as possible to reduce the effect of the sound transmission groove on the LED lamp beads and PCB circuits. Influence of wiring and stability.

The sound-transmissive LED display array of this embodiment does not need to uniformly arrange sound-transmitting holes on the entire array, and will not affect the arrangement of the existing LED array; only the sound-transmitting is provided on the edge of the PCB circuit board where no LED lamp beads are provided. The grooves will not affect the wiring in the middle area of the PCB circuit board, but only have a small impact on the wiring in the edge area. It can reduce the impact on the wiring on the PCB circuit board and meet the requirements of sound transmission, and avoid the PCB. The circuit board has undergone significant changes.

Zh

As shown in FIG. 7, an embodiment of the present invention provides an LED display unit 100 including a support frame 101 and a plurality of LED display arrays 10, and the LED display array 10 is mounted on the support frame 101;

The LED display array 10 includes: a PCB circuit board and a plurality of LED lamp beads; the LED lamp bead array is arranged on a light-emitting surface of the PCB circuit board;

The PCB circuit board of at least one side of the at least one LED display array 10 is not provided with an edge of an LED lamp bead, and is provided with a sound transmission groove 13.

That is, the LED display unit 100 includes at least one sound-transmissive LED display array as described in the previous embodiment.

By setting a sound transmission groove on the edge of the PCB circuit board of the LED display array of the LED display unit, there is no need to uniformly arrange sound transmission holes on the entire PCB circuit board, and it will not affect the arrangement of the existing LED array; The sound transmission groove is arranged on the edge of the LED lamp beads, which will not affect the wiring in the middle area of the PCB circuit board, but only have a small impact on the wiring in the edge area, which can reduce the impact on the wiring on the PCB circuit board and avoid The PCB circuit board has undergone significant changes.

The LED display unit may include two LED display arrays, and may also include four LED display arrays. The specific quantity is determined according to actual needs. By combining a number of LED display arrays into an LED display unit, the splicing operation of the LED display array is reduced. In actual use, the installation is directly performed according to the LED display unit module, which effectively improves the installation efficiency.

It can be understood that, in the LED display unit 100, not all LED display arrays need to be provided with sound transmission slots, but according to actual needs, at least one LED display array may be the LED display array described in the previous embodiment. Specifically, a sound transmission groove is provided on one or more sides of some LED display arrays, and no sound transmission groove is provided on other LED display arrays. Of course, if necessary, all the LED display arrays in the LED display unit 100 may be the LED display arrays described in the previous embodiment.

The sound transmission groove 13 may be rectangular or arc-shaped. According to the actual sound transmission requirements, the edge of the PCB circuit board 11 on which the LED lamp beads are not provided may be provided with a sound transmission groove 13 only on one side; the sound transmission groove 13 may also be provided on the edges of multiple sides, for example, adjacent Or, sound-permeable grooves are provided on the edges of the opposite sides, and sound-permeable grooves are provided on the 3 or 4 edges. Referring to FIG. 3, considering the influence of the width of the sound transmission groove on the stability of the PCB circuit board, the sound transmission groove 13 may be composed of two sub sound transmission grooves 131. The width of the sub sound transmission groove 131 is smaller than that of the single sound transmission groove 13.

Please refer to FIGS. 5 and 6. In order to improve the sound transmission effect, the sound transmission groove 13 is further provided with an ear support groove 132, which extends from the sound transmission groove 13 to the area between the LED lamp beads 12. The ear support groove 132 may be rectangular, trapezoidal, curved, zigzag, or other shapes. Preferably, the ear support groove 132 is trapezoidal or arc-shaped. By setting trapezoidal or arc-shaped ear grooves 132, it is possible to increase the overall area of the sound transmission groove while increasing the distance between the sound transmission groove and the LED lamp beads as much as possible to reduce the effect of the sound transmission groove on the LED lamp beads and PCB circuits. Influence of wiring and stability.

In the LED display unit of this embodiment, a sound transmission slot is provided on the edge of the PCB circuit board of the LED display array of the LED display unit, and it is not necessary to uniformly arrange sound transmission holes on the entire PCB circuit board, which will not affect the arrangement of the existing LED array. Cloth; the sound transmission groove is only provided on the edge of the PCB circuit board where no LED lamp beads are provided, which will not affect the wiring in the middle area of the PCB circuit board, but only have a small effect on the wiring in the edge area, which can reduce the PCB circuit The effect of wiring on the board avoids major changes to the PCB circuit board.

Zh

An embodiment of the present invention also provides an LED image system 200. As shown in FIG. 8, it includes a plurality of LED display arrays 10 and at least one sound effect unit 20. The plurality of LED display arrays 10 are spliced into a display screen. The sound effect unit 20 is disposed on the back of the display screen. The LED display array 10 is the LED display array described in the previous embodiment.

By setting a sound transmission slot on the edge of the PCB circuit board of the LED display array, the sound from the sound effect unit on the back of the display screen can be transmitted through the display screen to the audience in front of the display screen to achieve a good audiovisual effect.

The sound effect unit 20 may be a specific device such as a speaker or a speaker. As shown in FIG. 8, the sound effect unit 20 may correspond to the LED display array 10 one by one, and a sound effect unit 20 is provided on the back of each LED display array 10. In this way, a sound transmitting slot 13 is provided on the side edge of the PCB circuit board 4 of each LED display array 10.

As shown in FIG. 9, the sound effect unit 20 may also be disposed in a region between two adjacent LED display arrays 10. In this way, a sound transmission slot 13 is provided on the edge of the PCB circuit board of each LED display array 10 in contact with the sound effect unit 20. Specifically, a sound transmission groove may be provided on the three sides of the sound effect unit 20 in contact with each other.

As shown in FIG. 10, one sound effect unit 20 corresponds to four LED display arrays 10, and the sound effect unit 20 is disposed at the center position of four adjacent LED display arrays 10. At this time, a sound transmission groove 13 may be provided on the side edge of the PCB circuit board 4 of each LED display array 10. In order to reduce the influence of the sound transmission groove on the stability of the PCB circuit board, it is preferable that the sound transmission unit 13 is provided on the edge of the PCB circuit board of each LED display array 10 in contact with the sound effect unit 20. For example, a sound transmission slot may be provided on each edge of each LED display array 10 near two central positions of four adjacent LED display arrays 10.

It can be understood that the sound effect units 20 do not need to be evenly distributed on the back of the display screen, but are set in a partial area on the back of the display screen according to the sound effect requirements.

In the LED image system of this embodiment, a sound transmission groove is provided on the edge of the PCB circuit board of the LED display array, so that the sound from the sound effect unit on the back of the display screen can be transmitted through the display screen to the audience in front of the display screen, achieving good Audiovisual effect.

Zh

Another embodiment of the present invention also provides an LED image system 200. As shown in FIG. 11, it includes a plurality of LED display units 100 and at least one sound effect unit 20. The plurality of LED display units are spliced into a display screen. The sound effect unit 20 is disposed on the back of the display screen. The LED display unit 100 is the LED display unit described in the previous embodiment.

A sound transmission slot is provided on the edge of the PCB circuit board of the LED display array of the LED display unit, so that the sound from the sound effect unit on the back of the display screen can be transmitted through the display screen to the audience in front of the display screen to achieve a good audiovisual effect.

The sound effect unit 20 may be a specific device such as a speaker or a speaker. As shown in FIG. 11, the sound effect unit 20 may correspond to the LED display unit 100 one by one, and a sound effect unit 20 is provided on the back of each LED display unit 100. At this time, a sound transmission groove 13 may be provided on the side edge of the PCB circuit board 4 of each LED display array 10 of each LED display unit 100.

In order to reduce the influence of the sound transmission groove on the stability of the PCB circuit board, it is preferable that the sound transmission unit 13 is provided on the edge of the PCB circuit board of each LED display array 10 in contact with the sound effect unit 20. For example, when the LED display unit 100 is composed of four LED display arrays 10, a sound transmission slot may be provided on each of the two edges of each LED display array 10 near the center position of the LED display unit 100. When the LED display unit 100 is composed of two LED display arrays 10, a sound transmission slot may be provided on each of the three sides of each LED display array 10 near the sound effect unit 20.

In the LED image system of this embodiment, a sound transmission groove is provided on the edge of the PCB circuit board of the LED display array of the LED display unit, so that the sound from the sound effect unit on the back of the display screen can be transmitted through the display screen to the front of the display screen. Audience, to achieve good audiovisual results.

Zh

The technical features of the embodiments described above can be arbitrarily combined. In order to simplify the description, all possible combinations of the technical features in the above embodiments have not been described. However, as long as there is no contradiction in the combination of these technical features, It should be considered as the scope described in this specification.

The above-mentioned embodiments only express several implementation manners of the present utility model, and the description thereof is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

A sound-permeable LED display array, characterized in that:

PCB circuit board and multiple LED lamp beads;

The LED lamp bead array is arranged on the light emitting surface of the PCB circuit board;

At least one side of the PCB circuit board is not provided with an edge of an LED lamp bead, and a sound transmitting groove is provided.
The sound-transmissive LED display array according to claim 1, wherein:

The sound transmission groove is in an elongated shape or an arc shape.
The sound-transmissive LED display array according to claim 2, wherein:

The sound transmission groove is further provided with an ear support groove, and the ear support groove extends from the sound transmission groove to a region between the LED lamp beads.
The sound-transmissive LED display array according to claim 3, wherein:

The lug groove is rectangular, trapezoidal, arc-shaped, or zigzag-shaped.
The sound-transmissive LED display array according to claim 1, wherein:

The sound transmission groove is composed of two sub sound transmission grooves, and the sub sound transmission grooves extend from two ends of the edge to the middle.
An LED display unit includes a support frame and a plurality of LED display arrays. The LED display array is mounted on the support frame, and is characterized in that:

The at least one LED display array is the sound-permeable LED display array according to any one of claims 1-5.
An LED video system, comprising a plurality of sound-transmissive LED display arrays according to any one of claims 1-5, and at least one sound effect unit;

A plurality of the sound-transmissive LED display arrays are spliced into a display screen, and the sound effect unit is disposed on the back of the display screen.
The LED image system according to claim 7, wherein:

Sound-permeable slots are provided on the side edges of the PCB circuit board 4 of the sound-permeable LED display array;

or,

A sound-transmitting groove is provided on a PCB circuit board of the sound-permeable LED display array near several side edges of the sound effect unit.
An LED video system, comprising a plurality of LED display units according to claim 6 and at least one sound effect unit;

A plurality of the LED display units are spliced into a display screen, and the sound effect unit is disposed on the back of the display screen.
The LED image system according to claim 9, wherein:

The PCB circuit board of the LED display array of the LED display unit is provided with sound transmission grooves near several side edges of the sound effect unit.