CN109118969B

CN109118969B - LED display module and LED display screen

Info

Publication number: CN109118969B
Application number: CN201811114300.7A
Authority: CN
Inventors: 李选中; 吴振志; 吴涵渠
Original assignee: Shenzhen Aoto Electronics Co Ltd
Current assignee: Shenzhen Aoto Electronics Co Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2024-04-02
Anticipated expiration: 2038-09-25
Also published as: WO2020062763A1; CN109118969A

Abstract

The invention relates to an LED display module and an LED display screen, wherein the LED display module comprises a display module and a box bracket, and the display module is fixedly connected to the box bracket. The LED display screen is formed by splicing LED display modules. Through setting up a plurality of breach on the lamp plate, when splice the LED display module assembly and form the LED display screen, the breach of the lamp plate of two LED display module assemblies sets up relatively to surround and form a sound transmission hole, can lead the sound at LED display module assembly back to openly through the sound transmission hole, thereby realized the sound transmission of display screen, the audio problem of cinema of solution.

Description

LED display module and LED display screen

Technical Field

The invention relates to LED display equipment, in particular to an LED display module and an LED display screen.

Background

The LED display screen can easily realize high resolution, and is applied to cinema, and is expected to become a development trend of future cinema. The oversized LED display screen is usually formed by assembling a plurality of boxes, the boxes are tightly spliced, and when the sound is placed on the back of the display screen, the sound cannot penetrate, so that the sound effect of the cinema is affected.

Disclosure of Invention

Therefore, when the LED display screen is applied to a cinema, the sound cannot penetrate the display screen, so that the cinema sound effect is affected.

The utility model provides a LED display module assembly, includes display module assembly and box support, display module assembly fixed connection in box support, display module assembly includes lamp plate and LED lamp pearl, the LED lamp pearl set up in on the lamp plate, the edge of lamp plate is provided with a plurality of breach, and when two LED display module assemblies splice, the lamp plate of two LED display module assemblies the breach sets up relatively to surround and form a sound-transmitting hole.

In one embodiment, the display module further includes a bottom shell, the lamp panel is fixed on the bottom shell, the bottom shell is fixed on the box body support, a first sound-transmitting groove is formed in the bottom shell corresponding to the notch, the first sound-transmitting groove is communicated with the notch, and the first sound-transmitting groove is communicated with the notch to form a sound-transmitting channel.

In one embodiment, the lamp panel includes a plurality of sub-lamp panels, a plurality of sub-lamp panels are fixed on the bottom shell and closely abut against each other, and at least one side of the sub-lamp panels is provided with a notch.

In one embodiment, the lamp panel is provided with a through hole, the through hole penetrates through the lamp panel in the thickness direction, and the through hole is communicated with the outside from two opposite sides of the display module.

In one embodiment, the LED lamp beads are arranged in an array on one of the end faces of the lamp panel, a space is provided between the LED lamp beads, and the through holes are arranged corresponding to the gaps between the LED lamp beads.

In one embodiment, the LED lamp bead is a composite lamp bead, the composite lamp bead includes a plurality of LED chips and a lamp body, a plurality of LED chips are arranged on the lamp body in an array manner, through holes are formed in the lamp body, and penetrate through the lamp body in the thickness direction and are communicated with the through holes.

In one embodiment, the composite lamp bead further includes a packaging adhesive layer, the packaging adhesive layer encapsulates the LED chip on the lamp panel, a region of the packaging adhesive layer, which is close to the through hole, is at least partially cleared, and the cross-sectional area of the cleared region is greater than or equal to the cross-sectional area of the through hole, so that a horn-shaped structure is formed with the through Kong Goujian.

In one embodiment, the perforations are also arranged between the composite lamp beads, and the perforations are arranged corresponding to gaps between the composite lamp beads.

In one embodiment, a second sound-transmitting groove is correspondingly arranged on the box body bracket, and the first sound-transmitting groove is communicated with the second sound-transmitting groove; or alternatively

The edge of the box body bracket and the edge of the lamp panel have a preset redundant distance.

Above-mentioned LED display module assembly, through setting up a plurality of breach on the lamp plate, when splice the LED display module assembly forms the LED display screen, the breach of the lamp plate of two LED display module assemblies sets up relatively to surround and form a sound transmission hole, can lead the sound at the LED display module assembly back to openly through the sound transmission hole, thereby realized the sound transmission of display screen, the audio problem of cinema of solution.

The LED display screen comprises a plurality of LED display modules and a splicing structure, wherein the LED display modules are fixedly spliced through the splicing structure, and the LED display modules are any one of the LED display modules.

Above-mentioned LED display screen, through set up a plurality of breach on LED display module assembly's lamp plate, the breach of two LED display module assembly's lamp plate sets up relatively to surround and form a sound-transmitting hole, can lead the sound at LED display module assembly back to openly through the sound-transmitting hole, thereby realized the sound-transmitting of display screen, the audio problem of cinema of solution.

Drawings

FIG. 1 is a side view of an LED display module according to an embodiment of the invention;

FIG. 2 is a top view of an LED display module according to an embodiment of the invention;

FIG. 3 is a top view of an LED display module according to another embodiment of the present invention;

FIG. 4 is a top view of an LED display module according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of an LED lamp bead of an LED display module according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an LED lamp bead of an LED display module according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of an LED lamp bead of an LED display module according to another embodiment of the present invention;

fig. 8 is a side view of an LED display module according to another embodiment of the present invention.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "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 the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

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 herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a schematic structural diagram of an LED display module 100 according to an embodiment of the present invention is shown in an exemplary manner, a plurality of LED display modules 100 may be spliced with one another to form an oversized LED display screen, and the LED display module 100 may be applied in a cinema to enable sound on the back of the LED display screen to penetrate through the LED display screen from between the LED display modules 100, so as to realize sound transmission of the LED display screen.

As shown in fig. 1, the LED display module 100 may include a display module 10 and a case stand 20, where the display module 10 is fixedly connected to the case stand 20.

With continued reference to fig. 2, the display module 10 may include a light plate 110 and an LED light bead 120, where the LED light bead 120 is disposed on the light plate 110, and a plurality of notches 110a are disposed at an edge of the light plate 110, and when two LED display modules 100 are spliced, the notches 110a of the light plates 110 of the two display modules are disposed opposite to each other and surround to form a sound transmission hole, and sound can pass through the sound transmission hole, thereby realizing sound transmission.

Referring to fig. 1, the display module 10 may further include a bottom case 130, the lamp panel 110 is fixed on the bottom case 130, and the bottom case 130 is fixed on the case stand 20, thereby fixing the display module 10 on the case stand 20. The bottom case 130 may be provided with a first sound-transmitting groove 131 corresponding to the notch 110a, where the first sound-transmitting groove 131 is connected to the notch 110a, so that sound can pass through a sound-transmitting channel formed by the connection between the first sound-transmitting groove 131 on the bottom case 130 and the notch 110a on the lamp panel 110, and thus the sound on the back of the display module 10 is transmitted to the front. By arranging the bottom shell 130, the lamp panel 110 can be completely accommodated and fixed in the bottom shell 130, so that the problem that the lamp panel 110 is damaged and further displayed due to the fact that the lamp panel 110 extends out of the bottom shell 130 is avoided, in addition, when in splicing, the flatness of the bottom shell 130 is adjusted, compared with the flatness of the lamp panel 110, the flatness is relatively simple, and the splicing of the LED display module 100 is facilitated; the first sound-transmitting groove 131 is further formed on the bottom shell 130, so that the bottom shell 130 is prevented from blocking the notch 110a, and sound can be transmitted through the notch 110a.

Referring to fig. 2, the light panel 110 may be a complete light panel or may be formed by splicing a plurality of sub-light panels 112. In one or more embodiments, the light panel 110 may include a plurality of sub-light panels 112, where the sub-light panels 112 are fixed on the bottom shell 130 and closely abutted, and at least one side of the sub-light panels 112 is provided with a notch 110a. For example, each display module 10 may include 4 sub-light panels 112,4, where the sub-light panels 112 are arranged in an array of 2×2, and the sub-light panels 112 are combined to form a complete light panel 110, two sides of each sub-light panel 112 may be provided with notches 110a, and when the sub-light panels 112 are fixed, the sides provided with the notches 110a are used as edge portions, so that the edges of the combined light panel 110 may have the notches 110a. In a specific embodiment, to facilitate the combination and splicing of the sub-light panels 112, the sub-light panels 112 may be square.

Referring to fig. 3 and 4, the light panel 110 may further be provided with a through hole 110b, the through hole 110b penetrates the light panel 110 in the thickness direction, and the through hole 110b may communicate with the outside from opposite sides of the display module 10 for sound transmission.

Referring to fig. 3, in one embodiment, the LED beads 120 are arranged in an array on one of the end faces of the lamp panel 110, the LED beads 120 have a space therebetween, and the through holes 110b may be disposed corresponding to the gaps between the LED beads 120. For example, a through hole 110b is disposed between every four LED lamp beads 120. For example, when the LED beads are arranged in an array of 2*3, two perforations 110b may be provided. The shape of the through holes 110b may be circular, but may be rectangular or cross-shaped to fit the gaps between the rows and columns of the LED beads 120 for a larger sound-transmitting area. Sound transmission is also facilitated by the perforations 110b in the light panel 110.

Referring to fig. 4 and 5, in another embodiment, the LED lamp beads 120 are composite lamp beads, each composite lamp bead includes a plurality of LED chips 121, the plurality of LED chips 121 are arranged in an array, and through holes 120a may be disposed on the composite lamp beads, and the through holes 120a penetrate through the composite lamp beads in the thickness direction and are communicated with the through holes 110b on the lamp panel 110.

Specifically, the composite lamp bead may further include a lamp body 122, and the plurality of LED chips 121 are disposed on the lamp body 122 at intervals and are arranged in an array.

The lamp body 122 may have a first end surface 122a and a second end surface 122b disposed opposite to each other, where the first end surface 122a is an end surface far from the lamp panel 110 and the second end surface 122b is an end surface near the lamp panel 110 when the composite lamp bead is mounted on the lamp panel 110. The LED chips 121 may be disposed on the first end surface 122a and arranged in an array on the first end surface 122 a. For example, when the LED chips 121 are provided with four, the LED chips 121 may be arranged in a 2×2 array on the first end face 122 a; when the LED chips 121 are provided in 6, they may be arranged in a 2*3 array or 3*2 array. It will be appreciated that the LED chips 121 may be arranged in other arrays, and are not limited to the arrangements exemplified in the foregoing embodiments.

The through hole 120a may be provided in the lamp body 122, and penetrates the first end surface 122a and the second end surface 122b of the lamp body 122 in the thickness direction. For example, when the LED chips 121 are arranged in a 2×2 array at the first end face 122a, the through holes 120a may be disposed at intermediate positions of the four LED chips 121. By providing the through hole 120a, the sound on the back side of the display module 10 can be transmitted through the through hole 120a of the lamp body 122 and led out to the front side of the display module 10.

One or more through holes 120a may be provided, and specifically, the number of the through holes may be adapted to the number of the LED chips 121, for example, one through hole 120a may be provided at each center position of four LED chips 121. For example, the LED chips 121 are arranged in the form of 2*3 array, and the number of the through holes 120a may be set to two.

Referring to fig. 6, the composite lamp bead may further include light shielding rails 123, where the light shielding rails 123 may be disposed on the first end surface 122a of the lamp body 122, and each light shielding rail 123 corresponds to one LED chip 121 and is disposed around the LED chip 121. By providing the light shielding rail 123, a light-crosstalk phenomenon between adjacent LED chips 121 can be avoided.

A groove 124 may be disposed between the light shielding rails 123, and the through hole 120a may be disposed corresponding to the groove 124. In some embodiments, the cross-sectional area of the end of the through hole 120a proximate to the first end surface 122a is greater than the cross-sectional area of the end proximate to the second end surface 122b. For example, the end of the through hole 120a near the second end face 122b may be circular, and the end near the first end face 122a may be provided with an irregular shape, for example, may be elongated or cross-shaped in accordance with the shape of the groove 124. For example, when the through hole 120a is disposed between the four LED chips 121, one end of the through hole 120a near the first end surface 122a may be disposed in a cross shape and connected smoothly with one end of the through hole 120a near the second end surface 122b by a curved surface, so that the shape of the through hole 120a is approximately horn-shaped, and a certain amplification effect can be exerted on the sound. Of course, an end of the through hole 120a near the second end surface 122b may be disposed in a cross shape or a straight shape. It will be appreciated by those skilled in the art that the through holes 120a may be provided in a straight or cross shape when the light shielding rail 123 is not provided.

Referring to fig. 7, in order to protect the LED chip 121 and obtain better light effect, the composite lamp bead may further include an encapsulation adhesive layer 125, where the encapsulation adhesive layer 125 is disposed on the first end surface 122a of the lamp panel 110, and encapsulates the LED chip 121 on the first end surface 122a of the lamp panel 110, so as to adjust the light emitting effect of the LED chip 121.

When the LED chip 121 is encapsulated with the encapsulation adhesive layer 125, the encapsulation adhesive layer 125 phase-changes to increase the thickness of the composite lamp bead, so that the through hole 120a can be configured into a horn shape by using the encapsulation adhesive layer 125. For example, the through hole 120a on the lamp body 122 may be a circular hole or a cross-shaped hole, the area of the encapsulation adhesive layer 125 near the through hole 120a is at least partially removed, and the cross-sectional area of the removed area is greater than or equal to the cross-sectional area of the through hole 120a, and the removed area and the through hole 120a are constructed to form a horn-shaped structure 1251. The removal of the encapsulation adhesive layer 125 may be performed by etching, dicing, laser, etc., but other methods are also possible. By removing part of the encapsulation adhesive layer 125, the cross-sectional area of the part of the encapsulation adhesive layer 125, which is close to one end of the through hole 120a, is greater than or equal to the cross-sectional area of one side of the through hole 120a, which is close to the encapsulation adhesive layer 125, so that the sound coming out of the through hole 120a can be amplified, and the sound effect can be further improved. It will be appreciated that the cross-sectional area of the portion of the encapsulation layer 125 removed away from the through hole 120a may be greater than the cross-sectional area of the portion of the encapsulation layer 125 removed near the through hole 120a, and the portion of the encapsulation layer 125 near the through hole 120a may be in transition with smooth curved surfaces, so that the portion of the encapsulation layer 125 near the through hole 120a may be adapted to the portion of the encapsulation layer 125 near the first end 122a, thereby forming a horn-shaped sound-transmitting hole with the encapsulation layer 125 and the through hole 120a.

It can be appreciated that the through holes 110b on the lamp panel 110 can be set as circular holes, the through holes 120a on the composite lamp beads can be set as cross holes, and then the horn-shaped structures 1251 formed by cleaning the encapsulation adhesive layer 125 are matched, so that when sound propagates, the sound sequentially passes through the circular through holes 110b and enters the larger cross-shaped through holes 120a, and then is transmitted from the horn-shaped structures 1251 of the encapsulation adhesive layer 125, the sound is amplified step by step, and the sound guiding effect is good.

It will be appreciated that perforations 110b may also be provided between the composite beads, and the perforations 110b may be provided corresponding to the gaps between the composite beads. Therefore, the partial through holes 110b are arranged corresponding to the through holes 120a of the composite lamp beads, the partial through holes 110b are arranged corresponding to the gaps between the composite lamp beads, the sound conduction is realized together, the through holes 120a of the composite lamp beads amplify the sound, the through holes 110b between the composite lamp beads do not amplify the sound, and under the condition that the ratio of the through holes 110b to the through holes 120a meets a specific condition, the noise caused by overlarge amplification of the sound can be avoided, and meanwhile, the sound is not too small.

By arranging the perforation 110b in the lamp panel 110 and arranging the through hole 120a on the composite lamp bead, sound guiding of the notch 110a of the lamp panel 110 can be well supplemented, and the sound effect of the cinema is improved.

Referring to fig. 1, a second sound-transmitting groove 210 may be correspondingly disposed on the case support 20, the first sound-transmitting groove 131 is communicated with the second sound-transmitting groove 210, and after the two LED display modules 100 are spliced, the second sound-transmitting groove 210 of the case support 20 surrounds to form a sound-transmitting channel for transmitting sound.

Referring to fig. 8, in a specific embodiment, the edge of the case support 20 has a predetermined redundancy distance from the edge of the lamp panel 110, so that the blocking effect of the case support 20 on the sound can be avoided. Further, the box bracket 20 can be provided with a hollowed-out structure, thereby further facilitating the conduction of sound.

Above-mentioned LED display module assembly 100, through set up a plurality of breach 110a on lamp plate 110, when splice LED display module assembly 100 forms the LED display screen, the breach 110a of the lamp plate 110 of two LED display module assemblies 100 sets up relatively to surround and form a sound transmission hole, can lead the sound at the back of LED display module assembly 100 to openly through the sound transmission hole, thereby realized the sound transmission of display screen, the audio problem of cinema of solution.

Further, perforations 110b may be provided in the light panel 110, so that the sound transmission effect can be further improved.

The embodiment of the invention also provides an LED display screen, which comprises a plurality of LED display modules and a splicing structure, wherein the LED display modules are spliced and fixed through the splicing structure, and the LED display module is the LED display module in any embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The LED display module comprises a display module and a box bracket, wherein the display module is fixedly connected to the box bracket, and is characterized in that the display module comprises a lamp panel and LED lamp beads, the LED lamp beads are arranged on the lamp panel, a plurality of notches are formed in the edge of the lamp panel, and when two LED display modules are spliced, the notches of the lamp panels of the two LED display modules are oppositely arranged and form an acoustic hole in a surrounding manner;

the display module further comprises a bottom shell, the lamp panel is fixed on the bottom shell, the bottom shell is fixed on the box body support, a first sound transmission groove is formed in the bottom shell corresponding to the notch, the first sound transmission groove is communicated with the notch, and the first sound transmission groove and the notch are communicated to form a sound transmission channel;

the lamp panel is provided with a perforation, the perforation penetrates through the lamp panel in the thickness direction, and the perforation is communicated with the outside from two opposite sides of the display module;

the LED lamp beads are composite lamp beads, the composite lamp beads comprise a plurality of LED chips and lamp bodies, the LED chips are arranged on the lamp bodies in an array manner, through holes are formed in the lamp bodies, penetrate through the lamp bodies in the thickness direction and are communicated with the through holes;

the composite lamp bead further comprises an encapsulation adhesive layer, the encapsulation adhesive layer encapsulates the LED chip on the lamp panel, at least part of the area, close to the through hole, of the encapsulation adhesive layer is removed, the cross section area of the removed area is larger than or equal to the cross section area of the through hole, and a horn-shaped structure is formed with the through Kong Goujian.

2. The LED display module of claim 1, wherein the lamp panel comprises a plurality of sub-lamp panels, the plurality of sub-lamp panels are fixed on the bottom shell and are tightly abutted, and at least one side of the sub-lamp panels is provided with a notch.

3. The LED display module of claim 1, wherein the perforations are also provided between the composite beads, the perforations being provided corresponding to gaps between the composite beads.

4. The LED display module according to claim 1, wherein a second sound-transmitting groove is correspondingly arranged on the box bracket, and the first sound-transmitting groove is communicated with the second sound-transmitting groove; or alternatively

5. An LED display screen, the LED display screen includes a plurality of LED display modules and mosaic structure, and a plurality of LED display modules pass through mosaic structure concatenation fixedly, its characterized in that, the LED display module is the LED display module of any one of claims 1-4.