CN211628606U - Display screen - Google Patents

Abstract

The utility model relates to a display screen, include: the mounting assembly comprises a panel and a bottom plate which both have light transmission properties, wherein the panel and the bottom plate are arranged at intervals, and an interval gap is formed between the panel and the bottom plate. And the light-emitting component is positioned in the gap, the light-emitting component comprises a circuit board and lamp beads, the circuit board is provided with a mounting surface facing the panel, and the number of the lamp beads is multiple and the lamp beads are arranged on the mounting surface at intervals. And the connecting assembly penetrates through the circuit board and is positioned in the spacing gap, and the connecting assembly has light transmittance and is used for fixedly connecting the circuit board with the panel and the bottom plate. Because bottom plate, panel and coupling assembling all have the light transmissivity, can guarantee the light transmissivity of whole display screen, can see through the scenery of display screen opposite side promptly from one side. When the display screen stops working, the display screen with light transmission cannot shield light.

Description

Display screen

Technical Field

The utility model relates to a show technical field, especially relate to a display screen.

Background

An LED (Light Emitting Diode) display screen is a display, and is composed of small LED module panels for displaying various information such as text, images, and videos. The LED display screen integrates electronic technology, computer technology and information processing technology and is formed by an LED dot matrix. And the display control is carried out by adopting a modular structure, so that the lamp beads are lightened or extinguished to replace screen display contents such as characters, animations, pictures or videos. The LED display screen has the advantages of bright color, wide dynamic range, high brightness, long service life, stable and reliable operation and the like. The LED display screen is widely applied to commercial media, cultural performance markets, stadiums, information dissemination, news distribution, security trading and the like, and can meet the requirements of different environments.

For traditional LED display screen, when setting up at installation environment such as glass curtain wall, shop window or stage background, the LED display screen will form the effect of covering to glass curtain wall for the user can't see through the LED display screen from indoor and observe outdoor scenery, thereby influences glass curtain wall's daylighting performance, in short, the user can't see through LED display screen itself in order to observe the scenery of its opposite side from one side of LED display screen. Therefore, the traditional LED display screen has the defect of no light transmission.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem how to improve the luminousness of display screen.

A display screen, comprising:

the mounting assembly comprises a panel and a bottom plate which both have light transmission properties, wherein the panel and the bottom plate are arranged at intervals, and a spacing gap is formed between the panel and the bottom plate;

the light-emitting assembly is positioned in the gap and comprises a circuit board and a plurality of lamp beads, the circuit board is provided with a mounting surface facing the panel, and the lamp beads are arranged on the mounting surface at intervals; and

and the connecting assembly penetrates through the circuit board and is positioned in the spacing gap, and the connecting assembly has light transmittance and is used for fixedly connecting the circuit board with the panel and the bottom plate.

In one embodiment, the circuit board comprises longitudinal beams and transverse beams, the mounting surfaces are located on the transverse beams and the longitudinal beams, the longitudinal beams are arranged at intervals along a first direction, the transverse beams are connected between two adjacent longitudinal beams and arranged at intervals along a second direction perpendicular to the first direction, and an accommodating gap is formed between the two transverse beams arranged at intervals.

In one embodiment, the display screen further comprises a fastening piece, the connecting assembly comprises a first fixing block, the first fixing block comprises a first connecting portion and a first positioning piece which are connected with each other, the first positioning piece is inserted into a gap between every two adjacent lamp beads, the first connecting portion is located in the accommodating gap and provided with a first through hole, mounting holes corresponding to the first through holes are formed in the bottom plate and the panel, and the fastening piece penetrates through the first through hole and the mounting holes.

In one embodiment, the first connecting part is positioned in the accommodating gap at the edge of the circuit board; the first fixing block further comprises a second positioning piece, the second positioning piece and the first positioning piece are arranged at intervals, and the cross beam is clamped in a gap between the first positioning piece and the second positioning piece.

In one embodiment, the display screen further comprises a fastener, the connecting assembly comprises a second fixing block, the second fixing block comprises a second connecting portion and a main body portion, second through holes are formed in the second connecting portion at intervals, two ends of the main body portion are connected between the second connecting portion, the second connecting portion is located in the accommodating gap, the longitudinal beam is located in the cavity surrounded by the main body portion and the second connecting portion, mounting holes corresponding to the second through holes are formed in the bottom plate and the panel, and the fastener is arranged in the second through holes in a penetrating mode.

In one embodiment, the second fixing block further comprises a clamping strip connected with the main body part, and the clamping strip is located in the cavity and connected with the longitudinal beam in a buckling mode.

In one embodiment, the spacing gap is formed with a through opening at the periphery of the mounting assembly, the through opening communicating with the outside.

In one embodiment, the mounting plate is fixed on the bottom plate and comprises a hanging part outside the outline of the bottom plate, and the hanging part is provided with a fixing hole for fixing the mounting plate.

In one embodiment, the heat dissipation device further comprises a cover plate and a control component, wherein the cover plate is connected with the bottom plate, the cover plate and the bottom plate jointly enclose an accommodating cavity, the control component is located in the accommodating cavity, and heat dissipation fins for dissipating heat are arranged on the surface of the cover plate.

In one embodiment, the mounting assembly comprises a polycarbonate assembly or a clear acrylic assembly; the connecting assembly comprises a polycarbonate assembly or a transparent acrylic assembly.

The utility model discloses a technical effect of an embodiment is: because bottom plate, panel and coupling assembling all have the light transmissivity, can guarantee the light transmissivity of whole display screen, can see through the scenery of display screen opposite side promptly from one side. When the display screen stops working, the display screen with light transmission cannot shield light. Meanwhile, the light-emitting component can fully utilize the existing space of the gap, so that the light-emitting component does not occupy the extra space in the thickness direction of the display screen, and the thinning of the display screen is ensured. And the clearance also eliminates the hindrance effect to light, further improves the light transmissivity of display screen, and the clearance also is favorable to the heat dissipation of whole display screen.

Drawings

Fig. 1 is a schematic perspective view of a display screen according to an embodiment;

FIG. 2 is an exploded view of the display screen of FIG. 1;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic perspective view of the light emitting device of FIG. 2;

fig. 5 is a schematic perspective view of the first fixing block in fig. 2;

fig. 6 is a schematic perspective view of a second fixing block in fig. 2;

FIG. 7 is a schematic perspective view of the display screen shown in FIG. 1 at another viewing angle;

fig. 8 is an enlarged schematic view of B in fig. 7.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The 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 "secured 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 "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1, fig. 2 and fig. 3, a display screen 10 according to an embodiment of the present invention is used for displaying various information such as text, images and videos, and the display screen 10 includes a mounting assembly 100, a light emitting assembly 200, a connecting assembly 300 and a fastening member. The mounting assembly 100 includes a panel 110 and a base plate 120, the light emitting assembly 200 is positioned between the base plate 120 and the panel 110, and a fastener can fixedly connect the mounting assembly 100 and the light emitting assembly 200 through the connecting assembly 300.

In some embodiments, the panel 110 is optically transparent, and in colloquial terms, a user can view a scene on one side of the panel 110 through the panel 110 itself, and light emitted from the display screen 10 is transmitted through the panel 110. The panel 110 may be made of a transparent material such as a polycarbonate material, transparent acrylic, transparent glass, etc., so as to ensure that the panel 110 has a good light transmittance, such that the light transmittance of the panel 110 may reach 90-91%. The panel 110 and the base plate 120 are spaced apart from each other such that a gap 130 is formed between the panel 110 and the base plate 120, i.e., the gap 130 may realize a frameless design of the entire display screen 10. The panel 110 is provided with a mounting hole 140, the mounting hole 140 is a through hole and extends along the thickness direction of the panel 110, and a fastener can be inserted into the mounting hole 140. The mounting hole 140 penetrates through both surfaces of the panel 110, which are oppositely disposed, such that the mounting hole 140 communicates the spacing gap 130 with the outside. Specifically, the two oppositely disposed surfaces of the panel 110 are the inner surface and the outer surface of the panel 110, i.e., the mounting hole 140 penetrates through the inner surface and the outer surface of the panel 110, and obviously, the inner surface and the outer surface are oriented just oppositely. The inner surface of the panel 110 defines part of the boundary of the spacing gap 130, and the outer surface of the panel 110 is in direct contact with the outside. The shape of the panel 110 is a rectangular flat plate, but it is needless to say that the shape of the panel 110 may be a circular, elliptical or a positive variable flat surface, or the shape of the panel 110 may be a curved surface, for example, a curved surface of an arc shape or a curved surface of a wave shape.

In some embodiments, the base 120 is also optically transparent, in a colloquial sense, a user can view a scene on one side of the base 120 through the base 120 itself. The bottom plate 120 can be made of transparent materials such as polycarbonate material, transparent acrylic, transparent glass and the like, so that the bottom plate 120 has good light transmittance, and the light transmittance of the bottom plate 120 can be ensured to reach 90-91%. The bottom plate 120 is also provided with a mounting hole 140, the mounting hole 140 is a through hole and extends along the thickness direction of the bottom plate 120, and a fastener can be inserted into the mounting hole 140. Of course, the mounting holes 140 on the bottom plate 120 and the mounting holes 140 on the panel 110 may have the same shape, for example, they are circular holes, and they may be coaxially disposed, that is, the central axes of the two are the same line with the central axis of the fastening member, so that the fastening member can smoothly pass through the mounting holes 140 on the bottom plate 120 and the panel 110 at the same time, and finally, the simultaneous connection of the light emitting assembly 200 and the bottom plate 120 and the panel 110 is realized. The mounting hole 140 penetrates through both surfaces of the base plate 120, which are oppositely disposed, such that the mounting hole 140 communicates the spacing gap 130 with the outside. Specifically, the two oppositely disposed surfaces of the base plate 120 are the inner and outer surfaces of the base plate 120, i.e., the mounting holes 140 extend through the inner and outer surfaces of the base plate 120, and obviously, the inner and outer surfaces are oriented in the opposite directions. The inner surface of the base plate 120 defines part of the boundary of the spacing gap 130, and the outer surface of the base plate 120 is in direct contact with the outside. The shape of the bottom plate 120 is a rectangular flat plate, but it is needless to say that the shape of the bottom plate 120 may be a circular, elliptical or positive variable flat surface, or the shape of the bottom plate 120 may be a curved surface, for example, an arc curved surface or a wave curved surface.

Since the bottom plate 120 and the panel 110 are spaced apart from each other, the space 130 has a through opening 131 at the periphery of the entire mounting assembly 100, and the space 130 is directly communicated with the outside through the through opening 131. In short, the perimeter of the spacing gap 130 is not closed, i.e., the entire mounting assembly 100 does not have a bezel, i.e., a bezel-less design. By not arranging a frame, the mounting assembly 100 is simple in structure and lighter in weight, so that the display screen 10 is convenient to mount, transport and store; the display screen 10 can be made thinner, for example, the total thickness of the display screen 10 can be about 13mm, which conforms to the trend of thinning the display screen 10. And, the outside air can flow out from the other end of display screen 10 through interval space 130 from the one end of display screen 10 to form fine air convection, at the in-process of air convection, the heat that light-emitting component 200 produced can be taken away fast to the outside cold air, prevents that the heat can not in time discharge and gathers in interval space 130, effectively avoids light-emitting component 200 to damage because of the high temperature, and then improves the life of display screen 10. Moreover, when the wind power is large, in the process that the airflow flows through the gap 130 of the display screen 10 from one end of the display screen 10 and flows out from the other end of the display screen 10, the wind power can be prevented from acting on the display screen 10, so that the wind resistance is effectively reduced, particularly, the display screen 10 which is hung (namely hoisted) is prevented from shaking violently due to the large wind power, the hoisting safety of the display screen 10 is improved, and the display effect of the display screen 10 is prevented from being damaged and influenced.

In some embodiments, the lighting assembly 200 includes a circuit board 210 and a lamp bead 220, and the circuit board 210 also has a light-transmitting property, i.e., the circuit board 210 is a transparent circuit board, so that a user can observe a scene on one side of the circuit board 210 through the circuit board 210 itself. Since the bottom plate 120, the panel 110 and the circuit board 210 have light transmittance at the same time, the light transmittance of the whole display screen 10 can be ensured, i.e. the scenery on the other side can be seen through the display screen 10 from one side. When the display screen 10 stops working, the display screen 10 with light transmission property does not form a shielding effect on light. The circuit board 210 has a mounting surface 230, the mounting surface 230 is disposed toward the panel 110, and the lamp beads 220 may be attached to the mounting surface 230. The quantity of lamp pearl 220 is a plurality of, and a plurality of lamp pearl 220 intervals set up on installation face 230, for example, lamp pearl 220 distributes in order on circuit board 210 with the matrix of multirow multiseriate. The shape of the bead 220 may be substantially rectangular parallelepiped, square, ellipsoid, spherical, etc., as required by the actual situation.

The lamp bead 220 is a Light Emitting Diode (LED) lamp bead, so that the LED lamp bead has the following advantages: first, there are not ultraviolet ray and infrared ray in the spectrum of the light-emitting line of lamp pearl 220, and the discarded object can be retrieved moreover, does not have pollution element such as mercury, for the green cold light source that can safe touch, and the glare is little and radiationless. And secondly, the lamp bead 220 has long service life and stronger anti-vibration capability. And thirdly, the light color changes are various, and colorful dynamic change effects and various patterns can be realized.

Referring to fig. 2, 3 and 4, in some embodiments, the circuit board 210 includes a cross beam 211 and a longitudinal beam 212, the lamp beads 220 are located on the cross beam 211 and the longitudinal beam 212, the number of the cross beam 211 and the number of the longitudinal beam 212 are both multiple, and the number of the cross beam 211 is greater than the number of the longitudinal beam 212. The longitudinal beams 212 extend in the vertical direction and the transverse beams 211 extend in the horizontal direction. The plurality of longitudinal beams 212 are disposed at intervals in a first direction, which is a longitudinal direction of the display screen 10. The cross beams 211 are spaced apart from each other along a second direction, which is a width direction of the display screen 10, and obviously, the first direction and the second direction are perpendicular to each other, and a distance between two adjacent longitudinal beams 212 is significantly larger than a distance between two adjacent cross beams 211. One end of the cross beam 211 is connected with one of the longitudinal beams 212, the other end of the cross beam 211 is connected with another adjacent longitudinal beam 212, an accommodating gap 240 is formed between the two cross beams 211 which are arranged at intervals, and the accommodating gap 240 can be rectangular or racetrack-shaped. For the manufacture of the circuit board 210, a plurality of receiving slots 240 may be formed on a flat seamless circuit board 210 at intervals, so as to form the circuit board 210 of this embodiment.

Since the circuit board 210 is formed with the plurality of receiving slots 240, on one hand, the total weight of the circuit board 210 can be reduced, so that the weight of the whole display screen 10 is reduced, which is more beneficial to the hanging installation (i.e. the hanging) of the display screen 10. On the other hand, the external light can pass through the receiving gap 240 without obstruction, thereby further improving the light transmittance of the circuit board 210. On the other hand, heat generated by the lamp beads 220 can be quickly radiated through the accommodating gaps 240, so that the heat dissipation effect of the display screen 10 is improved.

Referring to fig. 3, 4, 5 and 6, in some embodiments, the connection assembly 300 includes a first fixing block 310, the first fixing block 310 has a light-transmitting property, the first fixing block 310 includes a first connection portion 311, a first positioning piece 312 and a second positioning piece 313 that are connected to each other, the first connection portion 311 is located in the receiving slot 240, that is, the first connection portion 311 is sandwiched in the receiving slot 240 of two adjacent cross beams 211, a first through hole 311a is formed in the first connection portion 311, the first through hole 311a extends along a thickness direction of the display screen 10, and the first through hole 311a may be coaxially disposed with the mounting holes 140 on the bottom plate 120 and the panel 110. The first positioning piece 312 protrudes from the surface of the first connection part 311 and extends in the vertical direction; the second positioning piece 313 protrudes out of the surface of the first connecting portion 311 and extends in the vertical direction, and the first positioning piece 312 and the second positioning piece 313 are spaced apart in the thickness direction of the display screen 10.

In the installation process, the first connecting portion 311 is located in the accommodating gap 240, so that the two beams 211 form a clamping effect on the first connecting portion 311 to position the first connecting portion 311, the first positioning piece 312 is inserted into a gap between two adjacent lamp beads 220, and the two lamp beads 220 form a clamping effect on the first positioning piece 312 to position the first positioning piece 312. Meanwhile, the cross beam 211 is inserted into a gap between the first positioning piece 312 and the second positioning piece 313, and the first positioning piece 312 and the second positioning piece 313 clamp the cross beam 211. Crossbeam 211 and lamp pearl 220 can play fine limiting displacement to whole first fixed block 310 promptly. Of course, in order to better implement the installation of the first fixing block 310, interference generated during the installation process is prevented. The first coupling portion 311 may include two portions detachably coupled, with the first positioning piece 312 being located on one portion and the second positioning piece 313 being located on the other portion.

The fastener may be a screw, a pin, or the like, and when the fastener is simultaneously inserted into the first through hole 311a and the mounting hole 140 of the base plate 120 and the panel 110, both ends of the first connection portion 311 abut against the base plate 120 and the panel 110, respectively, thereby fixing the circuit board 210 between the base plate 120 and the panel 110 and preventing the circuit board 210 from shaking in the gap 130 between the base plate 120 and the panel 110. The first connecting portion 311 is located in the accommodating slot 240 at the edge of the circuit board 210, rather than locating the first connecting portion 311 in the accommodating slot 240 at the middle of the circuit board 210, and the first positioning piece 312 and the second positioning piece 313 clamp the two beams 211 at the end of the circuit board 210 in the width direction, so that the first fixing block 310 is disposed at the edge of the circuit board 210, the absorption and blocking of the first fixing block 310 to light can be reduced to the greatest extent, and the light transmittance of the display screen 10 is further improved. When the screw is screwed out, the panel 110 can be disassembled, so that the circuit board 210 and/or the lamp beads 220 can be effectively and quickly maintained, and the convenience of maintaining the display screen 10 is improved.

In some embodiments, the connection assembly 300 further includes a second fixing block 320, and the second fixing block 320 includes a second connection portion 321, a body portion 322, and a clip 323. The number of the second connecting portions 321 is two, one of the second connecting portions 321 is connected to one end of the main body portion 322, the other second connecting portion 321 is connected to the other end of the main body portion 322, that is, the two second connecting portions 321 are arranged at intervals along the extending direction of the main body portion 322, and the two second connecting portions 321 are located on the same side of the main body portion 322, so that the main body portion 322 and the two second connecting portions 321 jointly enclose to form a cavity 324, and the whole second fixing block 320 is of a flat-bottom U-shaped structure. The second connecting portion 321 has a second through hole 321a, the second through hole 321a extends along the thickness direction of the display screen 10, and the second through hole 321a may be coaxial with the mounting hole 140 on the bottom plate 120 and the panel 110. The number of the clamping strips 323 is also two, the two clamping strips 323 are located in the cavity 324, one clamping strip 323 is arranged close to one of the second connecting portions 321, the other main clamping strip 323 is arranged close to the other second connecting portion 321, one end of the clamping strip 323 is elastically connected with the main body portion 322, the other end of the clamping strip 323 is a free end, and the clamping strip 323 can be in snap connection with the longitudinal beam 212.

In the installation process, one of the second connecting portions 321 is located in the accommodating gap 240 between the two cross beams 211 on one side of the longitudinal beam 212, and the other two second connecting portions 321 is located in the accommodating gap 240 between the two cross beams 211 on the other side of the longitudinal beam 212, so that the longitudinal beam 212 is accommodated in the cavity 324 defined by the second connecting portions 321 and the main body portion 322, and the two cross beams 211 and the longitudinal beam 212 simultaneously limit the whole second fixing block 320. When the fasteners are simultaneously inserted into the second through holes 321a and the mounting holes 140 of the base plate 120 and the panel 110, one end of the second connecting portion 321 and the body portion 322 abut against the base plate 120 and the panel 110, respectively, thereby fixing the circuit board 210 between the base plate 120 and the panel 110 and preventing the circuit board 210 from shaking in the gap space 130 between the base plate 120 and the panel 110. Meanwhile, the main clamping strip 323 and the longitudinal beam 212 form a snap connection relationship, so that the mounting stability of the second fixing block 320 is further improved. When the second fixing block 320 is mounted on the circuit board 210, the longitudinal beam 212 is accommodated in the cavity 324 defined by the second connecting portion 321 and the main body portion 322, so that on one hand, the longitudinal beam 212 can limit the second fixing block 320, and on the other hand, the second fixing block 320 does not occupy other portions in the accommodating gap 240, thereby reducing the absorption and blocking effects of the second fixing block 320 on light to the maximum extent, and further improving the light transmittance of the display screen 10.

Referring to fig. 7 and 8, in some embodiments, the display screen 10 further includes a mounting plate 150, a cover plate 160, and a control assembly 163, where the mounting plate 150 is substantially elongated, the number of the mounting plates 150 is two, the two mounting plates 150 are spaced apart along the length direction of the display screen 10, and the mounting plates 150 are fixedly connected to the end portions of the base plate 120. The mounting plate 150 includes a hanging portion 151 outside the contour of the bottom plate 120, a fixing hole 151a is opened on the hanging portion 151, a bolt can be installed in the fixing hole 151a, and the bolt can fix the hanging portion 151 on a support, thereby realizing the hoisting of the whole display screen 10.

The cover plates 160 are connected to the base plate 120, the number of the cover plates 160 is two and the cover plates 160 are disposed near the mounting plate 150, the cover plates 160 and the base plate 120 together define a receiving cavity 162, the control component 163 is disposed in the receiving cavity 162, and the cover plates 160 can protect the control component 163. The control component 163 is used for transmitting current and performing communication control, for example, the control component 163 may include a power socket or a signal socket, and the power socket or the signal socket is in a pluggable modular design, so that the whole control component 163 is convenient to maintain, and when two display screens 10 are spliced, wireless connection can be realized through the power socket or the signal socket, so that the traditional wired connection mode is abandoned. The surface of the cover plate 160 is provided with heat dissipation fins 161, and the heat dissipation fins 161 can further improve the heat dissipation effect of the display screen 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A display screen, comprising:

the mounting assembly comprises a panel and a bottom plate which both have light transmission properties, wherein the panel and the bottom plate are arranged at intervals, and a spacing gap is formed between the panel and the bottom plate;

the light-emitting assembly is positioned in the gap and comprises a circuit board and a plurality of lamp beads, the circuit board is provided with a mounting surface facing the panel, and the lamp beads are arranged on the mounting surface at intervals; and

and the connecting assembly penetrates through the circuit board and is positioned in the gap, and the connecting assembly has light transmittance and is used for fixedly connecting the circuit board with the panel and the bottom plate.

2. The display screen of claim 1, wherein the circuit board comprises longitudinal beams and transverse beams, the mounting surfaces are located on the transverse beams and the longitudinal beams, the longitudinal beams are arranged at intervals along a first direction, the transverse beams are connected between two adjacent longitudinal beams and arranged at intervals along a second direction perpendicular to the first direction, and an accommodating gap is formed between the two transverse beams arranged at intervals.

3. The display screen of claim 2, further comprising a fastening piece, wherein the connecting assembly comprises a first fixing block, the first fixing block comprises a first connecting portion and a first positioning piece which are connected with each other, the first positioning piece is inserted into a gap between two adjacent lamp beads, the first connecting portion is located in the accommodating gap and provided with a first through hole, the bottom plate and the panel are both provided with mounting holes corresponding to the first through holes, and the fastening piece penetrates through the first through hole and the mounting holes.

4. The display screen of claim 3, wherein the first connecting portion is located in the accommodating slot at the extreme edge of the circuit board; the first fixing block further comprises a second positioning piece, the second positioning piece and the first positioning piece are arranged at intervals, and the cross beam is clamped in a gap between the first positioning piece and the second positioning piece.

5. The display screen of claim 2, further comprising a fastener, wherein the connecting assembly comprises a second fixing block, the second fixing block comprises a second connecting portion and a main body portion, second through holes are formed in the second connecting portion at intervals, two ends of the main body portion are connected between the second connecting portion, the second connecting portion is located in the accommodating gap, the longitudinal beam is located in a cavity surrounded by the main body portion and the second connecting portion, mounting holes corresponding to the second through holes are formed in the bottom plate and the panel, and the fastener penetrates through the second through holes and the mounting holes.

6. The display screen of claim 5, wherein the second fixing block further comprises a clamping strip connected with the main body portion, and the clamping strip is located in the cavity and connected with the longitudinal beam in a buckling mode.

7. The display screen of claim 1, wherein the spacing void forms a through opening at a periphery of the mounting assembly, the through opening communicating with an exterior.

8. The display screen of claim 1, further comprising a mounting plate fixed on the bottom plate, wherein the mounting plate comprises a hanging portion located outside the outline of the bottom plate, and the hanging portion is provided with a fixing hole for fixing the mounting plate.

9. The display screen of claim 1, further comprising a cover plate and a control component, wherein the cover plate is connected with the bottom plate, the cover plate and the bottom plate jointly enclose an accommodating cavity, the control component is located in the accommodating cavity, and heat dissipation fins for dissipating heat are arranged on the surface of the cover plate.

10. The display screen of claim 1, wherein the mounting assembly comprises a polycarbonate assembly or a clear acrylic assembly; the connecting assembly comprises a polycarbonate assembly or a transparent acrylic assembly.

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