WO2021237953A1

WO2021237953A1 - Display screen and intelligent blackboard

Info

Publication number: WO2021237953A1
Application number: PCT/CN2020/109407
Authority: WO
Inventors: 周雪松; 王彬
Original assignee: 江苏欧帝电子科技有限公司
Priority date: 2020-05-29
Filing date: 2020-08-15
Publication date: 2021-12-02
Also published as: CN111554136A

Abstract

A display screen (100) and an intelligent blackboard, relating to the technical field of teaching devices. The display screen (100) comprises a bezel, a display panel (103) embedded in the bezel, and a backlight plate (190). An integrated fixing frame (180) is provided in the bezel, and the fixing frame (180) is located between the display panel (103) and the backlight plate (190); the bezel is connected to a pressing member, and the pressing member is used for pressing the backlight plate (190) on the fixing frame (180), so that the backlight plate (190) is fixed. The influence of an arrangement mode of reinforcing ribs (191) on the backlight plate (190) on the fixing strength of the backlight plate (190) is not required to be considered, so that the structure of the bezel is only required to be adjusted when the size or the design requirement of the display screen (100) is changed, the costs are reduced, and the convenience of fixing the backlight plate (190) is improved. According to the intelligent blackboard comprising the display screen (100), the design process is not affected by the arrangement mode of the reinforcing ribs (191), and the costs can be effectively saved.

Description

Display screen and smart blackboard

Technical field

The invention relates to the technical field of teaching equipment, and more specifically, to a display screen and a smart blackboard.

Background technique

As the core component of the smart blackboard, the display screen usually includes at least a display function and a writing function. In teaching, conference, training and other environments that require touch operation, the display screen of some smart blackboards should also include touch functions.

In the related field, the display panel and the backlight board used to realize the display function of the smart blackboard display screen are generally arranged on the frame of the display screen. Among them, for the display panel, the general method is to directly embed it in the card slot of the frame, or to set it in the frame through a clamping piece. For example, the Chinese document with the application number 2017214796947 discloses a smart blackboard frame structure and a smart blackboard. The frame structure includes a frame body. The frame body is sequentially provided with a glass plate groove, a display plate groove, and a diaphragm groove, which are respectively used for Fix the glass blackboard, display panel and diaphragm. The glass plate groove, the display panel groove and the diaphragm groove are opened on the frame body and form an integral structure with the frame body; or the diaphragm pressure plate and the display panel pressure plate cooperate with the frame body to form the display plate groove and the diaphragm groove , In order to realize the fixation of the diaphragm and the display panel on the blackboard frame.

In addition, for the fixation of the backlight board, the current commonly used method is to provide a number of reinforcing ribs on the backlight board, and to fix the backlight board on the frame by connecting the reinforcing ribs to the frame. However, when using the above method to fix the backlight board, in order to improve the stability of the connection, it is generally necessary to arrange the reinforcing ribs in a horizontal and vertical connection, so that the reinforcing ribs are connected to the upper frame and the side frame at the same time and/or at the same time. On the lower frame and the side frame, the process of connecting the stiffener and the back plate is complicated and not convenient enough. At the same time, when the size of the display screen or the design requirements change, the arrangement of the stiffeners needs to be re-adjusted and the mold is reopened, which greatly increases the cost and reduces the design space.

Summary of the invention

1. The technical problem to be solved by the invention

The purpose of the present invention is to overcome the inconvenience of fixing the backlight board through the reinforcement ribs connected to the frame in the prior art, and provide a display screen. In this solution, the backlight plate is fixed by pressing the backlight plate on the fixing frame by the pressing member, and the arrangement of the reinforcing ribs does not need to be considered, which is more convenient.

Another object of the present invention is to provide a smart blackboard, the design of the display screen is not affected by the arrangement of the ribs, which can effectively save costs.

2. Technical solution

In order to achieve the above objective, the technical solution provided by the present invention is:

A display screen of the present invention includes a frame, a display panel and a backlight board embedded in the frame, an integrated fixed frame is arranged in the frame, and the fixed frame is located between the display panel and the backlight board; A pressing member is connected to the frame, and the pressing member is used for pressing the backlight board on the fixing frame.

Further, the fixing frame is formed by a plurality of fixing members fixedly connected by laser welding.

Further, a reflector is provided between the fixing frame and the display panel; the fixing member includes a pressing surface and a supporting surface, and the pressing member presses the edge of the backlight board on the supporting surface, and The pressing surface has a tendency to press the reflector on the display panel.

Further, the pressing surface is an inclined surface disposed toward the display panel.

Further, a convex edge is provided on the side of the reflector facing away from the backlight plate, the side surface of the fixing member opposite to the supporting surface is a pressing surface, and the convex edge is pressed against the Between the pressing surface and the display panel.

Further, a press-fitting part is provided in the frame, the press-fitting part has a clamping part and a press-fitting part, and the press-fitting surface of the fixing part is provided with a clamping groove and a press-fitting convex strip. The mounting protruding bar is pressed on the clamping part, and the pressing part is clamped in the clamping groove.

Further, at least one light bar is provided on the side of the backlight board facing the display panel, at least one reinforcing rib is provided on the side of the backlight board facing away from the display panel, and the light bar and the reinforcing rib are arranged perpendicular to each other .

Further, the frame includes a lower frame and an upper frame, and two side frames are connected between the lower frame and the upper frame; and,

The pressing member includes a first pressing frame connected to the lower frame, a second pressing frame connected to the upper frame, and a third pressing frame connected to the side frame; and ,

The lower frame is provided with a first embedding groove, the first compression frame has a first embedding portion and an enclosing groove, the enclosing groove surrounds the mounting groove of the lower frame, and the first embedding portion is embedded In the first embedding groove; and/or,

A second embedding groove is provided on the upper frame, the second compression frame has a second embedding portion, and the second embedding portion is embedded in the second embedding groove.

Further, the third pressing frame includes a pressing plate and a connecting plate that are arranged perpendicular to each other, the connecting plate is connected to the side frame, and the pressing plate is used to press the edge of the backlight plate on Above the fixed frame.

A smart blackboard includes the above-mentioned display screen, and a writing board is connected to at least one of the left and right sides of the display screen.

3. Beneficial effects

Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

(1) The display screen of the present invention includes a frame, a display panel and a backlight board embedded in the frame, an integrated fixed frame is arranged in the frame, and the fixed frame is located between the display panel and the backlight board; the frame is connected with The pressing member is used to press the backlight board on the fixing frame to complete the fixing of the backlight board; therefore, the display screen of the present invention does not need to consider the arrangement of the reinforcing ribs on the backlight board and the fixing strength of the backlight board As a result, when the size or design requirements of the display screen are changed, only the structure of the frame needs to be adjusted, which effectively reduces the cost and improves the convenience of fixing the backlight board.

(2) In the present invention, a reflector is provided between the fixing frame and the display panel; the fixing member includes a pressing surface and a supporting surface, and the pressing member presses the edge of the backlight plate on the supporting surface; the pressing surface faces the display The inclined surface of the panel, and the pressing surface has a tendency to press the reflector on the display panel, the side of the reflector facing away from the backlight is provided with a convex edge, and the side of the fixing member opposite to the supporting surface is the pressing surface Therefore, the fixing frame can press the reflector on the display panel by pressing the convex edge to prevent light leakage of the light bar. At the same time, the reflector can cooperate with the frame to press the display panel tightly to realize the fixation of the display panel.

(3) In the smart blackboard of the present invention, the backlight board of the display screen is fixed on the fixed frame by pressing parts, so the design of the display screen is not affected by the arrangement of the ribs, which can effectively save Cost; in addition, the overall structure of the display screen is more stable, and the display panel is not prone to dislocation and sliding.

Description of the drawings

Figure 1 is a schematic diagram of the arrangement of stiffeners in a common display screen;

Figure 2 is a schematic diagram of the connection mode of the backlight board in a common display screen;

Fig. 3 is a schematic diagram of the structure of the display screen of the present invention;

Figure 4 is a schematic diagram of the structure of the reinforcing ribs on the backlight plate of the present invention;

FIG. 5 is a schematic diagram of the cooperation relationship among the pressing frame, the backlight board and the fixing frame in the present invention;

6 is a schematic diagram of the connection mode of the upper frame and the lower frame with the backlight board in the present invention;

7 is a schematic diagram of the cooperation relationship between the first compression frame and the upper frame, and the second compression frame and the lower frame in the present invention;

8 is a schematic diagram of the connection mode of the side frame and the backlight board in the present invention;

FIG. 9 is a schematic diagram of the cooperation relationship between the third compression frame and the side frame in the present invention.

FIG. 10 is a schematic diagram of the structure of the smart blackboard of the present invention.

The label description in the schematic diagram:

100. Display screen; 101, writing glass; 102, touch panel; 103, display panel; 104, first pressing part; 1041, first clamping part; 1042, first pressing part; 105, second pressing Mounting parts; 1051, second clamping part; 1052, second pressing part; 106, third pressing part; 1061, third clamping part; 1062, third pressing part;

110. Lower frame; 111, first connection part; 112, first support part; 113, first embedding groove;

120. Upper frame; 121, second connection part; 122, second support part; 123, second embedding groove;

130. Side frame; 131. The third support part; 132. The third connection part;

140. First compression frame; 141. First compression strip; 142. Limit strip; 143. First embedded part; 144. Surrounding groove;

150. The second compression frame; 151. The second compression strip; 152. The second embedding part;

160. The third compression frame; 161. The compression plate; 162. The connecting plate;

170, reflector; 171, lamp hole;

180. Fixing frame; 181. The first fixing member; 1811. The first clamping groove; 1812. The first press-fit protruding bar; 1813. The first pressing surface; 1814. The first supporting surface; 182. The second fixing member. 1821, the second clamping groove; 1822, the second pressing protrusion; 1823, the second pressing surface; 1824, the second supporting surface; 183, the third fixing member; 1831, the third clamping groove; 1832 The third press-fit protruding strip; 1833, the third pressing surface; 1834, the third supporting surface; 1835, the supporting groove;

190. Backlight board; 191. Reinforcing ribs; 192. Light bar;

200. Writing board.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

The structure, ratio, size, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for the understanding and reading of those who are familiar with this technology, and are not used to limit the implementation of the present invention. It has no technical significance. Any structural modification, proportional relationship change, or size adjustment should still fall within the technology disclosed in the present invention without affecting the effects and objectives that can be achieved by the present invention. The content must be covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and other terms quoted in this specification are only for ease of description, not to limit the scope of implementation. The change or adjustment of the relative relationship shall also be regarded as the applicable scope of the present invention without substantial change of the technical content.

FIG. 1 shows the arrangement of the reinforcing ribs 191 on the back of the display screen 100 in a common smart blackboard. For the consideration of stably fixing the backlight board 190 on the frame, the ribs 191 are usually arranged in a horizontal and vertical connection, that is, the ribs 191 are connected to the upper frame 120 and the side frame 130 at the same time and/or are connected to the lower frame at the same time. 110 and the side frame 130, so that the backlight plate 190 can be connected to the upper frame 120, the side frame 130, and the lower frame 110 at the same time.

As an example, FIG. 2 shows the connection mode of the backlight board 190 and the lower frame 110 of the display screen 100 in a common smart blackboard. Specifically, the reinforcing ribs 191 are fixedly arranged on the backlight board 190, for example, by a fixed connection method of welding, or a fixed connection method of bolt connection. The reinforcing rib 191 has a connecting end protruding from the edge of the backlight board 190, and the connecting end is connected to the lower frame 110, generally by a bolt connection, to fix the backlight board 190 and the lower frame 110. Similarly, the backlight plate 190 is of course provided with reinforcing ribs 191 that can be connected to the upper frame 120 and/or the side frame 130. At this time, by connecting the reinforcing rib 191 with the upper frame 120, the side frame 130, and the lower frame 110, the backlight board 190 and the frame of the display screen 100 can be fixed.

However, the education equipment industry is developing rapidly and the product iteration cycle is relatively short. When the size or design requirements of the display screen 100 change, it is usually necessary to adjust the size and/or frame structure of the display screen 100. The arrangement, size, and position of the connecting holes of the reinforcing ribs 191 need to be redesigned and reopened. Manufacturing greatly increases the production cost and reduces the design space of the display screen 100.

In order to solve the above problem, referring to FIG. 3, the present embodiment provides a display screen. The display screen 100 presses the backlight plate 190 on the fixing frame by a pressing member, thereby fixing the backlight plate 190 on the frame of the display screen 100. Above. Therefore, referring to Fig. 4, in the display screen 100 of this embodiment, the reinforcing ribs 191 on the backlight plate 190 no longer have the function of connecting the backlight plate 190 to the frame, and thus can be arranged in a relatively simple manner. In addition, when the size of the display screen 100 and/or the structure of the frame is changed, the display screen of this embodiment only needs to adjust the structure and size of the pressing member, which reduces the cost.

Specifically, referring to FIG. 4, the display screen 100 of this embodiment includes a frame, a display panel 103, a fixing frame 180, a backlight plate 190, and a pressing member. The display panel 103 and the backlight plate 190 are embedded in the frame; the fixing frame 180 is an integrated structure, and the fixing frame 180 is arranged in the frame and located between the display panel 103 and the backlight plate 190; the pressing member is connected on the frame and The backlight plate 190 is pressed tightly on the fixing frame 180 to complete the fixing of the backlight plate 190.

The specific structure of the display panel 103 is not limited. It may be a liquid crystal display panel, or a liquid crystal display panel commonly used in related fields, such as but not limited to the display panels disclosed in Chinese patent documents with application numbers 2019110888750 and 2019110815529.

The fixing frame 180 may be formed by a plurality of fixing parts fixedly connected by laser welding, and the fixing parts may be a profile formed by a cold stamping process.

At least one light bar 192 is provided on the side of the backlight board 190 facing the display panel 103, and at least one reinforcing rib 191 is provided on the side of the backlight board 190 facing away from the display panel 103. When there are multiple light bars 192, the multiple light bars 192 can be arranged in parallel along the horizontal direction, and the light beads on the light bar 192 can be arranged equidistantly in the longitudinal direction, and the positions of the light beads on different light bars 192 are the same. correspond. When there are multiple reinforcement ribs 191, the multiple reinforcement ribs 191 may be arranged in parallel along the longitudinal direction. The light bars 192 and the reinforcing ribs 191 can be arranged perpendicularly to each other, so that the multiple reinforcing ribs 191 and the multiple light bars 192 form a horizontal and vertical cross grid, and by arranging connecting bolts at the intersection of the grids, directly connect the The plurality of reinforcing ribs 191, the plurality of light bars 192 and the backlight board 190 are connected to form an integral structure.

Specifically, a plurality of light bars 192 are provided on the first side surface of the backlight plate 190, and a plurality of reinforcing ribs 191 are provided in parallel on the second side surface of the backlight plate. At least two reinforcing ribs 191 in 191 have intersections, and fixing bolts are provided at the intersections, and the fixing bolts can connect the light bar 192, the backlight plate 190 and the reinforcing ribs 191.

At this time, since the light bar 192 is connected to at least two reinforcing ribs 191 by fixing bolts, the light bar 192 can be more stably connected to the backlight board 190, preventing the light bar 192 from falling off, making the overall structure of the backlight board 190 more stable. Stablize.

Wherein, the reinforcing ribs 191 are arranged on the second side surface along the first direction, and the plurality of reinforcing ribs 191 are arranged along the second direction. The plurality of reinforcing ribs 191 can be arranged at equal distances, or arranged at variable distances. Specifically, it can be adjusted according to the size of the backlight board 190 without limitation.

The length of the rib 191 in the first direction is smaller than the length of the backlight plate 190 in the first direction, so that the edge of the backlight plate 190 can protrude from the end of the rib 191, so that the protruding edge of the backlight plate 190 can be arranged with The frame of the display screen 100 is connected, so that the backlight board 190 is fixed.

The middle of the reinforcing rib 191 in the second direction can be recessed and form a fixing groove. The fixing groove is provided with a fixing hole for the fixing bolt to pass through; the light bar 192 and the backlight board 190 are both provided at positions corresponding to the fixing holes There are connection holes. When connecting, the studs of the fixing bolts can be passed through the fixing holes and the connecting holes on the backlight board 190 in sequence, and connected with the connecting holes on the light bar 192, or through the connecting holes on the light bar 192 to connect with the fixing nut.

The size of the nut of the fixing bolt can be smaller than the size of the fixing groove. Therefore, when the light bar 192, the backlight plate 190 and the reinforcing rib 191 are connected, the head of the fixing bolt can be accommodated in the fixing groove, so that the fixing bolt can be completely hidden in the fixing groove. The inside of the reinforcing rib 191 further makes the structure of the backlight board 190 more compact, and improves the overall appearance of the backlight board 190.

In addition, the two sides of the reinforcing rib 191 can be folded toward the backlight plate 190 to form a supporting edge, and a gap that avoids the stud of the fixing bolt is formed between the two supporting edges, so that the stud of the fixing bolt can pass through the gap and be in contact with each other. The connection holes on the backlight board 190 are connected.

The light bar 192 and the reinforcing rib 191 can be arranged perpendicular to each other, so that the projection of the light bar 192 and the reinforcing rib 191 on the second side surface forms a grid-like pattern, and each intersection point on the grid-like pattern can be set The bolts are fixed to further improve the stability of the connection between the light bar 192 and the reinforcing rib 191.

When the size of the display panel 103 in the display screen 100 is large, due to the limitation of the length of the light bar 192, only one light bar 192 provided in the length direction of the light bar 192 may not be able to complete the light source supply to the entire display panel 103. Therefore, the multiple light bars are divided into at least two light bar groups, and at least two light bar groups can be arranged side by side along the length direction of the light bar 192. At the same time, the light bars 192 in the same light bar group can be arranged parallel to each other.

A plurality of lamp beads are equidistantly arranged on the light bar 192, and the positions of the lamp beads on the light bar 192 in the same light bar group correspond to each other, so that the lamp beads in the same light bar group are arranged in an array, thereby improving the display panel 103 The uniformity of the received light.

In addition, referring to FIG. 4, a reflector 170 may be provided between the fixed frame 180 and the display panel 103. The reflector 170 is specifically used to gather the light emitted by the lamp beads on the light bar 192, thereby improving the display effect of the display panel 103. . The reflector 170 may be provided with lamp holes 171 that allow lamp beads to extend into the reflector 170. The number of lamp holes 171 is the same as the number of lamp beads, and the position of the lamp hole 171 corresponds to the position of the lamp beads.

In order to fix the reflector 170, in this embodiment, the fixing member may include a pressing surface and a supporting surface. The tendency of the cover 170 to be pressed tightly on the display panel 103. Wherein, the pressing surface may be an inclined surface disposed toward the display panel 103, so as to increase the contact area between the pressing surface and the reflector 170 and improve the fixing effect of the reflector 170.

The side of the reflector 170 facing away from the backlight plate 190 may be provided with a protruding edge. The side of the fixing member opposite to the supporting surface is a press-fitting surface, and the convex edge can be pressed between the press-fitting surface and the display panel 103, thereby The fixing effect of the fixing member on the reflector 170 is further improved.

In order to improve the effect of fixing the display panel 103, a pressing part may be provided in the frame. The pressing part has a clamping part and a pressing part, and the pressing surface of the fixing part is provided with a clamping groove and a pressing protrusion. The press-fit protruding bar is pressed tightly on the clamping part, and the press-fit part is clamped in the clamping groove.

In addition to the display panel 103 of this embodiment, a touch panel 102 may be provided to realize the touch function of the display screen 100. The touch panel 102 may specifically be a capacitive touch panel, and its specific structure is not limited, and it may also be a touch panel commonly used in related fields. A writing glass 101 may be provided outside the touch panel 102 to realize the writing function of the display screen 100.

As an example, FIGS. 6 to 9 show the connection mode of the backlight plate 190 and each frame in the display screen 100 of this embodiment. Specifically, the frame of the display screen 100 includes a lower frame 110 and an upper frame 120. Two side frames 130 are connected between the lower frame 110 and the upper frame 120; the pressing member includes a first pressing frame 140 connected to the lower frame 110 , The second compression frame 150 connected to the upper frame 120, and the third compression frame 160 connected to the side frame 130; the fixing frame 180 includes a first fixing member 181 connected to the lower frame 110, connected to the upper frame The second fixing member 182 on the 120, and the third fixing member 183 connected to the side frame 130; a first pressing member 104 is provided at a position corresponding to the first fixing member 181 in the frame of the display screen 100, and the second A second pressing member 105 is provided at a position corresponding to the two fixing members 182, and a third pressing member 106 is provided at a position corresponding to the third fixing member 183.

More specifically, referring to FIGS. 6 and 7, the lower frame 110 includes a lower frame body, and a mounting groove connected to the lower frame body. The lower frame body includes a first supporting portion 112 and a first connecting portion 111, the mounting groove is connected to the first connecting portion 111, and the mounting groove and the lower frame body are formed with a first inserting groove at the position of the first connecting portion 111 113. A limit slot is opened on the side of the lower frame body facing away from the display panel 103. Among them, the installation slot can be used to install a button module, or a speaker, or an interface module.

The first pressing frame 140 has a first pressing bar 141, a limiting bar 142, a first embedding portion 143 and a surrounding groove 144. Wherein, the first pressing bar 141 is arranged along the edge of the backlight board 190, the position of the limiting bar 142 corresponds to the limiting groove and can be inserted into the limiting groove, and the first embedding portion 143 is arranged facing the first embedding groove 113 It can be embedded in the first embedding groove 113, and the position of the surrounding groove 144 corresponds to the position of the installation groove and can be arranged to surround the installation groove.

The first fixing member 181 has a first clamping groove 1811, a first press-fitting protrusion 1812, a first pressing surface 1813, a first supporting surface 1814, and a first press-fitting surface. Wherein, the first pressing surface 1813 can be pressed on the side surface of the reflector 170, the first pressing surface is disposed toward the display panel 103, and the first supporting surface 1814 is disposed opposite to the first pressing surface and facing away from the display panel 103. The first press-fit protruding strip 1812 is provided on the first press-fitting surface, and the free end of the first press-fit protruding strip 1812 is set toward the display panel 103; the first clamping groove 1811 is opened on the first press-fitting surface, Moreover, the cross section of the first clamping groove 1811 is approximately L-shaped, and the first press-fitting convex strip 1812 can be used as one of the groove walls of the first clamping groove 1811.

The first pressing member 104 has a first clamping portion 1041 and a first pressing portion 1042. Among them, the first clamping portion 1041 is disposed toward the first clamping groove 1811 and can be clamped in the first clamping groove 1811; the first pressing portion 1042 is used to support the first pressing protrusion 1812, that is, the first pressing protrusion 1812. The press-fit protruding strip 1812 can be press-fitted on the first press-fit part 1042. In addition, when the touch panel 102 is provided, an additional function of the first pressing part 1042 is that it can be located between the touch panel 102 and the display panel 103 to separate the touch panel 102 and the display panel 103 to prevent touching. Interference occurs between the control panel 102 and the display panel 103; the second function and another additional function is to press the edge of the touch panel 102 on the lower frame 110.

When assembling the display screen 100, first put the writing glass 101 and the touch panel 102 into the frame in sequence, and support the first pressing part 1042 of the first pressing part 104 on the touch panel 102; then the display panel 103 Is supported on the upper side of the first pressing portion 1042, and the reflector 170 is placed on the display panel 103; and then the first fixing member 181 is placed in the frame, so that the first clamping portion 1041 is locked into the first In the clamping groove 1811, and the first pressing protrusion 1812 is supported on the upper side of the first pressing part 1042, the first fixing member 181 is connected to the lower frame 110 with connecting bolts; finally, the backlight plate 190 is placed on the first pressing part 1042. The supporting surface 1814 connects the first pressing frame 140 to the lower frame 110 so that the first pressing bar 141 presses the backlight plate 190 tightly.

Referring to FIGS. 6 and 7, the upper frame 120 includes a second supporting portion 122 and a second connecting portion 121, and the second connecting portion 121 faces away from the second embedding groove 123 on the side surface of the display panel 103. The first supporting portion 112 and the second supporting portion 122 can cooperate with each other to fix the writing glass 101 on the frame.

The second compression frame 150 has a second compression strip 151 and a second insertion portion 152. The second pressing bar 151 is disposed along the edge of the backlight board 190, and the second embedding portion 152 is disposed toward the second embedding groove 123 and can be embedded in the second embedding groove 123.

The second fixing member 182 has a second clamping groove 1821, a second pressing protrusion 1822, a second pressing surface 1823, a second supporting surface 1824, and a second pressing surface. Wherein, the second pressing surface 1823 can be pressed against the side surface of the reflector 170, the second pressing surface is disposed toward the display panel 103, and the second supporting surface 1824 is disposed opposite to the second pressing surface and facing away from the display panel 103. The second press-fitting convex strip 1822 is arranged on the second press-fitting surface, and the free end of the second press-fitting convex strip 1822 is set toward the display panel 103; the second clamping groove 1821 is opened on the second press-fitting surface, Moreover, the cross section of the second clamping groove 1821 is substantially L-shaped, and the second press-fitting convex strip 1822 can be used as one of the groove walls of the second clamping groove 1821.

The second pressing member 105 has a second clamping portion 1051 and a second pressing portion 1052. Among them, the second clamping portion 1051 is disposed toward the second clamping groove 1821 and can be clamped in the second clamping groove 1821; the second pressing portion 1052 is used to support the second pressing protrusion 1822, that is, the second pressing protrusion 1822. The press-fit protruding strip 1822 can be press-fitted on the second press-fit part 1052.

8 and 9, the side frame 130 includes a third supporting portion 131 and a third connecting portion 132, the third supporting portion 131 can be supported on the writing glass 101, and the third connecting portion 132 is disposed on the third supporting portion 131 .

The third pressing frame 160 includes a pressing plate 161 and a connecting plate 162. Wherein, the connecting plate 162 is connected to the third connecting portion 132, and the pressing plate 161 is arranged perpendicular to the connecting plate 162.

The third fixing member 183 includes a third clamping groove 1831, a third pressing protrusion 1832, a third pressing surface 1833, a third supporting surface 1834, a supporting groove 1835, and a third pressing surface. Among them, the third pressing surface 1833 can be pressed against the side surface of the reflector 170, the third pressing surface is disposed toward the display panel 103, and the third supporting surface 1834 is disposed opposite to the third pressing surface and facing away from the display panel 103. The third press-fit protruding strip 1832 is provided on the third press-fitting surface, and the free end of the third press-fit protruding strip 1832 is set toward the display panel 103; the third clamping groove 1831 is opened on the third press-fitting surface, Moreover, the cross-section of the third clamping groove 1831 is approximately L-shaped, and the third press-fitting convex strip 1832 can be used as one of the groove walls of the third clamping groove 1831. The connecting plate 162 has a bent part. When the third fixing member 183 is connected to the side frame 130, the bent part can be supported by the supporting groove 1835, so that the free end of the connecting plate 162 faces the side of the side frame 130 and can press the backlight board. The edge of 190.

The third pressing part 106 has a third clamping part 1061 and a third pressing part 1062. Among them, the third clamping portion 1061 is disposed toward the third clamping groove 1831 and can be clamped in the third clamping groove 1831; the third pressing portion 1062 is used to support the third pressing protrusion 1832, namely the third The press-fit protruding strip 1832 can be press-fitted on the third press-fit part 1062.

During the assembling process of the display screen 100 of this embodiment, the matching relationship between the pressing part, the fixing part, the pressing part, the backlight board, the display panel, the touch panel, the writing glass and the frame is only the following frame 110 as an example. The matching relationship between the upper frame 120 and the side frame 130 may refer to the matching relationship at the lower frame 110, and the relevant content will not be repeated in this embodiment.

It should be noted that the first fixing piece 181, the second fixing piece 182, and the two third fixing pieces 183 can be connected by laser welding before assembling, or laser welding can be performed after they are connected to the frame. .

In addition, this embodiment also provides a smart blackboard, which is formed by splicing a display screen 100 and at least one writing board 200. For example, a smart blackboard may be formed by splicing a display screen 100 and a writing board 200, or may be formed by splicing a display screen 100 and writing boards 200 located on both sides of the display screen 100.

The present invention and its embodiments are schematically described above, and the description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited to this. Therefore, if a person of ordinary skill in the art receives its enlightenment and does not deviate from the purpose of the present invention, without creative design, structural methods and embodiments similar to the technical solution shall fall within the protection scope of the present invention. .

Claims

A display screen includes a frame, a display panel (103) and a backlight board (190) embedded in the frame, and is characterized in that: an integrated fixed frame (180) is arranged in the frame, and the fixed frame (180) is located between the display panel (103) and the backlight board (190); a pressing member is connected to the frame, and the pressing member is used to press the backlight board (190) against the fixed frame (180) Above.
The display screen according to claim 1, wherein the fixing frame (180) is formed by a plurality of fixing parts fixedly connected by laser welding.
The display screen according to claim 1, characterized in that: a reflector (170) is provided between the fixing frame (180) and the display panel (103); the fixing member includes a pressing surface and a supporting surface The pressing member presses the edge of the backlight plate (190) on the supporting surface, and the pressing surface has a tendency to press the reflector (170) on the display panel (103).
The display screen according to claim 3, wherein the pressing surface is an inclined surface facing the display panel (103).
A display screen according to claim 3 or 4, characterized in that: the reflector (170) is provided with a protruding edge on the side facing away from the backlight plate (190), and the fixing member is connected with the The opposite side surface of the supporting surface is a pressing surface, and the protruding edge is pressed between the pressing surface and the display panel (103).
The display screen according to claim 5, characterized in that: a pressing part is provided in the frame, the pressing part has a clamping part and a pressing part, and the pressing surface of the fixing part is provided with There are a clamping groove and a press-fitting convex strip, the press-fitting convex strip is pressed on the clamping part, and the pressing part is clamped in the clamping groove.
The display screen according to claim 1, wherein at least one light bar (192) is provided on the side of the backlight plate (190) facing the display panel (103), and the backlight plate (190) At least one reinforcing rib (191) is arranged on the side facing away from the display panel (103), and the light bar (192) and the reinforcing rib (191) are arranged perpendicular to each other.
The display screen according to claim 1, wherein the frame includes a lower frame (110) and an upper frame (120), and two frames are connected between the lower frame (110) and the upper frame (120). Side frames (130); and,

The pressing member includes a first pressing frame (140) connected to the lower frame (110), a second pressing frame (150) connected to the upper frame (120), and a second pressing frame (150) connected to the lower frame (110). The third compression frame (160) on the side frame (130); and,

The lower frame (110) is provided with a first embedding groove (113), the first compression frame (140) has a first embedding portion (143) and a surrounding groove (144), the surrounding groove (144) An installation groove surrounding the lower frame (110) is provided, and the first embedding portion (143) is embedded in the first embedding groove (113); and/or,

The upper frame (120) is provided with a second embedding groove (123), the second pressing frame (150) has a second embedding portion (152), and the second embedding portion (152) is embedded in the In the second embedding groove (123).
The display screen according to claim 8, characterized in that: the third pressing frame (160) comprises a pressing plate (161) and a connecting plate (162) arranged perpendicular to each other, and the connecting plate (162) ) Is connected to the side frame (130), and the pressing plate (161) is used to press the edge of the backlight plate (190) on the fixing frame (180).
A smart blackboard, characterized in that it comprises the display screen (100) according to any one of claims 1-9, and a writing board (200) is connected to at least one of the left and right sides of the display screen (100). ).