A display screen and smart blackboard

Abstract

The present invention discloses a display screen and a smart blackboard, and belongs to the technical field of teaching equipment. The display screen of the present invention includes a frame and a display panel and a backlight panel embedded in the frame. An integrated fixing frame is provided in the frame, and the fixing frame is located between the display panel and the backlight panel; a clamping member is connected to the frame, and the clamping member is used to clamp the backlight panel onto the fixing frame, thereby completing the fixation of the backlight panel; therefore, the display screen of the present invention does not need to consider the influence of the arrangement of the reinforcing ribs on the backlight panel on the fixing strength of the backlight panel, so that when the size or design requirements of the display screen change, it is only necessary to adjust the structure of the frame, which effectively reduces the cost and improves the convenience of fixing the backlight panel. The design process of the smart blackboard including the display screen of the present invention is not affected by the arrangement of the reinforcing ribs, which can effectively save costs.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching equipment, and more specifically, to a display screen and a smart blackboard. Background Art

[0002] As the core component of a smart blackboard, the display screen usually includes at least display and writing functions. In environments such as teaching, conferences, and training that require touch operations, the display screens of some smart blackboards should also include touch functions.

[0003] In the relevant field, the display panel and backlight panel 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 practice is to directly embed it in the card slot of the frame, or to be clamped in the frame through a clamp. For example, the Chinese document with application number 2017214796947 discloses a smart blackboard frame structure and a smart blackboard, the frame structure, including a frame body, on which a glass plate groove, a display panel groove and a diaphragm groove are sequentially arranged, which are used to fix the glass blackboard, the display panel and the diaphragm respectively. The glass plate groove, the display panel groove and the diaphragm groove are opened on the frame body, and are an integrally formed structure with the frame body; or a diaphragm pressing plate and a display panel pressing plate are used to cooperate with the frame body to form a display panel groove and a diaphragm groove, so as to fix the diaphragm and the display panel on the blackboard frame.

[0004] In addition, for fixing the backlight panel, the commonly used method is to set a number of reinforcing ribs on the backlight panel, and fix the backlight panel to the frame by connecting the reinforcing ribs to the frame. However, when the backlight panel is fixed by the above method, in order to improve the stability of the connection, it is generally necessary to arrange the reinforcing ribs in a horizontal and vertical manner, so that the reinforcing ribs are connected to the upper frame and the side frame at the same time and / or connected to the lower frame and the side frame at the same time. Therefore, the process of connecting the reinforcing ribs and the back panel is relatively complicated and inconvenient. At the same time, when the size or design requirements of the display screen change, it is necessary to readjust the arrangement of the reinforcing ribs and re-open the mold, which greatly increases the cost and reduces the design space. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] The purpose of the present invention is to overcome the inconvenience of fixing the backlight panel by connecting the reinforcing ribs to the frame in the prior art, and to provide a display screen. The present invention fixes the backlight panel by pressing the backlight panel to the fixed frame with a pressing member, and does not need to consider the arrangement of the reinforcing ribs, which is more convenient.

[0007] Another object of the present invention is to provide a smart blackboard, the design of the display screen of which is not affected by the arrangement of the reinforcing ribs, thereby effectively saving costs.

[0008] 2. Technical solution

[0009] In order to achieve the above object, the technical solution provided by the present invention is:

[0010] A display screen of the present invention comprises a frame, and a display panel and a backlight panel embedded in the frame, wherein an integrated fixing frame is provided in the frame, and the fixing frame is located between the display panel and the backlight panel; a pressing member is connected to the frame, and the pressing member is used to press the backlight panel onto the fixing frame.

[0011] Furthermore, the fixing frame is formed by a plurality of fixing parts being fixedly connected by laser welding.

[0012] Furthermore, a reflector is arranged between the fixing frame and the display panel; the fixing member includes a pressing surface and a supporting surface, the pressing member presses the edge of the backlight panel onto the supporting surface, and the pressing surface has a tendency to press the reflector onto the display panel.

[0013] Furthermore, the pressing surface is an inclined surface arranged toward the display panel.

[0014] Furthermore, a convex edge is provided on a side of the reflector facing away from the backlight plate, a side surface of the fixing member opposite to the supporting surface is a press-fit surface, and the convex edge is pressed tightly between the press-fit surface and the display panel.

[0015] Furthermore, a press-fitting part is arranged in the frame, and the press-fitting part has a clamping part and a pressing part. The pressing surface of the fixing part is provided with a clamping groove and a pressing convex strip, the pressing convex strip is pressed tightly on the clamping part, and the press-fitting part is clamped in the clamping groove.

[0016] Furthermore, at least one light bar is arranged on the side of the backlight plate facing the display panel, and at least one reinforcing rib is arranged on the side of the backlight plate facing away from the display panel, and the light bar and the reinforcing rib are arranged perpendicular to each other.

[0017] 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,

[0018] 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,

[0019] The lower frame is provided with a first embedding groove, the first pressing frame has a first embedding portion and a surrounding groove, the surrounding groove surrounds the mounting groove of the lower frame, and the first embedding portion is embedded in the first embedding groove; and / or,

[0020] The upper frame is provided with a second embedding groove, and the second pressing frame has a second embedding portion, and the second embedding portion is embedded in the second embedding groove.

[0021] Furthermore, the third pressing frame includes a pressing plate and a connecting plate which are vertically arranged 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 panel onto the fixing frame.

[0022] A smart blackboard comprises the above-mentioned display screen, wherein at least one of the left and right sides of the display screen is connected to a writing board. 3. Beneficial Effects

[0023] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0024] (1) The display screen of the present invention comprises a frame and a display panel and a backlight panel embedded in the frame. An integrated fixing frame is provided in the frame, and the fixing frame is located between the display panel and the backlight panel. A pressing member is connected to the frame, and the pressing member is used to press the backlight panel onto the fixing frame, thereby completing the fixation of the backlight panel. Therefore, the display screen of the present invention does not need to consider the influence of the arrangement of the reinforcing ribs on the backlight panel on the fixing strength of the backlight panel, so that when the size or design requirements of the display screen change, it is only necessary to adjust the structure of the frame, which effectively reduces the cost and improves the convenience of fixing the backlight panel.

[0025] (2) In the present invention, a reflector is arranged 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 panel against the supporting surface; the pressing surface is an inclined surface arranged toward the display panel, and the pressing surface has a tendency to press the reflector against the display panel, and a convex edge is arranged on the side of the reflector facing away from the backlight panel, and the side of the fixing member opposite to the supporting surface is a pressing surface, so that the fixing frame can press the reflector against the display panel by pressing the convex edge to prevent light leakage from the light bar, and at the same time, the reflector can cooperate with the frame to press the display panel to achieve fixation of the display panel.

[0026] (3) In the smart blackboard of the present invention, the backlight panel of the display screen is fixed on the fixed frame by a pressing member, so the design of the display screen is not affected by the arrangement of the reinforcing ribs, which can effectively save costs. In addition, the overall structure of the display screen is more stable, and the display panel is not prone to dislocation and sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the arrangement of reinforcement ribs in common display screens;

[0028] Figure 2 This is a schematic diagram of the connection method of the backlight panel in a common display screen;

[0029] Figure 3 It is a schematic diagram of the structure of the display screen of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the reinforcing ribs on the backlight panel of the present invention;

[0031] Figure 5 It is a schematic diagram of the matching relationship between the pressing frame, the backlight panel and the fixing frame in the present invention;

[0032] Figure 6 A schematic diagram of the connection between the upper frame, the lower frame and the backlight panel in the present invention;

[0033] Figure 7 It is a schematic diagram of the matching relationship between the first pressing frame and the upper frame and the second pressing frame and the lower frame in the present invention;

[0034] Figure 8 A schematic diagram of the connection between the side frame and the backlight panel in the present invention;

[0035] Fig. 9 It is a schematic diagram of the matching relationship between the third pressing frame and the side frame in the present invention.

[0036] Fig.10 It is a structural schematic diagram of the smart blackboard of the present invention.

[0037] Explanation of the symbols in the schematic diagram:

[0038] 100, display screen; 101, writing glass; 102, touch panel; 103, display panel; 104, first press-fitting member; 1041, first clamping portion; 1042, first press-fitting portion; 105, second press-fitting member; 1051, second clamping portion; 1052, second press-fitting portion; 106, third press-fitting member; 1061, third clamping portion; 1062, third press-fitting portion;

[0039] 110, lower frame; 111, first connecting portion; 112, first supporting portion; 113, first embedding groove;

[0040] 120, upper frame; 121, second connecting portion; 122, second supporting portion; 123, second embedding groove;

[0041] 130. side frame; 131. third supporting portion; 132. third connecting portion;

[0042] 140, first pressing frame; 141, first pressing strip; 142, limiting strip; 143, first embedding portion; 144, surrounding groove;

[0043] 150, second pressing frame; 151, second pressing strip; 152, second embedding portion;

[0044] 160, third pressing frame; 161, pressing plate; 162, connecting plate;

[0045] 170, reflector; 171, lamp hole;

[0046] 180, fixing frame; 181, first fixing member; 1811, first clamping groove; 1812, first press-fitting convex strip; 1813, first pressing surface; 1814, first supporting surface; 182, second fixing member; 1821, second clamping groove; 1822, second press-fitting convex strip; 1823, second pressing surface; 1824, second supporting surface; 183, third fixing member; 1831, third clamping groove; 1832, third press-fitting convex strip; 1833, third pressing surface; 1834, third supporting surface; 1835, supporting groove;

[0047] 190, backlight panel; 191, reinforcing ribs; 192, light bar;

[0048] 200. Writing board. DETAILED DESCRIPTION

[0049] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0050] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0051] Figure 1 The figure shows the arrangement of the reinforcing ribs 191 on the back of the display screen 100 in a common smart blackboard. In order to stably fix the backlight panel 190 on the frame, the reinforcing ribs 191 are usually arranged in a horizontal and vertical connection, that is, the reinforcing ribs 191 are simultaneously connected to the upper frame 120 and the side frame 130 and / or simultaneously connected to the lower frame 110 and the side frame 130, so that the backlight panel 190 can be connected to the upper frame 120, the side frame 130, and the lower frame 110 at the same time.

[0052] As an example, Figure 2The figure shows the connection method of the backlight panel 190 and the lower frame 110 of the display screen 100 in a common smart blackboard. Specifically, the reinforcing rib 191 is fixedly arranged on the backlight panel 190, for example, by a welding fixing method, or a bolting fixing method. The reinforcing rib 191 has a connecting end protruding from the edge of the backlight panel 190, and the backlight panel 190 is fixed to the lower frame 110 by connecting the connecting end to the lower frame 110, generally by bolting. Similarly, the backlight panel 190 is of course provided with a reinforcing rib 191 that can be connected to the upper frame 120 and / or the side frame 130. At this time, the fixing of the backlight panel 190 and the frame of the display screen 100 can be completed by connecting the reinforcing rib 191 with the upper frame 120, the side frame 130, and the lower frame 110.

[0053] However, the educational equipment industry is developing rapidly and the product iteration cycle is 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, and the arrangement, size and connection hole position of the reinforcing ribs 191 need to be redesigned and re-molded, which greatly increases the production cost and reduces the design space of the display screen 100.

[0054] To solve the above problems, refer to Figure 3 This embodiment provides a display screen, in which the display screen 100 presses the backlight plate 190 onto the fixing frame by means of a pressing member, thereby fixing the backlight plate 190 onto the frame of the display screen 100. Figure 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, so it can be arranged in a simpler way. In addition, when the size of the display screen 100 and / or the structure of the frame changes, the display screen of this embodiment only needs to adjust the structure and size of the pressing member, which reduces the cost.

[0055] Specifically, refer to Figure 4 The display screen 100 of this embodiment includes a frame, a display panel 103, a fixing frame 180, a backlight panel 190 and a pressing member. The display panel 103 and the backlight panel 190 are embedded in the frame; the fixing frame 180 is an integrated structure, which is arranged in the frame and located between the display panel 103 and the backlight panel 190; the pressing member is connected to the frame and presses the backlight panel 190 onto the fixing frame 180, thereby completing the fixing of the backlight panel 190.

[0056] Among them, the specific structure of the display panel 103 is not limited, and it can be a liquid crystal display panel, or it can adopt a liquid crystal display panel commonly used in the relevant field, such as but not limited to the display panels disclosed in Chinese patent documents with application numbers 2019110888750 and 2019110815529.

[0057] The fixing frame 180 may be formed by a plurality of fixing parts connected and fixed by laser welding, and the fixing parts may be profiles formed by a cold stamping process.

[0058] At least one light bar 192 is provided on the side of the backlight panel 190 facing the display panel 103, and at least one reinforcing rib 191 is provided on the side of the backlight panel 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 in the horizontal direction, and the lamp beads on the light bars 192 can be arranged equidistantly in the vertical direction, and the positions of the lamp beads on different light bars 192 correspond. When there are multiple reinforcing ribs 191, the multiple reinforcing ribs 191 can be arranged in parallel in the vertical direction. The light bars 192 and the reinforcing ribs 191 can be arranged perpendicular to each other, so that the multiple reinforcing ribs 191 and the multiple light bars 192 form a grid that intersects horizontally and vertically, and the multiple reinforcing ribs 191, the multiple light bars 192 and the backlight panel 190 are directly connected into an integral structure by setting connecting bolts at the intersection of the grid.

[0059] Specifically, a plurality of light strips 192 are provided on the first side surface of the backlight panel 190, and a plurality of reinforcing ribs 191 are provided in parallel on the second side surface of the backlight panel. The projection of the light strip 192 on the second side surface intersects with at least two of the plurality of reinforcing ribs 191, and a fixing bolt is provided at the intersection, which can connect the light strip 192, the backlight panel 190 and the reinforcing rib 191.

[0060] 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 panel 190 to prevent the light bar 192 from falling off, making the overall structure of the backlight panel 190 more stable.

[0061] The reinforcing ribs 191 are arranged on the second side along the first direction, and the reinforcing ribs 191 are arranged along the second direction. The reinforcing ribs 191 can be arranged at equal distances or at variable distances, which can be adjusted according to the size of the backlight panel 190 without limitation.

[0062] The length of the reinforcing rib 191 in the first direction is smaller than the length of the backlight panel 190 in the first direction, so that the edge of the backlight panel 190 can protrude from the end of the reinforcing rib 191, so that the protruding edge of the backlight panel 190 can be connected to the frame of the display screen 100, thereby fixing the backlight panel 190.

[0063] The middle part of the reinforcing rib 191 in the second direction may be concave and form a fixing groove, and a fixing hole for the fixing bolt to pass through is provided on the fixing groove; connection holes are provided at positions corresponding to the fixing holes on the light bar 192 and the backlight plate 190. When connecting, the stud of the fixing bolt can be passed through the fixing hole and the connection hole on the backlight plate 190 in sequence and connected to the connection hole on the light bar 192, or passed through the connection hole on the light bar 192 and connected to the fixing nut.

[0064] The nut size of the fixing bolt can be smaller than the size of the fixing groove. Therefore, when the light bar 192, the backlight panel 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 reinforcing rib 191, thereby making the structure of the backlight panel 190 more compact and improving the overall appearance of the backlight panel 190.

[0065] In addition, both side edges of the reinforcing rib 191 can be folded inward toward the backlight panel 190 to form a supporting edge, and a gap is formed between the two supporting edges to avoid the stud of the fixing bolt, so that the stud of the fixing bolt can pass through the gap and connect with the connecting hole on the backlight panel 190.

[0066] The light bar 192 and the reinforcement rib 191 can be arranged perpendicular to each other, so that the projections of the light bar 192 and the reinforcement rib 191 on the second side form a grid-like pattern, and a fixing bolt can be set at each intersection of the grid-like pattern to further improve the stability of the connection between the light bar 192 and the reinforcement rib 191.

[0067] 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 is provided in the length direction of the light bar 192 and may not be able to supply light 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 in parallel 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.

[0068] 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 uniformity of light received by the display panel 103 .

[0069] In addition, refer to Figure 4A reflector 170 may be provided between the fixing 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 the lamp beads to extend into the reflector 170. The number of the lamp holes 171 is the same as the number of the lamp beads, and the positions of the lamp holes 171 correspond to the positions of the lamp beads.

[0070] In order to fix the reflector 170, in this embodiment, the fixing member may include a pressing surface and a supporting surface, and the pressing member presses the edge of the backlight panel 190 against the supporting surface, so that the pressing surface of the fixing member has a tendency to press the reflector 170 against the display panel 103. The pressing surface may be an inclined surface arranged 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.

[0071] A convex edge may be provided on the side of the reflector 170 facing away from the backlight plate 190 , and the side of the fixing member opposite to the supporting surface is a pressing surface, and the convex edge may be pressed between the pressing surface and the display panel 103 , thereby further improving the fixing effect of the fixing member on the reflector 170 .

[0072] In order to improve the fixing effect of the display panel 103, a press-fitting part can be arranged in the frame. The press-fitting part has a clamping part and a pressing part. The pressing surface of the fixing part is provided with a clamping groove and a pressing convex strip. The pressing convex strip is pressed tightly on the clamping part, and the press-fitting part is clamped in the clamping groove.

[0073] 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 be a capacitive touch panel, and its specific structure is not limited, and it may also be a touch panel commonly used in the relevant field. A writing glass 101 may be provided outside the touch panel 102 to realize the writing function of the display screen 100.

[0074] As an example, Figures 6 to 9The figure shows the connection mode between the backlight plate 190 and each frame in the display screen 100 of the present embodiment. Specifically, the frame of the display screen 100 includes a lower frame 110 and an upper frame 120, and 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, a second pressing frame 150 connected to the upper frame 120, and a third pressing frame 160 connected to the side frame 130; the fixing frame 180 includes a first fixing member 181 connected to the lower frame 110, a second fixing member 182 connected to the upper frame 120, and a 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, a second pressing member 105 is provided at a position corresponding to the second fixing member 182, and a third pressing member 106 is provided at a position corresponding to the third fixing member 183.

[0075] More specifically, see Figure 6 and Figure 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 a first embedding groove 113 is formed between the mounting groove and the lower frame body at the position of the first connecting portion 111. A limiting groove is provided on the side of the lower frame body facing away from the display panel 103. The mounting groove can be used to install a key module, a speaker, or an interface module.

[0076] The first pressing frame 140 has a first pressing strip 141, a limiting strip 142, a first embedding portion 143 and a surrounding groove 144. The first pressing strip 141 is arranged along the edge of the backlight plate 190, the limiting strip 142 is located at a position corresponding to the limiting groove and can be inserted into the limiting groove, the first embedding portion 143 is arranged toward the first embedding groove 113 and can be embedded in the first embedding groove 113, and the surrounding groove 144 is located at a position corresponding to the installation groove and can be arranged to surround the installation groove.

[0077] The first fixing member 181 has a first clamping groove 1811, a first press-fitting convex strip 1812, a first pressing surface 1813, a first supporting surface 1814 and a first press-fitting surface. The first pressing surface 1813 can be pressed against the side surface of the reflector 170, the first press-fitting surface is arranged toward the display panel 103, and the first supporting surface 1814 is arranged opposite to the first press-fitting surface and is arranged away from the display panel 103; the first press-fitting convex strip 1812 is arranged on the first press-fitting surface, and the free end of the first press-fitting convex strip 1812 is arranged toward the display panel 103; the first clamping groove 1811 is opened on the first press-fitting surface, and the cross section of the first clamping groove 1811 is substantially L-shaped, and the first press-fitting convex strip 1812 can serve as one of the groove walls of the first clamping groove 1811.

[0078] The first pressing part 104 has a first clamping part 1041 and a first pressing part 1042. The first clamping part 1041 is arranged toward the first clamping groove 1811 and can be clamped in the first clamping groove 1811; the first pressing part 1042 is used to support the first pressing convex strip 1812, that is, the first pressing convex strip 1812 can be pressed against the first pressing 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 interference between the touch panel 102 and the display panel 103; another additional function of the second function is to press the edge of the touch panel 102 against the lower frame 110.

[0079] When assembling the display screen 100, first place 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 support the edge of the display panel 103 on the upper side of the first pressing part 1042, and place the reflector 170 on the display panel 103; then place the first fixing member 181 into the frame, so that the first clamping part 1041 is clamped into the first clamping groove 1811, and the first pressing convex strip 1812 is supported on the upper side of the first pressing part 1042, and the first fixing member 181 is connected to the lower frame 110 with connecting bolts; finally, place the backlight panel 190 on the first supporting surface 1814, and connect the first clamping frame 140 to the lower frame 110, so that the first clamping strip 141 clamps the backlight panel 190.

[0080] Reference Figure 6 and Figure 7 The upper frame 120 includes a second supporting portion 122 and a second connecting portion 121. The second connecting portion 121 has a second embedding groove 123 on the side facing away from 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.

[0081] The second pressing frame 150 has a second pressing strip 151 and a second embedding portion 152 . The second pressing strip 151 is disposed along the edge of the backlight plate 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 .

[0082] The second fixing member 182 has a second clamping groove 1821, a second press-fitting convex strip 1822, a second pressing surface 1823, a second supporting surface 1824 and a second pressing surface. The second pressing surface 1823 can be pressed against the side surface of the reflector 170, the second press-fitting surface is arranged toward the display panel 103, and the second supporting surface 1824 is arranged opposite to the second press-fitting surface and is arranged 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 arranged toward the display panel 103; the second clamping groove 1821 is provided on the second press-fitting surface, and the cross section of the second clamping groove 1821 is substantially L-shaped, and the second press-fitting convex strip 1822 can serve as one of the groove walls of the second clamping groove 1821.

[0083] The second press-fitting member 105 has a second clamping portion 1051 and a second press-fitting portion 1052. The second clamping portion 1051 is disposed toward the second clamping slot 1821 and can be clamped in the second clamping slot 1821; the second press-fitting portion 1052 is used to support the second press-fitting convex strip 1822, that is, the second press-fitting convex strip 1822 can be pressed tightly on the second press-fitting portion 1052.

[0084] Reference Figure 8 and Fig. 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 .

[0085] The third pressing frame 160 includes a pressing plate 161 and a connecting plate 162 . The connecting plate 162 is connected to the third connecting portion 132 , and the pressing plate 161 is disposed perpendicular to the connecting plate 162 .

[0086] The third fixing member 183 includes a third clamping groove 1831, a third press-fitting convex strip 1832, a third pressing surface 1833, a third supporting surface 1834, a supporting groove 1835 and a third press-fitting surface. The third pressing surface 1833 can be pressed against the side surface of the reflector 170, the third press-fitting surface is arranged toward the display panel 103, and the third supporting surface 1834 is arranged opposite to the third press-fitting surface and is arranged away from the display panel 103; the third press-fitting convex strip 1832 is arranged on the third press-fitting surface, and the free end of the third press-fitting convex strip 1832 is arranged toward the display panel 103; the third clamping groove 1831 is provided on the third press-fitting surface, and the cross section of the third clamping groove 1831 is substantially L-shaped, and the third press-fitting convex strip 1832 can serve as one of the groove walls of the third clamping groove 1831. The connecting plate 162 has a bending portion. When the third fixing member 183 is connected to the side frame 130 , the bending portion can be supported in the supporting groove 1835 , so that the free end of the connecting plate 162 facing the side of the side frame 130 can press the edge of the backlight panel 190 .

[0087] The third press-fitting member 106 has a third clamping portion 1061 and a third press-fitting portion 1062. The third clamping portion 1061 is disposed toward the third clamping slot 1831 and can be clamped in the third clamping slot 1831; the third press-fitting portion 1062 is used to support the third press-fitting convex strip 1832, that is, the third press-fitting convex strip 1832 can be pressed tightly on the third press-fitting portion 1062.

[0088] During the assembly process of the display screen 100 of this embodiment, the coordination relationship between the clamping parts, fixing parts, pressing parts, backlight panel, display panel, touch panel, writing glass and the frame is only taken as an example at the lower frame 110, and the coordination relationship at the upper frame 120 and the side frame 130 can refer to the coordination relationship at the lower frame 110, and the relevant content will not be repeated in this embodiment.

[0089] It should be noted that the first fixing member 181 , the second fixing member 182 and the two third fixing members 183 may be connected by laser welding before assembly, or may be laser welded after being connected to the frame respectively.

[0090] In addition, the present embodiment further provides a smart blackboard, which is composed of a display screen 100 and at least one writing board 200. For example, the smart blackboard can be composed of a display screen 100 and a writing board 200, or a display screen 100 and writing boards 200 located on both sides of the display screen 100.

[0091] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A display screen, comprising a frame, and a display panel (103) and a backlight panel (190) embedded in the frame, characterized in that: An integrated fixing frame (180) is provided in the frame, and the fixing frame (180) is located between the display panel (103) and the backlight panel (190); a pressing member is connected to the frame, and the pressing member is used to press the backlight panel (190) onto the fixing frame (180); and at least one light bar (192) is provided on the side of the backlight panel (190) facing the display panel (103); The frame comprises a lower frame (110) and an upper frame (120), and two side frames (130) are connected between the lower frame (110) and the upper frame (120); and, The pressing member comprises a first pressing frame (140) connected to the lower frame (110), a second pressing frame (150) connected to the upper frame (120), and a third pressing frame (160) connected to the side frame (130); and, The lower frame (110) is provided with a first embedding groove (113), the first pressing frame (140) has a first embedding portion (143) and a surrounding groove (144), the surrounding groove (144) surrounds the installation groove of the lower frame (110), 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), and the second pressing frame (150) has a second embedding portion (152), and the second embedding portion (152) is embedded in the second embedding groove (123).

2. A display screen according to claim 1, characterized in that: The fixing frame (180) is formed by a plurality of fixing parts being fixedly connected by laser welding.

3. A display screen according to claim 2, characterized in that: A reflector (170) is arranged between the fixing frame (180) and the display panel (103); the fixing member comprises a pressing surface and a supporting surface, the pressing member presses the edge of the backlight panel (190) onto the supporting surface, and the pressing surface has a tendency to press the reflector (170) onto the display panel (103).

4. A display screen according to claim 3, characterized in that: The pressing surface is an inclined surface arranged toward the display panel (103).

5. A display screen according to claim 3 or 4, characterized in that: The reflector (170) is provided with a convex edge on a side facing away from the backlight plate (190); the side surface of the fixing member opposite to the supporting surface is a pressing surface; and the convex edge is pressed tightly between the pressing surface and the display panel (103).

6. A display screen according to claim 5, characterized in that: A press-fitting piece is arranged in the frame, and the press-fitting piece has a clamping part and a pressing part. A clamping groove and a press-fitting convex strip are arranged on the pressing surface of the fixing piece. The press-fitting convex strip is pressed tightly on the clamping part, and the press-fitting part is clamped in the clamping groove.

7. A display screen according to claim 1, characterized in that: At least one reinforcing rib (191) is provided on the side of the backlight plate (190) facing away from the display panel (103), and the light bar (192) and the reinforcing rib (191) are arranged perpendicular to each other.

8. A display screen according to claim 7, characterized in that: The third pressing frame (160) comprises a pressing plate (161) and a connecting plate (162) which are arranged perpendicular to each other, the connecting plate (162) being connected to the side frame (130), and the pressing plate (161) being used to press the edge of the backlight panel (190) onto the fixed frame (180).

9. A smart blackboard, characterized in that: The invention comprises a display screen (100) as claimed in any one of claims 1 to 8, wherein a writing board (200) is connected to at least one of the left and right sides of the display screen (100).

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