Optical touch frame and display device

Abstract

The utility model discloses an optical touch frame and a display device, the optical touch frame comprises a first frame part, the first frame part is internally provided with an accommodating space, the first frame part is provided with an end face and a first side face connected with the end face, and the end face of the first frame part is provided with a first port communicated with the accommodating space; the first end of the first connecting corner is spliced with the end part of the first frame part, the first connecting corner is provided with a splicing surface opposite to the end surface of the first frame part, and a splicing gap is formed between the splicing surface and the end surface of the first frame part; the area, opposite to the first port, of the splicing face is provided with a water collecting groove, the water collecting groove extends into the containing space, and a groove opening of the water collecting groove faces the first side face of the first frame part and is opposite to the splicing gap. The optical touch frame can prevent water drops from entering the accommodating space of the first frame part, so that the problem that the water drops corrode a touch circuit board in the first frame part is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, and in particular to an optical touch frame and a display device. Background Art

[0002] As a multifunctional, interactive multimedia device, infrared touchscreen displays can effectively improve group communication efficiency and facilitate use and writing, making them widely used in education and conferencing. Conventional infrared touchscreen solutions require a hollow frame structure with the touchscreen circuit board housed within. The frame is connected by corners to form a circular shape. Because these solutions are spliced, there are assembly gaps at corners and filter strip seams, resulting in limited waterproofing.

[0003] In humid environments, such as during the return of the south wind and the plum rain season in southern China, moisture can easily seep into the frame, corroding the touch circuit board and causing poor touch control, impacting product performance. Furthermore, to maintain machine cleanliness, if end users wipe the machine with a damp cloth, water can easily seep through the gaps in the frame. In this case, water droplets can enter the frame cavity through the gaps and damage the touch circuit board, resulting in poor touch control. Utility Model Content

[0004] The utility model provides an optical touch frame and a display device. The optical touch frame can prevent water droplets from entering the accommodating space of the first frame portion, thereby solving the problem of water droplets corroding the touch circuit board in the first frame portion.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] An optical touch frame, comprising:

[0007] a first frame portion, wherein the first frame portion has an accommodation space therein, the first frame portion has an end surface and a first side surface connected to the end surface, and the end surface of the first frame portion has a first port communicating with the accommodation space;

[0008] a first connecting corner, wherein a first end of the first connecting corner is spliced ​​with an end portion of the first frame portion, the first connecting corner has a splicing surface opposite to an end surface of the first frame portion, and a splicing gap is formed between the splicing surface and the end surface of the first frame portion;

[0009] A water collecting groove is provided in an area of ​​the splicing surface opposite to the first port. The water collecting groove extends into the accommodating space. The notch of the water collecting groove faces the first side surface and is opposite to the splicing gap.

[0010] Optionally, the bottom of the water collecting tank has a water inlet;

[0011] The first connecting corner further includes a guide structure, which is communicated with the water inlet and is used to guide water out of the water collecting tank.

[0012] Optionally, the first connecting corner includes a first inner corner and a first outer corner;

[0013] The first end of the first inner corner is fixedly connected to the first frame portion;

[0014] The first outer corner is located outside the first inner corner, and the first end of the first outer corner has the splicing surface.

[0015] Optionally, the diversion structure is located on a side of the first inner corner facing the bottom of the water collecting tank;

[0016] The guide structure is used to guide water in the water collecting tank to a first side of the first inner corner along a first direction, where the first direction is a thickness direction of the first connecting corner.

[0017] Optionally, the diversion structure includes a first water guide groove and a diversion channel;

[0018] The first water guide trough is opposite to the water inlet of the water collecting trough, and the water inlet extends into the first water guide trough;

[0019] A first end of the drainage channel is connected to the first water guide groove, and a second end of the drainage channel extends to a first side of the first inner corner along a first direction.

[0020] Optionally, the guide structure includes a second water guide groove, and the second water guide groove is located on one side of the first connecting corner along a first direction, and the first direction is a thickness direction of the first connecting corner;

[0021] The water collecting trough is connected with the second water guiding trough through the water inlet.

[0022] Optionally, the first frame portion has a first side surface and a second side surface that are oppositely disposed;

[0023] The second end of the first connecting corner is bent from the first end of the first connecting corner toward a second direction, and the second direction is a direction from the first side surface to the second side surface.

[0024] Optionally, the accommodating space includes a functional cavity and a circuit board cavity;

[0025] The functional cavity is in communication with the first port;

[0026] The circuit board cavity is located on a side of the functional cavity away from the first side surface, and the circuit board cavity is used to accommodate a touch circuit board;

[0027] An end surface of the first frame portion has a second port communicating with the circuit board cavity, and the second port is located on a side of the first port away from the first side surface.

[0028] Optionally, the first frame portion includes a first sub-frame and a second sub-frame stacked together;

[0029] The first sub-frame has the functional cavity and the first port;

[0030] The second sub-frame has the circuit board cavity and the second port.

[0031] Optionally, it further includes a second frame portion;

[0032] The first end of the second frame portion is spliced ​​with the second end of the first connecting corner, the second frame portion has a circuit board cavity for accommodating a touch circuit board, and the end surface of the second frame portion has a third port connected to the circuit board cavity.

[0033] Optionally, a corner sealing plug is also included;

[0034] The corner sealing plug is located on the inner side of the first connecting corner, the first end of the corner sealing plug is against the end face of the first frame part and opposite to the second port, and the second end of the corner sealing plug is against the end face of the second frame part and opposite to the third port.

[0035] Optionally, two touch circuit boards and connecting wires are also included;

[0036] The two touch circuit boards are respectively located in the circuit board cavity of the first frame portion and the circuit board cavity of the second frame portion, and ends of the two touch circuit boards are connected by the connecting wire;

[0037] The corner sealing plug has a communication cavity, and the communication cavity is communicated with the circuit board cavity;

[0038] The connecting line is routed through the communicating cavity of the corner sealing plug.

[0039] Optionally, the Shore hardness of the corner sealing plug is between 40 degrees and 80 degrees.

[0040] Optionally, a guide structure is provided in an area of ​​the end portion of the corner sealing plug opposite to the port communicating with the circuit board cavity, and the guide structure can be inserted into the circuit board cavity.

[0041] Optionally, a region where the end of the corner sealing plug is opposite to the port communicating with the circuit board cavity has a limiting structure, and the end of the touch circuit board extends out of the circuit board cavity and abuts against the limiting structure.

[0042] The utility model also provides a display device, comprising any one of the optical touch frame provided by the above technical solution.

[0043] The utility model provides an optical touch frame and a display device, in which the first frame portion has a accommodating space, in which a touch circuit board can be placed, the end portion of the first frame portion is spliced ​​with the first end of the first connecting corner, and a splicing gap is provided between the end face of the first frame portion and the splicing surface of the first connecting corner; since the area where the splicing surface of the first connecting corner is opposite to the first port of the first frame portion has a water collecting groove, the water collecting groove can extend into the accommodating space, the groove of the water collecting groove faces the first side face of the first frame portion, and the groove of the water collecting groove is opposite to the splicing gap; when external water enters the first frame portion along the splicing gap from the side where the first side face of the first frame portion is located, the water droplets can be blocked by the water collecting groove and accumulated in the water collecting groove, thereby preventing the water droplets from entering the accommodating space, thereby solving the problem of water droplets corroding the touch circuit board located in the accommodating space and achieving a good waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of the structure of an optical touch frame provided in the related art;

[0045] Figure 2 for Figure 1 Enlarged view of middle area A;

[0046] Figure 3 A schematic structural diagram of an optical touch frame provided by an embodiment of the present utility model;

[0047] Figure 4 Figure 3 Enlarged view of middle area B;

[0048] Figure 5 An exploded view of an optical touch frame provided by an embodiment of the present utility model;

[0049] Figure 6 An exploded view of a first connecting corner provided by an embodiment of the present utility model;

[0050] Figure 7 This is a schematic diagram of an assembly of a first connecting corner provided by an embodiment of the present utility model;

[0051] Figure 8 A schematic structural diagram of a first outer corner provided by an embodiment of the present utility model;

[0052] Figure 9 A schematic structural diagram of a first inner corner provided by an embodiment of the present utility model;

[0053] Figure 10 A cross-sectional view of a first connecting corner provided by an embodiment of the present utility model;

[0054] Figure 11 A schematic structural diagram of an optical touch frame provided by an embodiment of the present utility model;

[0055] Figure 12 An exploded view of another first connecting corner provided by an embodiment of the present utility model;

[0056] Figure 13 A schematic structural diagram of another first outer corner provided by an embodiment of the present utility model;

[0057] Figure 14 A schematic structural diagram of another first outer corner provided by an embodiment of the present utility model;

[0058] Figure 15 An exploded view of an optical touch frame provided by an embodiment of the present utility model;

[0059] Figure 16 A schematic diagram of the assembly of a corner sealing plug provided by an embodiment of the present utility model;

[0060] Figure 17 A schematic structural diagram of a corner sealing plug and a connecting line provided in an embodiment of the present utility model;

[0061] Figure 18 A schematic structural diagram of a corner sealing plug and a first frame portion provided in an embodiment of the present utility model.

[0062] icon:

[0063] 01-frame; 011-top frame; 012-ground frame; 013-first side frame; 014-second side frame; 02-touch circuit board; 03-connection corner;

[0064] 1-frame portion; 11-first frame portion; 12-second frame portion; 13-third frame portion; 2-touch circuit board; 3'-connecting corner; 3-first connecting corner; 31-first inner corner; 32-first outer corner; 301-water collecting trough; 3011-water inlet; 302-flow guide structure; 3021-first water guide trough; 3022-flow guide channel; 303-second water guide trough; 4-connecting line; 5-corner sealing plug; 51-guide structure; 52-limiting structure; E-circuit board cavity; F-functional cavity. DETAILED DESCRIPTION

[0065] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0066] In the related art, the structure of the infrared touch display screen can be as shown in Figure 1 and Figure 2 ; Figure 1 The optical touch frame of the mid-infrared touch display screen includes four frame parts 01 that are spliced, and a touch circuit board 02 is arranged in the inner cavity of each frame part 01, the four touch circuit boards 02 are electrically connected in sequence, the corner part of the optical touch frame is spliced with the two adjacent frame parts 01 through a connecting corner 03, and a splicing gap is formed between the end part of the connecting corner 03 and the end part of the adjacent frame 01, which cannot be completely sealed.

[0067] The four frame parts 01 of the optical touch frame of the infrared touch display screen include a top side frame part 011, a ground side frame part 012, a first side frame part 013 and a second side frame part 014. The top side frame part 011 and the ground side frame part 012 are arranged opposite to each other, and the first side frame part 013 and the second side frame part 014 are arranged opposite to each other. The top side frame part 011 specifically refers to the frame part located at the top end of the infrared touch display screen in a normal use state of the infrared touch display screen, the ground side frame part 012 specifically refers to the frame part located at the bottom end of the infrared touch display screen in the normal use state of the infrared touch display screen, and the first side frame part 013 and the second side frame part 014 respectively refer to the frame parts located at the left side and the right side of the display screen in the normal use state of the infrared touch display screen.

[0068] When the use environment is humid or a wet cloth with water is used to wipe the display screen, external water droplets are likely to enter the inner cavity of the frame part through the splicing gap between the frame part 01 and the connecting corner 03, which can corrode the touch circuit board 02 and cause poor touch, thereby affecting the performance of the infrared touch display screen product.

[0069] For example, as shown in Figure 2 , the path of the external water droplets d entering the inner cavity of the top side frame 011 is from the splicing gap between the top side frame 011 and the connecting corner 03, and under the action of gravity, the water droplets d are likely to enter the inner cavity of the top side frame 011 at the port of the inner cavity of the top side frame 011, and then corrode the touch circuit board 02 in the top side frame 011, thereby affecting the performance of the infrared touch display screen product.

[0070] In order to solve the above technical problems, the utility model provides an optical touch frame, as shown in Figures 3 to 5Shown, including:

[0071] A first frame portion 11, wherein the first frame portion 11 has an accommodating space therein, the first frame portion 11 has an end surface and a first side surface connected to the end surface, and the end surface of the first frame portion 11 has a first port communicating with the accommodating space;

[0072] A first connecting corner 3, wherein a first end of the first connecting corner 3 is spliced ​​with an end of the first frame portion 11, and the first connecting corner 3 has a splicing surface opposite to the end surface of the first frame portion 11, with a splicing gap between the splicing surface and the end surface of the first frame portion 11;

[0073] The area of ​​the splicing surface opposite to the first port has a water collecting groove 301, which extends into the accommodating space. The notch of the water collecting groove 301 faces the first side surface and is opposite to the splicing gap.

[0074] In the optical touch frame provided by the embodiment of the present invention, the first frame portion 11 has a accommodating space, and the touch circuit board 2 can be placed in the accommodating space, and the end of the first frame portion 11 is spliced ​​with the first end of the first connecting corner 3, and a splicing gap is provided between the end face of the first frame portion 11 and the splicing surface of the first connecting corner 3; since the area where the splicing surface of the first connecting corner 3 is opposite to the first port of the first frame portion 11 has a water collection groove 301, the water collection groove 301 can extend into the accommodating space, and the notch of the water collection groove 301 faces the first side surface of the first frame portion 11, and the notch of the water collection groove 301 is opposite to the splicing gap; when external water enters the first frame portion 11 along the splicing gap from the side where the first side surface of the first frame portion 11 is located, the water droplets can be blocked by the water collection groove 301 and accumulated in the water collection groove 301, thereby preventing water droplets from entering the accommodating space, thereby solving the problem of water droplets corroding the touch circuit board 2 located in the accommodating space and achieving a good waterproof effect.

[0075] The optical touch frame provided by the utility model can be applied to display devices such as infrared touch screens, conference machines, interactive tablets, and electronic whiteboards.

[0076] In an embodiment of the present invention, the optical touch bezel may specifically include four bezel portions 1 and four connecting corners 3'. The four bezel portions 1 are spliced ​​together end-to-end through the four connecting corners 3' to form a rectangular frame. The four bezel portions include a top-side bezel portion and a bottom-side bezel portion that are oppositely disposed, and a first side bezel portion and a second side bezel portion that are oppositely disposed. Optionally, the number of bezel portions in the optical touch bezel is not limited and may be determined based on actual conditions.

[0077] It should be noted that the top side frame part specifically refers to the frame part 1 located at the top end of the display device in the normal use state of the display device, and the bottom side frame part specifically refers to the frame part 1 located at the bottom end of the display device in the normal use state of the display device. The first side frame part and the second side frame part respectively refer to the frame part 1 located at the left side and the right side of the display device in the normal use state of the display device, and the first side frame part and the second side frame part are specifically located at which side of the display device is not limited here, but is determined according to the actual situation.

[0078] Specifically, as shown in Figure 3 and Figure 4 , the first frame part 11 can be a top side frame part, and the first side surface of the first frame part 11 can be a side surface located at the top of the top side frame part. The first connecting corner 3 can be a connecting corner 3' spliced with the end of the top side frame part.

[0079] In the embodiment of the utility model, the trough bottom of the water collecting groove 301 can have a water inlet 3011 on the first connecting corner 3; the first connecting corner 3 can further include a flow guide structure 302, the flow guide structure 302 is communicated with the water inlet 3011, and the flow guide structure 302 is used to guide the water in the water collecting groove 301 out of the first frame part 11.

[0080] When the water droplets from the outside enter the first frame part 11 through the splicing gap in the above optical touch frame, the water droplets can be blocked by the water collecting groove 301 and accumulated in the water collecting groove 301. The water in the water collecting groove 301 can flow into the flow guide structure 302 through the water inlet 3011 at the bottom of the water collecting groove 301, and then be guided out of the first frame part 11 through the flow guide structure 302, thereby avoiding the problem that the water droplets enter the accommodation space and corrode the touch circuit board 2, and achieving good waterproof effect.

[0081] In the embodiment of the utility model, the bottom surface of the water collecting groove 301 can be inclinedly arranged towards the water inlet 3011, so that the position of the water inlet 3011 is lower, and the water in the water collecting groove 301 can flow to the water inlet 3011 and be guided out by the flow guide structure 302.

[0082] In the embodiment of the utility model, Figure 3 and Figure 4 Each connecting corner 3' can include an inner corner and an outer corner, the two ends of the inner corner can be fixedly connected with the frame part, the outer corner can be arranged on the outer side of the inner corner, the two ends of the outer corner can be spliced with the end of the frame part, and the end of the outer corner and the end of the frame part have a splicing gap. The inner corner can realize the fixed connection between the adjacent frame parts, the outer corner can play a decorative role on the appearance of the optical touch frame, can optimize the aesthetic property, and improve the user experience.

[0083] Specifically, the ends of the inner corner can be fixedly connected to the two adjacent frame portions 1 via screws to achieve a fixed connection between the two adjacent frame portions 1. The middle portion of the outer corner can have a connecting portion, which can be located on a first side of the inner corner along its thickness direction and fixedly connected to the middle portion of the inner corner via screws. The splicing gap between the end of the outer corner and the end of the frame portion 1 can be between 0.2mm and 0.6mm, taking into account the material tolerance and actual assembly tolerance of the optical touch bezel.

[0084] like Figures 4 to 8 As shown, the first connecting corner 3 may include a first inner corner 31 and a first outer corner 32. The first end of the first inner corner 31 may be fixedly connected to the first frame portion 11, and the first outer corner 32 is located outside the first inner corner 31. The first end of the first outer corner 32 may have a splicing surface, that is, the water collection tank 301 in the first connecting corner 3 may be disposed on the first outer corner 32, which has a simple structure and is easy to manufacture.

[0085] The water collection groove 301 on the first outer corner 32 can be tightly matched with the sidewalls of the storage space of the first frame portion 11 along the thickness direction of the first connecting corner 3, thereby preventing water droplets from entering the storage space from both sides of the water collection groove 301. The shape and size of the water collection groove 301 are not limited here and can be determined according to actual conditions.

[0086] For example, Figure 7 As shown, the width of the water collection groove 301 along the thickness direction of the first connecting corner 3 can be L1, and the width of the accommodation space of the first frame portion 11 along the thickness direction of the first connecting corner 3 is a. The value of a minus L1 can be equal to 0 to 0.1 mm, so that the sides of the water collection groove 301 fit tightly with the sidewalls of the accommodation space. The numerical range of a minus L1 can also be other ranges, which are not limited here and can be determined according to actual circumstances.

[0087] Specifically, the first outer corner 32 and the water collection tank 301 can be an integrated structure, which is simple and does not increase material costs. Alternatively, the first outer corner 32 and the water collection tank 301 can be a separate design, and the first outer corner 32 and the water collection tank 301 can be snap-fitted together. The material of the first outer corner 32 and the water collection tank 301 can be the same or different.

[0088] In the embodiment of the present utility model, Figure 5 As shown, on the first connecting corner 3, the guide structure 302 can be located on the side of the first inner corner 31 facing the bottom of the water collecting trough 301; the guide structure 302 can be used to lead the water in the water collecting trough 301 to the first side of the first inner corner 31 along the first direction, and the first direction is the thickness direction of the first connecting corner 3.

[0089] The water flow guide structure 302 on the first inner corner 31 can guide the water accumulated in the water collecting groove 301 to the side of the first inner corner 31 along the first direction, and can guide the water droplets entering from the joint gap between the first frame part 11 and the first connecting corner 3 to the outside of the first frame part 11, thereby avoiding the corrosion of the touch circuit board 2 arranged in the first frame part 11 by the water droplets.

[0090] Specifically, as shown in FIGS. Figure 6 , Figure 7 and Figure 9 , the water flow guide structure 302 can include a first water guide groove 3021 and a drainage channel 3022. The first water guide groove 3021 is opposite to the water inlet 3011 of the water collecting groove 301, and the water inlet 3011 extends into the water guide groove. The first end of the drainage channel 3022 is in communication with the first water guide groove 3021, and the second end of the drainage channel 3022 extends to the first side of the first inner corner 31 along the first direction. The water flow guide structure 302 is easy to manufacture, does not increase the material cost, is easy to assemble, is convenient to maintain, and has high cost performance.

[0091] Specifically, as shown in FIGS. Figure 10 , when water droplets d enter the joint gap between the first frame part 11 and the first outer corner 32, the water droplets d are blocked by the water collecting groove 301 on the first outer corner 32 and are accumulated in the water collecting groove 301. Due to the action of gravity, the water in the water collecting groove 301 flows into the first water guide groove 3021 on the first inner corner 31 through the water inlet 3011, and then flows out of the first frame part 11 through the drainage channel 3022, thereby realizing the water outflow in the optical touch frame, effectively preventing the water from penetrating into the accommodation space of the first frame part 11, and avoiding the corrosion of the touch circuit board 2.

[0092] Specifically, the bottom surface of the first water guide groove 3021 can be designed to be inclined towards the drainage channel 3022, so that the side of the first water guide groove 3021 near the drainage channel 3022 is lower, thereby facilitating the water flow in the first water guide groove 3021 to the drainage channel 3022 and facilitating the water outflow in the water collecting groove 301.

[0093] Specifically, the bottom surface of the first water guide groove 3021 can be designed as a straight surface or an arc surface, which is not limited here and can be determined according to the actual situation. For example, when the bottom surface of the first water guide groove 3021 is designed as a straight surface, the inclination angle of the bottom surface of the first water guide groove 3021 can be 0-5 degrees or other inclination angles, which is not limited here and can be determined according to the actual situation.

[0094] Specifically, as shown in FIGS. Figure 7 and Figure 10As shown, the water inlet 3011 at the bottom of the water collection tank 301 extends into the first water guide trough 3021. The first water guide trough 3021 surrounds the water inlet 3011, ensuring that the water in the water collection tank 301 naturally falls and accumulates in the first water guide trough 3021. The structure and size of the water inlet 3011 are not limited here and can be determined according to actual conditions.

[0095] For example, Figure 8 and Figure 9 As shown, the length of the first water channel 3021 along the extension direction of the first frame portion 11 can be L2, the width of the first water channel 3021 along the thickness direction of the first inner corner 31 can be L3, the length of the water inlet 3011 along the extension direction of the first frame portion 11 can be L4, and the width of the water inlet 3011 along the thickness direction of the first inner corner 31 can be L5. In actual applications, considering the convenience of assembling the first outer corner 32 and the first inner corner 31, L2 can be required to be greater than L4, for example, L2 greater than or equal to 2*L4; and L3 greater than L5, for example, L3 minus L5 equals 0.4 mm to 0.6 mm.

[0096] In the embodiment of the present utility model, Figure 11 As shown, the flow guide structure 302 may include a second water guide trough 303 located on one side of the first connecting corner 3 along a first direction, where the first direction is the thickness direction of the first connecting corner 3. The water collecting trough 301 is connected to the second water guide trough 303 via a water inlet 3011. The flow guide structure 302 is easy to manufacture, does not increase material costs, is convenient to assemble and maintain, and is cost-effective.

[0097] Specifically, if Figure 12 As shown, the second water channel 303 can be arranged on the first side of the first outer corner 32 along the first direction, and the water inlet 3011 of the water collecting trough 301 is arranged near the side where the second water channel 303 is located. The structure is simple, easy to manufacture, and will not increase material costs.

[0098] In the above optical touch frame, the first outer corner 32 itself can meet the function of accumulating water droplets and guiding them out. The first connecting corner 3 directly guides the water droplets out through the first outer corner 32, preventing the water droplets from entering the accommodation space of the first frame portion 11. Figure 13 and Figure 14 As shown, when a water drop d enters the joint gap between the first frame portion 11 and the first outer corner 32, the water drop d will be blocked by the water collecting groove 301 on the first outer corner 32 and accumulated in the water collecting groove 301. Then, the water in the water collecting groove 301 flows along the water inlet 3011 to the second water guide groove 303, and the water in the water collecting groove 301 is discharged to the outside of the first frame portion 11 through the second water guide groove 303, which can effectively prevent water from seeping into the accommodation space of the first frame portion 11 and avoid corrosion of the touch circuit board 2.

[0099] Specifically, in the above-mentioned first outer corner 32, the bottom surface of the water collection tank 301 can be set to an inclined state, so that the side of the water collection tank 301 with the water inlet 3011 is lower, and the side away from the water inlet 3011 is higher, which can facilitate the discharge of water in the water collection tank 301.

[0100] The bottom surface of the water collecting trough 301 can be a straight surface or a curved surface, which is not limited here and is determined according to actual conditions. For example, the bottom surface of the water collecting trough 301 is a straight surface, and the inclination angle of the bottom surface of the water collecting trough 301 can be 0 degrees to 5 degrees, or other inclination angles, which are not limited here and are determined according to actual conditions.

[0101] Specifically, the structure and shape of the second water channel 303 are not limited here and are determined according to actual conditions. Figure 12 As shown, the second water guide groove 303 on the first outer corner 32 can be provided on the connection portion, and the bottom surface of the second water guide groove 303 can be fixedly connected to the first outer corner 32 by screws.

[0102] In an embodiment of the present invention, the optical touch frame is used to wrap the display module. The first side of the first inner corner 31 along the first direction, the first side of the first outer corner 32 along the first direction, and the first side of the first connecting corner 3 along the first direction can all be on the same side as the non-display side of the display module, that is, the guide structure 302 can guide the water flowing out of the water collection tank 301 to the back of the display device to avoid affecting the normal display of the display device.

[0103] In the embodiment of the present utility model, Figure 5 As shown, the accommodating space of the first frame portion 11 may include a circuit board cavity E and a functional cavity F; wherein, the functional cavity F is connected to the first port, the circuit board cavity E may be located on the side of the functional cavity F away from the first side surface, the circuit board cavity E is used to accommodate a touch circuit board, and the end face of the first frame portion 11 has a second port connected to the circuit board cavity E, and the second port is located on the side of the first port away from the first side surface.

[0104] In the above-mentioned optical touch frame, the water collection groove 301 on the first connecting corner 3 can extend into the functional cavity F. Under the action of gravity, water droplets from the outside enter the first frame part 11 from the splicing gap, and first reach the first port connected to the functional cavity F. At this time, the water droplets will be blocked by the water collection groove 301 extending into the functional cavity F, accumulate in the water collection groove 301, and then be led out of the first frame part 11 through the diversion structure 302, and will not drip into the circuit board cavity E from the second port, which can prevent the water droplets entering from the outside from corroding the touch circuit board 2 in the circuit board cavity E.

[0105] The functional cavity F can be provided with other functional devices such as a camera, which is not limited here and depends on the actual situation.

[0106] The first frame portion 11 may be an integrated structure, such as Figure 5 As shown, or, the first frame portion 11 may also be of split design, which is not limited here and depends on the actual situation.

[0107] For example, the first frame portion 11 may include a first sub-frame and a second sub-frame stacked together; the first sub-frame having a functional cavity F and a first port; and the second sub-frame having a circuit board cavity E and a second port. The first sub-frame and the second sub-frame may be fixedly connected by bonding, snapping, or other methods, which are not limited here and are determined based on actual circumstances.

[0108] In the embodiment of the present utility model, Figure 4 As shown, the first frame portion 11 may have a first side surface and a second side surface disposed opposite each other. The second end of the first connecting corner 3 is bent from the first end of the first connecting corner 3 toward a second direction, where the second direction may be a direction from the first side surface to the second side surface. The first end of the first connecting corner 3 is spliced ​​with the end portion of the first frame portion 11, and the second end of the first connecting corner 3 can be bent from the first end toward the second direction to splice with another frame portion.

[0109] In the embodiment of the present utility model, Figure 15 and Figure 16 As shown, the optical touch frame can also include a second frame portion 12; the first end of the second frame portion 12 is spliced ​​with the second end of the first connecting corner 3, the second frame portion 12 has a circuit board cavity for accommodating a touch circuit board, and the end face of the second frame portion 12 has a third port connected to the circuit board cavity.

[0110] Specifically, the second frame portion 12 and the first frame portion 11 can be spliced ​​together through the first connecting corner 3. When the first connecting corner 3 includes a first inner corner 31 and a first outer corner 32, the second end of the first inner corner 31 can be fixedly connected to the second frame portion 12, and the first outer corner 32 is located on the outside of the first inner corner 31. The second end of the first outer corner 32 can be spliced ​​with the second frame portion 12.

[0111] Specifically, the second frame portion 12 may be a first side frame portion or a second side frame portion spliced ​​with the top side frame portion.

[0112] In the embodiment of the present utility model, Figure 15 and Figure 16As shown, the optical touch frame can further include a corner sealing plug 5, which can be located inside the first connecting corner 3, a first end of the corner sealing plug 5 abuts against an end face of the first frame part 11 and is opposite to the second port, and a second end of the corner sealing plug 5 abuts against an end face of the second frame part 12 and is opposite to the third port.

[0113] In the optical touch frame, the two ends of the corner sealing plug 5 can be sealingly matched with the ports that are in communication with the circuit board cavities E of the first frame part 11 and the second frame part 12, so as to prevent water droplets entering the frame part 1 from the splicing gap from entering the circuit board cavities E, and the waterproof performance of the optical touch frame can be further improved.

[0114] Specifically, the end of the corner sealing plug 5 can be interference-fitted with the end of the frame part 1, and the gap between the end of the corner sealing plug 5 and the end of the frame part 1 can be 0 to -0.5 mm, so as to ensure the sealing and waterproof effect of the corner sealing plug 5.

[0115] In the embodiment of the utility model, as shown in Figures 15 to 17 As shown, the optical touch frame can further include two touch circuit boards 2 and a connecting line 4, the two touch circuit boards 2 are respectively located in the circuit board cavities E of the first frame part 11 and the second frame part 12, and the ends of the two touch circuit boards 2 are connected by the connecting line 4, so as to ensure the circuit performance of the optical touch frame, the corner sealing plug 5 can have a communication cavity that is in communication with the circuit board cavities E, and the connecting line 4 can be routed through the communication cavity of the corner sealing plug 5.

[0116] In the optical touch frame, the corner sealing plug 5 can block water droplets from entering the circuit board cavities E, so as to prevent the touch circuit boards 2 in the circuit board cavities E from being corroded by the water droplets, and the corner sealing plug 5 can also protect the connecting line 4 connected between the two touch circuit boards 2, facilitate the routing of the connecting line 4, and has a simple structure and is easy to assemble.

[0117] Specifically, the connecting line 4 can be an FFC flat cable, the end of the touch circuit board 2 can be provided with a wiring port, and the connecting line 4 can be connected with the wiring port. The thickness of the FFC flat cable is about 0.15 mm to 0.5 mm. In order to facilitate the routing of the connecting line 4 in the communication cavity of the corner sealing plug 5, the width of the communication cavity port of the corner sealing plug 5 can be greater than or equal to 1.5 mm.

[0118] Specifically, as shown in Figure 15 When the first connecting corner 3 includes a first inner corner 31 and a first outer corner 32, the corner sealing plug 5 can be arranged inside the first outer corner 32 and arranged along the thickness direction of the first connecting corner 3 with the first inner corner 31, so as to reasonably assemble and optimize the appearance of the optical touch frame.

[0119] In the embodiment of the present invention, the Shore hardness of the corner sealing plug 5 can be between 40 and 80 degrees, and it has a certain elasticity, so that the ends of the corner sealing plug 5 can be interference-fitted with the ends of the two frame portions 1. The material of the corner sealing plug 5 can be silicone or other materials, which are not limited here and can be determined according to actual conditions.

[0120] In the embodiment of the present utility model, Figure 17 and Figure 18 As shown, the area opposite to the port connected to the circuit board cavity E at the end of the corner sealing plug 5 has a guide structure 51, which can be inserted into the circuit board cavity E. The guide structure 51 can facilitate the assembly between the corner sealing plug 5 and the frame part 1.

[0121] Specifically, the guide structure 51 can fit tightly with the side walls of the circuit board cavity E on both sides along the thickness direction of the first connecting corner 3, thereby ensuring the tight fit between the corner sealing plug 5 and the frame portion 1 and the sealing effect of the corner sealing plug 5.

[0122] In the embodiment of the present utility model, Figures 16 to 18 As shown, the area where the end of the corner sealing plug 5 is opposite to the port connected to the circuit board cavity E can have a limiting structure 52. The end of the touch circuit board 2 extends out of the circuit board cavity E and abuts against the limiting structure 52, which can ensure that the position of the touch circuit board 2 is fixed.

[0123] In the embodiment of the present application, the overall structure of the optical touch frame can be as follows: Figures 3 and 4 As shown, it includes four frame parts 1 and four connecting corners 3. The four frame parts 1 include a first frame part 11 and a third frame part 13 (ground side frame part) arranged opposite to each other, and two second frame parts 12 arranged opposite to each other. Each frame part 1 has a circuit board cavity. The four frame parts 1 are spliced ​​together through four connecting corners 3 to form a rectangular frame; it also includes four touch circuit boards 2 and three connecting lines 4. The four touch circuit boards 2 are arranged in the circuit board cavity E of the four frame parts 1 in a one-to-one manner. The four touch circuit boards 2 are connected in sequence through three connecting lines 4. A corner sealing plug 5 can be set on the inner side of each connecting corner 3. The corner sealing plug 5 is L-shaped. The connecting line 4 can be routed in the corner sealing plug 5 to ensure that the port of the circuit board cavity of the frame part is sealed, thereby improving the waterproof performance of the optical touch frame.

[0124] The utility model also provides a display device, comprising any one of the optical touch frame provided by the above technical solution.

[0125] Specifically, the display device may be an infrared touch screen, which further includes a display module and a main control circuit board. The optical touch frame may surround the display module. The display module may be a liquid crystal display module or an organic electroluminescent display module. The main control circuit board is signal-connected to the touch circuit board in the optical touch frame, which is in turn signal-connected to the display module. The main control circuit board may control the display of the display module based on signals transmitted or received by the touch circuit board.

[0126] Specifically, the optical touch frame may include four frame parts 1, including a first frame part 11 (top side frame part) and a third frame part 13 (ground side frame part) arranged oppositely, and two second frame parts 12 (first side frame part and second side frame part) arranged oppositely. The touch circuit boards 2 in the first frame part 11 and the third frame part 12 respectively have an infrared emitting unit and an infrared receiving unit; the touch circuit boards in the two second frames 12 respectively have an infrared emitting unit and an infrared receiving unit; the above-mentioned optical touch frame can realize the touch recognition function through the relative infrared emitting unit and infrared receiving unit. The main control circuit board can control the display of the display module through the touch recognition signal.

[0127] The infrared emitting unit may include a plurality of infrared emitters arranged along the extending direction of the frame portion 1 , and the infrared receiving unit may include a plurality of infrared receivers opposite to the plurality of infrared emitters.

[0128] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An optical touch frame, characterized in that: include: a first frame portion, wherein the first frame portion has an accommodation space therein, the first frame portion has an end surface and a first side surface connected to the end surface, and the end surface of the first frame portion has a first port communicating with the accommodation space; a first connecting corner, wherein a first end of the first connecting corner is spliced ​​with an end portion of the first frame portion, the first connecting corner has a splicing surface opposite to an end surface of the first frame portion, and a splicing gap is formed between the splicing surface and the end surface of the first frame portion; A water collecting groove is provided in an area of ​​the splicing surface opposite to the first port. The water collecting groove extends into the accommodating space. The notch of the water collecting groove faces the first side surface and is opposite to the splicing gap.

2. The optical touch frame according to claim 1, wherein: The bottom of the water collecting tank is provided with a water inlet; The first connecting corner further includes a guide structure, which is communicated with the water inlet and is used to guide water out of the water collecting tank.

3. The optical touch frame according to claim 2, wherein: The first connecting corner includes a first inner corner and a first outer corner; The first end of the first inner corner is fixedly connected to the first frame portion; The first outer corner is located outside the first inner corner, and the first end of the first outer corner has the splicing surface.

4. The optical touch frame according to claim 3, wherein: The diversion structure is located on the side of the first inner corner facing the bottom of the water collecting tank; The guide structure is used to guide water in the water collecting tank to a first side of the first inner corner along a first direction, where the first direction is a thickness direction of the first connecting corner.

5. The optical touch frame according to claim 4, characterized in that: The diversion structure includes a first water guide groove and a diversion channel; The first water guide trough is opposite to the water inlet of the water collecting trough, and the water inlet extends into the first water guide trough; A first end of the drainage channel is connected to the first water guide groove, and a second end of the drainage channel extends to a first side of the first inner corner along a first direction.

6. The optical touch frame according to claim 2, wherein: The guide structure includes a second water guide groove, and the second water guide groove is located on one side of the first connecting corner along a first direction, and the first direction is a thickness direction of the first connecting corner; The water collecting trough is connected with the second water guiding trough through the water inlet.

7. The optical touch frame according to claim 1, wherein: The first frame portion has a first side surface and a second side surface that are oppositely arranged; The second end of the first connecting corner is bent from the first end of the first connecting corner toward a second direction, and the second direction is a direction from the first side surface to the second side surface.

8. The optical touch frame according to any one of claims 1 to 7, characterized in that: The accommodating space includes a functional cavity and a circuit board cavity; The functional cavity is in communication with the first port; The circuit board cavity is located on a side of the functional cavity away from the first side surface, and the circuit board cavity is used to accommodate a touch circuit board; An end surface of the first frame portion has a second port communicating with the circuit board cavity, and the second port is located on a side of the first port away from the first side surface.

9. The optical touch frame according to claim 8, characterized in that: The first frame portion includes a first sub-frame and a second sub-frame that are overlapped; The first sub-frame has the functional cavity and the first port; The second sub-frame has the circuit board cavity and the second port.

10. The optical touch frame according to claim 8, wherein: Also includes a second frame portion; The first end of the second frame portion is spliced ​​with the second end of the first connecting corner, the second frame portion has a circuit board cavity for accommodating a touch circuit board, and the end surface of the second frame portion has a third port connected to the circuit board cavity.

11. The optical touch frame according to claim 10, wherein: Also included are corner sealing plugs; The corner sealing plug is located on the inner side of the first connecting corner, the first end of the corner sealing plug is against the end face of the first frame part and opposite to the second port, and the second end of the corner sealing plug is against the end face of the second frame part and opposite to the third port.

12. The optical touch frame according to claim 11, wherein: Also included are two touch control circuit boards and connecting cables; The two touch circuit boards are respectively located in the circuit board cavity of the first frame portion and the circuit board cavity of the second frame portion, and ends of the two touch circuit boards are connected by the connecting wire; The corner sealing plug has a communication cavity, and the communication cavity is communicated with the circuit board cavity; The connecting line is routed through the communicating cavity of the corner sealing plug.

13. The optical touch frame according to claim 12, wherein: The Shore hardness of the corner sealing plug is between 40 degrees and 80 degrees.

14. The optical touch frame according to claim 12, wherein: The end of the corner sealing plug has a guide structure in an area opposite to the port communicating with the circuit board cavity, and the guide structure can be inserted into the circuit board cavity.

15. The optical touch frame according to claim 12, wherein: The area where the end of the corner sealing plug is opposite to the port communicating with the circuit board cavity has a limiting structure, and the end of the touch circuit board extends out of the circuit board cavity and abuts against the limiting structure.

16. A display device, characterized in that: Comprising the optical touch frame as described in any one of claims 1-15.

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