Low-radiation infrared touch screen

Abstract

The utility model discloses a low-radiation infrared touch screen which comprises a panel, a main board, a front frame, a rear cover and a fixing frame, an installation cavity is formed between the front frame and the rear cover after the front frame and the rear cover are buckled, the panel and the fixing frame are installed in the installation cavity, the main board is installed on the fixing frame and connected with the panel through electric signals, and the low-radiation infrared touch screen further comprises an anti-radiation cover arranged outside the main board in a covering mode. The anti-radiation cover is fixedly connected with the fixing frame; conductive gauze is arranged on the inner wall of the front frame and the inner wall of the rear cover, and the anti-radiation cover and the conductive gauze are grounded through wires. According to the low-radiation infrared touch screen provided by the utility model, the radiation-proof cover is covered outside the main board, the conductive gauze is arranged on the inner wall of the front frame and the inner wall of the rear cover, and the radiation-proof cover and the conductive gauze are grounded through wires, so that outward electromagnetic radiation of the main board and an internal circuit is inhibited, and the shielding effect on the electromagnetic radiation is greatly enhanced; therefore, the electromagnetic radiation of the infrared touch screen is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a low-radiation infrared touch screen. Background Art

[0002] Infrared touch screen technology is composed of infrared emitting and receiving sensing elements installed on the outer frame of the touch screen. On the surface of the screen, an infrared detection network is formed. Any touching object can change the infrared on the contact point to realize touch screen operation. The implementation principle of infrared touch screen is similar to surface acoustic wave touch. It uses infrared emitting and receiving sensing elements. These elements form an infrared detection network on the surface of the screen. The object of the touch operation (such as a finger) can change the infrared of the contact point, which is then converted into the coordinate position of the touch to realize the response of the operation. On the infrared touch screen, the circuit board devices arranged on the four sides of the screen have infrared emitting tubes and infrared receiving tubes, which form a horizontal and vertical cross infrared matrix.

[0003] Existing infrared touch screens have poor radiation protection effects. Traditional infrared touch screens generally use radiation protection films for radiation protection. However, a single radiation protection film has a very weak effect on the display screen, thus causing hidden harm to people's bodies over a long period of time. It is not only easy to trigger diseases, but also seriously affects the eyes. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a low-radiation infrared touch screen to solve the technical problems raised in the background technology.

[0005] A low-radiation infrared touch screen, comprising a panel, a main board, a front frame, a rear cover and a fixing frame, wherein the front frame and the rear cover are buckled together to form a mounting cavity, the panel and the fixing frame are mounted in the mounting cavity, the main board is mounted on the fixing frame, the main board is connected to the panel by electrical signals, and further comprising a radiation shield arranged outside the main board, the radiation shield being fixedly connected to the fixing frame;

[0006] Conductive mesh is provided on the inner wall of the front frame and the inner wall of the rear cover, and the radiation protection cover and the conductive mesh are grounded through wires.

[0007] Furthermore, the radiation shield comprises a mounting frame and a conductive mesh arranged on the side walls of the mounting frame, the mounting frame is in a cubic shape, and the conductive mesh is arranged on five side walls of the mounting frame.

[0008] Furthermore, the mounting frame is fixedly connected to the fixing frame by screws.

[0009] Furthermore, a conductive mesh is arranged on the fixing frame, and the conductive mesh is arranged opposite to the main board.

[0010] Furthermore, the conductive mesh comprises a mesh layer, and a transition layer, a metal plating layer and a metal protective layer are sequentially arranged outwardly on both sides of the mesh layer.

[0011] Furthermore, the mesh layer is a polyurethane fiber mesh.

[0012] Furthermore, the mesh layer has a thickness of 0.02 mm to 0.04 mm.

[0013] Furthermore, the metal plating layer is made of copper or nickel.

[0014] Furthermore, the metal protective layer is a chrome plating layer.

[0015] The beneficial effects of the utility model are embodied in:

[0016] The low-radiation infrared touch screen provided by the utility model has an anti-radiation cover on the outer cover of the mainboard, and conductive meshes are arranged on the inner wall of the front frame and the inner wall of the rear cover, and the anti-radiation cover and the conductive mesh are grounded through wires, so as to suppress the outward electromagnetic radiation of the mainboard and internal circuits, greatly enhance the shielding effect of electromagnetic radiation, thereby further reducing the electromagnetic radiation of the infrared touch screen, and can further enhance the ability of the infrared touch screen to resist low-frequency magnetic field interference while reducing radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. For ordinary technicians in this field, other accompanying drawings can also be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the structure of a low-radiation infrared touch screen provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the installation structure of the radiation shield provided in the embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of a fixing frame provided in an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the explosion structure of the radiation shield provided by the embodiment of the utility model;

[0023] Figure 5 A schematic structural diagram of a conductive mesh provided in an embodiment of the utility model.

[0024] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] like Figure 1-Figure 5 As shown, the utility model provides a low-radiation infrared touch screen, including a panel 3, a main board 1, a front frame 4, a rear cover 5 and a fixing frame 2. When the front frame 4 and the rear cover 5 are buckled together, a mounting cavity is formed in the middle. The panel 3 and the fixing frame 2 are mounted in the mounting cavity. The main board 1 is mounted on the fixing frame. The main board 1 is connected to the panel 3 by electrical signals. The utility model also includes a radiation shield 6 that is arranged outside the main board 1. The radiation shield 6 is fixedly connected to the fixing frame 2. Conductive mesh 7 is arranged on the inner wall of the front frame 4 and the inner wall of the rear cover 5. The radiation shield 6 and the conductive mesh 7 are grounded through wires. When specifically installed, the radiation shield 6 and the conductive mesh 7 can be connected to the ground wire of the power line through wires. The radiation shield 6 and the conductive mesh 7 are arranged on the inner wall of the front frame 4 and the inner wall of the rear cover 5 to isolate the electromagnetic radiation of the main board 1, thereby reducing the radiation of the infrared touch screen.

[0032] Specifically, the radiation shield 6 includes a mounting frame 8 and a conductive mesh 7 pasted on the side walls of the mounting frame 8. The mounting frame 8 is in a cubic shape, and the conductive mesh 7 is arranged on five side walls of the mounting frame 8. The mounting frame 8 is fixedly connected to the fixing frame 2 by screws.

[0033] In addition, the fixing frame 2 is also provided with a conductive mesh 7, which is arranged opposite to the main board 1. The conductive mesh 7 not only provides extremely high conductivity and shielding effectiveness, but also has anti-oxidation and anti-corrosion properties. The conductive mesh 7 is soft, smooth, and breathable, which is more conducive to the heat dissipation of the main board 1. The conductive mesh 7 also has the advantages of light weight and easy cutting, good processability, soft texture, bendable, foldable, wrapped and wound, and can be cut into different shapes and sizes, and can be posted, easy to ground, good weather resistance, and not easy to break.

[0034] Specifically, the conductive mesh 7 includes a mesh layer 9, and a transition layer 10, a metal coating 11 and a metal protective layer 12 are sequentially arranged on both sides of the mesh layer 9. The mesh layer 9 is a polyurethane fiber mesh, and the thickness of the mesh layer 9 is 0.02mm-0.04mm. The material of the metal coating 11 is copper or nickel. The metal protective layer 12 is a chromium coating.

[0035] In summary, the low-radiation infrared touch screen provided by the utility model has an anti-radiation cover on the outer cover of the mainboard, and conductive mesh is provided on the inner wall of the front frame and the inner wall of the rear cover, and the anti-radiation cover and the conductive mesh are grounded through wires, so as to suppress the outward electromagnetic radiation of the mainboard and internal circuits, greatly enhance the shielding effect of electromagnetic radiation, thereby further reducing the electromagnetic radiation of the infrared touch screen, and can further enhance the ability of the infrared touch screen to resist low-frequency magnetic field interference while reducing radiation.

[0036] Finally, it should be noted that the various technical features of the technical solution of the present application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

Claims

1. A low-radiation infrared touch screen, comprising a panel, a main board, a front frame, a rear cover and a fixing frame, wherein the front frame and the rear cover are buckled together to form a mounting cavity, the panel and the fixing frame are mounted in the mounting cavity, the main board is mounted on the fixing frame, and the main board is connected to the panel by electrical signals, characterized in that: It also includes a radiation shield arranged outside the mainboard, and the radiation shield is fixedly connected to the fixing frame; Conductive mesh is provided on the inner wall of the front frame and the inner wall of the rear cover, and the radiation protection cover and the conductive mesh are grounded through wires.

2. The low-radiation infrared touch screen according to claim 1, characterized in that: The radiation shield comprises a mounting frame and a conductive mesh arranged on the side walls of the mounting frame. The mounting frame is in a cubic shape, and the conductive mesh is arranged on five side walls of the mounting frame.

3. The low-radiation infrared touch screen according to claim 2, characterized in that: The mounting frame is fixedly connected to the fixing frame by screws.

4. The low-radiation infrared touch screen according to claim 2, characterized in that: The fixing frame is provided with a conductive mesh, and the conductive mesh is arranged opposite to the main board.

5. The low-radiation infrared touch screen according to claim 1, characterized in that: The conductive mesh comprises a mesh layer, and a transition layer, a metal plating layer and a metal protective layer are sequentially arranged outwardly on both sides of the mesh layer.

6. The low-radiation infrared touch screen according to claim 5, characterized in that: The mesh layer is a polyurethane fiber mesh.

7. The low-radiation infrared touch screen according to claim 5, characterized in that: The mesh layer has a thickness of 0.02 mm to 0.04 mm.

8. The low-radiation infrared touch screen according to claim 5, characterized in that: The material of the metal plating layer is copper or nickel.

9. The low-radiation infrared touch screen according to claim 5, characterized in that: The metal protective layer is a chrome plating layer.

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