Light-emitting keyboard light guide film, light-emitting keyboard module and keyboard

Abstract

The utility model belongs to the technical field of keyboards, and particularly relates to a light-emitting keyboard light guide film, a light-emitting keyboard module and a keyboard. Comprising a light guide film body, a plurality of first optical microstructures are arranged on the lower end face of the light guide film body, and a plurality of second optical microstructures are arranged on the upper end face of the light guide film body. The first optical microstructure and the second optical microstructure are arranged on the upper end face and the lower end face of the light guide film body respectively, the layout that only the optical microstructure is arranged at the lower end of a traditional light guide film is changed, and due to the fact that the structure of the upper surface of the light guide film with the microstructures on the two faces is changed, when light is refracted and reflected to the upper surface through the lower-layer microstructure, the light can be refracted and reflected to the lower-layer microstructure. The second optical microstructures on the upper surface can change the light path, light is concentrated, the illumination angle is reduced, more light irradiates the key cap, and the final light intensity is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of keyboards, and in particular relates to a luminous keyboard light-guiding film, a luminous keyboard module and a keyboard. Background Art

[0002] As an input device of electronic devices, keyboards have peripherals or integrated settings. With the development and upgrading of products, backlit keyboards are becoming more and more popular in daily use. The current backlight principle of backlit keyboards is to add a backlight panel to the circuit board of the keyboard, and the keycaps are printed with translucent characters on the surface and an opaque coating is added to the surface other than the characters, so that the light on the backlight panel is transmitted to the keycaps to realize the illumination of the characters on the keycaps. At present, a light guide layer with an optical microstructure is mostly used between the backlight panel and the keycaps to concentrate and transmit the light, and the focusing performance of the light guide layer directly affects the final light output effect. Summary of the invention

[0003] The utility model aims to provide a light-guiding film for a luminous keyboard, which integrates optical microstructures on both sides of a light-guiding layer, changes the traditional keycap structure, and achieves better light-guiding and focusing effects.

[0004] Based on this, the utility model provides a light-guiding film for a luminous keyboard, comprising a light-guiding film body, a lower end surface of the light-guiding film body being provided with a plurality of first optical microstructures, and an upper end surface of the light-guiding film body being provided with a plurality of second optical microstructures.

[0005] In the above-mentioned luminous keyboard light guide film, a plurality of the first optical microstructures are concave points sunken toward the inside of the light guide film body, and a plurality of the second optical microstructures are convex points protruding outwardly toward the light guide film body.

[0006] In the above-mentioned luminous keyboard light guide film, the plurality of the first optical microstructures and the plurality of the second optical microstructures are concave points sunken toward the inside of the light guide film body.

[0007] In the luminous keyboard light-guiding film as described above, a plurality of the first optical microstructures are cylindrical, polygonal cylindrical or polygonal with pointed ends.

[0008] In the luminous keyboard light-guiding film as described above, a plurality of the second optical microstructures are cylindrical, polygonal cylindrical or polygonal with pointed ends.

[0009] In the above-mentioned luminous keyboard light guide film, the plurality of first optical microstructures are close to the middle of the light guide film body, and a lower glue coating plane is left between the two sides or four sides of the lower end surface of the light guide film body.

[0010] In the above-mentioned luminous keyboard light guide film, the plurality of second optical microstructures are close to the middle of the light guide film body, and an upper glue coating plane is left between the two sides or four sides of the upper end surface of the light guide film body.

[0011] The utility model also provides a luminous keyboard module, which includes a light source component, a shading assembly keycap assembly and the above-mentioned luminous keyboard light guide film, the light guide film body is arranged on the upper side of the light source component, the shading assembly is arranged on the upper side of the light guide film body, the keycap assembly is arranged on the upper side of the shading assembly, and the light guide film body is adhered to the light source component through a lower glue coating plane and to the shading assembly through an upper glue coating plane.

[0012] In the luminous keyboard module as described above, a reflective layer is provided between the light source component and the light guide film body, the lower end of the reflective layer is an opaque back surface, and the light source component is provided with an LED lamp protruding to the upper side of the reflective layer and opposite to the side of the light guide film body.

[0013] The utility model also provides a keyboard, comprising a keyboard body, on which the above-mentioned luminous keyboard module is adopted.

[0014] Implementing the embodiments of the utility model has the following beneficial effects:

[0015] 1. The utility model provides a light-guiding film for a luminous keyboard, wherein the upper and lower end surfaces of the light-guiding film body are respectively provided with a first optical microstructure and a second optical microstructure, which changes the layout of the traditional light-guiding film in which only the optical microstructure is provided at the lower end. The light-guiding film with a double-sided microstructure changes the structure of the upper surface. When the lower microstructure refracts and reflects light to the upper surface, the second optical microstructure on the upper surface changes the light path, concentrates the light, reduces the illumination angle, and allows more light to shine on the keycap, thereby increasing the final light intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a light-guiding film for a luminous keyboard provided by an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of internal light guide;

[0019] Figure 3 for Figure 1 Schematic diagram of the attachment position of the light-guiding film of the luminous keyboard;

[0020] Figure 4 is a schematic diagram of Embodiment 1 of the shape of the optical microstructure;

[0021] Figure 5 is a schematic diagram of Embodiment 2 of the shape of the optical microstructure;

[0022] Figure 6 A schematic diagram of the first embodiment showing the number and size of optical microstructures;

[0023] Figure 7 A schematic diagram of the second embodiment showing the number and size of optical microstructures;

[0024] Figure 8 The utility model is a schematic diagram of a light-emitting keyboard module. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 , Figure 2 As shown, the embodiment of the utility model provides a light-guiding film for a luminous keyboard, including a light-guiding film body 1, wherein the lower end surface of the light-guiding film body 1 is provided with a plurality of first optical microstructures 11, and the upper end surface of the light-guiding film body 1 is provided with a plurality of second optical microstructures 11. The upper and lower end surfaces of the light-guiding film body 1 are respectively provided with the first optical microstructure 11 and the second optical microstructure 12, which changes the layout of the traditional light-guiding film in which only the lower end is provided with the optical microstructure. Since the double-sided microstructured light-guiding film changes the structure of the upper surface, when the lower microstructure refracts and reflects the light to the upper surface, the second optical microstructure 12 on the upper surface will change the light path, concentrate the light to reduce the illumination angle, make more light shine on the keycap, and increase the final brightness intensity. In this way, under the same conditions, the brightness of the light-guiding film with double-sided microstructure is 40% higher than that of the light-guiding film with single-sided microstructure (the thicker the optical PC, the higher the improvement ratio, so the energy-saving effect is achieved.

[0027] Generally speaking, the optical microstructure can be set to have multiple outward protrusions or inward recesses, and the light emitted by the lamp source shines into the interior of the light guide film body 1 from the side of the light guide film body 1, encounters the concave optical microstructure inside or encounters the protruding optical microstructure on the side, and gathers on multiple optical microstructure sets to form multiple concentrated spotlights, thereby making the light more concentrated and facilitating the realization of a variety of lighting effects on the surface of the keycap.

[0028] The present solution adopts a double-sided optical microstructure, which also achieves a better light concentration effect by different combinations of the first optical microstructure 11 and the second optical microstructure 12.

[0029] Specifically, in the first embodiment, a plurality of the first optical microstructures 11 are concave points sunken toward the inside of the light guide film body 1, and a plurality of the second optical microstructures 11 are convex points protruding outward toward the light guide film body 1. That is, the light guide film body 1 has a combination structure of multiple concave positions on the lower side and multiple convex positions on the upper side.

[0030] In the first embodiment, a plurality of the first optical microstructures 11 and a plurality of the second optical microstructures 11 are concave points sunken toward the inside of the light guide film body 1. That is, both the upper side and the lower side of the light guide film body 1 are concave structures.

[0031] like Figure 4 , Figure 5 As shown, in this solution, the shape setting of a single optical microstructure will also have different effects on the reflection or collection of light. Several of the first optical microstructures 11 are cylindrical, polygonal, or polygonal with a pointed tip. In addition, several of the second optical microstructures 12 are cylindrical, polygonal, or polygonal with a pointed tip. It can be a circle, a ring, a triangle, a polygon, a V-shape, etc.

[0032] Of course, since the present solution adopts a double-sided optical microstructure, the first optical microstructure 11 and the second optical microstructure 12 can be combined in the same shape or in different shapes.

[0033] In addition, if Figure 6 , Figure 7 As shown, since the present solution adopts a double-sided optical microstructure, a combination of a single first optical microstructure 11 and a single second optical microstructure 12 of the same or different sizes can be set. The combination of the first optical microstructure 11 and the single second optical microstructure 12 of the same or different numbers can be used to achieve different combination solutions for improving brightness, and more combination solutions for changing the luminous effect are also provided.

[0034] In addition, in this solution, the light guide film body 1 is made of optical grade PC material with a thickness of 0.1mm-0.25mm. A variety of light path structures are designed inside the light guide film. These structures can achieve specific light distribution effects, such as uniform distribution, focused distribution, etc. through precise calculation and simulation. This makes the light guide film have a wider application prospect in the fields of lighting, display, etc.

[0035] This solution combines the above-mentioned multiple shapes and quantities, and also provides a variety of specifications of light guide film products. From thickness, size to optical path structure, they can be customized according to the specific needs of customers. This enables light guide film products to meet the application needs of more different fields and create greater value for customers.

[0036] like Figure 3 As shown, in the embodiment of the utility model, the plurality of first optical microstructures 11 are close to the middle of the light guide film body 1, and a lower glue-coating plane 101 is left between the two sides or four sides of the lower end surface of the light guide film body 1. It adopts a reasonable layout, and a glue-coating plane 101 is left on the four sides or two sides of the lower end of the light guide film body 1. In existing use, glue is generally used to attach the light guide film body 1, but currently, the optical microstructure design of the concave structure due to the glue entering will directly affect the light guiding property. This solution reserves a glue-coating or glue-coating plane through a reasonable layout, which is conducive to avoiding the microstructure design and avoiding affecting the light guiding property. Moreover, by reserving a glue-coating or glue-coating plane, it can also better align and improve the pasting effect.

[0037] Specifically, the plurality of second optical microstructures 12 are close to the middle of the light guide film body 1, and an upper glue coating plane 102 is left between the two sides or four sides of the upper end surface of the light guide film body 1. The effect is the same as above, and the double-sided optical microstructure is adapted to the present solution.

[0038] like Figure 8 As shown, the utility model also provides a light-emitting keyboard module, including a light source component 2, a shading component 3, a keycap component 4 and the above-mentioned light-emitting keyboard light-guiding film, wherein the light-guiding film body 1 is arranged on the upper side of the light source component 2, the shading component 3 is arranged on the upper side of the light-guiding film body 1, the keycap component 4 is arranged on the upper side of the shading component 3, and the light-guiding film body 1 is adhered to the light source component 2 through the lower glue-coated plane 101, and is adhered to the shading component 3 through the upper glue-coated plane 102. Under the action of the shading component 3, the light that passes through the light-guiding film body 1 can be concentrated at a certain position to emit light, thereby achieving a more concentrated effect.

[0039] Specifically, a reflective layer 5 is provided between the light source component 2 and the light guide film body 1 , the lower end of the reflective layer 5 is an opaque back surface, and the light source component 2 is provided with an LED lamp 21 protruding to the upper side of the reflective layer 5 and opposite to the side of the light guide film body 1 .

[0040] The utility model also provides a keyboard, comprising a keyboard body, on which the above-mentioned luminous keyboard module is adopted. Since the same luminous keyboard module is adopted, the keyboard also has the same beneficial effects.

[0041] The utility model provides a light-guiding film for a luminous keyboard, wherein a first optical microstructure and a second optical microstructure are respectively arranged on the upper and lower end surfaces of the light-guiding film body, which changes the layout of the traditional light-guiding film in which only the optical microstructure is arranged on the lower end. Since the light-guiding film with a double-sided microstructure changes the structure of the upper surface, when the lower microstructure refracts and reflects light to the upper surface, the second optical microstructure on the upper surface will change the light path, concentrate the light, reduce the illumination angle, make more light shine on the keycaps, and increase the final light intensity.

[0042] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A light-guiding film for a luminous keyboard, characterized in that: It comprises a light guide film body (1), wherein a plurality of first optical microstructures (11) are provided on the lower end surface of the light guide film body (1), and a plurality of second optical microstructures (12) are provided on the upper end surface of the light guide film body (1).

2. The luminous keyboard light guide film according to claim 1, characterized in that: A plurality of the first optical microstructures (11) are concave points sunken toward the inside of the light guide film body (1), and a plurality of the second optical microstructures (12) are convex points convex outwardly toward the light guide film body (1).

3. The luminous keyboard light guide film according to claim 1, characterized in that: A plurality of the first optical microstructures (11) and a plurality of the second optical microstructures (12) are concave points that are recessed toward the inside of the light guide film body (1).

4. A luminous keyboard light guide film according to any one of claims 1 to 3, characterized in that: A plurality of the first optical microstructures (11) are cylindrical, polygonal, or polygonal with a pointed end.

5. A light-emitting keyboard light-guiding film according to any one of claims 1 to 3, characterized in that: A plurality of the second optical microstructures (12) are cylindrical, polygonal, or polygonal with a pointed end.

6. The light-guiding film for a luminous keyboard according to claim 1, characterized in that: The plurality of first optical microstructures (11) are close to the middle of the light guide film body (1), and a lower glue coating plane (101) is left between the two sides or four sides of the lower end surface of the light guide film body (1).

7. The luminous keyboard light guide film according to claim 1 or 6, characterized in that: The plurality of second optical microstructures (12) are close to the middle of the light guide film body (1), and an upper glue coating plane (102) is left between the two sides or four sides of the upper end surface of the light guide film body (1).

8. A luminous keyboard module, characterized in that: The light-emitting keyboard comprises a light source component (2), a shading component (3), a keycap component (4), and a light-guiding film for a light-emitting keyboard as claimed in claim 7, wherein the light-guiding film body (1) is arranged on the upper side of the light source component (2), the shading component (3) is arranged on the upper side of the light-guiding film body (1), the keycap component (4) is arranged on the upper side of the shading component (3), and the light-guiding film body (1) is adhered to the light source component (2) via a lower adhesive coating plane (101) and adhered to the shading component (3) via an upper adhesive coating plane (102).

9. The luminous keyboard module according to claim 8, characterized in that: A reflective layer (5) is further provided between the light source component (2) and the light guide film body (1); the lower end of the reflective layer (5) is a light-proof back surface; and an LED lamp (21) is provided on the light source component (2) and protrudes to the upper side of the reflective layer (5) and is opposite to the side surface of the light guide film body (1).

10. A keyboard, characterized in that: It comprises a keyboard body, on which the luminous keyboard module as claimed in claim 8 is adopted.

Images