Luminous keycap module and keyboard
By integrating the optical microstructure and lamp cavity on the back of the keycap and integrating the LED light into the keycap, the problem of increasing thickness of the existing backlit keyboard is solved, and the keyboard is lighter and light source is stable.
Patent Information
- Application Number
- CN202420960561.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing backlit keyboard has increased the thickness of the keyboard due to the addition of backlit boards on the circuit board, which violates the development trend of lightweight and thinner electronic devices.
A luminescent keycap module was designed. By setting the optical microstructure and lamp cavity on the back of the keycap, the LED lamp is integrated into the keycap, and the optical microstructure is used to gather the light emitted by the light source, which cancels the setting of the traditional backlight plate. , and add contact pin groups to ensure the conductive connection of the light source circuit board.
The keyboard is lighter and thinner, which reduces the overall thickness, while ensuring stable power supply and good luminous effect of the light source.
Smart Images
Figure CN222365513U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of keyboards, and in particular relates to a luminous keycap module and a keyboard. Background Art
[0002] As an input device of an electronic device, the keyboard has peripheral or integrated settings. With the development and upgrading of products, backlit keyboards are becoming more and more popular in daily use. The current backlit keyboard has a backlight panel added 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. However, the backlit keyboard of this structure adds a backlight panel to the original multi-layer circuit board and iron plate, which increases the thickness of the keyboard. With the development of lightweight and thin electronic devices, this structure has become an obstacle to reducing the thickness. Utility Model Content
[0003] The utility model aims to provide a luminous keycap module, which changes the traditional keycap structure and facilitates the development of lightness and thinness.
[0004] Based on this, the utility model provides a luminous keycap module, including a keycap, a light source assembly and a contact pin group. The back of the keycap is provided with an optical microstructure, and the back of the keycap has a lamp cavity recessed toward the surface of the keycap. The light source assembly includes a light source circuit board and an LED lamp arranged on the light source circuit board. The LED lamp extends into the lamp cavity, and the contact pin group is connected to the light source circuit board and extends downward.
[0005] In the luminous keycap module as described above, the light source circuit board is close to the optical microstructure.
[0006] In the luminous keycap module as described above, a hook is further provided on the back of the keycap, and the luminous keycap module also includes a scissor support foot and an elastic body connected to the hook.
[0007] A luminous keycap module as described above also includes a support plate, a conductive circuit board arranged on the upper side of the support plate, and a power supply circuit board arranged on the lower side of the support plate, the scissor support legs are connected to the support plate, and the support plate and the conductive circuit board have notches for the contact pin group to be inserted into and contact the power supply circuit board.
[0008] In the luminous keycap module as described above, the optical microstructure and the lamp cavity are integrally formed with the keycap.
[0009] In the luminous keycap module as described above, the scissor support legs support the keycap so that there is a gap between the keycap and the conductive circuit board, the contact pin group includes a positive contact pin and a negative contact pin, the positive contact pin includes a needle sleeve, an ejector pin arranged in the needle sleeve, and a spring, the ejector pin has a top end extending outward from the needle sleeve, and the spring abuts against the end of the needle sleeve.
[0010] In the luminous keycap module as described above, the top end extends from the upper side of the needle sleeve and is connected to the light source circuit board, one end of the spring abuts against the ejector pin, and the other end abuts against the power supply circuit board.
[0011] In the luminous keycap module as described above, the contact pin group is close to the corner of the keycap or the positive contact pin and the negative contact pin are distributed on both sides of the LED lamp.
[0012] The luminous keycap module as described above comprises a plurality of the contact pin groups, and the plurality of the contact pin groups are diagonally arranged or distributed at the four side corners of the keycap.
[0013] The utility model also provides a keyboard, comprising a keyboard body, on which the above-mentioned luminous keycap module is arranged.
[0014] Implementing the embodiments of the utility model has the following beneficial effects:
[0015] 1. The utility model provides a luminous keycap module, which changes the structure of the traditional keycap, adds an optical microstructure and a lamp cavity on the back of the keycap, and integrates the traditional backlight panel into the light source component in a single keycap, which extends into the lamp cavity through its LED, and the optical microstructure is used to gather the light emitted by the light source, so that the keycap itself has the effect of light transmission and focusing, so that the light source is directly set in the keycap, and the traditional structure of setting the backlight panel under the keycap is eliminated, which is conducive to reducing the overall thickness, and the addition of a contact pin group ensures the conductive connection of the light source circuit board and ensures its stable power supply.
[0016] 2. The utility model also provides a keyboard, which includes the above-mentioned luminous keycap module, so the keyboard also has corresponding beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] 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.
[0018] Figure 1 A schematic structural diagram of a light-emitting keycap module provided by an embodiment of the utility model;
[0019] Figure 2 for Figure 1 A magnified view of part A
[0020] Figure 3 is a schematic diagram of a key cap;
[0021] Figure 4 is a schematic diagram of the optical microstructure distribution;
[0022] Figure 5 This is a schematic diagram of the power supply circuit board;
[0023] Figure 6 This is the circuit diagram of the power supply circuit board. DETAILED DESCRIPTION
[0024] 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.
[0025] like Figures 1 to 4 As shown, an embodiment of the utility model provides a luminous keycap module, including a keycap 1, a light source assembly 3 and a contact pin group 4, the back side 110 of the keycap 1 is provided with an optical microstructure 2, and the back side 110 of the keycap 1 has a lamp cavity 101 recessed toward the surface 111 of the keycap 1, the light source assembly 3 includes a light source circuit board 31 and an LED lamp 32 arranged on the light source circuit board 31, the LED lamp 32 extends into the lamp cavity 101, and the contact pin group 4 is connected to the light source circuit board 31 and extends downward. The utility model provides a luminous keycap module, which changes the structure of a traditional keycap, adds an optical microstructure and a lamp cavity on the back of the keycap, and integrates a traditional backlight panel into a light source component in a single keycap, which extends into the lamp cavity through its LED and the like, and the optical microstructure is used to gather light emitted by the light source, so that the keycap itself has light-transmitting and light-focusing effects, thereby facilitating the direct arrangement of the light source in the keycap, eliminating the traditional structure of arranging the backlight panel under the keycap, which is beneficial to reducing the overall thickness, and adding a contact pin group to ensure the conductive connection of the light source circuit board, thereby ensuring its stable power supply.
[0026] In this solution, the light source circuit board 31 is close to the optical microstructure 2. After the light source circuit board 31 is installed, it is located at the lower side of the optical microstructure 2, and ensures that the LED lamp 32 thereon can extend into the lamp cavity 101, thereby ensuring the lighting effect.
[0027] Specifically, in the embodiment of the utility model, the back side 110 of the keycap 1 is also provided with a hook 5, and the luminous keycap module also includes a scissor support foot 61 and an elastic body 62 connected to the hook 5. In the luminous keycap module, a support plate 71 is also provided on its lower side, a conductive circuit board 72 is provided on the upper side of the support plate 71, and a power supply circuit board 73 is provided on the lower side of the support plate 71. The scissor support foot 61 is connected to the support plate 71, and the support plate 71 is generally an iron plate or a steel plate, and the scissor support foot 61 is equivalent to a movable support, which cooperates with the elastic body 62 to form a support structure that is reset after pressing. Therefore, the scissor support foot 61 supports the keycap 1 so that there is a gap between the keycap 1 and the conductive circuit board 72. Moreover, in order to ensure that the light source assembly in the keycap can remain conductive, the support plate 71 and the conductive circuit board 72 have a notch for the contact pin group 4 to be inserted into and contacted with the power supply circuit board 73.
[0028] Specifically, in the embodiment of the utility model, the contact pin group 4 includes a positive contact pin and a negative contact pin. Taking the positive contact pin as an example, its specific structure is as follows: the positive contact pin includes a needle sleeve 41, an ejector pin 42 disposed in the needle sleeve 41, and a spring 43. The ejector pin 42 has a top end 421 extending outward to the outside of the needle sleeve 41, and the spring 43 abuts against the end of the needle sleeve 41. Since the contact pin group 4 is connected to the light source circuit board 31, and the light source circuit board 31 itself moves up and down as the key cap 1 is pressed and reset, the cooperation of the spring 43 and the ejector pin 42 can make the light source circuit board 31 move up and down and keep in contact with the power supply circuit board 73 at the lower end through the ejector pin 42 and the spring 43 or the needle sleeve 41.
[0029] Of course, the ejector pin 42 can extend from the upper or lower end of the needle sleeve 41. If it extends from the lower end, the top end 421 of the ejector pin 42 contacts the power supply circuit board 73 below, and the spring is located on the other side. In order to better meet the habits of use and maintain the hand feel, the top end 421 extends from the upper side of the needle sleeve 41 and is connected to the light source circuit board 31. One end of the spring 43 abuts against the ejector pin 42, and the other end abuts against the power supply circuit board 73. It can also be seen from the accompanying drawings that the top end 421 extends a distance from the uppermost end of the needle sleeve 41, which can be understood as the distance that the light source circuit board 31 moves downward.
[0030] In the present embodiment, the optical microstructures can be a plurality of convex points protruding downward from the back surface 110 of the key cap 1. Alternatively, the optical microstructures can be a plurality of convex points protruding downward from the back surface 110 of the key cap 1.
[0031] Moreover, the optical microstructure 2 is cylindrical or polygonal, and has a simple structure, and is easy to achieve the effect of refraction and focusing.
[0032] Of course, the optical microstructure 2 is a polygon with a sharp tip, such as a triangle or a rhombus, and the above-mentioned effect can also be achieved through a simple structure.
[0033] In addition, in order to achieve the effect of focusing light at multiple locations in the keycap, the plurality of optical microstructures 2 form a plurality of optical microstructure sets distributed at intervals, which is equivalent to the light emitted from the light source in the lamp cavity 101 being transmitted along the inner layer of the keycap and being gathered on the plurality of optical microstructure sets to form a plurality of concentrated light spots, thereby facilitating the realization of a variety of light effects on the surface of the keycap.
[0034] Specifically, in this embodiment, the optical microstructure set includes a first optical microstructure set 21 distributed along the periphery of the lamp cavity 101, a second optical microstructure set 22 located outside the first optical microstructure set 21 and distributed along the periphery of the back side 110, a third optical microstructure set 23, a fourth optical microstructure set 24, a fifth optical microstructure set 25, a sixth optical microstructure set 26, and a seventh optical microstructure set 27.
[0035] Moreover, in this solution, in order to facilitate manufacturing, the optical microstructure 2 and the lamp cavity 101 are integrally formed with the key cap 1 .
[0036] In the embodiment of the utility model, due to the addition of the stylus group 4, it will inevitably lead to more resistance when pressing the keycap, and in order to make it more balanced and provide the user with a better feel, the stylus group 4 in this solution is close to the corner of the keycap 1 or the positive and negative stylus are distributed on both sides of the LED lamp 32. The corresponding power supply circuit board 73 only needs to set a group of corresponding positive and negative contact points at the corresponding position of each keycap 1.
[0037] Of course, multiple groups of the contact pin groups 4 may be provided, and the multiple groups of the contact pin groups 4 are diagonally arranged or distributed at the four side corners of the key cap 1. The corresponding power supply circuit board 73 also has multiple groups of corresponding positive and negative contact points.
[0038] In this solution, the power supply circuit board 73 is as follows Figure 5 As shown, there are multiple groups of positive and negative contact points 731 corresponding to the stylus group 4, so that multiple groups of luminous keycap modules can share a single power supply circuit board 73. In addition, the circuit diagram corresponding to the power supply circuit board 73 is shown in FIG. Figure 6 As shown, after the power supply is input into the power supply circuit board 73, different resistors are configured according to the current requirements of each group of positive and negative contact points 731 to achieve the current limiting effect. In this scheme, one resistor can control multiple groups of positive and negative contact points 731, or one resistor can control one group of positive and negative contact points 731.
[0039] The embodiment of the utility model further provides a keyboard, comprising a keyboard body, on which the above-mentioned luminous keycap module is arranged. Due to the inclusion of the above-mentioned luminous keycap module, the keyboard also has corresponding beneficial effects.
[0040] The utility model provides a luminous keycap module, which changes the structure of a traditional keycap, adds an optical microstructure and a lamp cavity on the back of the keycap, and integrates a traditional backlight panel into a light source component in a single keycap, which extends into the lamp cavity through its LED and the like, and the optical microstructure is used to gather light emitted by the light source, so that the keycap itself has light-transmitting and light-focusing effects, thereby facilitating the direct arrangement of the light source in the keycap, eliminating the traditional structure of arranging the backlight panel under the keycap, which is beneficial to reducing the overall thickness, and adding a contact pin group to ensure the conductive connection of the light source circuit board, thereby ensuring its stable power supply.
[0041] 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.
[0042] 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 luminous keycap module, characterized in that: The invention comprises a key cap (1), a light source assembly (3) and a contact pin group (4); the back side (110) of the key cap (1) is provided with an optical microstructure (2), and the back side (110) of the key cap (1) has a lamp cavity (101) which is recessed towards a surface (111) of the key cap (1); the light source assembly (3) comprises a light source circuit board (31) and an LED lamp (32) arranged on the light source circuit board (31); the LED lamp (32) extends into the lamp cavity (101); and the contact pin group (4) is connected to the light source circuit board (31) and extends downward.
2. The luminous keycap module according to claim 1, characterized in that: The light source circuit board (31) is close to the optical microstructure (2).
3. The luminous keycap module according to claim 2, characterized in that: The back side (110) of the keycap (1) is also provided with a hook (5), and the luminous keycap module also includes a scissor support foot (61) and an elastic body (62) connected to the hook (5).
4. The luminous keycap module according to claim 3, characterized in that: It also includes a support plate (71), a conductive circuit board (72) arranged on the upper side of the support plate (71), and a power supply circuit board (73) arranged on the lower side of the support plate (71), the scissor support legs (61) are connected to the support plate (71), and the support plate (71) and the conductive circuit board (72) have notches for the contact pin group (4) to be inserted into for contact connection with the power supply circuit board (73).
5. The luminous keycap module according to claim 4, characterized in that: The optical microstructure (2) and the lamp cavity (101) are integrally formed with the key cap (1).
6. The luminous keycap module according to claim 4, characterized in that: The scissor support foot (61) supports the key cap (1) so that a gap exists between the key cap (1) and the conductive circuit board (72); the contact pin group (4) comprises a positive contact pin and a negative contact pin; the positive contact pin comprises a needle sleeve (41), a top pin (42) arranged in the needle sleeve (41), and a spring (43); the top pin (42) has a top end (421) extending outward from the needle sleeve (41); and the spring (43) abuts against a rear end of the needle sleeve (41).
7. The luminous keycap module according to claim 6, characterized in that: The top end (421) extends from the upper side of the needle sleeve (41) and is connected to the light source circuit board (31); one end of the spring (43) abuts against the ejector pin (42), and the other end abuts against the power supply circuit board (73).
8. The luminous keycap module according to claim 6, characterized in that: The contact pin group (4) is close to the corner of the key cap (1) or the positive contact pin and the negative contact pin are distributed on both sides of the LED lamp (32).
9. The luminous keycap module according to claim 6, characterized in that: It comprises a plurality of groups of the contact pin groups (4), and the plurality of groups of the contact pin groups (4) are diagonally arranged or distributed at the four side corners of the key cap (1).
10. A keyboard, characterized in that: It comprises a keyboard body, on which is arranged a luminous keycap module as claimed in any one of claims 1 to 9.