Light-emitting keyboard graphite heat dissipation assembly

Abstract

The utility model relates to keyboard graphite heat radiation technical field, concretely relates to a kind of luminous keyboard graphite heat radiation components, including keyboard main body, its keyboard main body one side is provided with cover, keyboard is provided with heat dissipation layer inside, heat dissipation layer is by graphite heat conduction layer, metal heat conduction support layer is constituted, graphite heat conduction layer is fixedly arranged between keyboard circuit board and metal heat conduction support layer, graphite heat conduction layer includes the limiting frame set in keyboard main body, fixed bolt is set on limiting frame, graphite layer is set in limiting frame, the upper surface of graphite layer is compacted by elastic pressing plate, and elastic pressing plate is connected with limiting frame by fixed bolt. Compared with prior art, the application improves the stability of the luminous keyboard in long time working condition.

Description

Technical Field

[0001] This utility model relates to the field of graphite heat dissipation technology for keyboards, and in particular to a graphite heat dissipation component for an illuminated keyboard. Background Technology

[0002] With the trend towards thinner, lighter, and higher-performance electronic devices, backlit keyboards, as an important input component in laptops and peripherals, have been widely used in office and gaming applications. Backlit keyboards typically achieve backlighting by placing LEDs under the keycaps. However, because LEDs generate heat during prolonged operation, and the keyboard circuit board, control chip, and power lines also produce heat, insufficient heat dissipation can easily lead to problems such as LED brightness decay, circuit board component aging, and excessively high keyboard surface temperature, thus affecting the keyboard's lifespan and user experience.

[0003] Currently, most common backlit keyboards use a metal base or thermally conductive silicone pads for passive heat dissipation. However, the thermal conductivity of these structures is limited and easily affected by assembly gaps, resulting in discontinuous heat dissipation paths and noticeable heat accumulation. Furthermore, some structures sacrifice structural strength or light emission uniformity while enhancing heat dissipation, failing to balance mechanical stability and optical performance. Therefore, this invention proposes a graphite heat dissipation component for backlit keyboards to meet the requirement of ensuring stable performance during prolonged operation. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a graphite heat dissipation component for an illuminated keyboard to solve the problem of discontinuous heat dissipation path and obvious heat accumulation.

[0005] To achieve the above objectives, this utility model provides a graphite heat dissipation component for an illuminated keyboard, comprising a keyboard body, a cover plate on one side of the keyboard body, and a heat dissipation layer inside the keyboard. The heat dissipation layer is composed of a graphite thermally conductive layer and a metal thermally conductive support layer. The graphite thermally conductive layer is fixedly disposed between the keyboard circuit board and the metal thermally conductive support layer. The graphite thermally conductive layer includes a limiting frame disposed within the keyboard body, a fixing bolt disposed on the limiting frame, and a graphite layer disposed within the limiting frame. The upper surface of the graphite layer is pressed by an elastic pressure plate, and the elastic pressure plate is connected to the limiting frame by the fixing bolt.

[0006] Preferably, the limiting frame is provided with support ribs on both sides, and the support ribs are distributed in a honeycomb pattern to fix the position of the graphite layer.

[0007] Preferably, a shock-absorbing pad is provided at the edge of the graphite layer. The shock-absorbing pad is made of silicone material and is used to absorb the micro-vibrations of the keyboard during typing.

[0008] Preferably, a metal thermally conductive support layer is disposed below the graphite thermally conductive layer. The metal thermally conductive support layer is composed of a metal thermally conductive plate, which is made of aluminum alloy and is tightly attached to the bottom shell.

[0009] Preferably, a heat dissipation vent is provided on one side of the metal heat-conducting plate, and an air guide groove is provided at the bottom of the metal heat-conducting support layer. The air guide groove extends along the length of the keyboard to guide the internal hot air out along the channel.

[0010] Preferably, a reflective diffusion film may be attached to the upper surface of the graphite thermal conductive layer, and the diffusion film is uniformly distributed with microprism structures to uniformly diffuse the light emitted by the LED.

[0011] The beneficial effects of this utility model are:

[0012] 1. During use, the heat generated by the keyboard circuit board is first rapidly conducted laterally through the graphite layer. The graphite layer has a high thermal conductivity, which can evenly distribute the heat to the entire heat dissipation layer area; it can quickly disperse local heat and prevent the circuit board from degrading due to high temperature; the graphite layer and the metal thermally conductive support layer form a stable heat conduction path, and the metal thermally conductive support layer further transfers the heat to the keyboard base plate and dissipates it outward through the cover plate, thereby effectively reducing the internal temperature of the keyboard body; and improving the heat dissipation uniformity of the keyboard body.

[0013] 2. The graphite layer is supported and constrained at multiple points by the support ribs on both sides of the limiting frame. The honeycomb structure makes the overall force more uniform, thereby effectively fixing the position of the graphite layer and preventing it from shifting during thermal cycling or mechanical vibration. The edges of the graphite layer are flexibly buffered by shock-absorbing pads. The shock-absorbing pads absorb the micro-vibrations generated by the keyboard during typing, effectively reducing the vibration transmission during keyboard typing, reducing the mechanical stress impact on the graphite layer, preventing cracks or delamination of the graphite layer, and thus extending the service life of the heat dissipation components.

[0014] 3. During operation, the heat generated by the internal circuit board and LED light source of this invention is first rapidly conducted through the graphite heat-conducting layer to the underlying metal heat-conducting support layer. The metal heat-conducting support layer is composed of a metal heat-conducting plate made of highly thermally conductive aluminum alloy, which can quickly disperse and conduct heat to the bottom shell. Due to the tight fit between the metal heat-conducting plate and the bottom shell, the high thermal conductivity of the metal heat-conducting plate ensures that heat can be rapidly conducted and diffused, preventing local overheating and allowing heat to diffuse outward efficiently. At the same time, the air guide groove at the bottom of the metal heat-conducting support layer forms an airflow channel inside the keyboard. Hot air flows along the length of the keyboard under the guidance of the air guide groove and is discharged through the heat dissipation vent on the side of the metal heat-conducting plate. The combination of the air guide groove and the heat dissipation vent forms an effective airflow channel, making the heat dissipation process both conductive and convection-based, increasing the speed of heat dissipation, thereby forming a stable convection heat dissipation path inside the structure and achieving continuous airflow cooling of the LED light source and circuit board. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-person perspective schematic diagram of the present invention;

[0017] Figure 2 This is a second-view schematic diagram of the present invention;

[0018] Figure 3 This is a partial cross-sectional view of the metal heat-conducting plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the heat dissipation port of this utility model.

[0020] The components in the diagram are labeled as follows: 1. Keyboard body; 2. Cover plate; 3. Limiting frame; 4. Fixing bolt; 5. Graphite layer; 6. Anti-vibration pad; 7. Support rib; 8. Metal heat-conducting plate; 9. Elastic pressure plate; 10. Heat dissipation vent; 11. Air guide channel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] like Figures 1-4 As shown, a graphite heat dissipation component for an illuminated keyboard includes a keyboard body 1, a cover plate 2 on one side of the keyboard body 1, a heat dissipation layer inside the keyboard body 1, the heat dissipation layer being composed of a graphite heat-conducting layer and a metal heat-conducting support layer, the graphite heat-conducting layer being fixedly disposed between the keyboard circuit board and the metal heat-conducting support layer, the graphite heat-conducting layer including a limiting frame 3 disposed inside the keyboard body 1, a fixing bolt 4 disposed on the limiting frame 3, a graphite layer 5 disposed inside the limiting frame 3, the upper surface of the graphite layer 5 being pressed by an elastic pressure plate 9, the elastic pressure plate 9 being connected to the limiting frame 3 by the fixing bolt 4;

[0024] During use, the heat generated by the keyboard circuit board is first rapidly conducted laterally through the graphite layer 5. The graphite layer 5 has a high thermal conductivity, which can evenly distribute the heat to the entire heat dissipation layer area. It can quickly disperse local heat and prevent the circuit board from degrading due to high temperature. The graphite layer 5 and the metal thermally conductive support layer form a stable heat conduction path. The metal thermally conductive support layer further transfers the heat to the keyboard base plate and dissipates it outward through the cover plate 2, thereby effectively reducing the internal temperature of the keyboard body 1. It improves the heat dissipation uniformity of the keyboard body 1. The limiting frame 3 and the fixing bolt 4 cooperate to fix the position of the graphite layer 5 and prevent it from shifting due to vibration or thermal expansion and contraction. The elastic pressure plate 9 provides continuous clamping force in the structure, so that the graphite layer 5 is tightly attached to the circuit board, ensuring a stable and efficient heat conduction path. It not only improves the heat dissipation and bonding effect, but also plays a role in buffering and shock absorption, thereby extending the service life of the keyboard heat dissipation components and ensuring the stable performance of the illuminated keyboard under long-term working conditions.

[0025] like Figures 1-4As shown, support ribs 7 are provided on both sides of the limiting frame 3. The support ribs 7 are distributed in a honeycomb pattern to fix the position of the graphite layer 5 and enhance the overall structural strength. Anti-vibration pads 6 are provided at the edge of the graphite layer 5. The anti-vibration pads 6 are made of silicone material to absorb the micro-vibrations of the keyboard during typing and prevent the graphite layer 5 from cracking. A reflective diffusion film can be attached to the upper surface of the graphite heat-conducting layer. The diffusion film has a uniformly distributed microprism structure to uniformly diffuse the LED light and improve the light uniformity of the key area.

[0026] The graphite layer 5 is supported and constrained at multiple points by the support ribs 7 on both sides of the limiting frame 3. The honeycomb structure makes the overall force more uniform, thereby effectively fixing the position of the graphite layer 5 and preventing it from shifting during thermal cycling or mechanical vibration. The edge of the graphite layer 5 is flexibly buffered by the anti-vibration pad 6. The anti-vibration pad 6 absorbs the micro-vibrations generated by the keyboard during typing, effectively reducing the vibration transmission during keyboard typing, reducing the mechanical stress impact on the graphite layer 5, and preventing cracks or delamination of the graphite layer 5, thereby extending the service life of the heat dissipation component. At the same time, the reflective diffusion film set above the graphite heat-conducting layer reflects and refracts the light emitted by the LEDs a second time. With the help of the microprism structure on the diffusion film, the light is scattered at multiple angles, making the light emission on the keyboard surface more uniform and soft. This improves the visual appearance and lighting effect, and achieves the comprehensive technical advantages of structural stability, reliable heat dissipation and coordinated light effect.

[0027] like Figures 1-4 As shown, a metal thermally conductive support layer is disposed below the graphite thermally conductive layer. The metal thermally conductive support layer is composed of a metal thermally conductive plate 8, which is made of aluminum alloy and is tightly attached to the bottom shell. A heat dissipation vent 10 is provided on one side of the metal thermally conductive plate 8, and an air guide groove 11 is provided at the bottom of the metal thermally conductive support layer. The air guide groove 11 extends along the length of the keyboard and is used to guide the internal hot air to be discharged along the channel, thereby realizing airflow heat dissipation for the LED light source and the circuit board.

[0028] During operation, the heat generated by the internal circuit board and LED light source of this invention is first rapidly conducted through the graphite heat-conducting layer to the underlying metal heat-conducting support layer. The metal heat-conducting support layer is composed of a metal heat-conducting plate 8, made of highly thermally conductive aluminum alloy, which can quickly disperse and conduct heat to the bottom shell. Because the metal heat-conducting plate 8 is tightly fitted to the bottom shell, its high thermal conductivity ensures rapid heat conduction and diffusion, preventing localized overheating and allowing heat to dissipate efficiently. Simultaneously, the air ducts 11 at the bottom of the metal heat-conducting support layer create airflow within the keyboard. In the channel, hot air flows along the length of the keyboard under the guidance of the air guide 11 and is discharged through the heat dissipation vent 10 on the side of the metal heat-conducting plate 8. The combination of the air guide 11 and the heat dissipation vent 10 forms an effective air circulation channel, so that the heat dissipation process has both heat conduction and convection effects, which improves the speed of heat dissipation. This creates a stable convection heat dissipation path inside the structure, achieving continuous airflow cooling of the LED light source and circuit board. This structural design not only extends the service life of the LED light source and circuit board, but also effectively reduces the surface temperature rise of the keyboard body, maintaining the stability and comfort of the keyboard during long-term operation.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A graphite heat dissipation component for a light-emitting keyboard, comprising a keyboard body (1), characterized in that, A cover plate (2) is provided on one side of the keyboard body (1). A heat dissipation layer is provided inside the keyboard body (1). The heat dissipation layer is composed of a graphite heat-conducting layer and a metal heat-conducting support layer. The graphite heat-conducting layer is fixedly disposed between the keyboard circuit board and the metal heat-conducting support layer. The graphite heat-conducting layer includes a limiting frame (3) disposed inside the keyboard body (1). A fixing bolt (4) is provided on the limiting frame (3). A graphite layer (5) is disposed inside the limiting frame (3). The upper surface of the graphite layer (5) is pressed by an elastic pressure plate (9). The elastic pressure plate (9) is connected to the limiting frame (3) by the fixing bolt (4).

2. The graphite heat dissipation component for a light-emitting keyboard according to claim 1, characterized in that, The limiting frame (3) is provided with support ribs (7) on both sides. The support ribs (7) are distributed in a honeycomb pattern and are used to fix the position of the graphite layer (5).

3. The graphite heat dissipation component for a light-emitting keyboard according to claim 1, characterized in that, A shock-absorbing pad (6) is provided at the edge of the graphite layer (5). The shock-absorbing pad (6) is made of silicone material and is used to absorb the micro-vibrations of the keyboard during the typing process.

4. The graphite heat dissipation component for a light-emitting keyboard according to claim 1, characterized in that, A metal thermally conductive support layer is disposed below the graphite thermally conductive layer. The metal thermally conductive support layer is composed of a metal thermally conductive plate (8), which is made of aluminum alloy and is tightly attached to the bottom shell.

5. A graphite heat dissipation component for a light-emitting keyboard according to claim 4, characterized in that, A heat dissipation port (10) is provided on one side of the metal heat-conducting plate (8), and an air guide groove (11) is provided at the bottom of the metal heat-conducting support layer. The air guide groove (11) extends along the length of the keyboard and is used to guide the internal hot air out along the channel.

6. The graphite heat dissipation component for a light-emitting keyboard according to claim 2, characterized in that, A reflective diffusion film can be attached to the upper surface of the graphite thermal conductive layer. The diffusion film has microprism structures evenly distributed on it to uniformly diffuse the light emitted by the LED.

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