Color-changeable luminous keyboard for notebook computer

Abstract

A middle partition plate is fixedly clamped between an upper thin film circuit board and a lower thin film circuit board to form a thin film circuit board assembly, a plurality of keys are installed on the upper side of the upper thin film circuit board, and elastic contacts located on the upper side of the upper thin film circuit board can be pressed downwards by pressing the keys. The light guide plate is fixedly installed on the keyboard base, the shading film is fixedly attached to the upper side surface of the light guide plate, and the film circuit board assembly is fixedly arranged on the surface of the shading film. A plurality of LED lamps are respectively arranged on the lamp strips fixedly arranged on the periphery of the light guide plate, different LED lamps emit light rays with different colors, the LED lamps on each lamp strip are electrically connected with a color-changing control circuit, the color-changing control circuit can control the LED lamps with different colors on the lamp strips to emit light, and the light-emitting colors of the notebook keyboard can be changed.

Description

Technical Field

[0001] This utility model relates to a keyboard, and more particularly to a color-changing illuminated keyboard for laptops. Background Technology

[0002] Laptop keyboards generally don't have backlighting, making it difficult to see the letters in dimly lit environments. Occasionally, some laptop keyboards do have backlighting, but the light is usually a single color, which doesn't meet the needs of different users. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a color-changing backlit keyboard for laptops, which can change the backlit color of the laptop keyboard according to the user's needs.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a color-changing illuminated keyboard for laptops, including an upper thin-film circuit board, a lower thin-film circuit board, a middle partition, a light guide plate, a light-shielding film, keys, a keyboard base, a light strip, and a color-changing control circuit. The middle partition is fixedly sandwiched between the upper and lower thin-film circuit boards to form a thin-film circuit board assembly. The middle partition has several hollow clearance holes. The upper side of the upper thin-film circuit board has several elastic contacts that are directly opposite the hollow clearance holes on the middle partition. Several keys are detachably fixedly installed on the upper side of the upper thin-film circuit board, and each key covers a corresponding elastic contact. Pressing each key can depress the elastic contact. The elastic contact allows the corresponding conductive point on the upper thin-film circuit board to contact and conduct through the hollow clearance hole on the middle partition with the conductive point on the lower thin-film circuit board. The light guide plate is fixedly installed on the keyboard base, and the light shielding film is fixedly attached to the upper surface of the light guide plate. The light shielding film has a light-transmitting pattern that is directly opposite to the position of each key. The thin-film circuit board assembly is fixedly set on the surface of the light shielding film. Several light strips are fixedly installed around the light guide plate. Each light strip is equipped with several LEDs. Different LEDs emit different colors of light. The LEDs on each light strip are electrically connected to the color-changing control circuit. The color-changing control circuit can control the different colors of LEDs on each light strip to emit light.

[0005] As a further improvement of this utility model, reflective films are also attached to the lower surface and the surrounding surface of the light guide plate. The reflective films allow the light emitted by the LED lamp to enter the light guide plate evenly. The light guide plate and the light-shielding film and reflective film on its surface together form a backlight module.

[0006] As a further improvement of this utility model, the LEDs of different colors on the light strip are connected in parallel to form a color-changing light group. The color-changing control circuit includes a color-changing control module, a Bluetooth transceiver module, and a main control chip. The signal input terminal of the main control chip is electrically connected to the signal output terminal of the Bluetooth transceiver module, thereby realizing wireless control of the main control chip through the Bluetooth transceiver module. The signal output terminal of the main control chip is electrically connected to the signal input terminal of the color-changing control module, and the signal output terminal of the color-changing control module is electrically connected to the signal input terminal of the color-changing light group. The color-changing control module can control the LEDs of different colors on the color-changing light group to emit light, thereby controlling the emitted color.

[0007] As a further improvement of this utility model, each parallel circuit of the color-changing lamp group is also provided with a control switch, and the color-changing control module can control the on and off of each control switch.

[0008] As a further improvement of this utility model, the color-changing control circuit also includes a driving module. The signal output terminal of the main control chip is electrically connected to the signal input terminal of the driving module. The signal output terminal of the driving module is electrically connected to the signal input terminal of the color-changing lamp group. The main control chip can send a brightness value to the driving module. The driving module applies a different driving current to each LED in the plurality of light strips according to the brightness value sent by the main control chip to automatically change the color temperature.

[0009] As a further improvement of this utility model, the keyboard base includes a keyboard base plate and a support frame. The support frame is fixedly installed on the keyboard base plate. The support frame is provided with a number of hollow slots. The backlight module is provided with a number of hook structures below it. The hook structures can be hooked and fixed with the hollow slots on the support frame.

[0010] As a further improvement of this utility model, the upper side of the thin film circuit board assembly is also provided with a bracket mounting plate. The bracket mounting plate has a plurality of light-transmitting holes, and each light-transmitting hole corresponds to a key. Each key includes a keycap and a scissor-type bracket connected below the keycap. The bracket mounting plate has a locking position protruding upward on the outer periphery of each light-transmitting hole for connecting to the bottom end of the scissor-type bracket.

[0011] As a further improvement of this utility model, the scissor-type bracket includes a supporting outer frame and a supporting inner plate. The supporting inner plate is hinged to the inner side of the supporting outer frame. The supporting inner plate has a through hole in the middle that is directly opposite the elastic contact. One end of the supporting outer frame and the supporting inner plate is hinged to the lower surface of the keycap, and the other end of the supporting outer frame and the supporting inner plate is hinged to the bracket mounting plate. The upper end of the elastic contact can contact the lower side of the keycap through the through hole in the middle of the supporting inner plate.

[0012] As a further improvement of this utility model, the LEDs emitting different rays of light are evenly and alternately arranged on the light strip.

[0013] The beneficial technical effects of this utility model are as follows: This utility model sets a light guide plate on the laptop keyboard and sets light strips around the light guide plate. LEDs of different colors are set on the light strips. The color-changing control circuit controls the different colored LEDs to emit light and change the light color of the laptop keyboard, so as to meet the needs of different users. This utility model can also change the brightness of the LEDs to meet the needs of different brightness environments. Attached Figure Description

[0014] Figure 1 This is a diagram showing the usage state of this utility model;

[0015] Figure 2 This is an exploded view of the keyboard of this utility model;

[0016] Figure 3 This is a perspective view of the button of this utility model;

[0017] Figure 4 This is a cross-sectional view illustrating the structural principle of this utility model;

[0018] Figure 5 This is a schematic diagram of the communication principle of this utility model;

[0019] Figure 6 This is the color-changing control circuit diagram of this utility model. Detailed Implementation

[0020] Example: A color-changing illuminated keyboard for laptops includes an upper thin-film circuit board 1, a lower thin-film circuit board 2, a middle partition 3, a light guide plate 4, a light-shielding film 5, keys 6, a keyboard base 7, an LED strip 8, and a color-changing control circuit 9. The middle partition 3 is fixedly sandwiched between the upper thin-film circuit board 1 and the lower thin-film circuit board 2 to form a thin-film circuit board assembly. The middle partition 3 has several perforated clearance holes. The upper thin-film circuit board 1 has several elastic contacts 26 on its upper side that are directly opposite the perforated clearance holes on the middle partition 3. Several keys 6 are detachably fixedly installed on the upper thin-film circuit board 1, with each key 6 covering a corresponding elastic contact 26. Pressing each key 6 depresses the elastic contact 26. Contact 26 allows the corresponding conductive point on the upper thin-film circuit board 1 to contact and conduct through the hollow clearance hole on the middle partition 3 with the conductive point on the lower thin-film circuit board 2. The light guide plate 4 is fixedly installed on the keyboard base 7. The light shielding film 5 is fixedly attached to the upper surface of the light guide plate 4. The light shielding film 5 has a light-transmitting pattern that is directly opposite the position of each key 6. The thin-film circuit board assembly is fixedly set on the surface of the light shielding film 5. Several light strips 8 are fixedly installed around the light guide plate 4. Each light strip 8 is provided with several LEDs. Different LEDs emit different colors of light. The LEDs on each light strip 8 are electrically connected to the color-changing control circuit 9. The color-changing control circuit 9 can control the different colors of LEDs on each light strip 8 to emit light. When using this laptop keyboard, users can turn the keyboard backlighting effect on or off as needed. They can also choose different backlighting effects according to their preferences and environment, such as choosing different colors of light, gradient backlighting effects, or mixed-color backlighting effects. The light strip 8 is located around the edges of the light guide plate 4, which is beneficial for the thin design of the laptop and also makes the light effect more uniform and beautiful.

[0021] A reflective film 10 is attached to the lower and surrounding surfaces of the light guide plate 4. The reflective film 10 ensures that the light emitted by the LEDs enters the light guide plate 4 evenly. The light guide plate 4, along with the light-shielding film 5 and the reflective film on its surface, together form a backlight module. The light is evenly distributed through the reflective film 10, resulting in uniform light emitted outwards, avoiding glare and making the keyboard backlighting effect more aesthetically pleasing.

[0022] The LEDs of different colors on the light strip 8 are connected in parallel to form a color-changing light group. The color-changing control circuit 9 includes a color-changing control module 11, a Bluetooth transceiver module 12, and a main control chip 13. The signal input terminal of the main control chip 13 is electrically connected to the signal output terminal of the Bluetooth transceiver module 12, thereby enabling wireless control of the main control chip 13 through the Bluetooth transceiver module 12. The signal output terminal of the main control chip 13 is electrically connected to the signal input terminal of the color-changing control module 11, and the signal output terminal of the color-changing control module 11 is electrically connected to the signal input terminal of the color-changing light group. The color-changing control module 11 can control the LEDs of different colors on the color-changing light group to emit light, thereby controlling the emitted color.

[0023] The color-changing control module 11 can be controlled via a computer program to change the color, or the keyboard color can be controlled via Bluetooth using a mobile terminal, making it convenient to use.

[0024] Each parallel circuit of the color-changing lamp group is also equipped with a control switch 14, and the color-changing control module 11 can control the on / off state of each control switch 14. The emission color can be changed by controlling the on / off state of the control switches 14 on the different colored LED lamp circuits, which is convenient to control and has a simple circuit structure.

[0025] The color-changing control circuit 9 also includes a drive module 15. The signal output terminal of the main control chip 13 is electrically connected to the signal input terminal of the drive module 15, and the signal output terminal of the drive module 15 is electrically connected to the signal input terminal of the color-changing lamp group. The main control chip 13 can send a brightness value to the drive module 15. The drive module 15 applies a different driving current to each LED in the plurality of light strips 8 according to the brightness value sent by the main control chip 13 to automatically change the color temperature. By changing the color temperature of the LED light, the brightness of the light is adjusted, thus adapting to different lighting conditions in different external environments, making the light softer.

[0026] The keyboard base 7 includes a keyboard base plate 16 and a support frame 17. The support frame 17 is fixedly installed on the keyboard base plate 16. The support frame 17 is provided with a plurality of hollow slots 18. The backlight module is provided with a plurality of hook structures 19 below it. The hook structures 19 can be hooked and fixed with the hollow slots 18 on the support frame 17.

[0027] The upper side of the thin-film circuit board assembly is also provided with a bracket mounting plate 20. The bracket mounting plate 20 has several light-transmitting holes 21, each corresponding to a button 6. Each button 6 includes a keycap and a scissor-type bracket 22 connected below the keycap. A locking slot 27 for connecting to the bottom end of the scissor-type bracket 22 is formed on the bracket mounting plate 20 around the outer periphery of each light-transmitting hole 21. Light can be transmitted through the light-transmitting holes 21 on the bracket mounting plate 20 to the button 6, causing the letters on the button 6 to illuminate.

[0028] The scissor-type bracket 22 includes a supporting outer frame 23 and a supporting inner plate 24. The supporting inner plate 24 is hinged to the inner side of the supporting outer frame 23. The supporting inner plate 24 has a through hole 25 in the middle that is directly opposite to the elastic contact 26. One end of the supporting outer frame 23 and the supporting inner plate 24 is hinged to the lower surface of the keycap, and the other end of the supporting outer frame 23 and the supporting inner plate 24 is hinged to the bracket mounting plate 20. The upper end of the elastic contact 26 can contact the lower side of the keycap through the through hole 25 in the middle of the supporting inner plate 24.

[0029] The LEDs emitting different rays of light on the light strip 8 are evenly and alternately arranged on the light strip 8, which is conducive to the uniform distribution of various colors of light.

Claims

1. A color-changing illuminated keyboard for a notebook computer, characterized in that: The assembly includes an upper thin-film circuit board (1), a lower thin-film circuit board (2), a middle partition (3), a light guide plate (4), a light-shielding film (5), buttons (6), a keyboard base (7), a light strip (8), and a color-changing control circuit (9). The middle partition is fixedly sandwiched between the upper and lower thin-film circuit boards to form a thin-film circuit board assembly. The middle partition has several hollow clearance holes. The upper thin-film circuit board has several elastic contacts on its upper side that are directly opposite the hollow clearance holes on the middle partition. Several buttons are detachably fixedly installed on the upper side of the upper thin-film circuit board. Each button covers a corresponding elastic contact. Pressing each button can press down the elastic contact (26). The elastic contacts allow the corresponding conductive points on the upper thin-film circuit board to contact and conduct through the hollowed-out clearance holes on the middle partition with the conductive points on the lower thin-film circuit board. The light guide plate is fixedly installed on the keyboard base, and the light shielding film is fixedly attached to the upper surface of the light guide plate. The light shielding film has a light-transmitting pattern that is directly opposite to the position of each key. The thin-film circuit board assembly is fixedly set on the surface of the light shielding film. Several light strips are fixedly installed around the light guide plate, and each light strip has several LEDs. Different LEDs emit different colors of light. The LEDs on each light strip are electrically connected to the color-changing control circuit, which can control the different colors of LEDs on each light strip to emit light.

2. The color-changing backlit keyboard for notebook computers according to claim 1, characterized in that: The light guide plate is further fitted with reflective films (10) on its lower and surrounding surfaces. The reflective films allow the light emitted by the LED lamp to enter the light guide plate evenly. The light guide plate and the light-shielding film and reflective film on its surface together form a backlight module.

3. The color-changing backlit keyboard for notebook computers according to claim 1, characterized in that: The LEDs of different colors on the light strip are connected in parallel to form a color-changing light group. The color-changing control circuit includes a color-changing control module (11), a Bluetooth transceiver module (12), and a main control chip (13). The signal input terminal of the main control chip is electrically connected to the signal output terminal of the Bluetooth transceiver module, thereby realizing wireless control of the main control chip through the Bluetooth transceiver module. The signal output terminal of the main control chip is electrically connected to the signal input terminal of the color-changing control module, and the signal output terminal of the color-changing control module is electrically connected to the signal input terminal of the color-changing light group. The color-changing control module can control the LEDs of different colors on the color-changing light group to emit light, thereby controlling the emitting color.

4. The color-changing backlit keyboard for notebook computers according to claim 3, characterized in that: Each parallel circuit of the color-changing lamp group is also equipped with a control switch (14), and the color-changing control module can control the on and off of each control switch.

5. The color-changing backlit keyboard for notebook computers according to claim 3, characterized in that: The color-changing control circuit also includes a driving module (15). The signal output terminal of the main control chip is electrically connected to the signal input terminal of the driving module. The signal output terminal of the driving module is electrically connected to the signal input terminal of the color-changing lamp group. The main control chip can send a brightness value to the driving module. The driving module applies a different driving current to each LED in the multiple light strips according to the brightness value sent by the main control chip to automatically change the color temperature.

6. The color-changing backlit keyboard for notebook computers according to claim 2, characterized in that: The keyboard base includes a keyboard base plate (16) and a support frame (17). The support frame is fixedly installed on the keyboard base plate. The support frame is provided with several hollow slots (18). The backlight module is provided with several hook structures (19) below it. The hook structures can be hooked and fixed with the hollow slots on the support frame.

7. The color-changing backlit keyboard for notebook computers according to claim 1, characterized in that: The upper side of the thin film circuit board assembly is also provided with a bracket mounting plate (20). The bracket mounting plate has a plurality of light-transmitting holes (21). Each light-transmitting hole corresponds to a key. Each key includes a keycap and a scissor-type bracket (22) connected below the keycap. The bracket mounting plate has a locking position (27) protruding upward on the outer periphery of each light-transmitting hole for connecting to the bottom end of the scissor-type bracket.

8. The color-changing backlit keyboard for notebook computers according to claim 7, characterized in that: The scissor-type bracket includes a supporting outer frame (23) and a supporting inner plate (24). The supporting inner plate is hinged to the inner side of the supporting outer frame. The supporting inner plate has a through hole (25) in the middle that is directly opposite the elastic contact. One end of the supporting outer frame and the supporting inner plate is hinged to the lower surface of the keycap, and the other end of the supporting outer frame and the supporting inner plate is hinged to the bracket mounting plate. The upper end of the elastic contact can contact the lower side of the keycap through the through hole in the middle of the supporting inner plate.

9. The color-changing backlit keyboard for notebook computers according to claim 1, characterized in that: The LEDs emitting different rays of light are evenly and alternately arranged on the light strip.

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