TW201911356A - Luminous keyboard - Google Patents

Abstract

The present invention discloses a luminous keyboard includes a keycap having a light outputting zone and a luminous module. The luminous module includes a light emitting element for generate a light beam, a light guiding plate and an anti blue light film, and the light guiding plate is cover with the anti blue light film. When the light beam from the light emitting element enters the light guiding plate, the light beam is guided to pass through the anti blue light film and projected to the light outputting zone such that the luminous keyboard is luminous. The blue light part of the light beam can be filtered by the anti blue light film. Therefore, the luminous keyboard will not cause damage to the user's eyes.

Description

 Illuminated keyboard  

The present invention relates to an input device, and more particularly to an illuminated keyboard having a lighting function.

Common computer peripheral input devices include a mouse, a keyboard, and a trackball. The keyboard can directly input characters and symbols to the computer, and thus is highly valued by users and input device manufacturers. The subject of this case is the keyboard.

Please refer to FIG. 1 , which is a schematic diagram of the appearance of a conventional keyboard. The surface of the conventional keyboard 1 has a plurality of buttons 10, which are classified into a general button 101, a numeric button 102, and a function button 103, etc., which are used by the user to generate a corresponding signal to the computer by finger pressure. The computer performs the pressed key function, for example, the general key 101 is used to input symbols such as English letters, the numeric key 102 is used to input numbers, and the function keys 103 are used to provide various functions, such as F1~F12. The conventional keyboard 1 is a keyboard for a notebook computer.

With the evolution of technology, keyboard manufacturers are committed to the development of a variety of keyboards with special features to meet the needs of different users, among which the illuminated keyboard is most popular with users. Next, the internal structure of a conventional illuminated keyboard will be described. Please refer to FIG. 2 , which is a cross-sectional view showing the structure of a conventional illuminated keyboard. The conventional illuminated keyboard 2 includes a plurality of buttons 20 (only one is shown in FIG. 2), a membrane switch circuit 21, a light guide plate 22, a light-emitting element 23, a support plate 24, and a power supply circuit board 25, and the button 20 includes a button cap 201 and a scissors type. The connecting element 202 and the elastic element 203 are connected. In the conventional illuminated keyboard 2, the above-mentioned components are arranged from top to bottom in the order of the button cap 201, the scissor-type connecting member 202, the elastic member 203, the membrane switch circuit 21, the light guide plate 22, and the support plate 24, and the light-emitting element 23 and the power supply. The circuit board 25 is located on one side of the membrane switch circuit 21. Among them, the conventional illuminated keyboard 2 is a keyboard for a notebook computer (not shown).

In the button 20, the button cap 201 is exposed outside the conventional keyboard 2 and can be pressed by the user. The scissor-type connecting member 202 is used to connect the button cap 201 and the support plate 24, and the elastic member 203 passes through the scissor-type connecting member 202. And contacting the button cap 201 and the membrane switch circuit 21, respectively. The membrane switch circuit 21 located at the elastic member 203 can be abutted by the elastic member 203 to generate a button signal. The power supply circuit board 25 is located on one side of the membrane switch circuit 21, and the light-emitting element 23 is disposed on the power supply circuit board 25 such that the light beam B generated by the light-emitting element 23 can be projected into the light guide plate 22, and the light guide plate 22 can guide the light beam B. Projected to the button cap 201. The light-emitting element 23 is a lateral light-emitting diode.

In FIG. 2, the button cap 201 has a light transmissive area 2011 which is exposed on the upper surface of the button cap 201, that is, the light transmissive area 2011 is the text displayed on the button cap 201. On the other hand, the light guide plate 22 has a light guide dot 221, and the light guide dot 221 is located below the light-transmitting region 2011 corresponding to the light-transmitting region 2011. When the light beam B generated by the light-emitting element 23 is projected into the light guide plate 22, the light beam B is totally reflected in the light guide plate 22. When the light beam B is projected to the light guiding mesh point 221, the light guiding mesh point 221 can destroy the total reflection of the light beam B and guide the light beam B to be projected to the light transmitting region 2011 of the button cap 201, so that the light transmitting region 2011 produces a light emitting effect.

However, when the blue component contained in the light beam is incident on the user's eyes, it may cause damage to the eyes, and if it is serious, it may cause irreversible macular lesions in the eyes. Therefore, there is a need for an illuminated keyboard that avoids eye damage.

It is an object of the present invention to provide an illuminated keyboard that avoids eye damage.

In a preferred embodiment, the present invention provides an illuminated keyboard including at least one button cap, a support panel, and a backlight module, the at least one button cap being exposed outside the illuminated keyboard, and the at least one button cap having at least A light transmissive area. The support plate is located below the at least one button cap. The backlight module is disposed on the support board or below the support board for generating a light beam and projecting to the at least one light transmissive area, the backlight module includes a light emitting component, a light guide plate and an anti-blue film . The light-emitting element is configured to generate the light beam, and the light guide plate is disposed on the support plate or below the support plate for guiding the light beam projected into the light guide plate to project the light beam to the light-transmitting region. The anti-blue light film covers the light guide plate for filtering the blue light component of the light beam when the light beam passes through the anti-blue light film.

In a preferred embodiment, the present invention also provides an illuminated keyboard comprising at least one button cap, a support panel, and a backlight module. The at least one button cap is exposed outside the illuminating keyboard, and the at least one button cap has a light transmitting region, and the light transmitting region is disposed on the at least one button cap. The support plate is disposed under the at least one button cap, and the backlight module is disposed on the support plate or below the support plate for generating a light beam and projecting to the light transmissive area. The at least one button cap includes a blue light blocking material, so that the light transmissive region of the at least one button cap can filter the blue component in the light beam.

In a preferred embodiment, the at least one button cap is formed by mixing a blue light blocking material with a plastic material, and is formed by an injection molding technique, so that the light transmissive region of the at least one button cap can filter the blue component of the light beam. .

In a preferred embodiment, the at least one button cap is formed by a two-shot injection molding technique using a plastic material and a blue light blocking material, and the light transmissive region is formed by a blue light blocking material, so that the at least one button cap is The light transmissive region filters the blue light component of the beam.

In a preferred embodiment, the at least one button cap is coated with a light transmissive paint, and the light transmissive paint is composed of a light transmissive paint mixed with a blue light blocking material, so that the light transmissive region of the at least one button cap The blue light component of the beam can be filtered.

Briefly, the illuminated keyboard of the present invention is provided with a blue light-resistant film in the backlight module or a blue light blocking material added to the button cap, such as a mixed plastic material, a blue light blocking material or a mixed light transparent paint, and a blue light blocking material. Thereby, the light beam projected to the button cap can be filtered to filter blue light. Therefore, the illuminated keyboard of the present invention protects the eyes of the user to solve the problems of the prior art.

1‧‧‧ keyboard

2, 3, 4‧‧‧ illuminated keyboard

10, 20‧‧‧ button

21‧‧‧Metal switch circuit

22,313,413‧‧‧Light guide plate

23, 312, 412‧‧‧Lighting elements

24, 36, 46‧‧‧ support plates

25, 311, 411‧‧‧ power supply circuit board

32, 42‧‧‧ button cap

31, 41‧‧‧ backlight module

33, 43‧‧‧Connecting components

34, 44‧‧‧ Trigger components

35, 45‧‧‧Switch circuit board

101‧‧‧General keys

102‧‧‧number keys

103‧‧‧ function keys

221‧‧‧Light guides

314‧‧‧Anti-blue film

315, 414‧‧ ‧reflecting elements

316, 415‧‧ ‧ shading elements

321, 421, 2011 ‧ ‧ light transmission area

322, 422‧‧‧Light-transmitting paint

323, 423‧‧‧Light curing paint

361‧‧‧ support plate opening

3131‧‧‧Light guide plate opening

B‧‧‧beam

FIG. 1 is a schematic diagram showing the appearance of a conventional keyboard.

2 is a schematic cross-sectional view showing the structure of a conventional illuminated keyboard.

3 is a cross-sectional view showing the structure of the illuminated keyboard of the present invention in the first preferred embodiment.

4 is a schematic top view showing the structure of the button cap of the illuminated keyboard of the present invention in the first preferred embodiment.

Figure 5 is a cross-sectional view showing the structure of the illuminated keyboard of the present invention in a second preferred embodiment.

Figure 6 is a schematic top plan view of the button cap of the illuminated keyboard of the present invention in a second preferred embodiment.

In view of the problems caused by the prior art, the present invention provides an illuminated keyboard that solves the problems of the prior art. Please refer to FIG. 3. FIG. 3 is a cross-sectional view showing the structure of the illuminated keyboard of the present invention in a first preferred embodiment. The illuminating keyboard 3 of the present invention comprises a backlight module 31, a plurality of button caps 32, a plurality of connecting elements 33, a plurality of elastic members 34, a switch circuit board 35 and a support plate 36. The plurality of button caps 32 are exposed outside the illuminating keyboard 3 thereof. For the user to move by finger pressure, the switch circuit board 35 generates a corresponding button signal, and the button signal can be transmitted to the electronic device connected thereto (for example, a notebook computer), so that the electronic device performs touch Press the button function. The button cap 32 has a plurality of light transmissive regions 321 , and the plurality of light transmissive regions 321 are displayed on the upper surface of the button cap 32 . In the preferred embodiment, the plurality of light transmissive regions 321 are formed on the upper surface of the button cap 32 by laser engraving techniques.

Please refer to FIG. 3 and FIG. 4 simultaneously. FIG. 4 is a schematic top view of the button cap of the illuminated keyboard of the present invention in a first preferred embodiment. The plurality of transparent areas 321 of the button cap 32 are displayed in the shape of the character "R" and the character "work". Wherein, the button cap 32 is sequentially coated with a light-transmitting paint 322, an opaque paint (not shown in the figure), and a light-curing paint 323 from bottom to top, and the light-opaque paint is covered by the light-curable paint 323. Therefore, it is not shown in the figure. The light-transmitting region 321 is formed by removing the opaque paint on the button cap 32 and the photo-curing lacquer 323, that is, the light-transmitting region 321 is coated with only the light-transmitting paint 322, so that the light-transmitting region 321 can pass the light. It has a light transmission effect.

The support plate 36 is located below the plurality of button caps 32 and can carry a plurality of button caps 32, a plurality of connecting members 33, a plurality of triggering members 34, and a switch circuit board 35 thereon. The support plate 36 has a plurality of support plate openings 361, and each support plate opening 361 corresponds to a light transmitting region 321 . The connecting member 33 is coupled to the corresponding button cap 32 and the support plate 36 to secure the button cap 32 to the support plate 36 and to move the button cap 32 up and down relative to the support plate 36. The triggering element 34 is located below the corresponding button cap 32, which can be deformed by the moving button cap 32. The switch circuit board 35 is located below the trigger component 34 and functions to be triggered by the trigger component 34 to output a corresponding button signal. The support plate 36 is disposed below the switch circuit board 35 and is coupled to the connection member 33, which can carry the switch circuit board 35 thereon. In the preferred embodiment, the connecting member 33 is a scissor connecting member, and the trigger member 34 is an elastic rubber body, and the switch circuit board 35 is a membrane switch circuit.

In FIG. 3, the backlight module 31 is disposed below the support plate 36, and functions to generate the light beam B and project the light beam B to the light-transmitting region 321. The backlight module 31 includes a power supply circuit board 311, a light-emitting element 312, a light guide plate 313, a blue light-resistant film 314, and a reflective element 315. The light-emitting component 312 is disposed under the button cap 32 and disposed on the power supply circuit board 311. The light-emitting component 312 can be mounted thereon and electrically connected to the light-emitting component 312 to generate a light beam B according to the power provided by the power supply circuit board 311. . The light guide plate 313 is disposed under the button cap 32 to guide the light beam B to the button cap 32, and the light guide plate 313 has a light guide plate opening 3131 corresponding to the light emitting element 312 for the corresponding light emitting element 312 to extend into the light guide plate. In the opening 3131, the light beam B generated by the light-emitting element 312 is projected into the light guide plate 313. The light guide plate 313 is internally provided with a light guiding element such as a light guiding dot or a light guiding microstructure, and its function is the same as that of the light guide plate of the prior art, and therefore will not be described again and is not shown in the figure. In the preferred embodiment, the light-emitting element 312 is a lateral light-emitting diode, and the power supply circuit board 311 can be a flexible circuit board (FPC).

In the backlight module 31, the anti-blue film 314 covers the light guide plate 313, and filters the blue light component in the light beam B when the light beam B passes through the anti-blue film 314. The reflective element 315 is disposed on the lower surface of the light guide plate 313, and can reflect the light beam B away from the light guide plate 313, so that the light beam B enters the light guide plate 313 again, and the use efficiency of the light beam B can be improved. In addition, the blue film 314 has a light-shielding element 316 disposed on the upper surface of the anti-blue film 314 and disposed away from the light-transmissive region 321 , that is, the light-shielding element 316 is not located directly below the light-transmitting region 321 . The beam B is shielded where no light is transmitted, and the beam B is projected to where it is desired to be illuminated, such as the light transmissive region 321 . In short, the illuminated keyboard 3 of the present invention uses a blue light-resistant film 314 including a light-shielding member 316 instead of the conventional light-shielding sheet. In the preferred embodiment, the reflective element 315 can be a reflective ink applied to the lower surface of the light guide plate 313, or a reflective sheet, and the light blocking member 316 is an ink partially applied to the upper surface of the blue light-resistant film 314. .

Next, the operation of the button cap 32 being pressed is briefly explained: when the user touches the button cap 32, the button cap 32 moves downward relative to the support plate 36, so that the connecting member 33 is pushed against and swings, and moves downward. The button cap 32 pushes against the triggering element 34, causing the triggering element 34 to be abutted and deformed and triggering the switch circuit board 35 to generate a corresponding button signal. When the user no longer touches the button cap 32, the button cap 32 moves upward relative to the support plate 36 in response to the elastic force generated by the recovery of the triggering member 34 by the deformation state, so as to push the button cap 32 upward. At the same time, the connecting member 33 is swung, so that the button cap 32 can be restored to the position before being pressed.

When the light-emitting element 312 is driven to generate the light beam B, the light beam B is projected into the light guide plate 313 and totally reflected inside the light guide plate 313. Thereafter, the light guide plate 313 can guide the light beam B to avoid the light-shielding element 36. The anti-blue film 314, the support plate opening 361 of the support plate 36, and the switch circuit board 35 are sequentially passed to be projected to the light transmitting region 321 of the button cap 32. On the other hand, the light beam B exiting from the light guide plate 313 can be reflected by the reflective element 315, so that the light beam B can enter the light guide plate 313 again, and is projected to the light-transmitting region 321 of the button cap 32 by the guiding of the light guide plate 313. . Therefore, the light-transmitting region 321 of the button cap 32 can produce a light-emitting effect, and the blue light component in the light beam B has been filtered out without damaging the user's eyes.

The light guide plate 313 of the preferred embodiment is disposed below the support plate 34, which is for illustrative purposes only, and is not limited thereto. In fact, the light guide plate can also be disposed above the support plate according to requirements, and the support plate does not need to provide a corresponding support plate opening for the light beam to pass. Secondly, the fixing manner of the button cap is not limited to the use of the scissors connecting component, and other types of connecting components or magnetic structures may be used to fix the button cap and the button cap can be moved relative to the support plate. Thirdly, the light-shielding element 315 and the reflective element 316 in the backlight module 31 can be set according to actual requirements, and the light-shielding element 315 and the reflective element 316 are not limited to the necessary components of the backlight module.

Further, the present invention further provides a second preferred embodiment different from the above. Please refer to FIG. 5 and FIG. 6. FIG. 5 is a cross-sectional view showing the structure of the illuminated keyboard of the present invention in a second preferred embodiment, and FIG. 6 is a button cap of the illuminated keyboard of the present invention in the second preferred embodiment. The structure is schematic. The illuminating keyboard 4 includes a backlight module 41, a plurality of button caps 42, a plurality of connecting components 43, a plurality of triggering components 44, a switch circuit board 45, and a support plate 46, and the button cap 42 has a plurality of transparent regions 421, wherein the plurality of transparent regions 421 For example, the character "R" and the character "work" are as shown in FIG. 5. The structure and function of the components of the illuminating keyboard 4 are substantially the same as those of the illuminating keyboard 3 of the preferred embodiment, and the same points are not described again, and the difference between the two is two. First, the backlight module 41 The structure. Second, the structure of the button cap 42.

As shown in FIG. 5, the backlight module 41 of the preferred embodiment is disposed above the support board 46, and includes a power supply circuit board 411, a light-emitting element 412, a light guide plate 413, a light-shielding element 414, and a reflective element 415. The function of the light-emitting element 412 is to generate the light beam B, and the light guide plate 413 is disposed below the button cap 42 and on the support plate 43 to guide the light beam B to the button cap 42. The power supply circuit board 411 is disposed on the side of the light guide plate 413 and carries the light-emitting element 412 thereon, so that the light beam B generated by the light-emitting element 412 can be projected into the light guide plate 413 from the side of the light guide plate 413. The reflective element 415 is disposed on the lower surface of the light guide plate 413, and the light shielding element 414 is disposed on the upper surface of the light guide plate 413. The functions of the components in the backlight module 41 are the same as those of the foregoing preferred embodiment. The only difference is the location of each component.

Next, the structure of the button cap 42 will be described. 6 shows a button cap 42 and a plurality of light transmissive regions 421, wherein the light transmissive region 421 is displayed in the shape of the character "R" and the character "work". The button cap 42 is sequentially coated with a light transmissive paint 422, an opaque paint (not shown), and a photocurable paint 423 from the bottom up, and the light transmissive region 421 is coated with only the light transmissive paint 422. Therefore, the light transmitting region 421 can pass light and has a light transmitting effect. The button cap 42 of the preferred embodiment is different from the button cap 32 of the preferred embodiment in that the light-transmitting paint 422 of the preferred embodiment is composed of a light-transmitting paint mixed with a blue light blocking material. The light transmissive area 421 of the button cap 42 filters the blue light component of the beam B. In other words, the blue light filtering function of the illuminated keyboard 4 of the preferred embodiment is provided by the button cap 42.

In addition, since the button cap is made of a plastic material, the illuminated keyboard of the present invention further provides a blue light filtering function by using a button cap containing a blue light blocking material. Actually, the following two methods can be used: In the first method, the plastic material of the button cap can be mixed with the blue light blocking material, and the button cap is formed by the injection molding technology, so that the light-transmitting region of the button cap can filter the blue component in the light beam. In the second method, the plastic material of the button cap and the blue light blocking material can form a button cap by the double material injection molding technology, and the light transmission region of the button cap is formed by the blue light blocking material, so the light transmitting region can filter the blue component in the light beam. . The two methods can be applied to the case where the button cap is coated with a light-transmitting paint.

According to the above, the illuminated keyboard of the present invention is provided with a blue light-resistant film in the backlight module or a blue light blocking material, such as a mixed plastic material, a blue light blocking material or a mixed light transparent paint, and a blue light blocking material. Thereby, the light beam projected to the button cap can be filtered to filter blue light. Therefore, the illuminated keyboard of the present invention protects the eyes of the user to solve the problems of the prior art.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent changes or modifications made without departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.

Claims (16)

 An illuminated keyboard includes: at least one button cap exposed outside the illuminated keyboard, and the at least one button cap has a light transmissive area; a support plate located below the at least one button cap; and a backlight module, The light-emitting component is disposed on the support plate or below the support plate for generating a light beam, and the light-emitting component is configured to generate the light beam; a light beam projected onto the light guide plate to guide the light beam projected into the light guide plate to project the light beam to the light transmitting region; and a blue light resistant film covering the light guide plate for passing the light beam In the case of the blue light resistant film, the blue light component in the light beam is filtered.    The illuminating keyboard of claim 1, wherein the backlight module further comprises a power supply circuit board located below the light guide plate for carrying the light-emitting element and electrically connected to the light-emitting element; The light guide plate has a light guide plate opening, and the light emitting element extends into the opening of the light guide plate, so that the light beam can be projected into the light guide plate.    The illuminating keyboard of claim 1, wherein the backlight module further comprises a reflective component disposed on a lower surface of the light guide plate for reflecting the light beam away from the light guide plate, so that the light beam is again Enter the light guide plate.    The illuminating keyboard of claim 1, wherein the anti-blue film further comprises a shading element disposed on the upper surface of the anti-blue film for shielding the light beam to project the light beam to the at least one Light transmission area.    The illuminating keyboard of claim 1, further comprising: a switch circuit board disposed on the support board for outputting a corresponding one of the button signals according to the movement of at least one of the button caps; at least one connection An element is disposed between the at least one button cap and the support plate for connecting the at least one button cap to the support plate, and moving the at least one button cap relative to the support plate; and at least one trigger component, Located between the at least one button cap and the switch circuit board for triggering the switch circuit board by the at least one button cap.    The illuminating keyboard of claim 5, wherein the at least one button cap is formed by mixing a blue light blocking material with a plastic material, and is formed by an injection molding technique, so that the light transmissive area of the at least one button cap can be Filter the blue light component of the beam.    The illuminating keyboard of claim 5, wherein the at least one button cap is formed by a two-shot injection molding technique using a plastic material and a blue light blocking material, and the light transmissive region is formed by a blue light blocking material. The light transmissive region of the at least one button cap filters the blue light component of the light beam.    The illuminated keyboard of claim 5, wherein the at least one button cap is coated with a light transmissive paint, and the light transmissive paint is composed of a light transmissive paint mixed with a blue light blocking material, so that the at least one The light transmissive area of the button cap filters the blue light component of the beam.    An illuminated keyboard comprising: at least one button cap exposed outside the illuminated keyboard, wherein the at least one button has a light transmissive area; a support plate located below the at least one button cap; and a backlight module Forming a light beam on the support plate or below the support plate, and projecting to the light-transmitting region; wherein the at least one button cap comprises a blue light blocking material, so that the at least one button cap is transparent to the light The area filters the blue light component of the beam.    The illuminating keyboard of claim 9, wherein the backlight module comprises: a light emitting component for generating the light beam; and a light guide plate disposed on the support plate for guiding projection into the light guide plate The light beam is projected to the light-transmitting region; and a power supply circuit board is disposed under the light guide plate for carrying the light-emitting element and electrically connected to the light-emitting element; and the light guide plate has a light guide plate The light-emitting element protrudes into the opening of the light guide plate, so that the light beam can be projected into the light guide plate.    The illuminating keyboard of claim 10, wherein the backlight module further comprises a reflective component disposed on a lower surface of the light guide plate for reflecting the light beam away from the light guide plate, so that the light beam is again Enter the light guide plate.    The illuminating keyboard of claim 10, further comprising a shading element disposed on the light guide plate for shielding the light beam to project the light beam to the light transmissive area.    The illuminating keyboard of claim 9, further comprising: a switch circuit board disposed on the support plate for outputting a corresponding one of the button signals according to the movement of at least one of the button caps; at least one connection An element is disposed between the at least one button cap and the support plate for connecting the at least one button cap to the support plate, and moving the at least one button cap relative to the support plate; and at least one trigger component, Located between the at least one button cap and the switch circuit board for triggering the switch circuit board by the at least one button cap.    The illuminating keyboard of claim 9, wherein the at least one button cap is formed by mixing a blue light blocking material with a plastic material, and is formed by an injection molding technique, so that the light transmissive area of the at least one button cap can be Filter the blue light component of the beam.    The illuminating keyboard of claim 9, wherein the at least one button cap is formed by a two-shot injection molding technique using a plastic material and a blue light blocking material, and the light transmissive region is formed by a blue light blocking material. The light transmissive region of the at least one button cap filters the blue light component of the light beam.    The illuminating keyboard of claim 9, wherein the at least one button cap is coated with a light transmissive paint, and the light transmissive paint is composed of a light transmissive paint mixed with a blue light blocking material, so that the at least one The light transmissive area of the button cap filters the blue light component of the beam.