CN2864799Y - Keyboard with backlit architecture - Google Patents

Abstract

A keyboard with backlight structure features that a light source conducting space is formed by a bridge plate under the keyboard part and a bottom plate, so the light source is refracted to the keyboard part via the light guide part on the bridge plate corresponding to the position where the light source is to be emitted to the light source conducting space, resulting in low cost and no need of illuminating the whole keyboard part.

Description

Keyboard with backlit architecture

technical field

The utility model relates to a keyboard with a backlight structure, in particular to a backlight structure capable of emitting light sources to the keyboard part by arranging under the keyboard part.

Background technique

Whether it is a keyboard used by a desktop computer, a laptop computer, a notebook computer, or an Internet TV, in order to provide an ability to clearly see the keyboard and facilitate typing in a low-light or dark environment, there have been existing A variety of luminous keyboard patents have come out, such as U.S. Patent Nos. 6,284,988, 6,322,229, 6,199,996, 6,554,442, and 6,179,432, and Taiwan Publication Nos. The light source is projected outward from the sheet, so that the user can clearly judge the position of the keystroke.

However, in the above-mentioned patent technical documents, it is possible to find out their common points. In each of the patent technical documents, it is sought that only the contact piece and the linkage mechanism are blocked between the light-emitting assembly and the keycap in the keyboard, and most of the patents The keycaps, actuators and linkage mechanisms are made of light-transmitting materials (some patents design the keycaps as non-transparent materials, but the characters and symbols on the keycaps are made of light-transmitting materials), so that the light-emitting components are integrated When the light source is emitted in the same way, the keyboard is in a uniform backlight type, but this light-emitting mode causes users to be troubled. The explanation is as follows:

Because the environment where the user operates the luminous keyboard is mostly a place with insufficient light and relatively dark places, such as low-luminance environments such as airplanes and cars, but the entire keyboard emits light evenly, which will cause the overall brightness to be too strong and affect other people around. In such a low-brightness environment, the user's ability to see the keyboard is greatly reduced. If the entire piece is evenly lit, it is difficult for the user to recognize the character symbols on each keycap, even if the character symbols are made of opaque materials. If the keycap is made of opaque material and the characters are made of light-transmitting material, it will be difficult to identify due to the interference effect of the light source emitted between adjacent keycaps, and it is impossible to remember the keycap if you are not familiar with it. Character symbols will often produce knocking errors and output wrong command signals.

Utility model content

The main purpose of the utility model is to solve the defects in the above-mentioned prior art. In order to avoid the existence of the defects, the utility model provides a keyboard with a backlight structure.

For this reason, according to the keyboard with backlight structure of the present utility model, it is characterized in that the composition unit of the keyboard includes from top to bottom: a keyboard part, which is composed of a plurality of keys, and the keys include a keycap with a symbol on the surface and a connection A linkage mechanism with a keycap and a keycap pressing displacement stroke is provided; a bridge plate is connected to the other end of the linkage mechanism so that the keyboard part is pressed and displaced relative to the bridge plate; a signal touch component includes a circuit board and a keyboard Press the touch part to touch the output signal of the circuit board; wherein, a bottom plate is arranged under the bridge plate, and a light source conduction space is defined between the bottom plate and the bridge plate, and the place where the light source is to be emitted on the corresponding keyboard part of the bridge plate is directed to the light source. The conduction space is provided with at least one light guide part, and the light guide part receives the emitted light source entering the light source conduction space and guides it into the keyboard part, thereby constituting the backlight structure of the keyboard.

Another purpose of the present invention is that the light guide part and the bridge plate can be integrally produced by injection molding, and both the bridge plate and the bottom plate can be provided with a light source refracting surface.

Therefore, adopting the keyboard with backlight structure of the present invention can concentrate the light source to the display of the keyboard part to avoid the defect of the entire keyboard part emitting light, and can effectively limit the actual light source to be emitted by the keyboard part according to the design position and size of the light guide part. scope. In addition, using the refracting surface of the light source can also improve the brightness effect of the emitted light source, reduce the design of the light source component and reduce the cost of the backlight structure.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the appearance of the keyboard of the present utility model;

Fig. 2 is the exploded schematic diagram of partial structure of the keyboard of the present utility model;

Figure 3-1 is a schematic cross-sectional view of the keyboard of the present utility model;

Figure 3-2 is a partially enlarged schematic diagram of Figure 3-1;

Fig. 4 is a schematic diagram of another embodiment of the utility model; and

Fig. 5-1 and Fig. 5-2 are schematic diagrams of the emitting light source of the present invention.

Detailed ways

Relevant detailed description and technical contents of the utility model are as follows in conjunction with the accompanying drawings:

Please refer to Figure 1, Figure 2, Figure 3-1 and Figure 3-2, as shown in the figure: the utility model is a keyboard 10 with a backlight structure, and the components of the keyboard 10 include a keyboard part from top to bottom 101, which is composed of a plurality of keys 11, and the key 11 includes a key cap 111 with a symbol 1111 on its surface and a linkage mechanism 112 that is connected to the key cap 111 and provides the pressing displacement stroke of the key cap 111, as shown in the embodiment The linkage mechanism 112 is a scissors-type linkage mechanism 112, and the other end of the linkage mechanism 112 is connected with a bridge plate 12 to provide the pressing displacement of the keyboard portion 101 relative to the bridge plate 12, and the keyboard portion 101 is arranged below There is a signal trigger component 13, which includes a circuit board 131 and a trigger 132 that is pressed by the keyboard portion 101 to trigger the circuit board 131 to output a signal. Base plate 14, a light source conduction space 20 is defined between the base plate 14 and the bridge plate 12, and a light source conduction space 20 is provided on the bridge plate 12 corresponding to the place where the light source is to be emitted on the keyboard portion 101 (for example, symbol 1111). At least one light guide part 121 receives the light sources 30 a , 30 b entering the light source conducting space 20 and guides them into the keyboard part 101 , thereby constituting the backlight structure of the keyboard 10 .

The shape of the light guide part 121 can be designed as a cylinder as shown in FIG. 3-2 or a polygon as shown in FIG. Or the photosensitive layer 123 to enhance the light source absorption or increase the light source refraction reaction. In addition, the other end of the light guide part 121 also has a collection (convergence) or divergence light source and output to the light emitting part 122 of the keyboard part 101. If it is a collection Light (concentrating) design, then can simply emit the light source corresponding to the symbol 1111 position on the keycap 111, the symbol 1111 position then can be a hollow design or be transparent so that the light source is emitted so that the user can clearly distinguish; if it is a divergent light source design, the light source can only be projected to the range of the keycap 111, and the keycap 111 is made of transparent material at this time, and no matter which light source is emitted, the single keycap 111 is allowed to emit light, and the keycap 111 and The area between the keycaps 111 does not generate light sources, thereby effectively preventing the overall light source from being too bright and helping the user to clearly determine where the keys 11 are tapped; in addition, the light guide part 121 is designed to extend to the bottom plate 14, in addition to providing In addition to the refraction effect of the light source, it also provides the effect of auxiliary supporting the bridge plate 12 to achieve stable positioning.

In addition, as shown in Figure 5-1 and Figure 5-2, since the utility model provides a light source conduction space 20, the emission light sources 30a, 30b do not need to be set up with integral light-emitting components, as shown in Figure 5-1, as long as The emitting light source 30a is arranged around the keyboard portion 101, or as shown in FIG. Yes, and the emitting light sources 30a, 30b can also be connected with a power switch 31 to the outside of the keyboard 10, and in order to further enhance the reflection effect of the emitting light sources 30a, 30b, the utility model is further designed to effectively brighten the interior of the light source conducting space 20 brightness, the method can adopt at least one side of the bottom surface of the bridge plate 12 and the surface of the bottom plate 14 located in the light source conduction space 20 as the light source refraction surface (if the circuit board 131 is arranged in the light source conduction space 20, then it is located in the light source conduction space At least one of the bottom surface of the bridge plate 12 and the surface of the circuit board 131 of 20 is a light source refracting surface; or the touch piece 132 is connected to a thin film plate (MYLAR) in multiples, and the thin film plate is arranged in the light source conducting space 20, Then at least one of the bottom surface of the bridge plate 12 and the surface of the film plate located in the light source conducting space 20 is the light source refracting surface), and after the emitting light sources 30a, 30b enter the light source conducting space 20, the light source refracting surface can be effectively used to increase the brightness; but if the emitting light source 30a, 30b have sufficient brightness, and in order to prevent external light from possibly affecting or preventing the light source in the light source conduction space 20 from being improperly upward and causing interference, the bottom surface of the bridge plate 12 and the surface of the bottom plate 14 located in the light source conduction space 20 can be indefinitely The light-transmitting shielding surface ensures that the emitting light sources 30a and 30b in the light-transmitting space 20 only emit light from the light-guiding portion 121 to the keyboard portion 101 .

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (12)

1. keyboard (10) that possesses framework backlight is characterized in that the component units of described keyboard (10) from top to bottom includes:

One keypad portion (101), be made up of a plurality of buttons (11), described button (11) includes the keycap (111) and that a surface possesses symbol (1111) interlinked mechanism (112) of establishing described keycap (111) and providing described keycap (111) to push displacement stroke is provided;

One bridge plate (12), another termination that supplies described interlinked mechanism (112) is if the described relatively bridge plate of described keypad portion (101) (12) is pushed displacement;

One signal triggering component (13) includes a circuit board (131) and and pushed to touch the touch part (132) of circuit board (131) output signal by described keypad portion (101);

Wherein, described bridge plate (12) below also disposes a base plate (14), then define light source conduction space (20) between described base plate (14) and the bridge plate (12), and on the corresponding described keypad portion of described bridge plate (12) (101), desire to send the light source place and be provided with at least one light guide section (121), receive with described light guide section (121) and enter the transmitting illuminant (30a, 30b) in the described light source conduction space (20) and be directed into keypad portion (101) and constitute the framework backlight of described keyboard (10) to described light source conduction space (20).

2. the keyboard (10) that possesses framework backlight according to claim 1 is characterized in that: bridge plate (12) bottom surface and base plate (14) surface that are positioned at described light source conduction space (20) at least simultaneously are the light source plane of refraction.

3. the keyboard (10) that possesses framework backlight according to claim 1 is characterized in that: bridge plate (12) bottom surface and base plate (14) surface that are positioned at described light source conduction space (20) are the lighttight face that covers.

4. the keyboard (10) that possesses framework backlight according to claim 1, it is characterized in that: described circuit board (131) is to be configured in the described light source conduction space (20), then be positioned at bridge plate (12) bottom surface and circuit board (131) surface in described light source conduction space (20), one side is the light source plane of refraction at least.

5. the keyboard (10) that possesses framework backlight according to claim 1, it is characterized in that: described touch part (132) is a plurality of thin webs (MYLAR) that are connected to, and described thin web is to be configured in the described light source conduction space (20), then be positioned at bridge plate (12) bottom surface and the thin web surface in described light source conduction space (20), one side is the light source plane of refraction at least.

6. according to claim 1,2,3, the 4 or 5 described keyboards (10) that possess framework backlight, it is characterized in that: the other end of described light guide section (121) has more and has a set or disperse light source and export the light portion of penetrating (122) of described keypad portion (101) to.

7. according to claim 1,2,3, the 4 or 5 described keyboards (10) that possess framework backlight, it is characterized in that: also possess on the described light guide section (121) photographic layer (123) is arranged.

8. according to claim 1,2,3, the 4 or 5 described keyboards (10) that possess framework backlight, it is characterized in that: described transmitting illuminant (30a) is to be configured in described keypad portion (101) ambient side.

9. according to claim 1,2,3, the 4 or 5 described keyboards (10) that possess framework backlight, it is characterized in that: described light guide section (121) is to extend the described base plate of crimping (14) with auxiliary bridge plate (12) strong fix.

10. according to claim 1,2,3, the 4 or 5 described keyboards (10) that possess framework backlight, it is characterized in that: described transmitting illuminant (30b) is to be configured in described keypad portion (101) below and to be positioned at described light source conduction space (20).

11. the keyboard (10) that possesses framework backlight according to claim 10 is characterized in that: described transmitting illuminant (30b) is to be configured in the described light source conduction space (20) with the sheet illuminating part.

12. the keyboard (10) that possesses framework backlight according to claim 1 is characterized in that: described transmitting illuminant (30a, 30b) is can be connected with a power switch (31) to described keyboard (10) outside.

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