CN200961844Y - Backlit structure of the keyboard - Google Patents

Abstract

The utility model relates to a keyboard's structure in a poor light, including: the light-emitting unit is positioned right below the keycap and used for irradiating the generated light to the right below the keycap; through the configuration mode, a bright outline can be created at the edge of the keycap, and characters or symbols which are in a bright shape and are positioned in the bright outline are matched, so that a visual effect and atmosphere with obvious light-dark contrast are created, the convenience of using the keyboard in a dark place is improved, and the visual effect and the texture of the keyboard are improved.

Description

Backlit structure of the keyboard

technical field

The utility model relates to a keyboard, in particular to a backlight structure of a luminous keyboard.

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 on the keyboard in a low-light or dark environment, there are existing A variety of luminous keyboard patents come out, such as U.S. Nos. 6,284,988, 6,322,229, 6,199,996, 6,554,442, and 6,179,432; A technology that emits light from a type light-emitting sheet, allowing users to operate the keyboard in a dark environment.

However, in the above-mentioned patent technical documents, there is only an elastic body and a suspension mechanism to block the light-emitting element in the keyboard and the keycap, and most of the keycaps, elastic bodies and the suspension mechanism are light-transmitting in each patent. material (some patents design the key caps as non-transparent materials, but the characters on the key caps are made of light-transmitting materials), when the light-emitting element emits light from the whole piece, the keyboard presents a uniform backlight pattern, so This kind of light-emitting mode actually causes troubles for users, because the environments where users operate light-emitting keyboards are mostly low-light and relatively dark places, such as low-light environments such as inside airplanes and cars, but the entire keyboard emits light evenly, which will cause overall brightness. If it is too strong, it will affect other people around, and in this low-brightness environment, the user's ability to see the keyboard will be greatly reduced. If the entire piece is evenly lit, it will be difficult for the user to recognize the character symbols on each keycap. Those who are not familiar with the characters and symbols of the keycaps that cannot be memorized will often make knocking errors and input wrong command signals.

Based on the above, the applicant once proposed a keyboard with non-uniform light emission (China Taiwan Patent Announcement No. I230957), which is arranged between the light-emitting element used to provide the light source in the keyboard and the keycap that receives the light source. A shield, the shield is defined as a light-transmitting area located at the position of an individual keycap, and an opaque area located at the position of an adjacent keycap that does not belong to the individual keycap, so that the light emitted by the light-emitting element is corresponding to the individual keycap to generate brightness , and constitute a keyboard with only the keycaps emitting light instead of uniformly emitting light.

Utility model content

The purpose of this utility model is to provide a backlight structure of the keyboard, which can produce bright outlines on the edge of the keycaps, match bright characters or symbols, and then create a visual effect and atmosphere with obvious contrast between light and dark. The convenience of using the keyboard in the dark also improves the visual effect and texture of the keyboard.

In order to achieve the above purpose, the preferred embodiment disclosed by the utility model includes: an opaque keycap; bright characters or symbols arranged on the surface of the keycap; The light directly under the keycap cannot directly penetrate the keycap, but can only pass through the periphery of the keycap, so it can create a bright outline on the edge of the keycap, matching the bright characters or symbols in the bright circle, to achieve the above-mentioned purpose.

According to a preferred embodiment of the present invention, reflective material can be coated on the side of the bottom of the keycap facing the light source to reflect the light from the light source, improve the utilization of light and improve the light and dark contrast effect of the backlight.

According to a preferred embodiment of the present invention, the characters or symbols provided on the keycaps can be light-transmitting or self-illuminating, so as to provide bright and identifiable characters and symbols.

Relevant detailed description and technical content of the utility model, now just explain as follows with regard to coordinating drawing.

Description of drawings

FIG. 1 is a preferred embodiment of a keyboard utilizing the backlight structure disclosed in the present invention.

Fig. 2 is a structural exploded view of a preferred embodiment of the present invention.

Fig. 3 is a structural sectional view of a preferred embodiment of the present invention.

Fig. 4 is a structural sectional view of another preferred embodiment of the present invention.

Fig. 5 is a structural sectional view of another preferred embodiment of the present invention.

Fig. 6 is a schematic structural view showing another preferred embodiment of the present invention.

Detailed ways

Referring to Fig. 1 and Fig. 2, it is a preferred embodiment of a keyboard using the disclosed backlight structure of the present invention, wherein the keyboard has: a base plate 10, on which a plurality of keys that move up and down relative to the base plate 10 are provided Cap 11, elastic body 12 and suspension mechanism 13 are installed between keycap 11 and base plate 10, during normal state, keycap 11 is supported by elastic body 12 and suspension mechanism 13 (see Fig. 3), so keycap 11 can It is pressed down by an external force and returns to the normal position due to the restoring force of the elastic body 12 after the external force disappears, and the elastic body 12 and the suspension mechanism 13 are preferably made of a light-transmitting material.

The keyboard also has a backlight unit between the keycap 11 and the bottom plate 10, which includes a circuit board 14, a shielding element 15 and a light emitting element 16, the circuit board 14 is placed between the shielding element 15 and the light emitting element 16, and The position where the circuit board 14 is located directly below the keycap 11 is a light-transmitting area 18. A preferred embodiment of this light-transmitting area 18 is composed of two layers of transparent films located at the upper and lower positions respectively. The surfaces of the transparent films have respectively The upper electrode 181 and the lower electrode 182 that are paired and not in contact with each other normally, when the keycap 11 is pressed down, the elastic body 12 located under the keycap 11 will also move downward, and at this time, the bottom of the elastic body 12 The touch end 121 of the touch pad will press the upper electrode 181 to make it contact with the lower electrode 182, which can match the circuit design of the keyboard to generate electrical signals; To the bottom of the keycap 11, in principle, the light-emitting element 16 can be an electroluminescent plate, a light-emitting diode, a light guide device (such as a device composed of a side light source and a light guide plate), etc., and the shielding element 15 The main function is to limit the light emitted by the light-emitting element 16 from directly below the keycap 11 to the back of the keycap 11, so as to prevent the entire area on the back of the keycap 11 from emitting light and causing visual disturbance to the user. The shielding element 15 can be a completely opaque sheet-like element, and the shielding element 15 has a perforation 150 at a position corresponding to the light-transmitting area 18, so that the light emitted by the light-emitting element 16 can only pass through the light-transmitting area 18 and this through hole 150 to project directly below the keycap 11, since the circuit board 14 and the shielding element 15 have blocked most of the light emitted from the light-emitting element 16 below it, therefore, the background of the entire keyboard will not be blurred. Presents a bright form.

According to a preferred embodiment of the present invention, the keycap 11 is a completely opaque element, and its feasible implementation is, for example, making the keycap 11 with a completely opaque material or adding black to the material of the keycap 11 dye, and then print characters or symbols 120 (see FIG. 3 ) on the surface of the keycap 11 (the side facing the user) with a self-luminous material (such as a fluorescent material).

And another kind of preferred embodiment (see Fig. 4) is then on the back side of keycap 11 (that is, the side facing the light source) coating reflective layer 110 (such as silver paint with metal reflective material), so that the light emitting element 16 The light emitted to the back of the keycap 11 can be reflected by the reflective layer 110 to pass through the gap between adjacent keycaps 11, thereby creating a bright outline on the edge of the keycap 11 and increasing the outline bright effect.

Another preferred embodiment, the characters or symbols 120 on the surface of the keycap 11 are light-transmittable design (see FIG. 5 ), and its feasible implementation mode is that the keycap 11 can be made of a light-transmitting material, and the keycap 11 The back side (that is, the side facing the light source) is coated with a reflective layer 110, but the reflective layer 110 is not coated at the character or symbol 120, except that part of the light can be emitted from the transparent character or symbol 120, the rest of the light is Reflected by the reflective layer 110 and transmitted through the gap between adjacent keycaps 11 , a bright outline is formed on the edge of the keycaps 11 .

The backlight structure according to the aforementioned preferred embodiment of the present utility model can also be applied to a keyboard structure as shown in FIG. 6 , which differs from the aforementioned keyboard in FIG. , the bridge plate 20 is disposed between the keycap 11 and the circuit board 14, and the bridge plate 20 is preferably made of a light-transmitting material so as not to block the light from the light-emitting element 16, and the The bottom plate 10 is only used to carry the other components including the circuit board 14 , the shielding component 15 , and the light emitting component 16 .

As can be seen from the above, since the keyboard of the present invention has only the peripheral edge of the keycap 11 and the characters or symbols 120 are bright, therefore, the background of the entire keyboard will not appear bright, so the interference to the user can be reduced. The light from directly below the keycap 11 will form a bright outline on the edge of the keycap 11, and match with the bright characters or symbols 120 in the bright circle, thereby creating a visual effect and atmosphere with a clear contrast between light and dark. , in addition to improving the convenience of using the keyboard in the dark, it also improves the visual effect and texture of the keyboard.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. That is, all equivalent changes and modifications made according to the content of the patent scope of the present application shall be within the technical scope of the present application.

Claims (10)

1. The backlight structure of a kind of keyboard is characterized in that, has: A keycap (11), which is an opaque element, has a light-transmissible elastic body (12) on the bottom surface of the keycap (11); Bright characters or symbols (120) arranged on the surface of the keycap (11); a translucent suspension mechanism (13), supporting the keycap (11); a backlight unit, capable of emitting light and directing the generated light directly below the keycap (11), thereby generating a bright outline on the edge of the keycap (11); and The bottom plate (10) carries the above-mentioned components. 2. The backlight structure of the keyboard according to claim 1, characterized in that, the key cap (11) is completely opaque, and the characters or symbols (120) can emit light by themselves. 3. The backlight structure of the keyboard according to claim 1, characterized in that, the back side of the keycap (11) facing the light source has a reflective layer (110). 4. The backlight structure of the keyboard according to claim 2, characterized in that, the back side of the keycap (11) facing the light source has a reflective layer (110). 5. The backlight structure of the keyboard according to claim 1, characterized in that, the characters or symbols (120) on the surface of the keycap (11) can transmit light. 6. The backlight structure of the keyboard according to claim 5, characterized in that, the key cap (11) is light-transmissive, and has a reflective layer (110) on the back side of the key cap (11) facing the light source, but The reflective layer (110) is not present at the character or symbol (120). 7. The backlight structure of the keyboard according to claim 1, characterized in that, the backlight unit has a circuit board (14), a shielding element (15) and a light emitting element (16), and the circuit board (14) is between Between the shielding element (15) and the light emitting element (16). 8. The backlight structure of the keyboard according to claim 7, characterized in that, the circuit board (14) has a light-transmitting area (18) directly below the keycap (11), and the shielding element ( 15) There is a perforation (150) at a position corresponding to the light-transmitting area (18), so that the light emitted by the light-emitting element (16) can only pass through the light-transmitting area (18) and the perforation (150) ) to be projected directly below the keycap (11). 9. The backlight structure of the keyboard according to claim 7, characterized in that, the light-emitting element (16) can be any one of an electroluminescent panel, a light-emitting diode, and a light-guiding device. 10. The backlight structure of the keyboard according to claim 1, characterized in that, a bridge plate (20) is provided between the keycap (11) and the backlight unit to support the suspension mechanism ( 13).

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