CN105931903A - Light emitting key - Google Patents

Abstract

The present invention relates to a light-emitting key. The light-emitting key has a dedicated light source. The light source transmits light through the switch circuit board of the light-emitting key to provide light to the light-transmitting keycap of the light-emitting key, so that many of the light-emitting keyboards of the present invention are applied. The light received by the light-transmitting keycaps of the luminous keys tends to be consistent, so that the brightness of the light-transmitting keycaps in the luminous keyboard tends to be consistent to meet the requirements of optical uniformity.

Description

Illuminated keys

technical field

The invention relates to a luminous key, in particular to a luminous key with a dedicated light source.

Background technique

At present, most luminous keyboards use the backlight module as the light source. Generally speaking, the backlight module has a light source and a light guide. Light keycaps. However, due to the arrangement of the backlight module, the overall thickness of the luminous keyboard cannot be reduced.

In addition, because the backlight module of the luminous keyboard is equipped with a light guide plate, each light-transmitting keycap does not have its own light source. As a result, the light-transmitting keycaps that are closer to the light source will be more sensitive than the light-transmitting keycaps that are farther away from the light source. It needs to be brighter, so there is often a problem of inconsistent brightness between the light-transmitting keycaps of the current luminous keyboard.

Therefore, how to improve the structure of the luminous keyboard to solve the above-mentioned problems caused by the backlight module has become a technical issue that the industry is concerned about.

Contents of the invention

In order to improve the above-mentioned problems that the thickness cannot be reduced and the brightness is inconsistent, the present invention provides a light-emitting key.

The above-mentioned illuminated keys include:

Transparent keycap;

a bottom plate, the bottom plate is arranged under the light-transmitting keycap;

a linkage member, the upper end of which is movably connected to the light-transmitting keycap;

A switch circuit board, the switch circuit board is arranged on the base plate, the switch circuit board has a switch part, a first hollow part, a first connecting piece and an outer frame part; wherein,

The first hollow part is located between the switch part and the outer frame part, and the lower end of the linkage member is movably connected to the bottom plate through the first hollow part, so that the light-transmitting keycap can move up and down relative to the bottom plate , and then trigger the switch part;

The outer frame portion has a light incident hole, the light incident hole has a light incident side wall, and the first connecting member extends from the first side of the switch portion toward the outer frame portion toward the direction close to the light incident side wall, so that connecting the first side of the switch portion to the outer frame portion; and

A light source circuit board, the light source circuit board has a light source, the light source has a light-emitting surface, the light source enters the light-incoming hole, the light-emitting surface emits first light, and the first light enters the light-incoming side wall;

Wherein, the first light is transmitted along a first straight line avoiding the first hollow part, and the first straight line passes through the outer frame part and the first connecting part in sequence, and goes from the light incident side wall to the The direction of the switch part is conducted to provide light to the light-transmitting keycap.

As an optional technical solution, the light-transmitting keycap includes a first side and a second side, the first side is perpendicular to the second side, the length of the first side is greater than or equal to the length of the second side, and the second side The included angle between a straight line and the normal line perpendicular to the light-incident sidewall is 0° to 45°, and the length of the first light transmission path from the light-incident sidewall to the switch part is longer than the light-transmitting keycap a quarter of the length of the first side.

As an optional technical solution, the projection of the light-transmitting keycap on the base plate forms a projection area of the light-transmitting keycap, the projection of the linkage member on the base plate forms a projection area of the linkage member, and the projection of the light entrance hole on the base plate A projection area of the light entrance hole is formed, the projection area of the interlocking member is within the projection area of the light-transmitting keycap, and the projection area of the light-incoming hole is outside the projection area of the light-transmitting keycap.

As an optional technical solution, the light-emitting key further includes a frame, the frame has a frame hollow part, the light-transmitting keycap is arranged in the frame hollow part, and the frame extends above the light source so that the upper surface of the light source cannot be observed.

As an optional technical solution, the switch circuit board further includes a second connecting piece, and the second connecting piece extends from the second side of the switch part to the outer frame part in a direction away from the light incident side wall, so that the The second side of the switch part is connected to the outer frame part, wherein, after the first light is transmitted to the switch part, it is also transmitted to the second connecting part along a second straight line to provide light to the transparent keycap.

As an optional technical solution, the included angle between the first straight line and the second straight line is 0° to 30°.

As an optional technical solution, the light-emitting key further includes a plurality of scattering points, the plurality of scattering points are arranged on the switch circuit board, and the plurality of scattering points make the first light escape from the switch circuit board and travel upward to the transparent Light keycaps.

As an optional technical solution, the plurality of scattering points are spaced apart on the first surface or the second surface of the second connecting member, and the plurality of scattering points make the first light go away from the second connecting member and travel upward to In the transparent keycap, the first surface is opposite to the second surface.

As an optional technical solution, among the plurality of scattering points, adjacent scattering points close to the light source are separated from each other by a first distance, and among the plurality of scattering points, adjacent scattering points far from the light source are separated from each other by a second distance , the first distance is greater than the second distance.

As an optional technical solution, the arrangement area of the scattering points close to the light source among the plurality of scattering points is smaller than the arrangement area of the scattering points far away from the light source among the plurality of scattering points.

As an optional technical solution, the light source circuit board is located above the switch circuit board, the light source protrudes downward from the light source circuit board, so that the light exit surface enters the light entrance hole, and the light source circuit board also has a first Two hollow parts, the lower end of the linkage member is movably connected to the bottom plate through the second hollow part.

As an optional technical solution, the light source circuit board is located below the switch circuit board, the light source protrudes upward from the light source circuit board, so that the light exit surface enters the light entrance hole, and the light source circuit board also has a second The hollow part and the circuit board support part, the lower end of the linkage member is movably connected to the bottom plate through the second hollow part, and the circuit board support part is located between the switch circuit board and the bottom plate to provide support for the switch circuit board .

As an optional technical solution, the circuit board support part is located between the switch part and the bottom plate to provide support for the switch part.

As an optional technical solution, the circuit board supporting part is located between the first connecting part and the bottom plate to provide support for the first connecting part.

As an optional technical solution, the switch circuit board further includes an extension piece, the extension piece extends from the second side of the switch part in a direction away from the light-incident side wall, wherein the first light is transmitted to the switch part , is also transmitted to the extension along the second straight line to provide light to the light-transmitting keycap.

Compared with the prior art, the light-emitting button of the present invention has a dedicated light source and a switch circuit board. The switch circuit board has a light hole and a connecting piece, wherein the light hole is used to receive the light emitted by the light source, and the connecting piece transmits the light received by the light hole to provide light to the light-transmitting keycap of the luminous button, so The luminous keyboard of the present invention does not need to be equipped with a light guide plate and can reduce the volume, and the light received by the transparent keycaps of the plurality of luminous keys is similar, so that the brightness of the transparent keycaps in the luminous keyboard tends to be consistent.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

1 is a sectional view of a luminous keyboard using a first embodiment of a luminous key according to the present invention;

Fig. 2 is an exploded view of the components of the first embodiment of the luminous key according to the present invention;

Fig. 3 is a component assembly diagram of the switch circuit board and the light source circuit board of the luminous button shown in Fig. 2;

Fig. 4 is a side view of components of the switch circuit board and the light source circuit board of the luminous button shown in Fig. 3;

Fig. 5 is a schematic diagram of the non-equidistant arrangement of scattering points on the switch circuit board of the light-emitting button of the present invention;

Fig. 6 is a schematic diagram of the light transmission state of the switch circuit board of the first embodiment of the light-emitting key according to the present invention;

7 is a cross-sectional view of a luminous keyboard using a second embodiment of the luminous keys of the present invention;

Fig. 8 is an exploded view of the components of the second embodiment of the luminous key according to the present invention;

Fig. 9 is an assembly diagram of the components of the switch circuit board and the light source circuit board of the light-emitting button shown in Fig. 8;

10 is a schematic diagram of the light transmission state of the switch circuit board of the second embodiment of the light-emitting key according to the present invention;

Fig. 11 is a schematic diagram of a first structural example of a switch circuit board of a light-emitting key according to the present invention;

12 is a schematic diagram of a second structural example of the switch circuit board of the light-emitting key according to the present invention;

Fig. 13 is a schematic diagram of a third structural example of a switch circuit board of a light-emitting key according to the present invention;

FIG. 14 is a schematic diagram of a fourth structural example of a switch circuit board of a light-emitting key according to the present invention.

detailed description

The following content will be combined with drawings to illustrate the technical content of the present invention through specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various modifications and changes may be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. In particular, the proportions and relative positions of various components in the drawings are for exemplary purposes only, and do not represent the actual situation of the implementation of the present invention.

The present invention solves the problem of different brightness between the light-transmitting keycaps of the luminous keyboard in the prior art. For the structural characteristics of the luminous keyboard using the luminous key of the present invention, please refer to Figure 1 and Figure 7. Figure 1 shows the use of the luminous key of the present invention. Fig. 7 is a cross-sectional view of the light-emitting keyboard using the second embodiment of the light-emitting key of the present invention. As shown in Figure 1 and Figure 7, each light-transmitting keycap 11 in the luminous keyboard is provided with a dedicated light source 161, so that the light received by each light-transmitting keycap 11 in the luminous keyboard is uniform, and the current problem can be solved. There is a problem of inconsistent brightness between light-emitting keyboards and light-transmitting keycaps in the technology.

In order to make the disclosure more concise and easy to understand, components with the same or similar functions in the following embodiments will be described with the same symbols, and the description of the same or equivalent features will be omitted.

Please refer to Fig. 2-Fig. 6, Fig. 2 is an exploded view of the components of the first embodiment of the luminous key according to the present invention, and Fig. 3 is an assembly diagram of the components of the switch circuit board and the light source circuit board of the luminous key shown in Fig. 2; 4 is a side view of the components of the switch circuit board and the light source circuit board of the light-emitting button shown in FIG. 3; FIG. A schematic diagram of the light transmission state of the switch circuit board of the first embodiment. The luminous key 1 includes a light-transmitting keycap 11 , a frame 14 , a linkage member 13 , a light source circuit board 16 , a switch circuit board 15 and a bottom plate 12 . The frame 14 has a frame hollow portion 141 , and the light-transmitting keycap 11 is disposed in the frame hollow-out portion 141 . The frame 14 can reduce light leakage around the light-transmitting keycap 11 and conform to aesthetics.

The switch circuit board 15 has a switch part 151 , a first hollow part 152 , a first connecting part 1531 , a second connecting part 1532 and an outer frame part 154 . The light source circuit board 16 has a second hollow portion 162 . The first hollow part 152 is located below the second hollow part 162 , and the first hollow part 152 is located between the switch part 151 and the outer frame part 154 .

Wherein, the upper end of the linkage member 13 is movably connected to the light-transmitting keycap 11, the lower end of the linkage member 13 passes through the light source circuit board 16 through the second hollow part 162, and then passes through the switch circuit board 15 through the first hollow part 152. , so that the lower end of the linkage member 13 can be movably connected to the base plate 12 , so that the light-transmitting keycap 11 can reciprocate up and down relative to the base plate 12 , and then trigger the switch portion 151 .

Please refer to FIG. 11 at the same time. FIG. 11 is a schematic diagram of a first structural example of a switch circuit board of a light-emitting key according to the present invention. The outer frame portion 154 has a light incident hole 1541 providing a light incident side wall 15411 . The first connecting piece 1531 and the second connecting piece 1532 connect the switch portion 151 and the outer frame portion 154 respectively. In this embodiment, the first connecting piece 1531 approaches the light incident side wall 15411 from the first side of the switch portion 151 Extending to the outer frame portion 154, so that the first side of the switch portion 151 is connected to the outer frame portion 154, and the second connecting member 1532 extends from the second side of the switch portion 151 to the outer frame portion in a direction away from the light incident side wall 15411 154, so that the second side of the switch part 151 is connected to the outer frame part 154.

Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 6 together. In this embodiment, the light source circuit board 16 is located above the switch circuit board 15, and the light source circuit board 16 has a light source 161 that can enter the light entrance hole 1541 below. The light side wall 15411 emits the first light R1. The first light R1 is transmitted along the first straight line L1 avoiding the first hollow portion 152 , sequentially passes through the outer frame portion 154 and the first connecting member 1531 , and is transmitted from the light incident sidewall 15411 toward the direction of the switch portion 151 , Further, light is provided to the light-transmitting keycap 11 . Furthermore, after the first light R1 is transmitted to the switch portion 151 , it can also be transmitted to the second connecting member 1532 along the second straight line L2 to provide light to a large area of the light-transmitting keycap 11 .

Optionally, as shown in FIG. 12 and FIG. 13 , FIG. 12 is a schematic diagram of a second structural example of a switch circuit board of a light-emitting key according to the present invention, and FIG. 13 is a schematic diagram of a third structural example of a switch circuit board of a light-emitting key according to the present invention. The included angle θ1 between the first straight line L1 and the second straight line L2 may be 0° to 30°. The included angle θ2 between the first straight line L1 and the normal line VL perpendicular to the light incident sidewall 15411 is 0° to 45°. In addition, the length of the transmission path of the first light R1 from the light-incident sidewall 1541 to the switch part 151 is greater than a quarter of the length of the first side of the light-transmitting keycap 11, so as to provide a wide area of the light-transmitting keycap 11. In addition to the above-mentioned first side, the light-transmitting keycap 11 also includes a second side perpendicular to the first side, and the length of the first side is greater than or equal to the length of the second side.

Optionally, as shown in FIG. 14 , which is a schematic diagram of a fourth structural example of the switch circuit board of the luminous key according to the present invention, the switch circuit board 15 further includes an extension 1533 extending from the second side of the switch part 151 It extends away from the light incident side wall 15411 but is not connected to the outer frame part 154. In this way, after the first light R1 is transmitted to the switch part 151, it is also transmitted to the extension part 1533 along the second straight line L2, so as to transmit light to the light-transmitting key. Cap 11 provides light.

The first light R1 is transmitted to the second connecting piece 1532 or the extension piece 1533 after passing through the first connecting piece 1531. Attenuate energy, so the energy of the first light R1 on the second link 1532 or the extension 1533 will be smaller than the energy on the first link 1531, so the second link of the switch circuit board 15 of this embodiment 1532 or the surface of the extension 1533 are arranged with a plurality of scattering points 17 at intervals. When part of the first light R1 touches any one of the scattering points 17, the part of the first light R1 can pass from the second connecting part 1532 or the extension 1533 Detach and move upward to the light-transmitting keycap 11 , so as to increase the luminous intensity of the light-transmitting keycap 11 at a distance from the light source 161 and improve the uniformity of the overall luminous effect of the keycap.

Furthermore, the arrangement spacing or arrangement area of the plurality of scattering points 17 on the surface of the second connecting member 1532 or the extension member 1533 can be adjusted according to the distance from the light source 161, that is, among the plurality of scattering points 17 adjacent to the light source 161 The distance between the scattering points of the plurality of scattering points 17 is greater than the distance between adjacent scattering points away from the light source 161 among the plurality of scattering points 17, and the layout area of the scattering points close to the light source 161 among the plurality of scattering points 17 is smaller than that of the plurality of scattering points 17 The layout area of the scattering points away from the light source 161 among the points 17, that is, the farther away from the light source 161 on the surface of the second connecting member 1532, the denser or larger the scattering points 17 will be arranged. For example, as shown in Figure 5, there are a plurality of scattering points 17 on the second link 1532, (1) closer to the light source 161, two adjacent scattering points 17 are separated by a first distance D1 from each other; (2) the distance The light source 161 is relatively far away, and two adjacent scattering points 17 are separated from each other by a second distance D2; wherein, the first distance D1 is greater than the second distance D2, that is, the surface of the second connecting member 1532 can be provided with a plurality of non-equidistant scattering points. Points 17, but not limited thereto, for example, as shown in FIG. 4 , a plurality of scattering points 17 can also be equidistantly arranged on the surface of the second connecting member 1532 to meet the luminous effect required by the light-transmitting keycap 11 .

Please refer to Fig. 7-Fig. 10, Fig. 7 is a sectional view of a luminous keyboard using the second embodiment of the luminous key of the present invention, Fig. 8 is an exploded view of the components of the second embodiment of the luminous key of the present invention, Fig. 9 is Fig. 8 10 is a schematic diagram of the light transmission state of the switch circuit board of the second embodiment of the light-emitting key according to the present invention. The main difference between this embodiment and the first embodiment is that the light source circuit board 16 is located below the switch circuit board 15, and the light source 161 protrudes upward from the light source circuit board 16, so that the light output surface 1611 of the light source 161 enters the entrance of the switch circuit board 15. In the light hole 1541, the frame 14 extends above the light source 161 to provide shielding for the light source 161, so that the user cannot see the upper surface of the light source 161, and reduces the light scattered upward by the light source 161 that the user can observe. It also adds to the overall aesthetics of the keyboard.

In addition, the light source circuit board 16 also has a circuit board support part 163, and the circuit board support part 163 is located between the switch part 151 and the bottom plate 12, to eliminate the gap between the bottom plate 12 and the switch part 151, and firmly support the switch part 151, ensuring The light-transmitting keycap 11 can trigger the switch part 151 smoothly. As shown in FIG. 8 , the circuit board supporting portion 163 can also extend to between the first connecting member 1531 and the base plate 12, and between the second connecting member 1532 and the base plate 12, so as to more firmly support the first connecting member 1531 and the second connecting member 1531. The two connecting parts 1532 can also ensure that the light-transmitting keycap 11 can trigger the switch part 151 smoothly.

In addition, please continue to refer to FIG. 9 , in this embodiment, the projection of the light-transmitting keycap 11 on the base plate 12 forms a light-transmitting keycap projection area 121 . The projection of the linkage member 13 on the bottom plate 12 forms a linkage member projection area 122 . The projection of the light entrance hole 1541 on the bottom plate 12 forms the light entrance hole projection area 123 . The projection area 122 of the linkage member is within the projection area 121 of the transparent keycap, and the projection area 123 of the light entrance hole is outside the projection area 121 of the transparent keycap. In this way, there is enough space under the interlocking member 13 to avoid interference between the interlocking member 13 and the light source 161 when the light-transmitting keycap 11 moves up and down relative to the bottom plate 12, thereby ensuring that the keycap 11 maintains a sufficient up-and-down movement stroke. , and at the same time can reduce the height of the overall keyboard. Of course, the arrangement relationship between the switch circuit board and the light source circuit board can also be used in the light-emitting keyboard of the first embodiment above.

To sum up, the light-emitting button of the present invention has a dedicated light source and a switch circuit board. The switch circuit board has a light hole and a connecting piece, wherein the light hole is used to receive the light emitted by the light source, and the connecting piece transmits the light received by the light hole to provide light to the light-transmitting keycap of the luminous button, so The luminous keyboard of the present invention does not need to be equipped with a light guide plate and can reduce the volume, and the light received by the transparent keycaps of the plurality of luminous keys is similar, so that the brightness of the transparent keycaps in the luminous keyboard tends to be consistent.

Certainly, the present invention also can have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (15)

1. A luminescent key, comprising:

a light transmissive keycap;

the bottom plate is arranged below the light-transmitting keycap;

the upper end of the linkage component is movably connected with the transparent keycap;

the switch circuit board is arranged on the bottom plate and is provided with a switch part, a first hollow part, a first connecting piece and an outer frame part; wherein,

the first hollow part is positioned between the switch part and the outer frame part, and the lower end of the linkage component is movably connected with the bottom plate through the first hollow part, so that the transparent keycap can move up and down relative to the bottom plate to trigger the switch part;

the outer frame part is provided with a light inlet hole, the light inlet hole is provided with a light inlet side wall, and the first connecting piece extends to the outer frame part from the first side of the switch part in the direction close to the light inlet side wall so as to enable the first side of the switch part to be connected with the outer frame part; and

the light source circuit board is provided with a light source, the light source is provided with a light outlet surface, the light source enters the light inlet hole, the light outlet surface emits first light, and the first light enters the light inlet side wall;

the first light is conducted along a first straight line which avoids the first hollow-out part, the first straight line sequentially passes through the outer frame part and the first connecting piece and is conducted from the light incidence side wall to the switch part, and light is provided for the light-transmitting keycap.

2. The luminescent key of claim 1, wherein the transparent key cap comprises a first edge and a second edge, the first edge is perpendicular to the second edge, the length of the first edge is greater than or equal to the length of the second edge, the angle between the first straight line and the normal perpendicular to the light-incident sidewall is 0 to 45 degrees, and the length of the first light-conducting path conducted from the light-incident sidewall to the switch portion is greater than one quarter of the length of the first edge of the transparent key cap.

3. The illuminated key of claim 1, wherein the projection of the transparent key cap on the bottom plate forms a projection area of the transparent key cap, the projection of the linking member on the bottom plate forms a projection area of the linking member, the projection of the light inlet on the bottom plate forms a projection area of the light inlet, the projection area of the linking member is in the projection area of the transparent key cap, and the projection area of the light inlet is outside the projection area of the transparent key cap.

4. The illuminated key of claim 1, further comprising a frame having a frame cutout, wherein the light transmissive key cap is disposed in the frame cutout, and the frame extends above the light source such that the upper surface of the light source is not visible.

5. The luminescent key of claim 1, wherein the switch circuit board further comprises a second connecting member extending from a second side of the switch portion to the outer frame portion in a direction away from the light-incident sidewall, so that the second side of the switch portion is connected to the outer frame portion, wherein the first light is transmitted to the switch portion and then transmitted to the second connecting member along a second straight line to provide light to the light-transmissive keycap.

6. The illuminated key of claim 5, wherein the first line and the second line form an angle of 0 to 30 degrees.

7. The light-emitting key of claim 1, further comprising a plurality of scattering dots disposed on the switch circuit board, wherein the scattering dots cause the first light to leave the switch circuit board and travel upward to the transparent keycap.

8. The luminescent key of claim 7, wherein the scattering dots are spaced apart from each other on the first side or the second side of the second link, the scattering dots cause the first light to leave the second link and travel upward to the transparent keycap, and the first side is opposite to the second side.

9. The illuminated key of claim 8, wherein adjacent scattering points of the plurality of scattering points that are closer to the light source are separated from each other by a first distance, and adjacent scattering points of the plurality of scattering points that are farther from the light source are separated from each other by a second distance, the first distance being greater than the second distance.

10. The illuminated key of claim 8, wherein an area of scattering points of the plurality of scattering points near the light source is smaller than an area of scattering points of the plurality of scattering points far from the light source.

11. The light-emitting key of claim 1, wherein the light source circuit board is disposed above the switch circuit board, the light source protrudes downward from the light source circuit board to allow the light-emitting surface to enter the light-entering hole, the light source circuit board further has a second hollow portion, and the lower end of the linking member is movably connected to the bottom plate through the second hollow portion.

12. The illuminated key of claim 1, wherein the light source circuit board is located below the switch circuit board, the light source protrudes upward from the light source circuit board to allow the light emitting surface to enter the light inlet hole, the light source circuit board further comprises a second hollow portion and a circuit board supporting portion, the lower end of the linking member is movably connected to the bottom plate through the second hollow portion, and the circuit board supporting portion is located between the switch circuit board and the bottom plate to support the switch circuit board.

13. The illuminated key of claim 12, wherein the circuit board support portion is located between the switch portion and the base plate to provide support for the switch portion.

14. The illuminated key of claim 12, wherein the circuit board support portion is located between the first connecting member and the base plate to provide support for the first connecting member.

15. The illuminated key of claim 1, wherein the switch circuit board further comprises an extension member extending from the second side of the switch portion in a direction away from the light-incident sidewall, wherein the first light is transmitted to the switch portion and then transmitted to the extension member along a second line to provide light to the light-transmissive key cap.