CN101859182B

CN101859182B - Luminous keyboard

Info

Publication number: CN101859182B
Application number: CN2009101350054A
Authority: CN
Inventors: 蔡锦成; 江文庆
Original assignee: Chicony Electronics Suzhou Co Ltd
Current assignee: Chicony Electronics Suzhou Co Ltd
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2012-05-02
Anticipated expiration: 2029-04-13
Also published as: CN101859182A

Abstract

The invention relates to a luminous keyboard which comprises a key module, a keyboard base plate, a light guide plate, a light source and a first reflecting piece, wherein the key module is provided with a keycap, a scissor bracket, an elastic component and a film circuit board; the keyboard base plate is provided with a key connecting part which corresponds to the keycap and is integrated on the keyboard base plate and used for fixing the key module on the keyboard base plate; the light guide plate is arranged under the key module and on the keyboard base plate and is provided with an incident surface, a bottom surface which is crossed with the incident surface, an emergent surface which is opposite to the incident surface, and light holes which correspond to the key connecting part; the light source is arranged at one side of the incident surface of the light guide plate and is used for projecting light into the light guide plate by the incident surface and ejecting the light out of the light guide plate by the emergent surface; the first reflecting piece is arranged under the bottom surface of the light guide plate, is used for reflecting the light output from the light source into the light guide plate, and is provided with through holes which correspond to the key connecting part; and the through holes also correspond to the light holes.

Description

Illuminated keyboard

Technical field

The invention relates to a kind of illuminated keyboard, especially about a kind of illuminated keyboard with innovation LGP.

Background technology

Illuminated keyboard gradually becomes the new trend that computing machine is equipped with in recent years, has more and more many computer keyboards can import LGP and light source technology, makes the user in the unfavorable occasion of many light sources, still can easily use keyboard.Existing illuminated keyboard structure generally for example comprises keypad portion, back lighting device, base plate and LGP.Some existing layer body project organization is complicated; LGP in the illuminated keyboard of utilization LGP has the polylayer forest design; And this kind LGP is arranged at the keyboard bottom more; It is far away to desire Lighting Division apart from button, also can't see through the illumination that interior layer body arrival button make in the keyboard effectively by light source through the light that LGP penetrates.For example No. 6860612 patent of the U.S. promptly discloses a kind of illuminated keyboard that adopts LGP; Its LGP and light source are to be positioned at the bottom; As stated; Just be able to arrive the button that is positioned at the top for making light from light source must pass the layer body that multilayer is arranged at the top, cause the whole illumination effect of keyboard not good, and the polylayer forest infrastructure cost be higher.In addition, for example No. 6284988 patent of the U.S. of showing of Fig. 1 promptly used single electroluminescence (this existing illuminated keyboard 1 roughly comprised keypad portion 21, back lighting device 25 for Electroluminescent, EL) material.Keypad portion 21 has base plate 23 and circuit board 24.Circuit board 24 is provided with flexible member 26, keycap 22, scissor structure 27.This back lighting device 25 is EL, though integral thickness is thinner, darkness deepens, complicated circuit to need big voltage, life-span weak point and meeting during the EL activation, and the problem of electromagnetic interference (EMI) keyboard film circuit board is also arranged.

Summary of the invention

Because the disappearance of above-mentioned prior art the purpose of this invention is to provide a kind of illuminated keyboard with not enough, can effectively promote the keyboard illumination effect, significantly promote the utilization factor of light, and reduce manufacturing cost.

According to a kind of illuminated keyboard provided by the invention, comprise: key-press module has keycap, Holder for scissors, elastic component and film circuit board; Keyboard board has corresponding to said keycap and is integrally formed in the button connecting portion on this keyboard board, in order to this key-press module is fixed on this keyboard board; LGP is located at this key-press module below and this keyboard board top, the basal surface that this LGP has incidence surface, intersect with this incidence surface, and the exiting surface relative with this incidence surface, and be provided with light hole corresponding to said button connecting portion; Light source is located at a side of this incidence surface of this LGP, and this light source goes into to inject this LGP with light through this incidence surface, and penetrates this LGP through this exiting surface; And first reflector plate; Be located at this basal surface below of this LGP; Light in order to will export from this light source reflects into this LGP, and this first reflector plate is provided with the through hole corresponding to said button connecting portion, and said through hole is also corresponding to this light hole; Wherein the said light hole of this LGP is the said through hole greater than this reflector plate; The light of going into to inject this LGP utilizes said light hole to produce various optical phenomenas, so that light effectively shines this key-press module of this LGP top through said light hole, and the wall of the said light hole of this LGP is with respect to the angle θ of the basal surface of this LGP _ACan be 10 °≤θ _A≤170 °, wherein with 45 °≤θ _A≤90 ° is preferable.

According to the illuminated keyboard of one embodiment of the invention, the basal surface of this LGP is provided with a plurality of light converging patterns district, in order to the light of going into to inject this LGP is reflected and the optically focused effect that reflects.

According to the illuminated keyboard of one embodiment of the invention, said light converging pattern district is formed at the optically focused particle on this basal surface of this LGP with printing, pressing or blasting treatment mode.

According to the illuminated keyboard of one embodiment of the invention, at least one side of this LGP can be coated with reflective material, in order to will the luminous energy of this light source effectively being utilized from this LGP of light reflected back of this leaded light edges of boards ejaculation.

According to the illuminated keyboard of one embodiment of the invention, this LGP is by the plastics injection molding.

According to the illuminated keyboard of one embodiment of the invention, this reflector plate is bright reflective material of white.

According to the illuminated keyboard of one embodiment of the invention, this light source can be provided with this LGP below middle each other at a certain distance with respect to the basal surface of this LGP.

According to the illuminated keyboard of one embodiment of the invention, this button base plate can be metallic mirror surface.

According to the illuminated keyboard of one embodiment of the invention, this film circuit board has elasticity soft formation and circuit layer.

Illuminated keyboard according to one embodiment of the invention; This film circuit board has the opening corresponding to said button connecting portion; Pass in order to said button connecting portion; And this film circuit board is fixed on this button base plate, and let the light that penetrates from this LGP exiting surface pass through the said keycap of said opening directive.

Illuminated keyboard according to one embodiment of the invention; Said button connecting portion passes the part of the said through hole on this reflecting plate top, the part of the said light hole on this LGP and the part of the said opening on this film circuit board, and this reflecting plate, this LGP and this film circuit board are connected.

Illuminated keyboard according to one embodiment of the invention; Each is located at said Holder for scissors between said keycap and the said elastic component; Each is located at said elastic component on this film circuit board, and said Holder for scissors each can make relative this button base plate of corresponding keycap move up and down, when each is pressed downward when said keycap; Each just can press this film circuit board said elastic component, with output corresponding signal.

According to the illuminated keyboard of one embodiment of the invention, this circuit layer of this film circuit board is to process with light transmissive material.

According to the illuminated keyboard of one embodiment of the invention, this circuit layer of this film circuit board can mode of printing be formed at the upper surface of this LGP.

According to the illuminated keyboard of one embodiment of the invention, this light source is a light emitting diode.

According to the illuminated keyboard of one embodiment of the invention, this light converging pattern district can be formed on the upper surface of this LGP.

Description of drawings

For making above-mentioned purpose of the present invention, characteristic and the advantage can be more obviously understandable, below will present invention will be described in detail with reference to the accompanying embodiment, wherein:

Fig. 1 is the cross-sectional view of existing illuminated keyboard;

Fig. 2 is the three-dimensional exploded view of embodiments of the invention;

Fig. 3 is the sectional view of LGP according to an embodiment of the invention;

Fig. 4 is the vertical view of the LGP of illuminated keyboard according to an embodiment of the invention;

Fig. 5 is the vertical view of the reflecting piece of illuminated keyboard according to an embodiment of the invention; And

Fig. 6 is LGP, reflector plate and the button base plate combination vertical view of illuminated keyboard according to an embodiment of the invention.

Embodiment

Shown in the illuminated keyboard three-dimensional exploded view of the present invention of Fig. 2, the illuminated keyboard 10 of a preferred embodiment comprises key-press module 11, keyboard board 12, LGP 13, light source 14 and first reflector plate 15.Key-press module 11 has keycap 111, Holder for scissors 112, elastic component 113 and film circuit board 114.Keyboard board 12 has corresponding to said keycap 111 and is integrally formed in the button connecting portion 121 on the keyboard board 12, in order to key-press module 11 is fixed on the keyboard board 12.LGP 13 is located at key-press module 11 belows and keyboard board 12 tops.The basal surface 132 that LGP 13 has incidence surface 131, intersect with incidence surface 131, and the exiting surface 133 relative with incidence surface 131, and be provided with light hole 134 corresponding to button connecting portion 121.Be located at a side of the incidence surface 131 of LGP 13 by the for example light source 14 of several light emitting diodes (LED) formation.Light source 14 goes into to inject LGP 13 with light through incidence surface 131, and penetrates LGP 13 through exiting surface 133.Referring to Fig. 2, first reflector plate 15 is located at basal surface 132 belows of this LGP 13 again, reflects into LGP 13 in order to the light that will export from light source 14.Like Fig. 2 and shown in Figure 5, first reflector plate 14 is provided with the through hole 151 corresponding to button connecting portion 121.All through holes 151 are also corresponding to all light holes 134.

The light hole 134 of LGP 13 is the through holes 151 greater than first reflector plate 15.It is various such as comprehensive optical phenomenas such as reflection, refraction, retroeflection or its that the light of going into to inject LGP 13 utilizes light hole 134 to produce, so that light is through the effective key-press modules of irradiation LGPs 13 tops of light hole 134.

Referring to the sectional view of LGP according to an embodiment of the invention shown in Figure 3, the wall of the light hole 134 of the LGP 13 of illuminated keyboard of the present invention is with respect to the angle θ of the basal surface 132 of this LGP _ACan be 10 °≤θ _A≤170 °, wherein with 45 °≤θ _A≤90 ° is preferable.LGP 13 is by the plastics injection molding according to an embodiment of the invention, so manufacture craft is simple, can reduce whole manufacturing cost.

Fig. 4 is the vertical view of the LGP 13 of illuminated keyboard of the present invention.Can form tiny optically focused particle on the basal surface 132 of LGP 13 with printing, pressing or blasting treatment mode on the basal surface of LGP 13, with further formation a plurality of light converging patterns district 135 as shown in Figure 4.The effect in light converging pattern district 135 is the light of going into to inject LGP 13 is reflected and the optically focused effect that reflects.In addition, light converging pattern district 135 also can be formed on the upper surface relative with the lower surface of LGP 13.

Because the transmission of light is comprehensive; So be injected into the interior light of LGP except from exiting surface penetrates; Also can penetrate other zone, therefore, at least one side that is different from incidence surface of LGP 13 can be coated with reflective material (not shown); In order to this LGP 13 of light reflected back that will penetrate from least one side of LGP, so that effectively utilize the light of light source.

Reflector plate can be bright of the reflective white of plastics/PVC according to an embodiment of the invention.In another embodiment, anti-wet look also can be and has different colours bright of the color of (for example green, indigo plant etc.).In another embodiment, reflector plate can directly be engaged on the basal surface of the LGP adjacent with the button base plate with coating, printing or adhesive means, and this measure can be omitted one deck reflecting piece, more can reduce the thickness of whole illuminated keyboard.

The light source 14 that constitutes with LED of illuminated keyboard of the present invention is except a side of this incidence surface of being located at this LGP as shown in Figure 6; According to one embodiment of the invention; The a plurality of LED that constitute light source can be provided with this LGP below middle each other at a certain distance with respect to the basal surface of this LGP.In addition, using LED to be as the characteristics of light source can conversion shades of colour and arrangement, can also represent seven color colors simultaneously.

Film circuit board 114 comprises elasticity soft formation and circuit layer.In addition; Film circuit board 114 has the opening 115 corresponding to said button connecting portion 121; Pass in order to said button connecting portion 121; And this film circuit board 114 is fixed on this button base plate 12, and let the light that penetrates from this LGP 13 exiting surfaces 133 pass through the said keycap 111 of said opening 115 directives.Specifically; The vertical view of the LGP of illuminated keyboard according to an embodiment of the invention as shown in Figure 6, reflector plate and the combination of button base plate; Button connecting portion 121 passes the part of all through holes on reflector plate top, the part of all light holes on the LGP; And a part of further passing all openings on the film circuit board, and with reflecting plate, LGP and the film circuit board (not shown) that is connected.The button base plate 12 of illuminated keyboard 10 of the present invention can be metallic mirror surface, is beneficial to reflection of light.

Referring to Fig. 2, Holder for scissors 112 is located between keycap 111 and the elastic component 113 for existing common scissor structure again.Elastic component 113 is located on the film circuit board 114.Holder for scissors can make relative this button base plate of corresponding keycap move up and down, and when each keycap was pressed downward, each corresponding elastic component just can press this film circuit board, to produce respective signal.

The circuit layer of film circuit board 111 is to process with light transmissive material.In addition, circuit layer can also mode of printing be formed at the upper surface of LGP.

Above-mentioned each embodiment is merely illustrative principle of the present invention and effect thereof, but not is used to limit the present invention.Modification and change that any personage who is familiar with this technology can reach easily include in the scope of this case instructions disclosure and appended the application's claim.Therefore, the application's claim scope of stating of rights protection scope Ying Ruhou of the present invention is listed.

Claims

1. illuminated keyboard comprises:

Key-press module has keycap, Holder for scissors, elastic component and film circuit board;

Keyboard board has corresponding to said keycap and is integrally formed in the button connecting portion on this keyboard board, in order to this key-press module is fixed on this keyboard board;

LGP is located at this key-press module below and this keyboard board top, the basal surface that this LGP has incidence surface, intersect with this incidence surface, and the exiting surface relative with this incidence surface, and be provided with light hole corresponding to said button connecting portion;

Light source is located at a side of this incidence surface of this LGP, and this light source goes into to inject this LGP with light through this incidence surface, and penetrates this LGP through this exiting surface; And

First reflector plate is located at below this basal surface of this LGP, reflects into this LGP in order to the light that will export from this light source, and this first reflector plate is provided with the through hole corresponding to said button connecting portion, and said through hole is also corresponding to this light hole, wherein

The said light hole of this LGP is the said through hole greater than this reflector plate, and the light of going into to inject this LGP utilizes said light hole to produce various optical phenomenas, so that light effectively shines this key-press module of this LGP top through said light hole, and

The wall of the said light hole of this LGP is with respect to the angle θ of the basal surface of this LGP _ABe 10 °≤θ _A≤170 °.

2. illuminated keyboard as claimed in claim 1 is characterized in that the wall of the said light hole of this LGP is with respect to the angle θ of the basal surface of this LGP _AFor with 45 °≤θ _A≤90 °.

3. illuminated keyboard as claimed in claim 1 is characterized in that, the basal surface of this LGP is provided with a plurality of light converging patterns district, in order to the light of going into to inject this LGP is reflected and the optically focused effect that reflects.

4. illuminated keyboard as claimed in claim 3 is characterized in that, said light converging pattern district is formed at the optically focused particle on this basal surface of this LGP with printing, pressing or blasting treatment mode.

5. illuminated keyboard as claimed in claim 1 is characterized in that, at least one side that is different from this incidence surface of this LGP is coated with reflective material, in order to this LGP of light reflected back that will penetrate from this leaded light edges of boards.

6. illuminated keyboard as claimed in claim 1 is characterized in that this LGP is by the plastics injection molding.

7. illuminated keyboard as claimed in claim 1 is characterized in that, this reflector plate is bright reflective material of white.

8. illuminated keyboard as claimed in claim 1 is characterized in that, this light source can be arranged at this LGP below middle each other at a certain distance with respect to the basal surface of this LGP.

9. illuminated keyboard as claimed in claim 1 is characterized in that this keyboard board can be metallic mirror surface.

10. illuminated keyboard as claimed in claim 1 is characterized in that this film circuit board has elasticity soft formation and circuit layer.

11. illuminated keyboard as claimed in claim 1; It is characterized in that; This film circuit board has the opening corresponding to said button connecting portion; Pass in order to said button connecting portion, and this film circuit board is fixed on this keyboard board, and let the light that penetrates from this LGP exiting surface pass through the said keycap of said opening directive.

12. illuminated keyboard as claimed in claim 11; It is characterized in that; Said button connecting portion passes said through hole, the said light hole on this LGP and the said opening on this film circuit board on this reflector plate, and reflector plate, LGP and film circuit board are connected.

13. illuminated keyboard as claimed in claim 1; It is characterized in that said Holder for scissors is located between said keycap and the said elastic component, said elastic component is located on this film circuit board; Said Holder for scissors can make relative this keyboard board of corresponding keycap move up and down; When said keycap was pressed downward, said elastic component just can press this film circuit board, with output corresponding signal.

14. illuminated keyboard as claimed in claim 10 is characterized in that, this circuit layer of this film circuit board is to process with light transmissive material.

15. illuminated keyboard as claimed in claim 10 is characterized in that, this circuit layer of this film circuit board can mode of printing be formed at the upper surface of this LGP.

16. illuminated keyboard as claimed in claim 1 is characterized in that, this light source is a light emitting diode.

17. illuminated keyboard as claimed in claim 1 is characterized in that, the upper surface of this LGP is provided with a plurality of light converging patterns district, in order to the light of going into to inject this LGP is reflected and the optically focused effect that reflects.