CN109786161A - Illuminated keyboard - Google Patents

Abstract

The present invention discloses a kind of illuminated keyboard, including multiple keys, switching circuit board, support plate, the backlight module that can produce light beam, reflector plate and anti-dazzling screen.Backlight module is between reflector plate and anti-dazzling screen, and the side area of the side area and anti-dazzling screen to reflector plate carries out hot pressing or laser fusion and forms sealing structure.Sealing structure closes the side area of backlight module, is overflowed to avoid light beam by the side area of backlight module.In addition, sealing structure will not occupy excessive space, therefore illuminated keyboard can have frivolous volume.

Description

Illuminated keyboard

Technical field

The present invention relates to a kind of keyboards, more particularly to the illuminated keyboard with light-emitting function.

Background technique

Common computer peripheral input unit includes mouse, keyboard and trace ball etc., and wherein keyboard can directly key in text Word and symbol give computer, therefore the attention quite by user and input unit manufacturer.

Referring to Fig. 1, it is the surface structure schematic diagram of existing keyboard.There are multiple keys on the surface of existing keyboard 1 10, those keys 10 are classified as general key 101, number key 102 and function key 103 etc., those keys are for user with hand Finger presses and generates corresponding signal and give computer, so that computer is executed touched keypress function, such as general key 101 is to defeated Entering the symbols such as English alphabet, number key 102 is to input number, and function key 103 is then providing various functions, such as F1~ F12 etc..Wherein existing keyboard 1 is the keyboard of laptop.

With the evolution of science and technology, keyboard manufacturer is dedicated to researching and developing the various keyboards with specific function, be made with meeting difference The various demands of user, wherein with illuminated keyboard most by the favor of user.The appearance of existing illuminated keyboard and existing keyboard 1 Appearance is roughly the same, but because illuminated keyboard provides the function of key light emitting, therefore the key of its internal structure and existing no light-emitting function Disk is different.Illustrate the internal structure of existing illuminated keyboard below.Referring to Fig. 2, it shows for the structural profile of existing illuminated keyboard It is intended to.Existing illuminated keyboard 2 includes multiple keys 20, film switch circuit 21, support plate 22 and backlight module 23, and each Key 20 includes button cap 201, scissor connecting element 202 and elastic element 203.In key 20, button cap 201 is revealed in Can be pressed by user except existing keyboard 2, scissor connecting element 202 to connect button cap 201 and support plate 22, And elastic element 203 passes through scissor connecting element 202 and contacts respectively with button cap 201 and film switch circuit 21.Branch Fagging 22 is located at the lower section of film switch circuit 21, can carry button cap 201, scissor connecting element 202, elastic element 203 and film switch circuit 21 thereon.

Film switch circuit 21 includes upper wiring board 211, separate layer 212 and lower wiring board 213, wherein upper wiring board 211, separate layer 212 and lower wiring board 213 are all with made by translucent material, and translucent material is polycarbonate Made by (Polycarbonate, PC) material or polyethylene (polyethylene, PE) material.Upper wiring board 211 has multiple Upper conductive part 2111, separate layer 212 is located at the lower section of upper wiring board 211, and has corresponding to the more of multiple upper conductive parts 2111 A separate layer aperture 2121.And lower wiring board 213 is located at the lower section of separate layer 212, has and corresponds to multiple upper conductive parts 2112 multiple lower conductive parts 2131 form multiple key switches 214 with multiple upper conductive parts 2111.

Backlight module 23 includes light guide plate 230, circuit board 231, a plurality of light-emitting elements 232 (two are only shown in figure), anti- Piece 233 and anti-dazzling screen 234 are penetrated, light guide plate 230 is located at the lower section of support plate 22, and circuit board 231 is located at film switch circuit 21 Lower section and be electrically connected at light-emitting component 232, can provide an electric power and give a plurality of light-emitting elements 232.A plurality of light-emitting elements 232 It is set on circuit board 231, and protrudes into multiple reflector plate apertures 2331 and the multiple leaded lights of light guide plate 230 of reflector plate 233 Plate aperture 2301.When a plurality of light-emitting elements 232 obtain electric power, it is able to generate multiple light beam B, and multiple light beam B are projected to Light guide plate 22.Reflector plate 233 is located at the lower section of light guide plate 230, and function is the multiple light beam B for being reflected off light guide plate 230, makes Multiple light beam B are again introduced into light guide plate 230.Anti-dazzling screen 234 is located at the top of light guide plate 230, can cover multiple light beam B. Wherein, a plurality of light-emitting elements 232 are lateral LED.Light guide plate 22 is all-trans in portion in the inner with multiple light beam B It penetrates and guides multiple light beam B, it is made to be projected to button cap 201.

In existing illuminated keyboard 2, above-mentioned each element is basipetal to put in order as button cap 201, scissor connection member Part 202, elastic element 203, film switch circuit 21, support plate 22, anti-dazzling screen 26, light guide plate 230 and reflector plate 233, In, existing illuminated keyboard 2 is the keyboard of laptop (not shown in the figures).

In key 20, there is an output optical zone domain 2011, and output optical zone domain 2011 is letter or symbol on each button cap 201 The position at place, wherein the position in output optical zone domain 2011 corresponds to the position of the light directing site 2302 on light guide plate 230, with Just light beam is up guided by light directing site 2302 to its output optical zone domain 2011.On the other hand, anti-dazzling screen 234 includes multiple Anti-dazzling screen aperture 2341, so that light beam B can pass through anti-dazzling screen 234 by anti-dazzling screen aperture 2341.Similarly, support plate 22 is wrapped Multiple support plate apertures 221 are included, so that light beam B can pass through support plate 22 by support plate aperture 221.

Further, since film switch circuit 21 is made by translucent material, to make multiple light beam B be obtained through thin film switch Circuit 21.Whereby, multiple light beam B are able in response to multiple light directing sites 223 and sequentially pass through multiple support plate apertures 221 and thin Membrane switch circuit 21, to be projected to multiple output optical zone domains 2011, make letter or symbol on its button cap 201 be then able to light transmission and With illumination effect.

As seen from Figure 2, the side area 2332 of reflector plate 233 must be bonded with anti-dazzling screen 234, to seal light guide plate 230, it so can just avoid light beam B to be overflowed by the side of light guide plate 230 really, and the situation of side light leakage can be prevented.However, anti- The structure that penetrating the side area 2232 of piece 233 must be bonded with anti-dazzling screen 234 can occupy a degree of space, and be unfavorable for sending out The volume of light keyboard is lightening.

Therefore, it is necessary to one kind can illuminated keyboard, it can be achieved that volume is lightening, also can avoid the situation of side light leakage.

Summary of the invention

It is lightening the purpose of the present invention is to provide a kind of achievable volume and avoid the illuminated keyboard of side light leakage.

In a preferred embodiment, the present invention provides a kind of illuminated keyboard, including an at least key, a switching circuit board, One support plate, a backlight module, a reflector plate and an anti-dazzling screen.At least a key is revealed in except the illuminated keyboard for this, and The switching circuit board is set to the lower section of an at least key, to because should at least triggering of a key due to generate it is corresponding One push button signalling.The support plate is set to the lower section of the switching circuit board, and is connected to an at least key.The backlight module is set It is placed in the lower section of the support plate, to generate a light beam, and projects the light beam to an at least key.The reflector plate is set to this In backlight module, to reflect the light beam, and the anti-dazzling screen is set between the backlight module and the support plate, to cover this Light beam；Wherein, the side border region of the reflector plate and the side border region of the anti-dazzling screen are molten by hot pressing technology or laser Conjunction technology and form a sealing structure, to avoid the light beam by the backlight module side border region overflow.

In short, illuminated keyboard of the present invention stretches out backlight using the side area of reflector plate and the side area of anti-dazzling screen Except module, and the side area of reflector plate and the side area of anti-dazzling screen are subjected to hot pressing or laser fusion and formed close Seal structure can avoid light beam whereby and be overflowed by the side area of backlight module, also that is, the situation that can avoid side light leakage occurs. Compared with bonding structure in the prior art, the sealing structure formed by hot pressing or laser fusion will not occupy excessive sky Between, to save the available space in illuminated keyboard, and it is lightening to be conducive to progress volume.

Detailed description of the invention

Fig. 1 is the surface structure schematic diagram of existing keyboard.

Fig. 2 is the structural profile illustration of existing illuminated keyboard.

Fig. 3 is partial structurtes decomposition diagram of the illuminated keyboard of the present invention in a preferred embodiment.

Fig. 4 is partial structurtes diagrammatic cross-section of the illuminated keyboard of the present invention in a preferred embodiment.

Description of symbols:

1 keyboard 2,3 illuminated keyboards

10,20,30 key, 21 film switch circuit

22,32 support plates 23,33 backlight modules

31 switching circuit boards 34,233 reflector plates

35,234 anti-dazzling screen, 36 sealing structure

The 101 general keys of general key 102

103 function keys 201,301 button caps

202 scissor connecting elements 203,303 elastic elements

211, wiring board 212,313 separate layers on 311

213,312 lower wiring board 214,314 key switches

221,322 support plate apertures 230,331 light guide plates

231,333 circuit boards 232,332 light-emitting components

302 connecting element, 321 hook

The side area 341 of 334 backlight modules, 2331 reflector plate apertures

342, the side area 351 of 2332 reflector plates, 2341 anti-dazzling screen apertures

The side area 2011 of 352 anti-dazzling screens, 3011 output optical zone domains

2111, conductive part 2121,3131 separate layer apertures on 3111

2131,3121 lower conductive part 2301,3311 light guide plate apertures

2302 light directing site B light beams

Specific embodiment

In view of puzzlement caused by the prior art, the present invention provides a kind of illuminated keyboard that can solve prior art problem. The structure for illustrating illuminated keyboard of the present invention first, please refer to Fig. 3 and Fig. 4, Fig. 3 is that illuminated keyboard of the present invention is preferable in one Partial structurtes decomposition diagram in embodiment, and Fig. 4 is partial structurtes of the illuminated keyboard of the present invention in a preferred embodiment Diagrammatic cross-section.Illuminated keyboard 3 of the present invention includes multiple keys 30, switching circuit board 31, support plate 32, backlight module 33, anti- Piece 34 and anti-dazzling screen 35 are penetrated, multiple keys 30 are revealed in except illuminated keyboard 3.Switching circuit board is set to multiple keys 30 Lower section, function generate corresponding push button signalling for the triggering in response to multiple keys 30.Support plate 32 is set to switch electricity The lower section of road plate 31, and multiple keys 30 are connected to, and support plate 32 includes multiple hooks 321 and multiple support plate apertures 322.Backlight module 33 is set to the lower section of support plate 32, and function is to generate light beam B, and projecting beam B is to multiple keys 30. Reflector plate 34 is set in backlight module 33, and function is the reflected beams B, and anti-dazzling screen 35 is set to backlight module 34 and support Between plate 32, light beam B can be covered.

In Fig. 3 and Fig. 4, each key 30 includes 301, connecting elements 302 of a button cap and an elasticity Element 303, wherein there is output optical zone domain 3011 on each button cap 301, keep light beam B caused by backlight module 33 logical Output optical zone domain 3011 is crossed, and generates illumination effect.Button cap 301 is revealed in the outer of illuminated keyboard 3 and can be pressed by user, even The function of connecing element 302 is the hook 321 for connecting button cap 301 and support plate 32, and button cap 301 can be made relative to support Plate 32 moves up and down.Elastic element 303 passes through connecting element 302 and contacts respectively with button cap 301 and switching circuit board 31, It can be supported and touch-pressure switch circuit board 31 by button cap 301.

In this preferred embodiment, connecting element 302 is scissor connecting element, and elastic element 303 is elastic rubber, Multiple keys of this preferred embodiment are to control moving up and down for multiple button caps 301 with the actuation of multiple connecting elements 302, Multiple 303 touch-pressure switch circuit boards 31 of elastic element are controlled simultaneously, are only illustration, rather than as limit.In another preferable reality It applies in example, the also actuation using the connecting element of non-scissor connecting element type of multiple keys, such as desktop computer In addition to this moving up and down for magnetic means control button cap more can be used in volcano shape of the mouth as one speaks connection structure.

The structure of switching circuit board 31 will be illustrated next.Switching circuit board 31 includes upper wiring board 311, lower wiring board 312 And separate layer 313.Upper wiring board 311 is contacted with the elastic element 303 of corresponding key 30, and it is with multiple upper conductions Portion 3111.Lower wiring board 312 is located at the lower section of upper wiring board 311, and it has corresponding to the multiple of multiple upper conductive parts 3111 Lower conductive part 3121.For separate layer 313 between upper wiring board 311 and lower wiring board 312, function is that upper wiring board is isolated 311 and lower wiring board 312, the situation of accidentally touching occurs to avoid upper conductive part 3111 and corresponding lower conductive part 3121.And Separate layer 313 has multiple separate layer apertures 3131 corresponding to multiple upper conductive parts 3111.Wherein, upper conductive part 3111, under Key switch 314 is collectively formed in conductive part 3121 and separate layer aperture 3131.When switching circuit board 31 is touched by elastic element 303 When pressure, corresponding upper conductive part 3111 protrudes into corresponding separate layer aperture 3131 and connects with corresponding lower conductive part 3121 Touching, and generate push button signalling.In this preferred embodiment, switching circuit board 31 is film switch circuit, and upper wiring board 311, Lower wiring board 312 and separate layer 313 are with made by translucent material, so that light beam B passes through.

The structure of backlight module 33 will be illustrated next.Backlight module 33 include light guide plate 331, a plurality of light-emitting elements 332 with And circuit board 333, for light guide plate 331 between anti-dazzling screen 35 and reflector plate 34, function is that guidance light beam B is projected to out light Region 3011, and light guide plate has multiple light guide plate apertures 3311 and multiple light-guide devices (not shown in the figures).It is each to lead Tabula rasa aperture 3311 corresponds to a light-emitting component 332, and the function of light-guide device is that guidance light beam B leaves light guide plate 331, with It is projected to output optical zone domain 3011.The function of light-emitting component 332 is to generate light beam B, and circuit board 334 is set under reflector plate 34 Side and a plurality of light-emitting elements 332 are electrically connected at, a plurality of light-emitting elements 332 can be carried, and a plurality of light-emitting elements are given in power supply 332, make its running.In this preferred embodiment, light-emitting component 332 is lateral LED, and light-guide device, which can be used, leads Any one of light micro-structure, light directing site, light guide ink and guide-lighting texture structure, and circuit board 333 is flexible circuit board (FPC)。

On the other hand, reflector plate 34 is set between light guide plate 331 and circuit board 333, and reflector plate 34 is with multiple anti- Piece aperture 341 is penetrated, each reflector plate aperture 341 corresponds to a light guide plate aperture 3311, makes corresponding light-emitting component 332 can Protrude into reflector plate aperture 341 and light guide plate aperture 3311, whereby light beam B caused by light-emitting component 332 be able to project into Enter in light guide plate 331.Anti-dazzling screen 35 is set between support plate 32 and light guide plate 331, and anti-dazzling screen 35 has multiple anti-dazzling screens Aperture 351, each anti-dazzling screen aperture 351 correspond to a support plate aperture 322, light beam B are made to be obtained through anti-dazzling screen aperture 351 And support plate aperture 322 and be projected to output optical zone domain 3011.

When light-emitting component 332 generates light beam B, light beam B enters light guide plate 331 and is guided and left by multiple light-guide devices Light guide plate 331, following light beam B pass through corresponding anti-dazzling screen aperture 351, support plate aperture 322 and switching circuit board 31, To be projected to the output optical zone domain 3011 of button cap 301.On the other hand, segment beam B is had in light guide plate 331 not by light-guide device It guides and leaves light guide plate 331, those light beams B can be reflected by reflector plate 34 and be again introduced into light guide plate 331, with can be by guide-lighting member Part guides and is projected to output optical zone domain 3011.

The problem of in order to avoid side light leakage, illuminated keyboard 3 of the present invention use the following practice: at least the one of reflector plate 34 At least side border region 352 (being represented by dotted lines in Fig. 3) of side area 342 (being represented by dotted lines in Fig. 3) and anti-dazzling screen 35 By hot pressing technology or laser fusion technology combination reflector plate 34 and anti-dazzling screen 35, to coat backlight module 33 at least Side border region 334 is in wherein.During carrying out hot pressing or laser fusion, the side area 342 of reflector plate 34 and The side area 352 of anti-dazzling screen 35 forms an at least sealing structure 36 in response to its running, to avoid light beam B by backlight module 33 At least side border region 334 overflow, and sealing structure 36 is as shown in Figure 4.

The touched operation situation of the button cap 301 of illuminated keyboard 3 of the present invention will be illustrated next.Referring to Fig. 3, when The finger force of user is when pressing button cap 301,301 stress of button cap and push against connecting element 302 down, and connecting element 302 swing relative to support plate 32.On the other hand, button cap 301 pushes against corresponding elastic element 303 down and brings it about Deformation and touch-pressure switch circuit board 31, with the key switch 314 in trigger switch circuit board 31, so that switching circuit board 31 exports Corresponding push button signalling.And when user stop press button cap 301 when, the no longer stress of button cap 301 and stop pressing bullet Property element 303 so that elastic element 303 in response to its elasticity and restored to the original state by deformed state, while provide up elasticity it is extensive Multiple power gives button cap 301.At this point, the button cap 301 that up moves drives connecting element 302 to swing, and button cap 301 be able to it is extensive The multiple position to before being touched.

Specifically have two, first, illuminated keyboard 3 of the present invention do not limit reflector plate 34 side area 342 and The side area 352 of anti-dazzling screen 35 carries out hot pressing or laser fusion and forms the quantity of sealing structure 36, if only in reflector plate 34 side border region 342 and the side border region 352 of anti-dazzling screen 35 form a sealing structure 36, then reflector plate 34 The fitting practice of the prior art then can be used in its excess-three side area 342 and its excess-three side area 352 of anti-dazzling screen 35.This The practice can reduce the structure of a fitting of illuminated keyboard 3, therefore can reduce the volume of illuminated keyboard 3.It, can in a preferable practice Four sealing structures are respectively formed in four side areas 342 of reflector plate 34 and four side areas 352 of anti-dazzling screen 35 36, to achieve the effect that optimal volume is lightening.

Second, the assembling flow path of illuminated keyboard 3 of the present invention is as follows: first to a certain side area 342 of reflector plate 34 and The corresponding side area 352 of anti-dazzling screen 35 carries out hot pressing or laser fusion, and forms a sealing structure 36, next Light guide plate 331, a plurality of light-emitting elements 332 and circuit board 333 are configured in the side of sealing structure 36.Later, sealing is anti- Its excess-three side area 342 of piece 34 and its excess-three side area 352 of anti-dazzling screen 35 are penetrated, with complete seal backlight module 33 In wherein.Finally, carrying out multiple keys 30, switching circuit board 31, support plate 32 and the anti-dazzling screen 35 integrated, backlight Combination between module 33 and reflector plate 34.

As described above, illuminated keyboard of the present invention is stretched using the side area of reflector plate and the side area of anti-dazzling screen Out except backlight module, and the side area of reflector plate and the side area of anti-dazzling screen be subjected to hot pressing or laser fusion and Sealing structure is formed, light beam is can avoid whereby and is overflowed by the side area of backlight module, also that is, can avoid the situation of side light leakage Occur.Compared with bonding structure in the prior art, the sealing structure formed by hot pressing or laser fusion will not be occupied Excessive space, to save the available space in illuminated keyboard, and it is lightening to be conducive to progress volume.

The foregoing is merely presently preferred embodiments of the present invention, the claims being not intended to limit the invention, therefore all Other equivalent changes or modification completed down without departing from spirit disclosed in this invention, the right for being intended to be limited solely by the application are wanted It asks in book.

Claims (9)

1. a kind of illuminated keyboard, comprising:

An at least key is revealed in except the illuminated keyboard；

One switching circuit board is set to the lower section of an at least key, to because that should generate phase due at least triggering of a key A corresponding push button signalling；

One support plate, is set to the lower section of the switching circuit board, and is connected to an at least key；

One backlight module is set to the lower section of the support plate, to generate a light beam, and projects the light beam at least one presses to this Key；

One reflector plate is set in the backlight module, to reflect the light beam；And

One anti-dazzling screen is set between the backlight module and the support plate, to cover the light beam；Wherein, the one of the reflector plate The side border region of side area and the anti-dazzling screen forms a sealing structure by hot pressing technology or laser fusion technology, It is overflowed to avoid the light beam by the side border region of the backlight module.

2. illuminated keyboard as described in claim 1, wherein the backlight module includes:

One light guide plate, between the anti-dazzling screen and the reflector plate, to guide the light beam to be projected to an at least key, and The light guide plate has a light guide plate aperture；

One light-emitting component protrudes into the light guide plate aperture, to generate the light beam；And

One circuit board is set to the lower section of the reflector plate and is electrically connected at the light-emitting component, to carry the light-emitting component.

3. illuminated keyboard as claimed in claim 2, wherein the reflector plate is set between the light guide plate and the circuit board, and The reflector plate has a reflector plate aperture, which corresponds to the light guide plate aperture, so that the light-emitting component is protruded into this anti- Penetrate piece aperture and the light guide plate aperture.

4. illuminated keyboard as described in claim 1, wherein at least a key includes: for this

One button cap is revealed in except the illuminated keyboard, and each button cap has an output optical zone domain, makes the light beam by least The one output optical zone domain；

One connecting element, between the support plate and the button cap, to connect the support plate and the button cap and make this Button cap is moved up and down relative to the support plate；And

One elastic element presses the switch to be supported by the button cap between the button cap and the switching circuit board Circuit board.

5. illuminated keyboard as claimed in claim 4, wherein when the button cap is touched, which is swung, and this is pressed Keycap supports the elastic element, and making the elastic element, deformation occurs and presses the switching circuit board, which generates phase The corresponding push button signalling；And when the button cap is no longer touched, which is restored by deformation and provides an elastic force The button cap is given, the button cap is made to be moved to the position before not being touched.

6. illuminated keyboard as claimed in claim 4, wherein the support plate includes an at least support plate aperture, each support Plate aperture corresponds to the output optical zone domain, and the light beam is made to be obtained through the support plate aperture and be projected to the output optical zone domain.

7. illuminated keyboard as claimed in claim 6, wherein the anti-dazzling screen is set between the support plate and light guide plate, and should Anti-dazzling screen has an at least anti-dazzling screen aperture, and each anti-dazzling screen aperture corresponds to the support plate aperture, enables the light beam The output optical zone domain is projected to across the anti-dazzling screen aperture and the support plate aperture.

8. illuminated keyboard as claimed in claim 4, wherein the switching circuit board includes:

Wiring board on one, and the resilient element contacts, and wiring board has conductive part on one on this；

Wiring board once, lower section of wiring board on this, and the lower wiring board have conductive part；

One separate layer is located on this between wiring board and the lower wiring board, to separate conductive part and the lower conductive part on this, The separate layer has a separate layer aperture；Wherein, when the elastic element triggers wiring board on this, conductive part protrudes into this point on this Interlayer aperture and contacted with the lower conductive part, so that the switching circuit board is exported the push button signalling.

9. illuminated keyboard as claimed in claim 8, wherein wiring board, the lower wiring board and the separate layer are with saturating on this Made by luminescent material, so that the light beam passes through.