CN205487877U - Backlight keyboard - Google Patents

Abstract

The utility model discloses a backlight keyboard, its top -down include key cap, elastomer, conducting wire board, bottom plate and backlight unit in proper order, and this key cap and bottom plate are coupled through the scissors, and this elastomer is used for supporting the key cap and reaches the conducting wire board with the pressing force on the key cap makes line conduction, and backlight unit is including the emitting diode that passes bottom plate and electrically conductive circuit board connection and be located bottom plate below, and the light guide plate of optical transmission to the key cap that sends this emitting diode. The utility model discloses provide the light source with emitting diode and electrically conductive circuit board connection, has cancelled the flexible printed circuit, FPC among traditional backlight unit, greatly reduced manufacturing cost, simultaneously, more former backlight unit has saved the space, reduces whole backlight keyboard's thickness, has improved NOT AND backlight keyboard's in a poor light material sharing nature, material and die cost reduce simultaneously.

Description

Backlight keyboard

Technical field

This utility model relates to a kind of keyboard, particularly to a kind of backlight keyboard.

Background technology

It is luminous that backlight keyboard is mainly reflected in keyboard or panel, can also can be clear in the case of not turning on light night See button letter, the most convenient for process the personnel of affairs at night, and keyboard appearance is the most attractive in appearance.When When computer receives keyboard percussion instruction, the optical signal that keyboard connects light emitting diode is luminous.

Backlight keyboard is mainly made up of keyboard components and backlight module, and traditional backlight module includes FPC, soft Wiring board is connected with light emitting diode, thus realizes the offer of light source, and on the one hand the cost of FPC is the highest so that The production cost of the more non-backlight keyboard of backlight keyboard is greatly improved；On the other hand, the existence of FPC makes backlight key The thickness of dish is greatly increased, it is impossible to realize sharing of backlight and non-backlight keyboard material, solves in the urgent need to seeking method State problem.

Utility model content

Utility model purpose: the purpose of this utility model be to provide a kind of can effectively save cost, reduction keyboard thickness Backlight keyboard.

Technical scheme: backlight keyboard described in the utility model, it includes keycap, elastomer, conduction the most successively Wiring board, base plate and backlight module, this keycap and base plate coupled by shears, and this elastomer is used for supporting keycap will Reaching conducting wire plate by pressure and make line conduction, backlight module include through base plate to be connected with conducting wire plate on keycap The optical transport that sends below base plate and by this light emitting diode of light emitting diode and being positioned to the light guide plate of keycap.

Light emitting diode in backlight module is connected through base plate with conducting wire plate, presses keycap, line conduction, luminescence The light that diode sends reflexes to keycap via light guide plate, it is achieved keyboard is luminous.

Preferably, backlight module also includes the brake sack being positioned at above light guide plate.Light is made by brake sack or black out ink Source is only reflected at keycap, focus utilization light source.

Or it is covered with black out ink in light guide plate surface.Use black out ink to substitute brake sack, backlight mould can be reduced further Group thickness.

Further, backlight module also includes the reflector plate being positioned at below light guide plate.Gathered by reflector plate or reflective ink Collect, reclaim a part of astigmatism, and reflexed to keycap, it is possible to improve keypad brightness further.

Or it is covered with reflective ink at light guide plate lower surface.Use reflective ink to replace reflecting piece, backlight can be reduced further The thickness of module.

Beneficial effect: compared with prior art, the utility model has the advantage of: (1) backlight keyboard of the present utility model, Light source is provided, compared to traditional backlight mould by being connected with conducting wire plate by the light emitting diode in backlight module Group, it is not necessary to use FPC can make lumination of light emitting diode, greatly reduce production cost, meanwhile, the more former back of the body Light module saves space, reduces the thickness of whole backlight keyboard, improves the material commonality of backlight and non-backlight keyboard, Material and die cost reduce simultaneously；(2) this utility model by print reflective ink, black out ink replace reflector plate, Brake sack, can reduce the thickness of backlight module further, make keyboard more frivolous, and practicality is higher.

Accompanying drawing explanation

Fig. 1 is the structural representation of backlight keyboard in prior art；

Fig. 2 is the installation diagram of backlight keyboard in prior art；

Fig. 3 is the structural representation of backlight module in prior art；

Fig. 4 is the structural representation of backlight keyboard of the present utility model；

Fig. 5 is the installation diagram of backlight keyboard of the present utility model；

Fig. 6 is the combinative structure schematic diagram of conducting wire of the present utility model plate and backlight module.

Detailed description of the invention

Below in conjunction with the accompanying drawings the technical solution of the utility model is described further.

As shown in Figures 1 to 3, traditional backlight keyboard is typically by the keycap 1 arranged from top to bottom, elastomer 2, conductor wire Road plate 3, base plate 4 and backlight module 5 form, and wherein, are coupled by shears 6 between keycap 1 and base plate 4.Tradition Backlight module 5 include light emitting diode 7, light guide plate 8, FPC 9, brake sack 11 and reflector plate 12, soft Property wiring board 9 is arranged on below light emitting diode 7, is connected with light emitting diode 7, so that light emitting diode 7 is luminous, In Fig. 3, the direction of arrow represents that light transmits direction, and base plate 4 arranges many places holes, and light sends from backlight module 5, Light reflects through the light guiding points 10 of light guide plate 8, is transferred on keycap 1 through the holes on base plate 4, it is achieved keyboard The function of bottom-emission.But, the cost of FPC 9 is the highest so that the more non-backlight of production cost of backlight keyboard Keyboard is greatly improved, and the more non-backlight keyboard of thickness that the existence of FPC makes backlight keyboard increases, it is impossible to real Existing backlight shares with non-backlight keyboard material.

As shown in figures 4-6, backlight keyboard of the present utility model includes that keycap 1 and base plate 4, keycap 1 and base plate 4 pass through Shears 6 couples, and is provided with conducting wire plate 3 between keycap 1 and base plate 4 and is positioned at the elasticity above conducting wire plate 3 Body 2, elastomer 2 is used for supporting keycap 1, and will pass to, on conducting wire plate 3, make circuit by pressure on keycap 1 Conducting；Backlight module 5 it is provided with below base plate 4.Backlight module 5 includes light emitting diode 7 and light guide plate 8, luminescence two Pole pipe 7 is connected through base plate 4 with conducting wire plate 3, and light guide plate 8 is positioned at below base plate 4；In Fig. 6, the direction of arrow Represent light transmission direction, press keycap 1, conducting wire plate 3 line conduction, the luminescence being connected with conducting wire plate 3 Diode 7 is luminous, and the light that it sends enters light guide plate 8, reflects, through base plate 4 through the light guiding points 10 of light guide plate 8 On holes be mapped to the back side of keycap 1, make keyboard luminous.Conducting wire plate 3 generally comprises upper layer circuit plate, lower layer line Road plate and insulating barrier between the two, light emitting diode 7 is attached to any layer of conducting wire plate 3.

Traditional backlight module and conducting wire plate are improved by this utility model, by the light-emitting diodes in backlight module 5 Pipe 7 is directly connected with conducting wire plate 3, eliminates the use of FPC 9, on the one hand saves former backlight module Space, reduce the thickness of backlight keyboard, improve the material commonality of backlight and non-backlight keyboard, material and mould and become This reduces simultaneously；On the other hand the production cost of backlight keyboard is significantly reduced.

Brake sack 11 can be provided above so that light source is only reflected at keycap 1, focus utilization light source at light guide plate 8, Reflector plate 12 also can be set below light guide plate 8, reclaim a part of astigmatism, and reflexed to keycap 1, it is possible to enter one Step improves the brightness of backlight keyboard.

Black out ink and reflective ink can also be respectively coated with to replace brake sack 11 in light guide plate 8 upper and lower surface With reflector plate 12, compared with traditional backlight module, eliminate brake sack and reflector plate, it is possible to reduce backlight key further The thickness of dish, reduces cost.

Claims (5)

1. a backlight keyboard, its include the most successively keycap (1), elastomer (2), conducting wire plate (3), Base plate (4) and backlight module (5), this keycap (1) and base plate (4) are coupled by shears (6), this elastomer (2) For supporting keycap (1) and by reaching conducting wire plate (3) by pressure and make line conduction on keycap (1), it is special Levying and be, described backlight module (5) includes the light emitting diode being connected through base plate (4) with conducting wire plate (3) And be positioned at base plate (4) lower section optical transport the leading to keycap (1) that sent by this light emitting diode (7) (7) Tabula rasa (8).

Backlight keyboard the most according to claim 1, it is characterised in that described backlight module (5) also includes being positioned at The brake sack (11) of described light guide plate (8) top.

Backlight keyboard the most according to claim 1, it is characterised in that described light guide plate (8) surface is covered with shading Ink.

4. according to the backlight keyboard according to any one of claim 1-3, it is characterised in that described backlight module (5) Also include the reflector plate (12) being positioned at described light guide plate (8) lower section.

5. according to the backlight keyboard according to any one of claim 1-3, it is characterised in that under described light guide plate (8) Surface is covered with reflective ink.