CN201196914Y

CN201196914Y - illuminated keyboard

Info

Publication number: CN201196914Y
Application number: CNU2007203023091U
Authority: CN
Inventors: 李政儒; 詹嘉弘
Original assignee: Wistron Corp
Current assignee: Wistron Corp
Priority date: 2007-12-26
Filing date: 2007-12-26
Publication date: 2009-02-18
Anticipated expiration: 2017-12-26

Abstract

The utility model discloses a luminous keyboard, which comprises a circuit board, a plurality of metal elastic sheets, a light guide film, a plurality of pressing units and a luminous unit; the light guide film enables the metal elastic sheet to be positioned on the upper side of the circuit board; the penetration hole of the light guide film is used for accommodating the convex part of the pressing unit; the light-emitting unit is arranged on the side edge of the light guide film and used for emitting light to the light guide film, and the light enters the light guide film to be transmitted after being emitted from the light-emitting unit; the light guide film is used for guiding light to the protruding part and guiding the light to the surface of the pressing unit through the protruding part, so that the pressing unit emits light, the light guide effect can be achieved without additionally arranging a light guide sheet on the light-emitting keyboard, the height of the light-emitting keyboard can be reduced, the assembly tolerance can be reduced, the material of the light guide sheet can be reduced, the manufacturing procedure of the light guide sheet is not required to be combined, and the manufacturing cost can be saved.

Description

Illuminated keyboard

Technical field

The utility model relate to can be luminous button, especially relate to the improvement of the light guide structure of illuminated keyboard.

Background technology

But the patent that many relevant illuminated keyboards are arranged, for example the keyboard structure of the Nonopaque type of M313281 number announcement of TaiWan, China patent comprises: a circuit board; One first elastic layer is configured on the circuit board, has on it that thin shrapnel and pastes on thin shrapnel and is the metal clips of corresponding configuration with circuit board; One second elastic layer is configured on this first elastic layer, is made up of the auxilliary tabula rasa that a light guide plate and is configured on the light guide plate, have a plurality of leaded light particles on this light guide plate, and another side convexes with the convex body of a plurality of corresponding metal clipss; One light shield layer is located on this auxilliary tabula rasa, is a hollow hole corresponding to this leaded light particle place; And a button group, be configured on the light shield layer.

The key-press module that other TaiWan, China patent discloses for M313257 number comprises: a touch control layer has the light guiding surface that touches that a press surface and is formed at the press surface below; One light guide plate, what be located at touch control layer touches light guiding surface below, this light guide plate comprises a light lead layer and an auxilliary photosphere, this light lead layer is a soft lamellar body, it has a reflecting surface, be provided with a plurality of light guide sections on reflecting surface, this auxilliary photosphere is a hard printing opacity lamellar body, and its correspondence stacks above the reflecting surface of light lead layer; And a light source, be located at a side of light guide plate, in order to the side of light from auxilliary photosphere is shining into, break forth by the reflecting surface and the light guide section reflection of light lead layer again.

The known structure of utilizing the light guide plate leaded light to illuminated keyboard mainly utilizes binding film bonding to close the metal clips of illuminated keyboard below, and metal clips is positioned on the circuit board; Make conjunctival top in conjunction with light guide plate again, with ray guidance to illuminated keyboard.

The utility model content

Reduce the height of illuminated keyboard and promote its luminous efficacy for further, and propose the utility model.

Main purpose of the present utility model is to provide a kind of illuminated keyboard, make the function of the light guiding film of fixing metal shell fragment with leaded light, therefore need not install light guide sheet additional, can reduce the height of illuminated keyboard and reduce the assembling tolerance, and can reduce the material of light guide sheet and not need fabrication schedule in conjunction with light guide sheet, can save manufacturing cost.

Another purpose of the present utility model is providing a kind of illuminated keyboard, can promote the luminous efficacy of illuminated keyboard.

The purpose of this utility model is achieved in that promptly provides a kind of illuminated keyboard, comprising:

One circuit board is provided with a plurality of electric terminals;

A plurality of shell fragments correspond respectively to these electrical equipment contacts and are arranged on this circuit board;

One light guiding film is respectively with this circuit board and these shell fragments contact and this light guiding film is respectively equipped with at least one through hole corresponding to the part scope of these shell fragments;

One lamellar body is provided with a plurality of unit of pushing; This is pushed the unit and has a protuberance, in order to press these shell fragments, makes the touched part of these shell fragments contact this electric terminal of this circuit board;

One luminescence unit is incorporated into this circuit board; This luminescence unit places the side of this light guiding film, and light enters in this light guiding film after the emission of this luminescence unit and transmits;

Wherein, ccontaining this protuberance of this through hole; And light is led to this protuberance through this light guiding film, and is directed to the surface that this pushes the unit through this protuberance.

Advantage of the present utility model is, it can make illuminated keyboard not need additionally to install additional the effect that light guide sheet can reach leaded light, can reduce the height of illuminated keyboard and reduce the assembling tolerance, and can reduce the material of light guide sheet and not need fabrication schedule, can save manufacturing cost in conjunction with light guide sheet.

Other purposes of the present utility model, effect see also drawings and Examples, are described in detail as follows.

Description of drawings

Fig. 1 is for looking schematic diagram on the utility model first embodiment illuminated keyboard;

Fig. 2 is the partial cutaway schematic of the utility model first embodiment illuminated keyboard;

Schematic diagram when Fig. 3 A is pushing the unit and being pressed of the utility model first embodiment illuminated keyboard;

Fig. 3 B is the enlarged diagram of part-structure among Fig. 3 A;

Fig. 4 is the partial cutaway schematic of the utility model second embodiment illuminated keyboard.

The main element symbol description

10,20 illuminated keyboards, 11 circuit boards

111,112 electric terminals, 12 metal clipss

121 protuberances, 13 light guiding film

131 reflectorized materials, 132 through holes

133 sides, 14,21 lamellar bodies

140,210 push unit 141,211 bottoms

142,212 protuberances, 143 bulge loops

144 surperficial 15 luminescence units

213 protruding retainings

Embodiment

See also Fig. 1, shown in Figure 2.The illuminated keyboard 10 of the utility model first embodiment, as shown in Figure 1, in order to the height that reduces keyboard and increase the luminous efficacy person, this illuminated keyboard 10 comprises that circuit board 11, metal clips 12, light guiding film 13, lamellar body 14 and luminescence unit 15 form, as shown in Figure 2.

The top configuration metal clips 12 of circuit board 11; Circuit board 11 tops are provided with and metal clips 12 corresponding two electric terminals 111,112.The section of metal clips 12 is the shape that arcuation protrudes.Two electric terminals 111,112 are positioned at the below of the protuberance 121 of metal clips 12.Metal clips 12 of the present utility model also can other materials shell fragment replace, push unit 140 through touching, and make the protuberance 121 of metal clips 12 be pressed into two electrical equipment contacts 111,112 on the circuit board 11, make electrical function conducting on the circuit board 11.Light guiding film 13 can be transparent polycarbonate membrane (PC Film), alkyd resin film (PET Film) or acryl resin film (PMMA Film), surface thereof can further be coated with for example reflectorized material 131 of white Wealthy, increases light guide effect to reduce leaded light consumption.The bottom of light guiding film 13 bond respectively circuit board 11 and metal clips 12 make metal clips 12 be located in the top of circuit board 11; Light guiding film 13 is provided with through hole 132, and through hole 132 is corresponding to the part scope of the protuberance 121 of metal clips 12.

Lamellar body 14 is provided with a plurality of unit 140 of pushing; The bottom 141 of pushing unit 140 is provided with protuberance 142 and the bulge loop 143 that protrudes downwards; Bulge loop 143 is positioned at the outside of protuberance 142.The length that the length that bulge loop 143 protrudes is downwards protruded downwards less than protuberance 142.The through hole 132 ccontaining protuberances 142 of pushing unit 140 of light guiding film 13.The aperture D1 of through hole 132 greater than the outer diameter D 2 of protuberance 142 less than the aperture D3 of bulge loop 143, as shown in Figure 2.

Luminescence unit 15 combined circuit plates 11 place the side 133 of light guiding film 13, and light enters this light guiding film 13 and transmit after these luminescence unit 15 emissions, wherein, and these through hole 132 ccontaining these protuberances 121; And light is led to this protuberance 121 through this light guiding film 13, and is directed to the surface 144 that this pushes unit 140 through this protuberance 121.Luminescence unit 15 can be the light source of light-emitting diode (LED).

See also shown in Fig. 3 A, Fig. 3 B.When the user presses on the surface 144 of pushing unit 140, make metal clips 12 distortion and, make 111,112 conductings of two electric terminals by two electric terminals 111,112 that touch circuit board 11 tops.The place that this moment, metal clips 12 tops were suppressed by protuberance 142 forms by middle lowest part respectively to the upwardly extending shape of its outside convex arc shaped, the light that helps being incident upon metal clips 12 tops reflexes to protuberance 142, and be directed to the surface 144 of pushing unit 140, thereby can increase the luminous efficacy of pushing unit 140.When pushing unit 140 pressed metal shell fragments 12, when making metal clips 12 flexural deformations, bulge loop 143 can be assisted the distortion of light guiding film 13, provide the user preferable push feel, and can support and push unit 140.

See also shown in Figure 4.The illuminated keyboard 20 of the utility model second embodiment comprises that circuit board 11, metal clips 12, light guiding film 13, lamellar body 21 and luminescence unit 15 form.

The lamellar body 21 of the utility model second embodiment is provided with a plurality of unit 210 of pushing; The bottom 211 of pushing unit 210 is provided with protuberance 212 and the protruding retaining 213 that protrudes downwards; The inboard of protruding retaining 213 is connected with the outside of protuberance 212.The length that the length that protruding retaining 213 protrudes is downwards protruded downwards less than protuberance 212.The through hole 132 ccontaining protuberances 212 of pushing unit 210 of light guiding film 13.The aperture E1 of through hole 132 greater than the external diameter E2 of protuberance 212 less than the external diameter E3 of protruding retaining 213.

The illuminated keyboard 20 of the utility model second embodiment, except the lamellar body 14 of lamellar body 21 and above-mentioned first embodiment was slightly different, all the other elements were identical with the element of the illuminated keyboard 20 of first embodiment, and have identical marriage relation and light guide effect.

The utility model makes illuminated keyboard not need additionally to install additional the effect that light guide sheet can reach leaded light, can save the man-hour and the material cost of assembling light guide sheet.It is 0.25mm (millimeter) that in addition existing light guide sheet stacks conjunctival minimum thickness, if only use light guiding film of the present utility model, its thickness can be reduced to 0.125mm, so the utility model can reduce the height of illuminated keyboard, and can reduce and assemble tolerance.Again if under the situation of not considering thickness, the thickness of known light guide sheet is about 0.125mm, under the identical situation that stacks thickness 0.25mm, the thickness of light guiding film of the present utility model can be 0.25mm, thick being twice approximately of more known light guide sheet and can significantly improve leaded light usefulness, and the reflection function of complexed metal shell fragment, can promote the luminous efficacy of illuminated keyboard.

Claims

1. A luminous keyboard, characterized in that it comprises: a circuit board, which is provided with a plurality of electrical contacts; a plurality of shrapnels, which are respectively arranged on the circuit board corresponding to the plurality of electrical contacts; a light guide film, respectively connected to the circuit The plate is in contact with the plurality of elastic pieces and the light guide film is respectively provided with at least one penetration hole corresponding to the partial range of the plurality of elastic pieces; the sheet body is provided with a plurality of pressing units; the pressing unit has a protruding part for Touching and pressing the elastic pieces, so that the pressed parts of the multiple elastic pieces contact the electrical contacts of the circuit board; the light emitting unit is combined with the circuit board; the light emitting unit is placed on the side of the light guide film, and the light comes from After the light-emitting unit is emitted, it enters the light guide film and transmits; wherein, the penetration hole accommodates the protrusion; and the light is guided to the protrusion through the light guide film, and guided by the protrusion to the surface of the pressing unit.

2. The luminous keyboard as claimed in claim 1, wherein the pressing unit is further provided with a protruding ring, and the protruding ring is located outside the protruding portion.

3. The luminous keyboard as claimed in claim 2, wherein the protruding height of the protruding ring is smaller than the protruding height of the protruding part.

4. The luminous keyboard as claimed in claim 3, wherein an aperture of the through hole is smaller than an aperture of the protruding ring.

5. The luminous keyboard according to claim 4, wherein the light guide film is a polycarbonate film, a polyester resin film or an acrylic resin film.

6. The luminous keyboard as claimed in claim 5, wherein the light guide film is bonded to the circuit board and the plurality of elastic pieces.

7. The luminous keyboard according to claim 6, wherein the surface of the light guide film is coated with reflective material.

8. The luminous keyboard as claimed in claim 7, wherein the plurality of elastic pieces are metal elastic pieces.

9 . The luminous keyboard according to claim 8 , wherein the cross section of the metal dome is arc-shaped and convex. 10 .

10 . The luminous keyboard according to claim 1 , wherein the pressing unit is further provided with a protrusion; the inner side of the protrusion is connected to the outer side of the protrusion. 11 .

11. The luminous keyboard as claimed in claim 10, wherein the protrusion height of the protrusion is smaller than the protrusion height of the protrusion.

12. The luminous keyboard as claimed in claim 11, wherein the diameter of the through hole is smaller than the diameter of the protruding ring.

13. The luminous keyboard as claimed in claim 12, wherein the light guide film is polycarbonate film, polyester resin film or acrylic resin film.

14. The luminous keyboard as claimed in claim 13, wherein the light guide film is bonded to the circuit board and the plurality of elastic pieces.

15. The luminous keyboard according to claim 14, wherein a surface of the light guide film is coated with a reflective material.

16. The luminous keyboard as claimed in claim 15, wherein the plurality of elastic pieces are metal elastic pieces.

17. The luminous keyboard according to claim 16, wherein the section of the metal dome is arc-shaped and convex.

18. The luminous keyboard as claimed in claim 1, wherein the light guide film is polycarbonate film, polyester resin film or acrylic resin film.

19. The luminous keyboard as claimed in claim 1, wherein the light guide film is bonded to the circuit board and the plurality of elastic pieces.

20. The luminous keyboard according to claim 1, wherein the surface of the light guide film is coated with reflective material.