CN201274249Y - Press-button light guidance construction - Google Patents
Press-button light guidance construction Download PDFInfo
- Publication number
- CN201274249Y CN201274249Y CNU2008202078693U CN200820207869U CN201274249Y CN 201274249 Y CN201274249 Y CN 201274249Y CN U2008202078693 U CNU2008202078693 U CN U2008202078693U CN 200820207869 U CN200820207869 U CN 200820207869U CN 201274249 Y CN201274249 Y CN 201274249Y
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- China
- Prior art keywords
- light guide
- optical waveguide
- waveguide layer
- guide structure
- key light
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Abstract
The utility model discloses a light guide structure for a keystroke, which comprises a base layer, a rubber cushion layer, a light guide layer, a plurality of light sources and a keystroke. The rubber cushion layer is arranged on the base layer and is provided with a plurality of elastic support parts; the light guide part is arranged on the rubber cushion layer and comprises a surface which reflects the light sources, and a plurality of holes through which the elastic support parts can pass, so that the light sources can go across the rubber cushioning layer and be directly guided to the keystroke to bring better reflection effect. The light guide structure can reduce the number of the light sources and can reduce the generation of carbon film dark spots on the keystroke in the prior art.
Description
Technical field:
The utility model relates to a kind of light guide structure that button has back light that is used for; Be meant especially a kind of optical waveguide layer to be arranged between rubber spacer and the button portion, make light source can cross this rubber spacer, produce better reflecting effect, and reduce the means that in button portion, form the situation of carbon membrane stain.
Background technology:
Use electronics implements (for example calculator, mobile phone, the computer etc.) device of keyboard that one printed circuit board (PCB) is arranged, print electroplax and be provided with one and can respond keyboard and knock or press down, and produce the rubber spacer of a deflection; Rubber spacer has the contact of leading in a plurality of elasticity support sectors and the support sector, this lead the contact can be when keyboard be knocked and printed circuit board (PCB) form through switch control and be electrically connected.And a kind of backlight or illuminated keyboard that can use in the environment of night or low light brightness on every side has been a known technology.For example, TaiWan, China the 89212458th " backlight key ", TaiWan, China No. 94107422 " assembly of light-negative button ", and No. 94116321 " backlight type key-press module " patent case of TaiWan, China etc. all provide typical embodiment.In order to obtain the even brightness effect, they normally provide more than one light source or LED respectively below each button of keyboard, because quantity of light source is many, cost is higher, the circuit design configuration is complicated, the more high situation of power consumption so have; They more are not proposed to be applied in usually yet has large-area computer keyboard.
Prior art has also disclosed a kind of leaded light component or light guide plate used with lead means notion around the button of light source; For example TaiWan, China No. 94137063 " keyboard that possesses framework backlight ", No. 94107422 " assembly of light-negative button " patent case of TaiWan, China etc. provide typical embodiment respectively.In No. 94107422 " assembly of light-negative button " patent case of this TaiWan, China, disclosed on the interval between each adjacent key or each button around the position be provided with the leaded light component that the acryl material is made, so that will be configured in the light that the luminescence component below the button penetrates, derive from the button periphery.
No. 94137063 " keyboard that possesses framework backlight " patent case of above-mentioned TaiWan, China disclosed a kind of backlight key structure of more complicated; It defines light source conduction space between a base plate and is for the bridge plate that interlinked mechanism is set.The path in light source conduction space is provided with light guide section; The position of light guide section approximately is below the position near the button periphery, has the light of penetrating portion, with the lead direction of button of light, to form the effect backlight of keyboard.
No. 95124309 " keyboard with backlight function " patent case of TaiWan, China also is to have disclosed a kind of technology of using light guide plate; It has one and disposes a diffusing layer and a light guide plate below the rubber spacer of elasticity support sector or bell-shaped piece, in order to allow the direction of light source diffusion or guiding button.Just as those people that know this technology know; light guide plate or diffusing layer are arranged on structure kenel below the rubber spacer; regular meeting allows light can not cross this elasticity support sector or bell-shaped piece smoothly; therefore there is part light can't arrive the button there; so that on button, produce the situation of carbon membrane stain or shadow, and that this situation is not for we is desired.
Representational, these reference datas have shown that relevant light source and light guide structure are applied in the technology of button or keyboard aspect; They also reflect these light guide structure designs more existing problems in the situation of some application.If the institutional framework of leaded light is considered in the overline design, it is existing that its structure is different from, and can change its use kenel, and be different from old law; In fact, also can increase its range of application.For example, its structural design is being met under the simple condition, possess the generation that carbon membrane stain on the light source configuration quantity that can reduce known structure and the button is arranged simultaneously; Or further improve means such as reflecting effect in the old law; And these problems in above-mentioned reference data all not by teaching or concrete the exposure.
The utility model content:
Technical problem to be solved in the utility model is: at above-mentioned the deficiencies in the prior art, provide a kind of key light guide structure, can reduce the generation of carbon membrane stain on the light source configuration quantity of known structure and the button, to improve the situations such as reflecting effect in the old law.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of key light guide structure, comprise a basic unit, a rubber spacer, an optical waveguide layer, several light sources and a button portion, this rubber spacer is disposed on this basic unit, has several elasticity support sectors on it; Be characterized in: described optical waveguide layer is configured on the rubber spacer, and this optical waveguide layer has a periphery, but and include the hole that the surface of a reflection source and several allow that described elasticity support sector passes through, and with light source this button portion of leading.
This button portion that light source is led that the reflecting surface that above-mentioned each hole has inclined-plane and this optical waveguide layer is common.
Above-mentioned optical waveguide layer bottom surface forms the structure of reflective protruding grain, increases the reflecting effect of optical waveguide layer.
This optical waveguide layer be arranged on the top of rubber spacer and button portion below.
So, the elasticity support sector that the light of this optical waveguide layer guiding can be crossed rubber spacer smoothly makes most light source or light directly be directed to this button portion; And each hole includes an inclined-plane, can increase the effect of optical waveguide layer with the light guiding button portion of light source ejaculation; This optical waveguide layer includes a surface, can be used to the light that light source sends is reflexed to button portion, helps to reduce manufacturing cost and power consumption.
For novelty, the characteristics that the utility model had, and other purpose and effect, will cooperate appended graphic explanation in detail hereinafter, and be tending towards understanding.
Description of drawings:
Fig. 1 is a STRUCTURE DECOMPOSITION schematic diagram of the present utility model.
Fig. 2 is the structure cross-sectional schematic of Fig. 1.
Fig. 3 is the utility model embodiment schematic diagram; Wherein, this arrow situation of being guided of display light source or light partly.
Label declaration:
10 basic units, 20 rubber spacers
21 end faces, 22 elasticity support sectors
30 optical waveguide layers, 31 peripheries
32 light sources, 33 surfaces
35 inclined-planes, 34 holes
40 button portions
Embodiment:
See also Fig. 1 and Fig. 2, key light guide structure of the present utility model comprises a circuit board basic unit in the embodiment that is adopted, generally with Ref. No. 10 expressions.One is arranged on the rubber spacer 20 in the basic unit 10, and it has the elasticity support sector 22 of a plurality of bell-shaped pieces that protrude to an end face 21; Elasticity support sector 22 defines an inner space and leads the contact (not shown).When leading the contact when contacting, can form an electrically conducting state with circuit board basic unit 10; The elastic mechanism that elasticity support sector 22 is had is allowed it when button is knocked or presses down, and produces allowing of a deflection and leads contact and circuit board basic unit 10 and set up above-mentioned electrically conducting or not on-state (this partly belongs to known technology, so no longer describe in detail).
In the embodiment that is adopted, an optical waveguide layer 30 be configured in this rubber spacer 20 above; Periphery 31 at optical waveguide layer 30 is provided with a plurality of light sources 32.Optical waveguide layer 30 can select reflectorized material to make, or coats the kenel of reflective sheeting on optical waveguide layer 30, or the kenel of coating reflecting material on optical waveguide layer 30, forms the organizational patterns of a similar film or coating, but and is formed with the surface 33 of a reflection source 32.
In a preferred embodiment, the elasticity support sector 22 to should rubber spacer 20 makes optical waveguide layer 30 include a plurality of holes 34 of allowing that this elasticity support sector 22 passes through, make optical waveguide layer 30 can cover rubber spacer 20 above.Fig. 2 demonstrates the kenel that the limit of defining each hole 34 becomes an inclined-plane 35 especially, can with the surface 33 of optical waveguide layer 30 common with light source 32 guiding one button portion 40.Therefore, in the embodiment that is adopted, button portion 40 be configured in optical waveguide layer 30 above, tend to choose light transmissive material and make.
See also Fig. 3, described the light that light source 32 sends especially and be directed to button portion 40 through the reflecting surface 33 of optical waveguide layer 30; The inclined-plane 35 that Fig. 3 also demonstrates hole 34 also can up reflex to button portion 40 with the light beam of light source 32, so the effect backlight of button portion 40 can be than known structure ideal.Apprehensible is in the embodiment of a correction, and the angle of inclination on the inclined-plane 35 in this hole 34 can be changed.
In another feasible embodiment, the bottom surface of this optical waveguide layer 30 can form the structure of reflective protruding grain, and this helps to increase the reflecting effect of optical waveguide layer 30.
Typically, this key light guide structure has comprised following design consideration under the condition that provides a structure to simplify:
1. in order to consider more satisfactory reflective or light guide effect, the allocation position or the order of above-mentioned basic unit 10, rubber spacer 20, optical waveguide layer 30 and button portion 40 are to arrange through special design and improvement; When optical waveguide layer 30 be arranged on rubber spacer 20 above and button portion 40 below the time, the elasticity support sector 22 that the light of its guiding can be crossed rubber spacer 20 smoothly, make most light source 32 or light directly be directed to this button portion 40, on button, form the situation of carbon membrane stain or shadow in the picture old law, will be reduced to minimum as far as possible.
2. in order to make optical waveguide layer 30 configurable on rubber spacer 20, and allow that button portion 40 presses down the operation of rubber spacer 20 (electrically conducting with formation), make optical waveguide layer 30 have the structure kenel in a plurality of holes 34, be required especially.And each hole 34 is preferable includes an inclined-plane 35, increases the effect of the light guiding button portion 40 that optical waveguide layer 30 penetrates light source 32.
3. this optical waveguide layer 30 also includes a surface 33, is used for the light that light source 32 sends is reflexed to the kenel of button portion 40; Therefore, this light guide structure is compared to known structure, is to allow that using less light source 32 is configured in the periphery 31 of optical waveguide layer 30, and do not need as known structure in order to have comparatively ideal effect backlight that corresponding each button is provided with a lot of light sources or LED; This helps to reduce manufacturing cost and power consumption.
So the utility model provides an effective key light guide structure; Its space kenel is different from prior art, and the function that has in the old law not had, and has obviously represented sizable progress.
Only, the above is a possible embodiments of the present utility model only, is not to be used for limiting the scope that the utility model is implemented, and promptly all equalizations of being done according to the utility model claim change and modify, and are all the utility model claim and contain.
Claims (13)
1. a key light guide structure comprises a basic unit, a rubber spacer, an optical waveguide layer, several light sources and a button portion, and this rubber spacer is disposed on this basic unit, has several elasticity support sectors on it; It is characterized in that: described optical waveguide layer is configured on the rubber spacer, and this optical waveguide layer has a periphery, but and include the hole that the surface of a reflection source and several allow that described elasticity support sector passes through, and with light source this button portion of leading.
2. key light guide structure as claimed in claim 1; It is characterized in that: described light source is configured in the periphery of optical waveguide layer.
3. key light guide structure as claimed in claim 1 or 2; It is characterized in that: be coated with reflective sheeting on the described optical waveguide layer.
4. key light guide structure as claimed in claim 1 or 2; It is characterized in that: be coated with reflecting material on the described optical waveguide layer.
5. key light guide structure as claimed in claim 1 or 2; It is characterized in that: described hole includes an inclined-plane.
6. key light guide structure as claimed in claim 3; It is characterized in that: described hole includes an inclined-plane.
7. key light guide structure as claimed in claim 4; It is characterized in that: described hole includes an inclined-plane.
8. key light guide structure as claimed in claim 1 or 2; It is characterized in that: the bottom surface of described optical waveguide layer has reflective protruding grain.
9. key light guide structure as claimed in claim 3; It is characterized in that: the bottom surface of described optical waveguide layer has reflective protruding grain.
10. key light guide structure as claimed in claim 4; It is characterized in that: the bottom surface of described optical waveguide layer has reflective protruding grain.
11. key light guide structure as claimed in claim 5; It is characterized in that: the bottom surface of described optical waveguide layer has reflective protruding grain.
12. key light guide structure as claimed in claim 1 or 2; It is characterized in that: described optical waveguide layer be arranged on the top of rubber spacer and button portion below.
13. key light guide structure as claimed in claim 5; It is characterized in that: described optical waveguide layer be arranged on the top of rubber spacer and button portion below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202078693U CN201274249Y (en) | 2008-08-13 | 2008-08-13 | Press-button light guidance construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202078693U CN201274249Y (en) | 2008-08-13 | 2008-08-13 | Press-button light guidance construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201274249Y true CN201274249Y (en) | 2009-07-15 |
Family
ID=40884591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202078693U Expired - Fee Related CN201274249Y (en) | 2008-08-13 | 2008-08-13 | Press-button light guidance construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201274249Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034628A (en) * | 2009-09-28 | 2011-04-27 | 纬创资通股份有限公司 | Key structure with light transmission and relevant electronic device thereof |
| CN102043187A (en) * | 2010-10-29 | 2011-05-04 | 苏州茂立光电科技有限公司 | Light guide plate and backlight module |
| CN105299530A (en) * | 2015-09-30 | 2016-02-03 | 上海摩软通讯技术有限公司 | Light source module and electronic equipment |
-
2008
- 2008-08-13 CN CNU2008202078693U patent/CN201274249Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034628A (en) * | 2009-09-28 | 2011-04-27 | 纬创资通股份有限公司 | Key structure with light transmission and relevant electronic device thereof |
| CN102034628B (en) * | 2009-09-28 | 2014-04-09 | 纬创资通股份有限公司 | Key structure with light transmission and relevant electronic device thereof |
| CN102043187A (en) * | 2010-10-29 | 2011-05-04 | 苏州茂立光电科技有限公司 | Light guide plate and backlight module |
| CN105299530A (en) * | 2015-09-30 | 2016-02-03 | 上海摩软通讯技术有限公司 | Light source module and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |