CN101789320A - Key device with variable luminous intensity - Google Patents
Key device with variable luminous intensity Download PDFInfo
- Publication number
- CN101789320A CN101789320A CN 201010123275 CN201010123275A CN101789320A CN 101789320 A CN101789320 A CN 101789320A CN 201010123275 CN201010123275 CN 201010123275 CN 201010123275 A CN201010123275 A CN 201010123275A CN 101789320 A CN101789320 A CN 101789320A
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- light
- key device
- tool
- changes
- light guide
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Abstract
The invention relates to a key device with variable luminous intensity. The key device comprises a light guide plate, at least one light-emitting component, a shading plate, at least one pressing unit and at least one light guide post, wherein the light-emitting component is arranged on at least one side face of the light guide plate and emits light rays towards the light guide plate; the shading plate is arranged on the light guide plate and comprises at least one through hole for the light rays to pass through; the pressing unit is arranged above the shading plate and comprises at least one key cap which moves up and down relative to the shading plate and comprises at least one non-light tight part; and the light post is provided with a light emitting surface connected to a lower surface of the pressing unit and a bottom surface which is opposite to the light emitting surface and faces the through hole, and a predetermined distance exists between a light entering surface of the light guide post and the shading plate. The key device has the advantage that: since the light guide post is a good light ray conductive medium, a user can observe the brightness difference on the key cap.
Description
Technical field
The present invention relates to a kind of input unit, relate in particular to the key device that a kind of tool luminosity changes.
Background technology
Use at night or low light source place for ease of the user, input unit inside such as computer keyboard or mobile phone key all are equiped with light-emitting device, allow the user can see the character symbols on the keyboard clearly and facility is knocked keyboard.
Yet the light-emitting device of input unit of the prior art utilizes the light guide plate of full slice system as backlight module mostly, it is backlight uniformly to make whole luminous button present, under the environment of user in low-light level, other people around its whole light-source brightness backlight may influence, add that slot between two adjacent buttons also has light and appears, form jamming light source, increase character symbols degree of difficulty on user's identifying keyboard on the contrary.
Summary of the invention
The technical issues that need to address of the present invention have provided the key device that a kind of tool luminosity changes, and are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: a light guide plate; At least one at least one side of this light guide plate and luminescence component that emits beam towards this light guide plate of being arranged at; One shadow shield; Described shadow shield is to be arranged on this light guide plate, and described shadow shield includes at least one perforation that supplies light to pass through; At least one unit of pushing; The described unit of pushing is to be arranged at this shadow shield top, and this is pushed unit pack and contains at least one keycap that moves up and down with respect to this shadow shield, and includes at least one transmittance section on this keycap; And at least one leaded light post; Described light beam has one and is connected in the exiting surface that this pushes a lower surface of unit, and one in contrast to this exiting surface and face the bottom surface of this perforation, and has a preset distance between the incidence surface of this leaded light post and this shadow shield.
Compared with prior art, the invention has the beneficial effects as follows: because the leaded light post is originally as good light transmitting medium, therefore drive this leaded light post and move up and down by pushing this keycap, the collected light number of this leaded light post also changes, and the user can be by perceiving bright dark difference on this keycap.
Description of drawings
Figure 1A is the profile of the key device that changes of the tool luminosity of first embodiment of the invention.
Figure 1B is the operation chart of the key device that changes of the tool luminosity of first embodiment of the invention.
Fig. 2 is the cutaway view of the key device that changes of the tool luminosity of third embodiment of the invention.
Fig. 3 A is the profile of the key device that changes of the tool luminosity of second embodiment of the invention.
Fig. 3 B is the operation chart of the key device that changes of the tool luminosity of second embodiment of the invention.
Fig. 4 A is the profile of the key device that changes of the tool luminosity of third embodiment of the invention.
Fig. 4 B is the operation chart of the key device that changes of the tool luminosity of third embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
The key device that provides a kind of tool luminosity to change is provided one of the present invention purpose.The key device that this tool luminosity changes includes a light guide plate, at least one luminescence component, a shadow shield, at least one unit and at least one leaded light post pushed.This luminescence component is to be arranged at least one side of this light guide plate and to emit beam towards this light guide plate, and this shadow shield is to be arranged on this light guide plate, includes at least one perforation, and this perforation is to pass through for light; This pushes the unit is to be arranged at this shadow shield top, and this is pushed unit pack and contains at least one keycap that moves up and down with respect to this shadow shield, and includes at least one transmittance section on this keycap; This leaded light post has one and is connected in the exiting surface that this pushes a lower surface of unit, and one in contrast to this exiting surface and face the incidence surface of this perforation, and has a preset distance between the incidence surface of this leaded light post and this shadow shield.
By the light that this luminescence component sent, be to penetrate, and be passed to those via this leaded light post and push cell surface, and outwards penetrate by this transmittance section via this perforation; When this is pushed the unit and is pressed, can drive the leaded light post and move towards this perforation, the light that enters in this leaded light post increases thereupon, makes this transmittance section produce light and shade and changes.
Cooperate and consult Figure 1A, the key device that this tool luminosity changes includes a light guide plate 100, at least one luminescence component 200, a reflector plate 300, a shadow shield 400, at least one unit 500 and at least one leaded light post 600 pushed.
This light guide plate 100 is mainly in order to the guiding radiation direction, and guarantees the uniformity of plate body brightness.Wherein this light guide plate 100 is to utilize the not material of extinction, as: polymethyl methacrylate (Polymethylmethacrylate, PMMA), synthetic resin, propylene (acryl), Merlon (Polycarbonate, PC), polyester (Polyethylene terephthalate, PET), polyolefin (Polyolefines) or glass, the smooth plate that is made in the mode of ejection formation.And a wherein surface of this light guide plate 100 is provided with high reflection of a plurality of uses and the light element (not icon) made of light absorbent not, and the size of these light elements, arrangement mode are neither identical.When light was mapped to light element, reverberation can be derived by another surface of this light guide plate 100 with the angle of running counter to reflection law, makes light be distributed in the optical plane that of this light guide plate 100 uniformly.
This luminescence component 200 is at least one sides that are arranged at this light guide plate 100, and emits beam towards this light guide plate 100, and wherein this luminescence component 200 is a light-emitting diode.When this luminescence component 200 when this light guide plate 100 emits beam, these light guide plate 100 inside of its light penetration, wherein a part of light is that projection is put this light element 102 and formed reflection, light is covered with among this light guide plate 100, with the utilization rate and the brightness uniformity of increase light.
This reflector plate 300 is to be arranged at this light guide plate 100 belows, mainly spills in the light of this light guide plate 100 in order to the reflecting part, makes light enter this light guide plate 100 inside once more, improves the service efficiency of light.
This shadow shield 400 is to be arranged on this light guide plate 100, and includes at least one perforation 402, and this perforation 402 is to pass through for light, makes by this luminescence unit 200 to send and light by these light guide plate 100 conduction passes via this open-work 402, forms a transmission region.
This is pushed unit 500 and includes a key bridge 510, a keycap 520 and an elastic component 530, and this key bridge 510 is to be arranged on this shadow shield 400, and is positioned at this transmission region, has and pushes the function that resets, as scissor structure.This scissor structure is to be made of one of two staggered and mutual pivot joints first support 512 and one second support 514, this first support 512 is articulated in one of keycap 520 bottom surface 522 with the top system of this second support 514, and this first support 512 is articulated in this shadow shield 400 with the bottom of this second support 514.
This bottom surface 522 of this keycap 520 is to be connected in this key bridge 510 tops, and end face 524 cordings of this keycap 520 have at least one transmittance section (not shown), make light by these luminescence component 200 ejaculations transfer to this and push unit 500, constitute the luminous key device of a keycap 520 via these 402 correspondences of boring a hole.Wherein this keycap 520 is to use light-transmitting materials to make, and in end face 524 definition of this keycap 520 this transmittance section is arranged, and is coated with a light non-transmittable layers at the non-transmission region with respect to the transmittance section.
This elastic component 530 is to be arranged between this shadow shield 400 and this keycap 520, and with to this keycap 520 of upper support, wherein this elastic component 530 is to utilize rubber or other elastomeric material to make.
This leaded light post 600 has an exiting surface that is connected in the bottom surface 522 of this keycap 520, and one in contrast to this exiting surface and face the incidence surface of this perforation 402, and have a preset distance D1 between the incidence surface of this leaded light post 600 and this shadow shield 400, promptly this leaded light post 600 does not directly contact with this light guide plate 100.This leaded light post 600 is the cylinders that adopt optical material with printing opacity or leaded light character to make, the structure of its cylinder itself is one of to can be shown in the present embodiment solid cylinder, or hollow cylinder one of as shown in Figure 2, and the section of this leaded light post 600 can be circle, polygon or other geometric figure.Should appear via this perforation 402 by the light system that luminescence component 200 is sent, this light system is by the central axis direction transmission along this leaded light post 600 of the incidence surface of this leaded light post 600 afterwards, and, outwards penetrate via the transmittance section of this keycap 520 again via this keycap 520 of the exiting surface transmission of this leaded light post 600.
Cooperate and to consult Figure 1B, the operation chart of the key device that changes for the tool luminosity of first embodiment of the invention.When the user pushed this keycap 520, this leaded light post 600 was to be subjected to this keycap 520 to press down and move towards this perforation 402, made the light that enters this leaded light post 600 increase gradually, made this push unit 500 surface brightness and promoted; When the user decontrols this keycap 520, this leaded light post 600 be together with this keycap 520 away from this perforation 402, make this push unit 500 surface brightness and descend; And along with the user pushes the depth difference that this pushes unit 500, the light system that is appeared by this keycap 520 produces bright dark different distribution.
Cooperate and to consult Fig. 3 A, the cutaway view of the key device that changes for the tool luminosity of third embodiment of the invention.Present embodiment and above-mentioned embodiment are roughly the same, its difference is on this light guide plate 100 to be to be formed with bore a hole on this shadow shield 400 402 open-work 102 of at least one correspondence, and the two sides at least that are provided with this light guide plate 100 of this open-work 102 are to be respectively arranged with at least one luminescence unit 200; In addition, this leaded light post 600 has an exiting surface that is connected in the bottom surface 522 of this keycap 520, and the bottom surface in contrast to this exiting surface, be to be provided with a light tight assembly 610 on this bottom surface, this light tight assembly 610 is in order to avoid the bottom surface light inlet of light by this leaded light post 600.
Being emitted beam by this luminescence unit 200, is to see through this open-work 102 and this perforation 402 that this light guide plate 100 is passed to corresponding settings, and few partly light system is via this open-work 102 of correspondence setting and bore a hole and 402 appear.Because the bottom surface of this leaded light post 600 is provided with this light tight assembly 610, therefore can't directly enter this leaded light post 600 by 402 small part light that appear of this open-work 102 and perforation, this pushes 500 surfaces, unit does not also have light.
Cooperate and to consult Fig. 3 B, the operation chart of the key device that changes for the tool luminosity of the present invention's the 3rd embodiment.When the user pushes this keycap 520, this leaded light post 600 is pressed down by this keycap 520 and move towards this perforation 402 and this open-work 102, and enter in this perforation 402 and this open-work 102, make light enter side incident by this leaded light post 600, and be passed to this and push 500 surfaces, unit, light this and push 500 surfaces, unit.When the user decontrols this keycap 520, this leaded light post 600 be together with this keycap 520 away from this perforation 402, make this push unit 500 and be returned to non-luminous state.
Cooperate and to consult Fig. 4 A, the cutaway view and the operation chart of the key device that changes for the tool luminosity of the present invention's the 4th embodiment.The key device of this tool luminosity variation includes a light guide plate 100, a luminescence unit 200, a reflector plate 300, Shu anti-dazzling screen 400, at least and pushes unit 500, a leaded light post 600, a Flexible element 700 and one first fastener 800.
This pushes unit 500 is to include a keycap 520, and the bottom of this keycap 520 system comprises at least one transmittance section (not shown); In addition, the surface is to be extended with one second fastener 540 under this keycap 520.This leaded light post 600 has an exiting surface that is connected in this keycap 520, and a bottom surface in contrast to this exiting surface, and has a preset distance between the incidence surface of this leaded light post 600 and this shadow shield 400.
This Flexible element 700 is to be surrounded on this leaded light post 600, pushes unit 500 1 elastic restoring forces in order to this to be provided.This first fastener 800 is to be arranged on this shadow shield 400, and is positioned at on the Shu operation planar with this second holding section 540; This first fastener 800 is mainly in order to fix mutually with this second holding section 540, makes this leaded light post 600 be positioned at Shu fixed position on this light guide plate 500, makes to enter this light of pushing unit 520 and maintain a fixed value.
Cooperate and to consult the 4th figure B, the operation chart of the key device that changes for the tool luminosity of third embodiment of the invention.When the user pushed this keycap 520, this leaded light post 600 was to be subjected to this keycap 520 to press down and move towards this perforation 402, and this moving part 540 is to fasten with this first holding section 800; Because this first holding section 800 is ramp structure with this second fastener 540, makes the driving fit contact each other of this two inclined-plane, and make this push unit 500 to be fastened on the fixed position, to provide this keycap 520 1 lightness stabilized.When the user pushes this keycap 520 once more, will force this second holding section 540 away from this first holding section 800, so this is pushed unit 500 and promptly is returned to non-luminous state originally.
In addition, the bottom surface of this leaded light post 600 also can additionally be provided with a light tight assembly 610, when avoiding this to push unit 500 and be not pressed, promptly has part light to be passed to this keycap 520 via this leaded light post 600, causes user's misinterpretation.
In addition, the key device that the present invention's tool luminosity changes can see through collocation one electronic installation, and detect the light quantity of going into of this leaded light post 600 by this electronic installation, and go into light quantity according to difference and define different function settings, so, the key device of controlling single tool luminosity variation can correspond to a plurality of different signals, forms the key device of the tool luminosity variation of signal more than; The user then sees through the power of these keycap 520 glazings of identification, and carries out the control of difference in functionality.
Comprehensive the above, the present invention sees through a leaded light post 600 that is arranged at these keycap 520 belows, will be passed to this by these 402 light that appear of boring a hole and push unit 500; When this is pushed unit 500 and is pressed, moving this leaded light post 600 of frenulum moves up and down, add that 600 on this leaded light post is as good light transmitting medium, therefore this leaded light post 600 can be with few variation the more than the incident ray, be close to and fully conduct to this and push unit 500, and, form the key device that a tool luminosity changes in the bright dark difference of these keycap 520 generations.
Right the above, only be the present invention's preferred embodiment, when the scope that can not limit the invention process, promptly all equalization of doing according to the claim of the present patent application change with modification etc., in the category that the covering scope that all should still belong to the present invention's right is intended to protect.
Claims (14)
1. the key device that the tool luminosity changes is characterized in that comprising: a light guide plate; At least one at least one side of this light guide plate and luminescence component that emits beam towards this light guide plate of being arranged at; One shadow shield; Described shadow shield is to be arranged on this light guide plate, and described shadow shield includes at least one perforation that supplies light to pass through; At least one unit of pushing; The described unit of pushing is to be arranged at this shadow shield top, and this is pushed unit pack and contains at least one keycap that moves up and down with respect to this shadow shield, and includes at least one transmittance section on this keycap; And at least one leaded light post; Described light beam has one and is connected in the exiting surface that this pushes a lower surface of unit, and one in contrast to this exiting surface and face the bottom surface of this perforation, and has a preset distance between the incidence surface of this leaded light post and this shadow shield.
2. the key device that tool luminosity according to claim 1 changes is characterized in that: more comprise a reflector plate; Described reflector plate is to be arranged at this light guide plate below.
3. the key device that tool luminosity according to claim 1 changes is characterized in that: include bore a hole on this shadow shield open-work of setting of at least one correspondence on this light guide plate.
4. the key device that tool luminosity according to claim 1 changes, it is characterized in that: a wherein surface of this light guide plate is provided with a plurality of light elements.
5. the key device that tool luminosity according to claim 1 changes is characterized in that: be equiped with an elastic component between this keycap and this shadow shield, and one has the reset function of pushing key bridge.
6. the key device that tool luminosity according to claim 5 changes, it is characterized in that: this key bridge is a scissors leg structure, wherein this scissor structure is to be configured to by one of two staggered and mutual pivot joints first support and one second.
7. the key device that tool luminosity according to claim 1 changes, it is characterized in that: this light shielding part is provided with one first fastener.
8. the key device that tool luminosity according to claim 1 changes, it is characterized in that: a lower surface of this keycap more includes one second holding section.
9. the key device that tool luminosity according to claim 1 changes, it is characterized in that: this keycap is to use light-transmitting materials to make, and in the end face definition of this keycap this transmittance section is arranged, and is coated with a light non-transmittable layers in non-transmission region.
10. the key device that tool luminosity according to claim 1 changes, it is characterized in that: this luminescence component is a light-emitting diode.
11. the key device that tool luminosity according to claim 1 changes, it is characterized in that: the bottom surface of this leaded light post is to be provided with a light tight assembly.
12. the key device that tool luminosity according to claim 1 changes is characterized in that: the section of this leaded light post is circle, polygon or other geometric figure.
13. the key device that tool luminosity according to claim 1 changes, it is characterized in that: this leaded light post is a solid cylinder.
14. the key device that tool luminosity according to claim 1 changes, it is characterized in that: this leaded light post is a hollow cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101232756A CN101789320B (en) | 2010-03-12 | 2010-03-12 | Key device with variable luminous intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101232756A CN101789320B (en) | 2010-03-12 | 2010-03-12 | Key device with variable luminous intensity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101789320A true CN101789320A (en) | 2010-07-28 |
| CN101789320B CN101789320B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101232756A Active CN101789320B (en) | 2010-03-12 | 2010-03-12 | Key device with variable luminous intensity |
Country Status (1)
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|---|---|
| CN (1) | CN101789320B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053710A (en) * | 2010-12-23 | 2011-05-11 | 苏州茂立光电科技有限公司 | Keyboard device |
| CN102176394A (en) * | 2011-03-12 | 2011-09-07 | 江海波 | Computer key adopting novel scissor structure |
| CN104779113A (en) * | 2014-01-13 | 2015-07-15 | 苏州璨宇光学有限公司 | Key device |
| WO2016095724A1 (en) * | 2014-12-19 | 2016-06-23 | 东莞市凯华电子有限公司 | Luminous keyboard switch |
| WO2016112843A1 (en) * | 2015-01-15 | 2016-07-21 | 东莞市凯华电子有限公司 | Light-emitting keyboard switch |
| CN106298342A (en) * | 2015-05-12 | 2017-01-04 | 纬创资通股份有限公司 | Multi-directional key |
| CN107154319A (en) * | 2016-03-02 | 2017-09-12 | 原相科技股份有限公司 | Key and keyboard with distance sensing function |
| CN110098072A (en) * | 2018-01-29 | 2019-08-06 | 光宝电子(广州)有限公司 | Press-key structure and its assemble method |
| CN112382521A (en) * | 2020-11-23 | 2021-02-19 | 秦皇岛泰和安科技有限公司 | Interconnected lamp key structure |
| TWI795859B (en) * | 2021-08-03 | 2023-03-11 | 達方電子股份有限公司 | Lighting keyswitch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102053710A (en) * | 2010-12-23 | 2011-05-11 | 苏州茂立光电科技有限公司 | Keyboard device |
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| CN107154319B (en) * | 2016-03-02 | 2019-03-12 | 原相科技股份有限公司 | Key and keyboard with distance sensing function |
| CN110098072A (en) * | 2018-01-29 | 2019-08-06 | 光宝电子(广州)有限公司 | Press-key structure and its assemble method |
| CN112382521A (en) * | 2020-11-23 | 2021-02-19 | 秦皇岛泰和安科技有限公司 | Interconnected lamp key structure |
| TWI795859B (en) * | 2021-08-03 | 2023-03-11 | 達方電子股份有限公司 | Lighting keyswitch |
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|---|---|
| CN101789320B (en) | 2012-11-21 |
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