CN1301454C - Lightening keyboard - Google Patents
Lightening keyboard Download PDFInfo
- Publication number
- CN1301454C CN1301454C CNB2005100041089A CN200510004108A CN1301454C CN 1301454 C CN1301454 C CN 1301454C CN B2005100041089 A CNB2005100041089 A CN B2005100041089A CN 200510004108 A CN200510004108 A CN 200510004108A CN 1301454 C CN1301454 C CN 1301454C
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- CN
- China
- Prior art keywords
- illuminated keyboard
- guide plate
- light guide
- opening
- light
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Input From Keyboards Or The Like (AREA)
- Push-Button Switches (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention provides a lightening keyboard which comprises a keyboard part, a light guiding plate and a light source, wherein the keyboard part is provided with a key; the light guiding plate is arranged below the keyboard part and provided with an opening, and the opening is arranged at the region outside the right lower part of the key; the light source is adjacent to the light guiding plate.
Description
Technical field
The present invention relates to a kind of illuminated keyboard.
Background technology
Keyboard is a kind of common input media, is used in the various electronic product, for example personal computer, mobile phone, telepilot or the like.These electronic products might use under various environment, for example in the occasion of insufficient light.For in response to the demand, have then and can be suggested by luminous voluntarily illuminated keyboard.
In existing illuminated keyboard, add light guide plate by one group of light source, the button of light to illuminated keyboard is provided.Generally speaking, light guide plate is transparent plate object, via the design of reflection spot, can be used for illuminating the button of illuminated keyboard so that light is dispersed in the light guide plate equably.
Because electronic product now has compact day by day trend, therefore, how to use the various energy more efficiently, just becomes important problem.Hold this, existing light guide plate still needs to be improved in design, improves with the usefulness that light source is used, and reaches the purpose of electronic product low power consumption.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of illuminated keyboard, to address the above problem.
The object of the present invention is achieved like this, and a kind of illuminated keyboard promptly is provided, and it comprises: a keypad portion has a button; One light guide plate is arranged on this keypad portion below, and this light guide plate has an opening, the zone beyond this opening is arranged under this button; And a light source, be adjacent to by this light guide plate.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, especially exemplified by preferred embodiment, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 is the exploded view of the illuminated keyboard of the first embodiment of the present invention;
Fig. 2 is the top view of the light guide plate of the first embodiment of the present invention;
Fig. 3 is the exploded view of the illuminated keyboard of the second embodiment of the present invention;
Fig. 4 is the top view of the light guide plate of the second embodiment of the present invention.
Embodiment
Main spirit of the present invention be with in the light guide plate of illuminated keyboard not the zone corresponding to button hollow out, and reflectorized material is set at the inside surface of cut-out, dwindle the zone that light is passed through thus, and then improve the usefulness that light source uses.
First embodiment
Fig. 1 is the exploded view of the illuminated keyboard 10 of the first embodiment of the present invention.As shown in the figure, illuminated keyboard 10 comprises keypad portion 20 and back lighting device 30.Keypad portion 20 has button 21 and base plate 22.Button 21 is arranged on the base plate 22, and can move up and down with respect to base plate 22.Back lighting device 30 is arranged under the keypad portion 20, has light guide plate 31a, reflecting plate 32, light source 33 and covering 34.Light source 33 is that (Light Emitting Diode LED), is arranged at the side of light guide plate 31a to light emitting diode.Covering 34 coats a side of light source 33, and the light 36 that makes light source 33 be sent can be imported among the light guide plate 31a fully, and is left by the top of light guide plate 31a.Thus, light source 33 can be provided keypad portion 20 required light 36 by the below of keypad portion 20.
Illustrate further, the bottom of light guide plate 31a has photo-emission part 35, and photo-emission part 35 in mode one to one corresponding to button 21.Photo-emission part 35 has a plurality of reflection spots, and this each reflection spot is the bottom that is arranged at light guide plate 31a in the mode of printing.Thus, be emitted to light 36 in the light guide plate 31a, when running into this each reflection spot of photo-emission part 35, can be reflected onto button 21, thereby form and concentrate luminous effect by light source 33.
In addition, photo-emission part 35 has less reflection spot near light source 33 places, has more a plurality of reflection spots away from light source 33 places, so that the brightness that each button 21 of illuminated keyboard 10 is received reaches unanimity.Again, reflecting plate 32 is arranged at the below of light guide plate 31a, and the light 36 that will leave via the bottom of light guide plate 31a is again in the reflected back light guide plate 31a, to improve the effective utilization of light 36.
Moreover light guide plate 31a has several openings 37.Zone beyond opening 37 is arranged under the button 21, and not overlapping with the zone at photo-emission part 35 places yet.Opening 37 penetrates the upper and lower surface of light guide plate 31a.Again, the inside surface of opening 37 makes light 36 can't enter opening 37 via attaching processing and having reflector layer 38.Reflector layer 38 can be white PET (Polyethylene Terephthalate) reflectance coating, or by the made film of barium sulphide (BaS), is fixed on the inside surface of opening 37 via the plating mode or the mode of pasting.
Fig. 2 is the top view of the light guide plate 31a of the first embodiment of the present invention.Gone up by figure and can know and find out, opening 37 is arranged under the button 21 zone in addition, and with the zone at photo-emission part 35 places also zero lap.
Second embodiment
Fig. 3 is the exploded view of the illuminated keyboard 10 of the second embodiment of the present invention.Fig. 4 is the top view of the light guide plate 31b of the second embodiment of the present invention.The present embodiment and the first embodiment difference are that light guide plate 31b has more several perforations 39.Perforation 39 can be used for ccontaining light source 33, can omit the covering 34 among first embodiment simultaneously.Other assembly please refer to the explanation of first embodiment, does not repeat them here.
In illuminated keyboard of the present invention, with in the light guide plate not the zone corresponding to button hollow out, and reflectorized material is set at the inside surface of cut-out.So, the light of light guide plate that light source is emitted to only navigates in the button The corresponding area, i.e. the in fact required shinny zone of illuminated keyboard.In view of the above, can dwindle the zone that light is passed through, reduce light, and then improve the usefulness that light source uses because of energy losses that factor caused such as multipath reflections.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limiting scope of the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; can do some and change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (11)
1. illuminated keyboard comprises:
One keypad portion has a button;
One light guide plate is arranged at this keypad portion below, and this light guide plate has an opening, the zone beyond this opening is arranged under this button; And
One light source is adjacent to by this light guide plate.
2. illuminated keyboard as claimed in claim 1 also comprises a reflector layer, and this reflector layer is arranged at the inside surface of this opening.
3. illuminated keyboard as claimed in claim 2, wherein this reflector layer is arranged at the inside surface of this opening with plating mode.
4. illuminated keyboard as claimed in claim 2, wherein this reflector layer is to paste the inside surface that mode is arranged at this opening.
5. illuminated keyboard as claimed in claim 2, wherein this reflector layer is a white PET reflectance coating.
6. illuminated keyboard as claimed in claim 2, wherein this reflector layer is made by barium sulphide.
7. illuminated keyboard as claimed in claim 1, wherein the bottom surface of this light guide plate has a plurality of reflection spots corresponding to this button, and this opening and this each reflection spot are independently of one another.
8. illuminated keyboard as claimed in claim 1, wherein this keypad portion also has a base plate, and this button is being arranged on respect to the mode that this base plate moves up and down on this base plate.
9. illuminated keyboard as claimed in claim 1 also comprises a reflecting plate, is arranged on this light guide plate below.
10. illuminated keyboard as claimed in claim 1, wherein this light source is a light emitting diode.
11. illuminated keyboard as claimed in claim 1, wherein this light guide plate also has a perforation, in order to ccontaining this light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100041089A CN1301454C (en) | 2005-01-06 | 2005-01-06 | Lightening keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100041089A CN1301454C (en) | 2005-01-06 | 2005-01-06 | Lightening keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1635461A CN1635461A (en) | 2005-07-06 |
| CN1301454C true CN1301454C (en) | 2007-02-21 |
Family
ID=34853010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100041089A Active CN1301454C (en) | 2005-01-06 | 2005-01-06 | Lightening keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1301454C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994990A (en) * | 2009-08-25 | 2011-03-30 | 锐光照明系统（上海）有限公司 | Manufacturing method of reflector for lighting |
| TWI726785B (en) | 2020-08-04 | 2021-05-01 | 群光電子股份有限公司 | Backlight module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432892A (en) * | 2002-01-17 | 2003-07-30 | 达方电子股份有限公司 | Light-emitting keyboard |
| US20040008505A1 (en) * | 2002-04-12 | 2004-01-15 | Darfon Electronics Corp. | Keyboard with illumination module and fabrication method thereof |
| CN1532674A (en) * | 2003-03-20 | 2004-09-29 | 达方电子股份有限公司 | Keyboard structure |
-
2005
- 2005-01-06 CN CNB2005100041089A patent/CN1301454C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432892A (en) * | 2002-01-17 | 2003-07-30 | 达方电子股份有限公司 | Light-emitting keyboard |
| US20040008505A1 (en) * | 2002-04-12 | 2004-01-15 | Darfon Electronics Corp. | Keyboard with illumination module and fabrication method thereof |
| CN1532674A (en) * | 2003-03-20 | 2004-09-29 | 达方电子股份有限公司 | Keyboard structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1635461A (en) | 2005-07-06 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |