CN203149534U - Infrared touch screen - Google Patents
Infrared touch screen Download PDFInfo
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- CN203149534U CN203149534U CN 201320067168 CN201320067168U CN203149534U CN 203149534 U CN203149534 U CN 203149534U CN 201320067168 CN201320067168 CN 201320067168 CN 201320067168 U CN201320067168 U CN 201320067168U CN 203149534 U CN203149534 U CN 203149534U
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- infrared
- touch panel
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Abstract
The utility model discloses an infrared touch screen, which belongs to the technical field of infrared touch, and is designed aiming to reduce light interference. The infrared touch screen comprises a frame (101), a printed circuit board (201), a plurality of infrared transmitting tubes (1) and a plurality of infrared receiving tubes (2), wherein the printed circuit board (201) is arranged in the frame (101), and the infrared transmitting tubes (1) and the infrared receiving tubes (2) are arranged on the printed circuit board (201). The infrared touch screen is characterized in that a light shield (301) which is used to reduce environment light which shoots to the infrared receiving tubes (2) is arranged in the frame (101), and the infrared touch screen can effectively reduce interference of the environment light by arranging the light shield on the surrounding of the infrared receiving tubes.
Description
Technical field
The utility model relates to the touch-screen field, relates in particular to a kind of infrared touch panel of high light resistance.
Background technology
Compare with traditional monitor, touch-screen display shows extremely strong advantage.Touch-screen products such as touch-screen display, touch-screen dish ordering machine, touch-screen POS machine, touch-screen all-in-one have all been broken away from the performance constraint of mouse, keyboard, have realized the new model of man-machine interaction.Usually, touch panel device comprises that touching surveyed area touches surveyed area framework all around with being arranged on, and inside of frame is provided with circuit board.
For a long time, infrared touch panel wins insider's favorable comment with stability, adaptability and the light transmission of height.As illustrated in fig. 1 and 2, the infrared touch panel of prior art comprises framework 101, touch panel 102, printed circuit board (PCB) 201 be installed in printed circuit board (PCB) 201 on infrared transmitting tube 1 and infrared receiving tube (in the prior art structure of the transmitting terminal of infrared touch panel and receiving end on printed circuit board (PCB) circuit and infrared components different, other structures are basic identical, therefore Fig. 2 only shows the cross sectional representation of transmitting terminal), infrared transmitting tube 1 and infrared receiving tube are relative installation the in touch panel 102 both sides, a face towards touch panel 102 of framework 101 is transparent surface 202, infrared ray between infrared transmitting tube 1 and the infrared receiving tube forms the infrared network that intersects in length and breadth on touch panel 102 surfaces, when having touch objects on the touch panel 102, infrared ray between part infrared transmitting tube 1 and the infrared receiving tube is blocked, by detecting the position that infrared transmitting tube 1 that light is blocked and the position of infrared receiving tube can detect touch objects.Because infrared touch panel is a kind of optical touch screen, in order to simplify technology and to make the light of infrared transmitting tube 1 emission appear framework, and received by infrared receiving tube, generally speaking, whole framework all adopts light transmissive material to make, so, the bias light of framework outside also enters easily in the framework and is received by infrared receiving tube, cause certain light to disturb, so for infrared touch panel, need to adopt certain means to reduce the interference of bias light, the light of the bias light that infrared touch panel is suffered disturbs the light that mostly is from sunshine or illuminator lamp light to disturb.Infrared touch panel manufacturer has carried out the improvement of the light resistance energy of product to infrared touch panel in recent years, as, lighttight shield element is set above the infrared receiving tube in framework, can stop a part of surround lighting from the direction directive infrared receiving tube perpendicular to touch panel, but can not stop the surround lighting that comes from infrared receiving tube the place ahead or oblique upper, the surround lighting of the angle that the oblique upper of infrared receiving tube is bigger can both be mapped in the printing opacity frame of receiving end and be received by infrared receiving tube, therefore still can not satisfy some products to the requirement of high light resistance.
The utility model content
At the above-mentioned problems in the prior art, the technical matters that the utility model solves provides a kind of infrared touch panel that can improve light resistance.
The utility model provides a kind of infrared touch panel, comprise framework, be arranged on the printed circuit board (PCB) in the described framework and be arranged on a plurality of infrared transmitting tubes and a plurality of infrared receiving tube on the described printed circuit board (PCB), be provided with the light shield for the surround lighting that reduces the described infrared receiving tube of directive in the described framework.
Aforesaid infrared touch panel, described infrared receiving tube are arranged on the edge away from touch panel of described printed circuit board (PCB).
Aforesaid infrared touch panel, described light shield comprise shading substrate and a plurality of light shielding parts that are arranged on the described shading substrate, have a described infrared receiving tube between the plane of symmetry perpendicular to described shading substrate of per two adjacent described light shielding parts.
Aforesaid infrared touch panel, described light shield also comprises the obstruct section that is connected with described light shielding part, the xsect of described light shielding part is " U " type, and the xsect of described obstruct section is " 1 " type, has a described infrared receiving tube between per two adjacent described blocking portions.
Aforesaid infrared touch panel, described light shield also comprises the obstruct section that is connected with described light shielding part, and described light shielding part is " one " font, and described obstruct section is " 1 " font, has a described infrared receiving tube between per two adjacent described blocking portions.
Aforesaid infrared touch panel, described framework comprises first shell and second shell, described first shell comprises the groove structure that is formed by first panel, second panel and the 3rd panel, wherein said first panel and described the 3rd panel are positioned at the homonymy of described second panel, described the 3rd panel is positioned at the inboard of described framework, described light shield is arranged in the described groove structure, and described first shell is made by light transmissive material; Described second shell comprises that the xsect that is formed by fourth face plate and the 5th panel is the structure of " L " type, and described fourth face plate and described first panel are superimposed.
Aforesaid infrared touch panel, a side of the close touch panel of described the 3rd panel is provided for locating and supporting the location division of described touch panel.
Aforesaid infrared touch panel, described first shell and described second shell are fixed by snap.
Aforesaid infrared touch panel, described buckle is made up of with the groove corresponding with described projection or through hole on being arranged on described fourth face plate the projection that is arranged on described first panel, perhaps is made up of with the projection corresponding with described groove that is arranged on described fourth face plate inboard groove or the through hole in the outside that is arranged on described first panel.
The utility model provides a kind of infrared touch panel, by in the framework of receiving tube, light shield being set, on the one hand, not only can block the surround lighting of penetrating from the top of framework, also can shield portions from oblique upper be parallel to the surround lighting of the direction of touch panel, therefore can significantly reduce surround lighting receives signal to infrared receiving tube interference; On the other hand, light shield is buckled on the printed circuit board (PCB), can be used for supporting printing board, to prevent the buckling deformation that causes printed circuit board (PCB) that exists owing to infrared components.
Description of drawings
Fig. 1 is the overall appearance structural representation of infrared touch panel;
Fig. 2 is that the infrared touch panel of prior art is along the schematic cross-section of AA ' line among Fig. 1;
Fig. 3 is the sectional view of receiving end of the infrared touch panel of the utility model embodiment;
The receiving end of the infrared touch panel that Fig. 4 provides for the utility model is at the sectional view at buckle place;
Fig. 5 A and Fig. 5 B are respectively not to be had light shield and has under two kinds of situations of light shield comparison diagram at the shaded effect of oblique upper;
Fig. 6 is the structural representation of light shield in the utility model embodiment;
Fig. 7 is the relative position relation synoptic diagram of light shield and infrared receiving tube in the utility model embodiment;
Fig. 8 is that light shield is at the shaded effect synoptic diagram that is parallel on the touch panel direction.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the technical solution of the utility model is clearly and completely described.
Because being subjected to light easily, disturbs the receiving end of infrared touch panel, it in fact also is that the light that reduces receiving tube disturbs that the light that reduces infrared touch panel disturbs, therefore a structure to receiving end is described in detail among the utility model embodiment, and the structure of transmitting terminal can adopt any structure in the prior art.
Fig. 3 is the receiving end sectional view of the infrared touch panel in the utility model embodiment, the utility model embodiment provides a kind of infrared touch panel, comprise framework 101, be arranged on the printed circuit board (PCB) 201 in the framework 101, and be arranged on a plurality of infrared transmitting tubes 1 and a plurality of infrared receiving tube 2 on the printed circuit board (PCB) 201, preferably, infrared transmitting tube 1 is arranged in two adjacent frames of framework 101, infrared receiving tube 2 is arranged in two other adjacent frame of framework 101, in order to improve the light resistance of infrared touch panel, in framework 101, be provided for reducing the light shield 301 of the surround lighting of directive infrared receiving tube, because surround lighting is bigger to the effect of signals of infrared receiving tube, therefore can make 301 two frame settings that are provided with infrared receiving tube along inside of frame of light shield, also namely only at receiving end light shield 301 is set, transmitting terminal can arrange light shield also can not arrange light shield.
Preferably, infrared receiving tube is arranged on an edge away from touch panel of printed circuit board (PCB), that is to say infrared receiving tube is moved on the Width of printed circuit board (PCB) backward, make infrared receiving tube be positioned at the position far away apart from transparent surface, can reduce injecting of surround lighting.Shown in Fig. 5 A and 5B, R1 among Fig. 5 A is that infrared receiving tube 2 is installed in the normal position, when just being installed in edge of close touch panel of printed circuit board (PCB), the maximum angle that surround lighting is injected from the oblique upper of infrared receiving tube 2, R2 among Fig. 5 B is after moving behind the infrared receiving tube 2, surround lighting is injected the maximum angle of directive infrared receiving tube 2 from the oblique upper of infrared receiving tube 2, because R2 is much smaller than R1, this shows, can reduce the angle that surround lighting is injected greatly by moving behind the infrared receiving tube 2, therefore have light resistance preferably.
Shown in Figure 6, a kind of preferred structure synoptic diagram for light shield, light shield 301 comprises a shading substrate 601, a plurality of light shielding part 602 and a plurality of obstruct sections 603 that are connected with a plurality of light shielding parts 602 respectively, light shielding part 602 and obstruct section 603 all are positioned on the shading substrate 601, as preferably, the xsect of light shielding part 602 is " U " type, and the xsect of obstruct section 603 is " 1 " type, and light shielding part 602 and obstruct section 603 are joined together to form the structure of " tuning fork " type.As shown in Figure 7, a plurality of infrared receiving tubes 2 lay respectively in the partition space of a plurality of obstruct sections 603 formation, that is to say that obstruct section 603 is arranged on the shading substrate, formation is one by one for the partition space that holds infrared receiving tube, and infrared receiving tube lays respectively at these and cuts off in spaces.Light shield can be fixed in the framework by web members such as screws, also can fix by the mode of pasting.During assembling, light shield tips upside down on the printed circuit board (PCB) that has infrared receiving tube, infrared receiving tube is positioned at cuts off the space, and the one side light shield can block from the top, oblique upper, left and the right-hand surround lighting of penetrating also can play the effect of supporting printing board on the other hand.
It will be appreciated by those skilled in the art that, light shielding part and obstruct section also can be other shapes, be " one " font as light shielding part, obstruct section is " 1 " font, light shielding part and obstruct section form the T-shape structure, perhaps the xsect of light shielding part is " V " type, or the xsect of light shielding part is flat " U " type structure etc.Above-mentioned light shield also can not comprise obstruct section 603, light shielding part 602 also namely only is set on the shading substrate, per two adjacent light shielding parts 602 have an infrared receiving tube 2 between the plane of symmetry perpendicular to shading substrate 601, described " perpendicular to the plane of symmetry of shading substrate 601 " refers to that light shielding part is in a cross section transversely of shading substrate, this cross section is perpendicular to the shading substrate, and be the plane of symmetry of light shielding part, as among Fig. 7 along the plane perpendicular to the shading substrate of dotted line 701, also be the both sides that light shielding part is positioned at infrared receiving tube, can block the surround lighting that comes from the infrared receiving tube left and right sides.
Need to prove, position relation for the structure of clearly expressing light shield and infrared receiving tube and light shield, orientation when the orientation of the light shield shown in Fig. 6 and Fig. 7 is not actual use, but opposite orientation, during actual the use, the shading substrate of light shield in the above, infrared receiving tube, light shielding part and obstruct section all are positioned at the below of shading substrate.
Shown in Fig. 5 B, R3 be arrange surround lighting behind the light shield from oblique upper can the directive infrared receiving tube maximum angle, R2 moves behind the infrared receiving tube 2 but when light shield not being set, surround lighting is injected the maximum angle of directive infrared receiving tube 2 from the oblique upper of infrared receiving tube 2, relatively R2 and R3 are as can be known, R3 is less than R2, therefore the shading substrate of above-mentioned light shield can block the surround lighting perpendicular to touch panel on the one hand, also can further reduce from the angle of the surround lighting of oblique upper directive infrared receiving tube on the other hand; The light shielding part of above-mentioned light shield can reduce to come from the angle of the surround lighting that is parallel to the touch panel direction greatly, as shown in Figure 8, arrange in the absence of light shield, infrared receiving tube can receive the surround lighting that comes from the 180 degree scopes, after being provided with the light shield of light shielding part, can make the incident angle of the surround lighting that is parallel to the touch panel direction taper to the scope of R4.This shows that no matter the infrared touch panel that the utility model provides is perpendicular to the direction of touch panel or be parallel to the direction of touch panel, all has higher anti-light effect.
As a kind of preferred mode, the framework 101 of above-mentioned infrared touch panel comprises first shell 1011 and second shell 1012, wherein first shell 1011 is made by light transmissive material, first shell 1011 comprises by the first panel 101a, the groove structure that the second panel 101b and the 3rd panel 101c form, wherein the first panel 101a and the 3rd panel 101c are positioned at the same side of the second panel 101b, the 3rd panel 101c is positioned at the inboard of framework 101, correspondingly, the second panel 101b is positioned at the outside of framework 101, be the side that the 3rd panel 101c is positioned at the close touch panel 102 of framework 101 also, light shield 301 is arranged in the groove structure; Second shell 1012 comprises the structure of xsect " L " type that is formed by fourth face plate 101d and the 5th panel 101e, fourth face plate 101d and the first panel 101a are superimposed, because the gross thickness of printed circuit board (PCB) and infrared receiving tube is less than the thickness of groove structure, printed circuit board (PCB) can not fill up whole groove structure, in order to prevent that circuit board from rocking or buckling deformation, can in the space between printed circuit board (PCB) and frame (fourth face plate) pad 302 be set, make the space between pad jam-pack printed circuit board (PCB) and the frame.
For fixing touch panel 102 easily, be provided for locating and supporting the location division 303 of touch panel in a side of the close touch panel 102 of the 3rd panel 101c, during installation, the edge of touch panel 102 is installed on the turning of location division 303 and the 3rd panel 101c formation, touch panel is securely fixed on the framework.
Assembly and disassembly for convenience, first shell 1011 and 1012 fixed by snap connections of second shell, as shown in Figure 4, the infrared touch panel that provides for the utility model embodiment is at the sectional view at the buckle place of receiving end, by buckle 401 first shell 1011 and second shell 1012 are fixed, preferably, described buckle 401 can by be arranged on the first panel 101a groove 4011 be arranged on fourth face plate 101d and go up the projection 4012 corresponding with this groove 4011 and form (situation as shown in Figure 4), as a kind of optional mode, buckle also can be made up of with the groove corresponding with projection on being arranged on the fourth face plate the projection that is arranged on first panel.Above-mentioned institute's buckle can evenly distribute on framework, also can uneven distribution.As another optional mode, above-mentioned groove also can be arranged to the form of through hole, during use, first shell and second shell are aimed at, press first shell and second shell in opposite directions, first shell and second shell produce elastic deformation, and above-mentioned projection is snapped in groove or the through hole, are in the same place thereby first shell is firmly fixed with second shell.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model, as be provided for the brace table of supporting printing board in the frame inside of transmitting terminal, if of the present utility model these revise and modification belongs within the scope of the utility model claim and equivalent technology thereof, then the utility model also is intended to comprise these changes and modification.
Claims (9)
1. infrared touch panel, comprise framework (101), be arranged on the printed circuit board (PCB) (201) in the described framework (101) and be arranged on a plurality of infrared transmitting tubes (1) and a plurality of infrared receiving tube (2) on the described printed circuit board (PCB) (201), it is characterized in that: be provided with the light shield (301) for the surround lighting of the minimizing described infrared receiving tube of directive (2) in the described framework (101).
2. infrared touch panel according to claim 1, it is characterized in that: described infrared receiving tube (2) is arranged on the edge away from touch panel (102) of described printed circuit board (PCB) (201).
3. infrared touch panel according to claim 2, it is characterized in that: described light shield (301) comprises shading substrate (601) and is arranged on a plurality of light shielding parts (602) on the described shading substrate (601), has a described infrared receiving tube (2) between the plane of symmetry perpendicular to described shading substrate (601) of per two adjacent described light shielding parts (602).
4. infrared touch panel according to claim 3, it is characterized in that: described light shield also comprises the obstruct section (603) that is connected with described light shielding part (602), the xsect of described light shielding part (602) is " U " type, the xsect of described obstruct section (603) is " 1 " type, has a described infrared receiving tube (2) between per two adjacent described blocking portions (603).
5. infrared touch panel according to claim 3, it is characterized in that: described light shield also comprises the obstruct section (603) that is connected with described light shielding part (602), described light shielding part is " one " font, described obstruct section is " 1 " font, has a described infrared receiving tube (2) between per two adjacent described blocking portions (603).
6. according to each described infrared touch panel in the claim 1 to 5, it is characterized in that: described framework (101) comprises first shell (1011) and second shell (1012), described first shell (1011) comprises by first panel (101a), the groove structure that second panel (101b) and the 3rd panel (101c) form, wherein said first panel (101a) and described the 3rd panel (101c) are positioned at the homonymy of described second panel (101b), described the 3rd panel (101c) is positioned at the inboard of described framework (101), described light shield (301) is arranged in the described groove structure, and described first shell (1011) is made by light transmissive material; Described second shell (1012) comprises that the xsect that is formed by fourth face plate (101d) and the 5th panel (101e) is the structure of " L " type, and described fourth face plate (101d) is superimposed with described first panel (101a).
7. infrared touch panel according to claim 6 is characterized in that: a side of the close touch panel (102) of described the 3rd panel (101c) is provided for the location and supports the location division (303) of described touch panel (102).
8. infrared touch panel according to claim 6 is characterized in that: described first shell (1011) is fixing by buckle (401) with described second shell (1012).
9. infrared touch panel according to claim 7, it is characterized in that: described buckle (401) is made up of with groove (4011) or the through hole corresponding with described projection (4012) on being arranged on described fourth face plate (101d) the projection (4012) that is arranged on described first panel (101a), perhaps is made up of groove (4011) or the through hole projection corresponding with described groove (4012) inboard with being arranged on described fourth face plate (101d) in the outside that is arranged on described first panel (101a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320067168 CN203149534U (en) | 2013-02-05 | 2013-02-05 | Infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320067168 CN203149534U (en) | 2013-02-05 | 2013-02-05 | Infrared touch screen |
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| Publication Number | Publication Date |
|---|---|
| CN203149534U true CN203149534U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320067168 Expired - Lifetime CN203149534U (en) | 2013-02-05 | 2013-02-05 | Infrared touch screen |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104679346A (en) * | 2013-11-27 | 2015-06-03 | 昆山特思达电子科技有限公司 | Multi-touch screen based on frustrated total internal reflection technology and method thereof for identifying multi-touch |
| CN107300219A (en) * | 2017-08-16 | 2017-10-27 | 安徽江航爱唯科环境科技有限公司 | A kind of anti-interference infrared remote control air purifier and its anti-interference method |
| CN107506096A (en) * | 2017-09-06 | 2017-12-22 | 合肥宗平计算机科技有限公司 | Infrared touch panel framework and its touch-screen |
| WO2019041443A1 (en) * | 2017-08-30 | 2019-03-07 | 广东美的制冷设备有限公司 | Detection device and air conditioner |
| CN110443958A (en) * | 2018-09-06 | 2019-11-12 | 深圳来电科技有限公司 | A kind of mobile power source charging module, mobile power source and its leased equipment |
| CN112631453A (en) * | 2020-09-16 | 2021-04-09 | 安徽鸿程光电有限公司 | Touch device |
-
2013
- 2013-02-05 CN CN 201320067168 patent/CN203149534U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104679346A (en) * | 2013-11-27 | 2015-06-03 | 昆山特思达电子科技有限公司 | Multi-touch screen based on frustrated total internal reflection technology and method thereof for identifying multi-touch |
| CN104679346B (en) * | 2013-11-27 | 2018-03-23 | 江苏特思达电子科技股份有限公司 | A kind of method of multi-point touch panel and its identification multiple point touching based on frustrated total internal reflection technology |
| CN107300219A (en) * | 2017-08-16 | 2017-10-27 | 安徽江航爱唯科环境科技有限公司 | A kind of anti-interference infrared remote control air purifier and its anti-interference method |
| CN107300219B (en) * | 2017-08-16 | 2024-03-12 | 安徽江航爱唯科环境科技有限公司 | Anti-interference infrared remote control air purifier and anti-interference method thereof |
| WO2019041443A1 (en) * | 2017-08-30 | 2019-03-07 | 广东美的制冷设备有限公司 | Detection device and air conditioner |
| CN107506096A (en) * | 2017-09-06 | 2017-12-22 | 合肥宗平计算机科技有限公司 | Infrared touch panel framework and its touch-screen |
| CN110443958A (en) * | 2018-09-06 | 2019-11-12 | 深圳来电科技有限公司 | A kind of mobile power source charging module, mobile power source and its leased equipment |
| CN112631453A (en) * | 2020-09-16 | 2021-04-09 | 安徽鸿程光电有限公司 | Touch device |
| CN112631453B (en) * | 2020-09-16 | 2024-01-26 | 安徽鸿程光电有限公司 | Touch control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GUANGZHOU HUAXIN ELECTRONICS Co.,Ltd. Assignor: BEIJING IRTOUCH SYSTEMS Co.,Ltd. Contract record no.: 2014990000925 Denomination of utility model: Identification method of multi-touch of infrared touch screen Granted publication date: 20130821 License type: Common License Record date: 20141212 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: GUANGZHOU HUAXIN ELECTRONICS Co.,Ltd. Assignor: BEIJING IRTOUCH SYSTEMS Co.,Ltd. Contract record no.: 2014990000925 Date of cancellation: 20160831 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100015 4 floor, block B, M8 tower, 1 Jiuxianqiao East Road, Chaoyang District, Beijing. Patentee after: Three wisdom education Polytron Technologies Inc. Address before: 100015 4 floor, block B, M8 tower, 1 Jiuxianqiao East Road, Chaoyang District, Beijing. Patentee before: BEIJING IRTOUCH SYSTEMS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220727 Address after: Room 101-602, 6th floor, building 21, East District, yard 10, northwest Wangdong Road, Haidian District, Beijing 100085 Patentee after: BEIJING IRTOUCH SYSTEMS Co.,Ltd. Address before: 100015 4 floor, block B, M8 tower, 1 Jiuxianqiao East Road, Chaoyang District, Beijing. Patentee before: Three wisdom education Polytron Technologies Inc. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |