CN201886272U - Projection screen with function of electronic whiteboard - Google Patents
Projection screen with function of electronic whiteboard Download PDFInfo
- Publication number
- CN201886272U CN201886272U CN 201020609252 CN201020609252U CN201886272U CN 201886272 U CN201886272 U CN 201886272U CN 201020609252 CN201020609252 CN 201020609252 CN 201020609252 U CN201020609252 U CN 201020609252U CN 201886272 U CN201886272 U CN 201886272U
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- CN
- China
- Prior art keywords
- projection screen
- electronic whiteboard
- function
- hollow reel
- flexible curtain
- Prior art date
- 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.)
- Expired - Lifetime
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a projection screen with a function of an electronic whiteboard, which comprises a hollow reel, a rotary shaft and a flexible screen fabric, wherein the rotary shaft is arranged in an inner cavity of the hollow reel, and the flexible screen fabric contains a positioning circuit. An opening for the flexible screen fabric to pass through is axially arranged on the periphery of the hollow reel, the positioning circuit of the flexible screen fabric is connected with a control circuit, and the upper end of the flexible screen fabric is connected with the rotary shaft. A screen fabric back-and-forth adjusting device is further arranged on the hollow reel. The projection screen is capable of realizing functions of dust-free writing, free writing, remote communication and the like of an interactive electronic whiteboard, also has the advantages of light weight, capability of being curled, easiness in storage and transport, low price and the like, further can provide high-gain, high-contrast, high-definition and wider visual angle in restoration (display) of images of a projector, and can well restore color, tone and layering of the images, and thereby competiveness of products in market is promoted and the projection screen has wide application value.
Description
Technical field
The utility model relates to a kind of electromagnetic induction generating means, relates in particular to a kind of projection screen with interactive electric whiteboard function.
Background technology
Along with the continuous development of electronic technology, blackboard replaces with electronic whiteboard gradually.This product can be converted to electric signal in time with the symbol of writing on blank, inputs to the computing machine that is connected, and finishes remote information exchanges such as editor or printing, transmission by computing machine.Interactive electric whiteboard is a kind of advanced person's education or the auxiliary human-computer interaction device of meeting, it can cooperate instruments such as projector, computer, utilize specific pen with means for holding it in right position to replace mouse at the enterprising line operate of blank, the any operation that can edit file, note, preservation etc. utilizes keyboard and mouse to realize on computers, thus realize dust-free writing, arbitrarily write, function such as long-range interchange.
Existing electronic whiteboard all is tabular at present basically, adopts movable supporting frame during installation or leans on the support on the wall to support.Owing to adopt platy structure, cause the volume ratio of blank bigger, unusual inconvenience during transportation, and also when adopting the traversing carriage mode to use, the floor area of blank is also bigger.Simultaneously, existing electronic whiteboard surface adopts the PET material more, and it is bigger that this material is compared gap at the effect of reduction projector image and projection screen, no matter is gain, contrast or resolution and aspect, visual angle, all be not so good as projection screen, be in particular in that color, tone and stereovision performance are not enough.Therefore, in order to reach brightness and contrast's display effect of projection screen, the user has only the higher projector of purchase lumen number or De Genggao is transferred in the brightness of projector, and the former has increased user's financial burden, the latter has reduced the serviceable life of projector bulb, brings more energy resource consumption simultaneously.
The utility model content
The purpose of this utility model is to overcome the defective of prior art, and a kind of projection screen is provided, and both can realize dust-free writing, arbitrarily writes, interactive electric whiteboard function such as long-range interchange, can curl as required or stretch again simultaneously, is convenient to take in and transport.
The utility model is to realize like this, a kind of projection screen with electronic whiteboard function, comprise a hollow reel, be located at the rotating shaft of described hollow reel inner chamber and contain the flexible curtain of locating circuit, described hollow reel periphery axially offers one and can hold the opening that flexible curtain passes through, location circuit in the described flexible curtain links to each other with control circuit, and flexible curtain upper end is connected with rotating shaft.
Particularly, described rotating shaft is connected with drive motor, by bearing fixing on the bearing seat that is arranged at described rotating shaft two ends.
Particularly, described flexible curtain is arranged with three layers, but wherein surface layer is writing material or has the plane layer that the projection screen materials with function constitutes, and the back side is protective seam, and the middle layer is the carrier that has the circuit of positioning function or have positioning function.
Particularly, each components and parts of forming described control circuit are arranged in the lower house of flexible curtain lower end connection, or are arranged in the described hollow reel.
The utility model control circuit comprises analog switch matrix, signal amplification, shaping, A/D conversion, calculating, communication and power supply function module, and the communication part in the foregoing circuit adopts USB, serial ports or parallel port communication mode, or adopts wireless communication mode.
The utility model also is provided with curtain front and back regulating device on described hollow reel.
Further, regulating device comprises that one regulates tube before and after the described curtain, and with described shaft parallel, this adjusting tube is pressed and is located at the flexible curtain front or the back side, and two ends are regulated the tube support by one and are fixed on the reel.
Projection screen provided by the utility model, both can realize dust-free writing, arbitrarily write, interactive electric whiteboard function such as long-range interchange, also have simultaneously in light weight, can curl and be easy to characteristics such as collection, transportation and low price, when the image of reduction (demonstration) projector, the visual angle of high-gain, high-contrast, high resolving power and broad can be provided, can go back color, tone and the stereovision of original image well, improve the competitive power of product on market, be with a wide range of applications.
Description of drawings
Fig. 1 is the utility model example structure front view;
Fig. 2 is the flexible curtain sectional drawing of the utility model example structure;
Fig. 3 is the utility model example structure hollow reel part sectional drawing;
Fig. 4 is the utility model example structure lateral plan;
Fig. 5 is the utility model embodiment hollow reel and rotating shaft part one end structure synoptic diagram;
Fig. 6 is the utility model embodiment hollow reel and rotating shaft part other end structural representation.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model provides a kind of projection screen with electronic whiteboard function, referring to Fig. 1, Fig. 4, it comprises a hollow reel 1 and contains the flexible curtain 2 of locating circuit, described hollow reel 1 is as the carrying of whole projection screen and positioning and fixing member, it is shaped as a hollow strip cylinder, and two ends are by end cap 11 sealings.The profile of described hollow reel 1 can be circle, perhaps be octagon, sexangle, rectangle, polygonal shape such as square, the employing polygon is preferable, can make hollow reel 1 inwall have at least one locating surface like this, is convenient to be located at the fixing of hollow reel 1 interior associated components.Hollow reel 1 material can be plastic cement, five metals, timber, hard paper shell etc., requires it must have enough rigidity, can not produce tangible deformation when holding each associated components.For ease of projection screen fixing in the field of employment, also be provided with at least two hooks 4 at hollow reel 1 periphery two ends, but hook 4 hollows and reel 1 are one-body molded.
Referring to Fig. 5, Fig. 6, the utility model embodiment is equipped with a rotating shaft 15 in described hollow reel 1 inner chamber, and this rotating shaft 15 can be adopted smooth cylindrical tubing, to alleviate the weight of whole projection screen.Rotating shaft 15 is driven by drive unit 18 and rotates, constitute by drive motor, motor-drive circuit and control piece, drive unit 18 can drive rotating shaft 15 and carry out forward and backward with certain speed, and can also be in the finger lock rotating shaft 15 that stops operating, its control mode is divided into electronic and manual two kinds of control modes.Described drive unit 18 is located at rotating shaft 15 1 ends, and its output shaft is fixedlyed connected with rotating shaft 15, is outward extended with two locating pieces on the described drive unit 18, and drive unit 18 is fixed on hollow reel 1 body.Described rotating shaft 15 two ends are arranged with bearing 14, are supported on the bearing seat 13, and 13 of bearing seats are fixed on the end cap 11 by bearing bridge 12.
Described flexible curtain 2 upper ends are connected with rotating shaft 15, can drive 15 periphery coilings around the shaft by rotating shaft 15, realize taking in function; Flexible curtain 2 is built-in with the location circuit, is connected with control circuit, and described control circuit is the interlock circuit of common electromagnetic-type electronic blank, can realize interactive function.Referring to 3, described hollow reel 1 periphery axially offers opening 110, and opening 110 width can hold when flexible curtain 2 rotates and pass through greater than flexible curtain 2 transverse widths.Like this, contain the flexible curtain 2 of locating circuit and be attached thereto by rotating rotating shaft 15 being set at hollow reel 1 and making, both can realize the electronic whiteboard dust-free writing, arbitrarily write, interactive function such as long-range interchange, flexible curtain 2 is curled under the drive of rotating shaft 15, be accommodated in the hollow reel 1, can prevent destruction and the erosion of external environment, prolong its serviceable life flexible curtain 2 surfaces, can reduce simultaneously the volume of whole projection screen greatly, convenient transportation and use.
Referring to Fig. 2, the flexible curtain 2 of the utility model embodiment is arranged with three layers, and projection pattern can be selected the elasticity curtain for just throwing, and also can select to weave curtain; Wherein but surface layer 21 is writing material or has the plane layer that the projection screen materials with function constitutes, as select for use whitely mould, materials such as ash is moulded, extraordinary PVC, bead, pearl, metal, pure white cloth, the carrier of middle layer 22 for having the circuit of positioning function or having positioning function, the location circuit can be directly printed onto the back side of flexible curtain 21 surface layers, also can be printed on the flexible carrier (as film), can also be to adopt winding mode to be fixed on the flexible carrier (as film, cloth).The back side 23 is protective seam, selects for use various flexible materials to be attached to the location circuit or has on the carrier of location circuit, or adopt spraying method that protective seam is sprayed on the location circuit or have on the carrier of location circuit, to reach the purpose of protection location circuit.
The location circuit in flexible curtain 2 middle layers 22 is an induction location circuit.This location circuit is made up of by a plurality of inductive coils of X-axis and Y direction respectively mutual disconnection, and the two ends of coil are ground connection and the circuit that is connected location circuit curtain respectively.Constantly launch electromagnetic signal by time writer, when nib touches the induction generating means, its electromagnetic signal is passed the induction antenna position, the antenna induction of this position goes out signal, by the induction generating means position signalling of responding to is passed through X, the input port of the lead-in wire transmission control identification circuit of Y direction, through the array gating, control method, bandpass filtering, detection rectification and analog to digital conversion, calculate for the CPU of treatment circuit, judge position coordinates and the various duty of electromagnetic signal at induction antenna, send to computing machine by communication interface, thus control computer identification, show, record etc.
Referring to Fig. 1 and Fig. 4, each components and parts of forming described control circuit can be arranged in the lower house 3 of flexible curtain 2 lower ends connection, or are arranged in the described hollow reel 1, so that the fixing and protection of circuit elements device.When placing in the lower house 3, power supply mode can adopt AC adapter, lithium battery, dry cell power supply, also can be undertaken obtaining direct current after the AC-DC conversion, by the power lead at flexible curtain 2 back sides that are laid in circuit be powered again by hollow reel 1 and external power supply.Described control circuit comprises functional modules such as analog switch matrix, signal amplification, shaping, A/D conversion, calculating, communication, power supply.Communication part in the foregoing circuit can adopt wire communication, as USB, serial ports or parallel port communication, also can adopt wireless communication mode, as radio-frequency transmissions/receiver.Particular circuit configurations can be with other electronics applications consistent, no longer praise at this and to state.
Referring to Fig. 3, Fig. 5, Fig. 6, on described hollow reel 1, also be provided with curtain front and back regulating device, can realize pressing backward or contacting forward the function of flexible curtain 2.Regulating device comprises that one regulates tube 17 and two adjusting tube supports 16 before and after the described curtain, described adjusting tube 17 is the cylindrical tubular object of hollow, the surface is very smooth, parallel with rotating shaft 15, two ends are separately fixed at two and regulate on the tube support 16, the pars intermedia dividing potential drop is located at flexible curtain 2 fronts or the back side, presses close to (being adjacent to) its metope or plate face behind in working order down to realize flexible curtain 2, so that write on flexible curtain 2 surfaces.Regulate tube support 16 and be fixed on the position of two elongated openings 19 offering hollow reel 1 bottom, regulate tube support 16 and be built-in with little bearing, regulate tube 17 and be fixed in the little bearing by web member.Two elongated openings 19 are used for fixing on the one hand adjusts tube support 16, and the user can adjust the front and back position of tube support 16 when mounted by the position of regulating web member according to actual conditions simultaneously.In actual use, when rotating shaft 15 drives flexible curtain 2 liftings, regulate tube 17 because pressure and friction factor, to rotate together with rotating shaft 15, because adjusting tube 17 surfaces are very smooth and two ends are that bearing connects, therefore regulating tube 17 can not cause damage to the surface or the back side of flexible curtain 2.
The above only is the utility model preferred embodiment; its structure is not limited to the above-mentioned shape of enumerating; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. projection screen with electronic whiteboard function, it is characterized in that: comprise a hollow reel, be located at the rotating shaft of described hollow reel inner chamber and contain the flexible curtain of locating circuit, described hollow reel periphery axially offers one and can hold the opening that flexible curtain passes through, location circuit in the described flexible curtain links to each other with control circuit, and flexible curtain upper end is connected with rotating shaft.
2. a kind of projection screen as claimed in claim 1 with electronic whiteboard function, it is characterized in that: described rotating shaft is connected with drive motor, by bearing fixing on the bearing seat that is arranged at described rotating shaft two ends.
3. a kind of projection screen as claimed in claim 1 with electronic whiteboard function; it is characterized in that: described flexible curtain is arranged with three layers; wherein but surface layer is writing material or has the plane layer that the projection screen materials with function constitutes; the back side is protective seam, and the middle layer is the carrier that has the circuit of positioning function or have positioning function.
4. as each described a kind of projection screen with electronic whiteboard function of claim 1-3, it is characterized in that: each components and parts of forming described control circuit are arranged in the lower house of flexible curtain lower end connection, or are arranged in the described hollow reel.
5. a kind of projection screen as claimed in claim 4 with electronic whiteboard function, it is characterized in that: described control circuit comprises analog switch matrix, signal amplification, shaping, A/D conversion, calculating, communication and power supply function module, communication part in the foregoing circuit adopts USB, serial ports or parallel port communication mode, or adopts wireless communication mode.
6. as each described a kind of projection screen of claim 1-3, it is characterized in that: on described hollow reel, also be provided with curtain front and back regulating device with electronic whiteboard function.
7. a kind of projection screen as claimed in claim 6 with electronic whiteboard function, it is characterized in that: regulating device comprises that one regulates tube before and after the described curtain, with described shaft parallel, this adjusting tube is pressed and is located at the flexible curtain front or the back side, and two ends are regulated the tube support by one and are fixed on the reel.
8. a kind of projection screen with electronic whiteboard function as claimed in claim 4 is characterized in that: on described hollow reel, also be provided with curtain front and back regulating device.
9. a kind of projection screen as claimed in claim 8 with electronic whiteboard function, it is characterized in that: regulating device comprises that one regulates tube before and after the described curtain, with described shaft parallel, this adjusting tube is pressed and is located at the flexible curtain front or the back side, and two ends are regulated the tube support by one and are fixed on the reel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020609252 CN201886272U (en) | 2010-11-16 | 2010-11-16 | Projection screen with function of electronic whiteboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020609252 CN201886272U (en) | 2010-11-16 | 2010-11-16 | Projection screen with function of electronic whiteboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886272U true CN201886272U (en) | 2011-06-29 |
Family
ID=44183820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020609252 Expired - Lifetime CN201886272U (en) | 2010-11-16 | 2010-11-16 | Projection screen with function of electronic whiteboard |
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| Country | Link |
|---|---|
| CN (1) | CN201886272U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944966A (en) * | 2012-10-17 | 2013-02-27 | 廖长春 | Interactive type projection screen |
| CN103034372A (en) * | 2012-09-24 | 2013-04-10 | 深圳市海亚科技发展有限公司 | Rolled curtain-type optical induction electronic whiteboard |
| CN103064243A (en) * | 2013-01-06 | 2013-04-24 | 南京芒冠光电科技股份有限公司 | Magnetic projection soft screen system |
| WO2016041096A1 (en) * | 2014-09-15 | 2016-03-24 | 深圳市柔宇科技有限公司 | Flexible screen module and electronic device having the module |
| CN108594584A (en) * | 2018-06-06 | 2018-09-28 | 周光全 | A kind of interactive type projection screen |
| CN109188845A (en) * | 2018-09-11 | 2019-01-11 | 安徽国耀通信科技有限公司 | A kind of film protection projection screen |
| CN109188842A (en) * | 2018-11-02 | 2019-01-11 | 江苏师范大学 | A kind of inflight movies projecting device |
| CN109407458A (en) * | 2018-11-02 | 2019-03-01 | 江苏师范大学 | A kind of aerial projection arrangement |
-
2010
- 2010-11-16 CN CN 201020609252 patent/CN201886272U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034372A (en) * | 2012-09-24 | 2013-04-10 | 深圳市海亚科技发展有限公司 | Rolled curtain-type optical induction electronic whiteboard |
| CN102944966A (en) * | 2012-10-17 | 2013-02-27 | 廖长春 | Interactive type projection screen |
| CN102944966B (en) * | 2012-10-17 | 2014-02-12 | 廖长春 | Interactive type projection screen |
| CN103064243A (en) * | 2013-01-06 | 2013-04-24 | 南京芒冠光电科技股份有限公司 | Magnetic projection soft screen system |
| CN103064243B (en) * | 2013-01-06 | 2015-09-30 | 南京芒冠科技股份有限公司 | A kind of magnetic projection soft screen system |
| CN105723442A (en) * | 2014-09-15 | 2016-06-29 | 深圳市柔宇科技有限公司 | Flexible screen module and electronic device having the same |
| WO2016041096A1 (en) * | 2014-09-15 | 2016-03-24 | 深圳市柔宇科技有限公司 | Flexible screen module and electronic device having the module |
| US10188002B2 (en) | 2014-09-15 | 2019-01-22 | Shenzhen Royole Technologies Co., Ltd. | Flexible screen module and electronic device having the module |
| CN105723442B (en) * | 2014-09-15 | 2019-08-02 | 深圳市柔宇科技有限公司 | Flexible screen mould group and electronic device with the mould group |
| CN108594584A (en) * | 2018-06-06 | 2018-09-28 | 周光全 | A kind of interactive type projection screen |
| CN108594584B (en) * | 2018-06-06 | 2024-05-14 | 周光全 | Interactive projection screen |
| CN109188845A (en) * | 2018-09-11 | 2019-01-11 | 安徽国耀通信科技有限公司 | A kind of film protection projection screen |
| CN109188845B (en) * | 2018-09-11 | 2020-12-08 | 安徽国耀通信科技有限公司 | Film protection projection curtain |
| CN109188842A (en) * | 2018-11-02 | 2019-01-11 | 江苏师范大学 | A kind of inflight movies projecting device |
| CN109407458A (en) * | 2018-11-02 | 2019-03-01 | 江苏师范大学 | A kind of aerial projection arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160817 Address after: 518000, Fuyuan Building, 45 turning street, 617 street, Xin'an, Guangdong, Shenzhen, Baoan District Patentee after: Shenzhen Dongtai science and Technology Co. Ltd. Co Address before: Nanshan District New South Road, SOHO Shenzhen city Guangdong province 518052 ha 807 Patentee before: Liao Changchun |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Hechuang Science Co. Ltd. Assignor: Shenzhen Dongtai science and Technology Co. Ltd. Co Contract record no.: 2017440020100 Denomination of utility model: Projection screen with function of electronic whiteboard Granted publication date: 20110629 License type: Exclusive License Record date: 20171215 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |