CN202649666U - Adsorption type projection screen - Google Patents
Adsorption type projection screen Download PDFInfo
- Publication number
- CN202649666U CN202649666U CN2012201621496U CN201220162149U CN202649666U CN 202649666 U CN202649666 U CN 202649666U CN 2012201621496 U CN2012201621496 U CN 2012201621496U CN 201220162149 U CN201220162149 U CN 201220162149U CN 202649666 U CN202649666 U CN 202649666U
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- Prior art keywords
- projection screen
- magnetic film
- type projection
- adsorption type
- curtain
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- Expired - Fee Related
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- Overhead Projectors And Projection Screens (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses an adsorption type projection screen. A reflection white surface is arranged on the surface of the adsorption type projection screen, and the projection screen comprises a magnetic film made of a magnetic material, the reflection white surface is arranged on the front surface of the magnetic film. The structure of the adsorption type projection screen is simple, the iron substrate property of a greenboard is completely utilized, thus the projection screen is attached on the greenboard to change into a hard board, and an optical pen directly writes on the projection screen to facilitate the office and teaching environment to transit towards the interactive electronic whiteboard, and the cost is low.
Description
Technical field
The utility model relates to shadow casting technique, relates in particular to a kind of absorption type projection screen that can be adsorbed on the green plate.
Background technology
Interactive electronic white board is the new high-tech product that has compiled the multiple high-tech means research and development such as most advanced and sophisticated electronic technology, software engineering, and it in conjunction with computing machine and projector, can realize with no paper office and teaching by using electromagnetic induction principle.And at present office and teaching environment generally use the combination of " green plate+projector+projection screen " to demonstrate, because its structure qualification is difficult to directly replace with the application of interactive electronic white board.
Projection curtain device is used for the light reflection that projector projects is gone out, make the user see distinct picture, be illustrated in figure 1 as existing projection curtain device, it comprises projection screen 4, weight 5, motor 1, rotating shaft 3, stop means 7, shell 2, cable controller 6 and wireless controller 8; Weight 5 is fixed on the downside edge of projection screen 4, makes projection screen 4 be subject to drop-down gravity, allows projection screen 4 surfacings; Rotating shaft 3 is fixed on the upside edge of projection screen 4, rotates with the rotating shaft of motor 1; The user drives rotating shaft 3 rotations by using cable controller 6 and wireless controller 8 can control motor 1, and projection screen 4 is launched or rollings, and stop means 7 is used for preventing motor 1 action excessively, and whole projection curtain device is damaged; In order to guarantee the attractive in appearance of whole projection curtain device, motor, stop means 7 and rotating shaft 3 all are installed in the inside of shell 2, and projection screen 4 is wound on the inside that in the rotating shaft 3, also is positioned at shell 2 when the rolling state.As shown in Figure 2, projection curtain device is fixed on the body of wall 10 usually, is positioned at the top of green plate 9, owing to the reasons such as material of projection screen 4, can not fit between projection screen 4 and the green plate 9, has the gap.
Mainly there is following shortcoming in above-mentioned projection curtain device, and its use that cooperates green plate+projector is difficult to the interactive electronic white board transition:
1, dysgraphia: because projection screen 4 be flexible material, and and green plate between have the gap, can be stressed nowhere when the hard thing of use is write, writing experience is very bad even can't write at all;
2, it is large to write noise: since projection screen 4 materials are limited little, and surface irregularity, thereby its pliability and surface smoothness integral body are not good enough, namely allow to use light pen to write, noise is also very large;
3, the surface is easy to wear: present projection screen 4 is owing to material and technological reason, and the non-constant of its wearing quality uses for a long time hard thing to write and can make its surface abrasion;
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of absorption type projection screen, it takes full advantage of the characteristic of existing green plate built-in metal material, can very entirely be fitted on the green plate, hard thing easy to use is write it, is beneficial to existing office and teaching environment to the transition of interactive electronic white board.
Technical scheme: for achieving the above object, the technical solution adopted in the utility model for the technical scheme that adopts is:
A kind of absorption type projection screen, it is positive, and this projection screen comprises the magnetic film of magnetic material in order to reflect fine flour, reflection fine flour is positioned at the front of magnetic film.
Because the green plate that uses now is all the irony plate, add the magnetic action of magnetic film, thereby projection screen can be fitted on the green plate, make soft projection screen can rely on green plate to become crust, the user just can use with the supporting light pen of interactive electronic white board and write at reflection fine flour like this, has solved the problem that soft projection screen can not be write.
As a kind of project organization, described reflection fine flour can directly be the front of magnetic film, the absorption type projection screen of this structure is single layer structure, magnetic film has been born the effect that is adsorbed on the green plate on the one hand, also born on the other hand the effect of reflection fine flour, just the relevant surfaces processing need to be carried out according to the use needs of reflection fine flour in the front of magnetic film.
As a kind of project organization, this projection screen can also comprise curtain, the back side of described curtain and the front of magnetic film fit, reflection fine flour is the front of curtain, the absorption type projection screen of this structure is double-decker, magnetic film is born the effect that is adsorbed on the green plate, and curtain is born the effect of reflection fine flour, and the front of curtain need to be carried out relevant surfaces and be processed according to the use needs of reflection fine flour.
As a kind of architecture advances, this projection screen can also comprise the resistance magnetic film, and the front of described resistance magnetic film and the back side of magnetic film fit; Because magnetic film directly is fitted on the green plate, magnetic force is larger, be not easy to adopt motor drive mechanism that it is carried out folding and unfolding and (increased the requirement to motor drive mechanism power during rolling, be not easy during expansion to flatten), can effectively deperm magnetic force between film and the green plate of the increase of resistance magnetic film, simultaneously can guarantee when projection screen launches the applying of projection screen and green plate.
Beneficial effect: the absorption type projection screen that the utility model provides, it is simple in structure, and take full advantage of the irony character of green plate, projection screen can be fitted on the green plate become hard panel, light pen can directly be write at projection screen, be convenient to office and teaching environment to the interactive electronic white board transition, with low cost.
Description of drawings
Fig. 1 is that existing projection curtain device is installed in the structural representation of facing on the body of wall;
Fig. 2 is that existing projection curtain device is installed in the side-looking structural representation on the body of wall;
Fig. 3, Fig. 4, Fig. 5, Fig. 6 are several structural representations of projection screen of the present utility model;
Fig. 7 is that employing projection curtain device of the present utility model is installed in the side-looking structural representation on the body of wall.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
A kind of front is the absorption type projection screen 4 of reflection fine flour, comprises the magnetic film 42 of magnetic material, and reflection fine flour is positioned at the front of magnetic film 42.
As shown in Figure 3, this projection screen 4 can only be made of magnetic film 42, and reflection fine flour is the front of magnetic film 42.
As shown in Figure 4, this projection screen 4 can be made of magnetic film 42 and curtain 41, and the front of the back side of curtain 41 and magnetic film 42 fits, and reflection fine flour is the front of curtain 41.
As shown in Figure 5, this projection screen 4 can be made of resistance magnetic film 43, magnetic film 42 and curtain 41, and the front of resistance magnetic film 43 and the back side of magnetic film 42 fit, and the front of the back side of curtain 41 and magnetic film 42 fits, and reflection fine flour is the front of curtain 41.
As shown in Figure 6, this curtain 4 can be made of resistance magnetic film 43 and magnetic film 42, and the front of resistance magnetic film 43 and the back side of magnetic film 42 fit, and reflection fine flour is the front of magnetic film 42.
After the projection screen 4 that the utility model provides is installed on the projection curtain device, side view when it uses as shown in Figure 7, as seen from Figure 7, projection screen 4 smooth being attached on the green plate 9, soft projection screen 4 relies on green plate to become crust, can carry out writing demonstration for the user.
The above only is preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. an absorption type projection screen (4), it is positive to be reflection fine flour, and it is characterized in that: this projection screen (4) comprises the magnetic film (42) of magnetic material, and reflection fine flour is positioned at the front of magnetic film (42).
2. absorption type projection screen according to claim 1 (4), it is characterized in that: described reflection fine flour is the front of magnetic film (42).
3. absorption type projection screen according to claim 1 (4), it is characterized in that: this projection screen (4) also comprises curtain (41), the front of the back side of described curtain (41) and magnetic film (42) fits, and reflection fine flour is the front of curtain (41).
4. according to claim 1 or 3 described absorption type projection screens (4), it is characterized in that: this projection screen (4) also comprises resistance magnetic film (43), and the back side of the front of described resistance magnetic film (43) and magnetic film (42) fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201621496U CN202649666U (en) | 2012-04-17 | 2012-04-17 | Adsorption type projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201621496U CN202649666U (en) | 2012-04-17 | 2012-04-17 | Adsorption type projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649666U true CN202649666U (en) | 2013-01-02 |
Family
ID=47418752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201621496U Expired - Fee Related CN202649666U (en) | 2012-04-17 | 2012-04-17 | Adsorption type projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103543594A (en) * | 2013-10-12 | 2014-01-29 | 周永清 | Soft projection curtain device and soft electronic whiteboard system comprising same |
| CN114690528A (en) * | 2022-04-07 | 2022-07-01 | 深圳市海视源科技有限公司 | Double-layer electronic writing screen and installation method |
-
2012
- 2012-04-17 CN CN2012201621496U patent/CN202649666U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103543594A (en) * | 2013-10-12 | 2014-01-29 | 周永清 | Soft projection curtain device and soft electronic whiteboard system comprising same |
| CN103543594B (en) * | 2013-10-12 | 2015-08-05 | 南京通派光电科技有限公司 | Projecting soft screen apparatus and comprise the soft electric whiteboard system of this projecting soft screen apparatus |
| CN114690528A (en) * | 2022-04-07 | 2022-07-01 | 深圳市海视源科技有限公司 | Double-layer electronic writing screen and installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20160417 |