CN105549316B - Teaching board book projecting method based on automatically controlled glass - Google Patents
Teaching board book projecting method based on automatically controlled glass Download PDFInfo
- Publication number
- CN105549316B CN105549316B CN201610068325.2A CN201610068325A CN105549316B CN 105549316 B CN105549316 B CN 105549316B CN 201610068325 A CN201610068325 A CN 201610068325A CN 105549316 B CN105549316 B CN 105549316B
- Authority
- CN
- China
- Prior art keywords
- projection
- liquid crystal
- plate
- glass
- writing
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a kind of teaching board book projecting method based on automatically controlled glass, teaching board book optical projection system includes writing on the blackboard projection plate (1), background mechanism and projecting apparatus (2), described background mechanism is located at the rear side of writing on the blackboard projection plate (1) and mutually pressed close to it, the writing on the blackboard projection plate (1) is made of clear material, described background mechanism includes fixed black background board (3) and projection screen plate (4), described projection screen plate (4) is located between fixed black background board (3) and writing on the blackboard projection plate (1), projection screen plate (4) is electrically-controlled liquid crystal photo chromic glass, electrically-controlled liquid crystal photo chromic glass transparent shape when being powered, it is then white during power-off, the projecting apparatus (2) is projected on the electrically-controlled liquid crystal photo chromic glass of power-off in projection.The present invention can increase effective write area, and the position or outage area that can change electrically-controlled liquid crystal photo chromic glass change projected position, and make different angles can see the content of projection clearly per capita.
Description
The application is application number 201410727112.7,03 day December 2014 applying date, denomination of invention " based on automatically controlled glass
The divisional application of the teaching board book optical projection system of glass ".
Technical field
The present invention relates to teaching aid field, specifically a kind of teaching board book projection side based on automatically controlled glass
Method.
Background technology
Blackboard for instructor's writing on the blackboard is that classroom is essential, for the teaching of modernization, and multimedia is thrown
Shadow naturally also seems indispensable.The teaching equipment that blackboard is combined with projection screen is all employed in many classrooms, should meet old
The demand of teacher's writing on the blackboard, and projection teaching can be carried out using projector equipment.In the prior art, projector equipment includes projecting apparatus and projection
On curtain, projection screen and the blackboard typically same wall located at before classroom, but because wall area is limited, projection screen and blackboard are often
There is overlapping part.Therefore there is following technical problem in the writing on the blackboard projector equipment of prior art：
1st, projection screen and blackboard lap meeting shield portions blackboard, some projection screens have even covered the black of almost half
Plate, greatly reduces effective write area of blackboard；
2nd, the installation site of prior art projection screen is changeless, if projection screen is arranged on the left side in classroom, right side
Classmate's association is affected, similarly, if projection screen is arranged on the right side in classroom, the classmate's association in left side is influenceed by certain.If
Projection screen is arranged in the middle of classroom, can not only influence the viewing of both sides classmate, can also influence teacher's writing on the blackboard；
3rd, in order to increase effective write area of blackboard, it is necessary to turn off projecting apparatus in the middle of at school, projection screen is risen,
Need projection to fall once more, not only bother, and waste time in classroom；
4th, after being write on whole blackboard, if desired multimedia projector is aided in, and now projection screen can block blackboard part
Chalk writing, causes certain inconvenience, to use these chalk writings again, needs to turn off projecting apparatus again, by projection screen
Rise.
The content of the invention
In view of this, the blackboard effective write area of reduction overlapping with projection screen that the present invention exists for above-mentioned prior art
The problems such as there is provided a kind of effective write area is big, projected position the is adjustable teaching board book projection side based on automatically controlled glass
Method.
The technical solution of the present invention is to provide a kind of projection of the teaching board book based on automatically controlled glass of following structure
System, including writing on the blackboard projection plate, background mechanism and projecting apparatus, described background mechanism be located at the rear side of writing on the blackboard projection plate and and its
Mutually press close to, the writing on the blackboard projection plate is made of clear material, described background mechanism includes fixed black background board and projection screen
Plate, described projection screen plate is located between black background plate and writing on the blackboard projection plate, and projection screen plate is by polylith electrically-controlled liquid crystal discoloration glass
Glass plate is formed by connecting, electrically-controlled liquid crystal photo chromic glass plate transparent shape, then white during power-off, every piece of liquid crystal color-changing glass when being powered
Glass plate is powered by corresponding circuit, and the corresponding liquid crystal color-changing glass plate of projected position is powered off to form view field, described
Projector in described view field.
Using above structure, the present invention compared with prior art, with advantages below：Using the present invention, due to background machine
Structure is close on the writing on the blackboard projection plate being made of clear material, background when fixed black background board is used as writing on the blackboard, in plate
The respective regions writing on the blackboard of book projection plate, its black background can allow the people paid attention to the class to see the content of writing on the blackboard clearly, and electrically-controlled liquid crystal discoloration glass
Glass is white when powering off, background when being used as projection, projects on the region, can clearly show that the content of projection, nothing
Then it is powered when need to project, makes its transparent shape, now fixed black background board thereafter is just all as writing on the blackboard projection plate
Background.The present invention can increase effective write area, and the position or outage area that can change electrically-controlled liquid crystal photo chromic glass change
Become projected position, make different angles can see the content of projection clearly per capita.
Preferably, described polylith liquid crystal color-changing glass plate is provided with light-sensitive element, described projecting apparatus be provided with
The lasing light emitter that light-sensitive element is engaged, the power supply circuit connection of the corresponding liquid crystal color-changing glass plate of described light-sensitive element.Adjust
During whole projected position, projecting apparatus is slided along rail plate, and lasing light emitter touches the corresponding light-sensitive element of liquid crystal color-changing glass plate, then
Some liquid crystal color-changing glass plates power-off near the liquid crystal color-changing glass plate, forms new view field.
Preferably, being provided with lens cap on the projection lens of projecting apparatus, when pause projection or end projection, lens cap is used
Projection lens is blocked, lasing light emitter touches light-sensitive element, controlled to be powered to the electrically-controlled liquid crystal photo chromic glass of power-off by light-sensitive element.This
Sample avoids the worry of prior art folding and unfolding projection screen, and former view field, which just turns into, can write the region of writing on the blackboard, effectively utilizes
The write area of writing on the blackboard projection plate.
Preferably, when starting to project or continuing projection, open lens cap, light-sensitive element is touched by lasing light emitter, it is photosensitive
Element control electrically-controlled liquid crystal photo chromic glass homolographic projection region power-off.It is easy to operating mode of the pause projection with continuing to project to switch.
Preferably, the transparent material that writing on the blackboard projection plate is made can realize the diffusing reflection of light.In order to different angles
The spectators of degree can see the content of writing on the blackboard and projection clearly.
Brief description of the drawings
Fig. 1 is structural representation (first state) of the invention；
Fig. 2 is structural representation (the second state) of the invention；
Fig. 3 is projection and the structural representation of rail plate；
As illustrated, 1, writing on the blackboard projection plate, 2, projecting apparatus, 2.1, projection lens, 2.2, lens cap, 3, fixed black background
Plate, 4, projection screen plate, 4.1, liquid crystal color-changing glass plate, 5, rail plate, 6, light-sensitive element, 7, lasing light emitter.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but the present invention is not restricted to these
Embodiment.
The present invention covers any replacement, modification, equivalent method and scheme made in the spirit and scope of the present invention.For
Make the public have the present invention thoroughly to understand, concrete details is described in detail in present invention below preferred embodiment, and
Description without these details can also understand the present invention completely for a person skilled in the art.In addition, the accompanying drawing of the present invention
In in order to illustrate the need for, be not drawn to scale accurately completely, be explained herein.
As shown in Figure 1,2 and 3, a kind of teaching board book projecting method based on automatically controlled glass of the invention, using teaching
Writing on the blackboard optical projection system is used, described teaching board book optical projection system includes writing on the blackboard projection plate 1, background mechanism and projecting apparatus 2, described
Background mechanism be located at writing on the blackboard projection plate 1 rear side and mutually press close to it, the writing on the blackboard projection plate 1 is made of clear material, institute
The background mechanism stated includes fixed black background board 3 and projection screen plate 4, and described projection screen plate 4 is located at fixed black background board 3
Between writing on the blackboard projection plate 1, projection screen plate 4 is formed by connecting by polylith electrically-controlled liquid crystal photo chromic glass plate, electrically-controlled liquid crystal photo chromic glass
The transparent shape when being powered, then white during power-off, every piece of liquid crystal color-changing glass plate 4.1 is powered by corresponding circuit, to throwing
The corresponding liquid crystal color-changing glass plate 4.1 of shadow position is powered off to form view field, and described projecting apparatus 2 is projected on described projection
Region.
It should be noted that：" transparent " of " the writing on the blackboard projection plate 1 is made of clear material " is nisi transparent, including
The state such as translucent, can see font clearly to require using spectators' transmission, set its transparency, such as after frosted, its transparency
It can reduce, the diffusing reflection after frosted can make one eye and see more clearly.
Electrically-controlled liquid crystal photo chromic glass is also electronic-control dimming glass, by liquid crystal film by way of HTHP, sandwich package
High-tech photoelectric glass product, user can control the arrangement of liquid crystal molecule by whether being powered for electric current, from
And reach the final purpose of control glass transparent and opaque state.Liquid crystal molecule is arranged in a linear in the energized state, at this moment
Liquid-crystalline glasses printing opacity and transparent；During off-position, liquid crystal molecule is in scattering state and white, at this time liquid crystal film printing opacity but not
It is transparent.
As illustrated in fig. 1 and 2, the structure under two kinds of different conditions of the invention is respectively illustrated, Fig. 1 is projection screen plate in power-off
Projection state, Fig. 2 is projection screen plate in energization pellucidity.It is specific as follows：
Described polylith liquid crystal color-changing glass plate 4.1 (can be arranged to correspond, can also have provided with light-sensitive element 6
Selectively set), described projecting apparatus 2 is provided with the lasing light emitter 7 being engaged with light-sensitive element 6, described light-sensitive element 6 and its
The power supply circuit connection of correspondence liquid crystal color-changing glass plate 4.1.When adjusting projected position, projecting apparatus is slided along rail plate, is swashed
Light source touches the corresponding light-sensitive element of liquid crystal color-changing glass plate, then some liquid crystal color-changing glass near the liquid crystal color-changing glass plate
Plate is powered off (centered on that liquid crystal color-changing glass plate that lasing light emitter is aligned), forms new view field.
As shown in figure 3, being provided with lens cap 2.1 on the projection lens of projecting apparatus 2, when pause projection or end projection, use
Lens cap 2.1 blocks projection lens, and lasing light emitter 7 touches light-sensitive element 6, and the electrically-controlled liquid crystal change to power-off is controlled by light-sensitive element 6
Color glass is powered；
When starting to project or continuing projection, lens cap 2.1 is opened, light-sensitive element 6, light-sensitive element 6 are touched by lasing light emitter 7
Control the power-off of electrically-controlled liquid crystal photo chromic glass homolographic projection region.
The transparent material that writing on the blackboard projection plate 1 is made can realize the diffusing reflection of light.
" lens cap blocks projection lens " is intended merely to easy to use in classroom or teaching process, is not off projection
The power supply of instrument, also needs to close projecting apparatus power supply after end.
It is consistent with white background because the color of the white letter written with chalk on writing on the blackboard projection plate is white, therefore writing on the blackboard projection
The white chalk of optional position does not influence drop shadow effect on plate, that is, when projecting, and is not required to wipe the white letter written with chalk of view field,
After projection disappears, white letter written with chalk can be continuing with.
The present invention also has the advantages that prior art is not had：Using ground glass or frosted lucite in humidity
Do not influence the writing effect of chalk under state, therefore wet towel can be used to regard blackboard eraser, it is to avoid dust is to user's lung
The infringement in portion.
Only preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This
Invention is not only limited to above example, and its concrete structure allows to change.In a word, all guarantors in independent claims of the present invention
The various change made in the range of shield is within the scope of the present invention.
Claims (4)
1. a kind of teaching board book projecting method based on automatically controlled glass, using teaching board book optical projection system, it is characterised in that：
Described teaching board book projection includes writing on the blackboard projection plate (1), background mechanism and projecting apparatus (2), and described background mechanism is located at
The rear side of writing on the blackboard projection plate (1) is simultaneously mutually pressed close to it, and the writing on the blackboard projection plate (1) is made of clear material, described background machine
Structure includes fixed black background board (3) and projection screen plate (4), described projection screen plate (4) be located at fixed black background board (3) and
Between writing on the blackboard projection plate (1), projection screen plate (4) is formed by connecting by polylith electrically-controlled liquid crystal photo chromic glass plate (4.1), and electrically-controlled liquid crystal becomes
Color glass transparent shape when being powered, then white during power-off, every piece of liquid crystal color-changing glass plate (4.1) supplies by corresponding circuit
Electricity, is powered off to form view field, described projecting apparatus (2) projection to the corresponding liquid crystal color-changing glass plate (4.1) of projected position
In described view field；
Described polylith liquid crystal color-changing glass plate (4.1) is provided with light-sensitive element (6), and described projecting apparatus (2) is provided with and light
The lasing light emitter (7) that quick element (6) is engaged, the power supply of the corresponding liquid crystal color-changing glass plate (4.1) of described light-sensitive element (6)
Circuit is connected；
When adjusting projected position, projecting apparatus is slided along rail plate, and lasing light emitter touches the corresponding photosensitive of liquid crystal color-changing glass plate
Element, then some liquid crystal color-changing glass plates power-off near the liquid crystal color-changing glass plate, is become with that liquid crystal that lasing light emitter is aligned
Centered on color glass plate, new view field is formed.
2. the teaching board book projecting method according to claim 1 based on automatically controlled glass, it is characterised in that：In projecting apparatus
(2) when projection lens is provided with lens cap (2.1), pause projection or end projection, projection lens is blocked with lens cap (2.1)
Head, lasing light emitter (7) touches light-sensitive element (6), is controlled to be powered to the electrically-controlled liquid crystal photo chromic glass of power-off by light-sensitive element (6).
3. the teaching board book projecting method based on automatically controlled glass according to claim 2, it is characterised in that：Starting to throw
When shadow or continuation are projected, lens cap (2.1) is opened, light-sensitive element (6) is touched by lasing light emitter (7), light-sensitive element (6) control is automatically controlled
Liquid crystal color-changing glass homolographic projection region is powered off.
4. the teaching board book projecting method according to claim 3 based on automatically controlled glass, it is characterised in that：It is described to be made
The transparent material of writing on the blackboard projection plate (1) can realize the diffusing reflection of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068325.2A CN105549316B (en) | 2014-12-03 | 2014-12-03 | Teaching board book projecting method based on automatically controlled glass |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068325.2A CN105549316B (en) | 2014-12-03 | 2014-12-03 | Teaching board book projecting method based on automatically controlled glass |
| CN201410727112.7A CN104375369B (en) | 2014-12-03 | 2014-12-03 | Teaching board book optical projection system based on automatically controlled glass |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727112.7A Division CN104375369B (en) | 2014-12-03 | 2014-12-03 | Teaching board book optical projection system based on automatically controlled glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105549316A CN105549316A (en) | 2016-05-04 |
| CN105549316B true CN105549316B (en) | 2017-08-11 |
Family
ID=52554382
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727112.7A Expired - Fee Related CN104375369B (en) | 2014-12-03 | 2014-12-03 | Teaching board book optical projection system based on automatically controlled glass |
| CN201610068325.2A Expired - Fee Related CN105549316B (en) | 2014-12-03 | 2014-12-03 | Teaching board book projecting method based on automatically controlled glass |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727112.7A Expired - Fee Related CN104375369B (en) | 2014-12-03 | 2014-12-03 | Teaching board book optical projection system based on automatically controlled glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104375369B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375369B (en) * | 2014-12-03 | 2016-08-24 | 中国计量学院 | Teaching board book optical projection system based on automatically controlled glass |
| CN109166358A (en) * | 2018-09-25 | 2019-01-08 | 上海优谦智能科技有限公司 | A kind of multi-modal tutoring system based on Internet of Things |
| CN114371592A (en) * | 2022-02-14 | 2022-04-19 | 四川众森同越科技有限公司 | Teaching demonstration integrated machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200992070Y (en) * | 2006-12-15 | 2007-12-19 | 苗家远 | Liquid crystal projection blackboard |
| CN202911381U (en) * | 2012-12-03 | 2013-05-01 | 佳木斯大学 | Teaching blackboard for higher mathematics |
| CN203786419U (en) * | 2014-04-23 | 2014-08-20 | 量子通信科技股份（香港）有限公司 | Color-changing sunglasses based on liquid crystal |
| CN104375369B (en) * | 2014-12-03 | 2016-08-24 | 中国计量学院 | Teaching board book optical projection system based on automatically controlled glass |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2710948Y (en) * | 2004-06-25 | 2005-07-20 | 邓玉阁 | Automatic color-changing glass wind-screen of automobile |
| CN204215137U (en) * | 2014-12-03 | 2015-03-18 | 中国计量学院 | A kind of teaching board book optical projection system based on automatically controlled glass |
-
2014
- 2014-12-03 CN CN201410727112.7A patent/CN104375369B/en not_active Expired - Fee Related
- 2014-12-03 CN CN201610068325.2A patent/CN105549316B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200992070Y (en) * | 2006-12-15 | 2007-12-19 | 苗家远 | Liquid crystal projection blackboard |
| CN202911381U (en) * | 2012-12-03 | 2013-05-01 | 佳木斯大学 | Teaching blackboard for higher mathematics |
| CN203786419U (en) * | 2014-04-23 | 2014-08-20 | 量子通信科技股份（香港）有限公司 | Color-changing sunglasses based on liquid crystal |
| CN104375369B (en) * | 2014-12-03 | 2016-08-24 | 中国计量学院 | Teaching board book optical projection system based on automatically controlled glass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105549316A (en) | 2016-05-04 |
| CN104375369B (en) | 2016-08-24 |
| CN104375369A (en) | 2015-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0193401B1 (en) | Projection type liquid crystal display device | |
| CN105549316B (en) | Teaching board book projecting method based on automatically controlled glass | |
| CN206450918U (en) | Liquid crystal light modulation interactive electric whiteboard | |
| CN105785697B (en) | Writing on the blackboard optical projection system based on automatically controlled glass | |
| CN104330949B (en) | Teaching board book projector mechanism | |
| CN204215139U (en) | A kind of teaching board book projector mechanism | |
| KR100432201B1 (en) | An advertisement apparatus for using a light swiching device | |
| CN204215137U (en) | A kind of teaching board book optical projection system based on automatically controlled glass | |
| CN108784182A (en) | A kind of dynamic and the static Multi-layer painting frame combined | |
| CN204215138U (en) | A kind of teaching board book optical projection system | |
| CN104375370B (en) | Teaching board book projection arrangement | |
| CN104345539B (en) | The control method of teaching board book optical projection system | |
| CN107703655B (en) | Projectable liquid crystal blackboard | |
| CN206479758U (en) | A kind of new teaching projector | |
| CN204241824U (en) | A kind of teaching board book projection arrangement | |
| CN104330950B (en) | Teaching board book optical projection system | |
| CN104464392B (en) | The control method of teaching board book projection arrangement | |
| KR102197018B1 (en) | Hologram Display System using PDLCD and voltage controller | |
| CN207068276U (en) | A kind of projection arrangement and system for Writing-painting | |
| KR101754911B1 (en) | Board for education | |
| KR200466688Y1 (en) | Combined writing board screen | |
| CN104375368B (en) | The control method of teaching board book projector mechanism | |
| CN206497618U (en) | A kind of painting and calligraphy copy instrument | |
| CN207718347U (en) | A kind of touch-control blackboard | |
| CN107784895A (en) | A kind of projection arrangement and system for Writing-painting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant after: China Jiliang University Address before: Hangzhou City, Zhejiang province 310018 Jianggan District Xiasha Higher Education Park source Street No. 258 Applicant before: China Jiliang University |
|
| GR01 | Patent grant | ||
| 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: 20170811 Termination date: 20171203 |