CN105270046A - Blackboard without powder - Google Patents
Blackboard without powder Download PDFInfo
- Publication number
- CN105270046A CN105270046A CN201410284451.2A CN201410284451A CN105270046A CN 105270046 A CN105270046 A CN 105270046A CN 201410284451 A CN201410284451 A CN 201410284451A CN 105270046 A CN105270046 A CN 105270046A
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- CN
- China
- Prior art keywords
- blackboard
- powder
- powders
- board
- signal
- 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.)
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Abstract
The invention provides a blackboard without powders. The blackboard comprises a pressure sensing switch (1), a powder eruption device (2), an air circulation system (3), and a thin board (4) which is hollow inside. A blackboard pen touches a pressure sensor on the surface of the blackboard. When the sensor receives a signal and generates static electricity on a handwriting position on the inner surface of a front board of the blackboard, the signal is transmitted to the powder eruption device (2) which is inlaid on a corresponding position on the rear board of the blackboard. After the powder eruption device (2) receives the signal, the powder eruption device (2) sprays powders, and the powders are absorbed on the inner surface of the front board because of static electricity, and part of unabsorbed powders fall in a groove under the blackboard and wait to be recycled after use ends. When the pressure sensor on the front surface of the blackboard senses pressure for the second time, a power switch on a corresponding position is turned off, and the static electricity disappears, the attached powders fall off, so as to ensure convenience of modification. After one time use, the power supply on the surface of the blackboard is turned off, and the powders fall in the groove on the lower part of the back board.
Description
Technical field
The present invention relates to a kind of blackboard, specifically relates to a kind of without powder blackboard.
Background technology
Along with the progress in epoch, education is more and more subject to people's attention, and blackboard takes on indispensable role especially in the teaching of campus.Traditional blackboard, can cause a large amount of dusts when wiping changes, the teacher worked on dais all the year round often unavoidably sucks the chalk dust kicked up, and causes a hidden trouble to its health.Though there is the release of dust-free chalk successively, its effect is not still fine.Although there is projecting apparatus, the invention of tangible display screen etc., projecting apparatus can not meet part teacher and to attend class the requirement of writing on the blackboard, though and touch display screen to be of modern blackboard well substitute instrument, but because it is relative to traditional blackboard fancy price, make it does not popularized well.
Some present dust-free blackboards are utilize hydroblasting to replace to erase the board with chalkboard eraser mostly, although so limitedly reduce kicking up of chalk dust, but the blackboard surface after water wets can affect the writing effect of chalk, and wait for that the evaporation of water on blackboard surface can waste valuable time in classroom, affect teaching process.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of novel without powder blackboard.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
The present invention forms by with lower part: pressure-sensitive switch 1, powder spray transmitting apparatus 2, airflow circulating system 3, blackboard overall configuration are the slim planks 4 of an inner hollow.
Workflow of the present invention is:
(1) the broken end of enough chalks is poured into from powder injection in advance.
(2) under the prerequisite switched on power, in use, naturally write on blackboard with the blackboard pen provided.
(3) blackboard pen touches the pressure sensor on blackboard surface, and sensor streaks while position produces electrostatic at Received signal strength at the header board inner surface person's handwriting of blackboard, signal is passed to the powder spray transmitting apparatus being embedded in relevant position on plate face after blackboard.
(4) powder spray transmitting apparatus sprays powder after receiving signal, and powder is because Electrostatic Absorption is on header board inner surface, and the not adsorbable powder of part drops in blackboard lower grooves, reclaims after waiting end to be used.
(5) when the pressure sensor second time on blackboard front surface experiences pressure, corresponding site power switch is closed, and electrostatic disappears, and adheres to superincumbent powder and falls, and ensures the convenience of amendment.
(6) once use terminate after blackboard surface power-off, all electrostatic disappears on the surface, is originally allly dropped to by the powder adsorbed in the groove of backboard bottom.
(7) powder in the powder collection groove of blackboard bottom is assembled in the powder collection case of airflow circulating system again at powder spray transmitting apparatus, prepares to use next time.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is all sealed in blackboard inside due to chalk dust, can realize complete zero chalk dust.Chalk dust reusable edible, has environmental protection, and resource such as repeatedly to utilize at the benefit.Blackboard front surface and traditional blackboard are as good as, and facilitate the teacher of custom traditional blackboard writing on the blackboard to work, and ensure the versatility of user, but must keep the clean and tidy of front surface and permeability after using, and ensure that design usage of the present invention does not receive interference.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of the present invention without powder blackboard
Fig. 2 is the internal structure schematic diagram of the present invention without powder blackboard.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
Principle of writing of the present invention is similar to ink-jet printer, header board is cut and is divided into a copy by a copy pixel, and the pressure sensor being respectively each position controls the powder spray hair device on static switching and rear plate.
(1) the broken end of enough chalks is poured into from powder injection in advance.
(2) under the prerequisite switched on power, in use, naturally write on blackboard with the blackboard pen provided.
(3) blackboard pen touches the pressure sensor on blackboard surface, and sensor streaks while position produces electrostatic at Received signal strength at the header board inner surface person's handwriting of blackboard, signal is passed to the powder spray transmitting apparatus being embedded in relevant position on plate face after blackboard.
(4) powder spray transmitting apparatus sprays powder after receiving signal, and powder is because Electrostatic Absorption is on header board inner surface, and the not adsorbable powder of part drops in blackboard lower grooves, reclaims after waiting end to be used.
(5) when the pressure sensor second time on blackboard front surface experiences pressure, corresponding site power switch is closed, and electrostatic disappears, and adheres to superincumbent powder and falls, and ensures the convenience of amendment.
(6) once use terminate after blackboard surface power-off, all electrostatic disappears on the surface, is originally allly dropped to by the powder adsorbed in the groove of backboard bottom.
(7) powder in the powder collection groove of blackboard bottom is assembled in the powder collection case of airflow circulating system again at powder spray transmitting apparatus, prepares to use next time.
The undeclared part related in the present invention is same as the prior art or adopt prior art to be realized.
Claims (3)
1. without a powder blackboard, comprising: pressure-sensitive switch (1), powder spray transmitting apparatus (2), airflow circulating system (3), the slim plank (4) of inner hollow, dust collecting box, is characterized in that: described pressure sensing triggers powder spray and is clamminess attached; Described powder totally-enclosed and recycling.
2. pressure sensing triggering powder spray according to claim 1 is clamminess attached, it is characterized in that: described header board pressurized position produces electrostatic, causes adsorbing powder dust.
3. powder totally-enclosed according to claim 1 and recycling, is characterized in that: described powder is all retained in blackboard inside; The described dust that drives because air flows comes back to dust collecting box in pipe interior flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410284451.2A CN105270046A (en) | 2014-06-23 | 2014-06-23 | Blackboard without powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410284451.2A CN105270046A (en) | 2014-06-23 | 2014-06-23 | Blackboard without powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105270046A true CN105270046A (en) | 2016-01-27 |
Family
ID=55140242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410284451.2A Pending CN105270046A (en) | 2014-06-23 | 2014-06-23 | Blackboard without powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105270046A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945431A (en) * | 2016-11-28 | 2017-07-14 | 杨宇豪 | A kind of electronic teaching board system |
| CN107020864A (en) * | 2016-02-02 | 2017-08-08 | 上海市格致中学 | A kind of luminous blackboard |
| CN108297583A (en) * | 2017-12-28 | 2018-07-20 | 平顶山学院 | Art Design room dust-absorbing blackboard device |
-
2014
- 2014-06-23 CN CN201410284451.2A patent/CN105270046A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020864A (en) * | 2016-02-02 | 2017-08-08 | 上海市格致中学 | A kind of luminous blackboard |
| CN106945431A (en) * | 2016-11-28 | 2017-07-14 | 杨宇豪 | A kind of electronic teaching board system |
| CN108297583A (en) * | 2017-12-28 | 2018-07-20 | 平顶山学院 | Art Design room dust-absorbing blackboard device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |