CN203142163U - Blackboard - Google Patents
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- Publication number
- CN203142163U CN203142163U CN 201320100923 CN201320100923U CN203142163U CN 203142163 U CN203142163 U CN 203142163U CN 201320100923 CN201320100923 CN 201320100923 CN 201320100923 U CN201320100923 U CN 201320100923U CN 203142163 U CN203142163 U CN 203142163U
- Authority
- CN
- China
- Prior art keywords
- panel
- blackboard
- right panel
- segmental arc
- rectangle frame
- 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
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Abstract
The utility model discloses a blackboard, which is characterized in that a left panel, a right panel and a movable panel are arranged in a rectangular frame; the left and right panels are respectively fixedly arranged at corresponding end parts of the rectangular frame, and the area between the left and right panels is a rear projector suspending area; the movable panel is of a planer structure, the upper and lower ends of the movable panel are connected with guide tracks on the corresponding frame strips of the rectangular frame in a sliding mode, the movable panel can slide left and right along the guide tracks, the right part of the left panel is a planar section, and the left part of the left panel is bent forwards to from an arc section; and the left part of the right panel is a planar section, and the right part of the right panel is forwards bent to form an arc section. According to the blackboard, the structures of the left and right panels are adjusted on the base of the traditional structure, and are changed to the present structure of the planar section and the arc section from the original planar structure, thus enabling students sitting at two sides of a classroom to see the writing content on the blackboard clearly, ensuring the normal processing of teaching and protecting the vision of the students.
Description
Technical field
The utility model belongs to teaching application apparatus field, specifically, relates in particular to a kind of blackboard.
Background technology
At present, the blackboard that uses in the teaching is generally fabricated structure, and it comprises rectangle frame, is provided with the panel of three planar structures in rectangle frame, these three panels are respectively left panel, right panel and drop front, and wherein left and right sides panel is installed in the corresponding end of rectangle frame respectively.And the zone between the left/right panel is that the district is hung in rear-projection, can hang the district in this rear-projection during use and hang rear-projection.Described drop front is positioned at the place ahead of left and right sides panel, and the guide rail on the corresponding moulding with rectangle frame of the upper and lower side of this drop front is slidingly connected, and drop front can horizontally slip along guide rail.
Because left and right sides panel is planar structure, owing to the reflection of light, the student who is sitting in the both sides, classroom does not usually see content written on Chu's blackboard again, has not only brought very big inconvenience for teaching, and influence student's eyesight easily, need badly for this reason and solve the problems of the technologies described above.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of blackboard, can see content written on the blackboard clearly so that be sitting in the student of both sides, classroom.
The technical solution of the utility model is as follows: a kind of blackboard, comprise rectangle frame (1), in rectangle frame (1), be provided with left panel (2), right panel (3) and drop front (4), wherein left panel (2) and right panel (3) are installed in the corresponding end of rectangle frame (1) respectively, and the zone between the left/right panel (2,3) is that district (5) is hung in rear-projection; Described drop front (4) is planar structure, and be positioned at the place aheads of left/right panel (2,3), the upper and lower side of this drop front (4) respectively with the corresponding moulding of described rectangle frame (1) on guide rail (6) be slidingly connected, and drop front (4) can horizontally slip along guide rail (6), it is characterized in that: the right part of described left panel (2) is planar section (2a), the left part of this left panel (2) forms segmental arc (2b) after front curve; The left part of described right panel (3) is planar section, and the right part of this right panel (3) forms segmental arc after front curve.
The utility model is on the basis of traditional structure; adjusted the structure of left panel (2) and right panel (3); and they are adjusted into present planar section and segmental arc structure by original planar structure; so just can make the student who is sitting in the both sides, classroom can see content written on the blackboard clearly well; what not only can guarantee to impart knowledge to students normally carries out; and can protect student's eyesight; just solved big problem by little change; simple in structure; easy to make; and can hang district (5) in rear-projection and hang rear-projection, have good technology and economic worth, be suitable in teaching, extensively promoting the use.
In the utility model, segmental arc (2b) bending radius of described left panel (2) is 0.3～0.8mm, and the bending radius of described right panel (3) segmental arc also is 0.3～0.8mm.
As preferably, the bending radius of described left panel (2) segmental arc equates with the bending radius of right panel (3) segmental arc, and is 0.5mm.Certainly, also can adjust the bending radius of left/right panel (2,3) segmental arc in the actual manufacture process as the case may be, their bending radius is not limited to the 0.5mm in the present embodiment.
The beneficial effect that the utility model is realized:
The utility model is on the basis of traditional structure; adjusted the structure of left panel (2) and right panel (3); and they are adjusted into present planar section and segmental arc structure by original planar structure; so just can make the student who is sitting in the both sides, classroom can see content written on the blackboard clearly well; what not only can guarantee to impart knowledge to students normally carries out; and can protect student's eyesight; just solved big problem by little change; simple in structure; easy to make; and can hang district (5) in rear-projection and hang rear-projection, have good technology and economic worth, be suitable in teaching, extensively promoting the use.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 slides into the schematic diagram that 5 places, district are hung in rear-projection for the drop front 3 among Fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, 2, the utility model mainly is made of rectangle frame 1, left panel 2, right panel 3, drop front 4 and guide rail 6.Wherein rectangle frame 1 adopts existing structure, and has moulding and left and right sides moulding up and down, and this rectangle frame 1 is fixed on the body of wall when installing.
Be provided with left panel 2, right panel 3 and drop front 4 in described rectangle frame 1, wherein left panel 2 is installed in the left part of rectangle frame 1, and right panel 3 is installed in the right part of rectangle frame 1.And the zone between described left panel 2 and the right panel 3 is that district 5 is hung in rear-projection, can hang district 5 in this rear-projection during use and hang rear-projection.
As shown in Figure 1, 2, described drop front 4 is planar structure, and is positioned at the place ahead of left panel 2 and right panel 3.Guide rail (can't find out in the accompanying drawing) on the upper end of described drop front 4 and rectangle frame 1 upper frame bar is slidingly connected, and the guide rail 6 on 1 time moulding of the lower end of this drop front 4 and rectangle frame is slidingly connected, and drop front 4 can horizontally slip along the guide rail on the moulding up and down.
The right part of described left panel 2 is planar section 2a, and the left part of this left panel 2 forms segmental arc 2b after front curve.The segmental arc 2b bending radius of described left panel 2 is 0.3～0.8mm, and is preferably 0.5mm.The left part of described right panel 3 is planar section, and the right part of this right panel 3 forms segmental arc after front curve.The bending radius of described right panel 3 segmental arcs is 0.3～0.8mm also, and is preferably 0.5mm, and all the other structures of the present utility model and existing structure are identical, does not do at this and gives unnecessary details.
The above only is preferred embodiment of the present utility model; it is not restriction with the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. blackboard, comprise rectangle frame (1), in described rectangle frame (1), be provided with left panel (2), right panel (3) and drop front (4), wherein left panel (2) and right panel (3) are installed in the end of rectangle frame (1) respectively accordingly, and the zone between the left panel (2), right panel (3) is that district (5) is hung in rear-projection; Described drop front (4) is planar structure, and be positioned at the place ahead of left panel (2) and right panel (3), the upper and lower side of this drop front (4) respectively with the corresponding moulding of described rectangle frame (1) on guide rail (6) be slidingly connected, and drop front (4) can horizontally slip along guide rail (6)
It is characterized in that the right part of described left panel (2) is planar section (2a), the left part of this left panel (2) forms segmental arc (2b) after front curve; The left part of described right panel (3) is planar section, and the right part of this right panel (3) forms segmental arc after front curve.
2. blackboard according to claim 1, it is characterized in that: segmental arc (2b) bending radius of described left panel (2) is 0.3～0.8mm, and the bending radius of described right panel (3) segmental arc also is 0.3～0.8mm.
3. blackboard according to claim 1 and 2, it is characterized in that: the bending radius of described left panel (2) segmental arc equates with the bending radius of right panel (3) segmental arc, and is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100923 CN203142163U (en) | 2013-03-06 | 2013-03-06 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320100923 CN203142163U (en) | 2013-03-06 | 2013-03-06 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203142163U true CN203142163U (en) | 2013-08-21 |
Family
ID=48969715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320100923 Expired - Fee Related CN203142163U (en) | 2013-03-06 | 2013-03-06 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203142163U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139642A (en) * | 2014-08-04 | 2014-11-12 | 石家庄科达文教用品有限公司 | Embedded fixed writing board |
| CN104139644A (en) * | 2014-08-04 | 2014-11-12 | 石家庄科达文教用品有限公司 | Multimedia arc composite writing board |
| CN108847058A (en) * | 2018-07-07 | 2018-11-20 | 江西师范大学 | A kind of electronic commerce teaching device |
-
2013
- 2013-03-06 CN CN 201320100923 patent/CN203142163U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139642A (en) * | 2014-08-04 | 2014-11-12 | 石家庄科达文教用品有限公司 | Embedded fixed writing board |
| CN104139644A (en) * | 2014-08-04 | 2014-11-12 | 石家庄科达文教用品有限公司 | Multimedia arc composite writing board |
| CN104139644B (en) * | 2014-08-04 | 2016-09-07 | 石家庄科达文教用品有限公司 | Multimedia arc composite writing board |
| CN108847058A (en) * | 2018-07-07 | 2018-11-20 | 江西师范大学 | A kind of electronic commerce teaching device |
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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: 20130821 Termination date: 20210306 |