CN205326588U - Blackboard preventing reflecting device with adjustable - Google Patents
Blackboard preventing reflecting device with adjustable Download PDFInfo
- Publication number
- CN205326588U CN205326588U CN201521017519.7U CN201521017519U CN205326588U CN 205326588 U CN205326588 U CN 205326588U CN 201521017519 U CN201521017519 U CN 201521017519U CN 205326588 U CN205326588 U CN 205326588U
- Authority
- CN
- China
- Prior art keywords
- light
- paper
- blackboard
- trocar sheath
- inner sleeve
- 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 relates to an educational aid, in particular to blackboard preventing reflecting device with adjustable. Main including having the looks isostructure, the adjusting device of symmetry installation with be used for the paper that is in the light of shading. Wherein adjusting device includes fixed part, interior sleeve pipe, outer tube, rotation axis. Fixed part has the binding hole, and accessible binding hole is fixed whole device and is leaned on sunshine one side at the blackboard, interior sleeve pipe and outer tube component telescoping device, interior outer tube all have the slit of different width, and interior sleeve pipe outermost end has the draw knob, and interior sleeve pipe can draw through the draw knob in the outer tube and push away with this shading area of adjusting the paper that is in the light promptly. The outer tube can be rotatory with this adjustment shading angle with the rotation axis cooperation. Be in the light that the slit blocks for the paper on the interior sleeve pipe, the paper that is in the light on the outer tube can directly glue on it. The utility model discloses low cost, convenient and practical can reach the best preventing reflecting effect with the shading area that the push -and -pull changes the gear shifting machine -glazed paper through rotatory angle of adjustment and cooperation, improves the teaching efficiency.
Description
Technical field
This utility model relates to a kind of educational aid, particularly to a kind of adjustable blackboard anti-light reflection device。
Background technology
Upper class hour, due to the impact of the material of blackboard and light, the classmate's association on both sides, classroom does not see the word on blackboard because of the reflection of light, affects teaching efficiency。Having people to devise the blackboard of some special reflection-proofs for solving the problems referred to above, so not only repacking cost is high, but also needs to change existing blackboard, and cost is big, wastes resource, is unfavorable for popularizing。Accordingly, it would be desirable under the premise being changed without blackboard, utilize existing condition and space, classroom, design is a kind of cheap, and convenient and practical adjustable blackboard anti-light reflection device again reaches same reflection-proof effect, improves teaching efficiency。
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of adjustable blackboard anti-light reflection device, it is avoided that replacing blackboard, save cost, only need to be installed in blackboard side, and can not interfere with teacher lean to one side the subject of a lecture premise under, the area that is in the light to change light-shielding sheet by adjusting angle cooperation, reaches best reflection-proof effect, improves teaching efficiency。And can be gone to when not in use is attached on metope, too much space, classroom will not be taken。
This utility model is achieved by the following scheme:
A kind of adjustable blackboard anti-light reflection device, mainly includes having identical structure, and what be symmetrically installed regulates device and the paper that is in the light for shading。Wherein regulate device and include fixing parts, inner sleeve, trocar sheath, rotating shaft。Fixing parts there is binding hole, by binding hole, whole device can be fixed on blackboard and lean on the side of sunlight；Inner sleeve and trocar sheath composition retractor device, described trocar sheath internal diameter is equal with described inner sleeve external diameter, having the slit of different in width on internal and external casing, inner sleeve outermost end has pull-button, and namely inner sleeve can be undertaken drawing by pull-button in trocar sheath and pushes away the shading-area adjusting the paper that is in the light with this。Trocar sheath can coordinate rotation with this to adjust shading angle with rotating shaft。The paper slit that is in the light on inner sleeve blocks, and the paper that is in the light on trocar sheath can be adhered directly to above。
Further, described adjustment device material is rigid plastics。
Further, described trocar sheath is connected by axis hole with described fixing parts。
The beneficial effects of the utility model are: a kind of adjustable blackboard anti-light reflection device of this utility model, cheap, convenient and practical, it is avoided that replacing blackboard, saves cost, only need to be installed in blackboard side, and can not interfere with teacher lean to one side the subject of a lecture premise under, the area that is in the light to change light-shielding sheet by adjusting angle cooperation, reaches best reflection-proof effect, improves teaching efficiency。And when not using, can be gone to and be attached on metope, too much space, classroom will not be taken。
Accompanying drawing explanation
Below in conjunction with accompanying drawing, this utility model is further described。
Accompanying drawing 1 is structural representation of the present utility model。
In figure: A, B. regulate device 1. and fix parts 2. binding hole 3. rotating shaft 4. trocar sheath 5. inner sleeve 6. pull-button 7. and be in the light paper 8. inner sleeve slit 9. trocar sheath slit。
Detailed description of the invention
Accompanying drawing 1 is a kind of specific embodiment of the present utility model。Mainly including having identical structure, what be symmetrically installed regulates device A, B and the paper 7 that is in the light for shading。Wherein regulate device A, B and include fixing parts 1, inner sleeve 5, trocar sheath 4, rotating shaft 3。Fixing parts 1 there is binding hole 2, by binding hole 2, whole device can be fixed on blackboard side；Inner sleeve 4 and trocar sheath 5 form retractor device, and internal and external casing has the slit 8,9 of different in width, and inner sleeve 5 outermost end has pull-button 6, and namely inner sleeve 5 can be undertaken drawing by pull-button 6 in trocar sheath 4 and pushes away the shading-area adjusting the paper 7 that is in the light with this。Trocar sheath 4 can coordinate rotation with this to adjust shading angle with rotating shaft。The paper 7 that is in the light on inner sleeve 5 blocks with slit, and the paper 7 that is in the light on trocar sheath 4 can be adhered directly to above。It is characterized in that described adjustment device A, B material is rigid plastics；Described adjustment device A, B mounting distance and blackboard are with wide；Described trocar sheath 4 internal diameter is equal with described inner sleeve 5 external diameter；Described trocar sheath 4 is connected by axis hole with described fixing parts 1。Additionally: can also only use binding position, one, upper end to fix, rely on B internal and external casing weight to ensure its vertical efficiency。
Use a kind of adjustable blackboard anti-light reflection device of this utility model, first it is fixed on blackboard side by the width of blackboard by the binding hole 2 of fixing parts 1 by regulating device A, B, then the paper 7 that is in the light of suitable size is selected according to the spacing regulating device A, B, by the paper 7 inner sleeve slit 9 that is in the light and on the viscous outer wall with trocar sheath 4。So can leaning to one side to teach the position stood and light to the degree of illumination of blackboard and angle according to teacher, make trocar sheath 4 rotate to suitable angle around rotating shaft 3, inner sleeve 5 is driven and rotates together simultaneously。And pulling out or advance inner sleeve 5 to change the shading-area of the paper 7 that is in the light by pull-button 6, trocar sheath slit 9 exists makes drawing to push away and not hindering of inner sleeve 5, such that it is able to reach the reflection-proof effect of the best。Can go to its its when not using and be attached on metope。Therefore the beneficial effects of the utility model are: a kind of adjustable blackboard anti-light reflection device of this utility model, cheap, convenient and practical, it is avoided that replacing blackboard, saves cost, only need to be installed in blackboard side, and can not interfere with teacher lean to one side the subject of a lecture premise under, the area that is in the light to change light-shielding sheet by adjusting angle cooperation, reaches best reflection-proof effect, improves teaching efficiency。And when not using, gone to and be attached on metope, too much space, classroom will not be taken。
Claims (3)
1. an adjustable blackboard anti-light reflection device, it is characterized in that mainly including that there is identical structure, what be symmetrically installed regulates device and the paper that is in the light for shading, wherein regulate device and include fixing parts, inner sleeve, trocar sheath, rotating shaft, fixing parts there is binding hole, by binding hole, whole device can be fixed on blackboard side, inner sleeve and trocar sheath composition retractor device, trocar sheath internal diameter is equal with described inner sleeve external diameter, internal and external casing has the slit of different in width, inner sleeve outermost end has pull-button, namely inner sleeve can be undertaken drawing by pull-button in trocar sheath and pushes away the shading-area adjusting the paper that is in the light with this, trocar sheath can coordinate rotation with this to adjust shading angle with rotating shaft, the paper slit that is in the light on inner sleeve blocks, the paper that is in the light on trocar sheath is adhered directly to above。
2. the adjustable blackboard anti-light reflection device of one according to claim 1, it is characterised in that described adjustment device material is rigid plastics。
3. the adjustable blackboard anti-light reflection device of one according to claim 1, it is characterised in that described trocar sheath is connected by axis hole with described fixing parts。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521017519.7U CN205326588U (en) | 2015-12-10 | 2015-12-10 | Blackboard preventing reflecting device with adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521017519.7U CN205326588U (en) | 2015-12-10 | 2015-12-10 | Blackboard preventing reflecting device with adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205326588U true CN205326588U (en) | 2016-06-22 |
Family
ID=56211546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521017519.7U Expired - Fee Related CN205326588U (en) | 2015-12-10 | 2015-12-10 | Blackboard preventing reflecting device with adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205326588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674062A (en) * | 2018-05-02 | 2018-10-19 | 宋明刚 | A kind of reflection prevention blackboard |
-
2015
- 2015-12-10 CN CN201521017519.7U patent/CN205326588U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674062A (en) * | 2018-05-02 | 2018-10-19 | 宋明刚 | A kind of reflection prevention blackboard |
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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: 20160622 Termination date: 20161210 |