KR101633093B1 - Ascent and descent type blackboard - Google Patents

Ascent and descent type blackboard Download PDF

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Publication number
KR101633093B1
KR101633093B1 KR1020150121225A KR20150121225A KR101633093B1 KR 101633093 B1 KR101633093 B1 KR 101633093B1 KR 1020150121225 A KR1020150121225 A KR 1020150121225A KR 20150121225 A KR20150121225 A KR 20150121225A KR 101633093 B1 KR101633093 B1 KR 101633093B1
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KR
South Korea
Prior art keywords
projection
blackboard
frame
board
fixing bracket
Prior art date
Application number
KR1020150121225A
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Korean (ko)
Inventor
오용열
Original Assignee
주식회사 부경교재
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Application filed by 주식회사 부경교재 filed Critical 주식회사 부경교재
Priority to KR1020150121225A priority Critical patent/KR101633093B1/en
Application granted granted Critical
Publication of KR101633093B1 publication Critical patent/KR101633093B1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • A47B97/001—Wall mounting or suspension arrangements for blackboards or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • A47B2097/005—Monitor mounted supports or stands

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  • Drawing Aids And Blackboards (AREA)

Abstract

The present invention relates to a lifting type blackboard composed of a blackboard where a user writes and supporting plates installed in both sides of the blackboard and supporting the blackboard to be positioned at a predetermined height. The blackboard is vertically moved by a lifting means. The lifting type blackboard of the present invention is moving upward and downward, thereby providing user convenience for writing. In addition, a projection TV is easy to move to a front side of the blackboard and moves upward with the blackboard. Thus, a remarkable effect of enabling user to watch the projection TV from far away is obtained.

Description

Ascent and descent type blackboard

More particularly, the present invention relates to a blackboard as well as a boarding-and-lowering type blackboard for an audiovisual educational projection TV.

Generally, the blackboard is used for the purpose of attaching to the wall of a school or a lecture room, and the conventional blackboard is fixed on the wall. When the user is small in height, Also, if the height of the chalkboard is too low, it is difficult for the auditor to confirm the content of the writing by the auditor.

In order to overcome such a problem, a board which can be raised and lowered up and down is implemented with various options, and as a conventional technique of the board to be lifted up and down, in Patent Document No. 2003-0028643, A black board installed on a wall surface for use in education for educational purposes, comprising: a frame body provided with a central frame body at the center of the board; and a side frame body provided on both sides of the central frame body so as to be detachable from the boundary; A monitor installed in the central frame for various video education; A writing plate having a writing surface which is installed on the side frame to be wiped on both sides of the monitor; And an elevating and lowering means for elevating and lowering the central frame body up and down from the side frame body to adjust the height of the monitor.

Another conventional technique is disclosed in Japanese Patent Publication No. 1997-0010809, in which a frame body is provided at the center of a front wall surface of a lecture room or the like, a side frame body is detachably installed at both sides of the central frame body, An auxiliary education member positioned on both sides of the main board and being moved to a front surface of the main board in a state of being wrapped with a side frame and a central frame body to which the main board is attached, And a positioning means for fixing the elevation position of the main blackboard so as to coincide with the position of the auxiliary education member, wherein the positioning means comprises a supporting plate attached to the central frame body, A lever which is hingedly coupled to the support plate so as to be rotatable; and a lever which is engaged with the shaft pin of the lever, A pair of rod members extending symmetrically and extending to the position of the central frame body and a guide member for supporting the end portion of the rod member and a fixing member fixed to the side frame member at a boundary position of the central frame body, And an opening / closing position determining device for determining whether or not the door is open.

However, in the conventional techniques, the blackboard is simply raised and lowered. In the case where the audio-visual TV is mounted, the TV is fixed, and another lifting and lowering means must be installed to move the television up and down.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a blackboard capable of more effectively performing audiovisual education by allowing the blackboard to ascend and descend by the ascending and descending means, There is a purpose.

The blackboard according to the present invention is composed of a blackboard on which boards can be placed and support plates which are respectively installed on both sides of the blackboard so that the blackboard is positioned at a predetermined height from the ground, To-be-ascended or descended.

As described above, according to the present invention, it is easy for a lecturer to write a board by raising and lowering the board, and the projection TV can be moved to the front of the board easily and can be viewed from afar And the like.

Fig. 1 is an outline view of an elevating and lowering type blackboard of the present invention. Fig.
Fig. 2 is a photograph of the state of use of the board of the present invention. Fig.
Fig. 3 is a view showing the state of use of the boarding plate of the present invention. Fig.
FIG. 4 is a photograph of the projection TV using the elevating steel type blackboard according to the present invention. FIG.
5 is a detailed photograph of a portion of the board of the present invention.
6 is a photograph showing a state in which the projection TV of the ascending / descending type blackboard of the present invention is fastened to the moving frame.
7 is a photograph of a fixing bracket sissue of the projection TV of the elevating and lowering type blackboard of the present invention.
FIG. 8 is a perspective view of a fixing bracket of a projection TV of the elevating and lowering type blackboard of the present invention. FIG.
9 is a side view of the fixing bracket of the projection TV of the ascending / descending type blackboard of the present invention.
10 is a perspective view showing another embodiment of the fixing bracket of the projection TV of the ascending / descending type blackboard of the present invention.
11 is a detailed perspective view of a portion of an upper side of a fixing bracket of a projection TV of the ascending / descending type blackboard according to the present invention.
FIG. 12 is a detailed perspective view of a lower side portion according to still another embodiment of the fixing bracket of the projection TV of the elevating and lowering type blackboard of the present invention. FIG.
13 is a front schematic view showing another embodiment of a mobile frame on which the projection TV of the elevating and lowering type blackboard of the present invention is installed.
Fig. 14 is an internal schematic diagram of another embodiment of a moving frame on which a projection TV of a boarding platform of the present invention is installed; Fig.
FIG. 15 is a view showing a state of use of a moving frame on which a projection TV of a vertical mounting type blackboard of the present invention is installed according to still another embodiment. FIG.

The board of the present invention is composed of a board 100 capable of boarding and a support plate 200 mounted on both sides of the board 100 to support the boards so that they are positioned at a predetermined height from the ground And the black board 100 is lifted up and down by the lifting means 600.

Each of the support plates 200 has an inner space opened toward the blackboard 100 and an auxiliary space in which the rollers 310 are formed on any one of the inner spaces of the support plate 200 A rail 110 is mounted on the upper and lower sides of the chalkboard 100 so as to move along the longitudinal direction of the chalkboard 100 in contact with rollers 310 formed on the upper and lower surfaces of the auxiliary chalkboard 300, The auxiliary board 300 mounted on the inside of the support plate 200 can be moved to the front of the board 100 along the rail 110.

A projection TV 500 is installed inside the support plate 200 to which the auxiliary blackboard 300 is not attached and moves to the front of the blackboard 100 along the rail 110.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a boarding board of the present invention, FIG. 2 is a photograph of a boarding board of the present invention, and FIG. 3 is a view of using the boarding board of the present invention.

1 to 3, the present invention relates to a boarding-down type blackboard, and more particularly, to a boarding board 100 capable of boarding, a board 100 installed on both sides of the board 100, And a support plate 200 supporting the support plate 200 at a predetermined height from the ground.

The board (100) is supported by the support plate (200) and is vertically raised and lowered by the elevating and lowering means (600).

The elevating and lowering means 600 is a widely known means as disclosed in Korean Utility Model Registration No. 0176247, and a detailed description thereof has been omitted.

The supporting plate 200 has an inner space opened toward the blackboard 100 and an auxiliary space in which the roller 310 is formed on the upper and lower surfaces of any one of the inner spaces of the supporting plate 200 And a black board 300 is mounted.

That is, each pair of the support plates 200 is installed on both sides of the board 100, and has a hexahedron shape in which an internal space is formed. The support plate 200 is opened to pass through the board 100 toward the inside and outside.

In the upper and lower surfaces of the board 100, a rail 110 is installed along the longitudinal direction of the board 100.

The rail 110 is installed on the upper and lower surfaces of the chalkboard 100 and is installed in the longitudinal direction of the chalkboard 100. The rail 110 formed on the upper and lower surfaces of the auxiliary chalkboard 300 contacts the rails 110 ) Is installed.

Therefore, the auxiliary board 300 mounted in the support plate 200 may be moved to the front of the board 100 along the rail 110 if necessary, and used as a boarder. After use, 200), thereby maintaining an aesthetically clean environment.

Although the auxiliary blackboard 300 may be mounted in the inner space of the pair of support plates 200, the auxiliary blackboard 300 is installed only in one place of the support plate 200 in this embodiment.

4 is a photograph of the state of use of the projection TV of the ascending / descending type blackboard of the present invention.

As shown in FIG. 4, a projection TV 500 is installed inside the support plate 200 on which the auxiliary board 300 is not mounted, and the projection TV 500 moves to the front of the board 100 along the rail 110 It is possible to move the projection TV 500 to the front of the blackboard 100 in the course of audiovisual education and to easily view the blackboard 100 from afar as the blackboard 100 moves upward by the elevating and lowering means 700. [

The projection TV 500 is mounted inside the frame 400 so that the projection TV 500 can be easily moved by moving the rollers 410 Respectively.

The projection TV 500 is installed inside the support plate 200 on which the auxiliary blackboard 300 is not mounted and on the top and bottom of the projection TV 500, 310 are mounted.

5 is a detailed photograph of a part of the boarding board of the present invention.

As shown in FIG. 5, the projection TV 500 is installed in the moving frame 400, and the space portion 420 is formed in the upper and lower portions of the projection TV 500, respectively.

A cover plate 430 is installed on the entire surface of the space 420 formed below the projection TV 500 so that the length of the cover plate 430 is smaller than the width of the movable frame 400 do.

The remaining area portion allows the sliding door 440 to be mounted.

The sliding door 450 is a sliding type so that the sliding door 450 can be moved to the moving frame 400 so that the sliding door 440 can be easily slid on the lower surface of the projection TV 500 and the inner upper surface of the moving frame 400 ).

A power supply line W extending from the projection TV 500 and a plug P fastened together at the end of the power supply line are stored in the space portion 420.

 In this case, after the projection TV 500 built in the inner space of the support plate 200 is moved to the front of the blackboard 100, the sliding door 440 is slid to open the space, The stored power line W is drawn out.

By plugging the plug of the projection TV 500 into the outlet, electricity is supplied to the projection TV 500 to allow smooth audiovisual education.

When the audiovisual education is completed, the plug fastened to the receptacle is removed, the plug is stored in the space portion 420 together with the power line, the space portion 420 is closed as the sliding door 440, To the inside of the support plate (200).

Fig. 6 is a photograph showing a state in which the projection TV of the ascending / descending type blackboard of the present invention is fastened to the moving frame, Fig. 7 is a photograph of a fixing bracket of the projection TV of the ascending / descending type blackboard of the present invention, And FIG. 9 is a side view of a fixed bracket of a projection TV of the ascending / descending type blackboard of the present invention.

As shown in FIG. 6, the projection TV 500 is installed in the moving frame 400.

A horizontal frame 460 in the form of a plate is mounted between a pair of horizontal frames, and the fixing bracket 470 is fixed to the horizontal frame 460 in a direction perpendicular to the horizontal frame 460. And the projection TV 500 is fixed to the fixing bracket 470.

Particularly, in the front surface of the horizontal frame 460, a latching protrusion 461 having a space opened upward is formed in the longitudinal direction of the horizontal frame 460, and the latching protrusions 461 are vertically As shown in FIG.

The fixing bracket 470 is fixed upright on the horizontal frame 460. The fixing bracket 470 has hooks 471 on both sides of which are opened to the lower side to engage the hooks 461 of the horizontal frame 460 As shown in Fig.

The hook 471 located on the upper side is referred to as the upper hook 471-1 and the hook 471 located on the lower side is referred to as the lower hook 471-2.

Therefore, the hooks 471 of the fixing bracket 470 are caught by the latching jaws 461 of the horizontal frame 460 and are fastened to each other.

The body of the fixing bracket 470 is formed with a plurality of through holes 472 extending in the front-rear direction and spaced apart from each other by a predetermined distance in the vertical direction. The bolts are inserted through the through holes 472, 500 are fixed.

Particularly, a fastening piece 477 is protruded from the lower side of the body of the fixing bracket 470 in the protruding direction of the hook 471.

The fastening piece 477 has a triangular shape in plan view, and the fastening piece 477 and the horizontal frame 460 are fixed to each other, so that the fixing bracket 470 can be more firmly fixed.

FIG. 10 is a perspective view of another embodiment of a fixing bracket of a projection TV of the present invention, FIG. 11 is a detail perspective view of a portion of an upper side according to another embodiment of a fixing bracket of a projection TV of the present invention, Is a detailed perspective view of a portion of the lower side according to still another embodiment of the fixing bracket of the projection TV of the elevating and lowering type blackboard of the present invention.

The upper hook 471-1 and the lower hook 471-2 can not be fastened to the hook 461 of the horizontal frame 460 when the gap between the pair of horizontal frames 460 is not constant, The gap between the upper hook 471-1 and the lower hook 471 is made to be fluid and the fastening piece 477 is also mounted so as to be movable up and down the fixing bracket 470 as shown in FIG.

That is, the lower hook 471-2 is fixed to the fixing bracket 470 and the upper hook 471-1 can be moved up and down along the length of the fixing bracket 470, So that it is possible to cope with the fluidity.

A protruding piece 473 is formed on the upper surface of the fixing bracket 470 in a direction in which the hook 471 is protruded and the opposite side edges of the fixing bracket 470 in the direction in which the hook 471 is formed are connected to the rails R And a pair of upper hooks 471-1 are seated on the rails like an LM block.

A support protrusion 476-1 is formed horizontally between the pair of upper hooks 471-1. An adjustment bolt 476 having a screw thread at an end of the support protrusion is fixed to a length of the fixing bracket 470 And an adjusting nut 475 is screwed to the thread of the adjusting bolt 476. The adjusting nut 475 is screwed to the threaded portion of the adjusting bolt 476. [

The adjusting nut 475 is fastened to the fixing shaft 474, which is fixed to the lower surface of the protruding piece 473,

Accordingly, when the adjusting nut 475 is rotated, the fixing shaft 474 is fixed, and accordingly, the upper hook 471-1 is rotated according to the extent to which the adjusting bolt 476 screwed to the adjusting nut 475 is inserted It is moved up and down.

A pair of guide plates 478 are formed on both sides of the fastening piece 477 along the longitudinal direction of the fixing bracket 470 and the guide plate 478 is provided with guide plates 478 along the longitudinal direction of the guide plate 478 A guide lane groove 479 made up of a vertical groove and a plurality of horizontal grooves spaced apart from the vertical groove by a predetermined distance is formed.

On the other hand, the fastening piece 477 is separated from the fastening bracket 470, and a guide protrusion 477-1 protruding from both sides of the fastening piece 477 is inserted into the pair of guide frame grooves 479, At both ends of the guide protrusion 477-1, a stopper 477-2 is formed to prevent the guide protrusion 477-1 from coming off the guide lane groove 479. [

It is preferable that the prevention piece 477-2 is formed to have a larger area than the vertical grooves and the horizontal grooves so as not to come off the guide groove 479. [

Therefore, the fastening piece 477 can be freely moved to a desired position while being fastened to the guide rail groove 479.

FIG. 13 is a front schematic view of a moving frame on which a projection TV of the elevating and lowering type blackboard according to the present invention is installed, FIG. 14 is a front view of another embodiment of the moving frame on which a projection TV of the elevating- 15 is an explanatory view illustrating another embodiment of a mobile frame on which a projection TV of a boarding platform of the present invention is installed.

13 to 15, the moving frame 400 includes a horizontal frame 400-1 and a vertical frame 400-2, and the vertical frame 400- 2 and a pair of intermediate frames 400-3 in parallel with each other.

At this time, a space portion 420 is formed between the intermediate frame 400-3 and the lower horizontal frame 400-1 where the projection TV 500 is installed. In the space portion 420, The power line W and the plug P of the TV 500 can be stored.

However, since the power line and the plug stored in the space 420 may be twisted when stored, it is necessary to keep the power line without being twisted.

For this purpose, a vertical diaphragm 480 is mounted so as to cross the intermediate frame 400-3 and the lower horizontal frame 400-1. The diaphragm 480 is provided with a through hole (481).

The through hole 481 is formed in a hollow body with an inner hollow hole, and the outer side thereof is inserted with a compression ring 481-1 of an elastic member having a tapered surface inclined from one end to the other end .

Therefore, if the power line W is inserted into the hollow hole of the compression ring 481-1 and one end of the compression ring 481-1 having a small diameter is inserted into the through hole 481 to be forcedly inserted, 481-1) fix the power line while tightening the power line.

In addition, a plurality of holes are formed in the partition plate 480, and a ring-shaped elastic material packing 482-1 is attached to the holes so that chucks or marking pens can be stored in the packing 482-1 .

Therefore, even when the writing instrument, which is likely to be broken like chalk, is mounted, it is fixed by the packing 482-1 so that even a wobble can be easily attached to the hole without breaking.

The plurality of holes are indicated by the writing implement insertion holes 482.

A plurality of diaphragm grooves A are formed on the lower surface of the intermediate frame 400-3 and the upper surface of the lower transverse frame 400-1 at regular intervals.

Accordingly, the position of the diaphragm 480 can be adjusted according to the object stored in the space portion 420.

15, when the sliding door 440 is closed as shown in FIG. 15 by mounting the hinged door 440-1 mounted on the lower end of the sliding door 440, the hinged door 440 -1) so that the inside of the power line can not be seen.

In addition, the cover plate 430 has a hinge H mounted on an upper end thereof and is fastened to the intermediate frame 400-3 so that it can function as a door.

A handle B is formed on the cover plate 430 and the sliding door 440, respectively, so that the cover plate and the sliding door can be conveniently opened and closed.

As described above, according to the present invention, it is easy for a lecturer to write a board by raising and lowering the board, and the projection TV can be moved to the front of the board easily and can be viewed from afar And the like.

100. Board 110. Rail
200. Support plate
300. Secondary board 310. Rollers
400. Moving frame 400-1. Horizontal frame 400-2. Vertical frame
400-3. Intermediate frame 410. roller 420. space portion
430. Cover plate 440. Sliding door 450. Sliding rail
460. Horizontal frame 461. Jaw 470. Fixing bracket
471. Hooks 471-1. Upper hook 471-2. Lower hook
472. Through hole 473. Protrusion 474. Fixed shaft
475. Adjusting nut 476. Adjusting bolt 476-1. Support projection
477. Conclusion 477-1. Guide protrusion 477-2. Prevention
478. Guide plate 479. Guide lane groove 480. Diaphragm
481. Through hole 481-1. Compression ring 482. Writing hole insertion hole
482-1. packing
500. projection TV
600. Up / down means
A. Diaphragm groove B. Handle H. Hinge
P. Plug R. Rail W. Power line

Claims (3)

And a support plate 200 installed on both sides of the board 100 to support the board 100 at a predetermined height from the ground. Descending means 600 are vertically raised and lowered,
Each of the support plates 200 has an inner space opened toward the blackboard 100. An inner space of the support plate 200 has a roller 310 formed on the upper and lower surfaces thereof, A rail 110 is installed on the upper and lower sides of the board 100 so as to be able to move in contact with rollers 310 formed on the upper and lower surfaces of the auxiliary board 300 along the longitudinal direction of the board The auxiliary chalkboard 300 mounted on the inside of the supporting plate 200 can move to the front of the chalkboard 100 along the rail 110,
A projection TV 500 is installed inside the support plate 200 on which the auxiliary blackboard 300 is not mounted and is moved to the front of the blackboard 100 along the rail 110,
A space portion 420 is formed on the upper portion and the lower portion of the projection TV 500 and a cover plate 430 is provided on the entire surface of the space portion 420 formed at the lower portion of the projection TV 500, The length of the cover plate 430 is set to be smaller than the inner width of the movable frame 400 and the remaining area of the cover plate 430 is used to mount the sliding door 440,
The sliding door 450 is a sliding type so that the sliding door 450 can be moved to the moving frame 400 so that the sliding door 440 can be easily slid on the lower surface of the projection TV 500 and the inner upper surface of the moving frame 400 In the width direction,
The power supply line W extended from the projection TV 500 and the plug P coupled together at the end of the power supply line are stored in the space portion 420 so that electricity is supplied to the projection TV 500, Education,
When the audiovisual education is completed, the plug fastened to the receptacle is removed, the plug is stored in the space portion 420 together with the power line, the space portion 420 is closed as the sliding door 440, To the inside of the support plate 200,
The moving frame 400 is a rectangular frame having a horizontal frame and a vertical frame. The horizontal frame 460 is mounted between the pair of horizontal frames. The horizontal frame 460 is orthogonal to the horizontal frame 460, And the projection TV 500 is fixed to the fixing bracket 470,
A latching protrusion 461 is formed in the front of the horizontal frame 460 in the longitudinal direction of the horizontal frame 460. The latching protrusions 461 extend in the vertical direction And are spaced apart from each other by a predetermined distance,
The fixing bracket 470 is installed upright on the horizontal frame 460. The fixing bracket 470 has hooks 471 having openings on both sides of the fixing bracket 470 to be engaged with the hooks 461 of the horizontal frame 460, As shown in Fig.
The hooks 471 of the fixing bracket 470 are caught by the latching protrusions 461 of the horizontal frame 460 and are fastened to each other and the body of the fixing bracket 470 is provided with a plurality of through holes 472 And the projection TV 500 is fixed by inserting the bolts through the through-holes 472. The height of the projecting plate 500 is set to be a predetermined distance from the vertical direction.
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KR1020150121225A 2015-08-27 2015-08-27 Ascent and descent type blackboard KR101633093B1 (en)

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KR1020150121225A KR101633093B1 (en) 2015-08-27 2015-08-27 Ascent and descent type blackboard

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Application Number Priority Date Filing Date Title
KR1020150121225A KR101633093B1 (en) 2015-08-27 2015-08-27 Ascent and descent type blackboard

Publications (1)

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KR101633093B1 true KR101633093B1 (en) 2016-07-01

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KR1020150121225A KR101633093B1 (en) 2015-08-27 2015-08-27 Ascent and descent type blackboard

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110731635A (en) * 2019-10-18 2020-01-31 安徽文香信息技术有限公司 Wisdom blackboard mounting structure and subassembly thereof
KR20200142196A (en) 2019-06-12 2020-12-22 이철희 Whiteboard with increased assembly structure
KR102339994B1 (en) * 2021-11-05 2021-12-16 딥스원테크(주) A board structure where a dislplasy device is installed

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030028643A (en) * 2001-09-25 2003-04-10 이철규 A blackboard for broadcast education
KR200359436Y1 (en) * 2004-05-19 2004-08-21 최진관 Intergrated-type Multipurpose Board
KR101504741B1 (en) * 2013-09-02 2015-03-20 장창호 The TV equipped with slide-positioning device of a blackboard

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030028643A (en) * 2001-09-25 2003-04-10 이철규 A blackboard for broadcast education
KR200359436Y1 (en) * 2004-05-19 2004-08-21 최진관 Intergrated-type Multipurpose Board
KR101504741B1 (en) * 2013-09-02 2015-03-20 장창호 The TV equipped with slide-positioning device of a blackboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200142196A (en) 2019-06-12 2020-12-22 이철희 Whiteboard with increased assembly structure
CN110731635A (en) * 2019-10-18 2020-01-31 安徽文香信息技术有限公司 Wisdom blackboard mounting structure and subassembly thereof
KR102339994B1 (en) * 2021-11-05 2021-12-16 딥스원테크(주) A board structure where a dislplasy device is installed

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