KR20090081455A - A Display Unite Angle Control Device For Multimedia Table - Google Patents

Abstract

A display angle control device for multimedia lecture alternative is provided to form additionally an angle control folding lump between the display angle control device, thereby preventing the excessive withdrawal of a display or the leading-in of a display installation frame to the inside. A guide rail(60) guides an angle control folding lump(20) which is installed between an angle control device(16) which is parallelly formed in the rear of a display mounting support(15). The angle control folding lump is respectively mounted in the inside of the inner bottom surface of a display installation frame(12) and the inside of the guide rail. The angle control folding lump controls an installation angle by being folded and opened.

Description

A Display Unite Angle Control Device For Multimedia Table}

The present invention relates to a display device for adjusting the angle of a multimedia lecture table formed to easily adjust the angle of a display installed on an upper surface of a lecture operating body mounted on a multimedia lecture table equipped with various multimedia devices such as a video device and a computer system. .

To explain this in more detail, the lecture operating base is integrally installed on the upper side of the main body cabinet in which various multimedia equipments are installed inside, or provided with the main operating base irrespective of the main body cabinet, and formed on the upper plate of the main operation basic body. The display installation room supports the bottom of the bottom of the display, and at the same time, the display mount with integrally formed rotating shafts on both sides, and the angle adjusting device integrated on both sides of the rear surface so as to adjust the rotation and angle of the display and the display mount around the rotating shaft. It is formed by mounting the display mounting frame formed by a guide rail between the angle adjusting device formed to correspond to each other on the back of the display mounting frame by mandrel rollers on the inner bottom surface of the display mounting frame therein Meeting to be sent to Shanghai And a locking part fixed to the bottom of the display mounting frame by a fastening screw and fixed to the third shaft pin of the rotating part and loaded between the teeth on the vertical teeth of the fixing part to adjust the installation angle. The purpose of the present invention is to provide a display angle adjusting device for a multimedia lecture table equipped with an angle adjusting folding bundle.

Schools, private academies, or companies generally teach by writing on the blackboard or whiteboard using chalk or board markers. Currently, most schools, private academies, or companies teach in the same way as above.

As described above, when lectures are written using a blackboard or whiteboard, the lecturer lectures while looking at the blackboard or whiteboard. Therefore, the lecturers are unable to make eye contact with the listeners who listen to it. Of course, the problem of failing to effectively deliver the contents of the lecture and repeated erases in the middle of the writing process can cause health problems such as chalk powder flying into the air and entering the bronchi of lecturers and those who listen to it.

In order to solve such a problem, a lecture table having a multimedia function has been proposed to effectively deliver a lecture or briefing in a classroom or a meeting room of a school or a company.

As described above with reference to the accompanying drawings for the lecture table having a multimedia function with reference to Figures 1 and 2, the stand-type multimedia lecture table 1-1 illustrated in Figure 1 is a front door (2) -1) shows that the lecture operating base 3 is installed on the upper side of the main cabinet (2) provided, and the portable multimedia lecture table (1-2) illustrated in FIG. 2 is the lecture operating base (3) only. It has been shown.

The stand-type multimedia lecture table 1-1 illustrated in FIG. 1 has a handle for facilitating transport on both sides of a main body cabinet 2 formed of a rectangular parallelepiped and heat generated from various multimedia equipment mounted therein. Air distribution hole is installed and formed (through) for discharging the product to the outside, the moving wheel and the base is installed on the bottom of the support plate, the front door (2-1) is installed on the front end hinged (specific volume) Not shown).

Inside the main body cabinet 2, various multimedia equipments such as VTRs and amplifiers are directly installed (mounted) or mounted on a shelf (mounted).

As illustrated in FIG. 1, the teaching operation base body 3, which is installed on the upper side of the main cabinet 2, or is formed solely as illustrated in FIG. 2, has an upper plate 5 inclined, and an upper plate. (5) includes a display panel for displaying the contents of lectures, a control panel for controlling various equipment, etc., a microphone and a built-in (or mounted) computer and CD / disc player (CD-ROM A mouse for controlling FDD, HDD, USB port, etc.) is installed.

The upper surface of the display 11 is opened and closed by an upper cover 6, and a keyboard storage room 7, which is used as a keyboard support, is formed at the bottom of the front surface of the lecture management basic body 3 so as to be stored and withdrawn. On one side (the opposite side of the cover) is formed to support the auxiliary support (8-1) is provided with an auxiliary support (8) to hold the teaching material.

As such, the display device installed in the lecture management base 3 of the stand-type multimedia lecture table 1-1 illustrated in FIG. 1 or the portable multimedia lecture table 1-2 illustrated in FIG. As the lecturer (teacher, professor, instructor) is standing, the angle between the lecturer's eyes and the display device is almost the same so that the screen can be easily seen, but the lecturer is sitting or the lecturer is short. In this case, the angle between the lecturer's eyes and the display device is inconsistent, and thus the screen cannot be easily viewed.

To solve this problem, I proposed a patent application No. 10-06-1291310, "Display angle adjusting device for multimedia lecture table".

The patent application No. 10-06-1291310, "Display angle adjusting device for multimedia lecture table" will be briefly described with reference to FIG. 2 as an example. The lecture management basic body is located on the upper side of the main cabinet 2 in which various multimedia equipment is installed therein. (3) integrally provided or provided with a lecture operating base (3) irrespective of the main body cabinet (2), the display (11) is provided on the upper plate of the lecture operating base (3), the display ( 11) the lower end of the mandrel is installed by the rotating shaft 19, and rotates about the rotating shaft 19 by the angle adjusting device 16 formed of the rod 18-1 and the absorber 18-2, and the arbitrary angle The display 11 is formed in a box shape to accommodate the display 11 inside, and a display mounting frame 12 having a wiring hole 13 is formed at one side thereof. Can be adjusted randomly This allows the lecturer to easily see the screen regardless of whether the lecturer is standing or sitting or who is tall or small.

However, the above-described “display angle adjusting device for multimedia lecture desk” is more drawn out regardless of the user's intention in the process of drawing out the display and adjusting the installation angle, or malfunction of the angle adjusting device (ie, inside the absorber). If the rod is drawn in), the display is drawn into the inside of the display installation frame.

The present invention is to provide an improved display angle adjusting device for multimedia lectures to solve the above problems.

The present invention, the display installation room formed on the upper plate of the lecture operating base body, provided with a lecture operation base body integrally installed on the upper side of the main body cabinet in which the various multimedia equipment is installed or irrespective of the main body cabinet, Support the bottom of the bottom of the display and at the same time the display mounting unit formed on both sides of the rotating shaft integrally and the angle adjustment device formed integrally on both sides of the back so as to adjust the rotation and angle of the display and the display mounting around the rotation axis In the mounting of the display mounting frame, a guide rail for guiding the angular adjustment folded bundle installed in the mandrel is formed between the angle adjusting device formed side by side on the back of the display mounting stand, the inner bottom surface of the display mounting frame And inside the guide rail Complex to provide a folded-substituted multimedia, it characterized in that the formation, including the recline folded bundle so as to adjust the installation angle of the river and the deployment angle of the display control device haryeoneunde it is an object.

Another object of the present invention, by further forming an angle adjusting fold between the angle adjusting device formed to correspond to each other on the back of the display mount, and with the intention of the user in the process of adjusting the installation angle by drawing the display in the prior art It is an object of the present invention to provide a display angle adjusting device for a multimedia lecture table, which can be pulled out more or can be reliably supported and prevented the end of the display, such as drawing into the inside of the display installation frame.

Still another object of the present invention is to divide the angle-adjusting bundling into the rotating portion and the fixed portion formed in the rotating portion is formed in the locking portion that is maintained in a horizontal state by the elastic member, the one side of the fixed portion By forming a vertical tooth piece integrally formed with teeth, when the pivot is rotated up and down, the vertical surface formed on the front surface of the stone piece is inserted between the teeth of the vertical catches protruding upwards between the teeth of the vertical catches. It is connected to the lower end (or the tip) of the stone piece so that the other end of the tooth is caught so that it can be rotated up (or down), but it cannot be rotated down (or up), keeping the display at a constant angle. At the same time, it aims to provide a display angle adjusting device for a multimedia lecture table so that it can be accurately supported.

The above and other objects of the present invention,

The lecture operation main body 3 is integrally installed on the upper side of the main body cabinet 2 in which various multimedia equipments are installed, or the lecture operation main body 3 is provided irrespective of the main body cabinet 2, The display mounting chamber 15 formed on the upper plate 5 of the main body 3 supports the lower end of the bottom surface of the display 11 and at the same time, the display mounting stand 15 having the rotation shaft 18-1 integrally formed on both sides thereof. The display mounting frame 12 having the angle adjusting device 16 integrally formed on both sides of the rear surface so as to adjust the rotation and angle of the display 11 and the display mounting stand 15 around the rotating shaft 18-1. In what fitted

A guide rail (60) for guiding the angle-adjusting fold bundle (20) embedded in a mandrel between the angle adjusting devices (16) formed side by side on the rear surface of the display mounting table (15);

It is mounted to the inner bottom surface of the display mounting frame 12 and the inside of the guide rail 60, respectively, the angle adjustment folding bundle (20) to adjust the installation angle while folding and deploying; Is achieved by the display angle adjusting device 10 for the multimedia lecture table.

The present invention, by further forming the angle adjustment folds between the angle adjustment device formed to correspond to each other on the back of the display mount, the conventional display is more irrespective of the user's intention in the process of adjusting the installation angle. The display can be pulled out or in use so that the closed end of the inlet and the like can be firmly supported and securely supported by the inside of the display installation frame. By means of forming a ball catching portion to maintain a horizontal state by means, and on one side of the fixing portion to form a vertical tooth piece formed with a plurality of teeth integrally, between the teeth of the vertical teeth protruding upward when the pivot is rotated up and down As the stone piece formed at the tip of one side of the ball catching mouth is charged, the vertical surface formed at the front of the stone piece It is connected to the slope, and the lower end (or tip) of the stone piece is allowed to take the tip of the other tooth so that it can be rotated up (or down), but it cannot be rotated down (or up) to maintain the display at a constant angle. It can be.

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

Figures 1a to 4b shows a specific implementation of the display device for adjusting the angle of the multimedia lecture 10 according to the present invention, Figures 1a and 1b respectively show the display device for adjusting the angle of the multimedia lecture 10 according to the present invention Another perspective view showing the state installed in the multimedia lecture table (1-1) (1-2), Figure 2 is equipped with the angle adjusting folding bundle 20 to the display device for adjusting the angle of the multimedia lecture table 10 according to the present invention. 3a and 3b is an exploded perspective view and a combined perspective view showing an enlarged main portion of the angle adjustment folding bundle 20 in the multimedia lecture table display angle adjusting device 10 according to the present invention, FIG. 4a and 4b is a cross-sectional view and an operation relationship explanatory view of the angle adjusting folding bundle 20 mounted on the display device for adjusting the angle of multimedia lecture 10 according to the present invention.

Display angle adjusting device for multimedia lecture 10 according to the present invention was formed as follows.

Display angle adjusting device 10 for the multimedia lecture table according to the present invention was largely formed as a display mounting frame 12 and the display mounting frame 15 and the angle adjusting device 16 and the angle adjustment folding bundle (20).

The display mounting frame 12 is embedded in the display mounting chamber 9 formed in the center of the stand-type multimedia lecture table (1-1) or the portable multimedia lecture table (1-2), and the overall shape is upward. In the form of an open box, a space portion 12-1 was formed to allow a finger to be inserted into one side of the vertical side, and a wiring hole 13 formed of an opening to accommodate a cable or an electric wire was formed at one side of the bottom. In addition, one side of the horizontal side further formed a pedestal 14 to limit the storage by supporting one end of the display 11 when the display 11 was accommodated.

In addition, the other side formed with the pedestal 14 is formed at the bottom of the bottom of the display 11 to form a display mount 15 for supporting the display 11 in one piece, the display mount 15 On the left and right side of the lower end of the rotary shaft 19 was formed integrally, the display mount 15 was formed of steel or synthetic resin.

The display mount 15 was formed by bending the bottom forward to support the bottom and bottom of the display 11, the rotating shaft 19 is installed on both sides of the bottom support of the display mount 15 ) Were formed integrally with each other to form the display mounting unit 15 so as to be rotatable about an axis.

On the rear surface of the display mounting stand 15, the angle adjusting device 16 was formed to correspond to each other so as to freely adjust the angle of the display 11, which was formed as shown in FIG.

On the rear surface of the display mounting stand 15 and the bottom surface of the display mounting frame 12, an N-shaped upper hook piece 17-1 and a lower hook piece 17-2 were mounted, and the upper hook piece ( A rivet (not specifically shown) between the rod 18-1 and the absorber 18-2 in which the rod 18-1 is pulled in and drawn out from the inside between the 17-1) and the lower hook piece 17-2, respectively. By fastening and integrally mounting, the display 11 can be used while the lecturer adjusts to the use conditions.

Between the angle adjustment device 16 formed in parallel with each other formed an angle adjustment folding bundle 20 that can accurately adjust the angle of the display 11 while being folded and developed, as shown in Figures 3a to 3b As formed.

The angle-adjusting fold bundle 20, the rotating portion 30 which is transported to the inside of the guide rail 60 while the roller 36 is sliding inward; A bullet that is held by the third shaft pin 35 inside the pivoting part 30 and loaded between teeth 53-1 formed on the vertical teeth 53 of the fixing part 50 to adjust the installation angle. A catch 40; The mounting plate 51 is fixed and mounted on the inner bottom surface of the display mounting frame 12 by the fastening screw 65, and the fixing part 50 having the vertical tooth piece 53 formed on the upper end side of the mounting plate 51. Formed large.

The pivoting portion 30 forms an installation frame 31 in which a projection piece 31-3 protruding downward from one side of the horizontal piece 31-1 and the vertical piece 31-2 is integrally formed. 31-2) and the third distribution hole 32-3 and the first distribution hole 32-1, the second distribution hole 32-2, and the upper and lower deviations on the outer surface of the protruding piece 31-3. Four distribution holes (32-4) were formed to communicate.

In addition, the roller 37 and the elastic member are integrally formed on the rear and left and right sides of the first and the third through holes 32-1, 32-3 and the fourth through holes 32-4, respectively. The vertical latch 53 of the fixing portion 50 to which the ball catching hole 40 and the gap retaining bush 56 connected to the left and right are positioned on the axis line, respectively, and the first distribution hole 32- 1) annular grooves 33-3 and 34-3 on one side of the second distribution hole 32-2 and the third distribution hole 32-3 and the fourth distribution hole 32-4. A state in which the first shaft pins 33, the second shaft pins 34, and the third shaft pins 35 and the fourth shaft pins 36, in which the 35-3) and 36-3 are formed, are sequentially loaded to protrude to the other side. In the annular groove (33-3) (34-3) (35-3) (36-3) is to be fixed by mounting the snap ring 38, respectively.

A guide rail 60 is installed on the rear surface of the display mounting table 15 to guide the pivoting portion 30 of the angle adjusting folding bundle 20.

Both ends of the horizontal plane 61 were formed with a vertical piece 62 bent downward, and at the lower end of the vertical piece 62 was bent inwardly by a predetermined width to form a bent piece 63 so that the overall shape was a rectangular box. Formed.

The fixing part 50, which is fixed to the inner bottom surface of the display installation frame 12 and protruded, is integrally coupled with the pivoting part 30, was formed as follows.

A rectangular fastening plate 51 was formed to form a first fastening hole 52-1 and a second fastening hole 52-2 at the rear and front of the same line, respectively, and an upper end of the mounting plate 51. On one side, the installation hole 53 is connected to the outer surface protruding vertically, the elongated surface 53-1 is formed on the front surface, and the vertical teeth piece 53 formed with a plurality of teeth 55 at equal intervals is integrally formed at the top. It was.

A ball catching mechanism 40 for intermittently folding and developing while entering between the teeth 45 of the vertical tooth piece 43 by the rotation part 30 which is integrally held by the third end bar 34-3 and is axially rotated. Was formed as follows.

A trapezoidal shape is formed with a catching ball body 41 formed with a coupling hole (41-1) penetrating through the center of the outer surface, and formed on the front surface of the catching ball body 41 becomes narrower to form a projection (42) horizontally However, by forming a vertical surface (42-1) on the front surface of the stone piece 42 to be vertically connected to the inclined surface of the teeth (55), one side of the elastic member is to be loaded on the rear of the latching body (41) The hook piece 52 formed with the installation hole 53 on the outer surface was formed integrally.

Inside the pivoting portion 30 is formed a hook catching portion 40 which is maintained in a horizontal state by the bullet member and a vertical tooth piece 53 in which a plurality of teeth 55 are integrally formed on one side of the fixing part 50. 4A, the tip of one side of the shot catching hole 40 is disposed between the teeth 55 of the vertical tooth piece 53 protruding upward when the rotating part 30 is axially rotated up and down. The vertical surface 42-1 formed on the front surface of the stone piece 42 is connected to the inclined surface of the tooth 55 while the stone piece 42 formed in the upper surface of the stone piece 42 is inserted into another tooth 55 as the lower end (or tip) of the stone piece 42. ) So that the top end (or bottom side) can be rotated but the bottom side (or top side) can't be rotated so that the display 11 can be maintained at a constant angle and can be supported accurately. .

In addition, the elastic member which is attached to the mounting hole (43-1) of the hook piece (43) and the shaft bar (35-1) of the third shaft pin (35) to maintain the horizontal state of the bullet catching holes 40 at all times The coil spring 45 was formed.

Hereinafter, the operating relationship of the display device for adjusting the angle of multimedia lecture table 10 according to the present invention.

Display angle adjusting device 10 for multimedia lecture table according to the present invention is a stand-up multimedia lecture table (1-1) as illustrated in Figure 1a or a portable multimedia lecture table (1-2) as illustrated in Figure 1b It is installed in the display installation room 9 of each of the lecture operating body (3) forming a.

When the display 11 is loaded inside the display installation chamber 9, the upper surface of the display 11 is kept in a state coincided with the upper plate 5 of the lecture operating base 3, and thus the upper cover 6 is opened. It can be opened and closed easily.

When the upper cover 9 is pulled out to one side to open the lecture, the display 11 installed by the multimedia lecture display display angle adjusting device 10 according to the present invention appears, and in such a state as in the conventional method. If you give a lecture while sitting in a low chair (not shown in detail) during the lecture, or a short person gives a lecture, the angle between the eyes and the display 11 will be different. The image is difficult to see, at this time it is to adjust the angle of the display 11 by using the display device for adjusting the angle of multimedia lecture 10 according to the present invention.

In the state in which the display 11 is mounted and fixed to the display mounting stand 15, the angle adjusting device 16 is formed in parallel with the rear surface of the display mounting stand 15, and the side angle adjusting device 16 is arranged side by side. Between the) guide rails (60) to form a pivoting bundle (20) loaded with the rotating part (30).

The display 11 may be drawn out in the space portion 12-1 formed on one side of the upper surface of the display mounting frame 12 or in the space portion (not shown) formed on one side of the display installation chamber 9. When the finger is inserted and pulled upwards while the side of the display 11 is lightly gripped, the display mount 15 fixed to the bottom of the display 11 together with the display 11 is rotated upward with respect to the rotation axis 19. Done.

In more detail, when rotating about the rotation axis 19 of the display mounting unit 15, the display 11 mounted on the display mounting unit 15 is also pulled out together, and in the process of rotating as described above, The angle adjusting device 16 and the angle adjusting folding bundle 20 mounted side by side on the rear surface of the display mounting stand 15 are operated together, and the rod 18 from the absorber 18-2 of the angle adjusting device 16 operates. While the 18-1 is pulled out to support and support the display 11 and the display mounting stand 15 that are rotated upward, the pivoting portion 30 of the angle adjusting folding bundle 20 is the fourth shaft pin 36. It will rotate about the axis.

The rod 18 along the upper shaft piece 17-1 and the lower shaft piece 17-2 mounted on the lower side of the upper side and the absorber 18-2 on the rod 18-1, which is the angle adjusting device 16, respectively. -1) and the absorber (18-1) is axially rotated and the rod (18-1) is drawn upwards, the ball catching hole 40 formed on the inside of the rotating part 30 is the rotating part (30) The vertical surface formed on the front surface of the stone piece 42 is inserted into the stone piece 42 formed at one end of the shot catching hole 40 between the teeth 55 of the vertical tooth piece 55 projecting upward when the shaft is rotated upwards. (42-1) is in contact with the inclined surface of the teeth 55 and the lower end of the protrusion piece 42 is caught by the tip of the other teeth 55, the upper side can be rotated, but the lower side can not be rotated display ( 11) will be able to firmly support the display mounting 15 is mounted, as shown in Figure 4a.

Accordingly, the display 11 can be appropriately adjusted while pulling out the display mount 15 on which the display 11 is integrally mounted. In the state where the angle of the display 11 is properly adjusted, the instructor You can lecture.

On the other hand, when the lecture is completed and the display 11 is to be stored inside the display installation room 12, the loaded state of the ball catching hole 40 loaded between the teeth 55 of the fixing part 50 is When the pulled display 11 is pulled further upward until it is completely released, the display 11 is gradually pressed while the bullet catch 40 loaded between the teeth 55 is completely released. ), The rod 18-1 of the absorber 18-2, which was supported by the support member, gradually enters the inside of the absorber 18-2, and the angle supported by the absorber 18-2 gradually decreases. The protrusion piece 42 is accommodated in the display installation chamber 12 while passing between the teeth 55, and supports one side of the display 11 by a pedestal 14 formed in the display installation chamber 12. Supporting prevents further entry into the inside and at the same time firmly supports Which will allow you avoid.

When use of the display 11 is finished as described above, the use of the display 11 is terminated by sliding the upper cover 9 drawn out to one side in the state of being accommodated in the display installation chamber 12 to the inside. .

Although the present invention has been described in detail only with respect to the specific examples described, it will be obvious to those skilled in the art that various modifications and changes can be made within the technical scope of the present invention, and such modifications and modifications belong to the appended claims. .

Figure 1a and 1b is a perspective view showing a state in which the display device for adjusting the angle of the multimedia lecture table in accordance with the present invention installed on different multimedia lecture table.

Figure 2 is a perspective view showing a state attached to the angle adjusting folding bundle display angle adjusting device for multimedia lectures according to the present invention.

Figure 3a and Figure 3b is an exploded perspective view and a combined perspective view showing the enlarged main portion of the angle adjustment folding bundle in the display device for adjusting the multimedia lecture table according to the present invention.

Figures 4a and 4b is a cross-sectional view and operation relationship explanatory diagram of the angle adjusting folding bundle mounted on the display angle adjusting device for multimedia lecture table according to the present invention.

* Description of the symbols for the main parts of the drawings *

1-1: Stand-type Multimedia Lecture Table 1-2: Portable Multimedia Lecture Table

2: main cabinet 3: lecture operation main body 4: control panel

5: top plate 6: top cover 9: display storage room

10: Display angle adjusting device for multimedia lecture table

11: display 12: display mounting frame 16: angle adjuster

19: rotating shaft 20: angle adjusting folding bundle 30: rotating part

40: ball catching mouth 50: fixing part 53: vertical teeth piece

60: guide rail

Claims (7)

The lecture operation main body 3 is integrally installed on the upper side of the main body cabinet 2 in which various multimedia equipments are installed, or the lecture operation main body 3 is provided irrespective of the main body cabinet 2, The display mounting chamber 15 formed on the upper plate 5 of the main body 3 supports the lower end of the bottom surface of the display 11 and at the same time, the display mounting stand 15 having the rotation shaft 18-1 integrally formed on both sides thereof. The display mounting frame 12 having the angle adjusting device 16 integrally formed on both sides of the rear surface so as to adjust the rotation and angle of the display 11 and the display mounting stand 15 around the rotating shaft 18-1. In what I put on, A guide rail (60) for guiding the angle-adjusting fold bundle (20) embedded in a mandrel between the angle adjusting devices (16) formed side by side on the rear surface of the display mounting table (15); It is mounted to the inner bottom surface of the display mounting frame 12 and the inside of the guide rail 60, respectively, the angle adjustment folding bundle (20) to adjust the installation angle while folding and deploying; Display angle adjusting device for multimedia lecture. According to claim 1, One side is fixed to the inner bottom surface of the display mounting frame 12 and the other side is mounted inside the guide rail 60 and sliding angle adjustment folding bundle 20 to adjust the angle: A rotating part 30 which is transported in and out of the guide rail 60 while the roller 36 slides inward; It is used to adjust the installation angle while being loaded between the teeth 53-1 formed on the vertical teeth 53 of the fixing part 50 and detained by the third shaft pin 35 inside the pivoting part 30. Forming a ball catching ball 40; The mounting plate 51 is fixed and mounted on the inner bottom surface of the display mounting frame 12 by the fastening screw 65, and a fixing part 50 having a vertical tooth piece 53 formed at one upper end of the mounting plate 51; ; The vertical tooth piece 53 of the fixing part 50 is loaded between the fourth flow holes 32-4 of the pivoting part 30 to be integrally coupled and formed by the fourth shaft pin 36; Display angle adjusting device for multimedia lecture. The rotating part 30 of claim 2, wherein the rotating part 30 is transported while the roller 36 slides inside the guide rail 60; The vertical piece 31-2 and the protrusion piece are formed by forming a mounting frame 31 in which the projection piece 31-3 protruding downward of one side of the horizontal piece 31-1 and the vertical piece 31-2 is integrally formed. The third distribution hole (32-3) and the fourth distribution hole (32-4) with a first distribution hole (32-1), a second distribution hole (32-2) and a vertical deviation on the outer surface of (31-3) ) In communication with; The roller 37 and the elastic member are integrally formed at the rear side to the left and right sides of the first through hole 32-1, the third through hole 32-3, and the fourth through hole 32-4, respectively. Placing the vertical tooth piece 53 of the fixing part 50 to which the ball catching hole 40 and the space | interval maintenance bush 56 which are mounted are connected to the left and right on the axis line, respectively; Annular groove (33-) on one side of the first through hole (32-1) and the second through hole (32-2) and the third through hole (32-3) and the fourth through hole (32-4) 3) 34-3, 35-3, 36-3, the first shaft pin 33, the second shaft pin 34, and the third shaft pin 35 and the fourth shaft pin 36 are sequentially formed Multimedia ring, characterized in that the mounting ring is fixed to each of the annular groove (33-3) (34-3) (35-3) (36-3) in the state to be protruded to the other side; Alternative display angle adjuster. The fixing part 50 of claim 2, wherein one side of the display mounting frame 12 is fixed to the inner bottom surface of the display mounting frame 12 and integrally coupled to the pivoting part 30 is: Forming a rectangular mounting plate 51 to form first fastening holes 52-1 and second fastening holes 52-2 at the rear and front of the same line; The installation hole 53 is connected to the outer surface protruding vertically on one side of the upper end of the mounting plate 51, the elongated surface (53-1) is formed on the front and the plurality of teeth (55) formed at equal intervals on the vertical Tooth 53 is formed integrally with; display device for adjusting the angle of multimedia lecture. The method according to claim 2, wherein the interlocking force intermittently folds and expands while being interposed between the teeth 45 of the vertical tooth piece 43 by the rotation part 30 which is integrally held by the third end bar 34-3 and is axially rotated. The phrase 40 is: A trapezoidal body formed with a trapezoidal body having a coupling hole 41-1 passing through the outer surface center thereof; On the front surface of the latching body 41, the width of which is narrowed, a horizontally protruding stone piece 42 is formed, and the front surface of the stone piece 42 forms a vertical surface 42-1 so as to be perpendicular to the inclined surface of the teeth 55. To be connected; The rear surface of the hanger body 41 is formed integrally with the hook piece 52 having an installation hole 53 formed on the outer surface so that one side of the elastic member can be loaded; Device. The guide rail 60 of claim 1, which is provided with a mandrel on the rear surface of the display mounting stand 15 to guide the pivoting portion 30 of the angle adjustment folding bundle 20: Both ends of the horizontal surface 61 are formed with a vertical piece 62 bent downward, and at the lower end of the vertical piece 62 is bent inward by a predetermined width to form a bending piece 63 to form a rectangular box shape. Display angle adjusting device for multimedia lecture hall, characterized in that. The elasticity of claim 5, wherein the elastic member is mounted on the mounting hole 43-1 of the hook piece 43 and the shaft bar 35-1 of the third shaft pin 35 to maintain the horizontal state of the bullet catching hole 40 at all times. The member is a coil spring (45); display device for adjusting the angle of multimedia lecture.

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