KR100656741B1 - Monitor for railway vehicle - Google Patents

Abstract

A monitor for a railroad vehicle is provided to simply and efficiently form a track of a monitor cable to connect with a wiring cable in the railroad vehicle by constructing a relative rotating unit with a protruded boss, a flange, and a disk. A monitor for a railroad vehicle(1) includes a monitor body(10) and a rotation apparatus. The monitor body provides information through a screen to passengers. In the rotation apparatus, a body coupling bracket(30) is coupled with the body of the railroad vehicle. A monitor coupling bracket(40) is coupled with the monitor body. A relative rotating unit couples the monitor coupling bracket to the body coupling bracket so as to be capable of relative rotation. A position maintaining engaging unit(50) has one end preceding and receding toward the other end elastically by being installed at one of the monitor coupling bracket or the body coupling bracket. A position maintaining engaging receiving unit(60) is installed at the other of the monitor coupling bracket or the body coupling bracket to be engaged with the position maintaining engaging unit.

Description

Monitor For Railway Vehicle

1 is a view schematically showing the interior of a railway vehicle equipped with a railway vehicle monitor according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of a railway vehicle monitor according to an embodiment of the present invention.

3 is an assembled perspective view of FIG. 2.

4 is an assembled perspective view of FIG. 2 seen from the opposite side of FIG. 3.

5 is a cross-sectional view taken along line VV of FIG. 4.

* Explanation of symbols for main parts of the drawings

     1: Monitor for railway vehicle 10: Monitor body

    20: rotating device 30: body coupling bracket

    31: first cable installation hole 33: ceiling fixing bracket

    35: reinforcement bracket 37: rotation support bracket

    40: monitor mounting bracket 41: second cable installation hole

    43: disk position turning 50: position holding portion

    51: ball receiving portion 53: elastic spring

    55: ball 60: position holding bleeding portion

    62: position holding bleeding groove 70: stopper part

    71: extension protrusion 73: jamming protrusion

    80: relative rotation portion 81: protrusion boss

    83: flange 85: disk

    90: cable tunnel bracket 91: third cable installation hole

The present invention relates to a monitor for a railroad car, and more particularly, to be provided inside a railroad car to provide a video service to a passenger through a screen, and to fit the seating arrangement of a passenger that is arranged according to the direction of travel of the railroad car. The present invention relates to a railway vehicle monitor that may rotate.

In general, a railroad car monitor, for example, a liquid crystal display (LCD) monitor, is installed as a display device. The railroad car monitor displays the name of the next station to be stopped or provides various terrestrial broadcasts and advertisements to the passengers in the railroad car. The upper end is fixedly installed in the center of the ceiling of the body of the railway vehicle so that the beam is disposed in the front direction.

On the other hand, the railroad car travels between the first station of the departure station and the second station of the final station. After arriving at the second station, the railroad car operates the first station again as the arrival station in the opposite direction. At this time, if the railroad car can be rotated 180 degrees, it is not necessary to change the arrangement of seats, etc. However, considering that the departure and arrival stations are mainly located in the city, it is practically difficult and inefficient to provide a space for the railroad car to rotate 180 degrees. Therefore, after arriving at the second station, which is generally the last station, the railway vehicle is changed only before and after the vehicle is entered at the second station without turning 180 degrees, and is operated again as the first station. In this way, the front and rear of the vehicle is changed when operating from the first station to the second station and from the second station to the first station, so there are some railway cars whose seats are not rotatable, as in the general room of KTX. It is coupled to the body to allow the seat to rotate for passengers who wish to be seated.

 In this case, when the seat is arranged to face the direction of travel of the railroad car, the railroad car monitor that provides video service to the passenger must also be able to rotate according to the seating arrangement so that the passenger can watch the monitor while seated. However, in the existing railway vehicle monitor, there is a problem that can not be rotated because it is fixed in the room in either direction. In this case, a large number of railroad car monitors are installed indoors so that they can be seen in both directions, which is inefficient and also inefficient in terms of space utilization.

In consideration of this problem, a railroad car monitor has been introduced in which a rotating shaft coupled to a monitor body is rotatably coupled to a vehicle body of a railroad car, and a plate spring is installed on left and right monitor bodies of the rotating shaft to enable rotation. In this configuration, when a person rotates by hand, the monitor body is rotated relative to the vehicle body by the rotating shaft, but the rotation is stopped and the left and right leaf springs are held by the elastic force generated by the elastic force being pressed against the vehicle body in the state where no external force is applied.

By the way, in the conventional railway vehicle monitor, as the leaf spring rotates, it causes friction with the vehicle body by the number of rotations, and eventually the elastic force of the leaf spring decreases due to the wear of the leaf spring. Since the position maintenance is simply made by the elastic force of the leaf spring, as described above, when the leaf spring is worn down and the elastic force is degraded, there is a problem that it is easily released from the position due to slight impact or vibration. In addition, there is a problem that the vibration or shock is not transmitted to the monitor as it does not absorb the vibration or shock generated when the railway vehicle is running.

In addition, the conventional railroad car monitor has a problem that the structure is complicated because the rotary shaft is rotatably coupled to the vehicle body because the cable line for connecting to the wiring installed in the railroad car must be provided separately from the rotary shaft.

Accordingly, an object of the present invention, in order to solve such a problem in the prior art, the monitor can be rotated so as to be appropriately arranged in the seat direction of the passengers arranged in accordance with the traveling direction of the railway vehicle, of course, the structure is simpler than conventional It is to provide a railway vehicle monitor that can easily adjust the torque and absorb vibrations transmitted to the monitor better and can be more stably positioned in the conventionally arranged position suitable for the passenger's seat direction.

In addition, another object of the present invention is to provide a railroad car monitor capable of simply and efficiently forming a line of a monitor cable for connection with a wiring cable in a railroad car.

The object, according to the present invention, the monitor body for providing information through the screen to the passenger; And a body coupling bracket coupled to the vehicle body of the railroad vehicle, a monitor coupling bracket coupled to the monitor body, and a relative rotation unit for relatively rotationally coupling the monitor coupling bracket to the body coupling bracket, the monitor coupling bracket and the A position holding part provided at any one of the body coupling brackets so that one end portion of the body coupling bracket is elastically advanced and retracted toward the other side according to the relative rotation of the monitor coupling bracket with respect to the body coupling bracket, and the monitor coupling bracket and the body coupling bracket Is provided by one of the other is achieved by a railway vehicle monitor comprising a rotary device having a position holding bleeding portion that is engaged with the position holding bleed.

Here, the first cable installation hole is formed through the central region of the body coupling bracket, the second cable installation hole is formed through the concentrically concentric with the first cable installation hole in the central region of the monitor coupling bracket, the relative rotation portion The protruding boss extends downward from the edge of the first cable installation hole of the vehicle body coupling bracket and passes through the second cable installation hole of the monitor coupling bracket; A flange extending radially from an end of the protruding boss; And a disk inserted into the protruding boss at at least one position between the flange and the monitor coupling bracket and between the monitor coupling bracket and the vehicle body coupling bracket.

The position holding part includes a pair of ball receiving parts having a predetermined accommodation space and coupled to the monitor coupling bracket; An elastic spring accommodated in the ball accommodation portion; And a spherical ball disposed on an upper end of the elastic spring and elastically biased toward the vehicle body coupling bracket by the elastic spring.

The position holding bleeding portion may include a position holding bleeding groove formed in the vehicle body coupling bracket to accommodate the ball.

The body coupling bracket may include a ceiling fixing bracket fixedly coupled to the ceiling of the body of the railway vehicle; A reinforcing bracket coupled to the ceiling fixing bracket; And a rotation support bracket coupled to the reinforcing bracket, the ball having a through-hole accommodating the ball, and the position holding bleeding groove may be provided by the through-hole.

In addition, the protruding boss and the flange is preferably formed on the rotary support bracket.

The rotating device includes a cable tunnel bracket having a third cable installation hole formed concentrically with the first cable installation hole and the second cable installation hole in a central region, and coupled to an upper surface of the ceiling fixing bracket. It may further include.

On the other hand, the rotating device, preferably further comprises a stopper for limiting the relative rotation angle of the monitor coupling bracket with respect to the vehicle body coupling bracket.

The disk is provided between the flange and the monitor coupling bracket, and between the monitor coupling bracket and the body coupling bracket, and the monitor coupling bracket has a predetermined height along an edge of the second cable installation hole. Protruding upward may include a disc position convex protrusion on which the disc is disposed.

The stopper unit may further include an extension protrusion extending radially from the disc position protrusion in a radial direction by a predetermined width; And a locking protrusion on the rotation circumference of the bleeding protrusion downwardly descending a predetermined depth downward from the plate surface of the bottom surface of the rotating support bracket to be engaged with the extension protrusion.

On the other hand, an object of the present invention, the monitor body for providing information through the screen to the passenger; And a body coupling bracket coupled to the vehicle body of the railway vehicle and having a first cable installation hole formed therein, and coupled to the monitor body and having a second cable installation hole penetrated substantially concentrically with the first cable installation hole in the central area. And a rotating device having a monitor coupling bracket formed therein and a relative rotation portion for relatively rotatable coupling of the monitor coupling bracket to the vehicle body coupling bracket, wherein the relative rotation portion of the first cable installation hole of the vehicle body coupling bracket. A protruding boss extending downward from the edge portion and extending through the second cable installation hole of the monitor coupling bracket; A flange extending radially from an end of the protruding boss; And a disk inserted into the protruding boss at at least one position between the flange and the monitor coupling bracket and between the monitor coupling bracket and the body coupling bracket. .

Here, the vehicle body coupling bracket, the ceiling fixed bracket which is fixed to the ceiling of the body of the railway vehicle; A reinforcing bracket coupled to the ceiling fixing bracket; And a rotating support bracket coupled to the reinforcing bracket and having the through hole accommodated therein, wherein the protruding boss and the flange are formed on the rotating support bracket.

The rotation device may further include a stopper part for limiting a relative rotation angle of the monitor coupling bracket with respect to the vehicle body coupling bracket.

In addition, the disk is provided between the flange and the monitor coupling bracket, and between the monitor coupling bracket and the vehicle body coupling bracket, respectively, the monitor coupling bracket, the predetermined height upward along the edge of the second cable installation hole It may include a disc position convex protrusion protruding above the disc.

The stopper unit may further include: an extension protrusion extending radially from the disc position protrusion by a predetermined width; And a locking protrusion on the rotation circumference of the bleeding protrusion downwardly descending a predetermined depth downward from the plate surface of the bottom surface of the rotating support bracket to be engaged with the extension protrusion.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the inside of a railroad car equipped with a railroad car monitor according to an embodiment of the present invention. As shown in the drawing, a railroad car monitor 1 according to an embodiment of the present invention is , Is rotatably installed in the vehicle body 5 of the railway vehicle. In general, the seat 3 seated by the passenger is arranged so as to face the direction of travel of the railroad car, and when the passenger is seated in the seat 3, the screen of the railroad car monitor 1 is arranged in the front direction of the passenger and the station stops during operation. Provide video services such as guidance and terrestrial broadcasting. If the railroad vehicle proceeds in the direction of the arrow shown by the dotted line of Figure 1, the seat 3 is also rotated and rearranged in the direction of the arrow shown by the dotted line. In this case, the railway vehicle monitor 1 according to the present invention is also rotated so that the passenger can see the screen from which the video service is always provided in the seated state.

2 is an exploded perspective view of a monitor for a railway vehicle according to an embodiment of the present invention, FIG. 3 is an assembled perspective view of FIG. 2, FIG. 4 is an assembled perspective view of FIG. 2 viewed from the opposite side of FIG. 3, and FIG. 4 is a cross-sectional view taken along the line VV. As shown in these drawings, the railway vehicle monitor 1 according to an embodiment of the present invention, the monitor body 10, the monitor body 10 and the vehicle body 5 so as to be relatively rotatable relative to the vehicle body (5). It has a rotating device 20 for coupling to).

The monitor body 10 includes a liquid crystal display (LCD) having a screen display area (11) capable of displaying an image substantially so as to display the name of a station to be stopped next to passengers in a railway vehicle, or to display various terrestrial broadcasting and Provide video services such as advertising. Various advertising boards may be attached to the advertising area 13 (refer to FIG. 4) at the rear of the monitor body 10.

On the other hand, the rotating device 20, as shown in detail in Figures 2 and 4, the body coupling bracket 30 is coupled to the vehicle body 5 of the railway vehicle, and the monitor coupling bracket coupled to the monitor body 10 40, the relative rotation portion 80 for coupling the monitor coupling bracket 40 to the body coupling bracket 30 so as to be relatively rotatable, and coupled to the monitor coupling bracket 40 for the body coupling bracket 30. Position retaining portion 50, one end portion is moved forward and backward elastically toward the other side in accordance with the relative rotation of the monitor coupling bracket 40, and the position retaining portion 50 is engaged with the body coupling bracket 30 It has a position holding bleeding portion (60) to be coupled, a stopper portion (70) for limiting a relative rotational angle with respect to the vehicle body coupling bracket (30) of the monitor coupling bracket (40), and a cable tunnel bracket (90).

The body coupling bracket 30 coupled to the vehicle body 5 of the railway vehicle in a state in which the first cable installation hole 31 penetrates the central region is fixed to the ceiling of the vehicle body 5 of the railway vehicle. (33), a reinforcing bracket (35) coupled to the ceiling fixing bracket (33), and a rotating support bracket (37) having a through hole coupled to the reinforcing bracket (35) and accommodating the ball. In the present embodiment, the vehicle body coupling bracket 30 is composed of a ceiling fixing bracket 33, a reinforcing bracket 35, and a rotation support bracket 37, but all of them may be integrally formed.

In addition, the monitor coupling bracket 40 is coupled to the monitor body 10. In the central area of the monitor coupling bracket 40, the second cable installation hole 41 is substantially concentric with the first cable installation hole 31. It is formed through. The edge portion of the second cable installation hole 41 of the monitor coupling bracket 40 is provided with a disc position projection 43 which protrudes upwards along the edge so that the disc 85, which will be described later, is in contact with the upper surface. .

The relative rotation unit 80 couples the monitor coupling bracket 40 to the vehicle body coupling bracket 30 so as to be relatively rotatable. The relative rotation unit 80 extends downwardly from the edge of the first cable installation hole 31 of the rotation support bracket 37 and passes through the second cable installation hole 41 of the monitor coupling bracket 40. Protruding boss 81, a flange extending radially from the end of the protruding boss 81 (see Fig. 5), and a protruding boss 81 between the flange 83 and the monitor coupling bracket 40; One disc 85 is inserted into the installation, and the other disk 85 is inserted into the protruding boss 81 between the monitor coupling bracket 40 and the rotary support bracket 37. Briefly describing the coupling process, first, the protruding boss 81 of the rotary support bracket 37 is inserted into the second cable installation hole 41 of the monitor coupling bracket 40 without the flange 83 being formed. Although installed, one disk 85 is disposed between the monitor coupling bracket 40 and the rotation support bracket 37, and the other disk 85 is disposed to contact the bottom surface of the monitor coupling bracket 40. Then, the end of the protruding boss 81 is press-molded to form the flange 83 so that the flange 83 is caught by the disk 85. As a result, the disk 85 does not fall down and the rotatable support bracket 37 and the monitor coupling bracket 40 are rotatably coupled thereto. When the monitor coupling bracket 40 is coupled to the monitor body 10 and the rotation support bracket 37 is fixed to the ceiling of the vehicle body 5 through the reinforcing bracket 35 and the ceiling fixing bracket 33, the monitor body 10 ) Is supported by the ceiling through the rotation support bracket 37, it is possible to rotate with respect to the vehicle body (5).

In the central region of the cable tunnel bracket 90, a third cable installation hole 91 is formed concentrically with the first cable installation hole 31 and the second cable installation hole 41. And the cable tunnel bracket 90 is coupled to the upper surface of the ceiling fixing bracket (33). The cable 15 of the railway vehicle monitor 1 connected to the wiring cable installed inside the railway vehicle is provided with a first cable installation hole 31, a second cable installation hole 41, and a third cable installation hole 91. It is installed to penetrate through. That is, since the cable 15 passes through the inner spaces of the protruding boss 81 and the disk 85, the rotating structure and the cable 15 line are implemented at the same time, so that a separate cable 15 line may be provided as in the prior art. There is no need to simplify the structure.

Since the monitor body 10 can be rotated relative to the vehicle body 5 as described above, the monitor body 10 can be rotated according to the traveling direction of the railway vehicle. However, the railroad car monitor 1 must maintain a position appropriate to the passenger's seating direction while driving and can also absorb shocks and vibrations. This function is achieved by the mutual bite action of the position holding portion 50 and the position holding portion 60 to be described later.

The position holding part 50 has a predetermined accommodation space, and a pair of ball receiving portions 51 coupled to the monitor coupling bracket 40, and an elastic spring 53 accommodated and coupled to the ball receiving portion 51; It is disposed on the upper end of the elastic spring 53 is provided with a spherical ball 55 is elastically biased toward the vehicle body coupling bracket 30 by the elastic spring 53. The ball 55 is accommodated in the ball accommodating part 51 so that the upper end part is exposed to the outside, it is possible to elastically move by the elastic spring 53 disposed under the ball 55.

Position holding bleeding portion 60 has a position holding bleeding groove 62 that can accommodate the ball 55, in the present embodiment, the position holding bleeding groove 62 of the above-described rotating support bracket 37 It is provided by the through hole 62.

By the configuration of the position holding portion 50 and the position holding portion 60, the ball 55 of the position holding portion 50 is not engaged in the position holding portion receiving groove 62 55 is pressed to the bottom of the rotary support bracket 37 to maintain the elastic bias in the direction of the rotary support bracket 37. If the monitor body 10 is rotated with respect to the vehicle body 5, the display area 11 is located in the front direction of the passenger seated in the seat 3 with respect to the traveling direction of the railway vehicle 55 (55) ) Is placed in the position holding bite receiving groove 62 of the rotary support bracket 37 and the ball 55 is advanced by the elastic spring 53 is bittenly coupled to the position holding biting receiving groove (62). Therefore, in order to rotate the monitor body 10 again, the elastic force of the elastic spring 53 must be overcome, and a rotational force capable of detaching the ball 55 from the position holding and receiving groove 62 must be applied. The monitor body 10 remains in place until such a force is applied.

In addition, since the portion worn out by actually rotating the monitor body 10 is the portion of the disk 85, the ball 55 and the position retaining groove 62 associated with the detachment of the monitor body 10 are the number of times of rotation. Irrespective of the constant spring force, the engagement and release are repeated. In addition, since the ball 55 is supported by the elastic spring 53, when the impact or vibration is applied to the railroad car, the impact or vibration is partially absorbed by the elastic spring 53, so that it is applied to the monitor body 10. The impact of losing is reduced.

On the other hand, since the monitor body 10 only needs to rotate by 180 degrees according to the traveling direction of the railway vehicle, the rotation angle needs to be limited to 180 degrees. This is because the cable 15 connected to the monitor may be twisted when the monitor body 10 continuously rotates without the angle limitation. The rotation angle of the railroad car body 5 of the monitor body 10 is limited by the stopper unit 70. The stopper portion 70 includes an extension projection 71 extending radially from the disk position projection 43 of the monitor coupling bracket 40 by a predetermined width, and a rotation support bracket 37 on a rotation circumference of the engagement projection. It has a locking projection 73 is projected downward from the plate surface of the bottom surface of the bottom to a predetermined depth to be caught by the extension projection (71). In this configuration, the extension protrusion 71 provided on the monitor coupling bracket 40 does not rotate by more than 180 degrees due to the locking action of the locking protrusion 73 provided on the rotation support bracket 37. .

By this configuration, the operation of the railway vehicle monitor according to an embodiment of the present invention will be described.

The railroad car monitor 1 is installed on the vehicle body 5 so that the screen display area 11 is placed in the front direction in a state where the passenger is seated, thereby providing an image service while driving. And it is possible to install a billboard on the back of the monitor (1) for railroad cars so that passengers can see during the movement, these billboards can be made of LCD or other panels.

After the railway vehicle arrives at the terminal station, the passenger's seat 3 is rotated again before the railway vehicle runs in the opposite direction. At this time, the railway vehicle monitor 1 is also rotated. The rotation of the railway vehicle monitor 1 can be rotated only by approximately 180 degrees by the extension protrusion 71 formed on the disc position protrusion 43 and the locking protrusion 73 formed on the rotation support bracket 37. When (1) is rotated with respect to the vehicle body 5, the ball 55 is pressed out of one position holding bleeding groove 62 in contact with the rotation support bracket 37. At this time, the monitor coupling bracket 40 is rotated relative to the rotation support bracket 37 with the monitor body 10 with the disk 85 therebetween, and the ball 55 is again held at another position holding groove. When it reaches (62), it protrudes upward by the elastic spring (53) and is bit-engaged with this position holding recess (62).

When a railroad car runs in this state, the railroad car is subjected to large and small shocks and vibrations while running on the rail. However, since the ball 55 is bit-coupled to the position holding bleeding groove 62, the ball 55 is held in position unless an external force is applied to overcome the elastic force of the elastic spring 53 disposed at the lower end of the ball 55. In addition, by absorbing the elastic spring 53 to some extent, the influence of the vibration applied to the monitor body 10 is reduced.

In the above-described embodiment, the position holding bite 50 is provided in the monitor coupling bracket 40 and the position holding bite receiving portion 60 is provided in the vehicle body coupling bracket 30, but the position holding bite receiving portion 60 is provided on the vehicle body coupling bracket 30 and the position retaining portion 50 may be provided on the monitor coupling bracket 40, of course.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

As described above, according to the present invention, the monitor can be rotated so as to be appropriately arranged in the seat direction of the passenger arranged according to the traveling direction of the railway vehicle, as well as the torque is easier to control than the conventional structure and to the monitor It is possible to better absorb the transmitted vibrations and to be more stable in the conventional position in a position that is suitably arranged in the passenger's seat direction.

In addition, since the relative rotation part is composed of the protruding boss, the flange and the disk, it is possible to simply and efficiently form the line of the monitor cable for connecting with the wiring cable in the railway vehicle.

Claims (15)

A monitor body for providing information to the passenger through a screen; And A body coupling bracket coupled to a vehicle body of a railroad vehicle, a monitor coupling bracket coupled to the monitor body, a relative rotation unit for coupling the monitor coupling bracket to the body coupling bracket so as to be relatively rotatable, and the monitor coupling bracket and the vehicle body. A position holding part provided at one of the coupling brackets such that the one end portion is elastically moved forward and backward toward the opposite side according to the relative rotation of the monitor coupling bracket with respect to the body coupling bracket, and among the monitor coupling bracket and the body coupling bracket. A monitor for a railway vehicle, comprising: a rotary device provided on the other side and having a position holding bleeding portion which is engaged with the position holding bleeding portion. The method of claim 1, The first cable installation hole is formed through the central region of the body coupling bracket, the second cable installation hole is formed substantially concentrically with the first cable installation hole in the central region of the monitor coupling bracket, The relative rotation unit, A protruding boss extending downward from the edge of the first cable installation hole of the vehicle body coupling bracket and penetrating the second cable installation hole of the monitor coupling bracket; A flange extending radially from an end of the protruding boss; And And a disk inserted into the protruding boss at at least one position between the flange and the monitor coupling bracket and between the monitor coupling bracket and the vehicle body coupling bracket. The method of claim 2, The position holding grip portion, A pair of ball accommodation portions having a predetermined accommodation space and coupled to the monitor coupling bracket; An elastic spring accommodated in the ball accommodation portion; And And a spherical ball disposed on the upper end of the elastic spring and elastically biased toward the vehicle body coupling bracket by the elastic spring. The method of claim 3, The position holding bleeding portion, the rail vehicle monitor, characterized in that it comprises a position holding bleeding groove formed in the vehicle body coupling bracket to accommodate the ball. The method of claim 4, wherein The body coupling bracket is, A ceiling fixing bracket fixedly coupled to the ceiling of the body of the railroad vehicle; A reinforcing bracket coupled to the ceiling fixing bracket; And Is coupled to the reinforcement bracket, the ball includes a rotation support bracket having a through hole that is acceptable, The position maintenance bleeding groove is a railroad car monitor, characterized in that provided by the through hole. The method of claim 5, The projecting boss and the flange is a railroad vehicle monitor, characterized in that formed on the rotating support bracket. The method of claim 5, The rotating device, A third cable installation hole formed concentrically with the first cable installation hole and the second cable installation hole is formed through the central region, further comprising a cable tunnel bracket coupled to the upper surface of the ceiling fixing bracket. Monitor for railroad cars. The method of claim 5, The rotating device, And a stopper part for limiting a relative rotational angle of the monitor coupling bracket with respect to the body coupling bracket. The method of claim 8, The disc is provided between the flange and the monitor coupling bracket, and between the monitor coupling bracket and the body coupling bracket, respectively. The monitor coupling bracket is a rail vehicle monitor, characterized in that it comprises a disk position seat protrusion protruding upward a predetermined height along the edge of the second cable installation hole is the disk is disposed on the top. The method of claim 9, The stopper unit, An extension protrusion protruding radially from the disk position protrusion by a predetermined width; And And a locking projection projecting downward from the plate surface of the bottom surface of the rotary support bracket on the rotational circumference of the biting projection and being engaged with the extension projection. A monitor body for providing information to the passenger through a screen; And A body coupling bracket coupled to the body of the railway vehicle and having a first cable installation hole formed therein, and a second cable installation hole formed in the central area substantially penetrating substantially concentrically with the first cable installation hole. And a rotating device having a monitor coupling bracket to be coupled to the vehicle coupling bracket to allow the monitor coupling bracket to rotate relatively. The relative rotation unit, A protruding boss extending downward from the edge of the first cable installation hole of the vehicle body coupling bracket and penetrating the second cable installation hole of the monitor coupling bracket; A flange extending radially from an end of the protruding boss; And And a disk inserted into the protruding boss at at least one position between the flange and the monitor coupling bracket and between the monitor coupling bracket and the vehicle body coupling bracket. The method of claim 11, The body coupling bracket is, A ceiling fixing bracket fixedly coupled to the ceiling of the body of the railroad vehicle; A reinforcing bracket coupled to the ceiling fixing bracket; And Is coupled to the reinforcement bracket, the ball includes a rotation support bracket having a through hole that is acceptable, The projecting boss and the flange is a railroad vehicle monitor, characterized in that formed on the rotating support bracket. The method of claim 12, The rotating device, And a stopper part for limiting a relative rotational angle of the monitor coupling bracket with respect to the body coupling bracket. The method of claim 13, The disc is provided between the flange and the monitor coupling bracket, and between the monitor coupling bracket and the body coupling bracket, respectively. The monitor coupling bracket is a rail vehicle monitor, characterized in that it comprises a disk position seat protrusion protruding upward a predetermined height along the edge of the second cable installation hole is the disk is disposed on the top. The method of claim 14, The stopper unit, An extension protrusion protruding radially from the disk position protrusion by a predetermined width; And And a locking projection projecting downward from the plate surface of the bottom surface of the rotary support bracket on the rotational circumference of the biting projection and being engaged with the extension projection.

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