KR102323131B1 - Distribution line support device of buildings with electric leakage warning function - Google Patents

Abstract

The present invention relates to a distribution line support device of buildings with an electric leakage warning function, comprising: a tray (100) supporting a temporarily installed distribution line (L); elevation units (200) installed on a ceiling of a building to be respectively placed on an upper side of a front-end unit and a rear end unit of the tray (100) and detachably engaged with the tray (100) and elevating and lowering the tray (100); a fixing unit (300) installed on the ceiling of the building to be placed between the pair of elevation units (200) and fixing or releasing the tray (100) elevated or lowered by the elevation units (200); an elevation input unit (400); a rotation input unit (500); a release input unit (600); an electric leakage sensor (700); a control unit (800); and a warning unit (900). In accordance with the present invention, the distribution line can be easily and conveniently fixed, providing a higher level of convenience. In addition, the problem of inconvenience caused to an indoor user since a distribution line to be temporarily installed is hung on the ceiling in the conventional methods can be fundamentally solved. When an electric leakage occurs, the electric leakage is immediately detected and notified to the surroundings, so maintenance can be rapidly conducted.

Description

Distribution line support device of buildings with electric leakage warning function

The present invention relates to a distribution line support device for a building equipped with an earth leakage warning function.

In general, a cable tray is used as a mechanism for supporting an electric wire.

The cable tray refers to a solid structure composed of a unit made of metal or non-combustible material used to support a cable or a unit assembly and accessories attached thereto, and is a ladder type, ventilation trough type, ventilation channel type, floor sealing type and other similar structures.

In general, in tunnels, factories, offshore structures, etc., cables of large and small diameters for power supply or fluid supply are arranged along the ceiling, floor, or walls, and the cables laid out in this way give aesthetics or inconvenience to passers-by. In order to avoid this, a cable tray is used to support and fix it in an organized state.

In the cable tray as described above, a conduit is attached and arranged to connect to a switchboard, etc. existing nearby.

As such, a method of connecting the conduit to the cable tray may be variously configured.

As a conventional general method, there is a method of attaching and fixing by making a hole in the side of the cable tray and inserting a conduit.

However, this method has problems in that additional equipment is required because a hole has to be drilled in the cable tray, and the cost, time, and effort required for attaching and fixing the conduit and attaching the conduit and strength decrease due to the deformation of the cable tray are increased.

As another conventional method, there is a method of installing a “C”-shaped channel on the side of the cable tray and fixing the conduit using a conduit clamp.

On the other hand, in the prior patent, it was difficult to confirm the electric leakage caused by the peeling of the underground distribution line, and in the end, if a worker approaches for repair, etc. without recognizing such a problem, the risk of electric shock due to electric leakage is considerable. It can be said that it contains the problem of

1. Republic of Korea Patent No. 10-1848848

The present invention is convenient because it is possible to easily and conveniently fix the distribution line, and it can fundamentally solve the problem that may cause inconvenience to indoor users as the distribution line to be installed is suspended from the ceiling, and when a short circuit occurs, it is immediately detected and The purpose of this is to provide a distribution line support device for a building equipped with an earth leakage warning function that enables rapid maintenance according to the notification.

The present invention for achieving the above object,

A 'C'-shaped side rail with a first coupler formed on the upper surface of the front end and the rear end, respectively, and a second coupler formed on the side to be disposed between the first coupler, and spaced apart from each other in parallel;

a rung arranged between the side rails so that both ends face the inner surface of the side rail and fixed to the side rail through a fastening means to support the distribution line;

A wire fixing mechanism consisting of an arc-shaped pedestal that is placed on the top of the rung to support the distribution line, a cover that is placed on the pedestal and wraps and holds the distribution wire together with the pedestal, and an elastic fixed leg that extends downward from the cover and is detachably hooked and fixed to the rung. tray consisting of;

An expansion and contraction drive unit installed on the ceiling of the building to be located on the top of the front end and the rear end of the tray,

An expansion and contraction unit operated by the expansion and contraction driving unit to elevate the tray;

A connector driving part installed on the lower surface of the expansion and contraction part;

an elevating unit having a coupling protrusion that is detachably fitted to the first coupling hole of the tray, installed in the connector driving part, rotated by the connector driving part, and configured with a connector for interconnecting the tray and the expansion and contraction part;

An inverted ‘Y’-shaped frame installed on the ceiling of a building to be located between the lifting units;

The finger part is disposed opposite to each other based on the frame, is hinged to be rotatably connected to the frame, rotates around the rotation point to bite or release the tray, and a finger part formed at the distal end with a locking protrusion that is removably fitted into the second coupling hole of the tray Wow,

A spring having both ends connected to each of the finger portions to pull the finger portion so as to maintain the closed state of the finger portion;

a fixing unit comprising a solenoid installed on the frame to forcibly rotate the finger by pressing the finger to spread the finger;

a lift input unit for outputting an operation signal so that the expansion and contraction drive unit can be operated;

a rotation input unit for outputting an operation signal so that the connector driving unit can be operated;

a release input unit for outputting an operation signal so that the solenoid can be operated;

an earth leakage sensor installed on the rung to detect an earth leakage;

It receives an operation signal from the lifting input unit to control the expansion and contraction actuator operation, receives an operation signal from the rotation input unit to control the operation of the connection actuator, receives an operation signal from the release input unit to control the operation of the solenoid, and detects an earth leakage from the earth leakage sensor. a control unit receiving a signal and controlling the operation of the warning unit;

It characterized in that it includes; a warning unit for emitting light and sound to the surroundings by operation control by the control unit.

The present invention is convenient because it is possible to easily and conveniently fix the distribution line, and it can fundamentally solve the problem that may cause inconvenience to indoor users as the distribution line to be installed is suspended from the ceiling, and when a short circuit occurs, it is immediately detected and There is an advantage in that rapid maintenance is possible by notifying the

1A and 1B are perspective views showing a distribution line support device of a building equipped with an earth leakage warning function according to the present invention from different directions;
2 is a front view of a distribution line support device of a building equipped with an earth leakage warning function according to the present invention.
3 is a side view of a distribution line support device of a building equipped with an earth leakage warning function according to the present invention.
4A to 4C are views showing a perspective view of a tray and a wire fixing mechanism in a distribution line supporting device of a building having an earth leakage warning function according to the present invention.
5 is a perspective view showing the lifting unit separately from the distribution line support device of a building equipped with an earth leakage warning function according to the present invention.
6 is a block diagram showing the correlation between each component in the distribution line support device of a building equipped with an earth leakage warning function according to the present invention.
7A to 7D are views showing the operating state of the distribution line support device of a building equipped with an earth leakage warning function according to the present invention.

Hereinafter, it will be described in detail based on the accompanying drawings.

1A and 1B are perspective views showing a distribution line support device of a building having an earth leakage warning function according to the present invention from different directions, and FIG. 2 is a front view of a distribution line supporting device of a building having an earth leakage warning function according to the present invention. , FIG. 3 is a side view of a distribution line support device of a building having an earth leakage warning function according to the present invention, and FIGS. 4a to 4c are a perspective view of a tray and a wire fixing mechanism in the distribution line supporting device of a building equipped with an earth leakage warning function according to the present invention 5 is a perspective view showing the lifting unit separately extracted from the distribution line support device of a building having an earth leakage warning function according to the present invention, and FIG. 6 is a building having an earth leakage warning function according to the present invention. It is a block diagram showing the correlation between each component in the distribution line support device.

1A to 6 , the power distribution line support device of a building having an earth leakage warning function according to the present invention includes a tray 100 and a pair of lifting units 200 , a fixed unit 300 , and a lifting input unit 400 . , a rotation input unit 500, a release input unit 600, an earth leakage sensor 700, a control unit 800, and a warning unit 900. According to this, the power distribution line L can be easily and conveniently fixed, By suspending the power distribution line (L) to be installed from the ceiling, problems that may cause inconvenience to indoor users can be fundamentally solved, and when a short circuit occurs, it is immediately detected and notified to the surroundings, enabling rapid maintenance. has the characteristic of being

1A to 4C , the tray 100 is composed of a side rail 110 , a rung 120 , and an electric wire fixing mechanism 130 , and in this embodiment supports and supports the erected distribution line (L). plays a role

The side rail 110 is a metal member having a cross section of a 'C' shape as a whole, and in this embodiment, it is spaced apart from each other in parallel. The first coupler 111 penetrating up and down is integrally formed on the upper surface of the front end and the rear end of the side rail 110, and the second coupler 112 penetrating in a rectangular shape is integrally formed on the side surface, The second coupler 112 is disposed between the first coupler 111 . Here, the coupling protrusion 241 of the coupling member 240 is detachably fitted to the first coupling hole 111 and coupled thereto, and the engaging protrusion 321 of the finger part 320 is detachably inserted into the second coupling member 112 . inserted and interconnected.

The rung 120 is a member for interconnecting the side rails 110, is disposed between the side rails 110, both ends are abutted against the inner surface of the side rail 110, and passes through the side rails 110. It is fixed to the side rail 110 via a fastening means (eg, a screw bolt) and serves to support and support the distribution line (L) having a connector (C) installed at one end.

The wire fixing mechanism 130 is composed of a pedestal 131 , a cover 132 , and a stopper 133 , and serves to fix the distribution wire L to the rung 120 . Here, the pedestal 131 and the cover 132 form an arc shape, more specifically, a semicircle when viewed from the front. The pedestal 131 is placed on the upper surface of the rung 120 and serves to support and support the power distribution line L leading to the inside, and the cover 132 is disposed on the upper surface of the pedestal 131 and together with the pedestal 131 . It plays a role of enclosing and detaining the distribution line (L). On the inner peripheral surface of the support 131 and the cover 132, non-slip portions 131a and 132a manufactured in a concave-convex shape to limit the slip of the distribution line L are integrally formed. In addition, the front and rear ends of the cover 132 extend downward and a stopper 132b disposed at the front and rear ends of the pedestal 131 is integrally formed, and the stopper 132b is for limiting the slip of the pedestal 131. will be. On the other hand, the fixing leg 133 extends downward from the stopper 132b of the cover 132 and is detachably fixed to the rung 120. Accordingly, the pedestal 131 and the cover 132 hold the distribution line L. It will be possible to be fixed to the rung 120 in one state. For reference, a triangular protrusion is integrally formed at the end of the stopper 132b so as to be latched and fixed to the rung 120 .

Referring to FIGS. 1A to 3 and 5 , the elevating unit 200 is composed of a telescopic actuator 210 , a stretchable part 220 , a connector driving part 230 and a connector 240 , and in this embodiment, a tray It is installed on the ceiling of the building so as to be positioned on the upper end of the front end and the rear end of ( 100 ), and is detachably coupled with the tray 100 to raise and lower the tray 100 .

The expansion and contraction drive unit 210 is a well-known servomotor, and is controlled by the control unit 800 to increase or decrease the expansion and contraction unit 220 .

The stretchable part 220 is a known multi-stage cylinder that elevates (moves up and down) the tray 100 while being stretched or contracted by sliding by the expansion and contraction driving part 210 .

The connector driving unit 230 is a normal stepping motor, and is controlled by the controller 800 to rotate the connector 240 by 90 degrees.

The connector 240 is a rectangular plate having a predetermined thickness, fixed to the shaft of the connector driving part 230 and rotated by the connector driving part 230, and the first coupler 111 of the tray 100 on the upper surface of both ends. ) A coupling protrusion 241 that is detachably fitted to the ) is integrally formed. When the coupler 240 is arranged in a direction perpendicular to the longitudinal direction of the tray 100 and the first coupler 111 and the engaging protrusion 241 of the tray 100 are coupled to each other, the connector The tray 100 and the lifting unit 200 are interconnected via the 240 .

For reference, since the expansion and contraction driving unit 210 and the expansion and contraction unit 220 are disclosed in detail in Korean Patent Registration No. 10-1452418, which is already well known in the relevant field, a detailed structure and operation relationship will be omitted.

1A to 3 , the fixing unit 300 is composed of a frame 310, a finger part 320, a spring 330, and a solenoid 340. In this embodiment, a pair of lifting units ( 200) is installed on the ceiling of the building to be disposed between and serves to fix and release the tray 100 lifted by the lifting unit 200.

The frame 310 is an inverted 'Y'-shaped member, and in this embodiment, is installed and fixed to the ceiling of a building. In this frame 310, the finger portions 320 bent in a 'V' shape are disposed to face each other with respect to the frame 310 and are respectively hinged to the frame 310 via pins. At the end of the finger part 320, a triangular locking projection 321 is integrally formed, and the locking projection 321 is detachably inserted into the second coupling hole 112 of the tray 100 to be inserted into the tray 100. serves to detain Also, a normal spring 330 (coil spring) is disposed between the finger portions 320 , and each end of the spring 330 is fixed to the finger portions 320 , respectively. The spring 330 fixed in this way serves to pull the finger part 320 so that the finger part 320 always maintains a closed state.

As an example, the tray 100 is drawn between the fingers 320 of the fixing unit 300 in the process of being lifted by the elevating unit 200 . The finger part 320, which has been tried, naturally spreads, and as the locking protrusion 321 of the finger part 320 enters the second coupling hole 112 of the tray 100, the tray 100 is fixed.

On the other hand, the tray 100 is fixed by the finger portion 320 of the elevating unit 200, and if the finger portion 320 is not released from the tray 100, the lowering of the tray 100 is fundamentally difficult. There is a problem, and this was solved with the solenoid 340.

The solenoid 340 is installed on the frame 310, and the solenoid 340 presses one end of the finger part 320 so that the finger part 320 is rotated around the rotation point of the pin and forcibly spread apart. A rod 341 is provided.

For example, when the rod 341 is lowered by the solenoid 340, the finger part 320 is pressed by the rod 341 and spreads, and in this process, the spring 330 is stretched. Conversely, when the rod 341 is raised by the solenoid 340 , the pressing state of the finger part 320 is naturally released, and the finger part 320 is closed by the restoring force of the spring 330 .

The elevation input unit 400, the rotation input unit 500, the release input unit 600, the earth leakage sensor 700, the control unit 800, and the warning unit 900 will be described with reference to FIG. 6 as follows.

The lifting input unit 400, the rotation input unit 500, and the release input unit 600 are buttons of a general remote controller. print out And when the operator presses the rotation input unit 500, an operation signal is output so that the connection driving unit 230 can be operated. Finally, when the operator presses the release input unit 600, an operation signal is output so that the solenoid 340 can be operated.

For example, the remote controller may be provided with two lifting input unit 400 buttons, one is a button for raising the lifting unit 200, the other is a button for lowering the lifting unit 200 can be

Only one button of the rotation input unit 500 may be formed, and when the operator presses the rotation input unit 500 , the connector driving unit 230 rotates in units of 90°.

Finally, only one button of the release input unit 600 may be formed, and when the operator presses the release input unit 600 , the rod 341 of the solenoid 340 protrudes and presses the finger unit 320 .

The earth leakage sensor 700 is installed on the metal rung 120 constituting the tray 100 , and serves to output an earth leakage detection signal to the control unit 800 when an earth leakage is detected.

Subsequently, the control unit 800 is a general microcomputer, and receives an operation signal from the lifting input unit 400 to control the operation of the expansion and contraction drive unit 210 , and the expansion and contraction drive unit 210 controls the operation by the control unit 800 . The tray 100 is lowered or raised by increasing or decreasing the stretchable portion 220 .

In addition, the control unit 800 receives an operation signal from the rotation input unit 500 to control the operation of the connection drive and drive unit 230 , and the connection drive and drive unit 230 is operated and controlled by the control unit 800 to rotate in units of 90°. do.

In addition, the control unit 800 receives an operation signal from the release input unit 600 to control the operation of the solenoid 340, and the solenoid 340 is controlled by the control unit 800 to project the rod 341. do.

Finally, the control unit 800 receives the earth leakage detection signal from the earth leakage sensor 700 to control the operation of the warning unit 900, and the warning unit 900 is operated and controlled by the control unit 800 to light the surroundings. and a warning sound are emitted, and workers can intuitively check whether there is an electric leakage through light and sound, so there is an advantage to perform quick maintenance.

7A to 7D are diagrams illustrating an operating state of a distribution line support device of a building equipped with an earth leakage warning function according to the present invention, which will be described with reference to the following.

First, the tray 100 is placed on the floor.

When the tray 100 is placed on the floor, the operator fixes the distribution wire L to the rung 120 using the wire fixing mechanism 130, which will be described in more detail as follows.

First, the distribution line (L) is detained using the pedestal 131 and the cover (132).

Then, when the rung 120 is pressed toward the rung 120 with the fixed leg 133 disposed therebetween, the fixed leg 133 is opened and caught on the lower surface of the rung 120 , and accordingly The pedestal 131 and the cover 132 are fixed to the rung 120 in a state where the distribution line L is pressed, as well as the separation of the distribution line L is restricted by the wire fixing mechanism 130 .

When the distribution line (L) is fixed to the tray 100 by the above method, the operator presses the lifting input unit 400 so that the stretching unit 220 of the lifting unit 200 extends downward.

That is, when the operator presses the lifting input unit 400 , an operation control signal is output from the lifting input unit 400 to the control unit 800 , and the control unit 800 receives the operation control signal from the lifting input unit 400 and receives the operation control signal. The operation control 210 is performed, and the expansion and contraction part 220 which is a multi-stage cylinder protrudes downward by the expansion and contraction driving part 210 .

For reference, since the expansion and contraction driving unit 210 and the expansion and contraction unit 220 are already disclosed in detail in Korean Patent Registration No. 10-1452418, which is well known in the relevant field, a detailed description thereof will be omitted.

When the expansion and contraction part 220 protrudes downward as described above, the operator lifts the tray 100 so that the connector 240 is inserted and disposed inside the tray 100 , and then the operator uses the rotation input unit 500 . Press so that the connector 240 is rotated.

That is, when the operator presses the rotation input unit 500 , an operation control signal is output from the rotation input unit 500 to the control unit 800 , and the control unit 800 receives the operation control signal from the rotation input unit 500 and receives the connection tool driving unit. 230 is controlled, and the connector 240 is rotated by the connector driving unit 230 to be disposed in a direction perpendicular to the tray 100 .

When the connector 240 is disposed in a direction orthogonal to the tray 100 as described above, the operator slowly lowers the holding tray 100 and connects the connector 240 to the first coupler 111 of the tray 100. While fitting the coupling protrusion 241, the tray 100 is supported in a suspended state by the connector 240.

As described above, when the operator presses the lifting input unit 400 while the tray 100 and the lifting unit 200 are interconnected via the connector 240 as described above, the operation control signal from the lifting input unit 400 is transmitted to the control unit 800. is output, and the control unit 800 receives the operation control signal from the lifting input unit 400 to control the operation of the expansion and contraction drive unit 210 , and the expansion and contraction unit 220 , which is a multi-stage cylinder, is gradually reduced by the expansion and contraction drive unit 210 . while moving the tray 100 upward.

As described above, in the process in which the tray 100 is moved upward by the elevating unit 200, it is introduced between the finger portions 320 of the fixing unit 300, and the finger portions 320 by the tray 100 introduced in this way. is gradually opened, and the spring 330 is tensioned by the finger portion 320 that is opened.

And while the tray 100 is raised to a predetermined height, the locking protrusion 321 of the finger part 320 is inserted into the second coupler 112 to bite the tray 100 and fix it.

When the tray 100 is fixed to the fixing unit 300 as described above, the operator stops the operation of the expansion and contraction drive unit 210 to prevent unnecessary power consumption, and even if the operation of the expansion and contraction drive unit 210 is stopped in this way, the fixed unit Since the 300 firmly holds the tray 100, the tray 100 is maintained in a fixed state without falling, and a series of such processes is illustrated as in FIGS. 7A to 7C.

On the other hand, when the tray 100 needs to be replaced or a new power distribution line L is installed in only some sections, the tray 100 must be lowered to the floor of the building, and the finger 320 bites the tray 100 and Since there is, it is not easy to separate the tray 100 from the finger part 320 .

In this case, as shown in FIG. 7D , when the operator presses the release input unit 600 in a state where power is applied to the lifting unit 200 , the operation control signal from the release input unit 600 is transmitted to the control unit 800 . output, the control unit 800 receives an operation control signal from the release input unit 600 to control the operation of the solenoid 340 , and the solenoid 340 is operated and controlled by the control unit 800 to project the rod 341 . will make it

When the rod 341 is lowered by the solenoid 340, the finger part 320 is pressed by the rod 341 and rotates around the shaft pin and spreads as it spreads using the elevating unit 200 to the tray 100. A condition is provided for lowering the , and the operator lowers the tray 100 using the elevating unit 200 by pressing the elevating input unit 400 .

On the other hand, when an earth leakage occurs due to damage to the covering of the distribution line (L) in the installed state as shown in FIG. 1B, the earth leakage sensor 700 installed on the rung 120 of the tray 100 detects it and outputs a leakage detection signal. , the control unit 800 receives the earth leakage detection signal from the earth leakage sensor 700 to control the operation of the warning unit 900 , and the warning unit 900 is operated and controlled by the control unit 700 to surround the light and sound. will emit

Therefore, the operator can intuitively recognize that the current is short-circuited by the light and sound emitted from the warning unit 900, and thus protect the operator from the risk of electric shock and fire through prompt repair work. be able to give

Although the present invention has been described in detail only with respect to the specific embodiments described, it is natural for those skilled in the art that various changes and modifications can be made within the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

100: tray 110: side rail 111: first coupling hole
112: second coupler 120: rung 130: wire fixing mechanism
131: pedestal 131a: non-slip portion 132: cover
132a: non-slip part 132b: stopper 133: fixed leg
200: elevating unit 210: telescopic drive unit 220: telescopic unit
230: connector driving part 240: connector 241: coupling projection
300: fixed unit 310: frame 320: finger portion
321: locking projection 330: spring 340: solenoid
341: rod 400: lift input unit 500: rotation input unit
600: release input unit 700: earth leakage sensor 800: control unit
900: warning unit

Claims (1)

A first coupler 111 formed on the upper surface of the front end and the rear end, respectively, and a second coupler 112 formed on the side to be disposed between the first coupler 111, a 'c' spaced apart from each other in parallel A side rail 110 in the shape of a ruler,
The rung 120 is disposed between the side rails 110 so that both ends face the inner surface of the side rail 110 and is fixed to the side rail 110 through a fastening means to support the distribution line L;
An arc-shaped pedestal 131 that is placed on the upper surface of the rung 120 to support the distribution line L, a cover 132 that is placed on the pedestal 131 and wraps and detains the distribution line L together with the pedestal 131, a cover ( Tray 100 consisting of an electric wire fixing mechanism 130 extending downward from 132 and having elastic fixing legs 133 that are detachably hooked and fixed to the rung 120;
An expansion and contraction drive unit 210 installed on the ceiling of the building to be positioned on the upper end of the front end and the rear end of the tray 100, respectively;
An expansion and contraction unit 220 operated by the expansion and contraction driving unit 210 to elevate the tray 100;
A connector driving part 230 installed on the lower surface of the expansion and contraction part 220,
It has a coupling protrusion 241 that is removably fitted to the first coupling hole 111 of the tray 100, is installed in the coupling drive driving part 230, is rotated by the coupling drive driving part 230, and the tray 100 and Elevating unit 200 consisting of a connector 240 for interconnecting the expansion and contraction unit 220;
A reverse 'Y'-shaped frame 310 installed on the ceiling of a building to be positioned between the lifting units 200,
It is disposed opposite to each other with respect to the frame 310 and is rotatably hinged to the frame 310, rotates about the rotation point to bite or release the tray 100, and the second coupling hole of the tray 100 ( A finger portion 320 having a locking protrusion 321 that is detachably fitted to the 112) is formed at the distal end thereof, and
A spring 330 with both ends connected to the finger portion 320 to pull the finger portion 320 so as to maintain the closed state of the finger portion 320;
a fixing unit 300 installed on the frame 310 and configured with a solenoid 340 for forcibly rotating the finger portion 320 by pressing the finger portion 320 so that the finger portion 320 is opened;
an elevating input unit 400 for outputting an operation signal so that the expansion and contraction driving unit 210 can be operated;
a rotation input unit 500 for outputting an operation signal so that the connector driving unit 230 can be operated;
a release input unit 600 for outputting an operation signal so that the solenoid 340 can be operated;
an earth leakage sensor 700 installed on the rung 120 to detect an earth leakage;
Receiving an operation signal from the lifting input unit 400 to control the operation of the expansion and contraction drive unit 210 , receive an operation signal from the rotation input unit 500 to operate and control the connector drive unit 230 , and an operation signal from the loosening input unit 600 . a control unit 800 to receive and control the operation of the solenoid 340, and to receive an earth leakage detection signal from the earth leakage sensor 700 to control the operation of the warning unit 900;
A power distribution line support device for a building having an earth leakage warning function, comprising: a warning unit 900 that is controlled by the control unit 800 and emits light and sound to the surroundings.

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