JP7195895B2 - pedestal box for cable tv - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pedestal box installed on the ground for maintenance and inspection of a cable television communication line system configured by an underground line system.

With the recent so-called multimedia and personalization of information communication, communication facilities have become enormous. However, facilities are gradually being moved underground, and cable television is also actively moving underground.

When cable television cables are laid underground, amplifiers shall be installed at appropriate intervals in order to eliminate the attenuation of transmission signals, and the power supply for driving these amplifiers shall be installed. It is necessary to attach various equipment such as an emergency power supply to deal with power failures, etc., and there is a pedestal box that improves maintainability by arranging only the equipment part on the ground.

As an example of a pedestal box, Patent Document 1 discloses a communication cable wiring box device (pedestal box) that includes an amplifier, an emergency power supply, and a switch box for the emergency power supply.

Japanese Patent No. 3047380

Installation of a communication cable wiring box device (pedestal box) such as the invention of Patent Document 1 involves installing the box body without an amplifier or an emergency power supply inside, and then installing an amplifier or an emergency power supply. The power supply will be installed along with the wiring. This means that the installation of amplifiers and emergency power supplies is done on site.

In particular, the installation of an emergency power supply is heavy, and in some cases, it weighs more than 80 kg. On the other hand, many pedestal boxes, including those of Patent Document 1, have shapes and configurations that make installation using a crane difficult.

In addition, cables have a minimum bending radius (allowable bending radius), and cable television cables, power cables, etc. have large minimum bending radii. Since miniaturization is the deciding factor, it is necessary to develop a box device with a configuration that allows efficient wiring. Furthermore, in recent years, local government ordinances have stipulated device sizes, and there is a need to provide devices that are smaller than the stipulated sizes and that ensure workability and maintainability.
The invention of Patent Document 1 and the current pedestal box have room for improvement in the above points.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pedestal box for cable television, which can be easily installed and maintained, and which can be made as small as possible. It is something to do.

The present invention has solved the above problems, and the invention of claim 1 is a pedestal box installed on the ground for maintenance and inspection of a cable television communication line system configured by an underground line system. a main body frame ; a power supply that operates an amplifier that ensures transmission quality in case of an emergency due to a power failure ; A detachable top plate is provided on the upper surface and a back plate is provided on the rear surface, and the upper surface of the main body frame is provided with a power supply introduction port through which the power supply can be suspended and the heat inside the main body frame can be exhausted. wherein the amplifier is hooked to the back inner wall of the body frame by a slide mechanism capable of sliding in the horizontal direction, and the power supply unit is hooked to the back inner wall of the body frame via an attachment. It is a pedestal box for cable TV.

In addition, the invention of claim 2 is characterized in that the power supply introduction port is provided at two locations on the upper surface of the body frame so that the power supply can be installed on either the left or right side in a front view. 2. The pedestal box for cable television according to 1.

Further, according to the invention of claim 3, the attachment of the power supply has a space between the power supply and the wall surface of the body frame through which a cable can pass, and the upper part of the attachment has a hook shape. 3. The pedestal box for cable television according to claim 1, wherein the pedestal box for cable television according to claim 1 or 2 is constructed so as to be hooked near the upper end of the rear surface of the main body frame.

Further, according to a fourth aspect of the present invention, the slide mechanism of the amplifier has a horizontal roller in contact with a horizontal surface near the upper end portion and a vertical roller in contact with a vertical surface above and below, and the slide mechanism of the amplifier has a groove portion of a rail provided on the body frame. 4. The cable television pedestal according to any one of claims 1 to 3, wherein the pedestal for cable television according to any one of claims 1 to 3 has a structure in which the horizontal roller is hooked and horizontally abuts, and the vertical roller abuts and slides on a vertical wall surface of the rail. is a box.

Further, according to the invention of claim 5, dowels and louvers are provided on the opening/closing door, the back plate and the side plates, and dowels are provided on the top plate. A cable television pedestal box according to any one of the preceding items.

Further, according to the invention of claim 6, the top plate has a floating structure so that the heat inside the body frame can be exhausted. This is a pedestal box for

Further, the invention of claim 7 is characterized in that, in the main body frame, contact surfaces of the opening/closing door, the side plate and the top plate have a draining structure for preventing rainwater from entering inside. A pedestal box for cable television according to any one of items 1 to 6.

The pedestal box for cable television according to the present invention is heavy because the upper surface of the main body frame is provided with a power supply inlet into which the power supply can be suspended and the heat inside the main body frame can be discharged. Not only can the power supply be installed safely and quickly via the attachment, but the heat inside the pedestal box can be exhausted from the top, so heat can be efficiently exhausted by thermal convection, leading to thermal runaway and early deterioration of internal equipment. can be prevented.
In addition, since the amplifier is hooked to the back inner wall of the body frame by means of a slide mechanism capable of sliding in the horizontal direction, it can be easily attached and detached, and since it can also be slid in the horizontal direction, wiring work and maintenance work can be performed efficiently. be able to.

In addition, the invention of claim 2 is characterized in that the power supply inlets are provided at two locations on the upper surface of the body frame, and the power supply can be installed on either the left or right side when viewed from the front. It has the advantage of being able to be installed in an optimal arrangement for the installation location and also of increasing the exhaust efficiency of internal heat.

Further, according to the invention of claim 3, the attachment of the power supply has a space between the power supply and the wall surface of the body frame through which a cable can pass, and the upper part of the attachment has a hook shape. Since it is characterized by a structure in which it is latched near the upper end of the back surface of the main body frame, wiring is performed while securing the minimum bending radius of the cable in the gap of the attachment, compared to the case where there is no gap. Since the size of the pedestal box can be reduced, not only the cost of the device can be reduced, but also the installation area can be reduced.

Further, according to a fourth aspect of the present invention, the slide mechanism of the amplifier has a horizontal roller in contact with a horizontal surface near the upper end portion and a vertical roller in contact with a vertical surface above and below, and the slide mechanism of the amplifier has a groove portion of a rail provided on the body frame. The structure is characterized in that the horizontal rollers are hooked and horizontally abutted, and the vertical rollers are abutted and slid on the vertical wall surfaces of the rails. Since it can be moved horizontally with a light force, the work load can be greatly reduced, and wiring work and maintenance work can be performed easily.

Further, the invention according to claim 5 is characterized in that dowels and louvers are provided on the opening/closing door, the back plate and the side plates, and the dowels are provided on the top plate. The pasted paper such as a poster can be easily peeled off, and the low-temperature outside air can be efficiently taken in by the louver.

Further, the invention of claim 6 is characterized in that the top plate has a floating structure so that the heat inside the main body frame can be exhausted. can be exhausted to the outside. Since it has a floating structure, it can be exhausted from the gaps around the entire circumference, so it can be exhausted more quickly.

Further, the invention of claim 7 is characterized in that, in the body frame, the contact surface between the opening/closing door, the side plate and the top plate has a draining structure for preventing rainwater from entering inside. , it is possible to reduce the intrusion of rainwater to the inside as much as possible while ensuring ventilation.

1 is an overall view of a pedestal box for cable television according to an embodiment of the present invention with a cover member removed, FIG. The front perspective view of a state, (c) is a back perspective view. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the main frame of this invention, (a) is a front view, (b) is a top view, (c) is a right side view. 1 is a perspective view of a body frame of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the power supply attachment of this invention, (a) is a front view, (b) is a top view, (c) is a right side view. 1 is a diagram showing an installation state of a power supply device of the present invention, (a) is a diagram of a power supply device with a power supply attachment attached, (b) is a diagram of a state where it is inserted from a power supply inlet, (c) is a diagram showing a state in which the power supply attachment has been completely placed on the power supply attachment receiver, and (d) is a perspective view showing the installation state of the power supply. 1 is a diagram showing an amplifier slide mechanism of the present invention, (a) is a perspective view of a state attached to an amplifier, (b) is a front perspective view of the amplifier slide mechanism, and (c) is a rear perspective view of the amplifier slide mechanism. be. FIG. 2 is a diagram showing the wiring work of the cable television pedestal box of the present invention, (a) is a state diagram before wiring, (b) is a diagram of the wiring work being performed by sliding the amplifier to the left, and (c) is a diagram showing the wiring work. FIG. 10 is a diagram showing a state in which the amplifier is moved to the right after completion of the wiring work and the wiring is housed; FIG. 2 is a diagram showing a floating structure between a top plate and a body frame according to the present invention, where (a) is a perspective view of the bottom side of the top plate, and (b) and (c) are perspective views showing a state in which the top plate is attached to the body frame. is.

A cable television pedestal box according to the present invention will be described below with reference to the drawings. 1 is a view of the inside of the device with the open/close door opened and the appearance of the device, FIG. 2 is a view of the main body frame, FIG. 3 is a perspective view of the main body frame, FIGS. 4 and 5 are views of the power supply attachment, and FIG. FIG. 7 shows a slider attached to the amplifier, FIG. 7 shows a sliding state of the amplifier during wiring work, and FIG. 8 shows a floating structure of the top plate. Let A be the power supply, B be the amplifier, and C be the cable.

A cable television pedestal box 10 includes a main body frame 20, a power supply A that operates the amplifier in an emergency such as a power failure, an amplifier B that ensures transmission quality, and is detachable from the front of the main body frame. It has an opening/closing door 11, detachable side plates 12 on the left and right sides, a top plate 13 detachable on the top surface, and a back plate 14 on the back surface. A power supply introduction port 21 capable of exhausting the heat inside the body frame 20 is provided, the amplifier B is hooked to the back inner wall of the body frame 20 by an amplifier slide mechanism 40 capable of sliding in the horizontal direction, and the power supply A is It is hooked to the back inner wall of the body frame 20 via the power supply attachment 30 .

An opening/closing door 11, a side plate 12, a top plate 13, and a back plate 14 are provided with dowels 16 on the outer surfaces thereof, so that the dent strength of the plates can be increased and a poster or the like pasted on the surface can be easily peeled off. In addition, by providing the louver 15 near the heating element arranged inside the box of the opening/closing door 11, the side plate 12, and the back plate 14, low-temperature outside air can be taken in efficiently. Furthermore, by attaching a reflective material 17 to the corners of the top plate 13 or the like, it is possible to draw attention to the surroundings at night.

The body frame 20 is a main framework for housing the power supply A and the amplifier B, and is arranged on a base made according to the standards of each local government. The upper surface of the body frame 20 is provided with a power supply inlet 21 through which the power supply A can be suspended and the heat inside the body frame 20 can be exhausted. An opening/closing door 11, a side plate 12, and a top plate 13 are detachably attached to the outer surface of the body frame 20, and a draining structure is provided on the contact surface with the body frame 20 so as to prevent rainwater from entering. Although the back plate 14 is fixedly attached to the back surface of the body frame 20 in this embodiment, it may be detachable. In addition, various devices are fixed to the back inner wall.

As can be seen from FIGS. 2, 3, 7, etc., the upper surface of the body frame 20 is provided with two power supply inlets 21 in parallel. Depending on the case, the power supply A weighs 80 kg or more, and is usually suspended using a crane and placed inside the frame. Since the introduction port 21 is provided, the installation work can be easily performed by suspending and lowering the power supply A vertically.

In addition, since two power supply inlets 21 are provided, the power supply A can be placed on either the left or right side of the front view according to the installation location. However, when wiring work, removing the side plate on the left side and routing the cables makes the work easier, but if there is an obstacle such as a wall on the left side, the wiring work becomes very complicated. Therefore, in this case, by arranging the power supply A on the left side, the wiring work is performed on the right side, and the work can be performed more easily.

Furthermore, the power supply inlet 21 is located above the power supply A, and in combination with the floating structure with the top plate as shown in FIG. It has a structure that can be exhausted to. As a result, it is possible to greatly reduce the reduction in heat exhaust efficiency due to the densely packed heat generating elements such as the power supply A due to the miniaturization of the box, and to prevent the thermal runaway of the apparatus.

The power supply A is hooked to the back inner wall of the body frame 20 via the power supply attachment 30 as shown in FIGS. As shown in FIG. 4, the power supply attachment 30 is provided with a hook-shaped engaging portion 31 for engaging near the upper end portion of the rear surface of the body frame 20 at the upper portion thereof. Further, a fitting portion 32 is provided at the lower portion for fitting and mounting on the power supply attachment receiver 22 provided on the body frame 20 .

The locking portion 31 has a hook shape and is arranged at a predetermined distance from the rear surface. As a result, a gap can be provided between the back surface and the power supply A (power supply attachment 30) as shown in FIG. Since the size of the pedestal box can be reduced by wiring while ensuring the space, the size of the pedestal box can be reduced compared to the case where there is no gap, so not only the cost of the device can be reduced, but also the installation area can be reduced.

A power supply attachment receiver 22 having a mountain-shaped cross section is provided on the bottom surface of the body frame 20, and the power supply A can be installed by fitting a fitting portion 32 provided at the bottom of the power supply attachment 30. It has become. It is fixed to the body frame 20 by screwing portions (not shown) provided on the locking portion 31 . The lower fitting portion may be fixed by screwing or the like, but if the structure is such that they are fitted together and not screwed, as in the present embodiment, screwing is required in a narrow space during installation work. It is no longer necessary, and workability can be greatly improved.

The amplifier slide mechanism 40 is attached to the amplifier B and is a mechanism for horizontally sliding by hooking on a groove provided in an amplifier latching rail 23 provided on the body frame 20 .

The amplifier slide mechanism 40 has two horizontal rollers that are hooked on the grooves of the amplifier latching rail 23 and horizontally slid. A total of 4 vertical rollers, 2 upper and 2 lower, are installed.
As a result, the amplifier B weighing about 10 kg can be smoothly slid horizontally, and wiring work and maintenance work can be easily performed.

If the wiring work of the cable C is performed in a state in which the opening/closing door 11, the side plate 12 and the top plate 13 are removed, the space can be saved. First, as shown in FIG. 7(a), the power supply A is installed and fixed, and the amplifier B is latched on the amplifier latching rail 23 so that it can slide horizontally. Then slide the cable C from the underground to the side of the body frame where the cable C is opened and the widened right side space to perform the wiring work. When the wiring work is completed, the amplifier B is slid to the right as shown in FIG. 7(c), and the cable C is accommodated in the space of the power supply attachment 30, thereby completing the wiring while ensuring the minimum bending radius.
As a result, not only can the wiring work be easily performed, but also the size of the pedestal box can be reduced.

The pedestal box for cable television according to the present invention not only facilitates the installation and wiring work, but also reduces the size of the pedestal box.

A power supply device B amplifier C cable 10 pedestal box for cable television 11 open/close door 12 side plate 13 top plate 14 back plate 15 louver 16 dowel 17 reflector 20 body frame 21 power supply inlet 22 power supply attachment receiver 23 amplifier hook Stop Rail 30 Power Supply Attachment 31 Locking Part 32 Fitting Part 40 Amplifier Slide Mechanism 41 Horizontal Roller 42 Vertical Roller

Claims (7)

A pedestal box installed on the ground for maintenance and inspection of a cable television communication line system configured by an underground line system,
body frame and
A power supply that serves as a power source for operating an amplifier that ensures transmission quality in an emergency such as a power failure ;
an opening/closing door detachable on the front of the body frame, side plates detachable on the left and right sides, a top plate detachable on the top surface, and a back plate on the back;
has
A power supply introduction port is provided on the upper surface of the body frame to allow the power supply to be suspended and to exhaust heat from the body frame,
The amplifier is hooked to the back inner wall of the body frame by a slide mechanism capable of sliding in the horizontal direction,
the power supply is hooked to the back inner wall of the body frame via an attachment;
A pedestal box for cable television, characterized by:
2. The pedestal box for cable television according to claim 1, wherein the power supply inlet is provided at two positions on the upper surface of the body frame so that the power supply can be installed on either the left or the right side when viewed from the front. . The attachment of the power supply has a gap through which a cable can pass between the power supply and the wall surface of the body frame, the upper part of the attachment has a hook shape, and the upper end of the back surface of the body frame. 3. The pedestal box for cable television according to claim 1, wherein the pedestal box for cable television has a structure to be latched in the vicinity. The slide mechanism of the amplifier has a horizontal roller in contact with the horizontal surface near the upper end and vertical rollers in contact with the vertical surface above and below. 4. The cable television pedestal box according to any one of claims 1 to 3, characterized in that said vertical roller slides in contact with a vertical wall surface of said rail. The cable television according to any one of claims 1 to 4, wherein dowels and louvers are provided on the opening/closing door, the back plate, and the side plates, and dowels are provided on the top plate. pedestal box. 6. The cable television pedestal box according to any one of claims 1 to 5, wherein the top plate has a floating structure so that heat inside the body frame can be exhausted. 7. The body frame according to any one of claims 1 to 6, wherein a contact surface between the opening/closing door, the side plate and the top plate has a drain structure for preventing rainwater from entering inside. A pedestal box for cable television as described in .

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