JPH0333124Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a storage box for electrical equipment, and in particular to a storage box for electrical equipment that is equipped with a mechanism for discharging water due to condensation that occurs inside the storage box. be.

The storage box for electrical equipment according to the present invention is installed outdoors and used to store various electrical equipment.

[Prior art]

Electrical equipment such as switches that are installed outdoors are usually stored and protected inside the box of a storage box, and the cables that connect to the electrical equipment inside the box are raised from underground to the ground. It is introduced into the box by penetrating the bottom of the box and connected to each electrical device.

Conventionally, storage boxes for electrical equipment installed outdoors have been designed to be sealed, even at the cable entry point, to prevent moisture such as rainwater and moisture from entering from outside as much as possible.
Even so, the air inside the box expands and contracts due to the temperature difference during the day or between the day and night, and as a result, air flows through the small gap in the sealed box itself, and along with this, moisture inside the box increases. Gradually seeped in and condensed inside, which grew to form water droplets that sometimes fell onto electrical equipment. As a result, the electrical equipment's insulation to ground deteriorated, potentially causing a ground fault. Furthermore, since the box body is in a sealed state, there is a problem in that if moisture or moisture intrudes into the box body, it will not be discharged from the box body, and the above-mentioned fear will continue indefinitely.

For this reason, the inventors of the present invention have previously devised a storage box for electrical equipment that has a structure that immediately drains water droplets due to condensation that forms inside the box as they fall. That is, the invention is an electrical equipment storage box characterized by having a top plate tilted at the top of the box body, and further provided with a conduit connected to the top plate and a drain port connected to the conduit. .

[Problem that the invention attempts to solve]

However, although the electrical equipment storage box described above has a mechanism that naturally drains water droplets generated inside the box to the outside, it is preferable to use a storage box that is equipped with a mechanism that drains water droplets more efficiently and actively. It is hoped that

[Means and effects for solving the problems] The present invention was made to solve the problems of the electrical equipment storage box mentioned above and to meet the demands. The object of the present invention is to provide a new storage box equipped with a mechanism for more efficiently and actively discharging the contents of the box. In other words, in the present invention, a large number of fins are arranged downward in the upper part of the box body, a top plate is arranged at an angle below the fins, and a water conduit connected to the top plate and a drainage water connected to the water conduit are arranged. This is a storage box for electrical equipment that is characterized by having an opening.

EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail and specifically based on drawings showing embodiments thereof.

FIG. 1 is a sectional view showing an embodiment of the electrical equipment storage box of the present invention. In the figure, 1 is a box body, 2 is a box body 1
A frame provided inside, 3 is a bottom plate of the box body 1, 3
1 is a cable introduction hole through which a cable group 6 (described later) is passed, and has a gap between the cable group 6 and the bottom plate 3; 4 is a base that supports the box body 1; 41 is a ventilation hole provided in the base 4; Electrical equipment installed inside the box 1; 6 a group of cables connected to the electrical equipment 5; 7 a number of fins arranged on the top of the box 1; 8 below the fins 7 and connected to the electrical equipment 5; A top plate located above and arranged at an angle; 9 is a water conduit attached to the frame 2; 11 is a water conduit 9;
A drainage hole provided at the bottom of the box body 1, G
is the ground.

First, the base 4 is installed on the ground G at the position of the cable group 6 raised from the ground. The base 4 is provided with ventilation holes 41 as appropriate. On the base 4 is the bottom plate 3.
is attached, and furthermore, electric equipment 5 is installed. The electrical device 5 is attached to a support member for itself, which is not shown. A cable introduction hole 31 is provided in the bottom plate 3, and a cable group 6
is introduced into the box body 1 through the cable introduction hole 31, and connected to the terminal of the electrical device 5 by a predetermined method. The cable introduction hole 31 has a gap between it and the cable group 6, and has ventilation and drainage functions after installation. A box 1 and a frame 2, in which various members are previously provided, are arranged to cover the electrical equipment 6 installed in this manner. At this time, the box body 1 is attached in advance to a frame 2, and this frame 2 further includes a large number of fins 7, which are the most distinctive feature of the present invention, as well as a top plate 8, a water conduit 9, and other necessary components. installed. A drainage hole 1 is provided in the box body 1.

The large number of "fins" 7, which are the most distinctive feature of this invention, include "fold" and "protrusion" shaped ones, and are characterized by a shape that becomes narrower or thinner toward the lower tip. .

2 to 9 are cross-sectional views or side views showing various forms of the fins 7. FIG. Figure 2 is “folds”
FIG. 3 is a side view of the fin 7, and FIG. 4 is a sectional view of the fin 7 having a slanted pleat.
FIG. 5 is a sectional view of the protruding fin 7. The tips of the folds or protrusions in the fins 7 need only be thin or thin so that water droplets cannot be retained at the tips, as shown in FIG.
Of course, the tip may have a shape as shown in FIGS. 8 to 9 depending on the technique for shaping the tip and other considerations for safety during installation work.
The material of the fins 7 is not particularly limited, and may be made of any material as long as its surface is water repellent. If the surface does not have sufficient water repellency, it may be used as the material for the fins 7 by subjecting the surface to a water treatment. Therefore, the material for the fins 7 is preferably various plastics or metals. Plastic is suitable as a material for the fins 7 because it has excellent corrosion resistance, can be easily molded into complex shapes having a large number of folds or protrusions, and can be molded in many ways. More preferred are water-repellent plastics. Furthermore, as shown in FIG. 6, for example, when plastic is used as the material for the fins 7, a material 71 with a high specific heat is buried inside to delay the temperature change within the box 1 over time. You can. The metal fins 7 can more effectively condense the moisture inside the box 1, so in that sense, it is a preferable material. The lengths of the folds and protrusions of the fins 7 should be such that moisture can easily condense, form water droplets, and flow down.

It is preferable that the fins 7 be placed as close to the box body 1 as possible to prevent moisture condensation from occurring between the fins 7 and the upper part of the box body 1. A top plate 8 is placed below the fins 7 with an appropriate gap. The top plate 8 extends entirely below the fins 7 so as to receive all the water droplets from the fins 7. It is better to make the slope as steep as possible so that the water droplets can flow down and drain immediately and effectively. If the slope is gentle, water droplets falling from the fins 7 will leave a puddle on the top plate 8, which will cause the humidity inside the box body 1 to increase later, which is not preferable. In order to prevent water puddles from remaining on the top plate 8 as described above, the surface of the top plate 8 is preferably water-repellent.

As described above, the top plate 8 receives water droplets falling from the fins 7, collects them, and makes them flow down to the tips of the fins as a water stream. The water flow is collected in a water conduit 9 which is configured like a "rain gutter" and is attached to a frame 2 within the box body 1. The water conduit 9 is connected to a drainage hole 11 provided in the box body 1, and the collected water flow is discharged to the outside of the box body 1.

As is clear from the above explanation, condensation occurs on the upper part of the electrical equipment storage box of the present invention, and when water droplets accumulate as the condensation grows, they easily fall onto the top plate. The water flows down on the top plate like a roof, and as if collecting in a rain gutter, it flows down into a conduit and is discharged through a drainage hole. Furthermore, when water droplets form due to condensation on the sides of the box, the resulting water can be discharged through the gap in the cable introduction hole.

[Effect of idea]

As described above, in the electrical equipment storage box of the present invention, water droplets generated inside the storage box do not fall directly onto the electrical equipment installed inside the storage box, and are extremely efficient and effective, as well as easily removed from the storage box. As a result, the electrical equipment inside the storage box is protected from water and moisture much better than in the case of the storage box of the previous design, extending its useful life. This provides an excellent effect of simplifying performance maintenance and maintenance management during the installation period of electrical equipment.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an electrical equipment storage box according to an embodiment of the present invention, and FIGS. 2 and 5 are cross-sectional views showing examples of the shape of the fins arranged in the storage box, respectively.
3 and 4 are side views, FIG. 6 is a sectional view of an example of a special structure of the fin, and FIGS. 7 to 9 are sectional views showing various examples of the tip of the fin. In the figure, 1: box body, 11: drainage hole, 2: frame, 3: bottom plate, 31: cable introduction hole, 4: base, 41: ventilation hole, 5: electrical equipment, 6: cable group, 7: fin , 71: Material with large specific heat, 8:
Top plate, 9: Water conduit.

Claims (1)

[Scope of utility model registration request] A large number of fins are arranged facing downward at the upper part of the box body, a top plate is arranged at an angle below the fins, and a water conduit connected to the top plate and a drainage port connected to the water conduit are provided. A storage box for electrical equipment that is characterized by: