JPS6323062B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roof structure for a container, and is particularly suitable for application to a container for transporting, for example, grains that tend to get damp.

As shown in FIG. 1, the conventional roof structure of a container is such that a flat roof plate 3 is installed between a top heel 2 provided at the upper part of a side panel 1.

On the other hand, in conventional containers of this type, the internal cargo compartment is almost sealed, so the internal temperature of the cargo compartment increases due to the effects of sunlight, etc.
The temperature difference between the inside and outside of the container tends to be relatively large. For this reason, if the humidity in the cargo compartment inside the container was high, there was a problem in that dew condensed inside the cargo compartment. Particularly when transporting perishable products such as grains and fruits, the temperature in the cargo compartment inside the container further increases due to the respiration of these grains and fruits.
In addition, the transpiration effect resulted in high humidity, making dew condensation more likely.

At this time, in a container with a conventional structure as shown in Fig. 1, since the roof plate 3 is constructed in a flat plate shape, water droplets condensed on the inner surface of the roof plate 3 fall onto the cargo and damage the cargo. This method had the disadvantage of getting the cargo wet and causing damage such as corrosion and rot.

The present invention has been made in view of these problems, and provides a roof structure for a container that can reliably discharge water droplets generated on the inner surface of the roof to the outside of the container without causing them to fall onto the cargo. This is what we are trying to provide.

First, a reference example of the present invention will be explained with reference to FIG.

In FIG. 2, the roof plate 6 of the container has an approximately inverted V-shaped cross section with a protruding central portion. Therefore, the water droplets that have condensed on the inner surface of the roof panel 6 are guided to both side panels 8 along the sloped surface 7 of the inner surface of the roof panel 6, and are passed through the ventilator 9 provided at the top of the side panel 8 into the container. Expelled outside. The ventilator 9 is provided over almost the entire length of a longitudinal member corresponding to a conventional top rail, and the upper surface of the ventilator 9 is formed into a gutter-like recess 10. The water droplets guided from the roof panel 6 are as shown by the arrows in FIG.
It is introduced into the ventilator 9 through an introduction hole 11 provided at the bottom of the recess 10, and is discharged out of the container through a drainage hole 12 provided at the bottom of the ventilator 9. The container is ventilated through the drainage hole 12 and the ventilation hole 14 provided in the inner wall 13 of the container.

In this reference example, the inner surface of the roof board 6 itself is formed into an inclined surface 7, and the condensed water generated on the inner surface is guided to the side panel 8 along the inclined surface 7. Therefore, it is possible to prevent condensed water from falling onto the cargo to some extent. However, in the structure of this reference example, when the condensed water droplets are large or when the container vibrates in the case of a container car, the condensed water is not guided well by the inner surface of the roof 9 and falls onto the cargo. There is a risk of falling.

The present invention is an improvement on the above points, and an embodiment thereof will be described below with reference to FIGS. 3 and 4.

A first embodiment of the present invention is shown in FIGS. 3A and 3B.

In this example, an inclined plate 18 having a substantially inverted V-shaped cross section is provided inside a flat roof plate 17. This inclined plate 18 is attached to the inner wall 20 of the container via a support piece 19, and the air gap 21 between this inclined plate 18 and the roof plate 17 is a ventilation passage 22.
It communicates with the cargo hold 23, which is a loading space for containers, through the container.

In this example, as described above, the roof structure is a double structure consisting of the roof plate 17 and the inclined plate 18, with a gap 21 provided therebetween, and this gap 21 is connected to the cargo compartment 23.
It communicates with Therefore, the temperature increase of the roof plate 17 due to solar radiation etc. is not directly transmitted to the inclined plate 18, and there is almost no difference in temperature between the upper and lower surfaces of the inclined plate 18. Therefore, condensation water does not form on the inclined plate 18, and the condensed water that forms on the inner surface of the roof plate 17 and falls is guided to the inclined surface 24 provided on the upper surface of the inclined plate 18, and is guided to the inclined surface 24 provided on the upper surface of the inclined plate 18, and is guided to the side panels 8. are guided to the ventilators 9, respectively. Since the configuration of the ventilator 9 may be the same as that of the above-mentioned reference example, the same parts are given the same reference numerals in the figures, and the explanation thereof will be omitted.

In this example, a ventilator 9 is provided at the upper part of the side panel 8, and condensed water is discharged to the outside through this ventilator 9, so that condensed water is prevented from accumulating inside the container. Furthermore, by providing the ventilator 9, it is also possible to alleviate the rise in temperature and humidity inside the container.

Note that the inclined plate only needs to be inclined toward at least one side wall portion (including both side wall portions and both end wall portions) of the container.

Note that with the configuration of this example, dew condensation due to temperature differences can be generated only on the inner surface of the roof plate 17, so it is possible to dehumidify the cargo compartment 23 inside the container.

A second embodiment of the present invention is shown in FIG. 4, and in this example, the inclined plate disposed inside the roof plate 27 is constituted by a pair of left and right inclined plates 28 and 29. These inclined plates 28 and 29 are connected to each other by a connecting piece 30 approximately in the center of the container, and a large number of ventilation passages are also formed between these inclined plates 28 and 29. The inclined plate 29, which overlaps on the upper side, is fixed to the roof plate 27 by means of attachment pieces 31.

In this example, the roof plate 27 and the guide plates 28, 2
Since the air gap 32 between the inclined plates 28 and 9 is connected to the cargo compartment 33 through a larger number of air passages,
The temperature difference between the upper and lower surfaces of 9 can be more effectively reduced. Note that the configuration of other parts is the same as that of the first embodiment.

As explained above, in the present invention, the roof structure of the container is a double structure consisting of the roof and the inclined plate arranged inside the roof, and the inclined plate is attached to at least one side wall (end wall) of the container. ), so that droplets such as dew water generated on the inner surface of the roof of the container are guided to the side wall portion by this inclined plate. Then, the droplets are discharged to the outside of the container by a discharge means such as a ventilator provided on the side wall.

Therefore, droplets are reliably prevented from falling onto the loaded cargo or accumulating in the container, and even cargo such as perishable products can be transported safely and suitably.

In addition, since the space between the container roof and the inclined plate is connected to the cargo hold through a ventilation path, there is no large temperature difference between the inside and outside of the inclined plate, and therefore the lower surface of the inclined plate is There is no risk of droplets adhering.

[Brief explanation of the drawing]

FIG. 1 is a partial vertical sectional view showing the roof structure of a conventional container. FIG. 2 is a partial vertical sectional view showing the roof structure of a container according to a reference example of the present invention.
FIG. 3A is a partial vertical sectional view showing the roof structure of a container according to the first embodiment of the present invention, and FIG.
FIG. 4 is a partial vertical sectional view showing the roof structure of a container according to a second embodiment of the present invention. In addition, in the symbols used in the drawings, 17, 27...
... Roof plate, 18, 28, 29... Inclined plate, 9...
It is a ventilator (exhaust means).

Claims (1)

[Scope of Claims] 1. Disposed inside the roof of the container, above the cargo compartment of the container so as to substantially cover the cargo compartment, and extending downwardly toward at least one side wall of the container. a sloped plate that slopes; a discharge means provided on the at least one side wall portion for discharging droplets guided by the sloped plate to the outside of the container; and a space between the roof and the sloped plate. and a ventilation passage for communicating the cargo compartment with the cargo compartment.