JPH0746719A - Underfloor storage box for equipment for electric rolling stock - Google Patents

Abstract

PURPOSE:To reduce the size of a box and equipment to be stored and enhance the life of the equipment stored by greatly reducing the temperature rise inside the box by permitting effective ventilation inside the underfloor storage box for equipment for electric rolling stock. CONSTITUTION:A shield board 11 also functioning as a cover for a ventilating hole 4 is provided at the bottom of an underfloor storage box for equipment for electric rolling stock, the ventilating hole 4 is made larger, and a fan 15 is installed inside the box in order to forcibly circulate air in the box and outside air thereby relieving the temperature rise of air in the box. Moreover, by installing a filter 18 to a cover 7 for a ventilating hole 5 for an inspection cover 2a, the ingress of dust and rain water into the box can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device storage box installed under the floor of an electric vehicle.

[0002]

2. Description of the Related Art FIG. 4 is a side sectional view showing a conventional under-floor equipment storage box for an electric vehicle, FIG. 5 is a front view thereof, FIG. 6 is a bottom view thereof, and FIG. 7 is a partial side sectional view showing a bottom portion thereof. FIGS. 8A and 8B are partial bottom views for showing the bottom part of the same. In the figure, 1 is a box frame for storing each component, 2
a and 2b are inspection covers, 3a to 3c are internal heating devices,
4 is a ventilation port provided on the bottom surface of the box frame 1, 5 is a ventilation port provided on the inspection cover 2a, and 6a and 6b are for preventing dust and rainwater from entering the box through the ventilation port 4 as much as possible. The cover 7 provided is a cover provided to prevent dust and rainwater from entering the box through the ventilation port 5 as much as possible.

Next, the operation will be described. In the conventional electric vehicle equipment storage box, the air inside the box expanded by the heat generation of the storage equipment in the box is shown in FIG. 1 through the ventilation ports 4 and 5 due to the pressure difference from the atmospheric pressure and natural convection or convection due to the running wind of the vehicle. The outside air and the air inside the box were circulated as indicated by the arrow.

[0004]

The conventional equipment storage box is constructed as described above, but in this case, when the vehicle is stationary, the temperature inside the box rises due to radiant heat from the road surface or rail surface. Therefore, in order to maintain the performance of built-in equipment and prevent deterioration, it is necessary to make the box and equipment large. In addition, it is necessary to prevent dust and rainwater from entering by rolling up the wheels as much as possible, but there is a problem that a sufficient ventilation effect cannot be obtained because a large ventilation opening cannot be provided in the box and the inspection cover. .

The present invention has been made in order to solve the above problems, and an object thereof is to obtain an equipment storage box which can reduce the temperature rise in the box and can reduce the size of the storage equipment and the box. .

[0006]

An electric vehicle equipment storage box according to the present invention is provided with a heat shield plate that also serves as a cover of a ventilation port on the bottom surface of the box, and is placed inside the box facing the ventilation port of the inspection cover. A fan is provided and a filter is attached to the cover attached to the inspection cover.

[0007]

In the electric vehicle equipment storage box according to the present invention, a heat shield plate also serving as a cover for the ventilation opening is provided on the bottom surface of the box frame, the ventilation opening on the bottom surface is enlarged, and a fan is installed on the ventilation opening and an inspection cover is provided. Since a filter is provided on the cover of the ventilation port, effective ventilation is required, temperature rise in the box is significantly reduced, and the box and the storage device can be downsized. Further, the life of the storage device can be improved.

[0008]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a side sectional view showing an underfloor equipment storage box for an electric vehicle according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a bottom view thereof. In the figure, the same parts as those in the prior art are designated by the same reference numerals. Reference numeral 11 denotes a heat shield plate, which is attached to a seat 12 provided on the bottom surface of the box frame 1 by a fastening member 13 with a constant gap 14 maintained between the bottom surface of the box and the bottom surface of the box to increase the temperature inside the box due to radiant heat from the road surface and rail surface. Is being reduced. The shielding plate 11 also serves as a cover for the ventilation port 4 provided on the bottom surface of the box frame 1 to prevent dust and rainwater from entering the box through the ventilation port 4 as much as possible. Reference numeral 15 denotes a fan disposed inside the ventilation port 5, which is attached to a mounting leg 16 provided in the box by a tightening member 17 to promote circulation of air in the box. Reference numeral 18 denotes a filter which prevents dust and rainwater from entering the box through the ventilation port 5 provided in the inspection cover 2 as much as possible. Reference numeral 19 is a ventilation window provided in the cover 7.

Next, the operation will be described. The air in the box whose temperature has risen due to the heat generation of the heat-generating devices 3a to 3c housed in the box increases the pressure in the box due to the expansion of the air and the fan 15
By the action of the
It is forcibly exhausted to the atmosphere via the ventilation port 19 and the filter 18 provided in the. Further, since the lower portion 20 of the cover 7 is open, the air in the box is also exhausted from here. On the other hand, from the ventilation port 4 provided on the bottom surface of the box frame 1, the outside air is forcibly sucked into the box by the action of the fan 15 via the heat shield plate 11 and the gap 14 between the bottom surfaces of the box frame 1. Due to this series of ventilation action and the heat dissipation action by the radiant heat of the heat shield plate, the temperature rise in the box is greatly reduced.

[0010]

As described above, according to the present invention, a heat shield plate also serving as a cover for the ventilation port is provided on the bottom surface of the box frame, the ventilation port on the bottom surface is enlarged, and the fan is installed inside the ventilation port on the side surface. In addition, by providing a filter on the cover of this ventilation port, effective ventilation is possible, temperature rise in the box is greatly reduced, and there is an effect that the box and storage equipment can be downsized. It also has the effect of improving the life.

[Brief description of drawings]

FIG. 1 is a side sectional view of an underfloor equipment storage box for an electric vehicle according to an embodiment of the present invention.

FIG. 2 is a front view of an underfloor equipment storage box for an electric vehicle according to an embodiment of the present invention.

FIG. 3 is a bottom view of an underfloor equipment storage box for an electric vehicle according to an embodiment of the present invention.

FIG. 4 is a side sectional view of a conventional underfloor device storage box for an electric vehicle.

FIG. 5 is a front view of a conventional under-floor device storage box for an electric vehicle.

FIG. 6 is a bottom view of a conventional underfloor device storage box for an electric vehicle.

FIG. 7 is a partial side sectional view showing a bottom surface portion of a conventional electric vehicle underfloor equipment storage box.

FIG. 8 is a partial bottom view showing a bottom portion of a conventional underfloor equipment storage box for an electric vehicle.

[Explanation of symbols]

 1 Box frame 2a, 2b Inspection cover 3a, 3b, 3c Heating device 4,5, Ventilation port 7 Cover 11 Heat shield 12 Seat 15 Fan 18 Filter 19 Ventilation window

Claims (3)

[Claims] 1. A device storage box that is installed under the floor of an electric vehicle and that stores devices, and a device storage box that has ventilation holes for circulating outside air and air inside the box on the bottom and side surfaces of the box body. An underfloor equipment storage box for an electric vehicle, characterized in that a heat shield plate is arranged on the bottom surface of the equipment storage box so as to face it at a predetermined interval and also serves as a cover for the ventilation opening on the bottom surface. 2. The underfloor equipment storage box for an electric vehicle according to claim 1, further comprising a fan provided inside the box so as to face the ventilation opening provided on the side surface and to promote ventilation. 3. The efficiency of the fan provided for facilitating ventilation in the box, by providing a ventilation window at a portion of the cover of the ventilation opening provided on the side surface facing the fan and providing a filter at the ventilation window portion. The underfloor equipment storage box for an electric vehicle according to claim 2, characterized in that it is designed so as not to go down.