JPH08104128A - Ventilating device for operator's cab in construction machinery - Google Patents

Abstract

PURPOSE: To enable the drive of a ventilating fan under a fine weather for a long time, by driving the ventilating fan by the generated electric power of a solar battery which is attached to the outer surface of a sunshade. CONSTITUTION: A ventilating device is arranged inside the window glass of the operator's cab 1 of a construction machine, and a solar battery 6 is installed on the outer surface of a sunshade 2 for shielding the solar beam irradiated inside the driver's room 1, and a ventilating fan 3 is driven by the generated electric power. Accordingly, under the fine weather where the ventilatoon of air inside the operator's cab 1 is necessary the ventilating fan 3 can be driven for a long time. A battery performs electric power storage of the generated electric power of the solar battery 6, and the ventilating fan 3 is driven by the electric power stored in the battery.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator attached to a driver's cab of a construction machine such as a mobile crane.

[0002]

2. Description of the Related Art Construction machines such as mobile cranes are usually left outdoors when they are not in use, in which case the glass windows in the driver's cab are closed to prevent theft. . If the construction machine is left in such a state in the summer, the temperature inside the cab will rise due to the sunlight incident from the glass window, and the air inside the cab will be ventilated when using the construction machine to lower the room temperature. Takes time. Further, it takes time to reduce the temperature in the cab to a comfortable temperature even when the cooling device or the ventilation device is operated in using the construction machine.

In order to deal with this problem, a sunshade is arranged inside the glass window to block the sunlight entering the driver's cab, and a ventilation fan driven by a battery as a power source is installed in an appropriate place in the driver's cab. There is a ventilating fan that ventilates the air in the cab. In this case, the awning is a fixed type awning in which elongated flat plates are arranged at a predetermined interval in a laminated manner. This type of awning is used for a rear visual confirmation window of a driver's cab. A sheet-shaped awning, which is pulled out as necessary to cover the inside of the window glass. This type of awning is used for the skylight in the cab.

This type of ventilation device prevents the sunlight from entering through the window glass and drives the ventilation fan when the construction machine with the window glass in the driver's cab is left outdoors in the summer, while driving the ventilation fan. It is used to ventilate the air.

[0005]

However, in the conventional ventilation device described above, the battery as the drive power source of the ventilation fan is
Since the battery is charged only by the electric power generated by the generator driven by the engine of the construction machine, the battery capacity is not available when the construction machine is left outdoors (the engine is stopped and the generator is not driven). Therefore, there was a problem that the ventilation fan could not be driven for a long time. A ventilation device for a construction machine according to the present invention solves the problems of the conventional ventilation device described above, and provides a ventilation device that can drive a ventilation fan for a long time under fine weather that requires ventilation of air in a driver's cab. It is the one we are trying to provide.

[0006]

In order to achieve the above-mentioned object, a ventilation device for a cab of a construction machine according to the present invention is constructed as follows. It is placed inside the glass window of the operator's cab of construction machinery such as mobile cranes, and the solar cell attached to the outer surface of the awning that blocks the sunlight that passes through the glass window and enters the operator's cab, and is placed in the proper place of the construction equipment. A ventilation device for a cab of a construction machine, comprising: a ventilation fan that is driven by generated power from a solar cell to ventilate air in the cab.

[0007]

According to the above construction, the ventilation fan can be driven by the electric power generated by the solar cell attached to the outer surface of the awning, so that the ventilation fan can be driven for a long time in fine weather which requires ventilation of the air in the cab. You can do it.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case in which an embodiment of a ventilation device for a cab of a construction machine according to the present invention is applied to a mobile crane will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a cab of a mobile crane. Reference numeral 2 is an awning arranged inside the window glass of the cab 1. In this example, the awning 2 is a fixed type in which elongated flat plates 2a, 2a ... Are arranged in a laminated shape at a predetermined interval, and is arranged inside the window glass of the rear visual recognition window 1a of the cab 1. Showing things.
3 is a ventilation fan for ventilating the air in the cab 1, and 5 is
It is a control unit which is interposed in an electric circuit to the ventilation fan 3 and controls the drive stop of the ventilation fan 3. Reference numeral 6 denotes a solar cell, which in this example is composed of solar cells 6a, 6a ... Attached to the outer surfaces of the flat plates 2a, 2a.

In the above embodiment, the awning 2 is a fixed type in which elongated flat plates 2a, 2a ... Are arranged in a laminated manner at a predetermined interval, and the inside of the window glass of the rear visual check window 1a of the cab 1 is used. 2 and the solar cell 6 is attached to each of the flat plates 2a, 2a of the awning 2, the awning 2 and the solar cell 6 attached to the awning 2 are shown in FIG. It may be configured as shown. That is, FIG.
In FIG. 2, the awning 2 is a sheet-shaped awning that can be pulled out, and is pulled out as necessary to cover the inside of the window glass. The awning 1b of the cab 1 or the awning 1b and the front visual confirmation window 1c. It is placed inside the glass. The solar cell 6 is made of a flexible material attached to the outer surface of the sheet-shaped awning 2 so as not to hinder the drawing-up and winding of the sheet-shaped awning 2.

The ventilation device for the cab of the construction machine of the present invention is
Since the ventilation fan 3 can be driven by the electric power generated by the solar cell 6 attached to the outer surface of the awning 2, the ventilation fan 3 can be driven for a long time under fine weather that requires ventilation of the air in the cab 1.

In the above embodiment, the ventilation fan 3 is directly driven by the power generated by the solar cell 6, but the power generated by the solar cell 6 is stored in the battery 4 as shown in FIG. The ventilation fan 3 may be driven by the electric power stored in 4.

The battery 4 may store not only the power generated by the solar cell 6 but also the power generated by a generator driven by the engine of the construction machine.

Further, although the above-mentioned embodiment has been described as being applied to the mobile crane, it is needless to say that it is applied as a ventilation device for the cab of other construction machines.

[0014]

As described above, the ventilation device for the cab of the construction machine according to the present invention has an extremely simple structure, but the fan can be driven for a long time under fine weather that requires ventilation of the air in the cab. The effect is great.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of a ventilation device for a driver's cab of a construction machine according to the present invention.

FIG. 2 is an explanatory view of another embodiment of the ventilation device for the cab of the construction machine according to the present invention.

FIG. 3 is an explanatory diagram of a development example of a ventilation device for a driver's cab of a construction machine according to the present invention.

[Description of sign]

1; driver's cab, 1a; rear view window, 1b; skylight, 2 (2
a, 2a ...); Awning, 3; Ventilation fan, 4; Battery,
5; control unit, 6 (6a, 6a ...); solar cell,

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H02N 6/00

Claims (1)

[Claims] 1. A cab 1 for a construction machine such as a mobile crane
The solar cell 6 attached to the outer surface of the awning 2 which is arranged inside the glass window of the sunshade and blocks the sunlight which passes through the glass window and enters the cab 1 and the solar cell 6 which is arranged at an appropriate place of the construction machine. A ventilation device for a cab of a construction machine, comprising: a ventilation fan 3 that is driven by generated power to ventilate the air in the cab 1.