JP2003078268A - Exhauster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhauster that does not specify the installation orientation of equipment, does not give discomfort in air exhaust to an adjacent person, and does not block all air current paths and hence does not lose cooling efficiency even when walls, books, and the like in a room are close to the exhauster. SOLUTION: The exhauster comprises a concentric, cylindrical louver component (20) that is arranged in a mounting opening that is hollowed out in a circle, has a wind-controlling plate (21) that is inclined at a fixed angle to a cylindrical shaft, and can be rotated along the coaxial axis in the mounting opening. Additionally, the exhauster forms a projecting section (11) that projects from the outer wall surface of the mounting opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust device provided in a casing cover or the like for cooling the inside of a machine.

[0002]

2. Description of the Related Art An electrophotographic image forming apparatus is provided with a plurality of heat generating parts such as a power supply unit, a fixing unit, a writing unit and the like. For the purpose of cooling these heat generating portions, an electric fan or the like is used to discharge the residual heat inside the machine to the outside. However, the discharged air has a high temperature and is often accompanied by an offensive odor emitted from the transfer paper or toner, which gives a person near the air outlet an unpleasant feeling. In order to deal with such a defect, in many devices, it is general to arrange the exhaust port on the rear surface or the lower surface of the device. When there is a risk that the ventilation outlet will be located on the side due to restrictions such as the installation of peripherals, and there is a risk of causing discomfort to nearby people, measures such as setting the direction of the louver parts downward or backward are taken. In many cases.

However, in a small printer or the like, the printer is often placed in the vicinity of the user or in the vicinity of the user without distinction between front, rear, left and right because of the ease and convenience of the installation location, and the printer is fixed in a fixed direction. The exhausted airflow direction cannot cope with various installation environments.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, the present invention does not give the discomfort of exhaust air to nearby people without specifying the installation direction of the device, and also the wall of a room or a book. It is an object of the present invention to provide an exhaust device that does not impair the cooling efficiency without blocking all of the air flow path even when the device comes into close contact with the exhaust device, and an image forming apparatus having the above effects.

[0005]

In order to solve the above-mentioned problems, the present invention according to claim 1 comprises a concentric cylindrical louver part arranged inside a circularly cut-out mounting opening, and a cylindrical shaft. Equipped with a wind regulating plate that inclines at a constant angle to
Further, the exhaust device is characterized in that it is rotatable along a concentric axis of the mounting port. The present invention according to claim 2 is the exhaust device according to claim 1, characterized in that the exhaust device has a shape protruding from the outer wall surface of the mounting port. Claim 3
According to another aspect of the invention, there is provided an image forming apparatus including the exhaust device according to claim 1 in a part of a housing cover. According to a fourth aspect of the present invention, there is provided an image forming apparatus including the exhaust device according to the first or second aspect in a part of a housing cover.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing an exhaust device of the present invention, and FIG. 2 is a sectional view taken along the line AA 'in FIG. The louver component (20) is composed of a plurality of air conditioning plates (21) having a constant inclination (θ) with respect to the cylinder axis. The louver component (20) is arranged inside the mounting hole that is cut out in a circular shape, and is rotatable along the concentric axis of the mounting port. Further, as shown in FIG. 2, a fan (24) may be provided inside the exhaust device. With such a configuration, the exhaust can be performed more effectively.

FIG. 3 is an external perspective view of an image forming apparatus equipped with the exhaust device of the present invention, and FIG. 4 is a perspective view from the inside of the housing of the image forming apparatus. A part of the housing cover (10) has a shape projecting from the outer peripheral surface of the surrounding product, and a circular exhaust hole (12) is provided inside the projecting portion (11). A cylindrical louver component (20) is arranged in the exhaust hole (12). The rotating shaft (22) provided at the center of the columnar shape is inserted into the hole (13) on the side of the housing cover (10) to serve as an axis for rotating operation, and protrudes from the two air conditioner plates (21) on both sides. The claws (23a, 23b) guide the rotational movement. A rib (14) for forming a rotation center hole (13) is installed inside the exhaust hole (12) of the housing cover (10), and a base of the rib (14) and a claw (of the louver component (20) ( 23a, 23b), the louver component (20) stops rotating.

[0008]

As described above, according to the present invention as set forth in claim 1, it is possible to rotate the cylindrical louver component to change the exhaust direction so that the installation direction of the device is not specified. However, it is possible to provide an exhaust device that does not give a discomfort to the nearby people by only rotating the louver component. Further, according to the present invention as set forth in claim 2, by forming a shape protruding from the outer wall surface of the mounting opening,
Even when a wall of a room, a book, or the like is in close contact with the exhaust device, the exhaust device can be provided without blocking the entire airflow path and preventing a significant decrease in cooling efficiency. Further, according to the present invention described in claim 3 or 4, it is possible to provide an image forming apparatus having the same excellent effect as described above.

[Brief description of drawings]

FIG. 1 is a perspective view showing an exhaust device of the present invention.

FIG. 2 is a cross-sectional view showing an exhaust device of the present invention.

FIG. 3 is an external perspective view of an image forming apparatus using the exhaust device of the present invention.

FIG. 4 is a perspective view from the inside of the housing of the image forming apparatus of the present invention.

[Explanation of symbols]

10 Case cover 11 Projection 12 exhaust holes 13 Case cover side hole 14 ribs 20 Louver parts 21 Air conditioning board 22 rotation axis 23a, 23b nails 24 fans θ inclination

Claims (4)

[Claims] 1. A concentric cylindrical louver component disposed inside a circularly cut out mounting port, comprising a wind regulating plate inclined at a constant angle with respect to the cylindrical axis, and along a concentric circular axis of the mounting port. An exhaust device characterized by being rotatable. 2. The exhaust device according to claim 1, wherein the exhaust device has a shape protruding from the outer wall surface of the mounting port. 3. An image forming apparatus comprising the exhaust device according to claim 1 in a part of a housing cover. 4. An image forming apparatus comprising the exhaust device according to claim 1 or 2 in a part of a housing cover.