JP2006079032A - Projector device - Google Patents

Abstract

The present invention relates to a projector apparatus having an exhaust fan, and provides a projector apparatus that can be manufactured at low cost without impairing the degree of freedom of design.
The present invention includes a main body case, a projection lens provided so as to be exposed from the front surface of the main body case, and an exhaust opening provided in the main body case. In the projector device, a waste fan unit composed of a separately formed wind guide body having a light shielding function, an exhaust fan, and a frame body in which the wind guide body and the exhaust fan are incorporated is opposed to the exhaust opening. It is a projector apparatus characterized by being provided.
[Selection] Figure 1

Description

The present invention relates to a projector apparatus, and more particularly to a projector with reduced manufacturing costs.

Usually, since a projector apparatus uses a high-output light source, it is operated while cooling using a cooling fan.
For this reason, it is necessary to exhaust the exhaust air after cooling, but it is desirable that this exhaust air is exhausted from the front of the projector where the operator is not located.
However, when this exhaust is exhausted to a region through which the projection light passes, fluctuations in the projected image occur.
In order to solve this problem, there is a solution to the problem by exhausting the exhaust air in a direction away from the projection area.
Conventionally, the exhaust structure has been redesigned for each projector device model. In particular, in recent years, it has become important to design so that light from the light source does not leak from the projector body.

JP-A-10-186546 JP-A-10-90794 JP 2002-244213

In the above-mentioned Patent Document 1, a technique is disclosed in which the exhaust fan is inclined to exhaust the exhaust air away from the projection area.
In the above-mentioned Patent Document 2, a technique is disclosed in which the slit shape of the exhaust port of the case is inclined to exhaust the exhaust air in a direction away from the projection region. In the above-mentioned Patent Document 3, as a conventional exhaust port shape, a technique in which a plurality of longitudinal slits are provided as an exhaust port of a case is disclosed.
In Patent Document 3, the exhaust port is movably provided.
However, such a structure is a restriction on the design design of the projector apparatus main body.

For example, when the fan is inclined and arranged as in the cited document 1, a dead space is generated, the projector apparatus main body becomes larger than necessary, and the storage efficiency of the projector apparatus main body decreases.
Further, when the exhaust ports are provided vertically as in Patent Documents 2 and 3, the smartness is lost because a large number of short slits are formed in the horizontally long main body.
Furthermore, if the shape of the slit is inclined at an angle in order to deflect the exhaust gas in an oblique direction, the design beauty is impaired.
Further, the conventional projector device of the applicant of the present application, in which a vertically long louver 10 for deflecting exhaust air is integrally formed in a horizontally long exhaust slit 7 of a front case 6 made of a resin material as shown in FIG. In the meantime, there was an opinion that the lattice-shaped openings did not look good.

The present invention was created to solve such a problem, and is a projector that can reduce the manufacturing cost without sacrificing the degree of freedom in designing the design of the main body of the apparatus and with high versatility. A device is provided.

In order to solve the above problems, the present invention provides a main body case, a projection lens provided so as to be exposed from the front surface of the main body case, and an exhaust opening provided in the main body case. A waste fan unit comprising a separate air guide body having a light shielding function, an exhaust fan, and a frame body in which the air guide body and the exhaust fan are incorporated. The projector device is provided opposite to the projector.

According to a second aspect of the present invention, the exhaust fan is composed of a plurality of fans having different sizes, and the exhaust surface constitutes the same surface without a step when incorporated in the frame. It is a feature.

According to the present invention, light leakage is improved, and the use of a unitized exhaust fan makes it possible to reduce manufacturing costs.
In addition, the design in the main body is not restricted by making the surface in the exhaust emission direction a flat surface without a step and the surface in the intake direction in accordance with the optical device.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view showing an embodiment of the present invention, and shows a structure in which the front case is removed from the main body case.
Housed in the main body case 1 are a light source and optical components (not shown), a power supply board, a main circuit board that controls input / output of image data, projection image formation, and the like, and a cooling fan.
Reference numeral 2 denotes a projection lens which is exposed from the front surface of the main body case 1 so as to project an enlarged image.
Reference numeral 3 denotes an exhaust fan unit, which is provided on the front surface of the main body case at a position separated from the projection lens.
The exhaust fan unit 3 will be described in detail later with reference to FIG.

Reference numeral 4 denotes a front case, and a plurality of horizontally elongated slits 5 for exhaust are arranged in the vertical direction.
Further, although not shown, the back side of the front case 4 is elastically pressed and held by the front case 4 by a sponge-like cushioning material provided on the surface of the exhaust fan 3. Even if it occurs, the generation of noise is prevented.

The front case 4 is provided with a projection lens arrangement portion 8 so that the projection lens 2 is exposed.
The projection lens placement unit 6 has a notch at the top, but the side surface of the projection lens 2 is exposed from the notch, and the side surface of the projection lens 2 is rotated. It is possible to focus the projection lens and to enlarge or reduce the projection image.

Reference numeral 7 denotes an operation unit on which a main switch for operating the projector device, a switch for correcting the position of the projected image, and the like are arranged.
Reference numeral 8 denotes a light source arrangement unit. Since this part releases most heat, it is cooled by the cooling air, and the heated exhaust air is exhausted to the outside of the main body 1 through the exhaust slit 5 by the exhaust fan unit 3 described above.

Although not shown in the drawing, an input / output terminal for a projected image, a card slot, an infrared light receiving unit for receiving an operation command signal from a remote controller, and the like are provided on the rear surface of the main body.
An opening for taking in cooling air is provided on the side of the main body.
Also, on the bottom surface of the main body, there are provided a lid for taking in and out the light source unit and legs for adjusting the vertical projection position.

Next, FIG. 1 shows details of the exhaust fan unit 3.
Reference numeral 10 denotes a wind guide body made of a resin material. The shape seen from above is a substantially U-shape, and a plurality of louver bodies 11 extending in a plate shape are provided below.
This is connected by a horizontal connecting portion 12 at the center.
As can be understood from the drawing, the air guide body 10 has a simple structure that can be manufactured by a mold that is divided into upper and lower parts.
Reference numeral 13 denotes an exhaust fan, which includes two fans 13a and 13b having the same height and different widths and depths.
Reference numeral 14 denotes a frame body, and the air guide body 10 and the exhaust fan 13 are integrally configured by the frame body 14.

Note that the air guide body 10 is provided with a step so as to be separated from the light source and the optical component in the main body and not to cause a dead space.
Further, although the exhaust fans 13a and 13b having different sizes are used, this corresponds to the step of the air guide body, and no step is generated on the front surface from which the exhaust air is discharged, and the front surface is the same surface. It is what I did.
The large fan exhausts heat from the light source, and the small fan is used to exhaust heat from the optical components.
In addition, fixing screw holes and the like are provided at the four corners of the front surface of the exhaust fan, and are screwed to the four corners of the frame body.

Since the air guide body 10 and the exhaust fan 13 manufactured separately are integrally formed by the frame body 14, the manufacture of the air guide body 10 is facilitated, and the assembly process as the projector device is also facilitated.
In addition, since a unit in which the exhaust function and the light shielding function are integrated is used, handling is easy, and there is no restriction on the design of the main unit.

A second embodiment is shown in FIG.
This is a shape in which the above-mentioned cuboid-shaped louver body 11 is separated, and the air guide body 10 composed only of the louver body inclined in one direction is housed in the frame body 14 of the exhaust fan unit and inclined to the other As a separate unit, the second air guide body 15 composed of the louver body is arranged between the exhaust fan unit and the front case.
The louver body 16 of the second air guide body 15 is composed of a plurality of inclined plates (fins) inclined so as to release the exhaust air in a direction away from the projection lens of the projector device, and is housed in the exhaust fan unit. The louver body of the air guide body is composed of a plurality of inclined plates (fins) that are inclined so as to be emitted in a direction approaching the projection lens of the projector device.
This is to prevent the projection image from being fluctuated by the exhaust air and to completely shield the light.
When the louver body 11 and the second louver body 16 are inclined plates (fins) inclined in the same direction, it was confirmed that light leaks in the inclined direction. For this reason, it is comprised by the inclination board (fin) inclined in the mutually opposite direction.
With this structure, complete light shielding is possible.

In the air guide body 10 accommodated in the exhaust fan unit of the present embodiment, the connecting portions 12 of the louver body 11 are provided at both upper and lower ends of the louver body 11. This is because the louver body 11 in the first embodiment has a dogleg shape, and therefore it is necessary to use a die that is divided in the vertical direction, so the connecting portion 12 must be provided at the center of the louver body 11. On the other hand, since the louver body 11 of this embodiment is inclined in one direction rather than in the shape of a letter, the air guide body 10 can be manufactured with a mold that is divided in this inclined direction.

The present invention is not limited to the above-described embodiments, and in particular, the material and shape of the exhaust fan unit, the shape, number, and structure of the louver body 11 are not limited. For example, one exhaust fan or a plurality of fans having the same shape may be used.
In addition, the louver body tilt angle may be set to an optimum value within a range of 90 degrees to 180 degrees, for example, depending on the size of the projector apparatus and the distance between the projection lens and the disposal opening.
Further, the structure of the front case and the shape of the slit opening are not limited to the present embodiment.

The present invention can be used for a liquid crystal projector using an exhaust fan, a digital micromirror projector, or the like.

FIG. 1 is an exploded perspective view showing a configuration of an exhaust fan unit according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the main configuration of the embodiment of the present invention. FIG. 3 is an exploded perspective view showing the configuration of the exhaust fan unit according to the second embodiment of the present invention.

Explanation of symbols

1: Body case 3: Exhaust fan unit 4: Front case 10: Air guide body 13: Exhaust fan 14: Frame

Claims (5)

In a projector apparatus having a main body case, a projection lens provided so as to be exposed from the front surface of the main body case, and an exhaust opening provided in the main body case, a wind guide body having a light shielding function configured separately. And a waste fan unit comprising an exhaust fan and a frame body in which the air guide body and the exhaust fan are incorporated. The projector device is provided to face the exhaust opening. 2. The projector device according to claim 1, wherein the exhaust fan is composed of a plurality of fans of different sizes, and the exhaust surface forms the same surface with no step when incorporated in the frame. . 2. The projector apparatus according to claim 1, wherein the air guide body has a substantially U-shaped upper cross-section, and a plurality of plates extending in the vertical direction are aligned in the horizontal direction. The projector device according to claim 1, wherein the frame body has a constant height and a frame body having a step shape in the depth direction. Between the main body exhaust opening and the exhaust fan unit, there is a second air guide body having an inclined plate for deflecting the exhaust air in a direction away from the projection lens. 2. The projector apparatus according to claim 1, further comprising an inclined plate for deflecting the wind in a direction approaching the projection lens.

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