JP2003202631A - Video display with variable exhausting direction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adjust an exhausting direction by providing a plurality of guides for positioning the exhausting direction in the case of exhausting radiated hot air from a fan provided inside of a casing to outside and controlling these guides in a video display such as a liquid crystal projector. <P>SOLUTION: This system comprises a cooling apparatus such as the fan for cooling and heat-radiating a heating area inside of the apparatus, the plurality of exhausting guides for fixing the exhausting direction from the fan, a controller for controlling opening and closing of these guides, an operation panel provided for operating from a casing side for being linked with the controller, and a remote apparatus such as a remote controller provided for performing remote control operation. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention cools heat from a heat generating area inside a video display device housing such as a liquid crystal projector by a cooling device such as a fan, and exhausts air heated by the cooling device to the outside of the housing. It relates to the exhaust method.

[0002]

2. Description of the Related Art For example, in the conventional technique found in Japanese Patent Laid-Open No. 2000-66306, since heat is generated by a light beam emitted from a light source such as a lamp inside a projector, cooling is performed by using an air-cooling type fan driven by a motor. The air heated by this was exhausted to the outside by using an exhaust port provided at the rear of the fan and an exhaust direction adjusting duct whose exhaust direction can be adjusted. Since the exhaust direction adjusting duct is formed from a bellows or the like, the user was able to adjust the exhaust direction in any direction, but again, it was externally attached to the image display device housing. It was uncomfortable in terms of design and portability.

Also, in order to reduce noise by using a duct, it must be provided with an opening cross section of a certain size, which is a contradictory aspect to the compactness of the device.

In addition, it is possible to provide a sound absorbing material inside the duct to further reduce the noise, but it is disadvantageous in terms of cost, and thus the superiority is not taken into consideration in terms of cost. It was

[0005]

The present invention has been conceived in view of these problems, and its main purpose is to optimize the exhaust air from the fan mounted in the image display device. Provide a video display device that allows the user to set the exhaust direction in any direction even when the video display device is installed in a wide variety of places, and that has more freedom and emphasizes compactness and design. It is to be.

[0006]

In order to achieve the above-mentioned object, in the image display apparatus with variable exhaust direction according to the present invention, a heat generating member such as a light source inside the image display apparatus housing is cooled. Cooling means having the ability to exhaust air containing heat to the outside, exhaust guide means for controlling the direction of the air exhausted from the cooling means, and the operation of these exhaust guide means to control the exhaust direction. A means that can be switched at any time is provided.

With the construction of these means, the direction of exhaust from the cooling means was originally fixed, whereas
The image display device is provided with, for example, a plurality of exhaust guides, and it is possible to freely adjust the exhaust direction by opening and closing these guides. Therefore, regardless of the installation conditions, the exhaust from the fan can always be optimally performed.

Further, by controlling the exhaust direction by this, the user is not exposed to the air exhausted from the exhaust port of the fan, so that the user does not feel uncomfortable during use.

In addition to the opening / closing operation of the exhaust guide means, a short-distance operation means such as an operation panel is provided so that the main basic operation of the image display device can be performed from the apparatus housing side. By providing remote operation means such as a remote controller so that each operation to be performed can be performed from a long distance, it is easy to use.

When the exhaust direction is set / adjusted by pressing a button on the remote control or the operation panel, the exhaust direction is displayed on a screen enlarged and projected so that the exhaust direction can be checked at a glance.

When the exhaust direction is set and adjusted by pressing a button on the remote controller or the operation panel, a display means is provided near the operation panel of the image display device to display the exhaust direction.

The image display device is provided with a rotation support member and an opening / closing mechanism so that the exhaust guide can be opened and closed very manually rather than being controlled by the short distance operation and remote operation means.

(Operation) Therefore, according to claim 1 of the present invention, the exhaust direction from the fan is not fixed in one direction by the method of providing the exhaust port as in the conventional case, but rather the exhaust port is not fixed. Equipped with exhaust guides that guide the user, and by opening and closing these guides at any time, the user can switch the exhaust in any direction. Since it is exposed to the air containing heat exhausted from the mouth to a minimum, there is no discomfort.

According to the second aspect of the present invention, the short-distance operation means such as the operation panel and the remote operation means such as the remote controller are provided with the function of controlling the exhaust guide, as in the conventional image display apparatus. Allows you to switch exhaust guides as easily as before without learning a completely new method of operation.

According to the third aspect of the present invention, when the exhaust direction is set and adjusted by the short distance and the remote operation, the operation contents and the exhaust direction are displayed on the screen enlarged and projected from the projection lens of the image display device on the screen. By displaying, the operation of the exhaust guide is easy and easy to use.

According to the fourth aspect of the present invention, when the exhaust direction is set and adjusted by the short distance and the remote operation, these operations are performed on the display panel near the operation panel provided at the predetermined position of the image display device. By displaying the content and the exhaust direction, it is possible to provide an exhaust guide that is easier and easier to understand.

According to the fifth aspect of the present invention, the image display device is provided with an opening / closing mechanism such as a rotation support member and a release button so as to interlock with the exhaust guide, so that the exhaust guide can be opened and closed very manually. It can be carried out.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described in detail below with reference to FIGS. 1A and 1B are perspective views showing the appearance of a video display device 1 such as a conventional liquid crystal projector, FIG. 1A is a front appearance view, and FIG. 1B is a rear appearance view.

A main image display device cabinet 2 formed in a box shape as a main device configuration, and a basic ON / OFF operation of a power source in the image display device 1, a VOLUM
An operation panel 3 for performing operations such as E, focus, and fine adjustment of an image, a rear remote control receiver 4 for reading an infrared signal from the rear, and a projection lens 5 for enlarging and projecting an image input from a device such as a PC. A front remote control receiver 6 that reads an infrared signal from the front, an adjuster 7 that adjusts the height of the image display device 1 in the projection direction, and a radiant air from a fan mounted inside the image display device 1 is exhausted to the outside. The exhaust port 8 for

FIG. 2 shows an image display device 9 provided with a member for controlling the exhaust direction in contrast to the conventional image display device 1 as described above. , 13, 14 are provided on the bottom surface of the housing.

These exhaust guides can be opened and closed at any time, and in FIG.
Although the radiant air from the fan flows in four directions when 2, 13, and 14 are in the OPEN state, for example, it is opened by pressing the release button 30 provided in each exhaust guide 11, 12, 13, and 14. be able to.

When CLOSE is performed, the user manually pushes the exhaust guide toward the surface of the housing to move the front.
6, rear 31, left 32, right 10, or front and back (16, 3
It is possible to switch the exhaust direction to 1), left / right (32, 10), front left (16, 32), front right (16, 10), or the like.

If further added, the exhaust guides 11, 12, 1
The opening / closing operation of 3 and 14 may not be performed manually, and may be automatically performed by, for example, pressing a predetermined button on the operation panel 3 provided on the upper surface of the image display device housing 2. It should be noted that the display panel 35 on the operation panel 3 may display so that the user can confirm which direction the exhaust direction is.

FIG. 3 shows the direction in which the radiant air 16 from the fan 15 flows, and the exhaust guide 12 is CLOSE.
(The exhaust guides 11 and 14 in the right and left directions are also C
LOSE) represents an example in which the radiant air 16 is made to flow toward the front of the image display device 1.

When all the exhaust guides are in the CLOSEd state, the bottom surface of the housing becomes the original flat shape, so that the appearance does not feel uncomfortable, and by doing so, the image display device 1 is not yet installed. It is possible to prevent dust from entering during use.

In addition, for example, when the internal control device recognizes that the power source of the image display device 1 has been turned off, and the cooling device such as the fan 15 is stopped later to enter the STANDBY state, the gas is automatically exhausted. Guides 11, 12, 13,
You may control so that 14 may be closed.

FIG. 4 shows the exhaust guide 1 using the remote controller 18.
An example of remote control of 1, 12, 13, and 14 is shown, and the infrared signal 19 emitted from the signal transmission unit 20 of the remote controller 18 is received by the signal reception unit 21 provided on the video display device 17 side, and these signals are received. Is recognized by the internal control device, and the exhaust guides 11, 12, 13, 14 are opened and closed accordingly.

In FIG. 4, the right and left exhaust guides 1 are shown.
Although not shown in the drawings, 1 and 14 are assumed to be operated in the same manner as the front and rear exhaust guides 13 and 12. With such a configuration, the user can easily switch the exhaust guides 11, 12, 13, 14 by using a remote control device such as a remote controller 18 provided separately from the main body of the image display device 17. .

FIG. 5 shows an image display device 22 in which the air can be exhausted from the fan more effectively than the conventional image display device 1 and the exhaust direction can be switched. An example in which an image is enlarged and projected on a surface is shown.

FIG. 6 shows a screen 24 which is an auxiliary display when the exhaust direction is switched. By displaying the screen in which the exhaust direction can be seen at a glance, the user can recognize the exhaust direction more clearly. It is possible to change it at any time by operating the remote controller 18 or the operation panel 3 to move the pointer such as the arrow 25 and clicking the icon 26 on the screen 24.

(Second Embodiment) This embodiment is shown in FIG. In FIG. 2, the exhaust guides 11, 12, 13, and 14 are designed so that they can be operated in the front-rear, left-right directions.
For example, the exhaust direction can be adjusted by connecting the vertical variable exhaust guide 28 that can slide in the vertical direction as shown in FIG. 7 and the duct 29 when the exhaust guide 28 slides downward. .

[0032]

As described above, according to the first aspect of the present invention.
According to the above, an air-cooling cooling device such as a fan is mounted in a heat generation area inside a video display device such as a liquid crystal projector, and exhaust guide means for controlling the exhaust direction when exhausting the radiated air after cooling is provided, The user can switch the exhaust in any direction by opening and closing the exhaust guide means.

Therefore, by controlling the exhaust direction, a more flexible installation method can be obtained without being restricted to the installation location, and the cooling / heat radiation performance can always be maintained in an optimum state. .

According to the second aspect of the present invention, for example, the power is turned on / off, the speaker VOLUME is adjusted, the focal length is adjusted by the operation panel provided on the housing surface of the image display device such as the conventional liquid crystal projector. However, in addition to this, by newly installing a button etc. to control the exhaust direction on the operation panel so that the exhaust direction can be adjusted, it is possible to change the operation method with conventional buttons without changing. You can easily switch the exhaust direction.

In addition, the remote controller found when performing remote control on a conventional image display device such as a liquid crystal projector is used to perform adjustment and setting of the image display device. However, such a difficult skill is required. By performing the method in an unnecessary manner (adjusting the exhaust direction by remote button operation from the remote controller), there is an effect that the operation is not troublesome and is more convenient.

According to the third aspect of the present invention, when the exhaust direction is switched on the operation panel and the remote controller,
By displaying the operation details and the exhaust direction before / after the change on a screen that is enlarged and projected on the projection display surface such as a screen, the user can perform each operation easily and easily, and the exhaust direction can be easily understood visually. There is an effect that can be confirmed.

According to the fourth aspect of the present invention, when the exhaust direction is switched on the operation panel and the remote controller,
By displaying the operation contents and the exhaust direction before / after the change on the display panel provided near the operation panel of the video display device, the user can easily and easily perform each operation, and the exhaust gas can be easily understood visually. The effect is that the direction can be confirmed.

According to the fifth aspect of the present invention, it is possible to open and close the exhaust guide very manually by providing the image display device with the opening and closing mechanism such as the rotation support member and the release button. Such opening and closing is effective in preventing the entry of dust from the outside when not in use.

[Brief description of drawings]

FIG. 1A is a front external view of a video display device such as a conventional liquid crystal projector according to an embodiment of the present invention, and particularly shows a rough front device configuration. (B) It is a rear external view of a video display device such as a conventional liquid crystal projector according to an embodiment of the present invention, and particularly shows a rough rear device configuration.

FIG. 2 is a view of the image display device according to the first embodiment of the present invention as seen from the direction of the arrow, and shows a configuration diagram including a plurality of exhaust guides.

FIG. 3 is a configuration diagram showing an exhaust adjustment method using an exhaust guide according to a first embodiment of the present invention.

FIG. 4 is a configuration diagram showing an example of remotely adjusting the exhaust guide according to the first embodiment of the present invention.

FIG. 5 is a device usage diagram for enlarging and projecting an image using an image display device such as a liquid crystal projector according to the first embodiment of the present invention.

[Fig. 6] Fig. 6 is a graph showing the exhaust control of Example 1 of the present invention.
An example of the image displayed on the screen etc. which the image was enlarged and projected is shown.

FIG. 7 is a configuration diagram showing a display form of the operation panel according to the first embodiment of the present invention.

FIG. 8 is a configuration diagram showing a method of adjusting exhaust gas of an image display device according to a second embodiment of the present invention.

[Explanation of symbols]

1 Conventional LCD projector 2 projector housing 3 Operation panel 4 Rear remote control receiver 5 Projection lens 6 Front remote control receiver 7 Adjuster 8 exhaust port 9 Video display device body (Example 1) 10 Radiant air 11 Exhaust guide (to the right) 12 Exhaust guide (rear direction) 13 Exhaust guide (forward direction) 14 Exhaust guide (left direction) 15 fans 16 Radiant air 17 Image display device body (Example 1) 18 remote control 19 infrared signal 20 Signal transmitter 21 signal receiver 22 Image display device body (Example 1) 23 screen 24 screens 25 pointer 26 icons 27 Video display unit 28 Vertical exhaust guide 29 Duct 3: Operation panel 30 release button 31 Radiant air 32 Radiant air 33 Radiant air 34 Radiant air 35 display panel

Claims (5)

[Claims] 1. In an image display device for reading an image sent from a device such as a PC and enlarging and projecting it on a screen, air heated by a heat source inside the image display device is exhausted to the outside or air from the outside is discharged. Cooling means having a function of taking in air and introducing it into the image display device;
Exhaust guide means for controlling the exhaust direction from the cooling means,
An image display device with variable exhaust direction, comprising means capable of controlling the operation of these exhaust guide means to switch the exhaust direction. 2. A power source is turned on / off in the video display device.
A short-distance operation means such as an operation panel is provided so that basic operations such as OFF, VOLUME adjustment of the speaker, zooming, and opening / closing operation of the exhaust guide means can be performed from the casing of the image display device, and each operation performed from the short-distance operation means. 2. The image display device with variable exhaust direction according to claim 1, further comprising remote control means such as a remote controller that can be operated over a long distance. 3. The exhaust guide means displays the exhaust direction on a screen projected on the screen when the exhaust direction is set / adjusted by the short-distance operation means or the remote operation means. The image display device with variable exhaust direction according to claim 2, characterized in that 4. The exhaust guide means, when the exhaust direction is set / adjusted by the short-distance operation means or the remote operation means, sets the exhaust direction on a display means provided near an operation panel of the image display device. The image display device with variable exhaust direction according to claim 2, wherein the image is displayed to the user for recognition. 5. The image display device has an opening / closing mechanism including a rotation supporting member and a release button, and the opening / closing can be performed by interlocking with the exhaust guide means and these mechanisms. The image display device according to claim 1, wherein the exhaust direction is variable.