JP2008275982A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce manufacturing cost of an image display device and to enable a user to accurately face the front of a display panel of the image display device. <P>SOLUTION: An image display device 1 includes an enclosure 3 having a display panel 2 disposed on a front surface thereof and a stand 5 rotatably supporting the enclosure 3 in a horizontal plane. Three pairs of alignment mirrors 10 are provided near both side parts of the enclosure 3 symmetrically with respect to a center part of the display panel 2. With respect to the alignment mirrors 10, a pair of corresponding right and left alignment mirrors are disposed so as to be inclined toward the center part of the display panel 2 at a prescribed angle to the front surface of the display panel 2. The user confirms himself or herself in one pair of alignment mirrors 10 approximately symmetrically, while turning the enclosure 3, whereby the display panel 2 can be positioned in front of the user. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video display device capable of changing the orientation of a display panel.

  2. Description of the Related Art Conventionally, there is a video display device configured such that a casing in which a display panel is arranged is rotatably supported by a stand, and the orientation of the display panel can be changed with respect to a user. In such a video display device, for example, when the user operates an operation button provided on the remote controller, the casing can be rotated with respect to the stand, and the display panel can be directed to the user. If the user is positioned within the rotation-corresponding range of the video display device, the user can properly view the image regardless of the position of the user himself / herself by accurately pointing the front of the display panel toward the user himself / herself.

  As such a video display device, for example, as disclosed in Patent Documents 1 to 4, it is possible to detect the direction of a signal transmitted from a remote controller and direct the screen in the direction in which the signal is transmitted. A video display device configured to be able to do so is shown. Such a device is convenient because it can automatically direct the screen to the user. However, in order to judge the direction of the signal transmitted from the remote controller, there is a problem that the manufacturing cost of the video display device is increased because a sensor having a complicated configuration or an expensive sensor is used or a complicated calculation is performed. .

Patent Document 5 discloses a video display device that is provided with a switch that can detect that the screen is in front, and can automatically return the screen to the front when the remote controller is operated. . However, Patent Document 5 does not show a configuration in which the front of the screen faces the user.
Japanese Patent Laid-Open No. 1-109869 JP-A-6-334944 JP-A-4-336784 Japanese Patent Laid-Open No. 2002-10101 JP 2005-106877 A

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a video display device that is low in manufacturing cost and that allows the user to turn the display panel to the front of the user accurately. .

  In order to achieve the above-mentioned object, the invention of claim 1 is provided at the center of the front surface of the housing, the display panel for displaying an image, and the housing rotatably supported in a substantially horizontal plane. In a video display device comprising: a stand; a rotation mechanism that rotates the casing with respect to the stand; and a remote controller provided with an operation button for driving the rotation mechanism. The display panel further includes at least a pair of left and right alignment mirrors disposed on both left and right sides of the display panel, and the pair of left and right alignment mirrors correspond to each other with respect to the center portion of the display panel. Symmetrically, both reflecting surfaces are arranged so as to incline toward the center side of the display panel by a predetermined angle with respect to the front surface of the display panel. By operating the tongue and driving the rotation mechanism to rotate the housing, the user's image located in front of the display panel is stopped at a position where the images are displayed substantially symmetrically on the alignment mirror. The display panel can be directed to the front of the user.

  According to a second aspect of the present invention, in the first aspect of the invention, a plurality of pairs of the alignment mirrors are provided, and each of the plurality of alignment mirrors has an angle with respect to the front surface of the display panel. Are arranged differently.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the angle of the alignment mirror with respect to the front surface of the display panel is a predetermined reference distance in which a distance between the user and the display panel is preset. Is set so that the angle of the user's own image is reflected at a predetermined position of the alignment mirror.

  According to a fourth aspect of the invention, in the first aspect of the invention, the alignment mirror is a concave mirror.

  According to the first aspect of the present invention, at least a pair of alignment mirrors are disposed on the left and right sides of the front surface of the housing, and the alignment mirrors are symmetrical with respect to the center of the display panel. Since it is arranged so as to be inclined to the side, the user can display the image by confirming that the user's own image is displayed substantially symmetrically on either pair of alignment mirrors while rotating the housing with respect to the stand. It can be confirmed that the panel is located in front of the user. Therefore, the display panel can be directed to the user accurately and easily without using a sensor having a complicated configuration.

  According to the invention of claim 2, since the plurality of pairs of alignment mirrors are arranged so that the angles with respect to the front of the display panel are different from those of the other pairs of alignment mirrors, the user can display his / her own display panel. According to the distance from the user, it can be confirmed that the user's own image is reflected on a suitable pair of alignment mirrors, and it can be confirmed that the display panel is positioned in front. Therefore, the user can point the display panel to the user accurately and easily in a wider range.

  According to the invention of claim 3, when the angle of the alignment mirror with respect to the front surface of the display panel is one of the predetermined reference distances in which the distance between the user and the display panel is set in advance, Since the image is arranged at an angle so that the image appears at a predetermined position of the alignment mirror, the user can confirm how far the display panel is from the display panel by using the alignment mirror to confirm that the display panel is located in front. It is possible to objectively grasp whether it is.

  According to the invention of claim 4, since the alignment mirror is a concave mirror, even when the user is close to the display panel or when the user is far from the display panel, the user's own image is displayed on the same alignment mirror. The panel can be directed to the front of the user. Therefore, the number of alignment mirrors can be reduced, and the manufacturing cost of the video display device can be further reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a video display apparatus according to this embodiment. The video display device 1 is, for example, a so-called television broadcast receiver, and displays an image, for example, a display panel 2 such as a liquid crystal panel or a plasma display panel, and a housing 3 on which the display panel 2 is disposed in front. Speakers 4 that are provided on the left and right sides of the housing 3 and generate sound, and a stand 5 that supports the housing 3 are provided. Below the display panel 2 of the housing 3, a receiving unit 6 a configured by a sensor that receives a signal from a remote controller 9 operated by a user, an operation switch 6 b for operating the video display device 1, and the like. Is provided. The housing | casing 3 is attached with respect to the stand 5 so that rotation in a substantially horizontal surface is possible. Inside the housing 3, a rotation mechanism 7 configured by a motor, gears, and the like that rotates the housing 3 with respect to the stand 5 is disposed.

  The remote controller 9 is provided with an operation button 9 a for controlling the operation of the video display device 1. By operating the operation button 9a, the user can select a television broadcast channel to be displayed on the display panel 2, adjust the volume of sound generated from the speaker 4, and the like. In the present embodiment, the operation button 9a is provided with a turn button 9b, and when the user operates the turn button 9b, the rotation mechanism 7 is driven, and the housing 3 is substantially omitted as indicated by an arrow in the figure. Rotates in a horizontal plane. As a result, the user can rotate the housing 3 from a position away from the video display device 1 so that the display panel 2 faces the front of the user himself, thereby making the display panel 2 easy to see.

  Here, in the present embodiment, alignment mirrors (hereinafter referred to as mirrors) 10 are provided on the left and right sides of the housing 3, respectively. In this video display device 1, the mirror 10 is composed of three pairs of left and right mirrors 11a, 11b, 12a, 12b, 13a, and 13b. Each of the mirrors 10 is disposed in front of the video display device 1 with a reflective surface facing. The pair of mirrors 11a and 11b corresponding to the left and right sides are symmetrical with respect to the central portion of the display panel 2 in the left-right direction, and both reflecting surfaces are inclined toward the central portion of the display panel 2 by a predetermined angle with respect to the front of the display panel 2. Are arranged as follows. Similarly to the mirrors 11a and 11b, the mirrors 12a and 12b and the mirrors 13a and 13b that are paired on the left and right are also provided symmetrically with each other.

  FIG. 2 shows the direction in which the mirror 10 is arranged. In the figure, for the sake of explanation, the mirrors 10 are shown to be shifted to the left and right so as not to overlap each other, but in reality, the mirrors 10 are arranged so as to be aligned in a substantially straight line in the vertical direction. . In the present embodiment, the angles of the mirrors 12 a and 12 b with respect to the front surface of the display panel 2 are larger than the angles of the mirrors 11 a and 11 b with respect to the front surface of the display panel 2. Further, the angles of the mirrors 13 a and 13 b with respect to the front surface of the display panel 2 are larger than the angles of the mirrors 12 a and 12 b with respect to the front surface of the display panel 2. The mirrors 11a and 11b are directed toward the user (indicated by U1 in the figure) assuming that the reflecting surfaces are at positions separated from the center of the display panel 2 by a length L1 (for example, 4 m). It is attached to the housing 3. Further, the mirrors 12a and 12b are provided to a user (indicated by U2 in the figure) assuming that the reflection surfaces thereof are at positions separated from the center of the display panel 2 by a length L2 (for example, 3 m). It is attached to the housing 3 so as to face. The mirrors 13a and 13b are provided to a user (indicated by U3 in the figure) on the assumption that the reflecting surfaces are at positions separated from the center of the display panel 2 by a length L3 (for example, 2 m). It is attached to the housing 3 so as to face. In other words, in the present embodiment, each mirror 10 has a predetermined reference distance indicated by the lengths L1, L2, and L3 in the drawing in which the distance between the user and the display panel 2 is set in advance with respect to the front surface of the display panel 2. The image of the user is arranged so as to be reflected in the approximate center of one of the pair of left and right mirrors 10. The mirrors 10 do not have to be arranged in the vertical direction with each other. For example, the mirrors 10 may be arranged in the substantially horizontal direction on the top of the housing 3.

  In this video display device 1, when the user rotates the housing 3, whether the display panel 2 is correctly facing the front of the user by checking the user's own image reflected on each mirror 10. Can be easily confirmed. The user roughly confirms the image reflected on each mirror 10 with the front of the display panel 2 facing himself / herself. Here, for example, if the user is at a position away from the display panel 2 by the length L2, the image of the user is reflected on the mirrors 12a and 12b. If the image of the user himself / herself reflected in the mirrors 12a and 12b is bilaterally symmetrical, the user determines that the display panel 2 is correctly facing the front of the user himself / herself. On the other hand, if the image of the user himself / herself reflected in the mirrors 12a and 12b does not appear to be bilaterally symmetric, the user determines that the display panel 2 is not correctly facing the front of the user himself / herself. In this case, the user rotates the casing 3 using the remote controller 9 or the like, and finely adjusts the orientation of the casing 3 so that the user's own image reflected on the mirrors 12a and 12b is symmetrical. The panel 2 can be accurately directed to the front of the user.

  Here, since three pairs of mirrors 10 are provided, the user is positioned in front of the display panel 2 using any suitable pair of mirrors 10 according to the distance from the display panel 2. Can be confirmed. Therefore, even if the user is far from the display panel 2 or close to the display panel 2, the user accurately points the display panel 2 to the front of the user in a wider range as compared with the case where the mirror 10 is a pair or two pairs. be able to. Further, each mirror 10 confirms the user's own image at the substantially central portion of each mirror 10 when the distance between the user and the display panel 2 is any one of the predetermined reference distances L1, L2, and L3. Therefore, the user roughly determines the mirror 10 used when confirming whether the display panel 2 is facing the front of the user and the position of the mirror 10 where the user's own image is reflected. It is possible to objectively grasp how far from the display panel 2 it is. Therefore, the user can appropriately objectively determine whether the distance between the user and the display panel 2 is not too close or too far to see the display panel 2.

  FIG. 3 shows a modification of the above embodiment. The video display device 31 according to this modification is different from the video display device 1 in that a pair of left and right alignment mirrors 30 a and 30 b are provided instead of the mirror 10. Regarding the video display device 31, the same components as those of the video display device 1 will be described with the same reference numerals.

  The mirrors 30a and 30b are concave mirrors, and are arranged symmetrically about the left and right central part of the display panel 2 in the same manner as the mirror 10 so that the reflection surface faces the front of the display panel 2. The user can confirm whether or not the display panel 2 is facing the front of the user by confirming the image of the user himself / herself reflected on the pair of mirrors 30a and 30b. That is, the user confirms his / her own images reflected on the left and right mirrors 30a and 30b, and determines that the display panel 2 faces the front of the user if the left and right mirrors 30a and 30b are substantially left and right objects. Can do.

  Here, since the video display device 31 uses the mirrors 30a and 30b which are concave mirrors, the user can confirm a wider range of images with the mirrors 30a and 30b than when the plane mirror is used. That is, even when the user is close to the display panel 2 or when the user is away from the display panel 2, the user's own image is projected on the same mirrors 30a and 30b, and the display panel 2 faces the front of the user. You can check whether or not. In this way, since it is possible to check whether the display panel 2 is facing the user's front face in such a wide range with a smaller number of mirrors than when using a plane mirror, the manufacturing cost of the video display device 31 is further reduced. can do.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible suitably in the range which does not change the meaning of invention. For example, the number of alignment mirrors that are plane mirrors may be one or two or more than three. In addition, a plurality of pairs of alignment mirrors using concave mirrors may be provided, which makes it possible to confirm whether or not the display panel is facing the front of the user in a wider range. Furthermore, the video display device is not limited to a television broadcast receiver, and may be a monitor that displays an image output from an external computer or the like, for example.

1 is a perspective view showing an example of a video display device according to an embodiment of the present invention. The top view which shows the positional relationship of the said video display apparatus and a user. The perspective view which shows the modification of the said video display apparatus.

Explanation of symbols

1,31 Video display device 2 Display panel 3 Housing 5 Stand 7 Rotating mechanism 9 Remote controller 9a Operation button 9b Turn button (operation button)
10, 11a, 11b, 12a, 12b, 13a, 13b, 30a, 30b Alignment mirror

Claims (4)

A housing,
A display panel arranged in the front center of the housing and displaying an image;
A stand that rotatably supports the housing in a substantially horizontal plane;
A rotation mechanism for rotating the housing relative to the stand;
In a video display device comprising a remote controller provided with an operation button for driving the rotation mechanism,
It is further provided with at least a pair of left and right alignment mirrors arranged on both left and right sides with respect to the display panel in front of the housing,
In the at least one pair of alignment mirrors, the pair of right and left corresponding to each other is symmetrical with respect to the central portion of the display panel, and both reflection surfaces are at the central portion side of the display panel by a predetermined angle with respect to the front of the display panel. It is arranged to lean on
A position in which a user drives the rotation mechanism while operating the operation button to rotate the housing, and images of users positioned in front of the display panel are reflected on the alignment mirrors substantially symmetrically with each other. By stopping the display, the display panel can be directed to the front of the user. A plurality of the alignment mirrors are provided,
The video display device according to claim 1, wherein each of the plurality of pairs of alignment mirrors is arranged such that an angle with respect to a front surface of the display panel is different from that of the other pairs of alignment mirrors.   The angle of the alignment mirror with respect to the front surface of the display panel is such that when the distance between the user and the display panel is any one of a predetermined reference distance set in advance, the user's own image is The video display device according to claim 1, wherein the video display device is set to have an angle reflected at a predetermined position. The video display device according to claim 1, wherein the alignment mirror is a concave mirror.

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