JP5254485B2 - Display device - Google Patents

Abstract

When this display device detects, by means of a magnetic sensor, the position of a magnet provided on an attachment member and the signal strength of the sensor signal output by the magnetic sensor is a prescribed value or greater (S12: YES), the display device acquires the three-dimensional coordinates of the magnet (S14). Furthermore, guidance display is performed according to the three-dimensional coordinates acquired (S15), and whether or not the display device is in a wall hanging position is determined (S16). When the display device is in the wall hanging position (S16: YES), a display instructing attachment to the attachment member is carried out (S17).

Description

  The present invention relates to a display device that can be attached to a mounting member.

  Thin display devices including a liquid crystal television receiver, a plasma television receiver, and the like include a stationary type that is installed on a floor surface or a rack by a stand, and a wall-mounted type that is attached to a wall body by a wall-hanging bracket.

  The stationary type is configured to prevent the display device from tipping in the front-rear direction using a stand with a relatively long front-rear span, which hinders wall shifting and creates a relatively wide space between the wall and the wall. Will occur.

  The wall-mounted type has a frame-shaped wall-mounting bracket attached to the wall surface, a hanging bracket is attached to the rear surface of the display device, and the hanging bracket is hung on the wall-mounting bracket. It has become. As the wall mounting bracket, for example, those disclosed in Patent Documents 1 and 2 are known.

Japanese Patent No. 4282010 JP 2004-305723 A

  When hanging the thin display device as described above on the wall, it is necessary to correctly insert the mounting bracket provided on the rear surface of the display device into the wall mounting bracket mounted on the wall surface side. The wall hanging work is often performed while checking the positional relationship with the wall surface mounting bracket on the wall surface side.

  However, when the display device is wall-mounted, the gap between the wall surface and the display device is narrow, so even if you look through the gap, the positional relationship between the display device side mounting bracket and the wall surface side wall mounting bracket It is difficult to grasp. Further, in a large display device, it is difficult to look into the rear surface side of the display device while the display device is lifted.

For this reason, the wall-hanging operation for attaching the display device to the wall surface is often time-consuming and has a problem that it places a heavy burden on the user.
Also, if the alignment between the display device side mounting bracket and the wall surface side wall mounting bracket is not accurate, when the user determines that the wall-hanging operation has been completed and releases the hand, It had the problem that it might fall.

  The present application has been made in view of such circumstances, and detects the displacement of the mounting member provided on the wall surface side with respect to the reference position, and displays information for guiding to the mounting position based on the detected displacement. It is an object of the present invention to provide a display device capable of easily performing alignment in an apparatus mounting operation.

  The display device according to the present application is a display device that can be attached to a mounting member, and includes a detection unit that detects a relative position of the mounting member with respect to the device, and the mounting member according to the relative position detected by the detection unit. And display means for displaying information for guiding the attachment to the head.

  In the present application, when the display device is attached to the attachment member, the user confirms the attachment position by looking at the back side of the display device by displaying information for guiding the display device to the attachment member on the display unit of the own device. However, it is not necessary to carry out the mounting work while reducing the work load during the mounting work.

  The display device according to the present application includes means for specifying a direction in which the device itself should be moved based on the relative position detected by the detection means, and the display means displays a character or a graphic representing the specified direction. It is characterized by being.

  In this application, since the direction which should move a display apparatus is displayed by a character or a figure, the grasp of the work content by a user becomes easy.

  The display device according to the present application is characterized in that the display means displays a graphic representing a relative positional relationship between the mounting member and the device itself based on the relative position detected by the detection means. To do.

  In the present application, since the relative positional relationship between the mounting member and the display device is displayed as a graphic, visibility during work is improved.

  The display device according to the present application includes means for detecting attachment to the attachment member, and means for notifying the fact that attachment to the attachment member is detected by the means.

  In the present application, when the display device is attached to the attachment member, the fact is notified, and accordingly, the timing when the user may release the hand is appropriately notified.

  The display device according to the present application is characterized in that the detection means is a sensor for detecting a magnetic flux density distribution.

  In the present application, the position of the mounting member is detected with high accuracy by a sensor that detects the position by detecting the distribution of magnetic flux density, such as a Hall element.

  The display device according to the present application is characterized in that the detection means includes at least two sensors that detect the strength of the magnetic field in different directions.

  In the present application, for example, by detecting the strength of the magnetic field in the horizontal direction and the vertical direction, it is possible to accurately indicate the moving direction of the display device when guiding the attachment to the attachment member.

  A television receiver according to the present application includes the display device according to any one of the above-described inventions, and a reception unit that receives a television broadcast signal, and receives a television image based on the television broadcast signal received by the reception unit. The information is displayed on the display device.

  In the present application, the present invention is applied to a television receiver (television receiver) such as a liquid crystal television receiver and a plasma television receiver.

According to the present application, when the display device is attached to the attachment member, by displaying information for guiding the display device to the attachment member on the display unit of the own device, the user looks into the back side of the display device and attaches the attachment position. It is not necessary to carry out the mounting work while confirming the above, and the work burden during the mounting work can be reduced.
Further, since the display device notifies that it has been attached, it is possible to prevent the display device from dropping due to insufficient attachment.

It is a schematic diagram which shows the external appearance of the display apparatus which concerns on this Embodiment, and the attachment member for attaching this display apparatus to a wall surface. It is explanatory drawing explaining the guidance method to an attachment member. It is explanatory drawing explaining the guidance method to an attachment member. It is explanatory drawing explaining the guidance method to an attachment member. It is a block which shows the internal structure of a display apparatus. It is a flowchart explaining operation | movement of a display apparatus. It is a figure which shows an example of the display content displayed on a display part according to the positional relationship of a display apparatus and an attachment member. It is a figure which shows an example of the display content displayed on a display part according to the positional relationship of a display apparatus and an attachment member. It is a figure which shows an example of the display content displayed on a display part according to the positional relationship of a display apparatus and an attachment member. It is a figure which shows an example of the display content displayed on a display part according to the positional relationship of a display apparatus and an attachment member. It is an external view which shows the other example of an attachment member. 6 is a schematic diagram showing a display device and an attachment member according to Embodiment 3. FIG. It is a graph which shows the output voltage of a magnetic sensor. It is explanatory drawing explaining the guidance method to an attachment member. It is explanatory drawing explaining the guidance method to an attachment member. It is explanatory drawing explaining the guidance method to an attachment member. 10 is a flowchart for explaining the operation of the display device according to the third embodiment. It is a partial expanded sectional view of a main body frame and an attachment member. FIG. 10 is a block diagram showing an internal configuration of a display device according to Embodiment 4. 10 is a flowchart for explaining the operation of the display device according to the fourth embodiment. It is a schematic diagram which shows an example of the display content displayed at the time of completion of attachment.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
Embodiment 1 FIG.
FIG. 1 is a schematic view showing the appearance of a display device according to the present embodiment and an attachment member for attaching the display device to a wall surface. The display device according to the present embodiment is a thin display device such as a liquid crystal television receiver, a plasma television receiver, a liquid crystal monitor, or a digital photo frame. In the following description, it is assumed that the display device according to the present embodiment is a liquid crystal television receiver.

The display device includes a rectangular parallelepiped main body frame 10 having a narrow width in the depth direction, and has a display surface for displaying a television image on the front side of the main body frame 10.
In the display device, a magnetic sensor 11 such as a Hall element is provided at an appropriate location (for example, near the center) on the back side of the main body frame 10. Furthermore, locking holes 12 and 12 that are locked to the attachment member 20 are provided on the back side of the main body frame 10. The locking holes 12 and 12 are provided on the left and right sides with the vertical center line of the main body frame 10 interposed therebetween, and are positioned so as to match the positions of the wall mounting brackets 22 and 22 on the mounting member 20, respectively. ing.

  The attachment member 20 is, for example, a fixture for a wall surface conforming to the VESA standard (VESA: Video Electronics Standards Association). The mounting member 20 includes a metal frame 25 that is screwed to a wall surface, and wall hanging brackets 22, 22 that are erected in a vertical direction with respect to the metal frame 25. Receiving pieces 22 a and 22 a projecting upward are provided at the front ends of the wall-hanging brackets 22 and 22.

  Wall mounting brackets 22 and 22 of mounting member 20 are inserted into locking holes 12 and 12 in main body frame 10 of the display device, and main frame 10 of the display device is locked by receiving pieces 22a and 22a of wall mounting brackets 22 and 22, respectively. . Thereby, the main body frame 10 of the display device is attached to the attachment member 20.

  In addition, the attachment member 20 includes a magnet 21 at an appropriate location of the metal frame 25 (in the example illustrated in FIG. 1, approximately the center of the upper portion of the metal frame 25). In the present embodiment, the magnetic sensor 11 provided on the main body frame 10 detects the position of the magnet 21 of the mounting member 20, and information for guiding the mounting of the main body frame 10 according to the detected position of the magnet 21. Is displayed.

  2-4 is explanatory drawing explaining the guidance method to the attachment member 20. FIG. FIG. 2 shows a guidance method when the position of the display device is shifted in the horizontal direction or the vertical direction with respect to the mounting member 20. The display device according to the present embodiment includes a magnetic sensor 11, and the magnetic sensor 11 detects a distribution of magnetic flux density outside the display device, whereby a magnet 21 provided at an appropriate position of the mounting member 20. The position of is detected. With this magnetic sensor 11, for example, the position of the magnet 21 in the three-dimensional coordinate system with the position of the magnetic sensor 11 as the origin (that is, the relative position of the magnet 21 as viewed from the own apparatus) is detected. In order to display the detected position of the magnet 21, the display device projects the detected three-dimensional coordinates onto the display surface to convert them to two-dimensional coordinates, and the magnet 21 is positioned at the position of the display surface corresponding to the converted two-dimensional coordinates. The figure that represents is displayed. In the example shown in FIG. 2, the position of the magnet 21 is displayed on the display unit 104 of the display device by a black circle MA.

  Further, the display device can detect whether or not the device itself is displaced in the left-right direction or the up-down direction of the main body frame 10 by acquiring the three-dimensional coordinates of the magnet 21. When the position is shifted in the left-right direction and the up-down direction, for example, a figure indicating the position of the own apparatus and a figure indicating the target position are displayed, and information indicating in which direction to move is presented to the user. In the example shown in FIG. 2, the position of the own device is represented by a solid circle TS, and the figure indicating the target position is represented by a broken circle TA to indicate to the user that the display device should be moved leftward. ing.

  In the present embodiment, since the magnetic sensor 11 detects the three-dimensional coordinates of the magnet 21 in the mounting member 20, it is possible to detect the front-rear direction displacement of the main body frame 10 with respect to the mounting member 20. FIG. 3 shows a guiding method when the position of the display device is shifted in the front-rear direction with respect to the mounting member 20. As in FIG. 2, a graphic indicating the detected position of the magnet 21 is displayed by a black circle MA, the position of the apparatus itself is displayed by a solid circle TS, and a graphic indicating the target position is displayed by a broken circle TA. In FIG. 3, the size of the circle TS representing the position of the own device is changed according to the distance between the main body frame 10 and the attachment member 20. The shorter the distance between the main body frame 10 and the mounting member 20, the smaller the diameter of the solid circle TS, and the longer the distance between the main body frame 10 and the mounting member 20, the larger the diameter of the solid line circle TS. And the feeling of distance between the main body frame 10 and the attachment member 20 is represented.

  In addition, the display form at the time of guiding the attachment is not limited to that shown in FIGS. 2 and 3. For example, the moving direction may be displayed by a figure such as an arrow, The moving direction may be displayed by information.

  FIG. 4 shows display contents when the position of the main body frame 10 becomes the target position. In the present embodiment, the display device is guided so that the positions of the two locking holes 12, 12 provided on the back surface of the main body frame 10 face the receiving pieces 22 a, 22 a of the wall-hanging brackets 22, 22, respectively. Hereinafter, a position where the two locking holes 12 and 12 of the main body frame 10 are opposed to the receiving pieces 22a and 22a of the wall hanging brackets 22 and 22 is referred to as a wall hanging position. When the display device is in the wall hanging position, the main body frame 10 is locked to the wall hanging brackets 22 and 22 by pushing the display device forward (attachment member side) and lowering the display device downward. Therefore, when the position of the display device becomes the wall hanging position by guiding the display device, the positions of the wall hanging brackets 22 and 22 and the locking holes 12 and 12 of the main body frame 10 are aligned as shown in FIG. The fact that the main body frame 10 is attached is displayed as character information by pushing the display device forward and then lowering the display device downward.

  FIG. 5 is a block diagram showing the internal configuration of the display device. The display device includes a magnetic sensor 11, a control unit 101, a storage unit 102, a detection unit 103, a display unit 104, and a reception unit 110.

The magnetic sensor 11 is, for example, a Hall element, and is a sensor that outputs a sensor signal corresponding to the distribution of magnetic flux density.
The detection unit 103 acquires a sensor signal output from the magnetic sensor 11 and calculates the position of the magnet 21 with respect to its own device (that is, three-dimensional coordinates in a three-dimensional space with the magnetic sensor 11 as an origin). In addition, since the calculation method of the position coordinate using the magnetic sensor 11 is well-known, it abbreviate | omits the description.

  The control unit 101 controls operations of hardware units such as the storage unit 102, the detection unit 103, the display unit 104, and the reception unit 110 included in the display device. The control unit 101 is a calculation unit such as a CPU or a microcomputer, and executes various types of calculation processing, determination processing, control instructions, and the like. For example, when the control unit 101 acquires the three-dimensional coordinates calculated by the detection unit 103, the control unit 101 determines whether the three-dimensional coordinates are within a predetermined range. The control unit 101 reads a screen image stored in advance in the storage unit 102 and presents a display instruction based on the read screen image to the display unit 104 in order to present information to the user.

The storage unit 102 is a non-volatile memory such as a flash memory, and stores the above-described screen image in advance. The storage unit other than the storage unit 102 may further include a memory such as a RAM that temporarily stores various data generated when the control unit executes the process.
The receiving unit 110 is a receiving unit for receiving a television broadcast signal, and generates a television image based on the received television broadcast signal. The television image generated by the receiving unit 110 is sent to the control unit 101. The control unit 101 causes the display unit 104 to display a television image by giving a display instruction based on the television image to the display unit 104.

  FIG. 6 is a flowchart for explaining the operation of the display device. FIGS. 7 to 10 are diagrams showing examples of display contents displayed on the display unit 104 in accordance with the positional relationship between the display device and the mounting member 20. The detection unit 103 of the display device acquires a sensor signal output from the magnetic sensor 11 in order to detect a predetermined mounting position (wall-hanging position) on the mounting member 20 (step S11), and the signal strength of the acquired sensor signal is It is determined whether or not it is equal to or greater than a predetermined value (step S12).

  When it is determined that the signal intensity of the acquired sensor signal is less than the predetermined value (S12: NO), the detection unit 103 notifies the control unit 101 to that effect. When the control unit 101 receives a notification from the detection unit 103 that the magnitude of the sensor signal output from the magnetic sensor 11 is less than a predetermined value, the main body frame 10 and the attachment member 20 are separated as shown in FIG. 7A. In this positional relationship, the main body frame 10 cannot be attached to the attachment member 20. Since it is necessary to bring the main body frame 10 close to the mounting member 20, the control unit 101 issues a display instruction for displaying a message indicating that. For example, the control unit 101 reads a screen image including a message “Please bring the TV close to a wall bracket” from the storage unit 102 and outputs the read screen image to the display unit 104 together with a display instruction.

  When the display unit 104 receives a display instruction from the control unit 101, the display unit 104 performs a display for guiding the main body frame 10 to the mounting member 20 (step S13). At this time, the display unit 104 displays the screen image sent from the control unit 101 together with the display instruction (see FIG. 7B), so that the body frame 10 is attached to the mounting member 20 for the user who is performing the mounting operation. To get closer to

  In step S12, it is determined whether or not the display device should be brought closer based on the signal intensity of the sensor signal. However, the three-dimensional coordinates of the magnet 21 provided on the mounting member 20 are obtained from the sensor signal. Therefore, a range may be set in advance for the three-dimensional coordinates, and a display that prompts the display device to approach the mounting member 20 may be performed when the range is outside the set range.

  When it is determined in step S12 that the signal intensity of the acquired sensor signal is equal to or greater than a predetermined value (S12: YES), the detection unit 103 uses the acquired sensor signal as a position in the three-dimensional space with the sensor position as the origin. It converts into a coordinate and calculates the three-dimensional coordinate which shows the position of the magnet 21 which is a detection target. The detection unit 103 notifies the control unit 101 of the calculated three-dimensional coordinates.

When the control unit 101 receives the three-dimensional coordinates of the magnet 21 from the detection unit 103 (step S14), the control unit 101 can grasp the relative positional relationship between the main body frame 10 and the mounting member 20, so A display instruction for displaying information corresponding to the relative positional relationship of the members 20 is output to the display unit 104.
When receiving the display instruction from the control unit 101, the display unit 104 displays the screen image according to the received display instruction, thereby displaying the main body frame 10 to the mounting member 20 (step S15).

For example, when the main body frame 10 exists at a position shifted from the wall-hanging position in the left-right direction or the up-down direction (see FIG. 8A), the control unit 101 displays the graphic representing the target and the target scope (the target position and the current position of the display device). And a message that instructs the target scope to be superimposed on the target, and the generated screen image is output to the display unit 104 together with a display instruction.
The display unit 104 displays, for example, a screen as illustrated in FIG. 8B by performing display according to the display instruction from the control unit 101. That is, a message for instructing the target scope to be superimposed on the target is displayed on the display unit 104 together with the graphic representing the target and the target scope, thereby displaying the main body frame 10 to the wall hanging position.

In addition, when the display device exists at a position shifted in the front-rear direction (direction perpendicular to the display surface of the display device) from the wall-hanging position (see FIG. 9A), a figure (target position and display) representing the target and target scope A screen image including a message indicating that the current position of the device) and a message indicating that the display device should be approached (or separated) from the mounting member 20, and the generated screen image is output to the display unit 104 together with a display instruction. .
For example, the display device displays a screen as shown in FIG. 9B by performing display according to the display instruction from the control unit 101. That is, a message for instructing the main body frame 10 to approach the attachment member 20 is displayed on the display unit 104 together with a graphic representing the target and the target scope, thereby displaying the main body frame 10 to the wall hanging position.

  At this time, the size of the target and target scope to be displayed on the display unit 104 is changed and displayed according to the distance from the wall hanging position. The shorter the distance between the main body frame 10 and the mounting member 20, the smaller the target scope, and the longer the distance between the main body frame 10 and the mounting member 20, the larger the target scope, This represents a sense of distance from the member 20. By displaying the target scope smaller as the distance from the wall-mounted position becomes smaller, it becomes possible to perform the alignment between the display device and the mounting member 20 with higher accuracy.

  Next, the control unit 101 determines whether or not the current position of the main body frame 10 is a wall hanging position (step S16). The control unit 101 determines whether or not the current position of the main body frame 10 is a wall-hanging position by determining whether or not the three-dimensional coordinates output from the detection unit 103 are within a predetermined range. Can do. If it is determined that the position is not the wall hanging position (S16: NO), the control unit 101 returns the process to step S11.

When guidance for matching the target scope with the target is performed on the screen of the display unit 104 and it is determined that the current position of the main body frame 10 is the wall-hanging position as shown in FIG. 9A (S16: YES), the control unit 101 Then, a screen image including a message for performing guidance for completing the attachment is read from the storage unit 102, and the read screen image is output to the display unit 104 together with a display instruction.
The display unit 104 displays according to the display instruction from the control unit 101, thereby displaying a message indicating that the wall hanging position has been reached, and instructing the user to attach to the attachment member 20 (step S17). In the example shown in FIG. 9B, the fact that the main body frame 10 is in the wall-hanging position, and that the display device is pushed forward to complete the attachment, and further pushed down, the attachment to the attachment member 20 is completed. A message is displayed.

  Next, the control unit 101 determines whether or not the attachment of the main body frame 10 has been completed (step S18). The control unit 101 can determine whether the attachment of the main body frame 10 is completed by determining whether the three-dimensional coordinates output from the detection unit 103 are within a predetermined range. In the present embodiment, since the attachment completion position is different from the above-described wall-hanging position, both can be discriminated and determined by setting ranges as determination criteria in advance.

If it is determined in step S18 that the attachment is not completed (S18: NO), the control unit 101 waits until the attachment is completed.
When it is determined that the attachment is completed (S18: YES), the control unit 101 reads a screen image including a message indicating that the attachment of the main body frame 10 is completed from the storage unit 102, and displays the read screen image together with a display instruction. Output to the display unit 104.
The display unit 104 displays a message indicating that the attachment of the main body frame 10 is completed by performing display according to the display instruction from the control unit 101 (step S19). In the example shown in FIG. 10B, a message indicating that the main body frame 10 has been attached to the attachment member 20 and that it is safe to release the hand from the display device are displayed. In addition, when the user's work such as screwing is necessary after the attachment to the attachment member 20 is completed, it may be configured to display the fact.

  As described above, in this embodiment, by displaying information for guiding to the mounting member 20 on the display unit 104 of the display device, the user looks into the back side of the display device while checking the mounting position. Since it becomes unnecessary to carry out the mounting work, workability during the mounting work is improved.

  In the present embodiment, the information for guiding to the mounting member 20 is displayed on the display unit 104 of the display device. However, the information for guiding to the mounting member 20 by providing a voice output unit for outputting sound to the display device. It is good also as a structure which performs guidance by an audio | voice with the display of.

  In the present embodiment, the magnetic sensor 11 is used to detect a predetermined position (position of the magnet 21) on the mounting member 20. However, instead of using the magnetic sensor 11, other position detection means may be used. It may be used. For example, it is good also as a structure which provides a marker in the appropriate position of the attachment member 20, and detects the position of this marker by analyzing the image obtained by a CCD camera etc. In addition, a reflecting member is provided at an appropriate position of the mounting member 20, a light emitting device and a light receiving device are provided on the back side of the display device, and the reflected light of the light emitted from the light emitting device is received by the light receiving device. It is good also as a structure which detects.

Embodiment 2. FIG.
In the first embodiment, one magnet 21 is provided for the attachment member 20, but two or more magnets may be provided. In the second embodiment, a configuration in which two magnets are provided on the mounting member 20 will be described.

  FIG. 11 is an external view showing another example of the attachment member. The attachment member 20 is a fixture for a wall surface conforming to the VESA standard, as in the first embodiment. The mounting member 20 includes a metal frame 25 that is screwed to a wall surface, and wall hanging brackets 22 and 22 that are erected with respect to the metal frame 25 are provided. Receiving pieces 22 a and 22 a projecting upward are provided at the front ends of the wall-hanging brackets 22 and 22.

  Wall mounting brackets 22 and 22 of mounting member 20 are inserted into locking holes 12 and 12 in main body frame 10 of the display device, and main frame 10 of the display device is locked by receiving pieces 22a and 22a of wall mounting brackets 22 and 22, respectively. . Thereby, the main body frame 10 of the display device is attached to the attachment member 20.

  The mounting member 20 according to the second embodiment is provided with magnets 21a and 21b at two appropriate locations on the metal frame 25, in the example shown in FIG.

  Thus, in the second embodiment, since the mounting member 20 is provided with a plurality of magnets 21a and 21b, even if the sensitivity of the magnetic sensor 11 is not increased, at least one of the magnets 21a (21b) is used. The possibility that the magnetic flux density is detected increases. As a result, in the initial stage of attachment, the range in which the main body frame 10 is moved in order to search for the positions of the magnets 21a and 21b is reduced, and the work burden on the user can be further reduced. The processing after the positions of the magnets 21a and 21b are detected is exactly the same as in the first embodiment.

  In the second embodiment, the magnets 21a and 21b are provided at two appropriate locations on the metal frame 25. However, it goes without saying that the two wall mounting brackets 22 and 22 themselves may be magnets.

Embodiment 3 FIG.
In Embodiment 1, the distribution of the magnetic flux density outside the display device is detected using the output of one magnetic sensor 11 and the three-dimensional coordinates of the magnet 21 are calculated to determine the guiding direction. The direction of guidance may be determined using a plurality of sensors that detect the strength of the magnetic field in a predetermined direction.
In the third embodiment, a configuration for determining the guiding direction of the display device using two magnetic sensors will be described.

  FIG. 12 is a schematic diagram showing a display device and an attachment member according to the third embodiment. The display device according to the third embodiment includes a magnetic sensor 11a that is positioned approximately at the center in the left-right direction of the main body frame 10 and above the two locking holes 12, 12, and a right engagement when viewed from the back of the display device. And a magnetic sensor 11b located in the vicinity of the stop hole 12. Both the magnetic sensors 11a and 11b are Hall elements, the magnetic sensor 11a detects the strength of the magnetic field in the horizontal direction of the display device, and the magnetic sensor 11b is configured to detect the strength of the magnetic field in the vertical direction of the display device. Has been.

  Further, the mounting member 20 includes a magnet 21a positioned substantially at the center of the upper portion of the metal frame 25, and a magnet 21b positioned in the vicinity of the left wall hanging bracket 22 when viewed from the front of the mounting member 20, and the display device is the mounting member. 20, the magnetic sensor 11 a on the display device side and the magnet 21 a on the mounting member 20 side face each other, and the magnetic sensor 11 b on the display device side and the magnet 21 b on the mounting member 20 side face each other. 11a, 11b and magnets 21a, 21b are positioned. The magnet 21a is disposed so that the left side is the S pole and the right side is the N pole when viewed from the front, and the magnet 21b is disposed such that the upper side is the S pole and the lower side is the N pole when viewed from the front.

  FIG. 13 is a graph showing the output voltage of the magnetic sensor 11a. The horizontal axis of the graph indicates the moving position of the magnet from the detection center in the magnetic sensor 11a, and the vertical axis indicates the output voltage of the magnetic sensor 11a. When the magnetic sensor 11a is located near the N pole of the magnet 21a and the magnetic field of the N pole is strong, the output voltage of the magnetic sensor 11a is Vcc (in this embodiment, Vcc = 5V). As the magnetic sensor 11a approaches the N pole of the magnet 21a and goes toward the center of the magnetic sensor 11a, the output voltage of the magnetic sensor 11a decreases monotonously. When the magnetic sensor 11a is located at the center of the magnetic pole (the part where the magnetic field strengths of the S pole and N pole are the same), the output voltage of the magnetic sensor 11a has a value of ½ of Vcc. When the magnetic sensor 11a further moves, the output voltage of the magnetic sensor 11a decreases more monotonously from Vcc / 2, and the magnetic sensor 11a moves away from the S pole of the magnet 21a by a certain distance, and the magnetic field of the S pole becomes stronger. The output voltage is substantially zero.

  In FIG. 13, the output voltage of the magnetic sensor 11a has been described based on the positional relationship between the magnetic sensor 11a and the magnet 21a. However, the output voltage of the magnetic sensor 11b based on the positional relationship between the magnetic sensor 11b and the magnet 21b is also described above. It is exactly the same as

14-16 is explanatory drawing explaining the guidance method to an attachment member. 14A, 15A, and 16A schematically show the positional relationship between the magnetic sensors 11a and 11b and the magnets 21a and 21b, respectively. 14B, FIG. 15B, and FIG. 16B show display examples on the display device, respectively.
14 to 16, it is assumed that the attachment member 20 is fixed to a wall or the like and is attached to the attachment member 20 by moving the display device.

  Assume that the output voltages of the magnetic sensors 11a and 11b are both 4.5V. In this case, since the magnetic sensors 11a and 11b are located close to the N pole of the magnets 21a and 21b, respectively, as shown in FIG. 14A, the magnetic sensors 11a and 11b are arranged at the lower right of the magnets 21a and 21b, that is, It can be seen that the relative position of the display device with respect to the attachment member 20 is an arrangement in which the display device is located at the lower right when viewed from the front.

  At this time, the display device displays a guide as shown in FIG. 14B, for example. In the guide shown in FIG. 14B, the attachment position is indicated by a black circle, and the relative position of the display device is indicated by a white circle. Further, the display device displays the moving direction with an arrow and character information “Please move the TV upward”.

  As a result of the user moving the display device upward, it is assumed that the output voltage of the magnetic sensor 11a is 4.0V and the output voltage of the magnetic sensor 11b is 2.5V. In this case, since the output voltage of the magnetic sensor 11b that detects the strength of the magnetic field in the vertical direction is Vcc / 2 (= 2.5 V), it has reached the target position (wall-hanging position) in the vertical direction. I understand. On the other hand, in the left-right direction, it can be seen that the display device is shifted to the right side of the mounting member 20.

  At this time, the display device displays a guide as shown in FIG. 15B, for example. In the guidance shown in FIG. 15B, the attachment position is indicated by a black circle, and the relative position of the display device is indicated by a white circle. The display device displays the moving direction with an arrow and character information “Please move the TV to the left”.

  It is assumed that the output voltages of the magnetic sensors 11a and 11b are both 2.5V as a result of the user moving the display device to the left. In this case, since the output voltages of the magnetic sensor 11a for detecting the strength of the magnetic field in the left-right direction and the magnetic sensor 11b for detecting the strength of the magnetic field in the vertical direction are both Vcc / 2 (= 2.5 V), It can also be seen that both the vertical direction and the target position have been reached.

  At this time, the display device displays a guide as shown in FIG. 16B, for example. That is, when both the left and right directions and the up and down direction of the display device reach the target position, the two locking holes 12 and 12 provided on the back surface of the main body frame 10 face the receiving pieces 22a and 22a of the wall hanging brackets 22 and 22, respectively. Therefore, the fact that the main body frame 10 is attached is displayed as character information by pushing the display device forward and then lowering the display device downward.

  FIG. 17 is a flowchart for explaining the operation of the display device according to the third embodiment. Similarly to the first embodiment, the detection unit 103 of the display device acquires sensor signals output from the magnetic sensors 11a and 11b (step S11), and whether or not the signal intensity of the acquired sensor signals is equal to or greater than a predetermined value. Is determined (step S12). If the signal intensity is less than the predetermined value (S12: NO), an instruction is given to bring the display device closer to the mounting member 20 (step S13), and the process returns to step S11.

  When the signal strength is equal to or greater than the predetermined value (S12: YES), the detection unit 103 acquires a sensor signal from the magnetic sensor 11b that detects the strength of the magnetic field in the vertical direction (step S21), and the sensor output is Vcc / 2. It is determined whether or not (step S22). When the sensor output is not Vcc / 2 (S22: NO), the control unit 101 performs vertical guidance (step S23). At this time, if the voltage of the sensor signal acquired in step S21 is lower than Vcc / 2, it can be determined that the magnetic sensor 11b is located on the upper side of the magnet 21b, and therefore the display for guiding the display device to the lower side. When the voltage of the sensor signal is higher than Vcc / 2, it can be determined that the magnetic sensor 11b is positioned below the magnet 21b, and thus the display for guiding the display device upward is performed. After performing the display for guiding in the vertical direction, the control unit 101 returns the process to step S21.

  When the sensor output of the magnetic sensor 11b that detects the strength of the magnetic field in the vertical direction becomes Vcc / 2 (S22: YES), the detection unit 103 detects from the magnetic sensor 11a that detects the strength of the magnetic field in the horizontal direction. A signal is acquired (step S24), and it is determined whether the sensor output is Vcc / 2 (step S25). If the sensor output is not Vcc / 2 (S25: NO), the control unit 101 performs left-right guidance (step S26). At this time, if the voltage of the sensor signal acquired in step S24 is lower than Vcc / 2, it can be determined that the magnetic sensor 11a is located on the left side of the magnet 21a, and thus a display for guiding the display device to the right side is displayed. If the voltage of the sensor signal is higher than Vcc / 2, it can be determined that the magnetic sensor 11a is located on the left side of the magnet 21a, so that the display device is guided to the right side. After performing the display that guides in the left-right direction, the control unit 101 returns the process to step S24.

  When the sensor output of the magnetic sensor 11a that detects the strength of the magnetic field in the left-right direction becomes Vcc / 2 (S25: YES), both the left-right direction and the vertical direction of the display device are the target positions (wall-hanging positions). By displaying information as shown in FIG. 16B, the user is instructed to mount the mounting member 20 (step S17).

  Next, the control unit 101 determines whether or not the attachment of the main body frame 10 has been completed (step S18). When it is determined that the attachment is not completed (S18: NO), the control unit 101 waits until the attachment is completed. When it is determined that the attachment is completed (S18: YES), the control unit 101 displays a message indicating that the attachment of the main body frame 10 is completed (step S19).

  In Embodiment 3, the position in the left-right direction is guided after the position in the up-down direction is guided. However, the position in the up-down direction may be guided after the position in the left-right direction is guided, The sensor signal in the vertical direction and the horizontal direction may be acquired at the same time, and the vertical position and the horizontal position may be guided simultaneously.

  In the third embodiment, the configuration using the magnetic sensors 11a and 11b that detect the in-plane two-direction magnetic field strength on the display surface of the display device has been described. However, the magnetic field in the direction perpendicular to the display surface is described. A sensor (Hall element) for detecting the strength may be further provided, and guidance in the direction of contacting and separating from the mounting member 20 may be performed based on the sensor output of the sensor.

Embodiment 4 FIG.
In the first embodiment, the completion of the attachment of the main body frame 10 is determined based on the three-dimensional coordinates detected by the detection unit 103. However, in order to detect the attachment member 20 when the attachment is completed, a sensor, a switch, The detection means may be provided, and the completion of the attachment may be determined based on the output signal from the detection means.
In the fourth embodiment, a configuration in which detection means is provided in a display device to determine the completion of attachment will be described.

  FIG. 18 is a partially enlarged cross-sectional view of the main body frame 10 and the attachment member 20. In the fourth embodiment, for example, at the upper end portion of the locking hole 12 in the main body frame 10 of the display device, the light emitting unit 15 that emits light and the light receiving unit 16 that outputs an electrical signal according to the light reception level of the received light. Are placed facing each other. The control unit 101 of the display device gives a light emission instruction to the light emitting unit 15 at the timing when the position of the main body frame 10 becomes the wall hanging position, and emits light.

  As described in the first embodiment, when the display device is guided to the mounting member 20 and the position of the main body frame 10 is the wall-hanging position, the main body frame 10 is pushed forward and instructed to be lowered. Thus, the main body frame 10 is attached to the wall hanging bracket 22. As shown in FIG. 18A, in the state where the main body frame 10 is in the wall-hanging position and is further pushed forward (that is, before the completion of the mounting), the light from the light-emitting portion 15 is blocked by the receiving piece 22a of the wall-hanging bracket 22. There is no.

  On the other hand, when the main body frame 10 is lowered and the attachment is completed, the light from the light emitting portion 15 is blocked by the receiving piece 22a of the wall hanging bracket 22 as shown in FIG. The light reception level is lower than that in the case of FIG. 18A.

  Therefore, by providing a threshold value with respect to the magnitude of the electrical signal output from the light receiving unit 16, the control unit 101 causes the state before the mounting is completed (the arrangement relationship shown in FIG. 18A) and the state after the mounting is completed (shown in FIG. It is possible to detect it separately from the (positional relationship).

  FIG. 19 is a block diagram showing an internal configuration of the display device according to the fourth embodiment. As in the first embodiment, the display device includes the magnetic sensor 11, the control unit 101, the storage unit 102, the detection unit 103, the display unit 104, and the reception unit 110. In addition, the display device according to the present embodiment includes light emitting unit 15 and light receiving unit 16 connected to control unit 101.

The light emitting unit 15 is a light emitting unit such as an LED that emits light having an appropriate intensity according to an instruction from the control unit 101.
The light receiving unit 16 is a light receiving unit such as a photodiode that receives light emitted from the light emitting unit 15 and outputs an electrical signal corresponding to the intensity of the received light to the control unit 101.

  FIG. 20 is a flowchart for explaining the operation of the display device according to the fourth embodiment. When the control unit 101 of the display device guides the main body frame 10 of the display device to the wall-hanging position of the mounting member 20 by executing the same processing as that of the first embodiment, the case shown in FIG. 9B is shown. Such a screen is displayed on the display unit 104 to instruct attachment to the attachment member 20 (steps S11 to S17).

  After instructing attachment to the attachment member 20, the control unit 101 gives a light emission instruction to the light emitting unit 15 (step S31). The light emitting unit 15 emits light when a light emission instruction is given from the control unit 101. When receiving the light emitted from the light emitting unit 15, the light receiving unit 16 converts the received light into an electric signal and outputs the converted electric signal to the control unit 101.

  The control unit 101 acquires the electrical signal output from the light receiving unit 16 (step S32), and determines whether or not the mounting to the mounting member 20 is completed based on the acquired electrical signal (step S18). In the fourth embodiment, when an attachment instruction is given, a light emission instruction is given to the light emitting unit 15, and light is emitted from the light emitting unit 15. When the attachment is completed, a part of the light emitted from the light emitting part 15 is blocked by the receiving piece 22a in the wall hanging bracket 22 of the attachment member 20, and the light receiving level in the light receiving part 16 is lowered. Therefore, a threshold value is set for the magnitude of the electrical signal output from the light receiving unit 16, and when a signal larger than the threshold value is obtained, it is determined that the attachment to the mounting member 20 is not completed, and is smaller than the threshold value. When the signal is obtained, it is determined that the attachment to the attachment member 20 is completed.

When it is determined that the attachment to the attachment member 20 is not completed (S18: NO), the control unit 101 returns the process to step S31.
When it is determined that the attachment to the attachment member 20 is completed (S18: YES), the control unit 101 reads a screen image including a message indicating that the attachment of the main body frame 10 is completed from the storage unit 102, and the read screen The image is output to the display unit 104 together with a display instruction.

  The display unit 104 displays a message indicating that the attachment of the main body frame 10 is completed by performing display according to the display instruction from the control unit 101 (step S19). FIG. 21 is a schematic diagram showing an example of display contents displayed when the installation is completed. In the example shown in FIG. 21, a message is displayed indicating that the main body frame 10 is attached to the attachment member 20 and that it is safe to release the hand from the display device. In addition, when the user's work such as screwing is necessary after the attachment to the attachment member 20 is completed, it may be configured to display the fact.

  In the present embodiment, the configuration using optical sensors (light emitting unit and light receiving unit) as detection means for detecting the completion of attachment has been described, but a contact sensor or a switch may be used instead of the optical sensor. Good. It is configured so that a part of the main body frame 10 and the receiving piece 22a of the wall hanging bracket 22 are in contact with each other at a position where the main body frame 10 is attached, and a contact sensor or a switch is provided at the contact position in the main body frame 10, By obtaining an output signal from a contact sensor, a switch, or the like, it is possible to determine the completion of attachment.

DESCRIPTION OF SYMBOLS 10 Main body frame 11 Magnetic sensor 12, 12 Locking hole 20 Mounting member 21 Magnet 22 Wall mounting bracket 101 Control part 102 Storage part 103 Detection part 104 Display part 110 Reception part

Claims (5)

In a display device that can be attached to a mounting member,
Detecting means for detecting a relative position of the mounting member with respect to the own device;
A display device comprising: display means for displaying information for inducing attachment to the attachment member according to the relative position detected by the detection means. Based on the relative position detected by the detection means, comprising means for specifying the direction in which the device should be moved,
The display device according to claim 1, wherein the display means displays a character or a graphic representing the specified direction.   2. The display unit according to claim 1, wherein the display unit displays a graphic representing a relative positional relationship between the mounting member and the device itself based on the relative position detected by the detection unit. 2. The display device according to 2. Means for detecting attachment to the attachment member;
The display device according to any one of claims 1 to 3, further comprising: means for notifying that the attachment to the attachment member is detected by the means.   The display device according to claim 1, wherein the detection unit is a sensor that detects a distribution of magnetic flux density.

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