JP3969410B2 - Flat panel display device - Google Patents

Description

  The present invention relates to a flat panel display device, and more particularly to a flat panel display device configured to incorporate a speaker in a stand that supports the flat panel display body, in order to ensure electrical connection between the flat panel display body and the speaker. It concerns the structure.

In recent years, flat panel display devices employing liquid crystal displays and plasma displays have been put into practical use as thin image display devices.
In this flat panel display device, a dedicated stand is prepared, and a flat panel display main body is placed on and supported by this stand (for example, Patent Document 1).
JP-A-10-161552

  Recently, in this flat panel display device, it has been considered that a speaker for a low frequency range is incorporated in a stand, and a loud sound system is configured together with the speaker built in the flat panel display body.

  In this case, a connecting portion for electrically connecting the flat panel display main body and the bass speaker is provided between the flat panel display main body and the stand. In this connecting portion, the connector on the flat panel display main body side and the stand side are provided. Although the electrical connection is performed by the fitting of the connector, there is a possibility that the connector is not surely fitted in some cases and used in an incompletely connected state. For example, when packing and transporting the display body and stand in a combined state, the connector may become uncertain due to vibration during transportation, etc. Since there was no sound from the speakers, there was a risk of being mistaken for a malfunction.

  The present invention has been made in view of such a point, and provides a flat panel display device in which the electrical connection between the flat panel display main body and the speaker on the stand side is reliably performed, and to solve the above problems. Objective.

In order to achieve the above object, the present invention
A flat panel display main body, a stand for supporting and location mounting the flat panel display main body is constituted by, in a flat panel display device comprising built speakers to stand, the provided flat panel display main body 1 When the flat panel display main body is placed on the stand, the second connector for electrically connecting the flat panel display main body and the speaker by being fitted to the first connector provided on the stand First positioning means for positioning the flat panel display main body and the stand, and when the flat panel display main body is placed on the stand, the first positioning means positions the flat panel display main body and the stand. After has a second positioning means for positioning the first and second connectors, the.
With the flat panel display body placed on the stand, the first connector and the second connector are fitted and connected, and either one of the first connector and the second connector is always attached by an elastic member. The connector is fitted so as to be pressed against the other side, and the connector on one side is structured to be fitted to the connector on the other side at an intermediate point of the movable range .

  The flat panel display device of the present invention has a structure in which the display main body and the speaker are electrically connected in a state where the display main body is placed on the stand, so that the user does not have to perform troublesome connection work. The electrical connection of the speakers is ensured. And especially in this invention, it was set as the structure fitted so that the connector of one side might always be pressed on the connector of the other side with the force of an elastic member, and the stable connection state is ensured. For this reason, for example, even when packing and transporting the display main body and the stand in a combined state, the connection of the connector is not uncertain due to vibration during transportation, and the reliability of the connection is guaranteed. There is an effect.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view seen from the front side of a flat panel display device to which the present invention is applied, and FIG. 2 is a perspective view seen from the back side.
The flat panel display device 1 includes a flat panel display body (hereinafter simply referred to as a display body) 2 and a stand 10 that supports the display body 2.

  The display main body 2 is a plasma display type television apparatus having a large screen 3 of 37 to 50 inches on the front surface and an ultra-thin shape having a thickness of less than 10 cm. In the display main body 2, speakers 4 and 5 are incorporated on both the left and right sides of the screen 3, and stereo sound is output from the left and right speakers 4 and 5. In addition, from the speakers 4 and 5 of the display main body 2, sound in the middle and high range is mainly output.

  On the other hand, the stand 10 for supporting the display main body 2 is configured such that a leg 12 is erected on a base plate 11 in contact with a floor surface, and a pedestal plate 13 is horizontally fixed thereon. The main body 2 is placed and supported in a state where the main body 2 stands vertically. Further, on the back side of the stand 10, two support columns 14 and 15 that support the back surface of the display main body 2 are erected vertically from both left and right ends of the base plate 13, and screws are fixed to the support columns 14 and 15. Thus, the display body 2 is fixed and integrated.

  In addition, in this stand 10, the leg 12 is comprised so that rotation to the left and right and inclination adjustment to the front and back is possible with respect to the base board 11, and, thereby, the angle of the screen of the display main body 2 can be variably adjusted. It is like that.

  In the flat panel display device 1 of this example, a speaker box 20 with a built-in speaker 21 is mounted so as to be supported between upper portions of left and right columns 14 and 15 erected on the back side of the stand 10. Yes. The speaker 21 incorporated in the speaker box 20 is a low-frequency speaker (hereinafter referred to as a woofer), and is electrically connected to the display main body 2 mounted on the stand 10 to output heavy bass.

  In this flat panel display device 1, the maximum output of the left and right speakers 4, 5 of the display body 2 is 25 W, and the maximum output of the woofer 21 on the back side of the stand 10 is 50 W, and the display body 2 and the stand 10 are combined. Thus, a sound system with a total volume of 100 W is completed.

  In particular, in this flat panel display device 1, support posts 14 and 15 are erected on the back side of the stand 10 on which the display main body 2 is placed, and a speaker box 20 in which a woofer 21 is incorporated is supported between the support posts 14 and 15. With this configuration, the speaker box 20 can be formed large to increase the capacity, so that a more powerful deep bass sound system can be realized.

  In addition, the flat panel display device 1 can have a simple and simple external configuration as viewed from the front due to the configuration in which the speaker box 20 in which the woofer 21 is built is disposed on the back side of the stand 10.

Next, the combined structure of the display body 2 and the stand 10 in the flat panel display device 1 of this example will be described in more detail.
As shown in FIG. 3, in the stand 10, two protrusions 17 and 18, which are the first protrusions of the present invention, are vertically provided on the left and right ends of the base plate 13. On the display body 2 side, as shown in FIG. 4, two insertion holes 7 and 8, which are the first insertion holes of the present invention, are formed in the center of the bottom 2a. When the display main body 2 and the stand 10 are combined, the insertion holes 7 and 8 are aligned with the protrusions 17 and 18, and the display main body 2 is placed on the base plate 13 of the stand 10 from above as shown in FIG. Thus, the protrusions 17 and 18 are inserted and engaged in the insertion holes 7 and 8 to accurately position the display main body 2 and the stand 10, and in this state, the columns 14 and 15 are fixed by screws from the back side of the stand 10. Is fixed to the display body 2 and the display body 2 and the stand 10 are integrated. The insertion holes 7 and 8 and the protrusions 17 and 18 constitute the first positioning means of the present invention.

The flat panel display device 1 has a structure in which the display main body 2 and the woofer 21 are electrically connected simultaneously with the display main body 2 being placed on the stand 10. The structure of the connecting portion is shown in FIGS.

In the figure, reference numeral 25 denotes a connector which is the first connector of the present invention on the display body 2 side, and 26 is a connector which is the second connector of the present invention on the stand 10 side. The connectors 25 and 26 are fitted and connected. Thus, the electrical connection between the display main body 2 and the woofer 21 is achieved.
The stand-side connector 26 is fixedly held by a holding plate 27 provided on the base plate 13. On the holding plate 27, small protrusions 28 and 29, which are the second protrusions of the present invention, are vertically erected on both the left and right sides of the connector 26. Correspondingly, on the bottom of the display main body 2, Insertion holes 30 and 31 which are second insertion holes of the present invention are formed on the left and right sides of the connector 25. The insertion holes 30, 31 and the small protrusions 28, 29 constitute the second positioning means of the present invention.

  Here, the holding plate 27 has lower protrusions 32 and 33 on the lower surface side opposite to the small protrusions 28 and 29, and the lower protrusions 32 and 33 are passed through holes 34 and 35 formed in the base plate 13. It is fixed with screws 36 and 37 with washers from below and assembled in a movable state in the vertical direction. A leaf spring 38 is incorporated as an elastic member between the holding plate 27 and the base plate 13, and the connector 26 is elastically supported by the force of the plate spring 38 so that the connector 26 is always lifted together with the holding plate 27. .

  Then, by placing the display body 2 on the stand 10, the small protrusions 28 and 29 of the holding plate 27 are inserted into the insertion holes 30 and 31 of the display body 2, and the connectors 25 and 26 are fitted and connected. The main body 2 and the woofer 21 are electrically connected.

  In this case, when the display main body 2 is placed on the stand 10, the protrusions 17 and 18 of the stand 10 are first inserted into the insertion holes 7 and 8 of the display main body 2 as described above, and then the small protrusions 28 and 29 are inserted into the insertion holes. 30 and 31 are inserted. When the protrusions 17 and 18 of the stand 10 are inserted into the insertion holes 7 and 8 of the display main body 2, the lateral play between the display main body 2 and the stand 10 is about 1 mm, and then the small protrusions 28 and 29 are inserted. When the holes 30 and 31 are inserted, the backlash becomes 0.5 mm or less, and finally the connectors 25 and 26 are fitted and connected in this state. By adopting such a structure that absorbs backlash in stages, the connectors 25 and 26 are securely fitted and connected. Here, the connector 25 on the display body side is assembled with some play in order to absorb the fitting error with the connector 26 on the stand side.

  Further, in this connection portion, the stand-side connector 26 is always pressed against the display-body-side connector 25 by the force of the leaf spring 38 and is stably fitted so as not to come off. In this case, the stand-side connector 26 is adapted to be fitted to the display-body-side connector 25 in the vicinity of the middle point of the vertical movable range. That is, in this configuration, the movable range of the holding plate 27 holding the stand-side connector 26 with respect to the pedestal plate 13 is about 1.4 mm, but the holding plate 27 is lifted from the pedestal plate 13 by about 0.7 mm. The stand-side connector 26 is fitted with the display-body-side connector 25 in the vicinity of the intermediate point. For this reason, the connector 26 on the stand side is pressed against the connector terminal 25 on the display body side with a margin, and a more stable fitting is possible.

  As described above, the flat panel display device of this example has a structure in which the display main body 2 and the woofer 21 are electrically connected simultaneously with the display main body 2 placed on the stand 10. The electrical connection between the display main body 2 and the woofer 21 can be reliably performed without the need to do so.

  In particular, in this connection portion, a stable connection state is secured by adopting a structure in which the stand-side connector 26 is always pressed and fitted to the connector 25 on the display body side by the force of the leaf spring 38. For this reason, for example, even when the display main body 2 and the stand 10 are combined and transported in a combined state, the connectors 25 and 26 are not disengaged due to vibration during transport, and the connection reliability is improved. Guaranteed.

  In this example, the structure is such that the stand-side connector 26 is always pressed against the display body-side connector 25 by the force of the leaf spring, but this is reversed, that is, the display body-side connector 25 is pushed by the leaf spring force. Therefore, it may be configured to always press against the connector 26 on the stand side.

  As described above, the flat panel display device of this example has a structure in which the display body 2 and the woofer 21 are electrically connected simply by placing the display body 2 on the stand 10. When a connection error occurs due to foreign matter being caught, the user may use it without being aware of it, and may continue to be used without fully realizing the original acoustic performance of the flat panel display device.

Therefore, in this flat panel display device, when a connection error occurs in the connection portion, it is detected and a message is displayed on the screen.
FIG. 8 shows a means for detecting a connection error in the connection section. In this connection portion, the connectors 25 and 26 have four connection terminals 25a, 25b, 25c, 25d and 26a, 26b, 26c, 26d, respectively, of which two connection terminals 25a, 25b and 26a, 26b are for audio. Yes, that is, the audio connection terminals 25a, 25b and 26a, 26b connect the audio circuit 40 on the display body side and the woofer 21 on the stand side, whereby an audio signal is supplied from the audio circuit 40 to the woofer 21. Then, a heavy bass is output from the woofer 21.

  The remaining two connection terminals 25c, 25d and 26c, 26d are for connection detection, that is, here the connection terminals 25c, 25d are connected to the detection circuit 41 on the display body side, while the connection terminals 26c, 26d are in the stand. The U-turn connection portion 26e is short-circuited. The detection circuit 41 passes a detection current between the connection terminals 25c and 25d and 26c and 26d, and detects the connection state based on the presence or absence of the conduction. That is, when the connectors 25 and 26 are correctly connected, a current flows between the connection terminals 25c and 25d and 26c and 26d. However, when the connectors 25 and 26 are not correctly connected, the connection terminals 25c and 25d are connected. In this case, it is determined that there is a connection error.

  When a connection error is detected in the detection circuit, the character information stored in the memory in advance is output from the character signal generator (character generator) in response to a command from the control device (microcomputer). This is shown in FIG. As described above, the message 60 is displayed at the end of the screen 3 of the display main body 2 to notify the connection error.

  FIG. 9 shows a flow of a series of operations relating to this message display. First, when the user places the display main body on the stand (step 101) and turns on the power of the display main body (step 102), the detection circuit operates (step 103), and it is determined whether or not the connecting portion is correctly connected. (Step 104). As a result, if the connection is correct, the detection operation is terminated. If the connection is not correct, the character signal generator operates and a message is displayed on the screen of the display body (step 105). The user turns off the power of the display body (step 106), and then puts the display body on the stand again (step 101).

  As described above, in the flat panel display device of this example, a connection error when the display main body 2 and the woofer 21 are not correctly connected is detected, and a message indicating this is displayed on the screen 3. Since it is possible to avoid using the device as it is without noticing the connection mistake, the original acoustic performance can be sufficiently exerted and used.

  Next, a slide mechanism for adjusting the position of the speaker box 20 of the woofer 21 in accordance with the size of the display main body 2 placed on the stand 10 in the flat panel display device of this example will be described.

  The display main body 2 has a plurality of models having the same design and different sizes, and is roughly classified into a small model (37-42 inch screen) and a large model (50 inch screen). In any case, a terminal portion 44 in which various terminals 44a for external connection are arranged is provided on the back side of the machine body, and the position and size of the terminal portion 44 differ depending on the model. That is, in the large model, the terminal portion 44 is provided above and is formed larger than the small model. Accordingly, even in the case of a large model, the speaker box 20 is moved up and down particularly in the stand 10 of this example so that the external connection cord can be connected to the terminal 44a of the terminal portion 44 without the speaker box 20 getting in the way. The slide is adjustable.

  As shown in FIG. 11, in the stand 10 of this example, a back plate 46 is supported so as to be slidable in the vertical direction between guide rails 14 </ b> A and 15 </ b> A that constitute the core material of the column that is erected on the base plate 13. The speaker box 20 is fixed to the back plate 46 with screws 53. The back plate 46 is in surface contact with the guide rails 14 </ b> A and 15 </ b> A at both side end surfaces thereof and is fastened and fixed by screws 48. The guide rails 14A and 15A are formed with guide long holes 49 in the vertical direction, and the back plate 46 is slidably supported in the vertical direction through screws 48.

  With this configuration, the speaker box 20 slides in the vertical direction within the range in which the screw 48 moves along the guide long hole 49, and is fixed at an arbitrary sliding position by tightening the screw 48, thereby loosening the screw 48. It becomes the structure which can be slid again by.

  By making the speaker box 20 slidable in the vertical direction as described above, the stand 10 of this example can correspond to a plurality of types of display main bodies 2 having different sizes. That is, when the display main body 2 is a small model, the speaker box 20 is set to the normal position as shown in FIG. 2, and when the display main body 2 is a large model, the speaker box 20 is slid upward as shown in FIG. The external connection cord can be connected to the terminal 44a of the terminal portion 44 without the speaker box 20 getting in the way. Further, the speaker box 20 can be adjusted to an optimum height position in consideration of the acoustic effect.

  As shown in FIGS. 11 and 12, the speaker box 20 has a structure that is supported by the stand 10 via a cushion material 50. In this example, there are throttle portions 51 at a plurality of locations on the back plate 46 of the stand 10, and a ring-shaped cushion material 50 made of, for example, elastomer is fitted into a hole 51 a formed at the center of the throttle portion 51. Yes. A shaft column 52 protruding from the speaker box 20 is passed through the center hole of the cushion material 50, and this is fixed with a screw 53 with a washer.

  As described above, the structure in which the cushion material 50 is interposed between the speaker box 20 and the back plate 46 effectively absorbs the low-frequency vibration transmitted from the speaker box 20 by the cushion material 50, particularly when the output volume is high. It is possible to cut vibration transmission to the display main body 2, prevent the vibration and resonance of the sound in the display main body 2, and produce a clear sound.

  As mentioned above, although the Example of this invention was described, it cannot be overemphasized that this invention can take various embodiment other than being limited to the structure of this Example.

It is the perspective view seen from the front side of the flat panel display apparatus. It is the perspective view seen from the back side same as the above. It is a perspective view of a stand. It is the perspective view seen from the bottom face side in the state where the display main body was turned upside down. It is explanatory drawing of the operation | movement which mounts a display main body on a stand. It is a vertical front view which shows the structure of the connection part which electrically connects a display main body and a woofer. It is an exploded perspective view of the principal part same as the above. It is a block diagram of the detection means which detects the connection mistake of a connection part. It is a flowchart explaining the flow of operation | movement regarding the display of a message. It is a figure which shows the example of a display of a message. It is a disassembled perspective view which shows the structure of the slide mechanism of a speaker box. It is a cross-sectional view which shows the support structure of a speaker box. It is a perspective view which shows the state which slid the speaker box upwards.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Flat panel display apparatus, 2 ... Display main body, 10 ... Stand, 21 ... Woofer (low range speaker), 25, 26 ... Connector, 38 ... Leaf spring (elastic member)

Claims (3)

A flat panel display main body, a stand for supporting and location mounting the flat panel display main body is constituted by, in a flat panel display device comprising speakers built into the above stand,
A first connector provided on the flat panel display body;
A second connector provided on the stand for electrically connecting the flat panel display body and the speaker by fitting with the first connector;
When placing the flat panel display body on the stand, first positioning means for first positioning the flat panel display body and the stand;
When the flat panel display body is placed on the stand, the first positioning means positions the flat panel display body and the stand, and then positions the first connector and the second connector. Second positioning means for performing
With the flat panel display body placed on the stand, the first connector and the second connector are fitted and connected, and one of the first connector and the second connector The flat is characterized in that the side is fitted so that it is always pressed against the other side by an elastic member, and the connector on the one side is fitted to the connector on the other side at an intermediate point of the movable range. Panel display device. The first positioning means includes a first insertion hole provided in the flat panel display main body, and a first protrusion provided in the stand and inserted and coupled to the first insertion hole.
The second positioning means includes a second insertion hole provided in the flat panel display main body, and a second protrusion provided in the stand and inserted and coupled to the second insertion hole.
The gap in the fitting between the second insertion hole and the second protrusion is made narrower than the gap in the fitting between the first insertion hole and the first protrusion. The flat panel display device according to claim 1. 3. The structure according to claim 1, wherein the first connector is assembled to the flat panel display main body or the second connector is assembled to the stand with play. The flat panel display apparatus in any one.

Images