JP2007333960A - Overturn prevention apparatus for flat display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain an overturn protection apparatus for a flat display device, which is excellent in a space factor for installation, and which does not damage a wall, nor deteriorates the appearance. <P>SOLUTION: The overturn prevention apparatus for the flat display device comprising a flat display part, a leg part to support the display part, and a base seat part holding the lower side of the leg part, is so constructed that a locking member with a hook-like locking part at its tip, and a spring member applying downward force to the locking device is arranged under the flat display device so as to be vertically movable by a predetermined amount and so as not to be detachable, and while the hook-like locking part is elastically deformable, this hook-like locking part is provided with a slant part with the tapered tip and a stepped locking part located on the upper side of the slant part, so that the hook-like locking part can be locked in the reverse side hole edge of a through-hole bored in a mounting base member on which the flat display device is mounted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fall prevention device for thin display devices such as thin television devices and thin monitor devices using thin displays such as liquid crystal displays and plasma displays.

  A thin display device using a thin display such as a liquid crystal display or a plasma display has a thin display portion, a leg portion that supports the display portion, and a base portion (a flat plate-like mounting portion) that holds the lower end side of the leg portion. In many cases, the leg portion and the base seat portion are configured as separate members, or the leg portion and the base seat portion are configured as an integrated object.

  These thin display devices are more likely to fall to the front side or the back side of the panel surface due to their structure as compared with CRT (CRT) display devices. In general, a thin display device is often placed on a system rack or a TV stand, and if the thin display device falls to the front side of the panel surface due to vibration or impact, the panel is not only damaged. There is a risk that the thin display device may be injured by a collision with a person or a broken piece of glass.

  With regard to the fall prevention in such a thin display device, for example, a technique in which a flat display (thin display device) is fixedly attached to a corner wall (corner portion of a room) so that a room space can be effectively used ( Patent Document 1) has been proposed. Further, there is a measure for preventing a fall by providing a hook portion in the thin display device and also providing a hook portion on the house side so that the hook portions are engaged with each other.

  Further, as shown in FIG. 8, in the thin display device 50 including the thin display portion 51, the leg portion 52 that supports the display portion 51, and the base portion 53 that holds the lower end side of the leg portion 52. By providing a rotating leg 54 that can be moved in and out horizontally from the base 53 and pulling out the rotating leg 54 in a state where the thin display device 50 is mounted on the mounting table member 55 or the like, stability is improved and a fall is prevented. As shown in FIG. 9, the thin display portion 61, the leg portion 62 that supports the display portion 61, and the base seat portion 63 that holds the lower end side of the leg portion 62, as shown in FIG. 9. Is provided with an auxiliary base plate 64 that can be pulled out horizontally from the base portion 63, and the auxiliary base plate 64 is pulled out while the thin display device 60 is mounted on the mounting table member 65 or the like. To improve stability and fall Technique so as to stop (see Patent Document 3) are proposed.

Also, in AV equipment such as a display device, there are provided impact detection means for detecting vibrations and impacts, and a fall prevention lever (a fall prevention device) whose operation is controlled by the impact detection means. There has also been proposed a technique (Patent Document 4) in which, when sensed, a fall prevention lever appears at a position for preventing fall from a retracted position in the device.
JP-A-11-018022 JP-A-10-333594 JP 2000-047599 A JP 11-009373 A

  However, the method disclosed in Patent Document 1 and the method of providing a hook portion on the house side damage the house (wall surface, etc.) and damage the aesthetics of the house after removing the thin display device. There's a problem. Further, the technique disclosed in Patent Document 1 has a problem that the installation location of the thin display device cannot be easily changed. In the technique of providing the hook part on the house side, the hook part is exposed to the outside and is conspicuous. There is a problem that it looks bad.

  In the methods disclosed in Patent Documents 2 and 3, a space for pulling out the rotating leg and the auxiliary base plate to be in contact with the mounting surface of the mounting table member such as the TV table or the system rack is indispensable. This is a technique that can be applied only to a mounting table member that satisfies the conditions. Therefore, there is a problem that the application is limited only to the mounting table member having a relatively wide upper surface, and even if the mounting table member has a wide upper surface, the arrangement space for other articles to be mounted on the mounting table member There is a problem of impairing sex.

  In the method shown in Patent Document 4, the mechanism for preventing the fall is complicated, and since the number of parts and the number of assembly steps are large, there is a problem that leads to an increase in cost, and the mechanism for storing the fall prevention mechanism is included. There is a problem that considerable efforts are required to secure the space inside the device.

  The present invention has been made in view of the above points, and the object of the present invention is to provide an excellent installation space factor, and to prevent the thin display device from falling over without damaging the wall or deteriorating the appearance. It is to realize a prevention device. In addition, an object of the present invention is to realize a fall prevention device for a thin display device that allows a user to easily change a place where the thin display device is installed arbitrarily.

  In order to achieve the above-described object, according to the present application, there is provided a fall prevention device for a thin display device including a thin display portion, a leg portion that supports the display portion, and a base portion that holds a lower end side of the leg portion. In one invention, on the lower side of the thin display device, a locking member whose tip is a hook-shaped locking portion is disposed so that it can move up and down by a predetermined amount and cannot be removed, A spring member that applies a downward force to the locking member is provided, and the hook-shaped locking portion is capable of elastic deformation, and the hook-shaped locking portion has a tapered tip. Provided with an inclined portion and an engaging step portion located on the upper side of the inclined portion, and the saddle-like engaging portion is provided on the back side hole of the through hole formed in the mounting table member on which the thin display device is placed It is configured so that it can be locked to the edge.

  According to the present invention, a through-hole for passing a wiring formed in a mounting plate (upper plate) of a mounting table member such as a television table, or a mounting plate of a mounting table member for applying the present invention. In the state in which the hook-shaped locking portion of the locking member is aligned with the through-hole drilled in the (upper plate), the thin display device is mounted so that the back surface of the base seat is in close contact with the mounting plate The slanted portion of the hook-shaped locking portion is guided by the through-hole and enters the through-hole, and at the same time the hook-shaped locking portion is elastically deformed. After passing and passing through the through-hole, the hook-shaped locking portion is elastically restored, so that the hook-shaped locking portion cannot come out of the through-hole. That is, the hook-shaped locking portion of the locking member is, for example, squeezed and elastically deformed to pass through the through hole, and after passing through, elastically recovers and expands to the original, making it impossible to escape from the through hole. Thus, by so-called snap-in fitting (snap-in engagement), it is possible to attach to the mounting plate of the mounting table member by one-touch operation. Therefore, the mounting work for preventing the fall is extremely simple and easy, and the locking member provided on the lower side of the thin display device does not impair the space factor for installation at all, so the upper surface is small. Even if it is a mounting table member, it is possible to mount it to prevent it from falling, and further, it is possible to realize a tipping preventing device that does not damage the wall or impair the appearance. Also, by lifting the thin display device upward with the hook-shaped locking portion elastically deformed, the hook-shaped locking portion comes out of the through hole, so the user can arbitrarily change the location where the thin display device is installed It is possible to do it easily. Further, the locking member capable of moving up and down is given a downward bias in the downward direction by a spring member so as to be inserted into the through hole. However, when the thin display device is mounted on the mounting base member without the through hole In this case, due to the weight of the thin display device, the locking member is displaced upward against the spring force of the spring member, and the distal end surface of the hook-shaped locking portion is flush with the back surface of the base seat portion. Therefore, the thin display device can be mounted on the mounting table member having no through hole without any trouble.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
1 to 5 relate to a fall prevention device of a thin display device according to a first embodiment of the present invention, and FIG. 1 is also applied to second and third embodiments described later including the first embodiment. It is a perspective view which shows a thin display apparatus.

  In FIG. 1, 1 is a thin display device such as a thin television device or a thin monitor device using a thin display such as a liquid crystal display or a plasma display, 2 is a thin display portion of the thin display device 1, and 3 is a display. A leg portion 4 of the thin display device 1 that supports the portion 2 is a base portion (a flat mounting base portion) of the thin display device 1 that holds the lower end side of the leg portion 3. Reference numeral 5 denotes a mounting table member such as a TV stand or a system rack on which the thin display device 1 is mounted. Although not shown in FIG. 1, an upper plate (top plate) that is a mounting plate of the mounting table member 5 is provided. ) Is provided with a through hole for passing the wiring (in the case where the through hole for passing the wiring is not drilled, the user provides a through hole on the upper plate of the mounting table member 5). It may be drilled).

  In the first embodiment, the A portion of the thin display device 1 surrounded by a broken line in FIG. 1 cooperates with the through hole in the upper plate of the mounting table member 5 to prevent the thin display device 1 from falling. A mechanism is provided.

  FIG. 2A is a partial cutaway explanatory view showing the internal configuration of part A of FIG. 1 in a state where the thin display device 1 is lifted. In FIG. 2A, reference numeral 6 denotes a synthetic resin locking member, which is a columnar or cylindrical collar 7 and a collar-shaped locking part 8 integrally formed on the lower end side of the collar 7. The stopper portion 9 is formed integrally with the upper end side of the flange portion 7. The locking member 6 is attached to the lower side of the thin display device 1 so that the locking member 6 can move up and down by a predetermined amount with respect to the lower portion of the leg portion 3 and the base seat portion 4. 7 is slidably inserted through a through hole 13a of a partition wall 13 that divides a hollow chamber 11 formed in the lower portion of the thin display device 1 and a pedestal hole 12 having an opening at the lower end surface. Moreover, the stopper part 9 of the locking member 6 is located in the hollow chamber 11, and the locking member 6 cannot be removed.

  Reference numeral 10 denotes a spring member made of a compression coil spring interposed between the hook-shaped locking portion 8 of the locking member 6 and the partition wall 13, and the spring member 10 is in a downward direction with respect to the locking member 6. A force is applied, so that the locking member 6 is always given a downward biasing behavior. In the state shown in FIG. 2A in which the distal end surface of the hook-shaped locking portion 8 does not receive an upward force, the stopper portion 9 of the locking member 6 is moved to the partition wall 13 by the spring force of the spring member 10. While being in contact, the hook-shaped locking portion 8 of the locking member 6 protrudes downward from the back surface of the base seat portion 4.

  The hook-shaped locking portion 8 of the locking member 6 has an outer shape that is substantially frusto-conical, and has an inclined portion 8a having a tapered tip and a locking portion positioned above the inclined portion 8a. And a stepped portion 8b. Further, the hook-shaped locking portion 8 is formed with a vertically divided notch 8c, and a notch 7a is also formed at the lower portion of the flange portion 7 so as to correspond to the notch 8c. 2B is a view of the locking member 6 of FIG. 2A as viewed from below, and the notch 8c and the notch 7a are formed in a cross shape when viewed from below. By forming such a notch 8 c and notch 7 a, the hook-shaped locking portion 8 can be elastically deformed in a direction substantially perpendicular to the longitudinal direction of the hook portion 7.

  FIG. 3A shows a state in which the hook-shaped locking portion 8 of the locking member 6 enters a through hole formed in the upper plate (mounting plate) of the mounting table member 5. (B) shows the engaged state after the hook-shaped locking portion 8 of the locking member 6 has passed through the through hole formed in the upper plate of the mounting table member 5. In FIG. 3, 21 is an upper plate (top plate) that is a mounting plate of the mounting table member 5, and 22 is a circular through hole formed in the upper plate 21. The hole diameter of the through hole 22 is larger than the minimum diameter of the hook-shaped locking portion 8 and smaller than the maximum diameter of the hook-shaped locking portion 8.

  When the thin display device 1 is attached to the upper plate (mounting plate) 21 of the mounting table member 5, the front end side of the hook-shaped locking portion 8 of the locking member 6 is aligned with the through hole 22 of the upper plate 21. In this state, the thin display device 1 is placed on the upper plate 21 so that the back surface of the base seat 4 is in close contact with the upper plate 21. As a result, the locking member 6 is given downward bias by the spring member 10, so that the inclined portion 8a of the hook-shaped locking portion 8 is guided by the through hole 22 and enters the through hole 22, The hook-shaped locking portion 8 is elastically deformed so as to be squeezed, and the entire hook-shaped locking portion 8 passes through the through hole 22 (In the initial stage of this insertion operation, as shown in FIG. Thus, when the locking member 6 is displaced upward once and the spring member 10 is compressed, and the spring force of the compressed spring member 10 reaches a force sufficient to elastically deform the hook-shaped locking portion 8, the hook shape The locking portion 8 is elastically deformed and the locking member 6 is displaced downward, and the hook-shaped locking portion 8 passes through the through hole 22). After passing through the through-hole 22, the hook-shaped locking portion 8 is elastically restored and expands to its original shape, thereby making it impossible for the hook-shaped locking portion 8 to escape from the through-hole 22. That is, the so-called snap-in fitting (snap-in engagement) operation of the hook-shaped locking portion 8 makes it possible to attach the thin display device 1 to the upper plate 21 with a single touch, and reliably prevent the thin display device 1 from overturning. can do.

  In the example shown in FIG. 3, in a state where snap-in is engaged (snap-in engagement), the locking step portion 8 b of the hook-shaped locking portion 8 is connected to the back surface of the upper plate 21 around the through hole 22 (through hole 21. ), And the hook-shaped engaging portion 8 is in a completely locked state, and the thin display device 1 is in an immobile state. Thus, it is desirable that the locking step portion 8b of the hook-shaped locking portion 8 is in close contact with the back side hole edge of the through hole 21, and in order to do so, the locking step portion 8b and the base in the state of FIG. The distance L from the back surface of the seat portion 4 may be equal to the plate thickness of the upper plate (mounting plate) 21 of the mounting table member 5.

  Note that the present invention is applicable even when the locking step 8b of the hook-shaped locking portion 8 is not in contact with the back side hole edge of the through hole 21 when snap-in is engaged. FIG. 4 shows such a state, in which the locking step portion 8b of the hook-shaped locking portion 8 is slightly spaced from the back surface of the upper plate 21 '. That is, in the example shown in FIG. 4, the plate thickness of the upper plate 21 'is slightly thinner than the plate thickness of the upper plate 21 shown in FIG. Even in such a case as shown in FIG. 4, when vibration or impact is applied to the thin display device 1, even if the thin display device 1 may slightly rattle, Since the eight locking step portions 8b abut against the back side hole edge of the through hole 21, the hook-shaped locking portion 8 does not come out of the through hole 22 'of the upper plate 21'. A fall can be reliably prevented.

  When the thin display device 1 is removed from the attached state of the thin display device 1 to the upper plate shown in FIG. 3B or FIG. 4, the hook-shaped locking portion 8 is elastically deformed. Then, the thin display device 1 may be lifted upward so that the hook-shaped locking portion 8 is pulled out of the through hole.

  FIG. 5 shows a case where the thin display device 1 is placed on an upper plate (mounting plate) without a through hole of the mounting table member 5. As shown in FIG. 5, when the thin display device 1 is placed on an upper plate (mounting plate) 21 ″ having no through hole, the locking member 6 is spring member 10 by the weight of the thin display device 1. The top end surface of the hook-shaped locking portion 8 is flush with the back surface of the base seat portion 4, and the locking member 6 is placed inside the thin display device 1. Thus, the thin display device 1 can be placed on an upper plate (mounting plate) or a floor surface without a through-hole without any trouble, so that the fall prevention mechanism The same installation as that of a conventional thin display device is possible.

Second Embodiment
Next, a fall prevention device for a thin display device according to a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the arrangement location of the locking member 6 is not a lower portion of the leg portion 3 and the base seat portion 4 but a predetermined location of the base seat portion 4 away from the leg portion 3.

  FIGS. 6A and 6B are cutaway views of a main part of the fall prevention device of the thin display device according to the second embodiment of the present invention, and FIG. 6A shows a snap-in fitting state. FIG. 6B shows a state in which the thin display device is placed on an upper plate (mounting plate) having no through hole. In FIG. 6, the same components as those in the first embodiment are denoted by the same reference numerals.

  In the second embodiment, the locking member 6 is disposed at a predetermined position of the base seat 4 away from the leg 3 so that it can move up and down by a predetermined amount and cannot be removed. In the snap-in fitting state of FIG. 6A in which the hook-shaped locking portion 8 of the locking member 6 has passed through the through hole 22 of the upper plate 21, the stopper portion 9 of the locking member 6 is fixed to the base seat portion 4. It fits in the recessed part 31 provided in the upper surface. On the other hand, when the thin display device 1 is placed on the upper plate (mounting plate) 21 ′ having no through-hole, as shown in FIG. A part of the part 9 and the flange part 7 protrude upward from the upper surface of the base seat part 4.

  By configuring in this way, in the second embodiment, the user can determine at a glance whether or not the mounting state (snap-in fitting state) for preventing overturning is in accordance with the appearance state of the stopper portion 9 to the outside. It becomes possible to identify.

<Third Embodiment>
Next, a fall prevention device for a thin display device according to a third embodiment of the present invention will be described with reference to FIG. In the third embodiment, a locking member and a spring member are incorporated in a unit frame separate from the thin display device to construct a unitized locking block. It is fixed to the lower part of the device.

  FIG. 7 is a cut-away view of the main part of the overturn prevention device of the thin display device according to the third embodiment of the present invention, which is a diagram showing a state in which the thin display device is lifted. In FIG. 7, the same components as those in the first and second embodiments are denoted by the same reference numerals.

  In FIG. 7, reference numeral 42 denotes a unit frame, and the locking member 6 is attached to the unit frame 42 so that it can move up and down by a predetermined amount and cannot be removed. Further, the flange portion 7 of the locking member 6 is slidably inserted into the through hole 45a of the partition wall 45 that partitions the hollow chamber 43 formed in the unit frame body 42 and the hole 44 having an opening at the lower end surface. Yes. The stopper portion 9 of the locking member 6 is located in the hollow chamber 43. The spring member 10 is interposed between the hook-shaped locking portion 8 of the locking member 6 and the partition wall 45, and applies a downward force to the locking member 6.

  As described above, the block in which the locking member 6 and the spring member 10 are incorporated in the unit frame body 42 is a unitized locking block 41. This unitized locking block 41 is bonded to the unit frame 42 in FIG. As shown, it is fixed to the lower part of the thin display device 1.

  With this configuration, in the third embodiment, the unitized locking block 41 is fixed to the thin display device 1 by retrofitting, thereby realizing the thin display device 1 having a fall prevention function. it can.

It is a perspective view which shows the thin display apparatus applied in each embodiment of this invention. It is a figure which shows the back of the principal part cutting | disconnection figure of the fall prevention apparatus of the thin display apparatus which concerns on 1st Embodiment of this invention, and the hook-shaped locking part of a locking member. In the overturn prevention device for a thin display device according to the first embodiment of the present invention, the state of the locking member being inserted into the through hole of the hook-shaped locking portion and the hook-shaped locking portion of the locking member are snap-in members. It is a principal part cutting figure which shows the state combined. It is a principal part cutting figure which shows the state by which the hook-shaped latching | locking part of the latching member was snap-in-engaged in the fall prevention apparatus of the thin-type display apparatus which concerns on 1st Embodiment of this invention. It is a principal part cutting figure in the state which mounted the thin display apparatus in the upper board (mounting board) without a through-hole in the fall prevention apparatus of the thin display apparatus which concerns on 1st Embodiment of this invention. In the overturn prevention device for a thin display device according to the second embodiment of the present invention, a thin display is shown on the upper plate (mounting plate) in which the hook-like locking portion of the locking member is snap-in engaged and there is no through hole. It is a principal part cutting view which shows the state which mounted the apparatus. It is a principal part cutaway view of the fall prevention apparatus of the thin display apparatus concerning 3rd Embodiment of this invention. It is a perspective view which shows an example of the fall prevention apparatus of the conventional thin display apparatus. It is a perspective view which shows another example of the fall prevention apparatus of the conventional thin display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thin display apparatus 2 Display part 3 Leg part 4 Base seat part 5 Mounting base member 6 Locking member 7 Hook part 7a Notch 8 Hook-like locking part 8a Inclined part 8b Locking step part 8c Notch 9 Stopper part 10 Spring Member 11 Hollow chamber 12 Pedestal hole 13 Partition wall 13a Through hole 21, 21 ', 21 "Upper plate (mounting plate)
22, 22 'Through-hole 31 Recessed part 41 Unitized locking block 42 Unit frame body 43 Hollow chamber 44 Hole 45 Partition wall 45a Through-hole

Claims (8)

A fall prevention device for a thin display device comprising a thin display portion, a leg portion supporting the display portion, and a base portion holding the lower end side of the leg portion,
A locking member whose tip is a hook-shaped locking portion is provided on the lower side of the thin display device, and the hook-shaped locking portion of the locking member is placed on the mounting table on which the thin display device is mounted. A fall prevention device for a thin display device, wherein the device can be locked to a back side hole edge of a through hole formed in a member. In the fall prevention device of the thin display device according to claim 1,
The locking member includes the hook-shaped locking portion and a hook portion integrally connected thereto, and the hook-shaped locking portion is elastically deformable in a direction substantially perpendicular to the longitudinal direction of the hook portion. In addition, the saddle-like locking portion has an inclined portion having a tapered tip and a locking step portion positioned on the upper side of the inclined portion. In the fall prevention device of the thin display device according to claim 2,
An overturn prevention device for a thin display device, wherein the hook-shaped locking portion of the locking member has a substantially frustoconical outer shape and is formed with a vertically divided notch. In the fall prevention device of the thin display device according to any one of claims 1 to 3,
The locking member is arranged so that it can move up and down by a predetermined amount on the lower side of the thin display device, and cannot be removed from the lower side of the thin display device,
A spring member for applying a downward force to the locking member is provided, and the locking member is imparted with a downward bias in the downward direction by the spring member. apparatus. In the fall prevention device of the thin display device according to claim 4,
When the flat surface of the mounting table member on which the thin display device is placed comes into contact with the distal end surface of the hook-shaped locking portion of the locking member, due to the weight of the thin display device, the spring member Falling down of a thin display device, wherein the locking member is displaced upward against a spring force, and the tip surface of the hook-shaped locking portion is flush with the back surface of the base seat portion Prevention device. In the fall prevention device of the thin display device according to claim 5,
When the front end surface of the hook-shaped locking portion is flush with the back surface of the base seat portion, the entire locking member is stored in the thin display device. A fall prevention device for display devices. In the fall prevention device of the thin display device according to claim 5,
A thin structure in which an upper portion of the locking member protrudes above the base seat portion when a front end surface of the hook-shaped locking portion is flush with a back surface of the base seat portion. A fall prevention device for display devices. A fall prevention device for a thin display device comprising a thin display portion, a leg portion supporting the display portion, and a base portion holding the lower end side of the leg portion,
A locking member disposed so that the unit frame can move up and down by a predetermined amount and cannot be removed from the unit frame, and a downward force is applied to the locking member. Providing a unitized locking means in which a spring member to be applied is incorporated in the unit frame, and attaching the unitized locking means to the thin display device;
The hook-shaped locking portion provided at the tip of the locking member can be locked to the back side hole edge of the through hole formed in the mounting table member on which the thin display device is mounted. A fall prevention device for a thin display device.

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