JP3246594B2 - Large display switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching device for replacing or maintaining display means of a large display.

[0002]

2. Description of the Related Art In general, large displays for guidance and advertisements installed on the premises of a station or underground passages are provided with a frame on which a transparent panel is framed on the front side of a frame housing a light source. Display means such as display paper is mounted on the frame or frame, or between the frame and the frame, but it is necessary to periodically replace the display means and light source and maintain the inside. Therefore, the frame is configured to be openable and closable with respect to the frame.

However, the conventional opening / closing mechanism merely rotates the frame body about the rotation axis with respect to the frame body, so that a sufficient work space cannot be obtained unless the frame body is opened wide, and the work is troublesome. In addition, it sometimes hindered traffic when working. Therefore, the present inventors have proposed a large-sized display opening / closing device which can secure a particularly large work space and can easily replace and maintain display means and components (Japanese Patent Application No. Hei 6-166399). issue).

[0004]

However, the above-mentioned large-sized display body has only one frame body in which the display panels housed in the frame are framed, and the inner and outer frame bodies are arranged in double. The development of a switchgear has been desired.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and in a large-sized display body on which inner and outer frames are arranged, the inner and outer frames can be easily opened and closed, and replacement and maintenance of display means and parts can be easily performed. An object of the present invention is to provide a large-sized display opening and closing device that can be operated.

[0006]

In order to achieve the above object, an opening and closing device for a large-sized display device according to the present invention comprises an inner and outer frame body in which a display panel is framed in a front opening of a frame housing a light source. In the opening and closing device for a large display body, the shafts are arranged on both sides facing each other of the frame, facing each other, while the upper portions on both sides of the inner frame and the outer frame are respectively provided on the shafts. A first bearing portion rotatably engaged with the second bearing portion;
And the first bearing of the inner frame and the second bearing of the outer frame are rotatably supported by engaging with the shaft.

It is preferable that the first bearing and the second bearing are engaged side by side with the shaft.

[0008] Further, the first bearing portion is an extension arm projecting from the upper portion on both sides of the inner frame body and engaging with the shaft body,
The second bearing portion may be formed on an upper portion on both sides of the outer frame, and may be configured as an engagement groove that engages with the shaft.

Further, it is preferable that the first bearing portion is engaged with the shaft between upper portions on both sides of the frame and upper portions on both sides of the outer frame.

[0010] It is preferable that the first bearing portion and the second bearing portion are configured to be detachable from the shaft.

[0011] Similarly, in a large-sized display opening and closing device in which an inner and outer frame body in which a display panel is framed in a front side opening of a frame body housing a light source is openably and closably provided, A first shaft and a second shaft are respectively disposed on upper portions on both sides of the frame body, and the first shaft and the second shaft are respectively disposed on opposite upper portions on both sides of the frame. A first bearing portion and a second bearing portion that are combined may be formed.

A bearing body having the first bearing portion and the second bearing portion is fixed to the frame body, and the second shaft body is mounted on the bearing body outside the frame body. The guide arm to be guided is rotatably supported from a substantially vertical state to a horizontal state,
It is preferable that the guide arm is formed with an engagement portion that can be engaged with the second shaft body above the second bearing portion when the guide arm is in a vertical state.

Further, at least the second bearing portion of the bearing body may be formed by cutting out upper portions on both sides of the frame body.

Further, in the opening / closing device, it is preferable that a supporting edge engageable with the inner frame is provided on the back side of the inner frame.

[0015]

According to the first aspect of the present invention, the double inner frame and the outer frame are pivoted together with the shaft of the frame so as to be opened and closed to easily perform operations such as replacement of display means and light source parts and maintenance. be able to.

According to the second or fourth aspect of the present invention, the inner and outer frames can be rotatably mounted even if the frame has only one shaft.

According to the third aspect of the present invention, the inner frame is engaged with the shaft via the extension arm, and a rotational moment acts on the inner frame, so that the inner frame is urged forward, and the inner frame is urged forward. The body is pressed against the outer frame, which has the effect.

According to the fifth aspect of the present invention, the first bearing of the inner frame and the second bearing of the outer frame can be engaged and disengaged side by side with the shaft of the frame. The body can be removed from the frame, and maintenance and other operations can be performed more easily and well.

According to the sixth aspect of the present invention, the first and second frames are provided on the inner and outer frames.
Since the first and second shafts are arranged on the frame, the frame body is provided with the first bearing and the second bearing which engage with the first and second shafts, respectively. In addition, the inner and outer frames can be reliably suspended.

According to the invention of claim 7, when the outer frame and the inner frame are detached, at least the outer frame can be supported on the guide arm, so that the detaching operation can be performed safely and reliably.

According to the eighth aspect of the present invention, since the inner or outer frame can be opened and closed in the cutout portion of the frame, the structure of the opening and closing device can be simplified, and the number of members can be reduced.

According to the ninth aspect of the present invention, the inner frame can be positioned by the supporting edge, and the mounting operation is facilitated.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing a part of a large display body according to the present invention in a cutaway view, FIG. 2 is an enlarged sectional view taken along line XX of FIG. 1, and FIG. FIG. 4 is an exploded perspective view of a main part of the opening / closing device, FIG. 5 is an explanatory view of a closing mode of the inner and outer frames, and FIG. 6 is an explanatory view of a rotating state of the outer frame. FIG. 7 is an explanatory view of an opening mode of the inner and outer frame members.

In each of the drawings, reference numeral 1 denotes a box-shaped frame.
It is framed in a square from c.

Sockets 2 are fixed inside the vertical frame 1c of the box-shaped frame 1, and a plurality of long light sources (fluorescent lamps) 3 are mounted on these sockets 2 in parallel. The ballast 4 and the earth leakage breaker 5 are fixed to the lower frame 1b. Reference numeral 6 denotes a support edge which is covered with a pile weather seal 7.

Next, at the opening on the front side of the frame 1, inner and outer frame members 8 and 9 in which display panels are framed are double-laid.

The inner frame 8 comprises an inner panel 10 made of a translucent panel such as a milky white acrylic plate and an upper frame 8a and a lower frame 8b.
And a frame formed by fitting into fitting grooves 11 formed in the left and right vertical frames 8c. In addition, a display means 12 such as a display film or printed paper on which an advertisement, an advertisement, a guide, or the like is displayed is attached to the inner panel 10.

The outer frame body 9 is formed by connecting an outer panel 13 made of a transparent panel such as a transparent acrylic plate or a glass plate to an opening edge 14 of an upper frame 9a, a lower frame 9b and left and right vertical frames 9c and a supporting edge 15 on the back side thereof. And a frame is assembled via a pile weather seal 7.

Next, the inner and outer frame members 8 and 9 are supported rotatably with respect to the frame member 1. That is, a shaft body 16 with a brim is arranged above both sides (vertical frame 1b) of the frame body 1 facing left and right facing each other. On the other hand, as shown in detail in FIGS. 4 (a) and 4 (b), a first bearing 17 is formed on the inner frame 8, and a second bearing 18 is formed on the outer frame 9. The first bearing portion 17 is formed in an inverted J-shape at the tip of an extension arm 19 that protrudes forward (front side of the opening) from both left and right upper portions of the inner frame 8. 19a, 1
9b is a reinforcing material. The second bearing portion 18 is an engagement groove formed at an upper portion on both sides of the outer frame body 9 so as to engage with the shaft body 16. In addition, an engaging groove 18 'is formed in a portion corresponding to the vertical frame 9c also in the corner tool 20 connecting the upper frame 9a and the vertical frame 9c of the outer frame body 9. The first bearing portion 17 of the inner frame member 8 and the second bearing portion 18 of the outer frame member 9 are respectively engaged with the shaft member 16 side by side.
The outer frame body 9 is rotatably supported by the shaft body 16 so as to be detachable.

The back of the inner frame 8 is in contact with the supporting edge 6 of the frame 1. The front of the inner frame 8 is the outer frame 9
Is in contact with the back of A lock 21 such as a ball catch structure is provided at a lower portion of the inner frame body 8 to regulate opening and closing. Further, a bent portion 22 is formed on the back side of the lower part of the outer frame body 9, and the convex portion 2 formed on the lower frame 1 b of the frame 1 when closed.
3, the outer frame 9 is lifted to release the engagement with the shaft 16. For this reason, a relief groove 18a for engaging and disengaging from the shaft 16 is formed in the second bearing portion 18 in a continuous notch shape.

Next, the operation of the opening / closing device having the above construction will be described. In the closed state, the first bearing portion 17 of the inner frame 8 and the second bearing 17 of the outer frame 9 as shown in FIGS. The bearings 18 are respectively attached to the shaft 16 so as to be detachable. At this time, the first bearing portion 17 is disposed between the upper portion on both sides of the frame 1 and the upper portion on both sides of the outer frame 9.
6 is engaged.

When the outer frame 9 is opened for replacement or maintenance work of the display means 12 and the light source 3, etc., the outer frame 9 is lifted and disengaged from the projection 23 of the lower frame 1b.
When the lower part of the outer frame body 9 is pulled toward the front side as in the above, the outer frame body 9 can be opened by rotating about the shaft body 16. By maintaining this state, the back side of the outer frame 9 and the inner frame 8
Can perform simple tasks on the front side. In addition, the outer frame 9
When it is desired to remove the outer frame body 9, the shaft body 16 is further lifted so that the shaft body 16 can be released from the escape groove 18 a of the second bearing portion 18.
Then, when the outer frame body 9 is further pulled out to the front side, the shaft body 16 comes off the escape groove 18a, and the outer frame body 9 becomes free.

Similarly, when the inner frame 8 is opened, the outer frame 9 and the inner frame 8 are simultaneously pulled out together with the outer frame 9 by lifting the inner frame 8 and pulling it out as shown in FIG. 16
Opening operation by turning around. Further, when removing the inner frame 8, the outer frame and the inner frame are removed together or the outer frame 9 is removed, and then the inner frame 8 is lifted to remove the extension arm 19 from the shaft 16. It can be removed from the body 1.

When the inner frame body 8 and the outer frame body 9 are rotated and opened, it is only necessary to hold the stay (not shown) by using a stay as a bar. In addition, it is preferable to form handle portions 12a and 12b in the lower frame of the inner frame 8 and the outer frame 9.

As described above, the double inner and outer frame members 8 and 9 are pivotally moved together with the shaft member 16 of the frame 1 to open and close.
Operations such as replacement and maintenance of the display means 12 and the three light sources can be easily and reliably performed.

Further, the inner and outer frame members 8 and 9 can be attached to the left and right shaft members 16 of the frame 1 individually or together so as to be rotatable and openable.

Further, the inner frame 8 is engaged with the shaft 16 via the extension arm 19, and a rotational moment acts on the inner frame 8, so that the inner frame 8 is urged forward, and the inner frame 8 Is pressed against the outer frame body 9.

Further, the first bearing portion 17 of the inner frame 8 is provided.
And the second bearing portion 18 of the outer frame body 9 can be engaged and disengaged alongside the shaft 16 of the frame body 1, so that the inner and outer frame bodies 8 and 9 can be removed from the frame body 1 for maintenance and the like. Work can be performed more easily and well.

FIGS. 8 and 9 show the inner frame 8 and the outer frame 9 provided with shafts at the upper left and right sides, respectively.
10 is an example of a large display body in which engagement portions of the above-mentioned shafts are formed on the upper left and right sides of the frame body 1 in which the inner frame 8 and the outer frame 9 are placed. L-shaped bracket 3 as shown in
0 (not necessarily L-shaped), and each L-shaped bracket 30
Is formed with a first shaft body 31 and a second shaft body 32.

Further, bearing bodies 33 each having the shape shown in FIG. 1 are provided on both left and right sides of the frame body 1 facing each other. Each of the bearing bodies 33 has the first shaft body 31 and the second shaft body. The first bearing portion 34 and the second bearing portion 35 respectively engaging with the
Are formed in a groove shape. The first shaft 31 of the inner frame 8 and the second shaft 32 of the outer frame 9 engage with the first bearing portion 34 and the second bearing portion 35, respectively. The inner frame 8 and the outer frame 9 are rotatably supported so as to be detachable.

A guide arm 36 for guiding the first shaft 31 to the outside of the frame 1 is rotatably supported on the bearing 33 so as to be rotatable from a substantially vertical state to a horizontal state. As shown in FIG. 10, the guide arm 36 forms a guide portion 37 that is obliquely inclined from the base side to the distal end side of the one piece 36 a bent into an L-shape. Forming a groove-shaped (or concave) engaging portion 38 for preventing the falling off, and forming a stopper 39 on the stopper end face for horizontally supporting the guide arm 36 by notching the base side of the other piece 36b, The base of the one piece 36 a is rotatably supported by the bearing 33, and the support shaft 40 is disposed below the second bearing 35. And the guide arm 36
Rotates about 90 degrees from the vertical position until the notch-side end surface of the other piece 36b comes into contact with the end surface of the bearing body 33 and stops in a substantially horizontal state. In the vertical state, the guide arm 36 is engaged. The portion 38 is located above the second bearing portion 35, and is provided so that the engaging portion 38 at the tip of the guide arm 36 projects to the front side of the frame 1 when it is in a horizontal state. The other structures of the frame 1 and the inner and outer frames 8, 9 are substantially the same as those described above, and the same members are denoted by the same reference numerals. A frame 41 is provided on the outer periphery of the outer frame body 9.

Also in this example, the rear surface of the inner frame 8 is arranged so as to be able to contact the supporting edge 6 of the frame 1 and the lower portions of the inner frame 8 and the outer frame 9 are respectively provided below. Frame 1b
Engaging portions 44 and 4 that engage with the convex portions 42 and 43 provided on the
5 are formed. The engagement between the two is released by lifting the inner frame 8 or the outer frame 9.

Next, the operation of the opening / closing device having the above structure will be described. In the closed state, as shown in FIG. 8, the first shaft 31 and the second shaft 31 of the inner frame 8 and the outer frame 9 are connected to each other. Of the bearing body 33 of the frame 1 is the first bearing portion 34
And the second bearing portion 35.

When the frame is opened to replace the display means 12 or the light source 3 or to perform maintenance work, first, similarly to the above-described example, the outer frame 9 is lifted as shown in FIG. Is disengaged, the second shaft 32 is detached from the second bearing 35, and then the outer frame 9 is pulled out, so that the guide arm 36 is also engaged with the engaging portion 38 by the second shaft 32. The second shaft 32 is rotated so as to be horizontal with the
You will be guided to the front. The second shaft 32 is supported by an engaging portion 38 at the tip of a guide arm 36 projecting to the front side of the frame 1. Further, by pulling out the lower part of the outer frame body 9, the second shaft 32 of the outer frame body 9 is engaged with the engaging portion 38 of the guide arm 36.
When the display unit 1 is opened, the work space for opening can be secured large.
2 and replacement and maintenance of parts can be performed easily and reliably. Furthermore, by detaching the second shaft 32 from the engaging portion 38, the outer frame 9 can be detached from the guide arm 36 to easily and reliably perform operations such as replacement and maintenance.

As shown in FIG. 12, the inner frame body 8 is once lifted to disengage from the convex portion 42 of the lower frame 1b, and then rotated about the first shaft body 31 together with the outer frame body 9. Can be opened and operated. Furthermore, when removing the inner frame 8,
The first shaft body 31 may be detached from the first bearing portion 34, pulled out along the guide arm 36 in a horizontal state, and detached from the guide arm 36.

When the detached inner frame 8 is put in the frame 1 after completion of work such as replacement of parts and maintenance, the first shaft 31 is moved from above the guide arm 36 to the bearing 33 as opposed to the removal.
It is lifted and pushed in along the upper side to engage the first bearing portion 34, and the lower portion is engaged with the convex portion 42 of the lower frame 1b. At the time of pushing, the rear surface of the inner frame 8 is engaged with the supporting edge 6 of the frame 1 and positioned, so that the inner frame 8 is not pushed more than necessary. The outer frame body 9 connects the second shaft body 32 to the engaging portion 38 of the guide arm 36.
When the guide arm 36 is rotated upward and stopped vertically, the outer frame 9 is lowered and the lower portion is engaged with the convex portion 43 of the lower frame 1b. ,
What is necessary is just to make the 2nd shaft body 32 engage with the 2nd bearing part 35.

As described above, when the outer frame 9 and the inner frame 8 are opened and closed or removed, the outer frame 9 and the inner frame 8 can be supported on the guide arm 36, so that the removal operation can be performed safely and reliably.

A first shaft 31 and a second shaft 32 are provided on the inner and outer frame members 8 and 9, and the frame 1 is provided with the first shaft 31 and the second shaft 32. Since the first bearing portion 34 and the second bearing portion 35 that engage with each other are provided, the inner and outer frame members 8 and 9 can be reliably suspended.

It is not necessary to form the bearing part integrally with the bearing body 33. For example, as shown in FIG. 13, a first bearing portion 34 is formed on a bearing body 33, and a second bearing portion 35 is formed on a vertical frame 1.
Notch is formed directly on the upper part of the outer frame 9 and the guide arm 36 is rotatably supported on the bearing 33 via a support shaft 40 and fixed to the vertical frame 1c. Two shafts 32 may be formed.

As shown in FIG. 14, the first bearing portion 34
And the second bearing portion 35 are formed by cutting out the flat bearing body 33 and the upper part of the vertical frame 1c so that the first shaft body 31 and the second shaft body 32 are engaged with each other. Good. In this case, the notch is formed above the vertical frame 1c,
Even if the width of the groove of the bearing portion 34 is formed wider than that of the second bearing portion 35, the first shaft 31 may be formed to have a diameter larger than that of the second shaft 32 correspondingly. Good. According to this, the first shaft body 31 does not engage with the second bearing portion 35 when the inner frame body 8 is removed or attached.

According to the above configuration, since the inner and outer frame members 8 and 9 can be opened and closed in the cutout portions of the frame 1, the structure of the opening and closing device can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view showing a part of a large-sized display device according to the present invention, which is cut away.

FIG. 2 is an enlarged sectional view taken on line XX of FIG. 1;

FIG. 3 is an enlarged sectional view taken on line YY of FIG. 1;

FIGS. 4A and 4B are exploded perspective views of a main part of the switchgear.

FIG. 5 is an explanatory view of a closing mode of the inner and outer frames.

FIG. 6 is an explanatory view of a rotating state of the outer frame body.

FIG. 7 is an explanatory view of an opening mode of the inner frame.

FIG. 8 is a longitudinal sectional view of another example of the switchgear.

FIG. 9 is a cross-sectional view of the switchgear.

FIG. 10 is an exploded perspective view of a main part of the switching device.

FIG. 11 is an explanatory view of an opening mode of an outer frame of the opening and closing device.

FIG. 12 is an explanatory view of an opening mode of an inner frame of the opening and closing device.

FIG. 13 is a longitudinal sectional view of a main part of still another example of the switchgear.

FIG. 14 is a longitudinal sectional view of a main part of still another example of the switchgear.

[Explanation of symbols]

 Reference Signs List 1 frame 3 light source 8 inner frame 9 outer frame 16 shaft 17 first bearing 18 second bearing 31 first shaft 32 second shaft 34 first bearing 35 second Bearing part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-241517 (JP, A) JP-A-62-192786 (JP, A) JP-A-8-328491 (JP, A) 10977 (JP, U) 50-22095 (JP, U) 90-90,990 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G09F 13/04 G09F 15 / 00

Claims (9)

(57) [Claims] An opening / closing device for a large display body in which inner and outer frame members each having a display panel framed therein are arranged in an opening portion on a front side of a frame body housing a light source, wherein a shaft body is provided on both opposite sides of the frame body. Are arranged facing each other, and a first bearing portion and a second bearing portion rotatably engaged with the shaft are respectively formed on upper portions on both sides of the inner frame and the outer frame, A large display body opening / closing device, wherein the first bearing portion of the inner frame and the second bearing portion of the outer frame are rotatably supported by engaging with the shaft. 2. The opening / closing device for a large display body according to claim 1, wherein the first bearing portion and the second bearing portion are engaged side by side with the shaft. 3. The first bearing portion is an extension arm projecting from the upper portion on both sides of the inner frame and engaging with the shaft, and the second bearing portion is formed on the upper portion on both sides of the outer frame. The opening / closing device for a large display body according to claim 1, wherein the opening / closing device is an engagement groove that engages with the shaft body. 4. The large display body according to claim 1, wherein said first bearing portion is engaged with said shaft body between upper sides on both sides of said frame body and upper sides on both sides of said outer frame body. apparatus. 5. The opening and closing device for a large display body according to claim 1, wherein the first bearing portion and the second bearing portion are configured to be detachable from the shaft. 6. An opening and closing device for a large display body in which an inner and outer frame body in which a display panel is framed in a front opening of a frame body housing a light source is openably and closably arranged. A first shaft and a second shaft are respectively disposed on the upper portions on both sides, and a first shaft and a second shaft respectively engaged with the first shaft and the second shaft are disposed on opposite upper portions on both sides of the frame. An opening and closing device for a large display body, wherein a first bearing portion and a second bearing portion are formed. 7. A bearing body having the first bearing portion and the second bearing portion is fixed to the frame body, and the second shaft body is attached to the bearing body outside the frame body. A guide arm that guides the guide arm so as to be rotatable from a substantially vertical state to a horizontal state. The guide arm corresponds to the second bearing portion above the second bearing portion when the guide arm is in the vertical state. 7. The opening / closing device for a large display body according to claim 6, wherein an engaging portion engageable with the second shaft body is formed. 8. The opening and closing device for a large display body according to claim 6, wherein at least a second bearing portion of the bearing body is formed by cutting out upper portions on both sides of the frame body. 9. The opening / closing device for a large display body according to claim 1, wherein a support edge engageable with the inner frame is provided on a back side of the inner frame.