JPH0723989B2 - Screen device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen device mainly used for displays.

[0002]

2. Description of the Related Art As a display device for advertisement, a panel is attached to the front side of a frame body, and a photograph or drawing of a landscape, a person, an illustration, etc. on the panel surface is illuminated by an internal fluorescent lamp. A panel type is conventionally known.

By the way, in the above-mentioned electro-optical panel type display device, since the display image is fixed, there is a problem that the display effect is poor.

An object of the present invention is to provide a screen device excellent in display effect which can alternately display two kinds of display images when used as a display device.

[0005]

In order to solve the above problems, according to the present invention, a rail member is provided inside a rectangular frame, and a carriage provided movably along the rail member. A pair of winding shafts to which a rotational force is applied in the winding direction is rotatably attached, and the winding end ends of the screen wound by the winding shafts are connected to the fixed portions at both ends in the moving direction of the carriage. However, a structure including a moving means for reciprocating the carriage along the rail member is adopted.

Here, as a moving means, a pair of pulleys is rotatably attached to both ends of the rail member, and a belt is stretched between the pulleys. Supported movably and rotatably in a direction intersecting the direction, a part of the belt is connected to the belt connecting shaft, and one of the pair of pulleys is rotated in one direction by a motor. Can be used.

[0007]

In the screen device having the above construction, the carriage is reciprocated along the rail member, and the movement of the carriage causes the screen to be pulled out from the winding shaft on the trailing side in the moving direction and to advance in the moving direction. The screen is sequentially wound by the take-up shaft on the side, and a pair of screens are alternately stretched.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 4 show a first embodiment of a screen device according to the present invention. As shown in the figure, a transparent plate 2 made of a glass plate, a resin plate or the like is provided on the front side of the rectangular frame 1.
Is installed.

The frame 1 has a back plate 3, a pair of rail members 4 are attached to both sides of the inner surface of the back plate 3, and both ends of a rail member 5 are connected to the pair of rail support members 4. There is. A plurality of receivers 6 are attached to the upper and lower ends of the rail support member 4, and both ends of the fluorescent lamp 7 are supported by the receivers 6 facing each other on the left and right.

The rail member 5 has a guide groove 8 on the front side of the upper and lower surfaces, and a carriage 10 having a plurality of rollers 9 which can roll along the guide groove 8 is movable along the rail member 5. Supported by.

The carriage 10 is reciprocated along the rail member 5 by the operation of the moving device 11.

Here, the moving device 11 includes a drive pulley 13 which is rotated by a motor 12 at both ends of the rail member 5.
And a driven pulley 14 are provided, and a part of the belt 15 spanning between the pulleys 13 and 14 is connected to the carriage 10. At the time of the connection, a guide plate 16 is provided on the back side of the carriage 10 at a required distance from the back surface, and a guide hole 17 long in the direction intersecting the moving direction of the carriage 10 is provided in the guide plate 16. Form, carriage 10 and guide plate 1
6, a belt connecting shaft 19 to be inserted into the guide hole 17 is provided in the inner plate 18 assembled between the inner plate 18 and the inner plate 18, and a three-pronged piece 20 is formed at a tip end portion of the belt connecting shaft 19 located outside the guide hole 17. A loop portion 15a provided on a part of the belt 15 is connected to one of the three-forked pieces 20.

The driven pulley 14 is rotatably supported by a bearing 21, and the bearing 21 is movably supported along an elongated hole 22 formed in the rail member 5, and a belt is supported by a spring 23 connected to the bearing 21. 15 is held at a predetermined tension.

The carriage 10 has a support frame 24 at its front part, and the support frame 24 rotatably supports the upper and lower ends of the two winding shafts 25a and 25b. Each winding shaft 25a,
Screens 26a and 26b are wound around 25b, and connecting bars 27 attached to the end ends of the screens 26a and 26b are connected to connecting shafts 28 attached to both ends of the rail member 5.

Here, the winding shafts 25a and 25b are rotated by pulling out the screens 26a and 26b, and the spring incorporated therein is twisted and deformed, and the deformation of the spring causes a restoring force to rotate in the winding direction. Since it is well known in the art, the details are omitted.

Now, the motor 12 drives the pulley 13
When the belt is continuously rotated in one direction, the belt 15 moves the drive pulley 1
3, the belt connecting shaft 19 also moves in the same direction. Since the belt connecting shaft 19 is movable and rotatable along the guide hole 17, the belt connecting shaft 10 is either the drive pulley 13 or the driven pulley 1.
When rotating the outer circumference of 4, the belt connecting shaft 19 rotates along with the guide hole 17 while rotating.

Therefore, when the belt 15 moves in one direction, the carriage 10 reciprocates left and right along the rail member 5, and when the carriage 10 moves toward the driven pulley 14, The screen 26b is pulled out from the winding shaft 25b on the right side of the
Is wound around the winding shaft 25a.

When the carriage 10 moves toward the drive pulley 13, the screen 2 is moved from the winding shaft 25a on the left side.
6a is pulled out, and the screen 26b on the right side is the winding shaft 2
It is wound up on 5b.

Therefore, the reciprocating motion of the carriage 10 causes the screens 26a and 26b wound around the pair of winding shafts 25a and 25b to be alternately tensioned.
By providing a display image for advertisement on each of the screens 26a and 26b in advance, these two types of display images can be displayed alternately.

FIG. 5 shows another example of the moving device 11 for reciprocating the carriage 10. In this moving device 11, two pins 30 and 31 are fixed to the carriage 10, and the pin 3
The loop 15a of the belt 15 inserted between 0 and 31 is engaged with the adjustment pin 32, and the adjustment pin 32 can be inserted into and removed from a plurality of pin holes 33 formed in the carriage 10. The tension of the belt 15 can be adjusted by changing the insertion position of 32.

Further, a pair of switches SW ₁ and SW ₂ are provided on the transfer path of the carriage 10 so that the carriage 10 has each switch SW.
_{When 1} and SW ₂ are operated, the rotation direction of the motor 12 is switched to reciprocate the carriage 10.

When the switches SW ₁ and SW ₂ are activated, the motor 12 is stopped, and after the timer, the motor 12 is stopped.
For a certain period of time so that the screen 26
You may hold a and 26b in the tension | pulling state.

The motor 1 using the switches SW ₁ and SW ₂
In the screen device for controlling the rotation of 2, the motor 12 is stopped each time each of the switches SW ₁ and SW ₂ is operated, and the motor 12 is driven by the motor drive switch incorporated in the drive circuit of the motor 12. Can also
In this case, the lace and the curtain can be alternately opened and closed by winding the lace and the curtain around the winding shafts 25a and 25b, respectively.

[0025]

As described above, in the screen device according to the present invention, since the screens wound around the pair of winding shafts are alternately stretched by the reciprocating motion of the carriage, the screen device is used for a display. In the use of, the display image displayed on each screen can be displayed alternately,
You can give highly effective advertisements.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a screen device according to the present invention.

FIG. 2 is a transverse plan view of the same as above.

FIG. 3 is a vertical side view of the above.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing another example of the above transfer device.

[Explanation of symbols]

 1 Frame 5 Rail Member 10 Reciprocating Platform 11 Moving Device 12 Motor 13 Drive Pulley 14 Driven Pulley 15 Belt 19 Belt Connecting Shaft 25a, 25b Winding Shaft 26a, 26b Screen

Claims (2)

[Claims] 1. A rail member is provided inside a rectangular frame,
A pair of take-up shafts to which a rotational force is applied in the take-up direction is rotatably attached to a carriage provided movably along the rail member, and the take-up end of the screen taken up by each take-up shaft. A screen device comprising moving means for connecting the parts to fixed parts at both ends of the carriage in the moving direction and for moving the carriage back and forth along a rail member. 2. The screen device according to claim 1, wherein the moving means includes a pair of pulleys rotatably supported at both ends of the rail member, a belt stretched between the pair of pulleys, and one of the pulleys. A motor for rotating a pulley, and a belt connecting shaft is movably and rotatably supported in the carriage in a direction intersecting with the moving direction of the carriage, and a part of the belt is attached to the belt connecting shaft. Connected screen device.