JPH0673059B2 - Display device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a display device that sequentially displays a number of display plates by circulating them between a display position and a concealment position.

[Prior Art] Such a display device is well known and is disclosed in, for example, Japanese Patent Application Laid-Open No. 59-94782 by the present applicant. In the display device, the display board currently displayed is for a certain time (for example, 10
Second), the circulation device is operated by the motor, the currently displayed display plate moves below the display position, and another display plate located behind the displayed display plate is, for example, a cam mechanism. It is designed to be sent to the display position by a sending device such as a car or a sending car. However,
In such a known technique, the display plate such as a poster can be replenished, replaced, and taken out only from the back side of the display device, and when the display device is closely attached to a wall surface or the like, the entire display device is I had to move it and it was inconvenient to replace posters.

The reason is that on the front side of the display device, the display plate is irremovably gripped in order to transfer the display plate from the display plate guiding member that sequentially holds the display plates to the gripping tool. This is because the gripping tool is moving while the motor is operating while the display plate is circulating on the front side, and the display plate cannot be replaced.

For this reason, conventionally, it has been necessary to remove the display plate held on the rear side of the guide member from the back surface side of the display device for work.

The applicant has previously developed the technique disclosed in Japanese Patent Laid-Open No. 59-200289, but even with such a known technique, the indicator is replenished and replaced from the back side of the case. Inconvenient to replace.

[Problem to be solved] Therefore, an object of the present invention is to provide a display device capable of supplementing and replacing a display plate from the front side.

[Means for Solving the Problems] According to the present invention, in a display device provided with a circulation mechanism for a display plate and a transport mechanism for feeding the display plate to the circulation mechanism in a case in which a front plate is attached to be openable and closable The circulation mechanism is a chain provided with a gripping tool for gripping the support bar of the display board,
A first motor that drives four sprocket chains that hang the chain in a square shape; and a disengagement prevention plate that is provided along the traveling path of the chain and that has a notch for supplementing and replacing the display plate. The transport mechanism includes a display plate guide member that is inclined from near the sprocket at the rear of the upper part to near the sprocket at the front of the upper part, a rotor that sequentially sends the display plates on the display plate guiding member one by one, and the rotor. And a second motor for driving the first motor and the second motor.
There is provided control means for selectively starting and stopping the motor and the motor.

[Explanation of Operation and Effect] Therefore, when replenishing the display board, the first motor for moving the circulation mechanism is moved to move the gripper to a position where the display board can be inserted, and the display board is placed on the gripper at that position. Just do it. Further, when replacing the display board, the second motor that moves the transport mechanism that places the display board on the circulation mechanism is moved, and after the display board is placed on the circulation mechanism, the first motor that moves the circulation mechanism is moved, Move the display board to a position where it can be removed from the gripper. At this time, if the first motor is stopped, the display plate can be replaced at that position.

As described above, according to the present invention, the first motor and the second motor are separately controlled and stopped at the position where the display plate can be replenished and replaced from the front surface side of the display device. Can be installed in close contact with each other, saving space and facilitating replacement work.

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

FIG. 1 is a front view of a display device embodying the present invention, in which a base 2 installed on a floor is provided with a case 2, and a front plate 5 is detachably attached to the front of the case 2. ing. A window 3 is opened in the front plate 5 and is covered with a transparent plate W such as glass. Further, in order to explain the display on the display board, a speaker S for emitting a sound and a control switch 4 for controlling the display operation are further provided on the front surface thereof.

The control switch 4 is provided with four switches including a start button SA, an exchange button SB, an insert button SC, and an eject button SD.

2 and 3 show the internal structure of the case 2, with four sprockets 6a and 6b on each side of the case 2.
6c and 6d are provided, and chains 7a and 7b are laid in a square shape on these sprockets 6a to 6d. A gripping tool 10 for gripping both ends of the support rod 9 of the display plate 8 is attached to each of the chains 7a and 7b. In the illustrated example, this gripping tool 10
Are provided in two places. These chains and gripping tools constitute a circulation mechanism of the display board. A display plate guiding member 11 extends obliquely downward from the upper rear sprocket 6d toward the lower side of the upper front sprocket 6a at both upper sides in the case 2. The display board guide member 11 supports the end portion of the support rod 9. A concave portion 11a is formed in the front portion of the display plate guiding member 11, while the rotor is provided above the concave portion 11a.
12 is provided, the rotor 12 of which has one notch 12a,
The notch 12a cooperates with the recess 11a to grip the support rod 9, and the rotation of the rotor 12 causes the display plate guiding member 11 to wait for the display plate 8 which is at the frontmost position to move to the display position. It is designed to be sent out. Therefore, the rotor 12 constitutes a transport mechanism for placing the display plate on the circulation mechanism.

First motor 14 for rotating sprockets 6a-6d
Is the shaft of the gear 15 and sprocket 6b provided on the rotating shaft.
Rotational force is transmitted to the sprocket 6b via the gear 17 provided on the 16 to operate the chains 7a and 7b, thereby moving the display plate from the display position to the concealed position.

The rotor 12 is attached to a shaft 18, and a gear 19 is integrally attached to the shaft 18. A worm gear 20 meshing with the gear 19 is rotated by a second motor 21. The second motor 21 is stopped every time the shaft 18 makes one rotation, and therefore the shaft 18 has a fourth position.
As shown in the figure, a cam 22 is attached, and a limit switch 24 having an actuator 23 operated by the cam 22 is provided.

In addition, the chain is connected to the chain 7a for controlling the first motor 14.
25a and 25b are provided, and a limit switch 27 having an actuator 26 with which the projecting pieces 25a and 25b are engaged is provided.

On the back side of the display position of the display plate, a detachment prevention plate 30 for the display plate is provided along the traveling path of the chain. The detachment prevention plate 30 is held by the gripping tool 10 due to vibration or the like when the display plate 8 moves.
Although it is intended to prevent the gripping tool 10 from coming off, the notch 31 is provided at a position corresponding to the position 35 at which the gripper 10 is stopped when the display plate is replaced.
When the gripping tool 10 is in the exchange position 35, the display plate can be inserted into the gripping tool 10 from the front surface of the display device, and can be replaced or removed.

The operation of the present invention will be described below mainly with reference to FIGS.

First, the normal display cycle is started by pressing the start button SA and is shown in the flow chart of FIG. The operation will be described. It is assumed that each component is in the state shown in FIG. 3 and the display board 8 is displayed. button
When SA is pressed (step S1), a fixed time (for example, 10 seconds)
After displaying the display plate 8 (step S2), the first motor
14 operates (step S3), and chains 7a and 7b move in the direction of the arrow. As a result, the display panel 8 currently displayed moves to the position indicated by 8a. At that time, the limit switch 27 (sensor A) is activated by the protrusion 25b and stopped (step S4). By this operation, the display plate indicated by 8a is sent upward, falls from the gripping tool 10 on the display plate guiding member 11, rides on the member 11 and moves to the rear of the display plate 8c. Then, the gripper 10 moves to the front surface of the rotor 12.

Next, the second motor 21 operates (step S5), and the rotor 12
Is rotated, and the support plate 9 is gripped between the notch 12a and the recess 11a, and the display plate 8b is sent to the display position, that is, the gripping tool 10. Then, the rotor 12 further rotates, and the support rod 9 of the display plate 8d on the frontmost side of the display plate guiding member 11 is cut into the notch 12a.
Then, the display plate 8b is grasped and moved to the position shown in FIG. At that time, the cam 22 engages with the actuator 23 of the limit switch 24 (sensor B) (step S6), and the second motor 21 stops. And after a certain time, the first motor
14 rotates, and the same operation as described above is repeated.

Next, the poster is inserted from the state where the poster is not inserted in the display device. The insertion operation is performed according to the procedure shown in FIG. That is, when the front plate 5 is removed, the start button SA is turned on (step S7), the exchange button SB is then turned on (step S8), and the insertion button SC is turned on (step S9), the first motor 14 Is driven (step S10). Then, after a fixed number of seconds, for example, the first motor 14 is driven for 2 seconds (step S11), the first motor 14 is stopped. This stop position is the position where the gripping tool 10 has reached the stop position 35 shown in FIG. 3, and at this position, the poster can be inserted from the front of the display device by utilizing the notch 31 formed in the detachment prevention plate 30. .

Then press the insert button SC again (step S12),
The first motor 14 moves (step S13) and moves the chain to a position where the sensor A (limit switch 27) operates (step S14). To insert more posters, return to step S9 in the flowchart. As described above, since the second motor 21 is not driven during the poster insertion operation, the grasping tool 10 that stops at the stop position 35 is always empty, and the inserted posters sequentially accumulate on the display plate guiding member 11.

The flow of taking out or replacing the poster is shown in FIG. 7, and first press the start button SA (step S1.
6) Then, turn on the exchange button SB (step S17), and then turn on the discharge button SD (step S18),
The first motor 14 is driven (step S19). Then, after a certain period of time, for example, 2 seconds (step S20),
The gripper 10 stops at the stop position 35. At this position, remove the poster, insert another poster for replacement, and press the eject button SD after work (step S2
1) The first motor 14 is driven (step S22), and the chain is moved to a position where the sensor A (limit switch 27) operates. When the sensor A operates (step S23) and the discharge button SD is turned on (step S24), the second motor 21 operates (step S25) to send the next display plate to the gripping tool, and the sensor B (limit). The switch 24) detects this (step S26), the motor 21 stops, and the first motor 1
4 is driven (step S27). Then, when the first motor 14 is driven for a fixed time, for example, 2 seconds (step S28),
The gripper moves to the stop position. Then remove the display board or replace it with another poster.

By repeating the above operation, all the display boards can be taken out.

As described above, when the poster is taken out or replaced, the second motor 21 is driven to put the poster on the display plate guiding member 11 on the gripper 10. Therefore, the posters should be taken out or replaced at the stop position 35 in sequence. You can

[Effects of the Invention] As described above, the present invention has the following excellent effects.

(I) Since the circulating device and the conveying device can be selectively operated by the control means, the display plate can be stopped at a specific position on the front side.

(Ii) Therefore, if the front plate is opened from the front side, the display plate can be supplemented and replaced.

(Iii) Since the display plate can be replenished and replaced from the front, the display device can be installed in close contact with the wall surface and the like, and it is not necessary to move the display device when the display plate is replenished and replaced.

[Brief description of drawings]

1 is a front view of a display device for carrying out the present invention, FIG. 2 is a front sectional view, FIG. 3 is a side sectional view, and FIG. 4 is a view of a cam viewed in the direction of arrow IV in FIG. FIG. 5, FIG. 6 and FIG. 7 are flow charts showing the operation. 2 ... Case, 3 ... Window, 6a, 6b, 6c, 6d ... Sprocket, 7a, 7b ... Chain, 8, 8a, 8b, 8c, 8d ... Display plate, 11 ... Display plate guiding member, 12 …… Rotor, 14 …… First
Motor (motor A), 21 ... second motor (motor B), W ... transparent plate, 30 ... poster removal prevention plate, 31 ...
… Notches

Claims (1)

[Claims] 1. A display device comprising a circulation mechanism for a display plate (8) and a transport mechanism for feeding the display plate to the circulation mechanism in a case (2) in which a front plate (5) is openably and closably mounted. The circulation mechanism has chains (7a, 7b) provided with a gripping tool (10) for gripping a support rod (9) of a display plate (8), and four sprockets for hanging the chains (7a, 7b) in a square shape. (6a
A first motor (14) for driving the first to sixth d) and a disengagement prevention plate (30) having a notch (31) for supplementing and replacing the display plate and provided along the traveling path of the chain, The conveying mechanism is a display plate guide member (11) provided so as to be inclined from near the sprocket on the upper rear side to near the sprocket on the upper front side.
And a rotor (12) for sequentially feeding the display plates on the display plate guide member (11) one by one, and a second motor (21) for driving the rotor (12), A display device is provided with a control means (4) for selectively starting and stopping the first motor (14) and the second motor (21).