JP3491327B2 - Play equipment - Google Patents

Abstract

PURPOSE:To timely select a character indication with a display means, depending on the position of a transport vehicle, regarding a play device constituted so as to allow a player to enjoy a game on board the vehicle travelling in a play area having scenery decoration. CONSTITUTION:A plurality of transport vehicle detection sensors 30a to 30f are provided at the predetermined positions of a travel route 17 where a transport vehicle 2 moves, and the travel speed thereof is controlled to be constant on the basis of a passage signal outputted from the sensors 30a to 30f. Also, the device is so constituted that character indication is selected after waiting the lapse of time until the entry of the vehicle 2 into the next area through the positions of the sensors 30a to 30f, in order to indicate a character corresponding to the areas 13 to 16 where the vehicle 2 is positioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game device, and more particularly to a game device configured so that a player can enjoy a game while riding on a carrier that moves in a landscape-decorated game area.

[0002]

2. Description of the Related Art Conventionally, as a game device configured to allow a player to enjoy a game while riding on a carrier that moves in a landscape-decorated game area, for example, Japanese Patent Laid-Open No. 3-12.
There is one disclosed in Japanese Patent No. 3579.

According to the device disclosed in the publication, the game effect mode of the game stage during the passage of the carrier or the game stage after the stage is changed based on the game result of the player. That is, the game production mode is changed by providing a plurality of moving paths through which the carrier passes or by providing a game stage according to the game result and changing the moving path and the game stage through which the carrier moves based on the game result of the player. Made to let you.

Further, the above publication discloses an example in which the above-mentioned conventional device is applied to a shooting game. In this shooting game, for example, a target actually provided in a landscape decoration arranged on a game stage, for example, A player shoots a character such as a monster with a simulated ray gun provided on the carrier.

A transmitter and a receiver are provided on the target side and the carrier side, respectively, so that the result of shooting by the simulated light gun is communicated between these transmitters and receivers and the score of the shooting game is displayed on the carrier side. Made of

However, if the moving path of the carrying device is changed to change the game effect mode based on the game performance of the player as in the above-mentioned conventional device, the moving path of the carrying device becomes complicated, and the entire device becomes complicated. There is a problem that it will end up.

Further, if a game stage is provided in accordance with the game result in order to change the game effect mode based on the game result of the player, a large number of game stages are required, so that the entire device becomes large and the entire device becomes large. Various problems such as increased manufacturing cost occur.

Therefore, in order to solve the above-mentioned problems, the applicant of the present invention has previously proposed Japanese Patent Application No. 5-133561 "A game device and a carrier used in the device".

In the "gaming device and the carrying device used in the device" according to the same application, a character corresponding to the landscape decoration of each play area is displayed by the display means provided in the carrying device, and an optical system member provided in the carrying device is used. By combining the character displayed by the display means and the landscape decoration of the play area, it is possible to achieve simplification and space saving of the entire device.

[0010]

SUMMARY OF THE INVENTION As described above, in the structure disclosed in Japanese Patent Application No. 5-133561 "Amusement device and carrier used in the device", in order to simplify the entire device and save space, etc. The character corresponding to the landscape decoration of each play area is displayed by the display means provided on the carrier.

Therefore, in the game device disclosed in the above application, it is necessary to synchronize the position of the carrier with the character display by the display means.

That is, for example, when a character such as a crocodile or a gorilla is displayed when the carrying device is located in a play area having a jungle landscape decoration, when the position of the carrying device is not synchronized with the character display by the display means. Is
Although the carrier is located in the play area having the jungle landscape decoration, a character such as a dolphin or a whale that does not correspond to the jungle landscape decoration may be displayed. In this way, even if the landscape decoration is a jungle, displaying a character corresponding to the landscape decoration of the sea such as a dolphin or a whale makes the player feel uncomfortable. Therefore, synchronizing the position of the carrying device and the character display by the display means is an important factor from the point of having the player enjoy the game.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a game device capable of switching the character display by the display means in accordance with the position of the carrier in a timely manner. .

[0014]

[Means for Solving the Problems] The above problems can be solved by taking the following measures.

According to the first aspect of the invention, landscape decoration is applied.
And a movement path arranged in communication with a plurality of play areas, and a plurality of units are connected to each other.
And a display device provided on the carrier for displaying a predetermined character image , a transport device for moving the travel route while allowing a boarded player to play a game in the play area, and a landscape of the play area. An optical system member provided on the carrier for combining the decoration and the character image displayed by the display means, and the optical system member on the moving path.
It is provided at the boundary within the number of play areas to prevent passage of the carrier.
Carrying device passage detecting means for detecting, and carrying device moving state control means for controlling the moving device to adjust the moving state of the carrying device .
Is provided, and the transporter movement state control means is one transporter.
A position in front of the passage detection means with respect to the moving direction of the carrier.
The other carrying device passage detection means in the storage
After passing, the carrying device passes the one carrying device passage detection means.
It is characterized in that the moving device is controlled to adjust the moving state of the carrying device based on the time required for the movement . Further, in the invention of claim 2, wherein
In the game device according to paragraph 1, the moving device is the transport device.
Select a motor for each carrier so that the moving speed of the container is constant.
It is characterized by selectively controlling ON / OFF.
It

[0016]

[0017]

The above-mentioned means operate as follows.

According to the first and second aspects of the present invention , the carrying device passage detecting means for detecting passage of the carrying device is provided at a plurality of predetermined positions in the movement path, and the carrying device is detected based on the carrying device passage detection signal output from the carrying device passage detecting means. The moving state control means controls the moving device to adjust the moving state of the carrier. Therefore, for example, even when a player with a heavy weight rides on the carrying device (that is, due to the load applied to the carrying device) and the moving speed decreases, the delay of the carrying device is detected when the carrying device passes through the carrying device passage detecting means. Therefore, it is possible to return the movement of the carrier to the normal state by controlling the moving device to recover the delay.

Therefore, since the carrier can maintain a stable moving speed (moving state) regardless of the magnitude of the applied load, the carrier moves and the character display is switched by the display means. Can be synchronized.

Assuming, for example, that the character display by the display means is controlled by a timer, the length of the moving path arranged in a certain play area is known, and the moving speed of the carrying device is also as described above. Since it is controlled by the movement state control means and is stable, the time required for the carrier to pass through this certain play area (hereinafter referred to as the passage time) can be easily obtained. Thus, Jing next play areas to display character by the display means after this passing time
It is possible to switch to the image display corresponding to the decoration .

[0021]

[0022]

[0023]

[0024]

An embodiment of the present invention will be described with reference to the drawings. In this embodiment, a configuration in which the game device according to the present invention is applied to a shooting game device will be described as an example.
1 is a block diagram showing the configuration of the shooting game device, FIG.
Is an overall plan view of the shooting game device, FIG. 3 is a plan view of a carrier used in the shooting game device, and FIG. 4 is a side view of a carrier used in the shooting game device.

As shown in FIG. 2, the shooting game apparatus 1 is provided with a boarding / alighting area 11 and play areas 12 to 16. The play areas 12 to 16 are different landscape decorations (dioramas), that is, specifically, the play area 12 has, for example, a house exterior diorama, the play area 13 has, for example, a living diorama, and the play area 14 has dark corridors, for example. The play area 15 is provided with a kitchen diorama, and the play area 16 is provided with a basement diorama.

In addition, in the shooting game device 1, a moving path 17 that passes through the respective play areas 12 to 16 and goes around.
Is provided. Then, for example, 16 carriages 2 are configured to move along the moving path 17 on the moving path 17. Specifically, each carrier 2 has a movement path 17
Boarding / alighting area 11 → amusement area 12 with a predetermined space above
→ Play area 13 → Play area 14 → Play area 15 →
The play area 16 and the boarding / alighting area 11 are arranged in this order to move around.

Further, at the boundary positions (6 points in this embodiment) of the above-mentioned areas 12 to 16 of the moving path 17, the carrier detection sensor 30a serving as carrier passing detection means for detecting that the carrier 2 has passed. 30f is provided.
The carrying device detection sensors 30a to 30f may be mechanical switches operated by contacting the carrying device 2 or optical sensors using an infrared sensor or the like, as long as they can detect that the carrying device 2 has passed. It is also possible to apply sensors of other configurations.

When the carrier 2 passes the point where the carrier detecting sensors 30a to 30f are arranged, the carrier detecting sensors 30a to 30f detect this and a detection signal indicating that the carrier 2 has passed (hereinafter, a passing signal). Is transmitted to the main control board 8 described later.

Further, the carrier 2 is constructed so that two players P can board it, as shown in FIGS. 1, 3 and 4. The carrier 2 includes a ride control board 3 for performing various controls for driving the carrier 2, a game board 4 connected to the ride control board 3, a monitor 5 connected to the game board 4, and a concave half mirror 6. , A power collection device 21 connected to the power supply 20, a stabilized power supply 22 connected to the power collection device 21, a first motor 23 for rotating a carrier, a lighting 24 for performance, a communication unit 25, a simulation of two units Gun 26, sound system amplifier 2
7, a speaker 27a and a woofer 27b are connected, a slit filter 28, a second motor 29 for moving the carrier 2, and the like.

The power collection device 21 has a function of collecting the power from the power supply 20, and the stabilized power supply 2 stabilizes the power collected by the power collection device 21 and the ride control board. 3 has a function of supplying the data to the device.

The ride control board 3 is composed of, for example, a microcomputer. (1) A function of sending a control signal to a motor 23 for rotating the carrier 2 on a plane to control the direction of the carrier 2 (2) Motor 2 for moving carrier 2 along movement path 17
ON / O of motor 29 by sending control signal to 9
Function for controlling FF (3) Function for sending a control signal to the effect lighting 24 to control the effect from the effect lighting 24 (4) Communication unit 25 game score information, position information of the carrier 2, etc. (5) A control signal is sent to the game board 4 to control the progress of the game, etc. while sending the control signal to the communication unit 25 which is transmitted to the communication unit 25 from the communication unit provided in the control room described later. It has functions and the like.

Further, the game board 4 is provided with a sound circuit, a ROM and the like (not shown), and the speaker 27 is provided via the sound circuit and sound system amplifier 27.
A predetermined sound is made to flow from a and the woofer 27b.

Further, each play area 12 to 1 is stored in the ROM.
Display information of a plurality of characters corresponding to the diorama 6 is stored, and the character corresponding to the diorama of the play area in which the carrier 2 is located is displayed on the monitor 5 of, for example, 33 inches.

A slit filter 28 is provided above the monitor 5 and has a function of reducing the influence of the light emitted by the monitor 5 on the player. A concave half mirror 6 is provided above the slit filter 28 at a predetermined angle, and the concave half mirror 6 displays a virtual image C of the character displayed on the monitor 5, for example, as shown in FIG.
And as shown in FIG. 4, the front of the carrier 2 (leftward in FIG. 4) 3
It is created at a place of about 000 mm to 4000 mm, and has a function of synthesizing the virtual imaged character and the diorama provided in front of the carrier 2.

Therefore, the concave half mirror 6 is set to the player P.
When viewed from above, as shown in FIG. 5, a play area (for example, a diorama 13a in the living area of the play area 13) and a character displayed by the monitor 5 in correspondence with the diorama 13a in the living area of the play area 13 (for example, a ghost The character 13b) is combined with the character 13b). In addition, on the surface of the concave half mirror 6 on the player P side,
As shown in FIG. 6, a psychic filter 6a for reducing the influence of light from the concave half mirror 6 on the player is attached.

Further, the simulated gun 26 is, for example, a suction beam gun which emits a suction beam 26a as shown in FIG. 6, and a site displayed on the concave half mirror 6 corresponding to the direction of the muzzle of the simulated gun 26. It is configured so that the character can be shot by matching the position of 26b with the position of the target character and shooting the simulated gun 26.

The direction of the muzzle of the simulated gun 26 when the simulated gun 26 is shot is input to the game board 4 to determine whether or not the character has been shot, and the game board 4 determines based on this input information. It The score (score) for each simulated gun 26, that is, for each player is shown in FIG.
As shown in FIG. 5, the concave half mirror 6 is displayed above the concave half mirror 6.

On the other hand, in the control room 7 which integrally controls the shooting game device 1, a main control board 8 which is composed of a microcomputer and performs various control operations, and a control of the shooting game device 1 which is connected to the main control board 8 are provided. A control panel 81, a control monitor 82, a communication unit 80, and the like, which are configured to monitor the situation, are provided.

Optical communication is performed between the communication unit 25 arranged in the carrier 2 and the communication unit 80 arranged in the control room 7 by using infrared rays. As the information transmitted from the carrier 2 to the control room 7, score information, ride movement information indicating the moving state of the carrier 2 (indicating the moving state of the carrier 2), and the like are transmitted.

As the information and control signals transmitted from the control room 7 to the carrier 2, the game progress command signal serving as an activation signal, the ride rotation command signal for commanding the rotation of the carrier 2 (ride), and the carrier 2 are given. A passing signal or the like indicating that the vehicle has passed a predetermined point is transmitted.

Further, a diorama operating system, a diorama lighting system, and a diorama sound system, which are not shown, are connected to the main control board 8, respectively. Based on control signals sent from the main control board 8 to these systems, shooting game is performed. Device 1
The diorama operation, room lighting and room sound are controlled.

Further, an external score display monitor 83 is connected to the main control board 8 so that the score of the shooting game is displayed on the external score display monitor 83 based on the signal from the main control board 8. Made of

In this embodiment, the game board 4
The monitor 5 corresponds to the display means described above, and the concave half mirror 6 corresponds to the optical system member described above.

Next, the operation of the shooting game device 1 having the above structure will be described.

Each of the plurality of carriers 2 arranged on the moving path 17 is provided with the motor 29 for driving the carrier as described above. The drive control of each motor 29 is performed based on a control signal transmitted from the main control board 8 of the control room 7 to the ride control board 3. In addition, the plurality of carriers 2 arranged on the moving path are connected to each other, and thus the moving path 17 is provided.
The moving speed of each carrier 2 is the same.

The main control board 8 sets the number of carrying devices for driving the motors 29 of the plurality of carrying devices 2 by executing a speed control process described later.
As a result, speed control processing is performed so that the moving speed of each carrier 2 is maintained at a predetermined speed. Specifically, when the player is on all of the plurality of carriers 2 (when the load is large), the motors 29 of all the carriers 2 are driven, and one of the plurality of carriers 2 is driven. In the case where the player is only on board (when the load is small), the motors 29 of all the transporters 2 are not driven, but the motors 29 of several units (for example, half) are driven, so that each transporter 2 is driven. Is controlled so that the moving speed of the vehicle becomes a predetermined speed.

The player P gets on and off the carrier 2 while the carrier 2 moves in the area of the boarding / alighting area 11. In this embodiment, two players P board the carrying device 2.

Further, in accordance with the above speed control, a character display control process for displaying the characters corresponding to the areas 12 to 16 is executed as the carrier 2 moves. By executing this character display control process, a character corresponding to the diorama in the play areas 12 to 16 in which the carrier 2 is located is displayed on the monitor 5.

The character displayed on the monitor 5 as described above is made into a virtual image by the concave half mirror 6, and the virtual image and the diorama of the play area 12 provided in front of the carrier 2 are concave half. It is synthesized by the mirror 6. Then, each player P shoots a character visually recognized as a virtual image in the play area 12 by the simulated gun 26 while riding on the carrier 2 moving in the play area 12, whereby a shooting game in the play area 12 is performed.

Then, the carrier 2 departs from the boarding / alighting area 11, moves through the play areas 12 to 16 in this order, and returns to the boarding / alighting area 11 again to end the shooting game. The final score of the shooting game is that of the carrying machine 2. It is displayed on the upper part of the concave half mirror 6 and the external score display monitor 83.

According to the above-described embodiment, the target character of the shooting game is displayed on the monitor 5 without actually disposing on the diorama side, and the character displayed on the monitor 5 is concave half mirror. Since the virtual image is converted into a virtual image by 6, and the virtual image character and the diorama applied to the play area are combined, the diorama of the shooting game device 1 does not become large-scale, so the shooting game device 1 is simple. The communication between the diorama and the carrier 2 is not necessary, and the communication relationship of the shooting game device 1 can be simplified. Further, as a result, it is possible to save the space of the entire shooting game device 1 and also to reduce the manufacturing cost of the entire shooting game device 1.

Next, the ride speed control process and the character display control process, which are the main parts of the present invention, will be described.

FIG. 7 is a flow chart showing the ride speed control processing, and FIG. 8 is a flow chart showing the character display control processing. The ride speed control process and the character display control process are executed by the main control board 8 arranged in the control room 7.

As described above, the shooting game apparatus 1 according to this embodiment is configured to display the character displayed on the monitor 5 as a virtual image on the diorama of the play areas 12 to 16 by using the concave half mirror 6. There is. Therefore, it is necessary to display on the monitor 5 a character corresponding to the play area where the carrier 2 is currently located.

Therefore, in this embodiment, control is performed so that the moving speed of the carrier 2 is maintained at a constant speed, and the display of the monitor 5 is switched based on the passing signal output from the carrier detecting sensors 30a to 30f. By doing
The characters corresponding to the play areas 12 to 16 are displayed.

First, the ride speed control process is shown in FIG.
Will be explained. The ride speed control process is a process executed to maintain the moving speed of the plurality of transporters 2 at a constant speed.

When the ride speed control process shown in FIG. 7 is activated, first, at step 10, the carrier detection sensor 30 is detected.
It is determined whether or not the passing signal is output from a to 30f. In the following description, it is assumed that a pass signal is output from the carrier detection sensor 30b.

If an affirmative judgment is made in step 10 and it is judged that a passage signal has been output from the carrier detection sensor 30b, then in step 12, the movement time is calculated. Here, the moving time refers to the position where the carrier detection sensor 30b is disposed after the carrier 2 has passed the position where the carrier detection sensor 30a is located before the carrier detection sensor 30b in the moving direction of the carrier 2. Is the time required for the carrier 2 to pass through (i.e., the time required for the carrier 2 to move from the position where the carrier detection sensor 30a is disposed to the position where the carrier detection sensor 30b is disposed). This moving time can be easily calculated by the timer circuit provided on the main control board 8.

In the following step 14, it is judged whether or not the moving time calculated in step 10 is normal.

As described above, the plurality of carriers 2 which are driven by the motor 29 and move on the moving path 17 are connected to each other. Therefore, the moving speed of each carrier 2 can be varied by selectively ON / OFF controlling the motors 29 of the plurality of carried devices 2.

Further, it is known that the moving speed of the carrier 2 varies depending on the total number of players who are boarding each carrier 2. Specifically, when the total number of players increases, the load applied to each motor 29 tends to increase and the moving speed tends to decrease. Conversely, when the total number of players decreases, the load applied to each motor 29 decreases. Then the moving speed becomes faster. Therefore, if the ride speed control is not performed, the speed of the carrier 2 may not be kept constant.

Therefore, when it is determined that the movement time calculated in step 12 is not normal, the process proceeds to step 16, and the main control board 8 determines the carrier 2 based on the movement time calculated in step 12. Calculates the number of drive motors that is suitable for the normal moving speed.

The number of drive motors for normally moving the carrier 2 is transmitted from the main control board 8 to the ride control board 3 via the communication units 25 and 80, and the ride control board 3 is transmitted from the main control board 8. The motors 29 of the carrier 2 are selectively driven by the number of drive motors. By carrying out the series of processes described above, the carry device 2 can be operated at a predetermined speed regardless of the applied load.

Next, the character display control process will be described with reference to FIG.

Here, the character display control process is a process of switching the displayed character to a character corresponding to the advancing play area when the carrying device 2 moves to each of the play areas 12 to 16 as it moves. In the following description, an example in which a passing signal is output from the carrier detection sensor 30b will be described.

When the process shown in the figure is started, first, at step 20, in the previous process, the carrier detection sensor 3
After the passage signal is output from 0a, it is determined whether a predetermined time has elapsed. That is, since the moving speed of the carrier 2 is stable at a predetermined speed by the speed control process described above, and the distances between the play areas 12 to 16 are known in advance, the carrier 2 passes through the play areas 12 to 16. The time required to do this can also be easily determined. Therefore, after the passage signal is output from the carry device detection sensor 30a, the carry device 2 enters the next play area 13 when a predetermined time required for the carry device 2 to pass through the play area 12 elapses.

Therefore, if an affirmative decision is made in step 20, the processing advances to step 24, in which the character is switched. This character switching process is performed by the communication unit 2 from the main control board 8.
This is performed by transmitting a character switching command to the ride control board 3 via 5, 80.

When the character control command is transmitted from the main control board 8, the ride control board 3 drives and controls the game board 4 and the monitor 5 so that the character displayed on the monitor 5 corresponds to the diorama in the play area 14. Switch to the one.

On the other hand, if a negative determination is made in step 20, the process proceeds to step 22 and the carrier detection sensor 3
It is determined whether the pass signal is output from 0b. As described above, the carrier detection sensors 30a to 30f are arranged at the boundaries of the play areas 12 to 16. Therefore, the carrying device 2 outputs the passage signals from the carrying device detection sensors 30a to 30f (in this example, the carrying device detection sensor 30b), so that the carrying device 2 corresponds to the positions of the carrying device detection sensors 30a to 30f. In the example, the play area 13)
It is possible to detect that the vehicle has entered.

Therefore, the carrying device detection sensor 30b outputs a passage signal to display a character in the play area 1
By switching to the character corresponding to 3, the game can be enjoyed without giving the player a feeling of strangeness.

In the above character display control processing, not only the time management in step 20 but also the switching processing using the carrying device detection sensor in step 22 is added to perform character switching for the following reason. That is,
If only the time management in step 20 applies an excessive load to the motor 29 that drives the carry device 2 and the speed control process cannot cope with the case, the carry device 2 may be used.
There is a possibility that the timing of the movement of the character does not match the timing of switching the character. Therefore, the processing of step 22 is provided in order to properly perform the character switching timing even when an excessive load that cannot be controlled by the speed control processing is applied. In this way, by performing the double management in step 20 and step 22, the display switching of the character can be accurately performed, and the player can enjoy the game without feeling uncomfortable.

In the above embodiments, the case where the present invention is applied to the shooting game apparatus has been described as an example, but the present invention is not limited to this.

Further, in the explanation of the control processing, the carrying device detection sensor 30b is taken as an example, but the same processing is of course carried out even when another carrying device detection sensor outputs a passage signal. is there.

[0074]

As described above, according to the present invention, the moving speed of the carrier can be kept constant.

[0075]

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a shooting game apparatus according to the present embodiment.

FIG. 2 is an overall plan view of a shooting game device according to the present embodiment.

FIG. 3 is a plan view of a carrier used in the shooting game device according to the present embodiment.

FIG. 4 is a side view of a carrier used in the shooting game device according to the present embodiment.

FIG. 5 is a diagram showing an example of landscape decoration and characters synthesized by an optical system member.

FIG. 6 is a diagram for explaining an optical system member, a simulated gun, and the like.

FIG. 7 is a flowchart showing a ride speed control process.

FIG. 8 is a flowchart showing a character display control process.

[Explanation of symbols]

1 Shooting game equipment 2 carrier 3 Ride control board 4 game board 5 monitors 6 concave half mirror 7 control room 12-16 Play area 17 travel routes 25,80 communication unit 29 motor 30a to 30f Carrier detection sensor

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-4-58980 (JP, A) JP-A-1-259404 (JP, A) JP-A-5-161762 (JP, A) JP-A-4- 108480 (JP, A) JP-A-3-123579 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A63F 9/00-9/30 A63F 13/00-13/12 A63G 31/00-31/02

Claims (2)

(57) [Claims] 1. A boarding route is provided in which a plurality of units are connected to each other and a moving path is provided so as to communicate with each other in a plurality of landscape-decorated amusement areas. Displayed by a carrier for moving the moving route while allowing a player to play a game in the play area, display means provided on the carrier for displaying a predetermined character image, landscape decoration of the play area, and the display means. An optical system member provided on the carrying device for synthesizing a character image; a carrying device passage detecting means provided on a boundary of the plurality of play areas on the moving path for detecting passage of the carrying device; and the moving device. And a carrier moving state control means for controlling the moving state of the carrying device, wherein the carrying device moving state control means has a moving direction of the carrying device rather than one carrying device passage detecting means. On the other hand, the moving device is controlled based on the time required for the carrier to pass the one carrier passing detection means after the carrier has passed the disposition position of the other carrier passing detecting means in the previous position. A game device characterized in that the moving state of the carrier is adjusted. 2. The game device according to claim 1, wherein the moving device selectively ON / OFF-controls a motor for each carrier so that the moving speed of the carrier is constant. apparatus.