JPH09128597A - Automatic vending machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pay out the change on such condition that a push button switch is operated, when the coins of an amount larger than a sale price are inserted from a coin slot. SOLUTION: The vending machine 1 is provided with a control equipment, with which the sale enabled state of a commodity box is shown by the light-on and display of a push button switch 9 based on the insertion of coins into a coin slot 11 and a door 6 provided on this commodity box can be opened based on the operation of the selected push button switch 9, and a change unit 18. When the coins of an amount larger than the sales price are inserted from the coin slot 11, this control equipment calculates the differential amount between the inserted amount and the sales price and sends out the paying-out command of the change to the change unit 18 on the condition that the push button switch 9 is depressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vending machine, and more particularly, it can display vegetables and the like in a plurality of product boxes provided with openable and closable doors, and can insert coins into a coin slot. Based on this, the present invention relates to an automatic vending machine in which the door of a predetermined product box can be opened and the vegetables and the like can be taken out.

[0002]

2. Description of the Related Art As this type of vending machine, for example, the technology described in Japanese Patent Application No. 5-139064 filed by the applicant of the present application is known. According to this conventional technique, the type of coins that can be used is limited to one type of 100-yen coin, and the product prices in a plurality of product boxes are sold at the same amount, that is, a so-called unified selling price The feature is that it is a vending machine with a simple structure.

Further, in the above-mentioned vending machine, 10
Since the sales amount is an integral multiple of 0 yen, there is no need to return the change, so no change device was installed.

Then, when a coin is inserted into the coin slot, the subsequent coin insertion is stopped, the indicator lamp of the push button switch indicating that the product is available for sale is lit, and a predetermined push button switch is pressed from among these push button switches. The door of the product box corresponding to the push button switch can be opened, and the purchaser can open the door of the product box and take out the product.

[0005]

However, it is inconvenient for merchandise purchasers to limit the types of coins that can be used by a vending machine to one type of 100-yen coin, as the types of coins are diversifying today. is there. On the other hand, if there are two or more types of coins that can be used, a change device is additionally required, and the coin processing structure becomes complicated, resulting in an increase in the manufacturing cost of the vending machine.

Further, in the case where the change device is provided, if the changer is returned on condition that the door of the product box is fully opened by the purchaser, if the product is taken out without fully opening the door, the change will be given. May not be returned.

The present invention has been made to solve the above problems, and an object thereof is to operate a push button switch when a coin of a larger amount than a selling amount is inserted from a coin insertion slot. On that condition, it is to provide an automatic vending machine which dispenses change.

[0008]

In order to achieve the above-mentioned object, the present invention provides a coin processing device (10) having a coin slot (11) and a plurality of product boxes (29) capable of storing products. Openable and closable doors (6), display means selection means (9) installed for each of the plurality of product boxes (29) and capable of opening the doors (6), and the coin insertion The state in which the product box (29) can be sold is indicated by the lighting display of the selection means (9) with the display function based on the coin insertion into the mouth (11), and a plurality of product boxes (2) are displayed.
The door (6) of the corresponding product box (29) is operated based on the operation of the selecting means (9) with a display function selected from among 9).
An automatic vending machine (1) comprising a control device (C) for opening a door, and a control device (C) including a change device (18) having a coin return opening (24).
When a coin larger than the sales amount is inserted from the coin slot (11), calculates the difference amount between the inserted amount and the sales amount, and selects the display function selecting means (9). ) Is performed, a payout command for the difference amount is sent to the change device (18),
The change is returned from the coin return port (24).

(Operation) Based on the above construction, the vending machine (1) of the present invention is equipped with the change device (18), and the change is returned from the coin return port (24). In this case, If the change is returned on condition that the door (6) of the product box (29) is fully opened, the change may not be returned if the product is taken out without fully opening the door (6). There is. Therefore, the control device (C) of the present invention calculates the difference amount between the inserted amount and the selling amount when a coin having a larger amount than the selling amount is inserted from the coin slot (11). The change device (18) issues a payout command for the difference amount on condition that the purchaser of the product has operated the selection means with display function (9).
Since it was sent to the door, as described above, the door (6)
Even if the item is not fully opened, the change will definitely be returned.

The reference numerals in parentheses are for the purpose of contrasting with the drawings, but do not limit the present invention in any way.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the vending machine 1 is rotatably supported by the vending machine body 3 supported by the supporting portion 2 and one side end of the vending machine body 3, and is opened to the front. It is composed of a possible main body door 5. A large number of doors 6 that can be opened to the front are arranged in a row in the vertical direction at a substantially central portion of the front surface of the main body door 5, and an opening / closing knob for the door 6 is provided at an upper portion of each door 6. 7 is protrudingly provided, and on one side of the door 6,
A push button switch 9 as a selection means with a display function is provided, and when the push button switch 9 is pressed, a display lamp (LED) 9a inside the push button switch 9 (see FIG. 3)
Lights up. In addition, inside the push button switch 9, a sold-out display lamp (L
ED) 9b (see FIG. 3) is also incorporated.

A coin processing machine 10 having a coin slot 11 is arranged at a substantially central portion on one side of the door 5, and a sales lamp (LED) 4 and a sale stop are provided on the coin processing machine 10. Lamps (LEDs) 8 are provided respectively. This coin processing machine 10 has two types of 100-yen coin and 500-yen coin.
Only types can be accepted. In addition, above the coin slot 11, the coin amount display section (digital display) 1
4, a charge display case 12 for displaying the selling price is provided below the coin slot 11.

Further, a change device 18 having a coin return port 24 is provided below the coin processing machine 10, and a return lever 26 is provided below the coin insertion port 11. In addition, above and below the charge display case 12,
Key holes 13 and 13 are formed, respectively.

Next, when the door of the vending machine 1 is opened, the vending machine body 3 has a bottom plate 15, a pair of side plates 16 and a rear side plate (not shown) on the front left side as shown in FIG. And a top plate 19, and a pair of side plates 20a, 20b are erected at a substantially central portion of the vending machine body 3, and a bottom plate 21a is laterally provided at lower ends of the side plates 20a, 20b. A top plate 21b is horizontally mounted on the upper end portion, and a plurality of shelf plates 22 ... Is provided in an intermediate portion between the side plates 20a and 20b.
Are arranged in parallel.

A pair of side plates 23a, 2 are provided on the right side of the front surface.
3b is erected, a bottom plate 25a is horizontally installed on the lower ends of the side plates 23a and 23b, and a top plate 25b is installed horizontally on the upper end of the side plates 23a and 23b. A plurality of shelf boards 27 ... Are arranged in parallel.

As a result, product boxes 29 ... With a substantially equal volume are formed, and the doors 6 are provided at the openings of the product boxes 29, respectively. Further, the control box 3 is provided on the upper part of the vending machine body 3.
0 is provided, and a main power switch 31 and an amount setting switch 32 are provided on the front surface of the control box 30.
Etc. are respectively arranged, and the control device C (see FIG. 7) is stored inside the box 30. In addition,
33 and 35 are electric lights, and 36 is an outlet.

A lock mechanism for opening and closing the door 6 of the product box 29 is provided on each of the doors 6, and as shown in FIGS. Support plates 37, 37 are provided upright in the vicinity of the sides, and a large number of solenoids 40 ... Are arranged on the support plates 37, 37. Above each solenoid 40, there is an L-shape. An arm 41 rotatably supports a support shaft 41a, and one end of the arm 41 is bent to form a locking piece 41b. The notch 41c is formed, and the notch 41 is formed.
A semicircular recess 41e is formed in the lower part of c.

The lower end of the locking piece 41b and the upper end of the rod 40a of the solenoid 40 are connected via a wire 42, while the tension spring 45 locked by the hook pin 43 is an arm. 41 is connected to the engaging portion 41d. An arcuate long hole 46 is formed in the support plate 37, and a limit switch 47 is arranged on the inner peripheral side of the long hole 46.

Further, the door 6 of the product box 29 is, as shown in FIGS. 5 and 6 (a), a frame 49 of the door 6.
Bent pieces 49a, 49b are formed at both left and right ends of the pin, and pins 50a, 5 are provided at the lower portions of the bent pieces 49a, 49b.
0b are fixed to each other, the upper portion of the frame 49 is bent inward to form a groove, and the lower portion of the frame 49 is bent in a crank shape. A magnet 51 is attached to the portion 49d.

The frame 49 has a plurality of locking portions 49.
e ... is formed, and a transparent member 53 such as transparent glass is provided on each of the locking portions 49e with a washer 52 and a spring washer 5.
4 is fixed by a fixing means 55 such as a screw, and a knob 7 is provided at a substantially central portion of an upper portion of the frame 49 so as to project its free end side outward, and a base portion of the knob 7 is provided. Are fixed by a fixing member 60 via a washer 56, a transparent member 53, a washer 57 and a spring washer 59.

As shown in FIGS. 5 and 6 (b), the base portion of the guide plate 62 is provided on one side of the frame 49 with the washer 63 and the washer 64 on the locking portion 49c of the frame 49. The guide plate 62 is fixed by a fixing means 66 such as a screw via a spring washer 65, a notch 62a is formed on one lower side of the guide plate 62, and a hole 62b is formed on the other lower side. The base of the pin 67 is inserted and fixed in the hole 62b.
The pin 67 of the guide plate 62 is swingably inserted into the long hole 46 of the support plate 37.

As described above, when the door 6 of the product box 29 is closed and the solenoid 40 is off, the arm 41 is supported by the tension spring 45 to support the shaft 41a.
Since the pin 67 of the guide plate 62 is engaged with the recess 41e of the arm 41, the door 6 of the product box 29 is locked and the door 6 cannot be opened. It is in a state.

Next, when the solenoid 40 is turned on when the door 6 of the product box 29 is closed, the rod 40a of the solenoid 40 is attracted, and the arm 41 is supported by the arm 41 via the wire 42. The pin 67 engaged with the recess 41e rotates counterclockwise about the
1e is disengaged and the long hole 46 of the support plate 37 can be swung so that the door 6 of the product box 29 is unlocked and the door 6 is openable. Then, the product box door 6 is opened, and the product is taken out from the product box 29. In this case, the solenoid 40 is ON
Even if the open door 6 of the product box 29 is closed within a certain time, as described above, the door 6 of the product box 29 is in the openable state, so that the door 6 can be opened. Is.

When the open door 6 of the product box 29 is closed when the solenoid 40 is turned off, the pin 67 of the guide plate 62 is engaged with the recess 41e of the arm 41 and the arm 41 is opened. The shaft 41 is attached to the support shaft 4 by the tension spring 45.
The door 6 of the product box 29 is locked because it is pulled clockwise around 1a, and the door 6 cannot be opened.

FIG. 7 is a diagram showing the connection of the above-mentioned operating means and various sensors.

To the control device C, the push button switch 9 and the limit switch 47 of each commodity box 29 are input via the converter 69, and the amount setting switch 32 is input via the converter 70. Similarly, the coin processing machine 10 is input to the control device C via the converter 72, and the change device 18 is input to the control device C via the converter 74.

On the other hand, from the control section C, through the converter 73, the display lamp (LED) 9a of the push button switch 9,
Signals are output to the solenoid 40 via the converter 75, the coin processor solenoid 10b via the converter 77, and the change dispenser solenoid 18a via the converter 71, respectively. Signals are input to the sale lamp 4 and the sale stop lamp 8 via the device 90, and to the input amount display unit 14 via the converter 91.

In the control device C, when the main power switch 31 of the vending machine 1 is turned on, the control device C starts operating, and when the control device C operates normally, the display of the push button switch 9 is displayed. The control device operation confirmation means 79 for turning on the respective lamps (LEDs) 9a, and the predetermined push button switch 9 being pressed after the coin is inserted into the coin slot 10 and the subsequent coin insertion of the coin processor 10 is stopped. Based on
The door 6 of the product box 29 corresponding to the push button switch 9
Limit switch 4 by fully opening the door 6 when the
The coin insertion control means 80 for releasing the coin insertion stop of the coin processing machine 10 based on the door full-open detection signal of 7, and the timer 81 presses a predetermined push button during the insertion of the coin into the coin insertion slot 10 and the subsequent insertion of the coin. A coin insertion control means 82 for storing the time from when the switch 9 is pressed and for canceling the coin insertion stop of the coin processing machine 10 after a lapse of a predetermined time is stored.

Further, in the control device C, when a coin having a larger amount than the selling amount is inserted from the coin insertion slot 11, a difference amount between the inserted amount and the selling amount is calculated, On condition that the push button switch 9 is pressed, the change device solenoid 1 issues a command for paying out the difference amount.
8a, the change-out control means 84 for sending the change toward 8a and the amount setting switch 32 are set to "0".
Based on the data of the unlocked door 6 that is stored in the RAM 83 of the control device C, that is, the data of the product box 29 in which the door 6 is opened, the door 6 is unlocked, that is, the door 6 is never opened. Indicator lamp (LED) 9 of the product box 29 that was not missed
A use state confirmation means 85 for turning on a is stored.

The control device C has a CPU, a RAM, and a RO.
It is a microcomputer composed of M, an input interface, an output interface and the like.

Next, the operation of this embodiment will be described with reference to FIGS. 8 and 9.

When the seller turns on the main power switch 31 of the automatic vending machine 1 (S1), the control operation of the controller C is started and initialization is performed (S2), and each input status is checked. (S3). Subsequently, it is determined whether or not the monitoring of the service routine is completed (S4). If not completed, the amount setting of the amount setting switch 32 is "0".
(S5), there is no rejecter abnormality (S6), the push button switch is not pressed (S7), the product box is not opened (S8), and the change is not being returned (S5).
9) If the return lever is turned on (S10) and coins have not been inserted (S11), monitoring of the service routine is terminated (S12), the service routine is set (S13), and the process proceeds to step S15. . In addition, in cases other than the above (when the service routine cannot be set), the process proceeds from step S14 to step S4 and is repeated from step S5.

Next, after the service routine is set, it is confirmed whether or not the display lamps (LEDs) are sequentially turned on (S15). If they are not sequentially turned on, the display lamps (LEDs) are sequentially turned on by replacement or the like. From (S16), the sales amount set by the amount setting switch 32 is read (S17).

After confirming that the display lamps (LEDs) are sequentially turned on, it is next judged whether or not the solenoid 40 of the selected product box 29 is already turned off (S18), and it is turned off. For example, the solenoid 40
Is once turned on and the door 6 of the product box 29 is opened, and the display lamp (LED) 9 of the push button switch 9
A is turned off (S39). Further, in step S40, if the input amount ≧ the sales amount, the change proceeds to step 34 so that the payout amount is set and the payout amount is displayed on the input amount display section 14 (S35).
Then, the sale lamp (LED) 4 is turned on (S36), the sale stop lamp (LED) 8 is turned off (S37), and the sold-out display lamp (LED) 9b of the pushed push button switch 9 is further pushed.
Is turned on (S38), and the process returns to step S3.

If the solenoid 40 is not turned off in step 18 described above, then the product box 29
It is determined whether the door 6 of the item is opened (S19), and if it is opened, the solenoid 40 of the selected product box 29 is opened.
Is turned off (S41), and in step S40, a change-out command is issued if the input amount ≧ the sales amount. After that,
The process returns to step S3 through steps S34 to S38.

Further, if the door 6 of the product box 29 is not open, it is judged in step S20 whether or not the solenoid 40 is still ON. If it is still ON, the door of the product box 29 is opened. Whether or not 6 is opened (or the door 6 is opened but not fully opened) is checked for 1 minute (S42), and if the input amount ≧ the sales amount, a change-out command is issued (S40). here,
Checking whether the door 6 has been opened for one minute (or the state where the door 6 is opened but not fully opened) is performed by the door 6
This is because when the door 6 does not open even after 1 minute has passed, the display lamp (LED) 9a of the push button switch 9 is turned off, and another product box 29 can be sold. After that, after steps S34 to S38, step S
Return to 3.

If the solenoid 40 is not currently ON, the process proceeds to step S21, where it is determined whether or not the push button switch 9 is pushed. If the push button switch 9 is pushed, the pushed push button switch 9 is pushed. 9 indicator lamp (LE
D) Only 9a is turned on (S43), the solenoid 40 of the selected product box 29 is turned on (S44), and in step S40, a change-out command is issued if the input amount ≧ the sales amount. After that, the process returns to step S3 through steps S34 to S38.

As described above, in this embodiment, when the push button switch 9 is pushed with the input amount ≧ the sales amount, the product box 2
Even if the door 6 of 9 is not fully opened, the change amount of the insertion amount-the sales amount is returned on condition that the push button switch 9 is pressed.

Further, if the push button switch 9 is not pressed in step S21, the process proceeds to step 22, where it is determined whether or not the change return processing is in progress (S22). Is prohibited (S50), and a change payout command is issued in step S51. After that, the process returns to step S3 through steps S34 to S38.

Here, when the change is returned, the input amount display unit (digital display) 14 displays the input amount-the sales amount, displays the unpaid amount for each withdrawal from the change device, and the withdrawal is normally performed. If not, the input amount display section (digital display) 14 blinks to display the unpaid amount. At this time, the sale stop lamp (LED) 8 is turned on and the coin is not accepted even if it is inserted.

Further, in the case of a refund by operating the return lever 26, the amount equivalent to the input amount is paid out from the change device with a 100-yen coin, the input amount display unit (digital display) 14 displays the input amount, and the return lever 26 is displayed. After the operation, a reduction amount is displayed for each withdrawal from the change device, and when the withdrawal is not normally performed, the input amount display section (digital display) 14 blinks to display the unpaid amount.

In this way, by displaying the unpaid amount, the customer can clearly grasp the amount of change shortage,
Trouble can be reduced.

If it is determined in step S22 that the change is not being returned, it is then determined whether or not the refund is being performed by operating the return lever 26 (S23). While monitoring the number of inserted coins (S45), the acceptance of coins is prohibited in step S50 and a change payout command is issued (S51). After that, steps S34 to S38
After that, the process returns to step S3.

When the refund process is not in progress, the process proceeds to step S24, where it is determined whether or not the input amount ≧ the sales amount.

If the input amount ≧ the sales amount, in step S46, the display lamps (LEDs) 9a of all the push button switches 9 of the sellable product box 29 are turned on, and then in step S47, either It is determined whether or not the push button switch 9 has been pressed. Then, if the push button switch 9 is pressed, the corresponding solenoid 40 of the product box 29 is turned on (S52) to set the inserted amount-sales amount (S53), and the process proceeds to step S34. After that, the process returns to step S3 through steps S34 to S38.

If it is determined in step S47 that the push button switch 9 has not been pressed, it is then determined in step S48 whether the return lever 26 has been operated. If not, the process proceeds to step S34. If the return levers 26 are operated, the display lamps (LEDs) 9a of all the push button switches 9 are turned off (S49), the receipt of coins is prohibited (S50), and a change payout command is issued (S51). ), Through steps S34-S38 to step S
Return to 3.

In step S24, the amount of money inserted is ≧
If it is not the sales amount, the process proceeds to step S25, where it is determined whether or not one coin has been inserted. If Yes, it is determined that the inserted coin is read (S54), and the process proceeds to step S55.

In this step 55, it is judged whether or not the coin processing machine is abnormal. If it is not abnormal, the process proceeds to step 56,
Here, it is determined whether or not the return lever 26 has been operated (S
56) If it is not operated, it is further determined in step S57 whether or not the input amount is equal to or greater than the sales amount. If Yes, the acceptance of coins is prohibited (S58), and the process proceeds to step S34. If the coin processing machine is abnormal in step 55, the process proceeds to step S50, the acceptance of coins is prohibited, a change payout command is issued (S51), and thereafter, the process returns to step S3 through steps S34 to S38.

In step S25, the coin is 1
If no coins have been thrown in, it is determined in step S26 whether or not there is change, and if there is no change, the sale stop lamp (LED) 8 is made to blink (S59), and step S62.
If there is change, the process proceeds to step S27, where it is determined whether all the doors 6 of the product box 29 are open.

If all the doors 6 of the product box 29 are opened, the display is turned off (S6).
0), turn on the sale stop lamp (LED) 8 (S6
1), the sales lamp (LED) 4 is also turned off (S62), coin reception is prohibited (S63), and the process proceeds to step S38.
It returns to step S3.

If it is determined in step S27 that the doors 6 of the product box 29 are not all opened, the process proceeds to step S28, in which it is determined whether the coin processing machine is abnormal. If there is an abnormality, the process proceeds to step S64 to monitor the number of inserted coins (S64), and in step S65, it is determined whether or not there are inserted coins, and if there is, the process proceeds to step S50 to prohibit the receipt of coins and to dispense the change. A command is issued (S51). After that, the process returns to step S3 through steps S34 to S38.

If there is no inserted coin in step S65, "Er-1" is displayed on the display (S66), and the process proceeds to step S61.

Further, if the coin processing machine is not abnormal in the above-mentioned step S28, the acceptance of coins is permitted (S29), the number of inserted coins is monitored (S30), and further, there is no inserted coin in step S31. To judge.
If there is a coin to be inserted, the process proceeds to step 55, the same steps as those described above are performed, and the process returns to step S3.

On the other hand, if there is no inserted coin in step S31, the process proceeds to step 67, where it is determined whether or not the service routine is set, and if not set, the amount setting is read ( S3
2) The process proceeds to step S33. If the service routine is set in step S67, the amount of the service routine is set (S68), and it is checked whether the door 6 of the product box 29 is open (S69), and the process proceeds to step S33. To do.

In step S33, the return lever 26
It is determined whether or not is ON-operated, and if it is ON-operated, the set amount of money is set (S70), and step S3
The set amount is displayed on the display at 5.

That is, according to the present embodiment, when the coin is not inserted and the return lever 26 is turned on, the set amount is displayed on the display, and the amount setting switch 32 of the internal control box 30 You can externally check how much the sales amount is set.

Generally, when coins are not inserted while the sales lamp (LED) 4 is lit, the display of the inserted amount display unit (display unit) 14 is not displayed, but in this state, the return lever The set amount is displayed only when 26 is turned on. Thereby, the seller can confirm the sales amount from the outside without opening the main body door 5. In addition, step S33
If the return lever 26 is not ON-operated in step 4, the process proceeds to step 34.

Further, in the present embodiment, the main body door 5
Open, set the money amount setting switch 32 of the control box 30 to “0”, and operate the return lever 26 to turn the main power switch 31 from OFF to ON, and then with the main body door 5 closed, The sale amount can be set by operating the two push button switches 9 and the return lever 26. As a result, it is possible to check the combination of the coin passage and the set amount at the time of shipping inspection, and it is possible to reduce the number of man-hours required for shipping checking.

[0060]

As described above, according to the present invention,
In addition to being equipped with a change device having a coin return port, the control device calculates the difference amount between the inserted amount and the sales amount when a larger amount of coins than the sales amount is inserted from the coin insertion port. However, on the condition that the selecting means with display function is operated, the command for paying out the amount of difference is sent to the change device, so that the product box door is not fully opened in the box. Even when the product is taken out, the product purchaser can certainly receive the change.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a vending machine according to the present invention.

FIG. 2 is a front view showing the same vending machine body.

FIG. 3 is an enlarged front view of a push button switch.

FIG. 4 is an enlarged view of a locking mechanism section of the vending machine.

FIG. 5 is a back view of the door of the product box of the vending machine.

6A is a cross-sectional view taken along the line AA in FIG. (B) is a BB line sectional view in FIG.

FIG. 7 is a control block diagram of a control device of the vending machine.

FIG. 8 is a diagram showing a control flow chart of the vending machine.

FIG. 9 is a diagram showing a control flow chart of the vending machine.

[Explanation of symbols]

 1 Vending Machine 3 Vending Machine Main Body 4 Sales Lamp 6 Door 8 Discontinuation Lamp 9 Push Button Switch 10 Coin Handling Machine 11 Coin Entry Port 14 Coin Amount Display 18 Change Device 24 Coin Return Port 26 Return Lever 29 Product Box 31 Main Power Supply Switch 32 Amount setting switch 79 Control device operation confirmation means 80 Coin insertion control means 81 Timer 82 Coin insertion control means 83 RAM 84 Change payout control means 85 Usage state confirmation means C Control device

Claims (1)

[Claims] 1. A coin processing device having a coin slot, openable and closable doors respectively provided in a plurality of product boxes capable of storing products, and a plurality of product boxes installed in each of the plurality of product boxes to open the door. A display means-selectable means that enables the display of a product box that is available for sale based on the coin insertion into the coin slot is indicated by a lighting display of the display-function-selected selection means, and is selected from a plurality of product boxes. In a vending machine comprising a control device for opening a door of a corresponding product box based on the operation of the selection means with a display function, a change device having a coin return port is provided, and the control device is When a coin larger than the sales amount is inserted from the coin insertion slot, the difference amount between the inserted amount and the sales amount is calculated, and the selection means with display function is operated. It condition was, the payout command amount for the difference component is transmitted towards the change device, and to return the change from the coin return slot, vending machine, characterized in that.