JPH04295310A - Showcase with shelf rotating function - Google Patents

Abstract

PURPOSE:To improve the degree of appeal to an exhibit by reversing the state of a rotary shelf between the rotation and stoppage according to a state reversing means set by a time setting means when a human detecting means detects the presence of the human. CONSTITUTION:When a rotary shelf 4 of a showcase is rotated in the day time and stopped in the night for example, the ON setting time of a twin timer is set to the day time and OFF setting time to the night. When a human detecting device 13 detects the presence of the human, a relay in the human detecting device 13 is operated to operate a buffer relay interlocked to the relay. Then, a motor drive relay stops its operation and current is not supplied to a motor 2 to stop the rotary shelf 4. When the human is absent, the relay and buffer relay in the human detecting device 13 are not operated so that current is supplied to the motor 2 and the rotary shelf 4 again begins to rotate.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase with a shelf rotation function.

0002

[Prior Art] As shown in FIG. 6, a conventional showcase with a shelf rotation function (hereinafter referred to as a case) is surrounded by an exterior glass 1 and connected to a motor 2 inside. It has a rotating shelf 4 fixed to a rotating shelf support 3 that rotates at a low speed.

The machine room 5 at the bottom of the case is equipped with a compressor 6, a condenser 7, a cooler 8, etc., and cold air from the cooler 8 is circulated inside the case by a cooling fan 9. The exhibits placed on the rotating shelf 4 are cooled down. Note that 10 is a transparent cover for the display stand 11, and 12 is a condenser fan.

The rotating shelf 4 of such a case normally rotates unless the power is turned off, but when the door (not shown) of the case is opened, a door opening/closing detection switch (not shown) detects this and turns on the motor. 2 is stopped, and the rotating shelf 4 is stopped. Thereby, the exhibits placed on the rotating shelf 4 can be taken out.

[0005]

[Problems to be Solved by the Invention] However, in such conventional cases, it is not possible to stop the rotating shelf in order to view the exhibited items in a stopped state. Therefore, in order to view an exhibit in a stopped state, the revolving shelf must be stopped by opening the case door, just as when taking out an exhibit.

However, having to open the door of the case to view the exhibits in a stopped state not only reduces the cooling effect on the exhibits inside the case; This creates a problem in that the appeal of the exhibit decreases because the desire to take a look at the exhibit is discouraged.

[0007] In addition, in conventional cases, when the rotating shelf is stopped, for example at night, in order to view the exhibits placed on the rotating shelf, it is necessary to go around the case. Furthermore, if the case is placed in a corner of a room, only part of the exhibit can be seen. As described above, even when the carousel is stopped, there is a problem in that the appeal of the exhibited items is reduced.

[0008] The present invention provides a showcase with a shelf rotation function that can change the state of rotation or stoppage of the rotating shelves of the showcase depending on the presence or absence of a person, and can improve the appeal of exhibits. The purpose is to provide the following.

[0009]

[Means for Solving the Problems] The present invention provides a rotating shelf that rotates with exhibits placed thereon, a rotating shelf support to which a plurality of these rotating shelves are fixed in the vertical direction, and a rotating shelf that rotates the rotating shelf support. In a showcase with a shelf rotation function, which is equipped with a motor that rotates the display and a switch that controls the rotation of the motor,
a human detection means for detecting the presence or absence of a person in front of the case; a time setting means for setting a rotation time and a stop time for cyclically rotating and stopping the rotating shelf; a driving means for rotating and stopping the rotating shelf according to a setting; and a state reversing means for reversing the rotating and stopping states of the rotating shelf driven by the driving means based on the detection of the presence of a human by the human detecting means. It is equipped with the following.

0010

[Operation] With this configuration, when the human detecting means detects the presence of a human in front of the showcase, the state reversing means cyclically rotates and stops the rotation of the driving means according to the setting of the time setting means. The rotating and stopping states of the shelves can be reversed.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front sectional view of a showcase with a shelf rotation function according to an embodiment of the present invention. In the same figure,
The same reference numerals as in FIG. 6 indicate the same or corresponding parts.

In the figure, 13 is a human detection device. The human detection device 13 detects the presence or absence of a human within a predetermined distance in front of the case, and uses, for example, a reflective ultrasonic sensor. The human detection device 13 is installed at a low position in front of the case where even a child can detect it, for example in the machine room 5.

Further, a twin timer (not shown) is provided in the machine room 5 in the figure. This twin timer is used to set the time during which the rotating shelf 4 rotates and the time during which it stops. That is, this twin timer sets an ON setting time for rotating the rotating shelf 4 and an OFF setting time for stopping the rotating shelf 4, and cyclically rotates and stops the rotating shelf 4.

Further, near the human detection device 13, motor drive relays 1 and 2 and a buffer relay (not shown) are provided. The motor drive relay 1 drives and stops the motor 2 according to the settings of the twin timer, and rotates and stops the rotating shelf 4. The motor drive relay 2 stops the rotation of the rotating shelf 4 when either a shelf rotation switch (not shown), which is a power switch for rotating the rotating shelf 4, or a door opening/closing detection switch are turned off.

The buffer relay is linked to a relay that becomes activated when the human detection device 13 inside the human detection device 13 detects the presence of a human being, and when this internal relay becomes activated, it becomes activated accordingly, and the twin The rotating and stopping states of the rotating shelf 4, which is cyclically rotating and stopping according to the timer settings, are reversed.

Next, the rotation and stopping operations of the rotating shelf of the case constructed as described above will be explained. For example, when the rotating shelf 4 of the case is rotated during the day and stopped at night, the on setting time of the twin timer is set to daytime, and the off setting time is set to night. In addition, a shelf rotation switch,
The door opening/closing detection switch is always turned on, and the human detection device 13 is always activated.

Human detection device 1 in this state during the daytime
FIG. 2 shows the relationship among the operations of the twin timer, the human detection device 13, the shelf rotation switch, the door opening/closing detection switch, the motor 2, etc. when the device 3 does not detect the presence of a human being.

In this case, the relay in the human detection device 13 does not operate, and therefore the buffer relay RY1 linked to this relay also does not operate. On the other hand, the Twin Timer TM is in the ON setting time, and at this time, the relay of the Twin Timer TM is in the operating state, and the motor drive relay 1RY2
becomes active.

Furthermore, since the shelf rotation switch SW1 and the door opening/closing detection switch SW2 are on, the motor drive relay 2RY3 is in an operating state. Due to the states of the relays and switches, current from a power source (not shown) is supplied to the motor 2, the motor 2 is driven, and the rotating shelf 4 is also rotated in conjunction with this.

FIG. 3 shows the relationship between the operations of the twin timer TH, the human detector 13, etc. when the human detector 13 detects the presence of a human in this state.

When the human detection device 13 detects the presence of a human, the relay within the human detection device 13 is activated, and the buffer relay RY1 linked to this relay is also activated. When buffer relay RY1 is activated, motor drive relay 1RY2 is deactivated and motor 2
No current is supplied to the motor 2, and the motor 2 stops. This causes the rotating shelf 4 to stop.

Note that when there is no longer a person present, the relay and buffer relay RY1 in the human detection device 13 also become inactive, returning to the state shown in FIG. starts rotating again.

Furthermore, if either the shelf rotation switch SW1 or the door opening/closing detection switch SW2 is turned off, the motor drive relay 2RY3 will no longer operate, and the motor 2 will stop regardless of whether or not the human detection device 13 detects a human being. do.

Next, the relationship between the operations of the twin timer TM, the human detection device 13, etc. when the human detection device 13 does not detect the presence of a human at night when the off setting time of the twin timer is set is illustrated. 4.

In this state, the relay of the twin timer TM does not operate, and the relay in the human detection device 13 and buffer relay RY1 also do not operate. Therefore, motor drive relay 1RY2 is also not activated, and motor 2 is in a stopped state.

FIG. 5 shows the relationship between the operations of the twin timer TM, the human detector 13, etc. when the human detector 13 detects the presence of a human in this state.

In this case, the relay of the twin timer TM14 is not activated, but the relay in the human detection device 13 is activated, and the buffer relay RY1 is also activated. As a result, the current is directly supplied from the buffer relay RY1 to the motor 2 without passing through the motor drive relay 1RY2, so the motor 2 is driven and the rotating shelf 4 is also rotated in conjunction with this.

Note that when there is no longer a person present, the relay in the human detection device 13 and the buffer relay RY1 also become inactive, returning to the state shown in FIG. 4, so that no current is supplied to the motor 2, and the motor 2 stops. .

As described above, by providing the human detection device, the twin timer, the buffer relay, and the motor drive relay 1, it is possible to change the state of rotation and stop of the rotary shelf of the case depending on the presence or absence of a person.

In the above description, the human detection means is installed at the front of the case, but depending on the installation position of the case, it may be installed not only at the front but also at the side.

[0032]

As described above, according to the present invention, when the human detection means detects the presence of a human in front of the showcase, the state reversing means cyclically activates the driving means according to the setting of the time setting means. It is possible to reverse the rotation and stop state of the rotating shelf that has been rotated and stopped. Also, humans
By passing in front of the exhibit, the stopped case will start rotating, or the rotating case will stop, attracting the attention of passersby and increasing the appeal of the exhibit. Can be done.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a showcase with a shelf rotation function according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the operation of a showcase with a shelf rotation function according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of the operation of a showcase with a shelf rotation function according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram of the operation of a showcase with a shelf rotation function according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram of the operation of a showcase with a shelf rotation function according to an embodiment of the present invention.

FIG. 6 is a front sectional view of a conventional showcase with a shelf rotation function.

[Explanation of symbols]

2 Motor 4 Rotating shelf 13 Human detection device TM Twin timer SW1　Shelf rotation switch SW2 Door open/close detection switch

Claims (1)

[Claims] [Claim 1] A rotating shelf on which exhibits are placed and rotated;
A showcase with a shelf rotation function that includes a rotating shelf support to which a plurality of rotating shelves are fixed in the vertical direction, a motor that rotates the rotating shelf support, and a switch that controls the rotational operation of this motor. a human detection means for detecting the presence or absence of a person in front of the showcase; a time setting means for setting a rotation time and a stop time for cyclically rotating and stopping the rotating shelf; A driving means for rotating and stopping the rotating shelf according to the setting of a time setting means, and a reversing state of rotation and stopping of the rotating shelf driven by the driving means based on the detection of the presence of a human by the human detecting means. A showcase with a shelf rotation function, characterized in that it is equipped with a state reversal means.