JP2022007355A - Display device and plant display method - Google Patents

Abstract

To provide a display device capable of maintaining the state of plants being displayed in good condition and a method for displaying plants.SOLUTION: The display device of the present invention comprises an irradiation unit that irradiates displayed plants with light, a control unit that controls the irradiation unit, and a detection unit that detects an approaching person to the display device. The control unit causes the irradiation unit to irradiate light during a detection period when the detection unit detects the approaching person. The control unit adjusts the amount of irradiation during a non-detection period when the detection unit does not detect the approaching person based on a set value regarding the amount of irradiation according to the product of the irradiation intensity of the light irradiated by the irradiation unit and the irradiation time, and the amount of irradiation in the detection period.SELECTED DRAWING: Figure 3

Description

The present invention relates to a display device for displaying plants and a method for displaying plants.

When displaying vegetables or fresh flowers, which are commercial products, in a display device such as a showcase in a store or the like, the plants may be irradiated with light for the purpose of improving the appearance of the plants.
Further, as a display device for plants, a device having a cultivation room for cultivating plants inside and allowing the cultivation room to be observed (visually) from the outside has been developed (see, for example, Patent Document 1). In the display device described in Patent Document 1, a lighting device is provided in the cultivation room, and the lighting device irradiates the plant with light to promote the growth of the plant.

Japanese Unexamined Patent Publication No. 2013-34402

When irradiating the plants displayed in the display device with light, if the amount of light irradiating the plants is too small, the appeal to the customer will be reduced. In addition, when the irradiation amount to the plant is small, the appearance of the plant may be deteriorated due to the occurrence of a legginess, which is a phenomenon in which the stem or the like of the plant is elongated in search of light. On the contrary, if the amount of light applied to the plant is too large, the quality of the plant (for example, flavor, etc.) may change.

The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the following object.
It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a display device capable of maintaining a good state of plants during display, and a method for displaying plants.

In order to achieve the above object, the display device of the present invention is a display device for displaying plants, and includes an irradiation unit that irradiates the displayed plants with light, a control unit that controls the irradiation unit, and the like. The detection unit that detects an approaching person to the display device and the control unit irradiate the irradiation unit with light during the detection period when the detection unit detects an approaching person, and the irradiation intensity and irradiation time of the light emitted by the irradiation unit. The feature is that the detection unit adjusts the irradiation amount in the non-detection period in which the approaching person is not detected, based on the set value regarding the irradiation amount according to the product of the above and the irradiation amount in the detection period.

According to the display device of the present invention configured as described above, when an approaching person to the display device is detected, the displayed plant is irradiated with light to improve the appearance of the plant and attract the attention of the approaching person. be able to. Further, in the display device of the present invention, the light is displayed by adjusting the irradiation amount in the non-detection period in which the approaching person is not detected, based on the irradiation amount of light in the detection period in which the approaching person is detected and the set value regarding the irradiation amount. The total amount of irradiation to the plant is controlled. As a result, the displayed plants can be irradiated with light in just proportion, and as a result, the state of the displayed plants can be maintained in good condition.

Further, in the display device of the present invention, the displayed plants may be held in a medium, and water or nutrient solution may be supplied to the medium. With such a configuration, the displayed plants can be supplied with water or nutrient solution, and the freshness of the plants can be appropriately maintained during the display.

Further, in the display device of the present invention, the control unit may adjust the irradiation amount in the non-detection period so that the total value of the irradiation amount in the detection period and the irradiation amount in the non-detection period becomes a set value. Thereby, the total amount of irradiation to the displayed plants can be adjusted to a preferable amount for the plants, and the state of the plants on display can be maintained in a good state.

Further, the display period of the displayed plants may be divided into a plurality of unit periods. In such a case, the control unit does not detect so that the total value becomes a correction setting value smaller than the set value in the unit period after the unit period in which the total value exceeds the set value among the plurality of unit periods. It is preferable to adjust the irradiation amount during the period.
In the above configuration, if the total value of the irradiation amount exceeds the set value in one of the plurality of unit periods, the total value of the irradiation amount is smaller than the set value in the subsequent unit period (correction setting). The irradiation amount in the non-detection period is adjusted so as to be (value). This makes it possible to adjust the total amount of irradiation during display.

Further, in the display device of the present invention, the control unit may continue to irradiate the irradiation unit with light so that the total value does not exceed the set value during the non-detection period. With such a configuration, the plants can be irradiated with light even during the non-detection period, and for example, a person who is away from the display device can be notified of the presence of the displayed plants.

Further, in the display device of the present invention, the control unit may continue to irradiate the irradiation unit with light by blinking the light source of the irradiation unit during the non-detection period. With such a configuration, it is possible to more effectively inform the person who is away from the display device of the presence of the displayed plant.

Further, in the display device of the present invention, the control unit integrates the light irradiation time in the detection period, and adjusts the light irradiation time in the non-detection period based on the integrated value and the set value of the irradiation time in the detection period. You may.
With the above configuration, the total value of the irradiation amount can be set as the set value by adjusting the light irradiation time in the non-detection period based on the integrated value and the set value of the light irradiation time in the detection period. Can be adjusted to.

Further, in the display device of the present invention, the control unit may irradiate the irradiation unit with light at the same irradiation intensity as the irradiation intensity of the light during the detection period during the non-detection period. In such a case, since it is not necessary to change the irradiation intensity of light between the detection period and the non-detection period, it becomes easier to adjust the total value of the irradiation amounts to be the set value.

Further, in the display device of the present invention, it is more preferable that the light irradiation intensity during the detection period is 30% or more of the light saturation point of the displayed plant. Further, it is even more preferable that the light irradiation intensity during the detection period is 200% or less of the light saturation point of the displayed plants.

Further, in order to solve the above-mentioned problems, the plant display method of the present invention is a plant display method for displaying plants by a display device, in which the displayed plants are irradiated with light from an irradiation unit and a control unit is used. The irradiation unit is controlled by the detection unit, and the detection unit detects an approaching person to the display device. In the control of the irradiation unit by the control unit, the irradiation unit is irradiated with light during the detection period when the detection unit detects the approaching person, and Adjusting the irradiation amount in the non-detection period when the detection unit does not detect an approaching person based on the set value regarding the irradiation amount according to the product of the irradiation intensity and the irradiation time of the light emitted by the irradiation unit and the irradiation amount in the detection period. It is characterized by.
According to the above method, the displayed plants can be irradiated with light in just proportion, and the state of the displayed plants can be maintained in good condition.

According to the present invention, it is possible to detect an approaching person to the display device and irradiate the displayed plants with light in just proportion according to the detection result. As a result, the condition of the plants on display can be maintained in good condition. Specifically, the freshness of the displayed plants can be maintained, and the plants can be displayed for a long period of time in the display device. In addition, the appearance of the plant can be maintained well by irradiating the displayed plant with an appropriate amount of light, and the appearance of the plant can be improved by the lighting.

It is a figure which shows the appearance of the display apparatus which concerns on one Embodiment of this invention, and shows the cross section of the cultivation tray and the apparatus arranged inside thereof. It is explanatory drawing of the control system of the display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the procedure of the display method of this invention. It is a figure which shows the procedure of light irradiation to the displayed plant. It is a figure which shows the procedure of light irradiation which concerns on a modification.

A display device and a plant display method according to an embodiment of the present invention (hereinafter referred to as the present embodiment) will be described in detail with reference to the preferred embodiments shown in the accompanying drawings.
It should be noted that the embodiments described below are examples given for facilitating the understanding of the present invention, and do not limit the present invention. That is, the present invention may be modified or improved from the embodiments described below as long as it does not deviate from the gist thereof. Further, as a matter of course, the present invention includes the equivalent thereof.

<< Basic configuration of the display device of this embodiment >>
The display device of the present embodiment (hereinafter referred to as a display device 10) is a device for displaying plants and has the appearance shown in FIG. The display device 10 is arranged in stores and offices selling fresh foods such as greengrocers, supermarkets and department stores, and kitchens of accommodation facilities such as restaurants, hotels and inns.

Hereinafter, the configuration of the display device 10 installed in the store will be described by giving a specific example. The display device 10 is provided with a movable tool 12 such as a caster. For example, the display device 10 is arranged in a place in the store where visitors (customers) can easily see the store during business hours of the store, and the store is located during non-business hours. It is transported to the backyard of the store. However, the present invention is not limited to this, and the display device 10 may be fixedly installed at a predetermined position in the store at all times.

As shown in FIG. 1, the display device 10 displays edible plants such as vegetables and fruit trees or ornamental plants such as fresh flowers (hereinafter referred to as plant P) in a rooted state. More specifically, in the display device 10, the plant P that has grown to a sellable state is continuously cultivated by the hydroponic cultivation method, and the cultivated plant P is displayed in a visible state. "Cultivation" here means cultivation for maintaining the freshness of the plant P during the display period.

The plant P displayed by the display device 10 is not particularly limited as long as it is a plant to be sold in stores, but for example, basil, lemon basil, pakuchi, mint, mitsuba, parsley, celery, arugula, stevia, and the like. Examples include rosemary and leaf onion.

As shown in FIG. 1, the display device 10 has a plurality of shelf boards 14 arranged one above the other, a support column 16 that supports each shelf board 14, and a housing 18 that forms a base of the support columns 16. Three shelf boards 14 are provided in the case shown in FIG. 1, and each shelf board 14 is fixed to the support column 16 at regular intervals in the vertical direction. Cultivation trays 20 having an open upper surface are placed on the second and third shelf boards 14 from the top, respectively. Water is stored in the cultivation tray 20, and the planting plate 22 is floating on the liquid surface. In addition, in the cultivation tray 20, instead of water, a nutrient solution containing a component useful for cultivation (maintaining freshness) of the displayed plant P may be stored.

A plurality of through holes 22a having a predetermined size are formed in the planting plate 22, and as shown in FIG. 1, a cultivation cup 26 containing a medium 24 is fitted in each through hole 22a. The medium 24 is made of urethane or sponge formed into a substantially cubic shape, and holds the plant P by spreading the roots of the plant P in the medium 24. The cultivation cup 26 is, for example, a vinyl cup, and a bottom hole 26a is provided at the bottom thereof. When the cultivation cup 26 is fitted into the planting plate 22 and the bottom of the cup is immersed in the water or nutrient solution in the cultivation tray 20, the water or nutrient solution infiltrates the medium 24 contained in the cup through the bottom hole 26a. As a result, water or nutrient solution is supplied to the roots of the plant P held by the medium 24.

In the display device 10, the plant P was floated on the water or the nutrient solution in the cultivation tray 20 placed on the shelf board 14, specifically, the medium 24 for holding the root was immersed in the water or the nutrient solution. It is displayed in the state. The same type of plant P may be displayed or different types of plant P may be displayed among the plurality of shelf boards 14 on which the cultivation tray 20 is placed.

Further, the display device 10 of the present embodiment is configured so that the plants P displayed on the shelf board 14 can be easily reached by humans. For example, the front surface of the space above each shelf board 14 is opened. It is composed. Therefore, the customer can access the plant P by standing in front of the display device 10 and reaching for the space above the shelf board 14 on which the plant P is displayed, grasp the plant P, and take it out of the display device 10. can.
The shelf board 14 may be surrounded by a glass plate, a transparent acrylic plate, or the like, and an opening / closing window or an opening / closing door for taking out the plant P may be provided at an appropriate place in the surrounding.

The period from when the plant P to be displayed is displayed on the display device 10 to when it is taken out for purchase or disposal corresponds to the display period of the plant P. The maximum value of the display period is determined according to the type of plant P. In addition, the display period is divided by a plurality of unit periods. The unit period is arbitrarily determined such as 1 minute or several minutes, 1 hour or several hours, or 1 day or several days, but in the present embodiment, 1 day is used as the unit period.

As shown in FIG. 1, the housing 18 contains a storage tank 28 for storing water or nutrient solution supplied to the cultivation tray 20 of each stage, and a circulation pump 30 for circulating the water or nutrient solution in the storage tank 28. And are housed. The circulation pump 30 sends the water or nutrient solution in the storage tank 28 to the cultivation tray 20 of each stage through a liquid feeding line (not shown), and the water or nutrient solution in the cultivation tray 20 is returned (not shown). It is returned to the storage tank 28 through the line.

In this embodiment, water or nutrient solution is circulated between the cultivation tray 20 of each stage and the storage tank 28. Therefore, the water temperature (liquid temperature) in the cultivation tray 20 can be lowered by providing a cooling device such as a chiller for cooling the water or liquid in the storage tank 28. However, the water or nutrient solution supply method is not limited to the circulation method, and the water or nutrient solution may be supplied into the cultivation tray 20 by a non-circulation method.

As shown in FIG. 1, the display device 10 includes an irradiation unit 32 that irradiates the plants P displayed on the shelf board 14 with light. In the present embodiment, the irradiation unit 32 is provided for each shelf plate 14. Specifically, as shown in FIG. 1, a light source 34 for spot illumination is arranged on the lower surface of each of the first and second shelf boards 14 from the top, and the light emitted by each light source 34 is The plants P displayed on the shelf board 14 directly under each light source 34 are irradiated.

The light source 34 includes an inorganic or organic LED (Light Emitting Diode) or a semiconductor light emitting element such as a laser, a fluorescent lamp, a mercury lamp, a rare gas lamp, a discharge tube such as an electrodeless lamp, a filament light emitter such as an incandescent lamp, and emitted light. Alternatively, those due to energy transition such as fluorescence can be used.
Further, the light source 34 of the irradiation unit 32 is not limited to the one that irradiates the plant P displayed on the shelf board 14 with light from above, and although not shown, the light source 34 is arranged on the upper surface of the shelf board 14. The plant P displayed on the shelf board 14 may be irradiated with light from below.

In this embodiment, the irradiation unit 32 is provided for each shelf board 14, and for example, when the types of plants P to be displayed differ between the shelf boards 14, the light emitted by each irradiation unit 32 The wavelength may be changed according to the type of plant P.

Further, in the present embodiment, the intensity (that is, irradiation intensity) when the irradiation unit 32 irradiates light is variable. As a configuration for changing the irradiation intensity, the light emission intensity of the light source 34 may be changed, or the number of lights of the light source 34 per unit area may be changed. Further, it is preferable that the light source 34 is capable of blinking at a constant intensity.

As shown in FIG. 2, the display device 10 has a detection unit 36 that detects an approaching person to the display device 10, and a control unit 38 that controls light irradiation by the irradiation unit 32.

The detection unit 36 is composed of a known motion sensor mounted on the front surface of the display device 10, and detects a person as an approaching person when the person is located within a predetermined distance from the front surface of the display device 10. , Outputs a signal according to the detection result. For example, when a customer who visits the store is located within a predetermined distance from the display device 10, the motion sensor forming the detection unit 36 detects the customer.

The detection unit 36 is not limited to the motion sensor, but may be a camera that captures the vicinity of the display device 10 and an image analysis device that can analyze the image captured by the camera and determine the presence or absence of a person in the vicinity of the display device 10. It may be configured.

The control unit 38 is composed of a drive control circuit (not shown) attached to a predetermined position of the display device 10. The drive control circuit consists of a memory and a processor that executes the program stored in the memory. As the processor, the circuit configuration is changed after manufacturing a general-purpose CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), etc. Programmable Logic Device (PLD), which is a possible processor, and dedicated electric circuit, which is a processor having a circuit configuration specially designed for performing specific processing such as ASIC (Application Specific Integrated Circuit), etc. It is available. Further, the control circuit may be configured by one of the various processors described above, or by a combination of two or more processors of the same type or different types, for example, a combination of a plurality of FPGAs, a combination of FPGAs and a CPU, and the like. It may be configured. Further, as typified by System on Chip (SoC), a processor that realizes the functions of the entire system including a plurality of control circuits with one IC (Integrated Circuit) chip may be used.

Further, the control unit 38 may be configured to include a computer (hereinafter, a control computer) (not shown) that remotely controls the display device 10. In such a configuration, the display device 10 and the control computer are communicably connected by a wired method or a wireless method, and the drive control circuit on the display device 10 side receives a control signal from the control computer and uses the received control signal as the received control signal. The irradiation unit 32 is controlled accordingly.

The control unit 38 adjusts the irradiation amount of the light emitted from the irradiation unit 32 in one day (that is, a unit period). The irradiation amount is an amount corresponding to the product of the irradiation intensity (illuminance) and the irradiation time of the light irradiated by the irradiation unit 32, that is, the integrated light amount, and the unit is J / cm ² . Here, the irradiation amount according to the product of the irradiation intensity and the irradiation time may be an amount having the same value as the product of the irradiation intensity and the irradiation time, or an amount obtained by multiplying the product by a predetermined coefficient, or a predetermined product. It may be an amount obtained by adding the values of. The amount of light irradiated by the control unit 38 will be described in detail later.

As shown in FIG. 1, the display device 10 according to the present embodiment includes a display 40 as a display device. The display 40 is installed at a suitable height in front of the display device 10, and displays a message or the like recommending the plant P displayed on the display device 10 to a customer in the vicinity of the display device 10. The display 40 is an accessory device of the display device 10, and may not necessarily be provided.

<< About adjustment of irradiation amount >>
In the present embodiment, the control unit 38 causes the irradiation unit 32 to irradiate light during the detection period when the detection unit 36 detects an approaching person to the display device 10. As a result, it is possible to illuminate the displayed plant P to improve the appearance of the plant P and stimulate the purchasing motivation of the approaching customer.

Further, the control unit 38 adjusts the irradiation amount in the non-detection period in which the detection unit 36 does not detect an approaching person, based on the set value regarding the irradiation amount of the light emitted by the irradiation unit 32 in one day and the irradiation amount in the detection period. do. Specifically, the control unit 38 adjusts the irradiation amount in the non-detection period so that the total value of the irradiation amount in the detection period and the irradiation amount in the non-detection period becomes a set value.

The "set value regarding the irradiation amount" is a recommended value of the irradiation amount of light in one day (unit period), is set in advance according to the plant P to be displayed, and the type of the plant P is stored in the memory constituting the control unit 38. It is remembered every time. When a plurality of types of plants P are displayed on different shelf boards 14 in the display device 10, the control unit 38 reads the set value for each plant P from the memory and adjusts the irradiation amount during the non-detection period. It will be carried out every time.

As described above, in the present embodiment, the control unit 38 adjusts the irradiation amount of light in one day (strictly speaking, the total value of the irradiation amounts in the detection period and the non-detection period) so as to be a set value. The displayed plant P can be irradiated with light in just proportion. As a result, the state of the plant P on display can be maintained in a good state, and the freshness can be kept good without changing the quality such as flavor.
Further, if the amount of light irradiated to the displayed plant P is small, the appearance of the plant P may be deteriorated due to the legginess of the stem of the plant P and the lengthening of the internode distance. By irradiating the plant P with light in just proportion, it is possible to suppress deterioration of the appearance of the plant P due to the legginess.

The control unit 38 may irradiate the irradiation unit 32 with light at the same irradiation intensity as the light irradiation intensity during the detection period during the non-detection period, or may irradiate the irradiation unit 32 with an intensity different from the irradiation intensity during the detection period. You may let me. If the irradiation intensity in each of the detection period and the non-detection period is the same, it is not necessary to change the irradiation intensity between the detection period and the non-detection period, so that the control of the irradiation amount becomes easier.

Further, when the irradiation intensity is the same between the detection period and the non-detection period, the control unit 38 integrates the light irradiation time in the detection period in one day. Then, the control unit 38 adjusts the light irradiation time in the non-detection period based on the integrated value and the set value of the irradiation time in the detection period in one day. That is, when the irradiation intensity in the detection period and the irradiation intensity in the non-detection period are the same, the irradiation time in the non-detection period is adjusted based on the set value as the adjustment of the irradiation amount. In this case, the set value regarding the irradiation amount may be a value converted into the irradiation time.

The irradiation amount adjustment by the control unit 38 will be described in more detail with reference to the flow of the irradiation amount adjustment flow shown in FIG. The irradiation amount adjustment flow is executed by the control unit 38 and repeated on a daily basis.

When the irradiation amount adjustment flow is executed, the plant P to be displayed is displayed on the display device 10. Then, on each day, the execution of the irradiation amount adjustment flow is started at the business hours of the store (S001).

When the irradiation amount adjustment flow is executed, the detection unit 36 monitors the presence or absence of an approaching person to the display device 10, for example, a customer near the display device 10. When the detection unit 36 detects an approaching person (S002), the control unit 38 turns on the light source 34 of the irradiation unit 32 provided for each shelf plate 14 and irradiates light from each irradiation unit 32 (S003). As a result, the plants P displayed on each shelf board 14 are irradiated with light of a predetermined intensity. The light irradiation at this time corresponds to the light irradiation during the detection period.

The light irradiation intensity during the detection period is set to a value suitable for the displayed plant P, and is preferably 30% or more and 200% or less of the light saturation point of the displayed plant P, for example, 30. It is more preferably% or more and 100% or less.
As an example of the light saturation point, lettuce, basil, onion and strawberry have a light saturation point of about 25,000 lux, and Japanese honeywort and myoga have a light saturation point of about 20,000 lux.

The control unit 38 keeps irradiating light from each irradiation unit 32 while the detection unit 36 detects the approaching person, and when the approaching person is separated from the display device 10 by a predetermined distance or more, the detecting unit 36 detects the approaching person. Light irradiation is stopped when it is no longer detected. However, the present invention is not limited to this, and the light may be emitted from each irradiation unit 32 for a certain period of time from the time when the detection unit 36 detects an approaching person, and may be turned off after a certain period of time has elapsed.

The irradiation of light during the detection period is repeated every time the detection unit 36 detects an approaching person during the business hours of the store. The control unit 38 specifies the irradiation time in each detection period of the day, and stores each specified irradiation time in the memory.

Then, when the business hours of the day end (S004), the control unit 38 integrates the irradiation time in each detection period of the day (S005). Further, the control unit 38 determines whether or not the irradiation amount corresponding to the integrated value of the irradiation time (in other words, the integrated value of the irradiation amount during business hours) exceeds the set value (S006).
When plants P of different types are displayed for each type of shelf board 14 in the display device 10, the above-mentioned determination step S006 is performed for each type of plant P.

When the irradiation amount corresponding to the integrated value of the irradiation time is less than the set value, the control unit 38 controls each irradiation unit 32 so that the light of the irradiation amount corresponding to the difference is irradiated after the business hours (S007). ). The light irradiation at this time corresponds to the light irradiation during the period in which the detection unit 36 does not detect an approaching person, that is, in the non-detection period. In the step S007 of irradiating light during the non-detection period, in order to collectively irradiate the shortage of the recommended daily irradiation amount exceeding the irradiation amount in the detection period, as shown in FIG. Is continuously irradiated with light of a predetermined intensity from each irradiation unit 32. FIG. 4 is a diagram showing the procedure of light irradiation on the displayed plants. Specifically, the light irradiation time and the irradiation intensity in each of the detection period and the non-detection period are shown, and the horizontal axis represents the time and the vertical axis represents the time. The axis represents the irradiation intensity.

The irradiation intensity of light during the non-detection period may be the same level as or different from the irradiation intensity during the detection period during business hours. For example, if the irradiation intensity during the non-detection period is set to a higher level, the irradiation time during the same period can be shortened.

As described above, the control unit 38 adjusts the irradiation amount in the non-detection period so that the total value of the irradiation amount in the detection period and the irradiation amount in the non-detection period becomes a set value. As a result, the displayed plant P is irradiated with the irradiation amount corresponding to the set value (that is, the recommended daily irradiation amount), and as a result, the freshness of the displayed plant P is maintained. Moreover, changes in quality such as flavor can be suppressed.

When plants P of different types are displayed for each shelf board 14 in the display device 10, the set value may change depending on the type of plant P, so that when irradiating light during the non-detection period. It is preferable to change the irradiation time and irradiation intensity according to the type of plant P.

Returning to the explanation of the irradiation amount adjustment flow, when it is determined in the above determination step S006 that the irradiation amount corresponding to the integrated value of the irradiation time exceeds the set value, the control unit 38 will perform after the business hours of the day ( The light irradiation during the non-detection period) is not performed, and the set value for the irradiation amount on the next day is corrected (S008). More specifically, if the irradiation amount according to the integrated value of the irradiation time exceeds the set value, the irradiation amount corresponding to the excess amount is subtracted from the set value to correct it, and the corrected set value is the set value of the next day. And. Then, on the next day, the control unit 38 adjusts the irradiation amount after the end of business (non-detection period) on the next day so that the total value of the irradiation amount on that day becomes the above-mentioned correction set value.

As described above, when the total value of the irradiation amount on a certain day exceeds the set value, the control unit 38 sets the correction setting value so that the total value of the irradiation amount is smaller than the set value after that day. Adjust the irradiation dose during the non-detection period. As a result, even if there is a day when the total value of the irradiation amount exceeds the set value, by reducing the set value after that day, it is possible to adjust the total amount of the irradiation amount to the plant P during the display. ..

When plants P of different types are displayed on the display device 10 for each shelf board 14, and there is a plant P whose total irradiation amount on that day exceeds the set value, the plant P is referred to. The step S008 for correcting the set value on the next day may be carried out.

Then, when the steps described above are completed, the irradiation amount adjustment flow in one day is completed.

<< Other Embodiments >>
Although the display device of the present invention and the display method of plants have been described above with specific examples, the above-described embodiment is merely an example given for facilitating the understanding of the present invention, and other than the above. The embodiment of is also conceivable.

For example, in the above embodiment, a plurality of shelf boards 14 arranged in the vertical direction are provided, and the plant P is displayed for each shelf board 14. That is, in the above embodiment, it is determined that there are a plurality of places where the plants P are displayed in one display device 10, but the present invention is not limited to this, and the places where the plants are displayed in the display device are not limited to this. There may be only one.

Further, in the above embodiment, the non-detection period is set after the business hours of the store, and the light irradiation amount after the business hours is adjusted based on the light irradiation amount and the set value regarding the irradiation amount during the detection period during the business hours. It was decided to. More specifically, after business hours, it was decided to collectively irradiate the light of the irradiation amount corresponding to the difference between the light irradiation amount and the set value in the detection period.
However, the present invention is not limited to the above form, and the light irradiation amount during the non-detection period during business hours, for example, the light irradiation amount during the time period when there is no customer near the display device 10 during business hours, is detected during the business hours. It may be adjusted based on the irradiation amount of light and the set value in. In this case, as shown in FIG. 5, the control unit 38 may continue to irradiate the irradiation unit 32 with light so that the total value of the irradiation amount on that day does not exceed the set value during the non-detection period during business hours. good. By irradiating the light during the non-detection period during the business hours in this way, it is possible to notify (appeal) the existence of the displayed plant P to the customer who is away from the display device 10.
As shown in FIG. 5, the irradiation intensity during the non-detection period during business hours may be set lower than the irradiation intensity during the detection period. Further, the control unit 38 may continue to irradiate the irradiation unit 32 with light by blinking the light source 34 of the irradiation unit 32 during the non-detection period during the business hours. As a result, it is possible to more effectively inform (appeal) the existence of the displayed plant P to the customer who is away from the display device 10.

10 Display device 12 Movables 14 Shelf board 16 Strut 18 Housing 20 Cultivation tray 22 Planting plate 22a Through hole 24 Medium 26 Cultivation cup 26a Bottom hole 28 Storage tank 30 Circulation pump 32 Irradiation unit 34 Light source 36 Detection unit 38 Control unit 40 Display

Claims (10)

A display device for displaying plants,
An irradiation part that irradiates the displayed plants with light,
A control unit that controls the irradiation unit and
A detection unit that detects an approaching person to the display device,
The control unit irradiates the irradiation unit with light during the detection period when the detection unit detects an approaching person, and relates to an irradiation amount according to the product of the irradiation intensity and the irradiation time of the light irradiated by the irradiation unit. A display device that adjusts the irradiation amount in the non-detection period in which the detection unit does not detect the approaching person based on the set value and the irradiation amount in the detection period. The display device according to claim 1, wherein the displayed plants are held in a medium, and water or nutrient solution is supplied to the medium. The control unit adjusts the irradiation amount in the non-detection period so that the total value of the irradiation amount in the detection period and the irradiation amount in the non-detection period becomes the set value, claim 1 or 2. The display device described in. When the display period of the displayed plants is divided into multiple unit periods,
The control unit becomes a correction setting value in which the total value is smaller than the set value in the unit period after the unit period in which the total value exceeds the set value among the plurality of the unit periods. The display device according to claim 3, wherein the irradiation amount is adjusted during the non-detection period. The display device according to claim 3 or 4, wherein the control unit keeps irradiating the irradiation unit with light so that the total value does not exceed the set value during the non-detection period. The display device according to claim 5, wherein the control unit blinks the light source of the irradiation unit to continuously irradiate the irradiation unit with light during the non-detection period. 3. The control unit integrates the light irradiation time in the detection period, and adjusts the light irradiation time in the non-detection period based on the integrated value of the irradiation time in the detection period and the set value. Or the display device according to 4. The display device according to any one of claims 1 to 7, wherein the light irradiation intensity during the detection period is 30% or more of the light saturation point of the displayed plant. The display device according to any one of claims 1 to 8, wherein the light irradiation intensity during the detection period is 200% or less of the light saturation point of the displayed plant. It is a method of displaying plants by using a display device.
Irradiate the displayed plants with light from the irradiation part,
The irradiation unit is controlled by the control unit, and the irradiation unit is controlled.
The detection unit detects an approaching person to the display device and
In the control of the irradiation unit by the control unit, the irradiation unit is irradiated with light during the detection period when the detection unit detects an approaching person, and the product of the irradiation intensity and the irradiation time of the light irradiated by the irradiation unit. A plant display method for adjusting the irradiation amount in the non-detection period in which the detection unit does not detect the approaching person, based on the set value regarding the irradiation amount according to the above and the irradiation amount in the detection period.

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