JP2012125204A - Lighting device for plant cultivation and plant cultivation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress decline of the efficiency of irradiation with solar light when plants are cultivated with both artificial light and solar light.SOLUTION: A cultivation unit 3 includes: a frame body 10 whose top is open; artificial light irradiation parts 20 for applying artificial light to cultivation plants stored in the frame body 10 from the upper side of the frame body 10; and support parts 30 for supporting the artificial light irradiation parts 20 to the frame body 10. The artificial light irradiation parts 20 include a first irradiation body 21, a second irradiation body 22 and a third irradiation body 23 each of which has a plate-shaped radiation plate and a light emission part. The artificial light irradiation parts are supported in the frame body 10 by the support parts 30 in such a way that solar light can pass through the first irradiation body 21 to the third irradiation body 23. The inclination of the first irradiation body 21 to the third irradiation body 23 can be adjusted according to the altitude of the sun.

Description

  The present invention relates to a lighting device for plant cultivation used for cultivation of plants such as agricultural crops, and more particularly to a lighting device for plant cultivation used in a plant cultivation system using sunlight and artificial light in combination.

In recent years, plant factories that produce plants such as crops by controlling various conditions that affect plant growth, such as light, temperature, humidity, and carbon dioxide concentration in the cultivation environment, to create an agricultural environment that is not affected by changes in natural conditions Etc. are being put to practical use.
And in cultivation of a plant in such a plant factory, what uses natural light (sunlight) and artificial light together exists (refer patent documents 1-3).

JP 2007-259796 A JP 2008-182951 A JP 2008-092859 A

  However, when artificial light and sunlight are used in combination, the artificial light illumination device must be placed between the plant that is the object to be irradiated and the sun that is the light source of sunlight. There was a concern that sunlight was blocked by the device, and that the amount of sunlight irradiated to the plant was lost. Moreover, there is a concern that the amount of energy received by the plant differs between the place where the sunlight is blocked by the lighting device and the place where the sunlight is not blocked, resulting in uneven growth.

  An object of this invention is to suppress that the irradiation efficiency of sunlight falls, when planting together using artificial light and sunlight.

According to the present invention, the inventions according to the following [1] to [20] are provided.
[1] In plant cultivation in which a plant is irradiated with sunlight and artificial light in combination, an illumination device for plant cultivation used for irradiation of artificial light,
A first heat conductive plate material made of a plate material having heat conductivity and having front and back surfaces, and a first light emitting unit attached to the first heat conductive plate material so that the light irradiation direction faces downward. A first illuminator provided;
A second heat conductive plate made of a plate having heat conductivity and having front and back surfaces, and a second light emitting part attached to the second heat conductive plate so that the direction of light irradiation faces downward. A lighting device for plant cultivation, comprising: a second irradiator disposed so that the second thermally conductive plate member faces the first thermally conductive plate member with a space therebetween.
[2] The lighting device for plant cultivation according to [1], wherein the front and back surfaces of the first heat conductive plate material and the front and back surfaces of the second heat conductive plate material are made of a material that reflects sunlight. .
[3] The lighting device for plant cultivation according to [1] or [2], wherein each of the first heat conductive plate material and the second heat conductive plate material has a bent cross-sectional shape.
[4] The plant cultivation illumination according to any one of [1] to [3], further including an adjustment mechanism for adjusting an attachment angle of the first irradiation body and an attachment angle of the second irradiation body with respect to the plant. apparatus.
[5] The plant cultivation lighting device according to [4], wherein the adjustment mechanism adjusts the mounting angle by interlocking the first irradiation body and the second irradiation body.
[6] The plant cultivation lighting device according to any one of [1] to [5], further including a diffusion member that diffuses sunlight and irradiates the plant.
[7] The lighting device for plant cultivation according to [6], wherein the diffusing member is disposed above the first irradiator and the second irradiator.
[8] Each of the first heat conductive plate and the second heat conductive plate has a rectangular shape,
In the first irradiator, the first light emitting portion is composed of a plurality of semiconductor light emitting elements attached along the longitudinal direction below the first thermally conductive plate material,
In any one of [1] to [7], in the second irradiator, the second light-emitting portion includes a plurality of semiconductor light-emitting elements attached along the longitudinal direction below the second thermally conductive plate. A lighting device for plant cultivation.
[9] The first heat conductive plate and the second heat conductive plate each have a rectangular shape,
In the first irradiating body, the first light emitting unit is composed of a plurality of semiconductor light emitting elements attached in a movable state below the first thermally conductive plate,
In any one of [1] to [8], in the second irradiator, the second light emitting unit is configured by a plurality of semiconductor light emitting elements that are movably attached below the second thermally conductive plate. A lighting device for plant cultivation.
[10] An open state in which the first irradiation body and the second irradiation body are arranged with a space therebetween by rotating the first irradiation body and the second irradiation body in conjunction with each other, and the first irradiation body The plant cultivation apparatus according to any one of [1] to [9], further including setting means for setting a closed state in which a part of the second irradiation body and a part of the second irradiation body are arranged to overlap each other Lighting equipment.

[11] In plant cultivation in which a plant is irradiated with sunlight and artificial light in combination, an illumination device for plant cultivation used for irradiation of artificial light,
A thermally conductive plate material composed of a plate material having thermal conductivity and front and back surfaces, and a light emitting portion attached to the thermally conductive plate material so that the light irradiation direction is along the surface of the thermally conductive plate material, A plurality of irradiating bodies each provided,
An illuminating device for plant cultivation, comprising: a support unit that supports a plurality of irradiation bodies so that the light irradiation direction of the light emitting units provided on each of the plurality of irradiation bodies faces downward.
[12] The illuminating device for plant cultivation according to [11], wherein the front and back surfaces of the thermally conductive plate provided on each of the plurality of irradiating bodies are made of a material that reflects sunlight.
[13] The support unit adjusts the irradiation direction of light from the light emitting units respectively provided on the plurality of irradiation bodies by adjusting the mounting angle of the plurality of irradiation bodies [11] or [11] 12] The lighting apparatus for plant cultivation of description.
[14] The support unit rotates the plurality of irradiation bodies in conjunction with each other, so that the plurality of irradiation bodies are arranged with a space therebetween, and the plurality of irradiation bodies are arranged to overlap each other. The lighting device for plant cultivation according to any one of [11] to [13], wherein a closed state is set.
[15] The illuminating device for plant cultivation according to any one of [11] to [14], wherein the light emitting units provided in each of the plurality of irradiation bodies include a red semiconductor light emitting element that emits red light. .
[16] The illuminating device for plant cultivation according to [15], wherein the light emitting units provided in each of the plurality of irradiation bodies further include a blue semiconductor light emitting element that emits blue light.

[17] In a plant cultivation apparatus used in plant cultivation in which plants are irradiated with sunlight and artificial light in combination,
A cultivation container for accommodating the plant to be cultivated;
A first heat conductive plate material made of a plate material having heat conductivity and having front and back surfaces, and a first light emitting unit attached to the first heat conductive plate material so that the light irradiation direction faces downward. A first irradiator disposed above the cultivation container,
A second heat conductive plate made of a plate having heat conductivity and having front and back surfaces, and a second light emitting part attached to the second heat conductive plate so that the direction of light irradiation faces downward. A plant cultivation apparatus comprising a second irradiator disposed so that the second thermally conductive plate is opposed to the first thermally conductive plate with a space above the cultivation container.
[18] The plant cultivation apparatus according to [17], further including a wall that transmits sunlight, and further including a cultivation room that houses the cultivation container, the first irradiation body, and the second irradiation body.
[19] By rotating the first irradiator and the second irradiator in conjunction with each other, an open state in which the first irradiator and the second irradiator are arranged with a space therebetween, and the first irradiator The plant cultivation apparatus according to [17] or [18], further comprising setting means for setting a closed state in which a part of the second irradiation body and a part of the second irradiation body are arranged to overlap each other.
[20] Changing means for changing the size of the space through which sunlight passes between the first and second irradiation bodies by adjusting the attachment angles of the first and second irradiation bodies to the plant. The plant cultivation apparatus according to any one of [17] to [19], further including:

  ADVANTAGE OF THE INVENTION According to this invention, when cultivating a plant using artificial light and sunlight together, it can suppress that the irradiation efficiency of sunlight falls.

It is a figure which shows an example of a structure of a plant cultivation system of sunlight artificial light combined use type. It is a perspective view which shows an example of a structure of the cultivation unit in Embodiment 1. FIG. (A), (b) is a perspective view which shows an example of a structure of the 1st irradiation body in Embodiment 1. FIG. (A), (b) is a figure for demonstrating an example of a structure of a 1st irradiation body. (A)-(c) is a figure for demonstrating an example of operation | movement of the 1st irradiation body-3rd irradiation body in Embodiment 1. FIG. (A)-(c) is a figure for demonstrating the relationship between time and a season, and the position of the sun. (A) is a figure which shows the 1st arrangement | positioning which makes the x direction and north direction of a cultivation unit correspond, (b) is a figure which shows the 2nd arrangement which makes the y direction and cultivation direction of a cultivation unit correspond. is there. It is a figure which shows an example of the cultivation process of a plant in the case of employ | adopting the 1st arrangement | positioning shown to Fig.7 (a). It is a figure which shows an example of the cultivation process of a plant in the case of employ | adopting the 2nd position shown in FIG.7 (b). (A)-(c) is a figure for demonstrating the other structural example of the 1st irradiation body in Embodiment 1. FIG. It is the front view which looked at the 1st irradiation object shown in Drawing 10 (a)-(c) from the XI direction. It is a perspective view which shows an example of a structure of the cultivation unit in Embodiment 2. FIG. (A), (b) is a perspective view which shows an example of a structure of the 1st irradiation body in Embodiment 2. FIG. (A)-(d) is a figure for demonstrating an example of operation | movement of the 1st irradiation body-3rd irradiation body in Embodiment 2. FIG. (A)-(c) is a figure which shows an example of the cultivation process of a cultivated plant in the case of using the cultivation unit of Embodiment 2. FIG. It is a perspective view which shows the modification of the cultivation unit of Embodiment 2. FIG. (A), (b) is a perspective view which shows an example of the other structure of the 1st irradiation body in Embodiment 2. FIG. (A)-(d) is a figure which shows an example of the further another structure of the 1st irradiation body in Embodiment 2. FIG. It is a figure for demonstrating operation | movement of the 1st irradiation body shown in FIG.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
<Embodiment 1>
FIG. 1 is a diagram showing an example of a configuration of a plant cultivation system 1 of a combined use type with sunlight and artificial light to which the present embodiment is applied.
The plant cultivation system 1 has a function of irradiating artificial light with a cultivation room 2 having a wall portion that transmits sunlight, such as a vinyl sheet and glass, and a space inside. It has a plurality of cultivation units 3 arranged inside. Here, each cultivation unit 3 accommodates a cultivation container 5 in which a cultivation plant 4 is planted. In the cultivation room 2, temperature adjustment and humidity adjustment suitable for the cultivation conditions of the cultivated plant 4 are performed by an air conditioner or the like (not shown).

FIG. 2 is a perspective view showing an example of the configuration of the cultivation unit 3 in the first embodiment.
The cultivation unit 3 as an example of a lighting device for plant cultivation includes a frame 10 for loading the cultivation container 5 shown in FIG. 1 and a cultivation planted in the cultivation container 5 accommodated in the frame 10. An artificial light irradiation unit 20 for irradiating the plant 4 with artificial light and a support unit 30 for supporting the artificial light irradiation unit 20 on the frame 10 are provided.

  Among these, the frame 10 has, for example, a U-shaped cross section, has a rectangular shape, and rises upward from one side of the bottom 10c and the bottom 10c on which the cultivation container 5 is mounted. A first wall portion 10a and a second wall portion 10b that rises upward from one side of the bottom portion 10c and faces the first wall portion 10a are provided. Here, in the upper part of the first wall portion 10a, there are four through holes, that is, a first wall portion first hole 11a, a first wall portion second hole 12a, a first wall portion third hole 13a, and a first wall portion. Four holes 14a are provided. On the other hand, the upper portion of the second wall portion 10b also includes four through holes, that is, the second wall portion first hole 11b, the second wall portion second hole 12b, the second wall portion third hole 13b, and the second wall portion fourth. A hole 14b is provided. The first wall portion first hole 11a and the second wall portion first hole 11b face each other, the first wall portion second hole 12a and the second wall portion second hole 12b face each other, and the first wall portion. The third hole 13a and the second wall portion third hole 13b face each other, and the first wall portion fourth hole 14a and the second wall portion fourth hole 14b face each other.

  In the following description, in the cultivation unit 3, the direction along the side on which the first wall portion 10a and the second wall portion 10b are provided as viewed from the bottom portion 10c (the direction toward the upper right in the figure) is the x direction. Called. In addition, a direction along the side where the first wall portion 10a and the second wall portion 10b are not provided when viewed from the bottom portion 10c (a direction toward the upper left in the figure) is referred to as a y direction. Furthermore, the direction from the lower side to the upper side in the figure is referred to as the z direction. Therefore, in the cultivation unit 3 of the present embodiment, the artificial light irradiation unit 20 is located on the z-direction side, that is, above the bottom 10c of the frame body 10.

  The artificial light irradiation unit 20 is arranged in the z direction (upward) when viewed from the bottom 10c of the frame body 10, and is disposed between the first wall portion 10a and the second wall portion 10b. The second irradiator 22 and the third irradiator 23 are provided. The first irradiating body 21 to the third irradiating body 23 as an example of a plurality of irradiating bodies have a common configuration, and each has a function of irradiating artificial light toward the bottom 10c side as will be described later. is doing. Further, each of the first to third irradiators 21 to 23 has a rectangular plate-like structure, and is arranged such that its long side is along the x direction and its short side is along the z direction. ing. The first irradiating body 21 to the third irradiating body 23 are arranged side by side in the y direction, and the surface of the first irradiating body 21 is opposed to the inner surface side of the first wall portion 10a. The surface of the second irradiation body 22 faces the back surface of the second irradiation body 22, the surface of the third irradiation body 23 faces the back surface of the second irradiation body 22, and the back surface of the third irradiation body 23 has the second wall portion 10b. The inner surfaces are opposed to each other.

Furthermore, the support part 30 as an example of an adjustment mechanism, a setting means, or a change means is attached so that the 1st wall part 1st hole 11a provided in the frame 10 and the 2nd wall part 1st hole 11b may be penetrated. The first support 31, the second support 32 attached so as to pass through the first wall portion second hole 12a and the second wall portion second hole 12b, the first wall portion third hole 13a and the second wall portion 13a. The third support 33 attached so as to penetrate the second wall part third hole 13b, and the fourth support attached so as to penetrate the first wall part fourth hole 14a and the second wall part fourth hole 14b. And a body 34. Each of the first support body 31 to the fourth support body 34 is made of a rod-like or linear metal material or the like, and is arranged along the y direction. And these 1st support bodies 31-the 4th support body 34 are the 1st irradiation bodies 21 through the through-hole (it mentions later for details) provided in each of the 1st irradiation bodies 21-the 3rd irradiation bodies 23. -The 3rd irradiation body 23 is supported.
Further, a plurality of support portions 30 are attached to each of the first support body 31 to the fourth support body 34 (six in this example as will be described later), and the first support body 31 to the fourth support body 34. Is further provided with a regulating member 35 for regulating the postures of the first irradiating body 21 to the third irradiating body 23 supported by.

  Next, although the structure of the 1st irradiation body 21-the 3rd irradiation body 23 is demonstrated, since the 1st irradiation body 21-the 3rd irradiation body 23 have a common structure as mentioned above, here Now, the first irradiator 21 will be described as an example.

  3 and 4 show an example of the configuration of the first irradiation body 21. FIG. Among these, FIG. 3A is a perspective view when the first irradiator 21 is viewed from the front surface side (the first wall portion 10a side in FIG. 2), and FIG. It is a perspective view at the time of seeing from the back surface side (2nd irradiation body 22 side in FIG. 2). 4A is a cross-sectional view of the first irradiation body 21 taken along the line IVA-IVA in FIGS. 3A and 3B, and FIG. 4B shows the first irradiation body 21 in FIG. It is the front view seen from the IVB direction in).

  In the present embodiment, the first irradiator 21 has a light emitting unit 200 that emits light when current is supplied, and heat dissipation that is attached to the light emitting unit 200 and that releases heat generated by the light emission of the light emitting unit 200. Plate 210.

  Among these, the heat radiating plate 210 is configured by a rectangular metal plate whose long side is along the x direction and whose short side is along the z direction. Moreover, the reflective layer for reflecting sunlight is provided in the front and back of the heat sink 210 of this Embodiment. Examples of such a reflective layer include a mode in which the front and back surfaces of a metal plate are mirror-finished, and a mode in which a white resin or the like is formed on the front and back surfaces of the metal plate. In addition, when the aspect which mirror-finishes the front and back of a metal plate is employ | adopted, you may provide the protective layer which consists of transparent resin further on it. The four corners of the heat radiating plate 210 are provided with a heat radiating plate first hole 211, a heat radiating plate second hole 212, a heat radiating plate third hole 213, and a heat radiating plate fourth hole 214 that penetrate the front and back surfaces of the heat radiating plate 210. ing. Here, in the present embodiment, the heat sink first hole 211 and the heat sink third hole 213 positioned relatively upward are configured by elongated holes extending in the z direction, but are positioned relatively lower. The heat sink second hole 212 and the heat sink fourth hole 214 are formed as circular holes. And when the 1st irradiation body 21 was attached to the cultivation unit 3 (refer FIG. 2), the 1st support body 31 is in the heat sink 1st hole 211, and the 2nd support body in the heat sink 2nd hole 212. 32, the third support 33 passes through the third heat sink plate 213, and the fourth support 34 passes through the fourth heat sink hole 214. In the present embodiment, the short diameters of the heat sink first hole 211 and the heat sink third hole 213 are set larger than the outer diameters of the first support 31 and the third support 33, and the heat sink second The inner diameters of the hole 212 and the heat sink fourth hole 314 are set larger than the outer diameters of the second support body 32 and the fourth support body 34.

  The light emitting unit 200 is attached to the surface side of the heat radiating plate 210 and the end on the −z direction (downward) side along the x direction. The light emitting unit 200 includes a plurality of light emitting chips 201 arranged side by side along the x direction and wiring (not shown) formed therein, and the plurality of light emitting chips 201 are mounted on one surface. In addition, a wiring board 202 to which the heat sink 210 is attached is provided on the other surface which is the back side.

  Each light emitting chip 201 constituting the light emitting unit 200 has a so-called side view type package structure including a semiconductor light emitting element (LED), and includes a package unit 2010 made of a resin and the like, and a package unit The first LED 2011, the second LED 2012, and the third LED 2013 are attached to the 2010 side by side along the x direction. And each light emitting chip 201 is attached to the heat sink 210 via the wiring board 202 so that the first LED 2011 to the third LED 2013 provided on each light emitting chip 201 face the −z direction side. The height of the package portion 2010 is 3 mm or less, preferably 1 mm or less, and more preferably 0.6 mm or less so as not to disturb sunlight. The exterior of the package unit 2010 that receives sunlight is preferably made of a material that reflects light, and a white, highly reflective resin material is suitable. Further, it is desirable to use a lens or the like on the light extraction surface of the package unit 2010 to adjust the radiation angle suitable for plant growth. In addition, the package unit 2010 can select a structure in accordance with illumination conditions. For example, the light shielding area is slightly increased by changing the shape of the heat sink, but it is also preferable to mount an inexpensive top view type package with high luminous efficiency. When strong light is required, it is preferable to mount a so-called power package that can supply power of 1 watt or more.

Thereby, when attaching the 1st irradiation body 21 to the cultivation unit 3 (refer FIG. 2), light is directed toward the -z direction side, ie, downward, from each light emitting chip 201 provided in the 1st irradiation body 21. Emitted. Here, in the present embodiment, the first LED 2011 and the third LED 2013 emit red light having an emission wavelength of 600 to 700 nm corresponding to the absorption wavelength of chlorophyll of the plant, and particularly near 660 nm which is preferable for plant growth. The one that emits red light. The second LED 2012 emits blue light in the vicinity of 450 nm corresponding to another absorption wavelength of chlorophyll. However, the present invention is not limited to this, and all of the first LED 2011 to the third LED 2013 may be configured to emit red light around 660 nm. Moreover, you may add other colors (LED), such as green, yellow, and infrared.
As the material of the light emitting layer, for example, for red light, a light emitting element using a semiconductor crystal such as an AlGaAs type or AlGaInP type having a high luminous efficiency is preferable, and a high efficiency AlGaInP type is particularly preferable. On the other hand, for blue light, for example, an InGaN system is suitable. A semiconductor light-emitting element has an excellent environment for heat dissipation because its luminous efficiency decreases as the temperature of the element increases. Moreover, you may use what combined LED and fluorescent substance.

  Moreover, in this Embodiment, when the 1st irradiation body 21 functions as a 1st irradiation body, for example, while the heat sink 210 provided in the 1st irradiation body 21 functions as a 1st heat conductive board material, 1st The light emitting unit 200 provided in the irradiation body 21 functions as the first light emitting unit. In this case, the second irradiating body 22 or the third irradiating body 23 functions as the second irradiating body, and the heat radiating plate 210 provided on the second irradiating body 22 or the third irradiating body 23 has the second heat conduction. The light emitting part 200 provided on the second irradiation body 22 or the third irradiation body 23 functions as the second light emitting part.

  FIG. 5 is a diagram for explaining the relationship between the artificial light irradiation unit 20 and the support unit 30 in the cultivation unit 3 shown in FIG. 2. In FIG. 5, the third support 33 is hidden behind the first support 31, and the fourth support 34 is hidden behind the second support 32.

For example, in the first support 31, regulating members 35 are attached to the front and rear of the first irradiation body 21, the front and rear of the second irradiation body 22, and the front and rear of the third irradiation body 23, respectively. These restricting members 35 have an outer diameter larger than the short diameter of the holes (for example, the first holes 211 of the heat radiating plate in the first irradiation body 21) provided in each of the first irradiation body 21 to the third irradiation body 23. Each of them is fixed to the first support 31.
Further, for example, in the second support body 32, the regulating members 35 are attached to the front and rear of the first irradiation body 21, the front and rear of the second irradiation body 22, and the front and rear of the third irradiation body 23, respectively. These regulating members 35 have outer diameters larger than the inner diameters of the holes provided in each of the first irradiation body 21 to the third irradiation body 23 (for example, the heat radiation plate second hole 212 in the first irradiation body 21). Each of them is fixed to the second support 32.
Although not described in detail, the six support members 35 are also attached to the third support body 33 and the fourth support body 34, respectively.

  In the present embodiment, the second support body 32 and the fourth support body 34 are fixedly attached to the frame body 10 (see FIG. 2), whereas the first support body 31 and the third support body are attached. 33 is attached to the frame 10 so as to be slidable in the y direction and the −y direction. In addition, the first support 31 and the third support 33 are fixed by using a fixing mechanism (not shown) after changing the position in the y direction.

  By adopting such a configuration, the artificial light irradiation unit 20 (the first irradiation body 21 to the third irradiation body 23) according to the present embodiment can take the following posture. Yes.

  FIG. 5A shows a first state serving as a reference. In the first state, when the first support 31 and the third support 33 stop sliding in the y direction or the −y direction, the respective restrictions provided on the first support 31 and the third support 33 are provided. The member 35 is positioned above each regulating member 35 provided on the second support body 32 and the fourth support body 34. Accordingly, in the first state, the first irradiating body 21 to the third irradiating body 23 are in a standing state.

  FIG. 5B shows a second state in which the first support 31 and the third support 33 are slid in the y direction from the first state shown in FIG. In the second state, as the first support body 31 and the third support body 33 move in the y direction, the regulating member 35 provided on the right side of each of the first irradiation body 21 to the third irradiation body 23 in the drawing. However, it strikes the corresponding first irradiator 21 to third irradiator 23. At this time, since the second support body 32 and the fourth support body 34 are fixed as described above, in the second state, the first irradiation body 21 to the third irradiation body 23 are respectively shown in the upper left in the figure. It will be in a state inclined toward.

  Further, FIG. 5C shows a third state in which the first support 31 and the third support 33 are slid in the −y direction from the first state shown in FIG. In the third state, as the first support body 31 and the third support body 33 move in the −y direction, the regulating members provided on the left side of each of the first irradiation body 21 to the third irradiation body 23 in the drawing. 35 hits the corresponding first to third irradiation bodies 21 to 23. Since the 2nd support body 32 and the 4th support body 34 are being fixed as mentioned above at this time, in the 3rd state, the 1st irradiation body 21-the 3rd irradiation body 23 are respectively on the upper right in the figure. It will be in a state inclined toward.

And in the cultivation unit 3, with changing the inclination of the 1st irradiation body 21-the 3rd irradiation body 23 using the 1st support body 31 and the 3rd support body 33, these 1st irradiation bodies 21-3. The direction of the light emitted from the light emitting unit 200 provided in each of the irradiation bodies 23 is adjusted.
In this example, the inclined state of the first irradiator 21 to the third irradiator 23 can be changed steplessly or in multiple steps depending on the position at which the first support 31 and the third support 33 are stopped. it can. Moreover, about the position change of the 1st support body 31 in the cultivation unit 3, and the 3rd support body 33, it is good also as a structure performed manually, and it is good also as a structure performed automatically, for example using a motor etc.

Then, the behavior of the sun utilized with the plant cultivation system 1 of this Embodiment is demonstrated easily.
FIG. 6 is a diagram for explaining the relationship between time and season and the position of the sun. In the following description, the north direction is N, the south direction is S, the east direction is E, and the west direction is W. As shown in FIG. 6 (a), the sun rises from the east direction E in the morning, reaches the south direction S at noon, and then sinks to the west direction W in the afternoon. At this time, the celestial altitude (elevation angle) of the sun is maximized when going south-north at noon. And after the sun sets, the sun does not exist on the ground until the next sun rises. In the following description, a period in which the sun appears on the ground is referred to as “daytime”, and a period in which the sun does not appear on the ground is referred to as “nighttime”. “Daytime” is divided into “morning”, “daytime”, and “evening”. In addition, as shown in Fig. 6 (b), the southern middle altitude of the sun changes depending on the season and is the largest in the "summer solstice", the smallest in the "winter solstice", and the Medium size. In the following description, as shown in FIG. 6C, the south-central altitude at the spring equinox is θsp, the south-central altitude at the summer solstice is θsm, the south-central altitude at the autumn solstice is θau, and the south-central altitude at the winter solstice. Let altitude be θwi.

FIG. 7 shows an example of the relationship between the direction and the direction in which the cultivation unit 3 is arranged in the plant cultivation system 1 shown in FIG.
FIG. 7A shows a first arrangement in which the x direction of the cultivation unit 3 and the north direction N coincide with each other. On the other hand, FIG.7 (b) has shown the 2nd arrangement | positioning which makes the y direction and the north direction N of the cultivation unit 3 correspond.

  FIG. 8 is a diagram illustrating an example of the cultivation process of the cultivated plant 4 in the case where the first arrangement illustrated in FIG. 7A is employed in the plant cultivation system 1 illustrated in FIG. 1. However, in FIG. 8, the description of the cultivation room 2 is omitted. Here, FIG. 8A shows the state at “night”, FIG. 8B shows the state in “morning” of “daytime”, and FIG. FIG. 8D illustrates the state at “daytime” and the state at “evening” in “daytime”. 8A to 8D, the left side in the figure corresponds to the east direction E, the right side in the figure corresponds to the west direction W, and the front side in the figure has a north direction N (not shown). The back side in the figure corresponds to the south direction S (not shown).

  In “Night” shown in FIG. 8A, in the cultivation unit 3, the first irradiating body 21 to the third irradiating body 23 constituting the artificial light irradiating unit 20 are shown in FIG. 1 state is set. In addition, since “sunlight” cannot be expected in “nighttime”, the artificial light irradiation using the artificial light irradiation unit 20 is executed.

  In that case, in the cultivation unit 3, by supplying electric power to the light emission part 200 provided in each of the 1st irradiation body 21-the 3rd irradiation body 23, in each light emission part 200, red light is emitted from 1st LED2011 and 3rd LED2013. The second LED 2012 emits blue light. And the artificial light radiate | emitted from each light emission part 200 is irradiated to the cultivation plant 4 planted by the cultivation container 5 arrange | positioned below.

  In the first irradiating body 21 to the third irradiating body 23, the heat generated with the light emission of the first LED 2011 to the third LED 2013 attached to each of the plurality of the first irradiating body 21 to the third irradiating body 23 is transmitted to the heat radiating plate 210 through the wiring board 202. The heat transferred to the heat radiating plate 210 is released to the outside from the front and back surfaces. At this time, in the first irradiating body 21 to the third irradiating body 23, since the light emitting unit 200 is attached below the heat radiating plate 210, the heat transferred from the light emitting unit 200 to the heat radiating plate 210 is The light is emitted upward in the direction opposite to the mounting position of the light emitting unit 200. For this reason, it becomes difficult for heat to remain on the light emitting unit 200 side, and thermal degradation of the first LED 2011 to the third LED 2013 is suppressed.

  In addition, since the artificial light is irradiated to the cultivated plant 4 even at “night” when there is no sunlight, the cultivation of the cultivated plant 4 is promoted compared to the case where no artificial light is irradiated at “night”. Will be.

  In the “morning” shown in FIG. 8B, in the cultivation unit 3, the first irradiating body 21 to the third irradiating body 23 constituting the artificial light irradiating unit 20 are shown in FIG. 3 is set. In addition, in the “morning”, since sunlight can be expected, irradiation of artificial light using the artificial light irradiation unit 20 is stopped.

  In “morning”, the cultivation unit 3 is irradiated with sunlight from the east direction E side. Since the 1st irradiation body 21-the 3rd irradiation body 23 are set to the 3rd state, they are in the state which approached parallel to the irradiation direction of sunlight at this time. For this reason, sunlight is irradiated to the cultivation plant 4 in the state by which the quantity blocked | interrupted by the 1st irradiation body 21-the 3rd irradiation body 23 was reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

  In “daytime” shown in FIG. 8C, in the cultivation unit 3, the first irradiating body 21 to the third irradiating body 23 constituting the artificial light irradiating unit 20 are shown in FIG. 1 state is set. Further, since “daylight” can be expected to collect sunlight, the artificial light irradiation using the artificial light irradiation unit 20 is stopped.

  In “daytime”, the cultivation unit 3 is irradiated with sunlight from the south direction S side, but the first irradiation body 21 to the third irradiation body 23 are set to the first state. Therefore, it is in a state approaching parallel to the irradiation direction of sunlight at this time. For this reason, sunlight is irradiated to the cultivation plant 4 in the state by which the quantity blocked | interrupted by the 1st irradiation body 21-the 3rd irradiation body 23 was reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

  In the “evening” shown in FIG. 8D, in the cultivation unit 3, the first irradiating body 21 to the third irradiating body 23 constituting the artificial light irradiating unit 20 are shown in FIG. 2 is set. In addition, since “sunlight” can be expected to collect sunlight, the artificial light irradiation using the artificial light irradiation unit 20 is stopped.

  In “evening”, the cultivation unit 3 is irradiated with sunlight from the west direction W side, but the first irradiation body 21 to the third irradiation body 23 are set in the second state. Therefore, it is in a state approaching parallel to the irradiation direction of sunlight at this time. For this reason, sunlight is irradiated to the cultivation plant 4 in the state by which the quantity blocked | interrupted by the 1st irradiation body 21-the 3rd irradiation body 23 was reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

In this example, as the time of “morning” → “noon” → “evening” elapses, the postures (tilt angles) of the first irradiating body 21 to the third irradiating body 23 are changed to the third state → It is desirable to change from the first state to the second state continuously or stepwise.
Thus, in “daytime” with sunlight, the cultivated plant 4 is irradiated with sunlight, so that the energy cost is reduced as compared with the case where the cultivated plant 4 is cultivated only with artificial light. Will be. In addition, the first irradiation body 21 to the third irradiation body are adjusted by adjusting the inclination angle of the first irradiation body 21 to the third irradiation body 23 according to the incident angle of sunlight to be close to parallel to the irradiation direction of sunlight. It is possible to reduce the amount of sunlight blocked by 23 and to suppress a decrease in sunlight irradiation efficiency.

  In addition, here, in any of “daytime”, that is, “morning”, “daytime”, and “evening”, the artificial light irradiation unit 20 irradiates artificial light with the expectation that sunlight will be collected. The case of stopping is described as an example, but the present invention is not limited to this. For example, when the amount of sunlight is insufficient due to bad weather (such as cloudy or rainy weather) even during the daytime, artificial light may be emitted from the artificial light irradiation unit 20 together with sunlight. It doesn't matter. In this case, whether or not to use sunlight and artificial light together may be set manually, for example. In addition, for example, by using an optical sensor or the like, the amount of sunlight alone or the total amount of sunlight and artificial light is measured, and the total amount of light combined with sunlight and artificial light becomes a predetermined reference light amount. The amount of artificial light may be feedback controlled. On the other hand, when sunlight is too strong, each heat sink 210 is cultivated by inclining the 1st irradiation body 21-the 3rd irradiation body 23 which comprises the artificial light irradiation part 20 in the reverse direction to the description mentioned above. It can also be used as a sunlight shielding plate for the plant 4.

  FIG. 9 is a diagram illustrating an example of the cultivation process of the cultivated plant 4 in the case where the second arrangement illustrated in FIG. 7B is employed in the plant cultivation system 1 illustrated in FIG. 1. However, in FIG. 9, the description of the cultivation room 2 is omitted. Here, FIG. 9A shows the state of “Equinox” in “daytime”, FIG. 9B shows the state of “summer solstice” in “daytime”, and FIG. FIG. 9D illustrates the state in “daytime”, and FIG. 9D illustrates the state in “daytime” of “winter solstice”. 9A to 9D, the left side in the figure corresponds to the south direction S, the right side in the figure corresponds to the north direction N, and the front side in the figure corresponds to the east direction E (not shown). The back side in the figure corresponds to the west direction W (not shown). Moreover, the sun shown to Fig.9 (a)-(d) exists in the position (south middle altitude) at the time of south middle.

  In “daytime” of “spring equinox” shown in FIG. 9A, in the cultivation unit 3, the first irradiation body 21 to the third irradiation body 23 constituting the artificial light irradiation unit 20 are supported by the support unit 30 in FIG. The third state shown in c) is set. In particular, in this example, since the inclination angles of the first irradiator 21 to the third irradiator 23 are set in accordance with the south-central altitude θsp (see FIG. 6C) at “Equinox”, at this time It is in a state of approaching parallel to the sunlight irradiation direction. For this reason, the sunlight in “daytime” of “spring equinox” is irradiated to the cultivated plant 4 in a state where the amount blocked by the first irradiation body 21 to the third irradiation body 23 is reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

  In “Daytime” of “Summer Solstice” shown in FIG. 9B, in the cultivation unit 3, the first irradiation body 21 to the third irradiation body 23 constituting the artificial light irradiation unit 20 are supported by the support unit 30 in FIG. The third state shown in c) is set. In particular, in this example, since the inclination angles of the first irradiator 21 to the third irradiator 23 are set in accordance with the south-central altitude θsm (see FIG. 6C) at the “summer solstice”, at this time It is in a state of approaching parallel to the sunlight irradiation direction. For this reason, the sunlight in "daylight" of "summer solstice" is irradiated to the cultivated plant 4 in a state where the amount blocked by the first irradiation body 21 to the third irradiation body 23 is reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

  In “daytime” of “autumn” shown in FIG. 9C, in the cultivation unit 3, the first irradiation body 21 to the third irradiation body 23 constituting the artificial light irradiation section 20 are supported by the support section 30 in FIG. The third state shown in c) is set. In particular, in this example, since the inclination angles of the first irradiator 21 to the third irradiator 23 are set in accordance with the south-central altitude θau (see FIG. 6C) in “Akibun”, at this time It is in a state of approaching parallel to the sunlight irradiation direction. For this reason, the sunlight in "daytime" of "autumn" is irradiated to the cultivated plant 4 in a state where the amount blocked by the first irradiating body 21 to the third irradiating body 23 is reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

  In “daytime” of “winter solstice” shown in FIG. 9D, in the cultivation unit 3, the first irradiation body 21 to the third irradiation body 23 constituting the artificial light irradiation unit 20 are supported by the support unit 30 in FIG. The third state shown in c) is set. In particular, in this example, the inclination angles of the first irradiating body 21 to the third irradiating body 23 are set in accordance with the south-central altitude θwi (see FIG. 6C) at the “winter solstice”. It is in a state of approaching parallel to the sunlight irradiation direction. For this reason, the sunlight in "daytime" of "winter solstice" is irradiated to the cultivated plant 4 in a state where the amount blocked by the first irradiator 21 to the third irradiator 23 is reduced. Moreover, even if a part of sunlight is blocked by the first irradiating body 21 to the third irradiating body 23, a reflection layer is formed on the front and back surfaces of the first irradiating body 21 to the third irradiating body 23. Therefore, it becomes possible to finally irradiate the cultivated plant 4 with the reflected sunlight.

In this example, the first irradiators 21 to 21 in each “daytime” with the passage of the season of “spring equinox” → “summer solstice” → “autumn equinox” → “winter solstice” → the next “spring equinox”. It is desirable to change the posture (tilt angle) of the three irradiator 23 continuously or stepwise from θsp → θsm → θau → θwi → θsp.
However, by appropriately selecting the inclination angles of the first irradiating body 21 to the third irradiating body 23, in each “daytime”, the first irradiating body is “morning” → “noon” → “evening”. The tilt angle of the 21st to 3rd irradiation bodies 23 can also be fixed and used. Moreover, the inclination angles of the first irradiating body 21 to the third irradiating body 23 can be always fixed and used regardless of the season and time.

  In this example, the explanation was given by taking “daytime” as an example in “spring equinox”, “summer solstice”, “autumn equine”, and “winter solstice”, but “night” in each case is shown in FIG. 8 (a). Similarly to the example, the first irradiation body 21 to the third irradiation body 23 constituting the artificial light irradiation unit 20 are set to the first state shown in FIG. Irradiation of artificial light using 20 may be executed.

  In addition, here, no explanation was given about the presence or absence of artificial light irradiation by the first irradiating body 21 to the third irradiating body 23 in “daytime”. However, as in the above-described example, for example, in “daytime” If sunlight is expected, it is better not to irradiate. For example, even if it is “daytime”, if sunlight cannot be expected due to bad weather (cloudy weather, rainy weather, etc.) Further, artificial light may be irradiated together with sunlight. In this case, whether or not to use sunlight and artificial light together may be set manually, for example. In addition, for example, by using an optical sensor or the like, the amount of sunlight alone or the total amount of sunlight and artificial light is measured, and the total amount of light combined with sunlight and artificial light becomes a predetermined reference light amount. The amount of artificial light may be feedback controlled. On the other hand, when sunlight is too strong, each heat sink 210 is cultivated by inclining the 1st irradiation body 21-the 3rd irradiation body 23 which comprises the artificial light irradiation part 20 in the reverse direction to the description mentioned above. It can also be used as a sunlight shielding plate for the plant 4.

In the present embodiment, the first irradiation body 21 to the third irradiation body 23 are configured using the light emitting chip 201 having a so-called side view type package structure, but the present invention is not limited to this.
FIGS. 10A to 10C are diagrams for explaining another configuration example of the first irradiation body 21 (the same applies to the second irradiation body 22 and the third irradiation body 23) in the first embodiment. FIG. 11 is a front view of the first irradiation body 21 (the same applies to the second irradiation body 22 and the third irradiation body 23) shown in FIGS. 10A to 10C as seen from the XI direction.

  For example, in the example shown in FIG. 10A, the heat radiating plate 210 is bent in an L shape along the longitudinal direction, and the surface formed by the bending is directed to the −z direction. For example, in the example shown in FIG. 10B, the heat radiating plate 210 is bent in a U shape along the longitudinal direction, and the bottom surface formed by the bending is directed to the −z direction. Further, for example, in the example shown in FIG. 10C, the heat radiating plate 210 is bent in a U shape along the longitudinal direction, and the end on the z direction side is closed. In the example shown in FIGS. 10A to 10C, each of the heat sinks 210 has a heat sink first hole 211, a heat sink second hole 212, and a heat sink second, similar to those shown in FIG. Three holes 213 and a fourth heat sink hole 214 are formed.

  Moreover, in the example shown to Fig.10 (a)-(c), the light emission part 200 is attached to the surface which faces -z direction among each heat sink 210 along the x direction. As shown in FIG. 11, the light emitting unit 200 includes a plurality of light emitting chips 201 arranged side by side along the x direction, and wiring (not shown) formed therein, and a plurality of these light emitting chips 201 are formed on one surface. The light emitting chip 201 is mounted, and a wiring board 202 to which a heat radiating plate 210 is attached is provided on the other surface on the back side.

  In this example, each light emitting chip 201 constituting the light emitting unit 200 has a so-called top view type package structure including a semiconductor light emitting element (LED), and the package unit 2010 made of resin or the like. And the first LED 2011, the second LED 2012, and the third LED 2013 that are attached to the package unit 2010 along the x direction. And each light emitting chip 201 is attached to the heat sink 210 via the wiring board 202 so that the first LED 2011 to the third LED 2013 provided on each light emitting chip 201 face the −z direction side.

  Even when such a top-view light-emitting chip 201 is employed, the same effects as those described in Embodiment 1 can be obtained.

<Embodiment 2>
Although the present embodiment is substantially the same as the first embodiment, the sun light can be shielded by devising the configuration of the cultivation unit 3. In addition, in this Embodiment, about the thing similar to Embodiment 1, the same code | symbol as Embodiment 1 is attached | subjected and the detailed description is abbreviate | omitted.

FIG. 12 is a perspective view showing an example of the configuration of the cultivation unit 3 in the second embodiment.
The cultivation unit 3 of the present embodiment also has artificial light on the frame 10 for loading the cultivation container 5 shown in FIG. 1 and the cultivation plant 4 planted in the cultivation container 5 accommodated in the frame 10. The artificial light irradiating unit 20 for irradiating and the supporting unit 30 for supporting the artificial light irradiating unit 20 on the frame body 10 are provided.

  Among these, the frame 10 has, for example, a U-shaped cross section, has a rectangular shape, and rises upward from one side of the bottom 10c and the bottom 10c on which the cultivation container 5 is mounted. A first wall portion 10a and a second wall portion 10b that rises upward from one side of the bottom portion 10c and faces the first wall portion 10a are provided. Here, three through holes, that is, a first wall portion first long hole 101a, a first wall portion second long hole 102a, and a first wall portion circular hole 103a are provided in the upper portion of the first wall portion 10a. . On the other hand, three through holes, that is, a second wall portion first long hole 101b, a second wall portion second long hole 102b, and a second wall portion circular hole 103b are provided in the upper portion of the second wall portion 10b. Among these, the first wall portion first long hole 101a, the first wall portion second long hole 102a, the second wall portion first long hole 101b, and the second wall portion second long hole 102b each extend in the z direction. It has an open shape. The first wall portion first long hole 101a and the second wall portion first long hole 101b face each other, the first wall portion second long hole 102a and the second wall portion second long hole 102b face each other, The first wall circular hole 103a and the second wall circular hole 103b are opposed to each other.

  The artificial light irradiation unit 20 is arranged in the z direction (upward) when viewed from the bottom 10c of the frame body 10, and is disposed between the first wall portion 10a and the second wall portion 10b. The second irradiator 22 and the third irradiator 23 are provided. These first irradiator 21 to third irradiator 23 have a common configuration, and the mutual positional relationship is the same as in the first embodiment.

  Further, the support portion 30 includes a first support line 301 and a second support attached so as to penetrate the first wall portion first long hole 101a and the second wall portion first long hole 101b provided in the frame body 10. A wire 302, a third support wire 303 and a fourth support wire 304 attached so as to pass through the first wall portion second elongated hole 102a and the second wall portion second elongated hole 102b, and a first wall portion circular hole 103 and the 5th support line 305 attached so that it might penetrate the 2nd wall part circular hole 103b. Each of the first support line 301 to the fifth support line 305 is made of a linear metal material or the like, and is arranged along the y direction. And the 1st support line 301-the 4th support line 304 are the 5th support line 305 through the recessed part (it mentions later for details) provided in each of the 1st irradiation body 21-the 3rd irradiation body 23. Supports the first irradiation body 21 to the third irradiation body 23 through through holes (details will be described later) provided in each of the first irradiation body 21 to the third irradiation body 23. Here, in the present embodiment, the first support line 301 and the second support line 302 are coupled to each other before and after each of the first irradiation body 21 to the third irradiation body 23 via a jumper line, and The support line 303 and the fourth support line 304 are coupled via a jumper line.

  Next, although the structure of the 1st irradiation body 21-the 3rd irradiation body 23 is demonstrated, also in this Embodiment, the 1st irradiation body 21-the 3rd irradiation body 23 have a common structure. Therefore, here, the first irradiation body 21 will be described as an example.

  FIG. 13 shows an example of the configuration of the first irradiation body 21 in the cultivation unit 3 of the second embodiment. Among these, Fig.13 (a) is a perspective view at the time of seeing the 1st irradiation body 21 from the surface side (1st wall part 10a side in FIG. 12), FIG.13 (b) shows the 1st irradiation body 21. FIG. It is a perspective view at the time of seeing from the back surface side (2nd irradiation body 22 side in FIG. 12).

  In the present embodiment, the first irradiator 21 has a light emitting unit 200 that emits light when current is supplied, and heat dissipation that is attached to the light emitting unit 200 and that releases heat generated by the light emission of the light emitting unit 200. Plate 210.

Among these, the heat radiating plate 210 is configured by a rectangular metal plate whose long side is along the x direction and whose short side is along the z direction. Moreover, the reflective layer for reflecting sunlight is provided in the front and back of the heat sink 210 of this Embodiment. Further, at the four corners of the heat sink 210, the heat sink first recess 210a, the heat sink second recess 210b, the heat sink third recess 210c, and the heat sink fourth recess are formed by cutting out the upper and lower sides of the heat sink 210, respectively. 210d is formed. Furthermore, in the center of the heat radiating plate 210, a heat radiating plate circular hole 210e penetrating the front and back surfaces is provided. And when the 1st irradiation body 21 was attached to the cultivation unit 3, the 1st support line 301 was set to the heat sink 1st recessed part 210a, the 2nd support line 302 was set to the heat sink 2nd recessed part 210b, and a heat sink. The third support line 303 is positioned in the third recess 210c, the fourth support line 304 is positioned in the heat sink fourth recess 210d, and the fifth support line 305 passes through the heat sink circular hole 210e. It has become.
The configuration of the light emitting unit 200 and the attachment method to the heat sink 210 are the same as those in the first embodiment.

  FIG. 14 is a diagram for explaining the relationship between the artificial light irradiation unit 20 and the support unit 30 in the cultivation unit 3 shown in FIG. In FIG. 14, the third support line 303 is hidden behind the first support line 301, and the fourth support line 304 is hidden behind the second support line 302.

  In the present embodiment, the fifth support line 305 is fixedly attached to the frame body 10 (see FIG. 12), whereas the first support line 301 and the first support line 301 positioned above the fifth support line 305 are provided. The third support line 303 is attached to the frame body 10 so as to be slidable integrally in the y direction and the −y direction, and is located below the fifth support line 305 and the second support line 302 and the fourth support line. 304 is integrally attached to the frame 10 so as to be slidable in the y direction and the −y direction. The first support line 301 to the fourth support line 304 are fixed using a fixing mechanism (not shown) after changing the position in the y direction.

  By adopting such a configuration, the artificial light irradiation unit 20 (the first irradiation body 21 to the third irradiation body 23) according to the present embodiment can take the following posture. Yes.

  FIG. 14A shows a first state serving as a reference. In the first state, when the first support line 301 to the fourth support line 304 stop sliding in the y direction or the −y direction, the first irradiation body 21 to the third irradiation body 23 are in an upright state, respectively. Become. And in the 1st state, between the 1st irradiation body 21 and the 2nd irradiation body 22, and between the 2nd irradiation body 22 and the 3rd irradiation body 23 is open | released, The space between the first wall portion 10a of the frame body 10 (see FIG. 12) and the space between the third irradiation body 23 and the second wall portion 10b of the frame body 10 are also opened.

  14B, the first support line 301 and the third support line 303 are slid in the y direction from the first state shown in FIG. 14A, and the second support line 302 and the fourth support line A second state in which the support line 304 is slid in the -y direction is shown. In a 2nd state, the 1st irradiation body 21-the 3rd irradiation body 23 will be in the state which inclined toward the upper left in the figure, respectively. Also in the second state, the first irradiation body 21 and the second irradiation body 22, and the second irradiation body 22 and the third irradiation body 23 are open, and the first irradiation body 21. And the first wall portion 10a in the frame body 10 (see FIG. 12) and the space between the third irradiation body 23 and the second wall portion 10b in the frame body 10 are also opened.

  Further, FIG. 14C shows that the first support line 301 and the third support line 303 are moved in the −y direction from the first state shown in FIG. A third state in which the four support lines 304 are moved in the y direction is shown. In a 3rd state, the 1st irradiation body 21-the 3rd irradiation body 23 will be in the state which inclined toward the upper right in the figure, respectively. Also in the third state, the space between the first irradiating body 21 and the second irradiating body 22 and the space between the second irradiating body 22 and the third irradiating body 23 are opened. And the first wall portion 10a in the frame body 10 (see FIG. 12) and the space between the third irradiation body 23 and the second wall portion 10b in the frame body 10 are also opened.

  14D shows a state in which the first support line 301 and the third support line 303 are further slid in the y direction from the second state shown in FIG. 14B, and the second support line 302 and the second support line 302 A fourth state in which the four support lines 304 are further slid in the -y direction is shown. In a 4th state, the 1st irradiation body 21-the 3rd irradiation body 23 form the structure which overlapped in order. More specifically, in the fourth state, the upper surface side of the second irradiation body 22 overlaps the lower surface of the first irradiation body 21 and the third irradiation body 23 overlaps the lower surface of the second irradiation body 22. The upper part of the surface side overlaps. Further, in the fourth state, the upper end portion of the first irradiation body 21 abuts on the inner surface of the first wall portion 10a in the frame body 10 (see FIG. 12), and the lower end portion of the third irradiation body 23 is in the frame body 10. It strikes against the inner surface of the second wall portion 10b. Therefore, in the 4th state, between the 1st irradiation body 21 and the 2nd irradiation body 22, and the 2nd irradiation body 22 and the 3rd irradiation body 23 are closed, and also the 1st wall part in the frame 10 Between the 10a and the 1st irradiation body 21, and between the 3rd irradiation body 23 and the 2nd wall part 10b in the frame 10, it will also be closed.

  Thus, in the cultivation unit 3 of the present embodiment, in addition to the functions described in the first embodiment, the “open state” shown in FIGS. 14 (a) to 14 (c) and FIG. 14 (d). The “closed state” shown can be realized. In addition, since the light emission part 200 provided in the 1st irradiation body 21-the 3rd irradiation body 23 is attached to each surface lower side (refer Fig.13 (a)), each light emission part 200 is "closed state." "Is not an obstacle to realizing"

And in the cultivation unit 3, with changing the inclination of the 1st irradiation body 21-the 3rd irradiation body 23 using the 1st support line 301-the 4th support line 304, these 1st irradiation body 21-3rd. The direction of the light emitted from the light emitting unit 200 provided in each of the irradiation bodies 23 is adjusted.
In this example, the inclined state of the first irradiator 21 to the third irradiator 23 can be changed steplessly or in multiple steps depending on the position at which the first support line 301 to the fourth support line 304 are stopped. it can. Moreover, about the position change of the 1st support line 301-the 4th support line 304 in the cultivation unit 3, it is good also as a structure performed manually similarly to Embodiment 1, for example, using a motor etc. automatically. It does not matter as a configuration to be performed.

  Moreover, the cultivation unit 3 of this Embodiment is the sunlight with respect to the cultivation plant 4 in the procedure which employ | adopted the arrangement | positioning shown, for example to Fig.7 (a), and demonstrated using FIG. Further, for example, the arrangement shown in FIG. 7B is employed and the cultivated plant 4 is irradiated with sunlight and artificial light according to the procedure described with reference to FIG. be able to.

And in the cultivation unit 3 of this Embodiment, while sunlight can be lighted and it can irradiate to the cultivated plant 4, it can light-shield the irradiated sunlight.
FIG. 15 is a diagram illustrating an example of the cultivation process of the cultivated plant 4 in the case where the cultivation unit 3 of the second embodiment is used. Here, FIG. 15A shows the state at “night”, FIG. 15B shows the first setting for “daytime”, and FIG. 15C shows the second setting for “daytime”. Each is illustrated. Here, the first setting is applied when sunlight is collected in “daytime”. For example, in the cultivation of “long-day plants” that form flower buds when the daylength is longer than a certain time. used. In addition, the second setting is applied in the case of shading sunlight in “daytime”, for example, used in the cultivation of “short-day plants” that form flower buds when the day length is shorter than a certain time. Is done.

FIG. 16 is a perspective view showing a modification of the configuration of the cultivation unit 3 according to the present embodiment.
The basic configuration of the cultivation unit 3 is substantially the same as that shown in FIG. 12, but a diffusion plate 40 for diffusing irradiated sunlight above the frame 10, that is, above the artificial light irradiation unit 20. There is a feature in that.

  The cultivation unit 3 demonstrated in Embodiment 1 and Embodiment 2 uses the plate-shaped 1st irradiation body 21-3rd irradiation body 23 as the artificial light irradiation part 20, and these are parallel with the height of the sun. By making it incline so that it may approach, it was made easy to irradiate the cultivation plant 4 with sunlight. However, there is a concern that the irradiation of sunlight is insufficient for some of the cultivated plants 4 present in the shadowed portions of the first irradiating body 21 to the third irradiating body 23.

  On the other hand, when the configuration shown in FIG. 16 is adopted, the sunlight irradiated on the inner side of the frame body 10 through the diffusion plate 40 is diffused by the diffusion plate 40. In connection with this, since it becomes difficult to make the shadow resulting from the 1st irradiation body 21-the 3rd irradiation body 23 inside the frame 10, irradiation of the sunlight with respect to the cultivation plant 4 arrange | positioned in the frame 10 is carried out. Unevenness is less likely to occur. In addition, about the attachment position of the diffusion plate 40 with respect to the cultivation unit 3, although it does not matter as between the artificial light irradiation part 20 and the cultivated plant 4, when the loss of the artificial light by the diffusion plate 40 was considered, it showed in FIG. As described above, it is desirable that the upper part of the artificial light irradiation unit 20 be provided.

  In the first and second embodiments, the case where the artificial light irradiation unit 20 is configured by three irradiation bodies, that is, the first irradiation body 21 to the third irradiation body 23 is described as an example, but the present invention is not limited thereto. What is necessary is just what has two or more irradiation bodies instead of a thing.

Moreover, in this Embodiment, although the 1st irradiation body 21-the 3rd irradiation body 23 were comprised using the flat heat sink 210, it is not restricted to this.
FIGS. 17A and 17B are perspective views showing an example of another configuration of the first irradiation body 21 (the same applies to the second irradiation body 22 and the third irradiation body 23) in the second embodiment. Of these, FIG. 17A is a perspective view of the first irradiator 21 as viewed from the surface side (the first wall portion 10a side in FIG. 12), and FIG. It is a perspective view at the time of seeing from the back surface side (2nd irradiation body 22 side in FIG. 12).

  In the example shown in FIG. 17, the first irradiator 21 emits heat generated by light emission of the light emitting unit 200 and the light emitting unit 200 that emits light when current is supplied. And a heat sink 210. The heat radiating plate 210 in this example has a structure in which a cross section is corrugated by alternately forming concave portions and convex portions by, for example, bending processing on a rectangular metal plate. Further, the heat sink 210 has a heat sink first recess 210a, a heat sink second recess 210b, a heat sink third recess 210c, a heat sink fourth recess 210d, and a heat sink circular hole, as shown in FIG. 210e is formed.

  In this embodiment, for example, FPC (Flexible Printed Circuits) is used as the wiring board 202 constituting the light emitting unit 200, so that the wiring board 202 is formed along the unevenness on the surface side of the heat radiating plate 210. It is possible to attach. Further, in this example, the plurality of light emitting chips 201 are respectively mounted on a flat portion that becomes a peak and a flat portion that becomes a valley in the heat sink 210. By adopting such an arrangement method, there is an advantage that the positions of the plurality of light emitting chips 201 are dispersed and the irradiation light is easily uniformized. However, the present invention is not limited to this. For example, it may be mounted only on a flat portion that becomes a peak, or may be mounted only on a flat portion that becomes a valley, or may be mounted randomly.

  When the cultivation unit 3 shown in FIG. 12 is configured by arranging the first irradiation body 21 to the third irradiation body 23 having the configuration shown in FIG. Similarly to Embodiment 2, the open state and the closed state can be realized using the first irradiator 21 to the third irradiator 23. Further, by using the heat radiating plate 210 having a corrugated cross section, the surface area of the heat radiating plate 210 can be increased as compared with the configuration described in the second embodiment, and there is an advantage that the heat radiating capability is improved. . In addition to the trapezoidal shape shown in FIG. 17, the shape of the cross section of the heat sink 210 may be a curve, a semicircle, or the like, but from the viewpoint of ease of processing and ease of overlaying, A trapezoidal shape is preferable. Further, the size of the waveform can also be selected in consideration of the size of the heat radiating plate 210, the interval between two adjacent heat radiating plates 210, and the like.

Moreover, in this Embodiment, although the light emission part 200 was fixed and attached with respect to the heat sink 210, it is not restricted to this.
FIGS. 18A to 18D are diagrams showing examples of still another configuration of the first irradiation body 21 (the same applies to the second irradiation body 22 and the third irradiation body 23) in the second embodiment. Moreover, FIG. 19 is a figure for demonstrating operation | movement of the 1st irradiation body 21 (a 2nd irradiation body 22 and the 3rd irradiation body 23 are also the same) shown in FIG.

  Here, Fig.18 (a) is a front view at the time of seeing the 1st irradiation body 21 from the surface side (1st wall part 10a side in FIG. 12). FIG. 18B is a side view of FIG. 18A viewed from the XVIIIB direction. Further, FIG. 18C is an XVIIIC-XVIIIC cross-sectional view in FIG. 18A, and FIG. 18D is an XVIIID-XVIIID cross-sectional view in FIG.

  In the example shown in FIG. 18, the first irradiator 21 includes a light emitting unit 200 that emits light when current is supplied, a mounting member 220 to which the light emitting unit 200 is mounted, a mounting member 220 that is rotatably mounted, and a light emitting unit. 200 has a heat radiating plate 210 for releasing heat generated by the light emission of 200 through the mounting member 220.

  The heat radiating plate 210 of the present embodiment is configured by a rectangular metal plate whose long side is along the x direction and whose short side is along the z direction. Moreover, the reflective layer for reflecting sunlight is provided in the front and back of the heat sink 210 of this Embodiment. Further, at the four corners of the heat sink 210, the heat sink first recess 210a, the heat sink second recess 210b, the heat sink third recess 210c, and the heat sink fourth recess are formed by cutting out the upper and lower sides of the heat sink 210, respectively. 210d is formed. Furthermore, in the center of the heat radiating plate 210, a heat radiating plate circular hole 210e penetrating the front and back surfaces is provided. And when the 1st irradiation body 21 was attached to the cultivation unit 3, the 1st support line 301 was set to the heat sink 1st recessed part 210a, the 2nd support line 302 was set to the heat sink 2nd recessed part 210b, and a heat sink. The third support line 303 is positioned in the third recess 210c, the fourth support line 304 is positioned in the heat sink fourth recess 210d, and the fifth support line 305 passes through the heat sink circular hole 210e. It has become.

  The end of the heat sink 210 on the −z direction (downward) side is between the heat sink second recess 210b and the heat sink fourth recess 210d, and the heat sink second recess 210b and the heat sink fourth. Projecting portions 210f projecting in the −z direction (downward) are formed at positions adjacent to the recesses 210d. Each of these two protrusions 210f is formed with a through hole extending in the x direction.

  On the other hand, the attachment member 220 has a main body 221 having a long side along the x direction and having a trapezoidal (or triangular) cross section in the yz plane, and both axial ends of the main body 221 along the x direction. And two shafts 222 extending. Then, these two shafts 222 are inserted into through holes provided in the two projecting portions 210 f of the heat radiating plate 210, so that the mounting member 220 is rotatably supported by the heat radiating plate 210.

  Moreover, in this Embodiment, the light emission part 200 is attached to each of both surfaces which face the side in the attachment member 220. As shown in FIG. In addition, the structure of each light emission part 200 is the same as what was demonstrated in Embodiment 1, and each light emission part 200 radiate | emits light toward the -z direction (downward) side in the state shown in FIG. It is like that.

  When the cultivation unit 3 shown in FIG. 12 is configured by arranging the first irradiator 21 to the third irradiator 23 having the configuration shown in FIG. 18, the first irradiator 21 is arranged in the same manner as in the second embodiment. An open state and a closed state can be realized using the irradiation body 21 to the third irradiation body 23. Further, for example, in the open state, the first irradiating body 21 to the third irradiating body 23 are in the state shown in FIG. 19A. It will be in the state shown in That is, in the 1st irradiation body 21-the 3rd irradiation body 23, irrespective of the attachment angle of the heat sink 210, the light emission part 200 continues maintaining the state which faced the -z direction (downward) side. Therefore, it is possible to maintain an appropriate light irradiation angle with respect to the cultivated plant 4 at any attachment angle, and efficient plant cultivation with artificial light becomes possible. Further, it is also desirable to combine the configuration shown in FIG. 18 with the configuration shown in FIG.

  Now, plant cultivation systems that use both artificial light and sunlight, which are currently in practical use, have a large amount of light, such as sodium lamps and high-pressure mercury lamps, in order to minimize the effect of sunlight being blocked by lighting devices. In most cases, the light source is arranged at a high position sufficiently away from the plant. In such an illumination system, since a large area can be irradiated with one light source, it is excellent in that the area that blocks sunlight is small. However, there are many problems such as a lot of light irradiated to other than plants, low efficiency, light pollution in the surrounding area and attracting pests such as moths.

On the other hand, LED attracts attention as an artificial light source for plant cultivation. The light source using LED can selectively irradiate the wavelength required for plant growth, and since the irradiation light contains almost no infrared rays, it does not easily cause leaf burning even if it is irradiated nearby, and is highly efficient and energy-saving. In addition, it has excellent points such as long life and low light source replacement frequency.
However, since the light emission efficiency of the LED decreases as the temperature rises, the heat dissipation technology of the lighting device is important from the viewpoint of energy saving. In order to perform the proximity illumination that makes use of the characteristics of the LED rather than the conventional configuration in which the point light source is arranged at a distance, an illumination device for plant cultivation that can sufficiently radiate heat and does not shield sunlight is necessary. .

  The present invention suppresses a decrease in the irradiation efficiency of sunlight when a plant is cultivated using artificial light and sunlight in combination, and an irradiation device having high luminous efficiency excellent in heat dissipation and the sun The cultivation apparatus provided with the illuminating device which can utilize light and artificial light efficiently and flexibly can be provided.

DESCRIPTION OF SYMBOLS 1 ... Plant cultivation system, 2 ... Cultivation room, 3 ... Cultivation unit, 4 ... Cultivation container, 5 ... Cultivation plant, 10 ... Frame, 20 ... Artificial light irradiation part, 21 ... 1st irradiation body, 22 ... 2nd irradiation Body, 23 ... third irradiation body, 30 ... support section, 31 ... first support body, 32 ... second support body, 33 ... third support body, 34 ... fourth support body, 35 ... regulating member, 40 ... diffusion Plate 200, light emitting unit 201, light emitting chip, 202, wiring board, 210, heat radiating plate, 2011, first LED, 2012, second LED, 2013, third LED

Claims (20)

In plant cultivation to irradiate plants with sunlight and artificial light in combination, a plant cultivation lighting device used for irradiation of the artificial light,
A first heat conductive plate made of a plate having heat conductivity and having front and back surfaces, and a first light emitting part attached to the first heat conductive plate so that the direction of light irradiation faces downward A first irradiator comprising:
A second heat conductive plate made of a plate having heat conductivity and having front and back surfaces, and a second light emitting part attached to the second heat conductive plate so that the direction of light irradiation faces downward And a second irradiating body disposed so that the second thermally conductive plate member faces the first thermally conductive plate member with a space therebetween.   The lighting device for plant cultivation according to claim 1, wherein the front and back surfaces of the first heat conductive plate material and the front and back surfaces of the second heat conductive plate material are made of a material that reflects the sunlight. .   The lighting device for plant cultivation according to claim 1 or 2, wherein each of the first heat conductive plate material and the second heat conductive plate material has a bent cross-sectional shape.   The illumination for plant cultivation according to any one of claims 1 to 3, further comprising an adjustment mechanism for adjusting an attachment angle of the first irradiator and an attachment angle of the second irradiator with respect to the plant. apparatus.   The lighting device for plant cultivation according to claim 4, wherein the adjustment mechanism adjusts the mounting angle by interlocking the first irradiation body and the second irradiation body.   The lighting device for plant cultivation according to any one of claims 1 to 5, further comprising a diffusing member that diffuses the sunlight and irradiates the plant.   The lighting device for plant cultivation according to claim 6, wherein the diffusion member is disposed above the first irradiation body and the second irradiation body. Each of the first thermally conductive plate and the second thermally conductive plate has a rectangular shape,
In the first irradiator, the first light emitting unit is composed of a plurality of semiconductor light emitting elements attached along the longitudinal direction below the first thermally conductive plate material,
The said 2nd irradiation body WHEREIN: The said 2nd light emission part is comprised by the several semiconductor light-emitting element attached along a longitudinal direction under the said 2nd heat conductive board | plate material, The 1st thru | or 7 characterized by the above-mentioned. The lighting apparatus for plant cultivation of any one of Claims 1. Each of the first thermally conductive plate and the second thermally conductive plate has a rectangular shape,
In the first irradiator, the first light emitting unit is configured by a plurality of semiconductor light emitting elements that are movably attached below the first heat conductive plate.
The said 2nd irradiation body WHEREIN: The said 2nd light emission part is comprised under the said 2nd heat conductive board | plate material, and is comprised with the some semiconductor light-emitting element attached so that a movement is possible. The lighting apparatus for plant cultivation of any one of Claims 1.   By rotating the first irradiation body and the second irradiation body in conjunction with each other, an open state in which the first irradiation body and the second irradiation body are arranged with a space therebetween, and the first irradiation The plant according to any one of claims 1 to 9, further comprising setting means for setting a closed state in which a part of the body and a part of the second irradiation body are arranged to overlap each other. Lighting device for cultivation. In plant cultivation to irradiate plants with sunlight and artificial light in combination, a plant cultivation lighting device used for irradiation of the artificial light,
A thermally conductive plate made of a plate having thermal conductivity and having front and back surfaces, and a light emitting portion attached to the thermally conductive plate so that the direction of light irradiation is along the surface of the thermally conductive plate. A plurality of irradiation bodies each provided with,
An illuminating device for plant cultivation, comprising: a support unit that supports a plurality of the irradiation bodies such that a light irradiation direction of the light emitting units provided on the plurality of irradiation bodies is directed downward.   The lighting device for plant cultivation according to claim 11, wherein front and back surfaces of the thermally conductive plate provided on each of the plurality of irradiation bodies are made of a material that reflects the sunlight.   The said support part adjusts the irradiation direction of the light from the light emission part each provided in the said several said irradiation body by adjusting the attachment angle of the said several irradiation body, The Claim 11 or 12 characterized by the above-mentioned. The lighting apparatus for plant cultivation of description.   The support unit is configured such that a plurality of the illuminating bodies are arranged in an open state in which the plurality of illuminating bodies are spaced apart from each other by rotating the plurality of illuminating bodies in conjunction with each other. The lighting device for plant cultivation according to any one of claims 11 to 13, wherein a closed state is set.   The lighting device for plant cultivation according to any one of claims 11 to 14, wherein each of the light emitting units provided in each of the plurality of irradiation bodies includes a red semiconductor light emitting element that emits red light.   The lighting device for plant cultivation according to claim 15, wherein each of the light emitting units provided in each of the plurality of irradiation bodies further includes a blue semiconductor light emitting element that emits blue light. In plant cultivation equipment used in plant cultivation to irradiate plants with sunlight and artificial light in combination,
A cultivation container for accommodating the plant to be cultivated;
A first heat conductive plate made of a plate having heat conductivity and having front and back surfaces, and a first light emitting part attached to the first heat conductive plate so that the direction of light irradiation faces downward A first irradiator disposed above the cultivation container,
A second heat conductive plate made of a plate having heat conductivity and having front and back surfaces, and a second light emitting part attached to the second heat conductive plate so that the direction of light irradiation faces downward And a second irradiator disposed above the cultivation container so that the second heat conductive plate is opposed to the first heat conductive plate with a space therebetween.   The plant cultivation apparatus according to claim 17, further comprising a cultivation room that includes the wall that transmits the sunlight, and that accommodates the cultivation container, the first irradiation body, and the second irradiation body. .   By rotating the first irradiation body and the second irradiation body in conjunction with each other, an open state in which the first irradiation body and the second irradiation body are arranged with a space therebetween, and the first irradiation The plant cultivation apparatus according to claim 17 or 18, further comprising setting means for setting a closed state in which a part of the body and a part of the second irradiation body are arranged to overlap each other.   The size of the space through which the sunlight passes is changed between the first irradiation body and the second irradiation body by adjusting the mounting angles of the first irradiation body and the second irradiation body with respect to the plant. The plant cultivation device according to any one of claims 17 to 19, further comprising changing means.

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