JP2005040013A - Plant cultivation device and light source unit device for plant cultivation device - Google Patents

Abstract

Provided is a plant cultivation apparatus that can finely adjust power consumption of a light source panel unit, and as a result, can easily obtain a desired photon density on a plant cultivation stage.
The light source panel includes a substantially rectangular plant cultivation stage and a light source panel unit that is arranged to face the plant cultivation stage and includes a plurality of fluorescent lamps that irradiate the plant cultivation stage. The plurality of fluorescent lamps 9 a of the unit 9 are arranged and mounted so as to be substantially orthogonal to the long side of the substantially rectangular plant cultivation stage 1.
[Selection] Figure 1

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plant cultivation device and a light source unit device used therein, and more particularly to a plant cultivation device and a light source unit device using an artificial light source such as a fluorescent lamp.
[0002]
[Prior art]
In the production of vegetables, seedlings, plant appreciation or grafting, plant cultivation means using an artificial light source are being widely adopted for the purpose of energy saving, pesticide-free, productivity improvement, space saving and the like. That is, in the natural cultivation of plants using sunlight, for example, fluctuation factors such as the amount of sunshine (for example, lack of sunshine) greatly affect the quality of grown plants, or affect the production amount.
[0003]
On the other hand, in plant cultivation using an artificial light source, the amount of sunlight and the like can be arbitrarily controlled, so that a required growth environment can be artificially created. That is, since natural fluctuation factors such as the amount of sunlight or the duration of sunlight can be greatly reduced and suppressed, it is possible not only to ensure a certain quality, but also plant cultivation in cold regions and barren regions. In addition, since it is an indoor growth technique, it can produce and supply highly safe vegetables and provide ornamental means without pesticides.
[0004]
FIG. 13 is a cross-sectional view showing a basic configuration of a conventional plant cultivation apparatus. In FIG. 13, a plurality of culture vessels 3 each containing a medium 2 are placed on a substantially rectangular plant cultivation stage 1. The plant cultivation stage 1 is provided with a light source panel (light source unit) 4 disposed opposite to the plant cultivation stage 1 to irradiate the plant cultivation stage 1 with light on the lower surface of the ceiling shelf 5. Here, the plant cultivation stage 1 generally has a depth of about 40 to 50 cm in consideration of the operability of placing and collecting the culture vessel 3, and in consideration of installation space, operability, strength, and the like. The frontage (width) is set to about 120 cm. On the other hand, the light source panel 4 is constituted by a fluorescent lamp 6 mounted on the lower surface of the ceiling shelf 5 substantially corresponding to the shape of the plant cultivation stage 1 in parallel with the long side direction.
[0005]
FIG. 14 is a perspective view showing a more specific configuration of a conventional plant cultivation apparatus. As shown in the figure, on the bottom of the ceiling shelf 5 supported horizontally by the support column 7 and the plant cultivation stage 1 that is arranged and supported in multiple stages, the required amount of light radiation, for example, the highest photosynthesis efficiency on the plant cultivation stage 1 surface is effective. In order to obtain a photon flux density distribution of 40 μmol / ms, two fluorescent lamps (40 W) 6 having a length of 120 mm and an outer diameter of 32 mm are mounted at intervals of 22.5 cm to form the light source panel 4. Here, the distance between the plant cultivation stage 1 surface and the fluorescent lamp 6 that irradiates this surface is set to at least about 30 cm in order to ensure the uniformity of the emitted light and reduce the influence of heat. In addition, although illustration is abbreviate | omitted, power supply devices, such as an inverter for driving each light source panel 4, are attached to the ceiling shelf (upper shelf board) 5 etc., for example.
[0006]
Further, a reflector is attached to the fluorescent lamp 6 in order to efficiently use the emitted light. Moreover, the culture medium 2 in the plant culture container 3 placed on the surface of the plant cultivation stage 1 is made of an agar medium containing a nutrient component, a rock wool support or the like, and can insert the root of the plant to be grown. It has a configuration. In plant growth other than culture, in order to supply required liquid fertilizer and fresh air to support the plant, for example, a configuration in which a liquid fertilizer storage tank made of synthetic resin is installed on the lower side may be employed.
[0007]
[Problems to be solved by the invention]
By the way, in order to make a profit by growing or producing vegetables, for example, it is indispensable to ensure a high cultivation density and increase the utilization efficiency of an artificial light source. In other words, in the profitability of artificial growth and production of vegetables and the like, first of all, it is premised on higher cultivation density or space saving by multi-stage installation of plant cultivation stages, thereby improving productivity. .
[0008]
On the other hand, for profitability by shortening the plant growth period or by effectively using the amount of irradiation light, the irradiation interval (the interval between the plant cultivation stage and the light source panel) can be set relatively small and uniform light irradiation can be performed. It is desired that the amount of heat generated by the light source is relatively small, and more effective use of light from an artificial light source and power saving are desired.
[0009]
However, when a fluorescent lamp with an input power of 40 W and a length of 120 cm is used as the artificial light source, it is necessary to select the number of fluorescent lamps according to the required light quantity. That is, when the amount of light is insufficient with one fluorescent lamp (40 W), two (80 W) are set, and when the amount of light is insufficient with two (80 W), the number is set to three (120 W). The selection of the number of fluorescent lamps to be set and mounted is difficult to adjust the light amount every minute, and there is a risk of lighting the fluorescent lamp with more power than necessary, which raises a problem in terms of power saving.
[0010]
In addition, when the input of the light source (fluorescent lamp) is increased and the amount of radiated light as a whole for each plant cultivation stage is secured, structural simplification can be achieved, but the variation of the photon flux density distribution on the plant cultivation stage surface is reduced. appear. That is, since the arrangement of the light sources tends to be localized, it is difficult to ensure the uniformity of the temperature of the plant cultivation stage surface and the amount of irradiation light, resulting in a decrease in plant cultivation quality or productivity.
[0011]
As described above, in the case of a conventional artificial plant cultivation device, power is easily wasted, and there is a cost problem in terms of energy saving. Furthermore, in order to reduce the influence of the heat rays emitted from the fluorescent lamp or to secure a uniform light irradiation area, the distance from the plant cultivation stage will be set relatively large, and the plant cultivation apparatus will have a higher cultivation density or space saving. Is inhibited. In contrast to the case where the light source is a hot cathode fluorescent lamp, the cold cathode fluorescent lamp has advantages such as a small tube diameter, a long lamp life, and a cold cathode, which simplifies the lighting circuit.
[0012]
The present invention has been made in response to such circumstances, and can finely adjust the power consumption of the light source panel unit, and as a result, a plant cultivation apparatus that can easily obtain a desired photon density on the plant cultivation stage. The purpose is to provide.
[0013]
[Means for Solving the Problems]
The plant cultivation apparatus of the present invention includes a substantially rectangular plant cultivation stage, and a light source panel unit that is arranged opposite to the plant cultivation stage and includes a plurality of fluorescent lamps that irradiate the plant cultivation stage. The plurality of fluorescent lamps of the unit are arranged so as to be substantially orthogonal to the long side of the substantially rectangular plant cultivation stage.
[0014]
In the plant cultivation apparatus of the present invention, the fluorescent lamp of the light source panel unit is a cold cathode fluorescent lamp.
[0015]
Furthermore, in the plant cultivation apparatus of the present invention, the fluorescent lamp of the light source panel unit has an outer diameter of 6 mm or less.
[0016]
Furthermore, in the plant cultivation apparatus of the present invention, the fluorescent lamp of the light source panel unit includes a reflector that reflects radiated light to the plant cultivation stage side.
[0017]
Furthermore, in the plant cultivation apparatus of the present invention, the reflector has a parabolic, semicircular or trapezoidal reflecting surface, and the opening width of the opening is 10 cm or less. To do.
[0018]
The light source unit device for plant cultivation according to the present invention includes a light source panel unit including a substantially rectangular plant cultivation stage, a plurality of fluorescent lamps arranged opposite to the plant cultivation stage and irradiating the plant cultivation stage, and the light source. And a plurality of fluorescent lamps of the light source panel unit are arranged so as to be substantially orthogonal to the long sides of the substantially rectangular plant cultivation stage. It is characterized by that.
[0019]
In the light source unit device for plant cultivation of the present invention, the fluorescent lamp of the light source panel unit is a cold cathode fluorescent lamp.
[0020]
Furthermore, in the light source unit device for plant cultivation of the present invention, the fluorescent lamp of the light source panel has an outer diameter of 6 mm or less.
[0021]
Furthermore, in the light source unit device for plant cultivation of the present invention, the fluorescent lamp of the light source panel includes a reflector that reflects emitted light to the plant cultivation stage side.
[0022]
Furthermore, in the light source unit device for plant cultivation of the present invention, the reflector has a parabolic, semicircular or trapezoidal reflecting surface, and the opening width of the opening is 10 cm or less. It is characterized by.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0024]
FIG. 1 is a perspective view showing a schematic configuration of a plant cultivation apparatus according to an embodiment of the present invention. That is, in this plant cultivation apparatus, the four rectangular plant cultivation stages 1 and the upper shelf board 5 are supported by the four columns 7. These four stages of plant cultivation stage 1 and upper shelf board 5 form four space portions 8 having a frontage of 120 cm, a depth of 45 cm, and a height of 40 cm. A light source panel unit 9 is mounted on the lower surface of the upper shelf board 5 and the plant cultivation stage 1, respectively. Although not shown in the light source panel unit 9, a power supply device including an inverter that supplies power to each light source panel unit 9 is disposed on the upper surface of the upper shelf plate 5.
[0025]
Here, the light source panel unit 9 includes a plurality of fluorescent lamps 9a as light sources. These fluorescent lamps 9a are, for example, hot cathode fluorescent lamps with an input of 15 W and a length of 45 cm, and each light source panel unit 9 is provided with five hot cathode fluorescent lamps at intervals of 24 cm. These hot cathode fluorescent lamps are arranged in parallel in a direction substantially orthogonal to the long sides of the substantially rectangular upper shelf board 5 and the four plant cultivation stages 1.
[0026]
In the light source panel unit 9 of the above embodiment, the mounting interval of the hot cathode fluorescent lamps 9a is changed from 24 cm to 20 cm, and the number of mounting is increased from 5 to 6 so that all the light source panel units 9 can be installed. When the power consumption is 90 W, 45 μmol / ms is obtained as the maximum photon flux density on the plant cultivation stage 1.
[0027]
Further, as the fluorescent lamp 9a constituting the light source of the light source panel unit 9, a cold cathode fluorescent lamp can be used instead of the hot cathode fluorescent lamp. In this case, each fluorescent lamp is provided with a reflector so that light from the lamp can be efficiently irradiated onto the plant cultivation stage 1.
[0028]
2A and 2B are diagrams showing a configuration of a main part of the light source panel unit 9 using a cold cathode type fluorescent lamp. FIG. 2A is a side view, and FIG. 2B is a straight line AA in FIG. It is sectional drawing along '. The light source panel unit 9 includes a pair of resin holders 9e, a parabolic reflector 9d supported at both ends by the resin holders 9e, and a fluorescent light having a central axis aligned and mounted at the focal point of the reflector 9d. It consists of a lamp 9a.
[0029]
3A and 3B are diagrams showing the configuration of the main part of the light source panel unit 9. FIG. 3A is a perspective view of the main part of the light source panel unit 9, and FIGS. 3B and 3C are sectional views of the main part. As shown in FIG. 2A, the light source panel 9 is provided with an aluminum frame 9b having the same size as that of the upper shelf board 5 or the plant cultivation stage 1. The cross sections of these aluminum frames 9b are bent in an L shape as shown in FIG. 5B, and fitting grooves 9c are formed at one of the opposing long sides at a predetermined interval. Yes. In the fitting groove 9c, a resin holder 9e provided at one end of the fluorescent lamp 9a is fitted and fixed. The resin holder 9e provided at the other end of the fluorescent lamp 9a is fixed to the other opposite long side of the aluminum frame 9b with a screw 9f, as shown in FIG.
[0030]
In FIG. 3 (c), fitting grooves 9c similar to those shown in FIG. 3 (b) are formed on any of the opposing long sides of the aluminum frame 9b. These fitting grooves The resin holders 9e at both ends of the fluorescent lamp 9a are fitted and fixed to 9c.
[0031]
FIG. 4 is a perspective view of a main part showing the arrangement of the light source panel unit 9 and a plurality of culture containers 3 on the plant cultivation stage 1 of the plant cultivation apparatus according to the embodiment of the present invention. In the figure, the same reference numerals are given to the components corresponding to the components shown in FIGS. 1 to 3, and the detailed description thereof will be omitted.
[0032]
According to the plant cultivation apparatus according to the embodiment of the present invention configured as described above, as described above, a hot cathode fluorescent lamp is used as the fluorescent lamp 9a constituting the light source of the light source panel unit 9, and is 24 cm. With the five hot cathode fluorescent lamps at intervals, when the total power consumption is 75 W, the maximum photon density on the plant cultivation stage 1 is 37 μmol / ms.
[0033]
Further, in the light source panel unit 9 of the above embodiment, the mounting interval of the hot cathode fluorescent lamps 9a is changed from 24 cm to 20 cm and the number of mounting is increased from 5 to 6 so that all the light source panel units 9 can be installed. When the power consumption is 90 W, 45 μmol / ms is obtained as the maximum photon flux density on the plant cultivation stage 1.
[0034]
When a cold cathode fluorescent lamp is used instead of a hot cathode fluorescent lamp as the fluorescent lamp 9a constituting the light source of the light source panel unit 9, for example, the input is 6.5 W, the length is 45 cm, the outer When eight fluorescent lamps with a diameter of 3 mm are mounted at an interval of 15 cm, the total power consumption is 52 W per unit, and the maximum photon flux density on the plant cultivation stage 1 is 40 μmol / ms.
[0035]
In the case of the cold cathode fluorescent lamp 9a, the power that can be input per lamp is smaller than that of the hot cathode fluorescent lamp, and the amount of radiation per lamp is also reduced. In order to obtain the same amount of light, the number must be increased. However, when the input power of the cold cathode fluorescent lamp 9a is small, the calorific value is also small and the influence of heat on the cultivated plant is small, so that the light source can be irradiated in the proximity. That is, the maximum photon flux density distribution by the light source panel unit 9 is inversely proportional to the square of the distance to the fluorescent lamp 9a that is the light source, so that the input power can be kept low.
[0036]
Further, when the cold cathode fluorescent lamp 9a is used, the lamp tube diameter can be reduced to 3 mm with respect to the outer diameter of 32 mm of the conventional hot cathode fluorescent lamp, so the height occupied in the light source portion is reduced from 10 cm to 5 cm. it can. As a result, the interval between the plurality of plant cultivation stages 1 can be reduced, and the number of stages can be set to 7 stages as shown in FIG. In the figure, components corresponding to those shown in FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0037]
According to the embodiment of the present invention described above, the plurality of fluorescent lamps which are light sources constituting the light source panel unit 9 are substantially orthogonal to the long sides of the substantially rectangular ceiling shelf 5 or the plant cultivation stage 1. Are arranged in parallel with each other, so that the power consumption input to the light source panel unit 9 can be adjusted in small increments. Therefore, a plant cultivation apparatus that can easily supply desired photons on the plant cultivation stage 1 Is obtained. That is, in the light source panel unit 9 of the present invention configured as described above, the plurality of fluorescent lamps serving as the light sources are the long sides of the ceiling shelf 5 or the plant cultivation stage 1 as in the conventional light source panel unit 9. As compared with the case where the fluorescent lamps are arranged substantially in parallel, the length of each fluorescent lamp is short and the power consumption thereof is also small. For this reason, the power consumption of the light source panel unit 9 can be finely adjusted by adjusting the mounting interval and the number of fluorescent lamps. As a result, a desired photon flux density can be easily obtained on the plant cultivation stage 1.
[0038]
FIG. 6 is a graph showing the relationship between the number of fluorescent lamps used in the light source panel unit 9 and power consumption. In the figure, the horizontal axis indicates the number of fluorescent lamps, and the vertical axis indicates power consumption (W). In the figure, straight lines A and B show the relationship between the number of fluorescent lamps used and the power consumption in the embodiment of the present invention using cold cathode fluorescent lamps and hot cathode fluorescent lamps as fluorescent lamps, respectively. Yes. A straight line C is a graph showing the relationship between the number of fluorescent lamps used and power consumption in a conventional light source panel unit using a hot cathode fluorescent lamp. From the figure, it is clear that in the light source panel unit 9 of the present invention, the power consumption of the light source panel unit 9 can be finely adjusted by adjusting the mounting interval and the number of fluorescent lamps as compared with the conventional light source panel. is there.
[0039]
FIG. 7 is a perspective view showing a main part of another embodiment of the light source panel unit 9 shown in FIG. In the configuration of the mounting portion of the cold cathode fluorescent lamp 9a to the aluminum frame 9b shown in FIG. 3, the position in the longitudinal direction of the aluminum frame 9b of the cold cathode fluorescent lamp 9a is fixed. In the embodiment, the mounting position can be changed. That is, as shown in FIG. 6A, a plurality of pairs of guide blocks 9h are attached to the L-shaped portion of one of the opposing long sides of the aluminum frame 9b so as to be movable along the frame at a predetermined interval. It has been. Each pair of guide blocks 9h is disposed adjacent to each other with a predetermined gap, and the holder 9e portion of the fluorescent lamp 9a is fitted into these gaps, whereby the fluorescent lamp 9a is mounted on the aluminum frame 9b. FIG. 2B is a cross-sectional view along the axial direction of the fluorescent lamp 9a showing the mounted state. As shown in the figure, the holder 9e provided at the other end of the fluorescent lamp 9a is fixed to the aluminum frame 9b with screws 9g.
[0040]
In addition, the figure (c) is a figure which shows the Example by which several pairs of guide blocks 9h similar to the figure (b) were provided so that a movement was possible also in the other long side part which the aluminum frame 9b opposes, It is sectional drawing along the axial direction of the fluorescent lamp 9a.
[0041]
FIG. 8 shows the implementation of the light source panel unit 9 when the plant cultivation apparatus is enlarged, that is, when the length of the fluorescent lamp 9a is increased with the increase in the size of the plant cultivation stage 1 and the light source panel unit 9. It is a perspective view which shows an example. As shown in the drawing, there is provided a lamp unit connecting plate 9i for connecting the substantially central portions of the opposing short sides of the rectangular aluminum frame 9b. A fluorescent lamp holder 9e is fixed to the lamp unit connecting plate 9i with a clip 9j. FIG. 9 is a perspective view of a principal part showing another embodiment in which the holder 9e is fixed to the lamp unit connecting plate 9i with a bolt 9k with a circular knob instead of fixing with the clip 9j in FIG.
[0042]
FIG. 10 is a plan view showing another embodiment of the light source panel unit 9 used in the plant cultivation apparatus of the present invention. In this embodiment, the fluorescent lamp 9a is attached to the opposing long sides of the aluminum frame 9b by screws 9f on both opposing long sides of the aluminum frame 9b. This fixing means is the same as the means shown in FIG. In the figure, the same reference numerals are given to the components corresponding to the components shown in FIGS. 1 to 3, and detailed description thereof will be omitted.
[0043]
11A and 11B are main part configuration diagrams showing another embodiment of the light source panel unit 9 using the cold cathode type fluorescent lamp of the present invention. FIG. 11A is a side view, and FIG. It is sectional drawing along line AA 'of a). The light source panel unit 9 includes a pair of resin holders 9e, a metal parabolic reflector 9d ′ supported at both ends by the resin holders 9e, and a central axis at the focal point of the reflector 9d ′. The fluorescent lamps 9a are arranged and mounted. Here, each of the pair of resin holders 9e is fixed to the aluminum frame 9b by a metal screw 9f '. At this time, the metal reflector 9d' is also attached to the resin holder 9e by the metal screw 9f '. Fixed. With such a configuration, the metal reflector 9d ′ is electrically connected to the aluminum frame 9b via the metal screw 9f ′. Although not shown, the fluorescent lamp 9a is lit by being supplied with a high-frequency high-frequency voltage from an inverter. For this reason, charges are stored in the metallic reflector 9d ′ during the operation of the fluorescent lamp 9a. This stored charge is high voltage and may cause an electric shock to the person, so it must be released to ground. In the embodiment of the present invention, since the aluminum frame 9b is connected to the ground, the electric charge stored in the metal reflector 9d ′ flows to the ground through the metal screw 9f ′ and the aluminum frame 9b. Electric shock can be prevented.
[0044]
FIG. 12 is a perspective view of a principal part showing another embodiment of the plant cultivation apparatus of the present invention. In this embodiment, the plant cultivation stage 1 with the light source panel unit 9 mounted on the lower surface is detachably provided on a slide mechanism 10 fixed between the support columns 7 on the side surface of the plant cultivation apparatus. In the figure, components corresponding to those shown in FIG. 1 or 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0045]
FIG. 13 is a cross-sectional view showing another embodiment of the reflector 9e used in the fluorescent lamp 9a of the light source panel unit 9 shown in FIG. In this embodiment, the reflector 9e is another reflector type reflector having a slit 9l formed in a part thereof. The slit 9l forms an air flow path in the internal space of the plant cultivation apparatus, and can reduce or avoid the thermal influence on the cultured plant.
[0046]
Further, in the above configuration, although not shown, the inverter device of each light source panel 9 is integrally disposed on the upper surface of the upper shelf board 5. Moreover, the wall body of the both sides | surfaces and back surface of a plant cultivation apparatus may be formed with a transparent acrylic resin board etc. as needed, and the front surface may be open | released for work. Moreover, the front surface of the plant cultivation apparatus can also be configured by a door that can be opened and closed by a similar transparent acrylic resin plate or the like.
[0047]
The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the invention. For example, the material of the translucent material forming the wall, the selection of the light wavelength of the light source, the number of stages of the plant cultivation stage, the omission / combination of the liquid fertilizer storage tank, etc. be able to. In other words, it is possible to form an environment similar to promotion of photosynthesis and growth by natural light, and it is also possible to form an appropriate plant form such as plant height and leaf shape and dimensions.
[0048]
【The invention's effect】
According to the plant cultivation apparatus and the light source panel unit of the present invention, the power consumption of the light source panel unit can be finely adjusted, and as a result, a desired photon density can be easily obtained on the plant cultivation stage.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a plant cultivation apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view showing a main configuration of a light source panel used in the embodiment of FIG.
3A and 3B are diagrams showing a configuration of a main part of a light source panel unit 9 used in the embodiment of FIG. 1, wherein FIG. 3A is a perspective view of the main part, and FIG. 3B and FIG.
4 is a perspective view showing a usage mode of the plant cultivation apparatus according to the embodiment of FIG. 1; FIG.
FIG. 5 is a perspective view showing another embodiment of the plant cultivation apparatus of the present invention.
FIG. 6 is a graph showing the relationship between the number of fluorescent lamps used in the light source panel unit and the power consumption in the plant cultivation apparatus of the present invention in comparison with the conventional example.
FIGS. 7A and 7B are diagrams showing another embodiment of the light source panel unit in the plant cultivation apparatus according to the present invention, in which FIG. 7A is a perspective view of main parts, and FIGS.
FIG. 8 is a perspective view showing another embodiment of the light source panel unit in the plant cultivation apparatus of the present invention.
9 is a perspective view showing a configuration of a main part of the light source panel unit shown in FIG.
FIG. 10 is a plan view showing another embodiment of the light source panel unit in the plant cultivation apparatus of the present invention.
11A and 11B are main part configuration diagrams showing another embodiment of the light source panel unit 9 using the cold cathode type fluorescent lamp of the present invention, in which FIG. 11A is a side view and FIG. It is sectional drawing along line AA 'of (a).
FIG. 12 is a perspective view showing a main part of another embodiment of the light source panel unit mounting mechanism in the plant cultivation apparatus of the present invention.
FIG. 13 is a cross-sectional view of a main part showing another embodiment of the light source panel in the plant cultivation apparatus of the present invention.
FIG. 14 is a sectional view showing a schematic configuration of a conventional plant cultivation apparatus.
FIG. 15 is a perspective view showing a configuration of a conventional plant cultivation apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Plant cultivation stage 2 ... Medium 3 ... Culture container 4 ... Light source panel unit 5 ... Ceiling board (upper shelf board)
6a …… Fluorescent lamp (light source)
7 …… Still 8 …… Space portion 9 …… Light source panel unit 9b …… Frame 9c …… Fitting and fixing portion 9d …… Reflector 9e …… Holder 9f …… Screw 9g …… Screw 9h …… Guide block

Claims (10)

A substantially rectangular plant cultivation stage, and a light source panel unit that is arranged opposite to the plant cultivation stage and includes a plurality of fluorescent lamps that irradiate the plant cultivation stage, and the plurality of fluorescent lamps of the light source panel unit Is arranged so as to be substantially orthogonal to the long side of the substantially rectangular plant cultivation stage. 2. The plant cultivation apparatus according to claim 1, wherein the fluorescent lamp of the light source panel is a cold cathode fluorescent lamp. The plant cultivation apparatus according to claim 2, wherein the fluorescent lamp of the light source panel has an outer diameter of 6 mm or less. 3. The plant cultivation apparatus according to claim 2, wherein the fluorescent lamp of the light source panel includes a reflector that reflects the emitted light toward the plant cultivation stage. The plant cultivation apparatus according to claim 4, wherein the reflector has a parabolic, semicircular or trapezoidal reflecting surface, and an opening width of the opening is 10 cm or less. A light source panel unit having a substantially rectangular plant cultivation stage, a plurality of fluorescent lamps arranged opposite to the plant cultivation stage and irradiating the plant cultivation stage, and a drive power supply device for supplying drive power to the light source panel unit And the plurality of fluorescent lamps of the light source panel unit are arranged so as to be substantially orthogonal to the long sides of the substantially rectangular plant cultivation stage. apparatus. The light source unit device for a plant cultivation apparatus according to claim 6, wherein the fluorescent lamp of the light source panel unit is a cold cathode fluorescent lamp. The light source unit device for a plant cultivation device according to claim 7, wherein the fluorescent lamp of the light source panel has an outer diameter of 6 mm or less. The light source unit device for a plant cultivation apparatus according to claim 7, wherein the fluorescent lamp of the light source panel includes a reflector that reflects emitted light to the plant cultivation stage side. The light source for a plant cultivation device according to claim 9, wherein the reflector has a parabolic, semicircular or trapezoidal reflecting surface, and an opening width of the opening is 10 cm or less. Unit device.

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