JP2005027521A - Mobile light emitting diode (led) lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile LED lighting system with inexpensive maintenance fee thoroughly emitting light with the number of LED as low as possible aiming at raising of plants and control of flower bud. <P>SOLUTION: This LED lighting system is such that a rail 10 is bridged over one direction of a field 18, a moving part 4 hanging a LED lighting part 7 can move on the rail 10, and the LED lighting part 7 is made by arranging LED 8 in the cross direction of the field 18 in one row or a few rows. A motor 2 is driven under the control of a control device 1 to shuttle the moving part 4 on the rail 10 through a rope 3 and driven for some time fixed with a timer to thoroughly irradiate LED light over the whole field 18. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an LED lighting device used for growing plants such as chrysanthemums.
[0002]
[Prior art]
Conventionally, incandescent bulbs and fluorescent lamps have been used for growing plants and suppressing flower buds, but incandescent bulbs have the disadvantage of generating heat and costing electricity. In addition, there is a risk of fire due to heat generation and the terminal part is not waterproof, and there is also a problem in terms of safety. Fluorescent lamps do not generate heat or generate electricity like incandescent bulbs, but have the disadvantage of requiring maintenance and management costs due to their short lifetime.
Therefore, the larger the field where plants are cultivated, the more bulbs and fluorescent lamps will be installed, and the higher the cost for management.
Therefore, as shown in Patent Documents 1 and 2, there has been proposed an illuminating device that uses an LED light emitting element and has low power consumption and excellent durability. However, since the amount of light emitted from the LED element itself is small, a large vegetation area requires a very large number of LEDs (for example, several thousand to several tens of thousands), which is problematic in terms of cost.
[Patent Document 1] JP 2000-207933 [Patent Document 2] JP 08-103167 [Patent Document 3] JP 2002-199816 [Patent Document 4] JP 08-090884 A ]
[Problems to be solved by the invention]
The object of the present invention is to solve the above-mentioned problems, and in order to cultivate cultivated plants, to suppress flower buds, etc., a movable LED that can be irradiated evenly with a minimum number of LEDs and has a low management cost. The object is to provide a lighting device.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a movable LED lighting device according to the present invention is an LED lighting device that emits light to grow a plant, in which a number of LEDs are arranged in one direction, and is disposed above the plant. LED lighting unit, a moving mechanism that moves the LED lighting unit in a direction perpendicular to the one direction, and reciprocates from one end to the other end of the plant group, and the moving mechanism has a predetermined speed. And control means for controlling to turn back at one end and the other end of the plant group, LED control means for supplying a drive current to the LED illumination unit and controlling the light emission of the LED, the LED control means and the control Timer control means for controlling on / off of the means at a predetermined time, and the LED illumination unit according to the present invention is capable of adjusting the illumination distance to the plant. And having a height adjustment means.
Furthermore, the LED illumination unit according to the present invention is characterized in that LEDs are arranged in one or more rows.
Furthermore, the LED illumination unit according to the present invention is characterized in that one kind of red LED, blue LED, green LED or yellow LED is arranged, or two or more kinds are mixed and arranged.
In addition, the present invention attaches a contact dwarf member to the LED hanging part or the LED illumination part of the moving mechanism so as to have a predetermined height, and when the plant reaches a predetermined height, The lower end of the contact dwarf member is in contact with the tip of the plant.
[0005]
[Action]
According to the said structure, a plant can be illuminated without manben with few LED, and energy saving and cost reduction can be aimed at. It is also possible to change the illumination distance by adjusting the illumination distance, that is, the height to the plant, adjusting the illuminance according to the type and growth of the plant, or changing the LED drive current. Moreover, the growth of a plant can be promoted by combining one color or several colors of LEDs such as red, blue, green, and yellow, and flower buds can be suppressed and differentiated.
Furthermore, the plant can be grown to have the same height by the contact dwarfing member.
Here, “contact dwarfing” refers to stopping the growth by contacting only the tip of the plant. In general, it is known that when a plant is contacted, the plant feels stress and grows slowly. Using this phenomenon, a method may be used in which a tall part of a plant with irregular heights is touched with a hand or the like to stop the growth, and a short thing grows to the same height. However, it is hardly used at present because of the time-consuming work.
If an efficient LED illumination according to the present invention is used in combination with a structure in which a contact dwarf member is attached to a moving mechanism, plant growth can be controlled so that the height is the same height.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view showing a first embodiment of a movable LED lighting device according to the present invention, and FIG. 2 is a view showing a plant (flower) field.
The rail 10 is stretched in the vertical direction above the field 18 shown in FIG. Pulleys 14 and 15 are provided at both ends of the rail 10. One end of the rope 3 is wound around the output shaft of the motor 2 provided in the control device 1. The rope 3 passes through the rail 10 via the pulley 15, is stretched over the pulley 14 at the other end, passes over the outer surface of the return rail 10, and is wound around the output shaft of the motor 2 again via the pulley 15. It has become. The rope 3 is fixed to the moving part 4 constituting the moving mechanism in the middle, and the moving part 4 can move from one end of the rail 10 to the other end by transmission of the rotational driving force of the motor 2.
[0007]
A switch (1) 11 and a switch (2) 12 are installed at both ends of the rail 10, and when the moving unit 4 moves to the end of the rail 10, the button of the switch (1) 11 or the switch (2) 12 is pushed. Turn on the switch. When the switch is turned on, the moving unit 4 stops moving at that position, stops for a few seconds, starts moving in the original direction, and repeats such an operation.
One end of the LED suspension 5 is attached to the moving unit 4, and an LED control unit 6 is installed in the middle of the LED suspension 5. An LED illumination unit 7 in which a large number of LEDs 8 are arranged is suspended from the lowermost end of the LED suspension 5. The LED illuminating unit 7 has the same dimensions as the width direction of the field 18, and can move between both ends of the rail 10 to irradiate LED light to all the plants cultivated in the field 18.
[0008]
The LED illumination part 7 can adjust the distance to the plant 9 by adjusting the length of the LED hanging part 5, and can adjust the intensity of the light to irradiate. Moreover, it is also possible to change the intensity of the illuminating light by changing the drive current passed through the LED 8 by the LED control unit 6.
A support 13 is attached to the LED illumination unit 7, and a towel 19 that is a contact dwarfing member is suspended from the tip of the support 13. When the plant grows to a predetermined height, the lower end of the towel 19 comes into contact each time the tip of the plant reciprocates as the moving unit 4 moves. The support 13 and the towel 19 can be folded so as not to get in the way when not in use.
[0009]
FIG. 3 is a cross-sectional view showing details of the structure of the moving unit in FIG.
The rail 10 has a hollow inside, and the rope 3 passes through the rail 10 as described above, and the middle of the rope 3 that is turned back by the pulley 14 is fixed to the moving part frame plate 10. The moving part frame plate 10 has a substantially U-shaped cross section, and roller shafts 17a, 17b, 17c and 17d are implanted on the upper and side surfaces of the inner wall. Rollers 16a, 16b, 16c and 16d are rotatably attached to the roller shafts 17a, 17b, 17c and 17d. One end of the LED hanging portion 5 is fixed to the side surface of the moving unit frame plate 10.
Since the rollers 16 a and 16 b of the moving part frame plate 10 are in contact with the upper surface of the rail 10 and the rollers 16 c and 16 d are in contact with the side surface of the rail 10 and are rotatable, the moving part frame plate 10 is rotated by the winding operation of the rope 3. 10 can be moved.
[0010]
FIG. 4 is a circuit block diagram showing an embodiment of the control device of FIG.
The control device 1 includes a controller 21, a motor 2, a speed variable device 22, and an operation unit 23. The control device 1 and the LED control unit 24 can be turned on and off by the timer 20, and for example, the power is turned on at 10 o'clock in the evening and the power off control is performed at 3 o'clock in the morning. Therefore, the LED is illuminated only during the power-on time. The speed change of the moving unit 4 can be performed by changing the rotation speed of the motor 2 by changing the setting of the speed variable device 22 by the operation unit 23. If the rotation speed is decreased, the winding speed of the rope 3 by the motor 2 is decreased, and the moving speed of the LED illumination unit is decreased.
When an ON signal is input from the switch (1) 11 or the switch (2) 12, the controller 21 stops the motor 2, and after several seconds (for example, 10 seconds) have elapsed, the motor 2 is driven in reverse. The increase / decrease of the LED drive current (LED emission intensity change) is performed by issuing an instruction from the controller 21 to the LED control unit 24 according to the setting of the operation unit 23.
[0011]
FIG. 5 is a schematic view showing a second embodiment of the movable LED lighting device according to the present invention.
This embodiment is an example in which the control device is provided in the middle part of the LED hanging part and is self-propelled.
The rail 27 is stretched in the vertical direction of the plant 9 field, and switches (1) 25 and switches (2) 26 are provided at both ends of the rail 27, respectively. At the left end of the rail 27, a charger 29 having a contact terminal surface for charging on the side surface on the rail 27 side is installed. The moving part 28 can reciprocate between both ends of the rail 27, and the mechanism for moving on the rail 27 is substantially the same as that of the embodiment of FIG.
[0012]
One end of the LED suspension 30 is fixed to the moving unit 28, and a control device 31 is provided in the middle of the LED suspension 30. An LED illumination unit 34 in which an LED control unit 32 and LEDs 35 are arranged is suspended below the control device 31.
The driving force of the motor of the control device 31 is transmitted to the moving unit 28 by the driving shaft. When the moving unit 28 reaches the switch (1) 25 or the switch (2) 26 and is turned on, the moving unit 28 stops for a few seconds and starts moving in the opposite direction.
[0013]
FIG. 6 is a cross-sectional view showing details of the structure of the moving part of FIG.
Since it is a self-propelled type, it does not move the moving part 28 fixed to the rope, but moves it by transmitting the driving force of the motor to one of the rollers.
Roller shafts 44 a, 44 b and 44 c are implanted on the upper and left side surfaces of the inner wall of the moving part frame plate 45. Rollers 43a, 43b and 43c are rotatably attached to the roller shafts 44a, 44b and 44c. Further, a roller 43 is disposed between the right inner wall of the moving part frame plate 45 and the right outer wall of the rail 27, and the drive shaft 42 of the roller 43 is driven by a motor 36 ( (See FIG. 7). The rollers 43a and 43b of the moving part frame 45 are in contact with the upper surface of the rail 27 and the rollers 43c and 43d are in contact with the side surface of the rail 27 and can be rotated. The moving part 28 can move on the rail 27 by driving the roller 43d. It is.
On the side surface of the moving unit frame plate 45 to which the LED hanging portion 30 is fixed, a pair of charging terminals 41 for charging by contacting the contact terminal surface of the charger 29 is provided. The charging terminal 41 is urged toward the contact terminal surface by a spring (not shown) for reliable electrical connection to the contact terminal surface of the charger 29.
[0014]
FIG. 7 is a circuit block diagram showing an embodiment of the control device of FIG.
The control device 31 includes a battery 39, a controller 40, a motor 36, a speed variable device 38, and an operation unit 37. DC power is supplied from the battery 39 to the controller 40, the LED control unit 32, and the motor 36.
The time (time setting) for driving the moving unit 28 and the LED control unit 32 can be set by the operation unit 37. The set content can be the number of times of reciprocation instead of the driving time. As in the first embodiment, the speed change of the moving unit 28 and the increase / decrease of the LED driving current (LED light emission intensity change) are changed by changing the rotational speed of the motor 36 by changing the setting of the speed variable unit 38 by the operation unit 37. This is performed by issuing an instruction from the controller 40 to the LED control unit 32 according to the setting of the operation unit 37.
[0015]
When an ON signal is input from the switch (1) 25 or the switch (2) 26, the controller 40 stops the motor 36, and after a few seconds (for example, 10 seconds) have elapsed, the motor 2 is driven in reverse. The charging terminal 41 of the moving unit 28 that has reached the position of the switch (1) 25 is in contact with the power supply terminal surface of the charger 29, but before the set drive time has elapsed, as described above. The operation of stopping for a few seconds and then moving in the opposite direction is repeated. However, when the set time has elapsed, the moving unit 28 stops at that position and shifts to the charging mode, and the battery 39 is charged from the charger 29. When the charging is completed, the lighting operation can be started again.
[0016]
FIG. 8 is a diagram illustrating an example of the structure of the LED illumination unit.
The LED illuminating unit 54 suspended from the moving unit 51 by the LED hanging part 52 below the LED control unit 53 is configured so that the LEDs 55 are arranged in one or a plurality of rows at a certain interval, and light is applied to the entire width direction of the field. ing.
In the installation of the contact dwarf member in the LED lighting unit having such a configuration, a plurality of towels 47 having a certain width are suspended from the support 56, in this example, three.
[0017]
FIG. 9 is a diagram illustrating another example of the structure of the LED illumination unit.
A basket 64 is suspended under the LED control unit 63, and a large number of LED units 65 in which LEDs 66 are arranged in one or a plurality of rows at a predetermined interval are arranged so that only the plants on the basket are exposed to light. It is arranged. This arrangement is suitable when the plant wings are spaced apart.
The amount of light required varies depending on the plant. For example, chrysanthemums need only have an illuminance of about 50 lux. Other plants require 1000 lux or more and 1400 lux or more. Although it is necessary to change a light quantity according to the kind of plant or according to growth, it can carry out by adjusting the height of an LED illumination part, or changing LED drive current.
[0018]
The specific example of the magnitude | size of LED lighting apparatus and an operation example is shown below.
The current flowing through one LED is set to 20 mA, and the LED illumination unit has 240 LEDs arranged in the horizontal direction as an example, and the size thereof is 5 m. This LED illuminating unit is set over a field of 30 m × 5 m in length and width, and is set to move within a distance of 30 m in the vertical direction of the field in about 10 minutes. The driving time is, for example, from 10 o'clock at night to 3 o'clock at dawn, and reciprocation is repeated during this time.
The LED elements arranged as shown in FIG. 8 or FIG. 9 include only one of blue, yellow, green, and red, or a mixture of two or more of these LEDs.
For plant photosynthesis, red light of 600 to 700 nm and blue light of 400 to 500 nm are used. Each color has the following effects.
Blue light …… Thickening leaves, thickening stems, etc.
Yellow light …… Effective for protection.
Green light …… Promoting flowering.
Red light …… Elongation promotion, flower bud suppression.
Some types of plants have different effects even with the same light. For example, red light suppresses flowering in short-day plants. Flowering is promoted in long-day plants. In the case of chrysanthemums, red light promotes elongation and suppresses flower buds. In order to ship chrysanthemums, it is better to have a flower when it reaches a certain size. To grow in this way, it can be realized by helping the growth with a red LED and delaying the time when the flower is attached. .
[0019]
A comparison of the electricity bill when using the movable LED lighting device and the incandescent bulb according to the present invention is as follows.
For example, 20 incandescent bulbs (75w) are required per greenhouse of 6m x 30m, and 75W x 20 x 5 hours = 7500W in total. If the electricity bill of 1 kW / h is calculated at 20 yen, the electricity bill for one month is 7.5 kW × 20 yen × 30 days = 4500 yen. If the life of an incandescent light bulb is 1 year, it is 180 yen x 20 x 1 year = 3600 yen.
On the other hand, the movable LED lighting device uses 24 circuits and 240 LEDs as a set of 10 LEDs with the same field size, and the light emission power at this time is 12 W. Since the driving power of the motor or the like is 100 W, (12 W + 100 W) × 5 h = 560 W, and the electricity bill for one month is 0.56 KW × 20 yen × 30 days = 336 yen. The lifetime of the LED is tens of thousands of hours and has a durability of more than 10 years.
Therefore, the electricity bill of the movable LED lighting device according to the present invention is 336/4500 = 7/100, and the electricity bill and the consumption cost are significantly reduced.
[0020]
The preferred embodiment of the present invention has been described above, but the drive mechanism of the moving unit and the arrangement of the LED illumination units are not limited to this, and various modifications can be made. Moreover, although the contact dwarf member explained the example which used the towel, if it is a soft thing which contacts and does not damage a leaf, a bud, etc., it will not be limited to a towel, other cloth and A soft plastic member can also be used.
[0021]
【The invention's effect】
As described above, according to the present invention, it is possible to apply light of a color suitable for plant growth to a plant that is cultivated over a wide range with a small number of LEDs, and can be managed at low cost. An LED lighting device for plant lighting that can be realized can be realized.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a first embodiment of a movable LED lighting device according to the present invention.
FIG. 2 is a perspective view showing a field of plants (flowers).
3 is a cross-sectional view showing details of the structure of the moving unit in FIG. 1;
4 is a circuit block diagram showing an embodiment of the control device of FIG. 1; FIG.
FIG. 5 is a schematic view showing a second embodiment of the movable LED lighting device according to the present invention.
6 is a cross-sectional view showing details of the structure of the moving part in FIG. 5;
7 is a circuit block diagram showing an embodiment of the control device of FIG. 5. FIG.
FIG. 8 is a diagram illustrating an example of a structure of an LED illumination unit.
FIG. 9 is a diagram showing another example of the structure of the LED illumination unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,31 Control device 2,36 Motor 3 Rope 4,28 Moving part 5,30 LED hanging part 6,32 LED control part 7,34 LED illumination part 8,35 LED
9 Plant 10, 27 Rail 13, 56 Support 11, 25 Switch (1)
12, 26 switch (2)
16a to 16d, 43a to 43d Rollers 17a to 17d, 44a to 44c Roller shaft 18 Field 19, 57 Towel 20 Timer 21, 40 Controller 22 Speed variable 23, 37 Operation unit 29 Charger 38 Speed variable 39 Battery 41 Charging terminal 42 Drive shaft

Claims (5)

In an LED illumination device that emits light to grow a plant, an LED illumination unit that is arranged above a plant, in which a large number of LEDs are arranged in one direction,
A moving mechanism that moves the LED illumination unit in a direction perpendicular to the one direction, and repeatedly reciprocates from one end of the plant group to the other end;
Control means for controlling the moving mechanism to have a predetermined speed and to be folded at one end and the other end of the plant group;
LED control means for supplying a drive current to the LED illumination unit and controlling the light emission of the LED;
Timer control means for controlling on and off the LED control means and the control means at a predetermined time;
A movable LED illumination device comprising: The movable LED illumination device according to claim 1, wherein the LED illumination unit includes a height adjustment unit capable of adjusting an illumination distance with respect to a plant. The movable LED illumination device according to claim 1, wherein the LED illumination unit includes LEDs arranged in one or more rows. 4. The movable device according to claim 1, wherein the LED illumination unit is arranged with one type of red LED, blue LED, green LED, or yellow LED, or a mixture of two or more types. 5. LED lighting device. Attach the contact dwarf member to the LED hanging part or the LED illumination part of the moving mechanism so as to have a predetermined height,
The movable LED illumination according to claim 1, wherein when the plant reaches a predetermined height, the lower end of the contact dwarf member contacts the tip of the plant by the movement of the moving mechanism. apparatus.

Images