JP3158290U - Plant breeding appreciation device - Google Patents

Abstract

To provide a plant growth appreciation device that can promote healthy growth without a bias of plants with a small number of artificial lights. A cylindrical outer cover 11 having translucency, a base portion 20 provided at a lower end opening portion thereof, and an upper cap portion provided at an upper end opening portion of the outer cover portion, are surrounded by these. A plant 13 and a culture medium are set in the internal space 12. An LED light source 34 is attached to the upper cap portion and irradiates the plant 13. Further, the wavelength selective reflection film 40 is provided on the outer surface of the outer cover 11 in a striped pattern. Thereby, the light from the LED light source was irradiated from almost all directions of the plant so that the light energy was distributed almost uniformly throughout the plant. [Selection] Figure 2

Description

  The present invention relates to a plant-growing lighting device for promoting plant growth, and more specifically, for plant growth and plant growth in which tissue culture and plant growth are performed with artificial light irradiated through a light guide. The present invention relates to an ornamental lighting device.

  As a plant growing apparatus using an artificial light source, a device that takes into consideration the wavelength and light distribution of a light source for plant growth has been proposed. For example, in the device disclosed in Patent Document 1, columnar light guides made of a transparent member are arranged in a substantially circular shape at a predetermined interval, and both ends of the light guide are fixed to a support. Then, one support body is provided with a light diffusing plate at the center of the surface facing the other support body, and a plurality of LEDs are soldered to a printed circuit board on which a wiring pattern is formed with a metal conductor. The mounting substrate is attached so that the emitted light of the LED is directed to the light guide and the light diffusion plate.

  By using an LED (light emitting diode) as a light source, it is possible to grow a plant efficiently by selecting an LED having an emission wavelength that does not emit heat rays or infrared rays harmful to the plant. However, since the LED is provided only on one end side of the cylindrical light guide, the irradiation light from the LED does not reach the entire plant inside, reducing the irradiation efficiency to the plant. There was a drawback.

  As a measure for improving the above-mentioned drawbacks, it is conceivable to use many LEDs. The LED is not provided only on one end side of the cylindrical light guide, but is provided on both end sides, so that it can irradiate both sides of the leaf of the plant. Is possible.

  However, providing LEDs on both ends of one of the cylindrical light guides increases the number of LEDs used, increases the size, and increases power consumption. Furthermore, heat is also generated from the LED, and depending on the type of plant, a new problem of exceeding the temperature range suitable for growth and becoming a high temperature region may occur.

JP 2005-176690 A

  The problem to be solved is that light cannot be irradiated from the top of the plant to the root with a small number of LEDs.

  The main feature of the present invention is that a wavelength selective reflection film that reflects light in a specific wavelength range of visible light is disposed on a cylindrical outer cover so that light can be irradiated to the root of the plant. And

  The plant growth appreciation device of the present invention is advantageous in that the wavelength selective reflection film is disposed on the outer cover, so that the irradiation light of the LEDs from the top of the plant to the roots can be scattered regardless of the small number of LEDs. There is.

It is a schematic perspective view which shows the structure of embodiment of the plant growth appreciation apparatus by this invention. It is a schematic longitudinal cross-sectional view of the plant growing apparatus of FIG. It is an assembly perspective view which shows roughly the assembly procedure of the plant growing apparatus of FIG. It is a top view which shows roughly the range of the wavelength selection reflection film provided in the outer cover of FIG. It is sectional drawing which shows schematically the optical path in the lighting state of the plant growing apparatus of FIG. It is a figure which shows the spectrum distribution characteristic of white LED used for this invention. It is a figure which shows the spectrum distribution characteristic of the blue-green LED used for this invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. As long as there is no description of the effect, it is not restricted to these aspects.

1 to 3 show a configuration of a first embodiment of a plant breeding appreciation device according to the present invention.
1 is an overall perspective view, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is an assembled perspective view.

  The plant breeding appreciation device 10 is an appreciation plant growing instrument with an LED light source built therein, and includes a hollow outer cover 11 made of a light-transmitting material and a lower end of the outer cover 11 below the outer cover 11. The base part 20 to be fixed and the upper cap part 30 that covers the upper end of the outer cover 11 above the outer cover 11 are fixed. The plant is arranged inside the hollow outer cover 11.

As shown in FIGS. 2 and 3, the upper cap portion 30 is composed of a cylindrical housing 31 and a cap-shaped cover 32, and a printed circuit board 33 on which an LED light source 34 is mounted is located on the inner bottom portion of the cover 32. It is fixed and the upper cap part 30 comprises an LED light source unit. An outer cover fitting portion is provided below the housing 31 and is configured to be fitted to the upper end portion 11 a of the outer cover 11. The housing 31 is integrated with the outer cover 11 by bonding or welding. The housing 31 is made of the same material as the outer cover, in this embodiment, acrylic resin, in order to improve the adhesive force or welding force between them.
The cover 32 is integrated with the housing 31 with a hook structure as shown in FIG. Therefore, it is preferable to mold with a resin material having elasticity such as ABS resin.

  An LED light source 34 is provided on one surface side of the printed circuit board 33, and a switch 35 and a power supply socket 37 are provided on the opposite side. The switch 35 turns the LED light source 34 on and off. Reference numeral 36 denotes a switch knob, which is attached to the cover 32 so as to be movable in the vertical direction so that the switch 35 can be pushed down.

  The LED light source 34 uses two types, a white LED 34 a provided on or near the central axis of the plant growing appreciation device 10, and a blue-green LED provided from the outer cover 11 by the white LED 34 a. The white LED 34a includes a blue LED chip and a phosphor that radiates yellow light by performing wavelength conversion using irradiation light from the blue LED chip, and the irradiation light from the blue LED chip as shown in the spectral distribution characteristics shown in FIG. White color is indicated by the combined light from the phosphor. The blue-green LED 34b includes an LED chip that emits blue-green light, and has a spectral distribution characteristic shown in FIG.

  In this embodiment, it is composed of one white LED 34a and three blue-green LEDs 34b, and as shown in FIG. 2, the blue-green LED 34b has a height protruding to the plant side below the white LED 34a. Yes. By providing the blue-green LED 34b from the plant rather than the white LED 34a, it is possible to improve the color mixing when both the white LED 34a and the blue-green LED 34b are lit, and feel the color difference when viewing the plant growth appreciation device 10. It can be made difficult. Further, by providing the blue-green LED 34 around the white LED 34a, light can easily reach the root of the plant 13 by re-reflection of the plant and the wavelength selective reflection film 40 described later.

  The outer cover 11 is made of, for example, acrylic resin, and is formed in a hollow cylindrical shape with the upper and lower ends open.

  The base portion 20 includes a cylindrical retainer 21 fitted to the outer cover 11, a bottom housing 22 having an opening 23 smaller than the retainer 21, and a base cap 24 covering the opening 23. Reference numeral 22a denotes a power supply terminal portion.

  The retainer 21 is bonded or welded to the outer cover 11 on one surface side, and is fitted to the bottom housing 22 on the other surface side. The base cap 24 is detachably attached to the bottom housing 22 with, for example, screws. By making the base cap 24 attachable and detachable, the plant 13 can be exchangeably provided in the internal space 12 of the plant breeding appreciation device 10.

  The base cap 24 is provided with a recess 13a for installing the plant 13, and a culture container (not shown) is installed. The culture container is provided with a medium such as an agar-like substance mixed with nutrients suitable for plant growth according to the type of the plant 13, and a plant tissue for cultivating the plant 13 is implanted in the medium. .

  The power supply cord 25 electrically connects the power supply socket 37 provided on the printed circuit board 33 and the power supply terminal portion 22a. Reference numeral 26 denotes a metal pipe that protects the power supply cord 25.

  Furthermore, the plant growth appreciation device 10 according to the present invention is provided with a wavelength selective reflection film 40 that reflects light in a specific wavelength range of visible light. As shown in FIGS. 2 and 4, the wavelength selective reflection film 40 is provided in the form of horizontal stripes in the range of the lower half of the outer cover 11. In this embodiment, an optical interference film designed so as to selectively reflect only light having a peak wavelength of the blue-green LED 34b shown in FIG. 8 is formed on the outer side of the outer cover 11 by mask vapor deposition.

  For example, light in the range of 480 nm to 530 nm is selectively reflected so as to selectively reflect only light having a peak wavelength of the blue-green LED 34b and not to reflect peak light emitted from the blue LED chip of the white LED 34a shown in FIG. Thus, the wavelength selective reflection film 40 is formed by repeatedly depositing a high refractive index material and a low refractive index material. By reflecting light in the blue-green region, blue-green light can reach the root of the plant 13. On the other hand, the light emitted from the white LED 34a is partially reflected by the wavelength selective reflection film 40, but most of the light is transmitted. Therefore, the color of the light emitted from the outer cover 11 to the outside is maintained white.

  FIG. 5 is a schematic cross-sectional view for explaining a light irradiation state to the plant 13 when the LED light source 34 is turned on.

The plant growth interference device according to the present invention is configured as described above and operates as follows.
That is, the power for LED lighting is supplied to the LED light source 34 from the power source (not shown) via the power supply terminal portion 22a. Thereby, the LED light source 34 (white LED 34a and blue-green LED 34b) emits light. A part of the light emitted from the LED light source 34 reaches the plant 13 as shown in FIG. 5 and is reflected by the plant 13 in various directions. Of the light reflected by the plant, a part of the light that has reached the wavelength selective reflection film 40 is reflected and irradiates the root of the plant 13.

  When the scattered light of the light hitting the plant 13 hits the wavelength selective reflection film 40, the body part transmits light other than the blue-green component, that is, the irradiation light from the white LED 34a. On the other hand, of the same scattered light, the light irradiated by the blue-green LED 34 b is reflected by the wavelength selective reflection film 40. Similarly, of the scattered light, the light toward the outer cover 11 where the wavelength selective reflection film 40 is not provided is incident at an angle exceeding the critical angle because the wavelength selective reflection film 40 is not provided. Light irradiates the outside of the plant growing appreciation device 10 without reflection.

Thereby, since the light which hits the plant comes out outside the plant growth appreciation device 10, the original color of the plant can be appreciated. Moreover, the root of the plant 13 can be irradiated with light, so that light is supplied to the whole plant and the root of the plant is prevented from withering.
As described above, even when the number of LED light sources is small, the wavelength selective reflection film 40 can improve the irradiation efficiency especially by reflecting inside the internal space 12, and the light reflected from the plant 13 can also be reflected by the wavelength selective reflection film 40. Can be reused. Therefore, it is possible to prevent the decrease of the leaves that become the shadow of the LED light source 34 provided on the upper portion, and it is possible to appreciate the original color of the plant, which is useful from the viewpoint of plant growth and appreciation.

  In the embodiment described above, the wavelength selective reflection film 40 is vapor-deposited on the outer surface of the outer cover 10. However, if the film is disposed on the inner surface or outer surface of the outer cover, for example, a film having wavelength selective reflectivity is pasted. Obviously, it may be.

  In the above-described embodiment, the wavelength selective reflection film that selectively reflects light in the range of 480 nm to 530 nm is used. However, the plant growth time is shortened and the flowering rate is improved according to the type and purpose of the plant. An appropriate wavelength that can be achieved may be selected, and an LED having spectral characteristics suitable for the wavelength region may be provided in place of the blue-green LED.

  Thus, according to the present invention, it is possible to provide a plant growth appreciation device that can be used as an interior capable of growing plants with a simple configuration.

DESCRIPTION OF SYMBOLS 10 Plant upbringing appreciation device 11 Outer cover 12 Internal space 13 Plant 13a Concave part 20 Base part 21 Retainer 22 Bottom housing 22a Feed terminal part 23 Opening 24 Base cap 25 Feed cord 26 Pipe 30 Upper cap part 31 Housing 32 Cover 33 Printed circuit board 34 LED Light source 34a White LED
34b Blue-green LED
35 switch 36 switch knob 37 power supply socket 40 wavelength selective reflection film

Claims (7)

A hollow translucent cylindrical cover, a base provided at one end of the cylindrical cover, a cap provided at the opposite end of the cylindrical cover, and an internal space surrounded by these , A plant breeding appreciation device provided with an LED light source inside the cap part,
The LED light source has a white LED light source and a plurality of different color LED light sources around it,
The plant cover appreciation device, wherein a wavelength selective reflection film is disposed on the cylindrical cover.   The plant growth appreciation device according to claim 1, wherein the wavelength selective reflection film reflects a peak wavelength light of the different color LED light source. The LED light source is fixed to the cap part,
The white LED light source emits a mixed composite color of a blue light emitting LED chip and a phosphor that emits yellow light when excited by the blue LED light emitting chip. The plant growth appreciation device according to claim 1, wherein the plant growth appreciation device is disposed in the vicinity.   The plant growth appreciation device according to claim 1, wherein the base portion is attached to the cylindrical cover so that a culture medium for plant growth can be exchanged.   The plant growth appreciation apparatus according to claim 3, wherein the base portion is attached to the cylindrical cover so that a culture medium for plant growth can be exchanged.   6. The plant growing appreciation apparatus according to claim 5, wherein the wavelength selective reflection film reflects peak wavelength light of the different color LED light source.   7. The plant growth appreciation apparatus according to claim 1, wherein the wavelength selective reflection film is provided in a striped shape below the cylindrical cover.

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