JP2021058141A

JP2021058141A - Illumination for plant cultivation

Info

Publication number: JP2021058141A
Application number: JP2019184893A
Authority: JP
Inventors: 史朗武藤; Shiro Muto
Original assignee: Muto Shiro
Current assignee: Muto Shiro
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2021-04-15

Abstract

To provide an illumination for plant cultivation that can treat any plants with a single light source in any stage of germination, foliation, the growth of stems and leaves, flowering, and seed setting.SOLUTION: An illumination for plant cultivation employs an LED (light emitting diode) as a light source, which is a fluorescent lamp-type light source having an ultraviolet LED including ultraviolet light, a white LED including blue light, a red LED including red light, and a far-red LED including far-red light, with the LEDs arranged linearly.SELECTED DRAWING: Figure 1

Description

本発明は、植物栽培用照明に関し、詳しくは、植物栽培用ＬＥＤ照明における効率的な波長構成の技術に関する。 The present invention relates to lighting for plant cultivation, and more particularly to a technique for efficient wavelength composition in LED lighting for plant cultivation.

近年、植物を人工光源のみで栽培するケースが増えている。屋内で人工光源のみを使用することで天候に左右されることなく、安定して栽培することが出来る。
しかしながら、太陽光と人工光源とでは、光に含まれる波長成分や光の強度が異なる。また、植物の品種や成長段階によって、必要とする光の波長が異なるという問題もあった。
そこで、人工光源でありながら、様々な植物の育成に対して効率的な光を発生させる光源が求められていた。 In recent years, the number of cases where plants are cultivated only with an artificial light source is increasing. By using only an artificial light source indoors, stable cultivation is possible regardless of the weather.
However, the wavelength component and the intensity of light contained in light are different between sunlight and an artificial light source. Another problem is that the required wavelength of light differs depending on the plant variety and growth stage.
Therefore, there has been a demand for a light source that can generate light efficiently for growing various plants, even though it is an artificial light source.

上記したような問題に対して、従来からも様々な技術が提案されている。例えば、黄化状態にある又は緑化途上にある植物に対して、脱黄化又は緑化促進を進める光として、紫外光、赤外光を用いる技術が開示されている。
しかしながら、特定の植物に限定した光の採用であり、本発明の課題の解決には未だ至っていない。 Various techniques have been proposed for the above-mentioned problems. For example, a technique using ultraviolet light or infrared light as light for promoting deyellowing or greening of a plant in a yellowing state or in the process of greening is disclosed.
However, the adoption of light limited to a specific plant has not yet solved the problem of the present invention.

特開２０１３−２３３１１５号公報Japanese Unexamined Patent Publication No. 2013-233115

本発明は、上記問題点に鑑みてなされたもので、具体的には、人工光源の場合、様々な植物に対応した光を発生させることが出来ないという問題点に鑑み、あらゆる植物に対し、発芽、展葉、茎・葉の成長、開花、結実まで、１つの光源で対応することを可能にする植物栽培用照明を提供することを課題とするものである。 The present invention has been made in view of the above problems. Specifically, in view of the problem that an artificial light source cannot generate light corresponding to various plants, the present invention can be applied to all plants. An object of the present invention is to provide lighting for plant cultivation that enables one light source to handle sprouting, leaf expansion, stem / leaf growth, flowering, and fruiting.

上記課題を解決するため、本発明に係る植物栽培用照明は、光源としてＬＥＤ（ｌｉｇｈｔｅｍｉｔｔｉｎｇｄｉｏｄｅ）を採用するもので、紫外線を含む紫外線ＬＥＤと、青色を含む白色ＬＥＤと、赤色を含む赤色ＬＥＤと、遠赤光を含む遠赤ＬＥＤと、を持ち、ＬＥＤを線状に配置した蛍光灯型光源であることを手段とする。 In order to solve the above problems, the lighting for plant cultivation according to the present invention employs an LED (light emitting diode) as a light source, and is an ultraviolet LED containing ultraviolet rays, a white LED containing blue, and a red LED containing red. It is a fluorescent lamp type light source having a far-infrared LED including a far-infrared light and the LEDs arranged linearly.

また、本発明は、ＬＥＤの配列は、複数の白色ＬＥＤ、赤色ＬＥＤ、紫外線ＬＥＤ、複数の白色ＬＥＤ、赤色ＬＥＤ、遠赤ＬＥＤの順番を繰り返すことを手段とする。 Further, in the present invention, the arrangement of LEDs is a means of repeating the order of a plurality of white LEDs, a red LED, an ultraviolet LED, a plurality of white LEDs, a red LED, and a far-infrared LED.

さらに、本発明は、白色ＬＥＤは色温度４５００Ｋであり、紫外線ＬＥＤはＵＶ−Ａ領域である波長３１５ｎｍから４００ｎｍ、赤色ＬＥＤは、６１０ｎｍから７００ｎｍ、遠赤ＬＥＤは、７００ｎｍから８００ｎｍ、の範囲内にピークを持つことを手段とする。 Further, in the present invention, the white LED has a color temperature of 4500 K, the ultraviolet LED has a wavelength in the UV-A region of 315 nm to 400 nm, the red LED has a wavelength of 610 nm to 700 nm, and the far-red LED has a color temperature of 700 nm to 800 nm. By having a peak.

またさらに、本発明は、紫外線ＬＥＤのピークは、３８０ｎｍ、赤色ＬＥＤのピークは、６６０ｎｍ、遠赤ＬＥＤのピークは、７３０ｎｍ、であることを手段とする。 Furthermore, the present invention takes the means that the peak of the ultraviolet LED is 380 nm, the peak of the red LED is 660 nm, and the peak of the far-red LED is 730 nm.

さらにまた、本発明は、白色ＬＥＤ、赤色ＬＥＤ、紫外線ＬＥＤ、遠赤ＬＥＤのチップの比率は、８：２：１：１であることを手段とする。 Furthermore, the present invention takes the means that the ratio of the chips of the white LED, the red LED, the ultraviolet LED, and the far-infrared LED is 8: 2: 1: 1.

またさらに、本発明は、光源のスペクトル（分光分布）上、最大ピークは、赤色ＬＥＤによる赤色光成分であり、次に大きいピークは、白色ＬＥＤに含まれる青色光成分であることを手段とする。 Furthermore, the present invention means that the maximum peak is the red light component due to the red LED and the next largest peak is the blue light component contained in the white LED on the spectrum (spectral distribution) of the light source. ..

そしてまた、本発明は、光源のスペクトル上、青色のピーク、赤色のピークのレベルに比べて、紫外光、遠赤色光のピークは、半分以下のレベルであることを手段とする。 Further, the present invention is based on the fact that the peaks of ultraviolet light and far-red light are at a level of half or less of the levels of the blue peak and the red peak on the spectrum of the light source.

本発明に係る植物栽培用照明によれば、植物の発芽、展葉、茎・葉の成長、開花、結実まで、１つの光源で対応することが出来るので、植物栽培の効率化を図ることが出来る。 According to the lighting for plant cultivation according to the present invention, it is possible to handle the germination of plants, the spread of leaves, the growth of stems and leaves, flowering, and fruiting with one light source, so that the efficiency of plant cultivation can be improved. You can.

本発明に係る植物栽培用照明の実施例の全体図である。It is an overall view of the example of the lighting for plant cultivation which concerns on this invention. 本発明に係る植物栽培用照明のＬＥＤ配置例である。This is an example of LED arrangement of lighting for plant cultivation according to the present invention. 本発明に係る植物栽培用照明の光源のスペクトルである。It is a spectrum of the light source of the lighting for plant cultivation which concerns on this invention. 本発明に係る植物栽培用照明の各ＬＥＤのスペクトルである。It is a spectrum of each LED of the lighting for plant cultivation which concerns on this invention. 植物に最適な波長について説明するグラフである。It is a graph explaining the optimum wavelength for a plant.

本発明に係る植物栽培用照明１は、様々な植物に対応した光を発生させることが可能であることを最大の特徴とする。
以下、本発明に係る植物栽培用照明１の実施形態を、図面に基づいて説明する。 The most characteristic feature of the plant cultivation lighting 1 according to the present invention is that it is possible to generate light corresponding to various plants.
Hereinafter, an embodiment of the lighting 1 for plant cultivation according to the present invention will be described with reference to the drawings.

なお、本発明に係る植物栽培用照明１の全体形状や各部の形状等については、下記に述べる実施形態に限定されるものではなく、本発明の技術的思想の範囲内、即ち、同一の作用効果を発揮できる形状や寸法等の範囲内で変更することができるものである。 The overall shape of the plant cultivation lighting 1 and the shape of each part according to the present invention are not limited to the embodiments described below, and are within the scope of the technical idea of the present invention, that is, the same operation. It can be changed within the range of the shape and dimensions that can exert the effect.

図１から図５に従って、本発明を説明する。図１（ａ）は、本発明に係る植物栽培用照明１の正面図を示し、図１（ｂ）は同側面断面図を示すものである。図２（ａ）、（ｂ）は、ＬＥＤ基板上のＬＥＤの配置例を示す図である。図３は、本発明に係る植物栽培用照明１のスペクトルを示す図である。図４（ａ）は白色ＬＥＤのスペクトルを、図４（ｂ）は、紫外線、赤、遠赤ＬＥＤのスペクトルを示す。図５は、植物の育成に関連する光成分のスペクトルを示す。
本発明に係る植物栽培用照明１は、植物栽培に適した照明である。本実施例は、全体として直管型の蛍光灯の形状をし、蛍光灯用のソケットに挿すことで光を照射する態様を採る。
本発明に係る植物栽培用照明１は、ケース１０とＬＥＤ基板２０とから構成されている。 The present invention will be described with reference to FIGS. 1 to 5. FIG. 1A shows a front view of the plant cultivation lighting 1 according to the present invention, and FIG. 1B shows a cross-sectional view of the same side surface. 2 (a) and 2 (b) are diagrams showing an example of arranging LEDs on an LED substrate. FIG. 3 is a diagram showing a spectrum of lighting 1 for plant cultivation according to the present invention. FIG. 4A shows the spectrum of the white LED, and FIG. 4B shows the spectrum of the ultraviolet, red, and far-red LEDs. FIG. 5 shows a spectrum of light components related to plant growth.
The lighting 1 for plant cultivation according to the present invention is lighting suitable for plant cultivation. In this embodiment, a straight tube type fluorescent lamp is formed as a whole, and light is irradiated by inserting it into a socket for a fluorescent lamp.
The plant cultivation lighting 1 according to the present invention is composed of a case 10 and an LED substrate 20.

ケース１０は、外観を含み、ＬＥＤ基板２０を収容するための構造である。長さは、例えば１２０ｃｍ程度であり、一般的な蛍光灯のサイズである。円筒状であり、両端に電極１２を有する。ケース１０は、光拡散部１１と電極１２と電源１３を有する。図１（ｂ）は、図１（ａ）におけるＡ−Ａの断面図である。全体として円形であり、周囲を光拡散部１１が囲み、中央にＬＥＤ基板２０が配置されている。ＬＥＤからの光は、紙面上左右と上方に出射される。紙面上、ＬＥＤ基板２０の下側には、電源１３が配置されている。 The case 10 includes an appearance and has a structure for accommodating the LED substrate 20. The length is, for example, about 120 cm, which is the size of a general fluorescent lamp. It is cylindrical and has electrodes 12 at both ends. The case 10 has a light diffusing portion 11, an electrode 12, and a power supply 13. FIG. 1B is a cross-sectional view taken along the line AA in FIG. 1A. The whole is circular, the light diffusing portion 11 surrounds the periphery, and the LED substrate 20 is arranged in the center. The light from the LED is emitted left and right and upward on the paper surface. On the paper surface, the power supply 13 is arranged below the LED substrate 20.

光拡散部１１は、ＬＥＤ基板２０を円筒状に覆う構造であり、ＬＥＤ基板２０を保護する役割も持つもので、ガラス又はアクリル、ポリカーボネイト等の樹脂からなる透明あるいは半透明であり、ＬＥＤ基板２０からの光を拡散する。
電極１２は、ＬＥＤ基板２０に対して、外部から電力を供給するための端子である。通常の蛍光灯のソケットに挿入し、ソケットから１００Ｖ等の商用電源が電極１２を介して、ケース１０内に供給される。
電源１３は、外部から供給された１００Ｖ等の交流電圧を、整流し、ＬＥＤ基板２０に供給するのに適した直流電圧に変換するものである。
このような構成とすることで、蛍光灯のソケットがあれば、即時、使用することが出来、便利である。
また電源１３は、ＬＥＤ基板２０に供給するのに適した直流電圧を外部から直接供給可能な構成とすることもできる。 The light diffusing portion 11 has a structure that covers the LED substrate 20 in a cylindrical shape and also has a role of protecting the LED substrate 20. The light diffusing portion 11 is transparent or translucent made of glass or a resin such as acrylic or polycarbonate, and is transparent or translucent. Diffuses the light from.
The electrode 12 is a terminal for supplying electric power to the LED substrate 20 from the outside. It is inserted into a socket of a normal fluorescent lamp, and commercial power such as 100 V is supplied from the socket into the case 10 via the electrode 12.
The power supply 13 rectifies an AC voltage such as 100 V supplied from the outside and converts it into a DC voltage suitable for supplying to the LED substrate 20.
With such a configuration, if there is a fluorescent lamp socket, it can be used immediately, which is convenient.
Further, the power supply 13 may be configured so that a DC voltage suitable for supplying to the LED substrate 20 can be directly supplied from the outside.

ＬＥＤ基板２０には、赤色ＬＥＤ３０と遠赤色ＬＥＤ３１と紫外線ＬＥＤ３２と白色ＬＥＤ３３が配置されている。
ＬＥＤ基板２０は、長方形の基板であり、長手方向の長さは、植物栽培用照明１の長さに近い１２０ｃｍ弱である。幅方向は、数センチである。ＬＥＤ基板２０の上には、赤色ＬＥＤ３０と遠赤色ＬＥＤ３１と紫外線ＬＥＤ３２と白色ＬＥＤ３３が所定の順番に等間隔に配置されている。それぞれのＬＥＤは、電気的に導通するよう接続され、電源１３で生成された電力を用いて発光する。 A red LED 30, a far-red LED 31, an ultraviolet LED 32, and a white LED 33 are arranged on the LED substrate 20.
The LED substrate 20 is a rectangular substrate, and its length in the longitudinal direction is a little less than 120 cm, which is close to the length of the plant cultivation lighting 1. The width direction is a few centimeters. On the LED substrate 20, the red LED 30, the far-red LED 31, the ultraviolet LED 32, and the white LED 33 are arranged at equal intervals in a predetermined order. Each LED is connected so as to be electrically conductive and emits light using the electric power generated by the power source 13.

図４（ｂ）に、紫外線ＬＥＤの波長成分４２、赤色ＬＥＤの波長成分４３、遠赤色ＬＥＤの波長成分４４を示す。紫外線ＬＥＤの波長成分４２は、ＵＶ−Ａ領域である３１５ｎｍから４００ｎｍで構成され、概ね左右対称である。紫外線ピーク５０は、３８０ｎｍである。赤色ＬＥＤの波長成分４３は、６１０ｎｍから７００ｎｍで構成され、概ね左右対称である。赤色ピーク５２は、６６０ｎｍである。遠赤色ＬＥＤの波長成分４４は、７００ｎｍから８００ｎｍで構成され、概ね左右対称である。遠赤色ピーク５３は、７３０ｎｍである。 FIG. 4B shows the wavelength component 42 of the ultraviolet LED, the wavelength component 43 of the red LED, and the wavelength component 44 of the far-red LED. The wavelength component 42 of the ultraviolet LED is composed of 315 nm to 400 nm, which is the UV-A region, and is generally symmetrical. The ultraviolet peak 50 is 380 nm. The wavelength component 43 of the red LED is composed of 610 nm to 700 nm and is generally symmetrical. The red peak 52 is 660 nm. The wavelength component 44 of the far-red LED is composed of 700 nm to 800 nm and is generally symmetrical. The far-red peak 53 is 730 nm.

図４（ａ）に、白色ＬＥＤの波長成分４１を示す。白色ＬＥＤの波長成分４１は、５１０ｎｍに急峻な青色ピーク５１を持ち、黄色である５８０ｎｍ付近をピークになだらかな出力成分を持つ。全体としては、４５００Ｋ（ケルビン）の色温度を持つ白色ＬＥＤとなっている。 FIG. 4A shows the wavelength component 41 of the white LED. The wavelength component 41 of the white LED has a steep blue peak 51 at 510 nm, and has a gentle output component with a peak around 580 nm, which is yellow. As a whole, it is a white LED having a color temperature of 4500K (Kelvin).

図２に沿って、各ＬＥＤの構成を説明する。照明の波長成分が後述のようになるように、各ＬＥＤの個数が決定される。本実施例では、白色ＬＥＤ３３が４個、赤色ＬＥＤ３０が２個、遠赤色ＬＥＤ３１が１個、紫外線ＬＥＤ３２が１個の構成としている。本実施例は、１２０個のＬＥＤを配置する。管のどの部分でも同様の波長成分となるように各ＬＥＤの配置順番を決める。一例として、図２（ａ）に示すように、赤色ＬＥＤ３０、遠赤色ＬＥＤ３１、４つの白色ＬＥＤ３３、赤色ＬＥＤ３０、紫外線ＬＥＤ３２、４つの白色ＬＥＤ３３の順番を繰り返す。このようにすることで、赤色ＬＥＤ３０、遠赤色ＬＥＤ３１、紫外線ＬＥＤ３２の光が分散され、管のどの部分でも同様の波長成分となる。 The configuration of each LED will be described with reference to FIG. The number of each LED is determined so that the wavelength component of the illumination becomes as described later. In this embodiment, there are four white LEDs 33, two red LEDs 30, one far-red LED 31, and one ultraviolet LED 32. In this embodiment, 120 LEDs are arranged. The arrangement order of each LED is determined so that all parts of the tube have the same wavelength component. As an example, as shown in FIG. 2A, the order of the red LED 30, the far-red LED 31, the four white LEDs 33, the red LED 30, the ultraviolet LED 32, and the four white LEDs 33 is repeated. By doing so, the light of the red LED 30, the far-red LED 31, and the ultraviolet LED 32 is dispersed, and the same wavelength component is obtained in any part of the tube.

また、図２（ｂ）のように、赤色ＬＥＤ３０、２つの白色ＬＥＤ３３、遠赤色ＬＥＤ３１、２つの白色ＬＥＤ３３、赤色ＬＥＤ３０、２つの白色ＬＥＤ３３、紫外線ＬＥＤ３２の順番を繰り返してもよい。この構成とすることで白色ＬＥＤ３３の光をより分散することが出来る。 Further, as shown in FIG. 2B, the order of the red LED 30, the two white LEDs 33, the far red LED 31, the two white LEDs 33, the red LED 30, the two white LEDs 33, and the ultraviolet LED 32 may be repeated. With this configuration, the light of the white LED 33 can be more dispersed.

図３に沿って、照明の波長成分４０を説明する。比較的急峻なピークとして、紫外線ＬＥＤ３２による紫外線ピーク５０、白色ＬＥＤ３３による青色ピーク５１、赤色ＬＥＤ３０による赤色ピーク５２、遠赤色ＬＥＤ３１による遠赤色ピーク５３を持ち、なだらかなピークとして、５８０ｎｍ付近に黄色ピークを持つ。各ピークの大きさは、赤色ピーク５２が最も高く、次いで青色ピーク５１、黄色ピーク、紫外線ピーク５０、遠赤色ピーク５３の順である。青色ピーク５１と赤色ピーク５２の比率を調整することで植物種や成長段階に応じた光源とすることが出来る。 The wavelength component 40 of the illumination will be described with reference to FIG. As relatively steep peaks, it has an ultraviolet peak 50 due to an ultraviolet LED 32, a blue peak 51 due to a white LED 33, a red peak 52 due to a red LED 30, and a far red peak 53 due to a far red LED 31, and a gentle peak with a yellow peak near 580 nm. Have. The magnitude of each peak is highest in the red peak 52, followed by the blue peak 51, the yellow peak, the ultraviolet peak 50, and the far-red peak 53 in that order. By adjusting the ratio of the blue peak 51 and the red peak 52, the light source can be used according to the plant species and the growth stage.

また、ピークの大きさの比率では、青色ピーク５１、赤色ピーク５２の大きさに比べ、紫外線ピーク５０、遠赤色ピーク５３の大きさは半分以下である。このような比率とすることで、最も光合成に重要な波長成分である、青色、赤色成分を多くすることが出来る。 Further, in terms of the ratio of the peak sizes, the sizes of the ultraviolet peak 50 and the far-red peak 53 are less than half of the sizes of the blue peak 51 and the red peak 52. With such a ratio, it is possible to increase the amount of blue and red components, which are the most important wavelength components for photosynthesis.

図５に沿って、植物栽培に必要な波長について説明する。植物は光合成で成長する。その際に、使用されるのが光合成成分６０である。光合成成分６０は、４００ｎｍ付近から７００ｎｍ付近の波長である。また、それ以外に光形態形成として、光形態形成強光下反応成分６１、光形態形成赤色光効果成分６２、光形態形成遠赤色光効果成分６３が重要な光反応である。光形態形成とは、種子発芽、花芽分化、開花、子葉の展開、葉緑素合成、節間伸長などの植物の質的な変化を指す。
より詳しくは、青色光（４２０〜４７０ｎｍ付近）は、成長時の形態形成が主な効用であり、育成時茎を太くし徒長抑制、発芽した芽を緑化させる作用もある。ポリフェノールなどの抗酸化物質が多く含まれ育成が可能とも言われている。 The wavelength required for plant cultivation will be described with reference to FIG. Plants grow by photosynthesis. At that time, the photosynthetic component 60 is used. The photosynthetic component 60 has a wavelength of about 400 nm to about 700 nm. In addition, as photomorphogenesis, the photomorphogenesis strong light reaction component 61, the photomorphogenesis red light effect component 62, and the photomorphogenesis far-red light effect component 63 are important photoreactions. Photomorphogenesis refers to qualitative changes in plants such as seed germination, flower bud differentiation, flowering, cotyledon development, chlorophyll synthesis, and internode elongation.
More specifically, blue light (around 420 to 470 nm) has the main effect of morphogenesis during growth, and also has the effect of thickening the stem during growth, suppressing the growth of the stem, and greening the germinated buds. It is said that it can be grown because it contains a lot of antioxidants such as polyphenols.

赤色光（６３０〜６９０ｎｍ付近）は、光合成を促進し、花芽を育てる。花色の形成を促進するために、葉緑素を合成する。また、全体的な育成速度への影響度が大きい。甘みが増しビタミン類も多くなるとも言われている。
このように、光合成に対して６４０ｎｍ〜６９０ｎｍの赤色光の効果が最も大きく、葉の正常な形態成形には４２０ｎｍ〜４７０ｎｍの青色光が必要である。 Red light (around 630-690 nm) promotes photosynthesis and grows flower buds. Chlorophyll is synthesized to promote the formation of flower color. In addition, the degree of influence on the overall growth speed is large. It is also said that the sweetness increases and the amount of vitamins increases.
Thus, the effect of red light at 640 nm to 690 nm is greatest on photosynthesis, and blue light at 420 nm to 470 nm is required for normal leaf morphology.

また、遠赤色光（７００ｎｍ〜８００ｎｍ付近）は、植物の光受容体に吸収され、作物の成長、熟した果実の発達に関わるとされている。紫外線ＵＶＡ（３１５ｎｍから４００ｎｍ付近）は、蛋白質、糖分、合成酸の促進、一般的に植物の丈を抑制し、葉が厚くなる作用、発色色素の発色促進作用がある。また殺菌作用、植物病気を減らす効果もある。 Far-red light (around 700 nm to 800 nm) is absorbed by the photoreceptors of plants and is said to be involved in the growth of crops and the development of ripe fruits. Ultraviolet UVA (around 315 nm to 400 nm) promotes proteins, sugars, and synthetic acids, generally suppresses plant height, thickens leaves, and promotes color development of coloring pigments. It also has a bactericidal action and an effect of reducing plant diseases.

本発明に係る植物栽培用照明１では、これらの波長成分を照明に盛り込んでいる。
光形態形成強光下反応成分６１の波長成分を盛り込むため、白色ＬＥＤ３３を用い、光形態形成赤色光効果成分６２の波長成分を盛り込むため赤色ＬＥＤ３０を用い、光形態形成遠赤色光効果成分６３の波長成分を盛り込むため、遠赤色ＬＥＤ３１を用いている。
また、紫外線ＵＶＡの効果を盛り込むため、紫外線ＬＥＤ３２を用いている。 In the plant cultivation lighting 1 according to the present invention, these wavelength components are incorporated into the lighting.
A white LED 33 is used to incorporate the wavelength component of the reaction component 61 under strong light forming the light morphology, and a red LED 30 is used to incorporate the wavelength component of the red light effect component 62 forming the light morphology. A far-red LED 31 is used to incorporate the wavelength component.
Further, in order to incorporate the effect of ultraviolet UVA, an ultraviolet LED 32 is used.

このように、本発明に係る植物栽培用照明１によれば、植物の発芽、成長、開花、結実まで、１つの光源で対応することが出来るので、植物栽培の効率化を図ることが出来る。 As described above, according to the plant cultivation lighting 1 according to the present invention, it is possible to handle the germination, growth, flowering, and fruiting of plants with one light source, so that the efficiency of plant cultivation can be improved.

また、本実施例では、ＬＥＤ基板へのＬＥＤの配置を等間隔としたが、各ＬＥＤの光が混色しやすくなるように、白色ＬＥＤの間隔を狭めても良い。 Further, in this embodiment, the LEDs are arranged at equal intervals on the LED substrate, but the intervals between the white LEDs may be narrowed so that the light of each LED can be easily mixed.

本発明に係る植物栽培用照明は、ＬＥＤを用いた植物栽培用照明の植物育成の効果を増大させる技術として、産業上の利用可能性は大きいと思料する。 The lighting for plant cultivation according to the present invention is considered to have great industrial applicability as a technique for increasing the effect of growing plants for lighting for plant cultivation using LEDs.

１植物栽培用照明
１０ケース
１１光拡散部
１２電極
１３電源
２０ＬＥＤ基板
３０赤色ＬＥＤ
３１遠赤色ＬＥＤ
３２紫外線ＬＥＤ
３３白色ＬＥＤ
４０照明の波長成分
４１白色ＬＥＤの波長成分
４２紫外線ＬＥＤの波長成分
４３赤色ＬＥＤの波長成分
４４遠赤色ＬＥＤの波長成分
５０紫外線ピーク
５１青色ピーク
５２赤色ピーク
５３遠赤色ピーク
６０光合成成分
６１光形態形成強光下反応成分
６２光形態形成赤色光効果成分
６３光形態形成遠赤色光効果成分 1 Lighting for plant cultivation 10 Case 11 Light diffusing part 12 Electrode
13 Power supply 20 LED board 30 Red LED
31 Far-red LED
32 UV LED
33 white LED
40 Wavelength component of illumination 41 Wavelength component of white LED 42 Wavelength component of ultraviolet LED 43 Wavelength component of red LED 44 Wavelength component of far-red LED 50 Ultraviolet peak 51 Blue peak 52 Red peak 53 Far-red peak 60 Photosynthesis component 61 Light morphology formation Reaction component under strong light 62 Light form formation Red light effect component 63 Light form formation Far red light effect component

Claims

It is a fluorescent lamp type light source that has an ultraviolet LED containing ultraviolet rays, a white LED containing blue, a red LED containing red, and a far red LED containing far red light, and the LEDs are arranged linearly, and is a photosynthetic component. Lighting for plant cultivation, characterized in that not only 60 but also a reaction component 61 under strong light forming a light form, a red light effect component 62 forming a light form, and a far red light effect component 63 forming a light form can be emitted at the same time.

The lighting for plant cultivation according to claim 1, wherein the arrangement of the LEDs repeats the order of a plurality of white LEDs, a red LED, an ultraviolet LED, a plurality of white LEDs, a red LED, and a far red LED.

The white LED has a color temperature of 4500 K, the ultraviolet LED has a peak in the wavelength range of 315 nm to 400 nm in the UV-A region, the red LED has a peak in the range of 610 nm to 700 nm, and the far-infrared LED has a peak in the range of 700 nm to 800 nm. The lighting for plant cultivation according to claim 1 or 2.

The lighting for plant cultivation according to any one of claims 1 to 3, wherein the peak of the ultraviolet LED is 380 nm, the peak of the red LED is 660 nm, and the peak of the far red LED is 730 nm.

The lighting for plant cultivation according to any one of claims 1 to 4, wherein the ratio of the chips of the white LED, the red LED, the ultraviolet LED, and the far red LED is 8: 2: 1: 1.

In the spectrum of the light source, the maximum peak is the red light from the red LED.
The lighting for plant cultivation according to any one of claims 1 to 5, wherein the next largest peak is blue light from a white LED.

Compared to the levels of blue and red peaks on the spectrum of the light source,
The lighting for plant cultivation according to any one of claims 1 to 6, wherein the peak of ultraviolet rays and far red is at a level of half or less.