JP4388664B2

JP4388664B2 - Plant lighting equipment

Info

Publication number: JP4388664B2
Application number: JP2000096154A
Authority: JP
Inventors: 卓生村井; 康治竹中; 健一山田
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Priority date: 2000-03-31
Filing date: 2000-03-31
Publication date: 2009-12-24
Anticipated expiration: 2020-03-31
Also published as: JP2001275488A

Description

【０００１】
【発明の属する技術分野】
この発明は、住宅内、施設内、屋外等に設置され、植物の育成または観賞に用いられる植物照明装置に関する。
【０００２】
【従来の技術】
図１６は、例えば特開平８-３７９３０公報に示された従来の屋内植物栽培方法に用いられる植物照明装置の斜視図であり、図において、自立した支柱４１に発光体４０を取り付け、支柱４１を発光体４０の高さ等を任意に変えられるような可変構造とし、植物の種類等に応じて照射角度、照射距離等を調節する。発光体４０には、発光ダイオード等の光半導体を用い、植物体の成長に不足する光量を発光体によって補いながら、植物と発光体４０の間隔を必要に応じて自在に変更しながら植物を栽培する。
【０００３】
発光体４０の発光波長には、植物の光合成、花成及び形態形成に利用される６００ｎｍ〜７００ｎｍの光を用い、特に光量が不足すると徒長気味となり形態に影響する４００ｎｍ〜５００ｎｍの光が好ましい。
また、屋内植物栽培方法においては、赤色光、青色光の他に可視光を発する光半導体を加えてもよく、これによる配色の工夫により装飾的効果も期待できる。
【０００４】
【発明が解決しようとする課題】
上記のような従来の屋内植物栽培方法に用いられる植物照明装置では、植物体の成長に不足する光量を発光体４０によって補いながら屋内で植物を栽培することを目的としており、上記方法による照明光だけでは植物栽培に十分必要な光量を与えることはできず、また可視光光源を加え装飾効果を生み出す具体的手法が明らかでないという問題点があった。
【０００５】
この発明は、上述のような課題を解決するためになされたもので、植物栽培に十分必要な光量を与えることができ、観賞性を高めることができ、植物の育成状態をも制御できる植物用照明装置を得るものである。
【０００６】
【課題を解決するための手段】
この発明にかかる植物照明装置においては、光波長領域３５０〜４５０ｎｍの光を発する短波長照明部、光波長領域６００〜７００ｎｍの光を発する赤色照明部、光波長領域７００〜８００ｎｍの光を発する遠赤色照明部のうち、少なくとも１つの照明部を有する育成照明部と、光波長領域４５０〜６００ｎｍの光を発する観賞照明部と、前記育成照明部と前記観賞照明部を点灯する点灯回路部とを備えたものである。
【０００７】
また、前記育成照明部の短波長照明部、赤色照明部、遠赤色照明部のうち一つまたは全部の照明部、または前記観賞照明部を、選択的に調光するものである。
【０００８】
さらに、前記育成照明部の総照射量および前記観賞照明部の照射量を対象植物特有の光合成光補償点強度以上かつ光合成飽和点強度以下にするものである。
【０００９】
また、前記観賞照明部の照射量を対象植物特有の光合成光補償点強度とし、かつ前記育成照明部では少なくとも赤色照明部により照射するものである。
【００１０】
また、前記育成照明部または前記観賞照明部は、透光性材料からなる導光板と、この導光板の一端面に配置される光源と、この光源と前記導光板を収納する筐体とを備えたものである。
【００１１】
また、前記育成照明部は、発光ダイオードを有する光源を備え、前記観賞照明部は、高演色評価指数を有する電球を有する光源と、この光源に装着された凹型反射板と、前記光源から対象植物方向に発生する熱を低減する熱対策部とを備え、前記育成照明部と前記観賞照明部の照射方向を可変とする筐体に一体収納するものである。
【００１２】
また、前記観賞照明部は、照明用光源を収納する光源収納部と、この光源収納部から隔てて設けられ、照明を行う光出射部と、この光出射部と前記光源収納部を結び、前記光源収納部からの光を前記光出射部へ搬送する透光性光搬送部とを備え前記光源収納部に８００ｎｍ以上の光を不透過とする手段、または前記透光性光搬送部に８００ｎｍ以上の光を不透過とする光搬送部材料を有するものである。
【００１３】
また、前記観賞照明部は、対象植物の主構成部分が有する色に対して、国際照明学会特殊演色評価数計算用の試験色に対する特殊演色性評価数を高める発光分布を有する照明部を備えたものである。
【００１４】
また、前記観賞照明部に前記照明部を複数設け、前記複数の前記照明部を選択的に点消灯するものである。
【００１５】
また、前記育成照明部または前記観賞照明部に複数の照明部を備え、前記複数の照明部を各々調光し、混光して得られる混光波長分布をＪＩＳ標準光源またはＪＩＳ常用光源の発光波長分布に近似するものである。
【００１６】
また、前記育成照明部または前記観賞照明部に複数の照明部を備え、照前記複数の明部の点灯スケジュールを各々個別に設定するタイマーを備えたものである。
【００１７】
また、人の接近、在否を検出する人体検出手段を備え、前記検出手段による人の接近、在否の検出時には観賞照明部を点灯し、非検出時には観賞照明部を消灯するものである。
【００１８】
【発明の実施の形態】
実施の形態１.
図１はこの発明の実施の形態１を示す植物照明装置の構成図であり、図において、植物照明装置は、育成照明部４と、観賞照明部５と、この２つの照明部に電力を供給する点灯回路部６を備え、育成照明部４と観賞照明部５は対象植物を照明するように設置される。さらに、育成照明部４は、３５０〜４５０ｎｍの発光波長を有する短波長照明部１、６００〜７００ｎｍの発光波長を有する赤色照明部２、７００〜８００ｎｍの発光波長を有する遠赤色照明部３の３つの照明部うち少なくとも１つの照明部を有するように構成される。
【００１９】
次に、育成照明部４の作用について説明する。
まず、短波長照明部１の波長域３５０〜４５０ｎｍは、その照射方向に植物の育成方向を誘導するいわゆる屈光効果、また花や果実では色付きを高める着色促進などの効果を有する波長域である。
【００２０】
赤色照明部２の波長域６００〜７００ｎｍ及び遠赤色照明部３の波長域７００〜８００ｎｍは、植物の形態形成に関係する波長域であり、赤色照明部２の放射量を遠赤色照明部３の放射量より大きくすることで植物の形態を伸張方向に、また遠赤色照明部３の放射量を赤色照明部２の放射量より大きくすることで植物の形態を萎縮方向に形成することができる。
また、植物の種類によっては、６００〜７００ｎｍの光で発芽促進、７００〜８００ｎｍの光で発芽抑制現象を生じるものもある。さらに、６００〜７００ｎｍの光は、植物の光合成波長域で吸収効率の高い領域であり、育成という意味では非常に効率のよい波長域である。
【００２１】
よって、育成照明部４は、上記３つの照明部のうち、植物育成の目的に応じて上述したような効果を要する照明部を選択し組み合わせて照明を行う。
なお、育成照明部４の各照明部は、各波長域内で同一または異なる発光波長を有する複数の照明部で構成してもよく、また、それらの空間的配置については特定されるものではない。
【００２２】
次に、観賞照明部５の作用について説明する。
観賞照明部５は、可視光域において上記育成照明部４を構成する三つの照明部が有しない少なくとも４５０〜６００ｎｍの波長域を有するように構成する。育成照明部４だけで得られる発光分布は青色と赤色に偏りがあるため観賞用としては演色性が良好とは言えず、またそれら波長領域の組み合わせで得られる光は演出光として設計自由度がけして高いとはいえない。したがって、観賞照明部５で照射する波長域は、可視光領域の中で波長成分の連続性を高め、植物の演色性を向上させるため、あるいは植物及びその周囲空間を含めての演出自由度を向上させるためには欠かせない成分である。
【００２３】
さらに育成照明部４で必要となる放射量は、自然光照明下あるいは一般の屋内照明下での３５０〜８００ｎｍにおける総放射量に比較して、ごく少量であることが少なくない。したがって育成照明部４の放射量のみでは植物成長や維持に必要なエネルギーを作り出す光合成活動が十分とは必ずしも言えない。しかしながら、観賞照明部５の発光波長域は、光合成反応を生じる波長域に含まれるため、観賞照明を実現する機能を有する以外に、光合成活動を高める機能を有することができる。
【００２４】
なお、観賞照明部５の各照明部は、各波長域内で同一または異なる発光波長を有する複数の照明部で構成してもよく、また、それらの空間的配置については特定されるものではない。
以上のように構成することにより、上述したような植物の育成効果を得るつつ、同時に植物の演色性、演出を向上させる観賞照明を行うことできる。
【００２５】
次に、各照明部を調光可能にした場合について説明する。
本実施形態の植物照明装置において、育成照明部４を構成する短波長照明部１、赤色照明部２、遠赤色照明部３の各部を選択的に調光可能とするようにしてもよい。これにより、対象植物の種類が多い場合には植物の種類に応じた屈光性や伸張度合いなど所望の形態の形成、また、花、果実を対象とする場合には所望の色付きの度合いに応じて、各照明部の照射量を各々制御することが可能となる。
【００２６】
さらに、観賞照明部５を複数の照明部で構成する場合には、その一部または全部を選択的に調光可能とするような構造にしてもよい。その場合、複数照明部の調光度合いを制御することにより、観賞照明部５全体としての照明発光分布を変えることができる。例えば４５０ｎｍ付近の光成分を強くすることにより青味を強調することができ、５００ｎｍ付近の光成分を強くすると緑を、６００ｎｍ付近の光成分を強くすると黄赤を強調することができる。これにより、植物が設置される空間や植物の種類、あるいは観察者の心理的状態に応じが演出効果を高めることができる。さらに、必要に応じて４５０〜６００ｎｍ以外の光成分を含めてもよく、例えば７００ｎｍ付近の光を多く含めることにより、赤色を加えた演出を行うことができる。
【００２７】
なお、植物照明の目的に応じて、育成照明部４と観賞照明部５の両者を構成する複数の照明部を同時に調光するようにしてもよい。
以上のように各照明部を調光可能とすることにより、周囲空間の配色や照度に応じて、観賞照明部５の照射量を調整し、花木の色の演出効果や演色性を高めることができる。
【００２８】
次に、照明部の照射量について説明する。
育成照明部４及び観賞照明部５の総照度量を対象植物特有の光合成光補償点照度以上とすることで、植物が衰弱することのないよう育成のためのエネルギーを供給することができる。一方、総照度量を光合成飽和点照度以下とすれば植物の成長、維持に最大限利用されるエネルギーを限度に、植物に対し無駄に使われる光を無くし使用電力面で有効な照射することができる。
【００２９】
ここで、前述したように育成照明部４で必要となる放射量は、自然光照明下あるいは一般の屋内照明下での総放射量に比較して、ごく少量であることが少なくない。したがって、そのような場合には観賞照明部５の照射量の調整のみを考えてもよい。
【００３０】
しかしながら、観賞照明部５の照射量を対象植物特有の光合成光補償点強度とした場合には、それは植物の光合成活動において見かけ上、二酸化炭素の吸収、放出が均衡する点であり、植物衰弱への限界点でもある。したがって光合成光補償点照度においては照明電力を低く抑えることができるが、光合成補償点以上の光を与えた場合に比較して植物老化速度が速くなる傾向にある。
【００３１】
そこで、観賞照明部５による光合成光補償点照度に加えて、育成照明部の波長域を限定し、光合成効率のよい６００〜７００ｎｍの光を照射することにより、育成、衰弱という点で不安定な光合成補償点強度よりも高い光強度を与える光環境に植物をおくことができる。よって、植物照明電力を低く抑えながら植物を衰弱させず生育させることが可能となる。
【００３２】
実施の形態２.
次に、植物照明装置の具体的な構成について説明する。
まず、植物照明装置の照明部の具体的な構成について説明する。
図２はこの発明の実施の形態２を示す植物照明装置の照明部の構成図であり、（ａ）は側断面図、（ｂ）は上面図である。光源を発光ダイオード（以下ＬＥＤという、ＬＥＤはＬｉｇｈｔＥｍｉｔｔｉｎｇＤｉｏｄｅの略称）とし、ＬＥＤと面発光照明を行う導光板を用いた構造例である。
【００３３】
図において、照明部の光源部分は、ＬＥＤ７と、ＬＥＤ７へ電力供給を行うＬＥＤ電極８と、ＬＥＤ７へ電力供給を行うための配線が施されたＬＥＤ取付基板９とを備える。
【００３４】
光源部分以外には、例えば透光性の優れたアクリルなどの材料からなり、光入射及び射出効率向上のため端面を磨いた導光板１０、導光板１０表面に設けられた白色印刷塗料などの光拡散性の光拡散ドット１１、拡散ドット１１背面に配置される光拡散シート１２、また必要性に応じて導光板１０上の拡散ドットイメージを無くしたり、光を拡散させる効果を有する表面カバー１４、さらに面発光照明部筐体１３を備える。
【００３５】
ＬＥＤ７からの光はスネルの法則に従いながら、導光板１０内を進みながら拡散ドット１１にて光拡散され、導光板１０の広い一面から柔らかい光を発する。その結果、植物観賞の際、発光表面に光源メージがない均一な平面発光を得ることができ、さらに光源の光が直接観察者の目に入射することがなく、不快グレアが大幅に低減せしめる意匠性の面でも非常に優れた照明部を得ることができる。
【００３６】
なお、図２においては光源を長寿命で省エネ照明を特徴とするＬＥＤ７を用いたものを示したが、例えば所望の発光波長分布を得られるような蛍光体塗布を行った冷陰極ランプやガラス径が小径の小型電球などでもよい。
【００３７】
次に、図２の照明部を用いた植物照明装置の具体的な構成について説明する。
図３はこの発明の実施の形態２を示す植物照明装置の構成図であり、（ａ）は側面図、（ｂ）は正面図である。図において、植物照明装置は、面発光観賞照明部１５、ＬＥＤ育成照明部１６、各照明部を収納する照明部収納部１７、照明部収納部１７を支える支柱１８、対象植物を置く育成観賞用植物台座１９、及び台座シート２０さらに光源を点灯する点灯回路部６を備え、面発光観賞照明部１５は図２の照明部を同じ構造である。
【００３８】
育成照明部１６は前記短波長照明部１、あるいは赤色照明部２、あるいは遠赤色照明部３の発光波長を有するＬＥＤ７光源を直接点灯する形で、台座１９を中心に配置したものであり、２つの面発光観賞照明部１５は育成照明部１６を挟むようにその前後に配置したものである。
【００３９】
この構成により、前述した視覚的効果を有する植物照明を実現することができる。ここで、短波長照明部１の光源により極端な劣化を引き起こさないような導光板材料を選定すれば、育成照明部４についても同様の面発光導光板を用いた構成としてもよい。なお、各照明部の位置は装置上部のみに特定されるものではなく、目的に応じその位置をかえてもよい。
【００４０】
次に、植物照明装置の照明部に導光板を応用した他の構成について説明する。
図４はこの発明の実施の形態２を示す植物照明装置の観賞照明部の構成図であり、（ａ）は正面断面図、（ｂ）は側面図である。図において、少なくとも光入射端面と光射出端面を磨いた導光板の一端面に光入射させ、その反対面から射出光として照明光を得る構造とする。
【００４１】
この構成により、ＬＥＤ７からの光はやはりスネルの法則に従いながら、導光板１０ａ内を全反射しながら導光板１０ａ端面から柔らかい光を発する。また、光射出面からの発光方向を主として光射出面に垂直にな方向に揃えることができ、植物観賞の際、発光表面に光源メージが見えないほぼ均一な線発光を得ることができる。さらに、例えば導光板１０ａの側面を非透光性の拡散効果を有する材料で覆えば側面発光のない線状照明を得ることができ、光源の光が直接観察者の目に入射することがなく、不快グレアが大幅に低減でき、意匠性の面でも非常に優れた観賞照明部を得ることができる。
【００４２】
なお、上記導光板１０ａの光射出端面は平坦なものを示したが、光射出端面を凹型形状、あるいは凸型形状に加工してもよい。図５はこの発明の実施の形態２を示す植物照明装置の観賞照明部の導光板の構成図であり、（ａ）は凹型形状の導光板１０ｂ、（ｂ）は凸型形状の導光板１０ｃであり、凹型の場合は光強度を光射出端面中央方向で高めることができ、凸型の場合は光を植物周囲にも広げて照明できる利点を有する。
【００４３】
次に、図４の照明部を用いた植物照明装置の構成について説明する。
図６はこの発明の実施の形態２を示す植物照明装置の構成図であり、（ａ）は側面図、（ｂ）は正面図である。図において、植物照明装置は、線発光観賞照明部２１、ＬＥＤ育成照明部１６、各照明部を収納する照明部収納部１７、照明部収納部１７を支える支柱１８、対象植物を置く育成観賞用植物台座１９及び台座シート２０、さらに光源を点灯する点灯回路部６を備え、線発光観賞照明部２１は図４の照明部を同じ構造である。
【００４４】
この構造により、前述した視覚的効果を有する植物照明を実現することができる。
なお、凹型形状の導光板１０ｂ、凸型形状の導光板１０ｃを用いてもよい。
ここで、育成照明部４についても同様の線発光導光板１０ａ、凹型形状の導光板１０ｂ、凸型形状の導光板１０ｃを用いた構成としてもよい。、
なお、各照明部の位置は装置上部のみに特定されるものではなく、目的に応じその位置をかえてもよい。
【００４５】
実施の形態３.
次に、育成照明部４と観賞照明部５を一体化した照明部の具体的な構成について説明する。
図７はこの発明の実施の形態３を示す植物照明装置の照明部の構成図であり、（ａ）は正面断面図、（ｂ）は側面図である。
【００４６】
図において、育成照明部４には上記短波長照明部１または赤色照明部２または遠赤色照明部３の波長条件を満足するＬＥＤ光源２６を用い、ＬＥＤ光源固定板２７に固定される。ＬＥＤ光源２６は省電力、長寿命の特徴がある。
ここで、育成照明に必要な放射エネルギーは、前述のとおり観賞に必要な放射エネルギーに比較して非常に少ない場合が多い。したがって育成用光源としてＬＥＤ光源２６は好都合の光源素子であり、レンズモールドされたタイプでは指向性が高く、空間的に植物照射を効率良く行うことができる。
【００４７】
一方、観賞照明部光源２３は、例えば高演色性のクリプトン電球などを用い、指向性を有する配光特性を得るように凹型光源反射板２４を備えた構成とする。ここで、電球の発熱により観賞照明部５周囲には熱が発生し、植物に育成に障害を与える場合がある。そこで、観賞照明部５内に熱対策を施すことが必要であり、熱対策として例えば凹型光源反射板２４の上部に伸びるように放熱フィン２８を設ける、あるいは電球全面に少なくとも熱線を遮断し可視光領域を透過せしめる熱線吸収フィルタ２９あるい熱線遮断フィルタを設ける構造とすれば、植物育成に与える温度的影響を軽減することが可能となる。
【００４８】
よって、ＬＥＤ光源２６他からなる育成照明部４と観賞照明部光源２３他からなる観賞照明部５を一体固定型で光源収納部２５に収め、一体化させる。
なお、電力供給線３０により、育成照明部４と観賞照明部５へ電力が供給される。
【００４９】
次に、図７の照明部を用いた植物照明装置の具体的な構成について説明する。
図８はこの発明の実施の形態２を示す植物照明装置の構成図であり、（ａ）は側面図、（ｂ）は正面図である。図において、上記実施形態と同一または相当部分には同一符号を付け、説明を省略する。育成照明部４と観賞照明部５はそれらが一体固定型で収められる光源収納部２５内に置かれ、さらに光源収納部２５に設けられた光源収納部回動部３１を中心にして上下左右回動する構造としたものである。
【００５０】
この構造により、植物への熱効果を低減することができ、植物の形状、形態に応じ照射方向を自在に変えることができる空間的に効率良い植物育成及び観賞照明を行う植物照明装置を得ることができる。
なお、各照明部の位置は装置上部のみに特定されるものではなく、目的に応じその位置をかえてもよい。
【００５１】
実施の形態４．
次に、観賞照明部５を遠隔照明で実現する構成について説明する。
図９はこの発明の実施の形態４を示す植物照明装置の観賞照明部の構成図であり、（ａ）は光源収納部の断面図（ｂ）は光射出部の断面図である。図において、上記実施の形態と同一または相当部分には、同一符号を付け、説明を省略する。
【００５２】
観賞照明部５は、例えば光演色性のハロゲンランプなどの観賞照明部光源２３と、凹型光源反射板２４と、それらを収納する観賞照明光源収納部３２と、観賞照明光源収納部３２の光源光を光射出部３４まで搬送する光搬送部３３を備え、光射出部３４から放射される光は凹型光源反射板２４により指向性を持って照射される。
【００５３】
次に、図９の観賞照明部を用いた植物照明装置の具体的な構成について説明する。
図１０はこの発明の実施の形態４を示す植物照明装置の構成図であり、（ａ）は側面図、（ｂ）は正面図である。図において、上記実施形態と同一または相当部分には同一符号を付け、説明を省略する。
【００５４】
植物照明装置は、育成観賞用植物台座１９と一体化された観賞照明光源収納部３２と、観賞照明光源収納部３２から支柱の役割をなし、かつその内部に光搬送部３３を収納する光搬送部収納支柱３５と、育成照明部４及び観賞照明部光射出部３４を収納し、各々の光照射を行う光源収納部２５を備える。
【００５５】
この構成により、光照射部と光源は遠隔設置されることになり、光源交換を簡単に行える位置に観賞照明光源収納部３２を配置し、さらに交換取付構造を簡単にすることにより、光源の保守を容易に行うことが可能となる。なお、、観賞照明光源収納部３２の位置は図１０の位置に特定されるものではなく、目的に応じその位置をかえても良い。
【００５６】
さらに、観賞照明光源収納部３２内に８００ｎｍ以上の光を不透過とする、例えば熱線吸収フィルタ２９などの手段を有するように、あるいは光搬送部３３の材料が８００ｎｍ以上の光を不透過とする材料で構成するようにする。
この構成により、観賞照明として熱線を含まず、対象とする植物を熱放射により弱めることのない植物照明装置を実現することができる。
【００５７】
なお、本実施の形態では、育成照明部４にＬＥＤ光源２６を用いて直接照明を行う構成としているが、光搬送部３３を通した後の光照射部からの光波長分布が、上記短波長照明部１、赤色照明部２、遠赤色照明部３の光波長領域に含まれるように材料を選定、あるいは照明部を構成することにより、育成照明部４についても本実施の形態の観賞照明部と同様に遠隔照明を実現することができる。
【００５８】
実施の形態５．
次に、観賞照明部５の構成を草花、花木、樹木などの対象植物の、例えば花や葉の演色性を部分的に高めるようにした構成について説明する。
図１１はこの発明の実施の形態５を示す植物照明装置の構成図であり、図において、上記実施の形態と同一または相当部分には、同一符号を付け、説明を省略する。観賞照明部５は、対象植物の花の色の演色性を高める花演色照明部３６と、葉の色の演色性を高める葉演色照明部３７を備える。
【００５９】
次に、動作について説明する。
まず、両部の演色性を高める一方法として、特殊演色評価数（参考文献；色の性質と技術１９９０初版第３刷応用物理学会光学懇談会、朝倉書店１０８頁）を示す。特殊演色評価数はＣＩＥ（国際照明学会）特殊演色評価数計算用の６種中のある試験色に対して、試験照明光の演色性が高い場合、最高値１００とした高い数値を示すものである。表１にＣＩＥ（国際照明学会）特殊演色評価数計算用の６種の試験色の種類と名称（英語）を示す（参考文献；照明学会編１９８７年照明ハンドブック、オーム社、５５６頁）。
【００６０】
【表１】

【００６１】
そこで、対象植物が特定される場合、その対象植物における例えば花や葉などのある主構成部分が有する色名を例えば通常の生活で用いる赤、青、緑などのようなカテゴリカラーとして予測することができる。例えば花の色が赤としてカテゴライズされる場合には、表１の試験色中９番のＳｔｒｏｎｇｒｅｄが最も近い色となる。したがって予めその色の特殊演色評価数を高める照明光を発するように光源選定含め花演出照明部を構成すれば、花について高い演色効果を得ることができる。
【００６２】
このように照明部を構成することは、対象植物の他の構成部分についても当てはまるものであり、例えば葉についても同様の方法で葉演色照明部３７を構成すれば、葉の部分に対する演色効果を高めることができる。
【００６３】
また、上記特殊演色評価数を用いて複数の主構成部分に応じ演色性を高める照明部を、観賞照明部５中に複数設けても構わない。その場合、それらを照明部を植物の観賞の目的に合わせ選択的に点消灯することで、対象構成部分の演色性を植物の他の部分に対して引き立たせることができ、全体的に観賞効果を向上させることができる。
【００６４】
実施の形態６．
次に、育成照明部４または観賞照明部５に複数の照明部を用いた植物照明装置について説明する。
図１２はこの発明の実施の形態６を示す植物照明装置の観賞照明部の発光分布を示す図である。図において、実線ａ、ｂ、ｃは例えば観賞照明部５が３つの照明部を有する場合のそれらの相対発光波長分布を示す。灰色線ｅはＪＩＳ常用光源であるＤ６５光源の相対発光波長分布を示す。実線ｄは観賞照明部５の複数照明部の各々の照明光の混光比を、混光波長分布がＤ６５波長分布に最も近くなるように決定したものである。混光比の決定は例えば各波長におけるＤ６５波長成分と混光波長成分の差の２乗を４５０ｎｍ〜６００ｎｍの波長で積算、それを最小とする方法などがある。
なお、植物照明装置の全体の構成図は、図１と同様である。
【００６５】
このように観賞照明部５が複数の照明部で構成する場合に、上記のような方法で各照明部の混光比を決定し照明することにより、観賞照明部５として演色性の高い照明光を与えることができる。
なお、混光波長成分を近似させる対象光源はＪＩＳ常用光源（Ｄ６５光源、Ｄ５０光源、Ｄ５５光源、Ｄ７５光源）の他、演色性の高いＪＩＳ標準光源（Ａ光源、Ｃ光源）であってもよい
【００６６】
また、上記の混光比の決定は、観賞照明部５を構成する照明部の他、育成照明部４の各照明部とを併せ混光を行ってもよく、この場合３５０〜８００ｎｍの可視光全域を含む波長領域で常用光源あるいは標準光源に、その波長分布を近づけることができるため非常に演色性の高い照明光を実現できる。図１３でその様子を示す。
図１３はこの発明の実施の形態６を示す植物照明装置の育成照明部の発光分布を示す図である。図において、実線ａ、ｂ、ｃは観賞照明部５を構成する照明部、灰色線ｅ、ｆ、ｇは照明部４を構成する照明部の相対発光波長分布、実線ｈは例えば上記方法により得られる混光の相対波長分布を示している。灰色線ｉはＪＩＳ常用光源であるＤ６５光源の相対発光波長分布を示す。
【００６７】
実施の形態７．
次に、スケジュール機能を有する植物照明装置について説明する。
図１４はこの発明の実施の形態７を示す植物照明装置の構成図であり、図において、上記実施形態と同一または相当部分には同一符号を付け、説明を省略する。３８はタイマーであり、育成照明部４、観賞照明部５各々を点灯する点灯回路部６内にタイマー３８を設け、各照明部の点灯スケジュールを各々個別に設定するように構成する。
【００６８】
これにより、例えば観賞効果をあまり期待できない育成照明を夜間に重点的に行い、昼間は観賞効果向上を狙い観賞照明部５を支配的に点灯させるなどの照明を行うことができる。また、対象植物の育成のために必要な一日の照射時間が既知の場合には、それに合わせあらかじめ効率的な育成照明部４の点灯スケジュールを設定することが可能となる。
【００６９】
実施の形態８．
次に、人体検出機能を有する植物照明装置について説明する。
図１５はこの発明の実施の形態８を示す植物照明装置の構成図であり、図において、上記実施形態と同一または相当部分には同一符号を付け、説明を省略する。３９は人間が接近することに反応する検出手段であり、植物照明装置一体型あるいは分離型で構成され、待機時には少なくとも観賞照明部５が消灯し、検出時には少なくとも観賞照明部５が点灯するように構成する。
【００７０】
これにより人が接近してきた場合には植物観賞できるように観賞照明部５を点灯し、また周囲に人がいなくなった場合には観賞照明部５を消灯し、観賞性が必ずしも高いとは言えないが植物の形態形成などを行う育成照明部４のみを点灯するように構成する。
よって、育成、観賞を実現しつつ効率的な照明による省エネ照明を実現することができる。
【００７１】
【発明の効果】
この発明は、以上説明したように構成されているので、以下に示すような効果を奏する。
【００７２】
光波長領域３５０〜４５０ｎｍの光を発する短波長照明部、光波長領域６００〜７００ｎｍの光を発する赤色照明部、光波長領域７００〜８００ｎｍの光を発する遠赤色照明部のうち、少なくとも１つの照明部を有する育成照明部と、光波長領域４５０〜６００ｎｍの光を発する観賞照明部と、前記育成照明部と前記観賞照明部を点灯する点灯回路部とを備えたので、植物の育成効果を生じつつ、同時に植物の演色性、演出を向上させる観賞照明を行うことができる。
【００７３】
また、前記育成照明部の短波長照明部、赤色照明部、遠赤色照明部のうち一つまたは全部の照明部、または前記観賞照明部を、選択的に調光するので、周囲空間の配色や照度に応じ、観賞照明部の照射量を調整し花木の色の演出効果や演色性を高めることができる。
【００７４】
また、前記育成照明部の総照射量および前記観賞照明部の照射量を対象植物特有の光合成光補償点強度以上かつ光合成飽和点強度以下にするので、植物成長に最大限利用されるエネルギーを限度に、植物を衰弱させないエネルギーを供給することができる。
【００７５】
また、前記観賞照明部の照射量を対象植物特有の光合成光補償点強度とし、かつ前記育成照明部では少なくとも赤色照明部により照射するので、植物照明電力を低く抑えながら植物を衰弱させず生育させることが可能となる。
【００７６】
また、前記育成照明部または前記観賞照明部は、透光性材料からなる導光板と、この導光板の一端面に配置される光源と、この光源と前記導光板を収納する筐体とを備えたので、光源の光が直接観察者の目に入射することが少なく、不快グレアが大幅に低減でき、意匠性の面でも非常に優れた照明部を得ることができる。
【００７７】
また、前記育成照明部は、発光ダイオードを有する光源を備え、前記観賞照明部は、高演色評価指数を有する電球を有する光源と、この光源に装着された凹型反射板と、前記光源から対象植物方向に発生する熱を低減する熱対策部とを備え、前記育成照明部と前記観賞照明部の照射方向を可変とする筐体に一体収納するので、植物への熱効果を低減することができ、植物の形状、形態に応じ照射方向を自在に変えることができる空間的に効率良い植物育成及び観賞照明を行うことができる。
【００７８】
また、前記観賞照明部は、照明用光源を収納する光源収納部と、この光源収納部から隔てて設けられ、照明を行う光出射部と、この光出射部と前記光源収納部を結び、前記光源収納部からの光を前記光出射部へ搬送する透光性光搬送部とを備え
前記光源収納部に８００ｎｍ以上の光を不透過とする手段、または前記透光性光搬送部に８００ｎｍ以上の光を不透過とする光搬送部材料を有するので、光源の保守を容易に行うことが可能になるとともに、観賞照明として熱線を含まず、対象とする植物を熱放射により弱めることがない。
【００７９】
また、前記観賞照明部は、対象植物の主構成部分が有する色に対して、国際照明学会特殊演色評価数計算用の試験色に対する特殊演色性評価数を高める発光分布を有する照明部を備えたので、対象植物の主構成部分の演出効果を高めることができる。
【００８０】
また、前記観賞照明部に前記照明部を複数設け、複数の前記照明部を選択的に点消灯するので、対象構成部分の演色性を植物の他の部分に対して引き立たせることができ、全体的に観賞効果を向上させることができる。
【００８１】
また、前記育成照明部または前記観賞照明部に複数の照明部を備え、前記複数の照明部を各々調光し、混光して得られる混光波長分布をＪＩＳ標準光源またはＪＩＳ常用光源の発光波長分布に近似するので、演色性の高い観賞照明を実現することができる。
【００８２】
また、前記育成照明部または前記観賞照明部に複数の照明部を備え、照前記複数の明部の点灯スケジュールを各々個別に設定するタイマーを備えたので、植物照明の目的に応じ、あらかじめ効率的に各照明部の点灯スケジュールを設定することができ、省エネ照明を実現することができる。
【００８３】
また、人の接近、在否を検出する人体検出手段を備え、前記検出手段による人の接近、在否の検出時には観賞照明部を点灯し、非検出時には観賞照明部を消灯するので、育成、観賞を実現しつつ人の在、不在に応じた効率的な照明による省エネ照明を実現することができる。
【図面の簡単な説明】
【図１】この発明の実施の形態１を示す植物照明装置の構成図である。
【図２】この発明の実施の形態２を示す植物照明装置の観賞照明部の構成図である。
【図３】この発明の実施の形態２を示す植物照明装置の構成図である。
【図４】この発明の実施の形態２を示す植物照明装置の照明部の構成図である。
【図５】この発明の実施の形態２を示す植物照明装置の照明部の導光板の構成図である。
【図６】この発明の実施の形態２を示す植物照明装置の構成図である。
【図７】この発明の実施の形態３を示す植物照明装置の照明部の構成図である。
【図８】この発明の実施の形態３を示す植物照明装置の構成図である。
【図９】この発明の実施の形態４を示す植物照明装置の観賞照明部の構成図である。
【図１０】この発明の実施の形態４を示す植物照明装置の構成図である。
【図１１】この発明の実施の形態５を示す植物照明装置の構成図である。
【図１２】この発明の実施の形態６を示す植物照明装置の観賞照明部の発光分布を示す図である。
【図１３】この発明の実施の形態６を示す育成照明装置の観賞照明部の発光分布を示す図である。
【図１４】この発明の実施の形態７を示す植物照明装置の構成図である。
【図１５】この発明の実施の形態８を示す植物照明装置の構成図である。
【図１６】従来の植物照明装置の斜視図である。
【符号の説明】
１短波長照明部、２赤色照明部、３遠赤色照明部、４育成照明部、５観賞照明部、６点灯回路部、７ＬＥＤ、８ＬＥＤ電極、９ＬＥＤ取付基板、１０導光板、１１光拡散ドット、１２光拡散シート、１３面発光照明部筐体、１４表面カバー、１５面発光観賞照明部、１６ＬＥＤ育成照明部、１７照明部収納部、１８支柱、１９育成観賞用植物台座、２０台座シート、２１線発光観賞照明部、２３観賞照明部光源、２４凹型光源反射板、２５光源収納部、２６ＬＥＤ光源、２７ＬＥＤ光源固定板、２８放熱フィン、２９熱線吸収フィルタ、３０電力供給線、３１光源収納部回動部、３２観賞照明光源収納部、３３光搬送部、３４光射出部、３５光搬送部収納支柱、３６花演色照明部、３７葉演色照明部、３８タイマー、３９人体検出手段。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plant lighting device that is installed in a house, in a facility, outdoors, or the like and used for growing or appreciating plants.
[0002]
[Prior art]
FIG. 16 is a perspective view of a plant lighting device used in a conventional indoor plant cultivation method disclosed in, for example, Japanese Patent Laid-Open No. 8-37930. In FIG. The light emitting body 40 has a variable structure that can arbitrarily change the height and the like, and the irradiation angle, irradiation distance, and the like are adjusted according to the type of plant. The light emitter 40 is made of an optical semiconductor such as a light emitting diode, and the plant is cultivated while freely changing the distance between the plant and the light emitter 40 as necessary while compensating for the amount of light that is insufficient for the growth of the plant. To do.
[0003]
The light emission wavelength of the light-emitting body 40 is 600 nm to 700 nm used for plant photosynthesis, flowering and morphogenesis, and 400 nm to 500 nm is preferred because the light becomes dull when the amount of light is insufficient and affects the form.
Moreover, in an indoor plant cultivation method, you may add the optical semiconductor which emits visible light other than red light and blue light, and the decorative effect can also be anticipated by the device of the color scheme by this.
[0004]
[Problems to be solved by the invention]
The plant lighting device used in the conventional indoor plant cultivation method as described above is intended to grow a plant indoors while compensating for the amount of light that is insufficient for the growth of the plant by the light emitter 40, and the illumination light by the above method However, there is a problem that a specific method for producing a decorative effect by adding a visible light source is not clear.
[0005]
This invention was made in order to solve the problems as described above, and can give a sufficient amount of light for plant cultivation, can enhance ornamental properties, and can control the growing state of plants. A lighting device is obtained.
[0006]
[Means for Solving the Problems]
In the plant illumination device according to the present invention, a short wavelength illumination unit that emits light in the light wavelength region of 350 to 450 nm, a red illumination unit that emits light in the light wavelength region of 600 to 700 nm, and a far light that emits light in the light wavelength region of 700 to 800 nm. Among the red illumination units, a growth illumination unit having at least one illumination unit, an ornamental illumination unit that emits light in a light wavelength region of 450 to 600 nm, and a lighting circuit unit that lights the growth illumination unit and the ornamental illumination unit It is provided.
[0007]
Further, one or all of the short-wave illumination unit, the red illumination unit, and the far-red illumination unit of the breeding illumination unit, or the ornamental illumination unit is selectively dimmed.
[0008]
Furthermore, the total irradiation amount of the breeding illumination unit and the irradiation amount of the ornamental illumination unit are set to be not less than the photosynthetic light compensation point intensity peculiar to the target plant and not more than the photosynthetic saturation point intensity.
[0009]
Further, the irradiation amount of the ornamental illumination unit is set to the light-synthesizing light compensation point intensity peculiar to the target plant, and the breeding illumination unit irradiates at least the red illumination unit.
[0010]
The breeding illumination unit or the ornamental illumination unit includes a light guide plate made of a translucent material, a light source disposed on one end surface of the light guide plate, and a housing for housing the light source and the light guide plate. It is a thing.
[0011]
The breeding illumination unit includes a light source having a light emitting diode, and the ornamental illumination unit includes a light source having a light bulb having a high color rendering index, a concave reflector mounted on the light source, and a target plant from the light source. And a heat countermeasure unit that reduces heat generated in the direction, and is integrally housed in a housing in which the irradiation direction of the rearing illumination unit and the ornamental illumination unit is variable.
[0012]
The ornamental illumination unit is provided separately from the light source storage unit that stores the light source for illumination, the light emission unit that performs illumination, and connects the light emission unit and the light source storage unit. A light-transmitting light transporting part that transports light from the light source storage part to the light emitting part, means for making the light source storage part opaque to light of 800 nm or more, or 800 nm or more in the light-transmitting light transporting part It has the light conveyance part material which does not transmit the light.
[0013]
In addition, the ornamental lighting unit includes a lighting unit having a light emission distribution that increases a special color rendering index for a test color for calculating the international color society special color rendering index with respect to a color of a main component of the target plant. Is.
[0014]
In addition, a plurality of the illumination units are provided in the ornamental illumination unit, and the plurality of illumination units are selectively turned on and off.
[0015]
Further, the breeding illumination unit or the ornamental illumination unit is provided with a plurality of illumination units, and each of the plurality of illumination units is dimmed, and the mixed light wavelength distribution obtained by mixing is emitted from a JIS standard light source or a JIS regular light source. It approximates the wavelength distribution.
[0016]
Further, the breeding illumination unit or the ornamental illumination unit includes a plurality of illumination units, and includes a timer for individually setting lighting schedules for the plurality of bright portions.
[0017]
In addition, a human body detecting means for detecting the approach and presence / absence of a person is provided, and the ornamental illumination unit is turned on when the detection means detects the approach and presence / absence of the person, and the ornamental illumination unit is turned off when no detection is made.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1.
FIG. 1 is a configuration diagram of a plant lighting device showing Embodiment 1 of the present invention. In the figure, the plant lighting device supplies power to a growing lighting unit 4, an ornamental lighting unit 5, and the two lighting units. The illuminating lighting unit 4 and the ornamental lighting unit 5 are installed so as to illuminate the target plant. Further, the growing illumination unit 4 includes a short wavelength illumination unit 1 having an emission wavelength of 350 to 450 nm, a red illumination unit 2 having an emission wavelength of 600 to 700 nm, and a far red illumination unit 3 having an emission wavelength of 700 to 800 nm. It is comprised so that it may have at least one illumination part among the two illumination parts.
[0019]
Next, the operation of the breeding illumination unit 4 will be described.
First, the wavelength range 350 to 450 nm of the short wavelength illumination unit 1 is a wavelength range that has a so-called reflection effect that induces the growing direction of the plant in the irradiation direction, and an effect of promoting coloration that enhances coloring in flowers and fruits. .
[0020]
The wavelength region 600 to 700 nm of the red illumination unit 2 and the wavelength region 700 to 800 nm of the far red illumination unit 3 are wavelength regions related to the morphogenesis of the plant, and the amount of radiation of the red illumination unit 2 is changed to that of the far red illumination unit 3. By making it larger than the amount of radiation, the form of the plant can be formed in the extending direction, and by making the amount of radiation of the far red illumination unit 3 larger than that of the red illumination unit 2, the form of the plant can be formed in the direction of atrophy.
In addition, depending on the type of plant, germination is promoted with light of 600 to 700 nm, and germination suppression is caused with light of 700 to 800 nm. Furthermore, light of 600 to 700 nm is a region having high absorption efficiency in the photosynthesis wavelength region of plants, and is a very efficient wavelength region in terms of growing.
[0021]
Therefore, the breeding illumination unit 4 performs illumination by selecting and combining illumination units that require the effects described above according to the purpose of plant growth among the three illumination units.
In addition, each illumination part of the breeding illumination part 4 may be comprised by the several illumination part which has the same or different light emission wavelength within each wavelength range, Moreover, those spatial arrangements are not specified.
[0022]
Next, the operation of the ornamental illumination unit 5 will be described.
The ornamental illumination unit 5 is configured to have a wavelength range of at least 450 to 600 nm that the three illumination units constituting the breeding illumination unit 4 do not have in the visible light range. Since the light emission distribution obtained only by the rearing illumination unit 4 is biased between blue and red, it cannot be said that the color rendering is good for ornamental use, and the light obtained by the combination of these wavelength regions has a design freedom as production light. It's not really expensive. Therefore, the wavelength range irradiated by the ornamental illumination unit 5 increases the continuity of the wavelength component in the visible light range, improves the color rendering of the plant, or provides a degree of freedom of production including the plant and its surrounding space. It is an indispensable ingredient to improve.
[0023]
Furthermore, the amount of radiation required for the growing illumination unit 4 is often very small compared to the total amount of radiation at 350 to 800 nm under natural light illumination or general indoor illumination. Therefore, it cannot be said that the photosynthetic activity for producing energy necessary for plant growth and maintenance is sufficient only by the radiation amount of the growing lighting unit 4. However, since the emission wavelength range of the ornamental illumination unit 5 is included in the wavelength range in which the photosynthesis reaction occurs, it can have a function of enhancing photosynthetic activity in addition to the function of realizing the ornamental illumination.
[0024]
In addition, each illuminating part of the ornamental illuminating part 5 may be configured by a plurality of illuminating parts having the same or different emission wavelengths in each wavelength range, and the spatial arrangement thereof is not specified.
By configuring as described above, it is possible to perform ornamental illumination that improves the color rendering properties and effects of the plant while simultaneously obtaining the plant-growing effect as described above.
[0025]
Next, the case where each illumination unit is dimmable will be described.
In the plant illumination device of the present embodiment, each part of the short wavelength illumination unit 1, the red illumination unit 2, and the far red illumination unit 3 constituting the breeding illumination unit 4 may be selectively dimmable. As a result, when there are many types of target plants, depending on the type of plant, formation of a desired form such as light reflectivity and extension degree, and when targeting flowers and fruits, depending on the desired degree of coloring. Thus, it becomes possible to control the irradiation amount of each illumination unit.
[0026]
Furthermore, when the ornamental illumination unit 5 is composed of a plurality of illumination units, a part or all of the ornamental illumination unit 5 may be configured to be selectively dimmable. In that case, the illumination light emission distribution of the ornamental illumination unit 5 as a whole can be changed by controlling the dimming degree of the plurality of illumination units. For example, the blueness can be enhanced by strengthening the light component near 450 nm, and green can be enhanced by increasing the light component near 500 nm, and yellow-red can be enhanced by increasing the light component near 600 nm. Thereby, according to the space where a plant is installed, the kind of plant, or the psychological state of an observer, a production effect can be heightened. Furthermore, if necessary, light components other than 450 to 600 nm may be included. For example, by adding a large amount of light in the vicinity of 700 nm, it is possible to produce an effect in which red is added.
[0027]
In addition, according to the objective of plant illumination, you may make it light-control the some illumination part which comprises both the cultivation illumination part 4 and the ornamental illumination part 5 simultaneously.
By making each lighting unit dimmable as described above, it is possible to adjust the irradiation amount of the ornamental lighting unit 5 according to the color arrangement and illuminance of the surrounding space, and to enhance the color effect and color rendering of the flowering tree. it can.
[0028]
Next, the irradiation amount of the illumination unit will be described.
By setting the total illuminance amount of the cultivating illumination unit 4 and the ornamental illumination unit 5 to be equal to or greater than the light-synthesizing light compensation point illuminance specific to the target plant, it is possible to supply energy for nurturing so that the plant does not become weak. On the other hand, if the total amount of illuminance is less than or equal to the photosynthetic saturation point illuminance, the maximum energy used for the growth and maintenance of plants can be limited, and light that is wasted on plants can be eliminated and effective irradiation can be achieved in terms of power consumption. it can.
[0029]
Here, as described above, the amount of radiation required for the growing illumination unit 4 is often very small compared to the total amount of radiation under natural light illumination or general indoor illumination. Therefore, in such a case, only adjustment of the irradiation amount of the ornamental illumination unit 5 may be considered.
[0030]
However, when the irradiation amount of the ornamental illumination unit 5 is set to the photosynthetic light compensation point intensity peculiar to the target plant, it is a point where the absorption and release of carbon dioxide are apparently balanced in the photosynthetic activity of the plant, and the plant is weakened. It is also the limit point. Therefore, the illumination power can be kept low at the illuminance at the photosynthetic light compensation point, but the plant aging rate tends to be faster than when light above the photosynthetic compensation point is given.
[0031]
Therefore, in addition to the light intensity of the photosynthetic light compensation point by the ornamental illumination unit 5, by limiting the wavelength range of the growth illumination unit and irradiating light of 600 to 700 nm with good photosynthesis efficiency, it is unstable in terms of growth and weakness. Plants can be placed in a light environment that provides light intensity higher than the photosynthetic compensation point intensity. Therefore, it is possible to grow the plant without degrading it while keeping the plant illumination power low.
[0032]
Embodiment 2.
Next, a specific configuration of the plant lighting device will be described.
First, a specific configuration of the illumination unit of the plant illumination device will be described.
FIG. 2 is a configuration diagram of an illumination unit of a plant illumination device showing Embodiment 2 of the present invention, in which (a) is a side sectional view and (b) is a top view. The light source is a light emitting diode (hereinafter referred to as LED, LED is an abbreviation for Light Emitting Diode), and is a structural example using a light guide plate that performs surface emitting illumination with the LED.
[0033]
In the figure, the light source portion of the illumination unit includes an LED 7, an LED electrode 8 that supplies power to the LED 7, and an LED mounting substrate 9 that is provided with wiring for supplying power to the LED 7.
[0034]
Other than the light source part, the light guide plate 10 is made of a material such as acrylic having excellent translucency, and the end face is polished for improving light incident and emission efficiency, and light such as white printing paint provided on the surface of the light guide plate 10. A diffusive light diffusing dot 11, a light diffusing sheet 12 disposed on the back of the diffusing dot 11, and a surface cover 14 having an effect of eliminating the diffusing dot image on the light guide plate 10 or diffusing light according to necessity, Furthermore, a surface-emitting illumination unit housing 13 is provided.
[0035]
Light from the LED 7 is diffused by the diffusing dots 11 while proceeding through the light guide plate 10 while following Snell's law, and emits soft light from a wide surface of the light guide plate 10. As a result, it is possible to obtain uniform planar light emission without a light source image on the light emitting surface during plant viewing, and further, the light from the light source does not directly enter the eyes of the observer, and the discomfort glare is greatly reduced A very excellent illumination part can also be obtained in terms of properties.
[0036]
In FIG. 2, the light source is a long-life LED 7 that features energy-saving illumination. However, for example, a cold cathode lamp or glass diameter coated with a phosphor that can obtain a desired emission wavelength distribution. May be a small light bulb with a small diameter.
[0037]
Next, a specific configuration of the plant lighting device using the lighting unit of FIG. 2 will be described.
FIG. 3 is a configuration diagram of a plant lighting device showing Embodiment 2 of the present invention, in which (a) is a side view and (b) is a front view. In the figure, the plant illumination device includes a surface emitting ornamental illumination unit 15, an LED breeding illumination unit 16, an illumination unit accommodating unit 17 for accommodating each illumination unit, a support column 18 for supporting the illumination unit accommodating unit 17, and a planting ornament for placing a target plant. The plant pedestal 19 and the pedestal sheet 20 are further provided with a lighting circuit unit 6 for turning on the light source, and the surface emitting ornamental illumination unit 15 has the same structure as the illumination unit of FIG.
[0038]
The breeding illumination unit 16 is arranged around the pedestal 19 so as to directly light the LED 7 light source having the emission wavelength of the short wavelength illumination unit 1, the red illumination unit 2, or the far red illumination unit 3. The two surface-emitting ornamental illumination units 15 are arranged before and after the rearing illumination unit 16 so as to sandwich it.
[0039]
With this configuration, it is possible to realize the plant illumination having the visual effect described above. Here, if a light guide plate material that does not cause extreme deterioration by the light source of the short wavelength illumination unit 1 is selected, the growth illumination unit 4 may be configured to use a similar surface-emitting light guide plate. In addition, the position of each illumination part is not specified only in the upper part of the apparatus, and the position may be changed according to the purpose.
[0040]
Next, the other structure which applied the light-guide plate to the illumination part of a plant lighting apparatus is demonstrated.
4A and 4B are configuration diagrams of an ornamental illumination unit of the plant illumination device showing Embodiment 2 of the present invention, in which FIG. 4A is a front sectional view and FIG. 4B is a side view. In the figure, light is incident on one end surface of a polished light guide plate with at least a light incident end surface and a light emitting end surface, and illumination light is obtained as emitted light from the opposite surface.
[0041]
With this configuration, the light from the LED 7 emits soft light from the end surface of the light guide plate 10a while totally reflecting the light guide plate 10a while following Snell's law. In addition, the light emission direction from the light emission surface can be aligned mainly in a direction perpendicular to the light emission surface, and a substantially uniform line emission in which no light source image is visible on the light emission surface can be obtained during plant viewing. Further, for example, if the side surface of the light guide plate 10a is covered with a non-transparent material having a diffusion effect, linear illumination without side light emission can be obtained, and light from the light source does not directly enter the eyes of the observer. Unpleasant glare can be greatly reduced, and an ornamental illumination unit that is very excellent in terms of design can be obtained.
[0042]
Although the light exit end face of the light guide plate 10a is flat, the light exit end face may be processed into a concave shape or a convex shape. 5A and 5B are configuration diagrams of a light guide plate of an ornamental illumination unit of a plant lighting device according to Embodiment 2 of the present invention. FIG. 5A is a concave light guide plate 10b, and FIG. 5B is a convex light guide plate 10c. In the case of the concave type, the light intensity can be increased in the center direction of the light emission end face, and in the case of the convex type, there is an advantage that the light can be spread and illuminated around the plant.
[0043]
Next, the structure of the plant lighting apparatus using the illumination part of FIG. 4 will be described.
FIG. 6 is a configuration diagram of a plant lighting device showing Embodiment 2 of the present invention, in which (a) is a side view and (b) is a front view. In the figure, the plant illumination device includes a line-emitting ornamental illumination unit 21, an LED breeding illumination unit 16, an illumination unit housing unit 17 for housing each illumination unit, a column 18 for supporting the illumination unit housing unit 17, and a planting ornament for placing a target plant. The plant pedestal 19 and the pedestal sheet 20 and the lighting circuit unit 6 for turning on the light source are provided, and the linear light emission ornamental illumination unit 21 has the same structure as the illumination unit of FIG.
[0044]
With this structure, the plant illumination having the visual effect described above can be realized.
A concave light guide plate 10b and a convex light guide plate 10c may be used.
Here, the growing illumination unit 4 may also be configured using the same linear light-emitting light guide plate 10a, concave light guide plate 10b, and convex light guide plate 10c. ,
In addition, the position of each illumination part is not specified only in the upper part of the apparatus, and the position may be changed according to the purpose.
[0045]
Embodiment 3.
Next, a specific configuration of the illumination unit in which the breeding illumination unit 4 and the ornamental illumination unit 5 are integrated will be described.
FIG. 7: is a block diagram of the illumination part of the plant illuminating device which shows Embodiment 3 of this invention, (a) is front sectional drawing, (b) is a side view.
[0046]
In the figure, an LED light source 26 that satisfies the wavelength conditions of the short wavelength illumination unit 1, the red illumination unit 2, or the far red illumination unit 3 is used for the growth illumination unit 4 and is fixed to the LED light source fixing plate 27. The LED light source 26 has features of power saving and long life.
Here, as described above, the radiant energy necessary for the breeding illumination is often very small as compared with the radiant energy necessary for viewing. Therefore, the LED light source 26 is a convenient light source element as a growth light source, and the lens-molded type has high directivity and can efficiently perform plant irradiation spatially.
[0047]
On the other hand, the ornamental illumination unit light source 23 uses, for example, a high color rendering krypton bulb and has a concave light source reflector 24 so as to obtain a light distribution characteristic having directivity. Here, heat may be generated around the ornamental illumination unit 5 due to heat generated by the light bulb, which may impede plant growth. Therefore, it is necessary to take heat countermeasures in the ornamental illumination unit 5, and as heat countermeasures, for example, heat radiation fins 28 are provided so as to extend above the concave light source reflector 24, or at least the heat rays are blocked on the entire surface of the bulb to make visible light visible. If the heat ray absorbing filter 29 or the heat ray blocking filter that allows the region to pass through is provided, it is possible to reduce the temperature effect on plant growth.
[0048]
Therefore, the rearing illumination unit 4 composed of the LED light source 26 and the like and the ornamental illumination unit 5 composed of the ornamental illumination unit light source 23 and the like are housed and integrated in the light source storage unit 25 in an integrated fixed type.
Note that power is supplied to the breeding illumination unit 4 and the ornamental illumination unit 5 through the power supply line 30.
[0049]
Next, a specific configuration of the plant lighting device using the lighting unit of FIG. 7 will be described.
FIGS. 8A and 8B are configuration diagrams of a plant lighting device showing Embodiment 2 of the present invention, in which FIG. 8A is a side view and FIG. 8B is a front view. In the figure, the same reference numerals are given to the same or corresponding parts as in the above embodiment, and the description thereof is omitted. The nurturing illumination unit 4 and the ornamental illumination unit 5 are placed in a light source storage unit 25 in which they are housed in a single fixed type, and are further rotated around the light source storage unit rotation unit 31 provided in the light source storage unit 25 in the vertical and horizontal directions. It has a moving structure.
[0050]
With this structure, it is possible to reduce a thermal effect on a plant, and to obtain a plant lighting device that performs spatially efficient plant growth and ornamental lighting that can freely change the irradiation direction according to the shape and form of the plant. Can do.
In addition, the position of each illumination part is not specified only in the upper part of the apparatus, and the position may be changed according to the purpose.
[0051]
Embodiment 4 FIG.
Next, the structure which implement | achieves ornamental illumination part 5 by remote illumination is demonstrated.
FIG. 9 is a configuration diagram of an ornamental illumination unit of a plant illumination device showing Embodiment 4 of the present invention, in which (a) is a cross-sectional view of a light source storage unit and (b) is a cross-sectional view of a light emitting unit. In the figure, the same reference numerals are given to the same or corresponding parts as those in the above embodiment, and the description is omitted.
[0052]
The ornamental illumination unit 5 includes, for example, an ornamental illumination unit light source 23 such as a light-rendering halogen lamp, a concave light source reflector 24, an ornamental illumination light source storage unit 32 for storing them, and a light source light of the ornamental illumination light source storage unit 32. Is provided to the light emitting portion 34, and the light emitted from the light emitting portion 34 is irradiated with directivity by the concave light source reflector 24.
[0053]
Next, a specific configuration of the plant lighting device using the ornamental lighting unit in FIG. 9 will be described.
FIG. 10 is a configuration diagram of a plant lighting device showing Embodiment 4 of the present invention, in which (a) is a side view and (b) is a front view. In the figure, the same reference numerals are given to the same or corresponding parts as in the above embodiment, and the description thereof is omitted.
[0054]
The plant illumination device includes an ornamental illumination light source storage unit 32 integrated with the plant base 19 for nurturing ornamentation, and a light transport that serves as a support from the ornamental illumination light source storage unit 32 and houses the light transport unit 33 therein. The unit storage column 35, the rearing illumination unit 4, and the ornamental illumination unit light emitting unit 34 are stored, and the light source storage unit 25 that irradiates each light is provided.
[0055]
With this configuration, the light irradiation unit and the light source are remotely installed, and the ornamental illumination light source storage unit 32 is disposed at a position where the light source can be easily replaced, and the replacement mounting structure is simplified, thereby maintaining the light source. Can be easily performed. Note that the position of the ornamental illumination light source storage unit 32 is not limited to the position shown in FIG. 10, but may be changed depending on the purpose.
[0056]
Further, the ornamental illumination light source storage unit 32 does not transmit light of 800 nm or more, for example, has a means such as the heat ray absorption filter 29, or the material of the light transport unit 33 does not transmit light of 800 nm or more. Be composed of materials.
With this configuration, it is possible to realize a plant lighting device that does not include heat rays as ornamental lighting and does not weaken the target plant by thermal radiation.
[0057]
In addition, in this Embodiment, although it is set as the structure which directly illuminates the growth illumination part 4 using the LED light source 26, the light wavelength distribution from the light irradiation part after passing the light conveyance part 33 is the said short wavelength. The ornamental illumination unit of the present embodiment is also applied to the growth illumination unit 4 by selecting materials or configuring the illumination unit so as to be included in the light wavelength regions of the illumination unit 1, the red illumination unit 2, and the far red illumination unit 3. Remote lighting can be realized as well.
[0058]
Embodiment 5 FIG.
Next, a description will be given of a configuration in which the color rendering properties of, for example, flowers and leaves of a target plant such as a flower, a flowering tree, and a tree are partially enhanced.
FIG. 11 is a configuration diagram of a plant lighting device showing Embodiment 5 of the present invention. In the figure, the same or corresponding parts as those in the above embodiment are given the same reference numerals, and description thereof is omitted. The ornamental illumination unit 5 includes a flower color rendering illumination unit 36 that enhances the color rendering property of the flower of the target plant and a leaf color rendering illumination unit 37 that enhances the color rendering property of the leaf color.
[0059]
Next, the operation will be described.
First, as a method for improving the color rendering properties of both parts, a special color rendering index (reference: color properties and technology, 1990, first edition, 3rd edition, Japan Society of Applied Physics, Asakura Shoten, page 108) is shown. The special color rendering index shows a high value, with a maximum value of 100 when the color rendering property of the test illumination light is high for a certain test color among 6 types for calculating the CIE (International Lighting Association) special color rendering index. is there. Table 1 shows the types and names (English) of six test colors for calculating the CIE (International Lighting Association) Special Color Rendering Index (Reference: 1987 Lighting Handbook, Ohmsha, page 556).
[0060]
[Table 1]

[0061]
Therefore, when a target plant is specified, a color name of a main component such as a flower or a leaf in the target plant is predicted as a category color such as red, blue, or green used in normal life. Can do. For example, when the color of a flower is categorized as red, Strong Red of No. 9 in the test colors in Table 1 is the closest color. Therefore, if the flower production illumination unit including light source selection is configured so as to emit illumination light that increases the special color rendering evaluation number of the color in advance, a high color rendering effect can be obtained for the flower.
[0062]
The construction of the illumination unit in this manner also applies to other components of the target plant. For example, if the leaf color rendering illumination unit 37 is configured in the same manner for the leaves, the color rendering effect on the leaf portion is achieved. Can be increased.
[0063]
In addition, a plurality of illumination units that enhance color rendering properties according to a plurality of main components using the special color rendering evaluation number may be provided in the ornamental illumination unit 5. In that case, the lighting part can be selectively turned on and off according to the purpose of viewing the plant, so that the color rendering properties of the target constituent part can be enhanced with respect to other parts of the plant, and the overall effect of viewing Can be improved.
[0064]
Embodiment 6 FIG.
Next, a plant illumination device using a plurality of illumination units for the breeding illumination unit 4 or the ornamental illumination unit 5 will be described.
FIG. 12 is a diagram showing the light emission distribution of the ornamental illumination unit of the plant illumination device showing Embodiment 6 of the present invention. In the figure, solid lines a, b, and c indicate relative light emission wavelength distributions when the ornamental illumination unit 5 includes three illumination units, for example. The gray line e indicates the relative emission wavelength distribution of the D65 light source, which is a JIS common light source. A solid line d is obtained by determining the mixing ratio of the illumination light of each of the plurality of illumination units of the ornamental illumination unit 5 so that the mixed wavelength distribution is closest to the D65 wavelength distribution. The determination of the light mixture ratio includes, for example, a method in which the square of the difference between the D65 wavelength component and the light mixture wavelength component at each wavelength is integrated at a wavelength of 450 nm to 600 nm and minimized.
In addition, the whole block diagram of a plant lighting apparatus is the same as that of FIG.
[0065]
In this way, when the ornamental illumination unit 5 is composed of a plurality of illumination units, illumination light having high color rendering properties as the ornamental illumination unit 5 is determined by illuminating by determining the light mixture ratio of each illumination unit by the method described above. Can be given.
The target light source for approximating the mixed wavelength component may be a JIS standard light source (A light source, C light source) having high color rendering properties in addition to a JIS common light source (D65 light source, D50 light source, D55 light source, D75 light source).
[0066]
In addition, the determination of the light mixture ratio may be performed in combination with each illumination unit of the breeding illumination unit 4 in addition to the illumination unit constituting the ornamental illumination unit 5, and in this case, visible light of 350 to 800 nm is used. Since the wavelength distribution can be made close to the ordinary light source or the standard light source in the wavelength region including the entire region, it is possible to realize illumination light with extremely high color rendering properties. This is shown in FIG.
FIG. 13: is a figure which shows the light emission distribution of the cultivation illumination part of the plant lighting apparatus which shows Embodiment 6 of this invention. In the figure, solid lines a, b, and c are illumination units constituting the ornamental illumination unit 5, gray lines e, f, and g are relative emission wavelength distributions of the illumination units constituting the illumination unit 4, and a solid line h is obtained by the above method, for example. The relative wavelength distribution of the mixed light is shown. The gray line i indicates the relative emission wavelength distribution of the D65 light source, which is a JIS common light source.
[0067]
Embodiment 7 FIG.
Next, a plant lighting device having a schedule function will be described.
FIG. 14 is a configuration diagram of a plant lighting device showing Embodiment 7 of the present invention. In the figure, the same or corresponding parts as those in the above embodiment are given the same reference numerals, and description thereof is omitted. A timer 38 is provided in the lighting circuit unit 6 that lights each of the breeding lighting unit 4 and the ornamental lighting unit 5, and is configured to individually set the lighting schedule of each lighting unit.
[0068]
As a result, for example, it is possible to focus on the illuminating illumination that can hardly expect an ornamental effect at night, and to illuminate the ornamental illumination unit 5 dominantly in the daytime with the aim of improving the ornamental effect. In addition, when the irradiation time of one day necessary for growing the target plant is known, it is possible to set an efficient lighting schedule of the growing lighting unit 4 in advance accordingly.
[0069]
Embodiment 8 FIG.
Next, a plant lighting device having a human body detection function will be described.
FIG. 15 is a configuration diagram of a plant lighting device showing Embodiment 8 of the present invention. In the figure, the same or corresponding parts as those in the above embodiment are given the same reference numerals, and description thereof is omitted. Reference numeral 39 denotes detection means that responds to the approach of a human being, and is configured as a plant lighting device integrated type or a separated type so that at least the ornamental illumination unit 5 is turned off during standby and at least the ornamental illumination unit 5 is turned on during detection. Constitute.
[0070]
Thus, when a person approaches, the ornamental illumination unit 5 is turned on so that the plant can be appreciated, and when there are no more people around, the ornamental illumination unit 5 is extinguished, and it cannot be said that the appreciation is necessarily high. Is configured to light only the growing illumination unit 4 that performs plant morphogenesis and the like.
Therefore, it is possible to realize energy-saving lighting with efficient lighting while realizing breeding and viewing.
[0071]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0072]
At least one illumination among a short wavelength illumination unit that emits light in the light wavelength region 350 to 450 nm, a red illumination unit that emits light in the light wavelength region 600 to 700 nm, and a far red illumination unit that emits light in the light wavelength region 700 to 800 nm And a lighting circuit unit for lighting the breeding illumination unit and the ornamental lighting unit, so that a plant growing effect is produced. At the same time, ornamental lighting that improves the color rendering and production of plants can be performed.
[0073]
In addition, since one or all of the short-wave illumination unit, the red illumination unit, and the far-red illumination unit of the breeding illumination unit, or the ornamental illumination unit is selectively dimmed, the coloration of the surrounding space and Depending on the illuminance, the amount of illumination of the ornamental illumination unit can be adjusted to enhance the color effect and color rendering of flower trees.
[0074]
In addition, since the total irradiation amount of the breeding lighting unit and the irradiation amount of the ornamental lighting unit are set to be not less than the photosynthetic light compensation point intensity peculiar to the target plant and not more than the photosynthetic saturation point intensity, the maximum energy used for plant growth is limited. In addition, energy that does not weaken the plant can be supplied.
[0075]
In addition, the amount of irradiation of the ornamental illumination unit is set to a light-synthesizing light compensation point intensity specific to the target plant, and the growth illumination unit irradiates at least with the red illumination unit, so that the plant can grow without degrading while keeping the plant illumination power low. It becomes possible.
[0076]
The breeding illumination unit or the ornamental illumination unit includes a light guide plate made of a translucent material, a light source disposed on one end surface of the light guide plate, and a housing for housing the light source and the light guide plate. Therefore, the light from the light source is not directly incident on the eyes of the observer, unpleasant glare can be greatly reduced, and an illumination part that is extremely excellent in terms of design can be obtained.
[0077]
The breeding illumination unit includes a light source having a light emitting diode, and the ornamental illumination unit includes a light source having a light bulb having a high color rendering index, a concave reflector mounted on the light source, and a target plant from the light source. And a heat countermeasure unit that reduces heat generated in the direction, and is housed in a housing that can change the irradiation direction of the breeding illumination unit and the ornamental illumination unit, so that the thermal effect on the plant can be reduced. In addition, it is possible to perform spatially efficient plant growth and ornamental lighting that can freely change the irradiation direction according to the shape and form of the plant.
[0078]
The ornamental illumination unit is provided separately from the light source storage unit that stores the light source for illumination, the light emission unit that performs illumination, and connects the light emission unit and the light source storage unit. A translucent light transport unit that transports light from the light source storage unit to the light emitting unit.
Maintenance of the light source is facilitated because the light source housing part has means for making the light of 800 nm or more opaque, or the translucent light carrier part has a light carrying part material for making the light of 800 nm or more opaque. As a result, heat rays are not included as ornamental lighting, and the target plant is not weakened by heat radiation.
[0079]
In addition, the ornamental lighting unit includes a lighting unit having a light emission distribution that increases a special color rendering index for a test color for calculating the international color society special color rendering index with respect to a color of a main component of the target plant. Therefore, the production effect of the main component part of the target plant can be enhanced.
[0080]
In addition, since the ornamental illumination unit is provided with a plurality of the illumination units, and the plurality of illumination units are selectively turned on and off, the color rendering properties of the target component portion can be emphasized with respect to other parts of the plant. The ornamental effect can be improved.
[0081]
Further, the breeding illumination unit or the ornamental illumination unit is provided with a plurality of illumination units, and each of the plurality of illumination units is dimmed, and the mixed light wavelength distribution obtained by mixing is emitted from a JIS standard light source or a JIS regular light source. Since it approximates the wavelength distribution, it is possible to realize ornamental illumination with high color rendering properties.
[0082]
In addition, since the breeding illumination unit or the ornamental illumination unit includes a plurality of illumination units, and includes a timer for individually setting the lighting schedule of the plurality of light portions, it is efficient in advance depending on the purpose of the plant illumination. The lighting schedule of each lighting unit can be set to the energy saving lighting.
[0083]
In addition, a human body detecting means for detecting the approach and presence / absence of a person is provided, and when the approach / detection of a person's approach and presence / absence is detected by the detecting means, the ornamental illumination unit is turned on, and when it is not detected, the ornamental illumination unit is turned off. It is possible to realize energy-saving lighting with efficient lighting according to the presence or absence of a person while realizing appreciation.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram of a plant lighting device showing Embodiment 1 of the present invention.
FIG. 2 is a configuration diagram of an ornamental illumination unit of a plant illumination device showing Embodiment 2 of the present invention.
FIG. 3 is a block diagram of a plant lighting device showing Embodiment 2 of the present invention.
FIG. 4 is a configuration diagram of an illumination unit of a plant illumination device showing Embodiment 2 of the present invention.
FIG. 5 is a configuration diagram of a light guide plate of an illumination unit of a plant illumination device showing Embodiment 2 of the present invention.
FIG. 6 is a configuration diagram of a plant lighting device according to a second embodiment of the present invention.
FIG. 7 is a configuration diagram of an illumination unit of a plant illumination device showing Embodiment 3 of the present invention.
FIG. 8 is a block diagram of a plant lighting device showing Embodiment 3 of the present invention.
FIG. 9 is a configuration diagram of an ornamental illumination unit of a plant illumination device showing Embodiment 4 of the present invention.
FIG. 10 is a configuration diagram of a plant lighting device showing Embodiment 4 of the present invention.
FIG. 11 is a block diagram of a plant lighting device showing Embodiment 5 of the present invention.
FIG. 12 is a diagram showing a light emission distribution of an ornamental lighting unit of a plant lighting device according to Embodiment 6 of the present invention.
FIG. 13 is a diagram showing a light emission distribution of an ornamental illumination unit of a breeding illumination apparatus showing Embodiment 6 of the present invention.
FIG. 14 is a configuration diagram of a plant lighting device according to a seventh embodiment of the present invention.
FIG. 15 is a configuration diagram of a plant lighting device according to an eighth embodiment of the present invention.
FIG. 16 is a perspective view of a conventional plant lighting device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Short wavelength illumination part, 2 Red illumination part, 3 Far red illumination part, 4 Raising illumination part, 5 Ornamental illumination part, 6 Lighting circuit part, 7 LED, 8 LED electrode, 9 LED mounting board, 10 Light guide plate, 11 Light Diffusion dot, 12 light diffusion sheet, 13 surface emitting illumination unit housing, 14 surface cover, 15 surface emitting ornamental illumination unit, 16 LED breeding illumination unit, 17 illumination unit storage unit, 18 struts, 19 plant ornamental pedestal, 20 Pedestal sheet, 21-line light-emitting ornamental illumination unit, 23 ornamental illumination unit light source, 24 concave light source reflector, 25 light source storage unit, 26 LED light source, 27 LED light source fixing plate, 28 heat radiation fin, 29 heat absorption filter, 30 power supply line , 31 Light source storage unit rotation unit, 32 Ornamental illumination light source storage unit, 33 Light transport unit, 34 Light emission unit, 35 Light transport unit storage column, 36 Flower color illumination unit, 37 Leaf performance Lighting unit, 38 timer, 39 human body detection means.

Claims

At least one illumination among a short wavelength illumination unit that emits light in the light wavelength region 350 to 450 nm, a red illumination unit that emits light in the light wavelength region 600 to 700 nm, and a far red illumination unit that emits light in the light wavelength region 700 to 800 nm A nurturing lighting section having a section;
An ornamental illumination unit that emits light in a light wavelength region of 450 to 600 nm;
In the plant lighting device provided with the lighting circuit unit for lighting the breeding lighting unit and the ornamental lighting unit ,
The growing illumination unit includes a light source having a light emitting diode,
The ornamental lighting unit includes a light source having a light bulb having a high color rendering index, a concave reflector mounted on the light source, and a heat countermeasure unit that reduces heat generated from the light source toward the target plant,
A plant lighting device characterized in that the plant lighting device is housed integrally in a housing in which the irradiation direction of the breeding lighting unit and the ornamental lighting unit is variable .

At least one illumination among a short wavelength illumination unit that emits light in the light wavelength region 350 to 450 nm, a red illumination unit that emits light in the light wavelength region 600 to 700 nm, and a far red illumination unit that emits light in the light wavelength region 700 to 800 nm A nurturing lighting section having a section;
An ornamental illumination unit that emits light in a light wavelength region of 450 to 600 nm;
In the plant lighting device provided with a lighting circuit unit for lighting the breeding lighting unit and the ornamental lighting unit,
The ornamental illumination unit includes an illumination unit having a light emission distribution that increases a special color rendering index for a test color for calculating the international color society special color rendering index with respect to a color of a main component of the target plant. A plant lighting device.

The plant illumination device according to claim 2, wherein a plurality of the illumination units are provided in the ornamental illumination unit, and the plurality of illumination units are selectively turned on and off.

The said growth illumination part or the said ornamental illumination part is provided with the some illumination part, The timer which sets individually the lighting schedule of the said some bright part is characterized by the above-mentioned. Plant lighting device.

At least one illumination among a short wavelength illumination unit that emits light in the light wavelength region 350 to 450 nm, a red illumination unit that emits light in the light wavelength region 600 to 700 nm, and a far red illumination unit that emits light in the light wavelength region 700 to 800 nm A nurturing lighting section having a section;
An ornamental illumination unit that emits light in a light wavelength region of 450 to 600 nm;
In the plant lighting device provided with a lighting circuit unit for lighting the breeding lighting unit and the ornamental lighting unit,
The breeding illumination unit or the ornamental illumination unit includes a plurality of illumination units, and each of the plurality of illumination units is dimmed and mixed to obtain a mixed wavelength distribution obtained from a JIS standard light source or a JIS regular light source. A plant lighting device characterized in that

The dimming illumination unit is configured to selectively dimm one or all of the short-wave illumination unit, the red illumination unit, and the far-red illumination unit, or the ornamental illumination unit. The plant lighting device according to any one of 5.

The total irradiation amount of the breeding illumination unit and the irradiation amount of the ornamental illumination unit are set to be not less than the photosynthetic light compensation point intensity peculiar to the target plant and not more than the photosynthetic saturation point intensity. Plant lighting equipment.

The plant illumination according to any one of claims 1 to 6, wherein the amount of irradiation of the ornamental illumination unit is set to a light-synthesizing light compensation point intensity specific to a target plant, and the breeding illumination unit irradiates at least a red illumination unit. apparatus.

The breeding lighting unit or the ornamental lighting unit is
A light guide plate made of a translucent material;
A light source disposed on one end surface of the light guide plate;
The plant illumination device according to claim 1, comprising the light source and a housing that houses the light guide plate.

The ornamental illumination unit is provided separately from the light source storage unit for storing the light source for illumination, the light emission unit for illuminating, and connecting the light emission unit and the light source storage unit, and the light source storage unit A translucent light carrying part for carrying the light from the part to the light emitting part
9. The light source housing part has means for making light of 800 nm or more opaque, or the light-transmissive light carrier part has a light transport part material for making light of 800 nm or more opaque. The plant lighting device according to any one of the above.

A human body detecting means for detecting the approach and presence / absence of a person is provided, the ornamental illumination unit is turned on when the detection means detects the approach and presence / absence of a person, and the ornamental illumination unit is turned off when not detected. Item 11. The plant lighting device according to any one of Items 1 to 10.