JP3948384B2

JP3948384B2 - Vehicle interior temperature rise suppression device

Info

Publication number: JP3948384B2
Application number: JP2002292295A
Authority: JP
Inventors: 青木　　新治; 敏文神谷
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2002-10-04
Filing date: 2002-10-04
Publication date: 2007-07-25
Anticipated expiration: 2022-10-04
Also published as: JP2004123011A

Description

【０００１】
【発明の属する技術分野】
本発明は、駐車中に車室内の温度が上昇することを抑制する車室内温度上昇抑制装置に関するものである。
【０００２】
【従来の技術】
従来の車室内温度上昇抑制装置は、太陽電池にて換気扇を稼動させて車室内の熱気を車室外に排出して駐車中に車室内の温度が上昇することを抑制している（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開平５−２４４７３１号公報
【０００４】
【発明が解決しようとする課題】
しかし、一般的に、太陽電池の発電量はエンジンにて駆動される発電機の発電量に比べて小さいので、太陽電池で稼動する換気扇では、車室内の熱気を十分に車室外に排出することが難しい。
【０００５】
因みに、発明者の試算によると、太陽電池で稼動する換気扇では、最大８℃程度しか室内空気温度を低下させることができないので、室内空気温度が５０℃程度になるような夏場の炎天下においては、特許文献１に記載の発明では、駐車時に室内空気温度を十分に低下させることが難しい。
【０００６】
また、特許文献１に記載の発明では、太陽電池にて換気扇を稼動させて車室内の熱気を車室外に排出するのみであるので、ガラスを透過して車室内に注がれる日射により加熱されたシート、計器盤及び内壁（内装）等の比較的に熱容量が大きい部材からの輻射熱等により、室内空気の温度が再び上昇してしまうおそれが高く、駐車中に車室内の温度が上昇することを抑制できない。
【０００７】
本発明は、上記点に鑑み、第１には、従来と異なる新規な車室内温度上昇抑制装置を提供し、第２には、駐車中に車室内の温度が上昇することを抑制することを目的とする。
【０００８】
【課題を解決するための手段】
本発明は、上記目的を達成するために、請求項１に記載の発明では、ガラスを透過して車室内に注がれる日射の量を低減する日射低減手段（１）と、冷凍機によって空気を冷却し、冷凍機にて冷却された空気を車室内に吹き出す車両用空調装置とを有し、車両が駐車中であるか否かを判定し、駐車中には、少なくとも日射が当たる側の日射低減手段（１）を作動させて車室内に注がれる日射量を低減し、車両に設けられたドアノブ又はアクセサリースイッチを乗員が操作したときに、冷凍機を稼動させ、冷凍機にて冷却された空気で車室内を換気することを特徴とする。
【０００９】
これにより、日射低減手段（１）を作動させるに必要な電力の消費が増大することを抑制しつつ、車室内に注がれる日射量、つまり日射による熱負荷量を効率的に低減することができる。
【００１０】
請求項２に記載の発明では、ガラスに電圧を印加することにより透光率を変化させてガラスを透過して車室内に注がれる日射の量を低減する日射低減手段（１）と、冷凍機によって空気を冷却し、冷凍機にて冷却された空気を車室内に吹き出す車両用空調装置とを有し、車両が駐車中であるか否かを判定し、少なくとも駐車中には、日射量が大きい部位の透光率が日射量が小さい部位の透光率より小さくなるように日射低減手段（１）を作動させ、車両に設けられたドアノブ又はアクセサリースイッチを乗員が操作したときに、冷凍機を稼動させ、冷凍機にて冷却された空気で車室内を換気することを特徴とする。
【００１１】
これにより、日射低減手段（１）を作動させるに必要な電力の消費が増大することを抑制しつつ、車室内に注がれる日射量、つまり日射による熱負荷量を効率的に低減することができる。
【００１２】
請求項３に記載の発明では、ガラスを透過して車室内に注がれる日射の量を低減する日射低減手段（１）と、冷凍機によって空気を冷却し、冷凍機にて冷却された空気を車室内に吹き出す車両用空調装置とを有し、車両が駐車中であるか否かを判定し、駐車中には、少なくとも運転席側の窓ガラスに設けられた日射低減手段（１）を作動させて車室内に注がれる日射量を低減し、車両に設けられたドアノブ又はアクセサリースイッチを乗員が操作したときに、冷凍機を稼動させ、冷凍機にて冷却された空気で車室内を換気することを特徴とする。
【００１３】
これにより、日射低減手段（１）を作動させるに必要な電力の消費が増大することを抑制しつつ、車室内に注がれる日射量、つまり日射による熱負荷量を効率的に低減することができる。
【００１４】
請求項４に記載の発明では、車両が駐車している場合において、車室内温度が所定温度以上となったときに、車室内を換気することを特徴とするものである。
【００１５】
請求項５に記載の発明では、車両に注がれる日射量が所定値以上となったときに、車室内を換気することを特徴とするものである。
【００１６】
請求項６に記載の発明では、車室外温度が所定値以上となったときに、車室内を換気することを特徴とするものである。
【００１７】
請求項７に記載の発明では、少なくとも日射が当たる部位に到達する風量がその他の部位より大きくなるように車室内を換気することを特徴とするものである。
【００１８】
請求項８に記載の発明では、車室内壁面から空気を吹き出すことにより車室内を換気することを特徴とするものである。
【００２０】
因みに、上記各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示す一例である。
【００２１】
【発明の実施の形態】
本実施形態は、本発明に係る車室内温度上昇抑制装置を、いわゆるセダン型の車両に適用したものであって、図１は車室内構造を示す説明図であり、図２、３は車両空調装置の構造を示す説明図である。
【００２２】
フロントガラス、リアガラス及びドア窓に設けられた窓ガラス等の透光性を有する壁部材には、図１に示すように、ガラスに電圧を印加することにより透光率を変化させることができる調光ガラス１が用いられており、この調光ガラス１により車室内に注がれる日射の量を低減する日射低減手段が構成されている。
【００２３】
車両用空調装置は、室内に吹き出す空気の温度を調節して室内空気の調和を図るもので、本実施形態では、主に前席側空間の空調を行う前席側空調ユニット２（図２参照）、主に後席側空間の空調を行う後席側ユニット３（図３参照）、車室内前方側に配置されたシート４（図２参照）の表皮（表面）から空気を吹き出す前席用シート空調ユニット５（図２参照）、及び車室内後方側に配置されたシート６（図３参照）の表皮から空気を吹き出す後席用シート空調ユニット７（図３参照）等から構成されている。
【００２４】
なお、表皮とは表面に配置された皮状のものであり、天然皮革のみを意味するものではない。
【００２５】
そして、前席側空調ユニット２及び後席側ユニット３には、室内に吹き出す空気を冷却する空気冷却手段をなす蒸気圧縮式冷凍機の低圧側熱交換器２ａ、３ａ、低圧側熱交換器２ａ、３ａの空気流れ下流側に配置されて室内に吹き出す空気を加熱するヒータ２ｂ、３ｂ、及び送風機２ｃ、３ｃが収納されている。
【００２６】
また、図２中、フィルム式のドア２ｄ、２ｅは、空気の流通状態を制御する流体通路制御手段をなすもので、ドア２ｄはヒータ２ｂを迂回して流れる冷風通路の連通状態を制御し、ドア２ｅは低圧側熱交換器２ａを流れる温風通路の連通状態を制御する。
【００２７】
なお、図３に示す後席側ユニット３では、ドア２ｄ、２ｅに相当する流体通路制御手段は省略されている。
【００２８】
前席用シート空調ユニット５は、図２に示すように、シート下方側に配置された送風機５ａにて前席側空調ユニット２によって温度が調節された空気を導入してシート４の表皮から空気を吹き出すものであり、後席用シート空調ユニット７も前席用シート空調ユニット５と同様に（図３参照）、シート下方側に配置された送風機７ａにて後席側ユニット３によって温度が調節された空気を導入してシート４の表皮から空気を吹き出す。
【００２９】
なお、図２に示す前席用シート空調ユニット５では、前席側空調ユニット２に設けられたエアミックスドア５ｂにより冷風と温風との混合割合を調節してシートから吹き出す空気の温度を調節しているが、図３に示す後席側ユニット３では、エアミックスドア５ｂに相当する温度調節手段は省略されている。因みに、本実施形態では、トランクルーム側に室内空気を強制的に排出するための排出用送風機８が設けている。
【００３０】
また、本実施形態では、内装用の壁材、つまり天井、ピラー部、座席シート、インストルメントパネル、リアパケットトレイ及びドア部等を、図４に示すように、溶着部の間に三次元的な通気孔９ａ１が設けられた通気立体面構造体をなす３Ｄネット９ａを含む多層構造とすることで、前席側空調ユニット２及び後席空調ユニット３にて送風された空気を、ドア、計器盤及び天井から吹き出させることができるようになっている（図１の楕円斜線部参照）。
【００３１】
因みに、内装用の壁材のうち天井及びピラー部は、外側の金属製ボディ９ｂから順に、ポリエステル及びポリウレタン等の樹脂材からなる断熱層９ｃ、３Ｄネット９ａ及び意匠表皮９ｄからなるもので、内装用の壁材の意匠表皮９ｄは、その内側に塵埃を除去するフィルタが構成されるように帯電ファブリック裏基布材が用いられている。
【００３２】
なお、壁材内の空気通路である通気孔（ダクト）９ａ１を構成するに当たっては、３Ｄネット９ａを溶着して３Ｄネット９ａの一部を溶かして溶着部として壁９ａ２を形成している。
【００３３】
次に、本実施形態の特徴的作動を述べる。
【００３４】
車両が駐車している場合に、例えば、外気温度が２０℃以上、又は車室内に注がれる日射量が１５０Ｗ／ｍ²以上となったときには、少なくとも日射が当たる側の調光ガラス１に電圧を印加して、日射量が大きい部位の透光率が日射量が小さい部位の透光率より小さくなるようにして車室内に注がれる日射を遮って車室内に注がれる日射量を低減する。
【００３５】
因みに、このとき、全ての調光ガラス１に電圧を印加して、日射量が大きい部位の透光率が日射量が小さい部位の透光率より小さくなるようにしてもよいことは言うまでもない。
【００３６】
ところで、図５は車室内に注がれる日射仰角λと透光率との関係を示すグラフであり、図６はガラス種類と日射センサの出力偏差との関係を示すグラフであり、図７は日射仰角と熱負荷量、つまり車室内に供給される熱量との関係を示すグラフであり、図８は日射左右角と熱負荷との関係を示すグラフであり、これらグラフからも明らかなように、少なくともガラスの種類、日射仰角及び日射左右角等を考慮して車室内に注がれる日射量が所定量以下となるように調光ガラス１への印可電圧、つまり透光率を制御する必要がある。
【００３７】
なお、日射仰角とは、図９に示すように、水平面に対する車両の傾斜角を考慮した車両の前後方向を基準とした太陽の方角を示す角度であり、日射左右角は、図１０に示すように、車両前後方向前側を基準として右回りに計った角度を言う。
【００３８】
また、本実施形態において、日射仰角は、図１１に示すように、緯度、経度、太陽軌道、時刻及び車両の進行方向（駐車方向）から演算することができ、緯度、経度、駐車位置等はＧＰＳ（ＧｌｏｂａｌＰｏｓｉｔｉｏｎｉｎｇＳｙｓｔｅｍ）により検出し、駐車方向は走行時のジャイロ又はＧＰＳの出力から算出するとともに、予めカーナビゲーションシステムに記憶されている地図情報及び日射センサにより検出される車室内に直達する日射量等から求めるが、日射センサを複数配置してその出力差等から日射仰角を求めてもよい。
【００３９】
そして、本実施形態では、前席側空調ユニットを外気導入モードとした状態で調光ガラス１の透光率を低下させて日射を遮ると同時に、両シート空調ユニット５、７の送風機５ａ、７ａを稼動させて車室内を換気する。
【００４０】
なお、本実施形態に係る後席用シート空調ユニット７は内気循環モードのみ可能で外気導入モードを有していないので、後席側には積極的に外気は導入されないが、後席用シート空調ユニット７においても外気導入モードを実行することができる空調装置を用いる場合には、後席用シート空調ユニット７も外気導入モードとして送風機７ａを稼動させることが望ましい。
【００４１】
また、本実施形態では、両シート空調ユニット５、７の送風機５ａ、７ａに加えて、前席側空調ユニット２及び後席側ユニット３の送風機２ｃ、３ｃも稼動させるにより換気能力を高めている。
【００４２】
因みに、本実施形態では、駐車時の送風能力を送風機２ｃは１６０ｍ³／ｈとし、送風機３ｃは８０ｍ³／ｈとし、送風機５ａ、７ａを４０ｍ³／ｈ程度としている。
【００４３】
なお、本実施形態では、車両の始動スイッチ（例えば、イグニッションスイッチ）が投入されている場合には車両が駐車中であると判定し、車両の始動スイッチが投入されていない場合には車両が駐車中以外であると判定する。また、日射量は車両用空調装置が有している日射センサの検出値を用い、外気温度は車両用空調装置が有している外気温度センサの検出値を用いる。
【００４４】
また、図１２は上記作動（Ｓ１２〜Ｓ１５）を含む空調装置示すフローチャートであり、通常空調運転時（Ｓ１１）においては、目標吹出温度ＴＡＯを図１３に示すように日射左右角及び日射仰角に基づいて補正する。但し、目標吹出温度ＴＡＯは下記の数式１により決定される空調制御目標温度である。
【００４５】
【数１】
ＴＡＯ＝Ｋｓｅｔ×Ｔｓｅｔ−Ｋｒ×Ｔｒ−Ｋａｍ×Ｔａｍ−Ｋｓ×Ｔｓ＋Ｃ
但しＫｓｅｔ、Ｋｒ、Ｋａｍ、Ｋｓ：制御ゲイン
Ｔｒ：室内温度
Ｔａｍ：室外温度
Ｃ：補正用の定数
次に、本実施形態の作用効果を述べる。
【００４６】
駐車中には、調光ガラス１にて車室内に注がれる日射量を低減するので、シート、計器盤及び内壁（内装）等の比較的に熱容量が大きい部材の温度が上昇することを防止できる。したがって、シートや計器盤等からの輻射熱等により、室内空気の温度が再び上昇してしまうことを抑制できるので、駐車中に車室内の温度が大きく上昇するを防止できる。
【００４７】
延いては、図１４に示すように、早期に車室内の温度を快適な温度まで低下させることができるので、乗員に速やかに快適な空間を提供することができるとともに、車両用空調装置（蒸気圧縮式冷凍機）の消費動力を低減することができる。
【００４８】
また、駐車時に換気を行うので、室内の熱気を室外に排出することができ、早期に車室内の温度を快適な温度まで低下させることができる。
【００４９】
また、駐車時においては、日射が当たる側の窓ガラスの透光率を優先的に低下させるので、調光ガラス１の透光率を変化させるに必要な電力の消費が増大することを抑制しつつ、車室内に注がれる日射量、つまり日射による熱負荷量を効率的に低減することができる。
【００５０】
また、３Ｄネット９ａを用いて内装用の壁部材を構成しているので、３Ｄネット９ａ内に蓄えられた空気により高い断熱能力を確保しつつ、換気等の送風時には、ダクト機能をなす３Ｄネット９ａから車室内に全体に空気を送風できるので、送風効率（換気効率）を向上させつつ、急速冷房運転時に速やかに室内温度を低下させることができ、乗員に快適な空調感を与えることができる。
【００５１】
（その他の実施形態）
上述の実施形態では、調光ガラス１等の日射低減手段にて車室内に注がれる日射を遮ると同時に換気運転を行ったが、本発明はこれに限定されるものではなく、例えば車室内温度が所定温度以上となったとき、車両に注がれる日射量が所定値以上となったとき、及び車室外温度が所定値以上となったときのいずれかが成立したときに換気を行ってもよい。なお、この場合の所定の日射量は駐車を開始した時からの累積日射量とすることが望ましい。
【００５２】
また、上述の実施形態では、両シート空調ユニット５、７の送風機５ａ、７ａに加えて、前席側空調ユニット２及び後席側ユニット３の送風機２ｃ、３ｃも稼動させて換気を行ったが、本発明はこれに限定されるものではなく、いずれか一方のみて換気を行ってもよい。
【００５３】
なお、この場合には、シート空調ユニット５、７の送風機５ａ、７ａにて換気を行うと、少ない能力にて大きな体感効果を得ることができるので、いずれか一方のみて換気を行う場合には、シート空調ユニット５、７の送風機５ａ、７ａを稼動させることが望ましい。
【００５４】
また、駐車時に日射を遮っている際に、車両に設けられた任意のスイッチ（例えば、ドアノブやアクセサリースイッチ等）を乗員が操作したときに、エンジンを始動させて車両用空調装置の冷凍機を稼動させてもよい。これにより、早期に室内温度を低下させることができる。
【００５５】
また、上述の実施形態では、日射低減手段として調光ガラス１を用いたが、本発明はこれに限定されるものではなく、例えばガラスを透過する日射（日光）を遮るカーテン（布）状のもの電動モータにて巻き取り開閉する電動式のサンシェードを用いてもよい。なお、調光ガラスとサンシェードとを組み合わせても良いことは言うまでもない。
【００５６】
また、日射仰角を算出するにあっては、図１５に示すように、車両が建物の陰となる場合がある得るので、このような場合は地図情報や日射センサの検出値等を用いて補正してもよい。
【００５７】
また、駐車時に換気を行う際には、少なくとも日射が当たる部位に到達する風量がその他の部位より大きくなるように室内を換気することが望ましい。
【００５８】
また、上述の実施形態では、日射が当たる側の窓ガラスの透光率を優先的に低下させて日射を低減したが、本発明はこれに限定されるものはなく、少なくとも運転席側の窓ガラスを透過する日射量を低減させてもよい。
【図面の簡単な説明】
【図１】本発明の実施形態に係る車室内構造を示す説明図である。
【図２】本発明の実施形態に係る車両空調装置の構造を示す説明図である。
【図３】本発明の実施形態に係る車両空調装置の構造を示す説明図である。
【図４】本発明の実施形態に係る内装の構造を示す説明図である。
【図５】車室内に注がれる日射仰角λと透光率との関係を示すグラフである。
【図６】ガラス種類と日射センサの出力偏差との関係を示すグラフである。
【図７】日射仰角と熱負荷量との関係を示すグラフである。
【図８】日射左右角と熱負荷との関係を示すグラフである。
【図９】日射仰角の定義を示す図である。
【図１０】日射左右角の定義を示す図である。
【図１１】太陽の方角を算出するための説明図である。
【図１２】本発明の実施形態に係る空調装置の作動を示すフローチャートである。
【図１３】目標吹出温度ＴＡＯと日射左右角との関係を示すものである。
【図１４】室内温度の変化を示すグラフである。
【図１５】日射仰角を算出するための説明図である。
【符号の説明】
１…調光ガラス、４、６…シート。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle interior temperature rise suppression device that suppresses an increase in the temperature of a vehicle interior during parking.
[0002]
[Prior art]
Conventional vehicle interior temperature rise suppression devices operate a ventilation fan with a solar cell to discharge hot air inside the vehicle interior to the outside of the vehicle interior and suppress the temperature inside the vehicle compartment from rising during parking (for example, patents) Reference 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-244731 [0004]
[Problems to be solved by the invention]
However, in general, the amount of power generated by a solar cell is smaller than the amount of power generated by a generator driven by an engine. Is difficult.
[0005]
By the way, according to the inventor's estimation, the ventilation fan operated by a solar cell can reduce the indoor air temperature only by a maximum of about 8 ° C. Therefore, under the hot weather in summer when the indoor air temperature becomes about 50 ° C, In the invention described in Patent Document 1, it is difficult to sufficiently reduce the indoor air temperature during parking.
[0006]
Further, in the invention described in Patent Document 1, since only the exhaust fan is operated by the solar cell and the hot air in the passenger compartment is discharged outside the passenger compartment, it is heated by solar radiation that passes through the glass and is poured into the passenger compartment. There is a high risk that the temperature of the indoor air will rise again due to radiant heat from a relatively large heat capacity member such as a seat, instrument panel, and inner wall (interior), and the temperature inside the vehicle will rise while parking Can not be suppressed.
[0007]
In view of the above points, the present invention firstly provides a novel vehicle interior temperature rise suppression device that is different from the conventional one, and secondly, restrains the temperature of the vehicle interior from rising during parking. Objective.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in the invention described in claim 1, the solar radiation reducing means (1) for reducing the amount of solar radiation that passes through the glass and is poured into the passenger compartment, and the refrigerator A vehicle air conditioner that blows out the air cooled by the refrigerator into the passenger compartment, and determines whether the vehicle is parked or not. The solar radiation reduction means (1) is activated to reduce the amount of solar radiation poured into the passenger compartment, and when the passenger operates a door knob or accessory switch provided on the vehicle, the refrigerator is operated and cooled by the refrigerator. The interior of the vehicle is ventilated with the generated air .
[0009]
Thus, it is possible to efficiently reduce the amount of solar radiation poured into the vehicle interior, that is, the amount of heat load due to solar radiation, while suppressing an increase in power consumption required to operate the solar radiation reducing means (1). it can.
[0010]
In the invention described in claim 2, the solar radiation reducing means by changing the light transmittance to reduce the amount of solar radiation that is poured into the passenger compartment through the glass (1) by applying a voltage to the glass, frozen A vehicle air conditioner that cools the air by the machine and blows out the air cooled by the refrigerator into the passenger compartment, and determines whether the vehicle is parked, and at least during parking, the amount of solar radiation When the occupant operates a door knob or an accessory switch provided in the vehicle by operating the solar radiation reducing means (1) so that the transmissivity of a part with a large solar radiation is smaller than the transmissivity of a part with a small amount of solar radiation , machine is running, characterized that you ventilate the vehicle interior in cooled air at the refrigerator.
[0011]
Thus, it is possible to efficiently reduce the amount of solar radiation poured into the vehicle interior, that is, the amount of heat load due to solar radiation, while suppressing an increase in power consumption required to operate the solar radiation reducing means (1). it can.
[0012]
In invention of Claim 3, the solar radiation reduction means (1) which reduces the quantity of the solar radiation which permeate | transmits glass and is poured into a vehicle interior, and air cooled with the refrigerator and the air cooled with the refrigerator A vehicle air conditioner that blows into the passenger compartment, and determines whether or not the vehicle is parked. At the time of parking, at least solar radiation reducing means (1) provided on the window glass on the driver's seat side is provided. Reduces the amount of solar radiation that is poured into the passenger compartment and activates the refrigerator when the occupant operates the door knob or accessory switch provided on the vehicle. It is characterized by ventilation .
[0013]
Thus, it is possible to efficiently reduce the amount of solar radiation poured into the vehicle interior, that is, the amount of heat load due to solar radiation, while suppressing an increase in power consumption required to operate the solar radiation reducing means (1). it can.
[0014]
In a fourth aspect of the present invention, when the vehicle is parked, the vehicle interior is ventilated when the vehicle interior temperature exceeds a predetermined temperature.
[0015]
The invention according to claim 5 is characterized in that the interior of the vehicle is ventilated when the amount of solar radiation poured into the vehicle exceeds a predetermined value.
[0016]
The invention described in claim 6 is characterized in that the vehicle interior is ventilated when the temperature outside the vehicle compartment exceeds a predetermined value.
[0017]
The invention according to claim 7 is characterized in that the interior of the vehicle is ventilated so that at least the amount of air reaching the part exposed to solar radiation is larger than that of the other part.
[0018]
The invention described in claim 8 is characterized in that the vehicle interior is ventilated by blowing air from the vehicle interior wall surface.
[0020]
Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
In the present embodiment, the vehicle interior temperature rise suppression device according to the present invention is applied to a so-called sedan type vehicle. FIG. 1 is an explanatory view showing the vehicle interior structure, and FIGS. It is explanatory drawing which shows the structure of an apparatus.
[0022]
As shown in FIG. 1, a wall member having translucency such as a window glass provided on a windshield, a rear glass, and a door window can be adjusted to change the transmissivity by applying a voltage to the glass. Optical glass 1 is used, and solar radiation reducing means for reducing the amount of solar radiation poured into the vehicle interior by the light control glass 1 is configured.
[0023]
The vehicle air conditioner adjusts the temperature of the air blown into the room to harmonize the room air. In this embodiment, the front seat side air conditioning unit 2 that mainly air-conditions the front seat side space (see FIG. 2). ), Mainly for the rear seat unit 3 (see FIG. 3) for air-conditioning the rear seat side space, and for the front seat that blows air from the skin (front surface) of the seat 4 (see FIG. 2) arranged on the front side of the passenger compartment The seat air-conditioning unit 5 (see FIG. 2) and the rear seat air-conditioning unit 7 (see FIG. 3) for blowing air from the skin of the seat 6 (see FIG. 3) arranged on the rear side of the passenger compartment are configured. .
[0024]
In addition, an outer skin is the skin-like thing arrange | positioned on the surface, and does not mean only natural leather.
[0025]
The front seat side air conditioning unit 2 and the rear seat side unit 3 include low pressure side heat exchangers 2a and 3a and low pressure side heat exchangers 2a of vapor compression refrigeration machines that serve as air cooling means for cooling the air blown into the room. The heaters 2b and 3b and the blowers 2c and 3c, which are disposed on the downstream side of the air flow 3a and heat the air blown into the room, are housed.
[0026]
Further, in FIG. 2, film-type doors 2d and 2e constitute fluid passage control means for controlling the air circulation state, and the door 2d controls the communication state of the cold air passage that flows around the heater 2b. The door 2e controls the communication state of the hot air passage flowing through the low-pressure side heat exchanger 2a.
[0027]
In the rear seat side unit 3 shown in FIG. 3, the fluid passage control means corresponding to the doors 2d and 2e is omitted.
[0028]
As shown in FIG. 2, the front seat air conditioning unit 5 introduces air whose temperature has been adjusted by the front seat air conditioning unit 2 by a blower 5 a disposed on the lower side of the seat, and then air from the skin of the seat 4. As with the front seat air conditioning unit 5 (see FIG. 3), the temperature of the rear seat air conditioning unit 7 is adjusted by the rear seat side unit 3 with a blower 7a disposed below the seat. Introduced air is blown out from the skin of the sheet 4.
[0029]
In the front seat air conditioning unit 5 shown in FIG. 2, the temperature of the air blown from the seat is adjusted by adjusting the mixing ratio of the cold air and the hot air by the air mix door 5b provided in the front seat air conditioning unit 2. However, in the rear seat side unit 3 shown in FIG. 3, the temperature adjusting means corresponding to the air mix door 5b is omitted. Incidentally, in this embodiment, the exhaust fan 8 for forcibly exhausting indoor air is provided in the trunk room side.
[0030]
Further, in this embodiment, the interior wall material, that is, the ceiling, the pillar portion, the seat, the instrument panel, the rear packet tray, the door portion, and the like are three-dimensionally disposed between the welded portions as shown in FIG. The air blown by the front seat side air conditioning unit 2 and the rear seat air conditioning unit 3 is made into a multi-layered structure including a 3D net 9a forming a three-dimensional ventilation structure provided with a simple ventilation hole 9a1. It can be blown out from the board and the ceiling (refer to the elliptical shaded area in FIG. 1).
[0031]
Incidentally, the ceiling and pillar portion of the interior wall material are composed of a heat insulating layer 9c, a 3D net 9a and a design skin 9d made of a resin material such as polyester and polyurethane in order from the outer metal body 9b. The design skin 9d of the wall material for use is made of a charged fabric back base fabric material so that a filter for removing dust is formed inside.
[0032]
In constructing the air hole (duct) 9a1 which is an air passage in the wall material, the 3D net 9a is welded and a part of the 3D net 9a is melted to form the wall 9a2 as a welded portion.
[0033]
Next, the characteristic operation of this embodiment will be described.
[0034]
When the vehicle is parked, for example, when the outside air temperature is 20 ° C. or higher, or the amount of solar radiation poured into the passenger compartment is 150 W / m ² or higher, voltage is applied to the light control glass 1 on the side where at least solar radiation is applied. To reduce the amount of solar radiation that is poured into the passenger compartment by blocking the solar radiation that is poured into the passenger compartment so that the transmittance of the portion with a large amount of solar radiation is smaller than the transmittance of the portion with a small amount of solar radiation. To do.
[0035]
Incidentally, at this time, it goes without saying that a voltage may be applied to all the light control glasses 1 so that the transmissivity of the part where the amount of solar radiation is large is smaller than the transmissivity of the part where the amount of solar radiation is small.
[0036]
Incidentally, FIG. 5 is a graph showing the relationship between the solar elevation angle λ poured into the passenger compartment and the transmissivity, FIG. 6 is a graph showing the relationship between the glass type and the output deviation of the solar sensor, and FIG. FIG. 8 is a graph showing the relationship between the solar elevation angle and the amount of heat load, that is, the amount of heat supplied to the passenger compartment, and FIG. 8 is a graph showing the relationship between the solar radiation left-right angle and the heat load, as is apparent from these graphs. In addition, it is necessary to control the voltage applied to the light control glass 1, that is, the transmissivity, so that the amount of solar radiation poured into the passenger compartment is not more than a predetermined amount in consideration of at least the type of glass, the solar elevation angle, and the horizontal angle of solar radiation. There is.
[0037]
As shown in FIG. 9, the solar radiation elevation angle is an angle indicating the direction of the sun with respect to the vehicle front-rear direction in consideration of the inclination angle of the vehicle with respect to the horizontal plane, and the solar radiation left-right angle is as shown in FIG. The angle measured clockwise with respect to the front side in the vehicle longitudinal direction.
[0038]
In the present embodiment, as shown in FIG. 11, the solar elevation angle can be calculated from latitude, longitude, solar trajectory, time, and vehicle traveling direction (parking direction), and the latitude, longitude, parking position, etc. Detected by GPS (Global Positioning System), the parking direction is calculated from the gyro or GPS output at the time of traveling, and the solar radiation directly reaching the vehicle interior detected by the map information and the solar radiation sensor stored in advance in the car navigation system The amount of solar radiation may be calculated, but a plurality of solar radiation sensors may be arranged to determine the solar elevation angle from the output difference.
[0039]
And in this embodiment, the light-transmitting rate of the light control glass 1 is reduced in the state which made the front seat side air-conditioning unit the outside air introduction mode, and the solar blower 5a, 7a of both sheet | seat air-conditioning units 5 and 7 is interrupted simultaneously. Operate to ventilate the passenger compartment.
[0040]
Note that the rear seat air conditioning unit 7 according to the present embodiment is capable of only the inside air circulation mode and does not have the outside air introduction mode. When an air conditioner capable of executing the outside air introduction mode is used also in the unit 7, it is desirable that the rear seat air conditioning unit 7 also operates the blower 7a in the outside air introduction mode.
[0041]
Moreover, in this embodiment, in addition to the air blowers 5a and 7a of the both seat air conditioning units 5 and 7, the front seat side air conditioning unit 2 and the blower 2c and 3c of the rear seat side unit 3 are also operated to increase the ventilation capacity. .
[0042]
Incidentally, in this embodiment, the ventilation capacity at the time of parking is set to 160 m ³ / h for the blower 2c, 80 m ³ / h for the blower 3c, and about 40 m ³ / h for the blowers 5a and 7a.
[0043]
In the present embodiment, it is determined that the vehicle is parked when a vehicle start switch (for example, an ignition switch) is turned on, and the vehicle is parked when the vehicle start switch is not turned on. Determined to be other than medium. The amount of solar radiation uses the detection value of the solar radiation sensor which the vehicle air conditioner has, and the outside air temperature uses the detection value of the outside air temperature sensor which the vehicle air conditioner has.
[0044]
FIG. 12 is a flowchart showing the air conditioner including the above-described operation (S12 to S15). In the normal air conditioning operation (S11), the target blowing temperature TAO is based on the solar radiation left and right angles and the solar elevation angle as shown in FIG. To correct. However, the target blowing temperature TAO is an air conditioning control target temperature determined by the following formula 1.
[0045]
[Expression 1]
TAO = Kset * Tset-Kr * Tr-Kam * Tam-Ks * Ts + C
However, Kset, Kr, Kam, Ks: Control gain Tr: Indoor temperature Tam: Outdoor temperature C: Correction constant Next, operational effects of this embodiment will be described.
[0046]
During parking, the amount of solar radiation poured into the passenger compartment with the light control glass 1 is reduced, preventing the temperature of members with relatively large heat capacities such as seats, instrument panels and inner walls (interior) from rising. it can. Accordingly, it is possible to prevent the temperature of the indoor air from rising again due to radiant heat from the seats, the instrument panel, and the like, so that it is possible to prevent the temperature of the vehicle interior from significantly increasing during parking.
[0047]
As shown in FIG. 14, since the temperature in the passenger compartment can be lowered to a comfortable temperature at an early stage, a comfortable space can be quickly provided to the occupant and a vehicle air conditioner (steam The power consumption of the compression refrigerator) can be reduced.
[0048]
Further, since ventilation is performed during parking, the indoor hot air can be discharged to the outside of the room, and the temperature in the passenger compartment can be lowered to a comfortable temperature at an early stage.
[0049]
In addition, when parking, the light transmittance of the window glass on the side where the solar radiation hits is preferentially reduced, so that it is possible to suppress an increase in power consumption required to change the light transmittance of the light control glass 1. However, it is possible to efficiently reduce the amount of solar radiation poured into the passenger compartment, that is, the amount of heat load due to solar radiation.
[0050]
Moreover, since the wall member for interiors is configured using the 3D net 9a, the 3D net that functions as a duct when blowing air such as ventilation while ensuring high heat insulation capability by the air stored in the 3D net 9a. Since air can be blown to the entire vehicle interior from 9a, the indoor temperature can be quickly lowered during rapid cooling operation while improving the blowing efficiency (ventilation efficiency), and a comfortable air-conditioning feeling can be given to the occupant. .
[0051]
(Other embodiments)
In the above-described embodiment, the ventilation operation is performed at the same time as the sunlight poured into the vehicle interior is blocked by the solar radiation reducing means such as the light control glass 1, but the present invention is not limited to this. Ventilate when the temperature rises above the specified temperature, when the amount of solar radiation poured into the vehicle exceeds the specified value, or when the outside temperature exceeds the specified value. Also good. Note that the predetermined amount of solar radiation in this case is desirably the cumulative amount of solar radiation from the start of parking.
[0052]
In the above-described embodiment, ventilation is performed by operating the front seat side air conditioning unit 2 and the rear seat side unit 3 blowers 2c and 3c in addition to the blowers 5a and 7a of the both seat air conditioning units 5 and 7. However, the present invention is not limited to this, and ventilation may be performed with only one of them.
[0053]
In this case, if ventilation is performed with the blowers 5a and 7a of the seat air conditioning units 5 and 7, a large bodily sensation effect can be obtained with a small capacity. It is desirable to operate the blowers 5a and 7a of the seat air conditioning units 5 and 7.
[0054]
In addition, when the occupant operates any switch (such as a door knob or accessory switch) provided on the vehicle while blocking solar radiation when parking, the engine is started and the refrigerator of the vehicle air conditioner is turned on. It may be operated. Thereby, the room temperature can be lowered early.
[0055]
Moreover, although the light control glass 1 was used as a solar radiation reduction means in the above-mentioned embodiment, this invention is not limited to this, For example, the curtain (cloth) shape which shields the solar radiation (sunlight) which permeate | transmits glass. An electric sunshade that winds and opens with an electric motor may be used. Needless to say, the light control glass and the sunshade may be combined.
[0056]
Further, in calculating the solar elevation angle, the vehicle may be behind the building as shown in FIG. 15. In such a case, correction is made using map information, detection value of the solar sensor, etc. May be.
[0057]
In addition, when ventilating at the time of parking, it is desirable to ventilate the room so that at least the amount of air reaching the part exposed to solar radiation is larger than that of other parts.
[0058]
Further, in the above-described embodiment, the solar radiation is reduced by preferentially reducing the transmissivity of the window glass on the side where the solar radiation hits, but the present invention is not limited to this, and at least the window on the driver's seat side You may reduce the amount of solar radiation which permeate | transmits glass.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a vehicle interior structure according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a structure of a vehicle air conditioner according to an embodiment of the present invention.
FIG. 3 is an explanatory diagram showing the structure of a vehicle air conditioner according to an embodiment of the present invention.
FIG. 4 is an explanatory view showing the structure of the interior according to the embodiment of the present invention.
FIG. 5 is a graph showing the relationship between the solar elevation angle λ and the transmissivity poured into the passenger compartment.
FIG. 6 is a graph showing the relationship between the glass type and the output deviation of the solar radiation sensor.
FIG. 7 is a graph showing the relationship between solar elevation angle and thermal load.
FIG. 8 is a graph showing the relationship between solar radiation left and right angles and thermal load.
FIG. 9 is a diagram showing the definition of the solar elevation angle.
FIG. 10 is a diagram showing the definition of solar radiation left and right angles.
FIG. 11 is an explanatory diagram for calculating the direction of the sun.
FIG. 12 is a flowchart showing the operation of the air conditioner according to the embodiment of the present invention.
FIG. 13 shows a relationship between a target blowing temperature TAO and solar radiation right and left angles.
FIG. 14 is a graph showing changes in room temperature.
FIG. 15 is an explanatory diagram for calculating a solar elevation angle.
[Explanation of symbols]
1 ... light control glass, 4, 6 ... sheet.

Claims

Solar radiation reduction means (1) for reducing the amount of solar radiation that passes through the glass and is poured into the vehicle interior ;
A vehicle air conditioner that cools the air with a refrigerator and blows out the air cooled by the refrigerator into the vehicle interior ;
It is determined whether or not the vehicle is parked, and during the parking, the solar radiation reducing means (1) on the side where the solar radiation hits is operated to reduce the amount of solar radiation poured into the vehicle interior ,
A vehicle interior temperature rise suppression device characterized in that when a passenger operates a door knob or an accessory switch provided in a vehicle, the refrigerator is operated and the vehicle interior is ventilated with air cooled by the refrigerator. .

Solar radiation reducing means (1) for reducing the amount of solar radiation that is transmitted through the glass and applied to the passenger compartment by applying a voltage to the glass ;
A vehicle air conditioner that cools the air with a refrigerator and blows out the air cooled by the refrigerator into the vehicle interior ;
It is determined whether or not the vehicle is parked, and at least during parking, the solar radiation reducing means (1) is such that the transmissivity of the part with the large solar radiation amount is smaller than the transmissivity of the part with the small solar radiation amount. activates the,
When the door knob or accessory switch provided in the vehicle occupant has operated, the refrigerator is running, the passenger compartment temperature increase suppressing characterized that you ventilate the vehicle interior with cooled air in said refrigerator apparatus.

Solar radiation reduction means (1) for reducing the amount of solar radiation that passes through the glass and is poured into the vehicle interior ;
A vehicle air conditioner that cools the air with a refrigerator and blows out the air cooled by the refrigerator into the vehicle interior ;
It is determined whether or not the vehicle is parked. During parking, at least the solar radiation reducing means (1) provided on the driver's seat side window glass is operated to reduce the amount of solar radiation poured into the vehicle interior. And
A vehicle interior temperature rise suppression device characterized in that when a passenger operates a door knob or an accessory switch provided in a vehicle, the refrigerator is operated and the vehicle interior is ventilated with air cooled by the refrigerator. .

4. The vehicle interior temperature rise suppression according to claim 1, wherein, when the vehicle is parked, the vehicle interior is ventilated when the vehicle interior temperature exceeds a predetermined temperature. 5. apparatus.

The vehicle interior temperature rise suppression device according to any one of claims 1 to 3, wherein the interior of the vehicle is ventilated when the amount of solar radiation poured into the vehicle exceeds a predetermined value.

The vehicle interior temperature rise suppression device according to any one of claims 1 to 3, wherein the vehicle interior is ventilated when the temperature outside the vehicle compartment exceeds a predetermined value.

The vehicle interior temperature rise suppression device according to any one of claims 4 to 6, wherein the interior of the vehicle is ventilated so that at least the amount of air reaching the site exposed to solar radiation is greater than that of other regions.

The vehicle interior temperature rise suppression device according to any one of claims 4 to 7, wherein the vehicle interior is ventilated by blowing air from a vehicle interior wall surface.