{
  "timeline": [
    {
      "date": "1915/4",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "小糸源六郎商店創業（東京・京橋）、鉄道信号灯用フレネルレンズの販売開始",
      "detail": "",
      "significance": "小糸製作所の起源。光学・照明分野の出発点",
      "source": "有価証券報告書"
    },
    {
      "date": "1935/2",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "品川工場開設",
      "detail": "",
      "significance": "自社製造体制の出発点",
      "source": "有価証券報告書"
    },
    {
      "date": "1936/4",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "株式会社小糸製作所設立、資本金250万円",
      "detail": "",
      "significance": "法人化と現法人格の確立",
      "source": "有価証券報告書",
      "amount": "資本金250万円"
    },
    {
      "date": "1943/4",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "静岡工場開設",
      "detail": "",
      "significance": "主力生産拠点の整備",
      "source": "有価証券報告書"
    },
    {
      "date": "1949/5",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "株式を東京、大阪両証券取引所に上場",
      "detail": "",
      "significance": "戦後の資本市場アクセス確保",
      "source": "有価証券報告書"
    },
    {
      "date": "1957/8",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "小糸電機株式会社設立",
      "detail": "",
      "significance": "事業の専業化（後に吸収合併）",
      "source": "有価証券報告書"
    },
    {
      "date": "1957/10",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "オールグラス・シールドビームヘッドランプ生産・販売開始",
      "detail": "",
      "significance": "自動車ヘッドランプ事業の本格化",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/1",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "小糸電機株式会社を吸収合併",
      "detail": "",
      "significance": "グループ再編",
      "source": "有価証券報告書"
    },
    {
      "date": "1968/8",
      "category": "海外進出",
      "region": "米州",
      "importance": 1,
      "event": "米国イリノイ州にシカゴ事務所開設",
      "detail": "",
      "significance": "北米市場開拓の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1978/7",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "ハロゲンヘッドランプ生産・販売開始",
      "detail": "",
      "significance": "ヘッドランプ高機能化の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1983/4",
      "category": "海外進出",
      "region": "米州",
      "importance": 3,
      "event": "米国イリノイ州にノースアメリカンライティングインク設立",
      "detail": "",
      "significance": "北米現地生産の起点。後の連結子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/8",
      "category": "海外進出",
      "region": "東南アジア",
      "importance": 2,
      "event": "タイ国バンコク市にタイコイトカンパニーリミテッド設立",
      "detail": "",
      "significance": "東南アジア生産拠点の構築",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/4",
      "category": "海外進出",
      "region": "中国",
      "importance": 2,
      "event": "台湾大億交通工業製造股份有限公司へ資本参加",
      "detail": "後に連結子会社化",
      "significance": "台湾市場展開と中国市場接続",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/2",
      "category": "海外進出",
      "region": "中国",
      "importance": 2,
      "event": "中国に上海小糸車灯有限公司設立",
      "detail": "",
      "significance": "中国本土での車灯生産進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/5",
      "category": "海外進出",
      "region": "欧州",
      "importance": 2,
      "event": "英国ブライタックスベガリミテッドへ資本参加",
      "detail": "1998年子会社化、1999年コイトヨーロッパに改称",
      "significance": "欧州拠点の獲得",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/7",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "ディスチャージヘッドランプ生産・販売開始",
      "detail": "",
      "significance": "HID技術の本格製品化",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/4",
      "category": "海外進出",
      "region": "東南アジア",
      "importance": 2,
      "event": "インドにインディアジャパンライティングプライベートリミテッド設立",
      "detail": "",
      "significance": "インド市場進出の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/7",
      "category": "海外進出",
      "region": "中国",
      "importance": 1,
      "event": "韓国インヒライティングへ資本参加",
      "detail": "",
      "significance": "韓国市場接続",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/7",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 1,
      "event": "タイコイトカンパニーリミテッドを子会社化",
      "detail": "",
      "significance": "タイ拠点の連結子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/7",
      "category": "企業買収",
      "region": "欧州",
      "importance": 1,
      "event": "ブライタックスベガリミテッドを子会社化",
      "detail": "",
      "significance": "欧州拠点の連結子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/10",
      "category": "企業買収",
      "region": "米州",
      "importance": 1,
      "event": "ノースアメリカンライティングインクを子会社化",
      "detail": "",
      "significance": "北米拠点の連結子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/3",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "チェコにコイトチェコs.r.o.設立",
      "detail": "",
      "significance": "中欧生産拠点の構築",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/7",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "世界初の水銀フリーディスチャージヘッドランプ生産・販売開始",
      "detail": "",
      "significance": "環境対応HIDの先行投入",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/9",
      "category": "企業買収",
      "region": "中国",
      "importance": 1,
      "event": "中国福州大億灯具工業有限公司を子会社化",
      "detail": "",
      "significance": "中国南部生産拠点の追加",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/11",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "佐賀県に小糸九州株式会社設立",
      "detail": "",
      "significance": "九州生産拠点の整備",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/11",
      "category": "海外進出",
      "region": "中国",
      "importance": 1,
      "event": "中国に広州小糸車灯有限公司設立",
      "detail": "",
      "significance": "中国華南生産拠点の構築",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/5",
      "category": "新規事業",
      "region": "",
      "importance": 3,
      "event": "世界初のLEDヘッドランプ生産・販売開始",
      "detail": "",
      "significance": "LEDヘッドランプの市場立ち上げ。技術リーダーシップを示すマイルストーン",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/7",
      "category": "設備投資|海外進出",
      "region": "米州",
      "importance": 1,
      "event": "ノースアメリカンライティングインク アラバマ工場開設",
      "detail": "",
      "significance": "北米生産能力の拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/2",
      "category": "組織再編",
      "region": "中国",
      "importance": 1,
      "event": "福州大億灯具工業有限公司を福州小糸大億車灯有限公司に社名変更",
      "detail": "",
      "significance": "中国子会社のブランド統合",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/6",
      "category": "海外進出",
      "region": "東南アジア",
      "importance": 2,
      "event": "インドネシアにPT.インドネシアコイト設立",
      "detail": "",
      "significance": "東南アジア生産拠点の追加",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/8",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "小糸工業の航空機シート事業以外を会社分割でコイト電工に承継、小糸工業をKIホールディングスに改称",
      "detail": "",
      "significance": "グループ事業ポートフォリオの再編",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/12",
      "category": "海外進出",
      "region": "米州",
      "importance": 2,
      "event": "メキシコにノースアメリカンライティングメキシコ設立",
      "detail": "",
      "significance": "北米生産ネットワークの拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2015/4",
      "category": "経営計画",
      "region": "",
      "importance": 1,
      "event": "創業100周年を迎える",
      "detail": "",
      "significance": "長寿企業としての節目",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/3",
      "category": "設備投資|海外進出",
      "region": "東南アジア",
      "importance": 1,
      "event": "インディアジャパンライティングプライベートリミテッド グジャラート工場開設",
      "detail": "",
      "significance": "インド生産能力拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/8",
      "category": "企業買収",
      "region": "中国",
      "importance": 2,
      "event": "福州小糸大億車灯有限公司を完全子会社化、福州小糸車灯有限公司に改称",
      "detail": "",
      "significance": "中国合弁解消・完全子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/1",
      "category": "企業買収",
      "region": "米州",
      "importance": 3,
      "event": "セプトンテクノロジーズインク等7社を子会社化",
      "detail": "",
      "significance": "LiDAR・センサー領域への戦略的取り込み。次世代照明・ADAS分野の強化",
      "source": "有価証券報告書"
    }
  ]
}