JP2022019555A - 面光源型ledデバイス - Google Patents
面光源型ledデバイス Download PDFInfo
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- JP2022019555A JP2022019555A JP2021084714A JP2021084714A JP2022019555A JP 2022019555 A JP2022019555 A JP 2022019555A JP 2021084714 A JP2021084714 A JP 2021084714A JP 2021084714 A JP2021084714 A JP 2021084714A JP 2022019555 A JP2022019555 A JP 2022019555A
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- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
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- F21S43/281—Materials thereof; Structures thereof; Properties thereof; Coatings thereof
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- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
- F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
- F21Y2105/18—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
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Abstract
Description
11 広角度レンズ
12 基板
14、16 高反射率光学構造
21 第1のLEDダイ
22 第2のLEDダイ
23 第3のLEDダイ
24 第4のLEDダイ
25 蛍光材料
31 第1のダイエイリア
32 第2のダイエイリア
33 第3のダイエイリア
34 第4のダイエイリア
35 電極エリア
37 第1の上電極エリア
38 第2の上電極エリア
40a、40b 回路基板
41 第1の下電極エリア
42 第2の下電極エリア
50、50a、50b、60 LEDバーアセンブリ
51、61 第1のLEDバーアセンブリ
52、62 第2のLEDバーアセンブリ
53、63 第3のLEDバーアセンブリ
54、64 第4のLEDバーアセンブリ
55 第5のLEDバーアセンブリ
56 第6のLEDバーアセンブリ
71、71a、71b、71c 正極入力配線
72、72a、72b、72c 負極入力配線
74 コネクタ
76 駆動IC
Claims (13)
- 接続回路が設けられている回路基板と、
前記回路基板と電気的に接続する少なくとも1つの入力電源と、
前記回路基板に接続されていると共に前記少なくとも1つの入力電源と電気的に接続する少なくとも2つのLEDアセンブリと、
を含み、
前記少なくとも2つのLEDアセンブリのそれぞれは、内部において前記回路基板に複数のLEDバーが線状に配置されているように構成され、
前記複数のLEDバーのそれぞれは自体が長尺状構造であり、内部に同じタイプの複数のLEDダイが設けられ、
前記複数のLEDダイ同士の間は0.15mm~2.8mmの等間隔で線状に配置され、
前記複数のLEDバーのそれぞれの隣り合うLEDバー同士の間隔は複数のLEDダイ同士の間の前記等間隔に等しく、
前記複数のLEDバーのそれぞれの自体には、前記複数のLEDバーのそれぞれの横断面の発光角度が大きくなるように広角度レンズが設けられ、
前記広角度レンズは、前記複数のLEDバーのそれぞれの前記複数のLEDダイを覆うように前記複数のLEDバーのそれぞれがモールドパッケージで一体成形されたものであることを特徴とする面光源型LEDデバイス。 - 前記少なくとも2つのLEDバーアセンブリのそれぞれは長尺状構造であり、前記長尺状構造は直線形長尺状構造であることを特徴とする請求項1に記載の面光源型LEDデバイス。
- 前記複数のLEDバーのそれぞれの前記広角度レンズの横断面の構造は2つの弧形を有する上面構造を有し、前記広角度レンズの前記横断面の両側は垂直面構造であり、前記広角度レンズは長尺状構造であることを特徴とする請求項1に記載の面光源型LEDデバイス。
- 前記少なくとも2つのLEDバーアセンブリには複数のLEDバーが配置され、
前記複数のLEDバーアセンブリは搭載面に交錯に配置され、
前記直線形長尺状構造の前記複数のLEDバーアセンブリが前、後、左、右においてそれぞれ交錯に配置されていることによって均一な面光源が形成されていることを特徴とする請求項2に記載の面光源型LEDデバイス。 - 前記少なくとも2つのLEDバーアセンブリのそれぞれの前記長尺状構造は弧形長尺状構造であり、
前記弧形長尺状構造の前記LEDバーアセンブリは2つずつの前記LEDバーアセンブリがペアとなることで異なる弧形長さを有し、
前記異なる弧形長さのサイズに応じて、前記異なる弧形長さを有するペアとなる前記LEDバーアセンブリが搭載面に相互に対称すると共に間隔を置いて交錯に順に配置されていることによって均一な円形面光源が形成されていることを特徴とする請求項2に記載の面光源型LEDデバイス。 - 前記複数のLEDバーのそれぞれの広角度レンズにおける前記2つの弧形を有する上面構造に高反射率光学構造が設けられ、
前記高反射率光学構造は長尺状構造であり、前記広角度レンズにおける前記2つの弧形を有する上面構造の中央の凹み箇所を覆い、
前記高反射率光学構造の長さは前記広角度レンズの長さと同じであり、
前記高反射率光学構造の幅さは前記広角度レンズにおける前記2つの弧形の頂点の間の距離よりも小さい又は前記広角度レンズにおける前記2つの弧形の頂点の間の距離に等しいことを特徴とする請求項3に記載の面光源型LEDデバイス。 - 広角度となると共に前記面光源型LEDデバイスに可撓性を有しさせるように、前記回路基板はフレキシブル回路基板又は軟性回路基板であり、且つ前記複数のLEDバーの全部又は一部は少ない数量の同じ種類の複数のLEDダイで構成された長さが短いLEDバーであることを特徴とする請求項1に記載の面光源型LEDデバイス。
- 前記複数のLEDバーのそれぞれの同じ種類の前記複数のLEDダイは、前記複数のLEDバーのそれぞれの同じ種類の前記複数のLEDダイを同時に点灯させるように全て直列に接続されていることを特徴とする請求項1に記載の面光源型LEDデバイス。
- 前記回路基板において、前記複数のLEDバーのそれぞれは独立の前記接続回路を介して前記入力電源に電気的に接続され、
前記複数のLEDバーのそれぞれは、動的に点灯するようなニーズを満足するように、外部の電源又は信号源に制御されることによって個別に点灯されることを特徴とする請求項1に記載の面光源型LEDデバイス。 - 前記複数のLEDバーにおける各LEDダイと前記広角度レンズとの間に蛍光材料が設けられていることを特徴とする請求項1に記載の面光源型LEDデバイス。
- 前記複数のLEDバーのそれぞれは、前記接続回路における少なくとも1つの電源正極入力配線及び少なくとも1つの電源負極入力配線に電気的に接続され、
前記複数のLEDバーのそれぞれは、正面に複数のダイエリア及び複数の電極エリアが設けられていると共に底面に複数の電極エリアが設けられている基板をそれぞれ含み、
同じ種類の前記複数のLEDダイは前記複数のダイエリアに緊密に線状に配置され、
前記広角度レンズは前記複数のLEDダイ及び前記基板を覆い、
前記広角度レンズは、前記広角度レンズのサイズに応じて加工成形されたモールドのキャビティに対して樹脂を注いで、同じ種類の前記複数のLEDダイが設置されている前記基板をモールドの上型モールドに設置し、モールドを型締めしてベーキングを行うことによって、発光角度が大きくなると共に前記複数のLEDダイを完全に覆う前記広角度レンズを製作するためのモールドパッケージプロセスで作られたものであり、
前記回路基板にはコネクタが設けられ、
前記コネクタは、前記回路基板の前記電源正極入力配線及び前記電源負極入力配線にそれぞれ電気的に接続されていることで外部の入力電源と電気的に接続されていることを特徴とする請求項1に記載の面光源型LEDデバイス。 - 前記複数のLEDバーアセンブリにおける前記複数のLEDバーは二種類の異なる色を発する前記LEDバーであり、
第1の色を発する各前記LEDバーが前記回路基板に線状又は弧状に配置され、第2の色を発する各前記LEDバーが前記回路基板に線状又は弧状に配置され、第1の色を発する各前記LEDバー及び第2の色を発する各前記LEDバーが前記回路基板に相互に平行に配置されている若しくは前記回路基板に相互に交錯で対称するように配置されていることを特徴とする請求項1に記載の面光源型LEDデバイス。 - 前記回路基板に設置されている少なくとも1つのLED駆動ICを更に含み、
前記複数のLEDバーのそれぞれは前記回路基板における前記接続回路を介して前記LED駆動ICに電気的に接続され、
前記LED駆動ICは前記回路基板における前記接続回路を介して前記入力電源に電気的に接続されていることを特徴とする請求項1に記載の面光源型LEDデバイス。
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