LED SIGNAL LAMP
PROBLEM TO BE SOLVED: To provide an LED signal lamp eliminating loss of light quantity to guided light.SOLUTION: An LED signal lamp 1 comprises an LED 3 to be a light source, and a lens 4 including a plurality of light guide bodies 5 arrayed in a direction orthogonal to an optical axis X of the LED...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an LED signal lamp eliminating loss of light quantity to guided light.SOLUTION: An LED signal lamp 1 comprises an LED 3 to be a light source, and a lens 4 including a plurality of light guide bodies 5 arrayed in a direction orthogonal to an optical axis X of the LED 3. In the LED signal lamp, cutting 6 for collecting light emitted from the LED 3 on a light emission surface 5b of each light guide body 5 of the lens 4 is executed on a light incident surface 5a of each light guide body 5, or cutting for light distribution control (for example, a combination of fish-eye cutting, prism cutting and flute cutting) is executed on the light emission surface 5b of each light guide body 5 of the lens 4.
【課題】導光に対して光量のロスを無くしたLED信号灯を提供すること。【解決手段】光源であるLED3と、該LED3の光軸Xに対して直交する方向に配列された複数の導光体5を備えるレンズ4とを含んで構成されるLED信号灯1において、前記LED3から出射する光を前記レンズ4の各導光体5の光出射面5bに集光させるカット6を各導光体5の光入射面5aに施す。又、前記レンズ4の各導光体5の光出射面5bに、配光制御のためのカット(例えば、魚眼カット、プリズムカット、フルートカットを組み合わせたもの)を施す。【選択図】図1 |
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