Lamp Device and Luminaire

A lamp device includes a semiconductor light-emitting element. The lamp device includes a housing including a heat conductive part, and the heat conductive part is thermally connected to an external thermal radiator. Heat generated by the semiconductor light-emitting element is conducted to the ther...

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Bibliographische Detailangaben
Hauptverfasser: TAKAHARA YUICHIRO, NAKAJIMA HIROMICHI, MATSUSHITA HIROSHI, KUMASHIRO SHINICHI, OSAWA SHIGERU, MATSUMOTO SHINICHIRO, KAMATA MASAHIKO
Format: Patent
Sprache:eng
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Zusammenfassung:A lamp device includes a semiconductor light-emitting element. The lamp device includes a housing including a heat conductive part, and the heat conductive part is thermally connected to an external thermal radiator. Heat generated by the semiconductor light-emitting element is conducted to the thermal radiator through the heat conductive part. A thermosensor is thermally connected to the heat conductive part. The lamp device includes a lighting circuit to light the semiconductor light-emitting element, and the lighting circuit controls an output of the semiconductor light-emitting element according to detection of the thermosensor.