ILLUMINATION DEVICE

An illumination device (100) is provided, comprising a light source (110), an envelope (120) adapted to at least partially enclose the light source, and a positioning member (130) adapted to position the light source within the envelope. The positioning member can be arranged to assume a first state...

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Bibliographische Detailangaben
1. Verfasser:	KADIJK Simon Eme
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MECHANICAL ENGINEERING NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	An illumination device (100) is provided, comprising a light source (110), an envelope (120) adapted to at least partially enclose the light source, and a positioning member (130) adapted to position the light source within the envelope. The positioning member can be arranged to assume a first state in which the light source is positioned at a first distance (d1) from an inner surface portion (123) of the envelope and a second state in which the light source is positioned at a second distance (d2) from the inner surface portion. The positioning member comprises a shape-memory material adapted to shift the positioning member from the first state to the second state as the shape-memory material is exposed to an external stimulus such as a temperature or magnetic field exceeding a predetermined threshold value. Since the second distance is smaller than the first distance, the light source can be moved towards a wall of the envelope and hence the efficiency of heat dissipated from the light source via the envelope may be increased.