LIGHT SOURCE DEVICE AND LIGHTING DEVICE

PROBLEM TO BE SOLVED: To provide a light source device capable of preventing cracks on a phosphor layer even if radiating exciting light from a solid light source to the phosphor layer, in the light source device having the solid light source for emitting light having a designated wavelength among w...

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Bibliographische Detailangaben
1. Verfasser:	OWADA SOJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES SEMICONDUCTOR DEVICES STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light source device capable of preventing cracks on a phosphor layer even if radiating exciting light from a solid light source to the phosphor layer, in the light source device having the solid light source for emitting light having a designated wavelength among wavelength ranges from ultraviolet light to visible light as exciting light, the phosphor layer having a first face and a second face opposite to the first face and including at least a kind of phosphors for emitting fluorescence having a wavelength longer than that of the exciting light by being excited by receiving the exciting light to the first face, and a board arranged at a second face side of the phosphor layer.SOLUTION: A transparent layer 11 is arranged on a first face S1 of the phosphor layer 2 in order to effectively restrain a temperature rise on an excited light radiation section of the phosphor layer 2. Here, the transparent layer 11 is formed of a transparent material to the exciting light from the solid light source 5 and the fluorescence from the phosphor layer 2.