LED FLASH DEVICE AND ELECTRONIC EQUIPMENT

PROBLEM TO BE SOLVED: To provide an LED flash device suitable for miniaturization, which uses a lithium ion capacitor, and to provide electronic equipment on which the LED flash device is mounted. SOLUTION: The LED flash device includes: an LED as a light source; the lithium ion capacitor for drivin...

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Bibliographische Detailangaben
1. Verfasser:	TSUBATA TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an LED flash device suitable for miniaturization, which uses a lithium ion capacitor, and to provide electronic equipment on which the LED flash device is mounted. SOLUTION: The LED flash device includes: an LED as a light source; the lithium ion capacitor for driving the LED; a nonaqueous-system secondary battery for charging the lithium ion capacitor; a controller that controls the light emitting state of the LED including flash pulse width; and a first switching element that turns on/off current flowing in the LED according to control by the controller. Then, the lithium ion capacitor comprises at least two or more cells, and the LED flash device includes: a monitor circuit for monitoring full charge voltage of each cell when charging the cells; and a second switching element capable of opening and closing connection of the cells. COPYRIGHT: (C)2011,JPO&INPIT