Light source for display

Abstract

PURPOSE: To obtain a light source, which has a long lifetime and excellent luminous power conversion efficiency and from which heat is hardly generated, by integrally constituting the conditions of connection for connection to a power supply, a light-emitting means consisting of a plurality of light-emitting diodes and a drive means receiving power from the connecting means and lighting the light-emitting means. CONSTITUTION: A light source for display is organized of an illuminant 2, in which a large number of light-emitting diodes LEDs are arranged onto the same plane, and a drive circuit 3 being mounted at the back of the illuminant 2 and controlling lighting. A front cover 4 diffusing or converging beams is set up on the illuminant 2 side and a lamp vessel 5 receiving the illuminant 2 and the circuit 3 on the circuit 3 side, and these front cover and lamp vessel are unified by using a screw and a mouthpiece 6 for the vessel 5 is screwed into a lamp-socket not shown. In the constitution, an AC power, a diode, transistors Q 1 , Q 2 , a drive circuit DRC and resistors R 1 , R 2 and the like are incorporated into the drive circuit section 3, each color of the LED is flashed alternately or simultaneously, and the light source is fitted to either of indoor use or outdoor one. COPYRIGHT: (C)1988,JPO&Japio

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Cited By (6)

    Publication numberPublication dateAssigneeTitle
    DE-19734345-A1February 18, 1999Eckhard GerkeElektrische Kerzenleuchte
    FR-2771888-A1June 04, 1999Systemes Et D Audio FrequencesSource lumineuse a diodes electroluminescentes
    JP-2005195761-AJuly 21, 2005Fuji Electric Ind Co Ltd, 不二電機工業株式会社点滅回路内蔵型表示灯
    JP-2006054329-AFebruary 23, 2006Seiko Epson Corp, セイコーエプソン株式会社光源装置、プロジェクタ
    US-5278432-AJanuary 11, 1994Quantam Devices, Inc.Apparatus for providing radiant energy
    WO-9722147-A3August 14, 1997Kurt Blessing, Loptique Ges Fuer LichtsystemeLamp with low current consumption