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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Plane-shaped lighting device and a display using such a device

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F21V-007/00   
미국특허분류(USC) 313/512 ; 313/113 ; 362/027 ; 362/031 ; 362/800 ; 362/812
출원번호 US-0652304 (1996-05-23)
우선권정보 JP-0123878 (1995-05-23)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 120  인용 특허 : 0
초록
▼

A plane-shaped lighting device has a light-directing plate and a light source that is placed in contact with or in the proximity of the light-incident surface of the light-directing plate, and the light source is constituted of a plurality of LED lamps each of which has an LED chip for emitting light and a semispherical lens for directing the light from the LED chip into the light-directing plate. Here, the distance from the LED chip to the top of the semispherical lens is set to be 1.8 times as long as the radius of curvature of the semispherical lens. ...

대표
청구항
▼

[ What is claimed is:] [14.] A display device comprising:a plane-shaped lighting device having a light source which emits light rays at a plurality of colors and a light-directing plate that has light-takeoff bodies installed on a plane section thereof;a patterned display board that is placed on a first side of the plane section of the plane-shaped lighting device; anda reflection plate that is placed on a second side, opposite the first side, of the plane section,wherein: the patterned display board has light-transmitting sections for allowing light to ...

이 특허를 인용한 특허 피인용횟수: 120

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