Light bulb with upward and downward facing LEDs having heat dissipation
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F21V-029/00
B60Q-001/06
H01R-033/00
F21S-013/10
F21V-003/00
F21V-015/00
F21V-005/00
F21K-099/00
F21V-023/02
F21Y-101/02
F21Y-103/02
출원번호
US-0620158
(2012-09-14)
등록번호
US-8985815
(2015-03-24)
발명자
/ 주소
Chen, Yi-Hung
Chen, Shih-Pin
Huang, Huan-Hsiang
출원인 / 주소
Chicony Power Technology Co., Ltd.
대리인 / 주소
Muncy, Geissler, Olds & Lowe, P.C.
인용정보
피인용 횟수 :
5인용 특허 :
11
초록▼
A light bulb includes a lamp base unit including a base, an electrically insulative hollow column fastened to the base, a heat sink surrounding the electrically insulative hollow column, a light-transmissive shade surrounding the upper part of the metal cylindrical heat sink and a power supply modul
A light bulb includes a lamp base unit including a base, an electrically insulative hollow column fastened to the base, a heat sink surrounding the electrically insulative hollow column, a light-transmissive shade surrounding the upper part of the metal cylindrical heat sink and a power supply module electrically connected to the base, a light source module including a metal holder plate, a first circuit board with upward-facing LEDs, a second circuit board with downward-facing LEDs, a first adapter board, a second adapter board, a positioning block and a heat transfer pad and supported on the heat sink in the light-transmissive shade, and a lamp shell fastened to the metal holder plate and capped on the light-transmissive shade. During operation of the LEDs, waste heat can be quickly dissipated into the outside open air through the mounting lugs of the metal holder plate, the heat transfer pad and the heat sink.
대표청구항▼
1. A light bulb, comprising: a lamp base unit comprising a base electrically connectable to an external lamp socket, an electrically insulative hollow column mounted at said base, a metal cylindrical heat sink surrounding said electrically insulative hollow column, a light-transmissive shade surroun
1. A light bulb, comprising: a lamp base unit comprising a base electrically connectable to an external lamp socket, an electrically insulative hollow column mounted at said base, a metal cylindrical heat sink surrounding said electrically insulative hollow column, a light-transmissive shade surrounding an upper part of said metal cylindrical heat sink, and a power supply module accommodated in said electrically insulative hollow column and electrically connected to said base;a light source module comprising a metal holder plate supported on said electrically insulative hollow column and said light-transmissive shade, a first circuit board attached to a top wall of said metal holder plate and electrically connected to said power supply module, said first circuit board comprising a plurality of upward-facing light-emitting diodes, and a second circuit board attached to a bottom wall of said metal holder plate and electrically connected to said power supply module, said second circuit board comprising a plurality of downward-facing light-emitting diodes; anda light transmitting lamp shell fastened to said metal holder plate and capped on said light-transmissive shade, whereinsaid light source module further comprises an electric connector mounted at said second circuit board and electrically connected to said first circuit board, said electric connector comprising a plurality of upright contact pins, a first adapter board mounted at a top side of said first circuit board and bonded to said upright contact pins of said electric connector and electrically connected to said power supply module, a second adapter board mounted at a bottom side of said second circuit board and bonded to said upright contact pins of said electric connector; said metal holder plate, said first circuit board and said second circuit board each comprise a connector hole for accommodating said electric connector. 2. The light bulb as claimed in claim 1, wherein said electrically insulative hollow column comprises an externally threaded coupling neck disposed at a bottom side thereof; said base comprises an inner thread located on an inner perimeter thereof and threaded onto the externally threaded coupling neck of said electrically insulative hollow column, and an outer thread located on an outer perimeter thereof for threading into an external lamp socket. 3. The light bulb as claimed in claim 1, wherein said electrically insulative hollow column comprises a plurality of hooks equiangularly disposed at a top side thereof; said metal cylindrical heat sink is stopped against a bottom wall of said second circuit board and comprises a plurality of locating notches equiangularly disposed at a top side and respectively forced into engagement with the hooks of said electrically insulative hollow column; said light source module further comprises the first adapter board attached to a top wall of said first circuit board opposite to said metal holder plate, the second adapter board attached to the bottom wall of said second circuit board opposite to said metal holder plate, and a positioning block attached to a bottom wall of said second adapter board, said positioning block comprising a plurality of positioning notches equiangularly spaced around the border of a top side thereof and respectively forced into engagement with the hooks of said electrically insulative hollow column. 4. The light bulb as claimed in claim 3, wherein said second adapter board, said second circuit board, said metal holder plate and said first circuit board each comprise a center opening and a plurality of notches in communication with said center opening; said positioning block further comprises an upright post disposed at a top center thereof and inserted through the center openings of said second adapter board, said second circuit board, said metal holder plate and said first circuit board, and a plurality of ribs spaced around the periphery of said upright post and engaged into the notches that are located on said second adapter board, said second circuit board, said metal holder plate and said first circuit board in communication with the respective said center openings. 5. The light bulb as claimed in claim 3, wherein said light source module further comprises a heat transfer pad sandwiched between said second circuit board and said metal cylindrical heat sink and adapted to transfer waste heat from said second circuit board to said heat sink. 6. The light bulb as claimed in claim 1, wherein said metal cylindrical heat sink further comprises an annular step extending around an outer perimeter thereof, a plurality of longitudinal female studs formed integral with and equiangularly spaced around the outer perimeter and a screw hole located on a top side of each longitudinal female stud; said light-transmissive shade comprises a tapered bottom part fitting the outer perimeter of said metal cylindrical heat sink and supported on said annular step of said metal cylindrical heat sink and a plurality of mating notches equiangularly disposed at an inner perimeter of said tapered bottom part and adapted to accommodate said longitudinal female studs of said metal cylindrical heat sink; said first circuit board, said metal holder plate, said second circuit board and a heat transfer pad each comprise a plurality of through holes; said light source module further comprises a plurality of screws respectively mounted in the through holes of said first circuit board, said metal holder plate, said second circuit board and said heat transfer pad and threaded into the screw holes at said longitudinal female studs of said metal cylindrical heat sink to affix said light source module to said metal cylindrical heat sink. 7. The light bulb as claimed in claim 1, wherein said metal holder plate comprises a plurality of retaining lugs equiangularly spaced around the border area thereof; said light-transmissive shade comprises a plurality of retaining grooves respectively forced into engagement with respective bottom ends of said retaining lugs of said metal holder plate; said light transmitting lamp shell comprises a plurality of retaining grooves respectively forced into engagement with respective top ends of said retaining lugs of said metal holder plate. 8. The light bulb as claimed in claim 1, wherein said metal holder plate comprises a plurality of retaining holes arranged at equiangular intervals; said light transmitting lamp shell comprises a plurality of bottom hooks extended from a bottom side thereof and arranged at equiangular intervals and respectively hooked in the retaining holes of said metal holder plate. 9. The light bulb as claimed in claim 1, wherein said metal holder plate comprises a plurality of through holes; said second circuit board is provided with a plurality of screws that are inserted through the through holes of said metal holder plate and fastened to said first circuit board.
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이 특허에 인용된 특허 (11)
Hu, Wen-Sung, High illumination LED bulb with 360-degree full emission angle.
Johnson Dean A. ; Laubengayer William R. ; Richardson Stephen G., Multiple circuit board assembly having an interconnect mechanism that includes a flex connector.
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