United States Patent [19]
Yamaguchi
[54] LED LAMP AND ARRANGEMENT FOR
MOUNTING LED LAMPS ON A SUBSTRATE
[75] Inventor: Tomoji Yamaguchi, Kyoto, Japan
[73] Assignee: Rohm Co., Ltd., Kyoto, Japan
[21] Appl. No.: 411,541
[22] Filed: Mar. 28,1995
[30] Foreign Application Priority Data
Apr. 4, 1994 [JP] Japan 6-066068
[51] Int. CI.6 F21V 7/00
[52] U.S. CI 362/241; 362/252; 362/800;
362/247; 313/500; 313/512
[58] Field of Search 362/241, 247,
362/248, 249, 252, 237, 800, 311; 313/500,
512
[56] References Cited
U.S. PATENT DOCUMENTS 3,976,877 8/1976 Thillays 313/512
lllllllllllllllllllllllllllllllllllllllllllllllllllllliy
US005564819A [li] Patent Number: 5,564,819 [45] Date of Patent: Oct. 15,1996
4,630,183 12/1986 Fujita 362/800
5,289,082 2/1994 Komoto 362/800
5,404,282 4/1995 Klinke et al 362/800
5,490,048 2/1996 Brassier et al 362/800
FOREIGN PATENT DOCUMENTS
3-51881 3/1991 Japan .
Primary Examiner—James C. Yeung
Assistant Examiner—Thomas M. Sember
Attorney, Agent, or Firm—Brumbaugh, Graves, Donohue &
Raymond
[57] ABSTRACT
An LED lamp has a first lead formed with a reflecting plate at an upper end and a pair of further leads spaced on opposite sides of the first lead, and a plurality of LED chips mounted in linear spaced relation on the reflecting plate. The direction Y of the spacing of the plurality of LED chips is inclined at a predetermined angle a to the spacing direction X of the leads. The reflecting plate has an elongated shape and the plurality of LED chips are spaced in the direction of elongation of the reflecting plate.
6 Claims, 3 Drawing Sheets
