Patent ID: 9234632
Filing Date: 2016-01-12
CPC Classification: F21K,F21Y,H01L

Claim Text:
1. An LED lamp comprising: a plurality of LED modules each including an LED chip; a support member including a single flat support surface and a rear surface opposite to the single flat support surface, the LED modules being directly mounted on the single flat support surface; and a heat dissipation member held in contact with the rear surface of the support member; wherein the LED modules comprise a plurality of kinds of LED modules different from each other in directivity characteristics that represent light intensity distribution with respect to light emission directions, the plurality of kinds of LED modules are mounted on the single flat support surface, the plurality of kinds of LED modules include respective light-emitting surfaces facing in a same direction perpendicular to the single flat support surface, the plurality of kinds of LED modules include a first LED module arranged adjacent to a center of the single flat support surface, the directivity characteristics of the first LED module are such that light intensity in a normal direction of the single flat support surface is relatively high, as compared with the LED modules not adjacent to the center of the single flat support surface, the plurality of LED modules include a second LED module arranged adjacent to an edge of the single flat support surface; and the directivity characteristics of the second LED module are such that light intensity in an outward direction within a plane of the single flat support surface is relatively high, as compared with LED modules not adjacent to the edge of the single flat support surface, the light emitting surfaces of the first LED module and the light emitting surfaces of the second LED module are parallel to the plane of the single flat support surface, and the light intensity of the first LED module in the direction perpendicular to the single flat support surface is greater than the light intensity of the second LED module in the direction perpendicular to the single flat support surface.