Led luminaire with light control means

Abstract

An LED luminaire is formed such that a plurality of LED chips are disposed three-dimensionally on an MID (molded interconnection device) substrate in a rectangular plate shape, by mounting three LED chips on bottom face of respective dents provided lengthwise and crosswise in one surface of the MID substrate, the LED chips including at least two types diffferent in luminous color, desirably three types of red, blue and green colors. Any optional light distribution characteristic is made thereby easily obtainable depending on a configuration of the substrate, luminaire module can be thinned, and such delicate color difference as white color and day-light color of luminescent lamps is enabled by mixing the luminous colors of the respective LED chips.

What is claimed is:  
     
         1 . An LED luminaire comprising a plurality of LED chips, a substrate on which the plurality of LED chips are mounted, and a light control means provided to the substrate for controlling the distribution of light emitted by the respective LED chips, wherein the light control means includes at least one of a plurality of dents and a plurality of protrusions formed at positions where the LED chips are mounted.  
     
     
         2 . The luminaire according to  claim 1  wherein the substrate comprises a resin molded printed-circuit substrate.  
     
     
         3 . The luminaire according to  claim 1  wherein the plurality of the LED chips include at least two types of the LED chips mutually different in luminous color.  
     
     
         4 . The luminaire according to  claim 1  wherein the substrate is constituted for providing a regularity in the direction of emission to the plurality of the LED chips.  
     
     
         5 . The luminaire according to  claim 1  wherein the substrate is formed in multilayers the central portion of which is raised.  
     
     
         6 . The luminaire according to  claim 1  wherein at least one of the plurality of the dents and a plurality of the protrusions of the light control means are formed on both side surfaces of the substrate.  
     
     
         7 . The luminaire according to  claim 1  wherein the light control means comprises the substrate per se formed with a light transmitting material.  
     
     
         8 . The luminaire according to  claim 7  wherein the LED chips are respectively provided with a power-supplying electrode section made of a transparent conductor.  
     
     
         9 . The luminaire according to  claim 1  wherein the LED chips respectively comprise a P-type semiconductor and an N-type semiconductor which are arranged substantially in vertical with chip-mounting surface of the substrate.  
     
     
         10 . The luminaire according to  claim 1  wherein a fluorescent substance is applied at least to the positions of mounting the LED chips.  
     
     
         11 . The luminaire according to  claim 1  wherein the substrate is provided at least partly with a metal plate as a ground of the plurality of the LED chips, the chips being brought into contact with the metal plate.  
     
     
         12 . The luminaire according to  claim 1  wherein the substrate is provided integrally with a copper-clad metal substrate, the plurality of the LED chips being mounted on copper-clad part formed on one surface of the metal substrate to be a ground, and the light control means comprises circuit elements mounted on the other surface of the metal substrate.