Led module

Abstract

An LED module according to the present invention includes an LED unit 2 and a case 1, where the LED unit includes an LED chip 21, and the case 1 includes a main body 11 made of a ceramic material and a pad 12 a on which the LED unit 2 is mounted. The outer edge 121 a of the pad 12 a is positioned inward of the outer edge 2 a of the LED unit 2 as viewed in plan. These arrangements prevent the light emission amount of the LED module A 1 from reducing with time.

1 - 11 . (canceled) 
     
     
         12 . An LED module comprising:
 a base portion;   a first LED unit located on the base portion, the first LED unit including a first end and a second end that are located at opposite sides of the first LED unit as viewed in plan, the first end facing in a first direction, and the second end facing in a second direction that is opposite to the first direction;   a first electrode located at the first direction side relative to the first end of the first LED, and exposed from the base portion;   a first wire bonded to the first LED unit and the first electrode;   a second LED unit located on the base portion, the second LED unit being overlapped with the first LED unit as viewed in a third direction that is perpendicular to the first direction;   a third LED unit located on the base portion, the third LED unit being offset in the second direction from the first end of the first LED unit; and   a second wire bonded to the third LED unit and the first electrode, the second wire including a part that is located between the first LED unit and the second LED unit as viewed in plan.   
     
     
         13 . An LED module of  claim 12 , further comprising:
 a second electrode located at the second direction side relative to the second end of the first LED, and exposed from the base portion; and   a third wire bonded to the first LED unit and the second electrode.   
     
     
         14 . An LED module of  claim 13 , further comprising a fourth wire bonded to the third LED unit and the second electrode, the fourth wire extending to the second direction side from the third LED unit toward the second electrode as viewed in plan. 
     
     
         15 . Aft LED module of  claim 12 , wherein the third LED unit is spaced apart from the first LED unit as viewed in the third direction. 
     
     
         16 . An LED module of  claim 12 , wherein a part of the third LED unit is overlapped with the second LED unit as viewed in the second direction. 
     
     
         17 . An LED module of  claim 12 , wherein the second LED unit includes a first end and a second end that are located at opposite sides of the second LED unit as viewed in plan,
 the first end of the first LED unit is located at a substantially same position as the first end of the second LED unit as viewed in the third direction, and   the second end of the first LED unit is located at a substantially same position as the second end of the second LED unit as viewed in the third direction.   
     
     
         18 . An LED module of  claim 12 , further comprising a surrounding portion located on the base portion, the surrounding portion surrounding the first LED unit, the second LED unit, and the third LED unit as viewed in plan. 
     
     
         19 . An LED module of  claim 18 , wherein the surrounding portion includes a curved surface and a first recess that is recessed from the curved surface as viewed in plan, and the curved surface is spaced apart from each of the first LED unit, the second LED unit, and the third LED unit. 
     
     
         20 . An LED module of  claim 19 , wherein the surrounding portion includes a second recess that is recessed from the curved surface as viewed in plan, and the second recess is spaced apart from the first recess as viewed in plan. 
     
     
         21 . An LED module of  claim 19 , wherein the curved surface of the surrounding portion is made of an insulating material. 
     
     
         22 . An LED module of  claim 12 , wherein each of the first LED unit and the third LED unit has a centerline that extends along the third direction, and the center line of the third LED unit is offset in the second direction from the center line of the first LED unit. 
     
     
         23 . An LED module of  claim 12 , wherein the first LED unit is spaced apart from the first electrode as viewed in plan. 
     
     
         24 . An LED module of  claim 12 , wherein the first LED unit is spaced apart from the second electrode as viewed in plan.