Light emitting device

Abstract

A light emitting device includes at least one light emitting element and at least one light transmissive sealing member. Each of the at least one light emitting element has a bottom surface electrically connected to a conductor wiring and a top surface opposite to the bottom surface in a height direction along a height of the light emitting device. The at least one light transmissive sealing member covers the at least one light emitting element, respectively. Each of the at least one light transmissive sealing member has a projection shape with a height in the height direction and a width in a width direction perpendicular to the height direction. The height is greater than the width. Each of the at least one light transmissive sealing member includes a wavelength conversion member.

What is claimed is: 
     
         1 . A light emitting device comprising:
 at least one light emitting element each having a bottom surface electrically connected to a conductor wiring and a top surface opposite to the bottom surface in a height direction along a height of the light emitting device; and   at least one light transmissive sealing member covering the at least one light emitting element, respectively, each of the at least one light transmissive sealing member having a projection shape with a height in the height direction and a width in a width direction perpendicular to the height direction, the height being greater than the width, each of the at least one light transmissive sealing member including a wavelength conversion member.   
     
     
         2 . The light emitting device according to  claim 1 , further comprising:
 a base on which the conductor wiring is provided,   wherein the at least one light emitting element includes a plurality of light emitting elements provided on the base, and   wherein the at least one light transmissive sealing member includes a plurality of light transmissive sealing members covering the plurality of light emitting elements, respectively.   
     
     
         3 . The light emitting device according to  claim 2 , wherein the plurality of light emitting elements are arranged in a lattice form on the base. 
     
     
         4 . The light emitting device according to  claim 1 , wherein each of the at least one light transmissive sealing member includes a light diffusion material. 
     
     
         5 . The light emitting device according to  claim 1 , wherein each of the at least one light transmissive sealing member includes a light diffusion material. 
     
     
         6 . The light emitting device according to  claim 1 , wherein an aspect ratio provided by dividing the height by the width is equal to or higher than 2.0. 
     
     
         7 . The light emitting device according to  claim 1 , wherein the light emitting device has a light distribution characteristic in which a center part is darker than a periphery part when light from the at least one light emitting element is viewed in the light axis direction. 
     
     
         8 . The light emitting device according to  claim 1 , wherein the light emitting device has a brightness distribution in which the center part is darker than the periphery part when light from the at least one light emitting element is viewed in the light axis direction. 
     
     
         9 . The light emitting device according to  claim 1 , further comprising:
 a base on which the conductor wiring is provided, wherein the at least one light emitting element is disposed at a height position of 0.5 mm or less from the base.   
     
     
         10 . The light emitting device according to  claim 2 ,
 wherein a distance between adjacent light emitting elements among the plurality of the light emitting elements is equal to or more than 20 mm.   
     
     
         11 . The light emitting device according to  claim 1 , further comprises a wavelength converter covering the at least one light emitting element. 
     
     
         12 . The light emitting device according to  claim 11 , wherein a height of the wavelength converter in the height direction is equal or less than ½ of the height of the projection shape. 
     
     
         13 . The light emitting device according to  claim 11 ,
 wherein the wavelength converter has a maximum length when the wavelength converter is viewed from the height direction, and   wherein the maximum length is equal to or less than ⅘ of the width.   
     
     
         14 . The light emitting device according to  claim 1 , wherein the wavelength conversion member includes a phosphor. 
     
     
         15 . The light emitting device according to  claim 11 ,
 wherein the wavelength conversion member includes a phosphor, and   wherein an emitted light wavelength of the wavelength converter is longer than an emitted light wavelength of the phosphor.   
     
     
         16 . The light emitting device according to  claim 1 , wherein a surface of the projection shape has the smallest curvature at a light axis of the at least one light emitting element.