Light source unit, and light emitting device for mobile body

Abstract

A light source unit includes: a light source part that emits excitation light; a light emitting part that emits generated light by being irradiated with the excitation light; a support part that guides the excitation light to the light emitting part while supporting the light emitting part; and a reflective part provided on a back surface of the support part, the back surface being on a side opposite to an emission direction of the generated light.

1 . A light source unit comprising:
 a light source part that emits excitation light;   a light emitting part that emits generated light by being irradiated with the excitation light;   a support part that guides the excitation light to the light emitting part while supporting the light emitting part; and   a reflective part provided on a back surface of the support part, the back surface being on a side opposite to an emission direction of the generated light.   
     
     
         2 . The light source unit according to  claim 1 , wherein
 the reflective part is defined as a first reflective part,   the support part is provided with a second reflective part on a side surface laid between a front surface in the emission direction and the back surface at a position different from an incident surface on which the excitation light from the light source part is incident.   
     
     
         3 . The light source unit according to  claim 2 , wherein
 the side surface is inclined in a state in which at least a portion of the side surface is directed toward the front surface.   
     
     
         4 . The light source unit according to  claim 2 , wherein
 the light emitting part is a first light emitting part provided on the front surface, and   the support part has a second light emitting part that emits generated light by irradiation between the first reflective part and the back surface with the excitation light.   
     
     
         5 . The light source unit according to  claim 1 , wherein
 the light emitting part is a first light emitting part provided on a front surface of the support part in the emission direction, and   the first light emitting part is sectioned into two or more light emitting sections, which emit the generated light having different colors in response to the excitation light.   
     
     
         6 . A light emitting device for a mobile body comprising:
 the light source unit according to  claim 1 ; and   an outer lens that emits the generated light from the light source unit, wherein   the outer lens is provided with a filter part that suppresses transmission of an ultraviolet ray.   
     
     
         7 . A light emitting device for a mobile body comprising:
 a light source part that emits excitation light;   a light emitting part that emits generated light by being irradiated with the excitation light;   an outer lens that emits the generated light; and   a filter part that is provided in the outer lens and suppresses transmission of an ultraviolet ray.