Light-emitting device, illuminating device, vehicle headlamp, and method for producing light-emitting device

A light-emitting device, comprising:

• an excitation light source for emitting excitation light;
• a light emitting section which emits light in response to the excitation light;
• and
• a first heat conducting member connected to the light emitting section so as to receive heat from the light emitting section,
• the first heat conducting member being provided so as to conduct the heat to a member different from the first heat conducting member for use in the different member.

A light-emitting device, comprising:

• a light emitting section for emitting illumination light in response to excitation light emitted from an excitation light source;
• a supporting member for supporting the light emitting section at such a location that the light emitting section is irradiated with the excitation light;
• and
• a fall preventing mechanism which is in contact with at least part of an outer surface of the light emitting section and which, in a case where the supporting member has become unable to support the light emitting section, prevents the light emitting section from falling off the supporting member.

A light-emitting device, comprising:

• an excitation light source for emitting excitation light;
• a light emitting section including a fluorescent material which emits light in response to the excitation light, the light emitting section having an excitation light irradiation surface which is irradiated with the excitation light;
• a first heat conducting member which is provided so as to (i) face the excitation light irradiation surface and (ii) receive heat of the light emitting section;
• and
• a second heat conducting member which is provided so as to (i) face an opposite surface of the light emitting section which opposite surface is opposite to the excitation light irradiation surface and (ii) receive heat of the light emitting section.

A method for producing a light-emitting device, the method comprising the steps of:

• forming a heat conducting member in a shape of a cup;
• sintering inside the cup-shaped heat conducting member a combination of (i) a fluorescent material and (ii) a fluorescent material retention substance, having a melting point lower than a melting point of the cup-shaped heat conducting member, so as to form a light emitting section;
• polishing the light emitting section and the cup-shaped heat conducting member to make a planar surface including an opening of the cup-shaped heat conducting member;
• and
• bonding (i) the cup-shaped heat conducting member to (ii) a second heat conducting member, having a planar surface at least at a portion, so that the respective planar surfaces of the cup-shaped heat conducting member and the second heat conducting member face each other.