Light source module

Patent metadata

Field	Value
Publication number	US-9976721-B2
Application number	US-201615065399-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 11, 2015
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A light source module includes a light source which comprises a light emitting element, a stem configured to support the light emitting element, and a terminal having one end electrically connected to the light emitting element, a wiring board to which the other end of the terminal is electrically connected and which is configured to electrically connect the terminal to an external power supply terminal, and a thermal diffusion member which is disposed between the stem and the wiring board and is thermally connected to the light emitting element.

First claim

What is claimed is:

1. A light source module comprising:
a light source comprising:
a light emitting element,
a stem configured to support the light emitting element, and
a terminal having one end electrically connected to the light emitting element;

a wiring board to which the other end of the terminal is electrically connected and which is configured to electrically connect the terminal to an external power supply terminal; and
a thermal diffusion member which is disposed between the stem and the wiring board and is thermally connected to the light emitting element,
wherein the thermal diffusion member comprises:
a first surface facing the wiring board,
a second surface facing the wiring board and located at a position spaced apart from the wiring board than the first surface, and
a through hole extending from the second surface to a surface on the light source side,

wherein the wiring board is arranged such that an end region of the wiring board is overlapped with the second surface, as seen from a stacked direction of the light source, the thermal diffusion member and the wiring board, and
wherein the terminal is inserted through the through hole and is electrically connected to the wiring board at the end region.

2. The light source module according to claim 1 , further comprising:
a flexible insulation member disposed between the second surface and the end region.

3. The light source module according to claim 1 ,
wherein the wiring board and the terminal are fixed to each other by a connection member, and
wherein the terminal has a bent portion which is deformed in accordance with dimensional change in at least one of the thermal diffusion member, the terminal, the wiring board and the connection member.

4. The light source module according to claim 1 ,
wherein the thermal diffusion member has a connection surface which is connected to a heat sink, and
wherein the connection surface is located at a position spaced apart from the light source than the wiring board.

Assignees

• Koito Mfg Co Ltd

Inventors

• Tsuda Toshiaki

Classifications

• F21S41/176

  Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title

• F21Y2115/30

  Semiconductor lasers · CPC title

• F21V17/12

  by screwing · CPC title

• H01S5/02469

  Passive cooling, e.g. where heat is removed by the housing as a whole or by a heat pipe without any active cooling element like a TEC · CPC title

• F21V23/06

  the elements being coupling devices {, e.g. connectors} · CPC title