Light emitting apparatus and automotive lamp

Patent metadata

Field	Value
Publication number	US-9404631-B2
Application number	US-201414483683-A
Country	US
Kind code	B2
Filing date	Sep 11, 2014
Priority date	Mar 15, 2012
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A light emitting apparatus includes LED chips and a light condenser condensing the light emitted from the LED chips. The light condenser has a first opening functioning as an incident part through which the light emitted from the LED chips enters, a side surface function as a reflector that reflects the light having entered through the first opening, and a second opening functioning as an emission part that emits the light reflected by the side surface. A phosphor layer, which converts the wavelength of the light emitted from the LED chips and emits the wavelength-converted light, is formed in the first opening. The light condenser is arranged such that the phosphor layer is located on the light emission surfaces of the LED chips.

First claim

What is claimed is:

1. A light emitting apparatus comprising:
a mounting part that mounts a light emitting device thereon; and
a light condenser that condenses light emitted from the light emitting device, the light condenser including:
an incident part through which the light emitted from the light emitting device enters;
a reflector that reflects light entering from the incident part; and
an emission part that emits light reflected by the reflector,
wherein a phosphor layer, which converts a wavelength of the light emitted from the light emitting device and emits the wavelength-converted light, is formed in the incident part,
wherein the light condenser is arranged such that the phosphor layer is located on a light emission surface of the light emitting device,
wherein the light condenser includes a molded body made of transparent material having a first surface part, a second surface part disposed counter to the first surface part, and a side surface part disposed in between the first surface part and the second surface part,
wherein the first surface part functions as the incident part, the second surface part functions as the emission part, and the reflector is formed such that a metallic film is formed on an outer surface of the side surface part,
wherein the phosphor layer is formed by embedding a part of plate-shaped phosphor in the first surface part,
wherein the mounting part is arranged such that a plurality of light emitting devices are able to be mounted side by side,
wherein the molded body made of transparent material is arranged for each of the plurality of light emitting devices,
wherein, in each molded body made of transparent material, an adjacent surface facing the adjacent molded body made of transparent material is formed into flat surface, and
wherein, in each molded body made of transparent material, a metallic film is formed on the adjacent surface facing the adjacent molded body made of transparent material as well as the outer surface of the side surface part.

2. An automotive lamp comprising:
a light emitting apparatus according to any one of claim 1 ; and
an optical member that controls the light emitted from the light emitting apparatus so as to emit the light therefrom toward a front area of the automotive lamp.

Assignees

• Koito Mfg Co Ltd

Inventors

• Tsutsumi Yasuaki
• Sone Naoki

Classifications

• F21S45/435

  circulating the gas within a closed system · CPC title

• F21S41/151

  arranged in one or more lines · CPC title

• F21S41/19

  Attachment of light sources or lamp holders (achieving variable light distribution by movable light sources F21S41/657) · CPC title

• F21S41/255

  Lenses with a front view of circular or truncated circular outline · CPC title

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title