Light emitting apparatus, and light irradiation apparatus provided with light emitting apparatus

Patent metadata

Field	Value
Publication number	US-9400088-B2
Application number	US-201214343084-A
Country	US
Kind code	B2
Filing date	Aug 21, 2012
Priority date	Sep 16, 2011
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A light emitting device ( 1 ) includes (i) a surface-mounted light emitting section ( 10 a ), (ii) a lens section ( 30 ) which is provided on a light exit side of the surface-mount light emitting section ( 10 a ), and (iii) a frame section ( 40 ) which fixes a periphery of the lens section ( 30 ). In the surface-mounted light emitting section ( 10 a ), a resin layer ( 17 ) that contains a red fluorescent material ( 17 b ) covers at least one (1) blue LED chip ( 14 a ). This allows the surface-mounted light emitting section ( 10 a ) to emit (i) light that matches a peak wavelength which falls within a short wavelength range and (ii) light that matches a peak wavelength which falls within a long wavelength range.

First claim

The invention claimed is:

1. A light emitting device, comprising:
a plurality of surface-mounted light emitting sections provided in a matrix manner, the plurality of surface-mounted light emitting sections including at least one (1) surface-mounted light emitting section which is mounted on a surface of a wiring substrate;
a lens section which is provided on a light exit side of the at least one surface-mounted light emitting section;
a frame section which fixes a periphery of the lens section, the frame section having a lattice shape so as to correspond to the plurality of surface-mounted light emitting sections; and
upright wall sections being upright from the frame section toward the light exit side and successively arranged along a row direction of the plurality of surface-mounted light emitting sections, an upright wall section being provided between respective adjacent surface-mounted light emitting sections provided in a column direction that intersects the row direction,
each of the upright wall sections being configured to rotate between (i) a state in which the upright wall section is upright and (ii) a state in which the upright wall section is slanted to the surface of the wiring substrate,
the lens section being provided for each compartment of the frame section in the lattice shape, and
the at least one surface-mounted light emitting section including:
at least one (1) first LED chip which emits first light that matches a first peak wavelength of a plurality of peak wavelengths of light that is to be absorbed by living organisms that require light to grow, the first peak wavelength falling within a relatively short wavelength range; and
a sealing resin, containing a fluorescent material, which is provided so as to cover the at least one first LED chip,
the fluorescent material absorbing the first light, which is emitted by the at least one first LED chip, so as to emit third light that matches a third peak wavelength of the plurality of peak wavelengths, the third peak wavelength falling within a relatively long wavelength range.

2. The light emitting device as set forth in claim 1 , wherein:
the at least one surface-mounted light emitting section includes at least one (1) second LED chip which emits second light which matches a second peak wavelength of the plurality of peak wavelengths, the second peak wavelength (i) falling within the relatively short wavelength range and (ii) being different from the first peak wavelength.

3. The light emitting device as set forth in claim 2 , wherein:
a second wavelength of the second light falls within a range from 400 nm to 450 nm.

4. The light emitting device as set forth in claim 1 , wherein:
the lens section and the frame section are integrated with each other so as to serve as a lens module.

5. The light emitting device as set forth in claim 1 , wherein:
a first wavelength of the first light falls within a range from 400 nm to 480 nm, and
a third wavelength of the third light falls within a range from 620 nm to 700 nm.

6. The light emitting device as set forth in claim 1 , wherein:
the at least one surface-mounted light emitting section has an opening part in a rectangular shape having short sides and long sides, via which opening part light that contains the first light and the third light is emitted.

7. A light irradiation apparatus, comprising a light emitting device recited in claim 1 as a light source for growing of living organisms, the growing including cultivation or culturing.

Assignees

• Hata Toshio
• Osaki Shinji
• Uemura Toyonori
• Ishizaki Shinya
• Matsushita Hitoshi
• Sharp Kk

Inventors

• Hata Toshio
• Osaki Shinji
• Uemura Toyonori
• Ishizaki Shinya
• Matsushita Hitoshi

Classifications

• H10W90/756

  between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title

• H10W90/00

  Package configurations · CPC title

• H10H20/851 Primary

  Wavelength conversion means · CPC title

• H01L25/0753

  Electricity · mapped topic

• F21K9/50 Primary

  Mechanical Engineering · mapped topic