Source: https://patents.google.com/patent/EP2290717A2/en
Timestamp: 2020-02-17 10:11:24
Document Index: 109643049

Matched Legal Cases: ['Application No. 10', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51']

EP2290717A2 - Light emitting apparatus and light unit - Google Patents
EP2290717A2
EP2290717A2 EP10173851A EP10173851A EP2290717A2 EP 2290717 A2 EP2290717 A2 EP 2290717A2 EP 10173851 A EP10173851 A EP 10173851A EP 10173851 A EP10173851 A EP 10173851A EP 2290717 A2 EP2290717 A2 EP 2290717A2
EP10173851A
EP2290717B1 (en
The present application claims priority of Korean Patent Application No. 10-2009-0079029 filed on August 26, 2009 , which is hereby incorporated by reference in its entirety.
The first and second sub frames 52 and 53 strongly couple the heat radiating member 50 to the body 10 and may emit heat generated from the light emitting device 20. However, the first and second sub frames 52 and 53 may not be formed or may have various shapes.
The bottom of the first part 51a may be disposed on the same horizontal surface as the bottom of the body 10 and the bottom of the second part 51b is disposed below the bottom of the body 10.
The top of the first part 51a has an area larger than the bottom of the second part 51b. That is, the top surface of the main frame 51 may have an area larger than the bottom surface of the main frame 51.
The second part 51b may protrude on the first part 51a by a first length L. When the bottom of the first part 51a is disposed on the same horizontal surface as the bottom of the body 10, the second part 51b may protrude on the bottom of the body 10 by the first length L.
Since the second part 51b protrudes on the bottom of the body 10 by the first length L, the second part 51b is excellent in physical coupling or thermal coupling with a substrate or a support member where the light emitting apparatus 1 is installed and may rapidly discharge the heat generated from the light emitting apparatus 1 to the outside.
Referring to FIG. 9, the light emitting apparatus 1A includes a body 10 including a cavity 15, a light emitting device 20 in the body 10, a first electrode 31a and a second electrode 32a of which ends are disposed in the body 10 and which are electrically connected with the light emitting device 20, a heat radiating member 50 thermally connected with the light emitting device 20, of which at least a part protrudes from the bottom of the body 10, and an encapsulant 40 formed in the cavity 15 to seal the light emitting device 20. A phosphor luminescent substance may be added to the encapsulant 40.
Referring to FIG. 10, the light emitting apparatus 1B includes a body 10 including a cavity 15, a light emitting device 20 in the body 10, a first electrode 31b and a second electrode 32b of which ends are disposed in the body 10 and which are electrically connected with the light emitting device 20, a heat radiating member 50a formed on the bottom of the body 10, at least one heat conducting via 55 thermally connecting the light emitting device 20 and the heat radiating member 50a with each other, and an encapsulant 40 formed in the cavity 15 to seal the light emitting device 20. A phosphor luminescent substance may be added to the encapsulant 40.
Any reference in this specification to " one embodiment," " an embodiment," " example embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments.
The light emitting apparatus of claim 1, wherein the sub frame is exposed toward the side of the body.
The light emitting apparatus of claim 1, wherein the heat radiating member is electrically separated from the electrode.
The light emitting apparatus of claim 1, wherein the bottom of the main frame includes a first part which disposed on the same horizontal surface as the bottom of the body and a second part which protrudes downwards from the first part.
The light emitting apparatus of claim 4, wherein the second part has a smaller width than the first part.
The light emitting apparatus of claim 4, wherein the second part protrudes from the first part by 0.1 to 3 mm.
The light emitting apparatus of claim 1, wherein the slope of the sub frame is inclined upwards from the main frame.
The light emitting apparatus of claim 1, wherein the heat radiating member includes a metallic material or a resin material.
The light emitting apparatus of claim 1, wherein a stepped section is formed on the inner surface of the body forming the cavity and the one end of the electrode is disposed at the stepped section.
The light emitting apparatus of claim 1, further comprising an optical film disposed outside of the cavity and supported by the body.
The light emitting apparatus of claim 10, wherein the optical film is a phosphor luminescent film including a phosphor luminescent substance or a diffusion film.
The light emitting apparatus of claim 1, wherein the other end of the electrode is disposed on the side of the body.
A light unit, comprising:
The light unit of claim 13, wherein the heat radiating member includes a main frame forming the bottom of the cavity and a sub frame extending from the main frame and exposed toward the side of the body.
The light unit of claim 14, wherein the top surface of the main frame has a larger area than the bottom surface of the main frame and the sub frame includes a slope which is inclined upwards from the main frame.
EP2290717A2 true EP2290717A2 (en) 2011-03-02
EP2290717B1 EP2290717B1 (en) 2018-07-25