KR20130097949A - Light emitting device - Google Patents

Light emitting device Download PDF

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Publication number
KR20130097949A
KR20130097949A KR1020120019652A KR20120019652A KR20130097949A KR 20130097949 A KR20130097949 A KR 20130097949A KR 1020120019652 A KR1020120019652 A KR 1020120019652A KR 20120019652 A KR20120019652 A KR 20120019652A KR 20130097949 A KR20130097949 A KR 20130097949A
Authority
KR
South Korea
Prior art keywords
light emitting
unit
waterproof
emitting device
emitting unit
Prior art date
Application number
KR1020120019652A
Other languages
Korean (ko)
Inventor
류승원
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020120019652A priority Critical patent/KR20130097949A/en
Publication of KR20130097949A publication Critical patent/KR20130097949A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/483—Containers
    • H01L33/486—Containers adapted for surface mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/52—Encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/64—Heat extraction or cooling elements
    • H01L33/641—Heat extraction or cooling elements characterized by the materials

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The light emitting device according to the present invention includes a light emitting unit including a light emitting element to surround a light emitting unit and a light emitting unit, the first waterproof unit waterproofing the light emitting unit, and a waterproofing unit between the light emitting unit and the first waterproof unit. It includes two waterproof units. It is possible to improve the waterproofness for the light emitting device by such a configuration it is possible to ensure the safety.

Description

[0001] LIGHT EMITTING DEVICE [0002]

A waterproof light emitting device is disclosed. More specifically, a light emitting device that can safely block the inflow of moisture to the light emitting device is disclosed.

2. Description of the Related Art [0002] With the recent development of semiconductor technology, the spread of high efficiency light emitting diodes (LEDs) has been increasing. The light emitting device is applied as a backlight light source of a display device, or is applied to a light emitting device of a wide range of fields such as an illuminator such as an incandescent bulb, a fluorescent lamp or a street lamp.

The light emitting device is generally mounted on a printed circuit board on which a predetermined pattern is patterned and electrically controlled. However, when the light emitting device is exposed to external moisture, such as when the light emitting device employing the light emitting device is installed outdoors, a malfunction such as an electrical short circuit occurs. Accordingly, in recent years, researches that can improve the waterproofness of light emitting devices employing light emitting devices have been continuously required.

According to one embodiment of the present invention, there is provided a light emitting device capable of ensuring waterproofness with a simple structure.

The light emitting device according to an embodiment of the present invention includes a light emitting unit including a light emitting element, a light emitting unit to surround the light emitting unit, a first waterproof unit to waterproof the light emitting unit, and the light emitting unit and the first waterproof unit. It includes a second waterproof unit for waterproofing the space.

According to one side, the light emitting unit includes a light emitting device package is packaged by mounting the light emitting device on a substrate, the first waterproof unit is surface-mounted (Solder paste) on the substrate to surround the light emitting device package.

According to one side, the first waterproof unit surrounds the side edge of the light emitting unit on the basis of the light irradiation direction from the light emitting element, the second waterproof unit is formed of an elastic material, the light emitting unit and the first It is inserted between the waterproof units.

According to one side, the first waterproofing unit includes a waterproof frame surrounding the light emitting device by surface-mounting (Solder paste) on a substrate on which the light emitting device is mounted, the second waterproof unit is the first facing the light emitting unit; The posture is inserted into the fixing groove provided on the inner surface of the waterproof unit, and the posture is fixed.

According to one side, the first waterproof unit is formed of a heat radiation material having a high thermal conductivity to radiate the light emitting unit, the second waterproof unit is formed of any one of an elastic material, a silicon material or an epoxy material.

According to an embodiment of the present invention, there is provided a light emitting device mounted on a substrate, the light emitting unit, the first waterproof unit which is mounted on the substrate to surround the outside of the light emitting unit, the first waterproofing unit of the light emitting unit, and the And a second waterproof unit disposed between the light emitting unit and the first waterproof unit to second waterproof the light emitting unit.

According to one side, the first waterproof unit surrounds the side edge of the light emitting unit on the basis of the light irradiation direction from the light emitting element, is formed of a heat radiation material of high thermal conductivity, the second waterproof unit is made of an elastic material, silicon It is formed of either a material or an epoxy material.

According to one side, the second waterproof unit is inserted into a fixing groove provided on the inner surface of the first waterproof unit facing the light emitting unit is fixed in posture, formed of an elastic material for the light emitting unit and the first waterproof unit Close contact.

In the light emitting device having the above-described configuration, first, by waterproofing the light emitting unit in two stages, the light emitting device can contribute to improved waterproofness, thereby improving safety problems due to moisture such as an existing electrical short.

Second, as the first waterproof unit is surface-mounted on the substrate of the light emitting unit to waterproof the light emitting device of the light emitting unit, it is possible to secure waterproofness to the light emitting device itself with a simple structure, thereby improving the waterproof efficiency. .

Third, as the first waterproof unit surrounding the light emitting unit is formed of aluminum, it is possible to ensure heat dissipation along with waterproofness to the light emitting unit.

Fourth, by inserting a second waterproof unit of the elastic material between the first waterproof unit and the light emitting unit surrounding the light emitting unit, it is possible to ensure the buffer of the light emitting unit against external force.

1 is a perspective view schematically showing a light emitting device according to an embodiment of the present invention;
FIG. 2 is a sectional view schematically illustrating main parts of the waterproof unit shown in FIG. 1, and
3 is a perspective view schematically illustrating a modification of the light emitting device illustrated in FIG. 1.

Embodiments according to the present invention will be described in detail with reference to the contents described in the drawings. However, the present invention is not limited or limited by the embodiments.

Referring to FIG. 1, the light emitting device 1 according to an embodiment includes a light emitting unit 10, a first waterproofing unit 20, and a second waterproofing unit 30.

The light emitting unit 10 is a light source of the light emitting device 10. The light emitting unit 10 includes a light emitting unit 11a (LED) and a substrate unit on which the light emitting unit 11 is mounted. And (12).

The light emitting part 11 covers and protects the light emitting element 11a, which is a semiconductor element, the light emitting body 11b supporting the light emitting element 11a, and the light emitting element 11a, and the light irradiation direction L. And a guiding lens 11c. The light emitting unit 11 is a light emitting device package in which the light emitting device 11a, the light emitting body 11b, and the lens 11c are mutually packaged.

In the substrate part 12, the light emitting part 11 is surface mounted to electrically control the light emitting device 11a. The substrate part 12 includes a printed circuit board on which a predetermined pattern is patterned, but is not limited thereto.

For reference, although not shown in detail, the light emitting unit 11 is provided with a lead frame electrically connected to the circuit pattern of the substrate unit 12 in the light emitting body (11b).

The first waterproof unit 20 is provided to surround the light emitting unit 10 to waterproof the light emitting unit 10. Here, the first waterproof unit 20, as shown in Figures 1 and 2, based on the irradiation direction (L) of the light emitted from the light emitting element (11a), the side edge of the light emitting unit 10 Includes a waterproof frame surrounding the. In this case, as shown in FIG. 2, the first waterproof unit 20 is surface-mounted on the substrate part 12 in a state spaced apart from the side surface of the light emitting unit 10 by a predetermined interval (G). Here, due to the spaced apart interval (G) between the light emitting unit 10 and the first waterproof unit 20, it is loosely installed in the first waterproof unit 20 with respect to the light emitting unit 10, by the external force The interference of the light emitting unit 10 can be minimized.

On the other hand, the first waterproof unit 20 is preferably formed of a heat-dissipating material such as aluminum having a high thermal conductivity so as to dissipate heat generated by the light emitting operation of the light emitting unit 10.

For reference, in FIG. 1, as the overall appearance of the light emitting unit 10, which is a light emitting device package, is illustrated as having a substantially rectangular shape, the first waterproof unit 20 also has a hollow rectangular frame shape. To illustrate. However, the present invention is not limited thereto, and the shapes of the light emitting unit 10 and the first waterproofing unit 20 may vary depending on light emitting conditions.

The second waterproof unit 30 waterproofs the light emitting unit 10 and the first waterproof unit 20. As shown in FIG. 2, the second waterproof unit 30 is installed on a space spaced a predetermined distance G between the light emitting unit 10 and the first waterproof unit 20. Specifically, the second waterproof unit 30 is inserted into the fixing groove 21 provided on the inner surface of the first waterproof unit 20 facing the side of the light emitting unit 10. At this time, the second waterproof unit 30 has a circular cross section, and the fixing groove 21 has a shape corresponding to that, that is, a hemispherical shape, the second waterproof unit inserted into the fixing groove 21 ( 30) the posture can be fixed. Accordingly, the second waterproof unit 30 does not flow in close contact with the light emitting unit 10 and the first waterproof unit 20.

In addition, the second waterproof unit 30 is formed of an elastic material such as rubber (rubber). Due to the material and shape characteristics of the second waterproof unit 30, it is also possible to cushion the impact of the external force between the light emitting unit 10 and the first waterproof unit 20.

The waterproof operation of the light emitting device 1 according to the present invention having the above configuration will be described with reference to FIGS. 1 and 2.

As shown in FIGS. 1 and 2, the side edges of the light emitting unit 10 including the light emitting element 11a are surrounded by the first waterproof unit 20, thereby preventing moisture interference to the light emitting element 11a. Is blocked first. At this time, as the first waterproof unit 20 is surface-mounted on the substrate 12, it is possible to waterproof the light emitting device 11a itself packaged on the substrate 11b.

In addition, the space is spaced between the light emitting unit 10 and the first waterproof unit 20 by a predetermined interval (G) is inserted into the fixing groove 21 provided on the inner surface of the first waterproof unit 20 to be seated By providing the second waterproof unit 30, the external moisture interference is blocked second. In this case, the second waterproof unit 30 may be formed of an elastic material to buffer the external force applied to the light emitting unit 10.

On the other hand, when the second waterproof unit 30 is formed of an elastic material and inserted between the light emitting unit 10 and the first waterproof unit 20, the edge of the light emitting unit 10 is angled to form a second elastic material. The waterproof unit 30 may not be completely in contact between the light emitting unit 10 and the first waterproof unit 20. Correspondingly, as shown in FIG. 3, the edges of the light emitting body 11b ′ of the light emitting unit 10 have rounded shapes, and correspondingly, the inner edges of the first waterproofing unit 20 ′ also have rounded shapes. Branches can also be modified. In addition, although not shown in detail, between the light emitting unit 10 and the first waterproof unit 20 is filled with a waterproof material such as silicon or epoxy material to form a second waterproof unit 30, thereby forming the light emitting unit 10. Another variant of waterproofing is also possible.

For reference, although the heights of the light emitting body 11b and the first waterproofing unit 20 are the same with respect to the substrate unit 12 of the light emitting unit 10, the first waterproofing unit 20 is illustrated in FIG. 2. Of course, the height of the modification is relatively low compared to the light emitting body (11b) is also possible.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

1: Light emitting device 10: Light emitting unit
11: light emitting portion 12: substrate portion
20: first waterproof unit 30: second waterproof unit

Claims (8)

A light emitting unit having a light emitting element to emit light;
A first waterproof unit provided to surround the light emitting unit and waterproofing the light emitting unit; And
A second waterproof unit waterproofing the light emitting unit and the first waterproof unit;
Emitting device.
The method of claim 1,
The light emitting unit includes a light emitting device package packaged with the light emitting device mounted on a substrate,
The first waterproof unit is surface mounted on the substrate (Solder paste) to surround the light emitting device package.
The method of claim 1,
The first waterproof unit surrounds the side edge of the light emitting unit on the basis of the direction of light irradiation from the light emitting element,
The second waterproof unit is formed of an elastic material, the light emitting device is inserted between the light emitting unit and the first waterproof unit.
The method of claim 1,
The first waterproof unit includes a waterproof frame surrounding the light emitting device by surface mounting on a substrate on which the light emitting device is mounted.
The second waterproof unit is inserted into a fixing groove provided on the inner surface of the first waterproof unit facing the light emitting unit is fixed in posture, formed of an elastic material to be in close contact with the light emitting unit and the first waterproof unit .
The method of claim 1,
The first waterproof unit is formed of a heat radiation material having a high thermal conductivity to radiate the light emitting unit,
The second waterproof unit is a light emitting device formed of any one of an elastic material, a silicon material or an epoxy material.
A light emitting unit having a light emitting element mounted on a substrate;
A first waterproof unit mounted on the substrate to surround the outside of the light emitting unit to first waterproof the light emitting unit; And
A second waterproof unit installed between the light emitting unit and the first waterproof unit to second waterproof the light emitting unit;
Emitting device.
The method according to claim 6,
The first waterproof unit surrounds a side edge of the light emitting unit based on a direction in which light is emitted from the light emitting device, and is formed of a heat dissipation material having high thermal conductivity.
The second waterproof unit is a light emitting device formed of any one of an elastic material, a silicon material or an epoxy material.
The method according to claim 6,
The second waterproof unit is inserted into a fixing groove provided on the inner surface of the first waterproof unit facing the light emitting unit is fixed in posture, formed of an elastic material to be in close contact with the light emitting unit and the first waterproof unit .
KR1020120019652A 2012-02-27 2012-02-27 Light emitting device KR20130097949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120019652A KR20130097949A (en) 2012-02-27 2012-02-27 Light emitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120019652A KR20130097949A (en) 2012-02-27 2012-02-27 Light emitting device

Publications (1)

Publication Number Publication Date
KR20130097949A true KR20130097949A (en) 2013-09-04

Family

ID=49450071

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120019652A KR20130097949A (en) 2012-02-27 2012-02-27 Light emitting device

Country Status (1)

Country Link
KR (1) KR20130097949A (en)

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