KR20170025469A - Heatsink and floodlight having the same - Google Patents

Heatsink and floodlight having the same Download PDF

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Publication number
KR20170025469A
KR20170025469A KR1020150121942A KR20150121942A KR20170025469A KR 20170025469 A KR20170025469 A KR 20170025469A KR 1020150121942 A KR1020150121942 A KR 1020150121942A KR 20150121942 A KR20150121942 A KR 20150121942A KR 20170025469 A KR20170025469 A KR 20170025469A
Authority
KR
South Korea
Prior art keywords
heat
heat sink
light source
radiating fins
present
Prior art date
Application number
KR1020150121942A
Other languages
Korean (ko)
Inventor
윤명한
Original Assignee
건국대학교 글로컬산학협력단
(주)한성스마트엘이디
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 건국대학교 글로컬산학협력단, (주)한성스마트엘이디 filed Critical 건국대학교 글로컬산학협력단
Priority to KR1020150121942A priority Critical patent/KR20170025469A/en
Publication of KR20170025469A publication Critical patent/KR20170025469A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/745—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades the fins or blades being planar and inclined with respect to the joining surface from which the fins or blades extend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The present invention relates to a heat radiation plate having a plurality of heat radiation pins. The heat radiation pins are provided to have a uniform angle, and are arranged to the center of the heat radiation plate. Therefore, the heat radiation efficiency can be increased since the heat radiation plate is unaffected by a blowing direction of wind.

Description

Heatsink and floodlight having the same [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat sink and a light emitting device including the same, and more particularly, to a structure of a heat sink having a reduced resistance to air and a short residence time due to rapid departure of air.

Generally, billboards are installed in the outskirts of downtown or in the outskirts of the city, and they are widely used as advertisements and contents. These billboards display the contents of advertisements in various forms, such as from simple lettering to shapes, drawings, patterns, and characters.

Typically, the billboard is installed on the upper surface of the billboard structure and is provided at a predetermined height from the ground or the roof of the building, and the billboard is installed at one side of the upper side of the billboard structure.

As a result, the advertisement board is installed in the place where there is almost no light in outdoor such as mountains, especially in the nighttime, rather than in the downtown area, because of the advantage that the advertisement can be realized at night. Many of them are installed in the mountains and mountains adjacent to the motorway and expressway because they can fully understand the contents.

Conventionally, an incandescent lamp or a fluorescent lamp has been used for light emission, but recently, a light emitting diode (LED) has been used. The floodlight using LEDs can control the intensity of light depending on the application, and has energy efficiency and a semi-permanent lifetime. In addition, although the light emission using LEDs has an advantage that it is not affected by changes in ambient temperature, the efficiency is lowered due to heat generation when a certain period of time is used, and the heat generation amount gradually increases during continuous use, .

Various studies have been made to increase the heat dissipation efficiency of the floodlight using the LED.

Korean Patent Publication No. 10-2012-0090915.

Accordingly, it is an object of the present invention to provide a heat dissipating plate that is not affected by a wind direction using various structures.

Further, the object of the present invention is to increase the heat radiation efficiency by influencing the center of the heat sink by the wind blowing on the heat sink.

According to an aspect of the present invention, there is provided a heat sink including a plurality of heat radiating fins, wherein the heat radiating fins are arranged to have a predetermined angle, and corner portions are arranged to face the center of the heat sink .

Preferably, the radiating fin is formed to have a height higher toward the center than an outer side of the radiating plate.

The heat dissipation fins may include a plurality of heat dissipation fins. The plurality of heat dissipation fins may be arranged in a plate shape, and the heat dissipation fins having different heights may be alternately arranged.

The heat dissipation fins may include a plurality of heat dissipation fins. The heat dissipation fin may be arranged in a horizontal direction or a vertical direction so as to cross the heat dissipation plate in one central region, And the like.

Preferably, the heat sink is coated with a mixture of a surface coating agent and a metal powder.

Preferably, the surface coating agent is Kash and the metal powder is aluminum.

According to another aspect of the present invention, there is provided a light source device comprising: a light source unit having a light source for emitting light; A front cover disposed on a front surface of the light source unit and through which light passes; And a heat radiating plate according to any one of claims 1 to 4, wherein the front cover is provided so as to have a wider outer surface toward the light source unit.

Preferably, the front cover has a truncated quadrangular pyramid shape.

According to the heat radiating plate of the present invention, the heat radiation efficiency can be increased without being influenced by the wind direction.

In addition, it is possible to increase the efficiency of heat dissipation in the center portion where the heat is concentrated by adopting a structure in which the wind can be concentrated in the center portion.

Another advantage of the present invention is that the wind pressure can be minimized by using the structure of the flood light, thereby reducing the wind pressure.

1 is a view illustrating a heat sink according to a first embodiment of the present invention,
2 is a side view of Fig. 2,
3 is a view illustrating a heat sink according to a second embodiment of the present invention,
4 is a view illustrating a heat sink according to a third embodiment of the present invention,
5 is a view illustrating a heat sink according to a fourth embodiment of the present invention,
Fig. 6 is a perspective view of a flood light, which is another embodiment of the present invention,
7 is an exploded perspective view of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

The heat sink 10 according to the embodiment of the present invention has a structure for increasing the heat radiation efficiency of the heat sink 10 operating in an air-cooling type. It is possible to arrange a plurality of the heat dissipation fins 12 to quickly discharge the heat generated from the light source and smoothly discharge the heated air, thereby suppressing the generation of vortex due to scattering, thereby increasing the efficiency of the heat dissipating plate.

The heat sink 10 according to various embodiments of the present invention may be made of various heat sink materials that are commonly used in the structure.

FIG. 1 is a view showing a heat sink according to a first embodiment of the present invention, and FIG. 2 is a side view of a first embodiment of the present invention.

1 and 2, a heat sink 10 according to a first embodiment of the present invention includes a plurality of heat dissipation fins 12, and the heat dissipation fins 12 are provided to have a predetermined angle, 10, respectively. As described above, since the edge of the heat dissipation fin 12 faces the center of the heat dissipation plate 10, the heat is concentrated to the center of the heat dissipation plate 10 where heat is generated irrespective of the wind direction, .

The heat radiating fins 12 may be arranged so that the heat radiating fins 12 are symmetrical in the left and right direction and the up and down direction in order to arrange as many as possible. By arranging a large number of the heat radiation fins 12, heat generated from the light source can be easily released to the outside.

The radiating fin 12 may be arranged so that its height increases from the outer side to the central portion. The difference in height of the radiating fins 12 can be used to uniformly receive the influence of the wind to increase the radiating efficiency.

FIG. 3 is a view illustrating a heat sink according to a second embodiment of the present invention, and FIG. 4 is a view illustrating a heat sink according to a third embodiment of the present invention.

Referring to FIGS. 3 and 4, the radiating fins 12 are provided in a plate shape so that the radiating fins 12 having different heights of one region or the whole can be alternately arranged.

The purpose of the radiating fin 12 is to radiate heat generated from the light source. For this purpose, air circulation in the space between the radiating fins 12 should be performed smoothly. A difference in height is given to the radiating fins 12 to move the radiating fins 12, and a pressure difference is given to the radiating fins 12, so that circulation of the heated air can be smoothly performed.

The heat radiating fin 12 can be formed with a wind traveling passage corresponding to a height difference in one region of the upper portion, and the shape of the traveling passage is not limited.

5 is a view showing a heat sink according to a fourth embodiment of the present invention.

5, the heat radiating fins 12 may be arranged in a horizontal or vertical direction to cross the heat sink 10 in one central region, and may be arranged in a non-selected direction in one central region in the remaining region have.

The floodlight can be located in various places. It can be installed in various places such as highway in the mountains, the sea or the city center, and the direction of the wind mainly blown by the specific heat difference and pressure of each position can be changed. Therefore, the heat radiating fins 12 are arranged so that the blowing wind can pass through the center portion. The heat dissipation fins 12 may be arranged such that a plurality of the heat dissipation fins 12 are arranged in a transverse direction to cross the heat dissipation plate 10 when the wind blows mainly in the left and right winds in a place where the heat dissipation plate 10 is installed.

The above-mentioned embodiment can be selected in accordance with the wind direction and the wind direction.

Generally, since the heat sink 10 is installed outdoors, there is a problem that it is exposed to rain or is salted. The heat sink 10 according to the embodiment of the present invention is waterproofed on the surface. The heat sink 10 may be coated with a mixture of a surface coating agent and a metal powder. The surface of the metal powder mixed with the surface coating agent becomes odoldoll, and the heat of the heat sink 10 can be discharged faster by increasing the surface area.

For example, the surface coating agent may be kashu, and the metal powder may be aluminum. In this case, the total amount of the cashews may be 85 to 92% and the aluminum may be 15 to 8%.

Such a surface coating is not limited to the heat sink 10 but may also be coated on a light source portion exposed to the outside in a structure of a light projecting or the like.

As described above, according to the heat radiating plate of the present invention, the heat radiation efficiency can be increased without being influenced by the wind direction.

In addition, it is possible to increase the efficiency of heat dissipation in the center portion where the heat is concentrated by adopting a structure in which the wind can be concentrated in the center portion.

Hereinafter, a floodlight according to another embodiment of the present invention will be described with reference to the accompanying drawings. However, the description of the same components as those of the heat sink according to the embodiment of the present invention will be omitted.

Fig. 6 is a perspective view of a flood light, which is another embodiment of the present invention, and Fig. 7 is an exploded perspective view of Fig. 6 and 7, the same reference numerals as in Figs. 1 to 5 denote the same members, and a detailed description thereof will be omitted.

Referring to these drawings, the floodlight 100, which is another embodiment of the present invention, includes a light source unit 30, a front cover 20, and a heat sink 10.

The light source unit 30 includes a plurality of light sources that emit light in the light source 100, and may include other devices that supply power to the light sources. The light source may be various ones that generate light, but preferably an LED can be used.

The front cover 20 may emit light emitted from the light source unit 30 forward, and a transparent material such as glass or plastic may be used to transmit light. In addition, various types of lenses can be used to adjust the direction of light irradiation.

The front cover 20 is disposed on the front surface of the light source and may be formed so as to have a wider outer surface toward the light source unit 30. [ This is to minimize the wind pressure applied to the floodlight 100 when the wind is blown, to reduce the wind pressure and to reduce the air resistance, thereby minimizing the influence of the wind on the outdoor floodlight 100.

In one embodiment, the front cover 20 is formed in a truncated cone shape at a quadrangular pyramid to make the air flow smooth.

The front cover 20 is coupled to the light source unit 30 by the fixing unit 22 and the fixing unit 22 can be variously used for connecting the front cover 20 and the light source unit 30. [

The heat sink 10 emits heat generated in the light source to the outside, and one of the above-mentioned embodiments of the present invention can be used.

As described above, the floodlight, which is another embodiment of the present invention, has the effect of minimizing the wind pressure and lowering the wind pressure.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Heat sink
12: heat sink fin
20: Front cover
22:
30: Light source
100: Floodlight

Claims (8)

A heat sink comprising a plurality of radiating fins,
The heat-
Wherein the heat sink is arranged so as to have a constant angle and the corner portion is arranged to face the center of the heat sink. The method according to claim 1,
The heat-
And the height of the heat sink increases from the outer side to the center of the heat sink. A heat sink comprising a plurality of radiating fins,
The heat-
Wherein the heat radiating fins are arranged in a plate shape, and the heat radiating fins having different heights of one region or the whole are alternately arranged. A heat sink comprising a plurality of radiating fins,
The heat-
And one region of the center is arranged in the horizontal or vertical direction so as to traverse the heat sink,
And the remaining regions are arranged in a direction that is not selected in one of the central regions. 5. The method according to any one of claims 1 to 4,
The heat-
Wherein the surface is coated by a mixture of a surface coating agent and a metal powder. 6. The method of claim 5,
Wherein the surface coating agent is Kash and the metal powder is aluminum. A light source unit having a light source for emitting light;
A front cover disposed on a front surface of the light source unit and through which light passes; And
A heat sink comprising the heat sink of any one of claims 1 to 4,
Wherein the front cover comprises:
And the outer circumferential surface is widened toward the light source part. 8. The method of claim 7,
Wherein the front cover has a shape truncated at a quadrangular pyramid.

KR1020150121942A 2015-08-28 2015-08-28 Heatsink and floodlight having the same KR20170025469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150121942A KR20170025469A (en) 2015-08-28 2015-08-28 Heatsink and floodlight having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150121942A KR20170025469A (en) 2015-08-28 2015-08-28 Heatsink and floodlight having the same

Publications (1)

Publication Number Publication Date
KR20170025469A true KR20170025469A (en) 2017-03-08

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Family Applications (1)

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KR1020150121942A KR20170025469A (en) 2015-08-28 2015-08-28 Heatsink and floodlight having the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648563A (en) * 2020-12-31 2021-04-13 福建省中科生物股份有限公司 Novel interior radiating plant lamp in wind channel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120090915A (en) 2010-02-10 2012-08-17 주식회사 케이엠더블유 Structure of heat sink

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120090915A (en) 2010-02-10 2012-08-17 주식회사 케이엠더블유 Structure of heat sink

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648563A (en) * 2020-12-31 2021-04-13 福建省中科生物股份有限公司 Novel interior radiating plant lamp in wind channel

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