KR20110015300A - Cooling and heat radiation device of lamp and street light for using the same - Google Patents

Cooling and heat radiation device of lamp and street light for using the same Download PDF

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Publication number
KR20110015300A
KR20110015300A KR1020090072945A KR20090072945A KR20110015300A KR 20110015300 A KR20110015300 A KR 20110015300A KR 1020090072945 A KR1020090072945 A KR 1020090072945A KR 20090072945 A KR20090072945 A KR 20090072945A KR 20110015300 A KR20110015300 A KR 20110015300A
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KR
South Korea
Prior art keywords
heat
lamp
transfer block
heat transfer
led
Prior art date
Application number
KR1020090072945A
Other languages
Korean (ko)
Inventor
제동국
Original Assignee
피티씨 주식회사
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 피티씨 주식회사 filed Critical 피티씨 주식회사
Priority to KR1020090072945A priority Critical patent/KR20110015300A/en
Publication of KR20110015300A publication Critical patent/KR20110015300A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
    • F21S13/02—Devices intended to be fixed, e.g. ceiling lamp, wall lamp
    • F21S13/10—Devices intended to be fixed, e.g. ceiling lamp, wall lamp with a standard, e.g. street lamp
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/717—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
    • 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
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • 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
    • F21W2131/103—Outdoor lighting of streets or roads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

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

Abstract

A heat transfer block installed in the lamp, and a heat pipe installed at one end of the heat transfer block to rapidly dissipate high heat generated from the lamp and to simplify the structure and minimize the use of energy for heat dissipation. The other end of the heat pipe is provided and provides a heat dissipation device including a heat dissipator that radiates heat to the outside air.

Description

Lamp heat dissipation device and street light using the same {COOLING AND HEAT RADIATION DEVICE OF LAMP AND STREET LIGHT FOR USING THE SAME}

The present invention relates to a heat dissipation device capable of more simply and efficiently cooling heat generated from a light emitting source such as a lamp. More particularly, the present invention relates to a heat dissipation device for heat dissipating LED lamps and a street lamp using the same.

In recent years, interest in alternative energy is increasing to cope with exhausted fossil fuels and reduce pollution caused by fossil fuels.

For example, in a lighting device such as a street lamp, a conventional sodium lamp or a mercury lamp is being converted into a high brightness light emitting diode (LED).

However, LED streetlights can increase the brightness as they become more efficient, but the high heat generated from the opposite side of the LED light source also reaches a serious level.

Accordingly, in the case of a street lamp using a high efficiency LED, measures to dissipate heat generated from the LED are urgently needed. If heat dissipation occurs smoothly, the LED will have a lifespan of about five years, but at present, the lifespan is only about one year, and as time goes by, the brightness becomes low and it cannot function as a street lamp.

In recent years, there have been attempts to improve the heat dissipation structure of LEDs. However, this consumes more power than the LED's power consumption or has a complicated structure, making it difficult to be practically manufactured.

The present invention provides a lamp heat dissipation device and a street lamp using the same, which can quickly dissipate high heat generated from a lamp.

The present invention also provides a lamp heat dissipation device and a street lamp using the same, which can simplify the structure and minimize the use of energy for heat dissipation.

In addition, it provides a lamp heat dissipation device and a street lamp using the same to minimize the production cost to increase the competitiveness of the product.

To this end, the apparatus may include a heat transfer block installed in the lamp, a heat pipe having one end installed in the heat transfer block, and a heat radiator having the other end of the heat pipe installed and dissipating heat from the outside air.

The lamp may be an LED.

The LED may be provided with a wire for supplying power to the light emitting surface or side surface to maximize the contact area with the heat transfer block.

The heat transfer block may have a flat contact surface such that a lamp is in close contact with the lamp, and a rear surface thereof may have a groove formed to insert the heat pipe.

The heat transfer block may be made of a material having high heat transfer efficiency.

The heat pipe may have a structure in which the tip contacting the radiator is flattened to form a plane.

The radiator may include a heat sink and a heat sink fin formed on an outer surface of the heat sink.

In addition, the radiator may be a housing structure in the form of a container in which the heat sink has an inner space. Thus, the radiator itself may serve as an outer case forming the exterior of the lighting device.

On the other hand, the street lamp includes a support, a lighting lamp installed on the support, a heat dissipation device for dissipating the heat of the lamp to the outside, the heat dissipation device is a heat transfer block which is installed in contact with the heat generating surface of the lamp, the heat transfer block The heat pipe is provided at one end, and the other end of the heat pipe is installed, and may include a radiator heat radiation to the outside air.

The lamp may be an LED (light emitting diode).

The radiator may include a heat sink and a heat sink fin formed on an outer surface of the heat sink.

In addition, the radiator may have a housing structure in the form of a container in which the heat sink has an inner space, and a plurality of lamps may be installed in the housing.

As such, the device can obtain more efficient and excellent heat dissipation effect without using power for LED heat dissipation.

In addition, it is possible to extend the life of the LED by increasing the heat dissipation efficiency. Especially, the 100W or more street light lamp equipped with the high efficiency LED of 10W or more has dramatically reduced the service life of the conventional one or two years to at least 4-5 years. It can be extended.

In addition, compared with the conventional apparatus, components such as a cooling fan for LED heat dissipation are unnecessary, and thus the configuration can be simplified, and manufacturing cost can be reduced to increase cost competitiveness.

In addition, the heat pipe can be used semi-permanently.

In addition, the structure is simple, easy to repair, weight and size can be reduced, and there is a strong shock resistance.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same structure, element or part that appears in more than one figure the same reference numerals are used in different embodiments to indicate corresponding or similar features.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the term "comprising" embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Commonly defined terms used are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

Embodiments of the invention described with reference to a perspective view specifically illustrate an ideal embodiment of the invention. As a result, various variations of the illustration, for example variations in the manufacturing method and / or specification, are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture. For example, the regions shown or described as being flat may have characteristics that are generally coarse / rough and nonlinear. Also, the portion shown as having a sharp angle may be rounded. Accordingly, the regions shown in the figures are only approximate in nature, and their forms are not intended to depict the exact form of the regions and are not intended to narrow the scope of the invention.

1 illustrates a street lamp having a heat dissipation device according to the present embodiment.

In the present embodiment, a structure in which the heat dissipation device is applied to a street lamp will be described as an example. However, the apparatus is not limited thereto, and may be applicable to various devices for lighting such as headlamps or indoor indoor lights of automobiles as well as street lamps.

According to the drawings, the street light 10 is a lighting device including a lamp (12) installed on the ground and standing vertically, and a lamp installed at the tip of the frame extending from the top of the support (12) to irradiate light ( 20) and a heat dissipation device 30 for dissipating heat of the lamp to the outside.

The lighting device 20 refers to an integrated structure that is installed on the support 12 and supports the lamp, and the lamp irradiates light to the outside through a transparent window installed at the bottom of the lighting device 20. In this embodiment, the lamp is made of a high brightness LED (LED).

The support 12 is a tubular structure having a predetermined outer diameter, and is not particularly limited in shape, size and structure.

The street lamp 10 is a high heat generated from the lamp to the heat dissipation to the outside more quickly through the heat dissipation device (30).

Hereinafter, the heat dissipation device 30 will be described.

2 and 3 show a heat dissipation device according to the present embodiment.

According to the above-described drawings, the heat dissipation device 30 includes a heat transfer block 31 installed in a lamp, a heat pipe 32 having one end installed in the heat transfer block 31, and the other end of the heat pipe 32. It includes a radiator 40 is installed and the heat radiation to the outside air.

In the present embodiment, a structure in which a lamp is formed of a high brightness LED (LED: light emitting diode) 22 as in the street lamp 10 will be described as an example. The LED is a device in which a light emitting chip that converts electricity into infrared rays or light using characteristics of a compound semiconductor is mounted in a lead frame and packaged into a mold. For example, the LED has a structure in which a front surface forms a light emitting surface and a rear side of the lead frame is exposed to form a heat dissipating surface.

The LED 22 has a heat dissipation surface opposite to the light emitting surface is installed in close contact with the heat transfer block 31 to achieve heat transfer.

A heat transfer material such as a thermally conductive grease, a compound, or silicon may be applied to the contact surface between the heat dissipation surface of the LED 22 and the heat / moisture block 31 for more efficient heat transfer.

The heat transfer block 31 has a structure in which one surface forms a flat contact surface such that the LED 22 is in close contact with the heat transfer block 31, and a groove 33 is formed in the rear surface so that the heat pipe 32 is inserted therein. The heat transfer block 31 is not particularly limited as long as it is a material having high heat transfer efficiency. In the present embodiment, the heat transfer block 31 is made of aluminum or copper.

A heat transfer material such as thermal conductive grease, compound, or silicon may be applied to the contact surface between the inner surface of the groove 33 of the heat transfer block 31 and the tip of the heat pipe 32.

The heat pipe 32 is a tube structure in the form of a long elongated bar. The heat pipe 32 is a structure in which a working fluid transfers heat through a phase change process between gas and liquid in a sealed container. Accordingly, by moving the heat using latent heat, it is possible to exhibit a very large heat transfer capacity. The heat pipe 32 includes a sealed container, a working fluid and a capillary inside the container, and is classified into various types according to the type or internal structure of the working fluid. Since the heat pipe 32 has many technologies disclosed at the level of those skilled in the art, a description thereof will be omitted.

In the present embodiment, the heat pipe 32 has a structure in which a tip installed in the heat transfer block 31 has a cylindrical cross section and a tip in contact with the radiator 40 is flattened to form a flat surface. In addition, the heat pipe 32 has a structure that is bent at an angle of 90 degrees. This is for arranging the LED 22 installed in the heat transfer block 31 toward the front side of the radiator 40, which is not limited thereto and may be variously changed in design.

Here, the radiator 40 includes a heat sink 41 in contact with the outside air, and a heat sink fin 42 formed on the outer surface of the heat sink 41. The heat dissipation plate 41 is a plate structure and the heat dissipation fin 42 is integrally formed on the opposite side of the side on which the heat pipe 32 is installed. In the present embodiment, the heat sink 41 has a structure exposed to the outside. The heat sink 41 and the heat dissipation fins 42 are in direct contact with the outside air to finally heat exchange the heat of the LED 22.

As shown in FIG. 2, the heat pipe 32 is fixed to the heat sink 41 via a fixing bracket 43. A heat transfer material such as thermal conductive grease, compound, or silicon may be applied to the contact surface between the heat pipe 32 and the heat dissipation surface for more efficient heat transfer.

4 and 5 show the coupling structure of the LED 22, the heat absorbing block and the heat pipe in more detail.

As shown, the LED 22 has a structure in which a wire 24 connected to the lead frame is provided toward the light emitting surface to supply power to the light emitting chip.

Accordingly, the LED 22 may contact the heat transfer block 31 with the entire heat dissipation surface without interfering with the wires 24 to maximize the contact area with the heat transfer block 31. Therefore, it is possible to maximize the heat transfer efficiency between the LED 22 and the heat transfer block 31.

The heat transfer block 31 has a hole 34 penetrating the front surface of the heat transfer block 31 has a structure in which the electric wire 24 connected to the LED 22 exits through the hole 34 to the outside. The wire 24 passing through the hole 34 of the heat transfer block 31 is provided with a connector 26 at the tip.

In addition, bolt coupling holes 35 are formed at each corner of the LED 22 to couple the heat transfer block 31 and the LED 22, and the female screw holes 36 are formed on the front surface of the heat transfer block 31 corresponding thereto. ) Is formed. The LED 22 is tightly fixed to the heat transfer block 31 through the fastening bolt 37.

6 shows another embodiment of the present heat dissipation device.

As shown in FIG. 6, the heat dissipation device 30 includes a heat transfer block 31 installed on an LED 22 that is a lamp, and a heat pipe 32 having one end installed on the heat transfer block 31. The other end of the pipe (32) is installed and includes a radiator (50) that radiates heat to the outside air. The radiator 50 includes a heat dissipation plate 51 formed in a container shape having an internal space and in which the heat pipe 32 is closely installed, and a heat dissipation fin 52 formed on an outer surface of the heat dissipation plate 51. .

Since the structure of the other components except for the structure of the radiator 50 is the same as the structure already mentioned, the same reference numerals are given, and the description thereof will be omitted.

In this embodiment, the heat sink 51 has a housing structure, and the heat sink 50 itself serves as an outer case forming an external shape of the lighting device 20 of FIG. 2 provided in the street lamp 10 of FIG. 2. . FIG. 7 illustrates a structure in which the heat sink 51 of the heat sink 50 forms a rear case and the front panel 60 is installed on the front surface of the heat sink 51 to serve as a housing of the lighting device.

In the present embodiment, a plurality of heat pipes 32 are arranged in the bottom of the heat sink 51, and LEDs 22, which are lamps, are installed at the ends of the heat pipes 32 through heat transfer blocks 31. do. In addition, since the heat sink 51 forms a housing in a container shape, a component part such as a circuit unit 70 for controlling the LED 22 may be additionally installed on one side of the heat sink 51. That is, in the heat dissipation device 30 of the present embodiment, the case of the lighting device 20 becomes the heat dissipation plate 51.

Accordingly, the heat generated from the LED 22 is transferred to the heat sink 51, which is a case of the lighting device 20, through the heat transfer block 31 and the heat pipe 32, so that the front surface of the heat sink 51 and the heat sink fin 52 are transferred to the heat sink 51. Heat radiation to the outside air.

Hereinafter, the operation of the apparatus will be described.

The high brightness LED 22, which is a lamp, generates very high heat when used. Heat generated from the LED 22 is transferred from the LED 22 to the heat transfer block 31 and quickly transferred to the heat sinks 41 and 51 through the heat pipe 32 installed in the heat transfer block 31.

The heat pipe 32 installed in the heat transfer block 31 quickly transfers heat transferred to the heat transfer block 31 to the other end. Heat is rapidly transferred to the heat sinks 41 and 51 through the heat pipe 32 and heat exchanges with the outside air through the heat radiation fins 42.52 formed on the front surfaces of the heat sinks 41 and 51 and the heat sinks 41 and 51.

In this way, the device transmits heat generated directly from the LED 22 through the heat pipe 32 to the heat sinks 41 and 51, which are cases of the lighting device 20, to radiate heat to the outside air.

Therefore, a rapid and efficient heat dissipation can be achieved without a component such as a blower fan for conventional heat dissipation. In addition, since the heat dissipation fins 42 and 52 formed on the heat dissipation plates 41 and 51 are exposed to the outside and directly contact the outside air, the natural heat dissipation effect can be maximized.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

1 is a schematic side cross-sectional view showing a street lamp having the present lamp heat dissipation device.

2 is a schematic perspective view of the lamp heat dissipation device according to the present embodiment.

3 is a cross-sectional view showing a lamp heat dissipation device according to the present embodiment.

4 is an exploded perspective view of the lamp heat dissipation device according to the present embodiment.

5 is a perspective view showing a coupling structure of the lamp heat dissipation device according to the present embodiment.

6 is a perspective view illustrating a lamp heat dissipation device according to another embodiment.

7 is a cross-sectional view of a lamp heat dissipation device according to another embodiment.

Explanation of symbols on the main parts of the drawings

10: street light 12: prop

20: lighting device 22: LED

24: wire 26: connector

30: heat dissipation device 31: heat transfer block

32: heat pipe 33: groove

34: hole 40,50: radiator

41,51: heat sink 42,52: heat sink fin

Claims (10)

A heat transfer block installed in the lamp, A heat pipe having one end installed in the heat transfer block, Radiator is provided with the other end of the heat pipe is heat radiated to the outside air Lamp radiator comprising a. The method of claim 1, The radiator comprises a heat sink and a heat radiation fin including a heat sink fin formed on the outer surface of the heat sink. The method of claim 2, The heat sink is a lamp heat dissipation device having a structure of a container having an inner space. 4. The method according to any one of claims 1 to 3, The lamp is an LED lamp radiator. The method of claim 4, wherein The heat transfer block is a lamp heat dissipation device having a structure in which a flat surface is formed so that the surface is in close contact with the lamp and the rear surface is a groove so that the heat pipe is inserted. And a lighting device including a support, a lighting lamp installed on the support, and a heat dissipation device for radiating heat of the lamp to the outside. The heat dissipating device includes a heat transfer block installed in contact with a heat generating surface of the lamp, a heat pipe having one end installed on the heat transfer block, and a heat dissipator having the other end of the heat pipe installed and dissipating heat from the outside air. The method of claim 6, The radiator includes a heat sink and a heat dissipation fin formed on an outer surface of the heat sink. The method of claim 7, wherein The heat dissipator is a street lamp having a heat sink having a structure of a container having an inner space to form an outer case of the lighting device. The method according to any one of claims 6 to 8, The lamp is an LED street light. The method of claim 9, The heat transfer block is a street lamp having a flat surface to form a flat contact surface so that the lamp is in close contact with the back of the heat pipe is formed so that the heat pipe is inserted.
KR1020090072945A 2009-08-07 2009-08-07 Cooling and heat radiation device of lamp and street light for using the same KR20110015300A (en)

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KR1020090072945A KR20110015300A (en) 2009-08-07 2009-08-07 Cooling and heat radiation device of lamp and street light for using the same

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Application Number Priority Date Filing Date Title
KR1020090072945A KR20110015300A (en) 2009-08-07 2009-08-07 Cooling and heat radiation device of lamp and street light for using the same

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KR20110015300A true KR20110015300A (en) 2011-02-15

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101282103B1 (en) * 2012-11-21 2013-07-04 엄원섭 Light emitting diode illuination device
KR101407072B1 (en) * 2012-07-13 2014-06-13 주식회사 케이에스비 Streetlight having exposured heat sink applicating heat pipe
US8827522B2 (en) 2012-08-09 2014-09-09 Hyundai Motor Company Moisture generation preventing structure of vehicle head lamp
US9068713B2 (en) 2011-09-20 2015-06-30 Hyundai Motor Company Dew condensation delay device of head lamp for vehicle
CN105570779A (en) * 2015-11-06 2016-05-11 钱月珍 Energy-saving LED street lamp with high heat dissipation efficiency

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9068713B2 (en) 2011-09-20 2015-06-30 Hyundai Motor Company Dew condensation delay device of head lamp for vehicle
KR101407072B1 (en) * 2012-07-13 2014-06-13 주식회사 케이에스비 Streetlight having exposured heat sink applicating heat pipe
US8827522B2 (en) 2012-08-09 2014-09-09 Hyundai Motor Company Moisture generation preventing structure of vehicle head lamp
KR101282103B1 (en) * 2012-11-21 2013-07-04 엄원섭 Light emitting diode illuination device
CN105570779A (en) * 2015-11-06 2016-05-11 钱月珍 Energy-saving LED street lamp with high heat dissipation efficiency

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