KR20130049452A - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
KR20130049452A
KR20130049452A KR1020110114489A KR20110114489A KR20130049452A KR 20130049452 A KR20130049452 A KR 20130049452A KR 1020110114489 A KR1020110114489 A KR 1020110114489A KR 20110114489 A KR20110114489 A KR 20110114489A KR 20130049452 A KR20130049452 A KR 20130049452A
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KR
South Korea
Prior art keywords
shielding member
heat sink
circuit board
hole
lens cover
Prior art date
Application number
KR1020110114489A
Other languages
Korean (ko)
Inventor
김형진
윤상호
이기언
최경식
장세인
이윤석
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 KR1020110114489A priority Critical patent/KR20130049452A/en
Publication of KR20130049452A publication Critical patent/KR20130049452A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69—Details of refractors forming part of the light source
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • 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
    • F21Y2101/00—Point-like light sources
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

PURPOSE: A lighting device is provided to prevent penetration of moisture or foreign substances into the inner space of the lighting device, and thus to prevent degradation of light distribution efficiency, disconnection and outbreak of fire due to the penetration of the moisture and foreign substances, by sealing the inner space perfectly. CONSTITUTION: A lighting device(100) includes a circuit board(110), a heat sink(120), a lens cover(130), an electric wire harness(140) and a shielding member(150). A light emitting device is mounted in the circuit board. The heat sink is arranged in the rear of the circuit board. The lens cover is combined to the front of the heat sink in order to form a closed space where the circuit board is accommodated. The electric wire harness is arranged to pass through a through-hole part formed in one side of the heat sink, and is connected to the circuit board. The shielding member is comprised in the electric wire harness, and is inserted into the through-hole part in order to shield the through-hole part under the state that the electric wire harness is arranged to pass through the through-hole part.

Description

Lighting device {LIGHTING DEVICE}

The present invention relates to a lighting device, and more particularly, to a lighting device that can improve waterproof performance and can be easily applied to various products.

Light Emitting Diode (LED) is a semiconductor device that emits light when current flows, and is a PN junction diode made of gallium arsenide (GaAs) and gallium nitride (GaN) optical semiconductors, and converts electrical energy into light energy. It is an electronic component.

In recent years, blue LEDs and ultraviolet LEDs realized using nitrides excellent in physical and chemical properties have appeared, and white light or other monochromatic light can be made using blue or ultraviolet LEDs and fluorescent materials, .

The light emitting device has advantages such as long lifetime, miniaturization and light weight, strong directivity of light and low voltage driving, and is resistant to shock and vibration, and does not require preheating time and complicated driving. It is possible.

For example, the application range of LEDs has recently been expanded from small lights of mobile terminals to general lighting in indoors and outdoors, automobile lights, and backlights for large LCDs.

Meanwhile, the street lamp refers to a lighting device installed along a street for the safety and security of traffic. Various types of street lamps may be selectively used depending on the installation place such as a highway, a general road, a sidewalk, a residential area, and the like. Recently, in consideration of power consumption, light bulb life, brightness and diffusion range, the use of streetlights or lamps using light emitting devices such as high-brightness light emitting diodes as a light source has increased.

In the outdoor lighting device as described above, the reflection efficiency may be reduced due to the invasion of insects or various foreign matters, or short circuits and fires may be generated by moisture and dust. In order to solve this problem, a structure for sealing the inside of the lighting device from the outside is essential.

Embodiment of the present invention provides a lighting device that can completely seal the inside of the lighting device to improve the waterproof performance.

In addition, an embodiment of the present invention provides a lighting device having a simple structure and which can be easily applied to a small module.

In addition, an embodiment of the present invention provides a lighting device that can effectively prevent any deviation of the wire harness by the external force.

According to an embodiment of the present invention, a circuit board on which a light emitting element is mounted, a heat sink disposed on a rear surface of the circuit board, and a front portion of the heat sink to form an enclosed space in which the circuit board is accommodated. A lens cover to be coupled, a wire harness disposed through the through hole formed on one side of the heat sink and connected to the circuit board, and a wire harness provided in the wire harness and disposed through the through hole. It provides a lighting device including a shielding member inserted into the through-hole portion to shield the through-hole portion in a state.

The through hole portion and the shielding member may be formed in a cross-sectional shape other than a circular shape to prevent the shielding member from being arbitrarily rotated inside the through hole portion.

According to one side, the lens cover may be provided with a separation prevention portion connected to the shielding member disposed in the through-hole portion when the heat sink and the lens cover is coupled to prevent the detachment of the shielding member from the through-hole portion optionally. have.

The detachment preventing part may be formed in a protrusion shape protruding from the lens cover toward the shielding member. The shielding member may be provided with a separation prevention groove into which the separation prevention portion is inserted.

The separation preventing grooves may be formed on both side surfaces of the shielding member, respectively. In this case, the separation prevention part, the first separation prevention projections which are inserted through the first separation prevention groove formed in the left side of the shield member, and the second insertion prevention grooves are inserted into the second separation prevention groove formed on the right side of the shielding member 2 may be provided with a departure prevention protrusion.

According to one side, the shielding member may be formed of an elastic material in a cross-sectional shape larger than the through-hole portion.

According to one side, the outer surface of the shielding member may be provided with at least one pressing projection protruding in a ring shape along the circumference of the shielding member so as to be pressed on the inner surface of the through hole when the shielding member is inserted.

According to one side, the lighting device further comprises a gasket member provided in the contact portion of the lens cover and the heat sink in order to prevent moisture from penetrating into the sealed space formed by the lens cover and the heat sink. It may include.

According to one side, the lighting device may further include a heat transfer member disposed between the circuit board and the heat sink to transfer heat generated from the circuit board to the heat sink. The heat transfer member may be formed of a material having a higher heat transfer coefficient than the circuit board and the heat sink.

According to one side, the front portion of the heat sink may be formed with a receiving portion for receiving the circuit board. A heat dissipation fin for dissipating heat transferred from the circuit board to the outside may be formed at a rear portion of the heat sink.

The through hole may be formed at a side of the accommodation portion so as to communicate with the inside of the accommodation portion.

According to one side, the plurality of light emitting devices may be arranged in a predetermined pattern on the circuit board. The lens cover may have a light distribution lens part formed at a portion corresponding to the light emitting elements.

The lighting apparatus according to the embodiment of the present invention can completely seal the internal space of the lighting apparatus, and thus can improve the waterproof performance of the lighting apparatus. Therefore, in one embodiment of the present invention can effectively prevent the penetration of moisture or foreign matter into the interior of the lighting device, it is possible to prevent the reduction in light distribution efficiency, disconnection and fire caused by the penetration of the moisture and foreign matter.

In addition, the lighting device according to an embodiment of the present invention, since the structure is simple and easy to apply to various kinds of lighting devices as a whole, it can be easily applied to a small module.

In addition, the lighting apparatus according to an embodiment of the present invention, even if the number of application of the light emitting device is changed according to the design conditions and circumstances, it is possible to flexibly cope with a high degree of design flexibility, it may be useful for common and standardization of the lighting device .

In addition, in the lighting apparatus according to the embodiment of the present invention, since the detachment of the shielding member is prevented by the detachment preventing portion of the lens cover, the phenomenon that the wire harness is arbitrarily separated from the lighting apparatus by a force or an impact pulled from the outside. Can be prevented.

1 is a perspective view showing a lighting apparatus according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the lighting apparatus shown in FIG. 1.
3 and 4 are perspective views showing main parts of the lighting apparatus shown in FIG. 1, respectively.
FIG. 5 is a perspective view showing a cross section of an essential part of the lighting apparatus shown in FIG. 1. FIG.
6 is a cross-sectional view illustrating a cross section taken along line AA of FIG. 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

1 is a perspective view showing a lighting device 100 according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing the lighting device 100 shown in FIG. 3 and 4 are perspective views showing main parts of the lighting device 100 shown in FIG. 1, and FIG. 5 is a perspective view showing a cross section of main parts of the lighting device 100 shown in FIG. 1, and FIG. 6. Is a cross-sectional view showing a cross section taken along the line AA of FIG. 1.

1 to 4, a lighting device 100 according to an embodiment of the present invention includes a circuit board 110, a heat sink 120, a lens cover 130, a wire harness 140, and a shielding member. And 150.

The light emitting device 112 may be mounted on the circuit board 110, and a circuit for controlling the operation of the light emitting device 112 may be formed. The circuit board 110 may be a circuit board made of metal or plastic.

Here, the plurality of light emitting devices 112 may be arranged on the circuit board 110 in various patterns. Hereinafter, although the LED is used as the light emitting device 112 in the present embodiment, the present invention is not limited thereto and various types of devices may be used according to design conditions and situations.

1 to 5, the heat sink 120 is a member that cools the light emitting element 112 and the circuit board 110 by emitting heat generated from the light emitting element 112 to the outside. Therefore, the heat sink 120 may be formed of a metallic material having excellent heat dissipation performance and heat transfer performance. The heat sink 120 may be disposed on the rear surface of the circuit board 110.

An accommodating part 122 for accommodating the circuit board 110 may be formed in the front part of the heat sink 120, and heat transmitted from the circuit board 110 may be discharged to the outside in the rear part of the heat sink 120. The heat dissipation fins 124 may be formed.

Here, the circuit board 110 and the lens cover 130 may be mounted on the accommodation part 122. In particular, the accommodating part 122 and the lens cover 130 of the heat sink 120 may form an enclosed space S that is blocked from the outside, and the circuit board 110 is disposed in the enclosed space S. Can be. Therefore, since external moisture or foreign matter does not penetrate into the sealed space S, the light emitting device 112 and the circuit board 110 may be safely protected from moisture or foreign matter.

The heat dissipation fins 124 may be formed to be spaced apart from each other at the rear portion of the heat sink 120. The heat dissipation fin 124 may be formed to have a thin thickness to increase heat dissipation performance.

1 to 5, the lens cover 130 is a member that appropriately distributes light generated in the light emitting element 112 in a desired pattern and direction. The lens cover 130 may be formed of glass or plastic of a transparent material. The lens cover 130 as described above may be coupled to the accommodating part 122 of the heat sink 120, and together with the heat sink 120, may form an enclosed space S in which the circuit board 110 is accommodated. have.

The plurality of light emitting devices 112 may be disposed on the circuit board 110 in a predetermined pattern. Accordingly, the light distribution lens unit 132 may be formed in the lens cover 130 at portions corresponding to the light emitting devices 112. The light distribution lens units 132 may be formed to have various reflection angles and refractive indices according to light distribution characteristics of the lighting apparatus 100. The light distribution lens units 132 may be integrally formed on the lens cover 130.

1 to 5, the wire harness 140 is a member that transmits power or a control signal to the circuit board 110. One end of the wire harness 140 may be connected to the circuit board 110. To this end, one end of the wire harness 140 and one side of the circuit board 110 may be provided with a connector 142 of a structure capable of assembling and separating.

Meanwhile, a through hole 126 may be formed at one side of the heat sink 120. The through hole part 126 may be formed on the side surface of the accommodating part 122 to communicate with the sealed space S in the accommodating part 122. The wire harness 140 may be penetrated through the through hole 126.

1 to 6, the shielding member 150 is a member that shields the through hole part 126 to prevent moisture or foreign matter from penetrating into the sealed space S through the through hole part 126. to be. The shielding member 150 may be formed of an elastic material and may have a larger cross-sectional shape than the through hole part 126. Therefore, the shielding member 150 may be inserted into the through-hole portion 126 while being elastically compressed, whereby the shielding performance of the shielding member 150 may be stably maintained.

The shielding member 150 may shield the through hole 126 in a state where the wire harness 140 is disposed. That is, the shielding member 150 may be provided in the wire harness 140, and when the wire harness 140 is disposed in the through hole 126, the shield member 150 may be disposed in the through hole part 126 together with the wire harness 140. . For example, the shielding member 150 may be formed in a conical shape pointed toward the through hole 126, and the wire harness 140 may be disposed to penetrate the center of the shielding member 150.

As illustrated in FIGS. 1 to 6, the shielding member 150 may include a shielding member body 151, a crimping protrusion 152, a rotation preventing portion 153, and a connecting portion 154.

Here, the shielding member main body 151 may be formed in a conical shape, and may be formed to be inclined or stepped in a direction in which the diameter is reduced toward the through hole part 126. Hereinafter, in the present exemplary embodiment, the shielding member main body 151 is sharply formed in a structure in which the diameter is stepped downward toward the through hole part 126.

In addition, the pressing protrusion 152 may protrude in a ring shape along a circumference of one side of the outer surface of the shield member body 151. The pressing protrusion 152 may be pressed on the inner side surface of the through hole 126 when the shielding member 150 is inserted. Therefore, the airtightness between the through hole part 126 and the shielding member 150 may be improved by the crimping protrusion 152.

At least one compression protrusion 152 may be formed on an outer surface of the shielding member 150. Hereinafter, although two compression protrusions 152 are described as being formed on the outer surface of the shielding member 150, the present invention is not limited thereto and may be variously modified according to design conditions and situations of the lighting device 100.

In addition, the rotation preventing part 153 is a member for preventing the shielding member 150 from being arbitrarily rotated in a state where the shielding member 150 is inserted into the through hole 126. The anti-rotation part 153 may be formed to protrude from a portion of the shielding member body 151 corresponding to the inlet of the through hole 126. The inlet of the through hole 126 and the rotation preventing part 153 may be formed in a cross-sectional shape other than a circular shape. Therefore, the rotation preventing part 153 may be prevented from being rotated by the through hole part 126.

Hereinafter, although the inlet and the rotation preventing part 153 of the through hole 126 are described as being formed in an elliptical shape, the present invention is not limited thereto and may be formed in a polygonal or semi-circular cross-sectional shape according to design conditions and circumstances. .

In addition, the connection part 154 is a member that is connected to the separation prevention part 134 formed on the lens cover 130 when the lens cover 130 and the heat sink 120 are coupled to prevent any separation of the shielding member 150. .

The separation prevention part 134 is a member protruding from the lens cover 130, and may prevent the shielding member 150 from being detached from the through hole part 126. The separation prevention unit 134 may be connected to the shielding member 150 disposed in the through hole 126 when the heat sink 120 and the lens cover 130 are coupled to each other, and the shielding member 150 may be the separation preventing unit 134. Movement and rotation can be restricted by The departure prevention part 134 may be formed in a protrusion shape protruding from the lens cover 130 toward the connection part 154 of the shielding member 150.

Here, a guide groove 128 into which the departure prevention part 134 is fitted may be formed in the accommodation part 122 of the heat sink 120 so that the departure prevention part 134 may be connected to the shielding member 150. The guide groove 128 may be formed to communicate with the through hole 126, and may also serve to guide the departure prevention part 134 to an accurate position connected with the connection part 154.

A separation prevention groove 155 into which the separation prevention part 134 is inserted may be formed in the connection part 154 of the shielding member 150. That is, when the lens cover 130 is coupled to the heat sink 120, the departure prevention part 134 may be inserted into the departure prevention groove 155, and the separation prevention part 134 and the departure prevention groove 155 may be formed. Movement of the shielding member 150 may be limited by mutual interference.

The departure preventing grooves 155 may be formed on both side surfaces of the connection part 154, respectively. That is, the departure prevention groove 155 may include a first departure prevention groove 155a formed on the left side of the connection part 154 and a second departure prevention groove 155b formed on the right side of the connection part 154. . Accordingly, the departure prevention part 134 may include a first departure prevention protrusion 134a inserted into the first departure prevention groove 155a and a second departure prevention insertion part penetrated into the second departure prevention groove 155b. The protrusion 134b may be provided.

Meanwhile, referring to FIGS. 2, 3, and 5, the lighting apparatus 100 according to an embodiment of the present invention may include a gasket member 160 provided at a contact portion between the lens cover 130 and the heat sink 120. It may further include.

Since the contact portion of the lens cover 130 and the heat sink 120 as described above is an edge portion of the lens cover 130 and the receiving portion 122, the gasket member 160 may be formed in a rectangular ring shape with an open center. Can be. Therefore, since the gasket member 160 may further improve the airtightness of the contact portion between the lens cover 130 and the heat sink 120, the sealed space S in which the light emitting element 112 and the circuit board 110 are disposed. It is possible to more reliably prevent infiltration of moisture or foreign matter into the interior of the cabinet.

The lens cover 130, the heat sink 120, and the gasket member 160 may be firmly coupled using the plurality of first fastening members 162. To this end, a plurality of first fastening holes may be formed in the lens cover 130, the heat sink 120, and the gasket member 160.

Meanwhile, referring to FIG. 2, the lighting apparatus 100 according to an embodiment of the present invention may further include a heat transfer member 170 disposed between the circuit board 110 and the heat sink 120.

The heat transfer member 170 is a member that smoothly transfers heat generated from the circuit board 110 to the heat sink 120. Therefore, the heat transfer member 170 may be formed of a material having a higher heat transfer coefficient than the circuit board 110 and the heat sink 120. For example, a heat transfer member 170 may be a thermal tape, a thermal film, a thermal grease, a metal plate having a high thermal conductivity such as copper, or the like.

The circuit board 110 may be mounted to the receiving portion 122 of the heat sink 120 as a plurality of second fastening members 172. If the heat transfer member 170 is formed of a solid material, the heat transfer member 170 may be mounted to the accommodating part 122 of the heat sink 120 as the second fastening member 172 together with the circuit board 110. To this end, a plurality of second fastening holes may be formed in the circuit board 110, the heat transfer member 170, and the heat sink 120.

Looking at the assembly process of the lighting device 100 according to an embodiment of the present invention configured as described above are as follows.

First, the wire harness 140 is disposed to penetrate through the through hole 126 of the heat sink 120. Then, the shielding member 150 provided in the wire harness 140 is inserted into the through hole 126 to shield the through hole 126 with the shielding member 150.

At this time, the rotation preventing portion 153 of the shielding member 150 is disposed at the inlet of the through hole 126, the shielding member 150 due to the shape of the inlet and the rotation preventing portion 153 of the through hole 126. Rotation can be prevented.

When the wire harness 140 and the shielding member 150 are installed as described above, the wire harness 140 and the connector 142 provided on the circuit board 110 may be connected to each other, and the second fastening member 172 may be connected to the wire harness 140 and the shielding member 150. The circuit board 110 and the heat transfer member 170 may be mounted to the receiving portion 122 of the heat sink 120 using the.

Thereafter, the gasket member 160 is disposed at the edge portion of the accommodating portion 122 of the heat sink 120, and the lens cover 130 is disposed at the gasket member 160. Accordingly, the gasket member 160 is disposed between the lens cover 130 and the receiving portion 122 of the heat sink 120.

Then, when the lens cover 130 and the gasket member 160 are attached to the edge of the receiving portion 122 of the heat sink 120 by using the first fastening member 162, the assembly of the lighting device 100 is completed. do.

When the lens cover 130 is mounted as described above, the separation prevention part 134 of the lens cover 130 is inserted into the guide groove 128 of the receiving part 122 to connect the connection part 154 of the shielding member 150. Connected with That is, the first departure prevention protrusion 134a of the departure prevention part 134 is inserted into the first departure prevention groove 155a of the connection part 154, and the second departure prevention protrusion 134b of the departure prevention part 134. Is inserted into the second separation preventing groove 155b of the connecting portion 154.

At this time, since the shielding member 150 is in a state in which movement and rotation are constrained by the separation prevention part 134, the shielding member 150 is pulled from the outside or the shielding member 150 is pulled in the direction in which the wire harness 140 is pulled. Even if an impact is transmitted to the 150, the shielding member 150 is not detached from the through hole 126 arbitrarily. Therefore, intrusion of moisture and foreign matters due to the removal of the shielding member 150 can be prevented, and the problem that the wire harness 140 is removed from the circuit board 110 together with the shielding member 150 can be prevented.

As described above, the embodiments of the present invention have been described by specific embodiments, such as specific components, and limited embodiments and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is limited to the above embodiments. Various modifications and variations can be made by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: lighting device
110: circuit board
120: heat sink
130: lens cover
140: wire harness
150: shielding member
160: gasket member
170: heat transfer member
S: airtight space

Claims (12)

A circuit board on which a light emitting device is mounted;
A heat sink disposed on a rear surface of the circuit board;
A lens cover coupled to the front portion of the heat sink to form an enclosed space in which the circuit board is accommodated;
A wire harness disposed through the through hole formed at one side of the heat sink and connected to the circuit board; And
And a shielding member provided in the wire harness and inserted into the through hole part so that the through hole part is shielded while the wire harness is disposed to penetrate the through hole part.
The method of claim 1,
The through-hole portion and the shielding member may be formed in a cross-sectional shape other than a circular shape to prevent the shielding member from rotating inside the through-hole portion.
The method of claim 1,
The lens cover is provided with a separation prevention portion is connected to the shield member disposed in the through-hole portion when the heat sink and the lens cover is coupled to prevent the detachment of the shield member from the through-hole portion.
The method of claim 3,
The separation prevention portion is formed in a projection shape protruding toward the shield member from the lens cover,
The shielding member is provided with a separation prevention groove is inserted into the shielding member.
5. The method of claim 4,
The separation preventing grooves are formed on both side surfaces of the shielding member,
The release preventing part may include a first release preventing protrusion inserted into the first release preventing groove formed on the left side of the shielding member, and a second release insert inserted into the second release preventing groove formed on the right side of the shielding member. Lighting device with prevention projections.
The method according to any one of claims 1 to 5,
The shielding member is a lighting device formed of an elastic material in a cross-sectional shape larger than the through-hole portion.
The method according to any one of claims 1 to 5,
The outer surface of the shielding member is provided with at least one pressing projection protruding in a ring shape along the circumference of the shielding member so as to be pressed to the inner surface of the through hole when the shielding member is inserted.
The method according to any one of claims 1 to 5,
And a gasket member provided at a contact portion of the lens cover and the heat sink to prevent moisture from penetrating into the sealed space formed by the lens cover and the heat sink.
The method according to any one of claims 1 to 5,
And a heat transfer member disposed between the circuit board and the heat sink to transfer heat generated from the circuit board to the heat sink.
And the heat transfer member is formed of a material having a heat transfer coefficient higher than that of the circuit board and the heat sink.
The method according to any one of claims 1 to 5,
The front portion of the heat sink is provided with a receiving portion for receiving the circuit board,
And a radiating fin formed at a rear portion of the heat sink to radiate heat transferred from the circuit board to the outside.
The method of claim 10,
The through hole is formed on the side of the receiving portion in communication with the interior of the receiving portion.
The method according to any one of claims 1 to 5,
The plurality of light emitting devices are arranged in a predetermined pattern on the circuit board,
The lens cover has a light distribution lens unit is formed on the portion corresponding to the light emitting elements, respectively.

KR1020110114489A 2011-11-04 2011-11-04 Lighting device KR20130049452A (en)

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Cited By (11)

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KR101431209B1 (en) * 2014-03-27 2014-08-19 주식회사 성훈라이팅 A heatsink module
KR101476326B1 (en) * 2013-11-28 2014-12-24 삼성유리공업 주식회사 Bar type outdoor light emitting diode lighting apparauts
CN104251390A (en) * 2013-06-27 2014-12-31 欧普照明股份有限公司 Lamp
KR101477688B1 (en) * 2014-09-16 2014-12-31 (주) 파루 Heat sink for led module
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CN104896328A (en) * 2015-05-22 2015-09-09 重庆四联光电科技有限公司 LED lamp dustproof module lens
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CN104251390A (en) * 2013-06-27 2014-12-31 欧普照明股份有限公司 Lamp
KR101500608B1 (en) * 2013-08-01 2015-03-10 주식회사 현대엘이디 Lens type LED module for channel sign
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KR20160131165A (en) 2015-05-06 2016-11-16 한밭대학교 산학협력단 A led lighting installation using a separate heat sink
CN104896328A (en) * 2015-05-22 2015-09-09 重庆四联光电科技有限公司 LED lamp dustproof module lens
US10401015B2 (en) 2015-07-06 2019-09-03 Lg Electronics Inc. Light source module, fabrication method therefor, and lighting device including the same
US10228119B2 (en) 2015-12-14 2019-03-12 Lg Electronics Inc. Light source module
US10317068B2 (en) 2015-12-14 2019-06-11 Lg Electronics Inc. Light source module
KR102186105B1 (en) * 2020-05-18 2020-12-03 (주)엔케이시스템 Light device

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