KR101883323B1 - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
KR101883323B1
KR101883323B1 KR1020110086859A KR20110086859A KR101883323B1 KR 101883323 B1 KR101883323 B1 KR 101883323B1 KR 1020110086859 A KR1020110086859 A KR 1020110086859A KR 20110086859 A KR20110086859 A KR 20110086859A KR 101883323 B1 KR101883323 B1 KR 101883323B1
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South Korea
Prior art keywords
case
heat
air
disposed
light emitting
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KR1020110086859A
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Korean (ko)
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KR20130023823A (en
Inventor
박인수
홍승균
곽재오
김선호
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020110086859A priority Critical patent/KR101883323B1/en
Priority claimed from US14/240,317 external-priority patent/US9739469B2/en
Publication of KR20130023823A publication Critical patent/KR20130023823A/en
Application granted granted Critical
Publication of KR101883323B1 publication Critical patent/KR101883323B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/237Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/235Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69Details of refractors forming part of the light source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/001Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/0055Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by screwing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/60Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/007Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

An embodiment of the present invention relates to a lighting apparatus including a body portion, a light emitting module portion disposed on the body portion, a lens portion covering one side of the light emitting module portion, and a lower case disposed to cover a part of the lens portion, The case is coupled to the body portion, and a part of the lens portion is disposed between the lower case and the body portion.

Description

LIGHTING DEVICE

An embodiment relates to a lighting device.

Light emitting diodes (LEDs) are a type of semiconductor devices that convert electrical energy into light. The light emitting diode has advantages of low power consumption, semi-permanent lifetime, fast response speed, safety, and environmental friendliness compared with conventional light sources such as fluorescent lamps and incandescent lamps. Accordingly, much research has been carried out to replace an existing light source with a light emitting diode, and a light emitting diode has been increasingly used as a light source for lighting devices such as various liquid crystal displays, electric sign boards, and street lights used in indoor and outdoor.

However, when the LED is turned on, much heat is generated, and when the heat can not be smoothly discharged, the lifetime of the LED is shortened, the illuminance is decreased, and the quality characteristic is significantly deteriorated. Therefore, an advantage of the LED lighting device is that the heat dissipation of the LED is smooth.

Korean Patent Laid-Open Publication No. 10-2011-0004715 (Disclosure Date: January 14, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an illumination device having excellent heat radiation efficiency.

In addition, the embodiment provides an illumination device in which the illuminance and lifetime of the light source used in the illumination device are maximized and the quality characteristic is remarkably improved.

The embodiment also provides a lighting apparatus in which the dust introduced into the apparatus is minimized.

Further, the embodiment provides a lighting apparatus which is easy to manufacture and assemble parts.

In an embodiment, the illumination device includes a body portion; A light emitting module portion disposed on the body portion; a lens portion covering one side of the light emitting module portion; And a lower case disposed to cover a part of the lens portion, wherein the lower case is coupled to the body portion, and a portion of the lens portion is disposed between the lower case and the body portion.

In addition, the lower case and the body may be screwed together.

Further, the body part may include a heat dissipating body contacting the other side of the light emitting module part; A radiating fan spaced apart from the radiator and disposed in a direction toward the radiator; And a case covering the heat discharging body and the heat radiating fan.

The lens unit may include an optical unit through which light generated from the light emitting module unit is transmitted and a fixing unit extending outward from the optical unit. The fixing unit may be disposed between the lower case and the body unit .

In another embodiment, the illumination device includes a light emitting module portion; An intermediate body including a heat emitting element disposed on one side of the light emitting module part; A heat radiating fan disposed on the heat radiator; An upper case covering the heat dissipating fan; A lens unit disposed to cover the other side of the light emitting module unit; And a lower case disposed on a part of the lens unit and coupled to the intermediate body to fix the lens unit.

In addition, the lens unit may have a protrusion protruding in a direction in which light generated from the light emitting module unit is emitted.

The lens unit may include an optical unit through which the light generated from the light emitting module unit is transmitted and a fixing unit extending outwardly from the optical unit. The fixing unit may be disposed between the lower case and the middle body .

According to the embodiment, the heat radiation efficiency of the lighting device is remarkably increased.

Further, according to the embodiment, the illuminance and lifetime of the light source are maximized and the quality characteristic is remarkably improved.

In addition, according to the embodiment, in a recessed type lighting apparatus embedded in a ceiling or a wall, effective heat exchange with outside air is achieved.

In addition, the embodiment allows dust to enter into the illumination device to be minimized.

The embodiments also facilitate the manufacture and assembly of components of the lighting apparatus.

1 shows a cross-sectional perspective view of a lighting device according to an embodiment.
2 shows a heat-dissipating fan of a lighting device according to an embodiment.
3 shows a bottom plan view of a lighting device according to another embodiment.
Fig. 4 shows a cross-sectional view taken along line AA in Fig.
5 shows a cross-sectional view of the BB line of Fig.
6 shows a cross-sectional view of the CC line of Fig.
7 shows a plan view of the DD line of Fig.
Figure 8 shows a bottom plan view of a lighting device according to yet another embodiment.
9 is a side view of a lighting device according to another embodiment.
Figure 10 shows various embodiments of the air outlet and air inlet arrangement of the illuminator.
11 shows a perspective view of a lighting device according to another embodiment.
12 shows a bottom plan view of a lighting device according to yet another embodiment.
13 shows a cross-sectional view taken along the line AA in Fig.
Fig. 14 shows a cross-sectional view of the BB line in Fig.
Fig. 15 shows a lens unit of a lighting device according to still another embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the appended drawings illustrate the present invention in order to more easily explain the present invention, and the scope of the present invention is not limited thereto. You will know.

In the drawings, the thickness and size of each layer are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size of each component does not entirely reflect the actual size.

In the description of embodiments according to the present invention, it is to be understood that where an element is described as being formed "on or under" another element, On or under includes both the two elements being in direct contact with each other or one or more other elements being indirectly formed between the two elements. Also, when expressed as "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

1 is a cross-sectional perspective view of a lighting device according to an embodiment.

The lighting apparatus 100 according to an embodiment includes a light emitting module unit 110, a heat emitting unit 120 which is bonded to the light emitting module unit 110 and has a heat dissipating plate around the outer surface thereof, The upper case 150 is disposed inside the upper case 150 and electrically connected to the heat dissipating fan 130 and the LED mounting board 112 to supply power to the heat dissipating fan 130, And a lower case 160 which is fixed to the upper case 150 to fix the light emitting module 110.

Each component will be described in detail as follows.

≪ Light emitting module part &

The light emitting module unit 110 may include one or more LEDs 111 and an LED mounting substrate 112 on which one or more LEDs 111 are mounted. A plurality of LEDs 111 may be arranged on the LED mounting substrate 112, and the number and arrangement of the LEDs 111 arranged may be arbitrarily adjusted according to the required illuminance. The light emitting module unit 110 may employ a configuration in which a large number of LEDs are focused to facilitate handling and mass production.

The LED mounting substrate 112 may be a printed circuit pattern on an insulator and may be a printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB And a COB (Chips On Board) type that can directly bond an unpackaged LED chip on a printed circuit board can be used. In addition, the substrate may be formed of a material that efficiently reflects light, or may be formed of a color whose surface is efficiently reflected, for example, white, silver, or the like.

The LED 111 mounted on the substrate may be a red, green, blue, or white light emitting diode that emits red, green, blue, or white light, respectively, but is not limited thereto.

<Heat radiator>

The heat discharging body 120 may be disposed on the light emitting module unit 110 to conduct heat generated by the light emitting module unit 110 and discharge the heat.

The heat discharging body 120 may have a plurality of heat radiating fins on its surface. The plurality of radiating fins may be arranged radially along the surface of the heat discharging body 120. The shape of the heat discharging body 120 increases the surface area to improve the heat radiation efficiency of the heat discharging body 120.

The heat discharging body 120 is configured such that the air injected to the heat discharging body 120 through the heat radiating fan 130 passes through the surface of the heat discharging body 120 in relation to the heat radiating fan 130 and the lower case 160 And a radiating fin arranged in a predetermined direction so as to be discharged to an air outlet of the lower case 160. For example, the radiating fin of the heat discharging body 120 may be arranged in a direction perpendicular to the direction of the air blown by the heat radiating fan 130 and in a direction toward the air outlet of the lower case 160.

The heat discharging body 120 may be formed of a metal material or a resin material having excellent heat dissipation efficiency, but the present invention is not limited thereto. For example, the material of the heat sink 120 may include at least one of aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), and tin (Sn).

Although not shown in the drawing, a heat sink may be disposed between the light emitting module 110 and the heat sink 120. The heat sink may be formed of a thermally conductive silicone pad or a thermally conductive tape having an excellent thermal conductivity, and the heat generated by the light emitting module unit 110 may be effectively transmitted to the heat sink 120.

<Heat dissipation fan>

2 illustrates a heat dissipation fan 130 of a lighting device 100 according to one embodiment.

The heat radiating fan 130 is disposed on the heat discharging body 120 and can perform forced convection of external air in the lighting apparatus 100 to cool the heat in the lighting apparatus 100.

A power source is applied to the lighting apparatus 100 to illuminate the light in the light emitting module unit 110, and a high temperature is generated when light is emitted. Accordingly, at the same time when the power is supplied, power is also applied to the heat-dissipating fan 130, so that the heat-dissipating fan 130 can operate. Alternatively, the heat-radiating fan 130 may be operated only when the temperature of the heat-sensing sensor in the lighting apparatus 100 becomes equal to or higher than a predetermined temperature.

When the heat-dissipating fan 130 operates, external air is sucked through an air inlet of the lower case 160 to be described later, and the sucked air passes through the heat-dissipating fan 130 and passes through the heat- And the hot air can be discharged to the outside through the air outlet of the lower case 160.

In a specific embodiment, the illumination device 100 may be MR16, the outer diameter of the MR16 may be 50 mm, and the diameter of the heat-dissipating fan 130 may be 30 mm. The heat dissipator 120 may be configured to have a maximum size for heat dissipation and the heat dissipator 120 may have a larger diameter than the heat dissipating fan 130, Lt; / RTI &gt;

Accordingly, although direct air injection of the heat dissipating fan 130 can be performed only on a part of the surface area of the heat dissipating member 120, the air injected on all the surfaces of the heat dissipating member 120 The arrangement of the radiating fins can be specified so as to pass therethrough.

The heat radiating fan 130 may have a bolt insertion hole 131 as shown in FIG. 2 on the outside of the heat radiating fan 130 so as to be combined with the upper case 150 to be described later.

<Upper Case and Lower Case>

The upper case 150 may cover the outer side of the heat dissipating fan 130 and may be coupled to the lower case 160 to create an air passage for allowing the air introduced into the lighting apparatus 100 to be discharged along a predetermined path have.

A terminal 141 for power supply may be disposed outside the upper case 150. An air inlet (not shown) for air inflow may be disposed on the upper surface of the upper case 150.

A heat radiating fan 130 and a driving unit electrically connected to the light emitting module unit 110 to supply the power supplied from the terminal 141 to the heat radiating fan 130 and the light emitting module unit 110, (140) may be disposed.

The driving unit 140 may include various electronic devices for driving the LEDs mounted on the PCB. At this time, a terminal 141 is formed on the upper surface of the PCB, and is partially exposed through the rear cover to be partially exposed. The exposed portion can be coupled to the terminal coupling groove and electrically connected.

The terminal 141 of the exposed portion may be a pin-shaped (shown as two terminals in the figure) mounted on the rear end of the upper case 150, but the present invention is not limited thereto and may be an external power source And a rectifier or a condenser may be installed in the interior of the lamp) as an illumination device of the present invention.

The upper case 150, the heat radiating fan 130 and the lower case 160 include a lower case 160, a heat radiating fan 130, a radiator 120, a light emitting module part 110 Are assembled without fastening, the upper case 150 is covered, and the positions of the components can be fixed and coupled using two bolts.

When the components are coupled, the lower case 160 can catch the outer portion of the light emitting module 110 and fix it together with other components. In addition, the lower case 160 may be provided with a space in which the light emitting module unit 110 can be housed, and the light emitting module unit 110 may be disposed in the receiving space of the lower case 160.

The lower case 160 may have an air inlet and an air outlet in the direction of the illumination area illuminated by the illumination device 100. [ The air inlet and the air outlet are configured and arranged independently of each other. The air inlet is used for introducing outside air into the lighting apparatus 100, and the air outlet is used for discharging air that has undergone heat exchange in the lighting apparatus 100 Can be used.

The air outside the lighting apparatus 100 may flow between the upper case 150 and the upper portion of the heat dissipating fan 130 through the air inlet of the lower case 160, And is sucked into the heat radiating fan 130 by the operation of the heat radiating fan 130 and is injected into the space between the lower part of the heat radiating fan 130 and the heat radiating body 120. The injected air passes through the surface of the heat discharging body 120 and is heat exchanged to cool the heat discharging body 120 and then be discharged through the air outlet of the lower case 160.

The upper case 150 or the lower case 160 may have a partition wall for separating the air inflow path through the air inflow port and the air outflow path through the air inflow port.

When the lighting apparatus 100 according to one embodiment is used embedded in a wall or a ceiling, since the air inlet and the air outlet are present in the external exposed portion rather than the embedded portion of the lighting apparatus 100, And can be discharged.

A lens 170 may be disposed on the lower case 160 and the lens 170 may be formed on the upper portion of each LED to collect light or scatter / focus the light emitted from the LED at a predetermined angle. The lens 170 distributes / converges the light so as to obtain light of a desired shape and protects the LED from impact.

3 shows a bottom plan view of a lighting device 300 according to another embodiment. A bottom plan view of the illumination device 300 of FIG. 3 may also be a bottom plan view of the illumination device 100 according to an embodiment of the invention of FIG.

The lighting apparatus 300 according to another embodiment includes a light emitting module 310, a heat emitting body 320 disposed on the light emitting module 310, a heat radiating fan 330 disposed on the heat emitting body 320, And a housing 350 for housing the light emitting module unit 310, the heat dissipating unit 320, and the heat dissipating fan 330.

The light emitting module unit 310, the heat emitting body 320 and the heat dissipating fan 330 may be the same as those of the embodiment of the present invention. However, in another embodiment of the present invention, And a housing 350 for housing the heat-dissipating fan 330. The housing 350 may be divided into an upper case 150 and a lower case 160 as an embodiment of the present invention, or may be integrally formed.

A driving unit 340 is disposed inside the housing 350 to supply external power to the heat dissipating fan 330 and the light emitting module unit 310.

An air inlet 361 and an air outlet 362 may be disposed at a lower portion of the housing 350, that is, a portion facing the direction in which light is emitted from the light emitting module. An air passage may be disposed in the housing 350 so that air introduced from the air inlet 361 passes through the heat dissipating fan 330 and flows out through the air outlet 362 through the heat discharging body 320 have. Air passages connected to the air inlet 361 and the air outlet 362 can be separated from each other by the partition 351 in the housing 350 and the heat dissipation fan 330.

The upper surface air inlet 371 may be disposed on the upper surface of the housing 350, that is, the upper surface of the housing 350 at the upper portion of the heat- The upper surface air inlet 371 may be disposed at the upper surface of the housing 350 corresponding to the position of the air inlet 361 disposed on the lower surface of the housing 350.

3, the illuminating device 300 is connected to the upper surface air inlet 371 disposed on the upper surface of the housing 350 through the air inlet 361 disposed on the lower surface of the housing 350 in the lower plan view, Can be seen.

Fig. 4 shows a cross-sectional view taken along line A-A in Fig.

4, the air inflow path of the illumination device 300 according to another embodiment can be seen. The air outside the lighting apparatus 300 is moved to the space between the housing 350 and the upper portion of the heat radiating fan 330 through the air inlet 361 and the upper surface air inlet 371 according to the operation of the heat radiating fan 330 .

1, external air may be moved to a space between the upper case 150 and the upper portion of the heat-dissipating fan 130 when the heat-dissipating fan 130 is operated.

The heat discharging body 320 may be configured to be separated from the air inflow path when the sectional view in the direction of the air inlet 361 is viewed. According to this configuration, the air introduced from the air inlet 361 and the upper surface air inlet 371 does not contact the heat discharger 320, but keeps the room temperature and flows into the lighting apparatus.

When the incoming air first comes into contact with the heat discharging body, heated air may flow between the upper part of the heat radiating fan and the housing, so that the driving unit 340 may not be cooled effectively.

The introduced air is moved to a space between the housing 350 and the upper part of the heat radiating fan 330 while maintaining the room temperature and can be cooled by the heat exchange with the driving part 340 of the lighting device 300 have.

Fig. 5 shows a cross-sectional view taken along the line B-B in Fig.

5, the air discharge path of the illumination device 300 according to another embodiment can be seen. 4, the air introduced into the upper portion of the heat-dissipating fan 330 through the air inlet 361 and the upper surface air inlet 371 flows into the lower portion of the heat-dissipating fan 330 and the heat- (Not shown). The injected air passes through the surface of the heat discharging body 320 and exchanges heat with the heat discharging body 320 to cool the heat emitting body 320 that has been transferred from the light emitting module unit 310.

The inside of the housing 350 of the air outlet 362 is blocked by the partition wall 351 as shown in Figure 5 so that the air heated by absorbing the heat from the heat discharging body 320 is heated by the operation of the heat radiating fan 330, And is discharged outside the lighting apparatus 300 without entering the inside of the lighting apparatus 300 again.

Fig. 6 shows a cross-sectional view taken along the line C-C in Fig.

Fig. 7 shows a plan view of the line D-D in Fig.

6 and 7 are a cross-sectional view and a plan view showing a part of the partition wall 351 of the illumination device 300 according to another embodiment. The partition wall 351 separates the air inlet 361 and the air outlet 362 from the air passage connected thereto ) Can be seen.

Figure 8 shows a bottom plan view of a lighting device 400 according to yet another embodiment.

The illumination device 400 according to another embodiment has the same components as those of the illumination device 300 according to another embodiment except that the arrangement of the air inlet and the air outlet is different so that the air inlet and the air outlet .

The lens 470, the air inlet 461, and the air outlet 462 may be disposed at a lower portion of the housing 450, that is, a portion facing the light emitting direction of the light emitting module. In the lighting apparatus 400 according to another embodiment, four air inlets 461 on the lower surface of the housing 450 are arranged, and two air outlets 462 are arranged.

The upper surface air inlet 480 may be disposed on the upper surface of the housing 450, that is, the surface of the housing 450 at the upper portion of the heat radiating fan. The upper surface air inlet 480 may be disposed at the upper surface of the housing 450 corresponding to the position of the air inlet 461 disposed on the lower surface of the housing 450.

8, a bottom plan view of the illumination device 400 shows an upper air inlet 480 disposed on the upper surface of the housing 450 through an air inlet 461 disposed on the lower surface of the housing 450, Can be seen.

Figure 9 shows a side view of a lighting device 400 according to yet another embodiment.

As shown in FIG. 9, the top surface air inlet 480 may be disposed on the upper surface of the housing 450. The upper air inflow port 480 is disposed in addition to the air inflow port 461 disposed on the lower surface of the housing 450 to reduce the inflow speed of the air to minimize dust inflow and increase the amount of air flowing into the room temperature The cooling effect of the internal temperature is increased.

Figure 10 shows various embodiments of the air inlet and air outlet arrangement of the illuminator.

The air inlet 261 and the air outlet 262 may be arranged in various forms at various positions on the lower surface of the housing or the lower case as shown in FIG.

As shown in FIGS. 10A and 10B, the air inlet 261 and the air outlet 262 may be arranged in an arc shape at a rim portion of the lower case. In FIG. 10 (a), the air inlet 261 and the air outlet 262 arranged in the rim portion are alternately arranged. The rim portion refers to an edge portion away from the center of the lower case. How far the air inlet 261 and the air outlet 262 are disposed from the center of the lower case can be arbitrarily determined according to the embodiment of the present invention. 10A and 10B, the air inlet 261 and the air outlet 262 may be arranged in an arc shape concentric with the bottom case of the circular shape.

10 (c), the air inlet 261 of the lower case may be disposed inside the air outlet 262, and the air inlet 261 may be disposed at the center of the lower case 261 as shown in FIG. 10 (d) And the air outlet 262 may be configured to be disposed at a rim portion of the lower case. The shapes of the air inlet 261 and the air outlet 262 may take various forms such as a circular shape, a polygonal shape, and the like.

When the air inlet 261 is disposed inside the air outlet 262 as shown in FIGS. 10 (c) and 10 (d), the probability that the heated air discharged through the air outlet 262 is re-introduced through the air inlet is lowered .

Table 1 shows the simulation results of the LED temperature and the case temperature in the MR16 illuminator with the ambient temperature of 25 ° C and the applied electric power of 10W. (A) to (d) in which only the heat radiator is used and the heat radiator is used and the air inlet and the air outlet are compared.

Figure 112011067444540-pat00001

 Compared with the case where only the heat radiator is used, the case temperature can be increased from 0.1 ° C to 28 ° C when the heat radiating fan is used together, but the LED temperature is lowered by 16 ° C to 32 ° C.

Table 2 below shows the internal temperature of the housing or the upper case when the upper air inlet is arranged on the upper surface and the internal temperature when the upper air inlet is not arranged on the upper surface of the housing or the upper case at 25 ° C.

[Table 2]

Figure 112011067444540-pat00002

As shown in the results of Table 2, when the upper air inlet is arranged, the internal temperature of the lighting apparatus is lowered.

Considering that the quality characteristics and life span of the LED are affected by the temperature of the LED, the illumination device according to the embodiments of the present invention exhibits remarkably improved performance in terms of quality characteristics and lifetime compared to the conventional case using only a heat radiator.

The present invention has an air inlet and an air outlet which are provided independently of each other and include a heat radiator and a heat radiating fan as described in the above embodiment and further have an upper air inlet on the upper surface of the housing, It is possible to provide a lighting apparatus with increased efficiency.

Further, since the additional upper air inlet is disposed on the upper surface of the housing, the flow rate of the introduced air is reduced to minimize the inflow of dust, and the lower temperature air flows into the upper surface of the housing, have.

The embodiment of the present invention can be used in an illumination lamp for collecting light by collecting a plurality of LEDs. In particular, the LED is embedded in a ceiling or a wall to be mounted on a structure facing the illumination area, Type illumination device.

[Modified Example Having Lens Portion That Can Be Easily Coupled]

11 shows a perspective view of a lighting device according to another embodiment. 12 shows a bottom plan view of a lighting device according to yet another embodiment. Fig. 13 shows a lens unit of a lighting apparatus according to another embodiment. Fig. 14 shows a cross-sectional view taken along the line A-A in Fig. Fig. 15 shows a cross-sectional view taken along the line B-B in Fig.

The illuminating device according to another embodiment includes the light emitting module units 515 and 517, the intermediate body 510, the heat radiating fan 530, the driving unit 540, the upper case 550, the lens unit 570, 570) of the lower case (560).

The light emitting module section may include a substrate 517 and a light emitting element 515 disposed on the substrate 517.

The intermediate body 510 may include a heat radiator disposed on one side of the light emitting module sections 515 and 517. The intermediate body 510 is disposed to be in contact with the rear portion of the light emitting module units 515 and 517 so that the heat of the light emitting module units 515 and 517 can be efficiently transmitted to the intermediate body 510.

A heat dissipating fan 530 is disposed on the heat dissipating member so that an external air flow can be transmitted to the heat dissipating member. The heat of the heat discharging body can be discharged to the outside by this air flow. The heat dissipation fan 530 may be disposed in a direction away from the heat dissipation member and toward the heat dissipation member.

The upper case 550 may be disposed so as to cover the heat dissipating fan 530. The upper case 550 may form a closed space so that the outside air sucked by the heat-dissipating fan 530 can flow out through the air outlet.

The intermediate body 510, the heat dissipating fan 530, and the upper case 550 may all be referred to as a body portion.

The lens unit 570 may be disposed to cover the other side of the light emitting module units 515 and 517 opposite to the side where the intermediate body 510 is disposed. The lens unit 570 protrudes in a direction in which light generated from the light emitting module units 515 and 517 is emitted and has a shape protruding higher than the lower case 560.

13, the lens unit 570 includes an optical unit 571 through which light generated from the light emitting module units 515 and 517 is transmitted and a fixing unit 575 extending from the optical unit 571 in the outward direction, ). 13A is a sectional view taken along the line AA in FIG. 13A. FIG. 13C is a sectional view taken along the line BB in FIG. 13A. FIG. 13A is a plan view of the lens portion 570, Fig.

As shown in Fig. 13, the lens portion 570 may have a fixing portion 575 extending outward only in some directions. This configuration is intended to secure a space for coupling between the lower case 560 and the intermediate body 510, which will be described below with reference to FIGS. 14 and 15. FIG.

The lower case 560 is disposed on a part of the lens part 570 and can be screwed to the intermediate body 510. The lower case 560 may cover a part of the lens part 570 and may be coupled to the intermediate body 510 to fix the lens part 570.

An air inlet 561 and an air outlet 562 may be disposed in the lower case 560. A circular dotted line passing through the line A-A shown on the surface of the lower case 560 shown in FIG. 12 is a screw groove for screwing the lower case 560 to the intermediate body 510 or the like.

Referring to FIG. 14, which is a sectional view taken along the line A-A passing through the thread groove portion, the lens portion 570 does not have an outwardly extending portion in which the thread groove of the lower case 560 exists. This configuration is for preventing the threaded passage of the lower case 560 and the intermediate body 510 from being blocked. 14, the lens portion 570 may have a portion extending outwardly to the threaded groove of the lower case 560. [0064] As shown in FIG.

Referring to FIG. 15, which is a cross-sectional view taken along the line B-B not passing through the thread groove portion, it can be seen that the lens portion 570 has a portion extending outwardly to a portion of the lower case 560.

The fixing portion 575 extending outwardly from the lens portion 570 is disposed to be sandwiched between the lower case 560 and the intermediate body 570 so that the lens portion 570 Can be maintained in a fixed position.

With the configuration as described above, the illumination device can be fixed at a specific position in the illuminating device without attaching a screw to the lens itself, so that the assembling of the illuminating device is simplified and the formation of the lens portion can be facilitated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100, 300, 400: illumination device 110, 310:
120, 320: heat radiator 130, 330: heat radiator
140, 340: driving part 150: upper case
160: lower case 350, 450: housing
261, 361: air inlet 262, 362: air outlet
480: upper air inlet

Claims (8)

  1. A light emitting module section;
    A lens unit disposed on one side of the light emitting module unit;
    A heat dissipation member disposed on the other side of the light emitting module section;
    A heat radiating fan disposed apart from the heat radiating body;
    An upper case covering the heat discharging body and the heat radiating fan; And
    And a lower case coupled to the lens unit,
    The lower case is coupled to the upper case and has a first air inlet and an air outlet,
    Wherein the upper case or the lower case has a partition for separating an air inflow path through the first air inflow port and an air outflow path through the air outflow port,
    Wherein the air inflow path is formed between the first air inlet and the first space and the first space is a space between the upper case and the upper part of the heat radiation fan,
    Wherein the air outflow path is formed between the air outlet and the second space, the second space being a space between a lower portion of the heat radiation fan and the heat radiation body,
    The lower case has a screw groove to be screwed with the upper case,
    The lens unit includes an optical unit that transmits light of the light emitting module sub-rotor, a first fixing unit that extends in one direction from the optical unit, and a second fixed unit that extends from the optical unit in a direction opposite to the one direction 2 &lt; / RTI &gt;
    Wherein the first fixing portion and the second fixing portion are disposed between the lower case and the upper case,
    And the first fixing portion and the second fixing portion do not extend in the screw groove side direction.
  2. The method according to claim 1,
    And a second air inlet is disposed on an upper surface of the upper case.
  3. The method according to claim 1,
    And the heat discharger is configured to be separated from the air inflow path.
  4. delete
  5. A light emitting module section;
    An intermediate body disposed on one side of the light emitting module section;
    A heat radiating fan disposed on the intermediate body;
    An upper case covering the heat dissipating fan;
    A lens unit disposed on the other side of the light emitting module unit;
    And a lower case coupled to the intermediate body,
    Wherein the intermediate body has a screw groove for screwing with the lower case,
    The lens unit includes an optical unit for transmitting light of the light emitting module sub-rotor, a first fixing unit extending in one direction from the optical unit, and a second fixing unit extending in the other direction opposite to the one direction, 2 &lt; / RTI &gt;
    Wherein the first fixing portion and the second fixing portion are disposed between the lower case and the intermediate body,
    And the first fixing portion and the second fixing portion do not extend in the screw groove side direction.
  6. 6. The method according to claim 1 or 5,
    Wherein the optical section of the lens section has a protrusion that protrudes in a direction in which light generated from the light emitting module section is emitted.
  7. 6. The method of claim 5,
    Wherein the lower case has an air inlet, the middle body has an air outlet,
    Wherein the intermediate body separates an air inflow path through the air inflow port and an air outflow path through the air inflow port.
  8. 8. The method of claim 7,
    Wherein the air inlet path is formed between the air inlet and the first space,
    Wherein the air outflow path is formed between the air outflow port and the second space,
    Wherein the first space is a space between the upper case and the heat-dissipating fan,
    And the second space is a space between the heat radiating fan and the intermediate body.
KR1020110086859A 2011-08-30 2011-08-30 Lighting device KR101883323B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110086859A KR101883323B1 (en) 2011-08-30 2011-08-30 Lighting device

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
KR1020110086859A KR101883323B1 (en) 2011-08-30 2011-08-30 Lighting device
US14/240,317 US9739469B2 (en) 2011-08-30 2012-08-30 Lighting device
EP12829045.9A EP2751473B1 (en) 2011-08-30 2012-08-30 Lighting device
PCT/KR2012/006920 WO2013032239A1 (en) 2011-08-30 2012-08-30 Lighting device
CN201610883790.1A CN107023762A (en) 2011-08-30 2012-08-30 Lighting device
CN201280042436.6A CN103782081B (en) 2011-08-30 2012-08-30 Lighting device
JP2014528280A JP6116567B2 (en) 2011-08-30 2012-08-30 Lighting device

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KR101883323B1 true KR101883323B1 (en) 2018-07-30

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060193139A1 (en) 2005-02-25 2006-08-31 Edison Opto Corporation Heat dissipating apparatus for lighting utility
US20100246166A1 (en) * 2009-03-24 2010-09-30 Nien-Hui Hsu Illumination apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101007134B1 (en) * 2009-06-05 2011-01-10 엘지이노텍 주식회사 Lighting Device
KR20110004715A (en) 2009-07-08 2011-01-14 이상구 The led light with a cooling fan
KR101072060B1 (en) * 2009-11-09 2011-10-10 엘지이노텍 주식회사 Lighting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060193139A1 (en) 2005-02-25 2006-08-31 Edison Opto Corporation Heat dissipating apparatus for lighting utility
US20100246166A1 (en) * 2009-03-24 2010-09-30 Nien-Hui Hsu Illumination apparatus

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