KR20130115714A - Lighting device - Google Patents

Abstract

PURPOSE: A lighting device is provided to enhance the heat dissipation efficiency and the lighting efficiency. CONSTITUTION: A heat dissipation device (100) includes a base unit which has an upper side and a lower side; and a body which surrounds the base unit and is connected to the based unit. An optical source unit (200) includes a substrate which is placed on the upper side of the base unit; and a light emitting element which is placed on the substrate. A blower (400) is placed on the lower side of the base unit. The heat dissipation device includes a first hole and a second hole, which are separate from each other, and the first and the second holes penetrate the body of the heat dissipation device. The blower sucks in air through the first hole and discharges the air through the second hole.

Description

LIGHTING DEVICE

An embodiment relates to a lighting device.

Light emitting diodes (LEDs) are a type of semiconductor device that converts electrical energy into light. Light emitting diodes have the advantages of low power consumption, semi-permanent life, fast response speed, safety and environmental friendliness compared to conventional light sources such as fluorescent and incandescent lamps. Therefore, much research has been conducted to replace conventional light sources with light emitting diodes. Light emitting diodes are increasingly used as light sources for various lamps used in indoor / outdoor, liquid crystal display devices, electric sign boards, streetlights, and the like .

The embodiment provides a lighting device that can improve heat dissipation efficiency.

In addition, there is provided a lighting device that can improve the light efficiency.

In addition, the embodiment provides a lighting device that is easy to assemble.

According to an embodiment, a lighting apparatus includes: a radiator including a base portion having an upper surface and a lower surface, and a body surrounding an outer portion of the base portion and connected to the base portion; A light source unit including a substrate disposed on an upper surface of the base portion of the radiator, and a light emitting device disposed on the substrate; And a blower disposed on a lower surface of the base of the heat sink, wherein the heat sink has a first hole and a second hole separated from each other, and the first and second holes penetrate the body of the heat sink. The blower introduces air through the first hole and discharges the introduced air into the second hole.

The lighting apparatus according to the embodiment includes a heat dissipation body including a top end having a first accommodating groove and a lower end having a second accommodating groove, and having first and second holes penetrating the upper end and the bottom end; And a light source unit disposed in the first accommodating groove of the heat sink and having a light emitting element. A fan disposed in the second receiving groove of the heat sink; And a housing coupled to a lower end of the heat sink and having a space formed on the second receiving groove, wherein the air around the upper end of the heat sink is transferred to the first hole by driving the fan. Inflow and outflow into the space of the housing, the air in the housing space is sucked by the fan and discharged to the second hole.

Using the lighting apparatus according to the embodiment, there is an advantage that can improve the heat radiation efficiency.

In addition, there is an advantage that can improve the light efficiency.

In addition, there is an advantage that the assembly is easy.

1 is a perspective view from above of a lighting device according to an embodiment;
2 is a perspective view from below of the lighting device shown in FIG. 1;
3 is an exploded perspective view of the illumination device shown in Fig.
4 is a perspective view of the heat sink shown in FIG.
5 is a plan view of the heat sink shown in FIG. 4;
6 is a perspective view from below of the heat sink shown in FIG. 3;
FIG. 7 is a plan view of the heat sink shown in FIG. 6; FIG.
8 is a cross-sectional view taken along the line AA ′ of FIG. 5.
9 is a plan view of a lighting apparatus according to another embodiment.
10 is a plan view of a lighting apparatus according to another embodiment.
FIG. 11 is a perspective view of the optical plate shown in FIG. 3 viewed from below. FIG.
12 is a plan view of the blower shown in FIG.
FIG. 13 is a rear view of the blower shown in FIG. 3. FIG.
14 is a perspective view of the housing shown in FIG.
FIG. 15 is a sectional view of the housing shown in FIG. 14; FIG.

The thickness and size of each layer in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. In addition, the size of each component does not necessarily 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 directly 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.

Hereinafter, a lighting apparatus according to an embodiment will be described with reference to the accompanying drawings.

1 is a perspective view from above of a lighting device according to an embodiment, FIG. 2 is a perspective view from below of a lighting device shown in FIG. 1, and FIG. 3 is an exploded perspective view of the lighting device shown in FIG. 1.

The lighting apparatus according to the embodiment includes a heat sink 100, a light source unit 200 disposed on the heat sink 100, an optical unit 300 disposed on the light source unit 200 and coupled to the heat sink 100. The blower 400 disposed on the heat sink 100, the driving unit 500 for providing power to the light source unit 200, and the driving unit 500 are disposed and coupled to the heat sink 100. It may include. Hereinafter, each component will be described in detail with reference to the accompanying drawings.

<Heat radiator 100>

FIG. 4 is a perspective view of the heat sink shown in FIG. 3, FIG. 5 is a plan view of the heat sink shown in FIG. 4, FIG. 6 is a perspective view of the heat sink shown in FIG. 3, and FIG. 7 is FIG. 6. 8 is a plan view of the heat sink shown in FIG. 8, and FIG. 8 is a cross-sectional view taken along line AA ′ of FIG. 5.

3 to 8, the radiator 100 may form the exterior of the lighting apparatus according to the embodiment together with the optical unit 300 and the housing 600. The heat sink 100 may include a base portion 110 and the body 130.

The base unit 110 may be surrounded by the body 130 and may be physically connected to the body 130. Here, the base 110 and the body 130 may be integral.

The base 110 has an upper surface 110A and a lower surface 110B, and may have a disk shape having a predetermined thickness. The outer portion of the base 110 may be surrounded by the body 130. The disk-shaped base portion 110 may be disposed in the cylindrical body 130.

The body 130 may be divided into an upper end and a lower end based on the base 110. The upper end of the body 130 has a first receiving groove 120A, and the lower end of the body 130 has a second receiving groove 120B. The light source unit 200 is disposed in the first accommodating groove 120A, and the blower 400 is disposed in the second accommodating groove 120B. The upper end of the body 130 is coupled to the optical unit 300, the lower end of the body 130 is coupled to the housing 600.

The substrate 210 is disposed on the upper surface 110A of the base 110. The upper surface 110A receives heat generated from the substrate 210 through surface contact with one surface of the substrate 210.

The blower 400 is disposed on the bottom surface 110B of the base 110. The lower surface 110B may guide the air discharged from the blower 400 to the air outlets 170A and 170B. Here, there may be a predetermined interval between the bottom surface 110B of the base 110 and the blower 400.

The lower surface 110B of the base unit 110 may include a first surface 110B-1 and a second surface 110B-2. The first surface 110B-1 is disposed at the center portion of the lower surface 110B, and the second surface 110B-2 is connected to the first surface 110B-1 and surrounds the first surface 110B-1. Is placed.

The first surface 110B-1 and the second surface 110B-2 may be disposed on the same plane, but as shown in FIG. 8, the first surface 110B-1 and the second surface 110B- 2) may not be arranged on the same plane.

An angle a between the first surface 110B-1 and the second surface 110B-2 may be an obtuse angle (90 degrees or more and less than 180 degrees). If the angle a between the first surface 110B-1 and the second surface 110B-2 is an obtuse angle, the distance between the second surface 110B-2 and the blower 400 is equal to the first surface 110B-. Farther than the distance between 1) and the blower 400. If the distance between the second surface (110B-2) and the blower 400 is far, the space between the second surface (110B-2) and the blower 400 is widened, the first surface (110B-1) and the second When the surface 110B-2 is coplanar, the rotational speed of the blower 400 may be further improved, and a larger amount of air may be processed.

The base unit 110 may include a plurality of pins 110B-3. In detail, the plurality of pins 110B-3 may be disposed on the second surface 110B-2 of the lower surface 110B. Here, the plurality of fins 110B-3 may protrude in the direction of the blower 400 from the second surface 110B-2.

The plurality of fins 110B-3 form a plurality of air passages for moving the air discharged from the blower 400. The plurality of air passages are connected to air outlets 170A and 170B. To this end, the plurality of fins 110B-3 have a predetermined length in the direction of the air outlets 170A and 170B on the first surface 110B-1. The plurality of fins 110B-3 guide the air discharged from the blower 400 to the air outlets 170A and 170B.

The body 130 of the heat sink 100 has two or more holes. Specifically, body 130 may have one or more air inlets 150A, 150B, 150C, 150D and air outlets 170A, 170B.

The air inlet is not connected to the air outlet. The air inlet and the air outlet are separated from each other, and the air inlet sucks the outside air into the lighting apparatus according to the embodiment, and the air outlet exhausts the internal air of the lighting apparatus according to the embodiment. To this end, the body 130 of the heat sink 100 may have a partition wall separating the air inlet and the air outlet. In order to improve heat dissipation performance, the number of air outlets may be larger than the number of air inlets.

Air inlets 150A, 150B, 150C, 150D pass through the top and bottom of body 130. The air inlets 150A, 150B, 150C, and 150D are not connected to the second receiving groove 120B of the heat sink 100. Through the air inlets 150A, 150B, 150C, and 150D, outside air existing around the upper end of the body 130 is introduced into the inner space between the heat sink 100 and the housing 600.

5 and 7, the opening area of the air inlet 150A at the upper end of the body 130 is larger than the opening area of the air inlet 150A at the lower end of the body 130. If the air inlet 150A at the upper end is larger than the opening area of the air inlet 150A at the lower end, the speed of the air flowing into the air inlet 150A is improved.

The air outlets 170A and 170B penetrate the upper and lower ends of the body 130. The air outlets 170A and 170B are connected to the second receiving groove 120B of the heat sink 100. Through the air outlets 170A and 170B, air may escape from the second receiving groove 120B of the heat sink 100 to the outside.

The body 130 of the heat sink 100 may include an upper surface, a lower surface, and an inner surface. Here, the inner surface is a surface surrounding the outer portion of the base portion 110. One openings of the air inlets 150A, 150B, 150C, and 150D and one openings of the air outlets 170A and 170B are disposed together on an upper surface of the body 130, and air inlets are disposed on a lower surface of the body 130. The other openings 150A, 150B, 150C, 150D are disposed. The other side openings of the air outlets 170A and 170B are disposed on the inner side surface of the body 130.

On the other hand, the upper surface of the body 130 may support the optical unit 300. In detail, a portion of the optical unit 300 is disposed on the upper surface of the body 130 to support the optical unit 300 on the light source unit 200.

The air outlets 170A and 170B may include a first air outlet 170A and a second air outlet 170B. A plurality of fins 190 may be disposed in the first and second air outlets 170A and 170B. The plurality of pins 190 may have one side connected to the body 130. When the plurality of fins 190 are disposed at the first and second air outlets 170A and 170B, the surface area of the heat sink 100 is widened, which is advantageous for heat dissipation, between the heat sink 100 and the housing 600. The advantage is that the speed of air convection exiting the space outwards is faster.

An interval between the plurality of pins 190 may be 2.0 (T or mm) or more and 3.1 (T or mm) or less. Here, the spacing between the plurality of pins 190 may be optimized to 2.6 (T or mm). If the spacing between the plurality of fins 190 is greater than 3.1T, there is a problem that the speed of air convection falls, and if less than 2.0T, the first and second air outlets 170A and 170B become smaller, which is not effective for heat dissipation. There may be.

The number of the plurality of pins 190 may be determined according to the distance between the plurality of pins 190. The number of the plurality of pins 190 may be five or more and eight or less. The number of the plurality of pins 190 may be optimized to seven. If the number of the plurality of fins 190 is less than 5 there is a problem that the speed of the air convection is falling, if larger than 8, there is a problem that the first and second air outlets 170A, 170B is small, which is not effective for heat dissipation. have.

Each of the plurality of pins 190 may have a thickness of 1.2 (T or mm) or more and 2.0 (T or mm) or less. The thickness of the fin 190 may be optimized to 1.6 (T or mm). If the thickness of the fin 190 is smaller than 1.2 (T or mm), it is difficult to manufacture the fin 190 and is not effective for heat dissipation. If the thickness of the fin 190 is greater than 2.0 (T or mm), the first and second There may be a problem that the air outlets 170A and 170B become smaller and are not effective for heat dissipation.

9 is a plan view of a lighting apparatus according to another embodiment.

Referring to FIG. 9, the lighting apparatus according to another embodiment may have air inlets 150A, 150B, 150C, and 150D and air outlets 170A and 170B, similarly to the lighting apparatus according to the embodiment illustrated in FIG. 5. Can be. However, the lighting apparatus according to another embodiment does not have the plurality of fins 190. That is, the plurality of fins may not be disposed in the air outlets 170A and 170B.

10 is a plan view of a lighting apparatus according to another embodiment.

Referring to FIG. 10, the lighting apparatus according to another embodiment may include the air inlets 150A, 150B, 150C, and 150D and the air outlets 170A and 170B, similarly to the lighting apparatus according to the embodiment illustrated in FIG. 5. Can have In addition, in the lighting apparatus according to another embodiment, a plurality of fins 190B may be disposed at the air inlets 150A, 150B, 150C, and 150D as well as the air outlets 170A and 170B.

Referring to FIGS. 1 to 8 again, the positions of the plurality of fins 190 disposed at the air outlets 170A and 170B may be defined by the plurality of fins 110B-3 of the lower surface 110B of the base 110. May correspond to a location. When the positions of the plurality of fins 190 correspond to the positions of the plurality of fins 110B-3 of the base portion 110, the air passages and the plurality of air passages formed by the fins 110B-3 of the base portion 110 are provided. Since the air passage formed between the fins 190 of the connected, it is possible to reduce the noise caused by the air flow when driving the lighting apparatus according to the embodiment.

On the top surface of the body 130 of the heat sink 100, the total opening area of the air inlets 150A, 150B, 150C, 150D is smaller than the total opening area of the air outlets 170A, 170B. That is, the total opening area of the air outlets 170A and 170B is larger than the total opening area of the air inlets 150A, 150B, 150C, and 150D. If the total opening area of the air inlets 170A and 170B is larger than the total opening area of the air inlets 150A, 150B, 150C, and 150D, the outflowing air is larger than the inflowing air, so that the heat radiation efficiency is improved. There is this.

More specifically, the total opening area of the air inlets 170A and 170B versus the total opening area of the air inlets 150A, 150B, 150C, and 150D may be between 8: 2 and 6: 4. If the total opening area of the air inlets 170A, 170B versus the total opening area of the air inlets 150A, 150B, 150C, 150D is greater than 8: 2, for example, 9: 1, the air inflow is too high Since it is small, there exists a problem that heat radiation efficiency falls. On the other hand, if the total opening area of the air inlets 170A and 170B versus the total opening area of the air inlets 150A, 150B, 150C, and 150D is smaller than 6: 4, the heat dissipation efficiency is lowered because the air outlet amount is reduced. There is.

Here, the total opening area of the air inlets 170A and 170B is larger than the total opening area of the air inlets 150A, 150B, 150C, and 150D, and the total opening area ratio is the lighting device shown in FIGS. 9 and 10. Of course, it can also be applied to.

The body 130 of the heat sink 100 may have a fastening hole 135. The fastening hole 135 may penetrate the upper end and the lower end of the body 130. Alternatively, the fastening hole 135 may penetrate the upper and lower surfaces of the body 130. The fastening part 415 of the blower 400 is inserted into the fastening hole 135, and the first screw S1 penetrating the fastening part 670 of the housing 600 is inserted. In addition, the fastening part 135 of the optical part 300 is inserted into the fastening hole 135. Therefore, the first screw S1 is coupled to the fastening part 415 of the blower 400 inserted into the fastening hole 135 and the fastening part 350 of the optical part 300, thereby providing the optical part 300 and heat dissipation. The sieve 100, the blower 400, and the housing 600 may be simultaneously coupled by the first screw S1.

The radiator 100 may be formed of a metal material or a resin material having excellent heat dissipation efficiency, but is not limited thereto. For example, the material of the heat sink 100 may include at least one of aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), tin (Sn), and magnesium (Mg). .

Although not shown in the drawings, a plurality of heat dissipation fins may be disposed on an outer surface of the heat dissipator 100. The plurality of heat sink fins may improve the heat radiation efficiency of the heat sink 100 by widening the area of the outer surface of the heat sink 100.

<Light source part 200>

Referring to FIG. 3, the light source unit 200 is disposed on the heat sink 100. In detail, the light source unit 200 may be disposed on the base unit 110 of the heat sink 100. In addition, the light source unit 200 may be disposed in the first accommodating groove 120A of the heat sink 100. In addition, the light source unit 200 is disposed between the radiator 100 and the optical unit 300.

The light source unit 200 includes a light emitting device 230 for emitting predetermined light. In detail, the light source unit 200 may include a substrate 210, a light emitting device 230, a connector 250, and a heat radiating pad 270.

The light emitting device 230 and the connector 250 are disposed on one surface of the substrate 210. The substrate 210 has a circular plate shape, but is not limited thereto and may have various shapes. For example, it may be a polygonal plate shape. The substrate 210 may have a circuit pattern printed on an insulator, and for example, a general printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, and the like. It may include. In addition, it is possible to use a Chips On Board (COB) type that can directly bond the LED chip unpacked on the printed circuit board.

The substrate 210 may be formed of a material that reflects light efficiently, or may be formed of a color that reflects light efficiently, for example, white, silver, or the like.

The light emitting devices 230 may be disposed in plurality on one surface of the substrate 210. Here, the light emitting device 230 may be a device that emits light using characteristics of the semiconductor material. For example, it may be an LED. Quantity and arrangement of the light emitting device 230 can be arbitrarily adjusted to the required illuminance.

The LED 230 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. Here, the light emitting diode may be a horizontal type or a vertical type.

The light emitting device 230 may have a phosphor. The phosphor may include at least one of garnet-based (YAG, TAG), silicate-based, nitride-based and oxynitride-based, when the LED is a blue light emitting diode. Can be.

The connector 250 may be disposed on one surface of the substrate 210. However, the present invention is not limited thereto, and the connector 250 may be disposed on the other surface of the substrate 210. The connector 250 is electrically connected to the driving unit 500 through a wire to receive power from the driving unit 500.

The heat dissipation pad 270 may be disposed between the substrate 210 and the base part 110 of the heat sink 100. The heat dissipation pad 270 may be a thermally conductive silicone pad or a thermally conductive tape having excellent thermal conductivity. The heat dissipation pad 270 may effectively transfer heat generated from the substrate 210 to the heat sink 100.

<Optical Edition 300>

FIG. 11 is a perspective view of the optical plate shown in FIG. 3 viewed from below. FIG.

1 to 3 and 11, the optical plate 300 is disposed on the light source unit 200 and coupled to the heat sink 100.

The optical plate 300 may include a base plate 310, a lens 330, a fastening part 350, and an insertion part 370.

The base plate 310 has a disc shape and is disposed on the light source unit 200. The outer portion of the base plate 310 may be disposed on an upper surface of the heat sink 100. Here, the base plate 310 may be disposed to cover a portion of the air inlets 150A, 150B, 150C, and 150D and the air outlets 170A and 170B of the heat sink 100 shown in FIG. 5.

A lens 330 coupled to the light emitting device 230 of the light source unit 200 may be disposed on the bottom surface of the base plate 310. Two or more lenses 330 may be disposed at the center of the base plate 310. One lens 330 may be combined with one light emitting device 230. The number of lenses 330 may correspond to the number of light emitting elements 230. The lens 330 may diffuse or condense the light emitted from the light emitting element 230.

The lens 330 may emit excitation light excited by light from the light emitting element 230. In order to emit excitation light, the lens 330 may have a phosphor. The phosphor may include at least one of Garnet-based (YAG, TAG), Silicate, Nitride, and Oxynitride.

The fastening part 350 has a shape protruding to the outside from the outside of the lower surface of the base plate 310. The fastening part 350 is inserted into the fastening hole 135 of the heat sink 100 shown in FIG. 4. In addition, the fastening part 350 has an insertion hole 355 into which the first screw S1 shown in FIG. 3 is inserted.

The insertion part 370 has a shape protruding outward from the lower surface of the base plate 310 and is disposed around the lens 330. The insertion part 370 may be inserted into the first receiving groove 120A illustrated in FIG. 4 and disposed on the upper surface 110A of the base part 110 of the heat sink 100. The insertion part 370 may serve to support the base plate 310 such that the base plate 310 is spaced apart from the light source unit 200 by a predetermined interval.

The optical plate 300 may be made of glass. However, since glass has a weak problem in weight or external impact, the optical plate 300 may be plastic, polypropylene (PP), polyethylene (PE), or the like. Preferably, it may be a light diffusion polycarbonate (PC) having good light resistance, heat resistance, and impact strength characteristics.

<Blower 400>

12 is a plan view of the blower 400 shown in FIG. 3, and FIG. 13 is a rear view of the blower 400 shown in FIG. 3.

The blower 400 refers to a device for driving forced convection to generate forced convection. An example of the blower 400 may be a fan illustrated in FIGS. 10 to 11. Here, in the lighting apparatus according to the embodiment, the blower 400 is not limited to the fan, and means all the apparatuses capable of forcibly moving the surrounding air.

3, 12 and 13, the blower 400 is coupled to the heat sink (100). Specifically, the blower 400 is disposed in the second receiving groove 120B of the heat sink 100. In addition, the blower 400 is disposed on the bottom surface 110B of the base portion 110 of the heat sink 100.

The blower 400 may include a body 410, a rotating part 430 disposed in the body 410, and a cable 450 for receiving power from the driving part 500. The blower 400 causes forced convection by rotating the rotating unit 430 by the power input through the cable 450.

The number of revolutions per minute of the rotating part 430 of the blower 400 may be 4800 RPM or less. If the rotational speed is 4800 RPM or less, the noise generated by the lighting apparatus according to the embodiment may be 24 dB or less. Here, the condition that the noise should be 24 dB or less is the energy star's noise regulation. The noise rating of the Energy Star shall be measured in a room of 20 dB or less of noise including the ballast and shall be 24 dB or less of noise in all directions 12 inches away from the luminaire.

Under the condition that the number of revolutions per minute of the rotating unit 430 is 4800 RPM or less, the driving voltage of the blower 400 may satisfy the noise condition of 24 dB or less when the driving voltage is 3.3 V or more and 3.7 V or less. In particular, when the driving voltage of the blower 400 is 3.5V, a noise of approximately 22 dB level may be maintained. The driving of the lighting apparatus according to the embodiment by driving the blower 400 will be described in detail. When the blower 400 is driven, outside air is introduced through the air inlets 150A, 150B, 150C, and 150D of the heat sink 100, and the air introduced therein absorbs predetermined heat from the heat sink 100. It moves to the space between the heat sink 100 and the housing 600. Air moved to the space passes through the blower 400, the air passed through the blower 400 is a plurality of fins 190 disposed on the lower surface (110B) of the base portion 110 of the heat sink (100) The air moving along and moving along the plurality of fins 190 exits the outside of the lighting device through the air outlets 170A and 170B.

The blower 400 may further include a fastening part 415. The fastening portion 415 may extend outward from the outer surface of the body 410. The fastening part 415 is inserted into the fastening hole 135 of the heat sink 100. The fastening part 415 has a hole 415-1. The first screw S1 illustrated in FIG. 3 passes through the hole 415-1.

<Drive part 500>

The driving unit 500 receives power from the outside and converts the received power to match the light source unit 200. Then, the converted power is supplied to the light source unit 200. In addition, the driving unit 500 provides power to the blower 400.

The driver 500 is disposed inside the housing 600. In detail, the driving part 500 may be disposed in a space between the radiator 100 and the housing 600.

The driver 500 may include a circuit board 510 and a plurality of components 530 mounted on one surface of the circuit board 510.

The circuit board 510 has a circular plate shape, but is not limited thereto and may have various shapes. For example, it may be an oval or polygonal plate shape. The circuit board 510 may be a circuit pattern printed on the insulator.

The plurality of components 530 may include, for example, a DC converter for converting AC power provided from an external power source into DC power, a driving chip for controlling the driving of the light source unit 200, and an ESD protection for the light source unit 200. ElectroStatic discharge) may include a protection element and a connector electrically connected to the light source unit 200 and the blower 400.

The driving part 500 may further include a support part 550. The support part 550 is disposed on the other surface of the circuit board 510. The support 550 is disposed on the pin holder 650 of the housing 600 to support the circuit board 510.

<Housing 600>

FIG. 14 is a perspective view of the housing shown in FIG. 3, and FIG. 15 is a sectional view of the housing shown in FIG. 14.

3, 14, and 15, the housing 600 may be coupled to the heat sink 100 and may accommodate the driving unit 500 and other components therein.

The housing 600 may include a body 610, an electrode pin 630, a holder 650, and a fastening part 670.

The body 610 is coupled to the heat sink 100 and has a predetermined space 620 for accommodating the driving part 500. In addition to the driving unit 500, the electrode pin 630 and the holder 650 may be disposed in the space 620, and the space 620 may include air inlets 150A, 150B, 150C, 150D) provides a place to stay until the air flowing through the blower 400 is introduced.

The electrode pin 630 provides power to the driving unit 500 that is applied from the outside of the lighting apparatus according to the embodiment. Two electrode pins 630 may be installed through the body 610. The electrode pin 630 may be bent at least twice. If the electrode pin 630 has a bent shape two or more times, the electrode pin 630 may be prevented from being separated from the body 610.

The holder 650 fixes the electrode pin 630 to the body 610 of the housing 600. The holder 650 is coupled to a portion of the electrode pin 630 and is coupled to the body 610. The holder 650 may be coupled to the body 610 through a second screw S2. The second screw S2 penetrates through the holder 650 and engages with the groove 690 formed in the lower portion of the housing 600, whereby the holder 650 may be firmly coupled with the housing 600.

The fastening part 670 may extend from the inner surface of the body 610 to the outside. The fastening part 670 has a fastening hole 671 passing through itself and the body 610. The fastening part 670 is inserted into the fastening hole 135 of the heat sink 100.

<Screws (S1, S2)>

The first screw S1 passes through the fastening hole 671 of the fastening part 670 of the housing 600, passes through the fastening part 415 of the blower 400, and fastens the fastening hole of the heat sink 100 ( It penetrates 135 and couples to the fastening hole 355 of the fastening part 350 of the optical part 300. Since the housing 600, the blower 400, the heat sink 100, and the optical unit 300 may be coupled using two first screws S1, the lighting apparatus according to the embodiment may be easily assembled. There is this.

The second screw S2 penetrates through the holder 650 of the housing 600 and engages with the hole 690 of the housing 600. The electrode pin 630 may be fixedly installed to the housing 600 by the second screw S2.

In the lighting apparatus according to the embodiment illustrated in FIG. 1, when looking at the air movement path, the outside air is discharged from the heat sink 100 and the housing through the air inlets 150A, 150B, 150C, and 150D of the heat sink 100. It is introduced into the space between the 600, is sucked into the blower 400 by the drive of the blower 400 is injected in the direction of the base portion 110 side of the heat sink (100). The injected air moves along the air passage formed in the bottom surface 110B of the base portion 110 of the heat sink 100, and finally the air is moved to the outside through the air outlets 170A and 170B of the heat sink 100. Exit

Here, the outside air exchanges heat with the heat sink 100 while passing through the air inlets 150A, 150B, 150C, 150D and the air outlets 170A, 170B of the heat sink 100, and the heat sink 100 The heat is exchanged with the driving unit 500 in the space between the housing 600 and the housing 600, and the warmed air is discharged to the outside through the air outlets 170A and 170B. Therefore, the heat emitted from the heat sink 100 and the driver 500 has an advantage that can be quickly released to the outside by the convection of air.

When the lighting apparatus according to the embodiment is embedded in the wall or the ceiling, the air inlet and the air outlet are not embedded in the wall or the ceiling, and are exposed to the outside, so that the outside air can be effectively introduced and discharged.

Although the above description has been made with reference to the embodiments, these are only examples and are not intended to limit the present invention, and those of ordinary skill in the art to which the present invention pertains should not be exemplified above without departing from the essential characteristics of the present embodiments. It will be appreciated that many variations 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: radiator
200: light source
300: optics
400: blower
500:
600: housing
S1, S2: screw

Claims (19)

A heat dissipation body including a base part having an upper surface and a lower surface and a body surrounding the outer part of the base part and connected to the base part;
A light source unit including a substrate disposed on an upper surface of the base portion of the radiator, and a light emitting device disposed on the substrate; And
And a blower disposed on a bottom surface of the base portion of the radiator,
The heat sink has a first hole and a second hole separated from each other, the first and second holes penetrate the body of the heat sink,
The blower is a lighting device for introducing air through the first hole, and discharges the introduced air to the second hole. The method of claim 1,
The body of the radiator includes an upper surface, a lower surface and an inner surface surrounding the outer portion of the base portion,
One opening of the first hole of the heat sink is disposed on the upper surface of the body, the other opening is disposed on the lower surface of the body,
One opening of the second hole of the heat sink is disposed on the upper surface of the body, the other opening is disposed on the inner surface of the body. 3. The method of claim 2,
The area of the one side opening of the second hole is greater than the area of the one side opening of the first hole. 3. The method of claim 2,
The first and second holes are plural,
The total opening area of the one side openings of each of the plurality of second holes is greater than the total area of the one side openings of each of the plurality of first holes. 5. The method of claim 4,
The total opening area of the one side openings of each of the plurality of second holes versus the total area of the one side openings of each of the plurality of first holes is 8: 2 to 6: 4. The method of claim 1,
The lower surface of the base portion of the heat sink includes a first surface and a second surface surrounding the first surface, and the angle between the first surface and the second surface is an obtuse angle. The method according to claim 6,
The second face has a plurality of pins,
The plurality of fins are arranged to face in the direction of the second hole in the first surface. The method of claim 1,
The lower surface of the base portion of the heat dissipating device, the central portion protruding toward the blower direction. The method of claim 8,
The lower surface of the base portion of the heat sink has a plurality of fins,
And the plurality of fins provide an air passage for guiding air discharged from the blower to the second hole. A heat dissipation body including an upper end portion having a first accommodating groove and a lower end portion having a second accommodating groove, and having first and second holes penetrating the upper end portion and the lower end portion; And
A light source unit disposed in the first accommodating groove of the heat sink and having a light emitting element;
A fan disposed in the second receiving groove of the heat sink; And
And a housing coupled to a lower end of the heat sink and having a space formed on the second receiving groove.
By driving the fan, the air around the upper end of the heat sink is introduced into the first hole and outflow into the space of the housing, the air in the housing space is sucked by the fan and discharged to the second hole . 11. The method of claim 10,
The second hole of the heat sink is connected to the second receiving groove of the heat sink. 11. The method of claim 10,
And a driving unit disposed in the space of the housing and providing power to the light source unit and the fan. 11. The method according to claim 1 or 10,
And a plurality of fins disposed in the second hole of the heat sink. The method of claim 13,
The lighting device has a spacing between the plurality of pins of 2.0 (T) or more and 3.1 (T) or less. The method of claim 13,
The number of the plurality of pins is five or more eight lighting devices. The method of claim 13,
And a thickness of each of the plurality of fins is greater than or equal to 1.2 (T) and less than or equal to 2.0 (T). 11. The method according to claim 1 or 10,
The first and second holes are plural,
The number of the plurality of second holes is greater than the number of the plurality of first holes. 11. The method according to claim 1 or 10,
And an optical unit disposed on the light source unit and coupled to the radiator. The method of claim 18,
And the optical unit has a lens corresponding to the light emitting element of the light source unit.

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