KR101081312B1 - Lighting device - Google Patents

Abstract

Lighting device according to the embodiment is a heat dissipation body; Light emitting module unit on the lower surface of the heat dissipation body; A guide member coupled to a circumferential region of the lower portion of the heat dissipation body to firmly fix the light emitting module unit to the heat dissipation body; And an outer case outside the heat dissipation body, and the guide member includes an air inflow structure capable of introducing air between the heat dissipation body and the outer case.

Lighting device

Description

LIGHTING DEVICE

Embodiments relate 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. Accordingly, many researches are being conducted to replace existing light sources with light emitting diodes, and the use of light emitting diodes is increasing as a light source for lighting devices such as various lamps, liquid crystal displays, electronic displays, and street lamps that are used indoors and outdoors.

The embodiment provides a lighting device having a new structure.

The embodiment provides a lighting device having improved withstand voltage.

The embodiment provides a lighting device having good waterproof characteristics.

Embodiments provide an illumination device that is easy to handle.

The embodiment provides a lighting device having good heat dissipation characteristics.

The embodiment provides a lighting device that is easy to replace parts.

Lighting device according to the embodiment is a heat dissipation body; Light emitting module unit on the lower surface of the heat dissipation body; A guide member coupled to a circumferential region of the lower portion of the heat dissipation body to firmly fix the light emitting module unit to the heat dissipation body; And an outer case outside the heat dissipation body, and the guide member includes an air inflow structure capable of introducing air between the heat dissipation body and the outer case.

The embodiment can provide a lighting device having a new structure.

The embodiment can provide a lighting device having improved withstand voltage.

The embodiment can provide a lighting device having good waterproof characteristics.

Embodiments can provide a lighting device that is easy to handle.

The embodiment can provide a lighting device having good heat dissipation characteristics.

Embodiments can provide a lighting device that is easy to replace parts.

In the description of the embodiments, it is to be understood that each layer (film), region, pattern or structure is formed "on" or "under" a substrate, each layer The terms " on "and " under " encompass both being formed" directly "or" indirectly " In addition, the criteria for the top or bottom of each layer will be described with reference to the drawings.

In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size of each component does not necessarily reflect the actual size.

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

1 is a perspective view of the lighting device 1 according to the embodiment viewed from below, FIG. 2 is a perspective view of the lighting device 1 viewed from above, and FIG. 3 is an exploded perspective view of the lighting device 1. 4 is a view showing a cross section of the lighting device 1.

1 to 4, the lighting device 1 includes an inner case 170 including a connection terminal 175 at an upper portion and an inserting portion 174 at a lower portion thereof, and the inner case 170. The radiating body 150 including a first receiving groove 151 is inserted into the insertion portion 174 of the, and emits light on the lower surface of the radiating body 150, one or a plurality of light emitting elements 131 A light emitting module unit 130 including a guide member 100 coupled to a circumferential region below the heat dissipating body 150 to firmly fix the light emitting module unit 130 to the heat dissipating body 150; An outer case 180 is included outside the heat dissipation body 150.

The heat dissipation body 150 accommodates the light emitting module unit 130 and the power control unit 160 including accommodation grooves 151 and 152 on both sides, and the light emitting module unit 130 or / and the power control unit 160. ) To release the heat generated.

Specifically, as shown in FIGS. 3 and 4, the first receiving groove 151 in which the power control unit 160 is disposed is formed on an upper surface of the heat dissipation body 150, and the heat dissipation body 150. The second receiving groove 152 in which the light emitting module unit 130 is disposed may be formed on the bottom surface of the bottom surface.

The outer surface of the heat dissipation body 150 may have a concave-convex structure, and the heat dissipation efficiency may be improved by increasing the surface area of the heat dissipation body 150 by the concave-convex structure.

In addition, the heat dissipation body 150 may be formed of a metal or resin material having excellent heat dissipation efficiency, but is not limited thereto. For example, the material of the heat dissipation body 150 may include at least one of aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), tin (Sn), and magnesium (Mg). .

The light emitting module unit 130 may be disposed in the second receiving groove 152 formed on the bottom surface of the heat dissipation body 150. The light emitting module unit 130 may include a substrate 132 and the one or more light emitting elements 131 mounted on the substrate 132.

Each of the one or more light emitting devices 131 may include at least one light emitting diode (LED). The light emitting diodes may be red, green, blue, or white light emitting diodes emitting red, green, blue, or white light, respectively, but are not limited thereto.

The light emitting module unit 130 may be driven by being electrically connected to the power control unit 160 by wires through a through hole 153 penetrating the bottom surface of the heat dissipation body 150 to receive power. .

In this case, a second protection ring 155 is formed in the through hole 153 to prevent moisture and foreign matter from penetrating between the light emitting module unit 130 and the heat dissipation body 150, and the wire is dissipated. It is possible to prevent problems such as electrical short, withstand voltage, EMI, EMS, and the like, which may occur by contacting the body 150.

The heat sink 140 may be attached to the bottom surface of the light emitting module unit 130, and the heat sink 140 may be attached to the second receiving groove 152. Alternatively, the light emitting module unit 130 and the heat sink 140 may be integrally formed. The heat generated by the light emitting module unit 130 by the heat sink 140 may be more effectively transferred to the heat dissipation body 150.

The light emitting module unit 130 may be firmly fixed to the second receiving groove 152 by the guide member 100. The guide member 100 has an opening 101 to expose the one or a plurality of light emitting elements 131 mounted on the light emitting module unit 130, and heat dissipates the circumferential surface of the light emitting module unit 130. It can be fixed by pressing the second receiving groove 152 of the body 150.

In addition, the guide member 100 is formed with an air inlet structure that allows air to flow between the heat dissipation body 150 and the outer casing 180 to maximize the heat dissipation efficiency of the lighting device (1). have. The air inlet structure is, for example, a plurality of first heat dissipation holes 102 formed between the inner surface and the outer surface of the guide member 100 or the uneven structure formed on the inner surface of the guide member 100 Can be. This will be described later in detail.

At least one of the lens 110 and the first protective ring 120 may be included between the guide member 100 and the light emitting module unit 130.

The lens 110 may be selected to have various shapes such as a concave lens, a convex lens, a parabola type lens, and a Fresnel lens to adjust light distribution of light emitted from the light emitting module unit 130 as desired. In addition, the lens 110 may be used to change the wavelength of the light including a phosphor, but is not limited thereto.

The first protective ring 120 prevents moisture or foreign matter from penetrating between the guide member 100 and the light emitting module unit 130, and at the same time, an outer surface of the light emitting module unit 130 and the heat dissipating body ( By separating the inner surface of the 150 to prevent the light emitting module 130 is in direct contact with the heat dissipation body 150, it is possible to improve the withstand voltage, EMI, EMS and the like of the lighting device (1).

As shown in FIGS. 3 and 4, the inner case 170 includes an insertion part 174 inserted into the first receiving groove 151 of the heat dissipation body 150 in a lower region, and an external power source in the upper region. It may include a connection terminal 175 electrically connected to the.

Sidewalls of the insertion unit 174 may be disposed between the power control unit 160 and the heat dissipation body 150 to prevent electrical shorts between the two, thereby improving withstand voltage, EMI, EMS, and the like.

The connection terminal 175 may be inserted into an external power source having a socket shape to supply power to the lighting device 1. However, the shape of the connection terminal 175 may be variously modified according to the design of the lighting device 1, but is not limited thereto.

The power control unit 160 may be disposed in the first receiving groove 151 of the heat dissipation body 150. The power control unit 160 is a DC converter for converting AC power provided from an external power source to DC power, a driving chip for controlling the driving of the light emitting module unit 130, for protecting the light emitting module unit 130 An electrostatic discharge (ESD) protection element may be included, but is not limited thereto.

The outer case 180 is coupled to the inner case 170 to accommodate the heat dissipation body 150, the light emitting module unit 130, the power control unit 160, and the like to form the exterior of the lighting device 1. Can be.

Although the outer case 180 is illustrated as having a circular cross section, the outer case 180 may be designed to have a cross section such as a polygon or an ellipse, but is not limited thereto.

Since the heat dissipation body 150 is not exposed by the outer case 180, an image accident and an electric shock accident may be prevented, and the handling of the lighting device 1 may be improved.

Hereinafter, the lighting device 1 according to the embodiment will be described in detail with reference to each component.

<The radiating body 150>

5 is a perspective view of the heat dissipation body 150, and FIG. 6 is a cross-sectional view illustrating a cross section taken along line A-A 'of FIG.

4 to 6, a first accommodating groove 151 in which the power control unit 160 is disposed is formed on a first surface of the heat dissipation body 150, and a second surface opposite to the first surface is formed. A second receiving groove 152 in which the light emitting module unit 130 is disposed may be formed on a surface thereof.

However, the width and depth of the first and second receiving grooves 151 and 152 may vary depending on the width and the thickness of the power control unit 160 and the light emitting module unit 130.

The heat dissipation body 150 may be formed of a metal or resin material having excellent heat dissipation efficiency, but is not limited thereto. For example, the material of the heat dissipation body 150 may include at least one of aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), and tin (Sn).

The outer surface of the heat dissipation body 150 may have a concave-convex structure, and the heat dissipation efficiency may be improved by increasing the surface area of the heat dissipation body 150 by the concave-convex structure. The uneven structure may include, but is not limited to, an iron structure having a wave shape bent in one direction as shown.

The through hole 153 may be formed on the bottom surface of the heat dissipation body 150, and the light emitting module unit 130 and the power control unit 160 may be electrically connected to each other through the through hole 153. Can be connected.

In this case, the second protection ring 155 is coupled to the through hole 153 to prevent moisture and foreign matter from penetrating through the through hole 153, and the wire contacts the heat dissipation body 150. This can prevent problems such as electrical shorts that may occur. The second protection ring 155 may be formed of a rubber material, a silicon material, or other electrically insulating material.

A first fastening member 154 may be formed on the lower side of the heat dissipation body 150 to firmly couple the guide member 100. A hole into which a screw can be inserted may be formed in the first fastening member 154, and the screw may firmly couple the guide member 100 to the heat dissipation body 150.

In addition, the first width (P1) of the lower region of the heat dissipation body 150 to which the guide member 100 is coupled, so that the guide member 100 is easily coupled to the other side of the heat dissipation body 150. It may be narrower than the second width P2. However, this is not limitative.

<Light emitting module 130 and the first protective ring 120>

7 is a perspective view illustrating the light emitting module unit 130 and the first protection ring 120 coupled to each other, and FIG. 8 is a cross-sectional view taken along line BB ′ of FIG. 7.

3, 7 and 8, the light emitting module unit 130 is disposed in the second receiving groove 152 of the heat dissipating body 150, and a peripheral area of the light emitting module unit 130. The first protective ring 120 is coupled to.

The light emitting module unit 130 may include a substrate 132 and the one or more light emitting elements 131 mounted on the substrate 132.

The substrate 132 may be 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, the substrate 132 may be formed of a material that reflects light efficiently, or the surface may be formed of a color that reflects light efficiently, for example, white, silver, or the like.

The one or more light emitting elements 131 may be mounted on the substrate 132. Each of the one or more light emitting devices 131 may include at least one light emitting diode (LED). The light emitting diodes may be red, green, blue, or white light emitting diodes emitting red, green, blue, or white light, respectively, but are not limited thereto.

In addition, arrangement | positioning of the said one or some light emitting element 131 is not limited. However, in the embodiment, the wiring is formed under the light emitting module unit 130, and the light emitting device may not be mounted in the area where the wiring is formed among the areas of the light emitting module unit 130. For example, when the wiring is formed in the middle region of the light emitting module unit 130, the light emitting device may not be mounted in the middle region.

The heat sink 140 may be attached to a bottom surface of the light emitting module unit 130. The heat sink 140 may be formed of a thermally conductive silicon pad or a thermal conductive tape having excellent thermal conductivity, and may effectively transfer heat generated by the light emitting module unit 130 to the heat dissipating body 150.

The first protection ring 120 may be formed of a rubber material, a silicon material, or other electrically insulating material, and may be formed in a circumferential region of the light emitting module unit 130.

Specifically, as shown, the first protection ring 120 may include a step 121 at an inner lower end, and the side area and the upper surface of the light emitting module unit 130 at the step 121. Peripheral areas may contact. However, this is not limitative.

In addition, the inner upper end of the first protection ring 120 may be formed to have an inclination 122 to improve light distribution of the light emitting module unit 130.

The first protection ring 120 prevents moisture or foreign matter from penetrating between the guide member 100 and the light emitting module unit 130, and at the same time, a side region of the light emitting module unit 130 is formed in the heat dissipating body ( By preventing direct contact with 150, the withstand voltage, EMI, EMS, etc. of the lighting device 1 may be improved.

In addition, the first protection ring 120 may firmly fix the light emitting module unit 130 and protect it from external impact, thereby improving reliability of the lighting device 1.

In addition, referring to FIG. 11, when the lens 110 is disposed on the first protection ring 120, the lens 110 is connected to the light emitting module unit 130 by the first protection ring 120. It may be disposed so as to be spaced apart from the first distance (h), it can be easier to adjust the light distribution of the lighting device (1).

<Guide member 100>

9 is a perspective view of the guide member 100, and FIG. 10 is a plan view of the guide member 100.

4, 9 and 10, the guide member 100 includes an opening 101 through which the light emitting module unit 130 is exposed, a plurality of first heat dissipation holes 102 between the inside and the outside of the guide member 100. It may include a fastening groove 103 coupled to the heat dissipation body 150.

The guide member 100 is shown in the form of a circular ring, but may have a polygonal or oval ring shape, but is not limited thereto.

One or a plurality of light emitting elements 131 of the light emitting module unit 130 are exposed through the opening 101. However, since the guide member 100 compresses the light emitting module unit 130 to the second receiving groove 152, the width of the opening 101 is greater than that of the light emitting module unit 130. Small ones are preferable.

Specifically, as the guide member 100 is coupled to the heat dissipation body 150, the guide member 100 includes the lens 110, the first protective ring 120, and the light emitting module unit ( By applying pressure to the circumferential region of the 130, the lens 110, the first protection ring 120, and the light emitting module unit 130 may be firmly fixed to the second receiving groove 152 of the heat dissipating body 150. Therefore, the reliability of the lighting device 1 can be improved.

The fastening groove 103 may couple the guide member 100 to the heat dissipation body 150. For example, as shown in FIG. 4, after the hole of the first fastening member 154 of the heat dissipating body 150 and the fastening groove 103 of the guide member 100 are opposed to each other, the first fastening is performed. The guide member 100 and the heat dissipation body 150 may be coupled to each other by inserting a screw into the hole of the member 154 and the fastening groove 103, but is not limited thereto.

On the other hand, when the internal parts such as the power control unit 160, the light emitting module unit 130, etc. of the lighting device 1 is required, the guide member 100 can be easily separated from the heat dissipation body 150. Therefore, the user or the like can easily maintain the lighting device 1.

The plurality of first heat dissipation holes 102 are formed between the inside and the outside of the guide member 100, and the plurality of first heat dissipation holes 102 smoothly flows air inside the lighting device 1. This can maximize the heat dissipation efficiency. This will be described below.

11 is an enlarged cross-sectional view showing a lower region of the lighting device 1 according to the embodiment, FIG. 12 is a bottom view of the lighting device 1, and FIG. 13 is a top view of the lighting device 1.

11 to 13, the air (AIR) introduced into the lighting device 1 through the plurality of first heat dissipation holes 102 includes a yaw structure (b) and a side surface of the heat dissipation body 150. It flows into the iron structure (a). And, by air convection principle, the air (AIR) warmed through the uneven structure of the heat dissipation body 150 is a plurality of ventilation holes 182 formed between the inner case 170 and the outer case 180. Can be escaped. Alternatively, the air introduced into the plurality of ventilation holes 182 may escape through the plurality of first heat dissipation holes 102, but is not limited thereto.

That is, since the plurality of first heat dissipation holes 102 and the plurality of ventilation holes 182 enable heat dissipation using an air convection principle, the heat dissipation efficiency of the lighting device 1 can be maximized.

On the other hand, the shape of the air inlet structure of the guide member 100 is not limited thereto, and may be variously modified. For example, as illustrated in FIG. 14, the guide member 100A according to another embodiment may be formed such that an inner surface thereof has an uneven structure, and air may be introduced through the uneven structure 102A.

<Lens 110>

4 and 11, the lens 110 is formed under the light emitting module 130 to control light distribution of light emitted from the light emitting module 130.

The lens 110 may have various shapes. For example, the lens 110 may include at least one of a parabola-type lens, a Fresnel lens, a convex lens, or a concave lens.

The lens 110 may be disposed below the light emitting module unit 130 so as to be spaced apart from the first distance h, and the first distance h may be 0 mm to 50 mm according to the design of the lighting device 1. Can be. However, this is not limitative.

The first distance h may be maintained by the first protection ring 120 disposed between the light emitting module unit 130 and the lens 110. Alternatively, by forming a separate support part for supporting the lens 110 in the second receiving groove 152 of the heat dissipation body 150, the light emitting module unit 130 and the lens 110 between the The first distance h may be maintained but is not limited thereto.

In addition, the lens 110 may be fixed by the guide member 100. That is, the inner surface of the guide member 100 is in contact with the lens 110, the lens 110 and the light emitting module 130 by the inner surface of the guide member 100 is the heat dissipation body ( It is pressed and fixed to the second receiving groove 152 of 150.

The lens 110 may be formed of a material such as glass, polymethylmethacrylate (PMMA), or polycarbornate (PC).

In addition, according to the design of the lighting device 1, the lens 110 is formed to include a phosphor, or a photo-excited film (PLF: Photo Luminescent) including a phosphor on the incidence or exit surface of the lens 110 Film) may be attached. The light emitted from the light emitting module unit 130 by the phosphor changes in wavelength and is emitted.

<Inner case 170>

15 is a perspective view of the inner case 170.

4 and 15, the inner case 170 may include an insertion part 174 inserted into the first accommodating groove 151 of the heat dissipation body 150 and a connection terminal electrically connected to an external power source. 175 and the second fastening member 172 coupled to the outer case 180.

The inner case 170 may be formed of a material having excellent insulation and durability, and for example, may be formed of a resin material.

The insertion portion 174 is formed in the lower region of the inner case 170, the side wall of the insertion portion 174 is inserted into the first receiving groove 151, the power control unit 160 and the heat dissipation body. By preventing the electrical short between the 150 and the like, the withstand voltage of the lighting device 1 can be improved.

The connection terminal 175 may be connected to an external power source, for example, in a socket manner. That is, the connection terminal 175 may include an insulating member 179 between the first electrode 177 at the apex, the second electrode 182 at the side, and the first electrode 177 and the second electrode 182 at the apex. The first and second electrodes 177 may be powered by an external power source. However, the shape of the connection terminal 175 may be variously modified according to the design of the lighting device 1, but is not limited thereto.

The second fastening member 172 may be formed at a side surface of the inner case 170 to include a plurality of holes, and a screw or the like may be inserted into the plurality of holes to allow the inner case 170 and the outer case ( 180) can be combined.

In addition, a plurality of second heat dissipation holes 176 are formed in the inner case 170, thereby improving heat dissipation efficiency inside the inner case 170.

<Internal Structure of Power Supply Control Unit 160 and Internal Case 170>

Referring to FIG. 4, the power control unit 160 may be disposed in the first accommodating groove 151 of the heat dissipation body 150.

The power control unit 160 may include a support substrate 161 and a plurality of components 162 mounted on the support substrate 161. The plurality of components 162 may include, for example, an external power source. DC conversion device for converting the AC power provided from the DC power source, a driving chip for controlling the driving of the light emitting module unit 130, ESD (ElectroStatic discharge) protection element for protecting the light emitting module unit 130, etc. It may include, but is not limited to this.

At this time, as shown, the support substrate 161 may be placed upright in the vertical direction in order to smooth the air flow in the inner case 170. Therefore, as compared with the case in which the support substrate 161 is disposed in the horizontal direction, air flow may occur due to convection in the up and down direction inside the inner case 170, so that the heat radiation efficiency of the lighting device 1 may be increased. This can be improved.

On the other hand, the support substrate 161 may be disposed in the horizontal direction in the inner case 170, but is not limited thereto.

The power control unit 160 may be electrically connected to the connection terminal 175 of the inner case 170 and the light emitting module unit 130 by the first wiring 164 and the second wiring 165, respectively.

In detail, the first wire 164 is connected to the first electrode 177 and the second electrode 182 of the connection terminal 175 to receive power from an external power source.

In addition, the second wire 165 may pass through the through hole 153 of the heat dissipation body 150 to electrically connect the power control unit 160 and the light emitting module unit 130 to each other.

However, since the support substrate 161 is placed upright in the inner case 170 in the vertical direction, when the lighting apparatus 1 is used for a long time, the second wiring 165 is pressed against the support substrate 161. Damage can occur.

Therefore, in the embodiment, as shown in FIG. 16, the protrusion 159 is formed around the through hole 153 on the bottom surface of the heat dissipation body 150 to support the support substrate 161 and the Damage to the second wiring 165 can be prevented in advance.

<Outer case 180>

The outer case 180 is coupled to the inner case 170 to accommodate the heat dissipation body 150, the light emitting module unit 130, the power control unit 160, and the like to form the exterior of the lighting device 1. Can be.

Since the heat dissipation body 150 is not exposed by the outer case 180, a burn accident and an electric shock accident can be prevented, and a user can easily handle the lighting device 1. Hereinafter, the outer case 180 will be described in detail.

17 is a perspective view of the outer case 180.

Referring to FIG. 17, the outer case 180 includes an opening 181 into which the inner case 170 is inserted, and a coupling groove coupled to the second fastening member 172 of the inner case 170. 183 and the plurality of ventilation holes 182 for introducing or discharging air into the lighting device.

The outer case 180 may be formed of a material having excellent insulation and durability. For example, the outer case 180 may be formed of a resin material.

The inner case 170 is inserted into the opening 181 of the outer case 180, and the coupling groove 183 and the second fastening member 172 of the inner case 170 are coupled to each other by screws or the like. As a result, the outer case 180 and the inner case 170 may be coupled to each other.

As described above, the plurality of ventilation holes 182 together with the plurality of first heat dissipation holes 102 of the guide member 100 enable a smooth air flow in the lighting device 1 to allow the lighting device 1 ) Can improve the heat dissipation efficiency.

As shown, the plurality of ventilation holes 182 may be formed in the peripheral area of the upper surface of the outer case 180, may have a fan-shaped arc shape, but is not limited thereto. In addition, the coupling groove 183 may be formed between the plurality of ventilation holes 182.

Meanwhile, at least one of a plurality of holes 184 for improving heat dissipation efficiency and a marking groove 185 for facilitating handling of the lighting device 1 may be formed at a side of the outer case 180. . However, the plurality of holes 184 and the marking grooves 185 may not be formed, but are not limited thereto.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

In addition, the above description has been made with reference to the embodiment, which is merely an example, and is not intended to limit the present invention. Those skilled in the art to which the present invention pertains will be illustrated as above without departing from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

1 is a perspective view of a lighting device according to an embodiment as viewed from below;

FIG. 2 is a perspective view of the lighting device of FIG. 1 viewed from above. FIG.

3 is an exploded perspective view of the lighting apparatus of FIG.

4 shows a cross section of the lighting device of FIG. 1;

5 is a perspective view of a heat dissipating body of the lighting apparatus of FIG.

6 is a cross-sectional view taken along the line AA ′ of FIG. 5.

7 is a perspective view of a combination of the light emitting module unit and the first protective ring of the lighting device of FIG.

FIG. 8 is a sectional view taken along the line B-B 'of FIG.

9 is a perspective view of a guide member of the lighting apparatus of FIG.

10 is a plan view of the guide member of FIG.

11 is an enlarged cross-sectional view showing a lower region of the lighting device of FIG.

12 is a bottom view of the lighting device of FIG.

FIG. 13 is a top view of the lighting device of FIG. 1. FIG.

14 is a perspective view of a guide member of a lighting apparatus according to another embodiment

15 is a perspective view of an inner case of the lighting device of FIG.

16 is a view showing a heat dissipation body of the lighting apparatus according to another embodiment

17 is a perspective view of an outer case of the lighting device of FIG.

Claims (18)

Heat dissipation body including an uneven structure on the outer side; Light emitting module unit on the lower surface of the heat dissipation body; A guide member coupled to a circumferential region of the lower portion of the heat dissipation body and having an air inflow structure; And It includes an outer case disposed on the outside of the heat dissipation body, The air inlet structure is a lighting device having a structure in which air flows between the outer case and the outer case of the heat dissipation body so that the air convex along the uneven structure of the heat dissipation body. The method of claim 1, The air inlet structure is a lighting device having a plurality of first heat dissipation holes formed between the inside and the outside of the guide member. The method of claim 1, The air inlet structure has a concave-convex structure formed on the inner surface of the guide member. The method of claim 1, The guide member includes an opening to expose the light emitting module unit. The method of claim 1, The outer case is a lighting device including a plurality of ventilation holes. The method of claim 5, The plurality of ventilation holes are formed in the peripheral region of the upper surface of the outer case, the lighting device having a fan-shaped arc shape. The method of claim 1, The heat dissipation body includes a first accommodating groove, the first accommodating groove is a lighting device is disposed. The method of claim 7, wherein It includes a connection terminal on one side and an insertion portion on the other side, the insertion unit further comprises an inner case inserted into the first receiving groove. The method of claim 8, The side wall of the insertion unit is disposed between the inner surface of the first receiving groove and the power control unit. The method of claim 8, The outer case includes an opening, wherein the inner case is inserted into the opening is coupled to the inner case and the outer case. delete The method of claim 1, The uneven structure is a lighting device including a wave-shaped iron structure bent in one direction. The method of claim 1, The light emitting module unit includes a substrate and one or more light emitting elements mounted on the substrate. The method of claim 13, And each of the one or more light emitting elements comprises at least one light emitting diode, wherein the light emitting diode is a red, green, blue or white light emitting diode emitting red, green, blue or white light, respectively. The method of claim 1, Lighting device including a lens between the light emitting module unit and the guide member. The method according to claim 1 or 15, Lighting device including a protective ring between the light emitting module unit and the guide member. The method of claim 8, The inner case is a lighting device formed with a plurality of second heat dissipation holes. A heat sink including an uneven structure; A light emitting module unit disposed on the heat sink and including a substrate and a light emitting device disposed on the substrate; A ring member coupled to a portion of the heat sink and having an air inlet hole; And An outer case disposed outside the heat sink and having at least one hole; Lighting device in which air flows between the heat sink and the outer case through the air inlet hole of the guide member so that air flows along the uneven structure of the heat sink.

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