KR20160118777A

KR20160118777A - Lighting apparatus

Info

Publication number: KR20160118777A
Application number: KR1020150047468A
Authority: KR
Inventors: 김석현; 황용주; 이영주
Original assignee: 동부라이텍 주식회사
Priority date: 2015-04-03
Filing date: 2015-04-03
Publication date: 2016-10-12
Also published as: KR101686136B1

Abstract

A lighting device is disclosed. A lighting device of the present invention includes: a light emitting module including a substrate in a flat plate shape in a horizontal direction, a through hole penetrating in a vertical direction at the center of the substrate, and a light emitting element formed on the bottom surface of the substrate around the through hole; A main body coupled to the upper side of the substrate; A plurality of heat radiating fins formed on the upper side of the main body and repeatedly formed along the circumferential direction around the through holes; A lens cover which covers the light emitting element on the bottom surface of the light emitting module and in which a central inflow hole communicating with the space between the through hole and the radiation fin is formed; And a lower cover coupled to the main body and having a plurality of first peripheral inflow holes formed in a ring shape and supporting the lens cover frame and communicating with a space between the radiator fins, And the air introduced through the peripheral inflow hole is discharged to the outside through the space between the radiating fins. According to the present invention, not only the assembly is easy, the stable connection between the structures is maintained, but also the air introduced into the illuminator through the central inflow hole and the first peripheral inflow hole is discharged to the outside through the space between the radiator fins , Air circulation by convection can be performed quickly, and an illumination device having excellent heat radiation effect can be provided.

Description

LIGHTING APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus, and more particularly, to a lighting apparatus including a plurality of radiating fins so that a plurality of light emitting elements can be used for illumination and heat can be effectively dissipated.

In recent years, a lighting lamp using a light emitting diode (LED) as a light source is widely used as an illumination lamp using electric energy.

A light emitting diode (LED) is smaller in size than a conventional incandescent lamp or a fluorescent lamp, has a long life span and is favorable for energy efficiency. However, since the life is shortened when the heat emitted from the LED is not properly discharged, Emission of heat generated is an important factor in the manufacture of LED lamps.

In this regard, Korean Patent No. 10-1308394 discloses a " optical semiconductor-based illumination apparatus ", and specifically discloses a lighting apparatus in which a bracket assembly incorporating a power supply device is mounted on an upper side of a heat sink having a fixed unit, It is described that the installation and construction are easy to apply to the light, the fault location is easy to grasp, and maintenance and replacement can be made easily.

On the other hand, in order to increase the amount of light (light amount), the amount of the light emitting element to be used must be increased. For the heat dissipation required at this time, most lighting devices are provided with a heat sink or a heat dissipating fin.

However, when a plurality of light emitting devices are used, the volume of the lighting device is increased, and a plurality of heat-dissipating fins are also required, so that the volume of the lighting device as a whole is further increased. At this time, It is possible to cause malfunction or breakage of the lighting device. Therefore, it is required to provide a lighting device of a type that can prevent this.

(0001) Korea Patent No. 10-1308394 (Notification: 2013.09.26)

It is an object of the present invention to provide a lighting device having a structure in which heat dissipation can be effectively performed while using a plurality of light emitting devices for illumination.

The above object is achieved by a light emitting module comprising a substrate in the form of a flat plate in a horizontal direction, a through hole penetrating in the vertical direction at the center of the substrate, and a light emitting element formed on the bottom surface of the substrate around the through hole. A main body coupled to the upper side of the substrate; A plurality of heat radiating fins formed on the upper side of the main body and repeatedly formed along the circumferential direction about the through holes; A lens cover covering the light emitting device at a bottom surface of the light emitting module and having a central inflow hole communicating with a space between the through hole and the radiating fin; And a lower cover coupled to the main body and having a plurality of first peripheral inflow holes formed in a ring shape and supporting the frame of the lens cover and communicating with the space between the radiating fins, Holes and the air introduced through the first peripheral inflow holes can be discharged to the outside through a space between the radiating fins.

The upper cover may be disposed on the upper side of the plurality of radiating fins and may include a radiating hole. Air between the radiating fins may be discharged through the radiating hole.

Further, the present invention further includes a converter housing located at the center of the plurality of radiating fins, wherein a power supply unit for supplying power to the light emitting element is housed therein, and a first inclined wall inclined upward toward the outside is formed on the bottom surface And the inner end of the first inclined wall may be located outside the center of the central inflow hole.

Wherein the radiating fin includes: an inner plate located below the converter housing; And an outer plate extending from the inner plate and positioned outside the converter housing, and the air introduced through the central inlet hole can be moved on the bottom surface of the first inclined wall.

A plurality of pinholes may be formed through the inner plate and the outer plate, respectively.

The main body may include: a central connector coupled to a bottom surface of the converter housing; A peripheral coupler surrounding the central coupler, spaced apart from the central coupler and closely coupled to the substrate; And a connection body connecting the center assembly and the peripheral assembly such that at least one communication hole communicating with the central inlet hole is provided between the center assembly and the peripheral assembly.

A second inclined wall inclined upward toward the outside is formed on the bottom surface of the center coupling body, and an outer end of the second inclined wall is positioned or coincident with the inner end of the first inclined wall Lt; / RTI >

The lens cover may be formed with a cover connecting arm protruding toward the center of the central inflow hole and coupled with the center connector.

The illuminating device according to the present invention is characterized in that it comprises a tight contact portion which is in tight contact with the bottom surface of the lower cover and through which a second peripheral inflow hole communicating with the first peripheral inflow hole is passed and a lower end portion which extends downward from the outer end of the tight contact portion, And a shade including a skirt portion having a diameter enlarged toward the center of the shade.

In addition, each of the lower cover and the close portion may be inclined downward toward the inner side in a portion where the first peripheral inflow hole and the second peripheral inflow hole are formed.

According to the present invention, not only the assembly is easy, the stable connection between the structures is maintained, but also the air introduced into the illuminator through the central inflow hole and the first peripheral inflow hole is discharged to the outside through the space between the radiator fins , Air circulation by convection can be performed quickly, and an illumination device having excellent heat radiation effect can be provided.

1 is a perspective view showing a lighting apparatus according to an embodiment of the present invention,
Fig. 2 is an exploded perspective view showing the illumination device shown in Fig. 1,
Figs. 3 and 4 are sectional views showing the lighting apparatus shown in Fig. 1,
FIG. 5 is a view showing simulation of air moving in a lighting apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

Fig. 1 is a perspective view showing a lighting apparatus 1 according to an embodiment of the present invention, Fig. 2 is an exploded perspective view showing the lighting apparatus 1 shown in Fig. 1, Fig. 3 and Fig. FIG. 5 is a view showing a simulation of a movement of air in the lighting apparatus 1 according to the present invention. FIG.

The lighting device 1 according to the present invention can be configured to be coupled to a ceiling or the like so as to illuminate the bottom, and accordingly, the description of the lighting device 1 according to the present invention will be described with reference to FIG. And explain it.

The lighting apparatus 1 according to the present invention includes a light emitting module 10, a main body 20, a radiating fin 30, a lens cover 40, and a lower cover 50. It further comprises an upper cover 60, a converter housing 70 and a shade 80.

The light emitting module 10 includes a substrate 11, a through hole 12, and a light emitting element 13. The light emitting module 13 is a light emitting device. Here, the light emitting device 13 may be a light emitting diode (LED).

The substrate 11 is formed in a flat plate shape in the horizontal direction, and may be formed in a polygonal shape including a square in a plan view, but is preferably formed in a circular shape.

The substrate 11 is provided with a through hole 12 penetrating in the vertical direction at the center and the light emitting module 10 is preferably symmetrical around the through hole 12 in the circumferential direction. In the case where the substrate 11 is formed in a disc shape, the through hole 12 is also preferably formed in the shape of a circular hole.

In the present invention, an imaginary axis extending in the longitudinal direction passing through the center of the through hole 12 is referred to as a center axis s.

The light emitting device 13, which may be an LED or the like, is coupled to the bottom surface of the substrate 11 in the periphery of the through hole 12. The plurality of light emitting devices 13 may be spaced apart from each other, and may be arranged with a constant pattern or with a constant spacing.

The main body 20 also has a substantially flat plate shape in a horizontal direction, and is coupled to the upper side of the substrate 11 in a tightly closed state. The main body 20 is a center of the lighting apparatus 1 according to the present invention and is connected to the light emitting module 10, the lens cover 40 and the lower cover 50 in the lower direction of the main body 20, The radiator fins 30, the converter housing 70, and the upper cover 60 are coupled to the main body 20 in the upward direction.

A separate fastening means such as a bolt can be coupled to the main body 20 and the light emitting module 10 and the bolt can be screwed to the main body 20 through the substrate 11. [

The main body 20 is preferably made of a material having a high thermal conductivity of metallic material so as to effectively transmit heat generated from the light emitting module 10 while maintaining rigidity to stably support the light emitting module 10 For this purpose, the main body 20 may be made of aluminum or an aluminum alloy.

A plurality of circular protrusions 22a protrude from the upper surface of the main body 20. The circular protrusions 22a are formed in a hemispherical shape and arranged at regular intervals along the circumferential direction with respect to the center axis s do.

The main body 20 may be divided into a center joint body 21, a peripheral joint body 22, and a joint body 23.

The center joint 21 forms the center of the main body 20 and is located on the center axis s.

The central joint body 21 is formed in a circular shape on a plan view and a second inclined wall 21a inclined upward toward the outside is formed on the bottom surface of the center joint body 21. [ The second inclined wall 21a is formed in the entire circumferential direction around the center axis s.

The second inclined wall 21a forms part of the movement path (upper surface of the channel) when the air introduced through the central inflow hole 41 of the lens cover 40 moves toward the radiating fin 30, So as to guide the air to move smoothly toward the heat radiating fin 30. [0051] As shown in Fig.

The peripheral joint 22 is a portion that surrounds the center joint 21 and is spaced apart from the center joint 21 and tightly coupled to the substrate 11. [ The above-described circular protrusion 22a is formed on such a peripheral joint 22.

The connecting body 23 connects the center connector 21 and the peripheral connector 22 to each other so that the communication hole 24 is provided between the center connector 21 and the peripheral connector 22. It is preferable that the connecting body 23 is integrally formed with the center coupling body 21 and the peripheral coupling body 22.

The connection members 23 may be provided in a plurality of units and may be repeatedly formed at regular intervals around the central axis s.

The communication hole 24 communicates with the through hole 12 of the light emitting module 10 and the central inflow hole 41 of the lens cover 40 so that the air introduced into the lighting device 1 flows through the heat dissipation fin 30, .

A plurality of heat dissipation fins 30 are provided on the main body 20 and are arranged in the circumferential direction around the through holes 12. [

The radiating fins 30 are preferably made of a material having a high thermal conductivity in order to closely contact the upper side of the main body 20 and effectively receive heat generated from the main body 20 side (the light emitting module 10 side) And the radiating fins 30 may also be made of aluminum or an aluminum alloy.

The radiating fin 30 may be divided into a pair of vertical plates 31 and a horizontal plate 32 connecting the pair of vertical plates 31 to each other. The horizontal board 32 is a portion which is in close contact with the upper surface of the main body 20 and the vertical board 31 is a portion bent upward from the end of the horizontal board 32 and facing the vertical direction.

The horizontal plate 32 is formed with a circular groove 32a penetrating in the vertical direction and the circular protrusion 22a of the main body 20 is inserted into the circular groove 32a.

Accordingly, when the radiating fins 30 are coupled to the main body 20, the coupling positions of the radiating fins 30 can be easily confirmed, the gap between the radiating fins 30 can be easily maintained, And the main body 20 can be stably engaged.

The radiating fin 30 includes an inner plate 31a and an outer plate 31b and the inner plate 31a and the outer plate 31b constitute the vertical plate 31 described above. The inner plate 31a and the outer plate 31b are formed so as to be flush with each other and the inner plate 31a is located relatively inward in the lighting apparatus 1 and the outer plate 31b is located relatively outside Section.

3, the inner plate 31a has a height decreasing toward the center axis s and the outer plate 31b has a height increasing toward the center axis s . Particularly, the upper edge of the inner plate 31a is formed to correspond to the inclination of the first inclined wall 71, but is formed to be slightly spaced from the first inclined wall 71, Accordingly, the air moving on the first inclined wall 71 can be more easily moved toward the heat radiating fin 30.

In the lighting apparatus 1 according to the present invention, a plurality of pinholes 31c are formed in the inner plate 31a and the outer plate 31b, respectively, so that air communication is smoothly performed in the space between the respective radiating fins 30 .

The upper cover 60 is formed to cover the heat radiating fins 30 and a plurality of heat radiating holes 61 are formed through the upper cover 60 so that the space between the heat radiating fins 30 can communicate with the outside.

The upper cover 60 has a shape corresponding to the size and shape of the combined radiating fins 30 when the entire radiating fins 30 are combined. Specifically, the outer edge 62 of the upper cover 60 is formed so as to surround the outer end of the outer plate 31b, and the inner edge 63 of the upper cover 60 is formed in the shape of an outer edge of the outer plate 31b And a plurality of ribs 64 are connected between the outer rim 62 and the inner rim 63 to form a plurality of heat dissipating holes 61 on the upper cover 60 .

The converter housing 70 is located at the center of the plurality of heat dissipation fins 30 in a state where the plurality of heat dissipation fins 30 are assembled and is opened upward to accommodate the power supply apparatus 100 therein. The power supply unit 100 includes a converter and controls electric energy supplied from the outside to be stably transmitted to the light emitting device 13 of the light emitting module 10. [

In the lighting apparatus 1 according to the present invention, the converter housing 70 protects the power supply apparatus 100 and forms a passage through which the air naturally moves. To this end, the converter housing 70 is provided with an outward- The first inclined wall 71 inclined upward is formed. The first inclined wall 71 is formed in the entire circumferential direction around the central axis s.

The first inclined wall 71 forms part of the movement path (upper surface of the channel) when the air introduced through the communication hole 24 of the main body 20 moves toward the radiating fin 30, And guides the air to move naturally to the radiating fin 30 (particularly toward the outer plate 31b) by forming an upwardly inclined surface.

In the lighting apparatus 1 according to the present invention, the outer end of the second inclined wall 21a is positioned or coincides with the inner end of the first inclined wall 71. [ The air that has flowed into the interior of the lighting apparatus 1 through the surface formed by the second inclined wall 21a is moved upward on the surface formed by the first inclined wall 71, So that the air can be quickly moved toward the radiating fins 30.

The entire shape of the lens cover 40 is formed in the form of a flat plate in the horizontal direction and is joined to the light emitting module 10 side from the bottom surface of the light emitting module 10 and covers the light emitting element 13 in particular. The lens cover 40 is made of a transparent material so that light of the light emitting element 13 can be transmitted and irradiated. In particular, the lens cover 40 may be made of PMMA (Polymethly Methacrylate) or PC (Polycarbonate).

The lens cover 40 is provided with a plurality of lenses 42 protruding toward the light emitting element 13 and a surface opposite to the light emitting element 13 in the lens cover 40 forms a flat surface.

Each of the lenses 42 is protruded toward the light emitting element 13 and has a concave depression at its center to provide a groove 42a in which the light emitting element 13 is received. One or two light emitting devices 13 may be accommodated in the groove 42a of each lens 42. [

A central inflow hole 41 penetrating in the vertical direction is formed at the center of the lens cover 40. The central inflow hole 41 communicates with the through hole 12 and communicates with the space between the radiating fins 30 do.

It is preferable that the central inflow hole 41 constitutes an inlet of air introduced into the center of the illuminating device 1 and its diameter is made to coincide with the inner diameter of the peripheral joint 22. [ The diameter of the center inflow hole 41 is preferably in the range of 1/6 to 1/3 of the diameter of the lens cover 40 so that a sufficient number of the light emitting devices 13 are provided and smooth air inflow .

A cover connecting arm 43 is formed on the lens cover 40 and the cover connecting arm 43 protrudes toward the center from the inner edge of the donut-shaped lens cover 40. That is, the cover connecting arm 43 protrudes toward the center of the central inflow hole 41, and this cover connecting arm 43 is engaged with the center connector 21. [

It is preferable that the diameter of the end of the cover connecting arm 43 is made to correspond to the diameter of the lower end of the central coupling body 21 and that the cover connecting arm 43 and the central coupling body 21 are connected to each other using a separate fastening means such as a bolt Or the like.

The lower cover 50 is formed in a ring shape so as to support the lower edge of the lighting apparatus 1. [ That is, the lower cover 50 has a wide opening at the center. When the light emitting module 10, the main body 20, and the like are circular, the lower cover 50 is also formed as a circular ring.

The lower cover 50 of the illumination device 1 according to the present invention can be directly coupled with the main body 20 in a state in which the outer edge of the lens cover 40 is interposed, The light emitting module 10 and the lens cover 40 located on the lower side are more firmly coupled to the main body 20. The coupling of the lower cover 50 and the main body 20 can be achieved by a separate means such as a bolt.

The lower cover 50 is used as means for supporting and coupling the lower end of the lighting apparatus 1 and is also used as a means for allowing air to flow smoothly into a space between the radiating fins 30. [ To this end, a first peripheral inflow hole 52 is formed in the lower cover 50, and a first peripheral inflow hole 52 is formed over the entirety of the lower cover 50 and spaced apart from each other in the circumferential direction.

The lower cover 50 is inclined downward toward the center of the lighting device 1 at the portion where the first peripheral inflow hole 52 is formed and this portion becomes the first inclined portion 51. That is, as shown in FIG. 3, the first inclined portion 51 is formed not in a horizontal direction or a vertical direction but in an inclined shape. On the first inclined portion 51, a first peripheral inflow hole 52 are formed through.

The air introduced into the lighting apparatus 1 through the first peripheral inflow hole 52 flows into the space between the radiating fins 30 and then is discharged to the outside to be radiated.

The shade 80 constitutes the lowermost part of the lighting apparatus 1 according to the present invention and extends downward from the lower cover 50 so that the light emitted from the light emitting element 13 of the light emitting module 10 is emitted downward And also serves as a guide for air (air for heat radiation) flowing into the interior of the lighting apparatus 1. [

For this purpose, the shade 80 is formed to be constant along the circumferential direction around the central axis s, and is divided into a tight contact portion 81 and a skirt portion 82.

The tight contact portion 81 is formed in a ring shape and tightly coupled to the lower cover 50 and the second peripheral inflow hole 84 is formed at a position corresponding to the first peripheral inflow hole 52 . The second peripheral inflow hole 84 preferably has the same size and shape as the first peripheral inflow hole 52.

Therefore, when the lower cover 50 and the shade 80 are coupled, the first peripheral inflow hole 52 and the second peripheral inflow hole 84 coincide with each other.

The contact portion 81 is inclined downward toward the center of the illumination device 1 at the portion where the second peripheral inflow hole 84 is formed and this portion becomes the second inclined portion 83 . 3, the second inclined portion 83 is not formed in the horizontal direction or the vertical direction, but is formed in a sloped form And a second peripheral inflow hole 84 is formed on the second inclined portion 83.

It is preferable that the second inclined portion 83 and the first inclined portion 51 are inclined to the same degree in a state of being in close contact with each other.

The skirt portion (82) extends downward from the outer end of the tight fitting portion (81), and the diameter of the skirt portion (82) increases toward the lower side to form an inclined surface.

For effective illumination, an inner surface of the skirt portion 82 may be coated with or combined with another means having excellent reflectivity.

The air flowing into the shade 80 from the lower end of the skirt portion 82 travels upward on the inner wall surface of the skirt portion 82 and moves to the second inclined portion 83 while moving to the second peripheral inflow hole 84 To the inside of the lighting apparatus 1. [0050] At this time, in the lighting apparatus 1 according to the present invention, the moving direction of the air through the first peripheral inflow hole 52 and the second peripheral inflow hole 84 corresponds to the forming direction of the inner side surface of the skirt portion 82 It is possible to minimize the resistance when the air is introduced and to move the air quickly between the radiating fins 30, thereby providing the lighting apparatus 1 with excellent heat dissipation efficiency.

As described above, the illumination device 1 according to the present invention is not only easy to assemble and maintains a stable coupling between the structures, but also allows illumination of the illumination device 1 through the central inflow hole 41 and the first peripheral inflow hole 52, Not only the air sufficiently flows into the inside of the radiator 1 but also the inflow air is quickly moved to the space between the radiating fins 30 to be discharged to the outside, so that air circulation by convection is smoothly performed, Thereby making it possible to provide the device 1.

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 embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: Lighting device 10: Light emitting module
11: substrate 12: through hole
13: light emitting element 20: main body
21: center coupling body 21a: second inclined wall
22: peripheral joint 22a: circular protrusion
23: connecting body 24: communication hole
30: radiating fin 31: vertical plate
31a: Inner plate 31b: Outer plate
31c: pinhole 32: horizontal plate
32a: Circular groove
40: Lens cover 41: Central inflow hole
42: Lens 43: Cover connection arm
50: lower cover 51: first inclined portion
52: first peripheral inflow hole 60: upper cover
61: heat dissipating hole 70: converter housing
71: first inclined wall 80: shade
81: tight contact portion 82: skirt portion
83: second inclined portion 84: second peripheral inflow hole
100: Power supply

Claims

A light emitting module including a substrate in the form of a flat plate in a horizontal direction, a through hole penetrating vertically in the center of the substrate, and a light emitting element formed on the bottom surface of the substrate around the through hole;
A main body coupled to the upper side of the substrate;
A plurality of heat radiating fins formed on the upper side of the main body and repeatedly formed along the circumferential direction about the through holes;
A lens cover covering the light emitting device at a bottom surface of the light emitting module and having a central inflow hole communicating with a space between the through hole and the radiating fin; And
And a lower cover coupled to the main body and having a plurality of first peripheral inflow holes formed in a ring shape and supporting the frame of the lens cover and communicating with a space between the radiating fins,
And the air introduced through the central inflow hole and the first peripheral inflow hole can be discharged to the outside through the space between the radiating fins.

The method according to claim 1,
Further comprising an upper cover located on the upper side of the plurality of the radiating fins and having a heat dissipating hole formed therein,
And the air between the radiating fins is discharged through the heat dissipating holes.

The method according to claim 1,
Further comprising a converter housing located in the center of the plurality of radiating fins and having a power supply for supplying power to the light emitting element therein and having a first inclined wall inclined upward toward the outside,
And an inner end of the first inclined wall is located outside the center of the central inflow hole.

The method of claim 3,
The heat-
An inner plate located below the converter housing; And
And an outer plate extending from the inner plate and positioned outside the converter housing,
And the air introduced through the central inflow hole is able to move along the bottom surface of the first inclined wall.

5. The method of claim 4,
Wherein a plurality of pinholes are formed through the inner plate and the outer plate, respectively.

The method of claim 3,
The main body includes:
A central connector coupled to the bottom of the converter housing;
A peripheral coupler surrounding the central coupler, spaced apart from the central coupler and closely coupled to the substrate; And
And a connection body connecting the center assembly and the peripheral assembly so that at least one or more communication holes communicating with the central inlet hole are provided between the center assembly and the peripheral assembly.

The method according to claim 6,
A second inclined wall inclined upward toward the outer side is formed on the bottom surface of the central coupling body,
And the outer end of the second inclined wall is located or coincides with the inner end of the first inclined wall.

The method according to claim 6,
Wherein the lens cover is formed with a cover connection arm protruding toward the center of the central inflow hole and coupled with the center combination.

9. The method according to any one of claims 1 to 8,
And a second peripheral inflow hole communicating with the first peripheral inflow hole, wherein the second peripheral inflow hole is in contact with the bottom surface of the lower cover, and a skirt extending in a downward direction from the outer end of the tight contact portion, And a shade including a light-shielding portion.

10. The method of claim 9,
Wherein each of the lower cover and the close contact portion is inclined downward toward the inside at a portion where the first peripheral inflow hole and the second peripheral inflow hole are formed.