KR101929258B1 - Lighting device - Google Patents

Abstract

An embodiment relates to a lighting device.
A lighting apparatus according to an embodiment includes: a substrate having a light emitting element and having an electrode pad; A circuit board disposed below the substrate and having a docking; And a connector electrically connecting the electrode pad and the docking, and physically connected to a portion of the substrate and the docking.

Description

LIGHTING DEVICE

An embodiment relates to a lighting device.

Light emitting diodes (LEDs) are a type of semiconductor devices that convert electrical energy into light. The light emitting diode has advantages of low power consumption, semi-permanent lifetime, fast response speed, safety, and environmental friendliness compared with conventional light sources such as fluorescent lamps and incandescent lamps. 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 .

Korea Patent Publication No. 2010-0135550 (published on December 27, 2010)

The embodiment provides a lighting device capable of separating the light source part and the driving part.

Further, the embodiment provides a lighting device capable of improving heat radiation efficiency.

In addition, the embodiment provides a lighting device capable of electrically connecting the light source unit and the driving unit.

Further, a lighting device capable of improving light efficiency is provided.

Further, the embodiment provides a lighting device which is easy to assemble.

A lighting apparatus according to an embodiment includes: a substrate having a light emitting element and having an electrode pad; A circuit board disposed below the substrate and having a docking; And a connector electrically connecting the electrode pad and the docking, and physically connected to a portion of the substrate and the docking.

An illumination apparatus according to an embodiment includes: a housing having an upper opening and a lower opening; An optical plate disposed in the upper opening; A radiator disposed in the lower opening; A driving unit accommodated in the housing and disposed between the optical plate and the heat discharging body; A light source housed in the housing and disposed between the optical plate and the driving unit; And a connector electrically connecting the driving unit and the light source unit.

Use of the illumination device according to the embodiment has an advantage that the light source unit and the driving unit can be separated.

Further, there is an advantage that the heat radiation efficiency can be improved.

Further, there is an advantage that the light source unit and the driving unit can be electrically connected.

Further, there is an advantage that the light efficiency can be improved.

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

1 is a perspective view of a lighting apparatus according to an embodiment viewed from above;
2 is a perspective view of the lighting device shown in Fig. 1 as viewed from below.
3 is an exploded perspective view of the illumination device shown in Fig.
4 is an exploded perspective view of the illumination device shown in Fig.
5 is a cross-sectional view of the illumination device shown in Fig.
6 is an exploded perspective view of the light source unit shown in FIG. 3 and the circuit board of the driving unit, with a connector added.
7 is a perspective view of the connector shown in Fig.
8 is an exploded perspective view of the connector shown in Fig.
FIG. 9 is a perspective view showing a modification of the heat dissipating body shown in FIG. 3,
10 is an exploded perspective view of the heat discharging body shown in Fig.
11 is a sectional view of the heat discharging body shown in Fig.

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

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

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 apparatus shown in Fig. 1, Fig. 3 is an exploded perspective view of the lighting apparatus shown in Fig. 1, and Fig. 4 is an exploded perspective view of the lighting apparatus shown in Fig. 2 is an exploded perspective view of the illumination device shown in Fig. 2, and Fig. 5 is a sectional view of the illumination device shown in Fig.

1 to 5, an illumination apparatus according to an embodiment includes a housing 100, an optical plate 200, a reflector 300, a light source 400, a driver 500, and a heat sink 600 .

The housing 100 houses the optical plate 200, the reflector 300, the light source unit 400, the driving unit 500, and the heat sink 600. The housing 100 constitutes an appearance of a lighting apparatus according to the embodiment.

The housing 100 may be cylindrical. However, the present invention is not limited thereto, and the housing 100 may be polygonal.

The housing 100 is hollow to accommodate the optical plate 200, the reflector 300, the light source unit 400, the driving unit 500, and the heat sink 600. In addition, the housing 100 is in a state in which a portion corresponding to the upper surface and the bottom surface of the cylinder is opened. Therefore, the housing 100 may have two openings. For convenience of explanation, the two openings are named as the upper opening 110a and the lower opening 110b, respectively.

The optical plate 200, the reflector 300, the light source unit 400, the driving unit 500 and the heat discharging unit 600 are sequentially housed in the side of the upper opening 110a through the lower opening 110b of the housing 100, .

The upper opening 110a of the housing 100 is blocked by the optical plate 200. Fig. The optical plate 200 can block the upper opening 110a of the housing 100 by designing the diameter of the upper opening 110a to be smaller than the diameter of the optical plate 200. [

The lower opening 110b of the housing 100 is blocked by the heat discharging body 600. [ The protrusion 620 of the heat discharging body 600 is engaged with the first groove 150 of the housing 100 so that the heat discharging body 600 can close the lower opening 110b of the housing 100. [

The housing 100 may have one or more latching portions 130. Here, the number of the latching portions 130 may correspond to the number of the latching jaws 311 of the reflector 300. [

The engaging portion 130 of the housing 100 can engage with the engaging jaw 311 of the reflector 300. [ Specifically, the latching part 130 may have an insertion groove 131 into which the latching jaw 311 can be inserted. The insertion groove 131 may have a predetermined length in a direction substantially perpendicular to the direction in which the reflector 300 is housed in the housing 100. The reflector 300 and the housing 100 are rotated by the rotation of the retaining jaw 311 along the insertion groove 131 or the direction in which the retaining jaw 311 accommodates the reflector 300 in the housing 100 Can be easily combined without different fastening means.

The housing 100 may have a first groove 150. The first groove 150 can engage with the protrusion 620 of the heat discharging body 600. The number of the first grooves 150 may correspond to the number of the protrusions 620. When the protrusion 620 of the heat discharging body 600 is inserted into the first groove 150 of the housing 100, the heat discharging body 600 closes the lower opening 110b of the housing 100.

The housing 100 may have a second groove 170. The protrusion 530 and the auxiliary stopper 180 of the driving unit 500 may be inserted into the second groove 170.

The auxiliary stopper 180 is inserted into the second groove 170 of the housing 100. The auxiliary stopper 180 closes the remaining portion of the second groove 170 after the protrusion 530 of the driving portion 500 is inserted into the second groove 170 of the housing 100.

The housing 100 may have a key 190. The key 190 indicates the coupling direction and the coupling position of the driving unit 500 and the heat discharging unit 600 when the driving unit 500 and the heat discharging unit 600 are housed through the lower opening 110b of the housing 100 .

The key 190 may have a groove shape extending from the outer surface to the inner surface of the housing 100. Further, the key 190 may have a shape protruding from the inner surface of the housing 100 toward the inner center of the housing 100.

The key 190 may be inserted into the key groove 550 of the driver 500 and inserted into the key groove 630 of the heat sink 600.

The portion of the key 190 that engages with the key groove 550 of the driver 500 and the portion of the key top 630 of the heat sink 600 that engage with the key groove 630 may have different shapes. Specifically, the key 190 may include a first key inserted into the key groove 500 of the driver 500 and a second key inserted into the key groove 630 of the heat sink 600. The first key may be larger in volume than the second key. Therefore, the key groove 500 of the driving part 500 inserted into the first key may be larger than the key groove 630 of the heat sink 600 inserted into the second key.

The optical plate 200 can block the upper opening 110a of the housing 100 by the housing 100 and the reflector 300. [ The optical plate 200 is interposed between the housing 100 and the reflector 300 when the housing 100 and the reflector 300 are coupled to each other so that the optical plate 200 can be disposed inside the housing 100 without separate fastening means. More specifically, when the outer frame 310 of the reflector 300 pushes the optical plate 200 in the direction of the upper opening 110a from the lower opening 110b of the housing 100, (Not shown). This is possible because the diameter of the optical plate 200 is larger than the diameter of the upper opening 110a of the housing 100. [

The inner surface of the optical plate 200 may be coated with a milky white paint. The coating material may include a diffusing agent for diffusing light passing through the optical plate 200.

The material of the optical plate 200 may be glass. However, the optical plate 200 may be made of plastic, polypropylene (PP), polyethylene (PE), or the like, because the glass is weak in weight or external impact. (PC) for light diffusion preferably having good light resistance, heat resistance and impact strength characteristics.

The roughness of the inner surface of the optical plate 200 may be larger than the roughness of the outer surface of the optical plate 200. [ If the roughness of the inner surface of the optical plate 200 is larger than the roughness of the outer surface of the optical plate 200, the light from the light source 400 can be sufficiently scattered and diffused.

The optical plate 200 can excite the light from the light source unit 400. [ The optical plate 200 may have a phosphor to excite light from the light source unit 400. [ The phosphor may include at least one of a garnet system (YAG, TAG), a silicate system, a nitride system, and an oxynitride system. The optical plate 200 includes a phosphor of a yellow series and can convert light from the light source 400 into natural light (white light). However, in order to improve the color rendering index and reduce the color temperature, the green plate- . ≪ / RTI > Here, the addition ratio of the phosphor according to the color may be a green-based phosphor rather than a red-based phosphor, and a yellow-based phosphor rather than a green-based phosphor. YAG, silicate, and oxynitride systems of the garnet system may be used as the yellow phosphor, silicate system and oxynitride system may be used as the green system phosphor, and nitrides may be used as the red system phosphor. have.

The reflector 300 is disposed inside the housing 100. The reflector 300 is accommodated in the inner space of the housing 100 through the lower opening 110b of the housing 100. [

The reflector 300 fixes the optical plate 200 inside the housing 100. To this end, the reflector 300 may have an outer frame 310 and an engagement protrusion 311.

The outer frame part 310 is formed along the outer periphery of the reflection part 330, and the outer frame part of the optical plate 200 is disposed thereon. The latching jaw 311 may protrude or extend outward from the outer frame 310. Here, the latching jaw 311 may protrude or extend in a direction substantially perpendicular to the housing direction in which the reflector 300 is housed in the housing 100. The latching jaw 311 can be inserted into the groove 131 of the latching portion 130 of the housing 100.

An example of fixing the optical plate 200 to the inside of the housing 100 will be described with reference to an example in which the reflector 300 is disposed on the outer frame 310 of the reflector 300, And the engaging protrusion 311 of the reflector 300 is engaged with the engaging portion 130 of the housing 100. [

The reflector 300 may reflect the light from the light source unit 400 to the optical plate 200. The reflector 300 may have a reflecting portion 330.

The reflector 330 may have an inclined surface having a predetermined slope with respect to the optical plate 200 or the substrate 410 of the light source 400.

The reflector 330 may include a first reflector 330a and a second reflector 330b. The first reflector 330a and the second reflector 330b may have a funnel shape.

The first reflector 330a and the second reflector 330b are connected, and each has an inclined surface. 5, the angle A between the upper surface of the substrate 410 of the light source unit 400 and the inclined surface of the first reflective portion 330a is smaller than the angle A between the upper surface of the substrate 410 and the upper surface of the second reflective portion 330a, (B) between the inclined planes of the first and second projections 330b.

The first reflector 330a may reflect the light reflected from the inner surface of the optical plate 200 back to the optical plate 200 again.

The reflector 300 may be disposed on the substrate 410 of the light source unit 400 and may be coupled to the substrate 410. To this end, the reflector 300 may have a protrusion 350 that is inserted into the hole 411 of the substrate 410. The protrusion 350 may be connected to the second reflector 330b of the reflector 300. FIG. Here, the number of protrusions 350 may correspond to the number of holes 411 of the substrate 410.

Referring to the drawing, three protrusions 350 are spaced apart at regular intervals and disposed in the second reflector 330b. The three protrusions 350 are disposed so as to form an equilateral triangle. Here, the three protrusions 350 may not be disposed apart at regular intervals. For example, three protrusions 350 may be arranged to draw an isosceles triangle. When the substrate 410 is disposed on the second reflector 330b such that the intervals between the three protrusions 350 are different from each other, the joining direction and the joining position of the substrate 410 can be easily Can be identified.

The reflector 300 may have a support portion 370. The supporting portion 370 supports the reflecting portion 330 on the heat discharging body 600. One end of the supporting portion 370 is connected to the heat discharging body 600 and the other end is connected to the reflecting portion 330. The supports 370 may be at least two. Although three support members 370 are shown in the drawing, more support members can be disposed.

The supporting portion 370 is connected to the heat discharging body 600. The coupling between the supporting portion 370 and the heat discharging body 600 is possible through the bolt B. [ The supporting portion 370 has a groove 375 into which the bolt B is inserted and the heat discharging body 600 also has a hole 650 through which the bolt B passes.

The position of the driving unit 500 can be fixed by the coupling of the supporting unit 370 and the heat discharging unit 600. This is because the supporting portion 370 penetrates the through hole 570 of the circuit board 510 of the driving unit 500 and is coupled with the heat discharging body 600.

The light source unit 400 emits light. The light source 400 may be disposed on the heat sink 600 and may be coupled to the reflector 300. 6 will be described together.

The light source unit 400 may include a substrate 410 and a light emitting device 430 disposed on the substrate 410.

The substrate 410 has a rectangular plate shape, but is not limited thereto and may have various shapes. For example, it may be a circular or polygonal plate shape. The substrate 410 may be a circuit pattern printed on an insulator. For example, the substrate 410 may be a printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB . ≪ / RTI > In addition, a COB (Chips On Board) type that can directly bond an unpackaged LED chip on a printed circuit board can be used. In addition, the substrate 410 may be formed of a material that efficiently reflects light, or may be formed of a color whose surface efficiently reflects light, for example, white, silver, or the like.

The substrate 410 is disposed between the heat discharging body 600 and the reflector 300. Specifically, the substrate 410 is disposed on the heat discharging body 600, and the reflector 300 is disposed on the substrate 410. Here, the protrusion 350 of the reflector 300 shown in FIG. 5 is inserted into the hole 411 of the substrate 410 shown in FIG. 6, so that the substrate 410 and the reflector 300 can be coupled to each other, The joining direction and the joining position of the substrate 410 to the substrate 300 can be identified.

The substrate 410 is electrically connected to the driving unit 500. However, the substrate 410 and the driving unit 500 are physically separated. That is, the substrate 410 and the driving unit 500 are spaced apart from each other. The circuit board 510 of the driving unit 500 is disposed on the base portion 610 of the heat discharging body 600. The circuit board 510 of the driving unit 500 is disposed on the base portion 610 of the heat discharging body 600. [ When the light source unit 400 and the driving unit 500 are physically or spatially separated from each other, the heat from the driving unit 500 is not directly transmitted to the light source unit 400, There is an advantage that the circuit components of the driving unit 500 can be protected by not being directly transmitted to the driving unit 500. In addition, since the driving unit 500 and the light source unit 400 are disposed independently of each other, there is an advantage that maintenance and repair are easy.

The substrate 410 is electrically connected to the circuit board 510 of the driving unit 500. The substrate 410 and the circuit board 510 may be connected through a wire. In addition, the substrate 410 and the circuit board 510 can be electrically connected through a connector without using wires. The connector 500 will be described in detail with reference to the accompanying drawings after describing the driving unit 500. FIG.

A plurality of light emitting devices 430 are disposed on one surface of the substrate 410.

The light emitting device 430 may be a light emitting diode chip that emits red, green, or blue light, or a light emitting diode chip that emits UV light. Here, the light emitting diode may be a lateral type or a vertical type, and the light emitting diode may emit blue, red, yellow, or green. .

The light emitting element 430 may have a phosphor. The phosphor may include at least one of a garnet (YAG, TAG), a silicate, a nitride, and an oxynitride when the light emitting diode is a blue light emitting diode can do.

The driving unit 500 receives power from the outside and converts the supplied power to the light source unit 400. Then, the converted power is supplied to the light source unit 400.

The driving unit 500 may be housed in the housing 100 and disposed on the base unit 610 of the heat discharging body 600.

The driving unit 500 may include a circuit board 510 and a plurality of components 520 mounted on the circuit board 510. The plurality of components 520 may include, for example, a DC converter that converts an AC power supplied from an external power source to a DC power source, a driving chip that controls driving of the light source unit 400, an ESD An electrostatic discharge protection device, and the like.

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

The circuit board 510 may have a stencil 530. The stone publication 530 may have a shape protruding or extending outwardly from the circuit board 510. Unlike the circuit board 510, the stone plate 530 is disposed outside the housing 100, and is supplied with power from the outside.

The stone plate 530 is inserted into the second groove 170 of the housing 100 and can be fixed to the housing 100 by the auxiliary stopper 180.

The stone plate 530 may have a plurality of electrode pads 531. External power is supplied through the electrode pad 531. [ The electrode pad 531 is electrically connected to the circuit board 530 and supplies power to the circuit board 530.

The circuit board 510 may have a keyway 550. A key 190 of the housing 100 is inserted into the key groove 550. The coupling direction and the coupling position of the circuit board 510 can be determined by the key groove 550.

The circuit board 510 may have an insertion hole 560. The insertion hole 560 may be disposed at the center of the circuit board 510. The projecting portion 670 of the heat sink 600 is inserted into the insertion hole 560. The protruding portion 670 of the heat discharging body 600 is arranged to penetrate through the insertion hole 560 so that the light source unit 400 and the driving unit 500 can be space or physically separated from each other.

The circuit board 510 may have a through hole 570. The supporting portion 370 of the reflector 300 penetrates through the through hole 570. The through hole 570 allows the circuit board 510 to be disposed between the reflector 300 and the heat discharger 600.

The circuit board 510 is electrically connected to the substrate 410 of the light source unit 400. The circuit board 510 and the substrate 410 may be connected through a common wire. In addition, the circuit board 510 and the board 410 can be electrically connected through a connector without using wires. The connector will be described with reference to Figs. 6 to 8. Fig.

FIG. 6 is an exploded perspective view of the light source unit shown in FIG. 3 and the circuit board of the driving unit, and FIG. 7 is a perspective view of the connector shown in FIG. 6, and FIG. 8 is an exploded perspective view of the connector shown in FIG.

The connector 700 electrically connects the circuit board 510 and the substrate 410. The connector 700 fixes the light source unit 400 on the driving unit 500 and allows the light source unit 400 and the driving unit 500 to easily identify the coupling position and the coupling direction.

The connector 700 may include an insulating body 710 and a conductor portion 730.

The insulating body 710 has a receiving groove 715 for receiving the conductor portion 730. Specifically, the receiving groove 715 may have a first receiving groove 715a for receiving the first conductor portion 730a and a second receiving groove 715b for receiving the second conductor portion 730b . The first receiving groove 715a and the second receiving groove 715b are not connected to each other but are formed to be spaced apart from each other. This is to electrically insulate the first conductor portion 730a and the second conductor portion 730b.

The insulating body 710 has an insertion groove 711 into which a portion (or edge) of the substrate 410 is inserted. Here, the direction of the receiving groove 715 and the direction of the insertion groove 711 may be substantially perpendicular. The receiving groove 715 and the insertion groove 711 may be partially crossed with each other. The depth of the insertion groove 711 is shallower than the depth of the receiving groove 715. By inserting the substrate 410 into the insertion groove 711, the substrate 410 can be fixed on the circuit board 510.

The lower end of the insulating body 710 is physically inserted into the docking 590 of the circuit board 510. Thus, the substrate 410 and the circuit board 510 can be fixed, and the substrate 410 can be spaced on the circuit board 510. The substrate 410 may be secured within the housing 100 by an insulating body 710 and a protrusion 350 of the reflector 300.

The conductor portion 730 is received in the receiving groove 715 of the insulating body 710. The conductor portion 730 includes a first conductor portion 730a disposed on the bottom surface of the first receiving groove 715a and a second conductor portion 730b disposed on the bottom surface of the second receiving groove 715b Lt; / RTI > The first conductor portion 730a and the second conductor portion 730b are electrically and physically insulated by the first receiving groove 715a and the second receiving groove 715b which are spaced apart from each other.

The first conductor portion 730a has a first contact portion 730a-1 that contacts the electrode pad 413 of the substrate 410 and presses the substrate 410. [ The first contact portion 730a-1 has a predetermined elasticity. When the edge of the substrate 410 is inserted into the inserting groove 711 of the insulating body 710 and the electrode pad 413 of the substrate 410 is pressed, the first contact portion 730a- Lt; / RTI >

The first conductor portion 730a has a second contact portion 730a-3 that is electrically connected to the docking 590 of the circuit board 510. The second contact portion 730a-3 is coupled with the docking 590 so that the circuit board 510 and the first conductor portion 730a can be electrically connected.

Since the second conductor portion 730b is the same as the first conductor portion 730a, the description of the second conductor portion 730b is replaced with the description of the first conductor portion 730a described above.

The heat discharging body 600 will be described with reference to Figs. 1 to 5 again.

The heat discharging body 600 dissipates heat from the light source unit 400 and the driving unit 500.

The heat discharging body 600 may have a base portion 610 and a protruding portion 670.

The base portion 610 may have a circular plate shape having a predetermined thickness and may have a first surface on which the circuit board 510 is disposed. The protrusion 670 may have a shape protruding or extending upward from the center of the base portion 610 and may have a second surface on which the substrate 410 is disposed.

Here, the first surface and the second surface have predetermined steps. The first side is located on the second side. Due to the step difference between the first surface and the second surface, the substrate 410 and the circuit board 510 can be spatially separated.

The circuit board 510 of the driving part 500 is disposed on the base part 610 and the substrate 410 of the light source part 400 is disposed on the projecting part 670. The projection 670 passes through the insertion hole 560 of the circuit board 510. The light source unit 400 and the driving unit 500 are physically or spatially separated from each other by the base unit 610 and the protrusion unit 670. The light source unit 400 may be disposed on the driving unit 500 within the housing 100 by the base unit 610 and the protrusion unit 670.

The protrusion 670 may be integral with the base portion 610. That is, the protruding portion 670 and the base portion 610 may be manufactured by diecasting, and the protruding portion 670 and the base portion 610 may be made of one object.

In addition, the protruding portion 670 and the base portion 610 can be coupled to each other in a configuration independent of each other. More specifically, the description will be made with reference to Figs. 9 to 11. Fig.

FIG. 9 is a perspective view showing a modification of the heat dissipating body shown in FIG. 3, FIG. 10 is an exploded perspective view of the heat dissipating body shown in FIG. 9, and FIG. 11 is a sectional view of the heat dissipating body shown in FIG.

9 to 11 may include a base portion 610 'and a protruding portion 670'. Here, the heat discharging body 600 'may include other configurations of the heat discharging body 600 shown in FIGS.

The base portion 610 'is substantially the same as the base portion 610 shown in Figs. 3 and 4.

The base portion 610 'has a hole 615' that engages with the projection 670 '. The hole 615 'may be formed at the center portion of the base portion 610'. Specifically, the engaging portion 675 'of the projection 670' is engaged with the hole 615 '. The hole 615 'and the engaging portion 675' can be coupled in a forced fit manner.

The protrusion 670 'engages with the base portion 610'. Specifically, the protrusion 670 'is inserted into the hole 615' of the base portion 610 '. The protrusion 670 'may include a disposition portion 671', a locking portion 673 ', and a coupling portion 675'.

The engaging portion 675 'is inserted into the hole 615' of the base portion 610 '. Here, the engaging portion 675 'does not cover the entire hole 615' of the base portion 610 ', but only a portion thereof can be filled.

The engaging portion 673 'may have a shape protruding outward from the side surface of the positioning portion 671'. The engaging portion 673 'prevents the protrusion 670' from penetrating the hole 615 'of the base portion 610' when the protrusion 670 'is engaged with the base portion 610'. Further, the engaging portion 673 'is in contact with the upper surface (second surface) of the base portion 610. Therefore, since the contact area between the protrusion 670 'and the base 610' is increased, the heat radiation performance can be improved.

The arrangement portion 671 'has a top surface (first surface) on which the light source unit 400 shown in FIGS. 3 and 4 is disposed, and a side surface on which the engagement portion 673' protrudes.

The base portion 610 'and the protruding portion 670' shown in Figs. 9 to 11 may be processed by a press to be combined with each other. Here, the protrusion 670 'can be coupled to the hole 615' of the base portion 610 'in an interference fit manner.

The heat dissipating body 600 'shown in Figs. 9 to 11 is processed through a press, and due to an increase in the contact area between the engaging portion 673' and the base portion 610 ' The heat dissipating property is better than that of the heat dissipating body 600.

Referring again to FIGS. 1 to 5, the heat discharging body 600 may have a protruding protrusion 620. The protruding jaw 620 may protrude outward from the outer periphery of the base portion 610. Here, the protrusion 620 may protrude in a direction substantially perpendicular to the direction in which the heat discharging body 600 is housed in the housing 100. The protruding jaw 620 is inserted into the first groove 150 of the housing 100. The protrusion 620 is inserted into the first groove 150 so that the heat discharging body 600 is not inserted into the housing 100 but blocks the lower opening 110b of the housing 100. [

The heat discharging body 600 may have a key groove 630. The key groove 630 may be a groove formed in the direction of the protrusion 670 from the outer periphery of the base portion 610. A key 190 of the housing 100 is inserted into the key groove 630. The coupling direction and the coupling position of the heat discharging body 600 can be easily distinguished by the key groove 630. [

The heat discharging body 600 may have a hole 650 through which the bolt B passes. The holes 650 are arranged to correspond to the supports 370 of the reflector 300.

The heat dissipating unit 600 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 600 may include at least one of aluminum (Al), nickel (Ni), copper (Cu), silver (Ag), and tin (Sn).

The heat discharging body 600 may have a heat radiating pad 690. The heat radiating pad 690 may be disposed between the base portion 610 of the heat discharging body 600 and the circuit board 510 of the driving portion 500. The heat radiating pad 690 may be disposed at a portion of the base portion 610. The heat radiating pad 690 has a predetermined thickness and can rapidly transmit heat from the circuit board 510 of the driving unit 500 to the base unit 610. Here, the heat-radiating pad 690 may be disposed only on a specific portion of the circuit board 510, which may be a heat-radiating component among the plurality of components 520 disposed on the circuit board 510, for example, It can be placed only under the transformer.

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

100: Housing
200: Optical plate
300: reflector
400: light source part
500:
600: heat sink

Claims (17)

A housing including an outer surface and an inner surface, the housing having grooves extending in the inner surface direction from the outer surface, the housing having an upper opening and a lower opening, and a first groove and a second groove;
A base portion coupled to a lower opening of the housing;
A protrusion protruding upward from a central portion of the upper surface of the base portion;
A substrate disposed within the housing, the substrate including an upper surface on which a plurality of light emitting elements are arranged, the substrate disposed on the projection;
An auxiliary plug coupled to the second groove;
A circuit board disposed under the substrate and electrically connected to the substrate; And
An optical plate disposed at an upper opening of the housing;
/ RTI >
The base portion includes a protruding jaw that engages with the first groove,
Wherein a portion of the substrate comprises an electrode pad,
Wherein the circuit board comprises a docking,
And a connector electrically connecting the electrode pad to the docking and physically connected to a portion of the substrate and the docking,
The connector may include: a conductor unit electrically connecting the substrate and the circuit board; And an insulating body coupled to the docking and having a receiving groove for receiving the conductor portion and an insertion groove into which a portion of the substrate is inserted,
A conductor portion of the connector includes a first contact portion that contacts the electrode pad and presses a portion of the substrate; And a second contact portion electrically connected to the docking,
The insertion groove intersects with the storage groove, the insertion groove is shallower than the storage groove,
Wherein the substrate has a hole disposed centrally, and the protrusion is coupled to the hole.
The method according to claim 1,
Further comprising at least one inclined portion disposed inside the housing and disposed on the substrate and forming an obtuse angle with an upper surface of the substrate.
3. The method of claim 2,
And a reflector including the inclined portion,
And the reflector includes a support portion that supports the inclined portion on the base portion and engages with the base portion.
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