KR101512670B1 - Lighting device - Google Patents

Abstract

Disclosed is a light emitting device having improved workability in assembling. The light emitting device includes a main board and a light emitting module. The main board includes connection terminals for externally outputting a driving signal for generating light, and first and second insertion portions spaced apart from each other. The light emitting module includes a connection pin which is coupled to the connection terminal and receives a driving signal from the main board, a first guide protrusion inserted into the first insertion portion, and a second guide protrusion inserted into the second insertion portion, Guide projections. As described above, since the cross sections of the first and second guide projections have different shapes, the workability in assembling the light emitting device can be further improved.

The first and second guide projections

Description

[0001] LIGHTING DEVICE [0002]

The present invention relates to a light emitting device, and more particularly, to a light emitting device that generates light using a light emitting diode.

As a light source for generating light, a light emitting diode (LED) has many advantages such as high luminous efficiency, long life, low power consumption, and environment friendliness. As a result, the technical field of using the light emitting diode is continuously increasing.

Generally, the light emitting device includes a light emitting module including the light emitting diode and generating light, and a main board electrically coupled to the light emitting module to control light emission of the light emitting module.

The main board includes a plurality of pin sockets for externally outputting a driving signal for controlling the light emitting module. The light emitting module includes a plurality of connection pins coupled to the pin sockets to receive the driving signals. do.

On the other hand, the light emitting module generally has a rectangular shape in a plan view. In addition, in order for the light emitting module to be stably and balancedly coupled when electrically coupled to the main board, the pin sockets should be disposed at symmetrical positions within the rectangle.

However, when the pin sockets are disposed at positions symmetrical to each other, an operator can insert the connection pins into the pin socket at the wrong position, and in some cases, the connection pins may be broken. Since the pin sockets are disposed at symmetrical positions with respect to each other, when the light emitting module is coupled to the main board, the workability of the operator may be deteriorated.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a light emitting device capable of improving workability of an operator when coupling a light emitting module to a main board.

A light emitting device according to an embodiment of the present invention includes a main board and a light emitting module.

The main board includes a connection terminal for outputting a driving signal for generating light to the outside, and first and second inserting parts spaced apart from each other. Wherein the light emitting module includes a connection pin coupled to the connection terminal to receive the driving signal from the main board, a first guide protrusion inserted into the first insertion portion, and a second guide protrusion inserted into the second insertion portion, And includes a second guide projection different from the first guide projection.

Wherein the first insertion portion is formed in the main board and is a first insertion groove for receiving the first guide projection, and the second insertion portion is formed in the main board and includes a second insertion groove for receiving the second guide projection, . Alternatively, the first inserting portion may protrude toward the light emitting module and may include a first inserting groove for receiving the first guide protrusion, the second inserting portion may protrude toward the light emitting module, And a second insertion groove for receiving the second guide projection.

The planar shape of the first insertion groove may be substantially the same as the end face of the first guide projection and the planar shape of the second insertion groove may be substantially the same as the cross section of the second guide projection. Here, the cross section of the first guide projection may have a polygonal shape, and the cross section of the second guide projection may have a circular shape. The cross-sectional area of the first guide protrusion may be different from the cross-sectional area of the second guide protrusion.

The first and second guide protrusions may be formed on both side edges of the light emitting module that are symmetrical with respect to each other. The light emitting module may have a substantially rectangular plane, and the first and second guide projections may be formed adjacent to both side edges of the rectangle facing each other diagonally.

Wherein the connection pins include first and second driving pins arranged to correspond to the first and second guide protrusions at positions symmetrical to each other, and the connection terminal is connected to the first and second driving pins And may include first and second coupling terminals that are respectively disposed at corresponding positions and that respectively couple with the first and second driving pins.

The connection terminal may include a through hole formed in the main board to receive the connection pin, and the connection pin may be inserted into the through hole and electrically connected to the connection terminal by soldering. The connection terminal may include a pin socket that receives the connection pin and is electrically connected to the connection pin.

The light emitting module includes a connection pin, a light emitting board for generating light by the driving signal, and a cover mold coupled to the light emitting board to cover the light emitting board, . ≪ / RTI >

A light emitting device according to another embodiment of the present invention includes a main board and a light emitting module.

The main board includes a connection terminal for outputting a driving signal for generating light to the outside, and first and second inserting parts spaced apart from each other. Wherein the light emitting module includes a connection pin coupled to the connection terminal and adapted to receive the driving signal from the main board, a first guide protrusion inserted into the first insertion portion, and a second guide protrusion inserted into the second insertion portion, And a second guide protrusion different from the guide protrusion.

Wherein the first insertion portion is formed in the main board and is a first insertion groove for receiving the first guide projection, and the second insertion portion is formed in the main board and includes a second insertion groove for receiving the second guide projection, .

The connection terminal may include a through hole formed in the main board to receive the connection pin, the connection pin may be inserted into the through hole, and may be electrically connected to the connection terminal by soldering.

According to the light emitting device of the present invention, since the first and second guide projections having different shapes or sizes are inserted into the first and second insertion portions of the main board, So that the connection pin can be quickly coupled to the connection terminal at the correct position. As a result, workability in joining the light emitting module to the main board can be further improved.

Also, since the connection pin is prevented from being inserted into the connection terminal at the wrong position, it is possible to prevent the connection pin from being bent or broken.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "comprising ", etc. are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

≪ Example 1 >

2 is a cross-sectional view taken along the line I-I 'of FIG. 1, and FIG. 3 is a cross-sectional view taken along the line I-I' of FIG. Fig.

1, 2 and 3, the light emitting device according to the present embodiment includes a light emitting module LM for generating light and a light emitting module LM electrically connected to the light emitting module LM to control the light emitting module LM The main board 100 includes a main board 100 and a main board 100.

The main board 100 includes a main board 110, a driving device 120, a connection terminal 130, and a coupling unit. Here, the coupling portion includes a first insertion portion 140 and a second insertion portion 150.

The main substrate 110 has wirings (not shown) electrically connected to the driving elements 120. For example, the main board 110 may be a printed circuit board. Meanwhile, the main substrate 110 may have a substantially rectangular shape in plan view.

The driving device 120 is disposed on the upper surface of the main substrate 110 and is electrically connected to the wirings. The driving element 120 generates a driving signal for controlling driving of the light emitting module LM.

The connection terminal 130 is disposed on the upper surface of the main substrate 110 and is electrically connected to the driving element 120. The connection terminal 130 receives the driving signal from the driving element 120 and outputs the driving signal to the outside.

The connection terminal 130 may include first and second coupling terminals 132 and 134 spaced apart from each other. Here, the first and second coupling terminals 132 and 134 may be disposed at positions symmetrical to each other on the upper surface of the main substrate 110 having a rectangular shape.

In this embodiment, the connection terminal 130 is a pin socket that can be coupled with a connection pin 230 to be described later. Specifically, the first coupling terminal 132 is a first socket portion having at least one first pin groove H1, and the second coupling terminal 134 is a first socket portion having at least one second pin groove H2, 2 socket. Hereinafter, the pin socket and the first and second socket portions will be denoted by the same reference numerals as the connection terminal 130 and the first and second coupling terminals 132 and 134.

The coupling portion is disposed on the upper surface of the main substrate 110 and has an insertion groove for coupling with the light emitting module LM. Specifically, the first insertion portion 140 has a first insertion groove 142, and the second insertion portion 150 has a second insertion groove 152. Here, the first and second inserting portions 140 and 150 may be disposed at positions symmetrical to each other on the diagonal line of the upper surface of the main substrate 110 having a rectangular shape.

The first and second inserting parts 140 and 150 may be disposed at positions corresponding to the first and second socket parts 132 and 134, respectively. The first and second inserting parts 140 and 150 may be disposed further from the center of the upper surface of the main board 110 than the first and second socket parts 132 and 134.

The light emitting module LM is electrically connected to the main board 100 to generate light. Specifically, the light emitting module LM may include a light emitting board 200, a cover mold 300, a molding unit 400, and an optical plate 500. Here, the light emitting module (LM) may not include the molding part 400 and the optical plate 500 as the case may be.

The light emitting board 200 is disposed on the main board 100 and is electrically connected to the main board 100 through the pin socket 130. The driving board 200 is electrically connected to the main board 100 through the pin socket 130, And receives light to generate light. For example, the light emitting board 200 may include a driving substrate 210, at least one light emitting chip 220, and at least one connecting pin 230.

The driving board 210 is disposed on the main board 100. The driving substrate 210 may be, for example, a printed circuit board having a plurality of wirings. The driving substrate 210 may have a substantially rectangular shape in plan view. The lower surface of the driving substrate 210 is a surface facing the main board 100 and the upper surface of the driving substrate 210 is opposite to the lower surface of the driving substrate 210.

The light emitting chip 220 is disposed on the upper surface of the driving substrate 210 and generates light by receiving the driving signal from the driving substrate 210. The light emitting chip 220 may include at least one light emitting diode (LED) for generating point light. For example, the light emitting chip 220 may include at least one of a red light emitting diode, a green light emitting diode, and a blue light emitting diode, or may include a white light emitting diode. Alternatively, the light emitting chip 220 may include an organic light emitting diode (OLED).

The connection pin 230 is disposed on the lower surface of the driving substrate 210 and is coupled to the pin socket 130. The connection pin 230 receives the driving signal from the pin socket 130, Lt; / RTI > The connection pin 230 may include at least one first driving pin 232 inserted into and coupled to the first pin groove H1 of the first socket portion 132, And at least one second driving pin 234 which is inserted and coupled to the second pin groove H2 of the first driving pin.

The first and second driving pins 232 and 234 may be disposed at positions symmetrical to each other in the diagonal direction of the lower surface of the driving substrate 210 having a rectangular shape. For example, the first and second driving pins 232 and 234 may be disposed at opposite corner portions diagonally opposite to each other in a lower surface of the driving substrate 210.

The cover mold 300 may be disposed on the driving substrate 210 to cover the upper surface of the driving substrate 210 and may be fixedly coupled with the driving substrate 210. Specifically, the cover mold 300 may include a mold cover portion 310, a mold side wall portion 320, and a guide protrusion portion. Here, the guide protrusions include first and second guide projections 330 and 340 spaced from each other.

The mold cover unit 310 is disposed on the driving substrate 210 to cover the upper surface of the driving substrate 210. The mold cover 310 may be formed in the light emission groove 312 to expose the light emitting chip 220 to the outside. That is, the mold cover part 310 may cover the entire remaining area of the upper surface of the driving substrate 210 except the area where the light emitting chip 220 is disposed. Meanwhile, the mold cover 310 may have a substantially rectangular shape when viewed in plan, like the driving substrate 210.

The mold side wall portion 320 is formed along the edge of the lower surface of the mold cover portion 310 facing the driving substrate 210. As a result, the mold cover part 310 and the mold side wall part 320 may form a storage space for accommodating the light emitting board 200.

The guide protrusion may be formed on the lower surface of the mold cover part 310 and inserted into the insertion groove of the coupling part to guide the coupling between the light emitting module LM and the main board 100. Specifically, the first guide protrusion 330 is disposed at a position corresponding to the first insertion portion 140 and inserted into the first insertion groove 142, and the second guide protrusion 340 is inserted into the first insertion groove 142, 2 insertion portion 150 and is inserted into the second insertion groove 152. As shown in FIG.

The first and second guide protrusions 330 and 340 may be formed on both sides of the bottom surface of the mold cover 310 which are symmetrical to each other. For example, the first and second guide protrusions 330 and 340 may be formed adjacent to both edges of the lower surface of the mold cover 310 having a rectangular shape, which are symmetrical with respect to each other in a diagonal direction . The first and second guide protrusions 330 and 340 may be disposed at positions corresponding to the first and second drive pins 232 and 234, respectively.

In this embodiment, the first and second guide protrusions 330 and 340 have different cross-sectional shapes. For example, the first guide protrusion 330 may have a polygonal cross section, and the second guide protrusion 340 may have a circular cross section. 1 and 3, the first guide protrusion 330 has a rectangular cross section. Alternatively, the first guide protrusion 330 may have a shape such as a triangle, a pentagon, a hexagon, or the like.

The first insertion groove 142 of the first insertion portion 140 has a substantially planar shape that is substantially the same as that of the first guide projection 330 and the second insertion portion 142 of the second insertion portion 150 The planar shape of the insertion groove 152 is preferably substantially the same as the cross-section of the second guide projection. For example, the first insertion groove 142 has a polygonal shape substantially the same as the cross-section of the first guide projection 330, and the second insertion groove 152 has a substantially rectangular cross- And has a circular shape substantially equal to the cross section.

The molding part 400 may be interposed between the light emitting board 200 and the cover mold 300 to cover one surface of the driving substrate 210. The molding part 400 can completely mold the space between the light emitting board 200 and the cover mold 300 so that the cover mold 300 and the light emitting board 200 are coupled to each other. .

The optical plate 500 is disposed on the cover mold 300 to improve the quality of light emitted from the light emitting board 200. For example, the optical plate 500 may include a diffuser plate for diffusing light emitted from the light emitting chip 220 and emitted through the light output groove 312 of the mold cover unit 310.

A color filter pattern (not shown) for embodying various colors or a display pattern (not shown) for embodying letters or shapes may be formed on the upper surface or the lower surface of the optical plate 500.

4 is a plan view showing a bottom surface of the light emitting module further including the third and fourth guide protrusions in FIG.

Referring to FIGS. 2 and 4, the cover mold 300 may further include third and fourth guide molds 350 and 360 formed on the lower surface of the mold cover portion 310.

The third and fourth guide molds 350 and 360 are positioned at positions adjacent to the remaining two corner portions of the lower surface of the mold cover portion 310 where the first and second guide protrusions 330 and 340 are not formed As shown in FIG. Although not shown in the drawings, the engaging portion of the main board 100 is disposed at a position corresponding to the third and fourth guide molds 350 and 360, and the third and fourth guide molds 350 And 360, respectively, as shown in FIG.

At least one of the first, second, third, and fourth guide molds 330, 340, 350, and 360 may have a cross-sectional shape different from that of the remaining guide molds. For example, the first and third guide molds 330 and 350 may have a polygonal cross-section, and the second and third guide molds 340 and 350 may have a circular cross-section.

As described above, according to the present embodiment, when the first and second guide protrusions 330 and 340 formed on the lower surface of the mold cover 310 have different cross-sectional shapes, It is possible to confirm the shape of the cross section of the guide projections 330 and 340 and to fit the first and second insertion grooves 142 and 152 corresponding thereto more easily.

The first driving pin 232 of the light emitting board 200 is electrically connected to the first socket portion 132 by the first and second socket portions 132 and 134, The second driving pin 234 of the light emitting board 200 is coupled to the first socket portion 132 and not to the second socket portion 134 Can be prevented.

Accordingly, the workability of the operator when the light emitting module (LM) is coupled to the main board 100 can be further improved. The first and second drive pins 232 and 234 are inserted into the first and second socket portions 132 and 134 to be inserted into the first and second drive pins 232 and 234, Can be prevented from being bent or broken.

≪ Example 2 >

5 is a plan view showing a bottom surface of a light emitting module of a light emitting device according to a second embodiment of the present invention.

The light emitting device according to this embodiment is substantially the same as the light emitting device according to the first embodiment described with reference to FIGS. 1 to 4 except for the shape and size of the first and second guide protrusions 330 and 340 The detailed description of other components except for the first and second guide protrusions 330 and 340 will be omitted, and the same reference numerals will be used for the same components as those in the first embodiment.

Referring to FIGS. 1, 2 and 5, the first and second guide projections 330 and 340 may have different sizes, that is, different cross-sectional areas. For example, the cross-sectional area of the first guide protrusion 330 may be larger than the cross-sectional area of the second guide protrusion 340. The area of the first insertion groove 142 of the first insertion portion 140 is also equal to the area of the second insertion portion 150 of the second insertion portion 150 in correspondence with the first and second guide projections 330, Is formed larger than the area of the insertion groove (152).

Meanwhile, the first and second guide protrusions 330 and 340 may have the same shape, for example, a circular cross section as shown in FIG. Alternatively, the first and second guide projections 330 and 340 may have different cross-sectional shapes. For example, the first guide protrusion 330 may have a polygonal cross section, and the second guide protrusion 340 may have a circular cross section.

According to the present embodiment, when the first and second guide protrusions 330 and 340 formed on the lower surface of the mold cover 310 have different cross-sectional areas, It is possible to confirm the cross-sectional area of the guide projections 330 and 340 and fit the first and second insertion grooves 142 and 152 corresponding thereto more easily.

As a result, the workability of the operator when the light emitting module (LM) is coupled to the main board 100 can be further improved. The first and second driving pins 232 and 234 are inserted into the first and second socket portions 132 and 134 in a reversed manner so that the first and second driving pins 232 and 234 It can be prevented from being bent or broken.

≪ Example 3 >

6 is a cross-sectional view illustrating a light emitting device according to a third embodiment of the present invention.

The light emitting device according to the present embodiment includes the light emitting device according to the first or second embodiment described with reference to Figs. 1 to 5 except for the connection terminal 130 and the first and second inserting portions 140 and 150 The detailed description of the other components except for the connection terminal 130 and the first and second inserting parts 140 and 150 will be omitted and it is to be noted that the same components as those of the first or second embodiment The same reference numerals will be used for components.

Referring to FIGS. 1 and 6, the connection terminal 130 according to the present embodiment may include first and second coupling terminals 132 and 134 spaced apart from each other. Here, the first and second coupling terminals 132 and 134 may be disposed at positions symmetrical to each other on the upper surface of the main substrate 110 having a rectangular shape.

The connection terminal 130 may include a through hole that can receive the connection pin 230. The connection pin 130 may be formed on the inner wall, the upper side, or the lower side of the through hole, A metal pattern (not shown) may be formed. The connection pin 230 may be inserted into the through hole and may be electrically connected to the metal pattern of the connection terminal 130 by soldering.

Specifically, the first coupling terminal 132 includes a first coupling hole for receiving the first driving pin 232, and the second coupling terminal 134 includes the second driving pin 234 And a second connection hole for receiving the second connection hole.

The first insertion portion 140 may be a first insertion groove formed in the main board 110 to receive the first guide projection 330 and the second insertion portion 150 And may be a second insertion groove formed in the main board 110 to receive the second guide protrusion 340. That is, the first and second guide protrusions 330 and 340 may be received and coupled to the first and second inserting portions 140 and 150, respectively. Alternatively, the first and second inserting portions 140 and 150 may protrude from the upper surface of the main substrate 110, as in the first or second embodiment, And second insertion grooves.

As described above, according to the present embodiment, the connection pin 230 is inserted into the through hole of the connection terminal 130 and is electrically connected to the metal pattern of the connection terminal 130 by soldering, It is possible to prevent the connection failure due to the electrical connection with the connection pin 230.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Accordingly, the foregoing description and drawings are to be regarded in an illustrative rather than a restrictive sense of the invention.

1 is a perspective view showing a light emitting device according to a first embodiment of the present invention.

2 is a cross-sectional view taken along line I-I 'of FIG.

FIG. 3 is a plan view showing a lower portion of the light emitting module of FIG. 2. FIG.

4 is a plan view showing a bottom surface of the light emitting module further including the third and fourth guide protrusions in FIG.

5 is a plan view showing a bottom surface of a light emitting module of a light emitting device according to a second embodiment of the present invention.

6 is a cross-sectional view illustrating a light emitting device according to a third embodiment of the present invention.

<Short description of main drawing number>

100: main board 110: main board

120: driving element 130: connection terminal

132: first coupling terminal 134: second coupling terminal

140: first insertion portion 150: second insertion portion

200: light emitting board 210: driving substrate

220: light emitting chip 230: connection pin

232: first drive pin 234: second drive pin

300: Cover mold 310: Mold cover part

312: light emitting groove 320: mold side wall portion

330: first guide projection 340: second guide projection

400: molding part 500: optical plate

Claims (15)

A main board having a connection terminal for outputting a driving signal for generating light to the outside, and first and second insertion portions spaced apart from each other; And A first guide protrusion inserted into the first insertion portion, and a second guide protrusion inserted into the second insertion portion and having a shape of a cross section of the first guide protrusion and the second guide protrusion, And a second light emitting module having another second guide projection, The first and second guide protrusions are formed on both side edges of the light emitting module, Wherein the connection pins include first and second driving pins arranged to correspond to the first and second guide projections at positions symmetrical to each other, Wherein the connection terminal includes first and second coupling terminals disposed at positions corresponding to the first and second driving pins, respectively, and coupled to the first and second driving pins, respectively. [2] The apparatus of claim 1, wherein the first insertion portion is a first insertion groove formed in the main board to receive the first guide projection, And the second insertion portion is a second insertion groove formed in the main board for receiving the second guide projection. 2. The light emitting module according to claim 1, wherein the first insertion portion is protruded toward the light emitting module and has a first insertion groove for receiving the first guide projection, Wherein the second insertion portion is protruded toward the light emitting module and includes a second insertion groove for receiving the second guide projection. 4. The apparatus according to claim 2 or 3, wherein a plane shape of the first insertion groove is substantially the same as an end surface of the first guide projection, Wherein a planar shape of the second insertion groove is substantially the same as an end face of the second guide projection. The light emitting device according to claim 4, wherein a cross section of the first guide projection has a polygonal shape, and a cross section of the second guide projection has a circular shape. The light emitting device according to claim 4, wherein a cross-sectional area of the first guide protrusion is different from a cross-sectional area of the second guide protrusion. delete The light emitting module according to claim 1, wherein the light emitting module has a substantially rectangular plane, Wherein the first and second guide projections are formed adjacent to opposite side edges of the rectangle facing each other diagonally. delete The connector according to claim 1, wherein the connection terminal includes a through hole formed in the main board to receive the connection pin, Wherein the connection pin is inserted into the through hole and is electrically connected to the connection terminal by soldering. The connector according to claim 1, wherein the connection terminal And a pin socket which receives the connection pin and is electrically connected to the connection pin. The light emitting module according to claim 1, A light emitting board having the connection pin and generating light by the driving signal; And And a cover mold coupled to the light emitting board to cover the light emitting board and including the first and second guide protrusions. A main board having a connection terminal for outputting a driving signal for generating light to the outside, and first and second insertion portions spaced apart from each other; And A first guide protrusion inserted into the first insertion portion and a second guide protrusion inserted into the second insertion portion and having a cross sectional area different from that of the first guide protrusion, 2 guide protrusions, Wherein the connection terminal includes a through hole formed in the main board to receive the connection pin, Wherein the connection pin is inserted into the through hole and is electrically connected to the connection terminal by soldering. [14] The apparatus of claim 13, wherein the first insertion portion is a first insertion groove formed in the main board to receive the first guide projection, And the second insertion portion is a second insertion groove formed in the main board for receiving the second guide projection. delete

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