KR20160107046A - Light emitting module - Google Patents

Abstract

An embodiment of the present invention provides a light emitting module which comprises: a rectifying unit for outputting inputted alternating current voltage into ripple voltage; a light emitting package including a plurality of light emitting groups for sequentially emitting the ripple voltage according to a level; and a driving unit for detecting the level of the ripple voltage, and forming a current path for the light emitting groups to sequentially emit light.

Description

A light emitting module

An embodiment relates to a light emitting module.

Light emitting diodes (LEDs) are a kind of semiconductor devices that convert the electricity into infrared rays or light by using the characteristics of compound semiconductors, exchange signals, or use as a light source.

III-V nitride semiconductors (group III-V nitride semiconductors) are attracting attention as a core material for light emitting devices such as light emitting diodes (LEDs) and laser diodes (LDs) due to their physical and chemical properties.

Since such a light emitting diode does not contain environmentally harmful substances such as mercury (Hg) used in conventional lighting devices such as incandescent lamps and fluorescent lamps, it has excellent environmental friendliness, and has advantages such as long life and low power consumption characteristics. .

Generally, the light emitting module includes a light emitting device package, and the light emitting device package includes a light emitting device such as an LED, and the light emitting device is driven by a driving unit, that is, an integrated circuit (IC).

2. Description of the Related Art Recently, a plurality of light emitting devices having different driving voltage levels are disposed in a light emitting device package, and studies are underway to cause a plurality of light emitting devices to emit light in accordance with the level of AC voltage or pulsating voltage.

It is an object of the present invention to provide a light emitting module in which a plurality of light emitting elements can emit light sequentially in accordance with the level of an input voltage.

A light emitting module according to an exemplary embodiment includes a rectifier for outputting a ripple voltage rectified by an input AC voltage, a light emitting device package including a plurality of light emitting groups for sequentially emitting light according to a level of the ripple voltage, And a driving unit for detecting a level and forming a current path such that the plurality of light emitting groups sequentially emit light.

The light emitting module according to the embodiment increases the light efficiency by forming a current path so that light is emitted from at least one of the plurality of light emitting groups in accordance with the level of the pulsating voltage inputted to each of the plurality of light emitting groups having different reference levels There is an advantage to be able to.

In addition, since the light emitting module according to the embodiment can use the light emitting device package including a plurality of light emitting groups that emit light according to the level of the pulsating voltage, the use range of the light emitting device package can be expanded .

1 is a top view illustrating a light emitting device package according to an embodiment.
2 is a view illustrating first to fourth electrode patterns included in the light emitting device package shown in FIG.
3 is a control block diagram showing a control configuration of the light emitting module according to the embodiment.
4 is a circuit diagram showing a circuit configuration of the light emitting module shown in Fig.
5 is a waveform diagram showing a ripple voltage according to an embodiment.
6 is a view showing a current path for the operation of the light emitting module according to the embodiment.
7 is an exploded perspective view showing a display device according to an embodiment.
8 is a cross-sectional view showing a display device according to another embodiment.
9 is an exploded perspective view showing a lighting apparatus according to an embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" May be used to readily describe a device or a relationship of components to other devices or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term "below" can include both downward and upward directions. The elements can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

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 and area of each component do not entirely reflect actual size or area.

In the embodiment, the angle and direction mentioned in the process of describing the structure of the light emitting module are based on those shown in the drawings. In the description of the structure of the light emitting device in the specification, reference points and positional relationship with respect to angles are not explicitly referred to, refer to the related drawings.

FIG. 1 is a top view showing a light emitting device package according to an embodiment, and FIG. 2 is a view illustrating first to fourth electrode patterns included in the light emitting device package shown in FIG.

Referring to FIGS. 1 and 2, the light emitting device package 100 may include a body 10 and a plurality of light emitting devices 30.

The body 10 includes a base layer (not shown) made of a metal material, a first insulating layer (not shown) on the base layer, a circuit patterned on the first insulating layer, And a second insulating layer (not shown) exposing a portion of the first through fifth electrode patterns on the copper foil layer.

Here, the plurality of light emitting devices 30 are connected in a series connection manner, and the first to fourth light emitting groups g1 to g4 may be formed to emit light according to the level of the input voltage.

The first electrode pattern is electrically connected to the first region 21a and the first region 21a exposed by the second insulating layer and is electrically connected to the first light emitting device 30 of the first light emitting group g1, And a first line region 21b that is wire-bonded to the first line region 21b.

In the embodiment, the first region 21a and the first line region 21b may be formed integrally with each other, but are not limited thereto.

The second electrode pattern is electrically connected to the second region 22a and the second region 22a exposed by the second insulating layer and is electrically connected to the last light emitting device 30 of the first light emitting group g1. And a second line region 22b that is wire-bonded to the first light emitting device 30 of the second light emitting group g2.

That is, the first and second light emitting groups g1 and g2 may be connected in series with respect to the second line region 22b.

The third electrode pattern is electrically connected to the third region 23a and the third region 23a exposed by the second insulating layer and is electrically connected to the last light emitting device 30 of the second light emitting group g2, And a third line region 23b to be wire-bonded to the first light emitting device 30 of the third light emitting group g3.

That is, the second and third light emitting groups g2 and g3 may be connected in series with respect to the third line region 23b.

The fourth electrode pattern is electrically connected to the fourth region 24a and the fourth region 24a exposed by the second insulation layer and is electrically connected to the last light emitting device 30 and the third light emitting device g2 of the third light emitting group g3. And a fourth line region 24b that is wire-bonded to the first light emitting device 30 of the fourth light emitting group g4.

That is, the third and fourth light emitting groups g3 and g4 may be connected in series with respect to the fourth line region 23b.

The fifth electrode pattern is electrically connected to the fifth region 25a and the fifth region 25a exposed by the second insulating layer and electrically connected to the last light emitting device 30 of the fourth light emitting group g4 and the wire And a fifth line region 25b to be bonded.

The first light emitting device 30 of the first light emitting group g1 is wire-bonded to the first line area 21b and the last light emitting device 30 of the first light emitting group g1 is wire- And is wire-bonded to the line region 22b.

The first light emitting device 30 of the second light emitting group g2 is wire-bonded to the second line area 22b to be electrically connected to the last light emitting device 30 of the first light emitting group g1, The last light emitting element 30 of the second light emitting group g2 is wire-bonded to the third line region 23b.

The first light emitting device 30 of the third light emitting group g3 is wire-bonded to the third line area 23b and is electrically connected to the last light emitting device 30 of the second light emitting group g1 And the last light emitting device 30 of the third light emitting group g3 is wire-bonded to the fourth line region 24b.

Finally, the first light emitting device 30 of the fourth light emitting group g4 is wire-bonded to the fourth line area 24b, and electrically connected to the last light emitting device 30 of the third light emitting group g3 And the last light emitting element 30 of the fourth light emitting group g4 may be wire-bonded to the fifth line region 25b.

In each of the first to fourth light emitting groups g1 to g4, a plurality of light emitting elements 30 are connected in series, and each of the first to fourth light emitting groups g1 to g4, The light emitting device 30 will be described with reference to the first to fifth line regions 21b to 25b.

The body 10 may include a dam 12 surrounding the periphery of the first to fourth light emitting groups g1 to g4 and may be filled with a resin (not shown) have.

A lens (not shown) may be disposed on the dam 12, but the present invention is not limited thereto.

3 is a control block diagram showing a control configuration of the light emitting module according to the embodiment.

Referring to FIG. 3, the light emitting module may include a rectifier 110, a light emitting device package 120, and a driver 130.

The light emitting device package 120 shown in FIG. 3 is the light emitting device package 100 shown in FIGS. 1 and 2, and the structure of the light emitting device package 120 will be described with reference to FIGS. 1 and 2 .

First, the rectifying unit 110 can fully rectify the inputted AC voltage (vac) to the ripple voltage (vdc) based on the four diodes.

At this time, the rectifier 110 can be connected to four diodes in the form of a bridge, and a general description thereof will be omitted.

The AC voltage (vac) is an AC external drive voltage having an effective value of 100 V or 200 V, and may have a frequency of 50 Hz to 60 Hz, but is not limited thereto.

The light emitting device package 120 includes first to fourth light emitting groups g1 to g4 and first to fourth light emitting groups G1 to G4 that sequentially emit light according to the level of the pulsating voltage vdc rectified by the rectifying unit 110, (not shown) electrically connected to the first to fifth electrode patterns g1 to g4.

The first to fifth electrode patterns may include first to fifth regions 21a to 25a and first to fifth line regions 21b to 25b as described above with reference to FIGS.

In the embodiment, the light emitting device package 120 is shown and described as including four light emitting groups g1 to g4, but the number of light emitting groups is not limited.

The first to fourth light emitting groups g1 to g4 are connected to each other in series and at least one of the first to fourth light emitting groups g1 to g4 may be driven according to the connection state of the driving unit 130, Do not limit.

Each of the first to fourth light emitting groups g1 to g4 may include a plurality of light emitting elements, and the light emitting elements included in the first to fourth light emitting groups g1 to g4 may include a driving voltage May be different from each other.

For example, in the first light emitting group g1, the reference level vf of the drive voltage is 33 V, the second light emitting group g2 has the reference level vf of the drive voltage of 66 V, Assuming that the reference level vf of the driving voltage is 99V and the reference level vf of the driving voltage is set to 110V in the fourth light emitting group g4 and the maximum level of the pulsating voltage vdc is 110V I suppose.

At this time, the first light emitting group g1 emits light with a pulsating voltage vdc level within 0V to 110V, and the second light emitting group g2 emits light with a pulsating voltage vdc level within 33V to 110V. The third light emitting group g3 emits light at a level of the pulsating voltage vdc from 66V to 110V and the fourth light emitting group g4 emits light at 99V to 110V.

The driving unit 130 receives the pulsating voltage vdc rectified by the rectifying unit 110 and can detect the level of the pulsating voltage vdc.

The driving unit 130 drives the first to fourth light emitting groups g1 to g4 according to the level of the pulsating voltage vdc based on the reference level vf set for each of the first to fourth light emitting groups g1 to g4. 0.0 > g4. < / RTI >

That is, the driving unit 130 may be connected to each of the first to fifth electrode patterns connected to the first to fourth light emitting groups g1 to g4 by a terminal.

The driving unit 130 may include a switch for connecting a terminal connected to each of the first through fifth electrode patterns to the ground. The first through fifth electrode patterns may be formed in accordance with the level of the pulsed voltage vdc. The switch can be controlled so that the terminal connected to each of them is connected to the ground.

For example, assuming that the level of the pulsating voltage vdc is 20 V, the driving unit 130 supplies the pulsating voltage vdc supplied to the first line region 21b included in the first electrode pattern to the first light emission The first light emitting group g1 is turned on to supply the second electrode pattern connected to the second line region 21b through the group g1 so that the terminal connected to the second electrode pattern is connected to the ground, A current path can be formed which allows only light to be emitted.

The driving unit 130 may form a current path so that light is emitted to at least one of the first to fourth light emitting groups g1 to g4 according to the level of the pulsating voltage vdc, I do not.

4 is a circuit diagram showing a circuit configuration of the light emitting module shown in Fig.

Fig. 4 is a simplified circuit diagram for Fig. 3, and the configuration referred to in Fig. 3 is omitted from the description or briefly described.

4, the light emitting module includes a voltage source 1 for supplying an AC voltage (vac), a rectifying part 110 for rectifying an AC voltage (vac) to a pulsating voltage (vdc), a light source A driving unit 130 for controlling emission of light from at least one of the light emitting device package 120 including the first to fourth light emitting groups g1 to g4 and the first to fourth light emitting groups g1 to g4, . ≪ / RTI >

The first to fourth light emitting groups g1 to g4 may be connected in series to each other with reference to the driving unit 130 and the first to third contacts n1, n2 and n3.

At this time, at least one of the first to fourth light emitting groups g1 to g4 is turned on according to the operation of each of the switches in the driving unit 130 connected to the terminals connected to the first to third contacts n1, n2 and n3 It is possible to emit light by receiving the pulsating voltage vdc.

That is, the driver 130 supplies the first through third contacts n1, n2, and n3 to the at least one of the first through fourth light emitting groups g1 through g4 according to the level of the pulsating voltage vdc. ) To turn on at least one of the switches to form a current path.

In the embodiment, each of the first to third contacts n1, n2, and n3 corresponds to each of the second to fourth line regions 22b, 23b, and 24b shown in Figs. 1 to 3, .

FIG. 5 is a waveform diagram illustrating a ripple voltage according to an embodiment of the present invention, and FIG. 6 is a diagram illustrating a current path for the operation of the light emitting module according to the embodiment.

5 and 6, the light emitting module may emit light in at least one of the first to fourth light emitting groups g1 to g4 according to the levels of the pulsating voltage vdc of 33 V, 66 V, 99 V, and 110 V have.

That is, the driving unit 130 outputs the pulsating voltage vdc rectified by the rectifying unit 110 during the first time t1 when 33 V is detected from the time when the level of the pulsating voltage vdc is detected to be 33 V or less, that is, The first current path ps1 may be formed so as to be supplied only to the first light emitting group g1.

The first current path ps1 may form a path through which the pulsating current vdc input to the first light emitting group g1 is supplied to the ground connected to the driving unit 130 through the first contact n1.

That is, the first current path ps1 may include a switch that operates from the inside of the driving unit 130 so that the first contact n1 is connected to the ground.

The driving unit 130 outputs the pulsating voltage vdc rectified by the rectifying unit 110 during the second time t2 at which 66 V is detected from the time when the level of the pulsating voltage vdc is detected from 33 V to 66 V, Can be supplied only to the first and second light emitting groups g1 and g2.

That is, as the level of the pulsating voltage vdc increases after the first current path ps1 is formed, the second current path ps2 is switched to the second light emitting group Vdc through the first contact n1, g2 and the second contact n2 to the ground connected to the driving unit 130. In this case,

In other words, the second current path ps2 is a state in which the pulsating voltage vdc is not supplied to the driving unit 130 through the first contact n1 and the first current path ps1 through the second contact n2 And is supplied to the driving unit 130.

 At this time, the first and second light emitting groups g1 and g2 may emit light.

The driving unit 130 outputs the pulsating voltage vdc rectified by the rectifying unit 110 during the third time t3 when the level of the pulsating voltage vdc is detected from 66V to 99V, The third current path ps3 can be formed so as to be supplied only to the first, second, and third light emitting groups g1, g2, g3.

That is, as the level of the pulsating voltage vdc increases after the second current path ps2 is formed, the third current path ps3 is switched to the third lightpath group vdc through the second contact n1, g3 and the third contact n3 to form a path that is supplied to the ground connected to the driving unit 130. [

In other words, the third current path ps3 is determined such that the pulsating voltage vdc is not supplied to the driving unit 130 through the second contact n2 and the second current path ps2 through the third contact n3 And is supplied to the driving unit 130.

Lastly, the driving unit 130 outputs the ripple voltage rectified by the rectifying unit 110 during the fourth time t4 when the level of the ripple voltage vdc is detected to be equal to or higher than 99V and lower than or equal to 110V, the fourth current path ps4 may be formed so that the first to fourth light emitting groups g1 to gd are supplied only to the first to fourth light emitting groups g1 to g4.

That is, as the level of the pulsating voltage vdc increases after the third current path ps3 is formed, the fourth current path ps4 is connected to the fourth light-emitting group vdc through the third contact n3, g4 to form a path connected to the ground.

7 is an exploded perspective view showing a display device according to an embodiment.

7, the display device 1000 according to the embodiment includes a light guide plate 1041, a light source module 1031 for providing light to the light guide plate 1041, a reflection member 1022 below the light guide plate 1041, The display panel 1061 and the light guide plate 1041 on the optical sheet 1051, the light source module 1031 and the bottom cover 1011 accommodating the reflective member 1022 on the optical sheet 1051 , But is not limited thereto.

The bottom cover 1011, the reflective sheet 1022, the light guide plate 1041 and the optical sheet 1051 can be defined as a light unit 1050.

The light guide plate 1041 serves to diffuse light into a surface light source. The light guide plate 1041 is made of a transparent material and may be made of a material such as acrylic resin such as polymethylmethacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), cycloolefin copolymer (COC), and polyethylene naphthate As shown in FIG.

The light source module 1031 provides light to at least one side of the light guide plate 1041, and ultimately acts as a light source of the display device.

The light source module 1031 includes at least one light source module 1031 and may provide light directly or indirectly on one side of the light guide plate 1041. [ The light source module 1031 includes a substrate 1033 and a light emitting device package 1035 according to the embodiment described above and the light emitting device package 1035 may be arrayed on the substrate 1033 at predetermined intervals.

The substrate 1033 may be a printed circuit board (PCB) including a circuit pattern (not shown). However, the substrate 1033 may include not only a general PCB but also a metal core PCB (MCPCB), a flexible PCB (FPCB), and the like, but the present invention is not limited thereto. When the light emitting device package 1035 is mounted on the side surface of the bottom cover 1011 or on the heat radiation plate, the substrate 1033 can be removed. Here, a part of the heat dissipation plate may be in contact with the upper surface of the bottom cover 1011.

The plurality of light emitting device packages 1035 may be mounted on the substrate 1033 such that the light emitting surface is spaced apart from the light guiding plate 1041 by a predetermined distance. However, the present invention is not limited thereto. The light emitting device package 1035 can directly or indirectly provide light to the light-incident portion, which is one surface of the light guide plate 1041, but is not limited thereto.

A reflective member 1022 may be disposed below the light guide plate 1041. [ The reflecting member 1022 reflects the light incident on the lower surface of the light guide plate 1041 so as to face upward, thereby improving the brightness of the light unit 1050. The reflecting member 1022 may be formed of, for example, PET, PC, PVC resin or the like, but is not limited thereto. The reflecting member 1022 may be the upper surface of the bottom cover 1011, but is not limited thereto.

The bottom cover 1011 can house the light guide plate 1041, the light source module 1031, the reflective member 1022, and the like. To this end, the bottom cover 1011 may be provided with a receiving portion 1012 having a box shape with an opened top surface, but the present invention is not limited thereto. The bottom cover 1011 can be coupled with the top cover, but is not limited thereto.

The bottom cover 1011 may be formed of a metal material or a resin material, and may be manufactured using a process such as press molding or extrusion molding. In addition, the bottom cover 1011 may include a metal or non-metal material having good thermal conductivity, but is not limited thereto.

The display panel 1061 is, for example, an LCD panel, including first and second transparent substrates facing each other, and a liquid crystal layer interposed between the first and second substrates. A polarizing plate may be attached to at least one surface of the display panel 1061, but the present invention is not limited thereto. The display panel 1061 displays information by the light that has passed through the optical sheet 1051. Such a display device 1000 can be applied to various types of portable terminals, monitors of notebook computers, monitors of laptop computers, televisions, and the like.

The optical sheet 1051 is disposed between the display panel 1061 and the light guide plate 1041 and includes at least one light-transmitting sheet. The optical sheet 1051 may include at least one of a sheet such as a diffusion sheet, a horizontal and vertical prism sheet, and a brightness enhancement sheet, for example. The diffusion sheet diffuses incident light, and the horizontal and / or vertical prism sheet condenses incident light into a display area. The brightness enhancing sheet improves the brightness by reusing the lost light. A protective sheet may be disposed on the display panel 1061, but the present invention is not limited thereto.

Here, the optical path of the light source module 1031 may include the light guide plate 1041 and the optical sheet 1051 as an optical member, but the invention is not limited thereto.

8 is a cross-sectional view showing a display device according to another embodiment.

8, the display device 1100 includes a bottom cover 1152, a substrate 1120 on which the above-described light emitting device 1124 is arrayed, an optical member 1154, and a display panel 1155.

The substrate 1120 and the light emitting device package 1124 may be defined as a light source module 1160. The bottom cover 1152, the at least one light source module 1160, and the optical member 1154 may be defined as a light unit 1150. The bottom cover 1152 may be provided with a receiving portion 1153, but the present invention is not limited thereto. The light source module 1160 includes a substrate 1120 and a plurality of light emitting devices 1124 arranged on the substrate 1120.

Here, the optical member 1154 may include at least one of a lens, a light guide plate, a diffusion sheet, a horizontal and vertical prism sheet, and a brightness enhancement sheet. The light guide plate may be made of a PC material or a polymethyl methacrylate (PMMA) material, and the light guide plate may be removed. The diffusion sheet diffuses incident light, and the horizontal and vertical prism sheets condense incident light into a display area. The brightness enhancing sheet enhances brightness by reusing the lost light.

The optical member 1154 is disposed on the light source module 1160 and performs surface light source, diffusion, and light condensation on the light emitted from the light source module 1160.

9 is an exploded perspective view showing a lighting apparatus according to an embodiment.

9, the lighting apparatus according to the embodiment includes a cover 2100, a light source module 2200, a heat discharger 2400, a power supply unit 2600, an inner case 2700, and a socket 2800 . Further, the illumination device according to the embodiment may further include at least one of the member 2300 and the holder 2500. The light source module 2200 may include the light emitting device package according to the embodiment.

For example, the cover 2100 may have a shape of a bulb or a hemisphere, and may be provided in a shape in which the hollow is hollow and a part is opened. The cover 2100 may be optically coupled to the light source module 2200. [ For example, the cover 2100 may spread, scatter, or excite light provided from the light source module 2200. The cover 2100 may be a kind of optical member. The cover 2100 can be coupled to the heat discharging body 2400. The cover 2100 may have an engaging portion that engages with the heat discharging body 2400.

The inner surface of the cover 2100 may be coated with a milky white paint. Milky white paints may contain a diffusing agent to diffuse light. The surface roughness of the inner surface of the cover 2100 may be formed larger than the surface roughness of the outer surface of the cover 2100. [ This is because light from the light source module 2200 is sufficiently scattered and diffused to be emitted to the outside.

The cover 2100 may be made of glass, plastic, polypropylene (PP), polyethylene (PE), polycarbonate (PC), or the like. Here, polycarbonate is excellent in light resistance, heat resistance and strength. The cover 2100 may be transparent so that the light source module 2200 is visible from the outside, and may be opaque. The cover 2100 may be formed by blow molding.

The light source module 2200 may be disposed on one side of the heat discharging body 2400. Accordingly, heat from the light source module 2200 is conducted to the heat discharger 2400. The light source module 2200 may include a light emitting element 2210, a connection plate 2230, and a connector 2250.

The member 2300 is disposed on the upper surface of the heat discharging body 2400 and has guide grooves 2310 through which the plurality of light emitting device packages 2210 and the connector 2250 are inserted. The guide groove 2310 corresponds to the substrate of the light emitting device package 2210 and the connector 2250.

The surface of the member 2300 may be coated or coated with a light reflecting material. For example, the surface of the member 2300 may be coated or coated with a white paint. The member 2300 reflects the light reflected by the inner surface of the cover 2100 toward the light source module 2200 in the direction of the cover 2100 again. Therefore, the light efficiency of the illumination device according to the embodiment can be improved.

The member 2300 may be made of an insulating material, for example. The connection plate 2230 of the light source module 2200 may comprise an electrically conductive material. Therefore, electrical contact can be made between the heat discharging body 2400 and the connecting plate 2230. The member 2300 may be formed of an insulating material to prevent an electrical short circuit between the connection plate 2230 and the heat discharging body 2400. The heat discharging body 2400 receives heat from the light source module 2200 and heat from the power supplying unit 2600 to dissipate heat.

The holder 2500 blocks the receiving groove 2719 of the insulating portion 2710 of the inner case 2700. Therefore, the power supply unit 2600 housed in the insulating portion 2710 of the inner case 2700 is sealed. The holder 2500 has a guide projection 2510. The guide protrusion 2510 may have a hole through which the protrusion 2610 of the power supply unit 2600 penetrates.

The power supply unit 2600 processes or converts an electric signal provided from the outside and provides the electric signal to the light source module 2200. The power supply unit 2600 is housed in the receiving groove 2719 of the inner case 2700 and is sealed inside the inner case 2700 by the holder 2500.

The power supply unit 2600 may include a protrusion 2610, a guide unit 2630, a base 2650, and a protrusion 2670.

The guide portion 2630 has a shape protruding outward from one side of the base 2650. The guide portion 2630 can be inserted into the holder 2500. A plurality of components can be disposed on one side of the base 2650. The plurality of components include, for example, a DC converter for converting an AC power supplied from an external power source into a DC power source, a driving chip for controlling driving of the light source module 2200, an ESD (ElectroStatic discharge protection device, but are not limited thereto.

The projection 2670 has a shape protruding outward from the other side of the base 2650. The protrusion 2670 is inserted into the connection portion 2750 of the inner case 2700 and is supplied with an electrical signal from the outside. For example, the protrusion 2670 may be provided to be equal to or smaller than the width of the connection portion 2750 of the inner case 2700. Each of the positive wire and the negative wire is electrically connected to the protrusion 2670 and the other end of the positive wire and the negative wire can be electrically connected to the socket 2800.

The inner case 2700 may include a molding part together with the power supply part 2600. The molding part is a hardened part of the molding liquid so that the power supply part 2600 can be fixed inside the inner case 2700.

The light emitting device package according to the embodiment can be applied to a light emitting device package according to embodiments of the present invention. .

Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined.

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements.

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 should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

Claims (6)

A rectifier for outputting a ripple voltage rectified by the input AC voltage;
A light emitting device package including a plurality of light emitting groups that sequentially emit light according to a level of the pulsating voltage; And
And a driving unit for detecting a level of the pulsating voltage and forming a current path such that the plurality of light emitting groups sequentially emit light. The method according to claim 1,
The rectifying unit includes:
A light emitting module that is a bridge rectifier circuit. The method according to claim 1,
Wherein the plurality of light-
And a light emitting module connected in series to the driving unit. The method of claim 3,
Wherein the plurality of light-
Wherein a reference level of the pulsating voltage for emitting the light is different. 5. The method of claim 4,
Wherein the plurality of light-
And sequentially emits the light according to the current path generated by the driving unit. The method according to claim 1,
The driving unit includes:
Wherein the light emitting device is configured to emit light in at least one light emitting group of the plurality of light emitting groups and a level lower than the reference level by comparing the level of the pulsating voltage with a reference level of each of the plurality of light emitting groups Emitting module.

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