KR20170132058A - Lighting module and lighting apparatus - Google Patents

Abstract

According to an embodiment of the present invention, disclosed is a lighting module comprising: a substrate; a plurality of light emitting devices arranged on the substrate having a light emitting surface adjacent to an upper surface of the substrate; and a reflector arranged on a light emitting side of each light emitting device, wherein the reflector includes a first reflective surface corresponding to the light emitting surface of each light emitting device, and second and third reflective surfaces arranged on both outer sides of the first reflective surface. The first to third reflective surfaces include a plurality of reflective cells having a convex part and a concave part, the reflector including a first bridge part vertically separating the reflective cells and a second bridge part horizontally separating the reflective cells wherein the first reflective surface has a height gradually becoming higher as a distance from the light emitting device increases, and the second and third reflective surfaces facing each other on both sides of the first reflective surface. According to the lighting module, it is possible to improve brightness of a surface light source.

Description

[0001] DESCRIPTION [0002] LIGHTING MODULE AND LIGHTING APPARATUS WITH THE SAME [

Embodiments relate to an illumination module having a plurality of light emitting diodes and providing a planar light source.

Embodiments relate to a lighting device having a lighting module.

The embodiments relate to a vehicle lighting module and a lighting device having the same.

Typical lighting applications include automotive lights as well as backlights for displays and signs.

A light emitting device such as a light emitting diode (LED) has advantages such as low power consumption, semi-permanent lifetime, quick response speed, safety, and environmental friendliness compared to conventional light sources such as fluorescent lamps and incandescent lamps. Such a light emitting diode is applied to various lighting devices such as various display devices, an interior lamp, and an outdoor.

In recent years, lamps employing light emitting diodes as vehicle light sources have been proposed. Compared with an incandescent lamp, a light emitting diode is advantageous in that power consumption is small. However, since the emission angle of light emitted from the light emitting diode is small, there is a demand for increasing the light emission area of the lamp using the light emitting diode when the light emitting diode is used as a vehicle lamp.

Because the size of the light emitting diode is small, it can increase the design freedom of the lamp and it is economical due to the semi-permanent lifetime.

An embodiment provides an illumination module having a surface light source using a plurality of light emitting elements and a reflector.

The embodiment provides an illumination module in which the light uniformity of the surface light source is improved by using a reflector that reflects the light emitted from each of the plurality of light emitting elements in the upward direction.

The embodiment provides an illumination module in which the reflecting surface of the reflector corresponding to each of the plurality of light emitting elements has a slope or a curved surface.

The embodiment provides an illumination module having a reflector in which concave portions and convex portions are alternately arranged on the surface of the reflection surface, and an illumination device having the same.

An illumination module according to an embodiment includes: a substrate; A plurality of light emitting elements disposed on the substrate and having a light emitting surface adjacent to an upper surface of the substrate; And a reflector disposed on a light output side of each of the plurality of light emitting elements, wherein the reflector includes a reflective surface corresponding to a light exit surface of each of the light emitting elements, and the reflective surface includes a plurality of A light emitting cell and a bridge portion having a width smaller than a width of the light emitting cell between the plurality of light emitting cells, wherein each light emitting cell has a convex portion adjacent to the light emitting element, and a convex portion disposed between the convex portion and the bridge portion Wherein the reflective surface has a concave negative curvature lower than a line segment connecting both edges and has a gradually higher height as the distance from the light emitting element increases.

An illumination device according to an embodiment includes: a light source module having a substrate, a plurality of light emitting devices on the substrate, and a reflector disposed on the light emitting side of the plurality of light emitting devices; A housing having a storage space in which an upper portion thereof is opened and in which the lighting module is disposed; And an optical member disposed on the illumination module, wherein the reflector is disposed on the substrate, the reflector includes a reflective surface corresponding to a light exit surface of each of the light emitting devices, And a bridge portion having a width smaller than the longitudinal width of the light emitting cells between the plurality of light emitting cells, wherein each light emitting cell includes a convex portion adjacent to the light emitting element, Wherein the reflective surface has a concave negative curvature lower than a line segment connecting both edges, and has a gradually higher height as the distance from the light emitting element increases.

According to the illumination module according to the embodiment, the brightness of the surface light source can be improved.

According to the illumination module according to the embodiment, the light uniformity of the surface light source can be improved.

The embodiment can reduce the loss of light by not using the molding member between the reflectors.

The optical reliability of the illumination module according to the embodiment and the illumination device having the same can be improved.

The reliability of the illumination device for a vehicle having the illumination module according to the embodiment can be improved.

1 is a side sectional view showing a lighting module according to a first embodiment.
2 is another example of the lighting module of Fig.
3 is a side sectional view showing a lighting module according to the second embodiment.
Figure 4 is another example of the lighting module of Figure 3;
Fig. 5 is a view of a lighting device having the lighting modules of Figs. 1 and 3. Fig.
6 is a view showing an example in which a heat radiating plate is arranged in the illuminating device of Fig.
7 is a perspective view of a lighting apparatus having a lighting module according to a third embodiment.
8 is a cross-sectional view schematically showing a lighting apparatus to which the optical member of Fig. 7 is coupled.
Fig. 9 is a longitudinal sectional view schematically showing the illumination device of Fig. 8; Fig.
10 is a plan view of the reflector of the illuminating device of Fig. 9 developed.
Fig. 11 (a) is a view showing an example of a BB side section of the reflector in Fig. 9, and Fig. 9 (b) is a view showing an example of CC side section of the reflection cell in Fig.
12 is a partial enlarged view of the lighting apparatus of Fig.
13 is a detailed view of the area A of the reflecting surface of the reflector of Fig.
14 is another example of the illumination device of Fig.
Fig. 15 is another example of the illumination device of Fig.
16 is a front view showing a light emitting device of the illumination module according to the embodiment.
17 is a cross-sectional view of the light emitting device of Fig. 16 on the AA side.
18 is a front view in which the light emitting element of Fig. 16 is disposed on a substrate.
19 is a side view in which the light emitting device of Fig. 16 is arranged on a substrate.
20 is a view of a lamp having a lighting device according to an embodiment.
Fig. 21 is a plan view of a vehicle to which the vehicle lamp of Fig. 20 is applied. Fig.
22 is a diagram showing the luminous intensity by each reflector in the illuminating device according to the embodiment.
23 is a diagram showing a light distribution distribution by a lighting apparatus according to the embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the embodiments described herein and the configurations shown in the drawings are only a preferred embodiment of the present invention, and that various equivalents and modifications may be made thereto at the time of the present application.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and the meaning of each term should be interpreted based on the contents throughout this specification. The same reference numerals are used for portions having similar functions and functions throughout the drawings.

The illumination device according to the present invention is applicable to various lamp devices requiring illumination, such as a vehicle lamp, a domestic illumination device, and an industrial illumination device. For example, when the present invention is applied to a vehicle lamp, it can be applied to a head lamp, a car light, a side mirror, a fog lamp, a tail lamp, a brake light, , A backup lamp, and the like. The lighting device of the present invention can be applied to the field of indoor and outdoor advertisement devices, and it can be applied to all lighting related fields or advertising related fields that are currently developed and commercialized or can be implemented according to future technology development.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the description of the embodiments, it is to be understood that each layer (film), region, pattern or structure is formed "on" or "under" a substrate, each layer The terms " on "and " under " encompass both being formed" directly "or" indirectly " In addition, the criteria for above or below each layer will be described with reference to the drawings.

1 is a side sectional view showing a lighting module according to a first embodiment, and Fig. 2 is another example of the lighting module shown in Fig.

1 and 2, an illumination module 400 according to an embodiment includes a substrate 201, a plurality of light emitting devices 100 disposed on the substrate 201, And a reflector 110 disposed on the emission side.

The substrate 201 includes a printed circuit board (PCB), for example, a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, FR-4 substrate. When the substrate 201 is disposed on a metal-core PCB having a metal layer disposed on the bottom, heat dissipation efficiency of the light-emitting device 100 can be improved.

The substrate 201 may include a wiring layer on the upper surface thereof, and the wiring layer may electrically connect the plurality of light emitting devices 100. The plurality of light emitting devices 100 may be connected in series, in parallel, or in series-parallel by the wiring layer, but the present invention is not limited thereto.

The substrate 201 may function as a base member located at the base of the light emitting device 100 and the reflector 110.

The light emitting device 100 may be disposed on the substrate 201 as shown in FIGS. 18 and 19. A plurality of the light emitting devices 100 may be arranged on the substrate 201 with a predetermined interval B5. The light emitting devices 100 may be arranged in at least one row on the substrate 201 or may be arranged in two or more rows and the one or more rows of the light emitting devices 100 may be arranged on the substrate 201, May be arranged in the longitudinal direction (Y). The light emitting device 100 may be disposed on the reflecting surface 112 of the reflector 110 such that one or a plurality of the light emitting devices 100 face each other. For convenience of explanation, one light emitting device 100 is disposed on the reflective surface 112 of the reflector 110. [

The light emitting device 100 may include a package having an LED chip packaged therein. The light emitting chip may emit at least one of blue, red, green, and ultraviolet (UV) The device may emit at least one of white, blue, red, and green. The light emitting device 100 may be a side view type in which a bottom portion is electrically connected to the substrate 201, but the present invention is not limited thereto.

The light exit surface 101 of the light emitting device 100 may correspond to the reflecting surface 112 of the reflector 110 and may be adjacent to the upper surface of the substrate 201, It can be a vertical plane. The optical axis L1 of the light emitted to the light exit surface 101 of the light emitting device 100 may be an axial direction parallel to the upper surface of the substrate 201, Can be tilted within a range of 30 degrees. The reflecting surface 112 may be a surface that is not parallel to the optical axis L1.

The thickness T1 of the light emitting device 100 may be 3 mm or less, for example, 2 mm or less, and may be in a range of 1/10 to 1/2 of a maximum thickness or height T11 of the reflector 110. The length of the light emitting device 100 may be at least 1.5 times the thickness T1 of the light emitting device 100, but the present invention is not limited thereto. The light emitting element 100 may have a light emitting angle in the longitudinal direction thereof larger than a light emitting angle in the thickness direction Z. [ The light exit angle in the longitudinal direction X of the light emitting device 100 may range from 110 degrees to 160 degrees.

The reflector 110 may be spaced apart from the light exit surface 101 of the light emitting device 100 by a predetermined distance B1 and the interval B1 may be 0.5 mm or more, A hot spot or a light fry phenomenon may occur.

The reflector 110 includes a reflective surface 112 corresponding to the light exit surface 101 of the light emitting device 100 and the reflective surface 112 may be a sloped surface or a curved surface. If the reflective surface 112 is a sloped surface, it may be a multi-tapered structure. For convenience of explanation, the embodiment will be described with a structure in which the reflecting surface 112 is a curved surface. The reflecting surface 112 may be a concave curved surface from a straight line B4 connecting the lower end P1 and the upper end P2 or a curved surface having a negative curvature. The curved surface includes a shape having a curvature of a parabola or a curved surface having an aspherical shape.

The reflector 110 may become thicker as the distance from the light emitting device 100 increases. The reflector 110 may become thicker as the distance from the light exit surface 101 of the light emitting device 100 increases. The reflector 110 may reflect the light emitted from the light emitting device 100 in an upward direction. In this case, the reflector 110 may vary the path of light reflected by the curved reflective surface 112, can do. Accordingly, the light reflected by the reflector 110 can be irradiated in the form of a surface light source.

The reflector 110 may be disposed corresponding to the light exit surface 101 of each of the light emitting devices 100. The reflective surface 112 of the reflector 110 may be disposed so as not to overlap with the light emitting device 100 in the vertical direction. The distance B5 between the light emitting devices 100 may be greater than the length B2 of the bottom surface of each reflector 110. [ The spacing B5 of the light emitting devices 100 may be the same as or different from the spacing between the reflectors 110 and the reflectors 110 may be arranged alternately . As another example, when the distance B5 between the light emitting devices 100 is smaller than the length (e.g. B2> B5) of the reflector 110, a part of the reflector 110 may contact the light emitting device 100 They can be arranged to overlap each other in the vertical direction. For example, the top of the reflector 110 may be disposed on top of the light emitting device 100 disposed between adjacent reflectors 110. Or the reflective surface 112 of the reflector 110 may be disposed on the light emitting device 100 disposed between the adjacent reflectors 110. Accordingly, it is possible to prevent occurrence of dark areas in the area between the adjacent reflectors 110, to prevent hot spots, and to protect the light emitting device 100 in the absence of a molding member. As another example, the upper portion of the reflector 110 disposed on each emission side of the light emitting device 100 may be arranged to overlap with the lower portion of another adjacent reflector in the vertical direction. A part of the adjacent reflectors 110 are overlapped with each other in the vertical direction to protect the light emitting device 100. The height of the reflector 110 can be lowered and the occurrence of hot spots or dark areas in the boundary region can be prevented. . In this case, since the light emitting device 100 emits light in a side view type, it may not affect the light.

A plurality of the reflectors 110 may be spaced apart from each other. The plurality of reflectors 110 may be physically separated from each other or may be connected to each other. When separating the reflectors 110, they may be attached on each substrate 201 or attached to other structures, such as the housing 300 (Fig. 7), but are not limited thereto. When the reflectors 110 are connected to each other, they may be connected to each other through the outside of the light emitting device 100.

The outer surface 113 of the reflector 110 disposed between the light emitting devices 100 may have a predetermined distance B3 from the light emitting device 100 disposed between the reflectors 110, ≪ / RTI > The interval B3 may range from 0 to 2 mm. At least a part of the light emitting device 100 disposed between the reflectors 110 may vertically overlap with the reflector 110. The reflector 110 may be disposed on the light emitting device 100 or may contact the surface of the light emitting device 100 when the distance between the outer wall of the reflector 110 and the adjacent light emitting device 100 is 0 or less, .

The reflector 110 includes a material having a light reflectance of 70% or more with respect to light emitted from the light emitting device 100. The reflector 110 may be formed of a single layer or a multi-layer structure using a polymer, a metal, or a dielectric, and may include, for example, a metal / dielectric laminate structure. The material of the reflector 110 may include a polymer, a polymer compound, or a metal. The material of the reflector 110 may be a polymer filled with inorganic fine particles such as titanium dioxide (TiO 2), a thermosetting resin including silicon, an epoxy resin, or a plastic material, or a material having high heat resistance and high light resistance . The above-mentioned silicon includes a white-based resin. The body may be formed of at least one member selected from the group consisting of an epoxy resin, a modified epoxy resin, a silicone resin, a modified silicone resin, an acrylic resin, and a urethane resin. For example, an epoxy resin comprising triglycidylisocyanurate, hydrogenated bisphenol A diglycidyl ether and the like and an acid comprising hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride and the like DBU (1,8-Diazabicyclo (5,4,0) undecene-7) as a curing accelerator in an epoxy resin, ethylene glycol, titanium oxide pigment and glass fiber as a cocatalyst were added, A solid epoxy resin composition that has been cured and B-staged can be used. However, the present invention is not limited thereto. The reflector 110 may be formed of an optical film, PET, PC, PVC resin, or the like.

When the surface of the reflecting surface 112 is a metal, the reflector 110 may be formed of a layer having at least one of aluminum, chromium, silver, and barium sulfate or an alloy thereof. The metal layer may be a layer coated with a material different from that of the reflector 110.

The row of the light emitting device 100 / reflector 110 may be a straight bar having a predetermined length, a curved bar having a predetermined curvature, a curved bar bent at least once, Or may be a mixture of two or more of the shapes. Such a shape may be different depending on the type and structure of a vehicle lamp such as an application such as a head lamp, a car light, a side mirror, a fog lamp, a tail lamp, a car lamp, . The embodiment can avoid the use of a separate molding member on the reflector 110, thereby reducing light loss.

2 is another example of the lighting module of Fig. In the description of FIG. 2, the same configuration as FIG. 1 will be described with reference to the above description.

2, the lighting module includes a substrate 201, a plurality of light emitting devices 100 on the substrate 201, and a reflector 110 disposed on the light emitting side of each of the light emitting devices 100 do.

The reflector 110 includes a reflective surface 114 having a concavo-convex structure to enhance reflection efficiency of incident light. The reflective surface 114 having the concavo-convex structure may reflect the incident light to improve the light uniformity of the surface light source. The convex portion S1 and the concave portion S2 may be arranged alternately or repeatedly. The convex portion S1 may have a certain pattern or may be repeated in an irregular pattern, and the concave portion S2 May be respectively disposed between the convex portions S1.

The convex portion S1 and the concave portion S2 may be disposed within the full width of the reflective surface 114 or within a half width of the directivity angle of the light emitting device 100 and may effectively reflect light. The reflection surface 114 may be arranged in a matrix form when the convex portion S1 and the concave portion S2 are defined as one reflection cell or a facet .

In the concavo-convex structure of the reflective surface 114, the convex portion S1 may include a convex curved surface or an inclined surface, and the concave portion S2 may have a concave curved surface or a sloped surface or a flat surface. The concave-convex structure may include a textured surface, an embossing shape, a shape having beads, a polygonal shape, a hemispherical shape, or an elliptical shape. The beads may be made of a material selected from the group consisting of polyethylene terephthalate, silicon, silica, glass bubble, polymethyl methacrylate (PMMA), urea, zinc, zirconium, A metal oxide such as aluminum oxide (Al ₂ O ₃ ), Acryl, or a combination thereof.

The concave portion S2 and / or the convex portion S1 in the concavo-convex structure of the reflective surface 114 may be gradually narrowed or the same as the distance from the light emitting device 100 that emits light, I do not. The length ratio of the concave portion S2 to the convex portion S1 in one reflective cell may be in the range of 1: 1 to 1: 9. The ratio of the area of the concave portion S2 to the convex portion S1 in one reflective cell can be in the range of 1: 1 to 1: 9. By increasing the length or the area of the convex portion S1 in such a single reflection cell, the reflection efficiency of the light incident from the light emitting device 100 can be improved and the uniformity of the light can be improved through the reflection of the light . The convex portion S1 in the one reflection cell is disposed closer to the light emitting device 100 than the concave portion S2 so as to reflect the incident light and the concave portion S2 is formed in the other convex portion S1). ≪ / RTI >

The convex portion S1 and the concave portion S2 may be formed along the concave curved surface of the reflecting surface 114 or along the inclined surface . Here, when the reflective surface 114 of the reflector 110 is a metal such as aluminum, silver, or chrome, the convex portion S1 or the concave portion S2 may be formed of a metal. The convex portion S1 and the concave portion S2 may be the same or different materials as the reflector 110. [

3 is a view showing a lighting module according to a second embodiment. In the description of FIG. 3, the description of the embodiments disclosed above will be referred to.

3, the lighting module 400A includes a substrate 201, a plurality of light emitting devices 100 on the substrate 201, and a reflector 120 disposed on the light emitting side of each light emitting device 100 ).

The reflector 120 includes a plate having a predetermined thickness T12 and a region between the reflecting surface 122 of the reflector 120 and the substrate 201 is an air gap. (123) may be disposed. The thickness of the plate may be in the range of 5 mm or less, for example, 1 to 3 mm. When the thickness of the plate is thicker than the above range, the improvement of the reflection efficiency is insignificant. When the thickness is thinner than the above range, it may be difficult to secure the rigidity of the plate. The reflective surface 122 of the reflector 120 may have a curved surface as shown in FIG. 1 or may include an inclined surface, which will be described with reference to FIG.

The reflector 120 may be spaced apart from the light exit surface 101 of the light emitting device 100 by a predetermined distance B1 and the interval B1 may be 0.5 mm or more, A hot spot or a light fry phenomenon may occur.

The reflector 120 includes a reflective surface 122 corresponding to the light exit surface 101 of the light emitting device 100 and the reflective surface 122 may be a sloped surface or a curved surface. When the reflective surface 122 is a sloped surface, the reflective surface 122 may be inclined in multiple steps. For convenience of explanation, the embodiment will be described with the structure in which the reflecting surface 122 is a curved surface. The reflecting surface 122 may be a concave curved surface or a curved surface having a negative curvature from a straight line B4 connecting the lower end P1 and the upper end P2. The curved surface includes a shape having a curvature of a parabola or a curved surface having an aspherical shape.

The reflector 120 may be gradually increased from the light emitting device 100. The reflector 120 may become thicker as the distance from the light exit surface 101 of the light emitting device 100 increases. The reflector 120 may reflect the light emitted from the light emitting device 100 in an upward direction. In this case, the reflector 120 may vary the traveling path of the light reflected by the curved reflective surface 122, can do. Accordingly, the light reflected by the reflector 120 can be irradiated in the form of a surface light source.

The reflector 120 may be disposed to correspond to the light exit surface 101 of each of the light emitting devices 100, respectively. The reflective surface 122 of the reflector 120 may be disposed so as not to overlap with the light emitting device 100 in the vertical direction. The distance B5 between the light emitting devices 100 may be greater than the length B2 of the bottom surface of each of the reflectors 120. [ The spacing B5 of the light emitting devices 100 may be the same as or different from the spacing between the reflectors 120, .

The reflector 120 includes a material having a light reflectance of 70% or more with respect to the light emitted from the light emitting device 100. The reflector 120 may be formed of a single layer or a multi-layer structure using a polymer, a metal, or a dielectric, and may include, for example, a metal / dielectric laminate structure. The material of the reflector 120 may include a polymer, a polymer compound, or a metal. The material of the reflector 120 may be a polymer filled with inorganic fine particles such as titanium dioxide (TiO 2), a thermosetting resin containing silicon, epoxy resin, or plastic material, or a material having high heat resistance and high light resistance . The above-mentioned silicon includes a white-based resin. The body may be formed of at least one member selected from the group consisting of an epoxy resin, a modified epoxy resin, a silicone resin, a modified silicone resin, an acrylic resin, and a urethane resin. For example, an epoxy resin comprising triglycidylisocyanurate, hydrogenated bisphenol A diglycidyl ether and the like and an acid comprising hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride and the like DBU (1,8-Diazabicyclo (5,4,0) undecene-7) as a curing accelerator in an epoxy resin, ethylene glycol, titanium oxide pigment and glass fiber as a cocatalyst were added, A solid epoxy resin composition that has been cured and B-staged can be used. However, the present invention is not limited thereto. The reflector 120 may be formed of an optical film, PET, PC, PVC resin, or the like.

When the surface of the reflecting surface 122 is a metal, the reflector 120 may be formed of a layer having at least one of aluminum, chromium, silver, and barium sulfate or an alloy thereof. The metal layer may be a layer coated with a material different from that of the reflector 120.

4 is a view showing a lighting module according to a second embodiment. In describing FIG. 4, the description of the embodiments disclosed above will be referred to.

4, the lighting module includes a substrate 201, a plurality of light emitting devices 100 on the substrate 201, and a reflector 120 disposed on a light emitting side of each of the light emitting devices 100 do.

The distance between the light emitting devices 100 may be wider than the distance between the reflecting surfaces 122 of the reflector 120 so that the light emitting device 100 may be disposed between the reflecting surfaces 122 of the adjacent reflector 120 have.

As another example, when the distance B5 between the light emitting devices 100 is less than the length of the reflector 120A (e.g., B2> B5), a part of the reflector 120A may contact the light emitting device 100 They can be arranged to overlap each other in the vertical direction. For example, the top of the reflector 120A may be disposed above the light emitting device 100 disposed between adjacent reflectors. Or the reflective surface 122 of the reflector 120A may be disposed on top of the light emitting device 100 disposed between adjacent reflectors. Accordingly, it is possible to prevent occurrence of dark areas in the area between adjacent reflectors, to prevent hot spots, and to protect the light emitting device 100 in the absence of a molding member.

As another example, the upper portion of the reflector 120 disposed on each emission side of the light emitting device 100 may be arranged to overlap with the lower portion of another adjacent reflector in the vertical direction. A part of the adjacent reflectors 120 are overlapped with each other in the vertical direction to protect the light emitting device 100. The height of the reflector 120 can be reduced and the occurrence of hot spots or dark areas . In this case, since the light emitting device 100 emits light in a side view type, it may not affect the light.

The reflector 120 includes a reflective surface 124 having a concavo-convex structure to enhance reflection efficiency of incident light. The reflective surface 124 having the concavo-convex structure may reflect the incident light to improve the light uniformity of the surface light source. The concave and convex structures S3 and S4 may be alternately or repeatedly arranged. The convex portion S3 may have a predetermined pattern or may be repeated in an irregular pattern, and the concave portion S4 May be disposed between the convex portions S3, respectively.

The recesses S4 and the protrusions S3 may be disposed within the full width of the reflective surface 122 or within a half width of the directivity angle of the light emitting device 100 and may effectively reflect light. The reflective surface 122 may be arranged in a matrix when the convex portion S3 and the concave portion S4 are one reflective cell or facet. The convex portion S3 may be further disposed adjacent to the light exit surface 101 of the light emitting device 100 than the concave portion S4 in each of the reflection cells.

In the concavo-convex structure of the reflective surface 122, the convex portion S3 may have a convex curved surface or an inclined surface, and the concave portion S4 may have a concave curved surface or an inclined or flat surface. The concave-convex structure may include a textured surface, an embossing shape, a bead shape, a polygonal shape, a hemispherical shape, or an elliptical shape.

The concave portion S4 and / or the convex portion S3 in the concavo-convex structure of the reflective surface 122 may be gradually narrowed or the same as the distance from the light emitting device 100 that emits light, I do not. The length ratio of the concave portion S4 to the convex portion S3 in one reflective cell may be in the range of 1: 1 to 1: 9. The ratio of the area of the concave portion S4 to the convex portion S3 in one reflective cell can be in the range of 1: 1 to 1: 9. By increasing the length or the area of the convex portion S3 in such a single reflection cell, the reflection efficiency of the light incident from the light emitting device 100 can be improved, and the uniformity of light can be improved through the reflection of the light .

The convex portion S3 and the concave portion S4 may be formed along the concave curved surface of the reflecting surface 122 or along the inclined surface . Here, when the reflective surface 122 of the reflector 120 is a metal such as aluminum, silver, or chrome, the convex portion S3 or the concave portion S4 may be formed of a metal. The convex portion S3 and the concave portion S4 may be the same or different materials from the reflector 120. [

5 is a view of a lighting device having a lighting module according to an embodiment.

Referring to FIG. 5, the illumination device includes an optical member 230 disposed on the illumination module 400. The illumination module 400 includes the illumination module of FIGS. 1 to 4 disclosed in the embodiment and includes a substrate 201, a plurality of light emitting devices 100 on the substrate 201, And includes the reflectors 110 and 120 disclosed in the embodiment on the light output side of the device 100. [

The optical member 230 can diffuse and transmit incident light. The optical member 230 uniformly diffuses and emits a surface light source reflected from the reflectors 110 and 120. The optical member 230 may include an optical lens or an inner lens, and the optical lens may condense the light toward the target or change the path of the light. The optical member 230 includes a plurality of lens units (231 in FIG. 8) on at least one of the upper surface and the lower surface, and the lens unit (231 in FIG. 8) Shape, or a shape protruding upwardly. This optical member 230 can control the light distribution characteristics of the illumination device.

The optical member 230 may include a material having a refractive index of 2.0 or less, such as 1.7 or less. The material of the optical member 230 may be formed of a transparent resin material of acrylic, polymethyl methacrylate (PMMA), polycarbonate (PC), epoxy resin (EP), or transparent glass.

The optical member 230 may be spaced from the illumination module such as the substrate 201 by a distance C1 of 50 mm or less, for example, 15 mm to 30 mm, If it is smaller than the above range, the uniformity of light can be lowered.

Fig. 6 is another example of the illumination device of Fig. 5, and includes a heat dissipation plate 210. Fig. The heat dissipation plate 210 is disposed on the lower surface of the substrate 201 and can dissipate heat conducted to the substrate 201. The heat dissipation plate 210 includes a plurality of heat dissipation fins 212, and a plurality of the plurality of heat dissipation fins 212 may be arranged at predetermined intervals in a downward direction. The heat dissipation plate 210 may include at least one of metals such as aluminum, copper, magnesium, nickel, or an alloy thereof.

The heat dissipation plate 210 may be the same as the area of the substrate 201 or may be wider or narrower than the area of the substrate 201, but the invention is not limited thereto. By arranging the heat dissipating plate 210, the operational reliability of the light emitting device 100 can be improved.

FIG. 7 is a perspective view showing the illumination device according to the third embodiment, FIG. 8 is a longitudinal sectional view showing the coupling device of FIG. 7, FIG. 11 (a) and 11 (b) are views showing examples of cross sections on the BB side and CC side of the reflector in Fig. 9, Fig. 12 is a partial enlarged view of the illuminating device in Fig. 8 And Fig. 13 is a detailed view of the area A of the reflecting surface of the reflector of Fig.

7 to 12, the lighting apparatus includes a housing 300 having a storage space 305, an illumination module 401 disposed at the bottom of the storage space 305 of the housing 300, And an optical member (230) disposed on the optical member (401).

The lighting module 401 includes a substrate 201, a light emitting device 100, and a reflector 150. The substrate 201 and the light emitting device 100 will be described with reference to the structures disclosed in the embodiments.

7 to 9, the housing 300 may be provided such that the outer side surface 303 of the storage space 305 is inclined with respect to the bottom surface of the housing 300, The surface can improve the light extraction efficiency. A metal material of a reflective material may be formed on the surface of the housing space 305 of the housing 300 and the light extraction efficiency in the housing space 305 may be improved by the metal material. The depth of the storage space 303 may be greater than the maximum height of the reflector 150 so that the reflected light from the reflector 150 can be guided to be dispersed and emitted.

The housing 300 includes a bottom portion 301 and a reflecting portion 302. The bottom portion 301 is disposed below the substrate 201. The reflecting portion 302 is disposed on the bottom portion 301, And may be disposed around the reflector 150.

The step 300 may include a step structure 307 on the inside of the upper part of the reflection part 302 and the step structure 307 may be disposed outside the optical member 230. The optical member 230 may be adhered to the step structure 307 of the housing 300 with an adhesive. The housing 300 may include a metal or plastic material, but the present invention is not limited thereto.

A hole (not shown) through which a cable connected to the substrate 201 passes may be formed in the bottom portion 301 or the reflecting portion 302 of the housing 300, but the present invention is not limited thereto. The bottom portion 301 of the housing 300 may be formed with a coupling hole 321 through which one or two or more of the reflectors 150 are coupled, , And may be a hole to which a fastening means such as a screw is fastened or a hole in the form of a hook. A part of the reflector 150 may have a hook structure or a screw hole, but the present invention is not limited thereto. Accordingly, the reflector 150 may be fixed to the bottom of the housing 300.

7 and 8, the reflector 150 may be disposed on the light output side of each light emitting device 100 and may be connected to each other. The connection portion 181 between the reflectors 150 may be disposed in a region between the reflectors 150 and overlapped in the longitudinal direction of the light emitting device 100. [ As shown in FIG. 11, legs 158 and 159 may be disposed on both sides of the reflector 150, for example, outside the X-axis direction. These legs 158 and 159 may extend to the upper surface of the substrate. The reflector 150 may be attached or fixed on the substrate 201 by the legs 158 and 159 and may connect adjacent reflectors 150 to each other.

The period Y2 of the reflectors 150 may be greater than the longitudinal length of the reflectors 150 and may range from 10 mm to 30 mm or from 15 mm to 25 mm, for example. The reflector 150 may be disposed so as not to overlap with the light emitting device 100 in the vertical direction to facilitate coupling of the reflector 150. The period Y2 of the reflectors 150 may be the same as the longitudinal length of the reflector 150. In this case, the upper portion of the reflector 150 may overlap the light emitting device 100 in the vertical direction. As another example, an upper portion of the reflector 150 disposed on each emission side of the light emitting device 100 may extend to the upper side of another adjacent light emitting device 100 to generate dark portions in a region between the adjacent reflectors 150 Hot spots can be prevented from occurring. As another example, the upper portion of the reflector 150 disposed on each emission side of the light emitting device 100 may be arranged to overlap with the lower portion of another adjacent reflector in the vertical direction. Part of the adjacent reflectors 150 are overlapped with each other in the vertical direction to protect the light emitting device 100. The height of the reflector 150 can be lowered and occurrence of hot spots or dark areas in the boundary region can be prevented. .

An optical member 230 is disposed on the illumination module according to an embodiment of the present invention and a plurality of lens units 231 are arranged in a lower portion of the optical member 230 to diffuse light incident from the reflector 150, It is possible to provide one light uniformity.

8-11, the reflector 150 according to the embodiment includes a reflective surface 151. The reflective surface 151 has a predetermined curvature outward from the center area of the reflector 150 Can be extended. The reflecting surface 151 may be disposed with a negative curvature with respect to both edges P4 and P5 as shown in FIG. 9 and 11, the distance between both edges P4 and P5 in the reflective surface 151 may gradually increase as the distance from the light emitting diode 100 increases. The reflective surface 151 may be gradually enlarged as the negative curvature between the left and right edges P4 and P5 is further away from the light emitting diode 100. [ The radius of curvature between the left and right edges P4 and P5 of the reflecting surface 151 may be 25 mm or less, for example, 20 mm or less. The reflective surface 151 has a negative curvature with respect to a straight line connecting the upper and lower edges P6 and P7 and may have a plurality of reflective cells S10. The radius of curvature of the negative curvature connected to the upper and lower edges P6 and P7 of the reflecting surface 151 may be greater than the radius of curvature of the left and right edges and may be in a range of, for example, 33 mm to 38 mm have.

The reflective surface 151 may be divided into a plurality of reflective cells S 10 by a bridge portion 154 arranged in the horizontal direction. The bridge unit 154 may connect the reflective cells S10 arranged in the vertical direction to each other. A plurality of the bridge portions 154 may be arranged parallel to each other. The number of the bridge units 154 may be less than or equal to the number of the light emitting cells S10.

The reflection cell S 10 may be longitudinally arranged from the first reflection cell S 11 to the last second reflection cell S 12 and may be connected to the bridge cell 154 between adjacent reflection cells S 10. The bridge portion 154 may be disposed in a plane inclined in the vertical direction and may be arranged in a curved plane in the horizontal direction. 11, the center P3 of each reflection cell S10 of the reflection surface 151 may be arranged to be lower than both edges P4 and P5.

The reflection surface 151 is arranged in the longitudinal direction of the plurality of reflection cells S10, and is arranged so as to become gradually higher as it is away from the light emitting diode 100, thereby providing a uniform light reflection distribution.

10, the transverse length X1 may be in a range of 10 mm or more, for example, 10 mm to 40 mm, or 15 mm to 30 mm. The longitudinal length Y1 of the reflector 150 may be equal to or less than the transverse length X1 and may range from 10 mm to 30 mm or from 15 mm to 25 mm have.

The reflective surface 151 may be disposed at a width E1 of 2 mm or more, for example, in a range of 2 mm to 30 mm. The vertical length E2 of the reflecting surface 151 may be smaller than the width E1 and may be smaller than 1/5, for example. The width E1 of the reflecting surface 151 may be the same as the width of each reflecting cell (for example, S10), and may be equal to the width of the reflector 150. [

The longitudinal widths E4 of the bridge portions 154 may be equal to or different from each other, and may be in a range of 0.2 mm or more, for example, 0.2 mm to 0.7 mm. The width E4 of the bridge section 154 is set to be 20% or less, for example, 12% to 16% of the longitudinal length E2 of the reflection cell S10, It is possible to prevent a decrease in the light intensity in the region between the cells S10. In the reflection cell S10, the ratios of the convex portion and the concave portion may be the same or different from each other.

8, 12, and 13, each reflection cell S10 of the reflection surface 151 has a convex portion S5 and a concave portion S6, and the convex portion S5 S5 may be disposed in a region lower than the concave portion S6. The convex portion S5 in the reflection cell S10 may be disposed closer to the light emitting device 100 than the concave portion S6. The convex portion S5 may be disposed adjacent to the light emitting device 100 or between the bridge portion 154 and the concave portion S6. The concave portion S6 may be disposed between the convex portion S5 and the bridge portion 154. [ The convex portion S5 of the reflective cell S10 may have a curved shape and the concave portion S6 may be a concave curved surface or an inclined surface connected to the curved surface of the convex portion S5. Segments of the reflector 150 connected to the convex portions S5 of the reflective cells S10 may be curved in a side view. The reflection cell S10 can effectively reflect the incident light, thereby providing a uniform surface light source.

Each of the reflectors 150 may have a polygonal top view shape and may have a regular square or rectangular shape, for example. Each reflective cell of the reflective surface 151 of the reflector 150 may have a polygonal shape such as a triangular, square, pentagonal, or hexagonal shape.

The bridge unit 154 connecting the reflection cells S 10 may be an inflection point of the reflection cells S 7 and may have a degree of freedom of the recesses S 6 and the convexities S 5 of the reflection cell S 10. Can be increased. When the bridge portion 154 has a predetermined width, the light collecting ability can be improved and the tolerance in manufacturing the reflection cell S10 can be reduced. The low point of the concave portion S6 in each reflection cell S10 may have a negative curvature than the bridge portion 154 or may be the same as or higher than the horizontal surface of the bridge portion 154 have.

The inclination angle of the upper bridge portion disposed on the reflector 150 may be larger than the inclination angle of the lower bridge portion adjacent to the light emitting device 100 among the plurality of bridge portions 154. [ For example, as shown in FIG. 12, the bridge portion 154, that is, the upper bridge portion may be inclined at an angle R3 with respect to a horizontal straight line, and the angle R3 may be in a range of 1 degree or more, Lt; / RTI >

9 and 10, a concave groove 161 is formed in a lower portion of the reflector 150, and the concave groove 161 is formed in a direction of an emission side of the light emitting device 100, for example, It is a depressed form. The concave groove 161 removes a part of the reflector 150 in the area adjacent to the light emitting device 100 so that hot spots are generated by the light reflected from a part of the reflector 150 adjacent to the light emitting device 100 Or the problem of difficulty in adjusting the light distribution can be solved.

The longitudinal length E5 of the concave groove 161 may be 70% or less of the transverse length E6 of the reflector 150, and may range from 30% to 65%, for example. The longitudinal length E5 of the concave groove 161 may be set to be in the range of 6% or more, for example, 6% to 50% or 20% to 30% of the longitudinal length X1 of the reflector 150 have. The transverse length E6 of the concave groove 161 may be in the range of 3 mm or more, for example, 3 mm to 20 mm, and the longitudinal length E5 of the concave groove 161 may be in the range of 2 mm or more, . The transverse length E6 of the concave groove 161 is disposed at least larger than the transverse length D1 of the light emitting device 100 to reduce the problem caused by light incident from the light emitting device 100. [ When the size of the concave groove 161 is smaller than the above range, it is difficult to control the path of the light emitted from the light emitting device 100, or hot spots may be generated.

The concave groove 161 may have a polygonal top shape or a hemispherical shape, but the present invention is not limited thereto. The concave groove 161 may have a curved edge portion. The concave groove 161 may include a recess 162 partially recessed corresponding to the optical axis L1 of the light emitting device 100. [ The recess 162 may have a triangular or hemispherical shape. The recess 162 may be disposed in an area between the first reflecting surfaces 153. [ Through the curved treatment of the recess 162 and the concave groove 161, the damage to the reflector 150 can be reduced.

The reflector 150 may have an air gap 163 at a rear lower portion thereof. The reflector 150 includes a material having a light reflectance of 70% or more with respect to the light emitted from the light emitting device 100. The reflector 150 may be formed of a single layer or a multi-layer structure using a polymer, a metal, or a dielectric, and may include a metal / dielectric laminate structure. The material of the reflector 150 may include a polymer, a polymer compound, or a metal. The material of the reflector 150 may be a polymer filled with inorganic fine particles such as titanium dioxide (TiO 2), a thermosetting resin including silicon, epoxy resin, or plastic material, or a material having high heat resistance and high light resistance . The above-mentioned silicon includes a white-based resin. The body may be formed of at least one member selected from the group consisting of an epoxy resin, a modified epoxy resin, a silicone resin, a modified silicone resin, an acrylic resin, and a urethane resin. For example, an epoxy resin comprising triglycidylisocyanurate, hydrogenated bisphenol A diglycidyl ether and the like and an acid comprising hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride and the like DBU (1,8-Diazabicyclo (5,4,0) undecene-7) as a curing accelerator in an epoxy resin, ethylene glycol, titanium oxide pigment and glass fiber as a cocatalyst were added, A solid epoxy resin composition that has been cured and B-staged can be used. However, the present invention is not limited thereto. The reflector 150 may be formed of an optical film, PET, PC, PVC resin, or the like.

When the surface of the reflective surface of the reflector 150 is a metal, a layer having at least one of aluminum, chromium, silver, barium sulfate, or an alloy thereof may be formed. The metal layer may be a layer coated with a material different from that of the reflector 150. As another example, the reflector 150 may be filled with the reflector material at the bottom and the air gap is not limited thereto.

14 is another example of a lighting module in the lighting device of Fig.

Referring to FIG. 14, a lower portion of the reflector 150 may be disposed in an open region 201A where a part of the substrate 201 is opened. The depth K1 of the open region 201A may be equal to or greater than the thickness of the reflector 150. [ The lower end upper surface 153A of the reflector 150 may be disposed on the same line as the upper surface of the substrate 201 or may be disposed lower than the light emitting device 100. [ This is because most of the light emitted from the light emitting device 100 can be irradiated to the lower region of the reflector 150 because the thickness of the light emitting device 100 is low and the size is small. In order to solve this problem, the lower surface of the upper surface of the reflector 150 is lower than the upper surface of the substrate 201, so that the light emitted from the light emitting device 100 is incident in the direction of the center of the reflector 150 . Further, the optical axis of the light emitting device 100 may be located at a higher position as compared with the third embodiment. Accordingly, the incident efficiency of the light incident on the reflector 150 is increased, and the uniformity of the light can be improved.

Fig. 15 is another example of the lighting module of the lighting device of Fig.

Referring to FIG. 15, the lower upper surface 153A of the reflector 150 may be disposed on the upper surface of the substrate 201 in the illumination module. The substrate 201 includes a mounting portion 201B having the light emitting device 100 disposed thereon and the mounting portion 201B may protrude from the upper surface of the substrate 201 at a predetermined height K2. The height K2 of the mounting portion 201B may be set to be in a range of one time or more, for example, 1 to 5 times the thickness of the light emitting device 100. [ The height K2 of the mounting portion 201B may be equal to or greater than the thickness of the reflector 150. [ Accordingly, the optical axis of the light emitting device 100 can be disposed adjacent to the center of the reflector 150, thereby improving the incidence efficiency of light and improving the uniformity of light. And the light incident at the upward / downward angle of light of the light emitting device 100 can be received uniformly. Here, the material of the mounting part 201B may be a structure protruding from the substrate 201, or protruding from the heat radiating plate or the housing, but the present invention is not limited thereto.

The luminous intensity emitted from each reflector of such a lighting device may be as shown in Fig. 22, and the external light uniformity is set to be the same as the luminous intensity distribution of the light distribution of the center HV side, the left side H- 30L or the right side H- Lt; / RTI > Where H is the horizontal direction, V is the vertical direction, 30L is the distribution measured in the left 30 degree region, and 30R is the distribution measured in the right 30 degree region. 22 and 23, the planar light source may be provided in the form of a linear light source having a constant width. The illumination device according to the embodiment is applicable to various vehicle lighting devices and traffic lights such as a head lamp, a car light, a side mirror, a fog lamp, a tail lamp, a stop lamp, Can be applied.

16 is a plan view of the light emitting device according to the embodiment, FIG. 17 is a sectional view of the light emitting device of FIG. 16 taken along the line AA, FIG. 18 is a front view of the light emitting device of FIG. Fig.

16 and 17, the light emitting device 100 includes a body 10 having a cavity 20, a plurality of lead frames 30 and 40 in the cavity 20, and a plurality of lead frames 30 , 40) disposed on at least one of the light emitting chip (101). The light emitting device 100 may be implemented as a side emitting type package.

The length D1 of the light emitting device 100 in the direction of the first axis X may be three times or more than four times the thickness T1 of the direction of the second axis Y. [ The length D1 in the direction of the first axis X may be in the range of 2.5 mm or more, for example, 2.7 mm to 4.5 mm. When the light emitting devices 100 are arranged in the direction of the first axis X by providing the length D1 of the light emitting device 100 in the first axis X direction longer, You can reduce the number. The light emitting device 100 can provide a relatively thin thickness T1, thereby reducing the thickness of the light unit having the light emitting device 100. The thickness T1 of the light emitting device 100 may be 2 mm or less.

The length D1 of the light emitting device 100 along the first axis X may be greater than the length D2 of the body 10. The thickness T1 may be a thickness of the body 10, May be the same as the thickness in the second axial direction of the base 10. The length D2 of the body 10 may be three times or more the thickness of the body 10.

The body 10 includes a first body 10A having a cavity 20 in which lead frames 30 and 40 are exposed at the bottom and a second body 10B supporting the first body 10A . The first body 10A may be an upper body or a front body, and the second body 10B may be a lower body or a rear body. The first body 10A may be a front region based on the lead frames 30 and 40 and the second body 10B may be a rear region based on the lead frames 30 and 40. [ The first and second bodies 10A and 10B may be integrally formed. A plurality of lead frames 30 and 40 such as a first lead frame 30 and a second lead frame 40 are coupled to the body 10.

The body 10 may be formed of an insulating material. The body 10 may be formed of a reflective material. For the wavelength emitted from the light emitting chip, the body 10 may be formed of a material having a reflectance higher than that of a material such as a reflectance of 70% or more. When the reflectance of the body 10 is 70% or more, the body 10 may be defined as a non-transparent material or a reflective material. The body 10 may be formed of a resin-based insulating material, for example, a resin material such as polyphthalamide (PPA). The body 10 may be formed of a thermosetting resin including a silicon-based, epoxy-based, or plastic material, or a material having high heat resistance and high light resistance. The body 10 includes a white-based resin. Inside the body 10, an acid anhydride, an antioxidant, a release agent, a light reflector, an inorganic filler, a curing catalyst, a light stabilizer, a lubricant, and titanium dioxide may be selectively added. . The body 10 may be formed of at least one member selected from the group consisting of an epoxy resin, a modified epoxy resin, a silicone resin, a modified silicone resin, an acrylic resin, and a urethane resin. For example, an epoxy resin comprising triglycidylisocyanurate, hydrogenated bisphenol A diglycidyl ether and the like and an acid comprising hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride and the like DBU (1,8-Diazabicyclo (5,4,0) undecene-7) as a curing accelerator in an epoxy resin, ethylene glycol, titanium oxide pigment and glass fiber as a cocatalyst were added, A solid epoxy resin composition that has been cured and B-staged can be used. However, the present invention is not limited thereto. The body 10 may be suitably mixed with at least one selected from the group consisting of a diffusing agent, a pigment, a fluorescent material, a reflective material, a light shielding material, a light stabilizer, and a lubricant to the thermosetting resin.

The body 10 may include a resin material to which a reflective material such as a metal oxide is added, and the metal oxide may include at least one of TiO ₂ , SiO ₂ , and Al ₂ O ₃ . Such a body 10 can effectively reflect incident light. As another example, the body 10 may be formed of a transparent resin material or a resin material having a phosphor for changing the wavelength of incident light.

The side surface of the body 10 includes a first side surface portion 11 and a second side surface portion 12 opposite to the first side surface portion 11 and adjacent to the first and second side surfaces 11 and 12, And third and fourth side portions 13 and 14 arranged. The first and second side portions 11 and 12 correspond to each other with respect to the second axis Y and the third and fourth side portions 13 and 14 correspond to each other with respect to the first axis X direction . The first side portion 11 may be the bottom of the body 10 and the second side portion 12 may be the upper surface of the body 10. The first and second side portions 11, 10 may be a long side having a length D2 and the third and fourth side surfaces 13 and 14 may be a short side having a thickness T2 smaller than the thickness T1 of the body 10. [ . The first side portion 11 of the body 10 may be a side surface corresponding to the circuit board.

The body 10 may include a front portion 15 and a rear portion 16. The front portion 15 may be a surface on which the cavity 20 is disposed and a surface on which light is emitted. The rear portion 16 may be the opposite side of the front portion 15. The rear portion 16 includes a first rear portion 16A and a second rear portion 16B and includes a gate portion 16C between the first rear portion 16A and the second rear portion 16B . The gate portion 16C may be recessed in the cavity direction between the first and second rear portions 16A and 16B with respect to the first and second rear portions 16A and 16B.

The first lead frame 30 includes a first lead portion 31 disposed at the bottom of the cavity 20 and a second lead portion 31 located at the first outer side region 11A and 11C of the first side portion 11 of the body 10 And a first heat dissipating unit 33 disposed on the third side surface 13 of the body 10. The first heat dissipating unit 33 includes a first bonding unit 32 and a first heat dissipating unit 33 disposed on the third side surface 13 of the body 10. [ The first bonding part 32 is bent in the body 10 from the first lead part 31 and protruded to the first side part 11 and the first heat radiating part 33 is protruded toward the first side part 11, And can be bent from the bonding portion 32. The first outer side regions 11A and 11C of the first side portion 11 may be a region adjacent to the third side portion 13 of the body 10. [

The second lead frame 40 includes a second lead portion 41 disposed on the bottom of the cavity 20 and a second lead portion 41 disposed on the second outer side regions 11B and 11D of the first side portion 11 of the body 10. [ And a second heat dissipation unit 43 disposed on the fourth side surface 14 of the body 10. [ The second bonding portion 42 may be bent from the second lead portion 41 in the body 10 and the second heat dissipating portion 43 may be bent from the second bonding portion 42 . The second outer regions 11B and 11D of the first side portion 11 may be regions adjacent to the fourth side portion 14 of the body 10.

The gap portion 17 between the first and second lead portions 31 and 41 may be formed of the material of the body 10 and may be the same horizontal surface or protruding as the bottom of the cavity 20, It is not limited thereto. The first outer areas 11A and 11C and the second outer areas 11B and 11D may have inclined areas 11A and 11B and flat areas 11C and 11D and the inclined areas 11A and 11B The first and second bonding portions 32 and 42 of the first and second lead frames 30 and 40 may protrude through the first and second lead frames 30 and 40. However,

The light emitting chip 71 may be disposed on the first lead portion 31 of the first lead frame 30 and the wires 72 and 73 may be connected to the first and second lead portions 31 and 41. [ Or may be connected to the first lead portion 31 with an adhesive and connected to the second lead portion 41 with a wire. The light emitting chip 71 may be a horizontal chip, a vertical chip, or a chip having a via structure. The light emitting chip 71 may be mounted in a flip chip manner. The light emitting chip 71 can selectively emit light within a wavelength range of ultraviolet rays to visible rays. The light emitting chip 71 may emit ultraviolet light or a blue peak wavelength, for example. The light emitting chip 71 may include at least one of a group II-VI compound and a group III-V compound. The light emitting chip 71 may be formed of a compound selected from the group consisting of GaN, AlGaN, InGaN, AlInGaN, GaP, AlN, GaAs, AlGaAs, InP and mixtures thereof.

The first, second, third, and fourth inner side surfaces 21, 22, 23, 24 disposed around the cavity 20 are formed on the upper surface of the lead frames 30, As shown in FIG. A first inner side surface 21 adjacent to the first side surface portion 11 and a second inner side surface 22 adjacent to the second side surface portion 12 are inclined at an angle with respect to the bottom of the cavity 20, The third inner side surface 23 adjacent to the three side surfaces 13 and the fourth inner side surface 14 adjacent to the fourth side surface portion 14 are inclined and the inclination angle of the first and second inner surfaces 21, Can be inclined at a smaller angle. Accordingly, the first and second inner side surfaces 21 and 22 reflect the progress of the incident light toward the second axis Y, and the third and fourth inner side surfaces 23 and 24 reflect the incident light Can be diffused in the direction of the first axis (X).

The inner side surfaces 21, 22, 23 and 24 of the cavity 20 may have a vertically curved region 25 from the front surface portion 15 of the body 10. The stepped region 25 may be disposed between the front face portion 15 and the inner side faces 21, 22, 23, 24 of the body 10 in a stepped manner. The stepped region 25 may control the directivity of the light emitted through the cavity 20.

17, the depth H2 of the cavity 20 may be less than 1/3 of the width H1 of the body 10, for example, in the range of 0.3 mm +/- 0.05 mm. When the depth H2 of the cavity 20 is less than the above range, it is difficult to control the directivity angle of the light. When the depth H2 is above the range, the width H1 of the body 10 increases and the light directing angle becomes narrow.

The width H1 of the body 10 may be a distance between the front portion 15 and the rear portion 16 of the body 10. [ The width H2 of the body 10 may be greater than the thickness T1 of the body 10 and the difference between the width H2 and the thickness T1 of the body 10 may be 0.05 mm or more, And 0.05 mm to 0.5 mm. When the thickness (T1) of the body 10 is relatively thick, the thickness of the light unit can be increased, and if the thickness is thin, the heat radiation area of the lead frames 30, Can be reduced.

The third and fourth side portions 13 and 14 of the body 10 may have inwardly recessed portions 35 and 45 and the recessed portions 35 and 45 may be formed in the body 10 Fingers supporting the body 10 may be inserted. The recesses 35 and 45 may be disposed on an extension line where the first and second lead portions 31 and 41 of the first and second lead frames 30 and 40 extend horizontally. The recesses 35 and 45 may be spaced apart from the first and second lead portions 31 and 41. The depth of the recesses 35 and 45 may be such that a portion of the recesses 35 and 45 may be vertically overlapped with a portion of the cavity 20, And is not limited thereto.

The rear storage areas of the third and fourth side surfaces 13 and 14 of the body 10 include first areas 13A and 14A inclined from the third side surface part 13 and the fourth side surface part 14, And second regions 13B and 14B inclined from the first regions 13A and 14A.

The light emitting chips 101 disposed in the cavity 20 of the light emitting device 100 according to the embodiment may be arranged in one or more. The light emitting chip 101 may be selected from, for example, a red LED chip, a blue LED chip, a green LED chip, and a yellow green LED chip.

A molding member 81 is disposed in the cavity 20 of the body 11 and the molding member 81 includes a light transmitting resin such as silicone or epoxy and may be formed as a single layer or a multilayer. The phosphor may include a phosphor for changing the wavelength of light emitted from the molding member 81 or the light emitting chip 71. The phosphor may excite a part of the light emitted from the light emitting chip 71, And is emitted as light. The phosphors may be selectively formed from quantum dots, YAG, TAG, silicate, nitride, and oxy-nitride materials. The phosphor may include at least one of a red phosphor, a yellow phosphor, and a green phosphor, but the present invention is not limited thereto. The surface of the molding member 61 may be formed in a flat shape, a concave shape, a convex shape, or the like, but is not limited thereto. As another example, a translucent film having a phosphor may be disposed on the cavity 20, but the present invention is not limited thereto.

A lens may be further formed on the body 10 and the lens may include a concave or convex lens structure to control the light distribution of the light emitted by the light emitting device 100 .

A semiconductor device such as a light receiving element or a protection element may be mounted on the body 10 or any one of the lead frames. The protection element may be implemented as a thyristor, a zener diode, or a TVS (Transient Voltage Suppression) The Zener diode protects the light emitting chip from electrostatic discharge (ESD).

Referring to FIGS. 18 and 19, at least one or more light emitting devices 100 are disposed on a substrate 201. The substrate 201 includes a board on which a circuit pattern is printed on an insulating layer. For example, a resin-based printed circuit board (PCB), a metal core PCB, a flexible printed circuit board, PCB, ceramic PCB, FR-4 substrate.

The first and second lead portions 33 and 43 of the light emitting device 100 are bonded to the electrode patterns 213 and 215 of the substrate 201 with solder or conductive tape as conductive bonding members 203 and 205.

20 and 21 are views showing a vehicle lamp.

20 and 21, the taillight 800 in the vehicle 900 includes a first lamp unit 812, a second lamp unit 814, a third lamp unit 816, and a housing 810 can do. Here, the first lamp unit 812 may be a light source for serving as a turn signal lamp, the second lamp unit 814 may be a light source for acting as a light source, and the third lamp unit 816 may be a light source for acting as a brake lamp But it is not limited thereto.

The housing 810 accommodates the first to third lamp units 812, 814, and 816, and may be made of a light transmitting material. At this time, the housing 810 may have a curvature according to the design of the vehicle body, and the first to third lamp units 812, 814, and 816 may implement a surface light source having a curved surface according to the shape of the housing 810 . As shown in FIG. 28, when the lamp unit is applied to a tail lamp of a vehicle, a braking lamp, or a turn signal lamp, it can be applied to a turn signal lamp of the vehicle.

Here, as a safety standard for a vehicle lamp, when measuring with reference to the front light, a tail light or the like has a light distribution standard of 4 to 5 candelas (cd), and a brake light has a light distribution standard of 60 to 80 candelas (cd) Range. The lighting module according to the embodiment can be provided with a luminous intensity within the vehicle safety standard of the lamp such as the braking lamp, the tail, and the like, since it is luminous with luminous flux having a candelas higher than a vehicle safety standard, as shown in Figs. 22 and 23. Fig.

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

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It can be seen 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.

110, 120, 150:
112, 114, 122, 124, 151:
201: substrate
230: optical member
300: housing
400, 400A, 400B, 401: Lighting module

Claims (15)

Board;
A plurality of light emitting elements disposed on the substrate and having a light emitting surface adjacent to an upper surface of the substrate; And
And a reflector disposed on the light output side of each of the plurality of light emitting elements,
Wherein the reflector includes a reflective surface corresponding to a light exit surface of each of the light emitting elements,
Wherein the reflective surface includes a plurality of light emitting cells arranged in a longitudinal direction and a bridge portion having a width smaller than the longitudinal width of the light emitting cells between the plurality of light emitting cells,
Wherein each of the light emitting cells includes a convex portion adjacent to the light emitting element and a concave portion disposed between the convex portion and the bridge portion,
Wherein the reflective surface has a concave negative curvature lower than a line segment connecting both edges and has a gradually higher height as it is away from the light emitting element. The lighting module according to claim 1, wherein an interval between both edges of the reflective surface is gradually widened away from the light emitting element. The lighting module of claim 1, wherein the bridge unit has a number smaller than the number of the light emitting cells and connects convex parts and concave parts of different reflection cells. The lighting module according to any one of claims 1 to 3, wherein a lower portion of the reflector includes a concave groove in which a region adjacent to the light emitting element is recessed. 5. The illumination module of claim 4, wherein a lower end of the reflector is spaced apart from the light emitting element. The lighting module according to any one of claims 1 to 3, wherein an interval between the light emitting elements is equal to or wider than an interval of the reflectors disposed on the light emitting side of each of the light emitting elements. The lighting module according to any one of claims 1 to 3, wherein a part of the reflector is disposed on the light emitting element disposed between the reflectors. The lighting module according to any one of claims 1 to 3, wherein the lower end upper surface of the reflector disposed on the light output side of each of the light emitting elements is disposed at the same or lower than the upper surface of the substrate. The lighting module according to any one of claims 1 to 3, wherein each of the light emitting elements is disposed higher than an upper surface of the substrate. The lighting module according to claim 2, wherein a convex portion of each reflective cell is disposed closer to the light emitting element than the concave portion. The lighting module according to any one of claims 1 to 3, wherein the reflectors disposed on the light emission side of each of the light emitting elements are connected to each other. The lighting module according to any one of claims 1 to 3, comprising a heat radiation plate having a plurality of heat radiation fins disposed under the substrate. An illumination module having a substrate, a plurality of light emitting elements on the substrate, and a reflector disposed on the light emitting side of the plurality of light emitting elements;
A housing having a storage space in which an upper portion thereof is opened and in which the lighting module is disposed; And
And an optical member disposed on the illumination module,
The reflector being disposed on the substrate,
Wherein the reflector includes a reflective surface corresponding to a light exit surface of each of the light emitting elements,
Wherein the reflective surface includes a plurality of light emitting cells arranged in a longitudinal direction and a bridge portion having a width smaller than the longitudinal width of the light emitting cells between the plurality of light emitting cells,
Wherein each of the light emitting cells includes a convex portion adjacent to the light emitting element and a concave portion disposed between the convex portion and the bridge portion,
Wherein the reflective surface has a concave negative curvature lower than a line segment connecting both edges and has a gradually higher height as the distance from the light emitting element is increased. 14. The method of claim 13,
And a stepped structure in which the optical member is disposed around an upper portion of the housing, and an engaging hole for fixing a part of the reflector to a lower portion of the housing. 14. The lighting device according to claim 13, wherein the reflectors arranged on the light emission side of the plurality of light emitting elements are arranged in a straight line, a curved line or an angular shape.

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