Optical assembly and rearview mirror assembly including the same

Abstract

An optical assembly according to an embodiment includes a housing having a sloped bottom surface, a plurality of inner surfaces around the outside of the bottom surface, and an accommodating space with an open top; and a lighting module arranged on the sloped bottom surface. The lighting module includes a substrate arranged at an angle on the sloped bottom surface, at least one light-emitting element arranged on the substrate, and a resin layer sealing the light-emitting element and the substrate. The upper surface of the resin layer diffuses light emitted from the light-emitting element, and the plurality of inner surfaces include a first inner surface adjacent to the light-emitting element, a second inner surface facing the first inner surface, and third and fourth inner surfaces facing each other and arranged between the first and second inner surfaces. The height between the bottom surface of the housing and the upper surface of the housing increases as it goes from the first inner surface toward the second inner surface and decreases as it goes from the third inner surface toward the fourth inner surface.

Description

[Technical field]

[0001] The embodiment relates to a lighting module having a light emitting element and providing a surface light source.

[0002] The embodiment relates to an optical assembly having an illumination module.

[0003] The embodiment relates to a rearview mirror assembly that includes an optical assembly. [Background technology]

[0004] Typical lighting applications include backlighting for displays and signs, as well as vehicle lights.

[0005] Light emitting devices, such as light emitting diodes (LEDs), have advantages such as low power consumption, semi-permanent life, fast response speed, safety, and environmental friendliness compared to existing light sources such as fluorescent lamps and incandescent lamps. Such light emitting diodes are applied to various optical assemblies such as various display devices, indoor lights, and outdoor lights.

[0006] Recently, lamps using light-emitting diodes as vehicle light sources have been proposed. For example, light-emitting diodes are used in vehicle headlamps, taillamps, turn signals, etc. Light-emitting diodes are small in size, allowing greater freedom in lamp design. Compared to incandescent lamps, light-emitting diodes are advantageous in that they consume less power and have a semi-permanent lifespan.

[0007] However, since the emission angle of light emitted from a light emitting diode is small, when the light emitting diode is used as a vehicle lamp, there is a demand for increasing the light emitting area of ​​the lamp using the light emitting diode.

[0008] As an example, the LED can be applied to a blind spot detection (BSD) system. The BSD system is a vehicle sensor device that detects other vehicles located behind and beside the driver and provides the driver with information about the other vehicles visually, audibly, tactilely, etc. In such a BSD system, the LED is disposed in the side mirror or A-pillar area of ​​the vehicle to visually provide the driver with rear side information.

[0009] However, since light is emitted from the light emitting diode in various directions, visual information is not effectively provided to the driver, and the light emitted from the light emitting diode may be emitted toward the driver of another vehicle, obstructing his / her view and possibly causing an accident.

[0010] Therefore, there is a need for a new optical assembly and rear side warning system that can solve the above-mentioned problems. Summary of the Invention [Problem to be solved by the invention]

[0011] The embodiments are intended to provide an optical assembly and a rear-side warning device that can improve the luminous intensity of a surface light source.

[0012] Further, the embodiments provide an optical assembly and a rear-side warning device that can improve the uniformity of a surface light source.

[0013] Also, the embodiments seek to provide an optical assembly and a rear-side warning device that can control the light emission direction.

[0014] In addition, the embodiments provide an optical assembly and a rear side warning device that can control the brightness value of light emitted toward the driver and the brightness value of light emitted toward vehicles located to the side and rear of the driver. [Means for solving the problem]

[0015] An optical assembly according to an embodiment includes a housing having a slanted bottom surface, a plurality of inner surfaces around the outer side of the bottom surface, and an accommodation space with an open top, and a lighting module arranged on the slanted bottom surface, the lighting module including a substrate arranged to be inclined on the slanted bottom surface, at least one light-emitting element arranged on the substrate, and a resin layer sealing the light-emitting element and the substrate, the upper surface of the resin layer diffusing light emitted from the light-emitting element, the plurality of inner surfaces including a first inner surface adjacent to the light-emitting element, a second inner surface facing the first inner surface, and third and fourth inner surfaces facing each other and arranged between the first and second inner surfaces, the height between the bottom surface of the housing and the upper surface of the housing increasing as it goes from the first inner surface toward the second inner surface and decreasing as it goes from the third inner surface toward the fourth inner surface.

[0016] In addition, a rearview mirror assembly according to an embodiment includes a blocking member disposed on an optical assembly and including an opening region, and a mirror member disposed on the blocking member, the optical assembly including a housing having a slanted bottom surface, a plurality of inner sides around the outer side of the bottom surface, and an accommodation space with an open top, and a lighting module disposed on the slanted bottom surface, the lighting module including a substrate disposed so as to be inclined on the slanted bottom surface, at least one light-emitting element disposed on the substrate, and a resin layer sealing the light-emitting element and the substrate, the upper surface of the resin layer diffusing light emitted from the light-emitting element to emit light, the plurality of inner sides including a first inner side adjacent to the light-emitting element, a second inner side facing the first inner side, and third and fourth inner sides facing each other disposed between the first and second inner sides, the height between the bottom surface of the housing and the upper surface of the housing increasing in a direction from the first inner side to the second inner side and decreasing in a direction from the third inner side to the fourth inner side. Effect of the Invention

[0017] The optical assembly according to the embodiment may emit light as a surface light source and have improved luminous intensity and improved light uniformity. In addition, the optical assembly may prevent hot spots from being formed and minimize light loss.

[0018] In addition, the lighting module of the optical assembly according to the embodiment is disposed to be tilted at a set tilt angle, so that the optical assembly can control the emission direction of the light emitted from the lighting module and the brightness value according to the emission direction.

[0019] In addition, the rearview mirror assembly according to the embodiment can minimize light loss and maximize light emitted through a mirror member. In addition, the rearview mirror assembly can control an emission direction of light emitted from the optical assembly and a brightness value of the light according to the emission direction. Specifically, the rearview mirror assembly can control the emission direction of light and the brightness value of the light by an optical assembly arranged to be inclined at a set inclination angle. As a result, the rearview mirror assembly can provide light with high brightness to the driver, and the driver can effectively view the logo and / or icon of the indicator. In addition, the rearview mirror assembly can provide light with relatively low brightness to other vehicles located to the rear and sides of the driver's vehicle, minimizing or preventing the driver of the other vehicle from being disturbed by the light. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is an exploded perspective view of an optical assembly according to an embodiment. [Diagram 2] FIG. 2 is a top view of an optical assembly according to an embodiment. [Diagram 3] FIG. 3 is a side view of a housing according to the embodiment. [Figure 4] FIG. 4 is a side view of an optical assembly according to an embodiment. [Diagram 5]FIG. 5 is a top view of a lighting module according to an embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing a cross section taken along line AA' of FIG. [Figure 7] FIG. 7 is an enlarged view of the A1 region in FIG. [Figure 8] FIG. 8 is another cross-sectional view illustrating the cross section AA' of FIG. [Figure 9] FIG. 9 is an enlarged view of the A2 region in FIG. [Figure 10] FIG. 10 is another cross-sectional view illustrating the cross section AA' of FIG. [Figure 11] FIG. 11 is an enlarged view of the A3 region in FIG. [Figure 12] FIG. 12 is another cross-sectional view illustrating the cross section AA' of FIG. [Figure 13] FIG. 13 is a front view showing a light emitting element on a substrate in a lighting module according to an embodiment. [Figure 14] FIG. 14 is a side view of the light emitting device of FIG. [Figure 15] FIG. 15 is an exploded perspective view of a rearview mirror assembly according to an embodiment. [Figure 16] FIG. 16 is a cross-sectional view of a rearview mirror assembly according to an embodiment. [Figure 17] FIG. 17 is a top view of the blocking member according to the embodiment. [Figure 18] FIG. 18 is a diagram illustrating an emission angle of light emitted from a rearview mirror assembly according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] The technical idea of ​​the present invention is not limited to some of the embodiments described, and may be embodied in various different forms, and one or more of the components of the embodiments may be selectively combined or substituted within the scope of the technical idea of ​​the present invention. Furthermore, the terms (including technical and scientific terms) used in the embodiments of the present invention are interpreted as meanings that are generally understandable to those skilled in the art to which the present invention belongs, unless otherwise specified, and commonly used terms such as terms defined in dictionaries may be interpreted in consideration of the contextual meaning of the relevant technology. Furthermore, the terms used in the embodiments of the present invention are intended to describe the embodiments, and are not intended to limit the present invention. In this specification, the singular form may include the plural form unless otherwise specified, and when it is described as "at least one (or more) of A and B, C," it may include one or more of all combinations that can be combined with A, B, and C. Furthermore, in describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. Such terms are used to distinguish the components from other components, and the essence or order of the components is not limited by the terms. When a component is described as being "coupled," "coupled," or "connected" to another component, this includes both cases where the component is directly coupled or connected to the other component, and cases where further components are "coupled," "coupled," or "connected" between the components. When a component is described as being formed or disposed "above or below" another component, "above or below" does not only include cases where the two components are in direct contact with each other, but also cases where one or more further components are formed or disposed between the two components. When a component is described as being "above or below," this can include not only the upper direction but also the lower direction based on one component.

[0023] The optical assembly according to the present invention can be applied to various lamp devices requiring illumination, such as vehicle lamps, household optical assemblies, and industrial optical assemblies. For example, when applied to vehicle lamps, the optical assembly can be applied to headlamps, side mirror lights, side maker lights, fog lamps, tail lamps, brake lights, daytime running lights, vehicle interior lighting, door scuffs, rear combination lamps, backup lamps, etc. When applied to vehicle lamps, the optical assembly can be applied to rear side assistance systems (BSDs) arranged on side mirrors or A-pillars, etc. In addition, the optical assembly according to the present invention can be applied to indoor and outdoor advertising devices, display devices, and various train fields, and can be applied to all lighting fields and advertising fields that are currently developed and commercialized or that can be realized through future technological development.

[0024] Fig. 1 is an exploded perspective view of an optical assembly according to an embodiment, Fig. 2 is a top view of the optical assembly according to an embodiment, Fig. 3 is a side view of a housing according to an embodiment, Fig. 4 is a side view of the optical assembly according to an embodiment, and Fig. 5 is a top view of a lighting module according to an embodiment.

[0025] Before describing FIGS. 1 to 5, an optical assembly according to an embodiment can be applied to left and right side mirrors of a vehicle to provide visual information to a driver of the vehicle.

[0026] 1 to 5, an optical assembly applied to a left side mirror adjacent to the driver's seat will be described. The optical assembly applied to a right side mirror adjacent to the passenger seat has the same shape and structure as the optical assembly applied to the driver's seat and is symmetrical to each other, so for convenience of explanation, the optical assembly disposed at the driver's seat will be mainly described.

[0027] 1 to 5, an optical assembly 10 according to an embodiment may include a housing 300, a lighting module 400, an optical member 500, and a cover member 600.

[0028] The housing 300 has an open side and includes an internal receiving space 305. The housing 300 can receive the lighting module 400, the optical member 500, and the cover member 600.

[0029] The housing 300 may include a material that has a certain reliability and is not damaged by heat and light emitted from the lighting module 400. For example, the housing 300 may include a resin material or a metal material. Specifically, the housing 300 may include at least one material selected from the group consisting of plastic, polypropylene (PP), polyethylene (PE), polycarbonate (PC), PBT (Polybutylene Terephthalate), ABS (Acrylonitrile Butadiene Styrene copolymer), POM (Poly Oxy Methylene, Polyacetal), PPO (Polyphenylene Oxide) resin, and modified PPO (Modified PPO) resin. In addition, the housing 300 may include at least one material selected from the group consisting of silver (Ag), copper (Cu), titanium (Ti), magnesium (Mg), chromium (Cr), molybdenum (Mo), nickel (Ni), aluminum (Al), stainless steel, and alloys including the above. When the housing 300 includes a metal material, the housing 300 can provide a heat dissipation path for the lighting module 400. Thus, the heat dissipation characteristics of the optical assembly 10 can be improved.

[0030] The housing 300 may include a material capable of absorbing the light emitted from the lighting module 400. In addition, a surface of the receiving space 305 of the housing 300 may absorb the light emitted from the lighting module 400. Specifically, the housing 300 or a surface material may have a light absorptance of 50% or more and a light reflectance of 50% or less. For example, the housing 300 may be provided in a color capable of absorbing the light emitted from the lighting module 400. Specifically, the material of the housing 300 or the surface of the receiving space 305 may include black. Thus, it is possible to prevent or minimize the reflection of the light emitted from the lighting module 400 on the bottom surface 310 and the inner surface 320 of the housing 300. Therefore, the light emitted from the lighting module 400 is emitted in a set direction.

[0031] The housing 300 may include a bottom surface 310 and an inner surface 320 defined by the receiving space 305 .

[0032] The bottom surface 310 of the housing 300 may have various shapes. Specifically, the bottom surface 310 of the housing 300 may have various shapes such as a polygon, a circle, an ellipse, etc., when viewed from a plane. As an example, the bottom surface 310 of the housing 300 may have a polygonal shape, for example, a hexagonal shape, as shown in FIG. 2.

[0033] The bottom surface 310 of the housing 300 may have an inclined shape. Specifically, the bottom surface 310 of the housing 300 may be inclined in one direction with respect to the top surface 301 of the housing 300.

[0034] The inner surface 320 of the housing 300 may include a plurality of inner surfaces. The inner surface 320 of the housing 300 may be perpendicular to the upper surface 301 of the housing 300. The inner surface 320 of the housing 300 may include a first inner surface IS1 and a second inner surface IS2 facing the first inner surface IS1. The inner surface 320 of the housing 300 may also include a third inner surface IS3 and a fourth inner surface IS4 disposed between the first and second inner surfaces IS1 and IS2. The inner surface 320 of the housing 300 may also include a fifth inner surface IS5 disposed between the second inner surface IS2 and the third inner surface IS3, and may also include a sixth inner surface IS6 disposed between the second inner surface IS2 and the fourth inner surface IS4.

[0035] At this time, the height between the bottom surface 310 of the housing 300 and the top surface 301 of the housing 300 may increase from the first inner side surface IS1 toward the second inner side surface IS2. Also, the height between the bottom surface 310 of the housing 300 and the top surface 301 of the housing 300 may decrease from the third inner side surface IS3 toward the fourth inner side surface IS4.

[0036] That is, the bottom surface 310 of the housing 300 is inclined at a first inclination angle with respect to the top surface of the housing 300 in the direction of the second inner surface IS2. a1 It can be tilted at.

[0037] The first tilt angle a1 The first inclination angle may be about 15 degrees to about 40 degrees. a1 The first inclination angle may be about 20 degrees to about 35 degrees. a1 If the first tilt angle does not satisfy the above range, the light emitted from the lighting module 400 disposed on the bottom surface 310 may be emitted in an undesired direction. a1If the first tilt angle does not satisfy the above range, the brightness value of the light emitted in the direction where the user is located may be significantly low, and the brightness value of the light emitted in an undesired direction may be significantly high. a1 may be about 25 degrees to about 30 degrees.

[0038] In addition, the bottom surface 310 of the housing 300 may be inclined at a second inclination angle a2 with respect to the upper surface of the housing 300 in the direction of the fourth inner surface IS4.

[0039] The second inclination angle a2 may be about 15 degrees to about 40 degrees. Specifically, the second inclination angle a2 may be about 20 degrees to about 35 degrees. If the second inclination angle a2 does not satisfy the above-mentioned range, the light emitted from the lighting module 400 arranged on the bottom surface 310 may be emitted in an undesired direction. For example, if the second inclination angle a2 does not satisfy the above-mentioned range, the luminance value of the light emitted in the direction where the user is positioned may be significantly low, and the luminance value of the light emitted in the undesired direction may be significantly high. Preferably, the second inclination angle a2 may be about 25 degrees to about 30 degrees.

[0040] The bottom surface 310 of the housing 300 may have a shape inclined in the above-mentioned direction. Specifically, the height between the bottom surface 310 of the housing 300 and the upper surface of the housing 300 may have the lowest value at a first intersection point P1 defined as an intersection point of the first inner side surface IS1 and the fourth inner side surface IS4. Also, the height between the bottom surface 310 of the housing 300 and the upper surface of the housing 300 may have the highest value in an area adjacent to the fifth inner side surface IS5. That is, the bottom surface 310 of the housing 300 may have a shape inclined toward the fifth inner side surface IS5 at the first intersection point P1.

[0041] The lighting module 400 is disposed in the housing 300. The lighting module 400 is disposed in the receiving space 305 and disposed on a bottom surface 310 of the housing 300. The lighting module 400 has a uniform thickness and can emit light as a surface light source.

[0042] The lighting module 400 may be in direct contact with the bottom surface 310 of the housing 300. Also, the lighting module 400 may be in indirect contact with the bottom surface 310 of the housing 300 via an adhesive member (not shown) or the like.

[0043] The lighting module 400 may have a shape corresponding to the bottom surface 310 of the housing 300. For example, the planar shape of the lighting module 400 may have a shape corresponding to the bottom surface 310. This makes it possible to easily arrange the lighting module 400 in the receiving space 305.

[0044] The lighting module 400 may include a plurality of outer sides. For example, the lighting module 400 may include first to sixth side faces S1 to S6 corresponding to the first to sixth inner sides IS1 to IS6, respectively. The first to sixth side faces S1 to S6 may be side faces facing the first to sixth inner sides IS1 to IS6, respectively.

[0045] The lighting module 400 is disposed so as to be inclined on the bottom surface 310. For example, the lighting module 400 is disposed so as to be inclined with respect to the top surface 301 of the housing 300 at an inclination angle corresponding to the inclined bottom surface 310.

[0046] Accordingly, the height between the upper surface of the lighting module 400 and the upper surface 301 of the housing 300 may increase from the first side surface S1 to the second side surface S2. Also, the height between the upper surface of the lighting module 400 and the upper surface 301 of the housing 300 may decrease from the third side surface S3 to the fourth side surface S4.

[0047] That is, in the first side surface S1, the top surface and / or the bottom surface of the lighting module 400 is inclined at the first inclination angle with respect to the top surface of the housing 300 with respect to the direction of the second side surface S2. a1 In addition, the top and / or bottom surface of the lighting module 400 may be inclined at the second inclination angle a2 with respect to the top surface of the housing 300 in the third side surface S3 based on the direction of the fourth side surface S4.

[0048] Therefore, the lighting module 400 is disposed to be inclined within the housing 300. In this case, the height between the upper surface of the lighting module 400 and the upper surface of the housing 300 may have the lowest value at a second intersection point P2 defined as an intersection point of the first side surface S1 and the fourth side surface S4. Also, the height between the upper surface of the lighting module 400 and the upper surface of the housing 300 may have the highest value in an area adjacent to the fifth side surface S5. That is, the lighting module 400 may have a shape inclined toward the fifth side surface S5 at the second intersection point P2.

[0049] The lighting module 400 includes at least one light emitting device 100 and can emit light as a surface light source. The lighting module 400 can emit light toward the open upper portion of the housing 300.

[0050] The light emitting device 100 may be disposed in an area where the height difference with respect to the upper surface 301 of the housing 300 is relatively small, and may emit light in a direction toward an area where the height difference is relatively large. For example, the light emitting device 100 may be disposed adjacent to the first side surface S1, and may emit light in a direction toward the second side surface S2. Specifically, the distance between the light emitting device 100 and the first side surface S1 may be approximately 20% or less of the distance between the light emitting device 100 and the second side surface S2. In addition, the distance between the light emitting device 100 and the third side surface S3 may correspond to the distance between the light emitting device 100 and the fourth side surface S4.

[0051] The optical member 500 is disposed in the receiving space 305. The optical member 500 is disposed on the lighting module 400. The optical member 500 may be disposed in direct or indirect contact with an upper surface of the lighting module 400.

[0052] The optical member 500 may have a shape corresponding to that of the lighting module 400. Specifically, a lower surface of the optical member 500 may have a shape corresponding to an upper surface of the lighting module 400. Thus, the optical member 500 can be easily disposed in the receiving space 305 and can effectively control the light emitted from the lighting module 400.

[0053] The optical member 500 is disposed to be inclined above the lighting module 400. Specifically, the optical member 500 is disposed to be inclined at an inclination angle corresponding to the lighting module 400.

[0054] For example, the height between the upper surface of the optical member 500 and the upper surface 301 of the housing 300 may increase from the first inner side IS1 toward the second inner side IS2, and the height between the upper surface of the optical member 500 and the upper surface 301 of the housing 300 may decrease from the third inner side IS3 toward the fourth inner side IS4.

[0055] That is, the upper surface of the optical member 500 is inclined at the first inclination angle θ with respect to the upper surface of the housing 300 with respect to the first inner surface IS1 and the second inner surface IS2. a1In addition, with respect to the third inner side IS3 in the direction of the fourth inner side IS4, the upper surface of the optical member 500 may be inclined at the second inclination angle a2 with respect to the upper surface of the housing 300. Therefore, the optical member 500 is disposed to be inclined within the housing 300 due to the inclined bottom surface 310 and the lighting module 400. That is, the optical member 500 may have a shape inclined toward the fifth inner side IS5 at a first intersection P1 of the housing 300.

[0056] The optical member 500 may control light emitted from the lighting module 400. For example, the optical member 500 may include a prism sheet including linear prisms extending in one direction. Specifically, the optical member 500 may include a first optical member including linear prisms extending in one direction and a second optical member including linear prisms extending in another direction. Here, the other direction may be perpendicular to the one direction. The first and second optical members may collect light emitted from the lighting module 400 in different directions.

[0057] The cover member 600 is disposed within the receiving space 305. The cover member 600 is disposed on the optical member 500. The cover member 600 may be disposed in direct or indirect contact with an upper surface of the optical member 500.

[0058] The cover member 600 may have a shape corresponding to the accommodating space 305. For example, the planar shape of the cover member 600 may have a planar shape corresponding to the bottom surface 310 of the housing 300. Thus, the cover member 600 can be easily disposed and fixed in the accommodating space 305.

[0059] The upper surface of the cover member 600 may be provided as a flat plane. For example, the upper surface 301 of the housing 300 is provided as a flat plane, and the upper surface of the cover member 600 is disposed on the same plane as the upper surface 301 of the housing 300.

[0060] The cover member 600 may include an inclined surface. Specifically, a lower surface of the cover member 600 facing the optical member 500 may include an inclined surface corresponding to the lighting module 400 and / or the optical member 500.

[0061] Specifically, the thickness between the upper and lower surfaces of the cover member 600 may be increased from the first inner side surface IS1 toward the second inner side surface IS2, and the thickness between the upper and lower surfaces of the cover member 600 may be decreased from the third inner side surface IS3 toward the fourth inner side surface IS4.

[0062] That is, the lower surface of the cover member 600 is inclined at the first inclination angle with respect to the upper surface of the lighting module 400 with respect to the first inner surface IS1 and the second inner surface IS2. a1 In addition, the lower surface of the cover member 600 may be inclined at the second inclination angle a2 with respect to the upper surface of the cover member 600 based on the direction of the fourth inner side surface IS4 from the third inner side surface IS3. That is, the lower surface of the cover member 600 may have a shape inclined toward the fifth inner side surface IS5 at the first intersection point P1 of the housing 300.

[0063] Thus, the cover member 600 can cover one side of the opened housing 300. That is, the cover member 600 is disposed on the lighting module 400 and the optical member 500 to cover the components 400 and 500. Light emitted from the lighting module 400 is emitted toward the opened upper portion of the housing 300 through the optical member 500 and the cover member 600.

[0064] Fig. 6 is a cross-sectional view showing a cross section taken along line AA' of Fig. 5, and Fig. 7 is an enlarged view of an area A1 of Fig. 6. The lighting module 400 according to the embodiment will be described in more detail with reference to Figs. 6 and 7.

[0065] 6 and 7, the lighting module 400 may include a substrate 401, a light emitting device 100 disposed on the substrate 401, and a resin layer 420 that covers and seals the substrate 401 and the light emitting device 100. The lighting module 400 may also include a reflective member 410 disposed on the substrate 401.

[0066] The lighting module 400 may emit the light emitted from the light emitting device 100 as a surface light source. The lighting module 400 may be defined as a light emitting cell or a light source module. The lighting module 400 may include one light emitting cell or a plurality of light emitting cells on the substrate 401.

[0067] The substrate 401 may include a printed circuit board (PCB). The substrate 410 may include at least one of a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, or an FR-4 substrate. When the substrate 401 is a metal core PCB having a metal layer disposed on the bottom, the heat dissipation efficiency of the light emitting device 100 is improved.

[0068] The substrate 401 is electrically connected to the light emitting device 100. The substrate 401 includes a wiring layer (not shown) on an upper portion thereof, and the wiring layer is electrically connected to the light emitting device 100. When a plurality of the light emitting devices 100 are arranged on the substrate 401, the plurality of light emitting devices 100 may be connected in series, parallel, or series-parallel by the wiring layer. The substrate 401 may function as a base member or a support member disposed under the light emitting device 100 and the resin layer 420.

[0069] The upper surface of the substrate 401 may have an XY plane. The upper surface of the substrate 401 may be a flat plane or a curved surface. The thickness of the substrate 401 may be a height in a Z direction. Here, the X direction may be a first direction, and the Y direction may be a second direction. The Z direction may be a direction perpendicular to the first and second directions. The length of the substrate 401 in the first direction may be greater than the width in the second direction. The length of the substrate 401 in the first direction may be more than twice, for example more than four times, the width in the second direction.

[0070] The substrate 401 may include a light-transmitting material through which light can be transmitted through the upper and lower surfaces of the substrate 401. The light-transmitting material may include at least one of PET (Polyethylene terephthalate), PS (Polystyrene), and PI (Polyimide).

[0071] The light emitting device 100 is disposed on the substrate 401 and can emit light in a first direction. That is, the light emitting device 100 can emit light in a direction toward a second side surface S2 of the lighting module 400.

[0072] The light emitting device 100 may have an emission surface 81 from which light is emitted, and the emission surface 81 may be disposed, for example, in a third direction or vertically relative to a horizontal upper surface of the substrate 401. The emission surface 81 may be a vertical plane or may include a concave or convex surface.

[0073] 13 and 14, the light emitting device 100 is disposed on, for example, the substrate 401 and is electrically connected to pads 403 and 405 of the substrate 401 by conductive joint members 203 and 205. The conductive joint members 203 and 205 may be made of a solder material or a metal material.

[0074] The light emitting device 100 is disposed in a relatively upper region of the inclined bottom surface 310 of the housing 300. The light emitting device 100 may emit light in the first direction, for example, from the relatively inclined upper region to the relatively inclined lower region.

[0075] The optical axis of the light emitting device 100 may correspond to the bottom surface 310. Specifically, the optical axis of the light emitting device 100 is parallel to the bottom surface 310 of the housing 300 and has the first inclination angle with the upper surface of the housing 300. a1 may have the following structure:

[0076] One or more light emitting devices 100 are disposed on the substrate 401. As an example, one light emitting device 100 emitting light in the first direction is disposed on the substrate 401 as shown in the drawing.

[0077] As another example, although not shown in the drawings, a plurality of light emitting elements 100 emitting light in the first direction may be arranged in at least one row, or two or more rows, in the second direction on the substrate 401. Also, the plurality of light emitting elements 100 may be arranged in at least one row, or two or more rows, in the first direction. Also, the plurality of light emitting elements 100 may be arranged in different directions on the substrate 401.

[0078] The light emitting device 100 may include a package in which a light emitting chip is packaged as an element having a light emitting diode (LED). The light emitting chip 71 may emit at least one of blue, red, green, ultraviolet (UV) and infrared light, and the light emitting device 100 may emit at least one of white, blue, red, green and infrared light. The light emitting device 100 may be a side view type in which a bottom portion is electrically connected to the substrate 401, but is not limited thereto. As another example, the light emitting device 100 may be an LED chip, but is not limited thereto.

[0079] The light emitting surface 81 of the light emitting device 100 is disposed on at least one side surface other than the top surface of the light emitting device 100. The light emitting surface 81 may be a side surface of the light emitting device 100 adjacent to the substrate 401, for example, a side surface adjacent to the top surface of the substrate 401. The light emitting surface 81 is disposed on a side surface between the bottom surface and the top surface of the light emitting device 100, and emits light with the highest intensity in the first direction. The light emitting surface 81 of the light emitting device 100 may be a surface adjacent to the reflective member 410, or a surface perpendicular to the top surface of the substrate 401 and the top surface of the reflective member 410.

[0080] The light emitted through the emission surface 81 of the light emitting element 100 may travel in a direction parallel to the upper surface of the substrate 401, may be reflected by the reflecting member 410, or may travel toward the upper surface of the resin layer 420. The thickness of the light emitting element 100 may be, for example, 3 mm or less, for example, in the range of 0.8 mm to 2 mm. The length of the light emitting element 100 in the second direction may be 1.5 times or more the thickness of the light emitting element 100, but is not limited thereto. Such a light emitting element 100 may have a light directivity angle in the ±Y direction wider than the light directivity angle in the ±Z direction. The light directivity angle of the light emitting element 100 in the second direction may be 110 degrees or more, for example, 120 degrees to 160 degrees or 140 degrees or more. The light directivity angle of the light emitting element 100 in the third direction may be 110 degrees or more, for example, in the range of 120 degrees to 140 degrees.

[0081] The reflective member 410 is disposed between the substrate 401 and the resin layer 420. The reflective member 410 is not provided in the form of a film having a metallic or non-metallic material. The reflective member 410 may be attached to an upper surface of the substrate 401. The reflective member 410 may have an area smaller than an area of ​​an upper surface of the substrate 401. The reflective member 410 may be spaced apart from an edge of the substrate 401, and the resin layer 420 may be attached to the substrate 401 in the spaced apart area. In this case, it is possible to prevent the edge portion of the reflective member 410 from peeling off.

[0082] The reflective member 410 may include an opening 417 in which the lower portion of the light emitting device 100 is disposed. In the opening 417 of the reflective member 410, the upper surface of the substrate 401 is exposed and a portion in which the lower portion of the light emitting device 100 is bonded is disposed. The size of the opening 417 may be the same as or larger than the size of the light emitting device 100, but is not limited thereto. The reflective member 410 may contact the upper surface of the substrate 401 or be bonded between the resin layer 420 and the substrate 401, but is not limited thereto. Here, the reflective member 410 may be removed when the upper surface of the substrate 401 is coated with a highly reflective material.

[0083] The reflective member 410 may be formed to have a thickness thinner than that of the light emitting device 100. The thickness of the reflective member 410 may be in the range of 0.2 mm±0.02 mm. A lower portion of the light emitting device 100 may penetrate through an opening 417 of the reflective member 410, and an upper portion of the light emitting device 100 may protrude through the opening 417. An exit surface 81 of the light emitting device 100 may be provided in a direction perpendicular to an upper surface of the reflective member 410.

[0084] The reflective member 410 may include a metallic material or a non-metallic material. The metallic material may include metals such as aluminum, silver, and gold. The non-metallic material may include a plastic material or a resin material. The plastic material may be any one selected from the group consisting of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polychlorinated biphenyl, polyethylene terephthalate, polyvinyl alcohol, polycarbonate, polybutylene terephthalate, polyethylene naphthalate, polyamide, polyacetal, polyphenylene ether, polyamideimide, polyetherimide, polyetheretherketone, polyimide, polytetrafluoroethylene, liquid crystal polymer, fluororesin, copolymers thereof, and mixtures thereof. The resin material may be silicone or epoxy to which a reflective material, for example, a metal oxide such as TiO2, Al2O3, or SiO2, is added. The reflective member 410 may be implemented as a single layer or multiple layers, and the light reflection efficiency may be improved by such a layer structure. The reflecting member 410 according to the embodiment of the invention can increase the amount of light by reflecting the incident light so that the light is emitted with a uniform distribution.

[0085] 7, the reflective member 410 may include an adhesive layer (not shown), a reflective layer (not shown), and a plurality of dots 411. The adhesive layer may attach the reflective member 410 to the upper surface of the substrate 401. The adhesive layer may be a transparent material such as a UV adhesive, silicone, or epoxy.

[0086] The reflective layer may include a number of reflectors (not shown) inside a resin material. The reflector may be bubbles such as air or a medium having the same refractive index as air. The resin material of the reflective layer may be a material such as silicone or epoxy, and the reflector may be formed by injecting bubbles into the resin material. The reflective layer may reflect incident light or refract it in another direction by the number of reflectors. The thickness of the reflective layer may be 80% or more of the thickness of the reflective member 410.

[0087] The dots 411 are disposed on the upper surface of the reflective member 410 in a protruding form. For example, the dots 411 are disposed on the upper surface of the reflective layer in a protruding form from the upper surface. The dots 411 may be spaced apart from the light emitting element 100. The dots 411 may be spaced apart from the light emitting element 100 in a first direction and a second direction. The dots 411 may be formed on the reflective layer by printing. The dots 411 may include reflective ink. The dots 411 may be printed using a material including any one of TiO2, CaCO3, BaSO4, Al2O3, silicon, and PS. Each of the dots 411 may have a hemispherical or polygonal side cross section. The material of the dots 411 may be white.

[0088] The density of the dot pattern of the dots 411 may increase with increasing distance from the emission surface 81 of the light emitting device 100. Also, the size of the dots 411 may change with increasing distance from the emission surface 81 of the light emitting device 100. For example, the width of the dots 411 may increase with increasing distance from the emission surface 81 of the light emitting device 100.

[0089] The dots are arranged on the upper surface of the reflective member 410 in the light emitting direction of the light emitting device 100, thereby improving light reflectance, reducing light loss, and improving the brightness of the surface light source.

[0090] The resin layer 420 may be disposed on the substrate 401. The resin layer 420 may face the substrate 401. The resin layer 420 may be disposed on the entire upper surface or a partial area of ​​the substrate 401. The lower surface area of ​​the resin layer 420 may be equal to or smaller than the upper surface area of ​​the substrate 401. The resin layer 420 may be made of a transparent material. The resin layer 420 may include a resin material such as silicone or epoxy. The resin layer 420 may include a thermosetting resin material, and may selectively include, for example, PC, OPS, PMMA, PVC, etc. The resin layer 420 may be formed of glass, but is not limited thereto. For example, the main material of the resin layer 420 may use a resin material whose main material is a urethane acrylate oligomer. For example, a mixture of a synthetic oligomer, a urethane acrylate oligomer, and a polymer type, a polyacrylic, may be used. Of course, a monomer containing low boiling point dilution type reactive monomers such as IBOA (isobornyl acrylate), HPA (hydroxylpropyl acrylate), 2-HEA (2-hydroxyethyl acrylate) and the like may be further included, and a photoinitiator (e.g., 1-hydroxycyclohexyl phenyl-ketone, etc.) or an antioxidant may be mixed as an additive.

[0091] The resin layer 420 is a layer that guides light using resin, and is therefore thinner than glass, so that it can be provided as a flexible plate. The resin layer 420 can emit a point light source emitted from the light emitting device 100 in the form of a line light source or a surface light source.

[0092] The upper surface of the resin layer 420 may diffuse the light emitted from the light emitting device 100 to emit light. For example, the resin layer 420 may include beads (not shown), which may diffuse and reflect the incident light to increase the amount of light. The beads may be disposed in a range of 0.01 to 0.3% based on the weight of the resin layer 420. The beads may be made of any one selected from silicone, silica, glass bubble, PMMA (Polymethyl methacrylate), urethane, Zn, Zr, Al2O3, and acrylic, and the particle diameter of the beads may be in a range of about 1 μm to about 20 μm, but is not limited thereto.

[0093] The resin layer 420 is disposed on the light emitting device 100, and therefore can protect the light emitting device 100 and reduce loss of light emitted from the light emitting device 100. The light emitting device 100 may be embedded below the resin layer 420.

[0094] The resin layer 420 may be in contact with a surface of the light emitting device 100 and may be in contact with the emission surface 81 of the light emitting device 100. A part of the resin layer 420 is disposed in the opening 417 of the reflective member 410. A part of the resin layer 420 may be in contact with the upper surface of the substrate 401 through the opening 417 of the reflective member 410. In this way, the reflective member 410 can be fixed between the resin layer 420 and the substrate 401 by the part of the resin layer 420 being in contact with the substrate 401.

[0095] Fig. 8 is another cross-sectional view illustrating the A-A' cross section of Fig. 5, and Fig. 9 is an enlarged view of the A2 region of Fig. 8. In the description using Figs. 8 and 9, the description of the same or similar components as those of the lighting module described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0096] 8 and 9, a diffusion layer 430 is further disposed on the upper surface of the resin layer 420. For example, the upper surface of the resin layer 420 may have an adhesive force, and the diffusion layer 430 is attached to the resin layer 420. For example, the upper surface of the resin layer 420 may be attached to the diffusion layer 430 by an adhesive force having fine cilia. In this case, the diffusion layer 430 may be attached onto the resin layer 420 by applying a predetermined pressure or pressure / heat. Since the diffusion layer 430 is attached to the resin layer 420 by its own adhesive force without a separate adhesive, a process of attaching an adhesive separately can be reduced, and since there is no need to use an adhesive that is harmful to the human body, waste of processes and materials can be reduced.

[0097] The material of the diffusion layer 430 may be a light-transmitting material. The diffusion layer 430 may include at least one of a polyester (PET) film, a PMMA (Poly Methyl Methacrylate) material, and a PC (Poly Carbonate). The diffusion layer 430 may be provided as a film made of a resin material such as silicone or epoxy. The diffusion layer 430 may include a single layer or multiple layers.

[0098] The diffusion layer 430 can diffuse the light emitted through the resin layer 420. In addition, when the luminosity of light is high, a specific color may not be mixed, so the diffusion layer 430 can diffuse and mix the light.

[0099] The diffusion layer 430 may have a thickness of about 25 μm or more. For example, the diffusion layer 430 may have a thickness of about 25 μm to about 250 μm. Specifically, the diffusion layer 430 may have a thickness of about 100 μm to about 250 μm. The diffusion layer 430 has the above-mentioned thickness range and can provide the incident light as a uniform surface light source.

[0100] The diffusion layer 430 may include at least one or more of a diffusion agent such as beads, a phosphor, and ink particles. The phosphor may include at least one of a red phosphor, an amber phosphor, a yellow phosphor, a green phosphor, and a white phosphor. The ink particles may include at least one of a metal ink, a UV ink, and a hardening ink. The size of the ink particles may be smaller than the size of the phosphor. The surface color of the ink particles may be any one of green, red, yellow, and blue. The type of ink may be selected from PVC (Poly vinyl chloride) ink, PC (Polycarbonate) ink, ABS (acrylonitrile butadiene styrene copolymer) ink, UV resin ink, epoxy ink, silicone ink, PP (polypropylene) ink, water-based ink, plastic ink, PMMA (poly methyl methacrylate) ink, and PS (Polystyrene) ink. The ink particles may include at least one of a metal ink, a UV ink, and a hardening ink.

[0101] Fig. 10 is another cross-sectional view illustrating the A-A' cross section of Fig. 5, and Fig. 11 is an enlarged view of the A3 area of ​​Fig. 10. In the description using Figs. 10 and 11, the description of the same or similar components as those of the lighting module described above will be omitted, and the same reference numerals will be used for the same or similar components.

[0102] 10 and 11, a light blocking portion 425 is further disposed on the resin layer 420. The light blocking portion 425 may face an upper surface of the substrate 401. The light blocking portion 425 is disposed between the resin layer 420 and the diffusion layer 430. The light blocking portion 425 may overlap the light emitting device 100 in a third direction defined by a z-axis direction. The light blocking portion 425 is printed in a multi-layer manner on the lower surface of the diffusion layer 430, and the light blocking portion 425 may have a structure including a multiplicity of patterns having different sizes.

[0103] Also, the light blocking portion 425 may be disposed extending along the emission direction of the light emitted from the light emitting element 100. As an example, the light blocking portion 425 may be disposed extending to an area where the dots 411 are disposed. In this case, the light blocking portion 425 may not overlap the dots 411 in the third direction. That is, the light blocking portion 425 may be formed in an area where a part of the light blocking portion 425 overlaps the light emitting element 100 and does not overlap the dots 411. Alternatively, the light blocking portion 425 may be disposed in an area where a part of the light blocking portion 425 overlaps the light emitting element 100 and another part of the light blocking portion 425 overlaps the dots 411. In this case, the area of ​​the light blocking portion 425 overlapping the dots 411 may be approximately 30% or less of the area of ​​the light blocking portion 425 not overlapping the dots 411.

[0104] The width of the light blocking portion 425 in the first direction may be larger than the width of the light emitting element 100 in the first direction. Also, the width of the light blocking portion 425 in the second direction may be larger than the width of the light emitting element 100 in the second direction.

[0105] When viewed from above, the planar shape of the light blocking portion 425 may have various shapes such as a circle, an ellipse, a polygon, etc. As an example, the planar shape of the light blocking portion 425 may include a shape including a curve in consideration of the directivity angle of the light emitting device 100, etc.

[0106] The number of the light blocking parts 425 may be the same as the number of the light emitting devices 100. The light blocking parts 425 may be provided with a size or area sufficient to prevent hot spots caused by light emitted in an emission direction of the light emitting device 100 on each light emitting device 100. In addition, the light blocking parts 425 cover an area capable of increasing light blocking efficiency according to the light directional angle distribution and light reflection characteristics of the light emitting device 100 since the light emitting device 100 emits light in a side direction, i.e., a first direction.

[0107] An adhesive layer 440 is disposed around the light blocking portion 425. The adhesive layer 440 is disposed between the resin layer 420 and the diffusion layer 430. The adhesive layer 440 is disposed in an area of ​​the upper surface of the resin layer 420 where the light blocking portion 425 is not disposed. The adhesive layer 440 may include a light-transmitting adhesive material. The adhesive layer 440 may bond the resin layer 420 and the diffusion layer 430.

[0108] Figure 12 is another cross-sectional view showing the cross section taken along the line A-A' of Figure 5. In the description using Figure 12, the description of the same or similar components as those in the lighting module described above will be omitted, and the same reference numerals will be used to denote the same or similar components.

[0109] 12, a plurality of light emitting devices 100 are disposed on the substrate 401. The plurality of light emitting devices 100 may be of a top view type electrically connected to the substrate 401. The plurality of light emitting devices 100 are disposed at set intervals on the substrate 401. For example, the plurality of light emitting devices 100 may be disposed at equal intervals in the first direction. Also, the plurality of light emitting devices 100 may be disposed at equal intervals in the second direction.

[0110] Therefore, the lighting module 400 including the plurality of light emitting devices 100 can emit light as a surface light source. The lighting module 400 can emit light toward the open upper portion of the housing 300.

[0111] FIG. 13 is a front view showing a light emitting element on a substrate in a lighting module according to an embodiment, and FIG. 14 is a side view of the light emitting element of FIG.

[0112] 13 and 14, a light emitting device 100 includes a body 10 having a cavity 20, a plurality of lead frames 30, 40 in the cavity 20, and a light emitting chip 71 disposed on at least one of the plurality of lead frames 30, 40. The light emitting device 100 may be implemented as a side emission type package.

[0113] The body 10 may include a cavity 20 at the bottom of which the lead frames 30, 40 are exposed. The lead frames 30, 40 may be separated into, for example, a first lead frame 30 and a second lead frame 40, and coupled to the body 10.

[0114] The body 10 may be made of an insulating material. The body 10 may be made of a reflective material. The body 10 may be made of a material having a reflectance higher than a transmittance with respect to a wavelength emitted from the light emitting chip, for example, a material having 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 made of a resin-based insulating material, for example, a resin material such as polyphthalamide (PPA). The body 10 may be made of a thermosetting resin or a highly heat-resistant and highly light-resistant material including a silicone-based, epoxy-based, or plastic material. The body 10 includes a white resin. The body 10 may be selectively added with an acid anhydride, an antioxidant, a release agent, a light reflector, an inorganic filler, a curing catalyst, a light stabilizer, a lubricant, or titanium dioxide. The body 10 may be molded with at least one 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, a solid epoxy resin composition can be used that is prepared by adding an epoxy resin made of TGIC (Triglycidylisocyanurate), hydrogenated bisphenol A diglycidyl ether, etc., an acid anhydride made of hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride, etc., DBU (1,8-Diazabicyclo(5,4,0)undecene-7) as a curing accelerator, ethylene glycol as a co-catalyst, titanium oxide pigment, and glass fiber to the epoxy resin, and then partially curing the epoxy resin by heating to bring it to a B-stage, but is not limited thereto. The main body 10 may be a thermosetting resin 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.

[0115] The body 10 may include a resin material to which a reflective material, for example, a metal oxide, is added, and the metal oxide may include at least one of TiO2, SiO2, and Al2O3. Such a body 10 can effectively reflect incident light. As another example, the body 10 may be made of a translucent resin material or a resin material having a phosphor that converts the wavelength of incident light. The bottom of the body 10 may be a side surface corresponding to the substrate 401.

[0116] The first lead frame 30 includes a first lead portion 31 disposed at the bottom of the cavity 20, a first bonding portion 32 extended to the outside of the body 10, and a first heat dissipation portion 33. The first bonding portion 32 is bent from the first lead portion 31 within the body 10 to protrude to the outside of the body, and the first heat dissipation portion 33 is bent from the first bonding portion 32.

[0117] The second lead frame 40 includes a second lead portion 41 disposed at the bottom of the cavity 20, a second bonding portion 42 disposed in an outer region of the body 10, and a second heat dissipation portion 43. The second bonding portion 42 is bent from the second lead portion 41 within the body 10, and the second heat dissipation portion 43 is bent from the second bonding portion 42.

[0118] Here, the light emitting chip 71 is disposed on the first lead portion 31 of the first lead frame 30, and is connected to the first and second lead portions 31 and 41 by wires, or is connected to the first lead portion 31 by adhesive and connected to the second lead portion 41 by wires. Such a 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 may selectively emit light within a wavelength range from ultraviolet to visible light. The light emitting chip 71 may emit light, for example, at ultraviolet or blue peak wavelengths. The light emitting chip 71 may include at least one of a II-IV group compound and a II-IV group compound. The light emitting chip 71 may be made of a compound selected from the group consisting of, for example, GaN, AlGaN, InGaN, AlInGaN, GaP, AlN, GaAs, AlGaAs, InP, and mixtures thereof.

[0119] One or more light emitting chips 71 are disposed in the cavity 20, and emit light with the greatest intensity in the direction of the central axis Y0.

[0120] One or more light emitting chips are disposed in the cavity 20 of the light emitting device 100 according to the embodiment. The light emitting chip may be selected from, for example, a red LED chip, a blue LED chip, a green LED chip, and a yellow green LED chip.

[0121] A molding member 80 is disposed in the cavity 20 of the body 11, and the molding member 80 may be formed of a single layer or multiple layers including a light-transmitting resin such as silicone or epoxy. A phosphor for changing the wavelength of light emitted may be disposed on the molding member 80 or the light-emitting chip 71, and the phosphor excites a part of the light emitted from the light-emitting chip 71 to emit light of a different wavelength. The phosphor may be formed by selecting from quantum dots, YAG, TAG, silicate, nitride, and oxy-nitride-based materials. The phosphor may include at least one of a red phosphor, a yellow phosphor, and a green phosphor, but is not limited thereto. The emission surface 81 of the molding member 80 may have a flat shape, a concave shape, a convex shape, or the like, but is not limited thereto. As another example, a light-transmitting film having a phosphor may be disposed on the cavity 20, but is not limited thereto.

[0122] A lens may be further formed on the upper portion of the body 10. The lens may have a concave and / or convex lens structure, and may adjust the light distribution of the light emitted by the light emitting device 100.

[0123] Semiconductor elements such as a light receiving element and a protection element are mounted on the body 10 or any one of the lead frames. The protection element can be realized as a thyristor, a Zener diode or a TVS (Transient voltage suppression), and the Zener diode protects the light emitting chip from ESD (electro static discharge).

[0124] At least one or more light emitting devices 100 are disposed on the substrate 401, and a reflective member 410 is disposed around the bottom of the light emitting device 100. The first and second lead portions 33 and 43 of the light emitting device 100 are bonded to pads 403 and 405 of the substrate 401 with conductive adhesive members 203 and 205, which are solder or conductive tape.

[0125] The optical assembly 10 according to the embodiment can be used as a rearview mirror assembly of a vehicle. For example, the optical assembly 10 can be disposed in the left and right side mirrors of a vehicle to provide the driver with information about the vehicle located behind the vehicle.

[0126] Fig. 15 is an exploded perspective view of the rearview mirror assembly according to the embodiment, Fig. 16 is a cross-sectional view of the rearview mirror assembly according to the embodiment, and Fig. 17 is a top view of the blocking member according to the embodiment.

[0127] 15 to 17, the optical assembly 10 will be described as being applied to a left side mirror adjacent to the driver's seat. In the case of a right side mirror adjacent to the passenger seat, the configurations of the optical assembly 10 described above are symmetrical with each other in the same shape, so for convenience of explanation, the optical assembly 10 will be described as being applied to a left side mirror adjacent to the driver's seat.

[0128] 15 to 17, the rearview mirror assembly 2000 may include a cover case 810, a mirror member 820 and an optical assembly 10.

[0129] The cover case 810 may be configured to be exposed to the outside of the vehicle. For example, the cover case 810 may be a cover for a side mirror disposed on each of the left and right sides of the vehicle. The cover case 810 may include a material having a predetermined rigidity and reliability. The cover case 810 may include a material capable of maintaining reliability from the outside in a vehicle stopping or running environment.

[0130] The cover case 810 has one side open and can include an internal receiving space 805. The cover case 810 can receive the optical assembly 10 and the mirror member 820.

[0131] The mirror member 820 is disposed in the receiving space 805 of the cover case 810. The mirror member 820 is disposed such that a bottom surface 821 of the mirror member 820 faces the receiving space 805. An upper surface 822 of the mirror member 820 may be exposed to the outside. The bottom surface 821 and the upper surface 822 of the mirror member 820 may be provided as at least one of a flat surface and a curved surface. The mirror member 820 may be a translucent member including a mirror or a display. The mirror member 820 can transmit light emitted from the optical assembly 10. For example, a part of the mirror member 820, for example, a region overlapping with the optical assembly 10, can transmit light emitted from the optical assembly 10.

[0132] The optical assembly 10 is disposed in the receiving space 805 of the cover case 810. The optical assembly 10 is disposed between the mirror member 820 and the cover case 810. For example, the optical assembly 10 is disposed on a bottom surface 821 of the mirror member 820 facing the receiving space 805 of the cover case 810. The optical assembly 10 may emit light toward an open area of ​​the cover case 810. The optical assembly 10 may emit light toward the bottom surface 821 of the mirror member 820.

[0133] At this time, the height between the lighting module 400 and the mirror member 820 may be variable. The height in the vertical direction (V axis direction) between the upper surface of the lighting module 400 and the lower surface 821 of the mirror member 820 may be increased from the first inner side IS1 toward the second inner side IS2. Although not shown in the drawing, the height in the vertical direction (V axis direction) between the upper surface of the lighting module 400 and the lower surface 821 of the mirror member 820 may be decreased from the third inner side IS3 toward the fourth inner side IS4. And, the height in the vertical direction between the upper surface of the lighting module 400 and the lower surface 821 of the mirror member 820 may be increased from the second intersection point P2 of the lighting module 400 toward the fifth side S5.

[0134] A blocking member 700 is disposed on the optical assembly 10. The blocking member 700 is disposed between the optical assembly 10 and the mirror member 820. The blocking member 700 is disposed in an area overlapping the optical assembly 10. The blocking member 700 may be in direct contact with a bottom surface 821 of the mirror member 820.

[0135] The blocking member 700 may include an open area 710 and a non-transmissive area 720 .

[0136] The opening region 710 may be a region through which the light emitted from the optical assembly 10 passes. That is, the light emitted from the optical assembly 10 is emitted toward the mirror member 820 through the opening region 710 and provided to the outside.

[0137] Also, the non-transmitting region 720 may be a region other than the opening region 710 that does not transmit light emitted from the optical assembly 10. As an example, the non-transmitting region 720 may be implemented using black or white ink, etc.

[0138] That is, the open area 710 may be an effective area through which light passes, and the non-transmitting area 720 may be an ineffective area through which light does not pass.

[0139] At this time, the light emitting device 100 of the optical assembly 10 is disposed in an area overlapping the blocking member 700 in a vertical direction (V-axis direction). Here, the vertical direction (V-axis direction) refers to the height direction of the housing 300.

[0140] Specifically, the light emitting device 100 may be disposed in a region that does not overlap the opening region 710 of the blocking member 700 in the vertical direction (V-axis direction) and may overlap the non-transmitting region 720 in the vertical direction.

[0141] Also, the opening region 710 is disposed in a region that vertically (in the V-axis direction) overlaps with the dots 411 of the reflective member 410. For example, the opening region 710 may vertically overlap with the region R1 in which the dots 411 are disposed. In this case, the light emitted from the light emitting element 100 is reflected by the dots 411 and is effectively emitted in the direction of the opening region 710. As a result, the loss of light emitted from the optical assembly 10 can be minimized.

[0142] 10, the light blocking portion 425 is disposed in a region that does not overlap the opening region 710 of the blocking member 700 in the vertical direction (V-axis direction) and may vertically overlap the non-transmitting region 720. Thus, the light emitted from the light emitting device 100 can be guided to be emitted in the direction of the opening region 710.

[0143] As a result, the embodiment can minimize the loss of light emitted from the light emitting device 100 and can control the direction and brightness of the light emitted to the outside of the mirror member 820 through the opening region 710.

[0144] The rearview mirror assembly 2000 may include an indicator portion 850. The indicator portion 850 may have a shape such as a logo, a character, an icon, or the like. The indicator portion 850 may be formed on the mirror member 820. Specifically, the indicator portion 850 may be formed on a region of the mirror member 820 that vertically overlaps with the opening region 710 of the blocking member 700. The indicator portion 850 may vertically overlap with the region R1 in which the dots 411 are arranged. The indicator portion 850 may be provided as an opening in the mirror member 820, or may be implemented using colored ink.

[0145] As a result, the light emitted from the optical assembly 10 can pass through the opening region 710 and the indicator portion 850, and the shape of the indicator portion 850 can be visually recognized outside the mirror member 820.

[0146] In addition, the indicator portion 850 may be haze-treated so that when light is not emitted from the optical assembly 10, the optical assembly 10 cannot be seen outside the mirror member 820.

[0147] Although not shown in the drawings, the indicator portion 850 may be formed on the blocking member 700. Specifically, the indicator portion 850 may be formed on the opening region 710 of the blocking member 700. Thus, light emitted from the optical assembly 10 can pass through the indicator portion 850 formed on the opening region 710, and the shape of the indicator portion 850 can be visually recognized outside the mirror member 820.

[0148] Although not shown in the drawings, the indicator portion 850 may be formed on the mirror member 820 and the blocking member 700. Specifically, the indicator portion 850 may be formed on the opening region 710 of the blocking member 700 and on a region of the mirror member 820 corresponding to the opening region 710. Thus, the shape of the indicator portion 850 viewed from outside the mirror member 820 may have a three-dimensional appearance.

[0149] The rearview mirror assembly 2000 may include a sensing portion (not shown) and a control portion (not shown).

[0150] The sensor may include a radar, laser, sonic wave, or image sensor, and may be disposed behind and / or beside the vehicle. The sensor may detect other vehicles located behind and / or beside the vehicle.

[0151] The control unit is connected to the sensing unit and can control the operation of the optical assembly 10. For example, if there is another vehicle behind the vehicle, the sensing unit can sense information about the presence of the other vehicle. The sensing unit can then provide the sensed information to the control unit. The control unit can then apply a signal to the optical assembly 10 to turn on the light. As a result, the driver of the vehicle can see the shape of a logo and / or icon displayed on the upper surface 822 of the mirror member 820 through the optical assembly 10 and the blocking member 700, and can receive information about the presence of the other vehicle behind the vehicle.

[0152] In addition, when the other vehicle disappears from the side rear of the vehicle in which the driver is riding, the detector may detect information therefor, and then the detector may provide the detected information to the controller, and the controller may apply a signal to the optical assembly 10 to turn off the emission of light.

[0153] In this case, the lighting module 400 according to the embodiment is disposed to be inclined. Specifically, an upper surface of the optical assembly 10 may contact the blocking member 700, and an upper surface of the blocking member 700 may contact a bottom surface 821 of the mirror member 820.

[0154] As a result, the illumination module 400 of the optical assembly 10 includes the mirror member 82 Specifically, the lighting module 400 is disposed at a first inclination angle IS1 with respect to the second inner side surface IS2. a1In addition, the lighting module 400 may be inclined at the second inclination angle a2 from the third inner side IS3 to the direction of the fourth inner side IS4. That is, the lighting module 400 may be inclined toward the fifth inner side IS5 from the first intersection P1 of the housing 300. More specifically, the bottom surface 310 of the housing 300 may be inclined as described above, and the lighting module 400 and the optical member 500 disposed on the bottom surface 310 may have a shape inclined at an inclination angle within the above-mentioned range.

[0155] As a result, the rearview mirror assembly 2000 of the embodiment can minimize light loss and maximize the amount of light emitted through the mirror member 820, and can control the emission direction of the emitted light and the brightness value of the light according to the emission direction.

[0156] 18 is a diagram for explaining the emission angle of light emitted from a rearview mirror assembly according to an embodiment. In the explanation of FIG. 18, the left side mirror adjacent to the driver's seat will be described. In the case of the right side mirror adjacent to the passenger seat, the components including the optical assembly 10 are symmetrical with each other in the same shape, so for convenience of explanation, the structure applied to the left side mirror will be mainly described.

[0157] 18, the rearview mirror assembly 2000 according to the embodiment can provide the driver with information about a vehicle located behind the vehicle. For example, a region overlapping the optical assembly 10 can be divided into a first region R1 and a second region R2 based on a virtual line L1 extending in a direction perpendicular to an extension direction of the rearview mirror assembly 2000. Here, the first region R1 may be a region where the driver 1 is located, and the second region R2 may be a region where another vehicle 2 or an object located behind the vehicle in which the driver 1 is riding is located.

[0158] In the rearview mirror assembly 2000 according to the embodiment, when another vehicle 2 is located in the second region R2, the light emitted from the optical assembly 10 is emitted to the outside through the blocking member 700 and the mirror member 820.

[0159] At this time, the lighting module 400 is disposed to be inclined with respect to the bottom surface 310 of the mirror member 820 as described above. For example, the lighting module 400 is disposed to be inclined in a direction corresponding to the first region R1 where the driver 1 is located. Therefore, the light emitted from the rearview mirror assembly 2000 through the mirror member 820 is emitted in a set direction and may have different brightness values ​​depending on the emission direction.

[0160] For example, the luminance value of the light emitted toward the first region R1 where the driver 1 is located may be different from the luminance value of the light emitted toward the second region R2 where the other vehicle 2 is located. Specifically, the luminance value of the light emitted toward the first region R1 may be greater than the luminance value of the light emitted toward the second region R2.

[0161] As a result, the rearview mirror assembly 2000 according to the embodiment can provide light with high brightness to the driver 1 located in the first region R1. Also, the rearview mirror assembly 2000 can provide light with relatively low brightness to another vehicle 2 located to the rear side of the driver 1's vehicle in the second region R2.

[0162] Therefore, the driver 1 can effectively view the shape of the indicator unit 850. Also, it is possible to minimize the light emitted from the rearview mirror assembly 2000 toward the other vehicle 2 located behind and to the side of the driver 1. Therefore, it is possible to minimize or prevent the driver of the other vehicle 2 from being disturbed in driving by the light.

[0163] The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to one embodiment. In addition, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by a person having ordinary skill in the art to which the embodiment belongs. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

[0164] In addition, the above description has been centered on the embodiments, but these are merely examples and do not limit the present invention. A person having ordinary skill in the art to which the present invention pertains may make various modifications and applications not exemplified above within the scope of the essential characteristics of the present embodiments. For example, each component specifically presented in the embodiments may be modified and implemented. The differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

Claims

1. a housing having a slanted bottom surface, a plurality of inner surfaces around the outside of the bottom surface, and a storage space having an open top; a lighting module disposed on the inclined bottom surface; an optical member disposed on the lighting module; a cover member disposed on the optical member; The lighting module comprises: a substrate disposed on the inclined bottom surface; At least one light emitting element disposed on the substrate; a resin layer that seals the light-emitting element and the substrate; an upper surface of the resin layer that diffuses light emitted from the light emitting element to emit light; the plurality of inner surfaces include a first inner surface adjacent to the light emitting element, a second inner surface facing the first inner surface, and third and fourth inner surfaces disposed between the first and second inner surfaces and facing each other; a height between the bottom surface of the housing and the top surface of the housing increases from the first inner surface toward the second inner surface and decreases from the third inner surface toward the fourth inner surface, the cover member and the optical member are disposed in the accommodation space, an upper surface of the housing is inclined at a first inclination angle with respect to a bottom surface of the housing based on a horizontal direction from the first inner side surface of the housing to the second inner side surface of the housing; an optical assembly, wherein a lower surface of the cover member is inclined at a second inclination angle with respect to an upper surface of the housing in a horizontal direction from the third inner surface to the fourth inner surface of the housing.

2. An optical assembly as described in claim 1, wherein the first inclination angle of the upper surface of the housing is between 15 degrees and 40 degrees.

3. The optical assembly of claim 2 , wherein the lighting modules have the same thickness and are disposed at the first inclination angle with respect to a top surface of the housing based on a horizontal direction from the first inner surface of the housing to the second inner surface of the housing.

4. The optical assembly according to claim 3 , wherein an optical axis of the light-emitting element is inclined at the first inclination angle with respect to a horizontal direction from a first inner surface of the housing toward the second inner surface of the housing.

5. The lighting module includes a reflective member disposed between the substrate and the resin layer, the reflecting member includes an opening in which a lower portion of the light emitting element is disposed, The optical assembly of claim 1 , wherein the reflective member includes a plurality of dots protruding from a top surface of the reflective member.

6. the housing inner surface includes a fifth inner surface disposed between the second inner surface and the third inner surface, and a sixth inner surface disposed between the second inner surface and the fourth inner surface, a height between the bottom surface of the housing and the top surface of the housing is highest in a region adjacent to the fifth inner surface; a height between the bottom surface of the housing and the top surface of the housing is lowest at a first intersection between the first inner surface and the fourth inner surface; The optical assembly according to claim 5 , wherein the planar shape of the lighting module is the same polygonal shape as a bottom surface of the housing.

7. an upper surface of the cover member is disposed on the same plane as an upper surface of the housing; a thickness between an upper surface and a lower surface of the cover member becomes thinner from the third inner surface toward the fourth inner surface, The optical assembly according to claim 1 , wherein the second inclination angle of the lower surface of the cover member is between 15 degrees and 40 degrees.

8. The optical assembly according to claim 1 , wherein a material of the housing or a surface of the receiving space includes black.

9. a blocking member disposed over the optical assembly and including an aperture area; a mirror member disposed on the blocking member; The optical assembly includes: a housing having a slanted bottom surface, a plurality of inner surfaces around the outside of the bottom surface, and a storage space having an open top; a lighting module disposed on the inclined bottom surface; an optical member disposed on the lighting module; a cover member disposed on the optical member; The lighting module comprises: a substrate disposed so as to be inclined on the inclined bottom surface; At least one light emitting element disposed on the substrate; a resin layer that seals the light-emitting element and the substrate; an upper surface of the resin layer that diffuses light emitted from the light emitting element to emit light; the plurality of inner surfaces include a first inner surface adjacent to the light emitting element, a second inner surface facing the first inner surface, and third and fourth inner surfaces disposed between the first and second inner surfaces and facing each other; a height between the bottom surface of the housing and the top surface of the housing increases from the first inner surface toward the second inner surface and decreases from the third inner surface toward the fourth inner surface, a portion of the mirror member overlapping the optical assembly, through which light emitted from the optical assembly passes; the cover member and the optical member are disposed in the accommodation space, an upper surface of the housing is inclined at a first inclination angle with respect to a bottom surface of the housing based on a horizontal direction from the first inner side surface to the second inner side surface of the housing; a lower surface of the cover member inclined at a second inclination angle with respect to an upper surface of the housing based on a horizontal direction from the third inner side surface to the fourth inner side surface of the housing.

10. The first inclination angle of the upper surface of the housing is 15 degrees to 40 degrees, 10. The rearview mirror assembly according to claim 9, wherein the second inclination angle of the lower surface of the cover member is between 15 degrees and 40 degrees.

11. The lighting module includes a reflective member disposed on the substrate; 11. The rearview mirror assembly according to claim 9 or 10, wherein the reflective member includes an opening in which a lower portion of the light emitting element is disposed, and a plurality of dots protruding from an upper surface of the reflective member.

12. The mirror member further includes an indicator portion formed in at least one of an opening region of the blocking member and a region of the mirror member overlapping the opening region, The rearview mirror assembly according to claim 11, wherein the indicator portion is disposed in an area overlapping the plurality of dots.

13. the lighting module includes a light-shielding portion disposed on the resin layer, the light-shielding portion is disposed in a region that does not overlap with the opening region, a thickness between an upper surface and a lower surface of the cover member becomes thinner from the third inner surface toward the fourth inner surface, the housing inner surface includes a fifth inner surface disposed between the second inner surface and the third inner surface, and a sixth inner surface disposed between the second inner surface and the fourth inner surface, a height between the bottom surface of the housing and the top surface of the housing is highest in a region adjacent to the fifth inner surface; 13. The rearview mirror assembly of claim 11 or 12, wherein a height between the bottom surface of the housing and the top surface of the housing is lowest at a first intersection between the first inner surface and the fourth inner surface.

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