Light emitting module and vehicle lamp including the same

Abstract

The present invention relates to a light-emitting module and a vehicle lamp comprising the same, and more particularly, to a light-emitting module capable of realizing surface light emission and a vehicle lamp comprising the same. A light emitting module according to an embodiment of the present invention may include: a substrate formed using a transparent material; the at least one light source is arranged on the rear surface of the substrate so as to emit light in a first direction; and a deflection part located behind the substrate so as to deflect the light emitted in the first direction in a second direction, in which the deflection part includes: a reflective layer formed on at least a part of an opposing surface facing the substrate in a bracket located behind the substrate, the bracket supporting the substrate; and a reflective surface formed in at least a portion of a rear surface of the transmissive material between the substrate and the bracket.

Description

Technical Field

[0001] The present invention relates to a light emitting module and a vehicle lamp including the light emitting module, and more particularly to a light emitting module capable of achieving surface luminescence and a vehicle lamp including the light emitting module. Background Art

[0002] Typically, a vehicle is equipped with various vehicle lamps, which serve to illuminate objects around the vehicle when driving at night and to signal the vehicle's driving status to drivers of surrounding vehicles or pedestrians.

[0003] For example, headlights and fog lights are primarily intended for lighting, while turn signals, taillights, and brake lights are primarily intended for signaling. The installation criteria and specifications for these vehicle lamps have been regulated by relevant laws and regulations to fully utilize their respective functions.

[0004] Such a vehicle lamp may require surface emission for functional or design reasons, and for this purpose, light generated from a plurality of light sources is mixed to achieve surface emission.

[0005] At this time, when surface emission is achieved by mixing light generated from multiple light sources, a gap long enough to sufficiently mix the light generated from the multiple light sources is required. This gap limits the reduction in the overall size of the vehicle lamp.

[0006] Furthermore, when surface luminescence is achieved by mixing light generated from multiple light sources, since the brightness near each light source is relatively high, the area corresponding to each light source in the surface luminescence has a higher brightness than other areas, resulting in an overall decrease in brightness uniformity.

[0007] Therefore, when surface lighting is achieved through multiple light sources, a solution is needed that can reduce the overall size while improving brightness uniformity. Summary of the Invention

[0008] Technical issues

[0009] The technical problem to be solved by the present invention is to provide a light emitting module that can be miniaturized by shortening a gap for mixing light, and a vehicle lamp including the light emitting module.

[0010] Furthermore, the present invention provides a light emitting module capable of improving overall brightness uniformity when achieving surface emission by diffusing light generated from a light source, and a vehicle lamp including the light emitting module.

[0011] The technical problems of the present invention are not limited to the technical problems mentioned above, and those skilled in the art can clearly understand other technical problems not mentioned from the following description.

[0012] Technical Solution

[0013] In order to achieve the above technical problem, the light-emitting module according to an embodiment of the present invention may include: a substrate formed using a transparent material; at least one light source arranged on the rear surface of the substrate to emit light in a first direction; and a deflection unit located behind the substrate to deflect the light emitted in the first direction toward a second direction, wherein the deflection unit includes: a reflective surface formed in at least a portion of the rear surface of a transmissive material, the transmissive material being located between the substrate and a bracket located behind the substrate, and the bracket being used to support the substrate.

[0014] The deflection unit may further include: at least one diffusion element formed on the rear surface of the transmissive material, which refracts or reflects at least a portion of the light emitted in the first direction and deflects it in the second direction according to an incident angle of the light emitted in the first direction.

[0015] The rear surface of the transmissive material may include a first region where the at least one diffusion element is formed and a second region where the at least one diffusion element is not formed, and the reflective surface may be formed in at least one of the first region and the second region.

[0016] The reflective surface may be formed by depositing or coating a material capable of reflecting light.

[0017] The reflective surface may be formed by applying a paint having a color capable of reflecting light.

[0018] The deflecting unit may further include a reflective layer formed on at least a portion of an opposite surface of the bracket facing the substrate.

[0019] The system may further include at least one light diffusion layer arranged to overlap with the at least one light source so as to diffuse light passing near the at least one light source.

[0020] The at least one light diffusion layer may transmit a portion of the deflected light and reflect another portion of the deflected light.

[0021] The at least one light diffusion layer may be formed to have a thickness that increases toward the center of the at least one light source.

[0022] The at least one light diffusion layer may be formed by stacking a plurality of layers, and a layer located on an upper side in a stacking direction of the plurality of layers may have a shorter length in at least one direction based on the center of the at least one light source.

[0023] The at least one light diffusion layer may be formed on one surface of at least one of the substrate and a cover located in front of the substrate, the cover transmitting at least a portion of the light deflected by the deflecting unit.

[0024] The device may further include a cover located in front of the substrate, transmitting at least a portion of the light deflected by the deflection unit, and having at least one optical element formed at a position corresponding to the at least one light source, deflecting the light transmitted through the substrate.

[0025] In order to achieve the above technical problems, a vehicle lamp according to an embodiment of the present invention may include: a light-emitting module, including at least one light source; and a diffusion lens, located in front of the light-emitting module to diffuse the light irradiated from the light-emitting module, wherein the direction of the light irradiated from the light-emitting module may be different from the direction of the light emitted from the at least one light source.

[0026] The light-emitting module may include: a substrate, on the rear surface of which the at least one light source is provided; a bracket, located behind the substrate to support the substrate; a transmissive material, located between the substrate and the bracket; and a cover, located in front of the substrate and assembled with the bracket to form a space for accommodating the substrate and the transmissive material, wherein at least one optical element may be formed on the cover, and the at least one optical element may be formed at a position corresponding to the at least one light source so that at least a portion of the light transmitted through the substrate can be deflected.

[0027] The transmissive material may have at least one diffusion element formed on the rear surface so as to deflect the light emitted from the at least one light source in the first direction toward the second direction, and at least a portion of the rear surface of the transmissive material may have a reflective surface formed on at least a portion of the light emitted from the at least one light source in the first direction.

[0028] The at least one diffusion element may refract or reflect the light emitted in the first direction according to an incident angle of the light emitted in the first direction, so that at least a portion of the light emitted in the first direction may be deflected in the second direction.

[0029] The present invention may further include a reflective layer formed on at least a portion of an opposite surface of the bracket facing the substrate.

[0030] The invention may further include at least one light diffusion layer disposed to overlap with the at least one light source, wherein the at least one light diffusion layer reflects a portion of light that may pass through the vicinity of the at least one light source and transmits another portion.

[0031] The at least one light diffusion layer may be formed to have a thickness that increases toward the center of the at least one light source.

[0032] The at least one light diffusion layer may be formed by stacking a plurality of layers, and a layer located on an upper side in a stacking direction of the plurality of layers may have a shorter length in at least one direction based on the center of the at least one light source.

[0033] Details of other embodiments are included in the detailed description and drawings.

[0034] Beneficial effects

[0035] According to the vehicle lamp of the present invention as described above, one or more of the following effects are achieved.

[0036] Light emitted in a first direction from a light source arranged on the rear surface of the substrate is deflected in a second direction by a deflection unit, and at least a portion of the light deflected by the deflection unit is transmitted through a cover located in front of the substrate and moves forward. Therefore, the gap required for mixed light can be relatively shortened, which is conducive to miniaturization and can improve the uniformity of overall brightness when realizing surface light emission.

[0037] Furthermore, when surface emission is achieved by a light diffusion layer located overlapping with the light source, the brightness uniformity of the light can be improved, and the optical elements formed by the cover may deflect the light passing through the substrate, thereby improving the shadow band generated by the rear surface of the light source when viewed from the front.

[0038] The effects of the present invention are not limited to the effects mentioned above, and those skilled in the art can clearly understand other technical effects that have not been mentioned through the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a perspective view showing a light emitting module according to a first embodiment of the present invention.

[0040] Figure 2 is a side view showing a light emitting module according to a first embodiment of the present invention.

[0041] Figure 3 and Figure 4 is an exploded perspective view showing a first light emitting module according to an embodiment of the present invention.

[0042] Figure 5 yes Figure 1 Cross-sectional view of line A-A'.

[0043] Figure 6 FIG. 1 is a schematic diagram illustrating a gap required for mixing light according to the first embodiment of the present invention.

[0044] Figure 7 FIG. 1 is a schematic diagram illustrating the arrangement interval of light sources according to the first embodiment of the present invention.

[0045] Figure 8 is a cross-sectional view showing a diffusion sheet according to a first embodiment of the present invention.

[0046] Figure 9 and Figure 10 is a cross-sectional view showing a fluorescent sheet according to a first embodiment of the present invention.

[0047] Figure 11 is an exploded perspective view showing a light emitting module according to a second embodiment of the present invention.

[0048] Figure 12 is a cross-sectional view showing a light emitting module according to a second embodiment of the present invention.

[0049] Figure 13 is a cross-sectional view showing a first diffusion element according to a second embodiment of the present invention.

[0050] Figures 14 to 19 Is to show that Figure 13 Schematic diagram of the light path of the first diffusion element.

[0051] Figure 20 is a cross-sectional view showing a second diffusion element according to a second embodiment of the present invention.

[0052] Figures 21 to 24 Is to show that Figure 20 Schematic diagram of the light path of the second diffusion element.

[0053] Figure 25 FIG. 1 is a cross-sectional view showing a first diffusing element and a second diffusing element according to a second embodiment of the present invention.

[0054] Figure 26 is a perspective view showing a light emitting module according to a third embodiment of the present invention.

[0055] Figure 27 is a cross-sectional view showing a light emitting module according to a third embodiment of the present invention.

[0056] Figure 28 FIG. 1 is a schematic diagram illustrating a light path of a light emitting module according to a third embodiment of the present invention.

[0057] Figure 29 is an exploded perspective view showing a second diffusion pattern having a partition wall shape according to a third embodiment of the present invention.

[0058] Figure 30 is an exploded perspective view showing a light emitting module according to a fourth embodiment of the present invention.

[0059] Figure 31is a cross-sectional view showing a light emitting module according to a fourth embodiment of the present invention.

[0060] Figure 32 is an exploded perspective view showing a light emitting module according to a fifth embodiment of the present invention.

[0061] Figure 33 is a cross-sectional view showing a light emitting module according to a fifth embodiment of the present invention.

[0062] Figure 34 is a cross-sectional view showing a light emitting module according to a sixth embodiment of the present invention.

[0063] Figure 35 FIG. 7 is an exploded perspective view showing a light emitting module according to a seventh embodiment of the present invention.

[0064] Figure 36 is a cross-sectional view showing a light emitting module according to a seventh embodiment of the present invention.

[0065] Figure 37 FIG. 1 is a schematic diagram illustrating a light path of a light diffusion layer according to a seventh embodiment of the present invention.

[0066] Figure 38 and Figure 39 1 is a schematic diagram showing the structure of a light diffusion layer according to a seventh embodiment of the present invention.

[0067] Figure 40 is a perspective view showing a light emitting module according to an eighth embodiment of the present invention.

[0068] Figure 41 yes Figure 40 BB' line cross-section diagram.

[0069] Figure 42 is a schematic diagram showing a light path through an optical element according to an eighth embodiment of the present invention.

[0070] Figure 43 FIG. 1 is a schematic diagram illustrating a luminance measurement line of a light emitting module according to an embodiment of the present invention.

[0071] Figure 44 is a schematic diagram illustrating brightness distribution of a light emitting module according to an embodiment of the present invention.

[0072] Figure 45 Schematic diagram showing a manufacturing process of a light emitting module according to an embodiment of the present invention.

[0073] Figure 46 and Figure 47 1 is a perspective view showing a substrate in which an opening portion is formed according to an embodiment of the present invention.

[0074] Figure 481 is a cross-sectional view showing a substrate in which an opening portion is formed according to an embodiment of the present invention.

[0075] Figure 49 1 is a perspective view showing a vehicle lamp according to an embodiment of the present invention.

[0076] Figure 50 is a side view showing a vehicle lamp according to an embodiment of the present invention. DETAILED DESCRIPTION

[0077] The advantages and features of the present invention, as well as methods for achieving these advantages and features, will be apparent by reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different forms and is not limited to the embodiments disclosed below. These embodiments are provided solely to complete the disclosure of the present invention and to fully inform those having ordinary knowledge in the technical field to which the present invention belongs. The present invention is defined solely by the scope of the claims. Throughout this specification, the same reference numerals refer to the same components.

[0078] Therefore, in some embodiments, in order to avoid obscuring the present invention, well-known process steps, well-known structures, and well-known technologies are not described in detail.

[0079] The terms used in this specification are used to illustrate the embodiments and are not intended to limit the present invention. In this specification, unless otherwise specified, the singular also includes the plural in a sentence. The terms "comprises" and / or "comprising" used in the specification mean that the existence or addition of one or more other constituent elements, steps, operations and / or elements other than the mentioned constituent elements, steps, operations and / or elements are not excluded. In addition, "and / or" includes each of the mentioned items and one or more combinations.

[0080] Furthermore, the embodiments described in this specification will be described with reference to the cross-sectional views and / or schematic diagrams which are idealized examples of the present invention. Therefore, the morphology of the example diagrams may be deformed depending on the manufacturing technology and / or allowable errors. Therefore, the embodiments of the present invention are not limited to the specific morphologies shown in the diagrams, but also include variations in morphology generated by the manufacturing process. Moreover, in the various drawings shown in the present invention, the various components may be somewhat enlarged or reduced for the convenience of explanation. Throughout the specification, the same reference numerals refer to the same components.

[0081] Hereinafter, the present invention will be described based on embodiments of the present invention with reference to the accompanying drawings for describing a light emitting module and a vehicle lamp including the same, and constituent elements of each embodiment may be used interchangeably.

[0082] Figure 1 is a perspective view showing a light emitting module according to a first embodiment of the present invention, Figure 2 is a side view showing a light emitting module according to a first embodiment of the present invention, Figure 3 and Figure 4 is an exploded perspective view showing a first light emitting module according to an embodiment of the present invention, Figure 5 yes Figure 1 Cross-sectional view of line A-A'.

[0083] Reference Figures 1 to 5 The light emitting module 10 according to the first embodiment of the present invention may include a substrate 1000 and a deflecting unit 2000 .

[0084] In the first embodiment of the present invention, the light-emitting module 10 is described as being installed in a vehicle, such as a car or train, to ensure visibility at night or to notify surrounding vehicles or pedestrians of the vehicle's driving status. However, this is not a limitation. The light-emitting module 10 of the present invention can be installed not only in mobile devices such as vehicles, but also in locations requiring surface illumination.

[0085] At least one light source 1100 (hereinafter referred to as "first light source") can be provided on the rear surface of the substrate 1000. In the first embodiment of the present invention, the following situation will be taken as an example for explanation: the at least one first light source 1100 includes a plurality of first light sources 1100 arranged at predetermined intervals and spaced apart from each other to prevent structural interference.

[0086] At this time, the front surface of the substrate 1000 can be understood as the surface facing the direction of light irradiation from the light-emitting module 10 of the present invention (i.e., toward the front). In this case, the multiple first light sources 1100 can be understood as being arranged on the rear surface of the substrate 1000 that is invisible when the light-emitting module 10 of the present invention is viewed from the front.

[0087] The deflection unit 2000 can deflect and move along the second direction by refraction or reflection of the light emitted from the multiple first light sources 1100 along the first direction. In the first embodiment of the present invention, the following situation will be used as an example for explanation: the deflection unit 2000 is located behind the substrate 1000 and is separated from the substrate 1000 by a predetermined distance, thereby reflecting the light emitted from the multiple first light sources 1100 along the first direction, so that the light is deflected along the second direction.

[0088] In the following embodiments of the present invention, the following case will be described as an example: a first direction is generally referred to as a direction from the substrate 1000 toward the deflection unit 2000, and a second direction is generally referred to as one or more directions different from the first direction. In the first embodiment of the present invention, the deflection unit 2000 reflects light emitted in the first direction to deflect the light in the second direction, which can be understood as the deflection unit 2000 reflecting light in one or more directions different from the first direction of the light emitted from the plurality of first light sources 1100 to deflect the light.

[0089] The substrate 1000 transmits at least a portion of the light reflected by the deflection unit 2000 and deflected in the second direction, thereby irradiating the light to the outside of the light emitting module 10 of the present invention. Thus, the light emitting module 10 of the present invention can realize surface emission.

[0090] At this time, the light emitted from the multiple first light sources 1100 along the first direction moves a first distance between the substrate 1000 and the deflection unit 2000, and the light deflected along the second direction by the deflection unit 2000 moves a second distance between the substrate 1000 and the deflection unit 2000, so that at least a portion of the light passes through the substrate 1000 and irradiates the outside of the light-emitting module 10 of the present invention. Therefore, while the light travels back and forth between the substrate 1000 and the deflection unit 2000, the light travel path can be relatively long, and the space required for mixed light (i.e., the gap) can be relatively short, which is conducive to miniaturization.

[0091] In other words, in the case where a plurality of first light sources 1100 are provided on the front surface of the substrate 1000, the light emitted from the plurality of first light sources 1100 travels forward, and therefore it is necessary to ensure a gap of sufficient length for light mixing in a single direction (i.e., in front of the substrate 1000). In contrast, in the first embodiment of the present invention, the light emitted in a first direction from the plurality of first light sources 1100 provided on the rear surface of the substrate 1000 is reflected by the deflection portion 2000 provided at the rear of the substrate 1000 to deflect the light in a second direction, and therefore the travel path of the light overlaps between the substrate 1000 and the deflection portion 2000, so that the gap for light mixing can have a relatively short length.

[0092] For example, Figure 6As shown, in the case where a plurality of first light sources 1100 are provided on the front surface of the substrate 1000 to generate light toward the front, the deflection portion 2000 is omitted, and therefore the gap G1 required for mixing the light in front of the substrate 1000 is relatively long. On the contrary, in the first embodiment of the present invention, light emitted in a first direction from a plurality of first light sources 1100 provided on the rear surface of the substrate 1000 is reflected by the deflection portion 2000 provided at the rear of the substrate 1000 to deflect the light in a second direction. Therefore, compared with the case where a plurality of first light sources 1100 are provided on the front surface of the substrate 1000, the gap G2 required for mixing the light can have a length of approximately less than half.

[0093] As described above, when the light emitted from the plurality of first light sources 1100 moves the first distance and the second distance to illuminate the outside of the light emitting module 10 of the present invention, the thickness of the light emitting module 10 of the present invention can be thinner than the total length of the light path of the light emitted from the plurality of first light sources 1100, thereby facilitating miniaturization.

[0094] In other words, the thickness of the light-emitting module 10 of the present invention in the front-to-back direction may be different depending on the gap used to mix the light emitted from the multiple first light sources 1100. When the multiple first light sources 1100 are provided on the front surface of the substrate 1000, the light-emitting module 10 of the present invention has a thickness corresponding to the total length of the optical path of the light emitted from the multiple first light sources 1100. On the contrary, in an embodiment of the present invention, the light emitted from the multiple first light sources 1100 travels back and forth between the substrate 1000 and the deflection portion 2000 to irradiate to the outside, so the thickness of the light-emitting module 10 of the present invention has a thickness less than the total length of the optical path of the light emitted from the multiple first light sources 1100.

[0095] And, as Figure 7 As shown, when the gap G for mixing light is the same, light emitted along the first direction from the multiple first light sources 1100 arranged on the rear surface of the substrate 1000 toward the deflection part 2000 located behind the substrate 1000 can travel back and forth between the substrate 1000 and the deflection part 2000 and mix. Therefore, the setting spacing P2 of the multiple first light sources 1100 can be greater than the setting spacing P1 of the multiple first light sources 1100 when the multiple first light sources 1100 are arranged on the front surface of the substrate 1000. As a result, the number of required light sources is reduced, thereby reducing the number of components and reducing costs.

[0096] In the first embodiment of the present invention, in order to allow the light reflected by the deflection unit 2000 and deflected in the second direction to pass through the substrate 1000 and irradiate the outside, the case where the substrate 1000 is composed of a transparent printed circuit board (PCB) formed of a material such as polyester (PET: polyester) that can transmit light or transparent polyimide (CPI: Colorless Polyimide) is used as an example for explanation. However, this is only an example to help understand the present invention and is not limited to this. The substrate 1000 can also be composed of an opaque PCB, and at least a portion of the opaque PCB is open, so that the light deflected in the second direction by the deflection unit 2000 can pass through the substrate 1000 and irradiate the outside. A detailed description of the case where the substrate 1000 is composed of an opaque PCB will be described later.

[0097] The deflection unit 2000 can be formed on at least a portion of a surface facing the substrate 1000 of a bracket 3000 located behind the substrate 1000 and supporting the substrate 1000. A transmissive material 4000 made of a light-transmitting material can be disposed between the substrate 1000 and the deflection unit 2000. The transmissive material 4000 allows light traveling between the substrate 1000 and the deflection unit 2000 to travel internally through total internal reflection, thereby preventing light loss due to light leakage. Furthermore, a diffusing substance can be added to the transmissive material 4000 for light diffusion. A detailed description of the method for forming the transmissive material 4000 will be provided later.

[0098] At this time, the bracket 3000 can be formed with a surface open to accommodate the substrate 1000, the deflection unit 2000 and the transmissive material 4000, and a cover 5000 can be assembled on the open surface of the bracket 3000 to form a receiving space for accommodating the substrate 1000, the deflection unit 2000 and the transmissive material 4000. The light that passes through the substrate 1000 and moves forward can pass through the cover 5000 and irradiate the outside, and the light that passes through the cover 5000 can be understood as the light irradiated to the outside from the light-emitting module 10 of the present invention.

[0099] In the first embodiment of the present invention, the deflection unit 2000 can be formed by depositing or coating a material with high reflectivity such as aluminum or chromium on at least a portion of the opposite surface of the bracket 3000 facing the substrate 1000, or by coating a paint with high reflectivity such as white, but is not limited to this. The deflection unit 2000 can be formed in a separate film form to be attached to at least a portion of the opposite surface of the bracket 3000 facing the substrate 1000.

[0100] The transmissive material 4000 can be formed with multiple receiving grooves 4110 on the front surface 4100 for receiving multiple first light sources 1100, and the rear surface can be set to be in close contact with the deflection part 2000, and as the multiple first light sources 1100 are respectively received in the multiple receiving grooves 4110, the substrate 1000 and the transmissive material 4000 can be set to be in close contact with each other.

[0101] In addition, if Figure 8 As shown, a diffusion sheet 1000a can be arranged in front of the substrate 1000 to diffuse the light reflected by the deflection unit 2000 and transmitted through the substrate 1000. When surface light emission is achieved through the light-emitting module 10 of the present invention, the diffusion sheet 1000a can play a role in improving the uniformity of brightness as a whole.

[0102] In the first embodiment of the present invention, the case where a diffusing substance is added to the transmissive material 4000 is used as an example for explanation, but the present invention is not limited to this. Not only the transmissive material 4000, but also the components of the transmissive light such as the substrate 1000, the diffuser 1000a and the cover 5000 can be added with a diffusing substance.

[0103] at this time, Figure 8 This is an example of a case where the diffusion sheet 1000 a is located in front of the substrate 1000 , but the present invention is not limited thereto. The diffusion sheet 1000 a may be located in at least one of the front and rear of the substrate 1000 .

[0104] Furthermore, the plurality of first light sources 1100 may also emit light of a specific color and emit excitation light to excite the phosphor. In the case where the light emitted from the plurality of first light sources 1100 acts as the excitation light, as shown in FIG. Figure 9 The phosphor sheet 1000b including phosphors may be located in front of the substrate 1000 as shown, or as Figure 10 As shown, the fluorescent sheet 1000 b may be located in front of the deflecting unit 2000 .

[0105] Figure 9 As an example, the fluorescent sheet 1000b is located in front of the diffusion sheet 1000a in front of the substrate 1000, and Figure 10 This is an example of a case where the fluorescent sheet 1000 b is located in front of the deflecting unit 2000 , but the present invention is not limited thereto. The fluorescent sheet 1000 b may be located behind the substrate 1000 or behind the deflecting unit 2000 .

[0106] and, Figure 9 and Figure 10 As an example of a case where the diffusion sheet 1000 a is located in front of the substrate 1000 , the diffusion sheet 1000 a may be omitted when light is sufficiently diffused.

[0107] In the first embodiment of the present invention, as the fluorescent sheet 1000b, a case where a transmissive phosphor is used in which fluorescence generated by being excited by excitation light is emitted through the side opposite to the side on which the excitation light is incident is described as an example, but the invention is not limited to this. Depending on the position of the fluorescent sheet 1000b, a reflective phosphor that emits fluorescence through the side on which the excitation light is incident may be used.

[0108] The fluorescent sheet 1000 b may convert the first light having a first wavelength region emitted from the plurality of first light sources 1100 into the second light having a second wavelength region.

[0109] At this time, the fluorescent sheet 1000b may include a fluorescent substance that can generate second light in a second wavelength range, and may also include a fluorescent substance that is excited by the first light to generate third light in a third wavelength range. In the case where the fluorescent sheet 1000b includes a fluorescent substance that can generate third light, the second light can be understood as being generated by mixing the first light directly transmitting the fluorescent sheet 1000b and the third light generated by the fluorescent substance in a predetermined ratio.

[0110] The purpose of generating the second light mixed with the first light and the third light by the fluorescent sheet 1000b is to ensure that the fluorescent substance has an appropriate content to prevent excessive fluorescent substance from acting as an element that hinders light transmission, thereby adversely affecting the efficiency of the fluorescent sheet 1000b. This fluorescent sheet 1000b is disclosed in Korean Patent Gazette No. 10-22-0029528.

[0111] Figure 11 is an exploded perspective view showing a light emitting module according to a second embodiment of the present invention, Figure 12 is a cross-sectional view showing a light emitting module according to a second embodiment of the present invention.

[0112] Reference Figure 11 and Figure 12 The light emitting module 10 according to the second embodiment of the present invention may include a substrate 1000 and a deflection unit 2000 similar to the above embodiment. The same reference numerals are used for components that play the same role as the above embodiment, and detailed description of their roles is omitted.

[0113] In a second embodiment of the present invention, the deflection unit 2000 may include: a reflective layer 2100 formed on at least a portion of the opposite surface of the bracket 3000 facing the substrate 1000; and a plurality of diffusion elements 2200 formed on the rear surface of the transmissive material 4000 to have a concave shape, so that light emitted from the plurality of first light sources 1100 along the first direction is deflected along the second direction.

[0114] In other words, in the second embodiment of the present invention, the deflection unit 2000 is composed of a reflective layer 2100 and a plurality of diffusion elements 2200 . In the first embodiment described above, the deflection unit 2000 may be composed of the reflective layer 2100 by omitting the plurality of diffusion elements 2200 .

[0115] The plurality of diffusion elements 2200 may refract or reflect the light emitted from the plurality of first light sources 1100 in the first direction according to the incident angle thereof to diffuse the light.

[0116] In the second embodiment of the present invention, the deflection of the plurality of diffusion elements 2200 along the second direction can be understood as the light being refracted or reflected along one or more directions different from the first direction according to the incident angle of the light toward the plurality of diffusion elements 2200 .

[0117] In the second embodiment of the present invention, the following situation will be used as an example for explanation: a plurality of diffusion elements 2200 corresponding to a plurality of first light sources 1100 are formed on the rear surface 4200 of the transmissive material 4000 at a predetermined interval, but it is not limited to this. A diffusion element can correspond to more than two light sources among the plurality of first light sources 1100, and vice versa.

[0118] Figure 13 is a cross-sectional view showing a first diffusion element according to a second embodiment of the present invention, Figure 13 FIG. 1 is an example showing a case where the first diffusion element corresponds to one of the plurality of first light sources 1100 .

[0119] Reference Figure 13 According to the second embodiment of the present invention, the diffusion element 2202 (hereinafter referred to as the "first diffusion element") can be formed to be rotationally symmetrical with respect to the central axis C of the first light source 1100, and the central axis C can be understood as the axis that passes vertically through the center of the light-emitting surface of the first light source 1100.

[0120] The first diffusion element 2202 may include a plurality of surfaces F11, F12, F13, F14, F15, and F16 formed at different positions along the radiation direction with the central axis C of the first light source 1100 as a reference. Each of the plurality of surfaces F11, F12, F13, F14, F15, and F16 may be understood as an interface between the inside and the outside of the transmissive material 4000, and each of the plurality of surfaces F11, F12, F13, F14, F15, and F16 may function to diffuse light by at least one of refraction and reflection of light.

[0121] In the second embodiment of the present invention, the first diffusion element 2202 may include a first surface F11 to a sixth surface F16 . Functions of the surfaces F11 , F12 , F13 , F14 , F15 , and F16 are described in detail below.

[0122] The first surface F11 may be centered on the central axis C and may be as follows: Figure 14 As shown, it plays a role in refracting the first light L11 incident from the first light source 110 so that the first light L11 moves in a direction away from the central axis C. The first light L11 refracted by the first surface F11 can be reflected by the reflective layer 2100 in a direction toward the substrate 1000, and can be refracted in a direction away from the central axis C by the second surface F12 described later.

[0123] The second surface F12 may be formed as follows: extending from one end connected to the edge of the first surface F11 so that the other end is away from the substrate 1000 along the central axis C, and compared with the one end of the second surface F12, the other end of the second surface F12 has a larger distance from the central axis C in the radial direction based on the central axis C. Figure 15 As shown, the second surface F12 can reflect the second light L12 incident from the first light source 1100 to move in a direction away from the central axis C, and as shown in FIG. Figure 14 As shown, the second surface F12 can refract the first light L11 refracted by the first surface F11 in a direction away from the central axis C.

[0124] like Figure 16 As shown, the third surface F13 may reflect the third light L13 generated from the first light source 1100 and cause the third light L13 to pass through the central axis C and travel in a direction away from the central axis C.

[0125] The fourth surface F14 can be formed concavely relative to the first light source 1100, connecting the other end of the second surface F12 to the other end of the third surface F13. The fourth surface F14 can prevent light from traveling in an unnecessary direction at the boundary between the second surface F12 and the third surface F13.

[0126] That is, when the second surface F12 and the third surface F13 are linearly connected, light may travel in an unexpected direction at the boundary thereof. Therefore, by making the fourth surface F14 have a curved surface shape with a predetermined curvature, as shown in FIG. Figure 17 As shown, the fourth light L14 incident on the boundary between the second surface F12 and the third surface F13 is refracted in a direction away from the central axis C.

[0127] The fifth surface F15 may extend along the central axis C so that the other end farther from the first light source 1100 has a larger distance from the central axis C in the radial direction than the end closer to the light source 110. Figure 18 As shown, it can reflect the fifth light L15 incident from the first light source 1100 so that the fifth light L15 travels in a direction away from the central axis C.

[0128] At this time, the other end of the fifth surface F15 is located at the rear surface 4200 of the transmissive material 4000, and the opening of the first diffusion element 2202 formed on the rear surface 4200 of the transmissive material 4000 defined by the other end of the fifth surface F15 can be formed to have a diameter that prevents hot spots from being generated by the first light source 1100.

[0129] In other words, when the opening diameter of the first diffusion element 2202 is small, the light emitted from the first light source 1100 may be reflected forward by the reflective layer 2100 without being fully diffused. In this case, the light irradiated from the periphery of the first light source 110 may produce a hot spot with a brightness relatively higher than the surrounding brightness. Therefore, it can be understood that the position of the other end of the fifth surface F15 is determined in such a way that the opening of the first diffusion element 2202 has a diameter of a sufficient size to prevent the generation of a hot spot.

[0130] The sixth surface F16 is formed to protrude relative to the first light source 1100, so that one end of the third surface F13 is connected to one end of the fifth surface F15, and can be formed to be separated from the first light source 1100 by a larger distance in the direction of the central axis C relative to the first surface F11. Figure 19 As shown, similar to the fourth surface F14, the sixth surface F16 has a curved shape with a predetermined curvature to prevent the sixth light L16 incident from the first light source 1100 from traveling in an unexpected direction, thereby refracting or reflecting the sixth light L16 and diffusing it.

[0131] As described above, the first diffusion element 2202 is formed to have an overall conical shape, so that the light emitted from the first light source 1100 is diffused by at least one of refraction and reflection, so that when surface light emission is achieved through the light-emitting module 10 of the present invention, the light emitted from the light-emitting module 10 of the present invention can have an overall uniform brightness.

[0132] Furthermore, in the embodiments of the present invention, the situations in which the first surface F11 to the sixth surface F16 of the first diffusion element 2202 refract (transmit) light, reflect light, and refract and reflect light are separately described, but this is merely an example to help understand the present invention and is not limited to this. The first surface F11 to the sixth surface F16 of the first diffusion element 2202 can refract or reflect light incident from the first light source 1100 according to the incident angle of the light incident on the surface.

[0133] Figure 20 is a schematic diagram showing a second diffusion element according to a second embodiment of the present invention, Figure 20 11 is an example showing a case where the second diffusion element corresponds to one of the plurality of first light sources 1100 .

[0134] Reference Figure 20 According to the second embodiment of the present invention, the diffusion element 2204 (hereinafter referred to as the "second diffusion element") is combined with the above-mentioned Figure 13 Similar to the first diffusion element 2202 , it is formed rotationally symmetrically with respect to the central axis C of the first light source 1100 , so that the light generated by the first light source 1100 is diffused, thereby achieving surface luminescence.

[0135] The second diffusion element 2204 may include a plurality of surfaces F21, F22, F23, and F24 formed at different positions relative to the central axis C of the first light source 1100 in the radiation direction, and each of the plurality of surfaces F21, F22, F23, and F24 may function to diffuse the light generated from the first light source 1100 by at least one of refraction and reflection.

[0136] The second diffusion element 2204 may include a first surface F21 to a fourth surface F24 as a plurality of surfaces F21, F22, F23, and F24. The functions of the surfaces F11, F12, F13, F14, F15, and F16 are described in detail below.

[0137] The first surface F21 may be formed to extend along the central axis C of the first light source 1100, and may be formed along the central axis C in such a manner that one end close to the first light source 1100 is spaced apart from the other end located at the central axis C by a larger distance in the radiation direction based on the central axis C. Figure 21 As shown, the first surface F21 can refract the first light L21 emitted from the first light source 1100 so as to make the light travel in a direction away from the central axis C.

[0138] The second surface F22 may be formed along the central axis C in the following manner: the second surface F22 is located outside the first surface F22 in the radiation direction relative to the central axis C, and the other end farther from the first light source 1100 has a larger distance relative to the other end closer to the first light source 1100 relative to the central axis C. Figure 22 As shown, the second surface F22 can reflect the second light L22 emitted from the first light source 1100 to make the light travel in a direction away from the central axis C.

[0139] The third surface F23 may be formed to have a predetermined curvature between one end of the first surface F21 and one end of the second surface F22. Figure 23 As shown, the third light L23 incident from the first light source 1100 to the vicinity of the boundary between one end of the first surface F21 and one end of the second surface F22 may be reflected or refracted to diffuse the light.

[0140] The fourth surface F24 may be formed along the central axis C in the following manner: from one end connected to the other end of the second surface F22, the other end is connected to the rear surface 4200 of the transmissive material 4000. The fourth surface F24 may be formed so that the other end has a larger spacing from the central axis C than the one end in the radiation direction, as shown in FIG. Figure 24 As shown, the fourth surface F24 can refract the fourth light L24 incident from the air to the transmissive material 4000 so as to make the light travel in a direction away from the central axis C.

[0141] In addition, if Figure 21 and Figure 23 As shown, when the first light L21 refracted by the first surface F21 and the third light L23 refracted by the third surface F23 are reflected forward by the reflective layer 2100, the fourth surface F24 can refract the light to move in a direction away from the central axis C.

[0142] As described above, the second diffusion element 2204 can be formed to have a dome shape as a whole, so that when the light emitted from the first light source 1100 is diffused by at least one of refraction and reflection, when surface light emission is achieved by the light-emitting module 10 of the present invention, the light emitted from the light-emitting module 10 of the present invention can have an overall uniform brightness.

[0143] Furthermore, in the second embodiment of the present invention, the situations of refracting (transmitting) light, reflecting light, and refracting and reflecting light by the first surface F21 to the fourth surface F24 of the second diffusion element 2204 are separately described, but this is merely an example to help understand the present invention and is not limited to this. The first surface F21 to the fourth surface F24 of the second diffusion element 2204 can refract or reflect the light incident from the first light source 110 according to the incident angle of the light incident on the surface.

[0144] In the second embodiment described above, the first diffusion element 2202 and the second diffusion element 2204 are described separately as the diffusion element 2200, but this is only an example to help understand the present invention and is not limited thereto. Figure 25 As shown, as the diffusion element 2200, the first diffusion element 2202 and the second diffusion element 2204 can also be formed together.

[0145] In addition, when multiple diffusion elements 2200 are formed on the rear surface of the transmissive material 4000, each of the multiple diffusion elements 2200 can refract or reflect the light incident from the adjacent light source according to the incident angle of the corresponding light source from the multiple first light sources 1100 and the light emitted from other adjacent light sources, thereby allowing the light to be diffused.

[0146] In the following, in an embodiment of the present invention, the case where the deflection unit 2000 includes a reflective layer 2100 and multiple diffusion elements 2200 is used as an example for explanation, but this is only an example to help understand the present invention and is not limited to this. The deflection unit 2000 may include the reflective layer 2100 and at least one of the multiple diffusion elements 2200.

[0147] In the above-mentioned second embodiment, the case of forming multiple diffusion elements 2200 corresponding to each of the multiple first light sources 1100 is described as an example, but it is not limited to this. The multiple diffusion elements 2200 can be formed to be located not only at positions corresponding to the multiple first light sources 1100, but also between the first light sources adjacent to each other in the multiple first light sources 1100.

[0148] Figure 26 is a perspective view showing a light emitting module according to a third embodiment of the present invention, Figure 27 is a cross-sectional view showing a light emitting module according to a third embodiment of the present invention, Figure 28 FIG. 1 is a schematic diagram illustrating a light path of a light emitting module according to a third embodiment of the present invention.

[0149] Reference Figures 26 to 28 The light emitting module 10 according to the third embodiment of the present invention may include a substrate 1000 and a deflection unit 2000 similar to the above embodiments. The same reference numerals are used for components that play the same role as the above embodiments, and detailed description of their roles is omitted.

[0150] In the third embodiment of the present invention, the plurality of diffusion elements 2200 may include: a plurality of first diffusion patterns 2210 corresponding to the plurality of first light sources 1100; and a plurality of second diffusion patterns 2220 formed between adjacent first diffusion patterns in the plurality of first light sources 1100.

[0151] Each of the multiple first diffusion patterns 2210 can cause the light L31 emitted from the corresponding first light source among the multiple first light sources 1100 to the first direction to be refracted or reflected according to the incident angle, and each of the multiple second diffusion patterns 2220 can be formed between the adjacent first diffusion patterns among the multiple first diffusion patterns 2210. Not only can the light L32 that deviates from the corresponding first diffusion pattern in the light generated by each of the multiple first light sources 1100 be diffused by refraction or reflection, but the light refracted or reflected and deflected by the multiple first diffusion patterns 2210 can also be refracted or reflected and deflected again by the multiple second diffusion patterns 2220 to improve the diffusion efficiency, thereby improving the dark shadow band that may occur between the adjacent first light sources among the multiple first light sources 1100.

[0152] In the third embodiment described above, the case where the plurality of second diffusion patterns 2220 and the plurality of first diffusion patterns 2210 are spaced apart from each other by a predetermined interval is taken as an example for description, but the present invention is not limited thereto. Figure 29 As shown, the plurality of second diffusion patterns 2220 may also be formed to have a partition wall shape that continuously connects the first diffusion patterns adjacent to each other in at least one direction.

[0153] In addition, in the third embodiment of the present invention, the case where multiple second diffusion patterns 2220 play a role in improving the shadow bands that may be generated between multiple first light sources 1100 is used as an example for explanation, but it is not limited to this. The light-emitting module 10 of the present invention can also play a role in enabling it to be used with more than two functions.

[0154] Figure 30 is an exploded perspective view showing a light emitting module according to a fourth embodiment of the present invention, Figure 31 is a cross-sectional view showing a light emitting module according to a fourth embodiment of the present invention.

[0155] Reference Figure 30 and Figure 31 The light emitting module 10 according to the fourth embodiment of the present invention may include a substrate 1000 and a deflection unit 2000 similar to the above embodiments. The same reference numerals are used for components that play the same role as the above embodiments, and detailed descriptions of their roles are omitted.

[0156] In the fourth embodiment of the present invention, not only a plurality of first light sources 1100 can be provided on the rear surface of the substrate 1000, but also a plurality of light sources 1200 (hereinafter referred to as "second light sources") located between the first light sources adjacent to each other among the plurality of first light sources 1100 can be provided. The plurality of first light sources 1100 and the plurality of second light sources 1200 can be arranged alternately in at least one direction, and a plurality of first diffusion patterns 2210 can be formed corresponding to the plurality of first light sources 1100, and a plurality of second diffusion patterns 2220 can be formed corresponding to the plurality of second light sources 1200.

[0157] At this time, a plurality of second light sources 1200 are disposed on the rear surface of the substrate 1000 together with the plurality of first light sources 1100 . This is to enable the light emitting module 10 of the present invention to be used together with different functions.

[0158] For example, when white light is generated from multiple first light sources 1100 and amber light is generated from multiple second light sources 1200, the light emitting module 10 of the present invention can function as a daytime running light when the multiple first light sources 1100 are lit, and conversely, can function as a turn signal light when the multiple second light sources 1200 are lit.

[0159] Furthermore, when red light is generated from the plurality of first light sources 1100 and amber light is generated from the plurality of second light sources 1200, the light emitting module 10 of the present invention can function as a brake light when the plurality of first light sources 1100 are turned on, and conversely, can function as a signal light when the plurality of second light sources 1200 are turned on.

[0160] In the fourth embodiment of the present invention, the following situation is taken as an example for description: according to the function of the light-emitting module 10 of the present invention, one of the multiple first light sources 1100 and the multiple second light sources 1200 is turned on and the other is turned off, but it is not limited to this. The multiple first light sources 1100 and the multiple second light sources 1200 are turned on at the same time, and the amount of light emitted from each light source is controlled to generate light of a color that is a mixture of the color of the light generated from the multiple first light sources 1100 and the color of the light generated from the multiple second light sources 1200, so that more diverse colors can be achieved, so that the light-emitting module 10 of the present invention can be used for more functions.

[0161] At this time, in the fourth embodiment of the present invention, the case where the light-emitting module 10 generates two colors of light, such as multiple first light sources 1100 and multiple second light sources 1200, is used as an example for explanation, but this is only an example to help understand the present invention and is not limited to this. A light source that generates light with more than three different colors can also be set on the substrate 1000.

[0162] Hereinafter, in the embodiments of the present invention, the case where multiple first light sources 1100 are provided on the substrate 1000 is described as an example, but it is not limited thereto. Even if multiple first light sources 1100 and multiple second light sources 1200 are provided together on the substrate 1000, it can be similarly applied.

[0163] In the above embodiment, the following example is used for description: at least a portion of the light refracted or reflected by the plurality of diffusion elements 2200 formed on the rear surface 4200 of the transmissive material 4000 is reflected in the second direction by the reflective layer 2100 formed on at least a portion of the surface of the bracket 3000 that faces the substrate 1000. However, the present invention is not limited thereto. At least a portion of the rear surface 4200 of the transmissive material 4000 may be deposited or coated with a material with high reflectivity, such as aluminum or chromium, or may be coated with a paint with high reflectivity, such as white light, so that at least a portion of the light emitted in the first direction from the plurality of first light sources 1100 can be deflected in the second direction.

[0164] Figure 32 is an exploded perspective view showing a light emitting module according to a fifth embodiment of the present invention, Figure 33 is a cross-sectional view showing a light emitting module according to a fifth embodiment of the present invention.

[0165] Reference Figure 32 and Figure 33 The light emitting module 10 according to the fifth embodiment of the present invention may include a substrate 1000 and a deflection unit 2000 similar to the above embodiments. The same reference numerals are used for components that play the same role as the above embodiments, and detailed descriptions of their roles are omitted.

[0166] In the fifth embodiment of the present invention, the deflection unit 2000 may include a reflective layer 2100, a plurality of diffusion elements 2200, and a reflective surface 2300 formed on at least a portion of the rear surface 4200 of the transmissive material 4000. The reflective surface 2300 may be formed by depositing or coating a material with high reflectivity, such as aluminum, chromium, etc., on the rear surface 4200 of the transmissive material 4000, or by coating a coating with high reflectivity, such as white.

[0167] In the case where a reflective surface 4300 is formed on the rear surface 4200 of the transmissive material 4000, the reflective layer 2100 formed on the bracket 3000 can be omitted. However, in order to maximize the light reflection efficiency, even in the case where a reflective surface 4300 is formed on the rear surface 4200 of the transmissive material 4000, it is preferred to form the reflective layer 2100 on the bracket 3000. In the fifth embodiment of the present invention, the case where the reflective layer 2100 and the reflective surface 2300 are formed together will be described as an example.

[0168] That is, when there is light transmitted through the reflective surface 2300 formed on the rear surface 4200 of the transmissive material 4000 among the light emitted from the plurality of first light sources 1100 along the first direction, even if the amount of light transmitted through the reflective surface 2300 is small, it will cause light loss. Therefore, by forming a reflective layer 2100 on the bracket 3000, the light transmitted through the reflective surface 2300 is made to travel toward the substrate 1000, thereby improving light efficiency.

[0169] In the fifth embodiment of the present invention, the following example is used for description: the rear surface 4200 of the transmissive material 4000 is divided into a first region where the plurality of diffusion elements 2200 are formed and a second region where the plurality of diffusion elements 2200 are not formed, and the reflective surface 2300 is formed in the second region. However, the present invention is not limited thereto, and the reflective surface 2300 may be formed entirely on the rear surface 4200 of the transmissive material 4000.

[0170] Figure 34 is a cross-sectional view showing a light emitting module according to a sixth embodiment of the present invention.

[0171] Reference Figure 34 Unlike the fifth embodiment, the light emitting module 10 according to the sixth embodiment has a reflective surface 2300 formed on the entire rear surface 4200 of the transmissive material 4000. In this case, the reflective surface 2300 can be formed not only in the second area of ​​the rear surface 4200 of the transmissive material 4000 where the plurality of diffusion elements 2200 are not formed, but also in the first area where the plurality of diffusion elements 2200 are formed.

[0172] In the above Figures 32 to 34 The reason why the reflective surface 2300 is formed on at least a portion of the rear surface 4200 of the transmissive material 4000 is that when a portion and another portion of the rear surface 4200 of the transmissive material 4000 are separated from the opposite surface of the bracket 3000 facing the substrate 1000 at different intervals, a portion of the illuminated image formed by the light-emitting module 10 of the present invention has a brightness different from that of the other portion when observed from the outside, thereby preventing the occurrence of streaks.

[0173] In other words, when the reflective surface 2300 is not formed on the rear surface 4200 of the transmissive material 4000, if a portion and another portion of the rear surface 4200 of the transmissive material 4000 are spaced apart from the reflective layer 2100 formed on the surface of the bracket 3000 facing the substrate 1000 at different intervals, the degree of light diffusion may vary due to the thickness of the air layer formed between the rear surface 4200 of the transmissive material 4000 and the reflective layer 2100. Therefore, spots due to brightness differences may occur in the illuminated image formed by the light irradiated to the outside from the light-emitting module 10 of the present invention. In contrast, when the reflective surface 2300 is formed on at least a portion of the rear surface 4200 of the transmissive material 4000, even if a portion and another portion of the rear surface 4200 of the transmissive material 4000 are spaced apart from the surface of the bracket 3000 facing the substrate 1000 at different intervals, the illuminated image can have uniform brightness, thereby avoiding spots.

[0174] Figure 35 is an exploded perspective view showing a light emitting module according to a seventh embodiment of the present invention, Figure 36 is a cross-sectional view showing a light emitting module according to a seventh embodiment of the present invention, Figure 36 There are multiple diffusion elements 2200 such as Figures 26 to 28 An example of a case including a first diffusion pattern 2210 and a second diffusion pattern 2220 is shown.

[0175] Reference Figure 35 and Figure 36 The light emitting module 10 according to the seventh embodiment of the present invention may include a substrate 1000 and a deflection unit 2000 similar to the above embodiments. The same reference numerals are used for components that play the same role as the above embodiments, and detailed descriptions of their roles are omitted.

[0176] In the seventh embodiment of the present invention, each of the plurality of first light sources 1100 may be arranged to overlap at least a portion of a corresponding light diffusion layer among the plurality of light diffusion layers 6000. Figure 37 As shown, the light diffusion layer 6000 can reflect a portion of the light L4 deflected toward the second direction by the reflective layer 2100 and at least one of the multiple diffusion elements 2200, light L41, and transmit another portion of the light L42. The light L41 reflected by the light diffusion layer 6000 is again deflected by the reflective layer 2100 and at least one of the multiple diffusion elements 2200, so that the light irradiated from the light emitting module 10 of the present invention can have an overall uniform brightness.

[0177] at this time, Figure 37This is an example of a case where the plurality of diffusion elements 2200 are formed to correspond to the first diffusion patterns 2210 of the plurality of first light sources 1100 .

[0178] The light diffusion layer 6000 can be formed as a coating layer coated with white paint, which reflects a part of the light deflected by the deflection unit 2000 and reaching the vicinity of the corresponding first light source among the multiple first light sources 1100 and reflects another part, but is not limited to this. It can also be formed as a separate film form and attached.

[0179] Furthermore, in the seventh embodiment of the present invention, the case where the light diffusion layer 6000 is formed on the front surface of the substrate 1000 is used as an example for explanation, but the present invention is not limited to this. The light diffusion layer 6000 can also be formed on at least one of the front surface and the rear surface of the substrate 1000. In addition to the substrate 1000, it can also be formed on at least one of the front surface and the rear surface of a component that can transmit light, such as a diffusion sheet 1000a or a cover 5000.

[0180] Preferably, the size of such light diffusion layer 6000 is 1 to 6 times that of the first light source 1100. This is because when the light diffusion layer 6000 is smaller than the first light source 1100, the diffusion efficiency is low, and when the light diffusion layer 6000 is larger than 6 times the first light source 1100, the possibility of relatively reduced light efficiency is high.

[0181] In addition, as mentioned above Figure 37 As shown, the light diffusion layer 6000 can play the following role: a part of the light L4 deflected along the second direction L4 is reflected and another part of the light L42 is transmitted, so that the light irradiated from the light emitting module 10 of the present invention has an overall uniform brightness, while improving the shadow band formed by the rear surface of the first light source 1100 when observed from the front of the substrate 1000.

[0182] That is, when the first light source 1100 is arranged on the rear surface of the substrate 1000, the light-emitting surface of the first light source 1100 faces rearward rather than forward. Therefore, when observed from the front of the substrate 1000, a dark shadow band caused by the rear surface of the first light source 1100 may be formed. However, in the seventh embodiment of the present invention, due to the presence of a white light diffusion layer 6000, the dark shadow band generated by the rear surface of the first light source 1100 can be improved.

[0183] like Figure 38 and Figure 39As shown, the light diffusion layer 6000 can be formed to have a thickness that is thicker as it approaches the center of the first light source 1100. This is because, when the first light source 1100 is arranged on the rear surface of the substrate 1000, the light-emitting surface of the first light source 1100 is set to face the rear rather than the front. Therefore, when observed from the front of the substrate 1000, a dark shadow band may be formed due to the rear surface of the first light source 1100. Therefore, by making the light diffusion layer 6000 have a thickness that is thicker as it approaches the center of the first light source 1100, it is possible to prevent the relatively dark-shaped patterns formed due to the rear surface of the first light source 1100 from being unable to be observed from the front of the substrate 1000.

[0184] The reason why the light diffusion layer 6000 has a smaller thickness as it is farther away from the center of the first light source 1100 is that if the light diffusion layer 6000 as a whole has a thickness corresponding to the center of the first light source 1100 , light diffusion efficiency may decrease, and thus light efficiency may decrease.

[0185] at this time, Figure 38 This is an example of a case where the light diffusion layer 6000 is formed as a single layer and is formed obliquely so that the thickness becomes thinner as it moves from the center toward the edge. Figure 39 This is an example of a situation in which the light diffusion layer 6000 is composed of multiple stacked layers 6100, 6200, and 6300, and the layers located at the upper end in the stacking direction have shorter lengths in at least one direction based on the center of the first light source 1100, thereby reducing their area, and thus having thicker thicknesses as they get closer to the center of the first light source 1100.

[0186] In the above Figure 38 and Figure 39 The reason why the light diffusion layer 6000 has a thickness that is thicker as it approaches the center of the first light source 1100 is that a pattern having a relatively darker shape is formed as it approaches the center of the first light source 1100 .

[0187] Figure 40 is a perspective view showing a light emitting module according to an eighth embodiment of the present invention, Figure 41 yes Figure 40 The BB' line cross section, Figure 41 like Figures 26 to 28 FIG. 1 shows an example in which the plurality of diffusion elements 2200 include a first diffusion pattern 2210 and a second diffusion pattern 2220 .

[0188] Reference Figure 40 and Figure 41The light emitting module 10 according to the eighth embodiment of the present invention may include a substrate 1000 and a deflection unit 2000 similar to the above embodiments. The same reference numerals are used for components that play the same role as the above embodiments, and detailed descriptions of their roles are omitted.

[0189] In the eighth embodiment of the present invention, the cover 5000 can be formed so that the multiple optical elements 5100 have a concave shape at a position corresponding to each of the multiple first light sources 1100, and the multiple optical elements 5100 can play a role in improving the shadow bands generated by the multiple first light sources 1100 being arranged on the rear surface of the substrate 1000.

[0190] Multiple optical elements 5100 can be formed on at least one of the front surface and the rear surface of the cover 5000. When the light emitted from the multiple first light sources 1100 along the first direction is deflected toward the second direction by the deflection unit 2000 and passes through the substrate 1000, a portion of the light passing through the substrate 1000 is deflected so that the brightness of the area corresponding to each of the multiple first light sources 1100 becomes relatively higher, thereby improving the dark shadow band generated by each of the multiple first light sources 1100 together with the light diffusion layer 6000 of the above-mentioned seventh embodiment.

[0191] at this time, Figure 40 and Figure 41 As an example of a case where a light diffusion layer 6000 is formed at positions corresponding to the multiple first light sources 1100 on the front surface of the substrate 1000, and multiple optical elements 5100 having a concave shape are formed at positions corresponding to the multiple first light sources 1100 on the front surface of the cover 5000, but the present invention is not limited to this. The multiple optical elements 5100 can be formed on at least one of the front surface and the rear surface of the cover 5000.

[0192] The plurality of optical elements 5100 can function as follows Figure 42 By deflecting the light transmitted through the light diffusion layer 6000 as shown, it is possible to prevent the plurality of first light sources 1100 from forming dark shadow bands due to the light deflected by the plurality of optical elements 5100 when viewed from the front of the substrate 1000 .

[0193] In the eighth embodiment of the present invention, the following situation is used as an example for description: a portion of the light transmitted through the substrate 1000 is scattered by multiple optical elements 5100, so that when observed from the front of the substrate 1000, the shadow band caused by the multiple first light sources 1100 is improved, but it is not limited to this. The multiple optical elements 5100 can deflect a portion of the light transmitted through the substrate 1000 to improve the shadow band caused by the multiple first light sources 1100 depending on the viewpoint from the outside, and improve the shadow band by diffusion, scattering, aggregation or a combination thereof.

[0194] In the eighth embodiment, the following situation is used as an example for explanation: a plurality of optical elements 5100 are formed together with the light diffusion layer 6000 to improve the shadow band generated by the plurality of first light sources 1100 being arranged on the rear surface of the substrate 1000, but this is not limited to this. The shadow band can be improved by using the light diffusion layer 6000 and one of the plurality of optical elements 5100.

[0195] Figure 43 is a schematic diagram showing a brightness measurement line of a light emitting module according to an embodiment of the present invention, Figure 44 Schematic diagram showing brightness distribution of a light emitting module according to an embodiment of the present invention, line D1-D1' can be understood as a line passing through a plurality of first light sources 1100 along a direction, and line D2-D2' can be understood as a line passing between adjacent first light sources 110.

[0196] Reference Figure 43 and Figure 44 In the case where the plurality of first light sources 1100 are disposed on the front surface of the substrate 1000, the deflection unit 2000 of the above embodiment is not formed. Figure 42 As shown in (a), in the interval S corresponding to the light emitting surface of each of the plurality of first light sources 1100, the brightness becomes relatively high, thereby generating a hot spot, and due to insufficient mixing of light, the brightness between the first light sources adjacent to each other in the plurality of first light sources 1100 is relatively low. However, in the case of a deflection unit 2000 having a reflective layer 2100, a plurality of diffusion elements 2200, a reflective surface 2300, etc., as shown in FIG. Figure 42 As shown in (b), when the light emitted from the multiple first light sources 1100 arranged on the rear surface of the substrate 1000 is diffused by the reflective layer 2100 serving as the deflection part 2000 and the multiple diffusion elements 2200, in the D1-D1' line and the D2-D2' line, as the brightness relatively increases, the brightness difference relatively decreases, thereby achieving sufficient brightness in terms of surface luminescence while improving the uniformity of the overall brightness.

[0197] At this time, Figure 43 In (b), the reason why the brightness of the interval S corresponding to the plurality of first light sources 1100 is relatively reduced is that the plurality of first light sources 1100 are provided on the rear surface of the substrate 1000 and form a dark band when viewed from the front of the substrate 1000. In the case where at least one of the light diffusion layer 6000 and the plurality of optical elements 5100 is formed, as shown in FIG. Figure 43 As shown in (c), the dark area caused by the multiple first light sources 1100 being arranged on the rear surface of the substrate 1000 is improved, so that the overall brightness difference in the D1-D1' line and the D2-D2' line is reduced, and a surface light source with uniform brightness can be achieved by the light-emitting module 10 of the present invention.

[0198] Figure 45 is a schematic diagram showing a manufacturing process of a light emitting module according to an embodiment of the present invention, Figure 45 This is an example of a case where both the reflective layer 2100 and the diffusion element 2200 are formed as the deflecting unit 2000 and the cover 5000 is omitted.

[0199] Reference Figure 45 In the manufacturing process of the light-emitting module 10 according to an embodiment of the present invention, first, a mold 7100 (①) for forming a transmissive material 4000 is placed behind a substrate 1000 having a plurality of first light sources 1100 provided on the rear surface thereof, and the internal space of the mold 7100 is filled with a molding material M (②) for forming the transmissive material 4000.

[0200] After filling the molding material M, in order to form the plurality of diffusion elements 2200 , the mold cover 7200 having the protrusions 7210 is placed on the mold 7100 , and the molding material M is cured to mold the transmissive material 4000 having the plurality of diffusion elements 2200 ( ③ ).

[0201] After the transmissive material 4000 is formed, the mold cover 6200 is removed, and the bracket 3000 having the reflective layer 2100 formed on at least a portion of the opposite surface facing the substrate 1000 is placed (④).

[0202] In the above Figure 45 In the embodiment, the case where the transmissive material 4000 is formed by solidifying the molding material filled on the rear surface of the substrate 1000 is used as an example for explanation, but this is only an example to help understand the present invention and is not limited to this. The transmissive material 4000 can also be manufactured through a separate manufacturing process and bonded to the rear of the substrate 1000.

[0203] In the above embodiment, a transparent PCB is used as an example of the substrate 1000 , but the present invention is not limited thereto. The substrate 1000 may be formed of an opaque PCB and may be partially open to allow light deflected by the deflection unit 2000 to pass therethrough.

[0204] Figure 46 and Figure 47 is a perspective view showing a substrate having an opening portion formed therein according to an embodiment of the present invention, Figure 48 is a cross-sectional view showing a substrate in which an opening portion is formed according to an embodiment of the present invention, Figure 48 This is an example of a case where the plurality of diffusion elements 2200 are omitted from the deflection unit 2000 and the reflection layer 2100 is formed.

[0205] Reference Figures 46 to 48Even in the case where the substrate 1000 is formed of an opaque PCB formed of an opaque material such as FR4 or metal, when a plurality of opening portions 1300 are formed on the substrate 1000 to open between adjacent first light sources among the plurality of first light sources 1100, at least a portion of the light deflected toward the second direction by the deflection portion 2000 is irradiated toward the outside of the light-emitting module 10 of the present invention through the plurality of opening portions 1300 formed on the substrate 1000. Therefore, similar to the above-mentioned embodiment, surface light emission can be achieved by the light-emitting module 10 of the present invention.

[0206] At this time, an opaque PCB is used as the substrate 100 because, compared with a transparent PCB, an opaque PCB can apply a high current and has excellent heat resistance. When a high current needs to be applied to the light-emitting module 10 according to the present invention and high heat resistance is required, an opaque PCB is used instead of a transparent PCB as the substrate 1000, and a plurality of openings 1300 are formed in the substrate 1000, so that the light deflected by the deflection unit 200 moves forward.

[0207] At this time, when an opaque PCB is used as the substrate 100, there are parts in the substrate 1000 through which light cannot penetrate due to the arrangement and wiring of multiple first light sources 1100, thereby possibly forming unnecessary dark bands. Therefore, a diffusion sheet for light diffusion is provided at at least one of the front and rear sides of the substrate 1000 to diffuse the light passing through the multiple openings 1300, thereby preventing the formation of unnecessary dark bands.

[0208] Figure 49 is a perspective view showing a vehicle lamp according to an embodiment of the present invention, Figure 50 is a side view showing a vehicle lamp according to an embodiment of the present invention.

[0209] Reference Figure 49 and Figure 50 According to an embodiment of the present invention, a vehicle lamp 1 may include a light emitting module 10 and a diffusion lens 20 . The light emitting module 10 may be understood as the light emitting module 10 of the above embodiment.

[0210] In the diffusion lens 20, at least one of the incident surface and the exit surface may be corroded, or a diffusion pattern may be formed on at least one of the incident surface and the exit surface so as to diffuse the light when the light irradiated from the light emitting module 10 through the cover 5000 is irradiated toward the outside of the vehicle. Thus, when observed from the outside of the vehicle, a surface light source having an overall uniform brightness can be formed by the light irradiated from the vehicle lamp 1 according to the present invention.

[0211] At this time, the diffusion lens 20 can protect the light emitting module 10 from being damaged due to external impact and the like and diffuse light.

[0212] As described above, in the light-emitting module according to the present invention and the vehicle lamp including the light-emitting module, a plurality of first light sources 1100 can be arranged on the rear surface of the substrate 1000, and the light generated from the plurality of first light sources 1100 along the first direction can be deflected toward the second direction by the deflection portion 2000 located behind the substrate 1000. The light deflected toward the second direction can pass through the substrate 1000 and irradiate the outside. Therefore, the gap of light required to achieve surface light emission through the light-emitting module 10 according to the present invention can be relatively reduced, thereby achieving miniaturization while diffusing the light generated from the plurality of first light sources 1100, and can further improve the uniformity of the brightness of the surface light emission achieved by the light-emitting module 10 of the present invention.

[0213] A person with ordinary knowledge in the technical field to which the present invention belongs will surely understand that the present invention can be implemented in other specific forms without changing the technical concept or essential features. Therefore, the embodiments described above are exemplary in all aspects and should be understood as non-limiting embodiments. The scope of the present invention is not limited by the foregoing detailed description, but by the claims, and all changes or modifications that can be derived from the meaning, scope and equivalent concepts of the claims should be interpreted as being included in the scope of the present invention.

Claims

1. A light emitting module, comprising: A substrate formed of a transparent material; at least one light source, disposed on the rear surface of the substrate to emit light in a first direction; as well as a deflection unit, located behind the substrate, to deflect the light emitted in the first direction toward a second direction, Wherein, the deflection unit comprises: A reflective surface is formed on at least a portion of a rear surface of a transmissive material, wherein the transmissive material is located between the substrate and a bracket located behind the substrate, wherein the bracket is used to support the substrate.

2. The light emitting module according to claim 1, wherein: The deflection unit further comprises: At least one diffusion element is formed on the rear surface of the transmissive material, and causes at least a portion of the light emitted in the first direction to be refracted or reflected and deflected in the second direction according to an incident angle of the light emitted in the first direction.

3. The light emitting module according to claim 1, wherein: The rear surface of the transmissive material includes a first area where the at least one diffusion element is formed and a second area where the at least one diffusion element is not formed, The reflective surface is formed in at least one of the first region and the second region.

4. The light emitting module according to claim 1, wherein: The reflective surface is formed by depositing or coating a material capable of reflecting light.

5. The light emitting module according to claim 1, wherein: The reflective surface is formed by applying a paint having a color capable of reflecting light.

6. The light emitting module according to claim 1, wherein: The deflection unit further comprises: A reflective layer is formed on at least a portion of the opposite surface of the bracket facing the substrate.

7. The light emitting module according to claim 1, further comprising: At least one light diffusion layer is arranged to overlap with the at least one light source to diffuse the light passing near the at least one light source.

8. The light emitting module according to claim 7, wherein: The at least one light diffusion layer transmits a portion of the deflected light and reflects another portion of the deflected light.

9. The light emitting module according to claim 7, wherein: The at least one light diffusion layer is formed to have a thickness that increases toward a center of the at least one light source.

10. The light emitting module according to claim 7, wherein: The at least one light diffusion layer is formed in the following manner: It is formed by stacking a plurality of layers. A layer located at an upper side in the stacking direction of the plurality of layers has a shorter length in at least one direction based on the center of the at least one light source.

11. The light emitting module according to claim 7, wherein: The at least one light diffusion layer is formed on a surface of at least one of the substrate and a cover located in front of the substrate, and the cover transmits at least a part of the light deflected by the deflection unit.

12. The light emitting module according to claim 1, further comprising: The cover is located in front of the substrate and transmits at least a portion of the light deflected by the deflection unit. At least one optical element is formed at a position corresponding to the at least one light source and deflects the light transmitted through the substrate.

13. A vehicle lamp, comprising: A light emitting module, comprising at least one light source; as well as a diffusion lens, located in front of the light emitting module to diffuse the light irradiated from the light emitting module, The direction in which the light is irradiated from the light emitting module is different from the direction in which the light is emitted from the at least one light source.

14. The vehicle lamp according to claim 13, wherein: The light emitting module comprises: a substrate, on the rear surface of which the at least one light source is disposed; a bracket, located behind the base plate to support the base plate; a transmissive material disposed between the substrate and the bracket; and A cover is located in front of the substrate and is assembled with the bracket to form a space for accommodating the substrate and the transmissive material. At least one optical element is formed on the cover, and the at least one optical element is formed at a position corresponding to the at least one light source to deflect at least a portion of the light transmitted through the substrate.

15. The vehicle lamp according to claim 14, wherein: The transmissive material has at least one diffusion element formed on the rear surface thereof, so that light emitted from the at least one light source in the first direction is deflected in the second direction. A reflective surface for reflecting at least a portion of the light emitted from the at least one light source toward the first direction is formed on at least a portion of the rear surface of the transmissive material.

16. The vehicle lamp according to claim 15, wherein: The at least one diffusion element refracts or reflects the light emitted in the first direction according to an incident angle of the light emitted in the first direction, so that at least a portion of the light emitted in the first direction is deflected toward the second direction.

17. The vehicle lamp according to claim 14, further comprising: A reflective layer is formed on at least a portion of the opposite surface of the bracket facing the substrate.

18. The vehicle lamp according to claim 14, further comprising: at least one light diffusion layer arranged to overlap the at least one light source, The at least one light diffusion layer reflects a portion of light passing through the vicinity of the at least one light source and transmits another portion.

19. The vehicle lamp according to claim 18, wherein: The at least one light diffusion layer is formed to have a thickness that increases toward a center of the at least one light source.

20. The vehicle lamp according to claim 18, wherein: The at least one light diffusion layer is formed in the following manner: It is formed by stacking a plurality of layers. A layer located at an upper side in the stacking direction of the plurality of layers has a shorter length in at least one direction based on the center of the at least one light source.

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