Lighting equipment

Abstract

To provide a lighting device capable of improving the heat dissipation capability of a board, thereby improving the reliability of a light emitting module.SOLUTION: A lighting device 1000 includes: a light emitting module 600 comprising a circuit board 300, a plurality of light emitting devices 400 disposed on the circuit board 300, a connector for supplying power to the light emitting device 400, a resin layer 500 covering the light emitting device 400 and a phosphor layer disposed on the resin layer 500; a coupling member 200 disposed under the light emitting module 600; and a bracket 100 coupled to the coupling member 200.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The embodiment of the invention can effectively combine a light emitting module and a bracket to provide a surface light source. The present invention relates to a lighting device. [Background technology]

[0002] Typical lighting applications include vehicle lighting as well as display and signboard lighting. Includes backlight.

[0003] Light-emitting elements, such as light-emitting diodes (LEDs), consume less electricity than existing light sources such as fluorescent lamps and incandescent lamps. It has the advantages of low power consumption, semi-permanent life, fast response speed, safety, and environmental friendliness. Such light emitting diodes are used in various display devices, indoor and outdoor lighting, and other lighting devices. It has been applied.

[0004] Recently, lamps that use light-emitting diodes have been proposed as vehicle light sources. Compared to thermal lamps, light-emitting diodes have the advantage of low power consumption. The light emitting module includes a light emitting diode arranged on a substrate, and the light emitting module is connected to a bracket. Previously, the bracket and the light-emitting module were attached using hooks, rivets, etc. However, this conventional method has the disadvantage of blocking the light-emitting surface of the light-emitting module. However, the process is complicated, and there is a problem that the light-emitting module may come off the bracket due to external force. Ta. Summary of the Invention [Problem to be solved by the invention]

[0005] The lighting device according to the embodiment is a light emitting module and a bracket that are connected together through a simple process. It is possible. The bonding strength between the light emitting module and the bracket according to the embodiment can be improved. do.

[0006] The lighting device according to the embodiment improves the heat dissipation capability of the substrate and improves the reliability of the light-emitting module. It can be done. [Means for solving the problem]

[0007] The embodiment is a light emitting module including a circuit board and a plurality of light emitting elements disposed on the circuit board. and a coupling member coupled to a lower surface of the circuit board, the coupling member being configured to couple the circuit board to the lower surface of the circuit board. The substrate is disposed on a lower surface of the substrate, and has a first side surface and a second side surface opposite to the first side surface. a third side connected to the first side and the second side, and a fourth side opposite to the third side; a head portion including a first support portion extending vertically from one end of the head portion; A second support portion extending vertically from the other end of the head portion, and a second support portion extending vertically from the first support portion to the first support portion. a first elastic portion that is bent toward the outside of the support portion; A second elastic portion that is bent in a lateral direction, and a first elastic portion that is bent in a direction from an end of the first elastic portion toward the first support portion. a first release prevention portion extending from an end of the second elastic portion toward the second support portion; a second detachment prevention portion extending from an end of the first detachment prevention portion toward a lower surface of the circuit board; a first leg portion extending from an end of the second separation prevention portion toward a lower surface of the circuit board; and a second leg portion, the first leg portion having a plurality of first elastic pieces, the second leg portion having a plurality of first elastic pieces. The first leg portion has a plurality of second elastic pieces, and the first elastic pieces of the first leg portion The second elastic piece of the second leg portion is inclined outward from the second leg portion. The lighting device may include a lighting device that is tilted in the direction of the light.

[0008] In the head portion of the lighting device according to the embodiment, the width between the first side surface and the second side surface is the width between the first side and the second side of the head portion is greater than the width between the third side and the fourth side a second head portion extending inward from the first head portion and connecting the second head portion to the second head portion; It may include a first head portion.

[0009] The width between the third side surface and the fourth side surface of the second head portion of the lighting device according to the embodiment is , which is greater than the width between the third side surface and the fourth side surface of the first head portion, The dome portion may include an opening.

[0010] The first head portion of the lighting device according to the embodiment has recesses on the third side surface and the fourth side surface. The groove may include a groove formed in the groove.

[0011] The first and second detachment prevention parts of the lighting device according to the embodiment are is extended in a direction parallel to A connecting portion between the first support portion and the first elastic portion of the lighting device according to the embodiment, and the second support a connecting portion between the first elastic portion and the second elastic portion, and a connecting portion between the first elastic portion and the first separation prevention portion and a connecting portion between the second elastic portion and the second separation prevention portion are curved surfaces. This is also fine.

[0012] A virtual straight line passing through the first elastic portion and a virtual straight line passing through the first support portion of the lighting device according to the embodiment The angle between the straight lines is an acute angle, and the imaginary straight line passing through the second elastic portion and the second support portion The angle between the imaginary straight line passing through the first separation prevention portion and the imaginary straight line passing through the first separation prevention portion is an acute angle. The angle between the imaginary straight lines passing through the first elastic portion is an acute angle, and the imaginary straight lines passing through the second separation prevention portion are The angle between this line and a virtual line passing through the second elastic portion may be an acute angle.

[0013] The first leg portion and the second leg portion of the lighting device according to the embodiment are A first leg portion extending perpendicularly from an end of the second separation prevention portion and the second separation prevention portion; a 2-1 leg portion, and a first leg portion extending from the 1-1 leg portion and the 2-1 leg portion; -2 leg portion and 2-2 leg portion, and the 1-1 leg portion and the 2-1 leg portion The first elastic piece and the second elastic piece may extend from the first elastic piece and be inclined outward. Cut. Effect of the Invention

[0014] The embodiment provides a lighting device with improved connection strength between a bracket and a light emitting module. can be done. Embodiments can provide a lighting device that includes a substrate with improved heat dissipation capabilities. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a plan view of a lighting device according to an embodiment. [Diagram 2] FIG. 2 is a cross-sectional view of the lighting device according to the embodiment taken along line AA'. [Diagram 3] FIG. 3 is a perspective view of a coupling member according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view of a region B of the lighting device according to the embodiment. [Figure 5a-5b] 5a and 5b are plan views of a coupling member according to an embodiment. [Figure 6] FIG. 6 is a right side view of the connecting member according to the embodiment. [Figures 7a-7c]7a to 7c are cross-sectional views showing a process of assembling another lighting device according to the embodiment. [Figure 8a-8b] 8a and 8b are diagrams showing a comparison of the heat dissipation capabilities of the comparative example and the embodiment. [Figure 9] FIG. 9 is a plan view of a vehicle to which a lamp including an illumination device according to the embodiment is applied. [Figure 10] FIG. 10 is a diagram showing a lamp having a lighting device according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical concept of the present invention is not limited to the embodiments described herein, and may be modified in various ways. The present invention can be embodied in various forms, and the components between the embodiments can be combined within the scope of the technical concept of the present invention. can be used in combination or in place of one another. All terms (including technical and scientific terms) to which the present invention pertains are intended unless expressly and specifically stated. The meaning of the term is interpreted as being commonly understood by a person having ordinary skill in the art and is not limited to the dictionary definition. Commonly used terms such as those mentioned above should be interpreted in light of the contextual meaning of the technology involved. In addition, the terms used in the embodiments of the present invention are intended to be understood as meanings that are consistent with the embodiments. It is for the purpose of illustration only and is not intended to limit the invention.

[0017] In this specification, the singular form can include the plural form unless otherwise specified. If it says "A and at least one of B and C (or more than one)," it means A, B and C. The present invention can include one or more of all possible combinations. In describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. Such terms are used to distinguish the component from other components. The terms are not intended to limit the nature or order of the components. When an element is described as being "coupled," "connected," or "connected" to another element, The components may be directly connected or connected to other components, or may be connected to each other. Furthermore, this includes all cases in which other components are "connected," "coupled," or "connected."

[0018] In addition, when it is described that a component is formed or placed "above or below," the "At or below" refers not only to cases where two components are in direct contact, but also to cases where one or more further components are in contact. This also includes cases where a component is formed or placed between two components. When expressed, it refers to not only the upward direction but also the downward direction based on one component. It can include.

[0019] The lighting device according to the present invention can be used in a variety of lamp devices that require illumination, such as vehicle lamps, It can be applied to home lighting devices or industrial lighting devices, for example, vehicle lamps. When driving, headlamps, width lamps, side mirror lamps, fog lamps, tail lamps, control lamps, etc. Moving lights, daytime running lights, vehicle interior lighting, door scuffs, rear combination lamps, back The lighting device of the present invention can be applied to indoor and outdoor advertising devices, display devices, etc. It can also be applied to various electric vehicles, and other fields are currently being developed and commercialized. All lighting-related fields and advertising-related fields that can be realized through future technological developments It can be said that the present invention can be applied to the following:

[0020] FIG. 1 is a plan view of a lighting device 1000 according to an embodiment, and FIG. 2 is a plan view of another lighting device according to the embodiment. 1 is a cross-sectional view of the device 1000 taken along line A-A'. As shown in FIG. 1 and FIG. 2, the lighting device 1000 according to the embodiment includes a circuit board 300. A plurality of light emitting elements 400 disposed on the circuit board 300; a connector 320 for supplying power to the light emitting element 400; a resin layer 500 for covering the light emitting element 400; A light emitting module 600 having a phosphor layer (not shown) disposed on the lipid layer 500; The light emitting module 600 is connected to the coupling member 200. and a bracket 100 for supporting the bracket.

[0021] The lighting device 1000 emits light emitted from the light emitting element 400 as a surface light source. A plurality of the light emitting elements 400 may be disposed on the circuit board 300. In the lighting device 1000, the plurality of light emitting elements 400 are arranged in N rows (N is an integer of 1 or more). The light emitting elements 400 may be arranged in M ​​rows or / and M rows (M is an integer of 1 or more). As shown in FIG. 1, the pixels may be arranged in N columns and M rows (N and M are integers of 2 or more).

[0022] The lighting device 1000 can be used for various lamp devices that require illumination, such as vehicle lamps, It can be applied to home lighting devices and industrial lighting devices. For example, it can be used as a lighting device for vehicle lamps. For the lighting module, headlamps, width lights, side mirror lights, fog lights, tail lights (Tai l lamp), turn signal lamp, back up lamp, stop lamp, Daytime running lights, vehicle interior lighting, door scarf, rear It can be applied to combination lamps, backup lamps, etc.

[0023] The circuit board 300 is a base member located under the plurality of light emitting elements 400 and the resin layer 500. The circuit board 300 may be a printed circuit board (PCB). For example, the circuit board 300 may include a resin-based Printed circuit board (PCB), Metal Core PCB, Flexible PCB, Ceramic The substrate may include at least one of a mixed PCB or an FR-4 substrate.

[0024] The upper surface of the circuit board 300 is an X-Y plane, and the thickness of the circuit board 300 is The height may be in a Z direction perpendicular to the Y direction. Here, the X direction is the first direction. The Y direction is a second direction perpendicular to the X direction, and the Z direction is a second direction perpendicular to the X direction and the Y direction. It may be a third direction.

[0025] The circuit board 300 includes a wiring layer (not shown) on the upper side. The wiring layer is a light emitting element. The circuit board 300 is electrically connected to a reflective layer 400 disposed on the wiring layer. A member or protective layer may be included, which can protect the wiring layer. The light emitting elements 400 are arranged in series, parallel, or series-parallel by the wiring layer of the circuit board 300. The light emitting devices 400 are connected in series or in parallel in groups of two or more. or the groups are connected in series or in parallel.

[0026] The length x1 in the first direction (X direction) and the length y1 in the second direction (Y direction) of the circuit board 300 are For example, the length x1 in the first direction may be longer than the length y1 in the second direction. The length x1 in the first direction may be set to be at least twice the length y1 in the second direction. The thickness z1 of the circuit board 300 is 1.0 mm or less, for example, 0.5 mm to 1.0 mm. Since the thickness z1 of the circuit board 300 is thin, the lighting The thickness of the circuit board 300 is not increased. m or less and can support flexible modules.

[0027] The thickness (z1+z2) of the light emitting module 600 is Even if it is less than 1 / 3 of the shorter of the lengths (x1, y1) in the first direction (Y direction) and the second direction (Y direction), However, the present invention is not limited to this. The thickness (z1+z2) of the light emitting module 600 is is 5.5 mm or less from the bottom of the circuit board 300, or is 4.5 mm to 5.5 mm The light emitting module 600 may have a thickness of 4.5 mm to 5 mm. The thickness (z1+z2) is the linear distance between the lower surface of the circuit board 300 and the upper surface of the resin layer 500. The thickness (z1+z2) of the light emitting module 600 may be The thickness z2 of the resin layer 500 is 220% or less, for example, in the range of 180% to 220%. The light emitting module 600 is provided with a thickness (z1+z2) of 5.5 mm or less. Therefore, it can be provided as a flexible and slim surface light source module.

[0028] When the thickness (z1+z2) of the light emitting module 600 is smaller than the above range, the light diffusion space If the temperature is reduced, hot spots will occur. If the temperature is greater than the above range, the module thickness will increase. The spatial installation constraints and the degree of freedom in design are reduced. Lighting device that can achieve curved surface structure by providing (z1+z2) of 5.5mm or less or 5mm or less This provides a greater degree of freedom in design and reduces space restrictions. The ratio of the length y1 of the illumination device 1000 in the Y direction to the thickness (z1+z2) of the ball 600 is 1:m, and may have a ratio relationship of m≧1, and m is at least 1. The number of rows of the light emitting elements 400 may be an integer smaller than m. For example, For example, when m is four times or more larger than the thickness (z1+z2) of the lighting device 1000, The 400 are arranged in four rows.

[0029] The circuit board 300 includes a connector 320 at a portion thereof, and supplies power to the light emitting element 400. The area where the connector 320 is arranged on the circuit board 300 can be provided. 310 is a region where the resin layer 500 is not formed, and is a region extending in the Y direction of the circuit board 300. The connector 320 is flush with the top surface of the circuit board 300. The connector 320 is disposed on the bottom surface of the circuit board 300. In this case, the region may be removed. The bar may be shaped like a square, a regular rectangle, or another polygonal shape, and may have a curved shape. The connector 320 may have a bar shape. It may be a male connector or a female connector.

[0030] The circuit board 300 may include a protective layer or a reflective layer on the upper portion. The reflective layer may include a member having a solder resist material, and the solder resist may The material is a white material and can reflect incident light.

[0031] As another example, the circuit board 300 may include a transparent material. Since a high-quality circuit board 300 is provided, the light emitted from the light-emitting element 400 is guided to the circuit board 300. The light is emitted toward the upper and lower surfaces of the substrate 300 .

[0032] The light emitting device 400 is disposed on the circuit board 300. The light emitting surface S1 faces the upper surface of the resin layer 500. The light emitting surface S1 is oriented in the direction of the resin layer 500, and the light emitting element 400 emits light in the direction of the resin layer 500. The upper surface of the light emitting device 400 is where most of the light is emitted. The light emitting device 400 includes at least four side surfaces and emits light in the lateral direction of the light emitting device 400. 400 is an LED chip that emits light from at least five sides and is mounted on the circuit board 300. The light emitting device 400 is arranged in a chip shape. The light emitting device 400 is formed to a thickness of 0.3 mm or less. This is also fine.

[0033] The light emitting device 400 may be implemented as a horizontal chip or a vertical chip, for example. In the case of the horizontal chip or vertical chip, the wires can be used to connect the chips to other chips or wiring. When a wire is connected to the LED chip, the wire The thickness of the diffusion layer increases according to the height of the wire, and the light-emitting element 4 is connected to the wire by the wire length. The distance between the luminance elements 100 and 100 increases. The light emitting device 400 is flip-chip mounted on the circuit board 300. The distance x2 between the light emitting elements 400 is determined by the thickness z2 of the resin layer 500 (z2 The spacing x2 between the light emitting elements 400 may be equal to or larger than x2. For example, it may be 2.5 mm or more, and may vary depending on the size of the LED chip. The minimum spacing between the elements 400 may be equal to or greater than the thickness z2 of the resin layer 500. good.

[0034] The light emitting device 400 disclosed in the embodiment is a flip chip that emits light from at least five sides. As a result, the luminance distribution and the directivity angle distribution of the light emitting device 400 are improved. When the light emitting elements 400 are arranged in an N×M matrix on the circuit board 300, N is M may have one or more columns and one or more rows. is an integer equal to or greater than 1. The light emitting elements 400 are arranged in the Y-axis and X-axis directions, .

[0035] The light emitting device 400 is a light emitting diode (LED) chip and emits blue, red, green, ultraviolet, The light emitting element 400 can emit at least one of ultraviolet (UV) light and infrared light. The light emitting element can emit at least one of blue, red, and green light. The terminal 400 is electrically connected to the circuit board 300, but is not limited thereto. stomach.

[0036] The plurality of light emitting elements 400 arranged on the circuit board 300 are supported by a resin layer 500. The light emitting elements 400 may be in contact with the resin layer 500 . The resin layer 500 is disposed on the side and top surfaces of the light emitting device 400 .

[0037] The light emitted from the light emitting device 400 is emitted through the resin layer 500. The light emitted from the light emitting element 400 is guided by the resin layer 500 and the The light is then emitted to the outside through a phosphor layer (not shown).

[0038] The resin layer 500 is made of a transparent resin material, for example, UV (Ultra Violet) resin, silicone, etc. The resin layer 500 may be made of a resin material such as polycarbonate or epoxy. The UV resin may be a diffusion layer or a molding layer. It is possible to use resin (oligomer type) whose main raw material is acrylate oligomer. For example, it is possible to use a synthetic oligomer, urethane acrylate oligomer. The main material is IBOA (isobornyl acrylate), a low-boiling point dilutable reactive monomer. Isobornyl acrylate), HBA (Hydroxybutyl Acrylate )), HEMA (Hydroxy Methethyl Acrylate), etc. The monomer may further include a photoinitiator (e.g., 1-hydroxyc yclohexyl phenyl-ketone, Diphenyl Phenyl), Diphenyl(2,4,6-trimethylbenzoyl phosphine oxide The UV-curable resin may be mixed with an antioxidant such as phenylphosphine oxide. It is composed of 10-21% oligomer, 30-63% monomer, and 1.5-6% additive. In this case, the monomer may be IBOA (isobornyl acrylic acid). acrylate (isobornyl acrylate) 10-21%, HBA (Hydroxybutyl Acrylate 10-21% HEMA (Hydroxy Methethyl Acrylate) The additive may be a mixture of 10 to 21% of methethyl acrylate. 1-5% of a photoinitiator can be added to initiate photoreactivity. The mixture can be made of a material that can improve the yellowing phenomenon by adding 0.5 to 1% of an anti-yellowing agent. The formation of the resin layer using the above-mentioned composition is carried out by forming a layer using a resin such as a UV resin instead of a light guide plate. By using the above-mentioned composition, it is possible to adjust the refractive index and thickness, and the adhesive properties and It is possible to ensure that both reliability and mass production speed are satisfied.

[0039] A phosphor layer (not shown) is disposed on the resin layer 500. The phosphor layer is disposed so as to cover the upper surface of the resin layer 500. The phosphor layer may include a transparent material. The phosphor layer may include a transparent insulating material. The phosphor layer may include a silicon material. The silicon material may be a silicon material having different chemical bonds. Silicon is a polymer made up of inorganic silicon and organic carbon, and acts as a thermal stabilizer for inorganic materials. Properties such as chemical stability, wear resistance, gloss, etc., and organic properties such as reactivity, solubility, and elasticity. Silicon has physical properties such as good workability. Silicon is either ordinary silicon or fluorine silicon with a high fluorine ratio. Increasing the fluorine ratio of fluorine silicone can improve moisture resistance. This has the effect of

[0040] The phosphor layer receives the light emitted from the light emitting element 400 and converts the wavelength of the light. For example, the phosphor layer may include a phosphor, a quantum dot, or a wavelength conversion means for providing a The phosphor may include at least one selected from the group consisting of phosphors, etc. Alternatively, quantum dots can emit blue, green, or red light.

[0041] The phosphor is uniformly distributed within the phosphor layer. The phosphor may include, for example, an MGF-based phosphor, a KSF-based phosphor, or a KTF-based phosphor. It may contain at least one.

[0042] When the phosphor is a red phosphor, the red phosphor has a wavelength of 610 nm to 650 nm. The wavelength range may be in the range of 100 nm to 150 nm, and the wavelength may have a width of less than 10 nm. The red phosphor may include a fluoride-based phosphor.

[0043] As shown in FIG. 2, a bracket 100 is disposed under the circuit board 300 . The bracket 100 can support the light emitting module 600. The bracket 100 may include an insertion groove 110 formed by removing a portion of the bracket 100. The light emitting module 600 is disposed under the insertion groove 110 of the bracket 100. The connecting member 200 is inserted to connect the bracket 100 and the light emitting module 600. The bracket 100 may be made of metal, plastic, etc. This is not limited to the above.

[0044] As shown in FIG. 2 and FIG. 3, a coupling member 200 is disposed under the circuit board 300. The coupling member 200 may contact the lower surface of the circuit board 300. For example, the coupling member 200 is coupled to the lower surface of the circuit board 300 by an adhesive. When the coupling member 200 comes into contact with the lower surface of the circuit board 300, The heat dissipation capacity can be improved.

[0045] The lower surface of the circuit board 300 is exposed to a metal plate that is a part of the circuit board 300. In this way, the joining member 200 and the metal plate can be joined by adhesive, For example, the circuit board is bonded to the substrate by a bonding material such as solder paste. The heat dissipation area of ​​the plate 300 is improved.

[0046] The coupling member 200 includes a head portion 210 disposed under the circuit board 300, The support portion 220 is bent from both ends of the head portion 210, and the other end of the support portion 220 is bent outward. The elastic portion 230 is extended and bent. The separation prevention part 240 is extended vertically from the separation prevention part 240 and is inclined. The connecting member 2 may include a leg portion 250 that is bent to have a slope. 00 is inserted into the insertion groove 110 of the bracket 100 to connect the connecting member 200 to the bracket. The racket 100 is fitted and coupled to the bracket 100 and the light emitting module 6 It can improve the bonding strength of 00.

[0047] The thickness of the coupling member 200 may be 0.2 mm±0.05 mm. For example, when the thickness of the connecting member 200 is 0.15 mm or less, the rigidity of the connecting member 200 is As a result, the connecting force between the connecting member 200 and the bracket 100 is weakened. When the thickness of the connecting member 200 is 0.25 mm or more, the volume of the connecting member 200 increases, and the connecting The member 200 and the bracket 100 may not be properly joined together.

[0048] The width a of the coupling member 200 in the first direction may be 8.6 mm±1.0 mm. The width b3, e1 of the connecting member 200 in the second direction is 6 mm±1.0 mm. The length c of the connecting member 200 in the third direction is 6 mm±1.0 mm. can be done.

[0049] As shown in FIGS. 2 to 4, the head unit 210 is disposed under the circuit board 300. The head portion 210 may be in contact with the lower surface of the circuit board 300. The head unit 210 is disposed under the circuit board 300 to support the circuit board 300. The head part 210 extends in a first direction (X direction) and supports the circuit board 210. The head portion 210 may contact the bottom surface of the first side 300. a second side surface opposite to the first side surface, and a third side surface connected to the first side surface and the second side surface; The head portion 210 may include a fourth side surface opposite to the third side surface. The width b1 in the direction may be the same as the width b1 between the first side and the second side. The maximum width b3 in the second direction of 10 is the same as the maximum width b3 between the third side and the fourth side. The width b1 of the head portion 210 in the first direction may be The width b1 of the head portion 210 in the first direction and the maximum width b2 of the head portion 210 in the first direction may be smaller than the maximum width b3 of the head portion 210 in the first direction. The ratio of the maximum width b3 of the head portion 210 in the second direction to the maximum width b2 of the head portion 210 in the second direction may be 2:3. The width b1 in the first direction may be smaller than the minimum width b6 of the head portion 210 in the second direction.

[0050] The width b1 of the head portion 210 in the first direction and the minimum width b6 of the head portion 210 in the second direction The ratio of the width b1 of the head portion 210 in the first direction may be 4 mm±1. The maximum width b3 of the head portion 210 in the second direction may be 6 mm±0.0 mm. The minimum width b6 of the head portion 210 in the second direction may be 4.8 The head portion 210 may have a diameter of 1.0 mm ±1.0 mm. can be done.

[0051] Referring to FIG. 4, the head portion 210 has a pair of ribs extending inward from both sides of the head portion 210. The groove 214 of the head portion 210 may include a recessed groove 214. The groove 214 in the head portion 210 can contact the nozzle 100. The step structure improves the joining strength between the head part 210 and the bracket 100. The width b4 of the groove 214 in the first direction is larger than the width b5 of the groove 214 in the second direction. The ratio of the width b4 of the groove 214 in the first direction to the width b5 of the groove 214 in the second direction may be The ratio of the width b4 of the groove 214 in the first direction may be 2 mm±1.0 mm. The width b5 of the groove 214 in the second direction is 0.6 mm±0.3 mm. It is possible.

[0052] 3 and 4, the head unit 210 includes a first head unit 211 and a second head unit 212. The head portion 211 may include a second head portion 212 extending from one end and the other end of the head portion 211. The first head unit 211 and the second head unit 212 are arranged in a first direction (X direction) and They are formed with different widths in the second direction (Y direction).

[0053] The width b7 of the second head portion 212 in the first direction is The width b7 of the second head portion 212 in the first direction and the width b4 of the first head portion 212 in the first direction may be smaller than the width b4. The ratio of the width b4 of the second head portion 211 in the first direction to the width b4 of the second head portion 212 may be 1:2. The width b3 in the second direction may be greater than the width b6 of the first head portion 211 in the second direction. The width b3 of the second head portion 212 in the second direction and the width b For example, the ratio of the width b 6 of the first head portion 211 in the first direction may be 1:0.8. For example, the first head portion 212 may have a diameter of 2 mm±1.0 mm. The width b7 in the direction can be 1 mm ± 0.5 mm. For example, the first head portion 2 The width b6 of the second direction of the 11 may be 4.8 mm±1.0 mm. The width b3 of the second head portion 212 in the second direction may be 6 mm±0.5 mm.

[0054] As described above, the first head unit 211 and the second head unit 212 are The first head portion 211 is formed with different widths in the first and second directions. The head portion 210 may include a groove 214 formed on the opposite side of the head portion 210. Since the head portion 210 has a stepped structure, the joining strength between the head portion 210 and the bracket 100 is improved. It is possible to do so.

[0055] The first head portion 211 may include an opening 213. The first head portion 211 The opening 213 may have a polygonal shape, but is not limited to such. For example, the opening 213 of the first head portion 211 may have a circular shape. The opening 213 of the head portion 211 is formed so that the head portion 210 is attached to the circuit board 30 by an adhesive. When the adhesive is applied to the bottom surface of the substrate 210, excess adhesive flows into the opening 213 and causes the adhesive to adhere to the bottom surface of the substrate 210. This can prevent the composite member 200 and the circuit board 300 from being misaligned when they are bonded together.

[0056] 2 and 3, the support portion 220 is disposed vertically from the head portion 210. The support portion 220 extends in a third direction (Z direction). The support portion 220 extends in a direction perpendicular to the direction of the head portion 210. The support portion 220 may be disposed so as to extend from the ends of at least two of the side surfaces. , which are extended from the ends of two opposing sides of the head part 210. This may be done.

[0057] The support portion 220 is a first support portion extending vertically from one end of the head portion 210. 221 and a second support portion 222 extending from the other end of the head portion 210. The first support portion 221 and the second support portion 222 may be disposed opposite to each other. The first support portion 221 and the second support portion 222 may be disposed in parallel. The second support portion 221 and the second support portion 222 may be disposed to extend in parallel with each other.

[0058] The support portion 220 includes a first support portion 221 extending from one end of the second head portion 212. and a second support portion 222 extending from the other end of the second head portion 212. Even if the lengths c in the third direction of the first support portion 221 and the second support portion 222 are the same, However, the present invention is not limited to this. The length c of the second insertion groove 110 in the third direction may be greater than the depth of the second insertion groove 110 .

[0059] The length c of the first support portion 221 and the second support portion 222 in the third direction is The first support portion 221 and the second support portion 222 may be longer than the length b1 of the first support portion 210 in the first direction. The ratio of the length c of the head 222 in the third direction to the length b1 of the head 210 in the first direction is 3:2. For example, the length of the first support portion 221 and the second support portion 222 in the third direction may be The thickness may be 6mm±1.0mm.

[0060] The elastic portion 230 is bent and extended from the support portion 220. The elastic portion 230 extends from the support portion 220 and may include an inclined surface. The elastic portion 230 is bent at an acute angle α1 from the support portion 220. The support portion 220 is bent at an angle of 30 degrees ±10 degrees. The angle α1 between the inclined surface of the elastic portion 220 and the support portion 220 may be 30 degrees. The connecting portion between the support 220 and the support 30 is formed as a curved surface, but is not limited thereto. isn't it.

[0061] The elastic portion 230 is a first elastic portion that is extended from the first support portion 221 and bent. 231 and a second elastic portion 232 extending from the second support portion 222 and bent. The first elastic part 231 and the second elastic part 232 can be separated from the support part 220. The first elastic portion 231 and the second elastic portion 232 may be bent in opposite directions to each other and extended. The portion 232 may include inclined surfaces extending in opposite directions. The first elastic part 231 and the second elastic part 232 are elastically inclined toward the outside of the support part 220. The inclined surface is inserted into the insertion groove 110 to fix the circuit board 300 and the coupling member 200. can be done.

[0062] The first elastic portion 231 is bent and extended from the first support portion 221. The first elastic portion 231 is disposed to extend from the first support portion 221 and have an inclined surface. The first elastic portion 231 is bent toward the outside of the first support portion 221. The inclined surface of the first elastic portion 231 is disposed to correspond to the first support portion 221. The angle α1 between the first elastic portion 231 and the first support portion 221 may be an acute angle. For example, The angle α1 between the first elastic portion 231 and the first support portion 221 is 30 degrees±10 degrees. This is also fine.

[0063] The second elastic portion 232 is bent and extended from the second support portion 222. The second elastic portion 232 is disposed to extend from the second support portion 222 and has an inclined surface. The second elastic portion 232 is bent toward the outside of the second support portion 222. The inclined surface of the second elastic portion 232 is disposed to correspond to the second support portion 222. The first elastic part 231 and the second elastic part 232 are bent in opposite directions and extended. The angle α1 between the second elastic portion 232 and the second support portion 222 may be an acute angle. For example, the angle α1 between the second elastic portion 232 and the second support portion 222 is 30 degrees ± It may be 10 degrees.

[0064] The length b2 of the first elastic portion 231 and the second elastic portion 232 in the first direction is 2.3 mm. The first elastic portion 231 and the second elastic portion 232 may have a width of ±1.0 mm. The height d in the third direction may be 3.3 mm±1.0 mm.

[0065] The separation prevention part 240 is bent and extended from the elastic part 230. The spacer 240 may be disposed to extend in a direction parallel to the head 210. The slip-off prevention part 240 is disposed at a predetermined distance from the support part 220. 40 is disposed extending in a direction perpendicular to the extension direction of the support portion 220. The slip-off prevention portion 240 extends from an end of the elastic portion 230 toward the support portion 220. The anti-detachment portion 240 may come into contact with the bracket 100. The upper surface of the anti-detachment portion 24 can be in contact with the lower surface of the bracket 100. The connecting portion between the elastic member 230 and the elastic member 230 is formed as a curved surface, but is not limited thereto. The separation prevention portion 240 is in contact with the lower surface of the circuit board 240 to prevent the insertion groove 110 from being broken. and the connecting member 200 can be connected to each other.

[0066] The separation prevention portion 240 is a first separation portion that is bent and extended from the first elastic portion 231. A second anti-detachment portion 241 and a second anti-detachment portion 242 bent and extended from the second elastic portion 232. The separation prevention part 240 may include the first elastic part 231 and the The first and second support portions 221 and 222 are connected to one end of each of the elastic portions 232. The first and second separation prevention parts 241 and 242 extend toward each other. The first and second separation prevention parts 241 and 242 are disposed on the same plane. The first and second separation prevention parts 241 and 242 may be disposed in the insertion groove. The first separation prevention portion 241 and the second separation prevention portion 242 may contact the stepped structure of the first separation prevention portion 242. The prevention portion 242 is pulled to the step of the step structure of the bracket 100 in which the insertion groove 110 is formed. The circuit board 300 and the bracket 100 are connected to the connecting member 200 by hanging. can be combined.

[0067] The first and second separation prevention parts 241 and 242 are respectively connected to the first elastic part 2 31 and the second elastic portion 232 are bent at an acute angle α2. The stopper portion 241 and the second release prevention portion 242 are connected to the first elastic portion 231 and the second elastic portion 2 It can be bent at an angle α2 of 32 to 60±10 degrees.

[0068] The width e2 of the first and second separation prevention parts 241 and 242 in the first direction is Even if it is smaller than the width e1 of the first separation prevention part 241 and the second separation prevention part 242 in the second direction, The width e2 in the first direction of the first and second separation prevention parts 241 and 242 and the front The ratio of the width e1 in the second direction of the first separation prevention portion 241 and the second separation prevention portion 242 is 1:6. may be also possible.

[0069] The width e2 of the first and second separation prevention parts 241 and 242 in the first direction is 1 mm. The first and second separation prevention portions 241 and 242 may have a width of about ±0.5 mm. The width e1 of the first anti-detachment member 242 in the second direction may be 6 mm±1.0 mm. The shortest distance between the stopper 241 and the first support 221 may be 1 mm. The shortest distance between the second separation prevention part 242 and the second support part 222 may be 1 mm. Cut.

[0070] As shown in FIG. 3 to FIG. 6, the leg portion 250 extends from the separation prevention portion 240. The leg portion 250 is disposed below the circuit board 300 from the end of the separation prevention portion 240. The leg portion 250 is disposed in the insertion groove 110. The first anti-detachment portion 241 extends downward from the first anti-detachment portion 241 to the bottom surface of the circuit board 300. The first leg portion 251 extends from the second release prevention portion 242 toward the bottom surface of the circuit board 300. The leg 250 may include a second leg 252 extending in the direction of the insert. The circuit board 300 and the coupling member 200 are coupled to each other by being inserted into the groove 110. A part of the leg portion 250 is formed in the bracket 10 forming the insertion groove 110. 0 to improve the bonding strength between the bonding member 200 and the circuit board 300. This can be done.

[0071] Referring to FIG. 5a, the first leg portion 251 is perpendicular to the first separation prevention portion 241. The first leg portion 251 extends from the first separation prevention portion 241 in the direction of the The leg portion 251-1 may include a first leg portion 251-1 extending vertically by a predetermined distance. The leg portion 250 includes a first-second leg portion 251-1 extending from the first-first leg portion 251-1. 1-2 is different from the 1-1 leg portion 251-1 and the 1-2 leg portion 251-2. The first elastic piece 251-3 may include a first elastic piece 251-3 extending at an angle and including an inclined surface. The first elastic piece 251-3 is bent at a predetermined angle from the first-first leg portion 251-1. The first elastic piece 251-3 is extended outward from the first-first leg portion 251-1. The tilt direction can be inclined.

[0072] The first-second leg portion 251-2 extends perpendicularly to the first separation prevention portion 241. The first-1 leg portion 251-1 and the first-2 leg portion 251-2 are arranged as follows. , the first support portion 221 and the second support portion 222 are disposed in a direction parallel to each other. The first-1 leg portion 251-1 and the first-2 leg portion 251-2 may be The first support portion 221 is disposed in correspondence with the first leg portion 251-1 and the first support portion 221. The 1-2 leg portion 251-2 is disposed opposite the first support portion 221. 1 leg portion 251-1 and the 1-2 leg portion 251-2 and the 1st elastic piece 251-3 is disposed in the insertion groove 110 of the bracket 100.

[0073] The first elastic piece 251-3 is bent and extended from the first leg portion 251-1. The first elastic piece 251-3 may be elongated and have an inclined surface. At an angle different from that of the first-1 leg portion 251-1, The inclined surface of the first elastic piece 251-3 and the first leg portion 251-1 are arranged in an extended manner. The angle α3 between 251-1 and the first-2 leg portion 251-2 is 15±5 degrees. good.

[0074] The inclined surface of the first elastic piece 251-3 is disposed on the bracket 1 forming the insertion groove 110. The coupling member 200 is inserted into the insertion groove 110 and can contact the inner surface of the coupling member 200. A part of the inclined surface of the first elastic piece 251-3 is inclined toward the insertion groove 110 before the insertion groove 110 is formed. The first elastic piece may be overlapped vertically with the inner surface of the bracket 100. For example, The inclined surface of 251-3 and the inner surface of the insertion groove 110 are in the first direction or the first elastic piece. The inclined surface of 251-3 and the inner surface of the insertion groove 110 overlap by 0.1 mm in the vertical direction. The coupling member 200 may be made of an elastic material. The bracket in which a part of the inclined surface of the first elastic portion 251-3 forms the insertion groove 110 The portion overlapping with the inner surface of 100 is pushed out and placed in the insertion groove 110. As a result, the inner surface of the bracket 100 forming the insertion groove 110 and the first elastic piece 2 51-3, the friction coefficient between the bracket 100 and the connecting member 200 increases. The strength can be improved.

[0075] The length e1 of the first leg portion 251 in the second direction may be 6 mm±1.0 mm. The third leg portion from the first-first leg portion 251-1 to the first-second leg portion 251-2 can be The length f of the first and second legs 25 may be 1.7 mm ± 0.5 mm. The lengths of the first elastic piece 251-2 and the first elastic piece 251-3 in the third direction may be the same, but are not limited thereto. The first-second leg portion 251-2 and the first elastic piece 251-3 are not necessarily fixed. The length in the second direction may be different. For example, the width in the second direction of the first elastic piece 251-3 is , may be larger than the width of the first-second leg portion 251-2 in the second direction, but is not limited thereto. The width of the first elastic piece 251-3 in the second direction is not the same as that of the first-2 leg portion 2 51-2, the first elastic piece 251-3 is inserted into the insertion groove 110. The contact area with the inner surface of the bracket 100 forming the connecting member 200 is increased. The bonding strength of the bracket 100 can be improved.

[0076] Referring to FIG. 5b, the second leg portion 252 is perpendicular to the second separation prevention portion 242. The second leg portion 252 extends from the second separation prevention portion 242 in the The second leg portion 252-1 may include a second leg portion 252-1 extending vertically by a predetermined distance. The leg portion 250 includes a second-2 leg portion 252-1 extending from the second-1 leg portion 252-1. 2-2 is different from the 2-1 leg portion 252-1 and the 2-2 leg portion 252-2. The second elastic piece 252-3 may include a second elastic piece 252-3 extending at an angle and including an inclined surface. The second elastic piece 252-3 is bent at a predetermined angle from the second-1 leg portion 252-1. The second elastic piece 252-3 is extended outward from the second-first leg portion 251-1. The tilt direction can be inclined.

[0077] The second-2 leg portion 252-2 extends perpendicularly to the second separation prevention portion 242. The second-1 leg portion 252-1 and the second-2 leg portion 252-2 are arranged in such a manner that , the first support portion 221 and the second support portion 222 are disposed in a direction parallel to each other. The second-1 leg portion 252-1 and the second-2 leg portion 252-2 may be The second support portion 222 is disposed in correspondence with the second-first leg portion 252-1 and the The 2-2 leg portion 252-2 is disposed opposite the second support portion 222. The first leg portion 252-1 to the second leg portion 252-2 and the second elastic piece 25 2-3 is placed in the insertion groove 110 of the bracket 100.

[0078] The second elastic piece 252-3 is bent and extended from the second-1 leg portion 252-1. The second elastic piece 252-3 may have an inclined surface. At an angle different from that of the 2-1 leg portion 252-1, For example, the inclined surface of the second elastic piece 252-3 and the second elastic piece 252-1 are arranged in an extended manner. The angle α3 between the leg 252-1 and the second leg 252-2 is 15±5 degrees. It's fine.

[0079] The inclined surface of the second elastic piece 252-3 forms the insertion groove 110 of the bracket 100. The connecting member 200 can contact the inner surface of the bracket 100 that constitutes the front end of the connecting member 200. A part of the inclined surface of the second elastic piece 252-3 inserted into the insertion groove 110 is It can vertically overlap the inner surface of the bracket 100 that forms the inlet groove 110 . For example, the inclined surface of the second elastic piece 252-3 and the blade forming the insertion groove 110 The inner surfaces of the socket 100 can overlap by 0.1 mm in the vertical direction. The member 200 may be made of an elastic material, and the second elastic piece leg portion 252- A part of the inclined surface of the bracket 100 overlaps with the inner surface of the bracket 100 that forms the insertion groove 110. The part that has been pushed out is disposed in the insertion groove 110. Friction between the inner surface of the bracket 100 forming 110 and the second elastic piece 252-3 The coefficient is increased, and the connecting strength between the bracket 100 and the connecting member 200 is improved. can.

[0080] a third direction from the second-first leg portion 251-1 to the second-second leg portion 252-2; The length f of the second leg portion 252 may be 1.7 mm±0.5 mm. The length e1 in two directions may be 6.0 mm ± 1.0 mm. The length of the portion 252-2 and the second elastic piece 252-3 in the third direction may be the same. The lengths of the second-2 leg portion 252-2 and the second elastic piece 252-3 in the second direction may be different. For example, the width of the second elastic piece 252-3 in the second direction is preferably The width of the second direction of the second plate may be larger than that of the second plate, but is not limited thereto. The width of the second direction of the second piece 252-3 is greater than the width of the second-2 leg portion 252-2 in the second direction. When the second elastic piece 252-3 is inserted into the bracket 10 forming the insertion groove 110, 0, the contact area between the connecting member 200 and the bracket 100 is increased, and the connecting force between the connecting member 200 and the bracket 100 is increased. can be improved.

[0081] As described above, the lighting device according to the embodiment includes a coupling member disposed under the circuit board 300. 200 is inserted into the insertion groove 110 of the bracket 100, and the connecting member 200 is A head portion 210 is attached to the lower surface of the circuit board 300. A support part 220 that extends, and an elastic part 230 that is bent at a predetermined angle from the support part 220. A separation prevention portion 240 extends from the elastic portion 230 in a direction perpendicular to the support portion 220. The extension is made from the separation prevention portion 240, and a part of the extension is bent at a predetermined angle from the separation prevention portion 240. The connecting member 200 may include a leg portion 250 that is connected to the connecting member 200. 250 contacts the inner surface of the bracket 100 forming the insertion groove 110 to The friction coefficient between the member 200 and the inner surface of the insertion groove 110 is increased, and the bracket 100 Therefore, the coupling strength of the light emitting module 600 can be improved. 0 is attached to the lower surface of the circuit board 300 so that the heat generated by the light emitting device 400 is The heat dissipation capacity of the light emitting module 600 is improved by discharging the heat from the connecting member 200. The reliability can be improved.

[0082] 7a to 7c show that the coupling member 200 arranged in contact with the lower surface of the circuit board 300 is 7a is a view showing a process of coupling the bracket 100 to the insertion groove 110. As shown, the connecting member 302 is attached to the lower surface of the circuit board 300 using an adhesive (not shown). After bonding 200, as shown in FIG. 7b, the bonding member 200 is broken by an external force. The connecting member 200 is inserted into the insertion groove 110 of the bracket 100. 100 are mated together. Then, as shown in FIG. 7c, the inclination of the leg portion 250 is A part of the inclined surface is in contact with the inner surface of the bracket 100 that forms the insertion groove 110. The friction coefficient is increased, and the coupling strength is improved. 100 to prevent the connecting member 200 from tilting from the bracket 100. In addition, the circuit board 300 has a coupling member 200 formed on its lower surface. Therefore, the heat dissipation ability of the circuit board 300 can be improved.

[0083] As described above, in the lighting device according to the embodiment, the coupling element arranged on the lower surface of the circuit board 300 The member 200 and the bracket 100 are coupled to each other, so that the bracket 100 and the light emitting module Therefore, in the lighting device according to the embodiment, The connecting member 200 is inserted into the insertion groove 110 of the bracket 100. Since the light emitting module 600 can be combined with the light emitting module 600 through a simple process, 0 and the bracket 100, and the process cost can be reduced. The leg portion 250 of the connecting member 200 has a portion 251-3 and a portion 252-3 that form the insertion groove 110. The light emitting module 600 is attached to the bracket 100 by contacting the inner surface of the bracket 100. Since the light emitting module 600 can be fixed to the bracket 100, the light emitting module 600 and the bracket It can improve the bonding strength by 100.

[0084] FIG. 8a shows a circuit board 300 on which a light emitting device 400 is disposed. 2 is a diagram showing the heat dissipation capacity of the circuit board 300 when the coupling member 200 is not disposed on the circuit board 300. FIG. 8b shows a circuit board 300 on which a light emitting element 400 is disposed. 1 is a diagram showing the heat dissipation capacity of the circuit board 300 when the coupling member 200 is attached under the 8a and 8b, as shown in FIG. 8a, the circuit board 30 If the coupling member 200 is not disposed under the light emitting element 400, the heat generated from the light emitting element 400 Since only a portion of the light is emitted to the circuit board 300, the temperature of the light emitting device 400 is 49. 4 degrees and as shown in FIG. 8b, the circuit board 300 is attached to the connecting member 200. When the light emitting element 400 is disposed in the circuit board 300, the heat generated from the light emitting element 400 is As the heat is released to the coupling member 200, the temperature of the light emitting device 400 is measured to be 45.7 degrees. Therefore, when the coupling member 200 is disposed under the circuit board 300, the circuit board 300, the heat dissipation capacity is improved, and the reliability of the lighting device can be improved.

[0085] FIG. 9 is a plan view of a vehicle to which a vehicle lamp to which the lighting device according to the embodiment is applied is applied. FIG. 10 is a diagram showing a vehicle lamp having the lighting device disclosed in the embodiment.

[0086] 9 and 10, in a vehicle 900, a tail lamp 800 includes a first lamp unit. 812, a second lamp unit 814, a third lamp unit 816, and a housing 81 0. Here, the first lamp unit 812 serves as a direction indicator. The second lamp unit 814 may be a light source for serving as a side light. The third lamp unit 816 may be a light source for serving as a brake light. The first lamp unit to the third lamp unit may be, but is not limited to, At least one or all of the blocks 812, 814, and 816 may be selected from the group consisting of the reference blocks 812, 814, and 816. The housing 810 includes the first to third lamp units. It can house lamp units 812, 814, and 816 and can be made of a light-transmitting material. At this time, the housing 810 may have a bend depending on the design of the vehicle body. The lamp units 812, 814, and 816 are formed in a housing 810. According to the shape of the vehicle lamp, a surface light source having a curved surface can be realized. When the lamp unit is applied to a tail light, a brake light, or a turn signal lamp of a vehicle, Can be applied to turn signal lamps.

[0087] The features, structures, effects, etc. described in the above embodiments may be incorporated in at least one embodiment of the present invention. The present invention is not limited to any one embodiment. The structure, effect, etc. of the embodiment may be easily understood by a person having ordinary skill in the art to which the embodiment pertains. The present invention can be implemented in various combinations and modifications. should be construed as being within the scope of the present invention.

[0088] In addition, although the above description has been centered on the embodiment, this is merely an example and does not limit the present invention. It is understood that those skilled in the art will understand the essence of the present embodiment. Various modifications and applications not exemplified above are possible within the scope of the intended characteristics. For example, each component specifically presented in the embodiment can be modified and implemented. Such modifications and variations are within the scope of the present invention as defined in the appended claims. should be construed as being within the scope of

Claims

1. a light emitting module including a circuit board, a plurality of light emitting elements disposed on an upper surface of the circuit board, and a resin layer disposed on the circuit board and the plurality of light emitting elements; a coupling member coupled to a lower surface of the circuit board, The coupling member is A head portion disposed on a lower surface of the circuit board; a first support portion extending from one end of the head portion; a second support portion extending from the other end of the head portion; A first elastic portion bent from the first support portion toward an outer side of the first support portion; A second elastic portion bent from the second support portion toward an outer side of the second support portion; a first separation prevention portion bent from an end portion of the first elastic portion toward the first support portion; a second separation prevention portion bent from an end portion of the second elastic portion toward the second support portion; a first leg portion bent from an end of the first separation prevention portion toward a lower surface of the circuit board; a second leg portion bent from an end of the second separation prevention portion toward a lower surface of the circuit board, the first leg portion has a first elastic piece protruding from the first leg portion to an outside of the first leg portion, the second leg portion has a second elastic piece protruding from the second leg portion to an outside of the second leg portion, The upper ends of the first and second leg portions are lower than the upper end of the head portion, A lighting device, wherein upper ends of the first and second elastic pieces are lower than the height of an upper end of the head portion.

2. The lighting device according to claim 1 , wherein the head portion is adhered to a lower surface of the circuit board.

3. the first and second support portions are disposed on both sides of the coupling member in a first direction, The lighting device according to claim 1 , wherein the head portion has a width in a first direction that is smaller than a width in a second direction perpendicular to the first direction.

4. The lighting device according to claim 1 , wherein the first and second separation prevention portions extend in a direction parallel to the head portion.

5. The first leg portion extends in a perpendicular direction from the first separation prevention portion, The lighting device according to claim 1 , wherein the second leg portion extends in a perpendicular direction from the second separation prevention portion.

6. the head portion includes first and second side surfaces to which the first and second support portions are connected, and third and fourth side surfaces disposed between both ends of the first and second side surfaces, The lighting device according to claim 1 , wherein the third side surface and the fourth side surface include an inwardly recessed groove.

7. an angle between a virtual line passing through both ends of the first elastic portion and a virtual line passing through both ends of the first support portion is an acute angle; an angle between a virtual line passing through both ends of the second elastic portion and a virtual line passing through both ends of the second support portion is an acute angle; an angle between a virtual line passing through both ends of the first separation prevention portion and a virtual line passing through both ends of the first elastic portion is an acute angle; The lighting device according to claim 1 , wherein an angle between a virtual line passing through both ends of the second separation prevention portion and a virtual line passing through both ends of the second elastic portion is an acute angle.

8. 8. The lighting device according to claim 1, wherein each of a connecting portion between the first support portion and the first elastic portion, a connecting portion between the second support portion and the second elastic portion, a connecting portion between the first elastic portion and the first separation prevention portion, and a connecting portion between the second elastic portion and the second separation prevention portion is a curved surface.

9. a resin layer disposed on the circuit board; the resin layer seals the light-emitting elements; The lighting device according to claim 1 , wherein the plurality of light-emitting elements include LEDs.

10. The lighting device according to claim 2 , wherein the head portion is adhered to the lower surface of the circuit board with an adhesive.

11. The lighting device according to claim 1 , wherein the head portion includes a first head portion and a second head portion extending from one end and the other end of the first head portion, respectively.

12. The lighting device according to claim 1 , wherein the height of the upper ends of the first and second elastic pieces is lower than the height of the upper ends of the first and second leg portions.

13. The lighting device according to claim 1 , wherein a distance between the lower surface of the circuit board and the first and second leg portions and a distance between the lower surface of the circuit board and the first and second elastic pieces are different from each other.

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