WO2024258215A1 - 조명 장치 및 헤드 램프 - Google Patents
조명 장치 및 헤드 램프 Download PDFInfo
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- WO2024258215A1 WO2024258215A1 PCT/KR2024/008140 KR2024008140W WO2024258215A1 WO 2024258215 A1 WO2024258215 A1 WO 2024258215A1 KR 2024008140 W KR2024008140 W KR 2024008140W WO 2024258215 A1 WO2024258215 A1 WO 2024258215A1
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- sealing portion
- lighting device
- resin composition
- sealing
- height
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/192—Details of lamp holders, terminals or connectors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/29—Attachment thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
- F21S43/195—Details of lamp holders, terminals or connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/50—Waterproofing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
- F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
Definitions
- the invention relates to a lighting device and a headlamp having the same.
- Lighting applications include vehicle lighting, display and signboard backlights.
- Light-emitting diodes have the advantages of low power consumption, semi-permanent life, fast response speed, safety and environmental friendliness compared to light sources such as fluorescent lamps and incandescent lamps.
- the LEDs are applied to various lighting devices such as various display devices, indoor lights or outdoor lights.
- the embodiment provides a lighting device having improved reliability.
- the embodiment provides a headlamp having a lighting device.
- a lighting device comprises: a heat dissipation plate including a recessed portion; a circuit board disposed in the recessed portion and having pads; a light source portion disposed on the heat dissipation plate and including a bonding pad and a light-emitting element; a connecting member connecting the pad of the circuit board and the bonding pad of the light source portion; and a sealing member disposed on the connecting member, wherein the sealing member comprises a first sealing member forming an outer rim; and a second sealing member disposed inside the outer rim, wherein the first sealing member and the second sealing member may include the same resin composition.
- the resin composition includes a base resin and a filler
- the base resin includes an oligomer, a monomer and a photoinitiator
- the oligomer is included in an amount of 45 wt% to 65 wt% based on the total weight of the resin composition
- the monomer is included in an amount of 30 wt% to 50 wt% based on the total weight of the resin composition
- the photoinitiator is included in an amount of 1 wt% to 5 wt% based on the total weight of the resin composition
- the filler can be included in an amount of 2 wt% to 10 wt% based on the total weight of the resin composition.
- the modulus of the resin composition after curing can be in a range of 100 MPa to 8000 MPa.
- the thixotropic properties of the resin composition before curing can be in a range of 2 to 4.
- the particle size of the filler can be in a range of 5 ⁇ m to 30 ⁇ m.
- the connecting member includes one end connected to the bonding pad of the light source portion; the other end connected to the pad of the circuit board; and a center portion extending from the one end toward the other end, and the first sealing portion includes a 1-1 sealing portion arranged close to the one end, a 1-2 sealing portion arranged close to the other end, and a 1-3 sealing portion connecting the 1-1 sealing portion and the 1-2 sealing portion, and the 1-1 sealing portion, the 1-2 sealing portion, and the 1-3 sealing portion can be formed integrally.
- the maximum height of the second sealing portion may be in a range of 1 to 5 times the maximum height of the first sealing portion.
- the maximum height of the first-second sealing portion may be greater than or equal to the maximum height of the first-first sealing portion.
- the maximum height of the first-second sealing portion may be in a range of 1 to 2.5 times the maximum height of the first-first sealing portion.
- the second sealing portion and the connecting member are spaced apart by a first interval, the first interval being defined as a interval between a maximum height of the connecting member and the second sealing portion, and the first interval may be in a range of 100 ⁇ m to 200 ⁇ m.
- the first-first sealing portion and the light-emitting element are spaced apart by a second interval, and the second interval may be in a range of 0.8 mm to 1 mm.
- light emitted from the light-emitting element and the first sealing portion form a first angle
- light emitted from the light-emitting element and the second sealing portion form a second angle
- at least one of the first angle and the second angle may be 30° or less.
- the connecting member comprises: one end connected to a bonding pad of the light source portion; the other end connected to a pad of the circuit board; And a center portion extending from the one end toward the other end, wherein the first sealing portion includes a 1-1 sealing portion arranged close to the one end, a 1-2 sealing portion arranged close to the other end, and a 1-3 sealing portion connecting the 1-1 sealing portion and the 1-2 sealing portion, wherein the 1-1 sealing portion includes a 1-1a sealing portion and a 1-1b sealing portion, wherein the 1-1a sealing portion is arranged closer to the one end than the 1-1b sealing portion, the 1-2 sealing portion includes a 1-2a sealing portion and a 1-2b sealing portion, wherein the 1-2a sealing portion is arranged closer to the other end than the 1-2b sealing portion, and the 1-1 sealing portion may include a 1-3a sealing portion and a 1-3b sealing portion.
- the 1-1a sealing portion, the 1-2a sealing portion, and the 1-3a sealing portion form a first outer edge portion
- the 1-1b sealing portion, the 1-2b sealing portion, and the 1-3b sealing portion form a second outer edge portion
- the first outer edge and the second outer edge can be spaced apart from each other.
- the second sealing portion may be arranged inside the first outer rim.
- the height of the first outer rim may be greater than the height of the second outer rim.
- a headlamp according to an embodiment of the invention comprises a housing; and a light source module disposed inside the housing, wherein the light source module may include the lighting device disclosed above.
- a lighting device includes a sealing portion.
- the sealing portion can protect a connecting member connected to a light source portion and prevent the connecting member from being damaged by external impact. As a result, the reliability of the lighting device is improved.
- the sealing portion includes a first sealing portion and a second sealing portion.
- the first sealing portion forms an outer edge of the sealing portion.
- the second sealing portion is disposed inside the outer edge.
- the first sealing portion and the second sealing portion are formed by a resin composition.
- the resin composition includes an oligomer, a monomer, a photoinitiator, and a filler.
- the oligomer, the monomer, the photoinitiator, and the filler are included in a set weight %. Accordingly, thixotropy and elasticity of the resin composition can be controlled.
- the resin composition can satisfy the thixotropy required by the first sealing portion.
- the resin composition can satisfy the elasticity required by the second sealing portion. Therefore, the first sealing portion and the second sealing portion can be formed by the same resin composition.
- the first sealing portion and the second sealing portion can be formed by the same process. Accordingly, the process efficiency of forming the sealing portion is improved.
- the height of the first sealing portion and the height of the second sealing portion have set heights, and the first sealing portion can protect the surface of the light-emitting element and suppress light interference.
- the second sealing portion can cover the surface of the connecting member and protect the connecting member. Accordingly, the reliability of the lighting device can be improved and its size can be reduced.
- FIG. 1 is a perspective view showing a connection member arranged between a light source and a circuit board in a lighting device according to an embodiment.
- FIG. 2 is a side cross-sectional view of a lighting device having a sealing portion in FIG. 1.
- Figure 3 is a partially enlarged view showing the light source unit, circuit board, and connecting members of the lighting device of Figure 1.
- Fig. 4 is a plan view of a lighting device having a sealing portion in Fig. 3.
- Fig. 5 is a plan view of a lighting device having a plurality of sealing portions in Fig. 3.
- Fig. 6 is a cross-sectional side view for explaining the connection of the light source unit, connecting member, and heat dissipation plate of the lighting device of Fig. 5.
- Figure 7 is an enlarged view of area A of Figure 6.
- Fig. 8 is a photograph showing a light source unit, a connecting member, and a heat dissipation plate connected to a lighting device according to an embodiment.
- Figure 9 is a drawing for explaining the thickness ratio of the sealing portion in the A-A' area of Figure 9.
- Fig. 10 is another plan view of the lighting device of Fig. 3.
- Fig. 11 is a cross-sectional side view for explaining the connection of the light source unit, connecting member, and heat dissipation plate of the lighting device of Fig. 10.
- Figure 12 is an enlarged view of area B of Figure 11.
- Fig. 13 is a perspective view of a headlamp to which a lighting device according to an embodiment is applied.
- a component when a component is described as being 'connected', 'coupled' or 'connected' to another component, it may include not only cases where the component is directly connected, coupled or connected to the other component, but also cases where the component is 'connected', 'coupled' or 'connected' by another component between the component and the other component.
- each component when it is described as being formed or arranged "above or below" each component, above or below includes not only the cases where the two components are in direct contact with each other, but also the cases where one or more other components are formed or arranged between the two components. Also, when it is expressed as “above or below,” it can include the meaning of the downward direction as well as the upward direction based on one component.
- a lighting device may include a heat dissipation plate (101), a circuit board (110) disposed on the heat dissipation plate (101), a light source unit (130) disposed on the heat dissipation plate (101) and including a light emitting element (131), a connecting member (141, 142) connecting the light source unit (130) and the circuit board (110), and a sealing member (200) sealing the connecting member (141, 142).
- the above lighting device is applied to various lamp devices requiring lighting.
- the lighting device can be applied to vehicle lamps, household lighting devices, and industrial lighting devices.
- the lighting device can be applied to the vehicle lamp.
- the lighting device can be applied to head lamps, side mirror lights, side maker lights, fog lights, tail lamps, brake lights, daytime running lights, vehicle interior lights, door scars, rear combination lamps, and backup lamps.
- the lighting device can also be applied to indoor or outdoor advertising devices, display devices, and electric vehicle fields.
- the heat dissipation plate (101) supports the circuit board (110). Heat generated in the circuit board (110) can be transferred by the heat dissipation plate (101).
- the heat dissipation plate (101) includes metal.
- the heat dissipation plate (101) can be formed by a laminated structure of a plurality of metal layers.
- the heat dissipation plate (101) can be formed as a single layer or multiple layers.
- the heat dissipation plate (101) can include a ceramic material, AlN, or an aluminum material having an anodized surface layer.
- the metal layer can include at least one of Al, Ni, Mo, Cu, Cu-alloy, Cu-W, Ag, or Au.
- the heat dissipation plate (101) includes a heat dissipation portion (102) and a side portion (103).
- the heat dissipation portion (102) includes a recess portion (108).
- the circuit board (110) is arranged in the recessed portion (108).
- the area of the heat dissipation portion (102) may be larger than the area of the circuit board (110).
- the side portion (103) is bent backward from the edge of the heat dissipation portion (102).
- the side portions (103) may be arranged one or more along the outer side of the heat dissipation portion (102).
- An empty space (109) may be provided on the inner side of the side portion (103) and the lower side of the heat dissipation portion (102), or another structure may be combined.
- the heat dissipation plate (101) may be a support plate.
- the recessed portion (108) is formed at a predetermined depth on the upper surface of the heat dissipation portion (102) of the heat dissipation plate (101).
- the depth of the recessed portion (108) may be the same as or different from the thickness of the circuit board (110).
- the depth of the recessed portion (108) may be smaller than the thickness of the circuit board (110).
- the top view shape of the recessed portion (108) may be the same as the top view shape of the circuit board (110).
- the top view shape of the recessed portion (108) may include a polygonal shape.
- the circuit board (110) is inserted into the recessed portion (108).
- the circuit board (110) and the bottom surface of the recessed portion (108) can be bonded by an adhesive member (155).
- the adhesive member (155) can include a thermally conductive adhesive.
- the upper surface of the circuit board (110) can be arranged on the same plane as the upper surface of the heat dissipation plate (101).
- the upper surface of the circuit board (110) can be arranged higher than the upper surface of the heat dissipation plate (101).
- the adhesive member (155) is arranged on the outer periphery of the recessed portion (108). Accordingly, the surface of the heat dissipation portion (102) can be bonded to the circuit board (110).
- the circuit board (110) may include a resin material or a metal material.
- the circuit board (110) may include one of a ceramic-based PCB, an MCPCB (Metal Core PCB), a flexible PCB (FPCB, Flexible PCB), and a resin-based PCB.
- the circuit board (110) may include a metal layer at the bottom, a circuit layer having a pad at the top, a protective layer of an insulating material for protecting the circuit layer at the top, and an insulating layer between the metal layer and the circuit layer.
- the circuit board (110) may be provided as an MCPCB having a metal layer at the bottom.
- the circuit board (110) may transfer heat to the heat dissipation plate (101).
- the circuit board (110) can be fastened to the heat dissipation unit (102) by a fastening means (119).
- the fastening means (119) can include one or more screws.
- the circuit board (110) and the heat dissipation unit (102) can be fastened and tightly joined by the screws.
- the adhesive member (155) can be removed. Accordingly, the circuit board (110) can be easily separated.
- the circuit board (110) may include a plurality of pads.
- the pads (111, 112) may include a first pad (111) and a second pad (112) that are spaced apart from each other.
- the first pad (111) and the second pad (112) may be connected to a connector (115) disposed on an upper portion of the circuit board (110) by a circuit layer of the circuit board (110).
- the connector (115) may receive a driving signal and power from the outside.
- the pads (111, 112) and the connector (115) may be disposed on both edges of the circuit board (110).
- the fastening means (119) may be disposed in an area between the pads (111, 112) and the connector (115).
- the first pad (111) and the second pad (112) are disposed adjacent to one side of the circuit board (110).
- the above pads (111, 112) can be selected from Ti, Ru, Rh, Ir, Mg, Zn, Al, In, Ta, Pd, Co, Ni, Si, Ge, Ag, and Au and optional alloys thereof.
- the light source unit (130) may be placed on the heat dissipation unit (102).
- the light source unit (130) may be adjacent to the recessed unit (108).
- the light source unit (130) may be adjacent to one side of the circuit board (110).
- One side of the circuit board (110) may be placed between the pads (111, 112) and the light source unit (130).
- the light source unit (130) may include a support member (133) and at least one light-emitting element (131) placed on the support member (133).
- the plurality of light-emitting elements (131) may be sealed by a resin member (132).
- the support member (133) may include a ceramic substrate or a semiconductor substrate.
- the support member (133) may support the plurality of light-emitting elements (131).
- the support member (133) may include a conductive pattern.
- the plurality of light-emitting elements (131) may be electrically connected by the conductive pattern.
- the support member (133) may electrically connect each of the plurality of light-emitting elements (131) to a bonding pad (134, 135).
- the anode terminal and the cathode terminal of each of the plurality of light-emitting elements (131) may be electrically connected to the first and second bonding pads (134, 135).
- a protection element (not shown) for protecting the light-emitting elements (131) may be arranged on the support member (133).
- the protection element may be implemented with a thyristor, a zener diode, or a TVS (transient voltage suppression). Accordingly, the light-emitting elements (131) may be protected from ESD (electro static discharge).
- the support member (133) may be formed of a ceramic material or an MCPCB material.
- the light source unit (130) may transfer heat generated from the light-emitting elements (131) to the heat dissipation plate (101) by the support member (133).
- the support member (133) and the heat dissipation plate (101) may be bonded by an adhesive.
- the adhesive (138) may include a thermally conductive adhesive having metal powder or inorganic powder in a resin material.
- the adhesive (138) may include a TIM (thermal interface material).
- the adhesive (138) may be placed along the lower surface and the lower side surface of the support member (133).
- the adhesive (138) may be placed on the outer side surface of the support member (133) and may come into contact with each side surface of the support member (133).
- the light emitting elements (131) are arranged in a plurality in one direction or in at least one column.
- the plurality of light emitting elements (131) may be connected to each other in series.
- the plurality of light emitting elements (131) may include at least one of blue, green, or red LED chips.
- the plurality of light emitting elements (131) may be flip-chip or wire bonded.
- the light emitting element (131) may include a plurality of semiconductor layers made of a compound semiconductor of group II and group VI elements or/and a compound semiconductor of group III and group V elements.
- At least one or all of the plurality of semiconductor layers may include a compound semiconductor of a series such as AlInGaN, InGaN, AlGaN, GaN, GaAs, InGaP, AllnGaP, InP, InGaAs.
- the resin member (132) may include silicone or epoxy.
- the resin member (132) may include a transparent layer and/or a phosphor layer (not shown) on the light-emitting element (131).
- a reflective wall (not shown) may be included around the transparent layer and/or the phosphor layer.
- the resin member (132) may further include a convex lens (not shown).
- the phosphor layer may include at least one or two or more of a yellow phosphor, a green phosphor, a blue phosphor, and a red phosphor. When the phosphor layer is arranged on the light-emitting element (131), the phosphor layer may be exposed to the upper surface of the light source unit (130).
- the light source unit (130) may emit white light.
- the light-emitting element (131) is arranged on an upper portion of one side of the support member (133).
- a bonding pad (134, 135) is exposed on an upper portion of the other side of the support member (133).
- the bonding pads (134, 135) may include a first bonding pad (134) connected to the cathodes of the plurality of light-emitting elements (131) and a second bonding pad (135) connected to the anodes of the plurality of light-emitting elements (131).
- the first bonding pad (134) may have a color-coded mark and function as a cathode terminal, and the second bonding pad (135) may function as an anode terminal.
- the first bonding pad (134) and the second bonding pad (135) can be selected from Ti, Ru, Rh, Ir, Mg, Zn, Al, In, Ta, Pd, Co, Ni, Si, Ge, Ag, Au, and optional alloys thereof.
- the first bonding pad (134) and the first pad (111) are connected by a first connecting member (141), and the second bonding pad (135) and the second pad (112) are connected by a second connecting member (142).
- the first connecting member (141) and the second connecting member (142) may be formed of a wire.
- the first connecting member (141) and the second connecting member (142) may include at least one of Au, Al, Ag, and Ni.
- the first connecting member (141) and the second connecting member (142) have one end (41) bonded to the first bonding pad (134) and the second bonding pad (135), respectively, and the other end (43) bonded to the first pad (111) and the second pad (112), respectively.
- the first connecting member (141) and the second connecting member (142) include a center portion (42) extending from one end (41) to the other end (43).
- the center portion (42) may extend from the other side of the light source portion (130) to one side of the circuit board (110).
- the center portion (42) may extend onto a recessed portion (108) between the circuit board (110) and the heat dissipation portion (102).
- the height of the one end (41) may be arranged higher than the height of the other end (43).
- the height of the center portion (42) may be arranged higher than the one end (41).
- the light source unit (310) and the circuit board (110) are electrically connected by the first connecting member (141) and the second connecting member (142).
- the connecting members (141, 142) include wires having a width greater than a thickness, i.e., a ribbon shape. Accordingly, the connecting members (141, 142) may be damaged by external impact. In addition, when the connecting members (141, 142) are exposed to the outside, they may react with substances in the air and be corroded. Accordingly, the electrical connection characteristics of the light source unit (310) and the circuit board (110) may be reduced.
- the lighting device according to the embodiment includes a sealing member.
- a lighting device includes the sealing member (200).
- the sealing member (200) is disposed on the connecting member (141, 142).
- the sealing member (200) surrounds the connecting member (141, 142).
- the sealing member (200) includes a resin composition.
- the sealing member (200) includes a base resin and a plurality of fillers disposed inside the base resin.
- the base resin may include an acrylic resin.
- the base resin may include a photocurable resin.
- the base resin may include an oligomer, a monomer, and a photoinitiator.
- the resin composition may be cured by a reaction of the oligomer, the monomer, and the photoinitiator.
- the oligomer may include urethane acrylate, and the additive monomer may include acrylate.
- the photoinitiator may include a known photoinitiator for UV curing.
- the filler is disposed inside the base resin.
- the filler is dispersed inside the base resin.
- the filler may include particles having a spherical or (nano)wire shape.
- the particle diameter of the filler may be 5 ⁇ m or more. In detail, the particle diameter of the filler may be 5 ⁇ m to 30 ⁇ m.
- the filler may include a metal or a non-metal.
- the filler may include aluminum (Al) or silica (Si).
- the oligomer, the monomer, and the filler may be included in a set weight % with respect to the total weight % of the resin composition.
- the weight of the oligomer, the monomer, and the filler is related to the thixotropic property (TI), elasticity, viscosity, and adhesiveness of the resin composition.
- TI thixotropic property
- the thixotropic property of the resin composition before curing and the elasticity and viscosity of the resin composition after curing can be changed by the weight range of the oligomer, the monomer, and the filler.
- the oligomer may be included in an amount of 40 wt% or more with respect to the total weight of the resin composition (100 wt%).
- the oligomer may be included in an amount of 45 wt% to 65 wt% with respect to the total weight% of the resin composition.
- the monomer may be included in an amount of 30 wt% or more with respect to the total weight% of the resin composition. In detail, the monomer may be included in an amount of 30 wt% to 50 wt% with respect to the total weight% of the resin composition. Since the monomer is included in the above weight% range, the viscosity of the resin composition after curing is reduced. In addition, the adhesive strength between the sealing portion and the heat dissipation plate (101) and the circuit board (110) is increased.
- the filler may be included in an amount of 1 wt% or more based on the total weight% of the resin composition. Specifically, the filler may be included in an amount of 2 wt% to 10 wt% based on the total weight% of the resin composition. Since the filler is included in the above weight% range, the thixotropic nature of the resin composition before curing increases. Thereby, the manufacturing process of the sealing portion becomes easy. In addition, the viscosity of the resin composition after curing decreases.
- the photoinitiator may be included in an amount of 1 wt% or more based on the total weight of the resin composition. Specifically, the photoinitiator may be included in an amount of 1 wt% to 5 wt% based on the total weight of the resin composition.
- the properties of the resin composition are controlled by the weight ratio of the oligomer, the monomer, the filler, and the photoinitiator.
- the thixotropy of the resin composition before curing is controlled.
- the thixotropy of the resin composition before curing may be 2 to 4. Since the thixotropy satisfies the above range, the sealing portion can be easily formed. This will be described in detail below.
- the elasticity of the resin composition after curing is controlled.
- the modulus of the resin composition after curing may be 100 MPa or more. More specifically, the modulus of the resin composition after curing may be 100 MPa to 8000 MPa. Thereby, the sealing portion can be prevented from being damaged by external impact.
- the sealing portion (200) includes a first sealing portion (210) and a second sealing portion (220).
- the first sealing portion (210) is arranged at an edge of the sealing portion (200).
- the first sealing portion (210) can form an outer edge of the sealing portion (200).
- the sealing portion (200) can form an inner region in which the second sealing portion (220) is arranged by the first sealing portion (210).
- the first sealing portion (210) is divided into a first-first sealing portion (211), a first-second sealing portion (212), and a first-third sealing portion (213) depending on the location.
- the first-first sealing portion (211) is positioned close to the light source portion (130).
- the first-first sealing portion (211) is positioned close to the first end (41).
- the first-second sealing portion (212) is positioned close to the circuit board (110).
- the first-second sealing portion (213) is positioned close to the other end (43).
- the first-third sealing portion (213) connects the first-first sealing portion (211) and the first-second sealing portion (212).
- the first-first sealing portion (211), the first-second sealing portion (212), and the first-third sealing portion (213) are distinguished by position and formed integrally.
- the above first-first sealing portion (211), the first-second sealing portion (212), and the first-third sealing portion (213) form an outer edge of the sealing portion (200). Accordingly, the first sealing portion (210) can function as a dam of the sealing portion (200).
- the first sealing portion (210) includes the resin composition.
- the first sealing portion (210) is formed by curing the resin composition.
- the resin composition has the physical properties described above.
- the resin composition has a thixotropic property within a set range. Accordingly, the flowability of the first sealing portion (210) can be controlled before curing the first sealing portion (210). Therefore, after the second sealing portion (220) is arranged on the inside of the first sealing portion (210), the first sealing portion (210) and the second sealing portion (220) can be cured simultaneously.
- the material of the first sealing portion (210) and the material of the second sealing portion (220) can be used as the same material. Therefore, the process efficiency of forming the sealing portion (200) can be improved.
- the first sealing portion (210) When the thixotropy of the resin composition is 2 or less, when the second sealing portion (220) is arranged on the inside of the first sealing portion (210), the first sealing portion (210) may be pushed outward. Accordingly, it becomes difficult for the first sealing portion (210) to function as a dam. Accordingly, a process of separately curing the first sealing portion (210) is required. Alternatively, a process of increasing the height of the first sealing portion (210) is required. Accordingly, the process efficiency of forming the sealing portion (200) may be reduced. In addition, when the thixotropy of the resin composition exceeds 4, the viscosity and modulus of the cured resin composition may change. Accordingly, the sealing portion (200) may be damaged by an external impact.
- the second sealing portion (220) is arranged in the inner region of the sealing portion (200).
- the second sealing portion (220) is arranged in the inner region of the first sealing portion (210).
- the first sealing portion (210) forms an outer edge of the sealing portion (200).
- the second sealing portion (220) is arranged inside the outer edge.
- the second sealing portion (220) may be a protective layer that protects the connecting member (141, 142).
- the second sealing portion (220) is arranged while surrounding the connecting member (141, 142). As a result, the connecting member (141, 142) can be prevented from being damaged by an external impact.
- the second sealing portion (220) includes the resin composition.
- the second sealing portion (220) is formed by curing the resin composition.
- the resin composition forming the second sealing portion (220) is the same as the resin composition forming the first sealing portion (210).
- the above resin composition has the physical properties described above.
- the resin composition has a viscosity and a modulus within a set range.
- the modulus of the second sealing portion (220) formed by curing the resin composition may be 100 MPa to 8000 MPa. Accordingly, the elasticity of the second sealing portion may be controlled. Accordingly, the connecting members (141, 142) may be protected by the sealing portion (200). That is, since the sealing portion (200) is protected by an external impact, the connecting members (141, 142) may be easily protected by the sealing portion (200).
- the first sealing portion (210) and the second sealing portion (220) are formed of the same resin composition.
- the resin composition has thixotropic properties, viscosity, and modulus within a set range.
- the resin composition can satisfy both the physical properties required by the first sealing portion (210) and the physical properties required by the second sealing portion (220).
- the resin composition satisfies the thixotropic properties required by the first sealing portion (210).
- the resin composition satisfies the modulus required by the second sealing portion (220).
- the first sealing portion (210) and the second sealing portion (220) can be formed in the same process using the same resin composition.
- the first sealing portion (210) is applied to form the outer edge of the sealing portion (200).
- the second sealing portion (220) is applied to the inside of the outer edge.
- the first sealing portion (210) and the second sealing portion (220) can be cured simultaneously. Therefore, the process time for forming the sealing portion (200) is shortened. Therefore, the process efficiency is improved.
- the first sealing portion (210) and the second sealing portion (220) may have set heights based on the upper surface of the circuit board (110) or the upper surface of the heat dissipation plate (101).
- the height of the first sealing portion (210) may be defined by the thickness of the first sealing portion (210).
- the height of the second sealing portion (220) may be defined by the thickness of the second sealing portion (220).
- the height (H2) of the first sealing portion (210) and the height (H2) of the second sealing portion (220) may be different.
- the height (H2) of the second sealing portion (220) is greater than the height of the first sealing portion (210) based on the upper surface of the circuit board (110) or the upper surface of the heat dissipation plate (101).
- the maximum height of the second sealing portion (220) is greater than the maximum height of the first sealing portion (210).
- the height (H2) of the second sealing portion may be 2, 3, or 4 times or more the height of the first sealing portion (210).
- the height (H2) of the second sealing portion (220) may be 1 to 5 times more than the height of the first sealing portion (210).
- the second sealing portion (220) may not completely surround the connecting member (141, 142). As a result, the connecting member (141, 142) may expose the sealing portion (200) to the outside. Alternatively, if the height (H2) of the second sealing portion (220) is less than or equal to one time the height of the first sealing portion (210), the distance between the connecting member (141, 142) and the second sealing portion (220) may become smaller. As a result, an external impact may be transmitted to the connecting member (141, 142). As a result, the connecting member (141, 142) may be damaged by the external impact.
- the height (H1-1) of the first-first sealing portion and the height (H1-2) of the first-second sealing portion may be the same or different.
- the height (H1-2) of the first-second sealing portion may be greater than or equal to the height (H1-1) of the first-first sealing portion. That is, the height (H1-2) of the first-second sealing portion may be the same as or greater than the height (H1-1) of the first-first sealing portion.
- the height (H1-2) of the first-second sealing portion may be 1 to 1.5 times, 1 to 2 times, or 1 to 2.5 times the height (H1-1) of the first-first sealing portion.
- the process of forming the first sealing portion (210) can be facilitated. If the height (H1-2) of the above-mentioned 1-2 sealing portion is made greater than the height (H1-1) of the above-mentioned 1-1 sealing portion, the height deviation of the above-mentioned 2 sealing portion is reduced.
- the above-mentioned 1-1 sealing portion (211) is arranged at a higher position than the above-mentioned 1-2 sealing portion (212). Accordingly, the above-mentioned 2 sealing portion (220) can have a step formed in the outer region.
- the height (H1-2) of the above-mentioned 1-2 sealing portion is arranged to be greater than the height (H1-1) of the above-mentioned 1-1 sealing portion, the height difference of the above-mentioned 2 sealing portion (220) can be reduced.
- the second sealing portion (220) and the connecting member (141, 142) may be spaced apart from each other.
- the distance between the second sealing portion (220) and the connecting member (141, 142) may be defined as a first gap (G1).
- the first gap (G1) is defined as a gap in the height direction of the second sealing portion (220).
- the first gap (G1) may be defined as a gap between a high point of the connecting member (141, 142) and a high point of the second sealing portion (220).
- the first gap (G1) may be 100 ⁇ m or more. In detail, the first gap (G1) may be 100 ⁇ m to 200 ⁇ m, 120 ⁇ m to 180 ⁇ m, or 140 ⁇ m to 160 ⁇ m.
- the first gap (G1) is less than 100 ⁇ m, the amount of sealing portion arranged between the second sealing portion (220) and the connecting member (141, 142) becomes small. Accordingly, an external impact may pass through the second sealing portion (220) and be transmitted to the connecting member (141, 142). Accordingly, the reliability of the lighting device may be reduced. If the first gap (G1) exceeds 200 ⁇ m, the height of the second sealing portion (220) increases. Accordingly, the thickness of the illuminating device may be thickened by the second sealing portion (220).
- the above 1-1 sealing portion (211) and the light emitting element (131) can be spaced apart from each other.
- the distance between the 1-1 sealing portion (211) and the light emitting element (131) can be defined as a second gap (G2). It is defined as a gap in the longitudinal direction of the connecting members (141, 142).
- the second gap (G2) can be 0.8 mm or more. In detail, the second gap (G2) can be 0.8 mm to 1 mm.
- the 1-1 sealing portion (211) can also be placed in an area where the light emitting element (131) is placed during a process of forming the sealing portion.
- the gap between the light emitting element (131) and the bonding pads (134, 135) can increase.
- the size of the light source unit (130) can be increased.
- the size of the lighting device can be increased.
- the height of the first sealing portion (210) and the height (H2) of the second sealing portion (220) are limited by the beam angle of the light-emitting element (131).
- the beam angle of the light-emitting element (131) may be 120° or more.
- the first angle ( ⁇ 1) formed between the light emitted from the light-emitting element (131) and the first sealing portion (210) may be 30° or less.
- the second angle ( ⁇ 2) formed between the light emitted from the light-emitting element (131) and the second sealing portion (220) may be 30° or less. Accordingly, the Lambertian emission of the light-emitting element (131) is not interfered with by the sealing portion (200). Accordingly, the brightness and light efficiency of the lighting device may be improved.
- FIGS. 8 and 9 are drawings for explaining a sealing portion of a lighting device according to an embodiment and a thickness profile of the sealing portion.
- the sealing portion (200) includes a first sealing portion (210) and a second sealing portion (220).
- the first sealing portion (210) and the second sealing portion (220) are formed of the same resin composition.
- the first sealing portion (210) and the second sealing portion (220) have different application orders.
- the first sealing portion (210) and the second sealing portion (220) are arranged at different heights. Therefore, they are distinguished by the boundary between the first sealing portion (210) and the second sealing portion (220).
- the maximum height (H2) of the second sealing portion (220) is greater than the heights (H1-1, H1-2) of the first sealing portion (210).
- the height of the second sealing portion (220) in contact with the first sealing portion (210) is smaller than the height of the first sealing portion (210).
- the height of the second sealing portion (220) gradually increases and becomes larger than the height of the first sealing portion (210).
- the second sealing portion (220) is arranged in a shape that gradually increases and then decreases.
- the first sealing portion (210) is formed by the resin composition. Accordingly, the first sealing portion has a thixotropic property within a set range before curing. Accordingly, when the second sealing portion is filled, the first sealing portion does not collapse. Accordingly, the second sealing portion does not overflow outside the first sealing portion. Accordingly, the second sealing portion is not arranged on the outside of the first sealing portion.
- the lighting device according to the embodiment includes a sealing portion (200).
- the sealing portion (200) protects the connecting member (141, 142). Accordingly, the connecting member (141, 142) can be prevented from being damaged by external impact. Accordingly, the reliability of the lighting device is improved.
- the sealing portion (200) includes a first sealing portion (210) and a second sealing portion (220).
- the first sealing portion (210) forms an outer edge of the sealing portion (200).
- the second sealing portion (220) is arranged inside the outer edge.
- the first sealing portion (210) and the second sealing portion (220) are formed by a resin composition.
- the resin composition includes an oligomer, a monomer, a photoinitiator, and a filler.
- the oligomer, the monomer, the photoinitiator, and the filler are included in a set weight %. Accordingly, the thixotropy and elasticity of the resin composition can be controlled.
- the resin composition can satisfy the thixotropy required by the first sealing portion (210).
- the resin composition can satisfy the elasticity required by the second sealing portion (220). Therefore, the first sealing portion (210) and the second sealing portion (220) can be formed by the same resin composition.
- the first sealing portion (210) and the second sealing portion (220) can be formed by the same process. Accordingly, the process efficiency of forming the sealing portion (200) is improved.
- the height of the first sealing portion (320) and the height of the second sealing portion (220) have sizes set based on the upper surface of the circuit board (110) or the upper surface of the heat dissipation plate (101).
- the first sealing portion (210) and the light-emitting element (131) are spaced apart by a set interval, and the second sealing portion (220) may have an interval for protecting the surface of the connecting member (141, 142). Accordingly, the reliability of the lighting device may be improved and its size may be reduced.
- the lighting device includes the sealing portion (200).
- the sealing portion (200) includes a first sealing portion (210) and a second sealing portion (220).
- the first sealing portion (210) is divided into a first-first sealing portion (211), a first-second sealing portion (212), and a first-third sealing portion (213) according to location.
- the first-first sealing portion (211) is arranged close to the light source portion (130).
- the first-first sealing portion (211) is arranged close to the first end (41).
- the first-second sealing portion (212) is arranged close to the circuit board (110).
- the first-second sealing portion (213) is arranged close to the other end (43).
- the above 1-3 sealing portion (213) connects the 1-1 sealing portion (211) and the 1-2 sealing portion (212).
- the 1-1 sealing portion (211), the 1-2 sealing portion (212), and the 1-3 sealing portion (213) are distinguished by their positions and are formed integrally.
- the 1-1 sealing portion (211), the 1-2 sealing portion (212), and the 1-3 sealing portion (213) form an outer edge of the sealing portion (200). Accordingly, the 1-1 sealing portion (210) can function as a dam of the sealing portion (200).
- the above-mentioned 1-1 sealing portion (211), the above-mentioned 1-2 sealing portion (212), and the above-mentioned 1-3 sealing portion (213) may each include two sealing portions.
- the above-mentioned 1-1 sealing portion (211) may include the above-mentioned 1-1a sealing portion (211a) and the above-mentioned 1-1b sealing portion (211b).
- the above-mentioned 1-1a sealing portion (211a) is arranged inside the above-mentioned 1-1b sealing portion (211b).
- the above-mentioned 1-1a sealing portion (211a) is arranged closer to the end (41) than the above-mentioned 1-1b sealing portion (211b).
- the above-mentioned 1-1b sealing portion (211b) is arranged closer to the light source portion (130) than the above-mentioned 1-1a sealing portion (211a).
- the above-mentioned first-second sealing portion (212) may include the first-2a sealing portion (212a) and the first-2b sealing portion (221b).
- the first-2a sealing portion (212a) is positioned closer to the other end (43) than the first-2b sealing portion (212b).
- the above 1-3 sealing portion (213) may include the 1-3a sealing portion and the 1-3b sealing portion.
- the 1-3a sealing portion (213a) is positioned inside the 1-3b sealing portion (213b).
- the above-mentioned 1-1a sealing portion (211a), the above-mentioned 1-2a sealing portion (212a), and the above-mentioned 1-3a sealing portion are connected.
- the above-mentioned 1-1a sealing portion (211a), the above-mentioned 1-2a sealing portion (212a), and the above-mentioned 1-3a sealing portion (213a) are formed integrally.
- the above-mentioned first sealing portion (210) forms a first outer edge by the above-mentioned 1-1a sealing portion (211a), the above-mentioned 1-2a sealing portion (212a), and the above-mentioned 1-3a sealing portion (213a).
- the above-mentioned 1-1b sealing portion (211b), the 1-2b sealing portion (212b), and the 1-3b sealing portion are connected.
- the above-mentioned 1-1b sealing portion (211b), the 1-2b sealing portion (212b), and the 1-3b sealing portion (213b) are formed integrally.
- the above-mentioned first sealing portion (210) forms a second outer edge by the above-mentioned 1-1b sealing portion (211b), the above-mentioned 1-2b sealing portion (212b), and the above-mentioned 1-3b sealing portion (213b).
- the above-mentioned first outer edge and the above-mentioned second outer edge are spaced apart from each other.
- the above-mentioned first outer edge is arranged inward of the above-mentioned second outer edge. That is, the first outer edge is positioned closer to one end (41) and the end (43) of the connecting member (141, 142) than the second outer edge.
- the second sealing portion (220) is arranged inside the first outer rim.
- the first outer rim prevents the second sealing portion (220) from overflowing outside the first sealing portion (210).
- the second outer rim further prevents the second sealing portion (220) from overflowing.
- an error in the application amount of the resin composition may occur.
- the second sealing portion (220) may overflow outside the first outer rim.
- the resin composition overflowing outside the first outer rim is prevented from flowing outside the first sealing portion (210) by the second outer rim. Accordingly, the resin composition can be prevented from flowing into the light source portion (130) during the process.
- the height of the 1-1a sealing portion (211a) and the height of the 1-1b sealing portion (211b) may be the same.
- the height of the 1-2a sealing portion (212a) and the height of the 1-2b sealing portion (211b) may be the same.
- the height of the 1-3a sealing portion (213a) and the height of the 1-3b sealing portion (213b) may be the same.
- the height of the 1-1a sealing portion (211a) and the height of the 1-1b sealing portion (211b) may be different.
- the height of the 1-1a sealing portion (211a) may be greater than the height of the 1-1b sealing portion (211b).
- the height of the 1-2a sealing portion (212a) and the height of the 1-2b sealing portion (211b) may be different.
- the height of the 1-2a sealing portion (212a) may be greater than the height of the 1-2b sealing portion (211b).
- the height of the 1-3a sealing portion (213a) and the height of the 1-3b sealing portion (213b) may be different.
- the height of the 1-3a sealing portion (213a) may be greater than the height of the 1-3b sealing portion (213a). That is, the height of the first outer edge may be greater than the height of the second outer edge.
- the first outer rim of the genitalia acts as a main dam.
- the second outer rim acts as an auxiliary dam. Accordingly, the height of the first outer rim is made large to prevent overflow of the second sealing portion (220).
- the height of the second outer rim is made relatively small. Accordingly, overflow of the second sealing portion (220) is additionally prevented.
- the size of the sealing portion can be made small.
- a lighting device according to another embodiment includes a plurality of outer rims. Accordingly, overflow of the second sealing portion (220) caused by an error in the amount of application during a process can be prevented. Therefore, the reliability of the lighting device according to another embodiment can be improved.
- a vehicle headlamp (90) having a lighting device includes a light source module (10) and a housing (92).
- the light source module (10) is disposed inside the housing (92) and radiates light in a lateral direction. The radiated light may be reflected in an emission direction through an inner surface (92A) of the housing (92).
- the light source module (10) includes the lighting device described above.
- the housing (92) may include a metal or non-metallic material.
- the non-metallic material may include a plastic material.
- the housing (92) may be a reflector of the headlamp.
- the inner surface (92A) of the housing (92) may be a surface coated with a highly reflective material or may include a reflective layer having an anti-reflection (AR) material.
- AR anti-reflection
- the highly reflective material includes at least one of metals, such as Al, Ag, and Au.
- the above antireflective material may include at least one of MgF 2 , Al 2 O 3 , SiO, SiO 2 , TiO 2 +ZrO 2 , TiO 2 , and ZrO 2 .
- the reflective layer of the inner surface (92A) may be a single layer or a multilayer.
- the headlamp (90) may include an inner lens and/or an outer lens that projects light emitted through the housing (92). Depending on the shape of the inner lens or the number of light source units, the light distribution pattern of light emitted from the light source module (10) may be adjusted.
- the light source module (10) selectively irradiates light of a high beam distribution pattern and a low beam distribution pattern.
- the high beam distribution pattern or the low beam distribution pattern may be automatically turned on and off depending on the driving mode or driving situation.
- the inner surface (92A) of the housing (92) can include a partially domed or partially elliptical paraboloid.
- the inner surface (92A) can have a plurality of facets.
- the facets can be free-form, flat, and/or curved (e.g., concave or convex) members.
- a single facet can have a free-form portion, and/or a flat portion, and/or a curved portion (e.g., any combination thereof).
- the facets (or at least the inwardly facing surfaces on the facets) can be at least approximated, or otherwise defined by algebraic equations.
- the shape or inwardly facing surfaces of the facets can be expressed by one or more fifth-order algebraic equations (although other equations of any order are also possible).
- the surface (or, for example, the coating) of the facets has a high reflectivity (e.g., a reflectivity of greater than 80%).
- Non-limiting examples of facets and/or coatings on the facets include aluminum and silver, although other reflective materials may be used.
- the inner surface (92A) of the housing (92) is spaced laterally from the light source module (10), and light emitted from the light source module (10) can be reflected by the inner surface (92A) and focused toward the exit side of the housing (92), and can be irradiated as a high beam or a low beam.
- the outer side of the housing (92) can include various features and accessories for mounting or connecting the headlamp (90) to the interior of the vehicle.
- the outer side of the housing (92) can have an electrical interface, such as a socket, for connecting power and/or signals.
- the housing (92) and the cavity (95) described above are examples and can be changed into various shapes.
- the housing (92) according to the embodiment can function as a reflector of the left/right headlamps (90).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Led Device Packages (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims (17)
- 리세스부를 포함하는 방열 플레이트;상기 리세스부에 배치되고 패드를 갖는 회로기판;상기 방열 플레이트 상에 배치되고, 본딩 패드 및 발광소자를 포함하는 광원부;상기 회로기판의 패드와 상기 광원부의 본딩 패드를 연결하는 연결부재; 및상기 연결 부재 상에 배치되는 실링부를 포함하고,상기 실링부는 외곽 테두리를 형성하는 제1실링부; 및 상기 외곽 테두리의 내부에 배치되는 제2실링부를 포함하고,상기 제1실링부와 상기 제2실링부는 동일한 수지 조성물을 포함하는 조명 장치.
- 제1항에 있어서,상기 수지 조성물은 베이스 수지 및 충전재를 포함하고,상기 베이스 수지는 올리고머, 모노머 및 광 개시제를 포함하고,상기 올리고머는 상기 수지 조성물 전체 중량에 대해 45 중량% 내지 65 중량%로 포함되고,상기 모노머는 상기 수지 조성물 전체 중량에 대해 30 중량% 내지 50 중량%로 포함되고,상기 광개시제는 상기 수지 조성물 전체 중량에 대해 1 중량% 내지 5 중량%로 포함되고,상기 충전재는 상기 수지 조성물 전체 중량에 대해 2 중량% 내지 10 중량%로 포함되는 조명 장치.
- 제1항에 있어서,상기 수지 조성물의 경화 후 모듈러스는 100㎫ 내지 8000㎫인 조명 장치.
- 제3항에 있어서,상기 수지 조성물의 경화 전 칙소성은 2 내지 4인 조명 장치.
- 제2항에 있어서,상기 충전재의 입경은 5㎛ 내지 30㎛인 조명 장치.
- 제1항에 있어서,상기 연결 부재는상기 광원부의 본딩 패드와 연결되는 일단;상기 회로기판의 패드와 연결되는 타단; 및상기 일단에서 상기 타단을 향해 연장하는 센터부를 포함하고,상기 제1실링부는 상기 일단과 가깝게 배치되는 제1-1 실링부, 상기 타단과 가깝게 배치되는 제1-2 실링부 및 상기 제1-1 실링부와 상기 제1-2 실링부를 연결하는 제1-3 실링부를 포함하고,상기 제1-1 실링부, 상기 제1-2 실링부 및 상기 제1-3 실링부는 일체로 형성되는 조명 장치.
- 제6항에 있어서,상기 제2실링부의 최대 높이는 상기 제1실링부의 최대 높이의 1배 초과 내지 5배인 조명 장치.
- 제6항에 있어서,상기 제1-2 실링부의 최대 높이는 상기 제1-1 실링부의 최대 높이 이상인 조명 장치.
- 제8항에 있어서,상기 제1-2 실링부의 최대 높이는 상기 제1-1 실링부의 최대 높이의 1배 내지 2.5배인 조명장치.
- 제6항에 있어서,상기 제2실링부와 상기 연결 부재는 제1간격으로 이격하고,상기 제1간격은 상기 연결 부재의 최대 높이와 상기 제2실링부 사이의 간격으로 정의되고,상기 제1간격은 100㎛ 내지 200㎛인 조명 장치.
- 제6항에 있어서,상기 제1-1 실링부와 상기 발광 소자는 제2간격으로 이격하고,상기 제2간격은 0.8㎜ 내지 1㎜인 조명 장치.
- 제1항에 있어서,상기 발광소자에서 출사되는 광과 상기 제1실링부는 제1 각도를 이루고,상기 발광소자에서 출사되는 광과 상기 제2실링부는 제2 각도를 이루고,상기 제1 각도 및 상기 제2 각도 중 적어도 하나의 각도는 30°이하인 조명 장치.
- 제1항에 있어서,상기 연결 부재는상기 광원부의 본딩 패드와 연결되는 일단;상기 회로기판의 패드와 연결되는 타단; 및상기 일단에서 상기 타단을 향해 연장하는 센터부를 포함하고,상기 제1실링부는 상기 일단과 가깝게 배치되는 제1-1 실링부, 상기 타단과 가깝게 배치되는 제1-2 실링부 및 상기 제1-1 실링부와 상기 제1-2 실링부를 연결하는 제1-3 실링부를 포함하고,상기 제1-1 실링부는 제1-1a 실링부 및 제1-1b 실링부를 포함하고,상기 제1-1a 실링부는 상기 제1-1b 실링부보다 상기 일단에 가깝게 배치되고,상기 제1-2 실링부는 제1-2a 실링부 및 제1-2b 실링부를 포함하고,상기 제1-2a 실링부는 상기 제1-2b 실링부보다 상기 타단에 가깝게 배치되고,상기 제1-1 실링부는 제1-3a 실링부 및 제1-3b 실링부를 포함하는 조명 장치.
- 제13항에 있어서,상기 제1-1a 실링부, 상기 제1-2a 실링부 및 상기 제1-3a 실링부는 제1 외곽 테두리부를 형성하고,상기 제1-1b 실링부, 상기 제1-2b 실링부 및 상기 제1-3b 실링부는 제2 외곽 테두리부를 형성하고,상기 제1 외곽 테두리와 상기 제2 외곽 테두리는 이격하는 조명 장치.
- 제14항에 있어서,상게 제2실링부는 상기 제1 외곽 테두리의 내부에 배치되는 조명 장치.
- 제14항에 있어서,상기 제1 외곽 테두리의 높이는 상기 제2 외곽 테두리 높이 이상인 조명 장치.
- 하우징; 및상기 하우징의 내부에 배치되는 광원 모듈을 포함하고,상기 광원 모듈은 제1항 내지 제16항 중 어느 한 항의 조명 장치를 포함하는 헤드 램프.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24823732.3A EP4729832A1 (en) | 2023-06-14 | 2024-06-13 | Lighting device and head lamp |
| CN202480053124.8A CN121729587A (zh) | 2023-06-14 | 2024-06-13 | 照明装置和前照灯 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0076249 | 2023-06-14 | ||
| KR1020230076249A KR20240175942A (ko) | 2023-06-14 | 2023-06-14 | 조명 장치 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024258215A1 true WO2024258215A1 (ko) | 2024-12-19 |
Family
ID=93852433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/008140 Ceased WO2024258215A1 (ko) | 2023-06-14 | 2024-06-13 | 조명 장치 및 헤드 램프 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4729832A1 (ko) |
| KR (1) | KR20240175942A (ko) |
| CN (1) | CN121729587A (ko) |
| WO (1) | WO2024258215A1 (ko) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130119431A1 (en) * | 2011-11-15 | 2013-05-16 | Koito Manufacturing Co., Ltd. | Light emitting module, method for manufacturing light emitting module, and vehicular lamp |
| JP2017212301A (ja) * | 2016-05-24 | 2017-11-30 | スタンレー電気株式会社 | 発光装置、照明装置、車両用照明装置、および、発光装置の製造方法 |
| JP2021009898A (ja) * | 2019-06-28 | 2021-01-28 | 日亜化学工業株式会社 | 発光モジュール及び発光モジュールの製造方法 |
| KR102211091B1 (ko) * | 2017-12-18 | 2021-02-03 | 주식회사 엘지화학 | 유기전자장치 |
| KR20210152792A (ko) * | 2020-06-09 | 2021-12-16 | 엘지이노텍 주식회사 | 조명모듈 및 이를 구비한 조명장치 |
| KR20230010550A (ko) | 2021-07-12 | 2023-01-19 | 현대모비스 주식회사 | 엘이디 모듈 |
-
2023
- 2023-06-14 KR KR1020230076249A patent/KR20240175942A/ko active Pending
-
2024
- 2024-06-13 WO PCT/KR2024/008140 patent/WO2024258215A1/ko not_active Ceased
- 2024-06-13 EP EP24823732.3A patent/EP4729832A1/en active Pending
- 2024-06-13 CN CN202480053124.8A patent/CN121729587A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130119431A1 (en) * | 2011-11-15 | 2013-05-16 | Koito Manufacturing Co., Ltd. | Light emitting module, method for manufacturing light emitting module, and vehicular lamp |
| JP2017212301A (ja) * | 2016-05-24 | 2017-11-30 | スタンレー電気株式会社 | 発光装置、照明装置、車両用照明装置、および、発光装置の製造方法 |
| KR102211091B1 (ko) * | 2017-12-18 | 2021-02-03 | 주식회사 엘지화학 | 유기전자장치 |
| JP2021009898A (ja) * | 2019-06-28 | 2021-01-28 | 日亜化学工業株式会社 | 発光モジュール及び発光モジュールの製造方法 |
| KR20210152792A (ko) * | 2020-06-09 | 2021-12-16 | 엘지이노텍 주식회사 | 조명모듈 및 이를 구비한 조명장치 |
| KR20230010550A (ko) | 2021-07-12 | 2023-01-19 | 현대모비스 주식회사 | 엘이디 모듈 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4729832A1 (en) | 2026-04-22 |
| CN121729587A (zh) | 2026-03-24 |
| KR20240175942A (ko) | 2024-12-23 |
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