WO2025005751A1 - 조명장치 및 램프 - Google Patents
조명장치 및 램프 Download PDFInfo
- Publication number
- WO2025005751A1 WO2025005751A1 PCT/KR2024/009149 KR2024009149W WO2025005751A1 WO 2025005751 A1 WO2025005751 A1 WO 2025005751A1 KR 2024009149 W KR2024009149 W KR 2024009149W WO 2025005751 A1 WO2025005751 A1 WO 2025005751A1
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- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- light source
- molding
- lighting device
- pads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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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
- 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
- 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
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- Embodiments of the invention relate to lighting devices and lamps.
- 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. These LEDs are applied to various lighting devices such as various display devices, indoor lights, and outdoor lights. Recently, lamps using LEDs have been proposed as vehicle light sources. Compared to incandescent lamps, LEDs have the advantage of low power consumption. In addition, LEDs can increase the design freedom of lamps because they are small in size, and they are also economical because of their semi-permanent life. However, since the emission angle of light emitted from LEDs is small, there is a demand to increase the light-emitting area of lamps using LEDs when using LEDs as vehicle lamps.
- Embodiments of the invention provide a lighting module and a lighting device having a member that secures at least a portion of a connecting member that electrically connects a light source unit and a circuit board.
- Embodiments of the invention provide a lighting module and a lighting device having a member that secures a portion or all of a plurality of connecting members that electrically connects a light source unit and a circuit board.
- Embodiments of the invention provide a lighting module and a lighting device having a member that molds a plurality of connecting members on an upper surface of a circuit board and an upper surface of a support plate.
- Embodiments of the invention provide a lighting device and a lamp or an automobile lamp having the same.
- a lighting device comprises: a support plate; a circuit board having a plurality of pads on one side and arranged on the support plate; a light source portion arranged on the support plate and having a light-emitting element on one side and a plurality of bonding pads on the other side; a plurality of connecting members respectively connecting the plurality of pads to the plurality of bonding pads; and a molding portion covering the plurality of connecting members, wherein the molding portion covers an area between the light source portion and the circuit board, the plurality of bonding pads of the light source portion, and the pads of the circuit board, and a position of the highest point of the molding portion can be arranged on an area between the light source portion and the circuit board.
- the highest point of each of the plurality of connecting members may be positioned on an area between the light source portion and the circuit board.
- the highest point of each of the molding portion and the connecting members may be positioned vertically at the center of the area between the light source portion and the circuit board.
- the highest point of each of the molding portion and the connecting members may be positioned closer to the light source portion than the center of the area between the light source portion and the circuit board.
- each of the molding portion and the connecting member may be located closer to the circuit board than the center of the area between the light source portion and the circuit board.
- Each of the connecting members includes a first end connected to each of the bonding pads of the light source portion, a second end connected to each of the pads of the circuit board, and an intermediate wire portion connecting the first and second ends
- the molding portion may include a first end covering a surface of the first end and an upper surface of each of the bonding pads of the light source portion, and a second end covering a surface of the second end and an upper surface of each of the pads of the circuit board.
- a distance between an upper surface of the first end portion and an upper surface of the first portion of the molding portion may be in a range of 0.1 mm to 0.3 mm, and a distance between an upper surface of the second end portion and an upper surface of the second portion of the molding portion may be in a range of 0.1 mm to 0.3 mm.
- a distance between a highest point of each of the intermediate wire portions of the connecting members and a highest point position of the molding portion may be in a range of 0.1 mm to 0.3 mm.
- the support plate may include a concave receiving portion for receiving the circuit board.
- the upper surface of the circuit board and the upper surface of the light source portion may be arranged on the same straight line.
- Each of the plurality of connecting members may be a ribbon wire having a width more than twice its thickness.
- a lamp according to an embodiment of the invention comprises a lighting device emitting white light; and a light guide module or reflector on the lighting device, wherein the lighting device may include the lighting device disclosed above.
- An embodiment of the invention can prevent deformation of the connecting member and cracks in the connecting member by supporting and fixing part or all of a connecting member connecting a light source unit and a circuit board, thereby improving electrical reliability due to the connecting member.
- An embodiment of the invention can prevent movement of the connecting member and block electrical contact between the connecting members by molding part or all of the connecting member connecting a light source unit and a circuit board with a molding part.
- the lighting device can suppress openings or cracks that may occur in the bonding part between the connecting members and pads by the molding part.
- An embodiment of the invention can improve the reliability of a lighting module and a lighting device including the same.
- Figure 1a is a perspective view of a lighting device according to the invention.
- Figure 1b is a side cross-sectional view of the lighting device of Figure 1a.
- Figure 2 is an enlarged view showing the light source unit, circuit board, and connecting members of Figure 1a.
- Figures 3 (A) and (B) are drawings showing a pulling test and an example of crack occurrence for the connecting member of Figure 2.
- FIG. 4a is a perspective view of a lighting device according to a first embodiment of the invention.
- Fig. 4b is an example of a plan view of the lighting device of Fig. 4a.
- Fig. 4c is a perspective view showing the connecting member and the fixing frame of the lighting device of Fig. 4a.
- Figure 5 is an example of a side cross-sectional view of the lighting device of Figure 4a.
- FIG. 6a is a first modified example of a lighting device according to the first embodiment of the invention.
- Fig. 6b is a drawing showing the light source unit and fixed frame of Fig. 6a.
- Fig. 7 is a second modified example of a lighting device according to the first embodiment of the invention.
- Fig. 8 is a drawing showing an example of a fixed frame of the lighting device of Fig. 7.
- FIG. 9 is a side cross-sectional view of a lighting device according to a second embodiment of the invention.
- Fig. 10 is a perspective view showing a light source portion, a molding portion, a connecting member, and a circuit board in the lighting device of Fig. 9.
- Fig. 11 is a plan view for explaining the outer edge of the molding portion of the lighting device of Fig. 10.
- Fig. 12 is a side cross-sectional view of the lighting device of Fig. 11.
- Fig. 13 (a) is an enlarged view showing the bonding pad of the light source unit and the first end of the connecting member in Fig. 12, and (b) is an enlarged view showing the pad of the circuit board and the second end of the connecting member in Fig. 12.
- Fig. 14 is a cross-sectional side view showing a first modified example of the lighting device of Fig. 12.
- Fig. 15 is a cross-sectional side view showing a second modified example of the lighting device of Fig. 12.
- Fig. 16 is a cross-sectional side view showing a third modified example of the lighting device of Fig. 12.
- Fig. 17 is a cross-sectional side view showing another example of the lighting device of Fig. 16.
- Fig. 18 is a cross-sectional side view showing another example of the lighting device of Fig. 12.
- Fig. 19 is an example of a light guide module combined with a lighting device according to the first embodiment of the invention.
- Fig. 20 is an example of a side cross-sectional view of the lighting device of Fig. 19.
- Fig. 21 is a perspective view of a headlamp to which a lighting device according to an embodiment of the invention is applied.
- FIG. 22 is a cross-sectional view of a lighting device having a reflector according to an embodiment of the invention.
- the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.
- the singular may also include the plural unless specifically stated in the phrase, and when it is described as "A and (or) at least one (or more) of B, C," it may include one or more of all combinations that can be combined with A, B, and C.
- the terms first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the nature, order, or sequence of the components are not determined by the terms.
- a certain component when it is described that a certain component is 'connected', 'coupled', or 'connected' to another component, it may include not only the case where the component is directly connected, coupled, or connected to the other component, but also the case 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.
- FIG. 1a is a perspective view of a lighting device according to the invention
- FIG. 1b is a side cross-sectional view of the lighting device of FIG. 1a
- FIG. 2 is an enlarged view showing a light source unit, a circuit board, and a connecting member of FIG. 1a.
- a lighting device (1000) may include a support plate (101), a circuit board (110) disposed on the support plate (101), a light source unit (130) disposed adjacent to the circuit board (110) on the support plate (101), and a connecting member (141, 142) electrically connecting the light source unit (130) and the circuit board (110).
- the above lighting device (1000) can be applied to various lamp devices requiring lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. For example, when applied to vehicle lamps, it 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 scuffs, rear combination lamps, backup lamps, and the like.
- the above lighting device can also be applied to indoor and outdoor advertising devices, display devices, and various types of electric vehicles.
- the above lighting device (1000) can be applied to, for example, head lamps.
- the light source unit (130) and the circuit board (110) may be spaced apart in one direction, for example, in the second direction (Y) among the first and second directions (X, Y).
- the first and second directions (X, Y) are directions that are orthogonal to each other, and the direction that is orthogonal to the first and second directions (X, Y) is a third direction (Z), and the third direction (Z) may be a vertical direction.
- the support plate (101) supports the circuit board (110) and the light source unit (130), and can conduct heat generated from the circuit board (110) and the light source unit (130).
- the support plate (101) may be a heat dissipation plate.
- the support plate (101) may be formed of a metal, or may be formed of a laminated structure of a heat-conductive material and a metal layer.
- the support plate (101) may be formed in a single layer or multiple layers.
- the heat-conductive material may include a ceramic material, AlN, or an aluminum material having an anodized surface layer.
- the metal may include at least one of Al, Ni, Mo, Cu, Cu-alloy, Cu-W, Ag, or Au, and may be formed in a single layer or in a multilayer of two or more metals.
- the support plate (101) may further include a heat dissipation fin at the bottom.
- the above support plate (101) includes an upper portion (102) and a side portion (103), and the upper surface area of the upper portion (102) may be provided as a larger area, for example, twice or more, for example, ten times or more, than the area of the circuit board (110).
- the side portion (103) may be bent downward from an edge of the upper portion (102), and may be arranged one or more along the outer side of the upper portion (102).
- the downward direction is a direction facing the opposite side to the direction in which the circuit board (110) is arranged on the upper surface of the support plate (101).
- An empty space may be provided on the inner side of the side portion (103) and the lower side of the upper portion (102), or a structure such as a heat dissipation fin may be combined.
- a plurality of coupling holes (105, 106) arranged on both sides of the second direction (Y) based on the light source unit (130) may be arranged in the first direction (X).
- An external structure for example, a light guide module (500, see FIG. 19), may be coupled to the support plate (101) through the coupling holes (105, 106).
- the light source unit (130) is arranged on one side of the upper portion (102) of the support plate (101), and the circuit board (110) is arranged on the other side of the upper portion (102).
- the light source unit (130) may be arranged on one side of the circuit board (110).
- the light source unit (130) is arranged on the support plate (101) and may be adhered with an adhesive member (138).
- the adhesive member (138) includes a thermally conductive adhesive member and may be an electrically insulating material such as silicone or epoxy, for example.
- the lower surface of the light source unit (130) may be adhered to the upper surface of the support plate (101) or may be adhered to an area lower than the upper surface of the support plate (101).
- the adhesive member (138) may adhere the light source unit (130) to the upper portion (102).
- the above adhesive member (138) is arranged on the lower surface of the light source unit (130), protrudes outward from the side surfaces of the light source unit (130), and can be adhered to the lower surface of the side surface of the light source unit (130).
- the adhesive member (138) can conduct heat generated from the light source unit (130) to the support plate (101).
- the circuit board (110) may include a resin material or a metal material.
- the circuit board (110) may be formed of any one of a ceramic-based PCB, a metal core PCB (MCPCB), a flexible PCB (FPCB), and a resin-based PCB.
- the circuit board (110) may include a metal layer (110A) at the bottom, a circuit layer (not shown) having pads (111, 112) at the top, a protective layer (110B) made of an insulating material for protecting the circuit layer, and an insulating layer (110C) between the metal layer (110A) and the pads (111, 112).
- the circuit board (110) may be provided as an MCPCB having a metal layer at the bottom, and may transfer heat to the support plate (101).
- the circuit board (110) can be fastened to the upper part (102) by a fastening means (119), and the fastening means (119) can include one or more screws that fasten and tightly attach the circuit board (110) to the upper part (102).
- the fastening means (119) can include a fastening structure and/or a hooking structure as another example.
- the adhesive film (118) can adhere the circuit board (110) to the upper part (102) and can be a thermally conductive tape. When the circuit board (110) is fixed by the fastening means (119), the adhesive film (118) can be removed, and the circuit board (110) can be easily separated.
- the circuit board (110) can be fixed to the upper surface of the support plate (101) using at least one or both of the fastening means (119) or the adhesive film (118).
- the pads (111, 112) of the circuit board (110) may include first and second pads (111, 112) spaced apart from each other.
- the first and second pads (111, 112) may be connected to a connector (115) arranged on an upper portion of the circuit board (110) through 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) may be arranged on one side of the circuit board (110), and the connector (115) may be coupled to the other side of the circuit board (110).
- the fastening means (119) may be arranged in an area between the pads (111, 112) and the connector (115).
- the first and second pads (111, 112) are arranged adjacent to one side of the circuit board (110) and may be selected from Ti, Ru, Rh, Ir, Mg, Zn, Al, In, Ta, Pd, Co, Ni, Si, Ge, Ag, Au and optional alloys thereof.
- Each of the first and second pads (111, 112) includes a single layer or multiple layers, and in the case of multiple layers, may include the same or different metals.
- the circuit board (110) has the protective layer (110B) on the metal layer (110A), and the protective layer (110B) can protect the pads (111, 112) and the circuit layer, and can open the bonding area or the upper surface area of the pads (111, 112).
- the above protective layer (110B) may be an insulating material, such as a solder resist material, that partially exposes the pads (111, 112).
- the light source unit (130) may be bonded to the upper portion (102) of the support plate (101) with the adhesive member (138).
- the adhesive member (138) conducts heat generated from the light source unit (130) to the support plate (101).
- the adhesive member (138) may include a heat-conductive adhesive member, such as a TIM (Thermal interface material), having metal powder or inorganic powder in a resin material.
- a side of the light source unit (130) may face a part of a side of the circuit board (110).
- the light source unit (130) and the circuit board (110) may be electrically connected.
- the light source unit (130) and the circuit board (110) may be connected by at least one connecting member (141, 142).
- the light source unit (130) may include an OLED or an LED.
- the light source unit (130) is driven when power is supplied through the circuit board (110) and emits at least one or more of blue, green, red, and white light. For example, the light source unit (130) can emit white light.
- the bonding pads (134, 135) of the light source unit (130) are positioned adjacent to one side of the circuit board (110).
- the pads (111, 112) of the circuit board (110) are positioned adjacent to the other side of the light source unit (130).
- the bonding pads (134, 135) of the light source unit (130) may be positioned close to the circuit board (110) within the area of the light source unit (130).
- the upper surface of the circuit board (110) may be positioned higher than the upper surface of the light source unit (130) due to the thickness of the circuit board (110).
- the upper surfaces of the pads (111, 112) of the circuit board (110) may be positioned higher than the upper surface position of the bonding pads (134, 135) of the light source unit (130).
- the lower surface of the circuit board (110) may be placed within a receiving portion (108) that is lower than the upper surface of the support plate (101) on which the light source portion (130) is placed.
- the pads of the circuit board (110) may include first and second pads (111, 112) spaced apart from each other, and the bonding pads of the light source unit (130) may include first and second bonding pads (134, 135) spaced apart from each other.
- the connecting member (141, 142) may include a first connecting member (141) and a second connecting member (142) spaced apart from each other.
- the first pad (111) and the first bonding pad (134) may be connected by the first connecting member (141), and the second pad (112) and the second bonding pad (135) may be connected by the second connecting member (142).
- the above pads (111, 112), the bonding pads (134, 135), and the connecting members (141, 142) are described as two each, but may be changed to one, three, or four depending on the connection form.
- the pads (111, 112), the bonding pads (134, 135), and the connecting members (141, 142) are described as having the same number each, but at least one may be a different number.
- the lower end of the light source unit (130) may be electrically connected to the support plate (101) through a via structure, and in this case, the number of the bonding pads (134, 135), the pads (111, 112), and the connecting members (141, 142) may be implemented as one.
- the first bonding pad (134) may 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) may be selected from Ti, Ru, Rh, Ir, Mg, Zn, Al, In, Ta, Pd, Co, Ni, Si, Ge, Ag, Au, and selective alloys thereof.
- the first and second bonding pads (134, 135) may include a single layer or multiple layers, and in the case of multiple layers, may include the same or different metals.
- the first connecting member (141) and the second connecting member (142) may include an electrically conductive wire, and may include at least one of a metal such as Au, Cu, Al, Ag, or a selective alloy thereof.
- the first connecting member (141) and the second connecting member (142) are wires having a width greater than their thickness, for example, ribbon-shaped wires, and the width (W) of each may be 0.4 mm or more, for example, in a range of 0.4 mm to 0.9 mm, and the thickness may be 0.15 mm or less, for example, in a range of 0.07 mm to 0.15 mm.
- the width (W) of each of the first and second connecting members (141, 142) may be more than twice the thickness of the connecting member (141, 142), for example, more than twice and less than 15 times, and if it is smaller than the above range, the connecting member (141, 142) may sag downward, and the bonding force may decrease, the available current may decrease, and the resistance to external force may weaken.
- the width (W) of the connecting member (141, 142) is larger than the above range, there is a problem that the size of the bonding pad (134, 135) or the pad (111, 112) increases or material is wasted.
- the first connecting member (141) and the second connecting member (142) include a first end (41), a second end (43), and an intermediate wire portion (42).
- the first end (41) is bonded to the first bonding pad (134) and the second bonding pad (135), respectively, and the second end (43) is bonded to the first pad (111) and the second pad (112), respectively.
- the intermediate wire portion (42) is connected between the first end (41) and the second end (43) and may have a curved shape.
- the intermediate wire portion (42) may have, for example, a convex curved shape.
- the intermediate wire portion (42) of the first connecting member (141) connects between the first end (41) bonded to the first bonding pad (134) and the second end (43) bonded to the first pad (111).
- the intermediate wire portion (42) of the second connecting member (142) connects between the first end (41) bonded to the second bonding pad (135) and the second end (43) bonded to the second pad (112).
- the intermediate wire portion (42) may extend from the other side of the light source portion (130) to one side of the circuit board (110).
- the intermediate wire portion (42) may have a length longer than the gap between the circuit board (110) and the light source portion (130).
- the upper surface heights of the first end (41) and the second end (43) of the connecting member (141, 142) may be different from each other.
- the upper surface height of the first end (41) of the connecting member (141, 142) may be arranged lower than the upper surface height of the second end (43), and the height of the highest point of the intermediate wire portion (42) may be arranged higher than the upper surface position of the first end (41).
- the height of the highest point of the intermediate wire portion (42) may be arranged higher than the upper surface position of the second end (43).
- the first connecting member (141) and the second connecting member (142) may or may not be parallel to each other.
- the spacing between the first ends (41) of the first connecting member (141) and the second connecting member (142) and the spacing between the second ends (43) may be the same.
- the spacing between the middle wire portions (42) of the first and second connecting members (141, 142) may be the same as the spacing between the first ends (41) and the spacing between the second ends (43).
- the spacing between the first ends (41) of the first connecting member (141) and the second connecting member (142) may be different from the spacing between the second ends (43).
- the spacing (E1) between the first ends (41) of the first connecting member (141) and the second connecting member (142) may be smaller than the spacing (E2) between the second ends (43).
- the imaginary straight lines extending along the first connecting member (141) and the second connecting member (142) may intersect each other.
- each of the first connecting member (141) and the second connecting member (142) has a height difference between the first end (41) and the second end (43).
- first and second ends (41, 43) are bonded to the pads (111, 112) and the bonding pads (134, 135), respectively, a bonding failure or an open failure may occur at each end (41, 43) due to the height difference between the first end (41) and the second end (43) of the first and second connecting members (141, 142).
- the bonding may be performed through an ultrasonic soldering process, and heat of 200 degrees or more is generated.
- an open defect due to a heel crack or the like may occur at the connection portion between the first end (41) and the intermediate wire portion (42) of the connecting member (141, 142) and/or the connection portion or bending portion between the second end (43) and the intermediate wire portion (42), or a bound crack or the like may occur at the boundary portion between the first end (41) or the second end (43) and the pad (111, 112) or the bonding pad (134, 135).
- the design is made by considering the straight line distance between the first end (41) and the second end (43), the angle of inclination extending from the first end (41) to the intermediate wire part (42), and the angle of inclination extending from the second end (43) to the intermediate wire part (42).
- the temperature change is large or there is an external impact
- cracks may occur at the boundary between the intermediate wire part (42) and the first and second ends (41, 43) due to the flow of the intermediate wire part (42) of the connecting member (141, 142). That is, it can be seen that the joint where the wire is bent during soldering is most vulnerable to external force and the environment.
- An embodiment of the invention can provide a member having a molding portion made of a resin material in at least one of a region (A1) of a first end (41), a region (A2) of an intermediate wire portion (42), or a region (A3) of a second end (43) of a connecting member (141, 142).
- the member having the molding portion molds at least one, two or more, or all of the region (A1) of the first end (41), the region (A2) of the intermediate wire portion (42), or the region (A3) of the second end (43) of the connecting member (141, 142), and can fix the position of at least a part of the connecting member (141, 142) from external impact, or can prevent metal oxidation by inhibiting moisture penetration into the regions (A1, A3) of the first and second ends (41, 42).
- the molding part can mold at least one or more regions among the first end (41), the middle wire part (42), and the second end (43) of the first connecting member (141).
- the molding part can mold at least one or more regions among the first end (41), the middle wire part (42), and the second end (43) of the second connecting member (142).
- the member having the molding part can be made of a material having a low elastic modulus, and in this case, the stress transmitted to the wire can be reduced and the bonding strength of the bonding portion can be increased.
- the wire bonding strength (recognized strength) is evaluated by the full test, the reference matching strength is approximately 135 gf per bonding area, and when molded with the member having the molding part, it appears to be more than twice the reference bonding strength.
- the molding part or the member having the molding part will be described in detail in the embodiments described below.
- FIGS. 4A to 4C and FIG. 5 are examples of lighting devices according to the first embodiment of the invention.
- a lighting device (1000) includes a fixing member (120) having a support plate (101), a circuit board (110) and a light source unit (130) on the support plate (101), a connecting member (141, 142) connecting the circuit board (110) and the light source unit (130), and a molding member (122) covering a part of the connecting member (141, 142).
- the light source unit (130) includes a support member (133), and a light-emitting element (131) arranged on the support member (133), and the light-emitting element (131) may include, for example, one or more light-emitting elements.
- the above light source unit (130) may include a resin member (132), and the resin member (132) may be arranged around the light-emitting element (131).
- the above-described support member (133) may include a ceramic substrate or a semiconductor substrate.
- the support member (133) may be provided as a ceramic layer or a metal layer.
- the support member (133) may conduct heat generated from the light-emitting element (131) through the support plate (101).
- the support member (133) may be adhered to the support plate (101) using the adhesive member (138).
- the adhesive member (138) may be in contact along the lower surface and the lower side surface of the support member (133). Since the adhesive member (138) is in contact with the lower surface and the lower side surface of the support member (133), the heat generated through the support member (133) may be conducted to the support plate (101).
- the above-described supporting member (133) can support the light-emitting element (131) and can include a conductive pattern electrically connected to the light-emitting element (131).
- the light source unit (130) can have the light-emitting element (131) on one side and the bonding pad (134, 135) on the other side.
- the light-emitting element (131) can be arranged on one side of the supporting member (131) and the bonding pad (134, 135) can be arranged on the other side of the supporting member (131).
- the upper surface height of the bonding pad (134, 135) can be arranged higher than the upper surface height of the resin member (132) or can be arranged at the same height as the upper surface height of the resin member (132).
- a protection element (not shown) for protecting the light-emitting elements (131) may be placed on the support member (133).
- the protection element may be implemented as a thyristor, a zener diode, or a TVS (transient voltage suppression), and protects the light-emitting elements (131) from ESD (electro static discharge).
- the light-emitting element (131) may include at least one of a blue, green, or red LED chip.
- the light-emitting element (131) may be provided as any one of vertical type, horizontal type, or flip type chips.
- the light-emitting element (131) may include a package having an LED chip and a transparent resin material molding member disposed on the LED chip.
- the resin member (132) may be formed of a single layer or multiple layers of a material having silicone or epoxy.
- the resin member (132) may further include a convex lens (not shown) on the upper portion.
- the light-emitting element (131) may include at least one light-emitting chip (30) disposed on the support member (133) and a wavelength conversion layer (31) disposed on the at least one light-emitting chip (30).
- the light-emitting chip (30) may be arranged one or more times, and may include a plurality of semiconductor layers made of a compound semiconductor of group II and group VI elements and/or a compound semiconductor of group III and group V elements, and 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, and InGaAs.
- the wavelength conversion layer (31) is arranged on the light-emitting chip (30) and may cover the entire upper surface of the light-emitting chip (30).
- the wavelength conversion layer (31) converts a portion of light emitted from the light-emitting chip (30).
- the wavelength conversion layer (31) may be in contact with the upper surface of the light-emitting chip (30) and a part of the resin member (132).
- the wavelength conversion layer (31) may include at least one or two or more of a yellow phosphor, a green phosphor, a blue phosphor, and a red phosphor.
- the light-emitting element (131) can emit white light.
- the light-emitting element (131) can emit light having the highest luminous intensity in a direction perpendicular to the upper surface of the light-emitting element (131).
- the light-emitting element (131) can have LED chips of different wavelengths, and in this case, the wavelength conversion layer can be removed.
- the LED chips of different wavelengths can include a red LED chip, a green LED chip, and a blue LED chip.
- the light emitting element (131) is arranged on an upper side of one side of the support member (133), and the bonding pads (134, 135) may be arranged on an upper side of the other side of the support member (133).
- the bonding pads (134, 135) may include a first bonding pad (134) connected to a cathode of the light emitting element (131), and a second bonding pad (135) connected to an anode of the light emitting element (131).
- the support member (133) has an electrode pattern on which the first and second bonding pads (134, 135) are arranged, and the electrode pattern may electrically connect the light emitting element (131) and the first and second bonding pads (134, 135).
- the first and second bonding pads (134, 135) may be exposed on an upper surface of the other side of the support member (133).
- the distance between the light source unit (130) and the circuit board (110) may be 3 mm or more, for example, 3 mm to 10 mm or 3 mm to 8 mm. If the distance is smaller than the range, a buffer space due to a difference in thermal expansion between the light source unit (130) and the circuit board (110) is reduced, which may deteriorate the electrical reliability of the first and second connecting members (141, 142) when the light source unit (130) moves. If the distance between the light source unit (130) and the circuit board (110) is larger than the range, the length or material of the first and second connecting members (141, 142) increases.
- the above-described fixing member (120) may be arranged on one or both of the circuit board (110) and the support plate (101).
- the above-described fixing member (120) includes the molding portion (122), and the molding portion (122) may mold at least one area of each of the connection members (141, 142) or different areas.
- the above-described fixing member (120) may include a fixing frame (121) for fixing the molding portion (122).
- the fixing frame (121) may be arranged on a lower portion of the fixing member (120), and the molding portion (122) may be arranged on an upper portion of the fixing member (120).
- the fixing frame (121) may be arranged on at least one or both of the circuit board (110) and the support plate (101).
- the above fixed frame (121) can be adhered or joined to the circuit board (110) or/and the support plate (101).
- the fixed frame (121) can be fixed on the circuit board (110) or/and the support plate (101).
- the fixed frame (121) can fix the position of the molding part (122) below the molding part (122).
- the fixed frame (121) can be in contact with at least a portion of the molding part (122), and can be coupled to at least one of the inside or the outside of the molding part (122), or can be coupled to different areas of the molding part (122).
- the fixed member (120) can be composed of the molding part (122) without the fixed frame.
- the molding part (122) can be in contact with at least one or both of the first and second connecting members (141, 142) and can fix the position of at least a portion of each of the first and second connecting members (141, 142).
- the molding part (122) can fix the intermediate wire part (42) of at least one of the first and second connecting members (141, 142) on the circuit board (110).
- the molding part (122) wraps around and supports the periphery of the intermediate wire part (42) of the first and second connecting members (141, 142), and thus can fix the position of the intermediate wire part (42).
- the above fixed frame (121) can be arranged in an area that vertically overlaps with the circuit board (110).
- the molding part (122) molds and supports an area that vertically overlaps with the circuit board (110) among the areas of the middle wire parts (42) of the first and second connecting members (141, 142).
- the molding part (122) molds and supports an area that vertically overlaps with an area between one side of the circuit board (110) and the pad (111, 112) among the areas of the middle wire parts (42) of the first and second connecting members (141, 142).
- the above fixed frame (121) may be attached or bonded to the circuit board (110).
- the fixed frame (121) may be attached to a sub pad (113) disposed within the circuit board (110) using a bonding member (not shown).
- the fixed frame (121) may include a bottom portion (21) attached to the sub pad (113), and support portions (22, 23) bent from one or both ends of the bottom portion (21).
- the support portions (22, 23) may be bent from one or both ends of the bottom portion (21) in a third direction (Z) of the circuit board (110).
- the bent portion between the bottom portion (21) and the support portions (22, 23) may include a curved surface.
- the bottom portion (21) may be disposed between the pads (111, 112) and one side of the circuit board (110). As shown in FIG.
- the distance (G1) between the support members (22, 23) on both sides of the fixed frame (121) may be greater than the maximum length in the first direction (X) of the region having the pads (111, 112).
- the distance (G1) between the support members (22, 23) in the first direction (X) may be greater than the maximum length (D2) of the region having the connecting members (141, 142).
- the sub pad (113) may be formed of the same material as the pads (111, 112).
- the fixed frame (121) may be formed of a metal material, and may be formed of, for example, at least one of Cu, Ti, Al, Pd, Co, Ni, Ag, and Au, or an alloy of two or more of the above metals.
- the fixed frame (121) may be formed in a single layer or multiple layers using the metal.
- the number of the fixed frames (121) and the number of the molding parts (122) may be the same.
- the number of the molding parts (122) may be greater than the number of the fixed frames (121), and in this case, the molding parts (122) may be formed in different areas of the fixed frames (121).
- the fixed frames (121) may be made of a non-metallic material.
- the molding part (122) is disposed on the fixed frame (121), and the fixed frame (121) can be disposed within the area of the molding part (122). That is, the fixed frame (121) can be attached to the upper surface of the circuit board (110) and embedded in the lower portion of the molding part (122).
- the molding part (122) can be disposed in the area between the surface of the bottom portion (21) of the fixed frame (121) and the support parts (22, 23).
- the molding part (122) can be disposed on the upper and outer sides of the support parts (22, 23).
- the molding part (122) can be disposed around the support parts (22, 23). Accordingly, the molding part (122) can cover the entire upper surface of the fixed frame (121). Additionally, the molding portion (122) may be in contact with at least one or both of the surface of the fixed frame (121) and the upper surface of the circuit board (110).
- the molding portion (122) may be arranged in a region between the first end (41) and the second end (43) of the first connecting member (141).
- the molding portion (122) may be arranged in a region between the first end (41) and the second end (43) of the second connecting member (142).
- the molding portion (122) may cover a highest point region of the first connecting member (141), and a height of the uppermost end of the molding portion (1220) may be positioned higher than a highest point of the first connecting member (142).
- the molding portion (122) may cover a highest point region of the second connecting member (142), and a height of the uppermost end of the molding portion (1220) may be positioned higher than a highest point of the second connecting member (142).
- the molding part (122) can cover the highest point area of the intermediate wire part (42) of the first and second connecting members (141, 142), and can cover the area of the intermediate wire part (42) that overlaps the circuit board (110) in a vertical direction on the circuit board (110).
- the molding part (122) may include a resin material such as silicone or epoxy, acrylate, urethane, polyolefin, UV resin, or an insulating material, or may be a selective mixture thereof.
- the molding part (122) may be dispensed on the fixed frame (121) and then cured by a method selected from high temperature curing, room temperature curing, or UV curing.
- the molding part (122) may be an adhesive or an insulating material that is adhered to the connecting members (141, 142).
- the molding part (122) may include a diffusion agent or a reflective material inside.
- the molding part (122) has a plurality of side surfaces and an upper surface, and edge portions between the plurality of side surfaces may include curved or angled surfaces, for example, have curved surfaces, and edge portions between each of the side surfaces and the upper surface may have curved or angled surfaces, for example, have curved surfaces.
- the support parts (22, 23) of the fixed frame (121) may be arranged as first and second support parts (22, 23) arranged on both sides of the first direction (X) of the bottom part (21), or as the first support part (22) or the second support part (23) arranged on one end or the other end of the first direction (X) of the bottom part (21).
- the edge part of the upper surface of the support parts (22, 23) in the second direction (Y) may be a curved surface or an angled surface.
- the support parts (22, 23) may protrude toward the outer area of the intermediate wire part (42) of each of the first and second connecting members (141, 142).
- the fixed frame (121) may further include a support part (not shown) protruding into the area between the first and second connecting members (141, 142).
- the above support members (22, 23) may be one or more in number, and may be positioned in an area that protrudes from the fixed frame (121) toward the upper surface of the molding member (122) and does not overlap in a direction perpendicular to the upper surface of the support plate (101) with the intermediate wire member (42) of the first and second connecting members (141, 142).
- the above-described fixing member (120) and the first and second connecting members (141, 142) may overlap in a direction perpendicular to the upper surface of the support plate (101) (i.e., in the Z direction). Part of the fixing member (120) and the first and second connecting members (141, 142) may overlap in a direction perpendicular to the upper surface of the support plate (101). Part of the first and second connecting members (141, 142), the fixing member (120), and the circuit board (110) may overlap in a direction perpendicular to the upper surface of the support plate (101). The molding part (122) of the fixing member (120) and part of the first and second connecting members (141, 142) may overlap in a direction perpendicular to the upper surface of the support plate (101).
- the above-described fixing member (120) can separate the position of the intermediate wire portion (42) of the first and second connecting members (141, 142) from the upper surface of the circuit board (110).
- the above-described molding member (122) can separate the position of the intermediate wire portion (42) of the first and second connecting members (141, 142) from the upper surface of the fixing frame (121).
- the highest point area of the intermediate wire portion (42) can be arranged between the upper surface of the circuit board (110) and the upper surface of the molding member (122).
- the highest point area of the intermediate wire portion (42) can be arranged between the lower surface of the molding member (122) and the upper surface of the molding member (122).
- the highest point area of the intermediate wire portion (42) can be arranged between the upper surface of the fixing frame (121) and the molding member (122).
- the upper height (H1) of the molding member (122) based on the upper surface of the circuit board (110) may be higher than the height of the highest point of the connecting member (141, 142).
- the positions of the highest points of the first and second connecting members (141, 142) based on the upper surface of the circuit board (110) may be arranged between the upper end of the molding member (122) and the fixed frame (121).
- the height of the highest point of the first and second connecting members (141, 142) based on the upper surface of the circuit board (110) may be higher than the bottom portion (21) of the fixed frame (121) and lower than the upper height of the support member (22, 23).
- the position of the highest point of the first and second connecting members (141, 142) based on the upper surface of the circuit board (110) may be higher than the upper end of the support member (22, 23) of the fixed frame (121).
- At least one or both of the support parts (22, 23) of the fixed frame (121) may include a hole (22A, 23A) on the inside.
- the molding part (122) may be coupled to the hole (22A, 23A) of the support parts (22, 23). Since the molding part (122) is coupled to the hole (22A, 23A) of the support parts (22, 23), the molding part (122) may be prevented from being detached or separated from the fixed frame (121).
- the holes (22A, 23A) may be circular or polygonal, and may be arranged one or more in each support part (22, 23).
- the fixed frame (121) may include at least one of a groove, a catch projection, or a catch protrusion for fixing the molding part (122).
- the length (D0) of the fixing member (120) is a length in the first direction (X) orthogonal to the extension direction of the connecting members (141, 142), and is the maximum length of the molding part (122) in the first direction (X).
- the length (D0) of the fixing member (120) in the first direction (X) may be greater than the maximum length in the first direction (X) of the region where the first and second pads (112, 111) are placed.
- the length (D0) of the fixing member (120) may be greater than the minimum separation distance (D3) between the first and second connecting members (141, 142) in the first direction (X) and greater than the maximum length (D2) of the region having the first and second connecting members (141, 142).
- the length (D1) of the fixed frame (121) in the first direction (X) may be greater than the maximum length in the first direction (X) of the area having the first bonding pad (134) and the second bonding pad (135).
- the length (D1) of the fixed frame (121) in the first direction (X) may be greater than the length (D5) of the light source unit (130).
- the length (D0) of the fixed member (120) in the first direction (X) varies depending on the extension direction of the connecting member (141, 142), and for example, may be a length capable of covering a middle area of two connecting members (141, 142) spaced apart in the first direction (X), or may have a length that is 1.5 times or more greater than the length (maximum separation distance) of an area where the two connecting members (141, 142) are placed.
- the length (D1) of the fixed frame (121) in the first direction (X) may be greater than the maximum length in the first direction (X) of an area having the first pad (111) and the second pad (112).
- the first direction (X) side surfaces of the fixing member (120) may be arranged further outward in the first direction (X) than the first direction (X) outer surfaces of each bonding pad (134, 135) and further outward than the first direction (X) outer surfaces of each pad (111, 112).
- the fixing member (120) may prevent vertical and horizontal flow of the first and second connecting members (141, 142) with respect to the upper surface of the circuit board (110), thereby preventing a short circuit problem caused by contact between the connecting members (141, 142) and the upper portion (102) of the support plate (101).
- the bottom width (C2) of the fixed frame (121) in the second direction (Y) may be equal to or smaller than the upper surface width of the molding portion (122), and may be smaller than the bottom width (C0) of the fixed member (120). Since the bottom width (C0) of the fixed member (120) is arranged to be larger than the bottom width (C2) of the fixed frame (121), the molding portion (122) can seal the fixed frame (121), and increase the bonding area between the molding portion (122) and the circuit board (110).
- the bottom width (C0) of the fixing member (120) in the second direction (Y) is the bottom width of the molding part (122) and may be smaller than the distance (C1) between the pads (111, 112) of the circuit board (110) and one side surface of the circuit board (110). Accordingly, the fixing member (120) may be disposed between the pads (111, 112) and one side surface of the circuit board (110) on the upper surface of the circuit board (110). The fixing member (120) may be disposed between the light source unit (130) and the pads (111, 112).
- the distance (D4) between the light source unit (130) and the pads (111, 112) of the circuit board (110) may be more than 1 time, for example, more than 1 time and less than 3 times the bottom width (C0) of the fixing member (120).
- the width (P2) of the first and second bonding pads (134, 135) in the second direction (Y) may be 0.7 mm or more, for example, in a range of 0.7 mm to 1 mm
- the length (P1) in the first direction (X) may be 1 mm or more, for example, in a range of 1 mm to 1.4 mm.
- the width (P4) of the first and second pads (111, 112) in the second direction (Y) may be arranged in a range of 80% to 120% of the width (P2) of the first and second bonding pads (134, 135), respectively.
- the length (P3) of the first and second pads (111, 112) in the first direction (X) may be arranged in a range of 80% to 120% of the length (P1) of the first and second bonding pads (134, 135), respectively.
- both ends of the fixed frame (121) may further protrude a predetermined distance (K1, K2) from the outer sides of each of the first and second connecting members (141, 142) toward the outer sides of each of the first and second bonding pads (134, 135), and for example, the distance (K1, K2) may be 0.2 mm or more, for example, in a range of 0.2 mm to 0.8 mm.
- the distance (K1, K2) may be a distance that can prevent the problem of the middle wire part (42) of the connecting member (141, 142) and the support part (22, 23) of the fixed frame (121) coming into contact when the middle wire part (42) of the connecting member (141, 142) moves to both sides in the first direction (X).
- the above fixing member (120) fixes and supports the connecting member (141, 142) on the circuit board (110), thereby preventing movement of the connecting member (141, 142) and preventing a short circuit problem between the connecting member (141, 142) and the support plate (101). Since each of the support members (22, 23) of the fixing frame (121) is coupled with the inside of the molding part (122), expansion or contraction of the molding part (122) in the first direction (X) can be suppressed. In addition, by protecting the area between the two ends of the connecting member (141, 142) by an external force with the molding part (122), deformation of the connecting member (141, 142) can be reduced and external exposure can be reduced, and a short circuit problem of the intermediate wire part (42) can be prevented.
- FIGS. 6A and 6B are first modified examples of a lighting device according to the first embodiment of the invention.
- the lighting device includes a recess (105) in which the light source unit (130) is received, and the recess (105) may be concave from one side of the circuit board (110) toward the other side.
- a length (R2) of the recess (105) in a first direction (X) may be greater than a length (D5, see FIG. 4B) of the light source unit (130) in the first direction, and for example, the length (R2) may be more than 1 time and less than 2 times the length (D5).
- a length (R1) of the recess (105) in a second direction (Y) may be greater than a length (D6, see FIG.
- the length (R1) may be more than 0.5 times and less than 2 times the length (D6). That is, the light source unit (130) may be partially or entirely stored in the first direction (X) within the recess (105). Accordingly, a portion of the light source unit (130) may be placed further inward than one side of the circuit board (110).
- a first pad (111) and a second pad (112) may be arranged on both sides of the first direction (X) of the recess (105) of the circuit board (110). That is, the first and second pads (111, 112) may be spaced apart from each other by a distance greater than the length (R2) of the recess (105) in the first direction (X).
- the top-view shape of the recess (105) may have a shape corresponding to the top-view shape of the light source unit (130), and may be, for example, a square shape or a square shape with curved corners.
- the top-view shape of the recess (105) may be a shape in which at least a portion of the side surface of the recess (105) has a curved surface.
- the adhesive member (138) that adheres the light source unit (130) to the upper portion (102) may be placed within the recess (105).
- the adhesive member (138) may be spaced apart from the inner surface of the recess (105) or may be in contact with the inner surface of the recess (105).
- the light source unit (130) may be accommodated within the recess (105) and placed stably.
- the above fixing members (120A, 120B) may include first and second fixing members (120A, 120B) spaced apart in the first direction (X) and arranged on both sides of the light source unit (130).
- the first fixing member (120A) and the second fixing member (120B) may correspond to each other on both sides of the first direction (X) of the recess (105).
- the first and second fixing members (120A, 120B) may be arranged to face each other on both sides of the first direction (X) of the recess (105).
- the first bonding pad (134) of the light source unit (130) and the first pad (111) of the circuit board (110) are connected by the first connecting member (141), and the second bonding pad (135) of the light source unit (130) and the second pad (112) of the circuit board (110) are connected by the second connecting member (142).
- the first connecting member (141) and the second connecting member (142) can be extended in the first direction (X).
- Each of the first and second fixing members (120A, 120B) includes a fixing frame (121A, 121B) and a molding part (122A, 122B).
- the first fixing member (120A) may be disposed in an area between the recess (105) and the first pad (111).
- the second fixing member (120B) may be disposed in an area between the recess (105) and the second pad (112).
- the gap between the first and second molding parts (122A, 122B) may be spaced apart by a length (R2) or more in the first direction (X) of the recess (105).
- each of the first and second fixing members (120A, 120B) may be configured with a molding part (122A, 122B) without the fixing frame (121A, 121B).
- the first molding portion (122A) of the first fixing member (120A) fixes a portion of the first connecting member (141) on the circuit board (110), and the second molding portion (122A) of the second fixing member (120B) fixes a portion of the second connecting member (142) on the circuit board (110).
- the first molding portion (122A) may be arranged in an area of the upper surface of the circuit board (110) that vertically overlaps with the middle wire portion (42) of the first connecting member (141).
- the second molding portion (122B) may be arranged in an area of the upper surface of the circuit board (110) that vertically overlaps with the middle wire portion (42) of the second connecting member (142).
- first and second connecting members (141, 142) are molded into the molding members (122A, 122B) of the first and second fixing members (120A, 120B), and the positions of the middle wire parts (42) of the first and second connecting members (141, 142) can be fixed by the molding members (122A, 122B).
- Each of the fixing frames (121A, 121B) can be adhesively bonded to the circuit board (110) or joined to a sub pad (113 in FIG. 5).
- the position of the highest point of the first connecting member (141) with respect to the upper surface of the circuit board (110) may be lower than the position of the highest point of the first fixing member (120A) or the position of the highest point of the first molding part (122A).
- the position of the highest point of the second connecting member (142) with respect to the upper surface of the circuit board (110) may be lower than the position of the highest point of the second fixing member (120B) or the position of the highest point of the second molding part (122B).
- the length (D10) of each of the first and second fixing members (120A, 120B) in the first direction (X) may be greater than the length (C10) in the second direction (Y).
- the length (D10) of each of the first and second fixing members (120A, 120B) in the second direction (Y) may be greater than the length (P3) of each of the first and second pads (111, 112) in the second direction (Y), and the length (C10) of each of the first and second fixing members (120A, 120B) in the first direction (X) may be greater than the length (P4) of each of the first and second pads (111, 112) in the first direction (X).
- the lengths (P3, P4) of the first and second pads (112, 112) in the first and second directions (X, Y) may vary depending on the direction in which the connecting member (141, 142) extends.
- the first and second fixing members (120A, 120B) may include a bottom portion (21) as disclosed in Fig. 6(b) and support portions (22, 23) bent on one or both sides of the second direction (Y) of the bottom portion (21).
- the molding portions (122A, 122B) may cover the bottom portion (21) and the support portions (22, 23).
- the height of the highest point of the first and second connecting members (141, 142) based on the upper surface of the circuit board (110) may be higher than the bottom portion (21) of the fixing frame (121A) and lower than the upper height of the support portions (22, 23).
- the height of the highest point of the first and second connecting members (141, 142) based on the upper surface of the circuit board (110) may be higher than the upper height of the support member (22, 23) of the fixed frame (121A) and lower than the highest point height of the first and second molding members (122A, 122B).
- the length (D10) of each of the molding members (122A, 122B) or the fixed members (120A, 120B) in the second direction (Y) may be smaller than the length (R1) of the recess (105) in the second direction (Y).
- the interval in the first direction (X) between the first and second fixed members (120A, 120B) may be longer than the length (R2) of the recess (105) in the first direction (X), and may reduce interference with light emitted from the light source unit (130).
- the above molding portion (122A, 122B) can be formed within the hole (22A, 23A) of the support portion (22, 23). That is, the molding portion (122A, 122B) can extend to the inside of the hole (22A, 23A) of the support portion (22, 23), the inner side and the outer side of the support portion (22, 23), and be adhered and fixed to the fixed frame (121A, 121B).
- the inner surface of the molding part (122A, 122B) may be inclined with respect to the upper surface of the circuit board (110), or the area between the first and second fixing members (120A, 120B) and the molding part (122A, 122B) may not overlap with the upper area of the light-emitting element (131) in the first direction (X).
- the area between the first and second fixing members (120A, 120B) and the molding part (122A, 122B) may not overlap with the upper area of the light-emitting element (131) in the second direction (Y).
- the length (D10) of each of the first and second fixing members (120A, 120B) in the second direction (Y) is different depending on the extension direction of the first and second connecting members (141, 142), and may be, for example, a length that can cover a part of one connecting member (141, 142), or may be at least twice, for example, at least three times, larger than the width (W in FIG. 4b) of the one connecting member (141, 142).
- the first and second fixing members (120A, 120B) fix and support, respectively, a portion of the first and second connecting members (141, 142), for example, a portion of the middle wire portion (42), on the circuit board (110), thereby preventing movement of each of the first and second connecting members (141, 142), and preventing a short circuit problem between the first and second connecting members (141, 142) and the support plate (101).
- FIGS. 7 and 8 are second modified examples of a lighting device according to the first embodiment of the invention.
- the above molding part (122C) is arranged on the periphery of the lower frame (25) of the above fixing member (120C) and the surface and periphery of the upper frame (26), and is caught by the catch structure between the lower frame (25) and the upper frame (26), so that detachment or separation can be prevented by the structure or shape of the fixing frame (121C).
- the lower part of the molding part (122C) may have a cylindrical or polygonal cylindrical shape, and the upper surface may have a convex curved surface or a flat surface.
- the upper end of the molding part (122C) may be positioned higher than the upper height (H2) of the fixing frame (121C) and higher than the upper surface height of the circuit board (110) based on the upper surface of the support plate (101).
- the upper end of the molding portion (122C) may have a height higher than the highest point of the first and second connecting members (141, 142) based on the upper surface of the support plate (101).
- a portion of the molding portion (122C) may extend to the upper surface of the circuit board (110).
- a portion of the molding portion (122C) may extend above at least one of the first end (41) and the second end (43) of the first connecting member (141).
- a portion of the molding portion (122C) may extend above at least one of the first end (41) and the second end (43) of the second connecting member (142).
- a portion of the molding portion (122C) may extend above at least one of the first and second bonding pads (134, 135).
- a portion of the molding portion (122C) may extend above at least one of the first and second pads (111, 112).
- the region to which the molding portion (122C) extends may include at least one or two or more of the configurations disclosed above, for example, the first end (41), the second end (43), the bonding pad (134, 135), or the pad (111, 112).
- the first and second connecting members (141, 142) are each connected between the bonding pads (134, 135) of the light source unit (130) and the pads (111, 112) of the circuit board (110), and extend onto the fixed frame (121C).
- the molding member (122C) is formed inside the recess (106) and on the surface of the fixed frame (121C), and surrounds a part of the first and second connecting members (141, 142), for example, a part of the intermediate wire part (42).
- the molding member (122C) can vertically overlap with the recess (106) based on the upper surface of the support plate (101), and protrudes above the highest point of the connecting member (141, 142), and supports and fixes a part of the connecting member (141, 142), that is, the intermediate wire part (42).
- a part of the molding part (122C) may be in contact with the inner surface of the recess (106) of the circuit board (110) and/or the upper surface of the circuit board (110).
- a part of the molding part (122C) may be in contact with the other side of the light source part (130) and may be in contact with the upper surface of the support plate (101).
- a part of the molding part (122C) may be in contact with the surface of the adhesive member (138).
- the fixing member (120C) fixes and supports the connecting member (141, 142) in the area between the circuit board (110) and the light source part (110), thereby preventing movement of the connecting member (141, 142) and preventing a short circuit problem between the connecting member (141, 142) and the support plate (101).
- FIGS. 9 to 13 are drawings of a lighting device according to a second embodiment of the invention.
- the lighting device may include a support plate (101), a circuit board (110), a light source unit (130), a connecting member (141, 142), and a molding unit (171).
- the configuration of the support plate (101), the circuit board (110), the light source unit (130), and the connecting member (141, 142) may include the configuration and description of the first embodiment disclosed above.
- the support plate (101) has a concave recess (108) in the upper portion (102), into which the lower portion of the circuit board (110) can be inserted.
- the lower surface of the circuit board (110) within the recess (108) can be bonded to the bottom of the recess (108) using an adhesive film (118). Since the circuit board (110) is placed within the recess (108), the height of the upper surface of the circuit board (110) can be placed lower with respect to the upper surface of the support plate (101) on which the light source unit (130) is placed.
- the upper surface of the circuit board (110) may be positioned on a horizontal straight line extending from the upper surface of the light source unit (130) with respect to the upper surface of the support plate (101) on which the light source unit (130) is positioned, or may be positioned lower than the horizontal straight line extending from the upper surface of the light source unit (130).
- the height of the highest point (Pz1, FIG. 12) of the connecting member (141, 142) may be lower than the height of the highest point of the connecting member (141, 142) of FIG. 2.
- the molding part (171) may be arranged on the other side region of the light source part (130) and one side region of the circuit board (110).
- the molding part (171) may be arranged on the other side region of the light source part (130), one side region of the circuit board (110), and a region between the light source part (130) and the circuit board (110).
- the other side region of the light source part (130) is a region adjacent to the circuit board (110) among the regions of the light source part (130) and is a region that does not overlap with the light emitting element (131) in the vertical direction (Z).
- the other side region of the light source part (130) is a region that overlaps with the bonding pads (134, 135) of the light source part (130) in the vertical direction.
- One area of the circuit board (110) is an area adjacent to the light source unit (130) and may be an area that overlaps vertically with the pads (111, 112).
- the molding portion (171) may extend from the other side of the light source portion (130) to one side of the circuit board (110).
- the top view shape of the molding portion (171) may include a polygonal shape such as a square, a circular or oval shape, or a shape having straight and curved edges.
- the molding portion (171) seals the surfaces of the bonding pads (134, 135) and the pads (111, 112), and can prevent oxidation of the bonding pads (134, 135) and the pads (111, 112). In addition, the molding portion (171) can suppress a decrease in the bonding force between the first and second ends (41, 43) of the connecting member (141, 142) and the bonding pads (134, 135) or the pads (111, 112).
- the molding part (171) includes a resin material, and may include a transparent resin material, a translucent resin material, or a reflective resin material.
- the material of the molding part (171) may include a resin material such as silicone or epoxy, an acrylate, a urethane, a polyolefin, a UV resin, or an insulating material, or may be a selective mixture thereof.
- the molding part (171) may include at least two or more of the following materials: an oligomer, a monomer, a filler, an antioxidant, a photoinitiator, and an antioxidant.
- the outer line of the molding portion (171) may include straight sections (M1, M2, M3, M4) and curved sections (M31, M32, M41, M42).
- the straight sections (M1, M2, M3, M4) may include a straight line shape in which a straight line connecting both ends of each straight section (M1, M2, M3, M4) is parallel to a straight line in the first direction (X) or a straight line in the second direction (Y) or has an angle of 10 degrees or less or 5 degrees or less.
- the curved sections (M31, M32, M41, M42) may include a convex or concave curve shape in the area between adjacent straight sections.
- the above straight portions (M1, M2, M3, M4) may include a first straight portion (M1) extending in a first direction (X) on the light source portion (130), a second straight portion (M2) extending in a first direction (X) on the circuit board (110), and a third straight portion (M3) and a fourth straight portion (M4) extending in a second direction (Y) from both ends between the first straight portion (M1) and the second straight portion (M2).
- the third and fourth straight portions (M3, M4) are arranged on the support plate (101).
- the above curved portions (M31, M32, M41, M42) may include a convex first curved portion (M31) connecting the first straight portion (M1) and the third straight portion (M3), a second curved portion (M32) extending from one end of the second straight portion (M2), a convex third curved portion (M41) connecting the first straight portion (M1) and the fourth straight portion (M4), and a fourth curved portion (M42) extending from the other end of the second straight portion (M2).
- the first curved portion (M31) and the third curved portion (M41) may be disposed on the adhesive member (138).
- the second curved portion (M32) and the fourth curved portion (M42) may be disposed on the circuit board (110).
- the first curved portion (M31) is arranged on the outer side of the second side (S2) of the light source portion (130), and the third curved portion (M41) is arranged on the outer side of the third side (S3) of the light source portion (130).
- the first straight portion (M1) has a length greater than or equal to the length (D5) in the first direction (X) of the light source portion (130) and can seal the outer side of the first and second bonding pads (134, 135). That is, the first straight portion (M1) can come into contact with an area between the light-emitting element (131) of the light source portion (130) and the first and second bonding pads (134, 135).
- the above first straight line portion (M1) can be in contact with the upper surface of the resin member (132) positioned between the upper surface of the light-emitting element (131) and the upper surfaces of the first and second bonding pads (134, 135).
- the second straight portion (M2) may be arranged in the first direction (X) on the outer side of the first and second pads (111, 112) longer than the length of both ends of the first and second pads (111, 112).
- the second straight portion (M2) may be in contact with the upper surface of a protective layer (110B, FIG. 12) arranged on the outer side of the first and second pads (111, 112).
- first extension portion (M33) extending from the other end of the third straight portion (M3) through the recess (108) and a second extension portion (M43) extending from the other end of the fourth straight portion (M4) through the recess (108) are included, and the first and second extension portions (M33, M43) may extend inward in a diagonal or curved shape from the other ends of the third and fourth straight portions (M3, M4). Part of the first and second extension portions (M33, M43) may be arranged within the recess (108).
- a first sub-straight portion (M3a) in the form of a straight line is arranged between the second curved portion (M32) and the first extension portion (M33), and a second sub-straight portion (M4a) in the form of a straight line is arranged between the fourth curved portion (M42) and the second extension portion (M43).
- a distance (K2) in the first direction (X) between the first and second sub-straight portions (M3a, M4a) may be equal to or less than a distance (K1) in the first direction (X) between the third and fourth straight portions (M3, M4).
- the side surfaces that the molding portion (171) comes into contact with are the first to third side surfaces (S1, S2, S3), and the side that the molding portion (171) does not come into contact with is the fourth side surface (S4).
- the first and fourth side surfaces (S1, S4) are opposite sides in the second direction (Y), and the second and third side surfaces (S2, S3) are opposite sides in the first direction (X).
- the molding portion (171) can cover the first end (41), the second end (43), and the middle wire portion (42) of the connecting member (141, 142). As shown in (a) of FIG. 12 and FIG. 13, the first portion (M11) of the molding portion (171) covers the surfaces of the first and second bonding pads (134, 135) on the light source portion (130) and the first end (41) of the connecting member (141, 142).
- the first portion (M11) can be arranged in the inner region of the first straight portion (M1) and can have a predetermined thickness (T1).
- the thickness (T1) of the first portion (M11) is a thickness in a vertical direction on the upper surfaces of the first and second bonding pads (134, 135), and may be greater than the thickness of the first end (41) of the connecting member (141, 142) in a vertical direction on the upper surfaces of the first and second bonding pads (134, 135), and may be more than 1 time the thickness of the first end (41), for example, 1.1 to 4 times or 2 to 3 times.
- the thickness (T1) of the first portion (M11) may be 0.35 mm or less, for example, 0.27 to 0.35 mm.
- the gap (Z2) between the upper surface of the first end (41) and the upper surface of the first portion (M11) may be 0.1 mm or more, for example, in the range of 0.1 mm to 0.3 mm. If the gap (Z2) between the upper surface of the first end (41) and the upper surface of the first portion (M11) is smaller than the above range, there is a possibility that the surface of the first end (41) may be exposed and may be vulnerable to external impact. If the gap (Z2) between the upper surface of the first end (41) and the upper surface of the first portion (M11) is larger than the above range, the light distribution emitted from the light emitting element (131), for example, the light beam angle (Q1) having a Lambertian distribution, may be affected. The beam angle (Q1) may be 80 degrees or more, for example, in the range of 80 degrees to 150 degrees or 110 degrees to 130 degrees.
- the second part (M21) of the molding part (171) is placed on the circuit board (110) and covers the surfaces of the first and second pads (111, 112) and the second end (43) of the connecting member (141, 142).
- the second part (M21) may be placed in the inner region of the second straight part (M2) and may have a predetermined thickness (T2).
- the thickness (T2) of the second portion (M21) is a thickness in a vertical direction from the upper surfaces of the first and second pads (111, 112), and may be greater than the thickness of the second end (43) of the connecting member (141, 142) in a vertical direction from the upper surfaces of the first and second pads (111, 112), and may be more than 1 time, for example, 1.1 to 4 times, or 2 to 3 times, of the thickness of the second end (43).
- the thickness (T2) of the second portion (M21) may be 0.35 mm or less, for example, 0.27 to 0.35 mm.
- the thickness (T2) of the second portion (M21) may be the same as or thicker than the thickness (T1) of the first portion (M11).
- the gap (Z3) between the upper surface of the second end (43) and the upper surface of the second portion (M21) may be 0.1 mm or more, for example, in the range of 0.1 mm to 0.3 mm. If the gap (Z3) between the upper surface of the second end (43) and the upper surface of the second portion (M21) is smaller than the above range, there is a possibility that the surface of the second end (43) may be exposed and may be vulnerable to external impact.
- the third portion (M30) of the molding portion (171) is arranged in an area between the light source portion (130) and the circuit board (110) and can cover the middle wire portion (42) of the connecting member (141, 142).
- the third portion (M30) can be in contact with the first side surface (S1) of the light source portion (130), the surface of the adhesive member (138), the upper surface of the support plate (101), one side surface of the circuit board (110), and the surface of the middle wire portion (42) of the connecting member (141, 142).
- the thickness of the third portion (M30) can be thicker than the thicknesses (T1, T2) of the first and second portions (M11, M21).
- the uppermost point of the third section (M30) may be higher than the highest point (Pz1) of the connecting member (141, 142).
- the uppermost point of the third section (M30) may be the same as the highest point (Pz2) of the molding section (171).
- the highest point (Pz1) of the connecting member (141, 142) may be positioned lower than the highest point (Pz2) of the molding portion (171).
- the highest point (Pz2) of the molding portion (171) may have a predetermined distance (Z1) from the highest point (Pz1) of the connecting member (141, 142).
- the distance (Z1) may be 0.1 mm or more, for example, in the range of 0.1 mm to 0.3 mm, and is a thickness capable of protecting the surface of the connecting member (141, 142).
- the height (H3) of the highest point (Pz2) of the molding portion (171) may be 1 mm or less, for example, in the range of 0.5 mm to 1 mm or in the range of 0.5 mm to 0.8 mm, with respect to the upper surface of the circuit board (110) or the upper surface of the light source portion (130).
- the distance (B1) between the first and second ends (41, 43) of the connecting member (141, 142) may be greater than the distance in the second direction (Y) between the light source unit (130) and the circuit board (110).
- the distance (B1) between the first and second ends (41, 43) of the connecting member (141, 142) may be the minimum distance between the first and second ends (41, 43).
- the distance (B1) between the first and second ends (41, 43) of the connecting member (141, 142) may be at least twice as large as the height of the highest point (Pz1) of the connecting member (141, 142) from the upper surface of the circuit board (110), for example, may be in the range of 2 to 10 times or 3 to 7 times.
- the distance (B0) between the outer ends of the first and second ends (41, 43) of each of the above connecting members (141, 142) may be smaller than the distance in the second direction (Y) between the first and second straight parts (M1, M2) of the molding part (171) in the first direction.
- the distance (B1) between the first and second ends (41, 43) of the connecting member (141, 142) may be 2.5 mm or more, for example, in the range of 2.5 mm to 4 mm or 2.5 mm to 3.5 mm. If the distance (B1) between the first and second ends (41, 43) of the connecting member (141, 142) is greater than the above range, the length of the connecting member (141, 142) becomes longer and the connecting member (141, 142) sags toward the support plate (101), and if it is less than the above range, the bonding process using bonding equipment becomes difficult.
- a straight line passing through the highest point (Pz1) of the connecting member (141, 142) and perpendicular to the upper surface of the supporting plate (101) may pass through a central position between the light source unit (130) and the circuit board (110), or may pass through a central position between the first and second ends (41, 43).
- a distance (B11) between a straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the first end (41) may be equal to a distance (B12) between a straight line perpendicular to the highest point (Pz1) and the second end (43).
- the distance (B11, B12) may be half the distance (B1) between the first and second ends (41, 43) of the connecting member (141, 142).
- the positions of the highest point (Pz1) of the connecting member (141, 142) and the highest point (Pz2) of the molding part (171) may be arranged at positions spaced apart from each other equally between the circuit board (110) and the light source unit (130) in the area between the circuit board (110) and the light source unit (130).
- a straight line passing through the highest point (Pz1) of the connecting member (141, 142) and perpendicular to the upper surface of the supporting plate (101) is positioned closer to the light source unit (130) than the center position between the light source unit (130) and the circuit board (110).
- the distance (B13) between the straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the first end (41) may be smaller than the distance (B14) between the straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the second end (43).
- a straight line passing through the highest point (Pz1) of the connecting member (141, 142) and perpendicular to the upper surface of the supporting plate (101) is positioned closer to the circuit board (110) than the center position between the light source unit (130) and the circuit board (110).
- the distance (B15) between the straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the first end (41) may be greater than the distance (B16) between the straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the second end (43).
- the highest point (Pz1) of the connecting member (141, 142) and the highest point (Pz2) of the molding part (171) may be positioned closer to the circuit board (110) than to the light source part (130) in the area between the circuit board (110) and the light source part (130).
- the distance (B17) between the straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the first end (41) may be equal to the distance (B18) between the straight line passing through the highest point (Pz1) and perpendicular to the upper surface of the supporting plate (101) and the second end (43).
- the highest point (Pz1) of the connecting member (141, 142) may be at a position such as that in FIG. 14 or FIG. 15.
- the distance (Z0) between the highest point (Pz1) of the connecting member (141, 142) and the upper surface of the molding portion (171) may be 0.01 mm or more, for example, in the range of 0.01 mm to 0.4 mm.
- the height (H4) of the highest point (Pz1) of the connecting member (141, 142) may be 0.8 mm or less, for example, in the range of 0.4 mm to 0.8 mm or 0.4 mm to 0.7 mm, based on the upper surface of the circuit board (110).
- a horizontal length (B21) in the second direction (Y) of an area in contact with the middle wire portion (42) of the connecting member (141, 142) and the upper surface of the molding portion (171) may be smaller than the distance between the light source portion (130) and the circuit board (110).
- FIG. 17 is a modified example of FIG. 16, in which a portion of the middle wire portion (42) of each of the connecting members (141, 142) may protrude higher than the upper surface of the molding member (171).
- the high point (Pz1) of each of the connecting members (141, 142) may protrude higher than the upper surface of the molding member (171).
- the middle wire portion (42) of each of the connecting members (141, 142) may include an upper portion (42B) having the high point (Pz1), and an inclined portion (42A) extending from the upper portion (42B) through the upper surface of the molding member (171) and contacting the upper surface of the molding member (171).
- the support plate (101) is provided without a receiving portion, and the circuit board (110) can be fixed on the upper surface of the support plate (101).
- the positions of the highest point (Pz2) of the molding portion (171) and the highest point (Pz1) of each of the connecting members (141, 142) can be arranged on the area between the light source portion (130) and the circuit board (110).
- the light guide module (500) includes a transparent plate (510) and a light guide unit (520).
- the transparent plate (510) can be made of a transparent plastic material, and the light guide unit (520) can protrude on the transparent plate (510) and be made of a transparent plastic material.
- the transparent plastic material can include PC or PMMA.
- the transparent plate (510) and the light guide unit (520) can be made of the same material.
- the transparent plate (510) and the light guide unit (520) can be formed integrally of a transparent material.
- the lower surface or upper surface of the transparent plate (510) may be arranged parallel to the upper surface of the support plate (101).
- the transparent plate (510) may be spaced apart from the upper surface of the support plate (101) by a predetermined distance, and may be located at a height higher than, for example, the uppermost end of the fixing member (120) of FIG. 1, for example, 2.5 mm or more, for example, in the range of 2.5 mm to 7 mm.
- the light guide part (520) is provided in a columnar shape and may include, for example, a circular column or a polygonal column shape.
- the light guide part (520) may have a shape with a narrow lower area and a wide upper area according to the directional distribution of the light source part (130).
- the directional angle of the light source part (130) may be 70 degrees or more, for example, in a range of 70 degrees to 150 degrees.
- the light guide part (520) may overlap with the light source part (130) in a vertical direction.
- the light guide part (520) causes the point light of the light source part (130) to be emitted as surface light.
- the light guide part (520) may have a lower surface area or/and an upper surface area that is larger than the upper surface area of the light source part (130).
- the above light guide part (520) may have a diameter or width greater than the length of one side of the light source part (130) (D5 of FIG. 4b), for example, 1.5 times or more the length of one side of the light source part (130), and preferably, 5 mm or more, for example, in the range of 5 mm to 10 mm. If the diameter or width of the light guide part (520) is smaller than the above range, the amount of incident light may be reduced, and if it is larger than the above range, the light intensity or light intensity distribution may be degraded.
- the transparent plate (510) includes a first support protrusion (531) and a second support protrusion (535) at the bottom, and the first support protrusion (531) may be arranged on both sides of the outer lower portion of the transparent plate (510), and the second support protrusion (535) may be arranged on both sides of the inner lower portion.
- the inner portion may be in the direction of the circuit board (110) arranged at the center of the support plate (101).
- the transparent plate (510) may be coupled to the support plate (101) by a fastening means through the first support protrusion (531) and the second support protrusion (535).
- a coupling portion (535A) coupled to the first and second support protrusions (531, 535) may be arranged on the upper surface of the transparent plate (510), or a washer or a nut may be coupled.
- This light guide module (500) can extract light, for example, white light, emitted through the light source unit (130) of the lighting device (1000) to the outside.
- the light guide unit (520) is arranged in a direction in which the highest light intensity is emitted from the light source unit (130), and since the light is incident, it can be emitted to the outside without light loss.
- the lighting device of Fig. 20 can include the lighting device disclosed in the first and second embodiments.
- a vehicle headlamp (90) having a lighting device includes a light source module (93) and a housing (92), and the light source module (93) is disposed inside the housing (92) to irradiate light, and the irradiated light can be reflected in an emission direction through an inner surface (92A) of the housing (92).
- the housing (92) has a cavity (95) inside, and the cavity (95) is an area in which an emission direction or one side is open, and the light source module (93) can be coupled inside.
- the light source module (93) can include the lighting device disclosed above.
- the shape of the cavity (95) can be a hemispherical shape, a semi-elliptical shape, a circular shape, or an elliptical shape when viewed from the emission direction or the opening direction.
- the housing (92) can include a metal or a non-metallic material, and the non-metallic material can include a plastic material.
- the housing (92) may be a reflector of a head lamp.
- the inner surface (92A) of the housing (92) or the inner surface (92A) of the cavity (95) may be a surface coated with a highly reflective material, or may include a reflective layer having an anti-reflection (AR) material.
- the highly reflective material may include at least one of metals, such as Al, Ag, and Au
- the anti-reflection 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. Since the cavity (95) is provided with a reflective material around its periphery, it can function as a reflective cup.
- 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 irradiated from the light source module (93) may be adjusted.
- the light source module (93) selectively irradiates light of a high beam distribution pattern and a low beam distribution pattern, and 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 inner surface (92A) of the housing (92) is spaced laterally from the light source module (93), and light emitted from the light source module (93) 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 exterior of the housing (92) may include various features and accessories for mounting or connecting the headlamp (90) to the interior of the vehicle, and may have an electrical interface, such as a socket, for connecting power and/or signals.
- the housing (92) and cavity (95) described above are examples and may be changed into various shapes.
- the housing (92) according to an embodiment may function as a reflector for the left/right headlamps (90).
- the lower end of the reflector (95A) may be placed on the upper end (102) of the support plate (101).
- the lower end of the reflector (95A) may be placed in an area adjacent to the light source unit (130) placed on the support plate (101).
- the lower end of the reflector (95A) may be provided in a form that surrounds at least three sides and the upper surface of the light source unit (130).
- the area between the upper end of the reflector (95A) and the upper surface of the support plate (101) may be an area where light is emitted.
- the interior of the reflector (95A), that is, the area between the reflector (95A) and the upper end of the support plate (101), may be an open area, which may be an area where light is mixed.
- the vertical distance between the upper end of the reflector (95A) and the upper surface of the support plate (101) may be greater than the distance between the upper surface of the light source unit (130) and the point where an imaginary straight line perpendicular to the upper surface of the light source unit (130) intersects the reflector (95A). Accordingly, the reflector (95A) may emit light emitted from the light source unit (130) in a lateral direction.
- the lateral direction is a direction away from the straight line perpendicular to the light source unit (130) and is a direction in which light reflected by the reflector (95A) and light emitted from the light source unit (130) are emitted.
- the lower end of the reflector (95A) may be disposed on the circuit board (110).
- the lower end of the reflector (95A) may be placed on the circuit board (110) and the upper end (102) of the support plate (101).
- the direction of light emission may vary, and for example, the direction of light emission between the support plate (101) and the reflector (95A) may be at least one direction among the directions orthogonal to an imaginary straight line perpendicular to the light source (130).
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
Description
Claims (12)
- 지지 플레이트;일측에 복수의 패드를 갖고 상기 지지 플레이트 상에 배치된 회로기판;상기 지지 플레이트 상에 배치되며, 일측에 발광소자 및 타측에 복수의 본딩 패드를 갖는 광원부;상기 복수의 패드를 상기 복수의 본딩 패드에 각각 연결하는 복수의 연결부재; 및상기 복수의 연결부재를 덮는 몰딩부를 포함하며,상기 몰딩부는 상기 광원부와 상기 회로 기판 사이의 영역, 상기 광원부의 복수의 본딩 패드, 및 상기 회로 기판의 패드를 덮고,상기 몰딩부의 최 고점의 위치는 상기 광원부와 상기 회로 기판 사이의 영역 상에 배치되는, 조명 장치.
- 제1 항에 있어서,상기 복수의 연결부재 각각의 최 고점의 위치는 상기 광원부와 상기 회로 기판 사이의 영역 상에 배치되는, 조명 장치.
- 제2 항에 있어서,상기 몰딩부와 상기 연결 부재 각각의 최 고점은 상기 광원부와 상기 회로 기판 사이의 영역의 중앙에 수직하게 위치하는, 조명 장치.
- 제2 항에 있어서,상기 몰딩부와 상기 연결 부재 각각의 최 고점은 상기 광원부와 상기 회로 기판 사이의 영역의 중앙 보다 상기 광원부 측에 위치하는, 조명 장치.
- 제2 항에 있어서,상기 몰딩부와 상기 연결 부재 각각의 최 고점은 상기 광원부와 상기 회로 기판 사이의 영역의 중앙 보다 상기 회로 기판 측에 위치하는, 조명 장치.
- 제1 항 내지 제5 항 중 어느 한 항에 있어서,상기 연결 부재 각각은 상기 광원부의 본딩 패드들 각각에 연결된 제1 단부, 상기 회로 기판의 패드들 각각에 연결된 제2 단부, 및 상기 제1,2 단부를 연결해 주는 중간 와이어부를 포함하며,상기 몰딩부는 상기 제1 단부의 표면 및 상기 광원부의 본딩 패드들 각각의 상면을 덮는 제1 부, 및 상기 제2 단부의 표면 및 상기 회로 기판의 패드들 각각의 상면을 덮는 제2부를 포함하는, 조명 장치.
- 제6 항에 있어서,상기 제1 단부의 상면과 상기 몰딩부의 제1부의 상면 사이의 간격은 0.1mm 내지 0.3mm 범위이며,상기 제2 단부의 상면과 상기 몰딩부의 제2부의 상면 사이의 간격은 0.1mm 내지 0.3mm 범위인 조명 장치.
- 제6 항에 있어서,상기 연결 부재 각각의 중간 와이어부의 최 고점과 상기 몰딩부의 최 고점 위치 사이의 간격은 0.1mm 내지 0.3mm 범위인 조명 장치.
- 제6 항에 있어서,상기 지지 플레이트는 상기 회로 기판이 수납되도록 오목한 수납부를 포함하는, 조명 장치.
- 제6항에 있어서,상기 회로 기판의 상면과 상기 광원부의 상면은 같은 직선 상에 배치되는, 조명 장치.
- 제6 항에 있어서,상기 복수의 연결부재 각각은 폭이 두께보다 2배 초과인 리본 와이어인, 조명 장치.
- 백색 광을 발광하는 조명 장치; 및상기 조명 장치 상에 광 가이드 모듈 또는 리플렉터를 포함하며,상기 조명 장치는 청구항 제6 항에 따른 조명 장치인 램프.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24832527.6A EP4737789A1 (en) | 2023-06-29 | 2024-06-28 | Lighting device and lamp |
| CN202480044127.5A CN121443886A (zh) | 2023-06-29 | 2024-06-28 | 照明装置和灯 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0084540 | 2023-06-29 | ||
| KR20230084540 | 2023-06-29 | ||
| KR1020240085208A KR20250001948A (ko) | 2023-06-29 | 2024-06-28 | 조명장치 및 램프 |
| KR10-2024-0085208 | 2024-06-28 |
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| WO2025005751A1 true WO2025005751A1 (ko) | 2025-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/KR2024/009149 Ceased WO2025005751A1 (ko) | 2023-06-29 | 2024-06-28 | 조명장치 및 램프 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101028243B1 (ko) * | 2010-04-01 | 2011-04-11 | 엘지이노텍 주식회사 | 발광 모듈 |
| KR101606819B1 (ko) * | 2014-12-22 | 2016-04-11 | 주식회사 루멘스 | 발광 소자 패키지와, 백라이트 유닛 및 발광 소자 패키지의 제조 방법 |
| JP2019046714A (ja) * | 2017-09-05 | 2019-03-22 | 株式会社小糸製作所 | 灯具ユニット及び車両用灯具 |
| KR20210152792A (ko) * | 2020-06-09 | 2021-12-16 | 엘지이노텍 주식회사 | 조명모듈 및 이를 구비한 조명장치 |
| JP7273297B2 (ja) * | 2019-06-28 | 2023-05-15 | 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 |
-
2024
- 2024-06-28 WO PCT/KR2024/009149 patent/WO2025005751A1/ko not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101028243B1 (ko) * | 2010-04-01 | 2011-04-11 | 엘지이노텍 주식회사 | 발광 모듈 |
| KR101606819B1 (ko) * | 2014-12-22 | 2016-04-11 | 주식회사 루멘스 | 발광 소자 패키지와, 백라이트 유닛 및 발광 소자 패키지의 제조 방법 |
| JP2019046714A (ja) * | 2017-09-05 | 2019-03-22 | 株式会社小糸製作所 | 灯具ユニット及び車両用灯具 |
| JP7273297B2 (ja) * | 2019-06-28 | 2023-05-15 | 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 |
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