Thermoelectric separation COB light source module

Abstract

The utility model discloses a thermoelectric separation COB light source module which comprises an insulating substrate, a heat dissipation piece, a plurality of conductive pieces, a light-emitting assembly and a light-transmitting glue sealing piece, a box dam ring is arranged on the front face of the substrate, the heat dissipation piece is arranged on the back face of the substrate, and the conductive pieces are arranged on the back face of the substrate. The heat dissipation pieces are arranged on the substrate, the projection area of at least part of the heat dissipation pieces relative to the substrate is located in the box dam ring, the conductive pieces are arranged on the substrate and penetrate through the front face and the back face of the substrate, the multiple conductive pieces are arranged around the periphery of the heat dissipation pieces, at least part of the conductive pieces are located in the box dam ring, and the conductive pieces are arranged in the box dam ring. The light-emitting assembly is arranged on the front face of the substrate and located in the box dam ring, the light-emitting assembly is electrically connected with the conductive part, and the sealing part is arranged in the box dam ring and covers the light-emitting assembly; the design realizes a high-power integrated light source, gathers light rays, meets a good heat dissipation effect, and is simple and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of light sources, in particular to a thermal and electrical separation COB light source module. Background Art

[0002] The existing light source module can be arranged using a thermoelectric separation bracket. Usually, the thermoelectric separation bracket is first set on the substrate, and LED wicks are arranged one by one at positions corresponding to the thermoelectric separation bracket on the substrate. Glue is applied on each wick to form a lens, and each wick needs to be connected to the conductive part of the thermoelectric separation bracket through a gold wire. This structure cannot achieve light convergence, and the power of the light-emitting component composed of multiple LED wicks cannot be too large. The production and processing efficiency is low, and the light-emitting effect is poor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a thermal-electric separation COB light source module, which realizes a high-power integrated light source, gathers light, satisfies a good heat dissipation effect, and is simple and convenient to use.

[0004] According to the first aspect of the utility model, a thermoelectric separation COB light source module includes: an insulating substrate, a dam ring is arranged on the front side of the substrate; a heat sink is arranged on the back side of the substrate, and at least part of the heat sink is located within the dam ring relative to the projection area of ​​the substrate; a plurality of conductive members are arranged on the substrate and pass through the front and back sides of the substrate, and the plurality of conductive members are arranged around the periphery of the heat sink, and at least part of the conductive members are located within the dam ring; a light-emitting component is arranged on the front side of the substrate and located within the dam ring, and the light-emitting component is electrically connected to the conductive member; a light-transmitting sealing component, the sealing component is arranged within the dam ring and the sealing component cover is arranged on the light-emitting component.

[0005] A thermoelectric separation COB light source module according to an embodiment of the utility model has at least the following beneficial effects:

[0006] The utility model discloses a thermoelectric separation COB light source module, a heat sink is arranged on the back side of a substrate, at least a part of the heat sink is located within a dam circle relative to a projection area of ​​the substrate, a conductive member is arranged around the outer periphery of the heat sink and at least a part of the conductive member is located within the dam circle, a light-emitting component is arranged within the dam circle, the conductive member runs through the front and back sides of the substrate, a part of the conductive member located on the back side of the substrate can be directly soldered to a circuit board or connected to a power supply through a wire, and is simple and convenient to use, a part of the conductive member located on the front side of the substrate can be connected to the light-emitting component for power supply, the light-emitting component is gathered within the dam circle, and is packaged by a sealing member, so that light can be gathered, and has a good light-emitting effect, and the heat emitted by the light-emitting component can be conducted to the heat sink through the substrate, so as to meet a good heat dissipation effect, and the light-emitting power of the light-emitting component can be improved. The design realizes a high-power integrated light source, gathers light, meets a good heat dissipation effect, and is simple and convenient to use.

[0007] According to some embodiments of the present invention, the heat sink is in the form of a sheet and is attached to the back of the substrate.

[0008] According to some embodiments of the present invention, the conductive element forms a patch portion on the back side of the substrate, and a height of the patch portion protruding from the back side of the substrate is higher than a height of the heat sink protruding from the back side of the substrate.

[0009] According to some embodiments of the present invention, the light-emitting assembly includes a plurality of LED lamp wicks, and the LED lamp wicks are welded on the substrate.

[0010] According to some embodiments of the present invention, the substrate is provided with a plurality of grooves on the outer periphery of the dam circle.

[0011] According to some embodiments of the present invention, the substrate is polygonal, and the groove is arranged between a corner position of the substrate and the dam circle.

[0012] According to some embodiments of the present invention, the groove is triangular.

[0013] According to some embodiments of the utility model, the plurality of conductive parts include a positive conductive disk and a negative conductive disk, and the plurality of LED wicks are sequentially connected in series to form at least a portion of an LED light string, wherein the positive pole of the LED light string is connected to the positive conductive disk, and the negative pole of the LED light string is connected to the negative conductive disk.

[0014] According to some embodiments of the present invention, the rated power of the LED light string is between 3W and 30W.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A top view of one embodiment of the thermal-electric separation COB light source module of the utility model;

[0018] Figure 2 This is a schematic diagram of the substrate structure of one embodiment of the thermal and electrical separation COB light source module of the utility model;

[0019] Figure 3 This is a schematic diagram of the back side of a substrate of one embodiment of the thermal-electric separation COB light source module of the utility model;

[0020] Figure 4 This is a schematic diagram of the front side of a substrate of one embodiment of the thermal-electric separation COB light source module of the present invention.

[0021] Reference numerals:

[0022] The substrate 100 , the dam ring 110 , the heat sink 200 , the conductive member 300 , the positive conductive plate 310 , the negative conductive plate 320 , the LED lamp core 400 , and the groove 500 . DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1-Figure 4 As shown, according to an embodiment of the first aspect of the utility model, a thermoelectric separation COB light source module includes an insulating substrate 100, a heat sink 200, a plurality of conductive members 300, a light-emitting component and a translucent sealing member, wherein a dam ring 110 is arranged on the front side of the substrate 100, the heat sink 200 is arranged on the back side of the substrate 100, and at least a portion of the projection area of ​​the heat sink 200 relative to the substrate 100 is located within the dam ring 110, the conductive member 300 is arranged on the substrate 100 and passes through the front and back sides of the substrate 100, a plurality of conductive members 300 are arranged around the periphery of the heat sink 200, and at least a portion of the conductive members 300 are located within the dam ring 110, the light-emitting component is arranged on the front side of the substrate 100 and is located within the dam ring 110, the light-emitting component is electrically connected to the conductive member 300, the sealing member is arranged within the dam ring 110 and the sealing member cover is arranged on the light-emitting component.

[0028] The substrate 100 may also be an insulating and heat-conductive aluminum substrate 100 , or a ceramic substrate 100 or a substrate 100 made of other materials.

[0029] The heat sink 200 can be made of metal or alloy material with high thermal conductivity. The sealing member can be formed by gluing transparent resin, rubber or other materials into the dam circle 110. The light-emitting component is composed of multiple LED wicks 400. The light emitted by the LED wicks 400 can be refracted and converged by the sealing member. The cooperation between the dam circle 110 and the sealing member enables the light source module to form a COB light source.

[0030] In the utility model, a COB light source module with thermoelectric separation is provided, wherein a heat sink 200 is provided on the back of a substrate 100, and at least a portion of the heat sink 200 relative to a projection area of ​​the substrate 100 is located within a dam circle 110, a conductive member 300 is arranged around the periphery of the heat sink 200 and at least a portion of the conductive member 300 is located within the dam circle 110, a light-emitting component is provided within the dam circle 110, and the conductive member 300 passes through the front and back of the substrate 100, and a portion of the conductive member 300 located on the back of the substrate 100 can be directly soldered to a circuit board or connected to a power supply through a wire, which is simple and convenient to use, and a portion of the conductive member 300 located on the front of the substrate 100 can be connected to the light-emitting component for power supply, the light-emitting component is gathered within the dam circle 110, and is encapsulated by a sealing member, so that light can be gathered, and has a good light-emitting effect, and the heat emitted by the light-emitting component can be conducted to the heat sink 200 through the substrate 100, so as to meet a good heat dissipation effect, and the light-emitting power of the light-emitting component can be improved, and the design realizes a high-power integrated light source, gathers light, meets a good heat dissipation effect, and is simple and convenient to use.

[0031] In some embodiments of the present invention, Figure 3 As shown, the heat sink 200 is in the form of a sheet and is attached to the back of the substrate 100. The heat sink 200 is in the form of a sheet and can be tightly attached to the back of the substrate 100, having a larger area in contact with the external wind flow. At the same time, the substrate 100 is not easy to collide or conflict with other objects, saving space and making the thermoelectric separation COB light source module more widely used.

[0032] In some embodiments of the present invention, the conductive element 300 forms a patch portion on the back side of the substrate 100 , and the height of the patch portion protruding from the back side of the substrate 100 is higher than the height of the heat sink 200 protruding from the back side of the substrate 100 .

[0033] Since the conductive part 300 passes through the front and back sides of the substrate 100, the light-emitting component is connected to the portion of the conductive part 300 located on the front side of the substrate 100, and the portion of the conductive part 300 located on the back side of the substrate 100 forms a patch portion, and the height of the patch portion protruding from the back side of the substrate 100 is higher than the height of the heat sink 200 protruding from the back side of the substrate 100, so that the thermoelectric separation COB light source module can be directly placed on the circuit board, and the patch portion supports the substrate 100, and can be directly installed for patch installation, the production process is simple, and the production efficiency is high.

[0034] In some embodiments of the present invention, Figure 1As shown, the light-emitting component includes a plurality of LED wicks 400, and the LED wicks 400 are welded on the substrate 100. The LED wicks 400 can be surface-mounted LED wicks 400, which can be welded on the substrate 100 through a reflow soldering process. The production process is simple and the production efficiency is high. After the LED wicks 400 are welded on the substrate 100 through the reflow soldering process, a sealing member is formed through a glue dispensing process.

[0035] However, the reflow process requires high temperature treatment. Under high temperature conditions, the substrate 100 expands, resulting in large stress at some locations and prone to extrusion fracture. Specifically, for example, the dam ring 110 is usually circular, and the edge of the substrate 100 and the outer periphery of the dam ring 110 are relatively small. Under high temperature conditions, fractures are prone to occur. In some embodiments of the present invention, such as Figure 2 As shown, the substrate 100 is provided with a plurality of grooves 500 on the periphery of the dam ring 110. When the substrate 100 is expanded or squeezed, the edges of the grooves 500 can produce a certain inward deformation, thereby reducing the stress on the substrate 100 and reducing the risk of fracture by reducing the area of ​​the grooves 500.

[0036] In some embodiments of the present invention, Figure 2 As shown, the substrate 100 is polygonal, the dam circle 110 is generally circular or elliptical, and the groove 500 is arranged between the corner position of the substrate 100 and the dam circle 110. The space at the corner position of the substrate 100 is large, and the groove 500 can be opened. In addition, the area of ​​the substrate 100 here is relatively large, and the substrate 100 is relatively strong and not easy to break. The groove 500 opened here is used to relieve the stress in the middle position of the edge of the substrate 100.

[0037] In some embodiments of the present invention, the groove 500 is triangular in shape, and the triangular structure is relatively stable. Under high temperature conditions, the groove 500 can relieve the stress in the middle of the edge of the substrate 100, and after returning to normal temperature conditions, the deformation can be restored, and the substrate 100 can provide sufficient supporting strength.

[0038] In some embodiments of the present invention, Figure 1 As shown, the plurality of conductive members 300 include a positive conductive disk 310 and a negative conductive disk 320 , and the plurality of LED wicks 400 are sequentially connected in series to form at least a portion of an LED light string, wherein the positive pole of the LED light string is connected to the positive conductive disk 310 , and the negative pole of the LED light string is connected to the negative conductive disk 320 .

[0039] Specifically, there may be a plurality of LED light strings within the dam circle 110, and as Figure 1 , 2As shown, the positive conductive plate 310 and the negative conductive plate 320 can each be multiple, for example, two, and different LED light strings can be connected between the respective positive conductive plates 310 and negative conductive plates 320 .

[0040] In some embodiments of the present invention, the rated power of the LED light string is between 3W-30W.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermoelectric separation COB light source module, characterized in that: include: An insulating substrate, wherein a dam ring is provided on the front side of the substrate; A heat sink is disposed on the back side of the substrate, and at least a portion of the heat sink's projection area relative to the substrate is located within the dam circle; A plurality of conductive members are disposed on the substrate and penetrate the front and back sides of the substrate, the plurality of conductive members are arranged around the periphery of the heat sink, and at least part of the conductive members are located within the dam circle; A light emitting component is arranged on the front side of the substrate and is located within the dam circle, and the light emitting component is electrically connected to the conductive member; A light-transmitting sealing member is arranged in the dam circle and is covered on the light-emitting component.

2. A thermoelectric separation COB light source module according to claim 1, characterized in that: The heat sink is in sheet form and is attached to the back of the substrate.

3. A thermoelectric separation COB light source module according to claim 2, characterized in that: The conductive element forms a patch portion on the back side of the substrate, and the height of the patch portion protruding from the back side of the substrate is higher than the height of the heat sink protruding from the back side of the substrate.

4. The thermoelectric separation COB light source module according to claim 1, characterized in that: The light emitting assembly comprises a plurality of LED lamp cores, and the LED lamp cores are welded on the substrate.

5. The thermal-electric separation COB light source module according to claim 4, characterized in that: The base plate is provided with a plurality of grooves on the outer periphery of the dam circle.

6. The thermoelectric separation COB light source module according to claim 5, characterized in that: The substrate is polygonal, and the groove is arranged between a corner of the substrate and the dam circle.

7. The thermal-electric separation COB light source module according to claim 5, characterized in that: The groove is triangular in shape.

8. The thermal-electric separation COB light source module according to claim 4, characterized in that: The plurality of conductive members include a positive conductive disk and a negative conductive disk. The plurality of LED lamp cores are sequentially connected in series to form at least a portion of an LED light string. The positive pole of the LED light string is connected to the positive conductive disk, and the negative pole of the LED light string is connected to the negative conductive disk.

9. The thermoelectric separation COB light source module according to claim 8, characterized in that: The rated power of the LED light string is between 3W and 30W.

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