Direct insertion type LED with built-in fixing piece

Abstract

The utility model relates to the field of direct insertion type LEDs, in particular to a direct insertion type LED with a built-in fixing piece and a production method. Comprising an LED support, a light-emitting assembly, a fixing piece and a packaging colloid, the LED support comprises a positive electrode pin and a negative electrode pin which are arranged in a spaced and mutually insulated mode, connecting ends are formed at the upper ends of the positive electrode pin and the negative electrode pin, and fixing parts are formed at the upper portions of the positive electrode pin and the negative electrode pin; the fixing parts on the positive electrode pin and the negative electrode pin are connected into a whole through a fixing piece to limit the upper parts of the positive electrode pin and the negative electrode pin to release stress so as to prevent the gold thread from being broken; and the packaging colloid is used for wrapping the light-emitting assembly and the fixing piece into a whole and guiding out light emitted by the light-emitting assembly. The positive electrode pin and the negative electrode pin in the LED are insulated from each other and tightly combined into a whole through the built-in fixing piece, so that the problem that the distance between the positive electrode pin and the negative electrode pin in the LED bracket is changed so as to cause the breakage of a gold thread is effectively prevented, and the service life of a product is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of direct insertion type LED, concretely relates to a direct insertion type LED with built-in fixing part. BACKGROUND

[0002] The internal structure of conventional direct insertion type LED is basically same, all by epoxy resin to fix LED support and protect internal parts in light emitting assembly, the diameter of metal wire in light emitting assembly is about 0.8-1.0 mil (18-25.4 um), the tension of metal wire is about 6-10 g, because the tension intensity is low, when the internal stress exists in the application link of LED product, internal gold wire 23 is easy to break.Because the heat dissipation and sealing property of optical characteristic are considered, high hardness high strength ceramic or plastic package cannot be used, therefore high light transmittance epoxy resin glue package is used.The disadvantage of this kind of epoxy resin is: its glass transition temperature TG point, when the LED is used in the ambient temperature and exceeds the TG temperature (about 135-150 DEG C), the epoxy resin glue will transform from the glass state at normal temperature to the high elasticity rubber state.

[0003] And the application mode of LED product is different, the customer is difficult to completely consider the stress residue of assembly and the temperature resistance limit of LED when using LED product, after the epoxy resin glue transforms from the glass state at normal temperature to the high elasticity rubber state, the epoxy resin glue is difficult to fix LED support, the stress existing in LED support will be released, or because of the use environment, such as when the LED PIN spacing is greater than or less than the PCB plug-in PIN hole spacing, the front leg of LED PIN plug-in is bent, the angle 18 is greater than 90 DEG, after installation, the stress is unbalanced, under high temperature, the stress in the product will cause the spacing of positive lead and negative lead in LED support to change, finally leading to gold wire breakage.

[0004] In view of the above technical problems, the utility model hereby researches and proposes. CONTENT OF UTILITY MODEL

[0005] The utility model wants to solve the technical problem to provide a kind of direct insertion type LED with built-in fixing part, by built-in fixing part, the positive lead and negative lead in LED are formed to be mutually insulated and tightly combined into one, solve the problem that traditional direct insertion LED under high temperature condition, epoxy resin glue is soft, the stress of LED support is released, leading to the spacing of positive lead and negative lead in LED support to change, thereby making gold wire breakage.

[0006] To solve the above technical problems, the utility model proposes a kind of direct insertion type LED with built-in fixing part, including:

[0007] The LED support comprises a positive pole pin and a negative pole pin which are arranged in a spaced and insulated manner.

[0008] The light emitting component comprises a semiconductor wafer arranged on one of the connecting ends, conductive silver glue for fixing the semiconductor wafer on the corresponding connecting end, and a gold wire, one end of which is connected with the semiconductor wafer and the other end of which is connected with the connecting end on which no semiconductor wafer is arranged.

[0009] The upper parts of the positive pole pin and the negative pole pin are formed with fixing parts, and the fixing parts on the positive pole pin and the negative pole pin are connected into an integral whole by the fixing member to limit the upper parts of the positive pole pin and the negative pole pin from releasing stress so as to prevent the gold wire from being broken.

[0010] The encapsulating glue is used for wrapping the light emitting component and the fixing member into an integral whole and guiding the light emitted by the light emitting component.

[0011] The fixing member comprises a middle partition part and connecting parts arranged on the left and right sides of the middle partition part and connected with the middle partition part, the connecting parts wrap the corresponding fixing parts together, and the middle partition part forms a space between the fixing parts of the positive pole pin and the negative pole pin.

[0012] The fixing part is formed with a fixing groove.

[0013] The inner side of the fixing part is provided with a flat surface, and the flat surfaces on the positive pole pin and the negative pole pin are arranged in parallel.

[0014] The inner side of the lower end of the fixing part is provided with a deformation groove.

[0015] The cross section of the fixing member is in a trapezoidal shape with the upper part being wide and the lower part being narrow.

[0016] The fixing member is integrally formed with the positive pole pin and the negative pole pin.

[0017] Compared with the prior art, the LED with the built-in fixing member has the following advantages:

[0018] 1. The utility model discloses a straight insertion type LED of built-in fixing spare, through built-in fixing spare makes LED inside positive pole pin, negative pole pin forms each other insulation and tightly combines into an organic whole, effectively prevents traditional straight insertion LED under high temperature condition, oxygen resin colloid becomes soft, makes the stress of LED support to release, leads to the spacing of positive pole pin and negative pole pin in LED support to change, thereby make the problem of gold wire fracture, effectively improve the service life of product

[0019] 2. The utility model discloses a straight insertion type LED of built-in fixing spare, through the fixed groove that is formed on the fixed part, the fixing spare can be connected more stably, effectively the spacing of positive pole pin and negative pole pin changes and leads to the problem of gold wire fracture in the long-term use of LED.

[0020] 3. The utility model discloses a straight insertion type LED of built-in fixing spare, the fixing spare is integrally formed with the positive pole pin and the negative pole pin, which can make the connection more stable.

DESCRIPTION OF DRAWINGS

[0021] The specific implementation of the utility model will be further described in detail below in combination with the drawings, wherein:

[0022] Figure 1 It is the structure schematic diagram of the utility model.

[0023] Figure 2 It is the structure schematic diagram of the fixed part in the utility model.

[0024] Figure 3 It is the structure schematic diagram of the fixing spare in the utility model.

[0025] Figure 4 It is the structure schematic diagram of gold wire fracture when the spacing of LED PIN is greater than the spacing of PCB plug-in PIN hole.

[0026] Figure 5 It is the structure schematic diagram of gold wire fracture when the spacing of LED PIN is less than the spacing of PCB plug-in PIN hole.

[0027] Figure 6 It is the structure schematic diagram of gold wire fracture when the angle of LED PIN plug-in front pin is greater than 90 DEG when being bent.

[0028] In the drawing: 1, LED support;10, positive pole pin;11, negative pole pin;2, light emitting assembly;20, connecting end;21, semiconductor wafer;22, conductive silver glue;23, gold wire;3, fixing spare;30, middle partition part;31, connecting part;4, encapsulation colloid;5, fixed part;50, fixed groove;51, flat surface;52, deformation groove.

DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below with reference to the drawings.

[0030] As Figures 1-6 shown, the utility model includes a kind of built-in fixing piece's straight insertion type LED, including LED support 1, light emitting component 2, fixing piece 3 and encapsulation colloid 4, LED support 1 includes the anode pin 10 and cathode pin 11 of mutually insulated arrangement of interval, and the upper end of anode pin 10 and cathode pin 11 is formed with connecting end 20, light emitting component 2 includes the semiconductor wafer 21 of being arranged on one connecting end 20 and the conductive silver glue 22 for fixing semiconductor wafer 21 on corresponding connecting end 20, further include gold wire 23, gold wire 23 one end is connected with semiconductor wafer 21, the other end is connected with the connecting end 20 of not being arranged semiconductor wafer 21, fixing piece 3 is insulating material, and the upper portion of anode pin 10 and cathode pin 11 is formed with fixed part 5, and the fixed part 5 on anode pin 10 and cathode pin 11 is connected into a whole by fixing piece 3 to limit the upper portion of anode pin 10 and cathode pin 11 to release stress to prevent gold wire 23 from breaking, encapsulation colloid 4 is used to wrap light emitting component 2 and fixing piece 3 into a whole and export the light of light emitting component 2.

[0031] The internal structure of conventional straight insertion type LED is basically same, is fixed and protects internal parts in light emitting component 2 by encapsulation colloid 4 to LED support 1, the diameter of metal wire in light emitting component 2 is about 0.8-1.0 mil (18-25.4 um), and the tension of metal wire is about 6-10g, so when internal stress exists in the application link of LED product, internal gold wire 23 is easily broken.Because optical properties, heat dissipation and sealing must be considered, so ceramic or plastic encapsulation with high hardness and high strength cannot be used, and therefore high light transmittance epoxy resin glue encapsulation is used.The disadvantages of this kind of epoxy resin are: its glass transition temperature TG point, i.e. when the temperature of LED in use environment exceeds TG temperature (about 135-150 DEG C), epoxy resin colloid will transform from glass state at normal temperature to high-elasticity rubber state, which will cause encapsulation colloid 4 difficult to fix LED support 1.

[0032] And the application mode of LED product is different, and customers are difficult to completely consider stress residue of assembly and temperature resistance limit of LED when using LED product, after epoxy resin colloid transforms from glass state at normal temperature to high-elasticity rubber state, encapsulation colloid 4 is difficult to fix LED support 1, and stress existing in LED support 1 will be released, or because of the use environment, such as when the distance between LED PIN is greater than or less than the distance between PCB plug-in PIN hole (such as Figure 4 Figure 5As shown), when the front pin of the LED PIN is bent, the angle is greater than 90° (e.g.). Figure 6 As shown, after installation, the force will be unbalanced. Under high temperature, the internal stress of the product will cause the spacing between the positive electrode pin 10 and the negative electrode pin 11 in the LED bracket 1 to change, which will eventually lead to the breakage of the gold wire 23.

[0033] In this application, the built-in fixing component 3 makes the positive electrode pin 10 and negative electrode pin 11 inside the LED form an insulated and tightly integrated whole. This prevents the oxygen resin colloid from softening under high temperature conditions in traditional through-hole LEDs, which would release the stress on the LED bracket 1 and cause the spacing between the positive electrode pin 10 and negative electrode pin 11 in the LED bracket 1 to change, thus causing the gold wire 23 to break. Therefore, this utility model can prevent the gold wire 23 from breaking and effectively improve the service life of the product.

[0034] like Figures 1 to 3 As shown, as a further embodiment, the fixing member 3 includes a middle partition 30 and connecting portions 31 located on the left and right sides of the middle partition 30 and connected to the middle partition 30. The connecting portions 31 wrap around the corresponding fixing portions 5 together, and the middle partition 30 creates a gap between the fixing portions 5 of the positive electrode pin 10 and the negative electrode pin 11. In this embodiment, the fixing member 3 is integrally formed with the positive electrode pin 10 and the negative electrode pin 11, which makes the connection more stable. Furthermore, the cross-section of the fixing member 3 is a trapezoid with a wider top and a narrower bottom, which makes the overall structure more compact.

[0035] like Figures 1 to 3 As a further embodiment of this invention, the fixing part 5 is formed with a fixing groove 50. By setting the fixing groove 50, the connection of the fixing member 3 can be made more stable.

[0036] like Figures 1 to 3 As a further embodiment of this invention, the inner side of the fixing part 5 has a flat surface 51, and the flat surfaces 51 on the positive electrode pin 10 and the negative electrode pin 11 are arranged in parallel. By setting the flat surface 51, the positive and negative electrode pins 11 can be kept in a set distance, reducing the distance between them caused by environmental changes.

[0037] like Figures 1 to 3 As a further embodiment of this invention, the fixing part 5 has a deformation groove 52 on the inner side of its lower end. By setting the deformation groove 52, it is possible to prevent the force from being transmitted to the upper part of the positive electrode pin 10 and the negative electrode pin 11 when the force is unbalanced at the lower part of the reduced positive electrode pin 10 and the negative electrode pin 11. At the same time, it is also convenient to insert the entire LED into the mounting position.

[0038] The application further provides a production method of the direct insertion type LED with the built-in fixing member 3, using the direct insertion type LED with the built-in fixing member 3 as described above, the fixing groove 50 is formed on the fixing part 5 of the positive electrode pin 10 and the negative electrode pin 11, and the production method of the direct insertion type LED comprises the following steps:

[0039] S1, the fixing groove 50 is prefabricated on the fixing part 5 of the positive electrode pin 10 and the negative electrode pin 11, and the fixing groove 50 is formed by stamping the positive electrode pin 10 and the negative electrode pin 11, so that the subsequent processing procedure can be reduced.

[0040] S2, the fluid material is formed into the fixing member 3 in the fixing groove 50 of the positive electrode pin 10 and the negative electrode pin 11 by the injection molding or drop glue process. The material of the fixing member 3 is ceramic paste or high-temperature-resistant plastic, and the fluid material is formed on the fixing groove 50 by the injection molding or drop glue process.

[0041] S3, after the fixing member 3 is shaped, the surface of the LED support 1 is electroplated.

[0042] S4, after the electroplating is completed, the light emitting assembly 2 is installed.

[0043] S5, finally, the light emitting assembly 2 and the fixing member 3 are wrapped together by the encapsulating glue 4.

[0044] It should be noted that the electroplating process, the installation of the light emitting assembly 2 and the encapsulating glue 4 process are all prior art, and can be completed according to the traditional LED production process, and thus will not be described here.

[0045] The production method of the direct insertion type LED with the built-in fixing member 3 in the embodiment can prevent the problem that the stress of the LED support 1 is released, the distance between the positive electrode pin 10 and the negative electrode pin 11 in the LED support 1 changes, and the gold wire 23 is broken, by prefabricating the fixing groove 50 on the fixing part 5 when the positive electrode pin 10 and the negative electrode pin 11 are produced, and by setting the fixing member 3 to insulate and tightly combine the positive electrode pin 10 and the negative electrode pin 11 with each other, so that the direct insertion type LED produced by the utility model can prevent the gold wire 23 from being broken, and effectively improves the service life of the product.

Claims

1. A direct type LED with built-in fixing member (3) characterized in that The application relates to an LED support (1) and a light-emitting component (2) and a fixing member (3) and a packaging glue (4). The LED support (1) comprises positive and negative pins (10 and 11) which are arranged in a spaced and mutually insulated manner; the light-emitting component (2) comprises a semiconductor wafer (21) arranged on one of the connecting ends (20) and conductive silver glue (22) for fixing the semiconductor wafer (21) on the corresponding connecting end (20), and gold wires (23) which are connected with the semiconductor wafer (21) at one end and connected with the connecting end (20) without the semiconductor wafer (21) at the other end; the fixing member (3) is made of insulating material, the upper parts of the positive and negative pins (10 and 11) are provided with fixing parts (5), and the fixing parts (5) on the positive and negative pins (10 and 11) are connected into an integrated whole by the fixing member (3) to limit the upper parts of the positive and negative pins (10 and 11) from releasing stress and thus prevent the gold wires (23) from being broken; the packaging glue (4) is used for wrapping the light-emitting component (2) and the fixing member (3) into an integrated whole and guiding the light emitted by the light-emitting component (2) outwards. The fixing member (3) comprises a middle partition part (30) and connecting parts (31) arranged on the left and right sides of the middle partition part (30) and connected with the middle partition part (30), the connecting parts (31) wrap the corresponding fixing parts (5) together, and the middle partition part (30) forms a space between the fixing parts (5) of the positive and negative pins (10 and 11). The fixing part (5) is provided with a fixing groove (50). The inner side of the fixing part (5) is provided with a flat surface (51), and the flat surfaces (51) on the positive and negative pins (10 and 11) are arranged in parallel.

2. A direct type LED with a built-in fixing member (3) according to claim 1, characterized in that The lower end of the fixing part (5) is provided with a deformation groove (52) on the inner side.

3. A direct type LED with a built-in fixing member (3) according to claim 2, characterized in that The cross section of the fixing member (3) is in the shape of a trapezoid with the upper part being wide and the lower part being narrow.

4. A direct type LED with a built-in fixing member (3) according to claim 2, characterized in that The fixing member (3) is integrally formed with the positive and negative pins (10 and 11).

5. The direct type LED with a built-in fixing member (3) according to claim 2, characterized in that ​ 6. A direct type LED with a built-in fixing member (3) according to claim 2, characterized in that ​ 7. A direct type LED with a built-in fixing member (3) according to any one of claims 1 to 6, characterized in that ​

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