CN205542891U

CN205542891U - LED lead frame with waterproof function

Info

Publication number: CN205542891U
Application number: CN201521063583.9U
Authority: CN
Inventors: 黄平; 廖达新; 张全; 饶家平
Original assignee: Shenzhen Wanxingrui Technology Co Ltd
Current assignee: Shenzhen Wanxingrui Technology Co Ltd
Priority date: 2015-12-17
Filing date: 2015-12-17
Publication date: 2016-08-31
Anticipated expiration: 2025-12-17

Abstract

The utility model discloses a LED lead frame with waterproof function, including forming at least one the lead frame unit on the lead frame sheet material, each lead frame unit includes the pin, and the pin includes first pin group and second pin group, and first pin group sets up with the front end of second pin including at least one microscler second pin, the front end of first pin including at least one microscler first pin, second pin group in opposite directions, the front end of first pin group and the protruding cup structure of front end constitution of second pin group, protruding cup structure is protruding towards the positive direction of LED lead frame sheet material, and the internal surface and/or the surface of the lateral wall of protruding glass of structure are equipped with capillary groove, capillary groove nonparallel in the length direction of pin. Implement the technical scheme of the utility model, the capillary groove of LED lead frame has improved LED's waterproof performance, furtherly, and LED lamp body and packaging structure can be more firmly attached to on the LED lead frames.

Description

There is the LED lead frame of water-proof function

Technical field

This utility model relates to IC-components field, especially relates to a kind of LED with water-proof function Lead frame.

Background technology

Lead frame, as the chip carrier of integrated circuit, is a kind of by means of bonding material (spun gold, aluminum Silk, copper wire) realize the electrical connection of chip internal circuits exit and outer lead, formation electric loop Structural member, it serves the function served as bridge connected with outer lead.LED lead frame is then to realize LED Pearl internal circuit exit and the electrical connection of outer lead.

For having the LED lead frame of convex cup structure, convex cup structure is the region of encapsulation LED illuminator.

But the water resistance of LED is poor, the packaged lead-in wire in LED stretches out outside encapsulating structure, if LED Being accidentally to meet water, water then may enter in encapsulating structure along lead-in wire, affects the performance of LED

It addition, on LED lamp and encapsulating structure lead frame to be rigidly attached to.But the surface of lead frame It is typically flat smooth, is unfavorable for attachment.

Utility model content

Water resistance for drawbacks described above LED of the prior art is poor, and utility model of the present invention is wanted Solve the technical problem that and be how to improve the water resistance of LED.

This utility model solves its technical problem and be the technical scheme is that structure one has waterproof merit The LED lead frame of energy, including at least one the lead frame unit being formed on lead frame plate, Each lead frame unit includes that pin, pin include the first pin set and the second pin set, the first pin Group includes that at least one the first elongated pin, the second pin set include at least one the second elongated pin, The front end of the first pin is oppositely arranged with the front end of the second pin；The front end of the first pin set and the second pin The front end of group forms convex cup structure, and convex cup structure is protruding towards the frontal of LED lead frame plate, convex The inner surface of the sidewall of cup structure and/or outer surface are provided with capillary groove, and capillary groove is not parallel to the length of pin Direction.

Preferably, convex cup structure is located at the middle part of lead frame unit；The forward part of the first pin set is to just Face bending is raised, constitute a part for convex cup, and the forward part of the second pin set bends raised, structure to front Become another part of convex cup.

Preferably, the first pin set includes two the first pins, and the second pin set includes two the second pins.

Preferably, capillary groove is perpendicular to the length direction in pin.

Further, for drawbacks described above LED lamp of the prior art and encapsulating structure at lead frame Attachment on frame is firm not, and the technical problems to be solved in the utility model is, how to make LED lamp It is more firmly attached on lead frame with encapsulating structure.

This utility model solve this technical problem be the technical scheme is that above-mentioned provided have anti- The LED lead frame of water function also has following characteristics.

Preferably, the edge of the forward part of pin is step-like.

Preferably, the ascent direction of the step of forward part is by the front of pin rearwardly.

Preferably, the rear section of the first pin is parallel to each other, and the rear section of the second pin is parallel to each other.

Preferably, the second pin includes A pin and B pin, and the front end of A pin is provided with prolongs to width The extension stretched, and extending part is in the front of B pin.

Preferably, pin is provided with first and admittedly expects hole, the first edge at the bottom of material hole is located at glass admittedly.

Preferably, pin is provided with second and admittedly expects hole, and first expects that hole is located on the sidewall of convex cup structure admittedly.

Implement the technical solution of the utility model, at least there is following beneficial effect: LED lead frame Capillary groove improves the water resistance of LED, and further, LED lamp and encapsulating structure can be the most attached In LED lead frame.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:

Fig. 1 is the LED lead frame with water-proof function in a preferred implementation of the present utility model The schematic top plan view of one lead frame unit.

Fig. 2 is that the right side of the lead frame unit in Fig. 1 regards schematic diagram.

Fig. 3 is the cross-sectional schematic of the A-A position in Fig. 1.

Fig. 4 is the close-up schematic view at the A ' position in Fig. 3.

Fig. 5 is the LED lead frame with water-proof function in another preferred implementation of the present utility model The schematic top plan view of a lead frame unit.

Fig. 6 is that the right side of the lead frame unit in Fig. 5 regards schematic diagram.

Fig. 7 is the cross-sectional schematic of the C-C position in Fig. 5.

Fig. 8 is the close-up schematic view at the C ' position in Fig. 7.

Fig. 9 is the LED lead frame with water-proof function in a preferred implementation of the present utility model Schematic top plan view.

Wherein, 11. first pin set, 110. first pins, 12. second pin set, 120. second pins, 121.A pin, 122.B pin, 123. extensions, 2. capillary groove, 31. first expect hole admittedly, 32. second Admittedly expect hole.

Detailed description of the invention

In order to technical characteristic of the present utility model, purpose and effect are more clearly understood from, existing comparison Accompanying drawing describes detailed description of the invention of the present utility model in detail.In LED lead frame of the present utility model In description, it is to be understood that "front", "rear", " on ", the term such as D score be for only for ease of description This utility model rather than the device of instruction indication or element must have specific orientation, therefore can not It is interpreted as restriction of the present utility model.

Such as Fig. 1-4, shown in 9, the one in a preferred implementation of the present utility model has waterproof merit The LED lead frame of energy, including at least one the lead frame unit being formed on lead frame plate, Each lead frame unit includes that pin, pin include the first pin set 11 and the second pin set 12, first Pin set 11 includes that at least one the first elongated pin 110, the second pin set 12 include that at least one is long Second pin 120 of shape, the first pin 110 is oppositely arranged with the second pin 120；First pin set 11 The forward part of forward part and the second pin set 12 form convex cup structure, convex cup structure is towards LED lead frame The frontal of plate is protruding, and the inner surface of the sidewall of convex cup structure and/or outer surface are provided with capillary groove 2, Capillary groove 2 is not parallel to the length direction of pin.Wherein, Fig. 1,2 show the LED shown in Fig. 7 and draw A lead frame unit in wire frame.

Specifically, convex cup structure is located at the middle part of lead frame unit；The forward part of the first pin set 11 to Front bending is raised, constitute the part of convex cup, the forward part of the second pin set 12 is raised to front bending, Constitute another part of convex cup.Can be rectangle at the bottom of the cup of convex cup structure, but be not limited to rectangle, it is possible to Think circle, ellipse or rhombus etc..

The rear section of the first pin 110 is parallel to each other, and the rear section of the second pin 120 is parallel to each other.Its In, the forward direction of the first pin set 11 namely the forward direction of the first pin 110, the second pin set 12 Forward direction namely the forward direction of the second pin 120.Specifically, the forward part of the first pin set 11 Raised, to constitute a convex cup structure part, the second pin set is bent to the frontal of lead frame plate The forward part of 12 bends raised, to constitute convex cup structure another part to the frontal of lead frame plate, Thus constitute complete convex cup structure.

In the present embodiment, the quantity of pin is four, and the first pin set 11 includes two the first pins 110, Second pin set 12 includes two the second pins 120.But understandably, the quantity of pin is not limited to Four, it is also possible to be three, six or eight etc., if the quantity of pin is three, then the first pin Group 11 can include first pin 110, and the second pin set 12 can include two each and every one the second pins 120。

Second pin 120 includes A pin 121 and B pin 122, and the front end of A pin 121 is provided with to width Spend the extension 123 that direction extends, and extension 123 is positioned at the front of B pin 122.

Preferably, capillary groove 2 is perpendicular to the length direction in pin.Specifically, each pin all sets There is capillary groove 2.When packaged LED meets water accidentally, capillary groove 2 is used for hindering water to penetrate into along pin In encapsulating structure.

As viewed in figures 5-8, further, above-mentioned the provided LED lead frame with water-proof function Also there is feature.

The edge of the forward part of pin is step-like.

Preferably, the ascent direction of the step of forward part is by the front of pin rearwardly, and this step For two-stage step.Wherein, the front of pin is the one side arranging LED lamp of LED lead frame. When encapsulating LED, encapsulating material fits on stepped edge, and step-like edge contributes to encapsulation knot Structure is combined more firm with LED lead frame.

Yet further, along be provided with at the bottom of the cup of convex cup structure first admittedly material hole 31.First expects hole 31 admittedly Quantity is not limited fixed, as long as the cup feather edge along convex cup structure is arranged, such as its quantity can be Four, four first admittedly on the material rectangular distribution in hole 31 four corners at the bottom of being respectively provided at glass.First Admittedly the shape in material hole 31 is also not limited, can be circular, ellipse, rectangle or irregularly shaped etc.. When encapsulating LED illuminator, encapsulating material can be filled into first and admittedly expect in hole 31, enhances encapsulating material Adhesive force on the lead frames, draws so that LED lamp and encapsulating structure are more firmly attached to LED On wire frame.

Preferably, the sidewall of convex cup structure be provided with second admittedly material hole 32.Second expects the quantity in hole 32 also admittedly It is not limited, can be to be respectively equipped with one on each the first pin 110 and each second pin 120 Second expects hole 32 admittedly.Second expects that the shape in hole 32 is also not limited admittedly, can be oval, circular, square Shape or irregularly shaped etc..When encapsulating LED illuminator, encapsulating material can be filled into second and admittedly expect hole In 32, enhance encapsulating material adhesive force on the lead frames, so that LED lamp and encapsulating structure It is more firmly attached in LED lead frame.

In sum, the capillary groove of the LED lead frame with water-proof function provided by the utility model Improve the water resistance of LED, further, its step-like edge and admittedly expect structure LED in hole Lamp body and encapsulating structure can be more firmly attached in LED lead frame.

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, For a person skilled in the art, this utility model can have various change, combines and change.All Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all Within right of the present utility model should be included in.

Claims

1. a LED lead frame with water-proof function, including at least one the lead frame unit being formed on lead frame plate, each described lead frame unit includes pin, described pin includes the first pin set (11) and the second pin set (12), it is characterized in that, described first pin set (11) includes at least one elongated the first pin (110), described second pin set (12) includes that at least one elongated the second pin (120), described first pin (110) are oppositely arranged with described second pin (120)；

The forward part of the first pin set (11) forms convex cup structure with the forward part of the second pin set (12), described convex cup structure is protruding towards the frontal of described LED lead frame plate, the inner surface of the sidewall of described convex cup structure and/or outer surface are provided with capillary groove (2), and described capillary groove (2) is not parallel to the length direction of described pin.

The LED lead frame with water-proof function the most according to claim 1, it is characterised in that described convex cup structure is located at the middle part of described lead frame unit；The forward part of described first pin set (11) is raised to front bending, constitute a part for described convex cup, and the forward part of described second pin set (12) is raised to front bending, constitute another part of described convex cup.

The LED lead frame with water-proof function the most according to claim 1, it is characterized in that, described first pin set (11) includes that two the first pins (110), described second pin (120) group include two the second pins (120).

The LED lead frame with water-proof function the most according to claim 1, it is characterised in that described capillary groove (2) is perpendicular to the length direction of described pin.

The LED lead frame with water-proof function the most according to claim 1, it is characterised in that the edge of the forward part of described pin is step-like.

The LED lead frame with water-proof function the most according to claim 5, it is characterised in that the ascent direction of the described step of described forward part be the front by described pin rearwardly.

The LED lead frame with water-proof function the most according to claim 1, it is characterised in that the rear section of described first pin (110) is parallel to each other, the rear section of described second pin (120) is parallel to each other.

The LED lead frame with water-proof function the most according to claim 1, it is characterized in that, described second pin (120) includes A pin (121) and B pin (122), the front end of described A pin (121) is provided with the extension (123) extended to width, and described extension (123) is positioned at the front of described B pin (122).

The LED lead frame with water-proof function the most according to claim 1, it is characterised in that the cup feather edge along described convex cup structure is provided with first and admittedly expects hole (31).

The LED lead frame with water-proof function the most according to claim 1, it is characterised in that the sidewall of described convex cup structure is provided with second and admittedly expects hole (32).