LED lamp filament with good stability

Abstract

The utility model discloses an LED lamp filament with good stability, which belongs to the field of LED lamp filaments, and has the following beneficial effects: two wrapping plates connected through a wrapping connecting plate are arranged at the joints of pins and a circuit board, and I-shaped reinforcing grooves are formed in the sides, far away from the circuit board, of the wrapping plates, so that the pins can be wrapped and attached to the circuit board; the staggered connecting plates at the joints of the pin main body and the wrapping plates are combined, so that the pins are easier to position and assemble, the stability after assembly is increased and the deflection is prevented, meanwhile, the two wrapping plates adopt long and short structures, and the long wrapping plates can be fixed with the pin main body through the wrapping sheets after being wrapped on the circuit board, so that the wrapping stability is ensured, and the service life of the circuit board is prolonged. The pin main body is provided with the reinforcing groove, so that the pin can be better attached to the circuit board after being assembled, and the pin main body is also provided with the reinforcing groove, so that the situations that the pin is easy to bend and break can be better reduced.

Description

Technical Field

[0001] The utility model belongs to the field of LED filaments, and particularly relates to an LED filament with good stability. Background Art

[0002] LED filaments are also called LED lamp posts. In the past, in order for LED light sources to achieve a certain illuminance and illumination area, optical devices such as lenses had to be installed, which affected the lighting effect and reduced the energy-saving effect of LEDs. LED filaments can emit light at all angles of 360 degrees, and can emit light at large angles without the need for lenses, thereby realizing a three-dimensional light source with good lighting effects. However, when the prior art is used, the pins of the filaments and the circuit board are mostly assembled by pressing and fitting. However, since the connecting piece between the pin and the circuit board is only a simple flat metal piece, the connecting piece is easily unable to fit completely with the circuit board during fitting due to the rebound force at the bend or the unevenness of the metal piece itself, and is prone to warping, resulting in poor contact of the pins and poor stability in use. At the same time, the wiring part of the pins is also easily broken during use, causing inconvenience. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In order to overcome the shortcomings of the prior art, an LED filament with good stability is proposed to solve the problem that in the prior art, the pins of the filament and the circuit board are mostly assembled by pressing and fitting. However, since the connecting piece between the pin and the circuit board is only a simple flat metal sheet, the connecting piece is prone to be unable to be completely fitted with the circuit board due to the rebound force at the bend or the unevenness of the metal sheet itself, and it is easy to warp up, resulting in poor contact effect of the pin and poor stability in use. At the same time, the wiring part of the pin is also easy to break during use, causing inconvenience.

[0005] (II) Technical solution

[0006] The utility model is implemented by the following technical scheme: The utility model proposes an LED filament with good stability, the structure of which includes packaging glue, a first pin, a second pin and a circuit board, the first pin and the second pin are fixed at both ends of the circuit board, and the circuit board and the connection between the first pin, the second pin and the circuit board are wrapped by packaging glue;

[0007] The first pin is composed of a pin body, a positioning hole, a first reinforcement groove, a first wrapping sheet, a first wrapping plate, a second reinforcement groove, a second wrapping sheet, a wrapping connecting plate, a second wrapping plate and a staggered connecting plate, the pin body is connected to the second wrapping plate through the staggered connecting plate on the side adjacent to the circuit board, the staggered connecting plate is pressed against the end of the circuit board provided with the first pin, the second wrapping plate is attached to the side of the panel of the circuit board provided with the first pin, the pin body is arranged parallel to the circuit board, the pin body is penetrated by a positioning hole on the side away from the circuit board, the middle part of one end face of the pin body is recessed with a first reinforcement groove, the second wrapping plate is recessed with a second reinforcement groove on the side away from the circuit board, the second reinforcement groove is I-shaped, the second wrapping plate is fixed with the first wrapping plate on the side away from the second pin through the wrapping connecting plate, the first wrapping plate is also recessed with a second reinforcement groove on the side away from the circuit board, the first wrapping plate is adjacent to the pin body longer than the second wrapping plate adjacent to the pin body, and the first and second wrapping sheets are respectively connected to the two side ends of the first wrapping plate adjacent to the pin body.

[0008] Furthermore, the pin body, the first wrapping sheet, the first wrapping plate, the second wrapping sheet, the wrapping connecting plate, the second wrapping plate and the staggered connecting plate are manufactured by adopting an integrated structure.

[0009] Furthermore, the distance between the first wrapping plate and the second wrapping plate is equal to the thickness of the side end surface of the circuit board.

[0010] Furthermore, the width of the first wrapping sheet from the first wrapping plate is greater than the thickness of the lead body.

[0011] Furthermore, the distance between the pin body and the second wrapping plate attached to the same surface of the circuit board side is less than or equal to the thickness of the circuit board.

[0012] Furthermore, the side end of the circuit board is provided with a first pin and a wrapping groove (41) may also be provided, and the wrapping groove (41) is clearance-matched with the wrapping connecting plate.

[0013] Furthermore, the second pin and the first pin are in a mirror image structure.

[0014] Furthermore, two end surfaces of the circuit board connected to the first wrapping plate and the second wrapping plate are provided with power supply circuits for the lamp beads.

[0015] (III) Beneficial effects

[0016] One of the above technical solutions has the following advantages or beneficial effects:

[0017] In order to solve the problem that the pins of the filaments and the circuit board are mostly assembled by pressing and fitting in the prior art, but since the connecting sheet between the pins and the circuit board is only a simple flat metal sheet, the connecting sheet is prone to be unable to be completely fitted with the circuit board due to the rebound force at the bend or the unevenness of the metal sheet itself, and is prone to warping, resulting in poor contact effect of the pins and poor stability in use. At the same time, the wiring part of the pins is also prone to breakage during use, causing inconvenience. By setting the connection between the pins and the circuit board as two wrapping plates connected by a wrapping connecting plate, the wrapping plate is provided with an I-shaped reinforcement groove on the side away from the circuit board, so that the pins can be wrapped and fitted on the circuit board, and the warping and other situations can be reduced. Combined with the misaligned connecting plate at the connection between the pin body and the wrapping plate, the pins are easier to position and assemble and increase stability after assembly to prevent skewing. At the same time, the two wrapping plates adopt a long-short structure. After being wrapped on the circuit board, the long wrapping plate can be fixed to the pin body through the wrapping sheet to ensure the stability of the wrapping, so that the pins can be better fitted on the circuit board after assembly. The pin body is also provided with a reinforcement groove, which can better reduce the situation of easy bending and breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 This is a schematic diagram of the structure of an LED filament with good stability according to the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the front view of the utility model after removing the packaging glue;

[0021] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0022] Figure 4 This is a schematic diagram of the structure of the first pin of the utility model after the formal diagram is expanded;

[0023] Figure 5 It is a structural schematic diagram of the rear view of the first pin of the utility model after expansion;

[0024] Figure 6 This is a structural schematic diagram of the left side of the first pin of the utility model after expansion;

[0025] Figure 7 It is a structural schematic diagram of the right side of the first pin of the utility model after expansion;

[0026] Figure 8 It is a structural schematic diagram of a front view of a circuit board with a wrapping groove according to the utility model after removing the packaging glue;

[0027] Fig. 9 For this utility model Figure 8 A schematic diagram of the enlarged structure of B;

[0028] In the figure: packaging glue-1, first pin-2, second pin-3, circuit board-4, pin body-a, positioning hole-b, first reinforcement groove-c, first wrapping sheet-d, first wrapping board-e, second reinforcement groove-f, second wrapping sheet-g, wrapping connecting board-h, second wrapping board-i, offset connecting board-j, wrapping groove-41. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0030] The utility model provides an LED filament with good stability: its structure includes a packaging glue 1, a first pin 2, a second pin 3 and a circuit board 4, the first pin 2 and the second pin 3 are fixed at both ends of the circuit board 4, and the circuit board 4 and the connection between the first pin 2, the second pin 3 and the circuit board are wrapped by the packaging glue 1;

[0031] The first pin 2 is composed of a pin body a, a positioning hole b, a first reinforcement groove c, a first wrapping piece d, a first wrapping plate e, a second reinforcement groove f, a second wrapping piece g, a wrapping connecting plate h, a second wrapping plate i and a staggered connecting plate j. The pin body a is connected to the second wrapping plate i on the side adjacent to the circuit board 4 through the staggered connecting plate j. The staggered connecting plate j is pressed against the end of the circuit board 4 provided with the first pin 2. The second wrapping plate i is attached to the panel side of the circuit board 4 provided with the first pin 2. The pin body a is arranged parallel to the circuit board 4. The pin body a is penetrated by a positioning hole b, a first reinforcement groove c, a first wrapping piece d, a first wrapping plate e, a second reinforcement groove f, a second wrapping piece g, a wrapping connecting plate h, a second wrapping plate i and a staggered connecting plate j. The pin body a has a first reinforcing groove c formed in the middle of one end surface, the second wrapping plate i has a second reinforcing groove f formed in the shape of an I-beam, the second wrapping plate i has a first wrapping plate e fixed to it on the side away from the second pin 3 through a wrapping connecting plate h, the first wrapping plate e has a second reinforcing groove f formed in the side away from the circuit board 4, the first wrapping plate e is adjacent to the pin body a longer than the second wrapping plate i on the side adjacent to the pin body a, and the first wrapping plate e on both side ends adjacent to the pin body a are respectively connected with a first wrapping piece d and a second wrapping piece g.

[0032] Among them, the pin body a, the first wrapping piece d, the first wrapping plate e, the second wrapping piece g, the wrapping connecting plate h, the second wrapping plate i and the staggered connecting plate j are made of an integrated structure.

[0033] The distance between the wrapping connecting plate h and the first wrapping plate e and the second wrapping plate i is equal to the thickness of the side end surface of the circuit board 4 .

[0034] The width of the first wrapping sheet d from the first wrapping plate e is greater than the thickness of the lead body a.

[0035] The distance between the pin body a and the second wrapping plate i attached to the same surface of the circuit board 4 is less than or equal to the thickness of the circuit board 4 .

[0036] Among them, the side end of the circuit board 4 is provided with a first pin 2 and a wrapping groove 41 may also be provided on the side, and the wrapping groove 41 is clearance-matched with the wrapping connecting plate h.

[0037] The second pin 3 and the first pin 2 are in a mirror image structure.

[0038] Among them, the two end surfaces of the circuit board 4 connected to the first wrapping board e and the second wrapping board i are both provided with power supply circuits for the lamp beads.

[0039] Implementation plan 1: When the pins of the circuit board 4 are assembled, the second wrapping plate i of the pins can be aligned with the pin assembly position of the circuit board 4 for bonding. During bonding, the offset connecting plate j is pressed against the end of the circuit board 4 to ensure the accuracy of the position, and then the side of the wrapping connecting plate h connected to the second wrapping plate i is aligned with the side of the quasi-circuit board 4, and then the connection with the wrapping connecting plate h is bent to make the first wrapping plate e bonded to the side of the circuit board 4 away from the second wrapping plate i. Therefore, the offset connecting plate j and the first wrapping plate e are longer than the second wrapping plate i. At this time, the part of the first wrapping plate e that grows out of the second wrapping plate i will be bonded to the pin body a, and then the first wrapping plate is bent. The first wrapping piece d and the second wrapping piece g of e can make the first wrapping plate e stably wrap the pin body a, which can strengthen the prevention of the first wrapping plate e or the second wrapping plate i that is attached to the circuit board 4 from bending and curling up at the bonding point of the circuit board 4. The first wrapping plate e and the second wrapping plate i are also provided with an I-shaped second reinforcing groove f on the side away from the circuit board 4, so that the first wrapping plate e and the second wrapping plate i can ensure that they are in overall contact with the side of the circuit board 4 while better preventing edge curling, thereby ensuring the stability of the connection between the circuit board 4 and the pin. At the same time, the pin body a is also provided with a first reinforcing groove c, which can better reduce the bending and breaking of the pin body a.

[0040] Implementation Plan 2: Figure 8 and Fig. 9 As shown, in the case of an inconvenient pin structure, the circuit board 4 can be provided with a wrapping groove 41 according to the position of the wrapping connecting plate h, so as to further enhance the assembly stability of the pins of the circuit board 4.

[0041] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0042] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An LED filament with good stability, the structure of which comprises a packaging glue (1), a first pin (2), a second pin (3) and a circuit board (4), the first pin (2) and the second pin (3) being fixed at both ends of the circuit board (4), and the circuit board (4) and the connection between the first pin (2), the second pin (3) and the circuit board are wrapped by the packaging glue (1); Features: The first pin (2) is composed of a pin body (a), a positioning hole (b), a first reinforcement groove (c), a first wrapping sheet (d), a first wrapping plate (e), a second reinforcement groove (f), a second wrapping sheet (g), a wrapping connecting plate (h), a second wrapping plate (i) and a staggered connecting plate (j); the pin body (a) is connected to the second wrapping plate (i) on the side adjacent to the circuit board (4) through the staggered connecting plate (j); the staggered connecting plate (j) is pressed against the end of the circuit board (4) provided with the first pin (2); the second wrapping plate (i) is attached to the side of the panel of the circuit board (4) provided with the first pin (2); the pin body (a) is arranged parallel to the circuit board (4); the pin body (a) is extended away from the circuit board (4) and penetrates A positioning hole (b) is provided, a first reinforcing groove (c) is recessed in the middle of one end surface of the pin body (a), a second reinforcing groove (f) is recessed on the side of the second wrapping plate (i) away from the circuit board (4), the second reinforcing groove (f) is I-shaped, the side of the second wrapping plate (i) away from the second pin (3) is fixed with a first wrapping plate (e) through a wrapping connecting plate (h), the side of the first wrapping plate (e) away from the circuit board (4) is also recessed with a second reinforcing groove (f), the first wrapping plate (e) adjacent to the pin body (a) is longer than the side of the second wrapping plate (i) adjacent to the pin body (a), and the two side ends of the first wrapping plate (e) adjacent to the pin body (a) are respectively connected to a first wrapping sheet (d) and a second wrapping sheet (g).

2. The LED filament with good stability according to claim 1, characterized in that: The pin body (a), the first wrapping sheet (d), the first wrapping plate (e), the second wrapping sheet (g), the wrapping connecting plate (h), the second wrapping plate (i) and the offset connecting plate (j) are manufactured by using an integrated structure.

3. The LED filament with good stability according to claim 1, characterized in that: The distance between the wrapping connecting plate (h) and the first wrapping plate (e) and the second wrapping plate (i) is equal to the thickness of the side end surface of the circuit board (4).

4. The LED filament with good stability according to claim 1, characterized in that: The width of the first wrapping sheet (d) from the first wrapping plate (e) is greater than the thickness of the lead body (a).

5. The LED filament with good stability according to claim 1, characterized in that: The distance between the pin body (a) and the second wrapping plate (i) attached to the same surface of the circuit board (4) is less than or equal to the thickness of the circuit board (4).

6. The LED filament with good stability according to claim 1, characterized in that: The side end of the circuit board (4) is provided with a first pin (2) and may also be provided with a wrapping groove (41), and the wrapping groove (41) is clearance-matched with the wrapping connecting plate (h).

7. The LED filament with good stability according to claim 1, characterized in that: The second pin (3) and the first pin (2) are in a mirror image structure.

8. The LED filament with good stability according to claim 1, characterized in that: Both end surfaces of the circuit board (4) connected to the first wrapping board (e) and the second wrapping board (i) are provided with power supply circuits for the lamp beads.

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