CN212005206U

CN212005206U - Anti-breakage LED bulb core column

Info

Publication number: CN212005206U
Application number: CN202020328848.8U
Authority: CN
Inventors: 张迪; 张晓杰; 许琦锋
Original assignee: Zhejiang kaiyao Lighting Co Ltd
Current assignee: ZheJiang Klite Lighting Holdings Co Ltd; Zhejiang kaiyao Lighting Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-11-24
Anticipated expiration: 2030-03-16

Abstract

The utility model belongs to the technical field of the bulb technique and specifically relates to an anti disconnected LED bulb stem is related to, stem body top and pressure head an organic whole are connected, the part that the stem body is greater than two-thirds is hollow blast pipe, stem body bottom is the tubaeform drum that matches with the bulb shell, stem body side is equipped with a plurality ofly the supporting wire, the supporting wire includes bottom supporting wire and top supporting wire, the bottom supporting wire is located stem body side and is close to the position of bottom, the top supporting wire is located the side of pressure head, the side of the hollow blast pipe part of stem body be equipped with radial exhaust hole, radial exhaust hole transversely runs through hollow blast pipe part. The pressure head is in a circular truncated cone shape, the upper bottom surface of the circular truncated cone is provided with an axial exhaust hole, and the axial exhaust hole is communicated with the hollow exhaust pipe. The utility model has the advantages of strong anti-breaking capability and the like.

Description

Anti-breakage LED bulb core column

Technical Field

The utility model belongs to the technical field of the illumination and specifically relates to a strong anti-broken LED wick post of bending resistance of anti-broken ability.

Background

The existing high-power bulb has larger power, and the development trend is towards an intelligent lamp and a high lumen LED filament lamp. The high lumen full lamps have a large bulb shape, are heavy and are often dropped during transportation. The large-power bulb on the market is too heavy, and the main reason is that the stem part of the bulb is too large in mass and too small in cross section, so that the stem bears larger gravity in the falling process, the stem is easy to break, and the product is scrapped passively without being used.

For example, a "a lamp area stem for LED bulb" that announces on chinese patent literature, its bulletin number is CN206130593U, the utility model discloses a lamp area stem for LED bulb, the body is closed for one end, the other end has the drum with the cell-shell opening seals the horn mouth that matches, there is the trachea even as an organic whole with the blind end in the drum, the body blind end has the venthole with the trachea intercommunication, a solid support column is stretched out to its center, it is fixed with four supporting wires to surround solid support column, the utility model discloses replace traditional incandescent lamp filament with a plurality of LED lamp areas, make the luminous efficacy of bulb improve. Although a section of air pipe is used at the bottom end of the utility model, the main function of the air pipe is used for pumping air, the weight of the core column is not purposefully reduced, and the length of the air pipe is larger, so that the weight of the core column is not effectively reduced. In addition, this utility model is used for the support column of fixed stay wire to be solid cylinder, has further increased the quality of stem, and the fracture resistance is very low.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the problem that anti-fracture performance of prior art's wick and bending resistance are low, provide an anti-fracture LED wick post, can avoid the disconnection of wick post in the transportation, strengthened the anti-fracture performance and the bending resistance of wick post, reduce the amount of deflection, have the advantage of the high stable in structure of anti-fracture performance, technology easily realizes and is with low costs simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-breaking LED bulb core column comprises a core column body, a supporting lead and an LED light bar, the top end of the core column body is integrally connected with the pressure head, the part of the core column body which is more than two thirds is a hollow exhaust pipe, the bottom end of the stem body is a horn-shaped cylinder matched with the bulb shell, a plurality of supporting wires are arranged on the side surface of the stem body, the supporting lead comprises a bottom supporting lead and a top supporting lead, the bottom supporting lead is positioned at the position of the side surface of the core column close to the bottom end, the top end supporting wires are positioned on the side surface of the pressure head, the number of the top end supporting wires is the same as that of the bottom end supporting wires, the LED lamp strip is arranged between each bottom end supporting wire and each top end supporting wire, the LED lamp strip is connected with the bottom end supporting wire and the top end supporting wire in an inherent electric connection mode of a common LED lamp strip, and the bottom end supporting wire is electrically connected with a direct-current power supply input end. Firstly, the design of hollow blast pipe has been adopted to the stem body for the quality greatly reduced of stem, when falling, because the gravity that receives is littleer, consequently, ground is littleer to its reaction force, has reduced damaged probability. Secondly, because the stem body is subjected to the action force of the lamp strip on the stem body, especially when the stem body falls on the ground to form vibration, the pulling force of the lamp strip on the stem is also increased, the bending resistance of the stem is also important, and the bending resistance section coefficient W of the unit area is used as a parameter for evaluating the bending resistance of an object_zFor a cylinder with a circular cross section, the bending resistance coefficient per unit area is

Greater than the circular cross-section

Where D is the outside diameter of the circular cross-section and D is the inside diameter of the circular cross-section, assuming that the outside diameter of the circular cross-section is equal to the diameter of the circular cross-section. It can be seen that the greater the bending resistance of the circular cross-section and the greater the breaking resistance when falling to the groundIs strong. In conclusion, the stem body adopts the design of the hollow exhaust pipe, so that the fracture resistance of the stem is stronger, and the probability of scrapping in the transportation process is reduced.

Preferably, the side surface of the hollow exhaust pipe part of the stem body is provided with a radial exhaust hole, and the radial exhaust hole penetrates through the hollow exhaust pipe part. During the production process of the core column, a process of pressing a head is required, and the process needs to be carried out in a high-temperature environment. The existence of radial exhaust hole for the in-process of pressure head, the air temperature is unanimous outside the hollow vent pipe exhaust pipe, eliminates because the inside and outside inhomogeneous annealing stress that produces of temperature, prevents stem body fracture.

Preferably, the pressure head is in a circular truncated cone shape, an axial exhaust hole is formed in the upper bottom surface of the circular truncated cone, and the axial exhaust hole is communicated with the hollow exhaust pipe. The scheme is used as a substitute scheme of the radial exhaust hole, and the aim of preventing the core column body from cracking can be achieved.

Preferably, the LED light bar is electrically connected to the top end support wire and the bottom end support wire at positions of the horizontal section near the stem body. The maximum flexibility values of the lamp strip electrically connected to different positions of the supporting wire are compared, and for convenience, two special positions are taken as examples, and the position A of the supporting wire far away from the end point of the stem column body and the position B of the middle point of the horizontal section of the supporting wire are respectively selected. It can be found that the maximum deflection value at A

Greater than maximum deflection value at B

Where L is the total length of the horizontal section of the support wire, E is the modulus of elasticity of the support wire, and F is the force experienced. Therefore, the deflection of the lamp strip at the position, close to the core column, of the horizontal part section of the supporting lead is small, and the fracture resistance of the supporting lead is also enhanced.

Preferably, the cross section of the top end support wire and the cross section of the bottom end support wire are rectangular. For comparison, it is assumed that the rectangle is a square with the same length and width, and the area of the rectangle is equal to that of the circle. When the cross section is square, the bending-resistant section coefficients of the top supporting wire and the bottom supporting wire per unit area

Bending section coefficient greater than unit area of circular cross section

Where d is the diameter of the circle and S is the area of the circle, the rectangular cross-section is more resistant to bending than the circular cross-section.

Preferably, a section of solid body is arranged between the hollow exhaust pipe part of the core column body and the trumpet-shaped cylinder at the bottom end. This solid has divided into two parts with the stem, and that part of keeping away from hollow blast pipe is equipped with the drive circuit part, and the thermal transmission of drive circuit has been completely cut off in the existence of this solid, reduces the influence to hollow blast pipe, and simultaneously, the existence of solid, the focus of the whole bulb of messenger move to the one side of keeping away from the lamp strip, falls the in-process, makes the one side of keeping away from the lamp strip earlier contact ground more easily, reduces the probability of lamp strip damage.

Preferably, the bottom end supporting wire penetrates through the solid body to be electrically connected with a direct current power supply. The solid body enables the bottom end to support the wires to be isolated from each other, and avoids short circuit caused by mutual contact after the skin of the wires is broken and distorted.

Therefore, the utility model discloses following beneficial effect has: (1) due to the existence of the hollow exhaust pipe in the core column, the bending-resistant section coefficient of the core column in unit area is increased, the flexibility of the core column body is reduced, and the anti-fracture capability of the core column is enhanced; (2) because the cross section of the supporting lead is rectangular, the bending-resistant section coefficient of the supporting lead per unit area is increased, and the bending resistance of the supporting lead is enhanced. (3) Because the position of the lamp strip is selected at the position of the supporting wire close to the core column body, the flexibility of the supporting wire is reduced, and the fracture resistance is enhanced.

Drawings

Fig. 1 is a schematic structural diagram of the side opening of the present invention.

Figure 2 is the structure sketch map of the utility model discloses pressure head top trompil.

Fig. 3 is a sectional view of the present invention with a hole opened on the side.

Fig. 4 is a sectional view of the head of the present invention when the top is opened.

In the figure: 1. stem body 2, solid 3, LED lamp strip 4, pressure head 5, hollow blast pipe 6, tubaeform drum 7, bottom support wire 8, top support wire 9, radial exhaust hole 10, axial exhaust hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Example 1:

as shown in fig. 1, 3 and 4, a fracture-resistant LED bulb stem comprises a stem body 1, support wires and an LED light bar 3, wherein the top end of the stem body 1 is integrally connected with a pressure head 4, two thirds of the stem body 1 is a hollow exhaust pipe 5, the bottom end of the stem body 1 is a horn-shaped cylinder 6 matched with a bulb shell, a plurality of support wires are arranged on the side surface of the stem body 1, each support wire comprises a bottom support wire 7 and a top support wire 8, the bottom support wire 7 is located on the side surface of the stem close to the bottom end, the top support wire 8 is located on the side surface of the pressure head 4, the number of the top support wires 8 is the same as that of the bottom support wires 7, the LED light bar 3 is arranged between each bottom support wire 7 and the top support wire 8, the LED light bar 3 is connected with the bottom support wires 7 and the top support wires 8 in an inherent electrical, the bottom end supporting lead 7 is electrically connected with the input end of the direct current power supply. Firstly, the design of the hollow exhaust pipe 5 is adopted for the core column body 1, so that the quality of the core column is greatly reduced, and when the core column falls, the reaction force of the ground to the core column is smaller due to smaller gravity, and the probability of damage is reduced. Secondly, because the stem body 1 is to bear the acting force of the lamp strip on the stem body, especially when the stem body falls to the ground to form vibration, the pulling force of the lamp strip on the stem is also increased, the bending resistance of the stem is also important, and the bending resistance section coefficient W of the unit area is used as a parameter for evaluating the bending resistance of an object_zFor a cylinder with a circular cross section, the bending resistance coefficient per unit area is

Greater than the circular cross-section

Where D is the outside diameter of the circular cross-section and D is the inside diameter of the circular cross-section, assuming that the outside diameter of the circular cross-section is equal to the diameter of the circular cross-section. It can be seen that the circular cross-section has a greater resistance to bending and to breaking when falling to the ground. In conclusion, the design of the hollow exhaust pipe 5 is adopted for the core column body 1, so that the breaking resistance of the core column is stronger, and the probability of scrapping in the transportation process is reduced. A section of solid body 2 is arranged between the hollow exhaust pipe 5 part of the core column body 1 and the bottom end horn-shaped cylinder 6. This solid body 2 has divided into two parts with the stem, that part of keeping away from hollow blast pipe 5 is equipped with the drive circuit part, the existence of this solid body 2, the thermal transmission of drive circuit has completely cut off, reduce the influence to hollow blast pipe 5, and simultaneously, the existence of solid body 2, the focus of the whole bulb of messenger moves to the one side of keeping away from the lamp strip, falling the in-process, make the one side of keeping away from the lamp strip earlier contact with ground more easily, reduce 3 electricity of probability LED lamp strip of lamp strip damage and be connected top supporting

wire

8 and 7 horizontal segment of bottom supporting wire are close to the position department of stem body 1. The maximum flexibility values of the lamp strip electrically connected to different positions of the supporting wire are compared, and for convenience, two special positions are taken as examples, and the position A of the supporting wire far away from the core column body 1 and the position B of the middle point of the horizontal section of the supporting wire are respectively selected. It can be found that the maximum deflection value at A

Greater than maximum deflection value at B

Top end support wire 8The cross section of the bottom supporting wire 7 is rectangular. For convenience of comparison, it is assumed here that the rectangle is a square with the same length and width, and the area of the rectangle is equal to that of the circle. When the cross section is square, the bending resistance section coefficients of the top end support wire 8 and the bottom end support wire 7 per unit area

Bending section coefficient greater than unit area of circular cross section

Where d is the diameter of the circle and S is the area of the circle, the rectangular cross-section is more resistant to bending than the circular cross-section. The bottom end supporting lead 7 penetrates through the solid body 2 to be electrically connected with a direct current power supply. The solid body 2 isolates the bottom end supporting wires 7 from each other, and avoids short circuit caused by mutual contact after the skin of the wires is broken and distorted.

The side of the hollow exhaust pipe 5 part of the core column body 1 is provided with a radial exhaust hole 9, and the radial exhaust hole 9 penetrates through the hollow exhaust pipe 5 part. During the production process of the core column, a process of pressing the head 4 is required, and the process needs to be carried out in a high-temperature environment. The existence of radial exhaust hole 9 for pressure head 4's in-process, hollow blast pipe 5 blast pipe inside and outside air temperature is unanimous, eliminates because the inside and outside inhomogeneous annealing stress that produces of temperature, prevents stem body 1 fracture. On 5 pipe walls of hollow blast pipe, through the heating of fire head high temperature earlier, with a piece of high temperature resistant syringe needle, puncture 5 pipe walls of hollow blast pipe, form an exhaust hole, later press from both sides and get conical pressure head 4 and press it at 5 tops of hollow blast pipe again, form the pressure head 4 of round platform shape, fuse into an organic whole with stem body 1.

Example 2:

as shown in fig. 2, other technical features are the same as those of embodiment 1, except that the radial vent hole 9 of embodiment 1 is eliminated, and an axial vent hole 10 is provided at the top end of the pressure head 4, and the axial vent hole 10 is communicated with the hollow vent pipe 5. During the concrete operation, let pressure head 4 position be in high temperature molten state, adorn a high temperature resistant syringe needle in the conical pressure head 4 upright, when pressure head 4 operation, axial exhaust hole 10 has also been accomplished, also forms the pressure head 4 of round platform shape at last, fuses with stem body 1 as an organic whole. The scheme is used as an alternative scheme of the radial vent hole 9, and the aim of preventing the stem body 1 from cracking can also be achieved.

It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Claims

1. An anti-breaking LED bulb core column comprises a core column body (1), supporting wires and an LED lamp strip (3), and is characterized in that the top end of the core column body (1) is integrally connected with a pressure head (4), the part of the core column body (1) which is larger than two thirds is a hollow exhaust pipe (5), the bottom end of the core column body (1) is a horn-shaped cylinder (6) matched with a bulb shell, a plurality of supporting wires are arranged on the side surface of the core column body (1), each supporting wire comprises a bottom supporting wire (7) and a top supporting wire (8), the bottom supporting wires (7) are positioned at the position close to the bottom end on the side surface of each core column body (1), the top supporting wires (8) are positioned at the side surface of the pressure head (4), the number of the top supporting wires (8) is the same as that of the bottom supporting wires (7), and the LED lamp strip (3) is arranged between each bottom supporting wire (7) and each top supporting wire, the LED lamp strip (3) is connected with the bottom end supporting wire (7) and the top end supporting wire (8) in an inherent electric connection mode of a common LED lamp strip, and the bottom end supporting wire (7) is electrically connected with a direct-current power supply input end.

2. The breakage-resistant LED bulb core column according to claim 1, wherein a radial exhaust hole (9) is formed in the side surface of the hollow exhaust pipe (5) part of the core column body (1), and the radial exhaust hole (9) transversely penetrates through the hollow exhaust pipe (5) part.

3. The breakage-resistant LED bulb core column according to claim 1, wherein the pressure head (4) is in a circular truncated cone shape, an axial exhaust hole (10) is formed in the upper bottom surface of the circular truncated cone, and the axial exhaust hole (10) is communicated with the hollow exhaust pipe (5).

4. The breakage-resistant LED bulb stem as claimed in claim 1, wherein the LED light bar (3) is electrically connected to the horizontal sections of the top end support wires (8) and the bottom end support wires (7) near the stem body (1).

5. The breakage resistant LED light bulb stem as claimed in claim 1, wherein the top end support wires (8) and the bottom end support wires (7) are rectangular in cross section.

6. The breakage-resistant LED bulb core column as claimed in claim 1 or 2, wherein a section of solid body (2) is arranged between the hollow exhaust pipe (5) part of the core column body (1) and the bottom end trumpet-shaped cylinder (6).

7. The breakage-resistant LED bulb stem as claimed in claim 4, wherein the bottom end support wire (7) is electrically connected with a DC power supply through the solid body (2).