TW201821728A - LED light bulb and fabrication method thereof - Google Patents

Abstract

An LED light bulb and a fabrication method thereof are provided. A plurality of power wires for supplying electricity to an LED filament are fixed to form a power wire supporting structure for supporting and fixing the LED filament in position, without using a stem of a conventional LED light bulb, thereby simplifying fabrication processes of the LED light bulb and reducing fabrication costs thereof. Moreover, the LED light bulb does not require an internal space for accommodating the stem, and thus its length can be effectively reduced to ideally become a small-size light bulb.

Description

LED bulb and manufacturing method thereof

The present invention relates to the field of illumination, and more particularly to an LED bulb and a method of making same.

According to the LED bulb, it has the advantages of long life, high energy saving, environmental protection and fast response speed, so it gradually replaces the existing incandescent bulbs and other lighting bulbs.

Regarding the manufacturing process of the current LED bulb, as shown in FIG. 1, first, in step S21, the stem 21, the LED filament 22 and the two guide wires 23 as shown in FIG. 2-1 are provided, wherein the stem 21 Used to provide support for the LED filament 22, the stem 21 includes an exhaust pipe 211 and a flare tube 212, and the exhaust pipe 211 and the two guide wires 23 pass through the flare tube 212. Next, in step S22, as shown in FIG. 2-2, both ends of the LED filament 22 are welded to the two guide wires 23 passing through the stem 21 to constitute an LED bulb semi-finished product 24. Then, in step S23, as shown in Figures 2-3, a glass envelope 25 is provided and the glass envelope 25 is placed over the head of the LED bulb blank 24 to provide protection to the head of the LED bulb blank 24. Further, in step S24, as shown in Figs. 2-4, the glass case 25 is sealed by a sealing machine, and the excess gas inside the glass case 25 is removed by the exhauster via the exhaust pipe 211. In addition, in step S25, the excess portion of the exhaust pipe 211 is removed, and the lamp cap 26 is provided, so that the two guide wires 23 are electrically connected to the lamp cap 26, respectively, to constitute the LED bulb finished product 2 shown in FIG. 2-5.

Therefore, the LED bulb 2 is now required to be supported by the support of the stem 21 so that the manufacturing process of the LED bulb 2 is complicated, and the manufacturing cost of the derivatized LED bulb 2 is high. In addition, as shown in FIG. 2-5, the inside of the LED bulb finished product 2 needs a reserved space 22 to set the front end 213 of the stem 21, so that the length of the LED bulb 2 cannot be effectively shortened, and the existing small-sized illumination bulb cannot be completely replaced. .

In view of the above disadvantages of the prior art, the present invention provides an LED bulb comprising: a guide wire support set, an LED filament, a glass envelope and a lamp cap. The guidewire support set has a first guidewire, a second guidewire and at least a fixed block. The fixing block fixes the first guide wire and the second guide wire such that the first guide wire and the second guide wire become a guide wire support structure. The two ends of the LED filament are respectively welded to the first ends of the first guide wire and the second guide wire, and are supported by the guide wire support structure. The head of the glass case has an accommodating space for accommodating the LED filament, and the tail of the glass case is condensed to clamp the first guide wire and the second end of the second guide wire. The lamp caps are electrically connected to the second ends of the first guide wire and the second guide wire, respectively.

Alternatively, the LED bulb has a plurality of fixed blocks. The material of the fixed block is glass. The material of the first guide wire and the second guide wire is Dumet. The base is welded to the second ends of the first guide wire and the second guide wire, respectively.

Furthermore, the present invention further provides a method for manufacturing an LED bulb, comprising the steps of: Step S11, providing an LED filament and a guide wire support group, wherein the guide wire support group has a first guide wire, a second guide wire and a fixed block The fixing block fixes the first guide wire and the second guide wire such that the first guide wire and the second guide wire become the guide wire support structure. Step S12, the two ends of the LED filament are respectively soldered to the first ends of the first guide wire and the second guide wire to form a semi-finished product of the LED bulb. In step S13, a glass case is provided, wherein the head and the tail of the glass case respectively have an accommodating space and a through passage, and the LED filament enters the accommodating space via the through passage. In step S14, the tail of the glass case is condensed to close the through passage, and the second end of the first guide wire and the second guide wire are clamped. In step S15, a lamp cap is provided, and the first guide wire and the second end of the second guide wire are respectively electrically connected to the lamp cap to constitute a finished LED bulb.

Alternatively, the method of manufacturing the LED light bulb of the present invention further includes the step of: removing excess gas in the accommodating space by passing through the passage. Remove excess portions of the tail of the glass envelope.

Compared with the prior art, the present invention provides an LED bulb and a manufacturing method thereof, which replaces the stem of the current LED bulb by two guide wires for supplying electric energy, and provides support positioning for the LED filament, thereby reducing the core pillar. In addition to manufacturing materials, the manufacturing process of LED bulbs can be simplified to reduce the manufacturing cost of LED bulbs. Furthermore, there is no need to reserve a space for the inside of the LED bulb, so that the length of the LED bulb can be effectively reduced, and it can be applied to a small-sized illumination bulb.

The other aspects of the present invention will be readily understood by those skilled in the art from this disclosure. The invention may also be embodied or applied by other different embodiments. The details of the present invention can be variously modified and changed without departing from the spirit and scope of the invention. In particular, the relative relationship and relative positions of the various elements in the drawings are for illustrative purposes only and are not representative of actual implementation of the invention.

The features of the LED bulb of the present invention and the method of manufacturing the same are disclosed with reference to the embodiments of FIGS. 3 to 4-5.

Regarding the manufacture of the LED bulb of the present invention, the following steps are included as shown in FIG. 3:

In step S11, as shown in FIG. 4-1, the LED filament 12 and the guide wire support group 11 are provided. The LED filament 12 is a strip. The guide wire support group 11 has a first guide wire 111, a second guide wire 112, and a fixed block 113. The first guide wire 111 and the second guide wire 112 are conductors of electrical energy, and may be made of Dumet's material. The fixing block 113 may have one or more, and the material of the fixing block 113 may be glass. The fixing block 113 fixes the first guide wire 111 and the second guide wire 112 such that the first guide wire 111 and the second guide wire 112 are integrated into one, and becomes a guide wire support structure.

Step S12, as shown in FIG. 4-2, the two ends of the LED filament 12 are respectively soldered to the first end E1 of the first guide wire 111 and the second guide wire 112, and the LED filament 12 can be connected by the first guide wire 111. The second guidewire 112 receives electrical energy and is positioned to support the guidewire support structure to form the LED bulb semi-finished product 15.

In step S13, as shown in FIG. 4-3, a glass case 13 is provided, wherein the head portion 131 and the tail portion 132 of the glass case 13 respectively have an accommodating space 1311 and a through passage 1321. The LED filament 12 is caused to enter the accommodating space 1311 via the through passage 1312, so that the LED filament 12 is protected by the glass casing 13.

Step S14, as shown in FIG. 4-4, the excess gas in the accommodating space 1311 is removed by the passage of the channel 1321 to prevent moisture in the operating environment of the LED filament 12, and then the tail of the glass envelope 13 is condensed. The passage 1321 is closed and the first guide wire 111 and the second end E2 of the second guide wire 112 are clamped, and then the excess portion of the tail portion 132 of the glass envelope 13 is removed.

In step S15, as shown in FIG. 4-5, the lamp cap 14 is provided, and the first guide wire 111 and the second end E2 of the second guide wire 112 are electrically connected to the lamp cap 14 respectively to form the LED bulb finished product 16.

Regarding the structure of the LED bulb of the present invention, as shown in FIGS. 4-5, the LED bulb 1 includes a guide wire support group 11, an LED filament 12, a glass envelope 13, and a lamp cap 14. The guide wire support group 11 has a first guide wire 111, a second guide wire 112, and a fixed block 113. The first guide wire 111 and the second guide wire 112 serve as a path for supplying electrical energy to the LED filament 12. The lamp cap 14 is used to electrically connect an external power source. The material of the first guide wire 111 and the second guide wire 112 may be Dumet. The first guide wire 111 and the first end E1 of the second guide wire 112 are respectively welded to both ends of the LED filament 12. The first guide wire 111 and the second end E2 of the second guide wire 112 are electrically connected to the base 14 respectively.

The fixing block 113 is, for example, a glass ball for fixing the first guide wire 111 and the second guide wire 112 such that the first guide wire 111 and the second guide wire 112 become a guide wire support structure to provide support for the LED filament 12 . . The fixed block 113 can be a spheroid or other shape that is easy to form. The head 131 of the glass envelope 13 has an accommodation space 1311 for accommodating the LED filament 12. The accommodating space 1311 can be filled with an inert gas. The tail portion 132 of the glass shell 13 is condensed to sandwich the first guide wire 111 and the second end E2 of the second guide wire 112 to provide positioning of the first guide wire 111 and the second guide wire 112, and maintain the accommodation space 1311. status.

In summary, the present invention provides an LED bulb and a method of manufacturing the same, which utilizes a guide wire for supplying electric energy to an LED filament of a strip to provide support positioning for the LED filament, thereby omitting the stem of the current LED bulb The setup is to simplify the manufacturing process of LED bulbs while reducing the manufacturing cost of LED bulbs. In addition, since the LED bulb of the present invention does not require space to set the stem, it is possible to effectively reduce the length as a small-sized illumination bulb.

The above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Modifications and variations of the above-described embodiments can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be as defined in the scope of the invention.

1‧‧‧LED bulb

11‧‧‧Guide Support Group

111‧‧‧First guide wire

112‧‧‧Second guide wire

113‧‧‧Fixed blocks

12‧‧‧LED filament

13‧‧‧ glass shell

131‧‧‧ head

1311‧‧‧ accommodating space

132‧‧‧ tail

1321‧‧‧through passage

14‧‧‧ lamp holder

15‧‧‧LED bulb semi-finished products

16‧‧‧LED bulb finished

2‧‧‧LED bulb

21‧‧‧core

211‧‧‧Exhaust pipe

212‧‧‧ horn tube

213‧‧‧ front end

22‧‧‧LED filament

23‧‧‧ Guide wire

24‧‧‧LED bulb semi-finished products

25‧‧‧ glass shell

26‧‧‧ lamp holder

27‧‧‧Set space

E1‧‧‧ first end

E2‧‧‧ second end

Figure 1 is a flow chart for manufacturing a conventional LED bulb.

2-1 to 2-5 are schematic views of an embodiment of the steps shown in Fig. 1.

Fig. 3 is a flow chart showing the manufacture of the LED bulb of the present invention.

4-1 to 4-5 are schematic views of an embodiment of the steps shown in Fig. 3.

Claims (8)

An LED bulb includes: a guide wire support set having a first guide wire, a second guide wire and at least one fixed block, the fixed block fixing the first guide wire and the second a guide wire, so that the first guide wire and the second guide wire become a guide wire support structure; an LED filament, the LED filament is a strip body, and the two ends are respectively welded to the first guide wire and the first The first end of the two guide wires is supported by the guide wire support structure; a glass case having a receiving space for receiving the LED filament, and the tail of the glass case is condensed and clamped Positioning the first guide wire and the second end of the second guide wire; and a base that is electrically connected to the second end of the first guide wire and the second guide wire, respectively. The LED light bulb of claim 1, wherein the at least one fixing block of the guide wire supporting group is a plurality of fixing blocks. The LED light bulb of claim 1, wherein the fixing block is made of glass. The LED light bulb of claim 1, wherein the material of the first guide wire and the second guide wire is Dumet. The LED light bulb of claim 1, wherein the base is welded to the second end of the first guide wire and the second guide wire, respectively. A method for manufacturing an LED bulb includes the following steps: Step S11, providing an LED filament and a guide wire support group, wherein the LED filament is a strip body, the guidewire support group has a first guide wire, and a guide wire a second guide wire and at least one fixing block, the fixing block fixing the first guide wire and the second guide wire, so that the first guide wire and the second guide wire become a guide wire supporting structure; Step S12, The two ends of the LED filament are respectively soldered to the first end of the first guide wire and the second guide wire to form an LED bulb semi-finished product; Step S13, a glass case is provided, wherein the head of the glass case is The tail portion has an accommodating space and a through passage, respectively, and the LED filament enters the accommodating space via the through passage; in step S14, the tail portion of the glass shell is condensed to close the through passage and clamp the a first guide wire and a second end of the second guide wire; and a step S15, a lamp cap is provided, and the first guide wire and the second end of the second guide wire are respectively electrically connected to the lamp cap to form a lamp LED bulbs are finished. The method for manufacturing an LED light bulb according to claim 6, further comprising the step of: removing excess gas in the accommodating space by the through passage. The method of manufacturing the LED light bulb of claim 1, further comprising the step of removing excess portions of the tail of the glass envelope.