CN104406068B - The assembly method of LED filament - Google Patents

Abstract

The present invention discloses the assembly method of a kind of LED filament, wherein, step one: LED filament is set between the electric-conductor of two floor plan, this filament polarity is placed according to unified direction, or arrange according to LED power and to go here and there and require to carry out layout, the conduction part at filament two ends is welded with electric-conductor, forms LED silk ribbon or heater tab with locating means; Step 2: by filament band or heater tab with locating means according to polarity arranged mode and default power string and mode, cut into multiple LED filament group; Step 3: the three-dimensional arrangement that single led filament group winding is formed filament group, connects the electric-conductor spot welding of corresponding position by filament arranged mode; Step 4: the electric-conductor of two electrodes in the LED filament group forming three-dimensional arrangement is connected with conducting bracket spot welding respectively; Step 5: the LED filament being connected with conducting bracket spot welding is assembled into and waits to seal in the muffle processed. The present invention has the features such as plane welding, stereo shaping, making be simple.

Description

The assembly method of LED filament

Technical field

The present invention relates to the assembly method of a kind of LED filament.

Background technology

Traditional LED is fixed on by LED chip on a cooling stand, the negative electrode of chip and the anode positive and negative electrode to support is connected with gold thread, stent electrode leads to into electric current, LED chip is made to send blue single-wavelength light, this blue light carries out the conversion of spectrum by the fluorescent glue covered on chip, is mixed to form white light. Support generally adopts engineering plastics or the heat sink plastics of band metal, then increases its light percentage extraction by bottom reflection, or shaping or band secondary optical lens changes the specific refractory power of material inside by silica gel, thus increases its bright dipping. Traditional packaged type, light utilization efficiency for LED chip is quite low, particularly fail to make full use of the all-round light of LED chip, by by LED on the transparent pottery of strip or glass or carefully narrow metal substrate, the upper fluorescent glue of periphery parcel, make strip filament, it is possible to what increase LED goes out optical range. This kind of LED filament is applied to bulb lamp more, with the lighting angle feature that it is bigger, replaces conventional incandescent light.

LED filament surface fluorescence glue vulnerable to pollution, causes the decline even aging blackout in glue face of light extraction efficiency; The material structure of LED filament encapsulation is also more fragile, very easily damages in production operation, it is thus desirable to the electrical connection scheme of a design convenient and efficient solves the assembly problem of LED filament.

Chinese patent literature CN203797384U is the immediate prior art of the present invention. The filament assembling of existing LED filament lamp adopts spot welding mode, is directly fixed on by LED filament on a three-dimensional bracket with conductance silk, if filament and bulb axis are angled, it is possible to the homogeneity of raising Light distribation. During welding, first to be fixed support and filament, and be that predetermined angular contact with the conductance silk on support in predetermined position by the pin of filament, with spot-welding equipment, contact position is welded, after being soldered two pins of a filament, then support is rotated to an angle, repeat filament and place and welding, meanwhile, according to LED string and mode, solid space coordinate support rotation adjustment LED filament positive-negative polarity. This kind of structure mode, packaging support, filament, welding machine need from stereo multi-dimensinal degree compounding practice at interior materials and parts, frock tool and equipment etc., add that the intensity of LED filament itself is not high, cause quality of welding spot to be difficult to ensure, fraction defective height, automatic processing device structure also can be quite complicated, development difficulty is also high, drops into huge; Operator are required, and height, operation easier are big, efficiency is low; Propping up the increase that shelf structure has also placed restrictions on LED filament quantity, otherwise can hinder welding job, therefore the power of LED filament lamp is also limited. In a word, this mode is unfavorable for batch production scale operation.

Also someone imagines by the mode patching seat, is directly inserted in by LED filament and patches on seat, eliminates filament welding operation, and assembling quality efficiency is also high. But glass ball bulb lamp internal components when glass seal needs the high temperature bearing hundreds of degree in short-term; Operationally, filament leg not only undertakes the task of electrical connection to LED filament lamp, also to be undertaken the function of conduction heat radiation; LED filament also to be born electric and magnetic oscillation to a certain degree. With regard to these several respects, patch a mode and cannot be able to reliability application in practice.

Summary of the invention

(1) technical problem solved

It is an object of the invention to the problems referred to above existing for prior art, special offer is a kind of to be made simply, the assembly method of LED filament easy to assembly.

(2) technical scheme

For solving the problems of the technologies described above, the assembly method of LED filament of the present invention, wherein,

Step one: LED filament is set between the electric-conductor of two floor plan, LED filament polarity is placed according to unified direction, or arrange according to LED power and to go here and there and require to carry out layout, the conduction part at filament two ends is welded with above-mentioned electric-conductor, forms LED silk ribbon or heater tab with locating means;

Step 2: by LED silk ribbon or heater tab with locating means according to polarity arranged mode and default power string and mode, cut into multiple LED filament group;

Step 3: the three-dimensional arrangement that single led filament group winding is formed LED filament group, by filament arranged mode, the electric-conductor spot welding of corresponding position is connected, make this three-dimensional arrangement have two electrodes, and from one of them electrode to another electrode all LED filament polar orientation consistent;

Step 4: the electric-conductor of two electrodes in the LED filament group forming three-dimensional arrangement is connected with conducting bracket spot welding respectively;

Step 5: the LED filament being connected with conducting bracket spot welding is assembled into and waits to seal in the muffle processed.

As optimization, above-mentioned electric-conductor is conductive filament or conduction bands.

As optimization, in step one, above-mentioned two parallel settings of electric-conductor, the angle between above-mentioned LED filament and electric-conductor is 0 �㡫90 ��.

As optimization, in step one, above-mentioned two electric-conductors arrange in the same way with identical radian measure, and the center of circle of circular arc electric-conductor is pointed in the one end of the LED filament being arranged between electric-conductor.

(2) useful effect

Compared with prior art, the present invention has the following advantages: the present invention has the feature of plane welding, stereo shaping, plane welding is the important step three-dimensional for filament weldprocedure simplified, plane operations platform completes the welding job of filament, greatly degree the difficulty of filament assemble welding be can reduce, quality and the efficiency of welding greatly promoted.

Article two, the spacing of conductive filament or conduction bands, the spacing of LED filament and angle can according to filament length, glass envelope bore, become the needs of lamp power and Light distribation to adjust, it is possible to be suitable for LED filament lamp multi-form, power.

Article two, the spacing of the spacing of conductive filament or conduction bands, LED filament is different with angle, and after stereo shaping, the three-dimensional viewpoin of filament is also different, compares present common tapered structure, it does not have dead angle, have evenly intensity of illumination distribution.

The positive-negative polarity of LED filament can carry out assembled arrangement as required, to meet LED filament different capacity, different string the demand of mode.

Sector after welding or banded LED filament group are cut into the sheet filament group of needs by different capacity or also mode of going here and there.

Based on the mode that this plane is welded, exploitation chip filament group and the automatic welding production equipment of continuous band filament.

Accompanying drawing explanation

Fig. 1 is the structural representation of LED filament of the present invention.

Fig. 2 is the structural representation of a kind of LED silk ribbon making straight barrel type three-dimensional arrangement of the present invention.

Fig. 3 is the structural representation that another kind of the present invention makes the LED silk ribbon of straight barrel type three-dimensional arrangement, by single lamp 8 LED filament 4 and carry out layout filament in the way of 2 strings.

Fig. 4 is the front view of the three-dimensional arrangement that the present invention is formed by the LED filament group winding of Fig. 3.

Fig. 5 is the vertical view of Fig. 4.

Fig. 6 is the stereographic map of Fig. 4.

Fig. 7 is the structural representation that the three-dimensional arrangement of the LED filament group of Fig. 4 is installed in bulb glass cover.

Fig. 8 is the structural representation of a kind of LED silk ribbon making cone cylinder type three-dimensional arrangement of the present invention.

Fig. 9 is the front view of the three-dimensional arrangement that the present invention is formed by the LED filament group winding of Fig. 8.

Figure 10 is the vertical view of Fig. 9.

Figure 11 is the stereographic map of Fig. 9.

Figure 12 is the structural representation that the three-dimensional arrangement of the LED filament group of Fig. 9 is installed in bulb glass cover.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail. Following examples are for illustration of the present invention, but can not be used for limiting the scope of the invention.

Enforcement mode one: as shown in Fig. 1 to 7, the assembly method of LED filament of the present invention, wherein,

Step one: LED filament 1 is set between two electric-conductors, LED filament 1 polarity is placed according to unified direction, or arrange according to LED power and to go here and there and require to carry out layout, the conduction part at filament 1 two ends is welded with above-mentioned electric-conductor, forms LED silk ribbon or LED filament sheet; Above-mentioned electric-conductor is conductive filament or conduction bands, and in the present embodiment, electric-conductor is conduction bands 2, above-mentioned two parallel settings of electric-conductor, and the angle between above-mentioned LED filament 1 and electric-conductor is 0 �㡫90 ��, as shown in figures 2 and 3;

Step 2: by LED silk ribbon or LED filament sheet according to polarity arranged mode and default power string and mode, cut into multiple LED filament group;

Step 3: the three-dimensional arrangement that single led filament group winding is formed LED filament group, by filament arranged mode, the electric-conductor spot welding of corresponding position is connected, make this three-dimensional arrangement have two electrodes, and from one of them electrode to another electrode all LED filament polar orientation consistent; In the present embodiment, the three-dimensional arrangement of LED filament group is straight barrel type.

Step 4: the electric-conductor of two electrodes in the LED filament group forming three-dimensional arrangement is connected with conducting bracket spot welding respectively, LED filament group can be made to be connected to power supply by conducting bracket;

Step 5: the LED filament being connected with conducting bracket spot welding is assembled into and waits to seal in the muffle processed.

Wherein, in above-mentioned steps one, filament, the position of electric-conductor placement, distance, angle are arranged according to following manner:

Wherein, being set to identical by all filament polarity in Fig. 2, sanction is cut rear filament group and is 6 filament parallel waies; Filament polarity alternately being placed taking 4 as one group in Fig. 3, cutting out and cutting rear filament group is 4 parallel connections head and the tail serial connection 4 parallel connections again, namely in the industry alleged 4 and 2 string modes.

Filament and conductive filament such as Fig. 2 of forming the three-dimensional filament support structure of straight barrel type place continuously in banded. It is N as formed the filament quantity of a lamp, straight bucket shape filament support diameter D after stereo shaping, filament support height is h, and filament becomes �� with lamp holder axial angle, then two electric-conductor spacing h and �� of filament support height that is parallel placement are by the constraint of following equation:

H=l sin ��

Wherein, l is the spacing of filament two solder joint; During floor plan, �� can between 0 �㡫90 ��, but during stereo shaping, �� must meet following requirement:

$\mathrm{\&alpha;}<\arccos \frac{D}{l}$

And actual value should need adjustment according to one-tenth intensity of illumination distribution homogeneity.

The spacing t of arrangement between filament and filament on filament band:

$t=\frac{\mathrm{\&pi;}D}{N}$

Wherein, filament support diameter D is depending on scarfing diameter before the sealing of filament lamp glass envelope, and D is excessive cannot load lens, crosses little configuration and the assembly operation convenience then affecting filament quantity.

Embodiment two: as illustrated in figs. 8-12, embodiment two is with the difference implementing: in step one, above-mentioned two electric-conductors are arranged in the same way with identical radian measure, the center of circle of circular arc electric-conductor is pointed in the one end of the LED filament being arranged between electric-conductor, as shown in Figure 8, according to subsequent step three stereo shaping shape for boring bucket type; Wherein, filament, the position of electric-conductor placement, distance, angle are arranged according to following manner:

The filament forming the three-dimensional filament support structure of cone bucket type becomes covering of the fan shape with conductive filament planar arrangement, see Fig. 7, it is N as formed the filament quantity of a lamp, bucket shape filament support upper base diameter d is bored after stereo shaping, go to the bottom diameter D, filament support height is h, and filament becomes �� with lamp holder axial angle, then filament support height is that the relation of h and filament and lamp holder axial angle �� still obeys following formula:

H=l sin ��

Wherein l is the spacing of filament two solder joint

And on the go to the bottom relation of diameter and filament and the axial angle of lamp holder meet following formula:

D-d=2l cos ��

Fan-shaped radius R is:

$R=\frac{l\&CenterDot;D}{D-2l\&CenterDot;cos\mathrm{\&alpha;}}$

Then fan-shaped central angle �� is:

$\mathrm{\&beta;}=\frac{360D}{2\mathrm{\&pi;}\&CenterDot;R}=\frac{180}{\mathrm{\&pi;}}(\frac{D}{l}-2cos\mathrm{\&alpha;})$

Between filament and filament, angle theta is:

$\mathrm{\&theta;}=\frac{180}{\mathrm{\&pi;}\&CenterDot;N}(\frac{D}{l}-2cos\mathrm{\&alpha;})$

$R=\frac{l\&CenterDot;D}{D-2l\&CenterDot;cos\mathrm{\&alpha;}}$

Then fan-shaped central angle �� is:

$\mathrm{\&beta;}=\frac{360D}{2\mathrm{\&pi;}\&CenterDot;R}=\frac{180}{\mathrm{\&pi;}}(\frac{D}{l}-2cos\mathrm{\&alpha;})$

Between filament and filament, angle theta is:

$\mathrm{\&theta;}=\frac{180}{\mathrm{\&pi;}\&CenterDot;N}(\frac{D}{l}-2cos\mathrm{\&alpha;})$

The present invention has the feature of plane welding, stereo shaping, plane welding is the important step three-dimensional for filament weldprocedure simplified, plane operations platform completes the welding job of filament, it is possible to greatly degree reduces the difficulty of filament assemble welding, greatly promotes quality and the efficiency of welding.

The above is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (4)

1. the assembly method of a LED filament, it is characterised in that:

Step one: LED filament is set between the electric-conductor of two floor plan, LED filament polarity is placed according to unified direction, or arrange according to LED power and to go here and there and require to carry out layout, the conduction part at filament two ends is welded with above-mentioned electric-conductor, forms LED silk ribbon or heater tab with locating means;

Step 2: by LED silk ribbon or heater tab with locating means according to polarity arranged mode and default power string and mode, cut into multiple LED filament group;

Step 3: the three-dimensional arrangement that single led filament group winding is formed LED filament group, by filament arranged mode, the electric-conductor spot welding of corresponding position is connected, make this three-dimensional arrangement have two electrodes, and from one of them electrode to another electrode all LED filament polar orientation consistent;

Step 4: the electric-conductor of two electrodes in the LED filament group forming three-dimensional arrangement is connected with conducting bracket spot welding respectively;

Step 5: the LED filament being connected with conducting bracket spot welding is assembled into and waits to seal in the muffle processed.

2. the assembly method of LED filament according to claim 1, it is characterised in that: described electric-conductor is conductive filament or conduction bands.

3. the assembly method of LED filament according to claim 1 and 2, it is characterised in that: in step one, described two parallel settings of electric-conductor, the angle between described LED filament and electric-conductor is 0 �㡫90 ��.

4. the assembly method of LED filament according to claim 1 and 2, it is characterised in that: in step one, described two electric-conductors arrange in the same way with identical radian measure, and the center of circle of circular arc electric-conductor is pointed in the one end of the LED filament being arranged between electric-conductor.