CN208687390U - A kind of LED filament headlamp of overcurrent protection - Google Patents

Abstract

The utility model provides a kind of LED filament headlamp of overcurrent protection; it include: light transmission shell, lamp cap, LED filament; the lamp cap has the first connecting pin being separately connected with two poles, second connection end; LED filament includes multiple LED wafers, first support and second support; LED wafer is connected and fixed with first support and/or second support; first support and second support are wrapped with photic zone, first support and second support and extend outward the first pin and second pin from photic zone；First pin is electrically connected through self-recovery fuse with the first connecting pin and/or second pin is electrically connected through self-recovery fuse with second connection end.It is electrically connected through self-recovery fuse with the first connecting pin by the first pin and/or second pin is electrically connected through self-recovery fuse with second connection end; the headlamp is set to be avoided that the damage of LED filament in short circuit or current overload; and illumination functions can be reused when restoring; to preferably protect LED filament, prolong the service life.

Description

A kind of LED filament headlamp of overcurrent protection

Technical field

The utility model relates to light bulb field, the LED filament headlamp of especially a kind of overcurrent protection.

Background technique

There is revolutionary new light sources LED from 20th century, by feat of energy conservation and environmental protection, the advantages that service life is long becomes much more popular rapidly illumination Market, LED become the lighting source of the following mainstream, are widely used in commercial lighting, industrial lighting, outdoor lighting etc..But in the people With the development of illumination aspect compared with slow, for many people, LED light is a new type light source having never heard of. 2008 Year, Japanese oxtail light source, which is released, has reversed this with the appearance of the bulb-type lamps and lanterns " LED filament light bulb " of incandescent lamp prototype configuration LED One phenomenon, " traditional external form ", ' formula ' of upgrading, it is seen that it is exactly to be familiar with that the LED lamp that it is made into, which just can figure out it, Illuminator.Then using LED filament as the candle lamp of light source, Crystal lamp, bulb lamp start largely occur and it is more and more Consumer received.

The form that screw lamp holder is defined in standard GB/T/T1406.1-2008 is right-handed thread.

Publication No. CN204962339U discloses a kind of inflation LED bulb, including blister, bracket and filament assembly；It is described Cavity is offered inside blister, is filled with heat-conducting gas in the cavity；The bracket fixed setting is in the cavity；It is described Filament assembly is located in the cavity, and the filament assembly includes the LED and wire of SMD or CSP encapsulation, the LED and institute State wire quantity be it is multiple, alternately connection forms chain, the both ends of the filament assembly for the LED and the wire It is fixedly connected on the bracket.

Existing LED bulb, because lacking overcurrent protection, when electric current is excessive or short circuit occurs, filament is easy It now damages, it cannot be guaranteed that the service life of LED bulb.

Utility model content

In order to overcome the above problem, the utility model provides and a kind of can protect LED filament and prolong the service life excessively electric Flow the LED filament headlamp of protection.

In order to achieve the above-mentioned advantages, the utility model provides a kind of LED filament headlamp of overcurrent protection, comprising: light transmission shell, Lamp cap, LED filament, the lamp cap have the first connecting pin being separately connected with two poles, second connection end, the LED filament Including multiple LED wafers, first support and second support, the LED wafer and the first support and/or the second support It is connected and fixed, the LED wafer both ends are electrically connected respectively with the first support and the second support or multiple LED Chip is divided into the LED wafer that multiple groups are serially connected, the LED wafer both ends being serially connected described in every group respectively with the first support Be electrically connected with the second support, the first support and the second support are wrapped with photic zone, the first support and The second support extends outward the first pin and second pin from the photic zone；First pin insures through self- recoverage Silk is electrically connected with first connecting pin and/or the second pin is electrically connected through self-recovery fuse and the second connection end It connects.

In one embodiment of the utility model, one in first pin, the second pin and described the One connecting pin connects, another in first pin, the second pin is connect with the second connection end.

In one embodiment of the utility model, first pin, the second pin quantity be two, two A first pin and two second pins are located at the euphotic two sides.

In one embodiment of the utility model, first pin and the second pin are positioned at described euphotic The same side.

In one embodiment of the utility model, first pin, the second pin are located at described euphotic Two sides.

In one embodiment of the utility model, there is insulation between first connecting pin and the second connection end Portion.

In one embodiment of the utility model, the quantity of the LED filament be it is multiple, the LED filament top First pin, the first pin of second pin and adjacent LED filament top, second pin electrical connection.

In one embodiment of the utility model, first pin and the second pin are located at the LED filament Lower part, the quantity of the LED filament be it is multiple, the LED filament top is connected and fixed with adjacent LED filament.

In one embodiment of the utility model, the lamp cap or the light transmission shell are equipped with fixed column, the fixed column It is fixed with the first conducting wire connecting respectively with first connecting pin, the second connection end, the second conducting wire, first conducting wire It is electrically connected with first pin, second conducting wire is electrically connected with the second pin.

In one embodiment of the utility model, the LED filament is U-shaped structure, first pin and described the The quantity of two pins is two, and two first pins and two second pins are located at the photic zone two Side.

It is electrically connected in the present invention through self-recovery fuse with the first connecting pin by the first pin and/or second draws Foot is electrically connected through self-recovery fuse with second connection end, and the headlamp is made to be avoided that LED light in short circuit or current overload The damage of silk, and illumination functions can be reused when restoring, to preferably protect LED filament, prolong the service life.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of inflation LED bulb of the prior art.

Fig. 2 show the structural schematic diagram of the LED filament headlamp of the overcurrent protection of the utility model first embodiment.

Fig. 3 show the structural schematic diagram of the LED filament of the LED filament headlamp of the overcurrent protection of Fig. 1.

Fig. 4 show the first support of the LED filament of Fig. 3 and the structural schematic diagram of second support.

Fig. 5 show the partial enlarged view in the middle part of the first support and second support of Fig. 4.

Fig. 6 show the sectional view at the 1-1 and 2-2 of Fig. 5.

Fig. 7 show the structural schematic diagram of the LED filament of the utility model second embodiment.

Fig. 8 show the structural schematic diagram of the LED filament of the utility model 3rd embodiment.

Fig. 9 show the structural schematic diagram of the LED filament of the 5th embodiment of the utility model.

Figure 10 show the structural schematic diagram of the LED filament of the utility model sixth embodiment.

Figure 11 show the structural schematic diagram of the LED filament of the 7th embodiment of the utility model.

Figure 12 show the structural schematic diagram of the LED filament of the 8th embodiment of the utility model.

Figure 13 show the sectional view at the 3-3 of Figure 12.

Figure 14 show the structural schematic diagram of the self-recovery fuse of the LED filament headlamp of the current protection of Fig. 2.

Figure 15 show the LED filament structure of the lighting lamp schematic diagram of the overcurrent protection of the 9th embodiment of the utility model.

Figure 16 show the LED filament structure of the lighting lamp schematic diagram of the overcurrent protection of the 9th embodiment of the utility model.

Figure 17 show the cut-away illustration and its partial enlarged view of the LED filament headlamp of the overcurrent protection of Fig. 2.

Figure 18 show the cut-away illustration of the LED filament headlamp of the overcurrent protection of the tenth embodiment of the utility model And its partial enlarged view.

Figure 19 show the cutting signal of the LED filament headlamp of the overcurrent protection of the 11st embodiment of the utility model Figure and its partial enlarged view.

Figure 20 show the cutting signal of the LED filament headlamp of the overcurrent protection of the 12nd embodiment of the utility model Figure and its partial enlarged view.

Figure 21 show the LED filament of the 13rd embodiment of the utility model and the structural schematic diagram of fixed part.

Figure 22 show the LED filament of the 14th embodiment of the utility model and the structural schematic diagram of fixed part.

Figure 23 show the structural representation of the LED filament headlamp of the overcurrent protection of the 15th embodiment of the utility model Figure and its partial enlarged view.

Specific embodiment

Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken, Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes specific embodiment, structure, feature and its effect, Detailed description is as follows.

Fig. 2 is referred to, a kind of LED filament headlamp of overcurrent protection of the utility model first embodiment includes: Bare hull 7, the lamp cap 8 being connected and fixed with light transmission shell 7, the LED filament 6 being contained in the cavity that light transmission shell 7 and lamp cap 8 are formed.

Fig. 3 is referred to, LED filament 6 includes: first support 10, second support 20, for fixing first support 10 and second The insulator 30 of bracket 20 wraps up the photic zone 40 at 20 middle part of first support 10 and second support.Insulator 30 is located at first Near the end of frame 10 and second support 20.Insulator 30 is preferably made of epoxy resin, and certain insulator 30 can be with It is made of plastics or rubber.

Refer to Fig. 4, first support 10 is divided for the first pin 11 and die bond portion 12, and the first pin 11 is located at die bond portion 12 Both ends, second support 20 includes second pin 21 and power supply 22, and second pin 21 is located at the both ends of power supply 22.First draws Foot 11 is used to connect with power supply circuit with second pin 21.Between first support 10 and second support 20 have gap, i.e., first 20 open circuit of bracket 10 and second support, it should be noted that the gap filling between first support 10 and second support 20 has light transmission Layer 40.LED filament 6 further includes multiple LED wafers 50, and multiple LED wafers 50 are uniformly fixed on 12 upper surface of die bond portion and line up one Column.In other embodiments, the lower surface of the first power supply is also fixed with multiple LED wafers 50.Photic zone 40 can be silica gel Fluorescent adhesive layer made of layer, epoxy resin layer, silica gel and fluorescent powder.

Fig. 5, Fig. 6 are referred to, die bond portion 12 is spaced apart die bond region A and join domain, the section of die bond region A Area is greater than the area of section of join domain, and the width of die bond region A is greater than the width of join domain.(width is the side x in Fig. 3 To length) LED wafer 50 is fixed on the upper surface of die bond region A.Area of section in the middle part of preferred die bond region A is gradually Area of section in the middle part of towards join domain gradually continuously becomes smaller, and specific die bond portion 12 is towards the first side of power supply 22 Edge 120 is waveform face, and the fixed surface of LED wafer 50 in first edge 120 and die bond portion 12 is vertical, first edge 120 with consolidate The section line on the surface of the fixed LED wafer 50 in brilliant portion 12 is sine curve x=A1sin (ω π y+ φ)+k1.Die bond region and company Connecing region is plate structure.

X be first edge 120 in one end perpendicular to the first power supply towards the variable of another extreme direction；

A1 is amplitude, and A1 can be 0.5mm.

Φ is first phase, phase when x=0；Then moving up and down for curve is reflected on coordinate system；

K1, k2 are offset distance, are reflected on coordinate system then moving left and right for curve；

ω is angular speed, the vibration frequency of controlling curve.

Power supply 22 is spaced apart third region C and the fourth region D, and the area of section of third region C is less than the 4th The area of section of region D, the width of third region C are less than the width of the fourth region D.Section in the middle part of preferred third region C Area is increasingly towards the area of section in the middle part of the fourth region D and gradually continuously becomes larger.Die bond region A is corresponding with third region C, The width of join domain such LED filament 6 corresponding with the fourth region D can be smaller, and LED wafer 50 is led to respectively in the present embodiment It crosses conducting wire 50a to be electrically connected with the third region C of the die bond region A in die bond portion 12, power supply 22, LED is brilliant in other embodiments Piece 50 is electrically connected by conducting wire 50a with the fourth region D of the die bond region A in die bond portion 12, power supply 22 respectively.

The second edge 220 of power supply 22 towards the first power supply 22 is also waveform face, second edge 220 and die bond portion The surface of 12 fixed LED wafers 50 is vertical, and second edge 220 and the section line on the surface of the fixed LED wafer 50 in die bond portion 12 are Sine curve x=A2sin (ω π y+ φ)+k2, wherein y be first edge 120 in one end of the first power supply towards the other end The variable in direction.

X be first edge 120 in one end perpendicular to the first power supply towards the variable of another extreme direction；

A2 is amplitude, and A1 is greater than A2；A2 can be 0.25mm.

Φ is first phase, phase when x=0；Then moving up and down for curve is reflected on coordinate system；

K1, k2 are offset distance, are reflected on coordinate system then moving left and right for curve；

ω is angular speed, the vibration frequency of controlling curve.

50 both ends of LED wafer are connect by conducting wire 50a with die bond portion 12 and power supply 22.

Refer to Fig. 7, in the present embodiment, the first pin 11 is located at one end of the first power supply, and second pin 21, which is located at, to be supplied The one end of electric portion far from the first pin 11.

Refer to Fig. 8, in the present embodiment, the first pin 11 is located at one end of the first power supply, and second pin 21, which is located at, to be supplied Electric portion is close to one end of the first pin 11.

Refer to Fig. 9, in the present embodiment, first power supply and power supply at 20 middle part of first support 10 and second support are Arc.

Referring to Figure 10, in the present embodiment, every two LED wafer is connected into one group of LED wafer, and the two of every group of LED wafer End is electrically connected with first support 10 and second support 20 respectively.Thus 6V can be can be according to power supply.

Referring to Figure 11, in the present embodiment, every three LED wafers are connected into one group of LED wafer, and the two of every group of LED wafer End is electrically connected with first support 10 and second support 20 respectively.Thus 9V can be can be according to power supply.

2, Figure 13 referring to Figure 1, in the present embodiment, first support 10 is identical with the structure of second support 20, first support 10 die bond region A is boss shape, is respectively and fixedly provided with multiple LED wafers in first support 10 and second support 20, the two of LED wafer End is electrically connected with first support 10 and second support 20 respectively.

Referring to Figure 14, self-recovery fuse F are by the polymer resin Jing Guo specially treated and to be distributed in the conduction of the inside Particle composition.Conducting particles is closely strapped in outside crystalloid structure by polymer resin under normal operation, is constituted chain and is led Electric electric pathway, self-recovery fuse at this time are low resistive state, flow through heat caused by the electric current of self-recovery fuse F on route Can be small, crystal structure will not be changed.When short circuit or overload occur for route, the high current generation of self-recovery fuse F is flowed through Heat melts polymer resin, and volume increases rapidly, forms high-impedance state, and operating current is reduced rapidly, to carry out to circuit Limitation and protection.After troubleshooting, self-recovery fuse F crystallisation by cooling, volume contraction again, conducting particles, which re-forms, is led Electric pathway, self-recovery fuse F revert to low resistive state, so that the protection to circuit is completed, without artificial replacement.Compared to tradition Fuse overcurrent protection the shortcomings that be only capable of protection primary, and blowout needs to change, and self-recovery fuse F has overcurrent The advantages of overheating protection, the dual function restored automatically.

Self-recovery fuse F is electrically connected and/or is passed through with the first pin 11, the first connecting pin 81 respectively by wire 9 Wire 9 is electrically connected with second pin 21, second connection end 82 respectively.

5, Figure 16 referring to Figure 1, light transmission shell 7 are made of transparent glass or plastics.Light transmission shell 7 can any change shape, Color.Light transmission shell 7 is fixedly connected with lamp cap 8.

Referring to Figure 17, lamp cap 8, which has the first connecting pin 81 connected to power supply and is located at first connecting pin 81, to be carried on the back To the second connection end 82 of 7 side of light transmission shell, first connecting pin 81 is left hand thread structure.First pin 11, one in the second pin 21 is electrically connected through self-recovery fuse F with first connecting pin 81, first pin 11, another in the second pin 21 is electrically connected through self-recovery fuse F with the second connection end 82.Second connection end 82 connect for preventing the lamp cap 8 from setting the unmatched power supply of voltage with LED filament 6.

The screw thread of most light bulbs is right-handed thread on the market at present, and in contrast, second connection end 82 is in the company with lamp holder Connection error caused by mismatching because of screw thread is avoided in termination process, so as to avoid LED filament 6 because damaging caused by overtension It is bad.

First connecting pin 81 is arc 811 backwards to the end of light transmission shell 7, and first connecting pin 81 connects with described second Connect the insulation division 83 having between end 82 for preventing short circuit.

Referring to Figure 18, in the tenth embodiment of the utility model, pass through conductive wire 9 between multiple LED filaments 6 Connection, first pin 11 and the second pin 21 are located at the same side of the photic zone 40, the first pin 11 with it is another The first pin 11 connection 11 of LED filament 6, second pin 21 is connect with the second pin 21 of another LED filament 6.First pin It 11 is electrically connected through self-recovery fuse F with first connecting pin 81, the second pin 21 is through self-recovery fuse F and institute State the electrical connection of second connection end 82.The wire 9 can be used for fixing LED filament 6, be combined into LED filament 6 in light transmission shell 7 A variety of moulding.Wire 9 is also used to support multiple LED filaments 6, and LED filament 6 is made to remain at 7 center of light transmission shell. The structure is relatively simple, and processing cost is lower.

Referring to Figure 19, in the 11st embodiment of the utility model, the quantity of the LED filament 6 be it is multiple, it is described First pin 11 on 6 top of LED filament, the first pin 11 of second pin 21 and adjacent 6 top of LED filament, second pin 21 electrical connections.First pin 11 and the second pin 21 are located at the same side of the photic zone 40.First pin 11 warp Self-recovery fuse F is electrically connected with first connecting pin 81.

It refers to Figure 20, in the 12nd embodiment of the utility model, is connected between multiple LED filaments 6 by wire 9 It connects, first pin 11 and the second pin 21 are located at the same side of the photic zone 40, first pin 11 and another LED The first pin 11 connection 11 of filament 6, second pin 21 is connect with the second pin 21 of another LED filament 6.Described second draws Foot 21 is electrically connected through self-recovery fuse F with the second connection end 82.First pin 11 and the second pin 21 Positioned at 6 lower part of LED filament, the quantity of the LED filament 6 is multiple, 6 top of LED filament and adjacent LED filament 6 are fixed by glue connection.

Refer to Figure 21, Figure 22, in the 13rd embodiment of the utility model, first pin 11, described second are drawn Foot 21 is located at the two sides of the photic zone 40, and the first pin 11 connect 11 with the first pin 11 of another LED filament 6, and second draws Foot 21 is connect with the second pin 21 of another LED filament 6.

The lamp cap or the light transmission shell 7 are equipped with fixed column 91, and the fixed column 91 is fixed with to be connected with described first respectively End 81, the first conducting wire E1 that the second connection end 82 connects, the second conducting wire E2 are connect, the first conducting wire E1 draws with described first Foot 11 is electrically connected, and the second conducting wire E2 is electrically connected with the second pin 21.Fixed column 91 is made of transparent glass.Metal Silk 9 is then for fixing multiple LED filaments 6 and being electrically connected with second connection end 82, the first connecting pin 81.The structure is suitable for Volume is larger, the LED filament headlamp of the more complicated overcurrent protection of structure.

Refer to Figure 23, in the 14th embodiment of the utility model, LED filament 6 is contained in light transmission shell 7 and 8 shape of lamp cap At chamber in.The LED filament 6 is U-shaped structure, and the quantity of first pin 11 and the second pin 21 is two A, two first pins 11 and two second pins 21 are located at 40 two sides of photic zone.First pin 11 11 are connect with the first pin 11 of another LED filament 6, second pin 21 is connect with the second pin 21 of another LED filament 6.The One pin 11 is electrically connected through self-recovery fuse F with first connecting pin 81, second pin 21 through self-recovery fuse F with The second connection end 82 is electrically connected.When the first pin 11 and/or second pin 21 when one end are not electrically connected with lamp cap 8, The first pin 11 and/or second pin 21 of the other end can still make LED filament 6 be powered.Wire 9 is also used to more preferably simultaneously Fixation LED filament 6.

Currently, the LED filament headlamp main exit U.S. of the overcurrent protection, since the mains voltage in the U.S. is 110V, therefore the setting voltage of the LED filament 6 is also different from the 220V voltage of China, is low-voltage LED filament 6, in China It uses, then needs to install corresponding electronic transformer to change supply voltage to adapt to the LED filament of the overcurrent protection and shine The use condition of bright lamp.

Because LED filament 6 be low pressure filament, so the second connection end 82 of left hand thread structure only with corresponding lamp holder Connection, causes the damage as caused by voltage overload of LED filament 6 so as to avoid because connecting conventional lamp socket.

In conclusion the LED filament headlamp of the overcurrent protection of the utility model at least has the advantage that

In the present invention since the area of section in die bond region is greater than join domain, in this way when 6 stress of LED filament The deformation of join domain is big, and the deformation in die bond region is small, and LED wafer 50 is just less likely to be damaged.

Even if in the present invention due to LED wafer 50 or the every group of part LED wafer 50 parallel with one another of LED wafer 50 damage Bad or harness damage will not result in LED filament 6 and damage completely.

In the present invention, 7 structure of light transmission shell of the LED filament headlamp of overcurrent protection is changeable, LED filament 6 The both ends that first pin 11 and second pin 21 can be located at LED filament 6 can also be located at one end of LED filament 6, therefore LED simultaneously The moulding of the permutation and combination of filament 6 is changeable, and the LED filament headlamp of the overcurrent protection is able to satisfy diversified demand.

In the present invention since LED lamp holder 8 has the second connection end 82 of left hand thread structure, the i.e. over current protection The LED filament headlamp of shield can only connect lamp holder corresponding with LED lamp holder 8, thus LED light caused by preventing because of connection error The damage of silk 6.

It is electrically connected in the present invention through self-recovery fuse F with first connecting pin 81 by the first pin 11 And/or the second pin 21 is electrically connected through self-recovery fuse F with the second connection end 82, makes the LED of overcurrent protection Filament headlamp is avoided that the damage of LED filament in short circuit or current overload, and can reuse illumination when restoring Function prolongs the service life to preferably protect LED filament.

More than, it is only the preferred embodiment of the utility model, limit in any form not is made to the utility model System, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any to be familiar with sheet Technical professional is not departing within the scope of technical solutions of the utility model, when the technology contents work using the disclosure above A little change or it is modified to the equivalent embodiment of equivalent variations out, but all without departing from the content of the technical scheme of the utility model, according to According to the technical essence of the utility model any simple modification, equivalent variations and modification to the above embodiments, still fall within In the range of technical solutions of the utility model.

Claims (10)

1. a kind of LED filament headlamp of overcurrent protection, comprising: light transmission shell, lamp cap, LED filament, which has and power supply The first connecting pin that the two poles of the earth are separately connected, second connection end, which is characterized in that the LED filament includes multiple LED wafers, One bracket and second support, the LED wafer are connected and fixed with the first support and/or the second support, and the LED is brilliant Piece both ends are electrically connected respectively with the first support and the second support or multiple LED wafers are divided into multiple groups and mutually go here and there The LED wafer of connection, the LED wafer both ends being serially connected described in every group are electrically connected with the first support and the second support respectively It connects, the first support and the second support are wrapped with photic zone, the first support and the second support from described Photic zone extends outward the first pin and second pin；First pin is through self-recovery fuse and first connecting pin Electrical connection and/or the second pin are electrically connected through self-recovery fuse with the second connection end.

2. the LED filament headlamp of overcurrent protection according to claim 1, which is characterized in that first pin, institute One in second pin is stated to connect with first connecting pin, in first pin, the second pin another with The second connection end connection.

3. the LED filament headlamp of overcurrent protection according to claim 1, which is characterized in that first pin, institute The quantity for stating second pin is two, and two first pins and two second pins are located at the photic zone Two sides.

4. the LED filament headlamp of overcurrent protection according to claim 1, which is characterized in that first pin and The second pin is located at described euphotic the same side.

5. the LED filament headlamp of overcurrent protection according to claim 1, which is characterized in that first pin, institute It states second pin and is located at the euphotic two sides.

6. the LED filament headlamp of overcurrent protection according to claim 1, which is characterized in that first connecting pin There is insulation division between the second connection end.

7. the LED filament headlamp of overcurrent protection according to claim 3, which is characterized in that the number of the LED filament Amount is multiple, first pin on the LED filament top, the first pin of second pin and adjacent LED filament top, second Pin electrical connection.

8. the LED filament headlamp of overcurrent protection according to claim 4, which is characterized in that first pin and The second pin is located at the LED filament lower part, the quantity of the LED filament be it is multiple, the LED filament top with it is adjacent LED filament be connected and fixed.

9. the LED filament headlamp of overcurrent protection according to claim 3, which is characterized in that the lamp cap is described Light transmission shell is equipped with fixed column, and the fixed column is fixed with the connect respectively with first connecting pin, the second connection end One conducting wire, the second conducting wire, first conducting wire are electrically connected with first pin, second conducting wire and second pin electricity Connection.

10. the LED filament headlamp of overcurrent protection according to claim 1, which is characterized in that the LED filament is U The quantity of shape structure, first pin and the second pin is two, two first pins and two described Two pins are located at the photic zone two sides.