CN201209782Y

CN201209782Y - Light-emitting diode bulb

Info

Publication number: CN201209782Y
Application number: CNU2008201153428U
Authority: CN
Inventors: 蔡承宏; 李新明; 高嘉辉; 尤宏文
Original assignee: Edison Opto Corp
Current assignee: Edison Opto Corp
Priority date: 2008-05-29
Filing date: 2008-05-29
Publication date: 2009-03-18
Anticipated expiration: 2018-05-29

Abstract

The utility model relates to a light-emitting bulb, which can be screwed in a bulb holder and comprises a base, a conductive bottom shell, a heat-dissipating module, a lamp cup, a circuit board and an optic packaging plate. The base is screwed on the conductive bottom shell and the heat-dissipating module respectively; the conductive bottom shell is screwed on the bulb holder; the heat-dissipating module comprises a heat-dissipating body and a plurality of heat-dissipating fins which are radially extended outwards from the heat-dissipating body; a plurality of light-emitting diodes are arranged on the circuit board; the lamp cup is combined with the heat-dissipating module through the circuit board and provided with a plurality of holes; and the optic packaging plate is embedded in the lamp cup and provided with a plurality of optic lenses. The light-emitting diodes, the holes and the optic lenses correspond to one another.

Description

Light emitting diode bulb

Technical field

The utility model relates to a kind of light emitting diode bulb, particularly a kind ofly is screwed together in a tube face, and outward appearance does not have the light emitting diode bulb of any screw assembly.

Background technology

Light emitting diode (Light Emitting Diode; Electronic building brick that can be luminous during LED) for a kind of the energising, its principle of luminosity is to convert electrical energy into light, just P-N engage is injected minority carrier, it is combined with majority carrier again and send the diode of natural daylight, desire to make the electron-hole pair that LED is luminous more than well must having extremely directly compound.After LED imposed forward bias voltage drop, space charge layer narrowed down, based on the fermi level difference of both sides, so the main carrier of P-N both sides injects N side and P side respectively.Because the minority carrier of both sides rolls up, and makes and carries out the compound again of a large amount of hole-duplets between the both sides, and emit enough number of photons; The kind of light emitting diode roughly comprises series such as GaAs, GaN, AlInGaP at present.In addition, at GaAs, GaN, the doping nitrogen-atoms also can change its luminous color in the AlInGaP series.

Simultaneously, compared to traditional incandescent lamp bulb, the power consumption of LED approximately only 1/8th, the life-span is but up to 50 to 100 times.Because LED has light weight, advantages such as volume is little, power consumption is low, long service life, nowadays has many countries all to take up to formulate relevant laws and regulations, with the customized concrete time-histories table that changes the conventional incandescent bulb of eliminating.Putting before this, many new-type LED bulbs just arise gradually.

Yet, compared to traditional incandescent lamp bulb, because LED usually must be by drive integrated circult (DriverIntegrated Circuit; Driver IC) drives, therefore, must be arranged on the circuit board.Moreover, because under the condition of high temperature, the operational paradigm of Driver IC and LED usually can be poor, and damage than being easier to; Therefore, often must come loss heat energy in conjunction with suitable radiating module again, to guarantee that DriverIC and LED are unlikely to operate under too high temperature.Therefore, existing LED bulb all can have circuit board and radiating module usually.

In addition, be unlikely to short circuit in order to ensure circuit board, also can possess between circuit board and tube face usually has a plastic insulating base, insulating base to coat a metal conduction drain pan, to be screwed together in tube face to import electric power.Simultaneously, enter the position at LED and circuit board place, also can be encapsulated usually with the optical package sheet of plastics, acrylic or glass system in order to prevent dust.

Under above-mentioned background, in existing LED bulb, utilize screw usually in conjunction with external modules such as radiating module, insulating base and printing opacity case chips.Yet, on practice utilization aspect, this but three shortcomings of ubiquity of mode that are assembled:

One when being subjected to external impacts or temperature and sharply changing, can make radiating module, insulating base and optical package sheet bear bigger stress or thermal stress.At this moment, in conjunction with metal system screw place, particularly between metal system screw, plastics system insulating base and optical package sheet, can form comparatively obvious stress or thermal stress discontinuity zone, thereby cause the stress concentration phenomenon, and cause wearing out easily or be full of cracks at insulating base or printing opacity case chip in conjunction with the screw place.

Its two because must be in conjunction with a plurality of screws, when making the LED bulb, manufacture craft can be more loaded down with trivial details, and thereby cause the problem that expends assembling man-hour and cost.

Its three because must be,, can become more not attractive in appearance in appearance, and texture can become poor when inconsistent, producing warpage or crooked phenomenon in conjunction with the elasticity of screw in conjunction with screw.

Summary of the invention

Technical problem and purpose that the utility model institute desire solves:

Because the LED bulb that prior art provided, must utilize screw to assemble external module, therefore, because concentrating, stress or thermal stress cause the aging easily or be full of cracks of insulating base or printing opacity case chip easily, expend more assembling man-hour and cost, and problem such as not attractive in appearance and texture is relatively poor.

Edge this, main purpose of the present utility model is to provide a kind of LED bulb, it utilizes from body and screws togather or chimeric mode is come in conjunction with external modules such as radiating module, pedestal, conduction drain pan and printing opacity case chips, to slow down the stress concentration phenomenon, simplify production process, and avoid because of in conjunction with inconsistent warpage that produces of the elasticity of screw or crooked phenomenon.

The technological means that the utility model is dealt with problems:

The utility model is for solving technological means that prior art problems adopted for a kind of light emitting diode (LED) bulb is provided, it is in order to being screwed together in a tube face, and comprises a pedestal, a conduction drain pan, a radiating module, a Lamp cup, a circuit board and an optical package sheet.Pedestal is screwed together in conduction drain pan and radiating module from body respectively; The conduction drain pan is for being screwed together in tube face; Radiating module comprises a heat radiator body and a plurality of radiating fin that extends to external radiation from heat radiator body; Circuit board is provided with a plurality of LED, and Lamp cup is incorporated into radiating module by circuit board, and offers a plurality of perforates; The optical package sheet is embedded in Lamp cup, and possesses a plurality of optical lenses.Above-mentioned a plurality of LED, perforate and optical lens correspond to each other.

The utility model effect against existing technologies:

Compared to existing LED bulb,, and utilize chimeric mode to come in conjunction with the optical package sheet, therefore because LED bulb provided by the utility model utilization is next in conjunction with pedestal, conduction drain pan and radiating module from the mode that body screws togather; The combination of all external modules does not need to use screw, screwed pipe, bolt or screw rod etc. to screw togather media, and the pedestal that can avoid causing because stress is concentrated wears out with the optical package sheet or problem such as be full of cracks.

In addition, owing to utilize from body and screw togather or chimeric mode is come in conjunction with pedestal, conduction drain pan and radiating module; Therefore, can effectively simplify assembly program, to save assembling man-hour and cost; Also therefore, can avoid making the LED bulb possess outward appearance more attractive in appearance and preferable texture because of in conjunction with inconsistent warpage that produces of the elasticity of screw or crooked phenomenon.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.

Description of drawings

Fig. 1 is the primary clustering exploded view of the utility model preferred embodiment;

Fig. 2 is the stereo appearance figure of the utility model preferred embodiment;

Fig. 3 is the stereo appearance figure of the radiating module of the utility model preferred embodiment;

Fig. 4 is the stereo appearance figure of the Lamp cup of the utility model preferred embodiment; And

Fig. 5 is the stereo appearance figure of the optical package sheet of the utility model preferred embodiment.

Wherein, Reference numeral

100 light emitting diodes (LED) bulb

200 tube faces

1 pedestal

11 base bodies

12 first thread segments

13 second thread segments

2 conduction drain pans

21 inner threaded surface

22 external screw thread faces

3 radiating modules

31 heat radiator body

311～313 first positioning screw holes

314 first wire guides

32 radiating fins

321 buckle structures

4 circuit boards

41 circuit board bodies

411～413 second positioning screw holes

414 second wire guides

42～42e LED

5 Lamp cups

51～51e perforate

52～54 location screwed pipes

55～58 fixed hooks

6 optical package sheets

61 printing opacity bodies

62 evagination rings

63～63e optical lens

7 retainer rings

8 conductive seat pipes

81 internal thread segment

The FE fin tips

The specific embodiment

Because light emitting diode bulb provided by the utility model can be widely used in conjunction with various existing tube faces, too numerous to enumerate especially with its combination embodiment, so give unnecessary details no longer one by one, only enumerate one of them preferred embodiment and specified at this.

See also Fig. 1 to Fig. 5, Fig. 1 is the primary clustering exploded view of the utility model preferred embodiment; Fig. 2 is the stereo appearance figure of the utility model preferred embodiment; Fig. 3 is the stereo appearance figure of the radiating module of the utility model preferred embodiment; Fig. 4 is the stereo appearance figure of the Lamp cup of the utility model preferred embodiment; Fig. 5 is the stereo appearance figure of the optical package sheet of the utility model preferred embodiment.As shown in the figure, a light emitting diode (Light Emitting Diode; LED) bulb 100, in order to be screwed together in a tube face 200, to replace traditional incandescent lamp bulb.

LED bulb 100 comprises a pedestal 1, a conduction drain pan 2, a radiating module 3, a circuit board 4, a Lamp cup 5, an optical package sheet 6 and a retainer ring 7.

Pedestal 1 is made by the plastics ejection formation usually, is an approximate tubular structure, and comprises a base body 11, one first thread segment 12 and one second thread segment 13.First thread segment 12 is positioned at the end that base body 11 is adjacent to radiating module 3, and second thread segment 13 is positioned at the other end of base body 11 away from radiating module 3, and the external diameter of second thread segment 13 is less than the external diameter of first thread segment 12.

Conduction drain pan 2 is made by metal material, is an approximate cup-like structure, and comprises an inner threaded surface 21 and an external screw thread face 22.Radiating module 3 comprises a heat radiator body 31 and a plurality of radiating fins 32.Heat radiator body 31 is offered three first positioning screw holes 311,312,313 and one first wire guide 314.Each radiating fin 32 is provided with a buckle structure 321 for to extend to a fin tips FE from heat radiator body 31 to external radiation at fin tips FE place.

Circuit board 4 electrical communication and comprise a circuit board body 41 and six LED42,42a, 42b, 42c, 42d and 42e in conduction drain pan 2.Circuit board body 41 is offered three second positioning screw holes 411,412,413 and one second wire guide 414.Second positioning screw hole 411,412 and 413 corresponds respectively to first positioning screw hole 311,312 and 313.Second wire guide 414 passes through therebetween for lead corresponding to first wire guide 314.

Lamp cup 5 is offered six

perforates

51,51a, 51b, 51c, 51d and 51e, and perforate 51,51a, 51b, 51c, 51d and 51e correspond respectively to LED42,42a, 42b, 42c, 42d and 42e.Simultaneously, Lamp cup 5 also possesses 52,53,54, four fixed

hooks

55,56,57 and 58 of three location screwed pipes.Location screwed

pipe

52,53 and 54 corresponds respectively to second positioning screw hole 411,412 and 413; Apparently, location screwed

pipe

52,53 and 54 also corresponds respectively to first positioning screw hole 311,312 and 313.

Optical package sheet 6 comprises a printing opacity body 61, an evagination ring 62, six

optical lenses

63,63a, 63b, 63c, 63d and 63e.Evagination ring 62 is positioned at the periphery of printing opacity body 61, and

optical lens

63,63a, 63b, 63c, 63d and 63e correspond respectively to perforate 51,51a, 51b, 51c, 51d and 51e.Tube face 200 comprises a conductive seat pipe 8, and conductive seat pipe 8 inside comprise an internal thread segment 81.

When assembled LED bulb 100, must earlier circuit board 4 and Lamp cup 5 intrawares such as grade be incorporated into radiating module 3, at this moment, can will utilize three screws (not indicating) to pass through the location screwed

pipe

52,53 and 54 of Lamp cup 5 respectively in regular turn; Second positioning screw hole 411,412 and 413 of circuit board 4; Be screwed together in first positioning screw hole 311,312 and 313 of radiating module 3 at last; So that circuit board 4 is incorporated into radiating module 3, and make Lamp cup 5 be incorporated into radiating module 3 by circuit board 4.

Then, beginning is in conjunction with external modules such as pedestal 1, conduction drain pan 2, radiating module 3, optical package sheet 6 and retainer rings 7.When making up above-mentioned external module, must make the inner threaded surface 21 of conduction drain pan 2 be screwed together in second thread segment 13, and make radiating module 3 be screwed together in first thread segment 12 of pedestal 1 from body from body.Then, must make fixedly evagination ring 62 of the fixed

hook

55,56,57 of

Lamp cup

5 and 58 button hooks, make optical package sheet 6 be embedded in Lamp cup 5.At last, make retainer ring 7 be socketed in the periphery of Lamp cup 5 and optical package sheet 6,, and utilize the buckle structure 321 of the radiating fin 32 of radiating module 3 ring 7 that is fastened, retainer ring 7 is combined with radiating module 3 with encapsulating optical case chip 6.

Utilize LED bulb 100 to external world environment when illumination is provided, must make the external screw thread face 22 of conduction drain pan 2 be screwed together in the internal thread segment 81 of the conductive seat pipe 8 of tube face 200, make conductive seat pipe 8 by conduction drain pan 2 with circuit board 4 electrical communication.After opening switch, can send electric power to circuit board 4 via conductive seat pipe 8, project illuminating bundle with LED42,42a, 42b, 42c, 42d and the 42e that orders about on the circuit board 4, illuminating bundle can pass 51 respectively, 51a, 51b, 51c, 51d and 51e and be projected to

optical lens

63,63a, 63b, 63c, 63d and 63e, after the effect (as effects such as optically focused, astigmatism, anti-dazzles) via

optical lens

63,63a, 63b, 63c, 63d and 63e, be projected to external environment again so that illumination to be provided.

Such as the technical staff all can understand easily in described technical field, because in the process of assembled LED bulb 100, when external modules such as assembling pedestal 1, conduction drain pan 2, radiating module 3, optical package sheet 6 and retainer ring 7, utilize fully from body screw togather, mode such as chimeric and fastening, therefore not needing to use screw, screwed pipe, bolt or screw rod etc. fully screws togather media.Simultaneously, compared to the mode of using the screw combination, since from the mode that body screws togather can make possess between two connection assemblies bigger in conjunction with contact area, therefore, bearing mechanically stressed or during thermal stress, the problem that can avoid stress to concentrate, and then effectively slow down problem such as the aging or be full of cracks of the fatigability of assembly.

In addition, screw togather or chimeric mode is come in conjunction with pedestal 1, conduction drain pan 2 and radiating module 3, and utilize modes such as chimeric and fastening to combine optical package sheet 6 and retainer ring 7 owing to utilize from body; Therefore, can effectively simplify assembly program, to save assembling man-hour and cost; Also therefore, can and avoid making the LED bulb possess outward appearance more attractive in appearance and preferable texture because of in conjunction with inconsistent warpage that produces of the elasticity of screw or crooked phenomenon.

At last, such as the technical staff all can understand easily in affiliated technical field, described in this article " screwing togather " from body, be general reference one references object by itself being screwed together in the mode of a destination object at (with screw thread or thread) and combining with destination object, do not need to see through screw, screwed pipe, bolt or screw rod etc. fully and screw togather media and combine with destination object.

By above-mentioned the utility model embodiment as can be known, the value on the true tool industry of the utility model.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1, a kind of light emitting diode bulb in order to be screwed together in a tube face, is characterized in that, comprises:

One pedestal;

One conduction drain pan is screwed together in this pedestal from body, and for being screwed together in this tube face;

One radiating module is screwed together in this pedestal from body, and comprises:

One heat radiator body; And

A plurality of radiating fins, each radiating fin extends to a fin tips from this heat radiator body to external radiation;

One circuit board is incorporated into this heat radiator body, and comprises:

One circuit board body; And

A plurality of light emitting diodes are arranged at this circuit board body; And

One Lamp cup by being incorporated into this radiating module in conjunction with this circuit board, and is offered a plurality of perforates corresponding to above-mentioned a plurality of LED;

One optical package sheet is embedded in this Lamp cup, and comprises:

One printing opacity body; And

A plurality of optical lenses are arranged at this printing opacity body corresponding to above-mentioned a plurality of perforates.

2, light emitting diode bulb according to claim 1 is characterized in that, this heat radiator body also offers at least one first positioning screw hole.

3, light emitting diode bulb according to claim 2 is characterized in that, offers second positioning screw hole of at least one correspondence in this first positioning screw hole on the circuit board body.

4, light emitting diode bulb according to claim 3 is characterized in that, this Lamp cup also is provided with the location screwed pipe of at least one correspondence in this first positioning screw hole and this second positioning screw hole.

5, light emitting diode bulb according to claim 1 is characterized in that, also comprises one in order to encapsulate the retainer ring of this optical package sheet.

6, light emitting diode bulb according to claim 5 is characterized in that, this fin tips of each radiating fin also is provided with a buckle structure, and this buckle structure is fastened on this retainer ring.

7, light emitting diode bulb according to claim 1 is characterized in that, the periphery of this optical package sheet also stretches out an evagination ring.

8, light emitting diode bulb according to claim 7 is characterized in that, this Lamp cup also comprises at least one fixed hook, fixes this evagination ring with button hook, makes this optical package sheet be embedded in this Lamp cup.