CN217763104U

CN217763104U - LED bulb

Info

Publication number: CN217763104U
Application number: CN202222183043.0U
Authority: CN
Inventors: 王信春; 钱晓东; 林利民
Original assignee: Red100 Lighting Co ltd
Current assignee: Hongyibai Lighting Co.,Ltd.
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-11-08
Anticipated expiration: 2032-08-18

Abstract

The utility model provides a LED bulb, the lamp holder comprises a lamp holder, annular light source board, the printing opacity cover of a heat dissipation section of thick bamboo in bowl form main part and the thin wall has, the radiator that has outer heat dissipation section of thick bamboo and heat radiation fins, bottom surface center through the main part sets up the round hole, make interior heat dissipation section of thick bamboo wear to establish and crowd tightly in the hole of light source board, the bottom that makes interior heat dissipation section of thick bamboo and the hole of round hole are along even as an organic whole, the top that makes interior heat dissipation section of thick bamboo inlays and establishes in the lamp holder, make outer heat dissipation section of thick bamboo cover establish including on, make outer heat dissipation section of thick bamboo bottom and main part upper end butt, make outer heat dissipation section of thick bamboo upper end and interior heat dissipation section of thick bamboo outer heat dissipation wall lock, can enclose into annular cavity between outer heat dissipation section of thick bamboo and printing opacity cover, the heat that the light source board gived off gets into in the annular cavity, can outwards dispels the heat through outer heat dissipation section of thick bamboo, can inwards dispel the heat through interior heat dissipation section of thick bamboo again, heat dissipation area is big, heat dispersion is good, can be applicable to the scene of small volume, this LED bulb does not need the part, simple structure, convenient assembly, low cost, high stability is good stability.

Description

LED bulb

Technical Field

The utility model relates to an illumination lamps and lanterns technical field, concretely relates to LED bulb.

Background

The LED bulb is a solid-state semiconductor device which can convert electric energy into visible light, can generate a large amount of heat in the conversion process, the bottom surface of the traditional LED bulb is mostly a hole-free whole surface, the design can only be used for heat dissipation through the outer wall surface of the LED bulb, the heat dissipation performance is poor, the LED bulb with small size is relatively small in surface area, the heat dissipation performance is more embarrassing and worried, the power is difficult to increase, and the lighting effect is limited.

In order to solve the problem, the market has appeared that the heat dissipation performance of the LED bulb is enhanced by arranging the internal heat dissipation channel, such as chinese patents CN108167672A, CN102798013A and CN213656348A, but such a scheme needs to additionally add a plurality of components, which leads to a more complex structure of the LED bulb, because the components are more, the components need to be fixed by bolts, glue and the like, the assembly is inconvenient, the cost is high, the probability of the components and the component connection failure is high, and the stability is poor.

Disclosure of Invention

The utility model aims at overcoming prior art's shortcoming, providing a LED bulb that heat dispersion is good, simple structure, equipment are convenient, with low costs, stability is good, be applicable to the high-power scene of little volume.

In order to achieve the above object, the utility model provides a technical scheme is, the LED bulb, include:

a lamp cap;

the LED lamp comprises a lamp holder, a light source board and a lamp body, wherein the lamp holder is arranged on the lamp holder, the lamp holder is arranged on the light source board, and the light source board is connected with the lamp body through a power line;

the light-transmitting cover comprises a bowl-shaped main body and a thin-wall inner heat dissipation cylinder, a round hole is formed in the center of the bottom surface of the main body, the inner heat dissipation cylinder penetrates through and is tightly extruded in an inner hole of the light source plate, the bottom of the inner heat dissipation cylinder is connected with the edge of the round hole into a whole, and the top of the inner heat dissipation cylinder is embedded in the lamp cap;

the radiator comprises an outer radiating cylinder and radiating fins connected to the outer wall of the outer radiating cylinder, the outer radiating cylinder is sleeved on the inner radiating cylinder, the bottom of the outer radiating cylinder is abutted to the upper end of the main body, the upper end of the outer radiating cylinder is buckled with the outer wall of the inner radiating cylinder, and an annular cavity is formed by surrounding the outer radiating cylinder and the light-transmitting cover.

Preferably, the annular cavity is gradually retracted from bottom to top.

Preferably, the bottom of the outer heat dissipation cylinder is provided with a skirt edge extending outwards and horizontally, the lower surface of the skirt edge is attached to the upper surface of the light source plate, and the attachment area is 35% -45% of the area of the upper surface of the light source plate.

Further preferably, the outer edge of the skirt is turned over downwards to form an annular surrounding wall, and the annular surrounding wall is sleeved on the outer wall of the upper end part of the main body and is abutted to an annular flange connected to the outer wall.

Further preferably, the lower surface of the skirt is connected with a ring-shaped clamping groove protruding downwards, and the outer wall of the light source plate is tightly extruded in the ring-shaped clamping groove.

Further preferably, the ring-shaped clamping groove is formed by a plurality of arc-shaped surrounding walls which are arranged at intervals.

Preferably, the outer wall of the upper end of the inner heat dissipation cylinder is provided with a press type reverse buckle, when the outer heat dissipation cylinder is sleeved on the inner heat dissipation cylinder, the reverse buckle abuts against the upper end face of the outer heat dissipation cylinder, so that the outer heat dissipation cylinder is buckled with the inner heat dissipation cylinder, the reverse buckles are at least two, and the two reverse buckles are uniformly distributed along the axial lead of the inner heat dissipation cylinder.

Preferably, the bottom of interior heat dissipation section of thick bamboo is outside open horn mouth form, the upper end outer wall of interior heat dissipation section of thick bamboo is equipped with the step face that inwards contracts outer heat dissipation section of thick bamboo lock is in when on the interior heat dissipation section of thick bamboo, the step face supports tightly the upper end throat of outer heat dissipation section of thick bamboo is used for injecing the extreme position of outer heat dissipation section of thick bamboo downstream.

Further preferably, the interior heat dissipation section of thick bamboo is last to be offered and to be used for wearing to establish the through wires hole of power cord, the through wires hole extends and runs through along upper and lower direction the step face, the inner wall of an outer heat dissipation section of thick bamboo is equipped with the stopper outer heat dissipation section of thick bamboo lock is in when on the interior heat dissipation section of thick bamboo, the stopper is inserted and is established in the through wires hole, be used for injecing the axial rotation of an outer heat dissipation section of thick bamboo.

Further preferably, the heat dissipation fins extend longitudinally, the plurality of heat dissipation fins are uniformly distributed along the axial lead of the outer heat dissipation cylinder, and the outer end surfaces of the heat dissipation fins, which are far away from the outer heat dissipation cylinder, are cambered surfaces with the middle portions recessed inwards.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

Drawings

Fig. 1 is a schematic front view of a preferred embodiment of the present invention.

Fig. 2 is a schematic bottom view of fig. 1.

Fig. 3 and 4 are perspective views of fig. 1 at different viewing angles.

Fig. 5 is an assembled exploded view of fig. 4.

Fig. 6 isbase:Sub>A schematic sectional view in the direction ofbase:Sub>A-base:Sub>A in fig. 1.

Fig. 7 is a schematic sectional view in the direction B-B in fig. 2.

Fig. 8 is a perspective view of the heat sink in fig. 1.

FIG. 9 is a schematic cross-sectional view of the heat sink of FIG. 1.

Wherein: 10. a lamp cap; 11. a power line; 20. a light source plate; 21.LED lamp bead; 22. an inner bore; 23. an outer wall; 30. a light-transmitting cover; 31. a main body; 311. a circular hole; 312. an annular flange; 32. an inner heat-dissipating cylinder; 321. reversing; 322. a step surface; 323. threading holes; 40. a heat sink; 41. an outer heat-dissipating cartridge; 411. a skirt edge; 412. an annular surrounding wall; 413. an annular clamp groove; 414. an arc-shaped surrounding wall; 415. necking; 416. a limiting block; 42. a heat dissipating fin; 43. an annular cavity.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to fig. 9, the utility model provides a LED bulb, include: the LED lamp comprises a lamp holder 10, a light source plate 20, a light-transmitting cover 30 and a heat radiating body 40, wherein the lamp holder 10 uses standard lamp holders such as E26/E27 or E39/E40, and the lamp holder is very convenient to rotate and apply; the LED light source comprises a light source board 20 and a plurality of LED lamp beads 21, wherein the light source board 20 is annular, an aluminum plate with the heat conductivity of 1.0W/(m.K) is used as a substrate of the light source board 20, after an insulating layer is arranged, a control module (not shown in the figure) and the LED lamp beads 21 are arranged on the lower surface of the light source board 20 through a Surface Mount Technology (SMT), the LED lamp beads 21 are high-light-efficiency LED lamp beads, the light efficiency of the LED lamp beads 21 reaches 150LM/W, the LED lamp beads are more than 70% energy-saving compared with a traditional incandescent lamp, the service life of the LED lamp beads is more than 30000 hours and more than ten times of the service life of the traditional incandescent lamp, the LED lamp beads 21 are uniformly distributed along the axial lead of the light source board 20, and a control module on the light source board 20 is communicated with a lamp cap 10 through a power cord 11; the light-transmitting cover 30 is formed by integrally injecting PC or modified PP materials with high light transmittance, the light transmittance reaches 91% -96%, the light-transmitting cover 30 comprises a bowl-shaped main body 31 and a thin-wall inner heat-radiating cylinder 32, a round hole 311 is formed in the center of the bottom surface of the main body 31, the inner heat-radiating cylinder 32 penetrates through and is tightly extruded in an inner hole 22 of the light source plate 20, the bottom of the inner heat-radiating cylinder 32 is connected with the hole edge of the round hole 311 into a whole, and the top of the inner heat-radiating cylinder 32 is embedded in the lamp cap 10; the heat dissipation body 40 is a die-casting aluminum heat dissipation device with heat conductivity of 100W/(m.K), the heat dissipation efficiency is high, the weight is light, the heat dissipation body 40 comprises an outer heat dissipation cylinder 41 and heat dissipation fins 42 connected to the outer wall of the outer heat dissipation cylinder 41, the outer heat dissipation cylinder 41 is sleeved on the inner heat dissipation cylinder 32, the bottom of the outer heat dissipation cylinder 41 is abutted to the upper end of the main body 31, the upper end of the outer heat dissipation cylinder 41 is buckled with the outer wall of the inner heat dissipation cylinder 32, and an annular cavity 43 is formed between the outer heat dissipation cylinder 41 and the light-transmitting cover 30.

The advantage that sets up like this lies in, can enclose into annular cavity between outer heat dissipation section of thick bamboo and printing opacity cover, the heat that the light source board gived off gets into in the annular cavity, can enough dispel the heat outwards through outer heat dissipation section of thick bamboo, can inwards dispel the heat through interior heat dissipation section of thick bamboo again, the heat radiating area is big, heat dispersion is good, can be applicable to the powerful scene of small volume, little volume means that the whole height of this LED lamp is steerable below 150mm, the diameter is steerable below 130mm, in this patent, this height (including the lamp holder) is 147.5mm, the diameter is 128mm, high-power means that the power of this LED lamp can be up to 80W, this LED bulb need not add the part, only by the lamp holder, the light source board, the printing opacity cover, the radiator constitutes, moreover, the steam generator is simple in structure, the equipment is convenient, material cost and constitution are originally low, the part is few, the part is connected fewly, the probability of breaking down, good stability.

In the present embodiment, the annular cavity 43 is gradually retracted from bottom to top, and the retraction is mainly formed by the outer heat-dissipating cylinder 41 with the inner diameter decreasing from bottom to top, so that the heat-dissipating efficiency can be enhanced.

In this embodiment, the bottom of the outer heat sink 41 is provided with a skirt 411 extending horizontally outward, the lower surface of the skirt 411 is attached to the upper surface of the light source board 20, and the attachment area is 35% -45% of the area of the upper surface of the light source board 20, so that the efficiency of heat transfer from the light source board 20 to the outer heat sink 41 can be enhanced, and a sufficient area can be left on the light source board 20 for mounting electronic components.

In this embodiment, the outer edge of the skirt 411 is folded downward to form an annular wall 412, and the annular wall 412 is sleeved on the outer wall of the upper end of the main body 31 and is abutted against the annular flange 312 connected to the outer wall 31, so that the appearance can be maintained, the sealing effect can be enhanced, and light leakage can be prevented.

In this embodiment, the lower surface of the skirt 411 is connected with a downward protruding ring-shaped clamping groove 413, and the inner diameter of the ring-shaped clamping groove 413 is smaller than the outer diameter of the light source plate 20 by 0.1-0.15mm, so that the outer wall 23 of the light source plate 20 can be tightly squeezed in the ring-shaped clamping groove 413 through interference fit, and the light source plate and the heat sink 40 form a whole body, which is convenient for assembly; specifically, the ring slot 413 is formed by arc-shaped surrounding walls 414 arranged at intervals in multiple sections, so that the ring slot 413 can be conveniently detached, and the deformation phenomenon of the light source board 20 and/or the ring slot 413 caused by different thermal expansion rates of the light source board 20 and the ring slot 413 can be avoided.

In this embodiment, the outer wall of the upper end of the inner heat dissipating cylinder 32 is provided with a press type inverted buckle 321, the press type inverted buckle 321 is capable of being flush with the outer wall of the inner heat dissipating cylinder 32 or retracting into the outer wall of the inner heat dissipating cylinder 32 by pressing, and the inverted buckle can be automatically restored under the action of elastic force, so that the disassembly is convenient, when the outer heat dissipating cylinder 41 is sleeved on the inner heat dissipating cylinder 32, the inverted buckle 321 abuts against the upper end surface of the outer heat dissipating cylinder 41, so that the outer heat dissipating cylinder 41 is buckled with the inner heat dissipating cylinder 32, at least two inverted buckles 321 are provided, the two inverted buckles 321 are uniformly distributed along the axial lead of the inner heat dissipating cylinder 32, and the stability during buckling can be enhanced.

In this embodiment, the bottom of the inner heat dissipating cylinder 32 is in a flared shape which opens outward, the outer wall of the upper end of the inner heat dissipating cylinder 32 is provided with a step surface 322 which contracts inward, and when the outer heat dissipating cylinder 41 is fastened on the inner heat dissipating cylinder 32, the step surface 322 abuts against the upper end necking 415 of the outer heat dissipating cylinder 41 to limit the limit position of downward movement of the outer heat dissipating cylinder 41; simultaneously, offer the through wires hole 323 that is used for wearing to establish power cord 11 on the interior heat dissipation section of thick bamboo 32, through wires hole 323 extends and runs through step 322 along upper and lower direction, the inner wall of outer heat dissipation section of thick bamboo 41 is equipped with stopper 416, when on heat dissipation section of thick bamboo 32 including the lock of outer heat dissipation section of thick bamboo 41, stopper 416 is inserted and is established in through wires hole 323, an axial rotation for prescribing a limit to outer heat dissipation section of thick bamboo 41, the setting can enough ensure the lock effect of outer heat dissipation section of thick bamboo 41 and interior heat dissipation section of thick bamboo 32 like this, can communicate annular cavity 43 and be located the inside cavity of interior heat dissipation section of thick bamboo 32 through wires hole 323 again, realize some convection heat dissipation.

In the present embodiment, the heat dissipation fins 42 extend longitudinally, the plurality of heat dissipation fins 42 are uniformly distributed along the axial line of the outer heat dissipation cylinder 41, and the end surface of the heat dissipation fin 42 away from the outer heat dissipation cylinder 41 is an arc surface with a concave middle portion, so as to further improve the heat dissipation performance.

The utility model discloses still provide the method of assembling of this LED bulb, including following step:

s1, producing a light source plate and welding and connecting the light source plate and one end of a power line;

s2, pressing the light source plate in the annular clamping groove of the skirt edge of the heat radiator in an interference fit manner, so that the joint area of the upper surface of the light source plate and the lower surface of the skirt edge of the heat radiator accounts for 35-45% of the total area of the upper surface of the light source plate;

s3, preliminarily inserting the inner heat dissipation cylinder of the light-transmitting cover into the outer heat dissipation cylinder, and leading the other end of the power line out upwards through a threading hole in the inner heat dissipation cylinder of the light-transmitting cover;

s4, completely inserting the inner heat dissipation cylinder into the outer heat dissipation cylinder to enable the inner heat dissipation cylinder and the outer heat dissipation cylinder to be buckled;

s5, riveting the end part of the power line led out upwards to the lamp holder;

and S6, inserting the upper end part of the inner heat dissipation cylinder into the lamp holder and pressing the upper end part of the inner heat dissipation cylinder to connect the lamp holder with the light-transmitting cover to complete assembly.

It should be noted that, in the present invention, the uniform distribution means the distribution in an annular array, and the power line is a hard line.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An LED bulb, comprising:

a lamp cap;

the radiator comprises an outer radiating cylinder and radiating fins connected to the outer wall of the outer radiating cylinder, the outer radiating cylinder is sleeved on the inner radiating cylinder, the bottom of the outer radiating cylinder is abutted to the upper end of the main body, the upper end of the outer radiating cylinder is buckled with the outer wall of the inner radiating cylinder, and an annular cavity is formed between the outer radiating cylinder and the light-transmitting cover in a surrounding mode.

2. The LED bulb of claim 1, wherein: the annular cavity is gradually retracted from bottom to top.

3. The LED bulb of claim 1, wherein: the bottom of outer heat dissipation section of thick bamboo is equipped with outside horizontal extension's shirt rim, the lower surface of shirt rim with the upper surface of light source board is laminated mutually, and the laminating area is 35% -45% of light source board upper surface area.

4. The LED bulb of claim 3, wherein: the outer edge of the skirt edge is turned downwards to form an annular surrounding wall, and the annular surrounding wall is sleeved on the outer wall of the upper end part of the main body and is abutted to an annular flange connected to the outer wall.

5. The LED bulb of claim 3, wherein: the lower surface of the skirt edge is connected with a downward convex annular clamping groove, and the outer wall of the light source plate is tightly extruded in the annular clamping groove.

6. The LED bulb of claim 5, wherein: the ring-shaped clamping groove is formed by a plurality of sections of arc-shaped surrounding walls which are arranged at intervals.

7. The LED bulb of claim 1, wherein: the outer wall of the upper end of the inner heat dissipation cylinder is provided with a press type reverse buckle, when the outer heat dissipation cylinder is sleeved on the inner heat dissipation cylinder, the reverse buckle abuts against the upper end face of the outer heat dissipation cylinder, so that the outer heat dissipation cylinder is buckled with the inner heat dissipation cylinder, the reverse buckle is at least two, and the two reverse buckles are uniformly distributed along the axial lead of the inner heat dissipation cylinder.

8. The LED light bulb of claim 1, wherein: the bottom of interior heat dissipation section of thick bamboo is outside open horn mouth form, the upper end outer wall of interior heat dissipation section of thick bamboo is equipped with the step face that inwards contracts outer heat dissipation section of thick bamboo lock is in when on the interior heat dissipation section of thick bamboo, the step face supports tightly the upper end throat of outer heat dissipation section of thick bamboo is used for injecing outer heat dissipation section of thick bamboo extreme position that moves down.

9. The LED bulb of claim 8, wherein: offer on the interior heat dissipation section of thick bamboo and be used for wearing to establish the through wires hole of power cord, the through wires hole extends and runs through along upper and lower direction the step face, the inner wall of an outer heat dissipation section of thick bamboo is equipped with the stopper a lock of an outer heat dissipation section of thick bamboo is in during on the interior heat dissipation section of thick bamboo, the stopper is inserted and is established in the through wires hole, be used for injecing the axial rotation of an outer heat dissipation section of thick bamboo.

10. The LED bulb of any one of claims 1 to 9, wherein: the radiating fins extend longitudinally, the plurality of radiating fins are uniformly distributed along the axial lead of the outer radiating cylinder, and the outer end faces, far away from the outer radiating cylinder, of the radiating fins are cambered surfaces with the middle portions concaved inwards.