CN104763882B

CN104763882B - LED lamp with large light-emitting angle

Info

Publication number: CN104763882B
Application number: CN201510059621.1A
Authority: CN
Inventors: 关崇安
Original assignee: Ad Toyo Lighting Guangzhou Co ltd
Current assignee: Ad Toyo Lighting Guangzhou Co ltd
Priority date: 2015-02-04
Filing date: 2015-02-04
Publication date: 2023-01-13
Anticipated expiration: 2035-02-04
Also published as: CN104763882A

Abstract

The invention provides an LED lamp with a large light-emitting angle, which comprises a conductor, a heat-radiating lamp body, an electrical assembly, a heat-conducting columnar body, a flexible light source plate and a lampshade, wherein the heat-conducting columnar body is arranged on the conductor; the conductor is arranged at the end part of the radiating lamp body; the heat-conducting cylindrical body is connected with the heat-radiating lamp body; the electric component is arranged in the radiating lamp body and is electrically connected with the electric conductor; the flexible light source plate is covered on the surface of the heat-conducting cylindrical body, LED luminous particles and an electrical contact are arranged on the surface of the flexible light source plate, and the flexible light source plate is electrically connected with the electrical assembly through the electrical contact; the lampshade is connected with the heat dissipation lamp body and is covered outside the heat conduction columnar body. The invention can realize illumination with a large light-emitting angle of more than 180 degrees.

Description

LED lamp with large light-emitting angle

Technical Field

The invention relates to the field of energy-saving illumination, in particular to an LED lamp with a large light-emitting angle.

Background

With the continuous development of science and technology, LED lamps gradually enter the market to replace traditional tungsten filament bulbs and incandescent bulbs, and become lighting devices widely used by people.

The LED lamp has the advantages of environmental protection, energy saving, durability and sufficient illumination brightness, but the light-emitting angle of the LED lamp on the current market is small, and light can be intensively illuminated only towards a certain light-emitting direction. The LED lamp is generally arranged with the lampshade facing downwards and emitting light downwards. However, the LED lamp of some light fixtures needs to be installed with its cover facing upward, such as wall lamps, some ceiling lamps, etc., in which case the conventional LED lamp cannot be used. The narrow light exit angle thus creates a large obstacle to the application of LED lamps.

In addition, in the prior art, the mounting structure of the LED lamp product is complex, and more assembling structures such as bolt connection, wire welding and the like exist, so that the complexity of the assembling process is greatly improved. The complex assembly structure is not beneficial to assembly production, the assembly difficulty is improved, and the production efficiency and the qualification rate of product assembly are reduced. Therefore, the overall production cost of the product is further improved, the market competitiveness of the product is reduced, and the popularization of the LED lamp product is hindered.

It is obvious that the prior art has certain defects.

Disclosure of Invention

The invention aims to solve the technical problem of providing an LED lamp with a large light-emitting angle, and realizes illumination with a large light-emitting angle.

In order to realize the purpose, the invention adopts the following technical scheme:

a large light-emitting angle LED lamp comprises a conductor, a heat-radiating lamp body, an electrical component, a heat-conducting columnar body, a flexible light source plate and a lampshade; the conductor is arranged at the end part of the radiating lamp body; the heat-conducting cylindrical body is connected with the heat-radiating lamp body; the electric component is arranged in the heat dissipation lamp body and is electrically connected with the electric conductor; the flexible light source plate is covered on the surface of the heat-conducting cylindrical body, LED luminous particles and an electrical contact are arranged on the surface of the flexible light source plate, and the flexible light source plate is electrically connected with the electrical assembly through the electrical contact; the lampshade is connected with the heat dissipation lamp body and is covered outside the heat conduction columnar body.

Furthermore, the heat-conducting columnar body comprises a hollow prismatic columnar body, one end of the columnar body, which is back to the heat-radiating lamp body, is provided with a pyramidal conical head part, one end of the columnar body, which faces the heat-radiating lamp body, is provided with a transition part extending in a conical surface manner, the end part of the transition part is provided with a skirt part, and two sides of the transition part are oppositely provided with two first hollow parts; the heat-conducting cylindrical body is connected with the heat-radiating lamp body through the skirt part.

Further, the heat dissipation lamp body comprises an insulating shell and a heat conduction inner wall; the heat conducting inner wall is tightly attached to the inner wall of the insulating shell, and the skirt part of the heat conducting cylindrical body is pressed in the heat conducting inner wall.

Furthermore, fourth buckling teeth are uniformly distributed on one end, back to the electric conductor, of the insulating shell along the circumference; the lamp shade is provided with a clamping groove extending along the circumferential direction, and the fourth clamping teeth of the insulating shell are buckled on the clamping groove of the lamp shade.

Further, the electrical assembly comprises an electrical plate, an electrical connection sheet and a plastic snap cap; first buckling teeth are arranged on two sides of the plastic buckling cap, an abdomen is arranged in the middle of the plastic buckling cap, a U-shaped groove is reserved between the abdomen and the edge of the plastic buckling cap, and second buckling teeth are arranged on the bottom edge of the U-shaped groove; two sides of the bottom end of the electric plate are respectively provided with an electric contact for connecting a positive electrode and a negative electrode, the middle part of the bottom end of the electric plate is provided with a second hollow, the electric plate is inserted into the bottom edge of the U-shaped groove of the plastic buckle cap, and the second buckle tooth is buckled in the second hollow of the electric plate; the electric connecting sheet is arc-shaped, the connecting end of the electric connecting sheet is electrically connected with the electric contact of the electric plate, and the cantilever end of the electric connecting sheet penetrates through the first hollow of the heat-conducting cylindrical body to be electrically connected with the electric contact of the flexible light source plate; the connecting end of the electric connecting sheet is L-shaped and is inserted in the bent parts at the two sides of the U-shaped groove.

Furthermore, a third hollow is arranged at the connecting end of the electric connecting sheet, third buckling teeth are arranged on two sides of the abdomen of the plastic buckling cap, and the third buckling teeth of the plastic buckling cap are buckled in the third hollow of the electric connecting sheet.

Further, the electric conductor comprises an electric conduction outer sleeve, an electric conduction pressure nail and an insulating cap; the conductive outer sleeve is in a cap shape, threads are arranged on the surface of the conductive outer sleeve, and the conductive outer sleeve is riveted and pressed on the end part of the radiating lamp body; the insulating cap is fixed on the top of the conductive outer sleeve and provided with a central hole; the conductive pressing nail penetrates through the center hole of the insulating cap and is fixed on the insulating cap; the conductive pressing nail and the conductive outer sleeve are respectively electrically connected with the two electric connection sheets through the electric board.

Furthermore, heat-conducting glue is coated between the flexible light source plate and the heat-conducting columnar body.

The LED lamp with the large light-emitting angle provided by the invention has the following advantages:

the light-emitting angle is large, the light-emitting angle is larger than 180 degrees, the coverage range of light illumination is wider, and the LED light-emitting module can be applied to more different illumination devices and better meets the illumination requirements of different environments;

the interior of the box body adopts a buckle type assembly structure, so that the assembly difficulty is greatly reduced, and the production and assembly efficiency is improved;

the production period is reduced, the mass production is easy, and the production cost is greatly saved;

the qualification rate of product assembly is improved, and the product has higher market competitiveness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of an LED lamp with a large light-emitting angle according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a conductive pillar.

Fig. 3 is a schematic structural diagram of an electrical assembly.

Fig. 4 is a schematic structural view of a plastic snap cap.

Fig. 5 is a schematic structural view of the conductor.

Description of reference numerals:

1. conductor 2 and radiating lamp body

3. Electrical component 4 and heat-conducting columnar body

5. Lampshade 6, insulating housing

7. Heat conduction inner wall 8, fourth buckle tooth

9. Clamping groove 10 and columnar body

11. Conical head portion 12, transition portion

13. Skirt 14, first hollow

15. First buckle tooth 16 and electric board

17. Plastic snap cap 18, electric connection sheet

19. The second hollow 20 and the third hollow

21. Second and

third snap teeth

22 and 22

23. Conductive outer sleeve 24 and insulating cap

25. Conductive pressure nail 26 and flexible light source plate

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1 and fig. 2, the present embodiment discloses an LED lamp with a large light-emitting angle, which includes a conductive body 1, a heat-dissipating lamp body 2, an electrical component 3, a heat-conducting pillar 4, a flexible light source plate 26, and a lamp shade 5; the conductor 1 is arranged at the end part of the heat radiation lamp body 2; the heat-conducting columnar body 4 is connected with the heat-radiating lamp body 2; the electric component 3 is arranged inside the heat dissipation lamp body 2, and the electric component 3 is electrically connected with the electric conductor 1; the flexible light source plate 26 covers the surface of the heat conducting columnar body 4, the surface of the flexible light source plate 26 is provided with LED luminous particles and an electrical contact, and the flexible light source plate 26 is electrically connected with the electrical component 3 through the electrical contact; the lampshade 5 is connected with the heat dissipation lamp body 2 and is covered outside the heat conduction columnar body 4.

The LED lamp in the prior art adopts a planar light source plate, LED luminous particles are arranged on the surface of the light source plate, and the structure is single. The light-emitting angle of the LED lamp is small and theoretically does not exceed 180 degrees, and the radial illumination brightness cannot meet the requirement in practical application, so that the actual light-emitting angle of the LED lamp is lower than 180 degrees. The lighting range of such LED lamps is very limited and the lampshade 5 must face downwards when installed, although such LED lamps can still meet general lighting requirements, if some special light fixtures are such as: wall lamps, certain ceiling lamps and the like need to be installed with the lamp shade 5 upward, so that the light-emitting angle of the LED lamp is too narrow, light rays are irradiated to the ceiling, and the scattering range of the light rays cannot meet the illumination requirement.

The present invention adopts the design of the heat-conducting cylindrical body 4, and the LED light-emitting particles on the flexible light source plate 26 covering the surface of the heat-conducting cylindrical body 4 are arranged around the heat-conducting cylindrical body 4 and emit light in the radial direction. And the light emitting of each LED luminous particle also has a certain light emitting angle, and the light is scattered at the certain light emitting angle, so that the integral light emitting angle of the LED lamp product is larger than 180 degrees, and the backward light emitting of the LED lamp product can be considered. Therefore, the LED lamp product can be applied to special occasions, such as the ceiling lamp, and the lighting requirement of normal home can be met.

Preferably, the heat-conducting cylindrical body 4 includes a cylindrical body 10 in a hollow prism shape, one end of the cylindrical body 10, which faces away from the heat-dissipating lamp body 2, is provided with a pyramidal cone head 11, one end of the cylindrical body 10, which faces towards the heat-dissipating lamp body 2, is provided with a transition part 12 extending in a conical surface, an end of the transition part 12 is provided with a skirt part 13, and two sides of the transition part 12 are oppositely provided with two first hollow parts 14; the heat conductive pillar 4 is connected to the heat radiation lamp body 2 through the skirt portion 13.

The flexible light source plate 26 can be flexibly bent and deformed, so that the surfaces of the columnar body 10 and the tapered head 11 of the heat conductive columnar body 4 can be completely attached, and the LED light-emitting particles are also closely attached to the prismatic surfaces of the columnar body 10 and the tapered surfaces of the tapered head 11. The LED luminous particles distributed on each conical surface of the conical head part 11 can scatter light rays in the axial direction, and are mainly applied to the light outgoing of the whole LED lamp in the axial direction; the LED light-emitting particles distributed on each prismatic surface of the cylindrical body 10 can scatter light in the radial direction, and also give consideration to light emission in the back-up direction.

Preferably, the columnar body 10 of the heat-conducting columnar body 4 is a hollow hexagonal prism, and the conical head 11 is a hexagonal pyramid; a flexible light source sheet 26 overlies the hexagonal prism and hexagonal pyramid surfaces. From the uniformity of light scattering, the more cylindrical surfaces of the cylinder body 10 are theoretically advantageous. However, the flexible light source plate 26 is preferably attached to a flat surface, so that the attachment tightness between the flexible light source plate 26 and the columnar body 10 can be effectively ensured. And the cylindrical body 10 is preferably capable of providing a sufficiently large cylindrical surface area for thermal conduction. At the same time, the overall bending of the flexible light source plate 26 can also be reduced. Considering the problems of light scattering and component adhesion, the columnar body 10 is preferably a hollow hexagonal prism, and the corresponding cone head 11 is also a hexagonal pyramid.

Preferably, the heat dissipation lamp body 2 comprises an insulating shell 6 and a heat conduction inner wall 7; the heat conducting inner wall 7 is closely attached to the inner wall of the insulating shell 6, and the skirt part 13 of the heat conducting cylindrical body 4 is pressed in the heat conducting inner wall 7.

The heat-conducting cylindrical body 4 also has an important function of transferring heat generated by the LED luminous particles in the luminous lighting, so as to achieve the purpose of heat dissipation. The service life of the LED luminous particles is easily influenced by high heat generated when the LED luminous particles emit light, and even the LED luminous particles are burnt out, so that the working reliability of the LED lamp product is influenced. The normal work of the LED lamp is based on good heat dissipation. The heat emitted by the LED light-emitting particles is rapidly transferred to the heat-conducting cylindrical body 4, the heat-conducting cylindrical body 4 has good heat-conducting property, and the heat is rapidly transferred to the heat-dissipating lamp body 2. The heat-conducting inner wall 7 of the heat-radiating lamp body 2 is tightly attached to the heat-conducting columnar body 4, heat can be transferred between the heat-conducting inner wall 7 and the heat-conducting columnar body, and the heat is dissipated to the outside through the insulating shell 6 after being transferred to the heat-conducting inner wall 7, so that a good heat-radiating effect is achieved. The insulating housing 6 also has the functions of product beautification and insulation, and prevents electric shock hazard.

The heat conduction inner wall 7 is in interference fit with the skirt part 13 of the heat conduction cylindrical body 4, so that the heat conduction inner wall 7 is tightly connected with the skirt part 13 of the heat conduction cylindrical body 4 after being pressed. On one hand, the firmness of connection of the two is ensured, on the other hand, the two can be ensured to be fully contacted, and a better heat conduction effect is achieved.

In order to further improve the heat conduction effect, a heat conduction glue is preferably coated between the flexible light source plate 26 and the heat conduction column 4.

Preferably, fourth buckling teeth 8 are uniformly distributed on one end of the insulating shell 6, which is back to the conductor 1, along the circumference; the lampshade 5 is provided with a clamping groove 9 extending along the circumferential direction, and a fourth clamping tooth 8 of the insulating shell 6 is buckled on the clamping groove 9 of the lampshade 5. The connection between the lampshade 5 and the heat dissipation lamp body 2 also adopts a buckle type assembly structure, after all parts in the LED lamp product are assembled, the lampshade 5 covers the heat conduction column-shaped body 4, and the buckling assembly is completed through the matching of the fourth buckling teeth 8 and the clamping grooves 9. In order to improve the installation quality of the product, as an improvement, a sealant can be coated between the lampshade 5 and the heat dissipation lamp body 2 for sealing.

Preferably, the electrical assembly 3 comprises an electrical panel 16, an electrical connection sheet 18 and a plastic snap cap 17; first buckling teeth 15 are arranged on two sides of the plastic buckling cap 17, an abdomen is arranged in the middle of the plastic buckling cap 17, a U-shaped groove is reserved between the abdomen and the edge of the plastic buckling cap 17, and second buckling teeth 21 are arranged on the bottom edge of the U-shaped groove; two sides of the bottom end of the electric board 16 are respectively provided with an electric contact for connecting a positive electrode and a negative electrode, the middle part of the bottom end of the electric board 16 is provided with a second hollow 19, the electric board 16 is inserted into the bottom edge of the U-shaped groove of the plastic buckling cap 17, and a second buckling tooth 21 is buckled in the second hollow 19 of the electric board 16; the electric connecting sheet 18 is arc-shaped, the connecting end of the electric connecting sheet 18 is electrically connected with the electric contact of the electric plate 16, and the cantilever end of the electric connecting sheet 18 penetrates through the first hollow 14 of the heat-conducting cylindrical body 4 to be electrically connected with the electric contact of the flexible light source plate 26; the connecting end of the electrical connecting sheet 18 is L-shaped and is inserted into the two bending parts of the U-shaped groove.

The plastic snap cap 17 is a core component of the electrical component 3, is a core assembly component for connecting the electrical board 16 and the electrical connection sheet 18, and is also a core connection component for integrally snapping the electrical component 3 to the heat conductive pillar 4. The plastic snap cap 17 is easy to form, is formed in batches by injection molding of a mold, has low cost and elasticity, and is a preferred material for manufacturing the snap structure. In addition to the first fastening teeth 15 on both sides of the plastic fastening cap 17, the bottom edge of the U-shaped groove of the plastic fastening cap 17 is further provided with second fastening teeth 21, which are matched with the second hollow 19 in the middle of the bottom end of the electrical board 16 for fastening and fixing the electrical board 16, so that the electrical board 16 is fixed on the plastic fastening cap 17. The electrical board 16 is used to convert the incoming electrical power into suitable voltage and power for illumination by the LED light emitting particles on the flexible light source board 26. The electrical board 16 is also very simple to install, and only the bottom end of the electrical board 16 needs to be inserted into the bottom edge of the U-shaped groove of the plastic snap cap 17, and the second snap tooth 21 is fastened with the second hollow 19 in the process of insertion, so as to fix the electrical board 16.

Preferably, the connecting end of the electrical connecting piece 18 is provided with a third hollow 20, the two sides of the abdomen of the plastic snap cap 17 are provided with third snap teeth 22, and the third snap teeth 22 of the plastic snap cap 17 are snapped in the third hollow 20 of the electrical connecting piece 18.

The electrical connection sheet 18 has elasticity, and can pass through the first hollow 14 of the thermal conductive column 4 to clamp the surface of the flexible light source plate 26 during installation, and is electrically connected with the electrical contact on the flexible light source plate 26, so as to conduct the flexible light source plate 26. The third hollow 20 of the electrical connection sheet 18 is matched with the third buckling tooth 22 of the plastic buckling cap 17, so that the electrical connection sheet 18 can be buckled and fixed together when being inserted on the plastic buckling cap 17. Therefore, the plastic snap cap 17 connects and fixes the electric connecting sheet 18 and the electric board 16 into a whole through a snap structure to form the electric assembly 3.

Preferably, the electric conductor 1 comprises an electric conduction outer sleeve 23, an electric conduction pressure nail 25 and an insulating cap 24; the conductive outer sleeve 23 is in a cap shape, threads are arranged on the surface of the conductive outer sleeve 23, and the conductive outer sleeve 23 is riveted at the end part of the heat dissipation lamp body 2; the insulating cap 24 is fixed on the top of the conductive outer sleeve 23, and the insulating cap 24 is provided with a central hole; the conductive pressing nail 25 is fixed on the insulating cap 24 through the central hole of the insulating cap 24; the conductive pressing nail 25 and the conductive outer sleeve 23 are electrically connected with the two electric connection sheets 18 respectively through the electric board 16.

The electric conductor 1 is used for being connected with a lamp holder on the lighting device and connecting commercial power into an LED lamp product to form a complete circuit for lighting. The conductive outer sleeve 23 and the conductive pressing nail 25 are separated by an insulating cap 24, so that the conductive outer sleeve 23 and the conductive pressing nail 25 are not conducted with each other, and the conductive outer sleeve 23 and the conductive pressing nail 25 are respectively used as two poles of a circuit. The whole structure of the conductor 1 is matched with a common lamp holder in the market, so that the LED lamp product has extremely strong universality and can completely replace a common tungsten filament bulb or an incandescent bulb. Therefore, the product has market competitiveness and can be comprehensively popularized on the market.

The LED lamp with the large light-emitting angle can perfectly realize the large light-emitting angle exceeding 180 degrees, can give consideration to back light emission, can be applied to more different lighting devices, and can better meet the lighting requirements of different environments. The inside package assembly that adopts the buckle formula of product replaces traditional bolted connection structure, and the greatly reduced equipment degree of difficulty improves production packaging efficiency to production cycle has been reduced, manufacturing cost has been saved greatly. Simultaneously, neotype buckle formula package assembly can improve the qualification rate of product equipment, makes the product have more market competition.

The above-mentioned embodiment only expresses one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. The utility model provides a big light-emitting angle LED lamp which characterized in that: the LED lamp comprises a conductor, a heat dissipation lamp body, an electric assembly, a heat conduction columnar body, a flexible light source plate and a lampshade; the conductor is arranged at the end part of the radiating lamp body; the heat-conducting cylindrical body is connected with the heat-radiating lamp body; the electric component is arranged in the radiating lamp body and is electrically connected with the electric conductor; the flexible light source plate is covered on the surface of the heat-conducting cylindrical body, LED luminous particles and an electrical contact are arranged on the surface of the flexible light source plate, and the flexible light source plate is electrically connected with the electrical assembly through the electrical contact; the lampshade is connected with the radiating lamp body and is covered outside the heat-conducting columnar body;

the heat-conducting columnar body comprises a hollow prismatic columnar body, a pyramid-shaped conical head part is arranged at one end of the columnar body, which is back to the heat-radiating lamp body, a transition part extending in a conical surface is arranged at one end of the columnar body, which faces the heat-radiating lamp body, a skirt part is arranged at the end part of the transition part, and two first hollows are oppositely arranged at two sides of the transition part; the heat-conducting cylindrical body is connected with the heat-radiating lamp body through the skirt part;

the electrical assembly comprises an electrical plate, an electrical connection sheet and a plastic buckle cap; first buckling teeth are arranged on two sides of the plastic buckling cap, an abdomen is arranged in the middle of the plastic buckling cap, a U-shaped groove is reserved between the abdomen and the edge of the plastic buckling cap, and second buckling teeth are arranged on the bottom edge of the U-shaped groove; two sides of the bottom end of the electric plate are respectively provided with an electric contact for connecting the positive electrode and the negative electrode, the middle part of the bottom end of the electric plate is provided with a second hollow, the electric plate is inserted into the bottom edge of the U-shaped groove of the plastic buckle cap, and the second buckle tooth is buckled in the second hollow of the electric plate; the electric connection piece is arc-shaped, the connection end of the electric connection piece is electrically connected with the electric contact of the electric plate, and the cantilever end of the electric connection piece penetrates through the first hollow of the heat-conducting cylindrical body to be electrically connected with the electric contact of the flexible light source plate; the connecting end of the electric connecting sheet is L-shaped and is inserted into the bent parts at the two sides of the U-shaped groove.

2. The large light-exit angle LED lamp of claim 1, wherein: the heat dissipation lamp body comprises an insulating shell and a heat conduction inner wall; the heat conducting inner wall is closely attached to the inner wall of the insulating shell, and the skirt part of the heat conducting cylindrical body is press-mounted in the heat conducting inner wall.

3. The large light-exit angle LED lamp of claim 2, wherein: one end of the insulating shell, which is back to the electric conductor, is uniformly provided with fourth buckling teeth along the circumference; the lamp shade is provided with a clamping groove extending along the circumferential direction, and the fourth buckling teeth of the insulating shell are buckled on the clamping groove of the lamp shade.

4. The large light-exit-angle LED lamp of claim 1, wherein: the connecting end of the electric connecting piece is provided with a third hollow, the two sides of the abdomen of the plastic buckling cap are provided with third buckling teeth, and the third buckling teeth of the plastic buckling cap are buckled in the third hollow of the electric connecting piece.

5. The large light-exit-angle LED lamp of claim 1, wherein: the electric conductor comprises an electric conduction outer sleeve, an electric conduction pressure nail and an insulating cap; the conductive outer sleeve is in a cap shape, threads are arranged on the surface of the conductive outer sleeve, and the conductive outer sleeve is riveted and pressed on the end part of the heat dissipation lamp body; the insulating cap is fixed on the top of the conductive outer sleeve and provided with a central hole; the conductive pressure nail penetrates through the center hole of the insulating cap and is fixed on the insulating cap; the conductive pressing nail and the conductive outer sleeve are respectively electrically connected with the two electric connection sheets through the electric board.

6. The large light-exit angle LED lamp of claim 1, wherein: and heat-conducting glue is coated between the flexible light source plate and the heat-conducting columnar body.