KR100984958B1 - Retrofit led lamp, method for making the same, and retrofit multi led lamp set - Google Patents

Abstract

PURPOSE: A retrofit LED lamp, a manufacturing method thereof, and a retrofeet multi LED lamp structure thereof are provided to improve directivity and the range of illumination by using an optical convex lens. CONSTITUTION: A plurality of heat radiation fins are formed in the outer peripheral surface of a heat-sink(10). A convex lens(30) is made of a transparent acrylic material. The convex lens is installed inside the fitting end of the heat-sink. A gasket ring(20) is made of a silicon rubber material. The gasket ring is inserted between the hitch bed of the fitting end of the heat-sink and the protrusion end of the convex lens. A plurality of LED modules are installed on a PCB(40). A shaft(50) includes a first cylindrical body part and a second cylindrical body part.

Description

Retrofit LED lamp, Method for making the same, and Retrofit multi LED lamp Set}

The present invention relates to a retrofit LED lamp, a manufacturing method and a retrofit multi LED lamp structure. More specifically, by using the optical convex lens method, it is possible to remotely illuminate high directivity, high photosensitivity, and a wide range of illumination, and the double pipe structure shaft allows other components to be easily detached from the heat sink once. In addition to transferring heat generated from the LED module and PCB to the heat sink quickly and efficiently, the wires can be safely and easily withdrawn to the outside, and the retrofit LED lamp can be easily detached from the external structure. By adopting the multi-LED lamp structure, if the angle between the unit LED lamps is properly adjusted, a wide range of lighting is possible by the interaction between the unit LED lamps, and long-distance lighting is possible, and there is no glare and excellent light efficiency and the socket of the existing lamp It is easy to replace the existing lighting by utilizing the The present invention relates to a retrofit LED lamp, a manufacturing method, and a retrofit multi LED lamp structure that can be used in various field environments from low power to high power as well as long life.

Recently, with the advent of the low-carbon green growth era, the green environment movement is developing internationally. In line with this international trend, the Korean government has also established and actively supports the five-year green growth plan. In addition, there is a need for energy saving in preparation for the era of high oil prices.

Among the low-carbon green growth sectors, light emitting diodes (LEDs) are in the spotlight. LED is a new technology that uses semiconductor devices for lighting. Its low power consumption, semi-permanent life, and the ability to produce various colors are also possible. In addition, LED is a product that meets the trend of low carbon green growth due to its high light conversion efficiency, no mercury, and low carbon dioxide emission.

A light emitting diode (LED) is composed of a junction between a p-type and an n-type semiconductor, and is a type of optoelectronic device that emits energy corresponding to a band gap of a semiconductor in the form of light by combining electrons and holes when a voltage is applied. Light emitting diodes have been used as a display and image light source for electronic devices, including information and communication devices, and since the mid-1990s, blue LEDs have been developed to enable full-color display. Light-emitting diodes (LEDs) are widely used in general lighting, building decoration, mood lamps, vehicles, traffic signals, indoor and outdoor billboards, induction lamps, warning lights, light sources for various security equipment, and light sources for sterilization or disinfection. .

However, the conventional light emitting diode (LED) module has a problem in that the light diffusion and brightness decrease due to the precipitation of the phosphor. Therefore, there is a limit in generating high brightness light. In addition, the conventional LED lamp has a light output of up to 400W class, the light efficiency is only 60 Lumen / W, and the lifetime is only 9,000 hours. There is a problem that the economy is lowered due to the lifespan. In addition, the conventional LED lighting has a problem that the structure is complicated, not easy to assemble, takes a lot of time to manufacture and is not easily removable.

In addition, conventional LED lamps have not been studied for simultaneously seeking heat dissipation under the LED chip and heat dissipation under the metal PCB. Most LED modules with large capacity have large heat sinks or heat sinks, and if there is no effect of improving thermal stability on the heat sinks, thermal shock may be applied to the LED chip, causing a decrease in brightness and ultimately shortening the life of the LED module. There is a problem.

The present invention has been made to solve the above problems, and in particular, high-direction, high luminosity, a wide range of illumination is possible to secure long distance, the components can be easily removable once in the heat sink, LED Not only does it quickly and efficiently transfer heat generated from the module and PCB to the heat sink, it also allows the wires to be drawn safely and easily to the outside, and makes it easy to attach and remove the retrofit LED lamps to the exterior structure. Excellent light efficiency, easy replacement for existing lighting, excellent heat dissipation, long life, and retrofit LED lamps, manufacturing methods, and retrofit multi-LED lamp structures that can be customized in various field environments from low to high output The purpose is to provide.

Retrofit LED lamp according to the present invention devised to achieve the above object is provided with an empty space therein, a thread is formed on the inner circumferential surface, a plurality of heat dissipation fins are disposed on the outer circumferential surface, the end is provided at one end, A heat sink having a cylindrical can shape; A convex lens made of a transparent acrylic material mounted inside the locking end of the heat sink, and having a protruding end at the edge thereof to be seated at the locking end, wherein a radius of curvature of the outer surface is smaller than a radius of curvature of the inner surface; A gasket ring made of silicone rubber inserted between the engaging end of the heat sink and the protruding end of the convex lens; A printed circuit board (PCB) having an edge in contact with the protruding end of the convex lens, having a fixing groove at the edge, and having a plurality of LED modules mounted thereon; The outer circumferential surface is provided with a screw bone for screwing the thread of the inner circumferential surface of the heat sink, the upper end is provided with a fixing projection for fitting the fixing groove of the PCB, the lower end is provided in the first cylindrical portion and the inside of the first cylindrical portion A shaft having an upper end attached to the first cylindrical part, and having a lower end open and having a second cylindrical part having a screw thread at the lower part thereof; And a nut coupled to a screw thread provided in the second cylindrical portion of the shaft.

In addition, the retrofit multi LED lamp structure according to the present invention is a body; A fixing screw provided on one side of the body and having a screw thread formed on an outer circumferential surface thereof; A plurality of plate-shaped holders provided on the other side of the body; A coupling part coupled to the mounting part and having a rotatable rotating arm; A seating portion coupled to the rotating arm of the coupling portion; And a retrofit LED lamp coupled to the seating portion.

In addition, the manufacturing method of the retrofit LED lamp according to the present invention comprises the steps of: (a) forming a plurality of heat dissipation fins on the outer circumferential surface and forming a locking end at one end; (b) inserting a gasket ring into the locking end; (c) mounting a convex lens inside the locking end to contact the gasket ring; (d) forming a shaft in a double pipe structure having an outer pipe and an inner pipe, and forming a thread at an outer circumferential surface of the outer pipe and a lower end of the outer circumferential surface of the inner pipe; (e) forming a hole in the center of the PCB, mounting a plurality of LED modules on the PCB, drawing a wire for supplying power to the LED module into the hole, and then passing the wire through the inner pipe while the PCB Seating on top of the; And (f) screwing the shaft on which the PCB is mounted to the inner circumferential surface of the heat sink.

According to the present invention, by using the optical convex lens system, high directivity, high photo-tactile properties, and wide illumination can be secured, thereby enabling long-distance illumination and having an effect of more than 100 lumens per watt.

In addition, according to the present invention, the dual pipe structure has a shaft so that other components can be easily detached and detached to the heat sink, and the heat generated from the LED module and the PCB is quickly and efficiently transferred to the heat sink, Safe and easy to draw out, there is an effect that can be easily attached and detached retrofit LED lamp to the external structure.

In addition, according to the present invention, by adopting a multi-LED lamp structure, if the angle between the unit LED lamps are properly adjusted, there is an effect that can be a wide range of illumination by the interaction of the unit LED lamps, while the long distance lighting is possible.

In addition, according to the present invention, there is no glare and excellent light efficiency, it is easy to replace the existing light by using the socket of the existing light, excellent heat dissipation characteristics, long life is possible, customized in a variety of field environments from low output to high output It can be used as an effect.

1 is an exploded perspective view of a retrofit LED lamp according to an embodiment of the present invention;
2A and 2B are perspective views of a retrofit LED lamp according to an embodiment of the present invention,
3 is a plan view of FIG.
4A is a vertical cross-sectional view of FIG. 2,
Figure 4b is a vertical cross-sectional view of the wire is coupled,
5 is a perspective view of a retrofit LED lamp according to another embodiment of the present invention,
6 is a perspective view of a retrofit multi LED lamp structure according to an embodiment of the present invention,
7 is a perspective view of a retrofit multi LED lamp structure according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 is an exploded perspective view of a retrofit LED lamp according to an embodiment of the present invention, Figures 2a and 2b is a perspective view of a retrofit LED lamp according to an embodiment of the present invention, Figure 3 is a plan view of Figure 1, Figure 4a is 2 is a vertical cross-sectional view of a wire coupled thereto.

Retrofit LED lamp 100 according to an embodiment of the present invention, referring to Figures 1 to 4b, the heat sink 10, the gasket ring 20, the convex lens 30, the printed circuit board (Hereinafter “PCB”) 40, shaft 50, and nut 60. Hereinafter, in the description, the expressions of the upper direction, the lower direction, the upper end, the lower side, the left side, the right side, etc. are based on FIG. 4A.

The heat sink 10 serves as a housing surrounding the exterior of the retrofit LED lamp 100 and at the same time, emits high temperature heat generated by the LED module 44 of the PCB 40. . The heat sink 10 is formed in a cylindrical can shape in which the upper end and the lower end are opened as a whole, and an empty space is provided therein. The gasket ring 20, the convex lens 30, the PCB 40, and the shaft 50 are inserted into the empty space therein. In order to perform the heat dissipation function with the housing, the heat sink 10 is preferably formed of a metal material having excellent thermal conductivity.

Threads are formed on the inner circumferential surface of the heat sink 10. Screw threads 52 formed on the outer circumferential surface of the first cylindrical portion 51 of the shaft 50 is coupled to the thread. A plurality of heat radiation fins are formed on the outer circumferential surface of the heat sink 10. In order to maximize the surface area, the plurality of heat dissipation fins may be arranged side by side at a predetermined interval, and the top of each heat dissipation fin may be formed to form a curved surface and the bottom to form a corner. The upper curved surface has the effect of facilitating handling, preventing safety accidents, and beautifully designing the exterior.

A locking end 32 is provided at one end (the upper end in FIG. 4A) of the heat sink 10. The locking end 32 extends from the upper end of the heat sink 10 in an inward direction, and a gasket ring 20 is inserted into the locking end 32, and the protruding end 12 of the convex lens 30 is seated.

The gasket ring 20 is inserted between the locking end 32 of the heat sink 10 and the protruding end 12 of the convex lens 30 to maintain airtightness, prevent scratches, and impact resistance of the convex lens 30. Improve. To this end, the gasket ring 20 is preferably formed of an elastic material, for example, may be formed of a silicon rubber (silicone rubber) material. Silicone rubber has a slight fluidity even at room temperature, and has a molecular weight greater than that of silicone oil, reaching a molecular weight of several hundred thousand. Silicone rubber is very excellent in heat resistance, and can maintain a change in strength and elongation rate within 10% even when it is left at 250 ° C for a long time. Moreover, silicone rubber has the characteristic of not losing rubber elasticity even at -45 degrees Celsius.

The convex lens 30 is mounted inside the locking end 32 of the heat sink 10, and serves to protect the surface of the PCB 40 on which the LED module 44 is mounted and to improve optical characteristics. Specifically, the convex lens 30 is seated on the engaging end 32 of the heat sink 10 through the protruding end 12 formed at the edge.

The convex lens 30 includes an outer curved surface and an inner curved surface, and the curvature radius of the outer curved surface is preferably formed to be smaller than the radius of curvature of the inner curved surface. By taking such a structure, the convex lens 30 secures high directivity, high photosensitivity, and wide illumination by using an optical convex lens method, thereby enabling long-distance illumination and having an effect of 100 lumens or more per watt. In the case of forming a multi-LED lamp structure using a plurality of retrofit LED lamps, when the angles between the unit LED lamps are properly adjusted, a wide range of illumination can be realized by the interaction between the unit LED lamps, and a long distance lighting can be realized. have. This will be described in more detail with reference to FIGS. 6 and 7.

Convex lens 30 is preferably formed of a transparent, high light transmittance, excellent durability, insulation and water resistance, for example, may be formed of a transparent acrylic (acryl) material. Acrylic is colorless and transparent and has a light transmittance of approximately 1.49. In addition, acrylic is excellent in chemical resistance, durability, water resistance, electrical insulation, and molding processability without discoloration when exposed to the outdoors.

 PCB 40 is located in the lower direction of the convex lens 30, a plurality of LED module 44 is mounted. For this purpose, the PCB 40 may be formed in a disc shape, and although not shown, it may be formed in a shape other than the disc according to the shape of the heat sink.

More specifically, the PCB 40 has an edge contacting the protruding end 12 of the convex lens 30. A plurality of fixing grooves 42 are formed at the edges of the PCB 40, and the fixing grooves 42 are coupled to the fixing protrusions 53 formed at the top of the shaft 50 to connect the PCB 40 to the top of the shaft 50. Settle on In addition, the fixing groove 42 and the fixing protrusion 53 structure prevents the PCB 40 from rotating together when the shaft 50 is assembled by rotating the shaft 50 in the heat sink 10.

The PCB 40 may be formed of a metal material. Metal PCB has better heat dissipation effect than general PCB. However, due to the trend of high density integration of the LED chip and small weight of the LED module, there may be a limit in dissipating a large amount of heat generated in the LED device, thereby minimizing the risk of damage to the LED device due to heat accompanying light emission. For this purpose, the metal PCB is preferably provided with a heat dissipation member. In the present invention, the heat dissipation fin of the heat sink 10, the shaft 50 positioned below the PCB 40 can sufficiently perform the role of the heat dissipation member.

Although not shown, a mixture layer having excellent thermal conductivity may be provided between each LED module 44 and the PCB 40 so that heat generated from the LED module 44 may be quickly transferred to the PCB 40. . As the mixture layer, a mixture of epoxy resin, silver (Ag), and ceramic particles may be used. Ag / ceramic / epoxy acts as a conductive adhesive, and silver particles can greatly improve electrical conductivity and heat distortion temperature and prevent denaturation of epoxy resins.

A hole 43 is provided at the center of the PCB 40 (see FIG. 3). The hole 43 is for drawing out the wire 62 for supplying power to the LED module 44 in the downward direction. The wire 62 drawn out downward through the hole 43 is drawn out of the retrofit LED lamp 100 through the inside of the second cylindrical portion 55 of the shaft 50 (see FIG. 4B).

The shaft 50 is provided at the bottom of the PCB 40 so that the gasket ring 20, the convex lens 30, and the PCB 40 are coupled to the heat sink 10, and the wire 62 is drawn outward. It serves to fix the retrofit LED lamp 100 to a separate external structure.

The shaft 50 has a double pipe structure of a first cylindrical portion 51 having a large diameter and a second cylindrical portion 55 having a small diameter.

The first cylindrical portion 51 has a fixing protrusion 53 is fitted to the fixing groove 42 of the PCB 40 on the upper end, the screw bone 52 is coupled to the thread of the inner peripheral surface of the heat sink 10 on the outer peripheral surface It is provided. To this end, the upper end of the first cylindrical portion 51 is partially open and the lower end is fully open. The wire 62 is inserted into the partially open top.

The second cylindrical portion 55 is formed inside the first cylindrical portion 51, and similarly to the first cylindrical portion 51, the upper end is partially open and the lower end is fully open. An electric wire 62 for supplying power to the LED module 44 passes through the second cylindrical portion 55. The lower end of the second cylindrical portion 55 is formed with a thread 56 for engaging with the nut 60.

In this way, the shaft 50 has a double pipe structure of the first cylindrical portion 51 and the second cylindrical portion 55 to heat sink the gasket ring 20, the convex lens 30, and the PCB 40. Easily detachable to the (10) once, and not only transfer heat generated in the LED module 44 and the PCB 40 to the heat sink 10 quickly and efficiently, but also safely and easily the wire 62 To be withdrawn to the outside, and to easily detach the retrofit LED lamp 100 to the external structure.

The nut 60 serves to fix the lower end of the second cylindrical portion 55 to the outer structure.

5 is a perspective view of a retrofit LED lamp according to another embodiment of the present invention. 5 is similar to the embodiment of FIG. 2A except that the heat dissipation fins of the heat sink 10a are formed in different shapes, and therefore, the description will be mainly focused on differences.

The heat sink 10a of the retrofit LED lamp according to another embodiment of the present invention is provided with a heat dissipation fin that is bent in one direction and has a swirl shape as a whole. By adopting such a structure, the heat dissipation fin can maximize the surface area of the heat dissipation fin and the air to improve the heat transfer efficiency.

6 is a perspective view of a retrofit multi-LED lamp structure according to an embodiment of the present invention.

Retrofit multi LED lamp structure according to an embodiment of the present invention, referring to Figure 6, the body 200, fixing screw 210, mounting portion 220, coupling portion 110, seating portion 70, a detachable member 80, and a retrofit LED lamp 100.

The body 200 serves as a body in which the fixing screw 210 and the mounting part 220 are formed. For example, the body 200 may be formed in a substantially rectangular parallelepiped shape as shown in FIG. 6.

Fixing screw 210 is provided on one side of the body 200, the thread is formed on the outer peripheral surface. The thread incorporates a retrofit multi-LED lamp structure into an external device such as a lampshade or reflector.

Mounting unit 220 is provided on the other side of the body 200, it is made of a plurality of plate-like structure. Mounting unit 220 is preferably manufactured integrally with the body 200, in some cases may be manufactured separately and may be coupled to the body 200. The mounting part 220 is formed to match the number of LED lamps 100.

The coupling part 110 is coupled to the mounting part 220. Coupling portion 110 is manufactured separately from the body 200, it is easy to be coupled to the mounting portion 220 through the screw coupling. Coupling portion 110 has a rotatable rotating arm. As described above, the coupling unit 110 may have a hinge structure, thereby adjusting the illumination angles of the plurality of LED lamps 100 to maximize the directivity and the irradiation range.

The seating unit 70 is coupled to the rotating arm end of the coupling unit 110, it is preferable to be formed in a plate to facilitate the LED lamp 100 is seated. The seating part 70 is also formed to match the number of LED lamps 100 similarly to the mounting part 220 and the coupling part 110. When the mounting unit 70 is gripped and moved in the vertical direction, the rotating arm of the coupling unit 110 rotates to easily adjust the angle of the LED lamp 100.

The detachable member 80 is positioned below the seating part 70 to attach or separate the LED lamp 100 to the seating part 70.

As such, by arranging a plurality of retrofit LED lamps using the optical convex lens method and adjusting the angles between them, the directivity, the phototactileness, and the illumination range can be improved, thereby enabling long-distance illumination.

Retrofit LED lamp and multi-LED lamp structure according to the present invention is capable of long-distance illumination, no glare, very light efficiency of at least 80 Lumen / W. Therefore, the retrofit LED lamp according to the present invention can be utilized for a variety of purposes, such as security lights, street lights, factory lights, work lights, floodlights, stadium lighting. In addition, the retrofit LED lamp according to the present invention is easy to replace the existing lamp by utilizing the socket of the existing lamp. In addition, the heat dissipation characteristics are excellent, the service life is approximately 50,000 hours, and can be used in a variety of field environments from low power (about 10W) to high power (500W). In addition, the retrofit LED lamp according to the present invention has an excellent visual effect with a beautiful design.

7 is a perspective view of a retrofit multi LED lamp structure according to another embodiment of the present invention. The embodiment of FIG. 7 is similar to the embodiment of FIG. 6 except that the mounting structure, the body shape, and the number of LED lamps are different.

Retrofit multi LED lamp structure according to another embodiment of the present invention, referring to Figure 7, body 300, fixing screw 310, mounting portion 320, coupling portion 110, seating portion 70 , Detachable member 80, and retrofit LED lamp 100 is made.

Body 300 is formed in a cylindrical shape, the mounting portion 320 is formed in a disk shape at the bottom of the body (300). Since the disc of the mounting portion 320 is formed with a plurality of screw holes for fixing the coupling portion 110, the number and position of the coupling portion 110 can be freely adjusted as necessary.

Next, a method of manufacturing a retrofit LED lamp according to a preferred embodiment of the present invention.

Step (a) is a step of manufacturing a heat sink by forming a plurality of heat dissipation fins on the outer circumferential surface and a locking end at one end thereof. Heat sinks are made of high thermal conductivity metals such as aluminum or aluminum alloys. The heat dissipation fin can be manufactured in various shapes such as radial and vortex. The inner circumferential surface of the heat sink forms a thread for engagement with the shaft.

Step (b) is a step of inserting the gasket ring inside the locking end. The gasket ring is made of a material with high elasticity and heat resistance, such as silicone rubber.

Step (c) is a step of mounting the convex lens inside the locking end to contact the gasket ring. The convex lens is made of a material having excellent transparency, water resistance, heat resistance, and durability, such as transparent acrylic.

Step (d) is a step of forming a shaft in a double pipe structure having an outer pipe and an inner pipe, and forming a thread on an outer circumferential surface of the outer pipe and a lower end of the outer circumferential surface of the inner pipe. Shafts are also made of high thermal conductivity metals such as heat sinks. The double pipe structure of the shaft can be produced by casting. The upper end of the shaft forms a fixing projection for fixing the PCB.

Step (e) forms a hole in the center of the PCB, mounts a plurality of LED modules on the PCB, draws out the wires that supply power to the LED module, and then seats the PCB on the top of the shaft while passing the wires through the inner pipe. Step. The PCB can be made of a metal material, and a fixing groove is formed at the edge of the PCB and inserted into the fixing protrusion at the top of the shaft.

Step (f) is a step of screwing the shaft on which the PCB is mounted to the inner circumferential surface of the heat sink.

As such, if the retrofit LED lamp is manufactured by the above manufacturing method, the manufacturing process is very simple and easily assembled or disassembled, and mass production can be performed in a short time.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

The present invention relates to an LED lamp, and can be widely applied to various fields such as security light, street light, factory light, work light, floodlight, stadium, and the like.

10-Heatsink 20-Gasket Ring
30-Convex Lens 40-PCB
50-shaft 60-nut
70-seating part 80-detachable member
200, 300-Body 210, 310-Set Screw
220, 320-Mount

Claims (8)

A heat sink having an empty space therein, a thread formed on an inner circumferential surface, a plurality of heat dissipation fins disposed on an outer circumferential surface, and a locking end provided at one end thereof, and having a cylindrical can shape;
A convex lens made of a transparent acrylic material mounted inside the locking end of the heat sink, and having a protruding end at the edge thereof to be seated at the locking end, wherein a radius of curvature of the outer surface is smaller than a radius of curvature of the inner surface;
A gasket ring made of silicone rubber inserted between the engaging end of the heat sink and the protruding end of the convex lens;
A printed circuit board (PCB) having an edge in contact with the protruding end of the convex lens, having a fixing groove at the edge, and having a plurality of LED modules mounted thereon;
The outer circumferential surface is provided with a screw bone for screwing the thread of the inner circumferential surface of the heat sink, the upper end is provided with a fixing projection for fitting the fixing groove of the PCB, the lower end is provided in the first cylindrical portion and the inside of the first cylindrical portion A shaft having an upper end attached to the first cylindrical part, and having a lower end open and having a second cylindrical part having a screw thread at the lower part thereof; And
Nut coupled to the thread provided in the second cylindrical portion of the shaft
Retrofit (retrofit) LED lamp comprising a. The method of claim 1,
The heat dissipation fin of the heat sink is bent in one direction, the retrofit LED lamp, characterized in that it is formed in a spiral shape as a whole. The method of claim 1,
The PCB is a retrofit LED lamp, characterized in that the metal (metal) PCB. The method of claim 3,
Retrofit LED lamp, characterized in that between the metal PCB and each LED module is provided with a mixture layer of epoxy resin, silver (Ag) and ceramic particles. The method of claim 1,
Each of the heat sink fins of the heat sink is a retrofit LED lamp, characterized in that the top is a curved surface and the bottom is a corner. The method of claim 1,
The center of the PCB is provided with a hole for drawing a wire for supplying power to the LED module, the wire is retrofit LED lamp, characterized in that the wire is drawn out through the inside of the second cylindrical portion of the shaft. body;
A fixing screw provided on one side of the body and having a screw thread formed on an outer circumferential surface thereof;
A plurality of plate-shaped holders provided on the other side of the body;
A coupling part coupled to the mounting part and having a rotatable rotating arm;
A seating portion coupled to the rotating arm of the coupling portion; And
Retrofit LED lamp according to any one of claims 1 to 6 coupled to the seating portion
Retrofit multi-LED lamp structure comprising a. (a) manufacturing a heat sink by forming a plurality of heat dissipation fins on an outer circumferential surface and a hook end at one end thereof;
(b) inserting a gasket ring into the locking end;
(c) mounting a convex lens inside the locking end to contact the gasket ring;
(d) forming a shaft in a double pipe structure having an outer pipe and an inner pipe, and forming a thread at an outer circumferential surface of the outer pipe and a lower end of the outer circumferential surface of the inner pipe;
(e) forming a hole in the center of the PCB, mounting a plurality of LED modules on the PCB, drawing a wire for supplying power to the LED module into the hole, and then passing the wire through the inner pipe while the PCB Seating on top of the; And
(f) screwing the shaft on which the PCB is seated to an inner circumferential surface of the heat sink;
Retrofit LED lamp manufacturing method comprising a.

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