WO2016041130A1

WO2016041130A1 - Led lamp and manufacturing process therefor

Info

Publication number: WO2016041130A1
Application number: PCT/CN2014/086539
Authority: WO
Inventors: 文大承; 文相弼
Original assignee: 东莞励国照明有限公司
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2016-03-24

Abstract

An LED lamp and a manufacturing process therefor. The LED lamp comprises a lamp body (1) made of a plastic material, and comprises a lampshade (2) and a screw head (3) that are separately connected to two ends of the lamp body (1). An inner cavity of the lamp body (1) is sequentially provided with a heat dissipation cup (4) made of a heat conduction material, a heat dissipation member (5), an LED panel (6) and a driving PCB (7) from top to bottom in a sleeving manner, wherein the lamp body (1) is disposed on the driving PCB (7) in the axial direction. A wire (71) at the bottom end of the driving PCB (7) is connected to the screw head (3), an insertion connection portion (72) on the top of the driving PCB (7) perpendicularly penetrates through the heat dissipation member (5) and a center through hole (61) of the LED panel (6), and then two contacts (721) disposed on the insertion connection portion (72) on the top of the driving PCB (7) are in contact with contacts (82) disposed on the edge of a PCB through hole (81) and are electrically connected to LED sources (62) disposed on the LED panel (6). A plurality of heat dissipation grooves (42) of heat dissipation channels formed between longitudinal protruding edges (41) is separately formed in the outer wall of the heat dissipation cup (4) and the inner wall of the lamp body (1).

Description

LED lamp and its manufacturing process

Technical field

The invention relates to an LED lamp and a manufacturing process thereof.

Background technique

Lighting bulbs are widely used in urban roads, courtyards, walkways, garages, office spaces, public places, etc., to bring convenience to people's lives. Commonly used lighting bulbs, including tungsten filament bulbs, fluorescent lamps and LED bulbs, etc., LED bulbs have become the most widely used lighting bulbs due to their advantages of high efficiency, safety, energy saving, environmental protection, long life and fast response.

The existing LED bulbs generally have an aluminum heat-dissipating lamp body. The aluminum heat-dissipating lamp body is difficult to produce and needs to be processed one by one, which not only increases the production difficulty, but also has high cost and heavy weight. It brings difficulties to the assembly of LED bulbs and reduces production efficiency.

technical problem

The object of the present invention is to provide an LED lamp which effectively solves the problem of heat dissipation of a plastic material lamp body. Another object of the present invention is to provide an LED lamp which prevents the lamp body from being heated to cause the lamp cover to be reduced in deformation to fall off. It is still another object of the present invention to provide a manufacturing process of an LED lamp which is easy to operate, safe and reliable.

Technical solution

The technical solution of the present invention is that the LED lamp comprises a lamp body made of a plastic material, and a lamp cover and a screw head respectively connected at two ends of the lamp body, wherein the lamp body cavity is sequentially set from top to bottom. a heat dissipating cup made of a heat conductive material, a heat dissipating member, an LED board, a driving PCB board disposed along the axial direction of the lamp body, a wire connecting screw head driving the bottom end of the PCB board, and a plug portion driving the top of the PCB board vertically passing through the heat dissipating member and the LED After the center of the board is perforated, the two contacts provided on the top plug portion of the driving PCB board are electrically connected to the LED light sources disposed on the LED board via the contacts provided on the through-hole of the contact PCB board, and the outer wall of the heat sink cup and the lamp body The inner walls are respectively provided with a plurality of heat dissipation grooves for forming heat dissipation channels between the longitudinal heat dissipation ribs.

Preferably, the lamp body is formed by an annular step formed by the inner wall of the large-mouth end, and an annular groove is formed on the annular step, and an axial groove protruding from the bottom edge of the lamp cover is embedded in the mounting groove, and the inner wall of the annular step corresponding to the mounting groove The concave and the installation groove are perpendicularly penetrated into the longitudinal groove of the convex portion of the outer wall of the lamp cover, and the inner wall of the annular step adjacent to the longitudinal groove is recessed with a convex buckle embedded in the radial convex portion of the bottom edge of the lamp cover. The inner wall of the bottom of the annular step is formed by a longitudinal heat dissipating groove formed between a plurality of parallel heat dissipating ribs, an inner frame disposed along a central hole of the lamp body, a mounting groove formed between the inner frames, and an outer wall formed at a small end of the opposite end of the large end. It consists of external threads that are threaded onto the threaded head.

Preferably, the heat dissipating cup is made of aluminum, and the heat dissipating groove formed between the plurality of heat dissipating ribs protruding from the outer wall and the open end of the cup body are formed by forming an annular step for positioning the heat dissipating member.

Preferably, the heat dissipating member is formed by a cylindrical cup body, a platform from which the cylindrical cup body is raised upward from the bottom, an annular groove formed between the platform and the wall of the cup body, and a circumferential surface of the platform protruding outward at a radial distance and receiving The heat sink disposed in the annular groove, the center of the platform is provided with a through hole for the top of the driving PCB board, and the positioning column and the positioning column of the LED board positioning groove set symmetrically protruding at the two ends of the hole corresponding to the edge of the platform The screw holes and the wall of the cup body which are symmetrically opened between the perforations are formed by recessing and cutting the wall of the cup body to prevent the lamp cover from being reduced in heat and deformation.

Preferably, the LED board is formed by an annular plate, a PCB board covered by a center portion of the annular plate, a center of the PCB board and the annular board, and a perforation for inserting the top plug portion of the driving PCB board, and a perforated side edge of the PCB board. There are contacts electrically connected to the LED light sources, screw holes symmetrically opened on the annular plates at both ends of the PCB board, concave positioning grooves on the outer side of the screw holes on the outer side of the screw holes, and LEDs disposed between the edges of the PCB board and the annular board The composition of the light source.

Another technical solution of the present invention is that the LED lamp comprises a lamp body made of a plastic material, and a lamp cover and a screw head respectively connected at two ends of the lamp body, wherein the lamp body cavity is in turn from top to bottom. The heat sink cup made of a heat conductive material, the heat dissipating member, the LED board, the driving PCB board disposed along the axial direction of the lamp body, the wire connecting screw head driving the bottom end of the PCB board, and the plug portion of the top of the driving PCB board vertically pass through the heat dissipating member After the center of the LED board is perforated, the two contacts provided on the top plug portion of the driving PCB board are electrically connected to the LED light sources disposed on the LED board via the contacts provided on the through-hole of the contact PCB board, and the outer wall of the heat sink cup is The inner wall of the lamp body is respectively provided with a plurality of heat dissipation grooves forming a heat dissipation channel between the longitudinal heat dissipation ribs;

The lamp body is formed by an annular step formed by the inner wall of the large-mouth end, an installation groove in which the axial convex protrusion is protruded in the axial direction of the bottom edge of the lamp cover, and the inner wall of the annular step corresponding to the installation groove is recessed and installed. The groove vertically penetrates the longitudinal groove in which the protrusion protruding from the outer wall of the axial cover of the lamp cover is embedded, and the inner wall of the annular step adjacent to the longitudinal groove is recessed with a groove and a ring embedded in the convex protrusion of the bottom edge of the lamp cover. The inner wall of the bottom of the step is formed by a longitudinal heat dissipating groove formed between a plurality of parallel heat dissipating ribs, an inner frame disposed along a central hole of the lamp body, a mounting groove formed between the inner frames, and an outer wall formed at a small end of the opposite end of the large end and a screw head The external thread of the threaded connection;

The heat dissipating cup is made of aluminum material, and a heat dissipating groove formed between a plurality of heat dissipating ribs protruding from an outer wall thereof, and an open end of the cup body forming an annular step for positioning the heat dissipating member;

The heat dissipating member is composed of a cylindrical cup body, a platform from which the cylindrical cup body is bulged upward from the bottom, an annular groove formed between the platform and the cup body wall, and a circumferential surface of the platform which protrudes outward in the radial equidistance and is accommodated in the ring shape. The heat sink in the slot and the center of the platform are provided with a through hole for the top of the driving PCB board to be inserted through the hole, and the positioning column corresponding to the edge of the platform corresponding to the edge of the platform is disposed symmetrically between the positioning column and the positioning hole. The symmetrical opening of the screw hole and the wall of the cup body are formed by recessing and forming a groove for preventing the lamp cover from shrinking and deforming due to heat;

The LED board is formed by an annular plate, a PCB board covered by a center portion of the annular plate, a center of the PCB board and the annular board, and a through hole for inserting a top portion of the driving PCB board, and a perforated side edge of the PCB board. The LED light source is electrically connected to the contact, the screw hole on the annular plate at both ends of the PCB board is symmetrically opened, the annular plate outside the screw hole is located in the concave positioning groove, and the LED board is arranged between the PCB board and the edge of the annular plate.

A further technical solution of the present invention is the manufacturing process of the LED lamp, which is special in that it comprises the following steps:

(1) putting the heat dissipating cup into the inner cavity of the lamp made of plastic material and integrally molding, and the outer wall of the heat dissipating cup is convexly formed with a plurality of longitudinal ribs to form a heat dissipating channel heat dissipating groove;

(2) inserting the driving PCB board into the mounting groove formed in the frame of the lamp body cavity, and connecting the wire driving the bottom end of the PCB board to the screw head, and screwing the screw head to the bottom end of the lamp body;

(3) assembling the heat dissipating member in the cavity at the top end of the heat dissipating cup, and respectively positioning the positioning posts protruding at both ends of the heat dissipating member into the corresponding positioning slots of the LED board;

(4) The LED board is placed on the platform of the heat dissipating member, and is screwed into the screw hole of the LED board and the screw hole of the heat dissipating member platform by screws, and the LED board is fixed in the heat dissipating member, and the top of the driving PCB board is driven. The plug portions are respectively passed through the central through hole of the heat dissipating member and the center through hole of the LED board, and are in contact with the contact of the perforated edge of the PCB board;

(5) inserting the axial convex buckle at the bottom of the lamp cover into the installation groove provided on the annular step formed by the inner wall of the large end of the lamp body, and embedding the convex protrusion protruding from the outer wall of the lamp cover axially convexly with the installation groove In the longitudinal groove, at the same time, the convex protrusion of the bottom edge of the lamp cover is embedded in the concave groove in the inner wall of the annular step.

Beneficial effect

(1) A plurality of parallel longitudinal grooves are arranged on the outer wall of the aluminum heat dissipating cup, which is easier to dissipate heat and effectively improve the heat dissipation efficiency.

(2) The axial projection of the lamp cover is fixed in the mounting groove of the lamp body to prevent the rotation of the lamp cover.

(3) It is easier to assemble the lamp cover on the aluminum heat sink to prevent the lamp cover from shrinking and deforming due to heat, and the lamp cover assembled on the lamp body is not easily peeled off.

(4) attaching the PCB board on the LED board and providing contacts electrically connected to the LED light sources on the side of the perforation, making contacts on the top plug portion of the driving PCB board, so that the LED light sources on the LED board are The drive PCB board is easier to connect and does not require soldering of the wires.

DRAWINGS

附图说明 DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic exploded view of the LED lamp of the present invention.

Figure 2 is a cross-sectional view showing the structural assembly of the LED lamp of the present invention.

Figure 3 is a plan view of the LED lamp body of the present invention.

4 is a top plan view of an LED lamp LED panel of the present invention.

FIG. 5 is a schematic structural view of an LED lamp driving PCB board of the present invention.

Main component symbol description:

Lamp body 1, annular step 11, mounting groove 111, longitudinal groove 112, slot 113, heat dissipation rib 114, heat dissipation groove 114, heat dissipation groove 115, inner frame 116, mounting groove 117, external thread 118, lamp cover 2, shaft To the buckle 21, the protrusion 211, the buckle 22, the screw head 3, the heat dissipation cup 4, the heat dissipation rib 41, the heat dissipation groove 42, the annular step 43, the heat dissipation member 5, the center through hole 51, the cylindrical cup 52, the cup body a wall 521, a platform 53, a heat sink 531, an annular groove 54, a positioning post 55, a screw hole 56, a through groove 57, an LED board 6, a central through hole 61, an LED light source 62, an annular plate 63, a positioning groove 631, a screw hole 64, Driving PCB board 7, wire 71, plug portion 72, contact 721, PCB board 8 , PCB board perforation 81, contact 82, screw 9.

BEST MODE FOR CARRYING OUT THE INVENTION

The invention will be further described in detail below with reference to the accompanying drawings:

Referring to FIG. 1 , FIG. 2 and FIG. 4 , the LED lamp comprises a lamp body 1 made of plastic material, a lamp cover 2 and a screw head 3 respectively connected to the two ends of the lamp body 1 , and the inner cavity of the lamp body 1 is from above. And the heat sink 4 made of a heat conductive material, the heat dissipating member 5, the LED board 6, the driving PCB board 7 disposed along the axial direction of the lamp body 1, and the electric wire 71 driving the bottom end of the PCB board 7 are connected to the screw head 3 and the driving PCB. After the insertion portion 72 at the top of the plate 7 vertically passes through the central through hole 51 of the heat dissipation member 5 and the center through hole 61 of the LED board 6, the two contacts 721 of the top plug portion 72 of the drive PCB board 7 are contact-covered. The LEDs 62 disposed on the edges of the PCB board through holes 81 are electrically connected to the LED light sources 62 disposed on the LED board 6. The outer walls of the heat sink cup 4 and the inner wall of the lamp body 1 are respectively provided with a plurality of longitudinal heat dissipation fins 41. A heat dissipation groove 42 is formed between the heat dissipation channels.

Referring to FIG. 1 and FIG. 2, the lamp body 1 is embedded with an annular step 11 formed on the inner wall of the large-mouth end, and an annular protrusion 11 embedded in the axial direction of the bottom edge of the lamp cover 2 is embedded in the annular step 11. The inner wall of the annular step 11 corresponding to the mounting groove 111 and the mounting groove 111 is recessed perpendicularly to the mounting groove 111 and extends through the longitudinal groove 112 and the longitudinal groove 112 in which the protrusion 211 protruding from the outer wall of the lamp cover axial projection 21 is inserted. The inner wall of the step 11 is also recessed with a recessed groove 113 into which the bottom edge of the lamp cover 2 is radially convex, and a longitudinal heat dissipating groove 115 formed by the parallel heat radiating ribs 114 on the inner wall of the bottom of the annular step 11. The inner frame 116 disposed along the central hole of the lamp body 1, the mounting groove 117 formed in the middle of the inner frame 116, and the outer wall of the small end of the opposite end of the large end are formed by the external thread 118 threadedly connected to the screw head 3.

In this embodiment, the heat dissipating cup 4 is made of aluminum material, and the heat dissipating groove 42 formed between the plurality of heat dissipating ribs 41 protruding from the outer wall and the open end of the cup body are formed by the annular step 43 for positioning the heat dissipating member 5.

Referring to FIG. 1 and FIG. 2, the heat dissipating member 5 is composed of a cylindrical cup 52, a platform 53 which is raised upward from the bottom of the cylindrical cup 52, an annular groove 54 formed between the platform 53 and the cup wall 521, The circumferential surface of the platform 53 protrudes outwardly at a distance from the radial direction and is received in the annular groove 54. The center of the platform defines a through hole 51 through which the top plug portion 72 of the driving PCB board 7 passes, and is located at both ends of the through hole 51. Corresponding to the edge portion of the platform 53 symmetrically protruding the positioning post 55 for the LED plate positioning groove set, the screw hole 56 symmetrically opened between the positioning post 55 and the through hole 51, and the cup body wall 521 are concavely cut and formed to prevent the lamp cover 2 from being encountered. It is composed of a through groove 57 that heats down the deformation and falls off.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , the LED board 6 is formed by the annular board 63 , the PCB board 8 covered by the center of the annular board 63 , and the center of the PCB board 8 and the ring board 63 are opened for driving the PCB board. 7: The through hole 81 and the through hole 61 penetrated by the top insertion portion 72 and the side edge of the PCB plate through hole 81 are provided with a contact 82 electrically connected to each LED light source 62, and a screw hole symmetrically opened on the annular plate 63 at both ends of the PCB board 8. 64. The annular plate 63 outside the screw hole 64 is formed by a concave positioning groove 631, a plurality of LED light sources 62 disposed between the PCB board 8 and the edge of the annular plate 63.

Referring to FIG. 1 to FIG. 5, the manufacturing process of the LED lamp includes the following steps:

(1) disposing the heat dissipating cup 4 of the heat dissipating channel heat dissipating groove 42 between the longitudinal ribs 41 and the longitudinal ribs 41 into the inner cavity of the lamp body 1 made of plastic material and integrally molding;

(2) The driving PCB board 7 is inserted into the mounting groove 117 formed in the middle of the inner frame 116 of the lamp body, and the electric wire 71 driving the bottom end of the PCB board is connected to the screw head 3, and the screw head 3 is screwed to the lamp body. The bottom end of 1;

(3) The heat dissipating member 5 is assembled in the cavity at the top end of the heat dissipating cup 4, and the positioning posts 55 protruding from the two ends of the heat dissipating member 5 are respectively inserted into the corresponding positioning grooves 631 of the LED board 6;

(4) The LED board 6 is placed on the platform 53 of the heat dissipating member, and is screwed into the screw hole 64 of the LED board and the screw hole 56 of the heat dissipating member platform by the screws 9, respectively, and the LED board 6 is fixed in the heat dissipating member 5. And the insertion portion 72 of the top of the driving PCB board 7 respectively passes through the central through hole 51 of the heat dissipating member and the center through hole 61 of the LED board, and then contacts the contact 82 of the edge of the PCB board through hole 81;

(5) inserting the axial buckle 21 at the bottom of the lamp cover 2 into the mounting groove 111 provided on the annular step 11 formed by the inner wall of the large end of the lamp body 1, and protruding the convex portion of the outer wall of the lamp cover axially protruding 21 The 211 is inserted into the longitudinal groove 112 which penetrates the mounting groove 111, and the convex buckle 22 which is radially convex at the bottom edge of the lamp cover 2 is embedded in the concave recess 113 in the inner wall of the annular step 11.

Embodiments of the invention

Industrial applicability

The above are only the preferred embodiments of the present invention, and all changes and modifications made within the scope of the claims of the present invention should be construed as the scope of the claims.

Sequence table free content

Claims

An LED lamp comprises a lamp body made of a plastic material, and a lamp cover and a screw head respectively connected at two ends of the lamp body, wherein the lamp body cavity is arranged in a heat dissipation cup made of a heat conductive material and heat dissipation from top to bottom. The driving, the LED board, the driving PCB board disposed along the axial direction of the lamp body, the wire connecting screw head driving the bottom end of the PCB board, and the plugging portion of the top of the driving PCB board are vertically perforated through the center of the heat dissipating member and the LED board, the driving The two contacts provided on the top of the PCB board are electrically connected to the LED light sources disposed on the LED board via the contacts provided on the perforated edges of the PCB, and the outer walls of the heat sink and the inner wall of the lamp body are respectively provided with a plurality of longitudinal heat dissipation protrusions. A heat sink that forms a heat dissipation channel between the edges.
The LED lamp according to claim 1, wherein the lamp body is formed by an annular step formed by the inner wall of the large-mouth end, and an annular groove is formed on the annular step, and the axial groove is protruded from the bottom edge of the lamp cover. The inner wall of the annular step corresponding to the installation groove and the installation groove are perpendicularly penetrated through the longitudinal groove of the protrusion protruding from the outer wall of the axial cover of the lamp cover, and the inner wall of the annular step adjacent to the longitudinal groove is recessed for the bottom edge of the lamp cover a convex groove embedded in the outward convex convex buckle, an inner wall of the bottom of the annular step, a longitudinal heat dissipation groove formed by a plurality of parallel heat dissipation ribs, an inner frame disposed along a center hole of the lamp body, and a mounting groove formed between the inner frames The outer wall of the small end of the opposite end of the large mouth end is formed by the external thread of the threaded connection of the screw head.
The LED lamp according to claim 1, wherein the heat dissipating cup is made of aluminum, and the heat dissipating groove formed between the plurality of heat dissipating ribs protruding from the outer wall and the annular end of the cup body are formed by the annular step for positioning the heat dissipating member. .
The LED lamp according to claim 1, wherein the heat dissipating member comprises a cylindrical cup body, a platform in which the cylindrical cup body is raised upward from the bottom, an annular groove formed between the platform and the cup body wall, and a circumferential surface of the platform. a heat sink having a radial distance and extending outwardly and accommodated in the annular groove, a center of the platform for opening a through hole for driving the top of the PCB board, and a symmetrically protruding LED plate at the opposite ends of the hole corresponding to the edge of the platform The positioning hole of the positioning groove set, the screw hole formed symmetrically between the positioning post and the perforation, and the wall of the cup body are concavely cut to form a through groove for preventing the lamp cover from shrinking and deforming due to heat.
The LED lamp according to claim 1, wherein the LED board is formed by an annular plate, a PCB board covered by a center portion of the annular plate, a center of the PCB board and the annular board, and a top portion of the driving PCB board is inserted through the insertion portion. The perforated, the perforated side edge of the PCB board is provided with a contact electrically connected to each LED light source, a screw hole symmetrically opened on the annular plate at both ends of the PCB board, a concave positioning groove on the outer side of the screw hole, and a PCB board. It is composed of several LED light sources arranged between the edges of the annular plate.
An LED lamp comprises a lamp body made of a plastic material, and a lamp cover and a screw head respectively connected at two ends of the lamp body, wherein the lamp body cavity is arranged in a heat dissipation cup made of a heat conductive material and heat dissipation from top to bottom. The driving, the LED board, the driving PCB board disposed along the axial direction of the lamp body, the wire connecting screw head driving the bottom end of the PCB board, and the plugging portion of the top of the driving PCB board are vertically perforated through the center of the heat dissipating member and the LED board, the driving The two contacts provided on the top of the PCB board are electrically connected to the LED light sources disposed on the LED board via the contacts provided on the perforated edges of the PCB, and the outer walls of the heat sink and the inner wall of the lamp body are respectively provided with a plurality of longitudinal heat dissipation protrusions. a heat dissipation groove forming a heat dissipation channel between the edges;

The lamp body is formed by an annular step formed by the inner wall of the large-mouth end, an installation groove in which the axial convex protrusion is protruded in the axial direction of the bottom edge of the lamp cover, and the inner wall of the annular step corresponding to the installation groove is recessed and installed. The groove vertically penetrates the longitudinal groove in which the protrusion protruding from the outer wall of the axial cover of the lamp cover is embedded, and the inner wall of the annular step adjacent to the longitudinal groove is recessed with a groove and a ring embedded in the convex protrusion of the bottom edge of the lamp cover. The inner wall of the bottom of the step is formed by a longitudinal heat dissipating groove formed between a plurality of parallel heat dissipating ribs, an inner frame disposed along a central hole of the lamp body, a mounting groove formed between the inner frames, and an outer wall formed at a small end of the opposite end of the large end and a screw head The external thread of the threaded connection;

The heat dissipating cup is made of aluminum material, and a heat dissipating groove formed between a plurality of heat dissipating ribs protruding from an outer wall thereof, and an open end of the cup body forming an annular step for positioning the heat dissipating member;

The heat dissipating member is composed of a cylindrical cup body, a platform from which the cylindrical cup body is bulged upward from the bottom, an annular groove formed between the platform and the cup body wall, and a circumferential surface of the platform which protrudes outward in the radial equidistance and is accommodated in the ring shape. The heat sink in the slot and the center of the platform are provided with a through hole for the top of the driving PCB board to be inserted through the hole, and the positioning column corresponding to the edge of the platform corresponding to the edge of the platform is disposed symmetrically between the positioning column and the positioning hole. The symmetrical opening of the screw hole and the wall of the cup body are formed by recessing and forming a groove for preventing the lamp cover from shrinking and deforming due to heat;

The LED board is formed by an annular plate, a PCB board covered by a center portion of the annular plate, a center of the PCB board and the annular board, and a through hole for inserting a top portion of the driving PCB board, and a perforated side edge of the PCB board. The LED light source is electrically connected to the contact, the screw hole on the annular plate at both ends of the PCB board is symmetrically opened, the annular plate outside the screw hole is located in the concave positioning groove, and the LED board is arranged between the PCB board and the edge of the annular plate.
A method of manufacturing an LED lamp, comprising the steps of:

(1) putting the heat dissipating cup into the inner cavity of the lamp made of plastic material and integrally molding, and the outer wall of the heat dissipating cup is convexly formed with a plurality of longitudinal ribs to form a heat dissipating channel heat dissipating groove;

(2) inserting the driving PCB board into the mounting groove formed in the frame of the lamp body cavity, and connecting the wire driving the bottom end of the PCB board to the screw head, and screwing the screw head to the bottom end of the lamp body;

(3) assembling the heat dissipating member in the cavity at the top end of the heat dissipating cup, and respectively positioning the positioning posts protruding at both ends of the heat dissipating member into the corresponding positioning slots of the LED board;

(4) The LED board is placed on the platform of the heat dissipating member, and is screwed into the screw hole of the LED board and the screw hole of the heat dissipating member platform by screws, and the LED board is fixed in the heat dissipating member, and the top of the driving PCB board is driven. The plug portions are respectively passed through the central through hole of the heat dissipating member and the center through hole of the LED board, and are in contact with the contact of the perforated edge of the PCB board;

(5) inserting the axial convex buckle at the bottom of the lamp cover into the installation groove provided on the annular step formed by the inner wall of the large end of the lamp body, and embedding the convex protrusion protruding from the outer wall of the lamp cover axially convexly with the installation groove In the longitudinal groove, at the same time, the convex protrusion of the bottom edge of the lamp cover is embedded in the concave groove in the inner wall of the annular step.