CN103822127A - LED bulb lamp - Google Patents

Abstract

The invention discloses an LED bulb lamp, the lamp holder of which is fixedly installed on the lamp holder; one end of the heat dissipation body is fixedly installed on the lamp holder, and a drive circuit is housed in the internal cavity of the heat sink; one end of the drive circuit is fixedly arranged on the lamp holder; The other end is provided with a mounting ring; the heat dissipation ring is fixedly mounted on the mounting ring; the heat conducting post is fixedly mounted on the mounting ring; The light-emitting diodes are fixedly installed on the corresponding pads; the lampshade is fixedly installed on the annular groove of the cooling ring. Using the above scheme, the LED bulb lamp with wide-angle light is realized. The heat dissipation effect of the lamp is high, thereby prolonging the service life and reducing the light decay. The driving circuit is far away from the light-emitting diode, thereby effectively reducing the surface temperature of electronic components. The driving circuit has longer service life, higher luminous flux output, easy installation and lower manufacturing cost.

Description

A kind of LED bulb lamp

technical field

The invention relates to the field of lighting, in particular to an LED bulb lamp.

Background technique

LED lighting sources have long service life, energy saving, safety, green environmental protection; rich colors and miniaturization are called the next generation of light sources and have attracted attention. Now that energy-saving technologies are constantly being updated, LED lights will definitely become the main force in the lighting industry in the future. In addition As a representative of new energy, LED is widely used in various occasions and is gradually replacing traditional incandescent lamps and halogen lamps in various lighting fields. It will produce a lot of light decay, which shortens the service life of LED bulbs in a disguised form, and limits the application range of LED bulbs in the lighting industry to a certain extent.

Moreover, the current LED bulb lamps have a small luminous angle, and LEDs are generally placed in a sealed space to dissipate heat through metal conduction, basically using die-casting materials. Heavy, it will produce a load on the lamp holder, so it will cause the lamp holder to loosen and affect safety. In addition, heat dissipation is an important factor restricting the development of LED lights at this stage, especially for high-power LED lights. The heat is also increased at the same time. The heat generated by the LED cannot be dissipated quickly, which leads to an increase in the junction temperature of the LED, and the level of the junction temperature of the LED directly affects the light output efficiency of the LED, the service life and reliability of the components, that is to say, the heat dissipation and the luminous angle limit the Wide application of LED bulb lamps.

Therefore, there are defects in the prior art and need to be improved.

Contents of the invention

The technical problem to be solved by the present invention is to provide a new type of LED bulb lamp, which has good heat dissipation effect, large luminous angle and low manufacturing cost.

The technical scheme of the present invention is as follows: an LED bulb lamp, which includes a lamp cap, a lamp holder, a drive circuit, a radiator, a heat dissipation ring, a heat conduction column, a heat conduction sheet, a flexible circuit board, several light-emitting diodes, and a lampshade; the lamp holder fixedly mounted on the lamp holder; one end of the heat sink is fixedly mounted on the lamp holder, the heat sink has a tubular portion, the outer wall of which is provided with a number of heat sinks with preset shapes, and the inner cavity accommodates the drive circuit; One end of the drive circuit is fixed on the lamp holder; the other end of the radiator is provided with a mounting ring, and the mounting ring is provided with internal threads and external threads; The installation ring; the heat conduction column is fixedly installed on the installation ring through the internal thread; the heat conduction column is provided with a column part and an expansion head, and the heat conduction sheet is attached to the heat conduction column and at least partially covers The outside of the heat conduction column; the flexible circuit board is mounted on the heat conduction sheet, the flexible circuit board is provided with a number of pads, and each of the light emitting diodes is fixedly installed on the corresponding pads; the heat dissipation ring is also An annular groove is provided, and the lampshade is fixedly installed in the annular groove.

Preferably, in the LED bulb lamp, the heat conduction column is provided with twenty-five light-emitting surfaces, including an octagon at the top, eight upper trapezoids adjacent to one side of the octagon, and each of the The upper trapezoids correspond to the eight lower trapezoids adjacent to each other, and the eight quadrilaterals respectively adjacent to each of the lower trapezoids; the heat conducting sheet is correspondingly mounted on the twenty-five light-emitting surfaces of the heat conducting column, And twenty-five light-emitting surfaces are correspondingly formed; the flexible circuit board is correspondingly mounted on the twenty-five light-emitting surfaces of the heat conducting sheet, and twenty-five light-emitting surfaces are correspondingly formed.

Preferably, in the LED bulb lamp, the octagon is a regular octagon, the trapezoid is an isosceles trapezoid, and the quadrilateral is a rectangle.

Preferably, in the LED bulb lamp, each of the welding pads is evenly arranged on twenty-five light-emitting surfaces according to a preset area ratio.

Preferably, in the LED bulb lamp, the preset shape includes an umbrella-shaped section, a straight line and a combination thereof.

Preferably, in the LED bulb lamp, the heat conduction column, the heat conduction sheet, and the flexible circuit board are respectively provided with a first heat dissipation hole, a second heat dissipation hole, The third heat dissipation hole, the positions of the three coincide with each other, are used to form a heat dissipation through hole as a whole.

Preferably, in the LED bulb lamp, the heat dissipation ring is further provided with a plurality of fourth heat dissipation holes.

Preferably, in the LED bulb lamp, a plurality of fifth heat dissipation holes are further provided on the outer wall of the heat dissipation body.

Preferably, in the LED bulb lamp, heat-conducting silica gel is provided at least at one of the following installation locations, and the installation locations include: the installation location of the lamp holder and the lamp holder, the installation location of the heat sink and the lamp holder, The installation position of the heat dissipation ring and the installation ring, the installation position of the heat conduction column and the installation ring, and the installation position of the lampshade and the annular groove.

Preferably, in the LED bulb lamp, the heat conduction sheet is provided with double-sided heat conduction glue.

Preferably, in the LED bulb lamp, the lamp holder is provided with a positioning piece, a locking pin, a drive circuit locking slot, and a special slot for outlet; Buckle fixed; the drive circuit card slot is used to fix one end of the drive circuit; the special outlet slot is used to lead an input power line of the drive circuit around the surface of the lamp holder, and screw it tightly between the lamp cap and the lamp holder.

By adopting the above scheme, the present invention realizes the LED bulb lamp with wide-angle light emission, and the lamp has high heat dissipation effect, thereby prolonging the service life and reducing light decay, and the driving circuit is far away from the light-emitting diode, thereby effectively reducing the surface temperature of electronic components. , so that the service life of the driving circuit is longer, and has higher luminous flux output, and is easy to install, and has lower manufacturing cost.

Description of drawings

Fig. 1A is a three-dimensional schematic diagram of an LED bulb lamp according to an embodiment of the present invention;

FIG. 1B is a schematic diagram of the application of FIG. 1A;

Fig. 2 is an exploded schematic diagram of an LED bulb lamp according to an embodiment of the present invention;

Fig. 3 is a cross-sectional view of an LED bulb lamp according to an embodiment of the present invention;

Fig. 4 is a three-dimensional enlarged view of a light-transmitting cover of an LED bulb lamp according to an embodiment of the present invention;

Fig. 5 is a three-dimensional enlarged view of a screw socket of an LED bulb lamp according to an embodiment of the present invention;

Fig. 6A is a three-dimensional enlarged view of a flying saucer radiator of an LED bulb lamp according to an embodiment of the present invention;

Fig. 6B is a schematic diagram of another direction of the flying saucer cooling body of Fig. 6A;

Fig. 7A is a three-dimensional enlarged view of a spiral cooling ring of an LED bulb lamp according to an embodiment of the present invention;

FIG. 7B is a schematic diagram of another direction of the spiral cooling ring of FIG. 7A;

Fig. 8 is a three-dimensional enlarged view of a mushroom heat-conducting column of an LED bulb lamp according to an embodiment of the present invention;

Fig. 9 is a three-dimensional enlarged view of the light-emitting diode of the LED bulb lamp and the flexible FPC circuit board welded according to an embodiment of the present invention;

Fig. 10 is a three-dimensional enlarged view of the embodiment of Fig. 9 pasted on a high-thermal-conductivity special-shaped heat-conducting sheet;

Fig. 11 is a three-dimensional enlarged view of the high thermal conductivity special-shaped heat conduction sheet described in Fig. 10;

Fig. 12 is a three-dimensional enlarged view of the high thermal conductivity special-shaped heat conduction sheet in Fig. 11 pasted on the mushroom heat conduction column;

Fig. 13 is a three-dimensional enlarged view of a standard lamp holder of an LED bulb lamp according to an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

An embodiment of the present invention is an LED bulb lamp, which includes a lamp cap, a lamp holder, a driving circuit, a radiator, a radiator ring, a heat conduction column, a heat conduction sheet, a flexible circuit board, several light emitting diodes, and a lampshade.

The lamp holder is fixedly installed on the lamp holder; for example, the lamp holder is screwed and fixed on the lamp holder, or the lamp holder is buckled and fixed on the lamp holder. In this way, it is not only easy to install, but also easy to maintain. Preferably, heat-conducting silica gel is provided at the installation part of the lamp holder and the lamp cap, that is, during installation or after installation, heat-conducting silica gel is filled in the gap between the two, so as to enhance the heat dissipation of the conduction mode and improve the heat dissipation effect; At the same time, the use of thermally conductive silica gel with low viscosity does not hinder disassembly during maintenance.

One end of the radiator is fixedly mounted on the lamp holder. For example, a first slot is provided on the lamp holder, and a second slot corresponding to the position is provided at one end of the radiator. The first slot matches the second slot. For example, the first card slot and the second card slot are snap-connected and fixed, thereby fixing the heat sink on the lamp holder; this is easy to install and also easy to disassemble the heat sink, so that when the LED bulb fails , easy to replace failed components. Preferably, heat-conducting silica gel is provided at the installation position of the radiator and the lamp holder.

The heat sink has a tubular portion, the outer wall of which is provided with a plurality of heat sinks of preset shapes, and the inner cavity accommodates the driving circuit; that is, for example, the heat sink is hollow cylindrical. For example, the preset shape is a sheet-like combination; preferably, the preset shape includes an umbrella-shaped cross section, a straight line and a combination thereof. Preferably, the heat sink of the preset shape is shown in Figure 6A and Figure 6B,

One end of the driving circuit is fixedly arranged on the lamp holder, for example, the lamp holder is provided with a slot, and one end of the driving circuit is inserted into the slot and fixed; another example, one end of the driving circuit is glued and fixed on the lamp holder; as another example, one end of the driving circuit is buckled and fixed on the lamp holder. Preferably, the other end of the drive circuit is fixedly arranged on the inner wall of the heat sink, for example, a slot is also provided on the inner wall of the heat sink, and the other end of the drive circuit is inserted into the slot of the heat sink and fixed; preferably, the inner cavity of the radiator is designed according to the shape and size of the driving circuit, so as to place the driving circuit in the inner cavity and maintain its position without displacement. For example, the lamp holder is provided with a positioning piece, a locking pin, a drive circuit slot, and a special slot for the outlet; the positioning piece and the locking pin are respectively buckled and fixed with the positioning slot and the locking slot of the radiator; One end of the drive circuit is fixed; the special slot for the outlet is used to lead an input power line of the drive circuit around the surface of the lamp holder, and it is screwed and fastened to the lamp holder and the lamp holder between.

As shown in Figure 6A, the other end of the radiator is provided with a mounting ring 4002, and the mounting ring is provided with internal threads and external threads; the heat dissipation ring is fixedly mounted on the mounting ring through the external threads; the The heat conduction column is fixedly installed on the installation ring through the internal thread; in this way, it is easy to install and disassemble. Preferably, the installation parts of the heat dissipation ring and the installation ring, and the installation parts of the heat conduction column and the installation ring are respectively provided with heat-conducting silica gel. Moreover, the heat dissipation ring is further provided with an annular groove, and the lampshade is fixedly installed in the annular groove. Preferably, heat-conducting silica gel is also provided at the installation position of the lampshade and the annular groove. That is to say, preferably, heat-conducting silica gel is provided at one or more of the following installation locations, the installation locations include: the installation location of the lamp holder and the lamp holder, the installation location of the heat sink and the lamp holder, the installation location of the lamp holder, the The installation position of the heat dissipation ring and the installation ring, the installation position of the heat conduction column and the installation ring, and the installation position of the lampshade and the annular groove. Preferably, a heat dissipation coating is provided on the inner wall of the lampshade.

The heat conduction column is provided with a column part and an expansion head, for example, a round hammer shape with a handle, for example, an octagonal hammer shape, or its shape can refer to a hammer weapon with a handle in ancient China, and all embodiments of the present invention are consistent with this No additional restrictions; the benefit of this design is the increased angle of the light emitting surface. The heat conduction sheet is mounted on the heat conduction column and at least partially covers the heat conduction column; for example, the heat conduction sheet covers the heat conduction column, including the outer wall of the column portion and the outer wall of the expansion head. That is to say, the heat conduction sheet is located on the outer surface of the heat conduction column, and partially or completely covers the outer surface of the heat conduction column, that is, the outer wall.

The flexible circuit board is mounted on the heat conducting sheet, the flexible circuit board is provided with a number of pads, and each of the light emitting diodes is fixedly mounted on the corresponding pad; for example, each pad is evenly distributed on the flexible circuit board , as another example, the distance between the pads is greater than a preset value, such as 5 mm, 7 mm, 10 mm and so on. Preferably, the heat conduction sheet is provided with double-sided heat conduction glue, one side is used to attach the heat conduction sheet to the heat conduction column, and the other side is used to attach the flexible circuit board to the heat conduction sheet.

An example is that the heat conduction column is provided with twenty-five light-emitting surfaces, including an octagon at the top, eight upper trapezoids adjacent to one side of the octagon, and eight upper trapezoids respectively adjacent to each of the upper trapezoids. Eight lower trapezoids, and eight quadrilaterals adjacent to each of the lower trapezoids; the heat conduction sheet is correspondingly mounted on the twenty-five light-emitting surfaces of the heat conduction column, and forms twenty-five Light-emitting surface: the flexible circuit board is correspondingly mounted on the twenty-five light-emitting surfaces of the heat-conducting sheet, and twenty-five light-emitting surfaces are correspondingly formed. Preferably, as shown in FIG. 8 , the octagon is a regular octagon, the trapezoid is an isosceles trapezoid, and the quadrilateral is a rectangle. That is, the upper trapezoid and the lower trapezoid are respectively isosceles trapezoids. For example, the included angle between a regular octagon and any upper trapezoid is 110 to 140 degrees, the included angle between any upper trapezoid and its adjacent lower trapezoid is 80 to 150 degrees, and the included angle between any lower trapezoid and its adjacent rectangle is 110 to 140 degrees Spend. Preferably, the included angle between the regular octagon and any upper trapezoid is 120 degrees. Preferably, the included angle between any upper trapezoid and its adjacent lower trapezoid is 120 degrees. Preferably, the included angle between any lower trapezoid and its adjacent rectangle is 120 degrees. Preferably, the upper trapezoid and the lower trapezoid are the same isosceles trapezoid.

Preferably, each of the pads is uniformly arranged on twenty-five light-emitting surfaces according to a preset area ratio. For example, the preset area ratio is the number of pads to the number of square centimeters. For example, the preset area ratio is 1 pad: 1 square centimeter, that is, on each light-emitting surface of the flexible circuit board, a pad is provided for at least one square centimeter; no pad is provided for less than one square centimeter; 1.9 square centimeters One pad is set for a centimeter; two pads are set for a square centimeter, and so on. As another example, the preset area ratio is 1 pad: 0.6 square centimeters, that is, on each light-emitting surface of the flexible circuit board, at least 0.6 square centimeters is provided with a pad; if it is less than 0.6 square centimeters, no pad is provided; 2.5 4 pads are set for square centimeters, 1 pad is set for 1.1 square centimeters; and so on.

Preferably, the heat conduction column, the heat conduction sheet, and the flexible circuit board are respectively provided with a first heat dissipation hole, a second heat dissipation hole, and a third heat dissipation hole at a corresponding position in the middle of the octagon, and the positions of the three Coincident for integrally forming a thermal via. Preferably, the heat dissipation through hole is a round hole, that is, the first heat dissipation hole, the second heat dissipation hole, and the third heat dissipation hole are the same round hole. Preferably, as shown in Fig. 9, Fig. 11 and Fig. 12, the heat conduction column, the heat conduction sheet, and the flexible circuit board are respectively located at the same position in the center of the regular octagon, and the same position and the same size are set. The first cooling hole, the second cooling hole, and the third cooling hole. Preferably, as shown in FIG. 7A and FIG. 7B , the heat dissipation ring is further provided with a plurality of fourth heat dissipation holes; and/or, the outer wall of the heat dissipation body is further provided with a plurality of fifth heat dissipation holes. In this way, it is beneficial to the convection of internal and external air, and enhances the heat dissipation performance.

As another example, another embodiment of the present invention is: a new wide-angle light-emitting LED bulb lamp, said wide-angle light-emitting LED bulb lamp includes a lamp cap, a screw lamp holder, a drive circuit, a flying saucer radiator, a spiral heat dissipation ring, Mushroom heat conduction columns, special-shaped heat conduction sheets, flexible printed circuit boards (FPC, Flexible Printed Circuit Board), light emitting diodes (LEDs), light-transmitting covers and other components, as shown in Figure 1A, the light emitting diodes are evenly distributed in different directions and angles. Distributed on the 25 surfaces of the mushroom heat-conducting column, the light rays are interlaced and intersected to ensure that the main light-emitting area of the LED bulb lamp is located in the center of the light-transmitting cover, so that the maximum light-emitting angle of the LED bulb lamp can reach a maximum limit of more than 300° and emit light. The effect is more even and transparent. Preferably, the light-transmitting cover is a high-temperature-resistant glass or PC cover; preferably, the spiral heat dissipation ring has a card slot and is bonded and fixed with the light-transmitting cover; The body is screwed and fixed; preferably, the M18 thread of the flying saucer heat sink is spirally connected with the mushroom heat-conducting column; the other end has a card slot inside and is fixed with the screw lamp holder; preferably, the screw lamp holder and The lamp caps are connected in a spiral; the threaded lamp holders and the lamp caps are equipped with corresponding matching threads; preferably, a layer of double-sided heat-conducting adhesive with high thermal conductivity is attached to the mushroom heat-conducting column, and the light-emitting diode (LED) and the flexible FPC After the circuit board is welded, it is fixed on the special-shaped heat-conducting sheet, so that the three are integrated; preferably, the heat-conducting column, the radiator, and the heat-dissipating ring are closely combined to form a heat-conducting inner cavity; compared with the prior art , The LED bulb lamps described in the various embodiments of the present invention have good heat dissipation effects and a large light-emitting angle, which can usually be set at more than 300°, and the manufacturing cost is low.

Various embodiments of the present invention and their partial enlarged schematic diagrams are shown in Figures 1 to 13, please refer to Figure 1, an embodiment provides a wide-angle light-emitting LED bulb lamp, including a lamp base 100, a screw lamp holder 200, Drive circuit 300, flying saucer heat sink 400, spiral heat dissipation ring 500, mushroom heat conduction column 600, special-shaped heat conduction sheet 700, flexible FPC circuit board 800, light-emitting diode 900, light-transmitting cover 1000 and other components, as shown in Figure 2. Figure 3 is a schematic cross-sectional view thereof. The following is a detailed description according to the process flow.

As shown in Figure 9, put the special steel mesh fixture on the side of the flexible FPC circuit board 800 with a round hole 8002 in the middle, and brush the solder paste evenly on the solder pads of the flexible FPC circuit board 800, and put the The light emitting diode 900 is pasted on the pad of the flexible PFC circuit board 800 corresponding to the pad, and the light emitting diode 900 is soldered to the flexible FPC board 800 through the reflow soldering equipment.

As shown in Figure 11, a specially designed stamping die is used to punch a heat conduction sheet with high thermal conductivity into a special-shaped heat conduction sheet 700. Both sides of the special-shaped heat conduction sheet 700 have strong adhesion and are covered with a layer of protective film. There are round holes 7001 to facilitate the circulation of wires and airflow.

As shown in FIG. 12 , remove the protective film on any side of the special-shaped heat conduction sheet 700 , and paste the special-shaped heat conduction sheet 700 on the mushroom heat conduction pillar 600 corresponding to the 25 sides on the mushroom heat conduction pillar 600 .

As shown in Fig. 9 and Fig. 10, the soldered flexible FPC circuit board 800 and light emitting diode 900, and the special-shaped heat conduction sheet 700 pasted on the mushroom heat conduction column 600 are flat and face to face, and the flexible FPC The side 8001 of the circuit board without pads is closely pasted on the special-shaped heat conducting sheet 700 .

As shown in Figure 6A, an M18 thread 4002 and an M35 thread 4001 are provided at the upper end of the flying saucer heat sink 400, as shown in Figure 6B, a positioning groove 4004 and a locking groove 4003 are provided at the inner hollow position of the lower end, for example, 6063 The high-quality aluminum material is stretched by a special mold, and the flying saucer cooling body 400 is formed by high-precision digital machine finishing. The side is like a smooth column, which is similar to a flying saucer. The process treatment makes it accelerate heat conduction and greatly prolongs the service life of the lamp. Referring to Figure 8, the M18 thread 4002 of the flying saucer heat sink 400 is connected to the M18 thread 6002 on the mushroom heat conduction column 600, and there will be a layer of colloid filling the gap of the thread at the screw joint, and the colloid has a high heat transfer function, making it easier to conduct heat. Combined with Figure 7B, the M35 thread 4001 of the flying saucer heat sink 400 is screwed with the M35 thread 5004 on the spiral heat dissipation ring 500, making the heat dissipation part of the entire product more beautiful; The positioning piece 2003 on the tooth lamp holder 200 is interlocked with the locking pin 2004, so that the screw lamp holder 200 does not rotate and does not loosen;

As shown in Figure 7A and Figure 7B, the spiral heat dissipation ring 500 also adopts an innovative design, and 12 through holes 5002 with a diameter of 1.8MM are evenly distributed on a certain circumference of the heat dissipation ring, so that the inside of the LED bulb lamp can communicate with the outside. , the heat generated by the LED luminescence passes through the through hole to form gas convection with the air, which accelerates the heat conduction of the entire LED bulb and prolongs the service life of the LED and power devices. An annular groove 5003 is specially designed on the upper surface of the spiral cooling ring 500. Referring to FIG. 4, the function of this annular groove 5003 is to enable the port 10001 of the light-transmitting cover 1000 to extend into the annular groove 5003 to form a mutual fit. It is filled with a kind of highly transparent organic silica gel, which is both beautiful and firm; a through hole 5001 with a diameter of 23MM is designed in the middle of the spiral heat dissipation ring 500, and this through hole 5001 covers the connection of the M18 thread to allow it to enter the mushroom for heat conduction The column 600, the flying saucer heat sink 400, and the spiral heat dissipation ring 500 are closely combined to form a heat conduction inner cavity.

As shown in Figure 8, the unique design of the mushroom heat conduction column 600 of this application is made of high-quality aluminum material after forging and finishing with a specific mold. On the 25 surfaces, the light rays are interlaced and intersected to ensure that the main light-emitting area of the LED bulb is located in the center of the light-transmitting cover, so that the light-emitting angle of the LED bulb lamp reaches the maximum limit, and the luminous effect is more uniform and thorough. A through hole 6001 with a diameter of 5MM is designed in the middle for the convenience of wire passing, and it also plays the role of air convection to promote heat dissipation.

And, the electronic components are welded into a complete drive circuit 300 according to the preset position layout diagram of the drive circuit PCB components, and its corresponding parameters are tested, such as current, voltage, power, power factor, etc.; in the drive circuit 300, The PCB board is provided with a wide end and a narrow end, the wide end is the secondary, and the narrow end is the primary; the secondary is divided into positive and negative poles, and its positive and negative poles are respectively connected to the positive and negative poles on the flexible FPC circuit board 800; the primary is not divided into positive and negative poles , used to connect to the power supply; as shown in Figure 5 and Figure 13, a special outlet slot 2002 on the screw lamp holder 200 protrudes up and surrounds the surface of the screw lamp holder 200, and the screw 1001 on the lamp holder 100 It is screwed and fastened, and the other one is directly led out from the top of the lamp cap 100, and the top lamp cap thumbtack 1002 is pressed and fastened; or, the primary is divided into positive and negative poles for connecting to the power supply.

As shown in Figure 5, the screw lamp holder 200 specially designed by this application is made of PC plastic white fireproof type, its flame retardant performance reaches UL94V-0, and the different parts of the screw lamp holder 200 are designed with positioning Sheet 2003, snap pin 2004, PCB slot 2001, special slot 2002 for outgoing wires; in combination with Fig. 6A and Fig. 6B, positioning sheet 2003, snap pin 2004 and positioning slot 4004 and snap slot 4003 on flying saucer radiator 400 After interlocking, the threaded lamp holder 200 does not loosen and does not rotate; the PCB slot 2001 locks the upper primary end of the driving circuit 300, so that the driving circuit 300 does not move up and down and shake; the function of the outlet special slot 2002 is to drive Any one of the primary wires on the circuit 300 protrudes from here and wraps around the surface of the screw lamp holder 200 , and the lamp holder 100 tightens it by screwing. As shown in Figure 13, the lamp caps used are standard parts, for example, E27, E26 or B22 etc. can be selected.

As shown in Figure 4, the light-transmitting cover 1000 made of completely transparent or translucent glass or PC material has high light transmittance, so that the luminous flux will hardly decrease, ensuring the highest light output efficiency of the LED bulb lamp . And the shape of the light-transmitting cover 1000 is similar to that of a traditional incandescent light bulb, so that it has a similar feeling to the traditional incandescent light bulb, wherein the port 10001 of the light-transmitting cover 1000 can extend into the annular groove 5003 of the spiral cooling ring 500 to form a Cooperate with each other, the combination of the two is filled with a kind of highly transparent organic silica gel, which is both beautiful and firm; and the filling colloid does not decay.

By adopting the above-mentioned embodiments of the present invention, the structure is simpler, the parts and components are less, and the assembly is relatively simple, which can greatly reduce the manufacturing cost.

Furthermore, the embodiment of the present invention can also be an LED bulb lamp formed by combining the technical features of the above-mentioned embodiments.

It should be noted that the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present invention; and, for those of ordinary skill in the art, improvements can be made according to the above description Or transformation, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. A LED bulb lamp, characterized in that it comprises a lamp cap, a lamp holder, a drive circuit, a radiator, a heat dissipation ring, a heat conduction column, a heat conduction sheet, a flexible circuit board, several light emitting diodes, and a lampshade; The lamp holder is fixedly installed on the lamp cap; One end of the heat sink is fixedly mounted on the lamp holder, the heat sink has a tubular portion, the outer wall of which is provided with a plurality of heat sinks of preset shapes, and the inner cavity accommodates the driving circuit; One end of the drive circuit is fixed on the lamp holder; The other end of the radiator is provided with a mounting ring, and the mounting ring is provided with internal threads and external threads; The heat dissipation ring is fixedly installed on the mounting ring through the external thread; The heat conduction column is fixedly installed on the installation ring through the internal thread; The heat conduction column is provided with a column part and an expansion head, and the heat conduction sheet is mounted on the heat conduction column and at least partially covers the heat conduction column; The flexible circuit board is mounted on the heat conducting sheet, the flexible circuit board is provided with a plurality of pads, and each of the light-emitting diodes is fixedly mounted on the corresponding pads; The heat dissipation ring is also provided with an annular groove, and the lampshade is fixedly installed in the annular groove. 2. The LED bulb lamp according to claim 1, wherein the thermal conduction column is provided with twenty-five light-emitting surfaces, including an octagon at the top and eight upper trapezoids adjacent to one side of the octagon respectively. , eight lower trapezoids adjacent to each of the upper trapezoids in one-to-one correspondence, and eight quadrilaterals adjacent to each of the lower trapezoids in one-to-one correspondence; The heat conducting sheet is correspondingly mounted on the twenty-five light-emitting surfaces of the heat-conducting column, and forms twenty-five light-emitting surfaces correspondingly; The flexible circuit board is correspondingly mounted on the twenty-five light-emitting surfaces of the heat-conducting sheet, and twenty-five light-emitting surfaces are correspondingly formed. 3. The LED bulb lamp according to claim 2, wherein the octagon is a regular octagon, the trapezoid is an isosceles trapezoid, and the quadrilateral is a rectangle. 4. The LED bulb lamp according to claim 3, wherein each of the welding pads is evenly arranged on twenty-five light-emitting surfaces according to a preset area ratio. 5. The LED bulb lamp according to claim 2, wherein the heat conduction column, the heat conduction sheet, and the flexible circuit board are each provided with a first heat dissipation hole at a corresponding position in the middle of the octagon , the second heat dissipation hole, and the third heat dissipation hole, the positions of the three coincide to form a heat dissipation through hole as a whole. 6 . The LED bulb lamp according to claim 5 , wherein the heat dissipation ring is further provided with a plurality of fourth heat dissipation holes; or, the outer wall of the heat dissipation body is further provided with a plurality of fifth heat dissipation holes. 7 . The LED bulb lamp according to claim 1 , wherein the preset shape includes an umbrella-shaped cross section, a linear shape and a combination thereof. 8. The LED bulb lamp according to any one of claims 1 to 7, characterized in that at least one of the following installation parts is provided with heat-conducting silica gel, and the installation part includes: the lamp holder and the lamp cap installation part, the The mounting position of the radiator and the lamp holder, the mounting position of the heat dissipation ring and the mounting ring, the mounting position of the heat conducting column and the mounting ring, and the mounting position of the lampshade and the annular groove. 9. The LED bulb lamp according to claim 8, wherein the heat conducting sheet is provided with double-sided heat conducting glue. 10. The LED bulb lamp according to claim 9, characterized in that, the lamp holder is provided with a positioning piece, a locking pin, a drive circuit slot, and a special slot for the outlet; the positioning piece, the locking pin and the positioning of the radiator respectively The slot and the card position slot are snapped and fixed; the drive circuit card slot is used to fix one end of the drive circuit; the special outlet slot is used to lead an input power line of the drive circuit around the surface of the lamp holder, It is screwed and fastened between the lamp cap and the lamp holder.

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