CN116437647A

CN116437647A - External driving power supply for LED illumination lamp

Info

Publication number: CN116437647A
Application number: CN202310649459.3A
Authority: CN
Inventors: 张维一; 张金; 刘进良; 王静
Original assignee: Shenzhen Zhengyuan Technology Co ltd
Current assignee: Shenzhen Zhengyuan Technology Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-07-14

Abstract

The invention relates to the technical field of lighting equipment, in particular to an external driving power supply for an LED lighting lamp, which comprises a main body bin, wherein an upper cover is arranged at the top of the main body bin, a bottom bin is arranged at the bottom of the main body bin, a first inner bin is arranged in the main body bin, a second inner bin is arranged at the middle position of the bottom in the first inner bin, the bottom end of the second inner bin is communicated with the inner top of the bottom bin, a fan is arranged in the second inner bin, and a circuit board assembly is arranged in the first inner bin. The invention controls the fan to rotate, forces the air in the first inner bin to flow back to the first inner bin through the square hole, the connecting hole and the first air transmission hole after being conveyed to the bottom bin, forms the inner circulation of the air in the main bin, gradually transfers the heat in the main bin to the bottom bin in the process, and dissipates the heat to the outside through the bottom bin and the cooling fins at the bottom of the bottom bin, thereby being beneficial to improving the heat dissipation effect of the whole external driving power supply.

Description

External driving power supply for LED illumination lamp

Technical Field

The invention relates to the technical field of lighting equipment, in particular to an external driving power supply for an LED lighting lamp.

Background

The LED lighting lamp has various modeling and lighting effects, is widely applied to various lighting occasions, and when the LED lighting lamp is used, the power supply is required to be converted into specific voltage and current to drive the LEDs to emit light, and the LED lighting lamp is often connected with a plurality of groups for use, so that the external driving power supply can fully ensure the normal lighting of the plurality of groups of LED lighting lamps.

The external driving power supply for the current LED lighting lamp is generally used for directly wrapping a driving power supply main board through a shell, and the heat dissipation effect of the external driving power supply is greatly influenced although the tightness of the whole external driving power supply can be improved; when the external environment temperature is high, the heat dissipation effect of the external driving power supply cannot be further improved according to the actual use environment; meanwhile, the shells of the external driving power supply are usually fixedly connected through screws, and when parts inside the external driving power supply are required to be overhauled and maintained, the shells are difficult to disassemble and install rapidly, so that the convenience of overhauling and maintenance of the whole external driving power supply is reduced.

Disclosure of Invention

The invention aims to provide an external driving power supply for an LED lighting lamp, which is used for solving the related problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: an external driving power supply for an LED lighting lamp comprises a main body bin, wherein an upper cover is arranged at the top of the main body bin, and a bottom bin is arranged at the bottom of the main body bin;

the inside of main part storehouse is provided with first interior storehouse, and the intermediate position department of the interior bottom of first interior storehouse is provided with the second and is gone up the storehouse, the bottom of second interior storehouse communicates with the interior top of end storehouse, the internally mounted in second interior storehouse has the fan, the inside of first interior storehouse is provided with circuit board subassembly, twelve sets of square holes and the arc hole that communicate with the interior top of end storehouse are evenly seted up to the edge position department of the interior bottom of main part storehouse, twelve sets of first gas-supply hole and second gas-supply hole have evenly been seted up on the top outside the first interior storehouse, and first gas-supply hole and second gas-supply hole interval distribution, the holding ring is installed on the top of first interior storehouse inboard, the top of holding ring is provided with circular frame, and the inboard of circular frame is provided with the filter screen, six sets of card strip, twelve sets of inlet port have evenly been seted up on the top outside the main part storehouse;

the inner bottom of the bottom bin is provided with a second circular plate, the second circular plate is uniformly provided with second air outlet holes, the inner bottom of the bottom bin is uniformly provided with first air outlet holes matched with the second air outlet holes, twelve groups of connecting columns matched with the arc-shaped holes are uniformly arranged at the edge position of the top of the second circular plate, the top ends of the connecting columns penetrate through the arc-shaped holes and extend to the inside of the main bin, and the bottom of the bottom bin is uniformly provided with cooling fins;

the servo motor is installed to intermediate position department at upper cover top, and servo motor's output shaft extends to the interior top in main part storehouse and installs first plectane, the motor storehouse is installed to intermediate position department at upper cover top, the rotation ring is installed to edge position department at first plectane bottom, twelve groups of jacks with spliced pole looks adaptation have evenly been seted up to the bottom of rotation ring, and the spring is installed at the interior top of jack, the connecting hole that mutually support with inlet port and square hole has evenly been seted up to the bottom of rotation ring, six groups of draw-in grooves mutually support with the card strip have evenly been seted up to the inboard bottom of upper cover.

Preferably, the circuit board assembly comprises supporting columns, three groups of supporting columns are uniformly arranged at the edge position of the bottom in the first inner bin, the tops of the three groups of supporting columns are provided with a PCB (printed circuit board) together, the PCB is located below the round frame, three groups of fixing screws matched with the supporting columns are uniformly arranged at the edge position of the top of the PCB in a threaded manner, a through hole is formed in the center position of the top of the PCB, and the top of the PCB is provided with a temperature sensor and a humidity sensor respectively.

Preferably, twelve groups of mounting grooves are uniformly formed in the outer ring of the rotating ring, and rubber backing plates matched with the air inlet holes are mounted in the mounting grooves.

Preferably, four groups of supporting legs are uniformly arranged at the bottom of the bottom bin, and a round backing plate is arranged at the bottom of each supporting leg.

Preferably, the top of the inner side of the first inner bin is uniformly provided with two groups of limit blocks, and the outer ring of the round frame is symmetrically provided with limit grooves matched with the limit blocks.

Preferably, a sealing ring matched with the top of the main body bin is arranged at the edge position of the inner top of the upper cover.

Preferably, the intermediate position department at upper cover top is provided with annular thread groove, the bottom in the motor storehouse outside is provided with the connecting thread that mutually supports with annular thread groove, motor storehouse passes through connecting thread and annular thread groove and the top fixed connection of upper cover.

Preferably, the pore sizes of the first air outlet hole and the second air outlet hole are identical, and a screen is arranged in the first air outlet hole.

Preferably, a rotating shaft is arranged at the central position of the bottom in the bottom bin, and the top end of the rotating shaft is fixedly connected with the central position of the bottom of the second circular plate.

Preferably, the depth of the limiting groove is larger than the length of the limiting block, and one side, close to each other, of the two groups of limiting grooves is in an arc-shaped structure.

Compared with the prior art, the invention provides an external driving power supply for an LED lighting lamp, which has the following beneficial effects:

1. the invention controls the fan to rotate, forces the air in the first inner bin to flow back to the first inner bin through the square hole, the connecting hole and the first air transmission hole after being conveyed to the bottom bin, forms the inner circulation of the air in the main bin, gradually transfers the heat in the main bin to the bottom bin in the process, and dissipates the heat to the outside through the bottom bin and the cooling fins at the bottom of the bottom bin, thereby being beneficial to improving the heat dissipation effect of the whole external driving power supply.

2. When the external driving power supply is used in a high-temperature environment, the square hole is not communicated with the inside of the main body bin any more through rotating the rotating ring, the inside of the main body bin is communicated with the external environment through the air inlet hole, the connecting hole and the second air transmission hole in sequence, the fan forces external air to enter the inside of the second inner bin, the PCB circuit board in the first inner bin is subjected to air blowing and cooling in the process, and then the air in the second inner bin is directly discharged to the external environment through the second air outlet hole and the first air outlet hole, so that the external circulation flow of the air in the main body bin is realized, and the heat dissipation effect of the whole external driving power supply is further improved.

3. According to the invention, the upper cover is covered on the main body bin, the connecting column is inserted into the corresponding jack, then the upper cover is pressed downwards and rotated anticlockwise, the clamping strip is clamped into the clamping groove, the upper cover is fixedly connected with the main body bin, the spring is stressed to shorten and store elastic potential energy, the friction between the clamping strip and the inner wall of the clamping groove is improved, the connection stability of the upper cover and the main body bin is ensured, and the upper cover can be opened quickly by only manually pressing the upper cover downwards and rotating the upper cover clockwise during disassembly, so that the parts inside the external driving power supply are convenient to overhaul and maintain.

Drawings

FIG. 1 is a top cross-sectional view of a motor cartridge of the present invention;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is a schematic bottom view of the upper cover of the present invention;

FIG. 4 is a schematic perspective view of the body cartridge of the present invention;

FIG. 5 is a schematic top view of the body cartridge of the present invention;

FIG. 6 is a schematic top view of the filter screen of the main body of the invention after disassembly;

fig. 7 is a schematic top view of the main body of the invention after the PCB circuit board is disassembled;

FIG. 8 is a top cross-sectional view of the body cartridge and the rotating ring of the present invention;

FIG. 9 is a schematic top view of the bottom cartridge of the present invention;

FIG. 10 is a schematic top view of the second circular plate in the bottom compartment of the present invention after removal.

In the figure: 1. an upper cover; 11. a motor bin; 12. a servo motor; 13. a first circular plate; 14. a rotating ring; 15. a jack; 16. a spring; 17. a clamping groove; 18. a connection hole; 19. a rubber backing plate; 2. a main body bin; 21. a first inner bin; 211. a first gas delivery port; 212. a second gas delivery port; 213. a support ring; 214. a circular frame; 215. a limit groove; 216. a filter screen; 217. a limiting block; 22. clamping strips; 23. an air inlet hole; 24. a second inner bin; 241. a fan; 25. a support column; 26. a PCB circuit board; 261. a set screw; 262. a through hole; 263. a temperature sensor; 264. a humidity sensor; 27. square holes; 28. an arc-shaped hole; 3. a bottom bin; 31. support legs; 32. a heat sink; 33. a first air outlet hole; 34. a connecting column; 35. a second air outlet hole; 36. and a second circular plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-10, the present invention provides a technical solution: an external driving power supply for an LED lighting lamp comprises a main body bin 2, wherein an upper cover 1 is arranged at the top of the main body bin 2, and a bottom bin 3 is arranged at the bottom of the main body bin 2;

the inside of the main body bin 2 is provided with a first inner bin 21, the middle position of the inner bottom of the first inner bin 21 is provided with a second inner bin 24, the bottom end of the second inner bin 24 is communicated with the inner top of the bottom bin 3, the inside of the second inner bin 24 is provided with a fan 241, the inside of the first inner bin 21 is provided with a circuit board assembly, the edge position of the inner bottom of the main body bin 2 is uniformly provided with twelve groups of square holes 27 and arc holes 28 communicated with the inner top of the bottom bin 3, the top end of the outer side of the first inner bin 21 is uniformly provided with twelve groups of first air holes 211 and second air holes 212, the first air holes 211 and the second air holes 212 are distributed at intervals, the top end of the inner side of the first inner bin 21 is provided with a supporting ring 213, the top of the supporting ring 213 is provided with a round frame 214, the inner side of the round frame 214 is provided with a filter screen 216, the top end of the outer side of the main body bin 2 is uniformly provided with six groups of clamping bars 22, and the top of the outer side of the main body bin 2 is uniformly provided with twelve groups of air inlet holes 23;

the inner bottom of the bottom bin 3 is provided with a second circular plate 36, the second circular plate 36 is uniformly provided with second air outlet holes 35, the inner bottom of the bottom bin 3 is uniformly provided with first air outlet holes 33 mutually matched with the second air outlet holes 35, twelve groups of connecting columns 34 mutually matched with the arc-shaped holes 28 are uniformly arranged at the edge position of the top of the second circular plate 36, the top ends of the connecting columns 34 penetrate through the arc-shaped holes 28 and extend to the inside of the main bin 2, and the bottom of the bottom bin 3 is uniformly provided with cooling fins 32;

the servo motor 12 is installed to intermediate position department at upper cover 1 top, and servo motor 12's output shaft extends to the interior top of main part storehouse 2 and installs first plectane 13, motor storehouse 11 is installed to intermediate position department at upper cover 1 top, the rotation ring 14 is installed to edge position department at first plectane 13 bottom, twelve groups jack 15 with spliced pole 34 looks adaptation have evenly been seted up to the bottom of rotation ring 14, and spring 16 is installed at the interior top of jack 15, the connecting hole 18 mutually supporting with inlet port 23 and square hole 27 have evenly been seted up to the bottom of rotation ring 14, six groups draw-in groove 17 mutually supporting with card strip 22 have evenly been seted up to the inboard bottom of upper cover 1.

Further, the circuit board assembly comprises support columns 25, three groups of support columns 25 are uniformly arranged at the edge position of the inner bottom of the first inner bin 21, a PCB circuit board 26 is arranged at the top of the three groups of support columns 25, the PCB circuit board 26 is located below the round frame 214, three groups of fixing screws 261 matched with the support columns 25 are uniformly arranged at the edge position of the top of the PCB circuit board 26 in a threaded manner, a through hole 262 is formed in the center position of the top of the PCB circuit board 26, and a temperature sensor 263 and a humidity sensor 264 are respectively arranged at the top of the PCB circuit board 26.

Further, twelve groups of mounting grooves are uniformly formed in the outer ring of the rotating ring 14, rubber base plates 19 matched with the air inlets 23 are mounted in the mounting grooves, and the blocking effect of the rotating ring 14 on the air inlets 23 can be improved through the rubber base plates 19.

Further, four groups of supporting legs 31 are uniformly arranged at the bottom of the bottom bin 3, and round base plates are arranged at the bottoms of the supporting legs 31, so that the bottom of the bottom bin 3 is not in direct contact with the ground, and normal exhaust of the first air outlet holes 33 is avoided.

Further, two groups of limiting blocks 217 are uniformly arranged at the top end of the inner side of the first inner bin 21, and limiting grooves 215 matched with the limiting blocks 217 are symmetrically formed in the outer ring of the circular frame 214, so that the circular frame 214 can be stably placed on the supporting ring 213.

Further, the sealing ring matched with the top of the main body bin 2 is arranged at the edge position of the inner top of the upper cover 1, so that the sealing performance of the joint of the upper cover 1 and the main body bin 2 is improved.

Further, an annular thread groove is formed in the middle position of the top of the upper cover 1, connecting threads matched with the annular thread groove are formed in the bottom end of the outer side of the motor bin 11, the motor bin 11 is fixedly connected with the top of the upper cover 1 through the connecting threads and the annular thread groove, and the motor bin 11 can be taken down from the top of the upper cover 1 through spiral rotation of the motor bin 11, so that the servo motor 12 can be overhauled and maintained.

Further, the aperture sizes of the first air outlet hole 33 and the second air outlet hole 35 are identical, and the screen mesh is arranged in the first air outlet hole 33, so that air in the bottom bin 3 can be stably discharged to the external environment through the first air outlet hole 33 and the second air outlet hole 35, and the screen mesh can also reduce the amount of external dust entering the bottom bin 3.

Further, a rotating shaft is arranged at the central position of the inner bottom of the bottom bin 3, and the top end of the rotating shaft is fixedly connected with the central position of the bottom of the second circular plate 36, so that friction force between the second circular plate 36 and the inner bottom of the bottom bin 3 in the rotating process is reduced.

Further, the depth of the limiting groove 215 is greater than the length of the limiting block 217, and one side of the two groups of limiting grooves 215, which is close to each other, is in an arc structure, so that a wire connected with the PCB 26 conveniently passes through the limiting groove 215 and then extends to the outer side of 1, and the filtering effect of the filter screen 216 is not affected.

In embodiment 1, as shown in fig. 1-8, an inductance coil, a power transformer, a capacitor, an input end plate, an output end plate and a single chip microcomputer are further disposed on the PCB circuit board 26, the input end plate is electrically connected with a power supply circuit through a wire, the output end plate is used for stably supplying power to the LED lighting lamp through the wire, the single chip microcomputer controls the servo motor 12 and the fan 241 to work, when the temperature sensor 263 detects that the temperature inside the upper cover 1 reaches a predetermined value, the single chip microcomputer controls the fan 241 to start working, and when the humidity sensor 264 cooperates with the single chip microcomputer to detect that the air humidity inside the upper cover 1 is increased, the servo motor 12 is controlled to drive the rotating ring 14 to rotate, so that the rubber cushion plate 19 blocks the air inlet hole 23, and the air inside the upper cover 1 is enabled to flow in an internal circulation under the pushing of the fan 241, so that the safe use of electrical components inside the upper cover 1 is ensured.

In embodiment 2, as shown in fig. 1-8, after the upper cover 1 is opened from the main body bin 2, the circular frame 214 is manually taken out from the first inner bin 21 and subjected to ash cleaning treatment, then the PCB circuit board 26 is directly exposed, and then the three sets of fixing screws 261 are manually unscrewed to detach the PCB circuit board 26 from the three sets of support columns 25, so that the PCB circuit board 26 and the fan 241 can be overhauled and maintained.

In embodiment 3, as shown in fig. 1 to 10, the heat dissipation modes of the external driving power supply include an internal circulation heat dissipation mode and an external circulation heat dissipation mode, which are specifically as follows:

internal circulation heat dissipation mode: the air in the first inner bin 21 is conveyed into the bottom bin 3 through the fan 241, at this time, the first air outlet hole 33 and the second air outlet hole 35 are staggered, the air entering the bottom bin 3 can only sequentially return to the inside of the first inner bin 21 through the square hole 27, the connecting hole 18 and the first air conveying hole 211, and heat in the air is dissipated to the outside through the bottom bin 3 and the cooling fins 32 at the bottom of the bottom bin 3 in the process;

external circulation heat dissipation mode: outside air enters the first inner bin 21 after sequentially passing through the air inlet hole 23, the connecting hole 18 and the second air conveying hole 212, the surface of the PCB circuit board 26 in the first inner bin 21 is subjected to air blowing and cooling, then the air with heat is conveyed to the inner part of the bottom bin 3 through the fan 241, at the moment, the first air outlet hole 33 and the second air outlet hole 35 are mutually overlapped, the square hole 27 is not communicated with the inside of the connecting hole 18, so that the hot air entering the inner part of the bottom bin 3 can only be discharged to the outside environment through the second air outlet hole 35 and the first air outlet hole 33, the air external circulation flow is realized, and the heat dissipation effect of the external driving power supply can be further improved.

Working principle: before use, the device is powered on, when the humidity of the external air is higher, the servo motor 12 can be controlled to drive the first circular plate 13 to rotate anticlockwise, the rotating ring 14 rotates anticlockwise in the cavity between the main body bin 2 and the first inner bin 21, the rotating ring 14 drives the second circular plate 36 inside the bottom bin 3 to rotate anticlockwise together through the connection of the jack 15 and the connecting column 34, the connecting column 34 slides inside the arc-shaped hole 28, the rubber cushion plate 19 is caused to block the air inlet hole 23, the first air outlet hole 33 and the second air outlet hole 35 are dislocated, the interiors of the main body bin 2 and the bottom bin 3 are not communicated with the outside, namely, the internal circulation heat dissipation mode is achieved, then the fan 241 is controlled to drive the air inside the main body bin 2 to circulate in the interiors of the main body bin 2 and the bottom bin 3, the air with moisture is not allowed to enter the interiors of the main body bin 2, and under the condition that the humidity of the external air is lower, and the temperature is higher, the servo motor 12 is controlled to drive the first circular plate 13 to rotate clockwise, the heat dissipation mode of the external driving power supply is switched into the external circulation mode, the air entering the main body bin 2 is firstly, the air is cooled through the filter plate 216, then discharged from the filter plate 26 to the external air outlet hole and then discharged from the filter plate through the filter screen, and the filter plate 35 is cooled, and then cooled.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an external drive power supply for LED illumination lamps and lanterns, includes main part storehouse (2), its characterized in that: an upper cover (1) is arranged at the top of the main body bin (2), and a bottom bin (3) is arranged at the bottom of the main body bin (2);

the inside of main part storehouse (2) is provided with first interior storehouse (21), and the intermediate position department of the interior bottom of first interior storehouse (21) is provided with second interior storehouse (24), the bottom of second interior storehouse (24) communicates with the interior top of end storehouse (3), the internally mounted of second interior storehouse (24) has fan (241), the inside of first interior storehouse (21) is provided with circuit board assembly, twelve square hole (27) and arc hole (28) that communicate with the interior top of end storehouse (3) have evenly been seted up to the border position department of the interior bottom of main part storehouse (2), twelve first gas-supply hole (211) and second gas-supply hole (212) have evenly been seted up on the top in the outside of first interior storehouse (21), and first gas-supply hole (211) and second gas-supply hole (212) interval distribution, the top of the inboard of first interior storehouse (21) is installed and is supported ring (213), the top of supporting ring (213) is provided with circular frame (214), and the inboard is provided with square hole (27) and arc hole (28) that the top of end storehouse (2) is provided with, twelve groups of evenly open air inlet port (23) in the outside of main part (2);

the inner bottom of the bottom bin (3) is provided with a second circular plate (36), the second circular plate (36) is uniformly provided with a second air outlet hole (35), the inner bottom of the bottom bin (3) is uniformly provided with a first air outlet hole (33) matched with the second air outlet hole (35), twelve groups of connecting columns (34) matched with the arc-shaped holes (28) are uniformly arranged at the edge position of the top of the second circular plate (36), and the top ends of the connecting columns (34) penetrate through the arc-shaped holes (28) and extend to the inside of the main bin (2), and the bottom of the bottom bin (3) is uniformly provided with cooling fins (32);

the utility model discloses a motor vehicle seat, including upper cover (1), connecting column (34) looks adaptation jack (15), spring (16) are installed at the intermediate position department at upper cover (1) top, and the output shaft of servo motor (12) extends to the interior top of main part storehouse (2) and installs first plectane (13), motor storehouse (11) are installed to the intermediate position department at upper cover (1) top, rotation ring (14) are installed to the border position department at first plectane (13) bottom, twelve sets of jack (15) with spliced pole (34) looks adaptation are evenly seted up to the bottom of rotation ring (14), and spring (16) are installed at the interior top of jack (15), connecting hole (18) with inlet port (23) and square hole (27) mutually supporting are evenly seted up to the bottom of upper cover (1) inboard bottom evenly has seted up six sets of draw-in groove (17) with card strip (22) mutually supporting.

2. The external driving power supply for an LED lighting fixture of claim 1, wherein: the circuit board assembly comprises support columns (25), three groups of support columns (25) are uniformly arranged at the edge positions of the bottoms in the first inner bin (21), a PCB (printed circuit board) is arranged at the tops of the three groups of support columns (25) together, the PCB (26) is located below the round frame (214), three groups of fixing screws (261) matched with the support columns (25) are uniformly arranged at the edge positions of the tops of the PCB (26), through holes (262) are formed in the central positions of the tops of the PCB (26), and temperature sensors (263) and humidity sensors (264) are respectively arranged at the tops of the PCB (26).

3. The external driving power supply for an LED lighting fixture of claim 1, wherein: twelve groups of mounting grooves are uniformly formed in the outer ring of the rotating ring (14), and rubber backing plates (19) matched with the air inlet holes (23) are mounted in the mounting grooves.

4. The external driving power supply for an LED lighting fixture of claim 1, wherein: four groups of supporting legs (31) are uniformly arranged at the bottom of the bottom bin (3), and a round backing plate is arranged at the bottom of each supporting leg (31).

5. The external driving power supply for an LED lighting fixture of claim 1, wherein: two groups of limiting blocks (217) are uniformly arranged at the top end of the inner side of the first inner bin (21), and limiting grooves (215) matched with the limiting blocks (217) are symmetrically formed in the outer ring of the round frame (214).

6. The external driving power supply for an LED lighting fixture of claim 1, wherein: the edge position of the inner top of the upper cover (1) is provided with a sealing ring matched with the top of the main body bin (2).

7. The external driving power supply for an LED lighting fixture of claim 1, wherein: the middle position department at upper cover (1) top is provided with annular thread groove, the bottom in motor storehouse (11) outside is provided with the connecting thread that mutually supports with annular thread groove, motor storehouse (11) are through connecting thread and annular thread groove and the top fixed connection of upper cover (1).

8. The external driving power supply for an LED lighting fixture of claim 1, wherein: the aperture sizes of the first air outlet hole (33) and the second air outlet hole (35) are identical, and a screen is arranged in the first air outlet hole (33).

9. The external driving power supply for an LED lighting fixture of claim 1, wherein: a rotating shaft is arranged at the central position of the inner bottom of the bottom bin (3), and the top end of the rotating shaft is fixedly connected with the central position of the bottom of the second circular plate (36).

10. The external driving power supply for an LED lighting fixture of claim 5, wherein: the depth of the limiting grooves (215) is larger than the length of the limiting blocks (217), and one side, close to each other, of each group of limiting grooves (215) is in an arc-shaped structure.