CN109140257B

CN109140257B - LED lamp

Info

Publication number: CN109140257B
Application number: CN201811053022.9A
Authority: CN
Inventors: 葛成燕
Original assignee: DONGGUAN JUDING LIGHTING Inc
Current assignee: Dongguan Juding Lighting Inc.
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2020-01-10
Anticipated expiration: 2038-09-10
Also published as: CN109140257A

Abstract

The invention relates to the field of lamps, in particular to an LED lamp, which comprises a fixing structure, a limiting structure, an LED lamp, a sealing structure, a flow guide structure, a protective cover, a wiring hole, a cooling structure and a wire, wherein the fixing structure is arranged on the LED lamp; the fixed structure for mounting the lamp is provided with a cooling structure and an LED lamp; the fixed structure and the dustproof protective cover are sealed through a sealing structure; a plurality of limiting structures are circumferentially distributed on the fixed structure in an array manner; and the flow guide structure for guiding the gas in the cooling structure is abutted against the protective cover. The limiting structure on the fixing structure is matched with the flow guide structure, so that the flow guide structure and the protective cover are conveniently and temporarily fixed in the process of overhauling and maintaining the LED lamp, and the quality and the efficiency of overhauling and maintaining are greatly improved; the use of water conservancy diversion structure cooperation fixed knot structure, the effectual noise that reduces when cooling structure uses effectively prevents simultaneously that cooling structure from causing the injury to the user, has improved the security performance that uses, has improved space utilization efficiency.

Description

LED lamp

Technical Field

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

Background

The light emitting diode is called LED for short, and is made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N) and the like, so that the quality of life and work is improved, for example, an LED lamp fan is used, the temperature of the LED lamp is conveniently reduced, and the service life of the LED lamp is prolonged.

However, the traditional LED lamp is inconvenient to overhaul and maintain, the LED lamp is cooled by the aid of the fan, the space utilization efficiency is poor, noise is large in the using process, and the using safety is poor. In view of this, the present invention provides an LED lamp, which has the following features:

(1) according to the LED lamp, the limiting structure on the fixing structure is matched with the flow guide structure, so that the flow guide structure and the protective cover are conveniently and temporarily fixed in the process of overhauling and maintaining the LED lamp, and the quality and the efficiency of overhauling and maintaining are greatly improved.

(2) According to the LED lamp, the flow guide structure is matched with the fixing structure, so that the noise generated when the cooling structure is used is effectively reduced, and meanwhile, the cooling structure is effectively prevented from damaging users, the use safety performance is greatly improved, and the space utilization efficiency is improved.

(3) According to the LED lamp, the arrangement of the cooling structure is convenient for cooling the LED lamp, so that the service life of the LED lamp is greatly prolonged, indoor air is convenient to dredge, indoor ventilation is convenient, and the performance of the LED lamp is more perfect.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the LED lamp, the limiting structure on the fixing structure is matched with the flow guide structure for use, so that the flow guide structure and the protective cover are conveniently and temporarily fixed in the process of overhauling and maintaining the LED lamp, and the quality and the efficiency of overhauling and maintaining are greatly improved; the guide structure is matched with the fixing structure, so that the noise of the cooling structure in use is effectively reduced, and meanwhile, the cooling structure is effectively prevented from harming users, so that the use safety performance is greatly improved, and the space utilization efficiency is improved; the arrangement of the cooling structure is convenient for cooling the LED lamp, so that the service life of the LED lamp is greatly prolonged, and meanwhile, the indoor air is convenient to dredge, the indoor ventilation is convenient, and the performance of the LED lamp is more perfect.

The technical scheme adopted by the invention for solving the technical problems is as follows: an LED lamp comprises a fixing structure, a limiting structure, an LED lamp, a sealing structure, a flow guide structure, a protective cover, a wiring hole, a cooling structure and a wire; the cooling structure and the LED lamp are arranged on the fixing structure for mounting the lamp; the wiring hole for fixing power supply limiting penetrates through the fixing structure, and the wire penetrates through the wiring hole to be electrically connected with the LED lamp and the cooling structure; the fixing structure and the protective cover for dust prevention are sealed through the sealing structure; a plurality of limiting structures are circumferentially distributed on the fixed structure in an array manner; the gas diversion structure is used for guiding gas inside the cooling structure and is abutted against the protective cover, the diversion structure is abutted against the fixed structure, and the diversion structure is detachably connected with the limiting structure.

Specifically, the fixing structure comprises a fixing plate, a guide shaft, an installation sleeve and a drainage groove, a plurality of LED lamps are arranged, the LED lamps are equidistantly fixed on the installation sleeve, the installation sleeve is of a truncated cone-shaped structure, the drainage groove for drainage is formed in the side wall of the installation sleeve, the guide shaft of a cylindrical structure is fixed on the installation sleeve, the wiring hole penetrates through the guide shaft, and the disc-shaped fixing plate is fixed at one end, away from the installation sleeve, of the guide shaft; when the cable is used, the fixing plate is fixed on a wall body through a bolt, then a power line penetrates through the wiring hole, and the wire is connected with the power line; the wiring hole set up the effectual protection the wire, and then effectively prevent that the wire power cord from damaging, the installation cover is round platform shape structure, and the cooperation the use of drainage groove is convenient for right the cooling structure drainage, and then has improved ventilation heat dispersion greatly.

Specifically, the cooling structure comprises a driving wheel, a motor and fan blades, the driving wheel is rotatably connected with the guide shaft, the motor is fixed on the mounting sleeve, the wire is electrically connected with the motor, the motor is rotatably connected with the driving wheel, the driving wheel is meshed with the driving wheel, and the fan blades are arranged at one end, close to the fixing plate, of the driving wheel; when needs are to indoor cooling, the motor rotates, the motor passes through the drive wheel drives the drive wheel rotates, the drive wheel drives the flabellum rotates to promote air circulation, make gaseous blowing be in on the installation cover, promoted indoor air circulation, simultaneously be convenient for right the motor with the LED lamp cooling has improved the stability ability of lamps and lanterns greatly, the setting of drainage groove has increased with the air with the area of contact of installation cover has improved the cooling effect, the motor cooperation the drive wheel and its the use of drive wheel, and then has improved space utilization efficiency.

Specifically, the sealing structure comprises a first sealing ring, a clamping groove, a second sealing ring and a fixing ring, the clamping groove with a semicircular cross section is formed in the mounting sleeve, the first sealing ring is arranged in the clamping groove, the fixing ring is fixed on the protective cover, the second sealing ring is arranged at the bottom end of the fixing ring and clamped with the clamping groove, and the second sealing ring is clamped with the first sealing ring; after the overhaul, the second sealing washer with the draw-in groove block is right the inside of installation cover the LED lamp and its the motor carries out preliminary sealing, then first sealing washer with the second sealing washer block carries out secondary seal, thereby has improved the installation cover with dampproofing and waterproofing performance between the protective cover has improved the LED lamp and its the stability in utilization performance of motor.

Specifically, the flow guide structure comprises a plurality of air holes, a slide bar, a limiting bar, a flow guide sleeve and a flow guide hole, the flow guide sleeve is abutted against the fixed ring and the fixed plate, the cross section of the fixed ring is of a trapezoidal structure, one end, close to the fixed plate, of the flow guide sleeve is provided with the flow guide holes distributed in a semicircular circumferential array, the air holes with different angles are arranged in the circumferential direction of the outer part of the flow guide sleeve, the slide bar with an oval cross section and a storage space is fixed on the flow guide sleeve, the limiting bar penetrates through the flow guide sleeve and the slide bar, the end part of the limiting bar is provided with a groove with a regular hexagonal structure, and the limiting bar is rotatably connected with the flow guide sleeve; the flabellum rotates and makes the air follow the drainage hole is impressed the installation cover with between the water conservancy diversion cover, follow the water conservancy diversion cover the gas pocket blows off, to indoor cooling, the angle of gas pocket is different, has increased the heat transfer scope, has improved indoor radiating effect greatly, the cross section of retainer plate is trapezium structure, has increased the retainer plate with the area of contact of water conservancy diversion cover makes the protective cover is fixed more stable.

Specifically, the limiting structure comprises a plurality of sleeves and guide rods, the sleeves are distributed on the fixing plate in a circumferential array manner, the guide rods are arranged inside the sleeves, the slide rods are connected with the sleeves in a sliding manner, the slide rods are arranged between the guide rods and the sleeves, and the limiting rods are in threaded connection with the guide rods; maintain overhaul the LED lamp with during the motor, twist through the spanner and move the gag lever post, make the gag lever post with slide between the sleeve, until the slide bar roll-off completely the sleeve, then it is water conservancy diversion cover with the installation cover is not contradicted, then with one of them slide bar embedding one telescopic inside is twisted and is moved the gag lever post makes the gag lever post with threaded connection between the guide bar, temporarily will the water conservancy diversion structure is fixed on the sleeve, will the protective cover with water conservancy diversion cover block has avoided when overhauing the position higher, the water conservancy diversion structure with the protective cover is placed inconveniently, has improved the efficiency and the quality of overhauing the maintenance greatly, simultaneously the gag lever post with rotate between the water conservancy diversion cover and connect, avoided the gag lever post drops.

The invention has the beneficial effects that:

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a preheating structure of an LED lamp according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of the flow guide structure shown in FIG. 1;

FIG. 4 is a schematic view of the connection structure of the fixing structure and the cooling structure shown in FIG. 1;

fig. 5 is an enlarged view of the portion B shown in fig. 4.

In the figure: 1. fixed knot constructs, 11, the fixed plate, 12, the guiding axle, 13, the installation cover, 14, the drainage groove, 2, limit structure, 21, the sleeve, 22, the guide bar, 3, the LED lamp, 4, seal structure, 41, first sealing washer, 42, the draw-in groove, 43, the second sealing washer, 44, the retainer plate, 5, the water conservancy diversion structure, 51, the gas pocket, 52, the slide bar, 53, the gag lever post, 54, the water conservancy diversion cover, 55, the drainage hole, 6, the protective cover, 7, the wiring hole, 8, cooling structure, 81, the drive wheel, 82, the drive wheel, 83, the motor, 84, flabellum, 9, the wire.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1, fig. 2 and fig. 4, the LED lamp of the present invention includes a fixing structure 1, a limiting structure 2, an LED lamp 3, a sealing structure 4, a flow guiding structure 5, a protecting cover 6, a wiring hole 7, a cooling structure 8 and a wire 9; the fixed structure 1 for mounting the lamp is provided with the cooling structure 8 and the LED lamp 3; the wiring hole 7 for fixing power supply limiting penetrates through the fixing structure 1, and the lead 9 penetrates through the wiring hole 7 and is electrically connected with the LED lamp 3 and the cooling structure 8; the fixed structure 1 and the protective cover 6 for dust prevention are sealed through the sealing structure 4; a plurality of limiting structures 2 are distributed on the fixed structure 1 in a circumferential array manner; it is right to be used for gaseous water conservancy diversion of the inside of cooling structure 8 water conservancy diversion structure 5 with conflict between the protective cover 6, water conservancy diversion structure 5 with fixed knot constructs 1 conflict, just water conservancy diversion structure 5 with can dismantle the connection between the limit structure 2.

Specifically, as shown in fig. 1, 4 and 5, the fixing structure 1 of the LED lamp provided by the invention includes a fixing plate 11, a guide shaft 12, a plurality of LED lamps 3 equidistantly fixed on the fixing sleeve 13, the fixing sleeve 13 is a truncated cone-shaped structure, the side wall of the fixing sleeve 13 is provided with the drainage groove 14 for drainage, the guide shaft 12 of a cylindrical structure is fixed on the fixing sleeve 13, the wiring hole 7 penetrates through the guide shaft 12, and one end of the guide shaft 12, which is far away from the fixing sleeve 13, is fixed with the fixing plate 11 in a disc shape; when in use, the fixing plate 11 is fixed on a wall body through a bolt, then a power line passes through the wiring hole 7, and the lead 9 is connected with the power line; wiring hole 7 set up effectual protection wire 9, and then effectively prevent that wire 9 power cord from damaging, installation cover 13 is round platform shape structure, and the cooperation drainage groove 14's use is convenient for right cooling structure 8 drainage, and then has improved ventilation heat dispersion greatly.

Specifically, as shown in fig. 1 and 4, in the LED lamp of the present invention, the cooling structure 8 includes a driving wheel 81, a driving wheel 82, a motor 83 and fan blades 84, the driving wheel 81 is rotatably connected to the guide shaft 12, the motor 83 is fixed to the mounting sleeve 13, the wires 9 are electrically connected to the motor 83, the motor 83 is rotatably connected to the driving wheel 82, the driving wheel 82 is engaged with the driving wheel 81, and the fan blades 84 are disposed at one end of the driving wheel 81 close to the fixing plate 11; when the indoor cooling is needed, the motor 83 rotates, the motor 83 drives the driving wheel 81 to rotate through the driving wheel 82, the driving wheel 81 drives the fan blades 84 to rotate, so that air circulation is promoted, gas is blown to the installation sleeve 13, indoor air circulation is promoted, meanwhile, the motor 83 and the LED lamp 3 are convenient to cool, stability of the lamp is greatly improved, the contact area between the motor and the air and the installation sleeve 13 is increased due to the arrangement of the drainage grooves 14, the cooling effect is improved, the motor 83 is matched with the driving wheel 82 and the driving wheel 81, and space utilization efficiency is improved.

Specifically, as shown in fig. 1, fig. 2 and fig. 5, in the LED lamp according to the present invention, the sealing structure 4 includes a first sealing ring 41, a clamping groove 42, a second sealing ring 43 and a fixing ring 44, the clamping groove 42 having a semicircular cross section is disposed on the mounting sleeve 13, the first sealing ring 41 is disposed inside the clamping groove 42, the fixing ring 44 is fixed to the protecting cover 6, the second sealing ring 43 is disposed at the bottom end of the fixing ring 44, the second sealing ring 43 is engaged with the clamping groove 42, and the second sealing ring 43 is engaged with the first sealing ring 41; after the overhaul, the second sealing washer 43 with draw-in groove 42 block is right the inside of installation cover 13 the LED lamp 3 and the motor 83 carries out preliminary sealing, then first sealing washer 41 with the second sealing washer 43 block carries out the secondary seal, thereby has improved installation cover 13 with waterproof and moisture resistance between the protective cover 6 has improved the LED lamp 3 and the stability in utilization performance of motor 83.

Specifically, as shown in fig. 1 and 3, the flow guide structure 5 of the LED lamp of the present invention includes a plurality of air holes 51, a sliding rod 52, a limiting rod 53, a flow guide sleeve 54 and a flow guide hole 55, the guiding sleeve 54 is abutted against the fixing ring 44 and the fixing plate 11, the cross section of the fixing ring 44 is a trapezoid structure, one end of the flow guide sleeve 54 close to the fixing plate 11 is provided with the flow guide holes 55 distributed in a semicircular circumferential array, a plurality of air holes 51 with different angles are arranged in the circumferential direction of the outer part of the flow guide sleeve 54, the sliding rod 52 with an oval cross section and a storage space is fixed on the flow guide sleeve 54, the limiting rod 53 penetrates through the guide sleeve 54 and the sliding rod 52, a groove with a regular hexagon structure is formed in the end part of the limiting rod 53, and the limiting rod 53 is rotatably connected with the guide sleeve 54; flabellum 84 rotates and makes the air follow drainage hole 55 impresses installation cover 13 with between the water conservancy diversion cover 54, follow water conservancy diversion cover 54 the gas pocket 51 blows out, to indoor cooling, the angle of gas pocket 51 is different, has increased the heat transfer scope, has improved indoor radiating effect greatly, the cross section of retainer plate 44 is the trapezium structure, has increased retainer plate 44 with the area of contact of water conservancy diversion cover 54 makes protective cover 6 is fixed more stably.

Specifically, as shown in fig. 1 and fig. 2, the limiting structure 2 of the LED lamp of the present invention includes a plurality of sleeves 21 and a guide rod 22, the plurality of sleeves 21 are distributed on the fixing plate 11 in a circumferential array, the guide rod 22 is disposed inside the sleeve 21, the slide rod 52 is slidably connected with the sleeve 21, the slide rod 52 is disposed between the guide rod 22 and the sleeve 21, and the limiting rod 53 is in threaded connection with the guide rod 22; when the LED lamp 3 and the motor 83 are overhauled and maintained, the limiting rod 53 is screwed by a wrench, so that the limiting rod 53 and the sleeve 21 slide until the sliding rod 52 completely slides out of the sleeve 21, then the flow guide sleeve 54 does not interfere with the mounting sleeve 13, one of the slide rods 52 is embedded into one of the sleeves 21, the limiting rod 53 is screwed, the limiting rod 53 is in threaded connection with the guide rod 22, the flow guide structure 5 is temporarily fixed on the sleeve 21, the protective cover 6 is clamped with the flow guide sleeve 54, and when the maintenance position is high, the diversion structure 5 and the protective cover 6 are inconvenient to place, the efficiency of maintenance and repair and the quality thereof are greatly improved, meanwhile, the limiting rod 53 is rotatably connected with the guide sleeve 54, so that the limiting rod 53 is prevented from falling off.

Firstly, fixing a fixing structure 1 on a wall body through an expansion bolt, penetrating a power line of an external switch through a wiring hole 7, and electrically connecting the power line with a lead 9; the protective cover 6 is clamped with the flow guide structure 5, then the flow guide structure 5 is fixed with the limiting structure 2, when the cooling structure 8 works, cooling air is discharged from the flow guide structure 5, air circulation is further promoted, and when overhauling and maintaining are conducted, the flow guide structure 5 is connected with the limiting structure 2, the flow guide structure 5 is not abutted to the fixing structure 1, and therefore overhauling and maintaining are conducted on the cooling structure 8 and the LED lamp 3; the method specifically comprises the following steps:

(1) firstly, fixing a fixing plate 11 on a wall body through a bolt, then penetrating a power line through a wiring hole 7, and connecting a wire 9 with the power line; the arrangement of the wiring holes 7 effectively protects the wires 9, so that the power lines of the wires 9 are effectively prevented from being damaged, the mounting sleeve 13 is of a truncated cone-shaped structure, and the drainage of the cooling structure 8 is facilitated by matching with the use of the drainage grooves 14, so that the ventilation and heat dissipation performance is greatly improved;

(2) when the indoor temperature needs to be reduced, the motor 83 rotates, the motor 83 drives the driving wheel 81 to rotate through the driving wheel 82, the driving wheel 81 drives the fan blades 84 to rotate, so that air circulation is promoted, air is blown on the mounting sleeve 13, indoor air circulation is promoted, meanwhile, the motor 83 and the LED lamp 3 are convenient to reduce the temperature, the stability of the lamp is greatly improved, the contact area between the air and the mounting sleeve 13 is increased due to the arrangement of the drainage grooves 14, the cooling effect is improved, and the motor 83 is matched with the driving wheel 82 and the driving wheel 81 thereof, so that the space utilization efficiency is improved;

(3) the fan blades 84 rotate to enable air to be pressed into the space between the mounting sleeve 13 and the flow guide sleeve 54 from the flow guide holes 55 and blown out from the air holes 51 of the flow guide sleeve 54 to cool the indoor space, the angles of the air holes 51 are different, the heat exchange range is enlarged, the indoor heat dissipation effect is greatly improved, the cross section of the fixing ring 44 is of a trapezoidal structure, the contact area between the fixing ring 44 and the flow guide sleeve 54 is enlarged, and the protective cover 6 is fixed more stably;

(4) when the LED lamp 3 and the motor 83 are overhauled and maintained, the limiting rod 53 is screwed by a wrench, the limiting rod 53 and the sleeve 21 slide until the sliding rod 52 completely slides out of the sleeve 21, then the guide sleeve 54 does not conflict with the installation sleeve 13, then one sliding rod 52 is embedded into one sleeve 21, the limiting rod 53 is screwed, the limiting rod 53 is in threaded connection with the guide rod 22, the guide structure 5 is temporarily fixed on the sleeve 21, the protective cover 6 is clamped with the guide sleeve 54, the problem that the guide structure 5 and the protective cover 6 are inconvenient to place when the overhauling position is higher is avoided, the overhauling and maintenance efficiency and the quality are greatly improved, meanwhile, the limiting rod 53 is rotatably connected with the guide sleeve 54, and the limiting rod 53 is prevented from falling off;

(5) after the overhaul, second sealing washer 43 and draw-in groove 42 block carry out preliminary sealing to the LED lamp 3 of the inside of installation cover 13 and motor 83, then first sealing washer 41 carries out secondary seal with second sealing washer 43 block to improve the dampproofing and waterproofing performance between installation cover 13 and the protective cover 6, improved the stability in use performance of LED lamp 3 and motor 83.

The limiting structure 2 on the fixing structure 1 is matched with the flow guide structure 5 for use, so that the flow guide structure 5 and the protective cover 6 are conveniently and temporarily fixed in the process of overhauling and maintaining the LED lamp, and the overhauling and maintaining quality and efficiency are greatly improved; the flow guide structure 5 is matched with the fixing structure 1, so that the noise of the cooling structure 8 in use is effectively reduced, and meanwhile, the cooling structure 8 is effectively prevented from hurting users, so that the use safety performance is greatly improved, and the space utilization efficiency is improved; the arrangement of the cooling structure 8 is convenient for cooling the LED lamp 3, so that the service life of the LED lamp 3 is greatly prolonged, and meanwhile, the indoor air is convenient to dredge, the indoor ventilation is convenient, and the performance of the LED lamp is more perfect.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An LED lamp, characterized in that: the LED lamp comprises a fixing structure (1), a limiting structure (2), an LED lamp (3), a sealing structure (4), a flow guide structure (5), a protective cover (6), a wiring hole (7), a cooling structure (8) and a wire (9); the fixed structure (1) for mounting the lamp is provided with the cooling structure (8) and the LED lamp (3); the wiring hole (7) used for fixing power supply limiting penetrates through the fixing structure (1), and the lead (9) penetrates through the wiring hole (7) to be electrically connected with the LED lamp (3) and the cooling structure (8); the fixing structure (1) and the protective cover (6) for dust prevention are sealed through the sealing structure (4); a plurality of limiting structures (2) are distributed on the fixed structure (1) in a circumferential array manner; the flow guide structure (5) used for guiding gas in the cooling structure (8) is abutted against the protective cover (6), the flow guide structure (5) is abutted against the fixed structure (1), and the flow guide structure (5) is detachably connected with the limiting structure (2);

the fixing structure (1) comprises a fixing plate (11), a guide shaft (12), an installation sleeve (13) and a drainage groove (14), the number of the LED lamps (3) is multiple, the LED lamps (3) are fixed on the installation sleeve (13) in an equidistant mode, the installation sleeve (13) is of a circular truncated cone-shaped structure, the drainage groove (14) used for drainage is formed in the side wall of the installation sleeve (13), the guide shaft (12) of a cylindrical structure is fixed on the installation sleeve (13), the wiring hole (7) penetrates through the guide shaft (12), and the fixing plate (11) with a circular disc shape is fixed at one end, away from the installation sleeve (13), of the guide shaft (12);

the cooling structure (8) comprises a transmission wheel (81), a driving wheel (82), a motor (83) and fan blades (84), the transmission wheel (81) is rotatably connected with the guide shaft (12), the motor (83) is fixed on the mounting sleeve (13), the lead (9) is electrically connected with the motor (83), the motor (83) is rotatably connected with the driving wheel (82), the driving wheel (82) is meshed with the transmission wheel (81), and the fan blades (84) are arranged at one end, close to the fixing plate (11), of the transmission wheel (81);

the sealing structure (4) comprises a first sealing ring (41), a clamping groove (42), a second sealing ring (43) and a fixing ring (44), the clamping groove (42) with a semicircular cross section is formed in the mounting sleeve (13), the first sealing ring (41) is arranged in the clamping groove (42), the fixing ring (44) is fixed on the protective cover (6), the second sealing ring (43) is arranged at the bottom end of the fixing ring (44), the second sealing ring (43) is clamped with the clamping groove (42), and the second sealing ring (43) is clamped with the first sealing ring (41);

the flow guide structure (5) comprises a plurality of air holes (51), a slide rod (52), a limiting rod (53), a flow guide sleeve (54) and a flow guide hole (55), the flow guide sleeve (54) is abutted against the fixed ring (44) and the fixed plate (11), the cross section of the fixed ring (44) is in a trapezoidal structure, one end of the flow guide sleeve (54) close to the fixed plate (11) is provided with the semi-circular drainage holes (55) distributed in a circumferential array, a plurality of air holes (51) with different angles are arranged in the circumferential direction of the outer part of the flow guide sleeve (54), the sliding rod (52) with an oval cross section and a storage space is fixed on the flow guide sleeve (54), the limiting rod (53) penetrates through the guide sleeve (54) and the sliding rod (52), the end part of the limiting rod (53) is provided with a groove with a regular hexagon structure, and the limiting rod (53) is rotatably connected with the flow guide sleeve (54).

2. The LED lamp of claim 1, wherein: limit structure (2) include a plurality of sleeves (21) and guide bar (22), it is a plurality of sleeve (21) circumference array distribute with fixed plate (11), the inside of sleeve (21) is equipped with guide bar (22), slide bar (52) with sliding connection between sleeve (21), slide bar (52) are located guide bar (22) with between sleeve (21), gag lever post (53) with threaded connection between guide bar (22).