CN208058434U - LED illumination lamp - Google Patents

Abstract

The utility model proposes an LED lighting fixture, which at least includes a lamp housing main body, a power supply assembly and a power supply cover; the lamp housing main body is provided with a power supply seat, and the power supply reception seat can accommodate the power supply assembly The power supply cover is closed and installed on the power supply seat to form a power supply accommodation cavity and a colloid overflow space; the power supply assembly is fixed in the power supply accommodating cavity by filling glue; the colloid overflow The flow space is located outside the power supply accommodating cavity, so as to accommodate the glue overflowing from the power supply accommodating cavity when the power supply cover is closed on the power supply accommodating seat. The LED lighting fixture of the utility model prevents the colloid from overflowing to the exterior when the power supply component is filled with glue and sealed.

Description

LED Lighting Fixtures

technical field

The utility model belongs to the field of LED lighting, in particular to an LED lighting lamp.

Background technique

LED (Light Emitting Diode, Light Emitting Diode) lighting devices are currently widely used in various lighting places, such as indoor lighting, outdoor lighting, portable lighting, situational lighting, and the like. LED lamps have the advantages of energy saving, long life, good applicability, short response time, environmental protection, gorgeous colors, and pure luminous colors. They are the development direction of the lamp industry.

The performance of light-emitting diodes is easily affected by humidity, temperature, mechanical vibration and mechanical shock. In order to ensure that the LED light-emitting components can work normally within the normal service life, it is required that the LED lamp assembly components have good waterproof performance, heat dissipation performance, and waterproof performance. Mechanical vibration performance and mechanical shock resistance performance, etc. Different use environments of lamps will have some special requirements for lamps. For example, if street lamps are used outdoors, lamps and lanterns are required to have good anti-ultraviolet performance and waterproof performance.

LED lighting fixtures include power supply components, and the installation of power supply components needs to ensure its sealing performance and firmness, so it is usually sealed with glue, but there is usually glue during the glue filling process or the extrusion cover process Spill, while the colloid is darker in color, resulting in traces of colloid on the surface and affecting its appearance.

Utility model content

The technical problem to be solved by the utility model is to provide an LED lighting fixture, which can prevent the colloid from overflowing to the exterior when the power supply assembly is sealed with glue.

In order to solve the above problems, the utility model proposes an LED lighting fixture, which at least includes a lamp housing main body, a power supply assembly and a power supply cover; The power supply assembly is placed; the power supply cover is closed and installed on the power supply accommodating seat to form a power supply accommodating cavity and a colloid overflow space; the power supply assembly is fixed in the power supply accommodating cavity by filling glue The colloid overflow space is located outside the power supply accommodating cavity to accommodate the colloid overflowing from the power supply accommodating cavity when the power supply cover is closed to the power supply accommodating seat.

According to an embodiment of the present invention, the power supply seat has a first ring wall and a second ring wall arranged inside and outside; the power supply cover has a wall corresponding to the first ring wall and the second ring wall. the third and fourth ring walls;

When the power supply cover is closed to the power supply seat, the third ring wall is in contact with the first ring wall, and the fourth ring wall is in contact with the second ring wall, so that the The inner side of the third ring wall and the first ring wall forms the power supply accommodating cavity, and the outer side of the third ring wall and the first ring wall and the fourth ring wall and the second ring wall The inner side of the wall forms the colloid overflow space.

According to an embodiment of the present utility model, the colloid overflow space includes a narrower overflow channel and a wider overflow chamber that communicate with each other; the first ring wall corresponds to the end surface of the overflow chamber An overflow notch is provided, and the rest of the end face is flat.

According to an embodiment of the present utility model, the end face portion of the third ring wall corresponding to the overflow notch is provided with a blocking block matching the overflow notch.

According to an embodiment of the present invention, the narrower overflow channel is arranged along the long side of the power supply seat, and the wider overflow chamber is arranged along the short side of the power supply seat.

According to an embodiment of the present invention, the power supply cover is further provided with a blocking wall higher than the fourth ring wall, and the blocking wall is set on the fourth ring wall or on the fourth ring wall The inner side corresponds to the position of the overflow channel.

According to an embodiment of the present invention, a first sealing ring is further included; the first sealing ring is compressed and arranged between the first ring wall and the third ring wall.

According to an embodiment of the present invention, an insulating box is further included; the power supply assembly is placed in the insulating box, and the insulating box is placed in the power supply seat.

According to an embodiment of the present utility model, it further includes at least one LED module; the lamp housing body is also provided with a light source installation part isolated from the power supply seat, and the LED module is installed on the light source on the installation part.

According to an embodiment of the present invention, the light source installation part includes a base of the light source cavity and a lens pressure frame; the LED module is installed on the base of the light source cavity, and is pressed and fixed in the light source cavity by the lens pressure frame on the base.

According to an embodiment of the present invention, each of the LED modules includes an LED circuit board, a second sealing ring and a lens, the LED circuit board is fixed on the base of the light source cavity, and the second sealing ring Cooperate with the lens to be attached to the base of the light source cavity and cover the LED circuit board, and the lens pressure frame presses and seals all the LED modules and is fixed on the base of the light source cavity.

According to an embodiment of the present invention, the edge of the lens pressing frame presses down on the lens, and the pressing force acts on the second sealing ring to compact and seal the LED module.

According to an embodiment of the present invention, each of the LED modules further includes liquid silicone, which is coated on the outside or inside of the contact portion of the lens press frame, the lens and the second sealing ring, and compacts the LED on the lens press frame. The liquid silicone is cured after the module is assembled.

According to an embodiment of the present invention, the lens pressure frame compresses the LED module through screws, and is connected and fixed to the base of the light source cavity.

According to an embodiment of the present invention, the front of the light source installation part of the lamp housing body is the light emitting surface of the LED module, and the back surface of the light source installation part of the lamp housing main body is provided with cooling fins.

According to an embodiment of the present utility model, the part between the light source installation part and the power source accommodating seat is provided with a through row hole, which is used for water falling inside the angle of the lamp housing, and plays a role of heat insulation .

According to an embodiment of the present invention, it further includes a bracket and a knob, and the bracket is installed on the main body of the lamp housing through the knob, so that the main body of the lamp housing can rotate relative to the bracket.

According to an embodiment of the present invention, a toothed washer is also included, which is connected between the knob and the lamp housing to prevent loosening.

After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

Set the relationship between the power supply cover and the power supply seat so that the power supply cavity and the glue overflow space can be formed after the mating connection. The power supply components are set in the power supply cavity and the entire power supply cavity is filled by glue , because the colloid will be squeezed when the power supply cover and the power supply seat are connected, the colloid will overflow out of the power supply accommodating cavity. The utility model sets the colloid overflow space outside the power supply accommodating cavity, which can The overflowing colloid is received in it, so as to prevent the colloid from overflowing to the appearance of the power cover and the power supply seat, and the appearance will not be affected on the basis of ensuring the sealing performance and firmness;

Due to the limitation of the space for the installation of the power supply as a whole, the colloid overflow space cannot be set very large, which will affect the overall volume of the luminaire. Therefore, the colloid overflow space is divided into an overflow channel and an overflow cavity, and the overflow channel is larger. If the overflow cavity is narrow and the overflow cavity is wide, the colloid can flow from the overflow channel to the overflow cavity on the basis of still being able to accept the colloid around the power supply accommodating cavity, saving space; at the same time, the corresponding overflow on the first ring wall The end face of the cavity is provided with an overflow gap, so that when the glue is filled too full or when the colloid is squeezed, it can first flow into the overflow cavity from the overflow gap, so as to avoid overflowing to the outside due to the direct overflow speed is too fast go.

Description of drawings

Fig. 1 is a schematic diagram of an explosion structure of an LED lighting fixture according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a power supply cover according to an embodiment of the present invention;

Fig. 3 is a schematic structural view of the main body of the lamp housing according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the LED lighting fixture in an open state of the power supply cover according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the assembled structure of an LED lighting fixture according to an embodiment of the present invention.

Instructions for marks in the figure:

1-Lamp housing main body, 11-Power supply seat, 111-First ring wall, 1111-Overflow gap, 112-Second ring wall, 12-Light source cavity base, 13-Row of holes, 2-Power supply cover, 21-Third ring wall, 22-Fourth ring wall, 23-Block wall, 3-Power supply assembly, 4-First sealing ring, 5-Insulation box, 6-Lens pressure frame, 7-LED module, 71- Lens, 72-second sealing ring, 73-LED circuit board, 8-knob, 9-support, 10-toothed spacer.

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can do similar promotions without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below .

Referring to FIGS. 1-5 , in one embodiment, an LED lighting fixture at least includes a lamp housing main body 1 , a power supply assembly 3 and a power supply cover 2 . Of course, the LED lighting fixture may also include other required structures, which are not limited here, such as light source components, heat dissipation structures, and the like. The power supply component 3 may be an existing power supply component, for example, may include a bare board power supply, a lightning protector, a circuit, and the like.

The lamp housing main body 1 is provided with a power supply seat 11 , and the power supply assembly 3 can be accommodated in the power supply seat 11 . The power cover 2 and the power supply seat 11 are mated and connected, and studs and screw holes can be respectively provided on the two to be connected by screw joints, of course, the details are not limited. When the power supply cover 2 is closed and installed on the power supply seat 11, a power supply accommodation cavity and a colloid overflow space can be formed. The power supply assembly 3 is fixed in the power supply accommodating cavity by filling glue, and the entire power supply accommodating cavity is filled by filling glue, leaving no air gap, and the glue filling can also play a sealing effect, so there will be easy overflow The problem. The colloid overflow space is located outside the power supply accommodating cavity to accommodate the colloid overflowing from the power supply accommodating cavity when the power supply cover 2 is closed to the power supply accommodating seat 11 .

The relationship between the power supply cover 2 and the power supply seat 11 is set such that a power supply cavity and a colloid overflow space can be formed after the mating connection, the power supply assembly 3 is set in the power supply cavity and the entire power supply is accommodated by filling When the cavity is full, the colloid will be squeezed when the power supply cover 2 and the power supply seat 11 are connected, so there will be colloid overflowing outside the power supply accommodating cavity. The utility model sets the colloid overflow space in the power supply accommodating cavity The outer side of the cover can receive the overflowing colloid, thereby preventing the colloid from overflowing to the appearance of the power supply cover 2 and the power supply seat 11, so that the appearance will not be affected on the basis of ensuring the sealing performance and firmness.

In one embodiment, referring to Figs. 1-3, the power supply seat 11 has a first ring wall 111 and a second ring wall 112 arranged inside and outside; the power supply cover 2 has a 111 and the second ring wall 112 correspond to the third ring wall 21 and the fourth ring wall 22 . The specific annular shape of these ring walls may be determined according to actual conditions, and may be circular, elliptical, rectangular, irregular, etc., and is preferably rectangular in this embodiment.

When the power supply cover 2 is closed to the power supply seat 11, the third ring wall 21 is connected to the first ring wall 111, and the fourth ring wall 22 is connected to the second ring wall 112. docking so as to form the power supply accommodating cavity on the inside of the third ring wall 21 and the first ring wall 111, and on the outside of the third ring wall 21 and the first ring wall 111 and the The colloid overflow space is formed by the fourth ring wall 22 and the inner side of the second ring wall 112 .

That is to say, the power supply chamber and the glue overflow space are separated by the first ring wall 111 and the third ring wall 21, and the glue overflow space is used as an outer circle by the second ring wall 112 and the fourth ring wall 22. stand up. In this way, the colloid overflow space is arranged in the direction around the power supply accommodating cavity, and no matter in which direction the power supply accommodating cavity overflows, it can be taken over by the colloid overflow space.

Further, the colloid overflow space includes a narrower overflow channel and a wider overflow chamber that communicate with each other; an overflow gap is provided at the end surface of the first ring wall 111 corresponding to the overflow chamber 1111, the rest of the end face is flat. On the basis of the foregoing embodiments, the colloid overflow space is actually an annular space, and part of it can be used as an overflow channel and the other part can be used as an overflow chamber, and these parts are connected to each other. Narrower and wider refer to the width of the cross section. The overflow notch 1111 is preferably circular, but of course it is not limited thereto, and other shapes are also applicable.

Due to the limitation of the space for the installation of the power supply as a whole, the colloid overflow space cannot be set very large, which will affect the overall volume of the luminaire. Therefore, the colloid overflow space is divided into an overflow channel and an overflow cavity, and the overflow channel is larger. If the overflow cavity is narrow and the overflow cavity is wide, the colloid can flow from the overflow channel to the overflow cavity on the basis of still being able to accept the colloid around the power supply accommodating cavity, saving space; at the same time, the first ring wall 111 corresponds to overflow The end face of the flow chamber is provided with an overflow gap 1111, so that when the glue is filled too full or the glue is squeezed (extrusion factors such as some lines originally protruding from the glue and being squeezed by the power supply cover enter the glue and cause the glue to When overflowing), firstly, it can flow into the overflow cavity from the overflow gap 1111, so as to avoid overflowing to the outside due to the direct overflow speed being too fast.

Preferably, the end surface of the third ring wall 21 corresponding to the overflow notch 1111 is provided with a blocking block matching the overflow notch 1111 . The blocking block can be matched with the gap when the power supply cover 2 and the power supply receiving seat 11 are connected, so as to ensure the sealing of the power supply receiving cavity.

Preferably, the narrower overflow channel is arranged along the long side of the power supply seat 11 , and the wider overflow chamber is arranged along the short side of the power supply seat 11 . That is to say, the overflow channel is arranged outside the long side of the power supply seat 11 , and the overflow chamber is arranged in the direction of the short side of the power supply accommodating chamber. The length and width of this embodiment are considered from the opening of the end face of the power supply accommodating chamber. In this embodiment, the power supply seat is rectangular, that is, flat, the overflow cavity is arranged outside the short side and the overflow channel is arranged outside the long side.

In one embodiment, referring to FIG. 2 , the power supply cover 2 is further provided with a blocking wall 23 higher than the fourth ring wall 22 , and the blocking wall 23 is arranged on the fourth ring wall 22 The position corresponding to the overflow channel is arranged on or inside the fourth ring wall 22 at the position corresponding to the overflow channel.

The length of the baffle wall 23 can be the same or equivalent to the length of the overflow channel. After the colloid flows into the overflow channel, because the height of the baffle wall 23 is higher than the fourth ring wall, it will prevent the colloid from directly entering the fourth ring wall. 22 and the second ring wall 112 to prevent the gray glue from contaminating the joint of the lamp housing main body 1 and the power supply cover 2, and prevent the flow of glue on the outer wall of the power supply cavity through the small joint.

In one embodiment, the LED lighting fixture may further include a first sealing ring 4 . The first sealing ring 4 is pressed between the first ring wall 111 and the third ring wall 21 . The first sealing ring 4 can be arranged on the third ring wall 21, but when the screw is screwed in to connect the lamp housing main body 1 and the power supply cover 2, the first sealing ring will be compressed and deformed (including the overflow gap 1111 That part), to ensure the overall tightness of the power supply chamber; during the extrusion process, with the compression and deformation of the first sealing ring 4, the internal colloid will further overflow from any direction around and flow into the overflow channel or overflow chamber Inside.

In one embodiment, the LED lighting fixture may further include an insulating box 5 . The power supply assembly 3 is placed in the insulating box 5 , and the insulating box 5 is placed in the power supply seat 11 . The insulating box 5 can play the role of constraining the power supply components, and at the same time can play the role of insulation. At the same time, the insulating box 5 is glued and fixed in the power supply accommodating cavity.

In one embodiment, the LED lighting fixture can also include at least one LED module 7; the lamp housing main body 1 is also provided with a light source installation part isolated from the power supply seat 11, and the LED module 7 Installed on the light source installation part.

The light source installation part and the power supply seat 11 can be separated by a structure such as a partition wall to isolate the two from each other, and the heat generated by the LED module 7 and the power supply assembly 3 can be separated to a certain extent when they are in operation. Reduce mutual influence, thereby prolonging the service life of lamps and lanterns.

An electrical penetration portion is provided on the partition wall for penetration of the electrical connection components between the light source installation portion and the power source accommodating seat 11 . The specific form of the electrical passage is not limited, for example, it may be a circuit board and used as a part of the isolation wall, and of course there are other forms.

Optionally, the electrical penetration part is a wire hole. The wire hole is used to pass through the electrical connection wire between the LED module and the power supply, and the electrical connection wire is preferably a waterproof wire. Directly opening a wire hole on the partition wall, and connecting the LED module and the power supply component by passing through the lead wire can greatly reduce the manufacturing cost and reduce the heat transfer. Preferably, a sealing ring can be provided in the wire hole, and the sealing ring can be a wedge-shaped silicone ring, and the sealing ring is filled with glue to achieve a high protection level of the LED module. The setting of the sealing ring can prevent the flow of the poured colloid, and the combination of the two can get a better sealing effect.

Continuing to refer to FIG. 1 , preferably, the light source installation part includes a light source cavity base 12 and a lens pressure frame 6; the LED module 7 is installed on the light source cavity base 12, and is fixed on the On the base 12 of the light source cavity. Easy and reliable installation.

Preferably, each LED module 7 includes an LED circuit board 73 , a second sealing ring 72 and a lens 71 . The LED circuit board 73 is fixed on the base 12 of the light source cavity. The LED circuit board 73 may include, for example, LED lamp beads and an aluminum substrate, which are connected and installed through a welding process, but not as a limitation, the aluminum substrate may also be replaced by Other substrates, such as ceramic base, etc. The second sealing ring 72 cooperates with the lens 71 to fit on the light source cavity base 12 and covers the LED circuit board, and the lens pressure frame 6 presses and seals all the LED modules 7 and fixes them to the light source Cavity base 12. The lens 71 is set separately from the lens pressure frame 6 used to fix the lens 71, which can prevent the lens from protruding when the LED module is compressed and sealed.

The frame of the lens pressing frame 6 presses down the lens 71 along the edge, and acts on the second sealing ring 72 to compact and seal the LED module 7, which can be applied to the inner ring of the second sealing ring 72 or the entire second sealing ring 72. On the sealing ring 72 , the lens 71 and the second sealing ring 72 are passed through to compress and seal the LED module 7 .

Optionally, the lens pressure frame 6 compresses the LED module 7 with screws, and can be fixed to the light source chamber base 12 through screw connections, of course, the details are not limited. Optionally, each of the LED modules also includes liquid silicone, which is coated on the outside or inside of the contact portion of the lens press frame 6, the lens 71 and the second sealing ring 72, and the lens press frame 6 compacts the LED mold. After group 7 the liquid silicone is cured.

Specifically, the lens 71 has an outer edge, and a second sealing ring 72 of matching size is arranged below the outer edge. The lens pressing frame 6 matches the outer edge of the lens 71 and is pressed above the outer edge. The lens pressing frame 6 is pressed down to connect to the base of the light source cavity. 12 are fixed to form a light source cavity. The lens pressing frame 6 cooperates with the lens to seal the LED circuit board 73 of the LED module 7 in the light source cavity. The second sealing ring 72 on the lens 71 is compressed by the lens pressing frame 6, so that the second sealing ring 72 is evenly stressed, has good stability, and has better sealing performance.

Preferably, the front of the light source installation part 12 of the lamp housing main body 1 is the light emitting surface of the LED module 7 , and the back of the light source installation part 12 of the lamp housing main body 1 is provided with cooling fins. A plurality of heat dissipation fins can be spaced to cover the heat dissipation area required by the LED module 7 . Arranging multiple heat dissipation fins on the back of the LED module 7 can enhance the heat dissipation performance of the lamp.

Preferably, the part between the light source installation part 12 and the power source accommodating seat 11 is provided with a through drainage hole 13, which is used for the water falling of the lamp housing main body 1 and plays a role of heat insulation. The row holes 13 can be a row of waist holes, and the row holes 13 can not only be used to drain the water from the main body of the lamp housing 1, but also play a role of heat insulation, so as to dissipate the heat generated by the LED module 7 and the power supply assembly 3. Further separation reduces mutual interference and generates a certain amount of airflow, which benefits the cooling of the lamps.

Further, the LED lighting fixture may also include a bracket 9 and a knob 8 . The bracket 9 is installed on both sides between the light source mounting portion 12 and the power supply seat 11 of the lamp housing main body 1 through the knob 8 , so that the lamp housing main body 1 can rotate relative to the bracket 9 . The bracket 9 enables the main body of the lamp housing 1 to rotate, for example, to rotate 360 degrees or 340 degrees to realize multi-angle light emission of the lamp, which is beneficial to the adjustment of the light surface.

Preferably, the LED lighting fixture may also include toothed spacers 10 . The toothed washer 10 is connected between the knob 8 and the main body of the lamp housing 1 to prevent loosening. The knob 9 and the toothed spacer 10 clamp the bracket 9 to fix the main body 1 of the lamp housing. If it is necessary to adjust the light output direction, loosen the knob 9 and adjust the angle of the main body 1 of the lamp housing.

Although the utility model is disclosed as above with preferred embodiments, it is not used to limit the claims, and any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the utility model, therefore The scope of protection of the utility model shall be defined by the claims of the utility model.

Claims (18)

1. An LED lighting fixture, characterized in that it at least includes a lamp housing main body, a power supply assembly, and a power supply cover; The power supply assembly; the power supply cover is mounted on the power supply accommodating seat to form a power supply accommodating cavity and a colloid overflow space; the power supply assembly is fixed in the power supply accommodating cavity by filling glue; the The colloid overflow space is located outside the power supply accommodating cavity to accommodate the colloid overflowing from the power supply accommodating cavity when the power supply cover is closed on the power supply accommodating seat. 2. The LED lighting fixture as claimed in claim 1, wherein the power supply seat has a first ring wall and a second ring wall arranged on an inner and outer ring; The third ring wall and the fourth ring wall corresponding to the wall and the second ring wall; When the power supply cover is closed to the power supply seat, the third ring wall is in contact with the first ring wall, and the fourth ring wall is in contact with the second ring wall, so that the The inner side of the third ring wall and the first ring wall forms the power supply accommodating cavity, and the outer side of the third ring wall and the first ring wall and the fourth ring wall and the second ring wall The inner side of the wall forms the colloid overflow space. 3. The LED lighting fixture according to claim 2, wherein the colloid overflow space includes a narrower overflow channel and a wider overflow cavity that communicate with each other; the first ring wall corresponds to the An overflow notch is provided at the end surface of the overflow cavity, and the rest of the end surface is flat. 4 . The LED lighting fixture according to claim 3 , wherein a blocking block matching the overflow notch is provided on the end surface of the third ring wall corresponding to the overflow notch. 5 . 5. The LED lighting fixture according to claim 3, wherein the narrower overflow channel is arranged along the long side of the power supply seat, and the wider overflow cavity is arranged along the long side of the power supply seat. Set on the short side of the seat. 6. The LED lighting fixture according to claim 3, wherein the power supply cover is further provided with a baffle wall higher than the fourth ring wall, and the baffle wall is arranged on the fourth ring wall The position on the wall or the inner side of the fourth ring wall corresponds to the overflow channel. 7. The LED lighting fixture according to any one of claims 2-5, further comprising a first sealing ring; the first sealing ring is pressed between the first ring wall and the third ring wall between. 8. The LED lighting fixture according to any one of claims 1-5, further comprising an insulating box; the power supply assembly is placed in the insulating box, and the insulating box is placed in the Inside the power socket. 9. The LED lighting fixture according to any one of claims 1-5, further comprising at least one LED module; the main body of the lamp housing is also provided with a The light source installation part, the LED module is installed on the light source installation part. 10. The LED lighting fixture according to claim 9, wherein the light source installation part comprises a light source cavity base and a lens pressure frame; Press and fix on the base of the light source cavity. 11. The LED lighting fixture according to claim 10, wherein each of the LED modules comprises an LED circuit board, a second sealing ring and a lens, and the LED circuit board is fixed to the base of the light source cavity On the top, the second sealing ring fits the lens on the base of the light source cavity and covers the LED circuit board, and the lens pressure frame presses and seals all the LED modules and fixes them on the base of the light source cavity . 12 . The LED lighting fixture according to claim 11 , wherein the edge of the lens pressing frame presses down the lens, and the pressing force acts on the second sealing ring to compact and seal the LED module. 13 . 13. The LED lighting fixture according to claim 12, wherein each of the LED modules further includes liquid silicone, which is coated on the outside or inside of the contact parts of the lens pressure frame, lens and second sealing ring , the liquid silicone is cured after the lens press frame compacts the LED module. 14. The LED lighting fixture according to claim 12, wherein the lens pressure frame compresses the LED module with screws, and is connected and fixed to the base of the light source cavity. 15. The LED lighting fixture according to claim 9, wherein the front of the light source installation part of the lamp housing body is the light emitting surface of the LED module, and the back surface of the light source installation part of the lamp housing main body is arranged with cooling fins. 16. The LED lighting fixture according to claim 9, characterized in that, a row of through holes is provided on the part between the light source installation part and the power source accommodating seat, for the inner side of the included angle of the main body of the lamp housing. Fall into the water and play the role of heat insulation. 17. The LED lighting fixture according to claim 9, further comprising a bracket and a knob, the bracket is mounted on the main body of the lamp housing through the knob, so that the main body of the lamp housing can rotate relative to the bracket. 18. The LED lighting fixture according to claim 17, further comprising a toothed gasket connected between the knob and the main body of the lamp housing to prevent loosening.