Portable LED illuminating lamp

Abstract

The invention relates to the technical field of LED illuminating lamps, and discloses a portable LED illuminating lamp which comprises an LED lamp box, a handle, a supporting assembly and a fixing assembly, the handle and the supporting assembly are fixedly connected with the LED lamp box through the fixing assembly, and the fixing assembly is installed on the rear side of the LED lamp box; the LED lamp box further comprises two protection plates symmetrically distributed on the front side of the LED lamp box, one side of each protection plate is in sliding connection with the LED lamp box, the sum of the surface areas of the front sides of the two protection plates is equal to the surface area of the front side of the LED lamp box, and a control unit used for moving the two protection plates is installed at the top of the LED lamp box. A linkage unit is in transmission connection between the control unit and the fixing assembly; under the action of the designed control unit, the two protection plates and the linkage unit, opposite movement of the two protection plates is achieved, so that the protection plates are controlled to shield or open the front side of the LED lamp box, a light-transmitting cover on the front side of the LED lamp box can be sealed and shielded after use is finished, and the LED illumination protection effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of LED lighting lamps, in particular to a portable LED lighting lamp. Background Art

[0002] LED lighting uses light-emitting diodes (LEDs) as a light source, offering advantages such as energy efficiency, environmental friendliness, and a long lifespan. LED lighting is not only widely used in homes but is also gradually replacing traditional lighting in commercial and industrial sectors. Its high energy efficiency and low maintenance costs make LED lighting the preferred modern lighting technology.

[0003] At present, outdoor usually uses Figure 1 A portable emergency light is shown for lighting purposes, wherein the portable lighting lamp is composed of an LED light box and a bracket. The LED light box and the bracket are connected so that they can be stably placed on the ground for use. In addition, a portable handle is connected to the LED light box, which is convenient for the user to carry in hand for use. However, since the translucent shell of the LED light box is usually made of glass or plastic, the portable lighting on the market generally lacks passive protection measures. Therefore, when the lighting is carried and moved, the translucent shell can easily collide with external objects. This unexpected collision often causes damage to the translucent shell of the LED light box, thereby affecting the performance and life of the lighting. Summary of the Invention

[0004] The object of the present invention is to provide a portable LED lighting lamp to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a portable LED lighting lamp, comprising an LED light box, a handle, a supporting assembly and a fixing assembly, wherein the handle and the supporting assembly are fixedly connected to the LED light box through the fixing assembly, and the fixing assembly is installed on the rear side of the LED light box; it also includes: two protective plates symmetrically distributed on the front side of the LED light box, one side of the protective plates are slidably connected to the LED light box, the sum of the front surface areas of the two protective plates is equal to the front surface area of the LED light box, a control unit for moving the two protective plates is installed on the top of the LED light box, and a linkage unit is transmission-connected between the control unit and the fixing assembly; a negative pressure unit is installed on the LED light box, one end of the negative pressure unit is transmission-connected to the control unit, and it is used to dissipate heat from the LED light box.

[0006] Preferably, the control unit includes a first rotating shaft, a support seat, a fixed plate, a driving gear, a first rack and a second rack, one end of the first rotating shaft is fixedly connected to the driving gear, and the other end is transmission connected to the linkage unit, the first rack and the second rack are respectively engaged with the upper and lower sides of the driving gear, one end of the first rack is fixed to one of the protective plates through a connecting bar, and one end of the second rack is fixed to the other protective plate through a connecting bar, the support seat and the fixed plate are both fixed to the LED light box, the first rotating shaft is rotatably connected to the support seat and the fixed plate through bearings, one end of the negative pressure unit is transmission connected to the first rotating shaft, and the two protective plates can be moved towards each other by the control unit, thereby controlling the protective plates to block or open the front side of the LED light box.

[0007] Preferably, the linkage unit includes a second rotating shaft, a driving pulley and a driven pulley, one end of the second rotating shaft is rotatably connected to the fixed plate, the driving pulley is fixedly sleeved on the outer side of the second rotating shaft, and the driven pulley is fixedly sleeved on one end of the first rotating shaft, a synchronous belt is connected for transmission between the driving pulley and the driven pulley, and a hexagon socket bolt head is fixed on the end of the second rotating shaft away from the fixed plate, and the fixed assembly and the second rotating shaft are transmission-connected. The designed linkage unit can realize the linkage between the control unit, the fixed assembly and the negative pressure unit.

[0008] Preferably, the negative pressure unit includes a sealing shell, a reciprocating screw, a slide, a piston plate, a first helical gear, a second helical gear, an air inlet pipe, a first air distribution pipe and an air blowing assembly. The bottom of the sealing shell is fixed to the top of the LED light box through a connecting plate. Both ends of the reciprocating screw are rotatably connected to the sealing shell through sealed bearings. The slide is sleeved on the surface of the reciprocating screw, the piston plate is fixedly sleeved on the outer ring of the slide, the piston plate is slidably connected to the sealing shell, one end of the reciprocating screw is fixed with a third rotating shaft, the first helical gear is fixedly sleeved on the The outer side of the first rotating shaft, the second helical gear and the outer side of the third rotating shaft are fixedly sleeved, the first helical gear and the second helical gear are meshed and connected, one end of the air inlet pipe is fixedly connected to the sealing shell through a one-way valve, and the other end thereof is fixedly connected to the first air distribution pipe, the bottom end of the first air distribution pipe is connected to the interior of the LED light box through multiple pipes, one end of the blowing assembly is fixedly connected to the sealing shell, and the designed negative pressure unit can extract the hot air flow after work inside the LED light box, thereby achieving a rapid heat dissipation effect on the LED lighting lamp.

[0009] Preferably, the blowing assembly includes an air outlet pipe, a second air distribution pipe and a dust blowing pipe, one end of the air outlet pipe is fixedly connected to the sealing shell through a one-way valve, and the other end thereof is fixedly connected to the second air distribution pipe, a plurality of dust blowing pipes are provided, and a plurality of the dust blowing pipes are fixed at the bottom of the second air distribution pipe, and the end of the dust blowing pipe away from the second air distribution pipe passes through the top of the LED light box and extends to a position above the front side of the LED light box. The hot air flow can be further blown toward the front surface of the LED light box through the blowing assembly to clean the dust on the surface of the light-transmitting shell on the front side of the LED light box.

[0010] Preferably, the fixing assembly includes a fourth rotating shaft, a threaded column, a T-shaped plate, a limit block, a third helical gear and a fourth helical gear, two limit seats are symmetrically provided on the outer side of the fourth rotating shaft, the limit seat is rotatably connected to the fourth rotating shaft, one end of the limit seat is fixed to the rear side of the LED light box, the threaded column is fixed to the two ends of the fourth rotating shaft, the T-shaped plate is threadedly connected to the threaded column through a nut, the limit block is fixed to the two ends of the T-shaped plate, the third helical gear is fixedly sleeved on the second rotating shaft, the fourth helical gear is fixedly sleeved on the fourth rotating shaft and meshed with the third helical gear, limit grooves are provided on both sides of the LED light box that are compatible with the limit blocks, a slide is fixed on the rear side of the LED light box, and the T-shaped plate is slidably sleeved on the slide, and the designed fixing assembly can quickly realize the disassembly of the support assembly and the handle.

[0011] Preferably, the support assembly includes a U-shaped frame, an adjustment member and a base, the top of the adjustment member is fixed to the bottom center position of the U-shaped frame, and the bottom of the adjustment member is fixedly connected to the base, so that the LED light box can be supported by the support assembly.

[0012] Preferably, the adjusting member includes a fixing rod, a hemispherical cover, a locking ball and a connecting block. The hemispherical cover is fixedly connected to the U-shaped frame through the fixing rod, the locking ball is movably connected in the hemispherical cover, and the bottom of the locking ball is fixedly connected to the base through the connecting block. The illumination angle of the LED light box can be adjusted through the adjusting member.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention improves the existing portable lighting lamp. Through the designed control unit, two protective plates and linkage unit, the two protective plates are moved toward each other, thereby controlling the protective plates to block or open the front side of the LED light box. After use, the light-transmitting cover on the front side of the LED light box can be closed and blocked, thereby protecting the LED lighting.

[0014] 2. The present invention can link the negative pressure unit to work when the protective plate moves, so that the hot air flow after work inside the LED light box can be extracted, thereby achieving a rapid heat dissipation effect on the LED lighting lamp, which not only improves the heat dissipation efficiency of the LED light box, but also extends the service life of the LED lighting lamp, ensuring the stability and reliability of the lighting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an existing portable lighting lamp; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the present invention from another perspective; Figure 4 Schematic diagram of the structure of the control unit of the present invention; Figure 5 It is a structural schematic diagram of the linkage unit of the present invention; Figure 6 Schematic diagram of the structure of the negative pressure unit of the present invention; Figure 7 It is a structural schematic diagram of the fixing assembly of the present invention; Figure 8 It is a schematic structural diagram of the supporting assembly and the fixing assembly of the present invention.

[0016] In the figure: 1. LED light box; 2. Handle; 3. Support assembly; 301. U-shaped frame; 302. Adjustment member; 3021. Fixing rod; 3022. Hemispherical cover; 3023. Card ball; 3024. Connecting block; 303. Base; 4. Fixing assembly; 401. Fourth rotating shaft; 402. Threaded column; 403. T-shaped plate; 404. Stop block; 405. Third helical gear; 406. Fourth helical gear; 407. Stop seat; 408. Stop slot; 409. Slide; 5. Protective plate; 6. Control unit; 601. First rotating shaft; 602. Support seat; 603. Fixing plate; 6 04. Driving gear; 605. First rack; 606. Second rack; 7. Linkage unit; 701. Second rotating shaft; 702. Active pulley; 703. Driven pulley; 704. Synchronous belt; 705. Hexagon socket bolt head; 8. Negative pressure unit; 801. Sealing shell; 802. Reciprocating screw; 803. Slide seat; 804. Piston plate; 805. First helical gear; 806. Second helical gear; 807. Inlet pipe; 808. First air distribution pipe; 809. Air blowing assembly; 8091. Air outlet pipe; 8092. Second air distribution pipe; 8093. Dust blowing pipe; 8010. Third rotating shaft. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1-Figure 3 The portable LED lighting shown in the figure includes an LED light box 1, a handle 2, a support assembly 3 and a fixing assembly 4. The handle 2 and the support assembly 3 are fixedly connected to the LED light box 1 through the fixing assembly 4. The fixing assembly 4 is installed on the rear side of the LED light box 1. The handle 2 and the support assembly 3 can be detachably connected through the fixing assembly 4, which is conducive to the user's rapid assembly of the portable lighting, so that it can be installed and positioned at any time. In addition, the support assembly 3 can stably place the lighting on the ground for use; It also includes: two protective plates 5 symmetrically distributed on the front side of the LED light box 1, one side of the protective plates 5 is slidably connected to the LED light box 1, the sum of the front surface areas of the two protective plates 5 is equal to the front surface area of the LED light box 1, and a control unit 6 for moving the two protective plates 5 is installed on the top of the LED light box 1. A linkage unit 7 is transmission-connected between the control unit 6 and the fixing component 4. Through the designed control unit 6, the two protective plates 5 and the linkage unit 7, the two protective plates 5 are moved toward each other, thereby controlling the protective plates 5 to block or open the front side of the LED light box 1. After use, the light-transmitting cover on the front side of the LED light box 1 can be closed and blocked, thereby protecting the LED lighting; A negative pressure unit 8 is installed on the LED light box 1, and one end of the negative pressure unit 8 is transmission-connected to the control unit 6, and is used to dissipate heat for the LED light box 1. When the protective plate 5 moves, the negative pressure unit 8 can be linked to work, so that the hot air flow after work inside the LED light box 1 can be extracted, thereby achieving a rapid heat dissipation effect on the LED lighting lamp, which not only improves the heat dissipation efficiency of the LED light box 1, but also extends the service life of the LED lighting lamp, ensuring the stability and reliability of the lighting equipment.

[0019] For further information, see Figure 4The control unit 6 includes a first rotating shaft 601, a support seat 602, a fixed plate 603, a driving gear 604, a first rack 605 and a second rack 606, one end of the first rotating shaft 601 is fixedly connected to the driving gear 604, and the other end is transmission-connected to the linkage unit 7, the first rack 605 and the second rack 606 are respectively engaged with the upper and lower sides of the driving gear 604, one end of the first rack 605 is fixed to one of the protective plates 5 through a connecting bar, and one end of the second rack 606 is fixed to the other protective plate 5 through a connecting bar, the support seat 602 and the fixed plate 603 are both fixed to the LED light box 1, the first rotating shaft 601 is rotationally connected to the support seat 602 and the fixed plate 603 through a bearing, and one end of the negative pressure unit 8 is transmission-connected to the first rotating shaft 601.

[0020] Specifically, before the lighting lamp is used, the two protective plates 5 are in an open state. After the lighting lamp is used, the linkage unit 7 can be used to drive the first rotating shaft 601 to rotate, and the first rotating shaft 601 drives the driving gear 604 to rotate. The driving gear 604 drives the first rack 605 and the second rack 606 to move closer to each other, thereby driving the two protective plates 5 to move closer to each other until the close sides of the two protective plates 5 are fitted together. In this way, the front side of the entire LED light box 1 will be blocked by the two protective plates 5, hiding the light-transmitting cover of the LED light box 1 to avoid being bumped by external objects.

[0021] For further information, see Figure 5 The linkage unit 7 includes a second rotating shaft 701, a driving pulley 702 and a driven pulley 703. One end of the second rotating shaft 701 is rotatably connected to the fixed plate 603. The driving pulley 702 is fixedly sleeved on the outer side of the second rotating shaft 701. The driven pulley 703 is fixedly sleeved on one end of the first rotating shaft 601. A synchronous belt 704 is transmission-connected between the driving pulley 702 and the driven pulley 703. A hexagon socket bolt head 705 is fixed on one end of the second rotating shaft 701 away from the fixed plate 603. The fixed assembly 4 is transmission-connected to the second rotating shaft 701.

[0022] Specifically, the user can use an Allen wrench to rotate the Allen bolt head 705, thereby driving the second rotating shaft 701 to rotate, and the second rotating shaft 701 drives the active pulley 702 to rotate, and the active pulley 702 drives the driven pulley 703 to rotate through the synchronous belt 704, and the driven pulley 703 drives the first rotating shaft 601 to rotate, which will then drive the control unit 6 to move, and the first rotating shaft 601 and the negative pressure component are also transmitted and connected, so when the protective plate 5 blocks, the negative pressure unit 8 also works synchronously.

[0023] For further information, see Figure 8 The support assembly 3 includes a U-shaped frame 301, an adjusting member 302 and a base 303. The top of the adjusting member 302 is fixed to the bottom center position of the U-shaped frame 301, and the bottom of the adjusting member 302 is fixedly connected to the base 303; the adjusting member 302 includes a fixing rod 3021, a hemispherical cover 3022, a locking ball 3023 and a connecting block 3024. The hemispherical cover 3022 is fixedly connected to the U-shaped frame 301 through the fixing rod 3021, the locking ball 3023 is movably connected in the hemispherical cover 3022, and the bottom of the locking ball 3023 is fixedly connected to the base 303 through the connecting block 3024.

[0024] Specifically, during assembly, the LED light box 1 is fixed to the U-shaped frame 301 using the fixing component 4, and the ball head of the locking ball 3023 is divided into a spherical or quasi-spherical structure, and the hemispherical cover 3022 has a spherical groove adapted to the locking ball 3023. The locking ball 3023 is placed in the groove of the hemispherical cover 3022. When an external force is applied, the locking ball 3023 can rotate freely in all directions around the center of the ball in the hemispherical cover 3022, thereby realizing the angle change of the U-shaped frame 301 in different directions, so that the illumination angle of the LED light box 1 can be flexibly adjusted.

[0025] Example 2: Please refer to Figure 6 This embodiment further explains the first embodiment, and the difference lies in that a negative pressure unit 8 is added to effectively dissipate heat for the LED light box 1.

[0026] Specifically, the negative pressure unit 8 includes a sealing shell 801, a reciprocating screw rod 802, a slide 803, a piston plate 804, a first helical gear 805, a second helical gear 806, an air inlet pipe 807, a first air distribution pipe 808 and an air blowing assembly 809. The bottom of the sealing shell 801 is fixed to the top of the LED light box 1 through a connecting plate, and both ends of the reciprocating screw rod 802 are rotatably connected to the sealing shell 801 through sealed bearings. The slide 803 and the surface of the reciprocating screw rod 802 are sleeved, and the piston plate 804 is fixedly sleeved on the outer ring of the slide 803. The piston plate 804 is slidably connected to the sealing shell 801. A third rotating shaft 8010 is fixed to one end of the reciprocating screw 802, the first helical gear 805 is fixedly sleeved on the outside of the first rotating shaft 601, the second helical gear 806 is fixedly sleeved on the outside of the third rotating shaft 8010, the first helical gear 805 and the second helical gear 806 are meshed and connected, one end of the air inlet pipe 807 is fixedly connected to the sealing shell 801 through a one-way valve, and the other end thereof is fixedly connected to the first air distribution pipe 808, the bottom end of the first air distribution pipe 808 is connected to the interior of the LED light box 1 through multiple pipes, and one end of the blowing assembly 809 is fixedly connected to the sealing shell 801.

[0027] Specifically, the first rotating shaft 601 drives the first helical gear 805 to rotate, the first helical gear 805 drives the second helical gear 806 to rotate, the second helical gear 806 drives the third rotating shaft 8010 to rotate, and the third rotating shaft 8010 drives the reciprocating screw 802 to rotate. During the rotation process, the reciprocating screw 802 drives the slide 803 and the piston plate 804 to perform reciprocating motion, which is conducive to cooperating with the sealing shell 801 to perform reciprocating left and right piston motion, and then through the guiding effect of the air inlet pipe 807 and the first air distribution pipe 808, the hot air flow inside the LED light box 1 is evenly extracted, thereby reducing the hot air flow inside the LED light box 1, and the LED light box 1 can be further cooled after use.

[0028] At the same time, the air blowing assembly 809 includes an air outlet pipe 8091, a second air distribution pipe 8092 and a dust blowing pipe 8093. One end of the air outlet pipe 8091 is fixedly connected to the sealing shell 801 through a one-way valve, and the other end thereof is fixedly connected to the second air distribution pipe 8092. There are multiple dust blowing pipes 8093, and multiple dust blowing pipes 8093 are fixed at the bottom of the second air distribution pipe 8092. The end of the dust blowing pipe 8093 away from the second air distribution pipe 8092 passes through the top of the LED light box 1 and extends to the upper front side of the LED light box 1.

[0029] It should be noted that: when the hot air flow extracted from the LED light box 1 passes through the air outlet pipe 8091, it will be guided into the second air distribution pipe 8092. Subsequently, these hot air flows will pass through multiple dust blowing pipes 8093 and be evenly blown toward the front surface of the LED light box 1. This process allows the dust accumulated on the surface of the light-transmitting shell of the LED light box 1 after long-term use to be effectively removed, thereby maintaining the cleanliness and light transmission performance of the light box.

[0030] Example 3: Please refer to Figure 7 This embodiment further illustrates other embodiments, and the difference lies in that the installation and disassembly steps of the LED light box 1 are optimized.

[0031] Specifically, the fixing assembly 4 includes a fourth rotating shaft 401, a threaded column 402, a T-shaped plate 403, a limiting block 404, a third helical gear 405 and a fourth helical gear 406. Two limiting seats 407 are symmetrically provided on the outer side of the fourth rotating shaft 401. The limiting seat 407 is rotatably connected to the fourth rotating shaft 401. One end of the limiting seat 407 is fixed to the rear side of the LED light box 1. The threaded column 402 is fixed to both ends of the fourth rotating shaft 401. The T-shaped plate 403 is connected to the threaded column 402 by a nut. The column 402 is threadedly connected, the limit blocks 404 are fixed on both ends of the T-shaped plate 403, the third helical gear 405 is fixedly sleeved with the second rotating shaft 701, the fourth helical gear 406 is fixedly sleeved with the fourth rotating shaft 401 and meshed with the third helical gear 405, and both sides of the LED light box 1 are provided with limit grooves 408 that are compatible with the limit blocks 404, a slide bar 409 is fixed on the rear side of the LED light box 1, and the T-shaped plate 403 is slidably sleeved with the slide bar 409.

[0032] Specifically, the third helical gear 405 is driven to rotate by the second rotating shaft 701, the third helical gear 405 drives the fourth helical gear 406 to rotate, the fourth helical gear 406 drives the fourth rotating shaft 401 to rotate, and the fourth rotating shaft 401 drives the threaded column 402 to rotate, thereby driving the two T-shaped plates 403 to move away from each other, so that the limit blocks 404 on both sides are moved out of the limit grooves 408 of the LED light box 1, thereby loosening the fixing effect of the T-shaped plate 403 and the U-shaped frame 301 and the end of the handle 2, so that the U-shaped frame 301 and the handle 2 can be disassembled synchronously, so that the LED light box 1 can be easily disassembled after use, which is conducive to the separation and storage of the lighting lamp, and can be installed and positioned at any time.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A portable LED lighting lamp comprising: An LED light box (1), a handle (2), a support assembly (3) and a fixing assembly (4), wherein the handle (2) and the support assembly (3) are fixedly connected to the LED light box (1) via the fixing assembly (4), and the fixing assembly (4) is mounted on the rear side of the LED light box (1); It is characterized by: further comprising: Two protective plates (5) are symmetrically distributed on the front side of the LED light box (1), one side of each protective plate (5) is slidably connected to the LED light box (1), the sum of the front surface areas of the two protective plates (5) is equal to the front surface area of the LED light box (1), a control unit (6) for moving the two protective plates (5) is installed on the top of the LED light box (1), and a linkage unit (7) is connected to the fixing assembly (4) in a transmission manner; A negative pressure unit (8) is installed on the LED light box (1), one end of the negative pressure unit (8) is in transmission connection with the control unit (6), and is used to dissipate heat for the LED light box (1).

2. The portable LED lighting lamp according to claim 1, characterized in that: The control unit (6) comprises a first rotating shaft (601), a support base (602), a fixing plate (603), a driving gear (604), a first rack (605) and a second rack (606), one end of the first rotating shaft (601) is fixedly connected to the driving gear (604), and the other end is transmission-connected to the linkage unit (7), the first rack (605) and the second rack (606) are respectively engaged on the upper and lower sides of the driving gear (604), one end of the first rack (605) is fixed to one of the protective plates (5) through a connecting bar, and one end of the second rack (606) is fixed to the other protective plate (5) through a connecting bar, the support base (602) and the fixing plate (603) are both fixed to the LED light box (1), the first rotating shaft (601) is rotationally connected to the support base (602) and the fixing plate (603) through a bearing, and one end of the negative pressure unit (8) is transmission-connected to the first rotating shaft (601).

3. The portable LED lighting lamp according to claim 2, characterized in that: The linkage unit (7) comprises a second rotating shaft (701), a driving pulley (702) and a driven pulley (703); one end of the second rotating shaft (701) is rotatably connected to the fixed plate (603); the driving pulley (702) is fixedly sleeved on the outer side of the second rotating shaft (701); the driven pulley (703) is fixedly sleeved on one end of the first rotating shaft (601); a synchronous belt (704) is transmission-connected between the driving pulley (702) and the driven pulley (703); a hexagon socket bolt head (705) is fixed to one end of the second rotating shaft (701) away from the fixed plate (603); and the fixed assembly (4) and the second rotating shaft (701) are transmission-connected.

4. The portable LED lighting lamp according to claim 2, characterized in that: The negative pressure unit (8) comprises a sealing shell (801), a reciprocating screw (802), a slide (803), a piston plate (804), a first helical gear (805), a second helical gear (806), an air inlet pipe (807), a first air distribution pipe (808) and an air blowing assembly (809). The bottom of the sealing shell (801) is fixed to the top of the LED light box (1) via a connecting plate. Both ends of the reciprocating screw (802) are rotatably connected to the sealing shell (801) via sealed bearings. The slide (803) and the surface of the reciprocating screw (802) are sleeved. The piston plate (804) is fixedly sleeved on the outer ring of the slide (803). The piston plate (804) is slidably connected to the sealing shell (801). A third rotating shaft (8010) is fixed to one end of the reciprocating screw (802), the first helical gear (805) is fixedly sleeved on the outer side of the first rotating shaft (601), the second helical gear (806) is fixedly sleeved on the outer side of the third rotating shaft (8010), the first helical gear (805) and the second helical gear (806) are meshed and connected, one end of the air inlet pipe (807) is fixedly connected to the sealing shell (801) through a one-way valve, and the other end thereof is fixedly connected to the first air distribution pipe (808), the bottom end of the first air distribution pipe (808) is connected to the interior of the LED light box (1) through multiple pipes, and one end of the blowing component (809) is fixedly connected to the sealing shell (801).

5. The portable LED lighting lamp according to claim 4, characterized in that: The air blowing assembly (809) comprises an air outlet pipe (8091), a second air distribution pipe (8092) and a dust blowing pipe (8093); one end of the air outlet pipe (8091) is fixedly connected to the sealing shell (801) via a one-way valve, and the other end thereof is fixedly connected to the second air distribution pipe (8092); a plurality of dust blowing pipes (8093) are provided, and the plurality of dust blowing pipes (8093) are fixed to the bottom of the second air distribution pipe (8092); an end of the dust blowing pipe (8093) away from the second air distribution pipe (8092) passes through the top of the LED light box (1) and extends to a position above the front side of the LED light box (1).

6. The portable LED lighting lamp according to claim 3, characterized in that: The fixing assembly (4) comprises a fourth rotating shaft (401), a threaded column (402), a T-shaped plate (403), a limiting block (404), a third helical gear (405) and a fourth helical gear (406). Two limiting seats (407) are symmetrically provided on the outer side of the fourth rotating shaft (401). The limiting seats (407) are rotatably connected to the fourth rotating shaft (401). One end of the limiting seat (407) is fixed to the rear side of the LED light box (1). The threaded column (402) is fixed to both ends of the fourth rotating shaft (401). The T-shaped plate (403) is connected to the threaded column (402) through a nut. The column (402) is threadedly connected, the limit blocks (404) are fixed to both ends of the T-shaped plate (403), the third helical gear (405) is fixedly sleeved with the second rotating shaft (701), the fourth helical gear (406) is fixedly sleeved with the fourth rotating shaft (401) and meshed with the third helical gear (405), both sides of the LED light box (1) are provided with limit grooves (408) adapted to the limit blocks (404), a slide bar (409) is fixed to the rear side of the LED light box (1), and the T-shaped plate (403) is slidably sleeved with the slide bar (409).

7. The portable LED lighting lamp according to claim 1, characterized in that: The support assembly (3) comprises a U-shaped frame (301), an adjusting member (302) and a base (303), wherein the top of the adjusting member (302) is fixed to the center position of the bottom of the U-shaped frame (301), and the bottom of the adjusting member (302) is fixedly connected to the base (303).

8. The portable LED lighting lamp according to claim 7, characterized in that: The adjusting member (302) comprises a fixing rod (3021), a hemispherical cover (3022), a locking ball (3023) and a connecting block (3024); the hemispherical cover (3022) is fixedly connected to the U-shaped frame (301) via the fixing rod (3021); the locking ball (3023) is movably connected within the hemispherical cover (3022); and the bottom of the locking ball (3023) is fixedly connected to the base (303) via the connecting block (3024).

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